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Method for matching balanced system of crane in type of arm support

A technology of balance system and matching method, which is applied to cranes and other directions, can solve problems such as overload fracture, crane steel structure damage, and poor force on the body, so as to reduce the amount of use, reduce the weight of the steel structure, and improve the force of the body.

Inactive Publication Date: 2007-10-10
SHANDONG FORYOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional hoisting machinery uses a fixed balance weight or its own weight as the balance weight to meet the stability requirements of the whole machine. Common jib cranes install a certain weight of balance weight at the end of the balance arm. It is very difficult to replace the balance weight. The whole machine leans backward when it is in the state, and the whole machine leans forward when it is fully loaded. The body often bears a large bending moment, which makes the body stress very poor. In order to meet the balance requirements of the whole machine, a large number of reinforced concrete foundations are often required as the tower crane. At the same time, under severe weather conditions such as strong winds, it is very likely that the balance weight will fall off or the crane will collapse due to excessive wind resistance, which will bring huge safety hazards to the construction.
[0003] At the same time, for the lifting capacity of the crane, its size depends on the strength of the steel structure of the crane itself and the lifting capacity of the mechanism, but due to the strength and stability of the steel structure of the crane itself, it is determined that it cannot be added to its balance arm. Excessive fixed balance weight, otherwise it will cause damage to the steel structure of the crane, and an event of overload fracture will occur, thus limiting the lifting capacity of the entire lifting machine, and it is impossible to lift items that exceed the limit
In installation occasions such as large buildings, electric construction equipment, and wind turbines, it is often necessary to lift super-heavy components. If conventional jib cranes are used to meet the above work requirements, the lifting capacity of the whole machine needs to be greatly improved, resulting in high cost

Method used

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  • Method for matching balanced system of crane in type of arm support
  • Method for matching balanced system of crane in type of arm support

Examples

Experimental program
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Effect test

Embodiment 1

[0017] The method of the present invention is to install a pulley on the counterweight arm, and use the counterweight sling connected with the power mechanism to bypass the pulley and directly connect with the counterweight downwards. The specific structure of its equipment is that a pulley is fixedly installed somewhere on the counterweight arm, and the counterweight sling connected with the winch installed on the counterweight arm or the tower body goes around the pulley and directly connects the counterweight downward. Such a structure enables the counterweight to be placed on the ground or a working platform, and the weight and range of the counterweight can be properly adjusted according to the actual situation such as the lifting weight to ensure the balance of the equipment.

Embodiment 2

[0019] The method of the present invention is to install a pulley on the counterweight arm, bypass the pulley and connect a suspension hook downward with the counterweight sling connected with the power mechanism, and the suspension hook is used for hooking the counterweight. The specific structure of the equipment is to fixedly install a pulley somewhere on the counterweight arm, and the counterweight sling connected to the winch installed on the counterweight arm or the tower body goes around the pulley and connects downward to the hook, and the hook passes through the A rope or hook or loop on the weight is attached to the counterweight. Such a structure enables the counterweight to be placed on the ground or a working platform, and the weight and range of the counterweight can be properly adjusted according to the actual situation such as the lifting weight to ensure the balance of the equipment.

Embodiment 3

[0021] The method of the present invention is to install a pulley block on the counterweight arm, the pulley block includes two sets of pulleys on the left and right, and the counterweight sling connected to the power mechanism bypasses the pulleys on the same side of the pulley block, and then goes around the suspension hook downwards. The upper pulley, and then go up to the pulley on the other side of the pulley block on the counterweight arm, and finally fix it on the tower body. The hook is used to hang the counterweight.

[0022] The specific structure of the equipment is to fixedly install the pulley block somewhere on the counterweight arm. The pulley block is composed of two pulleys on the left and right. The counterweight sling connected to the winch installed on the counterweight arm or the tower body goes around the same side of the pulley block. After the two pulleys of the pulley block, go down around the pulley on the hook, then up around the two pulleys on the o...

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Abstract

A balance system matching method for the cantilever-type crane features that the counterweight is linked to the cantilever via a part linked with power unit and the pulleys on cantilever. At least part of said part linked with power unit is the hanging cable matched with said pulley.

Description

technical field [0001] The invention relates to a method for matching a balance system of a jib type crane and a crane for realizing the method. Background technique [0002] Conventional hoisting machinery uses a fixed balance weight or its own weight as the balance weight to meet the stability requirements of the whole machine. Common jib cranes install a certain weight of balance weight at the end of the balance arm. It is very difficult to replace the balance weight. The whole machine leans backward when it is in the state, and the whole machine leans forward when it is fully loaded. The body often bears a large bending moment, which makes the body stress very poor. In order to meet the balance requirements of the whole machine, a large number of reinforced concrete foundations are often required as the tower crane. At the same time, under severe weather conditions such as strong winds, it is very likely that the balance weight will fall off or the crane will collapse du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/76B66C23/16
Inventor 王积永
Owner SHANDONG FORYOU