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Steel wire rope pre-tightening device and tower crane with same

A technology of wire rope and wire rope reel, which is applied in the field of tower cranes, can solve the problems of inconvenient disassembly and easy slipping, and achieve the effect of convenient loading and unloading and meeting the requirements of multi-working conditions

Active Publication Date: 2012-05-09
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the friction disc system 30' is manually controlled, it is difficult to effectively brake and slip easily in actual use
And when changing the wire rope reel 10', it is not convenient enough to disassemble

Method used

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  • Steel wire rope pre-tightening device and tower crane with same
  • Steel wire rope pre-tightening device and tower crane with same
  • Steel wire rope pre-tightening device and tower crane with same

Examples

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Embodiment Construction

[0020] 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. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] Such as figure 2 As shown, the wire rope pretensioning device of the present invention includes a central shaft assembly 4, and the central shaft assembly 4 includes a rotating shaft for passing through the central hole of the wire rope reel 3 and a fixing device for fixing the wire rope reel 3 on the rotating shaft. The pretensioning device also includes a magnetic powder brake 1 connected with the rotating shaft. Magnetic powder brake 1 is an automatic control element with superior performance. It uses magnetic powder as the working medium and excitation current as the control means to achieve the purpose of controlling the dynamic torque. Its output torque has a good linear relation...

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PUM

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Abstract

The invention provides a steel wire rope pre-tightening device and a tower crane with the same. The steel wire rope pre-tightening device comprises a central shaft component (4) and a magnetic powder brake (1), the central shaft component (4) comprises a rotary shaft and a fixing device, the rotary shaft penetrates through a central hole of a steel wire rope drum (3), the fixing device is used for fixing the steel wire rope drum (3) onto the rotary shaft, and the magnetic powder brake (1) is connected with the rotary shaft. Since the magnetic powder brake exerts brake torque on the rotary shaft, a steel wire rope can be pre-tightened conveniently and reliably.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a wire rope pretensioning device and a tower crane with the same. Background technique [0002] Before the wire rope is wound on the drum of the hoisting mechanism of the tower crane, the wire rope needs to be tensioned in advance. Under normal circumstances, the steel wire rope is pre-tightened and then reinforced, and then wound on the drum of the hoisting mechanism. Wherein, the device for tensioning the wire rope in advance is the wire rope pretensioning device. [0003] In the prior art, the pre-tensioning device for the steel wire rope wound on the reel 10' is as figure 1 As shown, the mandrel of the central shaft assembly 20' passes through the inner hole of the wire rope drum 10', and passes through the top cone of the central shaft assembly 20' to fasten the drum 10', so that the drum 10' and the central shaft assembly 20' together Rotates on idler roller assembly 40...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/36B66C23/16
Inventor 易德辉郑兴陈汉湘李双林
Owner ZOOMLION HEAVY IND CO LTD
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