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EP4095083A1 - Device for aligning a raised load - Google Patents

Device for aligning a raised load Download PDF

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Publication number
EP4095083A1
EP4095083A1 EP22174419.6A EP22174419A EP4095083A1 EP 4095083 A1 EP4095083 A1 EP 4095083A1 EP 22174419 A EP22174419 A EP 22174419A EP 4095083 A1 EP4095083 A1 EP 4095083A1
Authority
EP
European Patent Office
Prior art keywords
load
chain
tension
wheel
adjustment device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22174419.6A
Other languages
German (de)
French (fr)
Other versions
EP4095083B1 (en
Inventor
Katharina Maria Uebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heinrich de Fries GmbH
Original Assignee
Heinrich de Fries GmbH
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Publication date
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Publication of EP4095083A1 publication Critical patent/EP4095083A1/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • B66D3/14—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable lever operated

Definitions

  • the invention relates to an arrangement for aligning a raised load according to the preamble of patent claim 1.
  • the assembly of heavy and large components in particular can often only be carried out using special systems on which the components are suspended. There is often a need to additionally align the component that has already been lifted.
  • An example here are bridge sections, which still have to be inserted into a partially erected bridge structure, i.e. have to be inserted and which first of all have to be aligned exactly in general or in all directions. This is accomplished using an assembly of a rigid beam and attached thereto tensile cords extending down from the beam. The lower ends of the tension cords are releasably attached to different load application points of the load to be lifted, e.g. B. at the four corners of a component that is rectangular in plan.
  • the individual tension cords are mainly made up of cables or chains of correspondingly strong dimensions or of a combination of some cables and some chains. If chains are used, various European safety regulations require specially designed and standardized chains for such purposes, e.g. B. so-called chain slings.
  • chain slings For aligning the load, at least some of the tension cords include additional length adjustment devices that extend between an upper connection point and a lower connection point of the tension cord in question. Length-adjustable threaded rods are often used as length adjustment devices, since these are inexpensive and can be easily integrated into the respective tension cord. However, their operation can be difficult and, especially in sensitive alignment situations, also relatively time-consuming.
  • the aim of the invention is an improved technical solution for situations in which loads, especially heavy and large loads, have to be aligned quickly and at the same time sensitively while they are in the raised state.
  • the arrangement comprises a rigidly constructed carrier and at least two tension cords attached to and extending from the carrier.
  • the lower ends of the tension cords are designed for attachment to different load application points on the load.
  • a component of at least one of the pull cords is a length adjustment device extending between an upper connection point and a lower connection point.
  • the length adjustment device has a housing articulated at the upper connection point and a drive shaft rotatably mounted in the housing, along which a drive wheel, a load pressure brake, a load wheel and a gearbox which couples the drive shaft to the load wheel are arranged.
  • the load wheel is provided over its circumference with chain link chambers for the individual chain links of a round link chain guided around the load wheel, this round link chain being of the special construction type of a sling chain.
  • the chain sling is fastened with one of its ends to the lower connection point of the tension cord.
  • the sling chain routed over the load wheel should have a minimum length between the load wheel and the attachment of its lower chain end to the lower connection point. This minimum length depends on the load situation and the material thickness of the chain sling and should be B. be between 1.5 m and 3 m.
  • At least one longitudinal section of the respective tension cord is also formed by a chain of the construction type of a chain sling on each of the further tension cords.
  • the minimum length that these standardized sling chains must have is often specified by the safety regulations to be observed.
  • the number of pull cords can vary depending on the load situation and in particular the geometries and dimensions of the load to be lifted. Depending on the load situation, the number of tension cords is usually between two and four. At especially heavy loads, however, it may also be necessary to B. to hang on six individual pull cords. In all of these cases, the safety regulations to be observed can stipulate that at least one longitudinal section of each of the pull cords is formed by a chain of the construction type of a chain sling, and that a certain minimum length of the chain sling is also observed.
  • a first possible embodiment uses a total of two pull cords attached to the carrier and extending down from it, the lower ends of which can be attached to load application points facing away from one another on the load, in which case it is sufficient for the exact alignment of the load if only one
  • the two pull cords are provided with the length adjustment device.
  • Another embodiment uses a total of three pull cords fastened to the carrier and extending down from it, with the lower end of the first pull cord on the one hand and the lower ends of the second and third pull cords on the other hand being attachable to the load at opposite load application points. In this case, it is sufficient if only one or only two of the three pull cords is/are provided with the length adjustment device.
  • a further embodiment uses a total of four tension cords attached to the carrier and extending downwards from it, with the lower ends of the first and second tension cord on the one hand and the lower ends of the third and fourth tension cord on the other hand being able to be attached to the load at opposite load application points. In this case it is sufficient if only either the first or the second tension cord and at the same time either the third or the fourth tension cord are provided with the length adjustment device.
  • the length adjustment device can be driven to lengthen or shorten its effective length, either manually or by motor using e.g. B. an electric motor.
  • motor e.g. B. an electric motor.
  • one embodiment proposes a simple round-link chain guided over the drive wheel for manual operation of the drive wheel.
  • a hoist in the form of a spur gear pulley block (spur gear hoist) or a lever hoist with an integrated ratchet function (ratchet hoist) is used or deployed as a sling.
  • the tension-loaded chain is of particular importance. This is not the one in spur gear hoists usual, simple tension link chain, but it is of the construction type of the so-called chain sling.
  • Chain slings are standardized components that are specified, for example, in the German industrial standards DIN EN 818-1 to DIN EN 818-6.
  • the already lifted load F e.g. B. a segment of a bridge construction to be inserted.
  • Their lower ends are detachably attached to load application points of the load F, e.g. B. here at three corner points or at the four corner points of a load that is rectangular in plan.
  • the individual pull cords 11, 12, 13 are mainly composed of ropes or chains of correspondingly strong dimensions or of a combination of partly ropes and partly chains.
  • the load F is lifted by applying the lifting force F H , for example with the aid of a lifting device, via the pull cords, in the exemplary embodiment three pull cords 11, 12, 13, which extend obliquely downwards from the central support element 10. Their lower ends are designed to each different load application points 11A, 12A, 13A to be attached to the load F, z. B. by hanging by means of detachable hooks. The upper ends of all tension cords 11, 12, 13 are suspended in openings in the rigid support element 10, which in turn can be lifted from above by the lifting means.
