Movable arm variation-amplitude column crane counterweight automatic synchronization travel mechanism

A technology of tower cranes and mobile mechanisms, applied in cranes and other directions, can solve the problems of inconvenient installation and maintenance, large space occupation of the upper machine platform of the balance arm, and complicated structure, and achieve the effects of convenient installation and maintenance, simple structure, and clear force

Inactive Publication Date: 2009-02-04
CABR CONSTR MACHINERY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of counterweight moving mechanism has the problems of complex structure, inconvenient

Method used

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  • Movable arm variation-amplitude column crane counterweight automatic synchronization travel mechanism
  • Movable arm variation-amplitude column crane counterweight automatic synchronization travel mechanism

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Examples see figure 1 shown, see figure 2 , referring to Fig. 3, the automatic synchronous movement mechanism of the counterweight of the boom tower crane is connected between the balance arm 4 and the boom 6, and the counterweight is fixed at the hinge point of the moving bar and the swing bar. The mechanism has the following main components:

[0017] Swing rod 2: one end is hinged on the balance arm 4, and the other end is hinged on the moving rod 3.

[0018] Moving rod 3: one end is hinged with the swing rod, and the other end is hinged with the jib transition connecting rod 5.

[0019] Transition connecting rod 5: it is actually a part of the jib. Connect the boom 6 and the moving rod 3. Through it, the mechanism moves with the swing of the jib 6 . The transition connecting rod 5 can also be a frame structure.

[0020] The swing bar 2, the moving bar 3 and the balance arm 4 form a parallel four-bar linkage mechanism. Wherein the balance arm 4 is a fixed rod,...

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PUM

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Abstract

The invention relates to a counterweight automatic synchronous mobile mechanism of an amplitude boom tower crane, which is connected with a balancing arm; the undersurface of the front end of the balancing arm is articulated with the top of the tower; the upside of the front end is articulated with an arm frame; a parallel four-bar linkage is composed of a rocking bracket, a shipper rod and a transitional joint lever by means of the balancing arm through the mobile mechanism; wherein, the back end of the rocking bracket is articulated with the back end of the shipper rod; the counterweight is positioned at the central position of the articulating point; the front end of the rocking bracket is hinged with the hinder part of the balancing arm; the front end of the shipper rod is articulated with the rear end of the transitional joint lever; the front end of the transitional joint lever is fixed and connected with the arm frame; the lower end of a supporting rod at the center of the transitional joint lever is fixed and connected with the transitional joint lever; the upper end of the supporting rod is fixed and connected with the arm frame at the trail of the arm frame. In the process of the amplitude of the arm, the counterweight automatic synchronous mobile mechanism of the amplitude boom tower crane has the advantages that the counterweight is moved synchronously, thus leading a suitable automatic adjustment for a balancing moment as the pitching of the arm frame and effectively solving the balancing problem of a large amplitude boom tower crane.

Description

technical field [0001] The invention relates to a counterweight moving mechanism for a tower crane. Background technique [0002] The jib luffing tower crane realizes the amplitude change through the pitching of the jib. During the luffing process, the center of gravity of the jib also changes accordingly. It is necessary to use a large-tonnage counterweight to achieve the balance of the tower body. Appropriate balance torque is of great significance to meet the safety of the tower body under different working conditions, reduce the material consumption of the tower body, and reduce the cost of the whole machine. [0003] The existing counterweight moving mechanism, such as patents CN1837011A and CN2793032Y, is to install the counterweight directly on the track of the balance arm, and the counterweight travel device drives the counterweight to move on the balance arm. The control device is used to control the walking of the counterweight. This type of counterweight moving ...

Claims

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Application Information

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IPC IPC(8): B66C23/76B66C23/82B66C23/26
Inventor 罗文龙姚金柯王涛刘贺明
Owner CABR CONSTR MACHINERY TECH
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