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Arm section of truss arm, truss arm and crane

A lattice boom and crane technology, which is applied in the field of construction machinery, can solve the problems such as the failure of the lattice boom to exert its bearing capacity well, and achieve the effects of easy connection, flexible setting position, and convenient setting position.

Inactive Publication Date: 2012-11-14
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stability of the truss arm on the slewing plane and the luffing plane is often different, and the load-carrying capacity of the boom depends on the weaker side of the truss arm, which leads to the fact that the truss arm cannot perform its load-bearing capacity well.

Method used

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  • Arm section of truss arm, truss arm and crane
  • Arm section of truss arm, truss arm and crane
  • Arm section of truss arm, truss arm and crane

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Embodiment Construction

[0040] It should be noted that, in the case of no conflict, the embodiments of the present invention 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.

[0041] The reason why the existing lattice arms are difficult to apply to various working conditions is that the stability of the lattice arms in different directions is related to the aspect ratio of its overall section, but the adjustment space of the width and height of the section of the existing lattice arms is small, Often limited by the size and specification of the intermediate arm. To solve this problem, the present invention considers to rotate some of the existing intermediate arms by 90° and install them in the truss arm, and to change the aspect ratio of the overall section of the truss arm by using the difference in the aspect ratio of the intermediate arm section before and after r...

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Abstract

The invention discloses an arm section of a truss arm, the truss arm and a crane. The arm section of the truss arm comprises a first side and a second side in relative arrangement, in addition, the width of the cross section of the first side is the same as the height of the cross section of the second side, and the height of the cross section of the first side is the same as the width of the cross section of the second side. One side of the arm section of the truss arm can be connected with a middle arm which is rotated for 90 degrees, the regulation on the width-to-height ratio of the whole cross section of the truss arm can be realized through regulating the section number and the length of the rotated middle arm, further, the stability of the truss arm in the two directions at the amplitude variation surface and the rotating surface can be conveniently regulated, and the carrying capability of the truss arm is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a truss arm section, a truss arm and a crane. Background technique [0002] Crane is a kind of construction machinery capable of lifting, transporting and loading and unloading materials. It is widely used in construction, transportation, ports, energy and farmland water conservancy and other fields, such as building bridges, installing power generation equipment, shipbuilding, and erecting wind power. generator set etc. [0003] A crane usually consists of a power unit, a working mechanism, a jib, a turntable and a traveling device. The jib is mostly a truss arm structure, the lower end of which is hinged to the platform on the turntable, and the top is suspended and supported by a luffing wire rope pulley block, which can change its inclination angle. See figure 1 , the existing truss arm includes: the arm head 2', the lower arm 3' and at least one intermediate arm 4' be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/70
Inventor 廖建国张世勇
Owner SANY HEAVY IND CO LTD (CN)
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