  • all tension cords 11, 12, 13 should have approximately the same length.
  • the lifted load F is very sensitive with regard to its exact alignment, eg with regard to its exact leveling to the horizontal.
  • part of at least one of the pull cords 11, 12, 13 is a length adjustment device 30, which extends between an upper connection point 21, which is part of the pull cord in question, and a lower connection point 22, which is also part of this pull cord.
  • the length adjustment device 30 is formed by a hoist in the configuration either as a spur gear pulley block or as a lever hoist (ratchet hoist).
  • a spur gear block and tackle is in its basic design, for example, in EP 0 018 127 B1 , And such a lever hoist with integrated ratchet function (ratchet) is in its basic design z. B. in the DE 33 23 110 A1 described in more detail.
  • a chain 25.1 made of oval chain links is passed through the spur gear pulley or alternatively the lever hoist (ratchet hoist) in such a way that the length of the chain section of the chain leading out of a housing 31 of the length adjustment device 30, and thus the overall length, changes when the hoist is actuated the length adjustment device 30 can be sensitively changed.
  • the chain used in the length adjustment device 30 is of decisive importance for safety and above all for work-related safety.
  • This is not the simple tension link chain that is usual in spur wheel hoists and lever hoists, but it is of the construction type of the sling chain 25.1.
  • Sling chains 25.1 are standardized components and are specified in the German industrial standards DIN EN 818-1 to DIN EN 818-6.
  • a hoist in the form of a spur gear pulley block (spur gear hoist) or a lever hoist with an integrated ratchet function (ratchet hoist) is used as a sling as the length adjustment device 30 .
  • a heavy duty hook 28 is attached to the top of the housing 31 of the length adjuster 30 .
  • the hook 28 can be rotatably mounted relative to the housing 31 . With the hook 28, the housing 31 is rigidly hung in the upper connection point 21 of the tension cord 11 in the longitudinal direction of the cord.
  • the housing 31 accommodates a drive wheel 32 , a load pressure brake 33 , a load wheel 34 and a gear 35 in an axial arrangement one behind the other and transversely to the longitudinal extension of the tension cord 11 .
  • the drive wheel 32 is provided at one end of a drive shaft 37 extending transversely to the traction cord 11 .
  • the drive shaft 37 is arranged centrally and passes through the load pressure brake 33 and the load wheel 34.
  • the drive wheel 32 is connected via the drive shaft 37 to the other end of the drive shaft 37 on the load wheel 34 abortive gear 35 can be coupled.
  • the gear 35 is z. B. formed as a planetary gear.
  • the load wheel 34 is evenly distributed over its circumference with chain link chambers 34A for positively receiving the individual chain links of the chain sling 25.1.
  • the sling chain 25.1 wraps around the load wheel 34 over a wrap angle of approximately 180°.
  • the shape of the chain link chambers 34A is matched to the special geometry of the oval chain links of the chain sling 25.1.
  • the sling chain 25.1 is provided with a ring at its load-side end, which forms the lower connection point 22.
  • This forged ring also meets the specification of a sling and is specified in more detail, for example, in the German industrial standards DIN EN 1677-1 to DIN EN 1677-6
  • the load-free other end of the chain sling 25.1 can either hang down freely from the housing 31 or be caught in a chain box.
  • the load pressure brake 33 can be designed to work by means of frictional locking or by means of a positive locking, or by a combination of frictional locking and positive locking.
  • the load pressure brake 33 is preferably composed of a ratchet disk 39, friction disks arranged on both sides of the ratchet disk 39, and pawls.
  • the pawls are pivotally mounted on the housing 31 and rest against ratchet teeth of the ratchet disc 39 under spring pressure.
  • the two friction disks come into a frictional connection with the ratchet disk 39 and with a pressure disk fixed to the drive shaft 37 or with the drive wheel 32 .
  • the task of the load pressure brake 33 is to hold or block the train acting on the spur gear pulley block or alternatively on a lever hoist (ratchet hoist) when the drive wheel 32 is stationary.
  • the drive wheel 32 is pressed against the thrust washer via the friction discs and the ratchet disc 39, and the pawls are locked in the recesses on the circumference of the ratchet disc 39.
  • the drive shaft 37 is provided with a thread 41 at the end carrying the drive wheel 32 in the form of a chain wheel for a link chain 45, into which a counter-thread on the drive wheel 32 engages.
  • a helical compression spring 65 acts on the drive wheel 32 in the direction of the load pressure brake 33.
  • a plate of the housing 31, together with a further plate arranged at a parallel distance, serves to rotatably support the as a chain wheel for the sling chain 25.1 trained load wheel 34.
  • the drive shaft 37 engages with a toothed end portion in a gear 72 of the gear 35.
  • the gear 72 meshes with pinions as part of two gears of the gear.
  • the drive wheel 32 is rotated clockwise by pulling on the link chain 45 leading over the drive wheel 32. Since the drive wheel 32 can initially rotate freely relative to the drive shaft 37, the drive wheel 32 rotates relative to the drive shaft 37 at first, but this then ends, so that from then on the drive shaft 37 rotates clockwise. There is thus a direct torque transmission from the drive wheel 32 via the drive shaft 37 and the gear 35 to the load wheel 34.
  • the brake disc of the load pressure brake 33 lifts off the friction disc when the drive wheel 32 rotates clockwise.
  • the effective length of the length adjustment device 30 is thus shortened without a braking effect.
  • the load on the load wheel 34 causes it to rotate counterclockwise, causing the drive shaft 37 to rotate. Because of this, the brake disc is pulled against the friction disc. The effective length achieved by the length adjustment device 30 is thus fixed.
  • the drive wheel 32 is rotated counterclockwise by pulling the link chain 45 in the opposite direction. Driving occurs only after a predetermined angle of idle rotation, so that the brake disc is displaced in the axial direction of the drive shaft 37 and is lifted off the friction disc.
  • the tension in the sling chain 25.1 acting on the load wheel 34 causes the drive shaft 37 to rotate relative to the drive wheel 32, as a result of which the brake disc is pulled against the friction disc.
  • the effective length of the length adjustment device 30 is increased, and by pulling in the other direction, the effective length of the length adjustment device 30 is shortened, in order to change the overall length of the traction cord 11 in question, and thus the Altitude of the load F.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Die Anordnung zum Ausrichten einer angehobenen Last (F), umfasst ein starr ausgebildetes Tragelement (10) und mindestens zwei an dem Tragelement (10) befestigte und von diesem herab sich erstreckende Zugstränge (11, 12, 13), deren untere Enden zur Befestigung an jeweils unterschiedlichen Lastangriffspunkten (11A, 12A, 13A) an der Last (F) ausgebildet sind. Bestandteil mindestens eines Zugstrangs (11) ist eine sich zwischen einem oberen Verbindungspunkt (21) und einem unteren Verbindungspunkt (22) erstreckende Längeneinstellvorrichtung (30). Die Längeneinstellvorrichtung (30) weist ein an dem oberen Verbindungspunkt (21) gelenkig befestigtes Gehäuse (31) und eine in dem Gehäuse (31) drehbar gelagerte Antriebswelle (37) auf, entlang der ein Antriebsrad, eine Lastdruckbremse, ein Lastrad und ein Getriebe, welches die Antriebswelle mit dem Lastrad koppelt, angeordnet sind. Das Lastrad ist über seinen Umfang mit Kettengliedkammern für die einzelnen Kettenglieder einer um das Lastrad geführten Anschlagkette (25.1) versehen. Die Anschlagkette (25.1) ist mit einem ihrer Enden an dem unteren Verbindungspunkt (22) befestigt.

