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Tower crane and adjusting method for trimming moment of tower crane

A technology of balance moment and adjustment method, which is applied to cranes and other directions, can solve the problems of construction safety hazards, reduce the service life of the tower body, and the bending moments on both sides of the tower crane can not always maintain balance, so as to improve the stress state and reduce construction safety. Hidden dangers, the effect of prolonging the service life

Active Publication Date: 2013-10-16
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual work, due to the difference in hoisting weight and hoisting position, the bending moment of the boom will also change at any time, which causes the bending moments on both sides of the tower crane to not always maintain balance, but will make the tower body in a position of alternating stress In the state, long-term stress will have adverse effects on the tower body, reduce the service life of the tower body, and bring hidden dangers to construction safety

Method used

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  • Tower crane and adjusting method for trimming moment of tower crane
  • Tower crane and adjusting method for trimming moment of tower crane
  • Tower crane and adjusting method for trimming moment of tower crane

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Embodiment Construction

[0030] It should be noted that the features in the various embodiments of the present invention may be combined with each other in the absence of explicit limitation or conflict. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] figure 1 It is a structural schematic diagram of the tower crane of the present invention, as figure 1 As shown, the tower crane includes a tower body 10, a rotating tower column 11 located on the upper part of the tower body 10, a lifting arm 20, a balance arm 30, a counterweight 40, a luffing trolley 50, and a crane 60, among which the crane 60 is used for For hoisting the weight, the luffing trolley 50 is used to change the hoisting position of the weight. Moreover, the hoisting mechanism 21 is arranged on the balance arm, and the hoisting wire rope 22 is drawn out from the hoisting mechanism 21 , passes through the luffing trolley 50 and the crane 60 in sequence, and finally...

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Abstract

The invention relates to a tower crane and an adjusting method for trimming moment of the tower crane. The tower crane comprises a tower body, a rotary tower column, a crane boom, a balance arm, and a balance weight arranged on the balance arm; the adjusting method comprises the following steps: acquiring load moment of the tower crane; determining target trimming moment of the tower crane according to the load moment; determining a target position of the balance weight on the balance arm according to the target trimming moment; moving the balance weight to the target position. According to the technical scheme provided by the invention, the target trimming moment required by the tower crane is determined through acquiring load moment of the tower crane, then the balance weight is adjusted to a corresponding target position, compared with the prior art, the trimming moment of the tower crane can be adjusted timely, so that a stress state of the tower crane is improved, the service life of the tower crane is prolonged, and potential safety hazards in construction are reduced.

Description

technical field [0001] The invention relates to the field of tower cranes, in particular to a tower crane and a method for adjusting the balance moment of the tower crane. Background technique [0002] Tower cranes (referred to as tower cranes, the same below) are widely used in hoisting operations in construction, including tower body, tower top, lifting arm, balance arm and counterweight, among which the lifting arm and balance arm are respectively It is hinged symmetrically with both sides of the upper part of the tower body, and a counterweight is fixed at the far end of the balance arm, and the bending moment generated by the counterweight is used to balance the bending moment of the boom when it is working, so that the whole tower crane is in a balanced state and the tower body is improved. stress situation. [0003] Now, because the position of the counterweight on the balance arm is fixed, the bending moment provided by the balance arm also remains constant. In act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/76
Inventor 张鹏李建华曾祥斌周海建俞立虎
Owner ZOOMLION HEAVY IND CO LTD
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