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Tower crane

A technology of tower cranes and tower cranes, which is applied in the direction of cranes, etc., and can solve the problems of difficult processing and transportation, large superstructure size, and high cost

Active Publication Date: 2013-02-27
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In foreign tower crane manufacturers, in order to obtain a larger effective working range, the cross-sectional size of the boom structure is increased to enhance the lateral load-bearing capacity, but compared with the short-arm long tower crane with the same lifting moment, its superstructure The size is too large, the cost is high, and processing and transportation are difficult, and the maximum length of the foreign boom can only reach 100 meters

Method used

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Embodiment Construction

[0042] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. 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.

[0043] Such asfigure 1 As shown, according to an embodiment of the present invention, a tower crane is provided, including a tower body 10, a slewing mechanism 20 arranged on the top of the tower body 10, and an upper structure 30 arranged on the slewing mechanism 20, wherein the tower body 10 The bottom of the tower is fixed on the ground through a fixed foundation 11. The tower body 10 includes a plurality of standard sections fixedly connected together. The top of the tower body 10 is provided with a jacking mechanism 12 for adding standard sections. The jacking mechanism 12 includes a surrounding The climbing frame outside the standard section can jack up the upper structure 30 of the tower body ...

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Abstract

The invention provides a tower crane, which comprises a tower body, a slewing mechanism which is arranged at the top of the tower body, and a superstructure which is arranged on the slewing mechanism. The superstructure comprises a tower crane jib, a top mast and a balance arm. The tower crane is characterized in that the tower crane jib comprises a jib frame, the jib frame comprises a jib root and a jib tip, the section of the jib root is quadrilateral, the section of the jib tip is triangular, the jib root is fixedly connected with the slewing mechanism, the jib tip lower chord of the jib tip is rotatably connected with the jib root lower chord of the jib root, the jib tip upper chord of the jib tip is disconnected from the jib root upper chord of the jib root, the jib root is connected to the top mast through a first draw bar and the jib tip is connected to the top mast through a second draw bar. The tower crane has the advantages that the lateral bearing capacity of the tower crane jib can be obviously improved, the stability of the tower crane jib is improved, the superstructure of the tower crane is reduced and the cost of the tower crane is decreased.

Description

technical field [0001] The invention relates to the field of construction hoisting machinery, in particular to a tower crane. Background technique [0002] For tower cranes with horizontal arms at the tower head, most of them use double boom tie rods, and a few use single tie rods for short boom or small tower cranes, and the boom section adopts a single shape, that is, triangle or quadrilateral. [0003] The above scheme is the best scheme for tower cranes with short boom lengths, but for tower cranes with long boom lengths, especially over 80 meters, double tie rods and two hoists The point spacing becomes larger, thereby reducing the load-carrying capacity of the jib in the vertical plane. [0004] In foreign tower crane manufacturers, in order to obtain a larger effective working range, the cross-sectional size of the boom structure is increased to enhance the lateral load-bearing capacity, but compared with the short-arm long tower crane with the same lifting moment, i...

Claims

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Application Information

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IPC IPC(8): B66C23/64B66C23/78B66C23/62
Inventor 阳云华李桂芳
Owner ZOOMLION HEAVY IND CO LTD
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