Figure imgaf001
The arrangement for aligning a raised load (F) comprises a rigid support element (10) and at least two tension cords (11, 12, 13) attached to the support element (10) and extending down from it, the lower ends of which are attached to each different load application points (11A, 12A, 13A) are formed on the load (F). A component of at least one tension cord (11) is a length adjustment device (30) extending between an upper connection point (21) and a lower connection point (22). The length adjustment device (30) has a housing (31) articulated at the upper connection point (21) and a drive shaft (37) rotatably mounted in the housing (31) along which a drive wheel, a load pressure brake, a load wheel and a gear, which couples the drive shaft to the load wheel, are arranged. The load wheel is provided around its circumference with chain link chambers for the individual chain links of a sling chain (25.1) guided around the load wheel. The chain sling (25.1) is attached with one of its ends to the lower connection point (22).
Figure imgaf001

Description

Die Erfindung betrifft eine Anordnung zum Ausrichten einer angehobenen Last nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an arrangement for aligning a raised load according to the preamble of patent claim 1.

Die Montage vor allem schwerer und groß dimensionierter Bauteile kann oft nur unter Einsatz spezieller Anlagen erfolgen, an denen die Bauteile aufgehängt sind. Dabei besteht oft die Notwendigkeit, das bereits angehobene Bauteil zusätzlich auszurichten. Ein Beispiel sind hier Brückenabschnitte, welche in ein teilweise errichtetes Brückenbauwerk noch eingesetzt, d.h. eingefügt werden müssen und welche hierzu zunächst exakt allgemein oder in alle Richtungen auszurichten sind. Dies erfolgt unter Einsatz einer Anordnung aus einem starren Träger und daran befestigten, von dem Träger herab sich erstreckenden Zugsträngen. Die unteren Enden der Zugstränge sind lösbar an jeweils unterschiedlichen Lastangriffspunkten der anzuhebenden Last befestigt, z. B. an den vier Eckpunkten eines im Grundriss rechteckigen Bauteils.The assembly of heavy and large components in particular can often only be carried out using special systems on which the components are suspended. There is often a need to additionally align the component that has already been lifted. An example here are bridge sections, which still have to be inserted into a partially erected bridge structure, i.e. have to be inserted and which first of all have to be aligned exactly in general or in all directions. This is accomplished using an assembly of a rigid beam and attached thereto tensile cords extending down from the beam. The lower ends of the tension cords are releasably attached to different load application points of the load to be lifted, e.g. B. at the four corners of a component that is rectangular in plan.

Die einzelnen Zugstränge setzen sich überwiegend aus entsprechend stark dimensionierten Seilen oder Ketten oder aus einer Kombination von teils Seilen und teils Ketten zusammen. Werden Ketten verwendet, so verlangen verschiedene europäische Sicherheitsvorschriften für derartige Einsatzzwecke speziell gestaltete und normierte Ketten, z. B. sogenannte Anschlagketten. Für das Ausrichten der Last sind Bestandteil zumindest einzelner der Zugstränge zusätzliche Längeneinstellvorrichtungen, die sich zwischen einem oberen Verbindungspunkt und einem unteren Verbindungspunkt des betreffenden Zugstrangs erstrecken. Als Längeneinstellvorrichtungen dienen häufig längenverstellbare Gewindestangen, da diese preiswert sind und sich einfach in den jeweiligen Zugstrang integrieren lassen. Ihre Bedienung kann allerdings schwierig sein und, vor allem in sensiblen Ausrichtsituationen, auch relativ zeitaufwändig.The individual tension cords are mainly made up of cables or chains of correspondingly strong dimensions or of a combination of some cables and some chains. If chains are used, various European safety regulations require specially designed and standardized chains for such purposes, e.g. B. so-called chain slings. For aligning the load, at least some of the tension cords include additional length adjustment devices that extend between an upper connection point and a lower connection point of the tension cord in question. Length-adjustable threaded rods are often used as length adjustment devices, since these are inexpensive and can be easily integrated into the respective tension cord. However, their operation can be difficult and, especially in sensitive alignment situations, also relatively time-consuming.

Mit der Erfindung angestrebt wird eine verbesserte technische Lösung für Situationen, in denen Lasten vor allem schwere und groß dimensionierte Lasten, während ihres angehobenen Zustandes schnell und zugleich sensibel ausgerichtet werden müssen.The aim of the invention is an improved technical solution for situations in which loads, especially heavy and large loads, have to be aligned quickly and at the same time sensitively while they are in the raised state.

Zur Lösung der Aufgabe wird eine Anordnung zum Ausrichten einer angehobenen Last mit den Merkmalen des Patentanspruchs 1 vorgeschlagen.To solve the problem, an arrangement for aligning a raised load with the features of patent claim 1 is proposed.

Die Anordnung umfasst einen starr ausgebildeten Träger und mindestens zwei an dem Träger befestigte und von diesem herab sich erstreckende Zugstränge. Die unteren Enden der Zugstränge sind zur Befestigung an jeweils unterschiedlichen Lastangriffspunkten an der Last ausgebildet. Bestandteil mindestens eines der Zugstränge ist eine sich zwischen einem oberen Verbindungspunkt und einem unteren Verbindungspunkt erstreckende Längeneinstellvorrichtung. Die Längeneinstellvorrichtung weist ein an dem oberen Verbindungspunkt gelenkig befestigtes Gehäuse und eine in dem Gehäuse drehbar gelagerte Antriebswelle auf, entlang der ein Antriebsrad, eine Lastdruckbremse, ein Lastrad und ein Getriebe, welches die Antriebswelle mit dem Lastrad koppelt, angeordnet sind. Das Lastrad ist über seinen Umfang mit Kettengliedkammern für die einzelnen Kettenglieder einer um das Lastrad geführten Rundgliederkette versehen, wobei diese Rundgliederkette vom speziellen Bautyp einer Anschlagkette ist. Die Anschlagkette ist mit einem ihrer Enden zugfest an dem unteren Verbindungspunkt des Zugstrangs befestigt.The arrangement comprises a rigidly constructed carrier and at least two tension cords attached to and extending from the carrier. The lower ends of the tension cords are designed for attachment to different load application points on the load. A component of at least one of the pull cords is a length adjustment device extending between an upper connection point and a lower connection point. The length adjustment device has a housing articulated at the upper connection point and a drive shaft rotatably mounted in the housing, along which a drive wheel, a load pressure brake, a load wheel and a gearbox which couples the drive shaft to the load wheel are arranged. The load wheel is provided over its circumference with chain link chambers for the individual chain links of a round link chain guided around the load wheel, this round link chain being of the special construction type of a sling chain. The chain sling is fastened with one of its ends to the lower connection point of the tension cord.

Aus Sicherheitsgründen sollte die über das Lastrad geführte Anschlagkette eine Mindestlänge zwischen dem Lastrad und der Befestigung ihres unteren Kettenendes an dem unteren Verbindungspunkt aufweisen. Diese Mindestlänge ist abhängig von der Lastsituation und der Materialstärke der Anschlagkette und sollte z. B. zwischen 1,5 m und 3 m betragen.For safety reasons, the sling chain routed over the load wheel should have a minimum length between the load wheel and the attachment of its lower chain end to the lower connection point. This minimum length depends on the load situation and the material thickness of the chain sling and should be B. be between 1.5 m and 3 m.

