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EP1369374B1 - Dispositif de changement de mouflage pour grue - Google Patents

Dispositif de changement de mouflage pour grue Download PDF

Info

Publication number
EP1369374B1
EP1369374B1 EP03356077A EP03356077A EP1369374B1 EP 1369374 B1 EP1369374 B1 EP 1369374B1 EP 03356077 A EP03356077 A EP 03356077A EP 03356077 A EP03356077 A EP 03356077A EP 1369374 B1 EP1369374 B1 EP 1369374B1
Authority
EP
European Patent Office
Prior art keywords
pulley
jib
rigging
blocks
lifting
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.)
Expired - Lifetime
Application number
EP03356077A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1369374A1 (fr
Inventor
Christoph Eiwan
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP1369374A1 publication Critical patent/EP1369374A1/fr
Application granted granted Critical
Publication of EP1369374B1 publication Critical patent/EP1369374B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • 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
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/043—Block and tackle system with variable number of cable parts

Definitions

  • the present invention relates to a crane boom, in particular a luffing boom, combined with a device for changing the hauling, this device making it possible to change the hauling of the hoisting rope between a single-strand haul and a two-haft haul, and conversely, without dismantling the muffle.
  • the hoisting rope passes over one or more pulleys carried by the jib, the muffle provided with a lifting hook being suspended, by means of the hoisting rope, under the jib .
  • the number of vertical strands formed by the hoisting rope, between the boom tip and the muffle, determines the "hauling".
  • This number of strands can be made modifiable by a change of hauling device to adapt the crane to various conditions of use of the crane.
  • the hauling of the strands determines the lifting speed, a single-strand haul being suitable for fast lifting, for a relatively low load, while a two-sided haul is suitable for lifting at lower speed, heavier loads.
  • the arrowhead requires a particular construction, box-shaped beak, to take the width of the muffle, and it also requires a cable passage outside the arrow, with two pulleys.
  • the structure of the arrowhead must be important, to take the bending forces due to the beak shape of the tip of the arrowhead. This results, for the arrowhead, a complexity of realization and a weight high, making itself necessary an arrow pull attachment located further forward.
  • the lifting muffle As for the lifting muffle, it has an asymmetrical shape that can cause undesirable rotation of the muffle in windy conditions. Furthermore, the muffle has feet for its removal to the ground on one side, in case of single-hauling, which requires manual guidance of the muffle during its removal to the ground for maintenance.
  • the document US Patent 3648979 discloses another hoisting device, for hoisting apparatus, which also allows a change of hauling between a single-strand haul and a two-haly haul, and vice versa.
  • the lifting muffle here has a housing housing a horizontal axis pulley, and it also comprises means for retaining the end of the hoisting rope, for single-strand hauling. In the case of single-strand haulage (see Figure 3), the muffle occupies an inclined position.
  • the lateral offset of the pulley of the arrowhead, in two-legged haul is substantially equal to the horizontal distance between the point of attachment provided on the arrowhead and the vertical median plane of the arrow; thus, in two-leg hauling, the lifting hook is also in the vertical median plane of the boom.
  • the lateral shift system of the single pulley of the boom tip is feasible in a variety of ways.
  • this pulley is mounted in a pulley box, constituted in particular by two vertical plates parallel to the vertical median plane of the boom, said pulley box being slidably mounted on at least two horizontal rails oriented transversely to the arrow, means being provided for blocking the pulley box, therefore for positioning the pulley, either in the middle position for the single-brown haul, or in the lateral position for the two-leg haul.
  • the pulley of the arrowhead is mounted displaceable in translation on a horizontal shaft oriented transversely to the boom, the pulley being placed between two lateral flanges mounted around said shaft and provided to be locked in translation on said shaft. , for example by means of pins, in selected axial positions which keep the pulley in the middle position, for one-strand haul, or in the lateral position, for two-leg haul.
