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Pulley block combining structure, lifting hook and lifting device

A combined structure and pulley block technology, applied in portable lifting devices, hoisting devices, etc., can solve problems such as damage to the hook, tilting of the hook, and danger

Active Publication Date: 2016-04-20
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the force of each pulley block is the same, the hook will tilt due to unbalanced force, which will damage the hook and cause danger.
Therefore the suspension hook in the prior art can only realize the balance of a specific number of pulley blocks

Method used

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  • Pulley block combining structure, lifting hook and lifting device
  • Pulley block combining structure, lifting hook and lifting device
  • Pulley block combining structure, lifting hook and lifting device

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of descriptio...

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Abstract

The invention discloses a pulley block combining structure, a lifting hook and a lifting device. The pulley block combining structure comprises a connecting balance beam, a first pulley block assembly and a second pulley block assembly. The number of pulley blocks of the first pulley block assembly and the number of pulley blocks of the second pulley block assembly are different; the connecting balance beam comprises a plurality of connecting parts, and the multiple connecting parts include the first connecting part, the second connecting part and the third connecting part; in the horizontal direction, the first connecting part and the second connecting part are arranged on the two sides of the third connecting part respectively, the first pulley block assembly is connected with the first connecting part, the second pulley block assembly is connected with the second connecting part, and the horizontal distance from the first connecting part to the third connecting part is not equal to the horizontal distance from the second connecting part to the third connecting part so that the moment borne by the first connecting part relative to the third connecting part and the moment borne by the second connecting part relative to the third connecting part can be equal. By means of the pulley block combining structure, as the connecting balance beam is arranged, the balance of more pulley blocks with different numbers can be achieved through the lifting hook.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a combined structure of a pulley block, a hook and a lifting device. Background technique [0002] In order to meet the lifting requirements of domestic petroleum, petrochemical, wind power, steel and other large-scale engineering projects, the lifting capacity of lifting equipment needs to be continuously increased. The continuous improvement of the lifting capacity will inevitably require multiple hoisting mechanisms to provide multiple hoisting ropes to meet the requirements, so the hook needs to include more pulley blocks. [0003] figure 1 A schematic diagram showing the balance of the pulley block of the hook in the prior art. The suspension hook in the prior art includes a symmetrically arranged pulley block combined structure. The pulley blocks in the pulley block combination structure should also be arranged symmetrically, that is to say, the number of pulley bloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D3/08
CPCB66D3/08B66D2700/028
Inventor 王亚生李云青章琢肖猛周玉龙
Owner XCMG CONSTR MACHINERY
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