Geschaffen wird damit eine technische Lösung für Situationen, in denen Lasten und vor allem schwere und groß dimensionierte Lasten während ihres angehobenen Zustandes sicher, schnell und zugleich sensibel ausgerichtet werden müssen. Von Bedeutung ist dies in Situationen, in denen es z. B. um eine exakte allgemeine oder in alle Richtungen Ausrichtung der Last vor deren millimetergenauem Einpassen in eine bereits vorhandene Baukonstruktion geht.This creates a technical solution for situations in which loads, and above all heavy and large loads, have to be aligned safely, quickly and sensitively while they are being lifted. This is important in situations where it is z. B. is an exact general or in all directions alignment of the load before its millimeter-precise fitting into an existing building structure.

Gemäß einer Ausgestaltung der Anordnung wird auch an jedem der weiteren Zugstränge zumindest ein Längsabschnitt des betreffenden Zugstrangs durch eine Kette vom Bautyp einer Anschlagkette gebildet. Die Mindestlänge, die diese normierten Anschlagketten aufweisen müssen, ist häufig durch die zu beachtenden Sicherheitsbestimmungen vorgegeben.According to one embodiment of the arrangement, at least one longitudinal section of the respective tension cord is also formed by a chain of the construction type of a chain sling on each of the further tension cords. The minimum length that these standardized sling chains must have is often specified by the safety regulations to be observed.

Die Anzahl der Zugstränge kann je nach der Lastsituation und insbesondere der Geometrien und Abmessungen der anzuhebenden Last unterschiedlich sein. Je nach Lastsituation wird die Anzahl der Zugstränge im Regelfall zwischen zwei und vier betragen. Bei besonders schweren Lasten kann es jedoch auch notwendig werden, diese z. B. an sechs einzelnen Zugsträngen aufzuhängen. In allen diesen Fällen kann durch die zu beachtenden Sicherheitsvorschriften vorgegeben sein, dass an jedem der Zugstränge zumindest ein Längsabschnitt durch eine Kette von dem Bautyp einer Anschlagkette gebildet wird, und dass ferner eine bestimmte Mindestlänge der Anschlagkette beachtet wird.The number of pull cords can vary depending on the load situation and in particular the geometries and dimensions of the load to be lifted. Depending on the load situation, the number of tension cords is usually between two and four. At especially heavy loads, however, it may also be necessary to B. to hang on six individual pull cords. In all of these cases, the safety regulations to be observed can stipulate that at least one longitudinal section of each of the pull cords is formed by a chain of the construction type of a chain sling, and that a certain minimum length of the chain sling is also observed.

So verwendet eine erste mögliche Ausführungsform insgesamt zwei an dem Träger befestigte und von diesem herab sich erstreckende Zugstränge, deren untere Enden an einander abgewandten Lastangriffspunkten an der Last befestigbar sind, wobei es in diesem Fall zum exakten Ausrichten der Last bereits ausreichend ist, wenn nur einer der zwei Zugstränge mit der Längeneinstellvorrichtung versehen ist.A first possible embodiment uses a total of two pull cords attached to the carrier and extending down from it, the lower ends of which can be attached to load application points facing away from one another on the load, in which case it is sufficient for the exact alignment of the load if only one The two pull cords are provided with the length adjustment device.

Eine andere Ausführungsform verwendet insgesamt drei an dem Träger befestigte und von diesem herab sich erstreckende Zugstränge, wobei das untere Ende des ersten Zugstrangs einerseits, und die unteren Enden des zweiten und dritten Zugstrangs andererseits an einander abgewandten Lastangriffspunkten an der Last befestigbar sind. In diesem Fall ist es ausreichend, wenn nur einer oder nur zwei der drei Zugstränge mit der Längeneinstellvorrichtung versehen ist/sind.Another embodiment uses a total of three pull cords fastened to the carrier and extending down from it, with the lower end of the first pull cord on the one hand and the lower ends of the second and third pull cords on the other hand being attachable to the load at opposite load application points. In this case, it is sufficient if only one or only two of the three pull cords is/are provided with the length adjustment device.

Eine weitere Ausführungsform verwendet insgesamt vier an dem Träger befestigte und von diesem herab sich erstreckende Zugstränge, wobei die unteren Enden des ersten und zweiten Zugstrangs einerseits, und die unteren Enden des dritten und vierten Zugstrangs andererseits an einander abgewandten Lastangriffspunkten an der Last befestigbar sind. In diesem Fall ist es ausreichend, wenn nur entweder der erste oder der zweite Zugstrang und zugleich entweder der dritte oder der vierte Zugstrang mit der Längeneinstellvorrichtung versehen sind.A further embodiment uses a total of four tension cords attached to the carrier and extending downwards from it, with the lower ends of the first and second tension cord on the one hand and the lower ends of the third and fourth tension cord on the other hand being able to be attached to the load at opposite load application points. In this case it is sufficient if only either the first or the second tension cord and at the same time either the third or the fourth tension cord are provided with the length adjustment device.

Der Antrieb der Längeneinstellvorrichtung, um deren wirksame Länge zu verlängern oder zu verkürzen, kann entweder manuell erfolgen oder motorisch mittels z. B. eines Elektromotors. Hinsichtlich des hier bevorzugten manuellen Antriebs wird mit einer Ausgestaltung eine über das Antriebsrad geführte, einfache Rundgliederkette zum manuellen Bedienen des Antriebsrads vorgeschlagen.The length adjustment device can be driven to lengthen or shorten its effective length, either manually or by motor using e.g. B. an electric motor. With regard to the manual drive that is preferred here, one embodiment proposes a simple round-link chain guided over the drive wheel for manual operation of the drive wheel.

Der entscheidende Aspekt der hier beschriebenen Anordnung besteht darin, dass ein Hebezeug in der Ausgestaltung als ein Stirnrad-Flaschenzug (Stirnradzug) oder ein Hebelzug mit integrierter Ratschenfunktion (Ratschzug) als Anschlagmittel verwendet bzw. eingesetzt wird. Von besonderer Bedeutung ist dabei die zugbelastete Kette. Diese ist nicht die in Stirnrad-Kettenzügen übliche, einfache Zuggliederkette, sondern sie ist von dem Bautyp der sogenannten Anschlagkette. Anschlagketten sind normierte Bauteile, die zum Beispiel in den deutschen Industrienormen DIN EN 818-1 bis DIN EN 818-6 spezifiziert sind.The decisive aspect of the arrangement described here is that a hoist in the form of a spur gear pulley block (spur gear hoist) or a lever hoist with an integrated ratchet function (ratchet hoist) is used or deployed as a sling. The tension-loaded chain is of particular importance. This is not the one in spur gear hoists usual, simple tension link chain, but it is of the construction type of the so-called chain sling. Chain slings are standardized components that are specified, for example, in the German industrial standards DIN EN 818-1 to DIN EN 818-6.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Erläuterung verschiedener Ausführungsbeispiele anhand der Zeichnungen. Darin zeigen:

Fig. 1
in einer perspektivischen Ansicht eine aus mehreren und hier drei Zugsträngen bestehende Anordnung zum Ausrichten einer angehobenen Last;
Fig. 2
in einem Schnitt eine in einem der Zugstränge der Anordnung verwendete Längeneinstellvorrichtung.
Further advantages and details result from the following explanation of various exemplary embodiments with reference to the drawings. Show in it:
1
in a perspective view, an arrangement consisting of several pull cords, here three, for aligning a raised load;
2
in section a length adjuster used in one of the pull cords of the assembly.

