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Tower crane

A technology for tower cranes and hoisting wire ropes, applied in cranes and other directions, can solve problems such as insufficient hoisting height and self-balancing of the jacking system, and achieve the effects of reducing the pulling force of a single rope, reducing the difficulty of installation, and reducing the difficulty of processing

Inactive Publication Date: 2012-06-13
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first purpose of the tower crane of the present invention is to solve the problem of insufficient lifting height of the existing super large tower crane
[0009] The further purpose of the tower crane of the present invention is to solve the problem of the super large self-weight load and the self-balancing of the jacking system in the process of self-lifting and adding joints of the extra-large upper-slewing self-elevating tower crane

Method used

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Embodiment Construction

[0065] The present invention will be described in detail below with reference to the accompanying 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.

[0066] figure 1 A schematic diagram of the overall structure of the tower crane of this embodiment is shown. The tower crane includes a fixed foundation 1, a number of standard sections 2, a climbing frame and a jacking system 100, an introduction system 4, a lower support assembly 300, a driver's cab 6, a slewing bearing 7, an upper support 8, a balance arm 9, a lift Lifting mechanism 10, electric control system 11, auxiliary lifting mechanism 12, balance arm rod 13, bracket 14, luffing mechanism 15, slewing mechanism 16, boom rod 500, boom 400, wire rope winding system 200 and others Accessories.

[0067] The fixed foundation 1 and the standard section 2 of the tower body, and between the ...

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Abstract

The invention provides a tower crane. The tower crane comprises a climbing frame and jacking system (100), wherein the climbing frame and jacking system (100) comprises a climbing frame (110) and a jacking system for jacking the climbing frame (110); the jacking system comprises an upper cross beam (140) connected with the climbing frame (110), a jacking cross beam (130) supported on a standard section (2) and a hydraulic system; the hydraulic system comprises a plurality of jacking oil cylinders (120) supported between the upper cross beam (140) and the jacking cross beam (130); the jacking oil cylinders (120) are arranged on the side face, which is positioned on the balance arm side, of the climbing frame (110) and two side faces, which are adjacent to the first side face, of the climbing frame (110) respectively; and more than two jacking oil cylinders (120) are arranged on at least one of the three side faces. According to the tower crane, an upward rotary self-lifting structure is adopted in a super-huge type tower crane, so that the maximum lifting height of the super-huge type tower crane is increased.

Description

technical field [0001] The present invention relates to the field of hoisting machinery, more specifically, to a tower crane. Background technique [0002] With the country's great investment in infrastructure, the construction of shipyards, transportation facilities and power facilities requires more and more super-large tonnage tower cranes, and the requirements for maximum lifting capacity are getting higher and higher, especially for cable-stayed bridges in bridge construction. and the piers of the suspension bridge. For example, the pier height of cable-stayed bridges and suspension bridges at this stage is about 190 meters, and prefabricated segmental box girders are used, and the segmental weight is about 160-220 tons. If ship cranes or other lifting equipment are used, it is more ideal to use tower cranes for installation due to the influence of the site and flood season, and more importantly, the influence of hoisting height. According to market research, a bridge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/16B66C23/62
Inventor 阳云华李桂芳
Owner ZOOMLION HEAVY IND CO LTD
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