  • the pulley of the arrowhead is integral with a horizontal shaft oriented transversely to the boom, the shaft being movable in translation in its bearings so that the assembly constituted by the pulley and its shaft is displaceable. transversely for the passage from the single-strand haul position, with the pulley in the middle position, to the two-strand haul position, with the shifted pulley laterally, or vice versa.
  • the invention provides that, on the arrowhead, the transversely movable single pulley is replaced by two coaxial pulleys, in particular mounted on the same horizontal shaft oriented transversely to the arrow with a first pulley located centrally, substantially in the vertical median plane of the boom, for single-strand haul, and with a second laterally located shifter offset from the vertical median plane of the boom, for hauling two strands, the passage of single-strand haul to two-strand hauling, or vice versa, being performed by passing the hoist rope from the first pulley to the second pulley, or vice versa.
  • the crane boom with a change of hauling device further comprises means for temporarily fixing the lifting muffle under the arrowhead.
  • means for temporarily fixing the lifting muffle under the arrowhead are feasible in the form of a tab, single or double, integral with the frame of the arrowhead and directed downwards, said tab being adapted to be traversed, at its lower part, by a removable connecting pin with the upper part of the lifting muffle casing, brought to its highest position.
  • the guide means for the hoisting rope are constituted, in a particular embodiment, by a guide curved carried by an arm pivotally mounted in the housing of the muffle, the guide thus being movable between an active upper position, substantially tangential to the pulley of the muffle, and guiding the cable towards the center of the upper part of the muffle housing , for the single-strand haulage, and a retracted lower position, for the two-strand haul, means being provided for the non-permanent immobilization of said guide in one or the other of its two positions.
  • the guiding means for the hoisting rope consist of a shoe taking place inside the casing of the lifting block, above the pulley of the block, the shoe having a curved side guiding the hoist. cable, placed on this side, towards the center of the upper part of the muffle housing, means being provided for the non-permanent attachment of said shoe in the housing of the muffle.
  • the casing of the lifting muffle is provided at its lower part, feet for its installation on the ground, especially for maintenance operations.
  • Figures 1 and 2 partially show the arrowhead 2 of a luffing jib crane, the arrow being here assumed in a horizontal position. These figures also show part of the hoisting equipment of the crane, comprising a hoisting rope 3, and a lifting block 4 which carries a hoisting hook 5.
  • the hoisting rope 3, actuated by a non hoisting winch shown, may form a two-strand haul 3a and 3b ( Figure 1), or a single-strand haul 3c ( Figure 2).
  • a haul-change device makes it possible to switch from double-haul haul 3a, 3b to single-haul haul 3c, and vice versa from single-haul haul 3c to haul 2-haul 3a, 3b.
  • This device comprises particular arrangements of the arrowhead 2 and the lifting muffle 4.
  • the arrowhead 2 carries a single pulley 6, on which the lifting cable 3 passes from the rear of the boom, the pulley 6 thereby deflecting the cable 3 downwards, towards the muffle 4 located under the tip 2.
  • the pulley 6, located in a vertical plane, is mounted on a horizontal shaft 7, oriented transversely to the arrow.
  • the pulley 6 can be displaced in translation along the horizontal shaft 7, according to the arrow 8.
  • the two cheeks 9 and 10 are provided with pins (not shown), which allow their locking in translation in various positions on the shaft 7.
  • a tab 11, directed downwards, is fixed to the frame of the arrowhead 2, more particularly to an end crosspiece 12 of this framework, located just in front of the pulley 6.
  • the lug 11 has a hole 13 towards its free bottom end.
  • a yoke 14 Under the crosspiece 12 is also fixed a yoke 14, at the lower end of which is mounted a swivel 15 serving as an attachment point for the end of the hoisting cable 3, this cable end being provided with a box. corner 16.
  • the yoke 14 with its swivel 15 is located on the side of the lug 11, and is thus laterally offset relative to the vertical median plane P of the arrowhead 2 (see also Figures 3 and 4).
