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Device for determining the replacement state of wear of a rope during use in lifting gear

A lifting device and detection device technology, applied in the direction of measuring devices, hoisting devices, safety devices, etc., can solve the problem of no fixed connection

Active Publication Date: 2017-02-22
LIEBHERR COMPONENTS BIBERACH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although several rope parameters can be evaluated, the problem is that the abandoned state is not actually always given by the same change of the rope parameter, or there is no fixed link between individual changes of the rope parameter and the abandoned state

Method used

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  • Device for determining the replacement state of wear of a rope during use in lifting gear
  • Device for determining the replacement state of wear of a rope during use in lifting gear
  • Device for determining the replacement state of wear of a rope during use in lifting gear

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Experimental program
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Embodiment Construction

[0035] According to one embodiment of the present invention, figure 1 By way of example of a lifting device, the crane is shown in the form of a top slewing tower crane 20 whose tower 21 is mounted on a carriage or a fixed foundation. In a manner known per se, a boom 23 is pivotably hinged to the tower 21 about a horizontal axis and is supported by pulling ropes 24 . The pull rope 24 is variable in its length by the pull rope winch 25, so that the pitch angle of the boom 23 is variable. For this purpose, a stay rope 26 is inserted onto said stay rope winch 25 . For example, the pull rope 26 or pull rope 24 is guided at a hinge point on the boom 23 near the tip of the boom 23 by means of guide pulleys 27 on the shown pull strut 50 or spire.

[0036]Optionally, the tower crane 20 can of course also be equipped with a trolley boom. On the boom 23 the trolley can be mounted movably, eg by means of a trolley rope guided by a guide pulley at the tip of the boom.

[0037] In addi...

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PUM

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Abstract

The invention relates in general to lifting gear such as cranes, which use ropes such as high-strength fibre ropes. The invention relates in particular to a device for determining the replacement state of wear of a rope of this type during use in lifting gear of this type, said device comprising a detection system for detecting at least one rope utilization characteristic that influences the replacement state of wear and an evaluation unit for evaluating the rope utilization characteristic and for providing a replacement signal according to the evaluation of the rope utilization characteristic. According to the invention, the detection device has at least one detection means for detecting environmental influences on the rope, which influences can be evaluated by the evaluation device in order to identify the replacement state of wear.

Description

technical field [0001] The present invention generally relates to hoisting devices, such as cranes, using ropes, such as high strength fiber ropes. The invention relates in particular to a device for determining the waste state of a rope used in such a lifting device, said device comprising detection means for detecting at least one rope utilization parameter influencing the waste state and for evaluating the rope use parameter and according to Means for evaluating rope utilization parameters to provide a rejection signal. Background technique [0002] There have been recent attempts to use high-strength fiber ropes in cranes made of synthetic fibers such as aramid fibers (HMPA), aramid / carbon fiber blends, high-modulus polyethylene fibers (HMPE) or polyester fibers. (p-phenylene-2,6-benzobisoxazole) fibers (PBO) instead of the proven steel cords that have been used for many years. The advantage of these high strength fiber ropes is their low weight. With the same rope di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/54B66C13/16B66C15/00
CPCB66C13/16B66C15/00B66D1/54B66C23/16B66C23/42B66C23/52G01N17/008
Inventor 拉卡·穆彭德霍斯特·泽尔扎
Owner LIEBHERR COMPONENTS BIBERACH GMBH