EP2402282A1 - Safety device, boom with safety device and construction machine - Google Patents

Abstract

The device (100) has a rail (110) i.e. aluminum rail, directly and/or indirectly arranged on a side of a stepping plane (30), and a slider (120) movably or slidingly guided in or through the guide. A length adjustable safety strap (130) is attached to the slider, where a protective equipment is suspended by the safety strap. The suspension device comprises a strap tensioner for suspending the protective equipment in a tightened manner. The rail is fixed to a boom, and two coupling points of the safety strap are arranged on the slider. An independent claim is also included for a boom comprising a boom element.

Description

The present invention relates to a safety device, a boom with a safety device and a construction machine.

Cranes often have large arms. Further, it is often necessary to commit the boom of the crane, such as to control the boom or to solve any technical problems by hand. For this purpose, gratings may be provided on the boom, which allow a visit of the crane.

For safety reasons, it is important to provide a safeguard against a crash from the crane boom during the commissioning of the boom.

From the DE 10 2009 018 689 A1 is already known a boom element for a hoist such as a crane. In this case, two extendable support struts are provided on the boom element, which span a safety rope in the unfolded state, to which a user can attach a safety belt for fall protection.

It would be desirable, however, that in several coupled together boom elements, a wrapping of the safety belt is not necessary, because the hanging requires at least a free hand and therefore limits the job opportunities of the worker or crane operator. Furthermore, in such a security system, the user is unsecured for a moment unless he uses a second security belt. This is awkward. Furthermore, it is disadvantageous that the belt can sag, so that in a crash, the case is not stopped immediately, but only at the moment in which the safety belt is tightened by the case.

It is therefore an object of the present invention to further develop a safety device of the type mentioned in an advantageous manner, in particular to the effect that it is simple and safe and allows a backup at any time.

This object is achieved by a securing device with the features of claim 1. Thereafter, it is provided that a securing device, in particular for fall protection of persons on commission of a crane jib, provided with at least one indirectly and / or directly trittebenenseitig arranged Gleitführungsmittel and with at least one guide means is slidably guided in the and / or by the sliding guide means slidably guided, wherein on the guide means a traction means is fastened or fixed, by means of which at least one protective equipment is attached or attached.

The tread plane is in particular the plane on which a user can run along in the built-up state of the device. In the case of a crane boom, for example, this is the top side of the crane jib on which the user can run along on the crane jib.

Due to the step-side arrangement, there is the advantage that the securing device has a very small impairment of the freedom of movement of the user. The user can move almost unrestricted and is at the same time continuously secured. Over the entire length of the Gleitführungsmittels a fuse is possible without it being a Umhänges z. B. from one security system to the next or a renewed backup needs.

For example, it is easily possible to extend the sliding guide means substantially over the entire length of a crane boom, so that the entire crane boom can be committed with a one-time securing operation. This securing operation is preferably carried out at the beginning of walking on the boom by attaching the protective equipment. If the boom consists of several boom elements, the joints can now be bridged between the boom elements, for example, without handles.

The protective equipment can be designed for example as a tight-fitting safety corset or as a safety vest. The protective equipment is preferably designed to carry the weight of the user in the event of a fall. It is conceivable in this context to cushion points with great load in the event of a fall in order to reduce the risk of injury to the user.

In addition, it may be provided that the attachment means comprises at least one tightening means by means of which the protective equipment can be attached in a taut manner, and / or that the attachment means has at least one securing belt means, which is preferably adjustable in length. By virtue of the tightening agent, there is the advantage that the securing belt means is always adjusted to the height and / or posture of the user. Such a tightening agent can be performed, for example, comparable to a belt tensioner in a motor vehicle. This can advantageously be a sagging z. B. a safety belt can be avoided. The safety belt can thus intervene immediately in a crash. The danger of a so-called slack rope is not given, instead the fall height is always kept as small as possible. Furthermore is achieved by the tightening means that the user is optimally secured in any working position against the crash, since any change in posture or movement through the tightening agent mitvollzogen and tightening particular the safety belt is ensured. The forces occurring during a fall are thus kept as low as possible, so that the risk of injury to the user can be further reduced.

It is also possible that the sliding guide means is a rail means and / or comprises and / or that two parallel guide means are provided, wherein the coupling means is arranged on both guide means. The rail means may for example be a rail. Preferably, the rail means may be made of lightweight material, in particular may be aluminum profiles or aluminum rails. This results z. B. the advantage that the crane boom is loaded only with a comparatively very small additional weight.