  • the lifting muffle 4 has a generally symmetrical housing, consisting mainly of two parallel plates 17 and 18, joined to each other, the two plates 17 and 18 being substantially rectangular, and vertical.
  • the lifting hook 5 is attached to a horizontal axis 19 which connects the two plates 17 and 18 in their lower part.
  • a pulley 20 rotatably mounted on a horizontal axis 21 which connects the two plates 17 and 18.
  • the casing of the lifting muffle 4 is provided at its lower part with two feet 22 and 23, fixed between the two plates 17 and 18 on either side of the lifting hook 5.
  • the lifting muffle casing 4 comprises means for attaching the end of the lifting cable 3.
  • These means here consist of two holes 24 and 25, formed in correspondence in the upper parts of the two plates 17 and 18, and by an axle 26 which can be engaged removably in the two holes 24, 25 and in the box. at the corner 16 of the end of the lifting cable 3.
  • the two plates 17 and 18 further comprise other respective holes 27 and 28, formed in correspondence and provided to receive a removable pin 29, for connecting the lifting muffle 4 to the lug 11 during operations. change of hauling.
  • the lifting muffle 4 is equipped with a curved guide 30, carried by a pivoting arm 31.
  • the curved guide 30 has a groove 32, adapted to the size of the lifting cable 3.
  • the arm pivoting 31 is articulated about a horizontal axis 33, located on one of the vertical sides of the muffle 4.
  • the curved guide 30 is movable, by pivoting the arm 31 about the axis 33, between an upper position active, substantially tangent to the pulley 20 (see Figures 2 and 3), and a retracted lower position ( Figure 1).
  • Means, such as a removable axle or pin, are provided for non-permanently securing the curved guide 30 in either of the two positions indicated above.
  • the horizontal pivot axis 33 carries, at one of its ends, an external operating rod or handle (not shown), which can be used to control the passage of the curved guide 30 from its active position to its retracted position, and Conversely.
  • the hoisting rope 3 passes around the lower part of the pulley 20 of the lifting block 4.
  • the pulley 6 of the arrowhead 2 is shifted laterally, and maintained in this position shifted on the shaft 7 by locking in translation of the two cheeks 9 and 10, visible in Figure 2.
  • the corner box 16 of the end of the lifting cable 3 is attached to the swivel 15 carried by the yoke 14 of the arrowhead 2.
  • the curved guide 30 is placed and immobilized in its lower retracted position, so that it does not intervene.
  • the shifted position of the pulley 6, and the position of the attachment point (swivel 15) of the end of the cable 3, are such that the lifting muffle 4 is substantially perpendicular to the vertical median plane P of the arrow.
  • the two strands 3a and 3b formed by the hoisting cable are located in the same vertical plane, perpendicular to the vertical median plane P of the arrow.
  • the lifting axis that is to say, the vertical axis of the hook 5, is contained in the vertical median plane P of the arrow.
  • the transverse vertical plane, containing the lifting block 4 passes substantially through the end cross-member 12 of the arrowhead 2, so that the maximum reach of the crane is not reduced (for an arrow length data).
  • the pulley 6 of the arrowhead 2 is placed in the vertical median plane P of the arrow, and it is held in this median position on the shaft 7 by locking in translation of the two cheeks 9 and 10.
  • the corner box 16 of the end of the lifting cable 3 is attached to the lifting block 4, more particularly on the axis 26 engaged in the two holes 24 and 25.
  • the curved guide 30 occupies its upper active position, and it is immobilized in this position.
  • the single strand 3c of the lifting cable 3 is guided towards the center of the upper part of the casing 17, 18 of the muffle 4.
  • the lifting block 4 is suspended in a symmetrical and balanced manner, the lifting axis being located again in the vertical median plane P of the boom, and closer to the end (crossbar 12) of the arrowhead 2.
  • the lifting luff of the crane concerned is first brought into horizontal position.
  • the usual working platform, not shown, is brought towards the arrowhead 2, to allow the intervention of an operator.
  • the position "mounting" of the crane is selected, for a decommissioning of the limiters of stroke of the crane.
  • the lifting muffle 4 is then brought to its highest position, just below the end crossmember 12 of the jib 2, beyond the maximum position of limitation of high stroke of the lifting hooks 5.