Bei der Montage großer Bauteile, welche sich oft nur mit Hilfe spezieller Anlagen anheben lassen, ist es oft notwendig, die bereits angehobene Last F, z. B. ein einzufügendes Segment einer Brückenkonstruktion, zusätzlich auszurichten. Dies erfolgt unter Einsatz der hier beschriebenen Anordnung aus einem starren Tragelement 10 und daran befestigten, von dem Tragelement 10 herab sich erstreckender Zugstränge 11, 12, 13. Deren untere Enden sind lösbar an Lastangriffspunkten der Last F befestigt, z. B. hier an drei Eckpunkten oder an den vier Eckpunkten einer im Grundriss rechteckigen Last. Die einzelnen Zugstränge 11, 12, 13 setzen sich überwiegend aus entsprechend stark dimensionierten Seilen oder Ketten oder aus einer Kombination von teils Seilen und teils Ketten zusammen.When assembling large components, which can often only be lifted with the help of special systems, it is often necessary to load the already lifted load F, e.g. B. a segment of a bridge construction to be inserted. This is done using the arrangement described here, consisting of a rigid support element 10 and tension cords 11, 12, 13 attached thereto and extending down from the support element 10. Their lower ends are detachably attached to load application points of the load F, e.g. B. here at three corner points or at the four corner points of a load that is rectangular in plan. The individual pull cords 11, 12, 13 are mainly composed of ropes or chains of correspondingly strong dimensions or of a combination of partly ropes and partly chains.

Das Anheben der Last F unter Aufwenden der Hebekraft FH erfolgt zum Beispiel mit Hilfe eines Hubmittels, über die sich von dem zentralen Tragelement 10 schräg nach unten erstreckenden Zugstränge, beim Ausführungsbeispiel drei Zugstränge 11, 12, 13. Deren untere Enden sind ausgebildet, an jeweils unterschiedlichen Lastangriffspunkten 11A, 12A, 13A an der Last F befestigt zu werden, z. B. durch Einhängen mittels lösbarer Haken. Die oberen Enden aller Zugstränge 11, 12, 13 sind in Öffnungen in dem starr ausgebildeten Tragelement 10 eingehängt, das seinerseits von oben her durch das Hubmittel anhebbar ist.The load F is lifted by applying the lifting force F H , for example with the aid of a lifting device, via the pull cords, in the exemplary embodiment three pull cords 11, 12, 13, which extend obliquely downwards from the central support element 10. Their lower ends are designed to each different load application points 11A, 12A, 13A to be attached to the load F, z. B. by hanging by means of detachable hooks. The upper ends of all tension cords 11, 12, 13 are suspended in openings in the rigid support element 10, which in turn can be lifted from above by the lifting means.

Im Fall der hier bevorzugten, zentralen Anordnung des gemeinsamen Tragelements 10 sollten alle Zugstränge 11, 12, 13 in etwa dieselbe Länge aufweisen.In the case of the central arrangement of the common support element 10, which is preferred here, all tension cords 11, 12, 13 should have approximately the same length.

Die angehobene Last F ist sehr sensibel hinsichtlich ihrer exakten Ausrichtung, z.B. hinsichtlich ihrer exakten Nivellierung zur Horizontalen. Zur Ausrichtung ist es erforderlich, die wirksame Länge einzelner Zugstränge exakt einzustellen, um so zu der gewünschten Nivellierung der Last F zu gelangen. Zu diesem Zweck ist Bestandteil mindestens eines der Zugstränge 11, 12, 13 eine Längeneinstellvorrichtung, 30, welche sich zwischen einem oberen Verbindungspunkt 21, welcher Bestandteil des betreffenden Zugstrangs ist, und einem unteren Verbindungspunkt 22, welcher ebenfalls Bestandteil dieses Zugstrangs ist, erstreckt.The lifted load F is very sensitive with regard to its exact alignment, eg with regard to its exact leveling to the horizontal. For alignment, it is necessary to precisely set the effective length of individual pull cords in order to achieve the desired leveling to reach the load F. For this purpose, part of at least one of the pull cords 11, 12, 13 is a length adjustment device 30, which extends between an upper connection point 21, which is part of the pull cord in question, and a lower connection point 22, which is also part of this pull cord.

Die Längeneinstellvorrichtung 30 wird durch ein Hebezeug in der Ausgestaltung entweder als Stirnrad-Flaschenzug oder als Hebelzug (Ratschzug) gebildet. Ein solcher Stirnnrad-Flaschenzug ist in seiner Grundbauart zum Beispiel in der EP 0 018 127 B1 , und ein solcher Hebelzug mit integrierter Ratschenfunktion (Ratschzug) ist in seiner Grundbauart z. B. in der DE 33 23 110 A1 näher beschrieben.The length adjustment device 30 is formed by a hoist in the configuration either as a spur gear pulley block or as a lever hoist (ratchet hoist). Such a spur gear block and tackle is in its basic design, for example, in EP 0 018 127 B1 , And such a lever hoist with integrated ratchet function (ratchet) is in its basic design z. B. in the DE 33 23 110 A1 described in more detail.

Durch den Stirnrad-Flaschenzug bzw. alternativ den Hebelzug (Ratschzug) ist eine aus ovalen Kettengliedern gebildete Kette 25.1 derart hindurchgeführt, dass sich durch das Betätigen des Hebezeugs die Länge des aus einem Gehäuse 31 der Längeneinstellvorrichtung 30 herausführenden Kettenabschnitts der Kette, und damit die Gesamtlänge der Längeneinstellvorrichtung 30 feinfühlig verändern lässt.A chain 25.1 made of oval chain links is passed through the spur gear pulley or alternatively the lever hoist (ratchet hoist) in such a way that the length of the chain section of the chain leading out of a housing 31 of the length adjustment device 30, and thus the overall length, changes when the hoist is actuated the length adjustment device 30 can be sensitively changed.

Von entscheidender Bedeutung für die Sicherheit und vor allem arbeitstechnische Sicherheit ist die in der Längeneinstellvorrichtung 30 verwendete Kette. Diese ist nicht die in Stirnradzügen und Hebelzügen übliche, einfache Zuggliederkette, sondern sie ist von dem Bautyp der Anschlagkette 25.1. Anschlagketten 25.1 sind normierte Bauteile und sind in den deutschen Industrienormen DIN EN 818-1 bis DIN EN 818-6 spezifiziert. Bei der Anordnung nach Fig. 1 wird also als Längeneinstellvorrichtung 30 ein Hebezeug in der Ausgestaltung als ein Stirnrad-Flaschenzug (Stirnradzug) oder ein Hebelzug mit integrierter Ratschenfunktion (Ratschzug) als Anschlagmittel verwendet.The chain used in the length adjustment device 30 is of decisive importance for safety and above all for work-related safety. This is not the simple tension link chain that is usual in spur wheel hoists and lever hoists, but it is of the construction type of the sling chain 25.1. Sling chains 25.1 are standardized components and are specified in the German industrial standards DIN EN 818-1 to DIN EN 818-6. According to the arrangement 1 a hoist in the form of a spur gear pulley block (spur gear hoist) or a lever hoist with an integrated ratchet function (ratchet hoist) is used as a sling as the length adjustment device 30 .