Advantageously, it is conceivable that the securing device comprises a stepping means, wherein in each case at least one guide means is arranged on both longitudinal sides of the tread means. The tread means may be, for example, a step tread arranged on the tread side.

It is possible for the securing belt means to be arranged with two articulation points on the at least one guiding means and with a point of articulation on the protective equipment or an element of the protective equipment, so that the securing belt means is preferably stretched or clamped between the at least three articulation points in a triangular or Y-shaped manner ,

Furthermore, it can be provided that the protective equipment comprises a vortex, by means of which a direction change is feasible, in particular without putting on the protective equipment and wherein preferably the vortex is at least part of the articulation point for the securing belt means. The vortex advantageously allows a free choice of running direction, since the user without his protective gear z. B. from a first to a second security system must be able to rotate. The vortex may advantageously rotate relative to the protective equipment.

Moreover, the present invention relates to a boom for a crane with the features of claim 8. Thereafter, it is provided that a boom for a crane is provided with at least one securing device according to one of the preceding claims. As a result, it is advantageously possible to create a safely accessible boom for a crane, which offers user-friendly protection against crashes.

The advantage is that the security system can be easily retrofitted on a boom.

It can be provided that the boom has at least one boom end element and at least one boom center element, each having at least one rail means, wherein in the assembled state of boom end element and boom center element, the rail means are connected to a common guide rail for the at least one guide means and preferably wherein the boom end element a rail end means, by means of which a leaving of the rail means by the guide means can be prevented.

With additional end stops on the sliding guide means, it is possible to securely move on each individual boom part.

Furthermore, the present invention relates to a construction machine with the features of claim 10. Thereafter, it is provided that a construction machine, in particular a crane, with at least one securing device according to one of claims 1 to 7 and / or with at least one boom according to claim 8 or 9 is provided.

Further details and advantages of the invention will now be explained in more detail below with reference to an embodiment shown in the drawing.

Figur 1:

eine Draufsicht auf einen Ausleger eines Kranes:

Figur 2:

eine schematische Frontansicht einer ersten Ausführungsform;

Figur 3:

eine Detailansicht des in Figur 2 gezeigten Details A;

Figur 4:

eine Draufsicht auf Schiene und Gleiter;

Figur 5:

eine schematische Frontansicht einer zweiten Ausführungsform;

Figur 6:

eine perspektivische Ansicht eines Endauslegerelements; und

Figur 7:

eine Detailansicht des in Figur 6 gezeigten Details B.

Show it:

FIG. 1:

a top view of a boom of a crane:

FIG. 2:

a schematic front view of a first embodiment;

FIG. 3:

a detailed view of the in FIG. 2 shown details A;

FIG. 4:

a plan view of rail and slider;

FIG. 5:

a schematic front view of a second embodiment;

FIG. 6:

a perspective view of a Endauslegerelements; and

FIG. 7:

a detailed view of the in FIG. 6 details shown B.

FIG. 1 shows in plan view a boom 10 of a crane not otherwise shown. The boom 10 is composed of a plurality of boom elements 12, 14, 16 and 18, wherein two central boom elements 14 and 16 and two end-mounted boom elements 12 and 18 are provided. The boom elements 12, 14, 16, 18 can be connected to each other, for example by means of releasable bolt connections. The Auslegerendelement 12 is also the boom element 12, which z. B. is attached to the uppercarriage of the crane.

FIG. 2 shows a schematic front view of a first embodiment of the security system 100. This is the user 20 z. B. on the boom element 14, which by means of a running step 30 as Trittmittels 30th is walkable. On the longitudinal sides of the tread 30 each rails 110 of the security system 100 are arranged, on which sliders 120 are slidably mounted.

Like this in FIG. 3 Referring to detail A, the slider 120 surrounds the rail 110 to prevent slipping of the slider 120 and rail 110.

At the top of the slider 120, a mounting bracket 125 is attached to which the safety belt 130 attaches. The safety belt 130 has a belt tensioner 140, which is respectively disposed at the ends of the safety belt 130, which are attached to the mounting bracket 125, so that the safety belt 130 can always be kept taut.

By the belt tensioner 140, the safety belt 130 is automatically adjusted to the respective body size or posture of the user. This advantageously prevents the risk of a so-called slack rope, that is to say an untensioned or sagging safety rope or safety belt, which in the event of a fall would result in the fall height being increased at least to the extent that the safety rope or safety belt is taut.