  • the muffle 4 is fixed temporarily under the arrowhead 2, by engagement of the axis 29 simultaneously in the two holes 27 and 28 of the plates 17 and 18 of the muffle 4, and in the hole 13 of the lug 11 secured to the end cross 12 of the arrowhead 2.
  • the lifting cable 3 is then given "slack", and the pin connecting the corner box 16 to the swivel 15 is removed. The end of the cable 3 thus becomes free. This end is then attached to the casing 17, 18 of the muffle 4, by engagement of the shaft 26 through the two holes 24, 25 and the corner box 16.
  • the pulley 6 of the arrowhead 2 is unlocked, and it is moved on its shaft 7 to be positioned in the vertical median plane P of the arrow.
  • the pulley 6 is locked in this new position, median.
  • the curved guide 30 is brought into its active upper position, and it is locked in this position, so as to "center” the lifting cable engaged in its groove 32. Then, the cable 3 is stretched by actuation of the hoist winch, until relieving the connection between the muffle 4 and the lug 11. This connection is then removed by removing the axis 29.
  • the work platform is finally moved back to its non-use position, and the "work" position of the crane is selected at the control station thereof.
  • the lifting muffle 4 comprises, in its upper part, a fixed counter-form 41 situated opposite the active upper position of the curved guide 30.
  • the lifting cable 3 passes between the curved guide 30 and the counter-form 41, which guarantees its positioning in the center of the upper part of the casing 17, 18 of the muffle 4.
  • FIG. 4 shows a variant of the lifting muffle 4, in which the pivoting curved guide, previously described, is replaced by a shoe 34 placed inside the muffle casing 4, that is to say between the two plates 17 and 18, above the pulley 20.
  • the shoe 34 has a curved side, which guides the hoisting rope 3, placed on this side, towards the center of the upper part of the muffle 4.
  • This shoe 34 is immobilized in position non-permanently in the housing 17, 18 of the muffle, for example by means of two axes 35 and 36.
  • FIG. 5 Another variant, relating to the mounting of the pulley 6 of the arrowhead 2, is illustrated in FIG. 5.
  • the pulley 6 is here rotatably mounted, on an axis 7, in a pulley box consisting of two plates vertical lines 37 and 38, parallel to each other and to the vertical median plane of the arrow.
  • the pulley box 37, 38 is slidably mounted along the arrow 8 on two horizontal rails 39 and 40, oriented transversely to the arrow.
  • Unrepresented means are provided for locking the pulley box 37, 38 either in a middle position, for single-stranded hauling, or in a laterally offset position, for two-strand hauling, the structure and operation of the change of hawking not being modified for the rest.
  • FIG. 6 illustrates yet another variant of the assembly of the pulley 6 of the arrowhead 2.
  • the pulley 6 is here integral with its horizontal shaft 7, which is mounted both rotating and movable in translation (arrow 8) in bearings 41 and 42.
  • the assembly consisting of the pulley 6 and its shaft 7 which is moved transversely, to move from the single-strand haul position 3c, with the pulley 6 in the middle position, to the two-strand haul position 3a, 3b, with the same pulley 6 shifted laterally.
  • FIG. 7 illustrates an alternative solution in which, on the arrowhead 2, the single pulley 6, which is transversally movable, of the preceding embodiments is replaced by two coaxial pulleys 6a and 6b, mounted on the same horizontal shaft 7. oriented transversely to the arrow.
  • the first pulley 6a is centrally located, i.e. in the vertical median plane of the boom, and is used for single-strand haul.
  • the second pulley 6b is located in a lateral position, thus offset from the vertical median plane of the boom, and is used for two-strand hauling.
  • the passage from one-strand to two-stranded haulage, or vice versa, is performed by passing the hoisting rope from the pulley 6a to the pulley 6b, or from the pulley 6b to the pulley 6a.
  • the operation is performed manually, when the muffle 4 is temporarily fixed under the arrowhead 2 (as described above).
  • the device for changing the hauling, object of the invention is particularly applicable to luffing jib cranes without trolley, high height, and working at high lifting speeds.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP03356077A 2002-06-04 2003-05-13 Dispositif de changement de mouflage pour grue Expired - Lifetime EP1369374B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0206869 2002-06-04
FR0206869A FR2840292B1 (fr) 2002-06-04 2002-06-04 Dispositif de changement de mouflage pour grue