Oben an dem Gehäuse 31 der Längeneinstellvorrichtung 30 ist ein hoch belastbarer Haken 28 befestigt. Der Haken 28 kann gegenüber dem Gehäuse 31 drehbar gelagert sein. Mit dem Haken 28 ist das Gehäuse 31 in den oberen Verbindungspunkt 21 des Zugstrangs 11 in Stranglängsrichtung starr eingehängt.A heavy duty hook 28 is attached to the top of the housing 31 of the length adjuster 30 . The hook 28 can be rotatably mounted relative to the housing 31 . With the hook 28, the housing 31 is rigidly hung in the upper connection point 21 of the tension cord 11 in the longitudinal direction of the cord.

Das Gehäuse 31 nimmt in axialer Anordnung hintereinander und quer zur Längserstreckung des Zugstrangs 11 ein Antriebsrad 32, eine Lastdruckbremse 33, ein Lastrad 34 und ein Getriebe 35 auf. Das Antriebsrad 32 ist an einem Ende einer sich quer zu dem Zugstrang 11 erstreckenden Antriebswelle 37 vorgesehen. Die Antriebswelle 37 ist zentral angeordnet und durchsetzt die Lastdruckbremse 33 und das Lastrad 34. Das Antriebsrad 32 ist über die Antriebswelle 37 mit dem am anderen Ende der Antriebswelle 37 befindlichen, auf das Lastrad 34 abtreibenden Getriebe 35 koppelbar. Das Getriebe 35 ist z. B. als Planetengetriebe ausgebildet.The housing 31 accommodates a drive wheel 32 , a load pressure brake 33 , a load wheel 34 and a gear 35 in an axial arrangement one behind the other and transversely to the longitudinal extension of the tension cord 11 . The drive wheel 32 is provided at one end of a drive shaft 37 extending transversely to the traction cord 11 . The drive shaft 37 is arranged centrally and passes through the load pressure brake 33 and the load wheel 34. The drive wheel 32 is connected via the drive shaft 37 to the other end of the drive shaft 37 on the load wheel 34 abortive gear 35 can be coupled. The gear 35 is z. B. formed as a planetary gear.

Das Lastrad 34 ist, gleichmäßig über seinen Umfang verteilt, mit Kettengliedkammern 34A zur formschlüssigen Aufnahme der einzelnen Kettenglieder der Anschlagkette 25.1 versehen. Dabei umschlingt die Anschlagkette 25.1 das Lastrad 34 über einen Umschlingungswinkel von ca. 180 °. Die Form der Kettengliedkammern 34A ist auf die spezielle Geometrie der ovalen Kettenglieder der Anschlagkette 25.1 abgestimmt.The load wheel 34 is evenly distributed over its circumference with chain link chambers 34A for positively receiving the individual chain links of the chain sling 25.1. The sling chain 25.1 wraps around the load wheel 34 over a wrap angle of approximately 180°. The shape of the chain link chambers 34A is matched to the special geometry of the oval chain links of the chain sling 25.1.

Die Anschlagkette 25.1 ist an ihrem lastseitigen Ende mit einem Ring versehen, der den unteren Verbindungspunkt 22 bildet. Auch dieser durch Schmieden hergestellte Ring erfüllt die Spezifikation eines Anschlagmittels und ist zum Beispiel in den deutschen Industrienormen DIN EN 1677-1 bis DIN EN 1677-6 näher spezifiziertThe sling chain 25.1 is provided with a ring at its load-side end, which forms the lower connection point 22. This forged ring also meets the specification of a sling and is specified in more detail, for example, in the German industrial standards DIN EN 1677-1 to DIN EN 1677-6

Das lastfreie andere Ende der Anschlagkette 25.1 kann entweder frei aus dem Gehäuse 31 herabhängen, oder in einer Kettenbox aufgefangen sein.The load-free other end of the chain sling 25.1 can either hang down freely from the housing 31 or be caught in a chain box.

Die Lastdruckbremse 33 kann dazu ausgebildet sein, mittels Reibschluss oder mittels Formschluss zu arbeiten, oder durch eine Kombination aus Reibschluss und Formschluss. Vorzugsweise setzt sich die Lastdruckbremse 33 aus einer Klinkenscheibe 39, beidseitig der Klinkenscheibe 39 angeordneten Friktionsscheiben sowie Sperrklinken zusammen. Die Sperrklinken sind schwenkbar am Gehäuse 31 gelagert und liegen unter Federdruck an Sperrzähnen der Klinkenscheibe 39 an. Die beiden Friktionsscheiben treten einmal mit der Klinkenscheibe 39, und zum anderen mit einer an der Antriebswelle 37 festgelegten Druckscheibe bzw. mit dem Antriebsrad 32 in eine reibschlüssige Verbindung.The load pressure brake 33 can be designed to work by means of frictional locking or by means of a positive locking, or by a combination of frictional locking and positive locking. The load pressure brake 33 is preferably composed of a ratchet disk 39, friction disks arranged on both sides of the ratchet disk 39, and pawls. The pawls are pivotally mounted on the housing 31 and rest against ratchet teeth of the ratchet disc 39 under spring pressure. The two friction disks come into a frictional connection with the ratchet disk 39 and with a pressure disk fixed to the drive shaft 37 or with the drive wheel 32 .

Aufgabe der Lastdruckbremse 33 ist, den an dem Stirnrad-Flaschenzug oder alternativ an einem Hebelzug (Ratschzug) jeweils wirkenden Zug zu halten bzw. zu blockieren, wenn das Antriebsrad 32 stillsteht. In diesem Fall ist das Antriebsrad 32 über die Friktionsscheiben und die Klinkenscheibe 39 an die Druckscheibe gedrückt und die Sperrklinken liegen blockierend in den Aussparungen am Umfang der Klinkenscheibe 39.The task of the load pressure brake 33 is to hold or block the train acting on the spur gear pulley block or alternatively on a lever hoist (ratchet hoist) when the drive wheel 32 is stationary. In this case, the drive wheel 32 is pressed against the thrust washer via the friction discs and the ratchet disc 39, and the pawls are locked in the recesses on the circumference of the ratchet disc 39.

Die Antriebswelle 37 ist an dem das Antriebsrad 32 in Form eines Kettenrads für eine Gliederkette 45 tragenden Ende mit einem Gewinde 41 versehen, in das ein Gegengewinde an dem Antriebsrad 32 greift. Eine Schraubendruckfeder 65 beaufschlagt das Antriebsrad 32 in Richtung zu der Lastdruckbremse 33. Eine Platte des Gehäuses 31 dient zusammen mit einer im parallelen Abstand angeordneten weiteren Platte der drehbaren Lagerung des als Kettenrad für die Anschlagkette 25.1 ausgebildeten Lastrads 34. Die Antriebswelle 37 greift mit einem gezahnten Endabschnitt in ein Zahnrad 72 des Getriebes 35. Das Zahnrad 72 kämmt mit Zahnritzeln als Bestandteil von zwei Zahnrädern des Getriebes.The drive shaft 37 is provided with a thread 41 at the end carrying the drive wheel 32 in the form of a chain wheel for a link chain 45, into which a counter-thread on the drive wheel 32 engages. A helical compression spring 65 acts on the drive wheel 32 in the direction of the load pressure brake 33. A plate of the housing 31, together with a further plate arranged at a parallel distance, serves to rotatably support the as a chain wheel for the sling chain 25.1 trained load wheel 34. The drive shaft 37 engages with a toothed end portion in a gear 72 of the gear 35. The gear 72 meshes with pinions as part of two gears of the gear.

