Method and device for improving lateral load capacity of arm support, and crane

A lateral load and jib technology, applied in cranes, load hanging components, transportation and packaging, etc., can solve the contradiction between the lifting capacity of the truss arm and the section limit, limit the section of the truss arm, etc., and improve the lateral stability performance, improve load capacity, and improve the effect of stress state
CN102701086AInactive Publication Date: 2012-10-03SHANGHAI SANY TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANGHAI SANY TECH
Publication Date
2012-10-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The embodiment of the invention discloses a device for improving the lateral load capacity of an arm support, and belongs to the technical field of improvement on the lateral load capacity of the arm support of a caterpillar crane. The device is arranged on the arm support and comprises two masts, a tensioning hoisting mechanism and a pawl locking device, wherein the two masts are symmetrically arranged on the two sides of the arm support respectively and perpendicular to the arm support; the two masts and the arm support are positioned on the same plane; the masts are hinged with the arm support; the tensioning hoisting mechanism and the pawl locking device are arranged at the head ends of the masts, which are far away from the arm support; a guide pulley is arranged on the top of the arm support; a steel wire rope is connected between the guide pulley and the tensioning hoisting mechanism; the head end of each mast is connected with the root of the arm support through a connecting device; a pull sensor is arranged on the connecting device; and a controller controls the rotation direction of the tensioning hoisting mechanism through a signal from the pull sensor. Part of lateral loads can be offset by a lateral support device, the stress condition of a main arm is improved, the lateral stability of the arm support is improved, and the load capacity of the arm support is improved.
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Description

technical field

[0001] The invention relates to improving the lateral load capacity of a boom frame of a crawler crane, in particular to a method, a device and a crane for improving the lateral load capacity of a boom frame. Background technique

[0002] With the development of modular design, the global hoisting market has more and more requirements for the lifting capacity of crawler cranes, and the height of the position is getting higher and higher. Therefore, the lattice boom is developing in the direction of large cross-section, large length, and heavy weight.

[0003] However, in actual situations, the requirements for the width of domestic and foreign transportation strictly limit the section of the truss arm. This leads to a contradiction between the lifting capacity of the lattice arm and the limitation of the section. Contents of the invention

[0004] A device for improving the lateral load capacity of the jib is now provided. The lateral support can offset pa...

Claims

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