Publications (2)

Publication Number Publication Date
EP1369374A1 EP1369374A1 (fr) 2003-12-10
EP1369374B1 true EP1369374B1 (fr) 2008-01-09

Family

ID=29433314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03356077A Expired - Lifetime EP1369374B1 (fr) 2002-06-04 2003-05-13 Dispositif de changement de mouflage pour grue

Country Status (8)

Country Link
US (1) US6908074B2 (ru)
EP (1) EP1369374B1 (ru)
JP (1) JP2004010354A (ru)
KR (1) KR100955692B1 (ru)
DE (1) DE60318518T2 (ru)
ES (1) ES2298486T3 (ru)
FR (1) FR2840292B1 (ru)
RU (1) RU2305062C2 (ru)

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US7367547B2 (en) * 2005-12-27 2008-05-06 Design Research & Development Corp. Lifting device with release mechanism that moves with lifted object
US7946560B2 (en) * 2009-02-25 2011-05-24 Manitowoc Crane Companies, Llc Crane hook block
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JP5110014B2 (ja) * 2009-03-23 2012-12-26 コベルコクレーン株式会社 フック装置
GB0909800D0 (en) * 2009-06-08 2009-07-22 Kingsfield Engineering Services Hoist system and method of hoisting
US8480060B2 (en) * 2010-01-15 2013-07-09 T.B. Penick & Sons, Inc. Crane cable roller assembly
CN102642783B (zh) * 2012-05-19 2014-05-14 南京工业大学 一种可快速装拆平衡重的塔机
AU2013204595A1 (en) * 2012-09-26 2014-04-10 Heydon, Mathew Kevin MR Load Transfer Device
RU2561423C2 (ru) * 2013-02-14 2015-08-27 Акционерное общество "ГОЗ Обуховский завод" Универсальный двухблочный узел
CN103231988B (zh) * 2013-05-20 2015-05-13 中联重科股份有限公司 塔式起重机及其小车和绕绳倍率变化方法
FR3015963B1 (fr) * 2013-12-27 2016-01-22 Zedel Dispositif de mouflage ameliore
ES2688530T3 (es) * 2014-06-02 2018-11-05 Grupo Antolin-Ingenieria, S.A. Conjunto de fijación de una polea de un elevalunas
KR101661905B1 (ko) * 2014-09-04 2016-10-04 삼성중공업 주식회사 크레인 장치
CN104310240A (zh) * 2014-10-11 2015-01-28 徐州建机工程机械有限公司 一种塔式起重机倍率自动转化装置
CN104355243B (zh) * 2014-10-30 2016-08-24 徐州建机工程机械有限公司 一种动臂塔机倍率变换装置
DE102015109900B4 (de) * 2015-06-19 2017-05-04 Terex Mhps Gmbh Unterflasche, insbesondere für Seilzüge, und Montageverfahren für ein Abdeckelement an der Seilflasche
JP6558229B2 (ja) * 2015-12-01 2019-08-14 コベルコ建機株式会社 フック装置
KR101818942B1 (ko) 2016-03-11 2018-03-02 주식회사 성진이앤아이 자중식 와이어 이탈 방지 모듈이 탑재된 통 크레인 장치
US9862577B2 (en) * 2016-04-01 2018-01-09 Mechanical Devices Company Clamp device for lifting equipment and other items to an elevated position
CN105712200B (zh) * 2016-04-12 2017-08-01 南通润邦重机有限公司 一种具有快速进行绕绳倍率调整功能的吊钩滑车
RU2676586C1 (ru) * 2016-07-20 2019-01-09 Кропотов Сергей Геннадьевич Рабочий грузоподъемный орган экскаватора
RU175295U1 (ru) * 2017-07-21 2017-11-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Белгородский государственный аграрный университет имени В.Я. Горина" Подъёмное устройство
CN108178085B (zh) * 2017-12-08 2020-06-19 北京建筑机械化研究院有限公司 可自动摘挂吊钩结构
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Also Published As

Publication number Publication date
ES2298486T3 (es) 2008-05-16
KR100955692B1 (ko) 2010-05-03
US20030227186A1 (en) 2003-12-11
DE60318518T2 (de) 2009-01-08
DE60318518D1 (de) 2008-02-21
FR2840292A1 (fr) 2003-12-05
JP2004010354A (ja) 2004-01-15
KR20030093978A (ko) 2003-12-11
EP1369374A1 (fr) 2003-12-10
RU2305062C2 (ru) 2007-08-27
FR2840292B1 (fr) 2004-12-24
US6908074B2 (en) 2005-06-21

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