Zur Verkürzung jenes Zugstrangs 11, 12, 13, dessen Bestandteil die Längeneinstellvorrichtung 30 ist, wird durch Ziehen an der über das Antriebsrad 32 führenden Gliederkette 45 das Antriebsrad 32 im Uhrzeigersinn gedreht. Da sich das Antriebsrad 32 zunächst frei gegenüber der Antriebswelle 37 drehen kann, erfolgt zunächst eine Relativverdrehung des Antriebsrads 32 zur Antriebswelle 37, die aber dann endet, so dass ab dann die Antriebswelle 37 im Uhrzeigersinn dreht. Es erfolgt somit eine direkte Drehmomentübertragung vom Antriebsrad 32 über die Antriebswelle 37 und das Getriebe 35 auf das Lastrad 34.To shorten that tension cord 11, 12, 13, which is part of the length adjustment device 30, the drive wheel 32 is rotated clockwise by pulling on the link chain 45 leading over the drive wheel 32. Since the drive wheel 32 can initially rotate freely relative to the drive shaft 37, the drive wheel 32 rotates relative to the drive shaft 37 at first, but this then ends, so that from then on the drive shaft 37 rotates clockwise. There is thus a direct torque transmission from the drive wheel 32 via the drive shaft 37 and the gear 35 to the load wheel 34.

Aufgrund eines rechtsgängigen Gewindes zwischen Bremsscheibe und Antriebswelle 37 hebt sich bei der Drehung des Antriebsrads 32 im Uhrzeigersinn die Bremsscheibe der Lastdruckbremse 33 von der Friktionsscheibe ab. Die wirksame Länge der Längeneinstellvorrichtung 30 wird also ohne Bremswirkung verkürzt. Wird aber das Antriebsrad 32 zum Stillstand gebracht, bewirkt die Last am Lastrad 34 dessen Drehen gegen den Uhrzeigersinn, wodurch die Antriebswelle 37 dreht. Aufgrund dessen wird die Bremsscheibe gegen die Friktionsscheibe gezogen. Die erreichte wirksame Länge der Längeneinstellvorrichtung 30 wird also fixiert.Due to a right-hand thread between the brake disc and the drive shaft 37, the brake disc of the load pressure brake 33 lifts off the friction disc when the drive wheel 32 rotates clockwise. The effective length of the length adjustment device 30 is thus shortened without a braking effect. However, when the drive wheel 32 is brought to a standstill, the load on the load wheel 34 causes it to rotate counterclockwise, causing the drive shaft 37 to rotate. Because of this, the brake disc is pulled against the friction disc. The effective length achieved by the length adjustment device 30 is thus fixed.

Soll hingegen die wirksame Länge der Längeneinstellvorrichtung 30 vergrößert werden, wird das Antriebsrad 32 durch umgekehrtes Ziehen an der Gliederkette 45 gegen den Uhrzeigersinn gedreht. Erst nach einem vorbestimmten Leerdrehwinkel kommt es zu einer Mitnahme, so dass sich die Bremsscheibe in Axialrichtung der Antriebswelle 37 verlagert und von der Friktionsscheibe abgehoben wird. Der am Lastrad 34 wirkende Zug in der Anschlagkette 25.1 bewirkt eine Relativverdrehung der Antriebswelle 37 zum Antriebsrad 32, wodurch die Bremsscheibe gegen die Friktionsscheibe gezogen wird.However, if the effective length of the length adjustment device 30 is to be increased, the drive wheel 32 is rotated counterclockwise by pulling the link chain 45 in the opposite direction. Driving occurs only after a predetermined angle of idle rotation, so that the brake disc is displaced in the axial direction of the drive shaft 37 and is lifted off the friction disc. The tension in the sling chain 25.1 acting on the load wheel 34 causes the drive shaft 37 to rotate relative to the drive wheel 32, as a result of which the brake disc is pulled against the friction disc.

Durch händisches Ziehen an der Gliederkette 45 in die eine Richtung wird also die wirksame Länge der Längeneinstellvorrichtung 30 vergrößert und durch Ziehen in die andere Richtung wird die wirksame Länge der Längeneinstellvorrichtung 30 verkürzt, um so die Gesamtlänge des betreffenden Zugstrangs 11 zu verändern, und damit die Höhenlage der Last F.By manually pulling on the link chain 45 in one direction, the effective length of the length adjustment device 30 is increased, and by pulling in the other direction, the effective length of the length adjustment device 30 is shortened, in order to change the overall length of the traction cord 11 in question, and thus the Altitude of the load F.

BezugszeichenlisteReference List

1010
Tragelementsupporting element
1111
Zugstrangtension cord
11A11A
unterer Lastangriffspunktlower load application point
1212
Zugstrangtension cord
12A12A
unterer Lastangriffspunktlower load application point
1313
Zugstrangtension cord
13A13A
unterer Lastangriffspunktlower load application point
2121
oberer Verbindungspunkt der Längeneinstellvorrichtungupper connection point of the length adjuster
2222
unterer Verbindungspunkt der Längeneinstellvorrichtunglower connection point of the length adjuster
25.125.1
Anschlagkettesling chain
25.225.2
Anschlagkettesling chain
25.325.3
Anschlagkettesling chain
2828
Hakenhook
3030
Längeneinstellvorrichtunglength adjustment device
3131
GehäuseHousing
3232
Antriebsraddrive wheel
3333
Lastdruckbremseload pressure brake
3434
Lastradload wheel
34A34A
Kettengliedkammerchain link chamber
3535
Getriebetransmission
3737
Antriebswelledrive shaft
3939
Klinkenscheiberatchet disc
4141
Gewindethread
4545
Gliederkettelink chain
6565
Schraubendruckfederhelical compression spring
7272
Zahnradgear
FHFH
Hebekraftlifting power
Ff
Lastload

Claims (6)

