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Measuring device for load measurement in a hoist

A technology for measuring devices and machine control devices, applied in the directions of transportation and packaging, load hanging elements, etc., can solve problems such as

Active Publication Date: 2020-10-30
LIEBHERR WERK EHINGEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A big problem with existing solutions according to the prior art is that in a hoisting rope system with multiple stays, the accuracy of the load measurement may depend on the specific position of the measuring device at the hoisting rope

Method used

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  • Measuring device for load measurement in a hoist
  • Measuring device for load measurement in a hoist
  • Measuring device for load measurement in a hoist

Examples

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Embodiment Construction

[0041] from figure 2 The measuring device 100 according to the invention can be seen in detail in . It comprises a diverting pulley 101 adapted to deflect the hoisting rope 4 of the crane instead of a pulley head 102 attached to the crane according to the invention ( image 3 ) in the diverting pulley. The measuring device can thus be used at any position in the guyline.

[0042] For example, in Figure 4 The schematic rope range of the hoisting rope 4 with the installed measuring device 100 can be easily recognized in the diagram. Here the hoisting ropes 4 run from the hoist winch to the jib end where they are led over the jib head top sheave 2 to the sheave head 102 . Between the pulley head 102 and the hook block there are several stays of the hoisting rope 4 and four corresponding deflection pulleys are provided on the pulley head 102 and in the region of the hook block. in the shown Figure 4 In the exemplary embodiment of the pulley head 102 , the penultimate dive...

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Abstract

The present invention relates to a measuring device (100) for load sensing in a lifting-cable-based hoist, in particular a crane, having at least one pulley (101) for deflecting the lifting cable (4)of the hoist, a fastening means in the form of a cable loop (104), at the end of which the pulley is mounted so as to be rotatable about its roller axis, and at least one measuring element (105) for sensing a force applied to the pulley.

Description

technical field [0001] The invention relates to a measuring device for load detection in a hoisting device based on hoisting cables. Background technique [0002] Due to the increasing degree of automation in lifting installations, especially in cranes with increasingly complex crane controls, the precise measurement of the load is becoming more and more important. A more accurate measurement method can increase the payload because the allowable payload range can be better utilized. [0003] Until now, the load weighing of lattice cranes has been carried out by measuring the pulling force with tension load cells. These forces are then used in the crane control to calculate the load, taking into account the geometry of the boom. When using a telescopic crane, the hydraulic pressure in the luffing linkage is sensed and the load is calculated using the crane geometry. [0004] There are also systems for measuring the rope tension of the last line of the hoisting rope, eg by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/16
CPCB66C13/16B66C13/085B66C13/46
Inventor J·韦斯泰德S·温德贝O·鲁斯U·福乐美
Owner LIEBHERR WERK EHINGEN
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