The safety belt 130 is used in FIG. 2 embodiment shown hinged directly to the backup equipment 200 of the user 20. For this purpose, the security equipment 200 on a vortex 210, which allows a free choice of the direction on the tread means 30. The vortex 210 may rotate in a bearing relative to the backup equipment 200, so that it is not necessary to hang it when changing the direction of travel.

Thus, a securing belt triangle which is advantageous with regard to the force flow in the securing belt 130 is formed between the three articulation points of the securing belt 130 on the right and left slider 120 and the vertebra 210.

The backup equipment 200 is preferably implemented as a close-fitting safety corset 200 or as a safety vest 200, which in any case is designed to support the weight of the user 20 in the event of a fall.

FIG. 4 shows a plan view of the underside of rail 110 and slider 120. The slider 120 is diamond-shaped and has on each longitudinal side in each case three rollers 122, with which the slider 120 rolls on the rail 110.

FIG. 5 shows a further embodiment of the security system 100 in a schematic front view. This embodiment corresponds in important features of in FIG. 2 shown embodiment, which are marked accordingly with the same reference numerals.

Deviating from the first in FIG. 2 shown embodiment is provided here, to secure the securing strap 130 'directly to the sliders 120 and centrally provide a belt tensioner 140'. From this belt tensioner 140 'of a further connecting belt 142', which is articulated to the vertebra 210 extends.

It forms at the in FIG. 5 a likewise advantageous with regard to the power flow in the safety belt 130 Sicherungsgurtprofil, namely a Y-profile between the four articulation points of the safety belt 130 'on the right and left slider 120, the belt tensioner 140' and the vertebra 210 from.

FIG. 6 shows in perspective view the boom end 12, to which rail end pieces 115 are provided, each having a station, not shown. At the Schienenendstücken 115, the slider 120 can be threaded and it can be provided that a retraction of the slider 120 is prevented from the Schienenendstück 115 by means of a fuse, not shown. At the rail end pieces 115 encounter the Rails 110 of the next boom member 14 at. When not in use, the sliders 120 can be locked in the stations by means of a locking means.

In principle, it can be provided that the rails 110 of the respective boom part 12, 14, 16, 18 abut one another, so that a continuous rail 110 is formed over all the boom elements. Thus, the entire length of the boom 10 can be committed without a transfer of the security equipment z. B. to another rail or other safety rope is necessary.

FIG. 7 concerns the detail of detail B, which is in FIG. 6 is marked accordingly. The rail end pieces 115 sit here on a box-shaped support 117. In principle, it can be provided that each jib element 12, 14, 16, 18 has such a support 117 in order to support the rail 110.

As a rail material preferably lightweight material can be used, in particular it can be provided that the rails 110 are aluminum rails 110.

Claims (9)

Securing device, in particular for fall protection of persons on inspection of a crane jib, with at least one indirectly and / or immediately trittebenenseitig arranged Gleitführungsmittel and at least one guide means slidably guided and guided in the and / or by the Gleitführungsmittel, wherein on the guide means Fastening means can be fastened or fastened, by means of which at least one protective equipment can be attached or attached. Securing device according to claim 1, characterized in that the attachment means comprises at least one tightening device, by means of which the protective equipment can be attached in a taut manner, and / or that the attachment means has at least one securing belt means, which is preferably adjustable in length. Securing device according to claim 1 or 2, characterized in that the sliding guide means is a rail means and / or comprises and / or that two parallel guide means are provided, wherein the coupling means is arranged on both guide means. Safety device according to one of the preceding claims, characterized in that the securing device comprises a stepping means, wherein in each case at least one guide means is arranged on both longitudinal sides of the tread means. Securing device according to one of claims 2 to 4, characterized in that the securing belt means is arranged with two points of articulation on the at least one guide means and with a point of articulation on the protective equipment or an element of the protective equipment, so that the securing belt means are preferably triangular between the at least three articulation points or Y-clamped or clamped. Securing device according to one of the preceding claims, characterized in that the protective equipment comprises a vortex, by means of which a direction change is feasible, in particular without putting on the protective equipment and wherein preferably the vortex is at least part of the articulation point for the Sicherungsgurtmittel. Boom for a crane with at least one safety device according to one of the preceding claims. A boom according to claim 8, characterized in that the boom comprises at least one boom end element and at least one boom center element, each having at least one rail means, wherein in the assembled state of boom end element and boom center element, the rail means to a common Guide rail for the at least one guide means are connected and wherein preferably the Auslegerendelement has a rail end means by means of which a leaving of the rail means by the guide means can be prevented. Construction machine, in particular crane, with at least one safety device according to one of claims 1 to 7 and / or with at least one boom according to figure 8 or 9.

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