Anordnung zum Ausrichten einer angehobenen Last (F), umfassend ein starr ausgebildetes Tragelement (10) und mindestens zwei an dem Tragelement (10) befestigte und von diesem herab sich erstreckende Zugstränge (11, 12, 13), deren untere Enden zur Befestigung an jeweils unterschiedlichen Lastangriffspunkten (11A, 12A, 13A) an der Last (F) ausgebildet sind, wobei Bestandteil mindestens eines Zugstrangs (11) eine sich zwischen einem oberen Verbindungspunkt (21) und einem unteren Verbindungspunkt (22) erstreckende Längeneinstellvorrichtung (30) ist, dadurch gekennzeichnet, dass die Längeneinstellvorrichtung (30) ein an dem oberen Verbindungspunkt (21) gelenkig befestigtes Gehäuse (31) und eine in dem Gehäuse (31) drehbar gelagerte Antriebswelle (37) aufweist, entlang der ein Antriebsrad (32), eine Lastdruckbremse (33), ein Lastrad (34) und ein Getriebe (35), welches die Antriebswelle (37) mit dem Lastrad (34) koppelt, angeordnet sind, dass das Lastrad (34) über seinen Umfang mit Kettengliedkammern (34A) für die einzelnen Kettenglieder einer um das Lastrad (34) geführten Anschlagkette (25.1) versehen ist, und dass die Anschlagkette (25.1) mit einem ihrer Enden an dem unteren Verbindungspunkt (22) befestigt ist.Arrangement for aligning a raised load (F), comprising a rigid support element (10) and at least two tension cords (11, 12, 13) attached to the support element (10) and extending therefrom, the lower ends of which are for attachment to each different load application points (11A, 12A, 13A) are formed on the load (F), wherein a component of at least one pull cord (11) is a length adjustment device (30) extending between an upper connection point (21) and a lower connection point (22), characterized characterized in that the length adjustment device (30) has a housing (31) articulated to the upper connection point (21) and a drive shaft (37) rotatably mounted in the housing (31) along which a drive wheel (32), a load pressure brake (33 ), A load wheel (34) and a gear (35), which couples the drive shaft (37) to the load wheel (34), are arranged such that the load wheel (34) has a chain link over its circumference chambers (34A) for the individual chain links of a sling chain (25.1) guided around the load wheel (34), and that the sling chain (25.1) is fastened with one of its ends to the lower connection point (22). Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass auch an jedem der weiteren Zugstränge (12, 13) zumindest ein Längsabschnitt des Zugstrangs durch eine Anschlagkette (25.2, 25.3) gebildet wird.Arrangement according to Claim 1, characterized in that at least one longitudinal section of the tension cord is also formed by a sling chain (25.2, 25.3) on each of the further tension cords (12, 13). Anordnung nach Anspruch 1 oder 2, gekennzeichnet durch insgesamt zwei an dem Tragelement (10) befestigte und von diesem herab sich erstreckende Zugstränge, deren untere Enden an einander abgewandten Lastangriffspunkten (11A, 12A, 13A) an der Last (F) befestigbar sind, wobei nur einer der zwei Zugstränge mit der Längeneinstellvorrichtung (30) versehen ist.Arrangement according to claim 1 or 2, characterized by a total of two tension cords attached to the support element (10) and extending downwards from it, the lower ends of which can be attached to the load (F) at load application points (11A, 12A, 13A) facing away from one another, wherein only one of the two pull cords is provided with the length adjustment device (30). Anordnung nach Anspruch 1 oder 2, gekennzeichnet durch insgesamt drei an dem Tragelement (10) befestigte und von diesem herab sich erstreckende Zugstränge, wobei das untere Ende des ersten Zugstrangs (11) einerseits, und die unteren Enden des zweiten und dritten Zugstrangs (12, 13) andererseits an einander abgewandten Lastangriffspunkten (11A bzw. 12A, 13A) an der Last (F) befestigbar sind, wobei nur einer oder nur zwei der drei Zugstränge mit der Längeneinstellvorrichtung (30) versehen ist/sind.Arrangement according to Claim 1 or 2, characterized by a total of three tension cords attached to the support element (10) and extending downwards therefrom, the lower end of the first tension cord (11) on the one hand and the lower ends of the second and third tension cord (12, 13) on the other hand can be fastened to the load (F) at load application points (11A or 12A, 13A) facing away from one another, with only one or only two of the three pull cords being provided with the length adjustment device (30). Anordnung nach Anspruch 1 oder 2, gekennzeichnet durch insgesamt vier an dem Tragelement (10) befestigte und von diesem herab sich erstreckende Zugstränge, wobei die unteren Enden des ersten und zweiten Zugstrangs einerseits, und die unteren Enden des dritten und vierten Zugstrangs andererseits an einander abgewandten Lastangriffspunkten an der Last (F) befestigbar sind, wobei nur entweder der erste oder der zweite Zugstrang und zugleich entweder der dritte oder der vierte Zugstrang mit der Längeneinstellvorrichtung (30) versehen sind.Arrangement according to Claim 1 or 2, characterized by a total of four tension cords attached to the support element (10) and extending downwards therefrom, the lower ends of the first and second tension cord on the one hand and the lower ends of the third and fourth tension cord on the other hand facing away from one another Load application points on the load (F) can be fastened, only either the first or the second pull cord and at the same time either the third or the fourth pull cord being provided with the length adjustment device (30). Anordnung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine über das Antriebsrad (32) geführte Rundgliederkette (45) zum manuellen Drehen des Antriebsrads (32).Arrangement according to one of the preceding claims, characterized by a round link chain (45) guided over the drive wheel (32) for manual rotation of the drive wheel (32).
EP22174419.6A 2021-05-26 2022-05-19 Device for aligning a raised load Active EP4095083B1 (en)

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DE102021113489.7A DE102021113489A1 (en) 2021-05-26 2021-05-26 Arrangement for leveling a lifted load

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EP4095083A1 true EP4095083A1 (en) 2022-11-30
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116425017B (en) * 2023-05-17 2023-11-03 重庆光能振亿科技有限公司 Auxiliary hoisting equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1964863U (en) * 1967-04-29 1967-07-27 Pfeiffer Fa Ed LIFTING EQUIPMENT.
EP0018127B1 (en) 1979-04-03 1983-04-27 Elephant Chain Block Company Limited Hoist
DE3323110A1 (en) 1982-07-02 1984-01-05 Kabushiki Kaisha Kito, Kawasaki, Kanagawa LEVER LIFT
DE9105100U1 (en) * 1991-04-25 1992-08-27 Spanset Inter Ag, Oetwil Am See Continuously adjustable sling for lifting equipment
CN105858435A (en) * 2016-04-26 2016-08-17 中国海洋石油总公司 Technology for hoisting strip-shaped inclined steel structures in place through single crane

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058006B (en) 1979-09-13 1983-03-16 Standard Telephones Cables Ltd Telescopic hoist
GB2063210A (en) 1979-11-13 1981-06-03 British Steel Corp Lifting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1964863U (en) * 1967-04-29 1967-07-27 Pfeiffer Fa Ed LIFTING EQUIPMENT.
EP0018127B1 (en) 1979-04-03 1983-04-27 Elephant Chain Block Company Limited Hoist
DE3323110A1 (en) 1982-07-02 1984-01-05 Kabushiki Kaisha Kito, Kawasaki, Kanagawa LEVER LIFT
DE9105100U1 (en) * 1991-04-25 1992-08-27 Spanset Inter Ag, Oetwil Am See Continuously adjustable sling for lifting equipment
CN105858435A (en) * 2016-04-26 2016-08-17 中国海洋石油总公司 Technology for hoisting strip-shaped inclined steel structures in place through single crane

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DE102021113489A1 (en) 2022-12-01
US20220380182A1 (en) 2022-12-01

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