Balance weight of crane, crane and moment balance method of crane
A counterweight and crane technology, applied in the field of moment balance, to achieve easy and convenient loading and unloading, and reduce weight
Active Publication Date: 2014-12-03
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
[0008] The purpose of the present invention is to provide a balance weight of a crane, a crane and a moment balance method of the crane, which can solve the problem of moment balance of the crane without changing the weight of the balance weight and changing the balance arm
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[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0037]The counterweight of the crane of the present invention includes a variable counterweight and a rotary drive device. The variable balance weight is arranged on the balance arm of the crane and is rotatably arranged relative to the balance arm, and the force arm of the balance weight relative to the tower body of the crane changes with the rotation of the variable balance weight. The variable balance weight includes two sets of variable balance weight assemblies 110 respectively located on both sides of the vertical center plane of the balance arm 30 , and the two groups of variable balance weight assemblies 110 respectively rotate around the vertical axis on their respective sides. The r...
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The invention provides a balance weight of a crane, the crane and a moment balance method of the crane. The balance weight comprises a variable balance weight and a rotation drive device, wherein the variable balance weight is arranged on a balance arm of the crane and is rotatablely arranged relative to the balance arm, the balance weight is changed along with rotation of the variable balance weight relative to a force arm of a tower body of the crane, the variable balance weight comprises two groups of variable balance weight components respectively positioned on both sides of a plane of a vertical center of the balance arm, and the two groups of variable balance weight components are respectively rotated around a vertical axis on the side per se; and the rotation drive device is connected with the variable balance weight to drive the two groups of variable balance weight components to respectively rotate relative to the balance arm. By utilizing the balance weight, the crane and the moment balance method, the problem of moment balance of the crane can be solved without changing weight of the balance weight and replacing the balance arm.
Description
technical field [0001] The invention relates to the field of hoisting machinery, in particular to a balance weight of a crane, a crane and a moment balancing method for the crane. Background technique [0002] In the prior art, the installation of the balance weight of the tower crane is generally fixed at the tail end of the balance arm. When designing, it is generally followed that the forward bending moment of the tower body when the tower crane is at the maximum lifting weight is close to the non-working The backward bending moment on the tower body in the state. When it is necessary to use the jib with short jib length, the balance weight must be adjusted. When adjusting the balance moment of tower cranes, especially flat-arm tower cranes, it is generally realized by adjusting the weight of the balance weight or replacing the balance arm. [0003] Such as figure 1 As shown, the tower crane in the prior art includes a tower body 50 and a jib 40 and a balance arm 30 in...
Claims
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IPC IPC(8): B66C23/76B66C13/16
Inventor 文奇
Owner ZOOMLION HEAVY IND CO LTD