Arm joint for truss arm, truss arm, and crane with truss arm

A technology of truss arms and cranes, which is applied in the field of heavy machinery, can solve the problems of increased self-weight of truss arms and affecting lifting performance, etc., and achieve the effect of reducing truss structure size, material selection specifications and strength requirements

Active Publication Date: 2012-07-04
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Moreover, with the increase of the lifting capacity of the crane, it is necessary to increase the cross-sectional area of ​​the lattice arm to ensure the force, and the increase in the cross-section of the lattice arm will inevitably lead to an increase in the self-weight of the lattice arm, which will affect the lifting performance

Method used

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  • Arm joint for truss arm, truss arm, and crane with truss arm
  • Arm joint for truss arm, truss arm, and crane with truss arm
  • Arm joint for truss arm, truss arm, and crane with truss arm

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Embodiment Construction

[0027] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the following will be combined with the drawings and preferred embodiments to describe the lattice jib section, the lattice arm and the crane with the lattice arm according to the present invention. Specific implementation, structure, feature and effect thereof are described in detail as follows:

[0028] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the present invention limit.

[00...

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Abstract

The invention provides an arm joint for a truss arm. The arm joint comprises an arm joint body, top connection structures which are arranged on the top of the arm joint body, bottom connection structures arranged at the bottom of the arm joint body, and pull plates arranged on two sides of the arm joint body; the arm joint body has a truss structure and an extending axis; and the pull plates extend from the upper part to the lower part of the arm joint body, and the extending direction of the pull plate is almost parallel to that of the extending axis of the arm joint body. The invention also provides the truss arm and a crane with the truss arm. According to the arm joint for the truss arm, the truss arm and the crane with the truss arm, the truss arm can bear pressure and tension.

Description

technical field [0001] The invention relates to the field of heavy machinery, and in particular to a lattice jib section, a lattice jib and a crane with the lattice jib. Background technique [0002] The boom structure of the crane is divided into lattice boom and box telescopic boom. [0003] The lattice boom is mainly used in crawler cranes and ring rail cranes, etc. Its advantages are simple structure, large lifting capacity, small grounding ratio, and easy maintenance. [0004] However, existing lattice booms, ie, lattice jibs, are mostly designed to bear compression and are not inclined to bear tension. Therefore, the commonly used lattice jib crane must be equipped with a mast and a tension plate. The mast, tension plate and lattice arm are arranged in a triangle, and the tension plate bears the tension. At this time, the lattice arm basically bears the pressure. [0005] Moreover, with the increase of the lifting capacity of the crane, the cross-sectional area of ​​...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/70
CPCB66C23/70
Inventor 詹纯新刘权高一平牟江涛钟兴华邓志燕
Owner ZOOMLION HEAVY IND CO LTD
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