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Method and device for reducing over-high deflection in amplitude changing process of caterpillar-band crane arm support

A technology of crawler cranes and cranes, which is applied in the direction of cranes, etc., to achieve the effect of reducing the deflection of the boom

Inactive Publication Date: 2010-10-13
ZHEJIANG SANY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method and device for reducing the excessive deflection of the crawler crane jib during the luffing process, which can reduce the problem of excessive deflection when the jib is raised, and can not generate reverse tension after the jib is raised , will not damage the jib

Method used

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  • Method and device for reducing over-high deflection in amplitude changing process of caterpillar-band crane arm support
  • Method and device for reducing over-high deflection in amplitude changing process of caterpillar-band crane arm support
  • Method and device for reducing over-high deflection in amplitude changing process of caterpillar-band crane arm support

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Embodiment Construction

[0030] The technical solution of the present invention will be described in detail below with reference to the drawings.

[0031] See Figure 1 to Figure 7 In the method of reducing excessive deflection during the luffing process of the crawler crane boom of the present invention, a wire rope 1 is set at the position where the boom 4 of the crane 8 has the largest deflection, and the wire rope 1 is connected to a retractable waist rope device 2, and the waist One supporting point of the rope device 2 is located on the crane pull plate 5 (or rope or pipe), the other end is connected to the boom 4, and the other end of the wire rope 1 is connected to a hoist 3, which is set on the crawler crane 8 Host.

[0032] The waist rope device 2 is a suspension type, and includes an upper pulley group 21, which includes an upper fixing bracket 211, an upper pulley 212 arranged on the upper fixing bracket 211 through a supporting arm 213; two of the upper fixing bracket 211 The end is connecte...

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Abstract

The invention relates to a method and a device thereof for reducing over-high deflection in amplitude changing process of caterpillar-band crane arm support. A waist-rope device is arranged on the arbitrary point in the + / -3-meter distance of the maximum deflection of a crane arm support and can be in an extendible structure, one support point of the waist-rope device is on a pulling plate or a pulling rope or a pulling tube of a crane, and the other end is connected with the arm support. The waist-rope device uses the cooperative work of two groups of pulley sets and a steel wire to control the collection and the release of the steel wire under the traction of a winding engine and adjust the distance between the two pulley sets so as to adjust the distance between the crane arm support and the pulling plate or the pulling rope or the pulling tube and control the deflection in the amplitude changing process of the arm support. The invention changes the length of the waist rope by collecting and releasing the steel wire, thus, the problem of the over-high deflection when the arm support rises can be solved, and the difficult problem of the reverse action force on the arm support after the arm rises can also be solved.

Description

Technical field [0001] The invention relates to a crawler crane, in particular to a method and a device for reducing excessive deflection in the boom luffing process of the crawler crane. Background technique [0002] Currently, crawler crane waist rope devices are used at home and abroad, such as the "Crane boom flexible follow-up waist rope device" disclosed in Chinese Patent Publication No. CN01217725. This device has a waist rope, and one end of the waist rope is connected to the middle of the boom with a pin. Position, the other end is connected to the luffing pulley block, and the luffing pulley block is connected to the other end of the boom through a luffing cable. [0003] During the boom luffing process of the crane, the waist rope keeps the boom under tension from beginning to end, which reduces the force of the boom, reduces the deflection range of the boom, and overcomes the lifting of the boom. The waist rope only acts as a tensioning weakness in an instant. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/62
Inventor 蔡淳崔铁军
Owner ZHEJIANG SANY EQUIP
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