Tower crane with luffing boom and mounting method for variable-amplitude pull rod of tower crane

A technology of a boom tower crane and an installation method, which is applied to cranes and other directions, can solve problems such as difficulty in coordination between luffing mechanisms and hoisting mechanisms, twisting of luffing ropes, etc., and achieve smooth traction process, simplified structure, and reduced production costs Effect

Active Publication Date: 2013-03-27
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a method for installing the luffing pull rod of the luffing jib tower crane and luffing jib tower crane to solve the problem of twisting of the luffing rope in the prior art when traction rope is used to pull the luffing pull rod moving pulley block
Further, solve the problem of difficult coordination between the luffing mechanism and the hoisting mechanism

Method used

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  • Tower crane with luffing boom and mounting method for variable-amplitude pull rod of tower crane
  • Tower crane with luffing boom and mounting method for variable-amplitude pull rod of tower crane
  • Tower crane with luffing boom and mounting method for variable-amplitude pull rod of tower crane

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Embodiment Construction

[0033] 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. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] Such as Figure 4 to Figure 7 As shown, the luffing jib tower crane of the embodiment of the present invention includes an A-frame 7, an arm frame 10 with one end hinged to the A-frame 7, an A-frame fixed pulley block 1 arranged at the top of the A-frame 7, and a luffing pull rod movable pulley block. 2. Luffing rope 11, luffing pull rod 5, installation rope 6, lifting drum 9, at least two traction ropes 3, at least two fixed pulleys 4 corresponding to at least two traction ropes 3 one-to-one, and the first auxiliary Roll 13.

[0035] The luffing rope 11 is wound on the moving pulley block 2 of the luffing rod and the fixed pulley block 1 of the A-frame, one end of the luffing rope 11 ...

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Abstract

The invention provides a tower crane with a luffing boom and a mounting method for a variable-amplitude pull rod of the tower crane. The tower crane with a luffing boom comprises an A-shaped frame, a boom frame, an A-shaped frame fixed pulley block, a variable-amplitude pull rod movable pulley block, a variable-amplitude drum and a variable-amplitude rope, wherein one end of the boom frame is articulated with the A-shaped frame, the A-shaped frame fixed pulley block is arranged at the top end of the A-shaped frame; the variable-amplitude rope is threaded and wound on the variable-amplitude pull rod movable pulley block and the A-shaped frame fixed pulley block, one end of the variable-amplitude rope is wound to the variable-amplitude drum and the other end of the variable-amplitude rope is fixed at the end fixing point of the variable-amplitude rope on the A-shaped frame; and the tower crane with the luffing boom further comprises at least two traction ropes, and each of the traction ropes is connected at intervals on a pulley frame of the variable-amplitude pull rod movable pulley block and connected with a traction mechanism. Based on the technical scheme provided by the invention, the balance of the movable pulley block during traction is guaranteed by at least two traction ropes to prevent the twisting of the mounted variable-amplitude rope caused by the inclination of the movable pulley block, so that the traction process is smooth and safe.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a method for installing a boom tower crane and a luffing tie rod of the boom tower crane. Background technique [0002] There are two installation methods for the luffing rod of the luffing jib tower crane in the prior art. The first installation method is as follows: figure 1 and figure 2 As shown, 1' is the fixed pulley block of the A frame, 2' is the luffing rope, 3' is the moving pulley block of the luffing rod, 5' is the luffing rod, 6' is the installation rope, 7' is the A frame, 8' ' is the luffing drum, 9' is the hoisting drum, 10' is the jib, and 11' is the fixed point at the end of the luffing rope. When the boom 10' is installed, the luffing rod 5' and the luffing pulley block 3' are placed on the boom 10', so that the luffing rod moving pulley block 3' is connected with the pull rod 5', and the lower end of the boom 10' is connected to the The A-frame 7' is hinge...

Claims

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Application Information

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IPC IPC(8): B66C23/62B66C23/82
Inventor 朱守寨
Owner ZOOMLION HEAVY IND CO LTD
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