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Control method, equipment and system for slewing jib of tower crane

A technology of slewing arms and jibs, which is applied in the control field of tower crane slewing jibs, can solve problems such as no effective solutions have been proposed, and achieve the effect of enhancing safety and improving stability

Active Publication Date: 2014-12-10
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the obvious problem of torsion arm swing dragon in the control mode of the slewing boom in the related technology, no effective solution has been proposed so far

Method used

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  • Control method, equipment and system for slewing jib of tower crane
  • Control method, equipment and system for slewing jib of tower crane
  • Control method, equipment and system for slewing jib of tower crane

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Embodiment Construction

[0032] 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.

[0033] The embodiment of the present invention considers that the rotating jib between the arm tip and the arm root may be bent during the operation of the tower crane's rotating jib. In order to reduce the torsional force between the arm tip and the arm root as much as possible, the embodiment of the present invention provides A control method, device and system for a slew jib of a tower crane are provided. The following will be described through specific examples.

[0034] see figure 1 The flow chart of the control method for the slewing jib of the tower crane is shown. The method is described by taking the application in the controller of the tower crane as an example, and specifically includes ...

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PUM

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Abstract

The invention provides a control method, equipment and system for a slewing jib of a tower crane. The method comprises the following steps: acquiring an angular difference of a jib root and a jib tip of the slewing jib in the operating process of the slewing jib of the tower crane; determining the position relation of the jib root and the jib tip according to the angular difference, and adjusting the running speed of the slewing jib according to the position relation so as to reduce the angular deviation degree between the jib root and the jib tip. According to the control method, the equipment and the system, the running stability of the slewing jib is improved, the problem of significant twisted arm swing existing in the slewing jib control mode in the associated technology is solved, and the safety of the system is enhanced.

Description

technical field [0001] The present invention relates to the field of engineering machinery, and more particularly, to a control method, device and system for a tower crane slewing jib. Background technique [0002] In the slewing system of the tower crane, since the slewing jib is very long, the response time of each part of the jib to the speed change is different during the speed transmission process, the root responds the fastest, and the jib tip responds the slowest. When accelerating, the tip of the arm lags and the root leads. When decelerating, the tip of the arm leads and the root lags. In this way, the mechanical deformation of the boom will be caused, causing the phenomenon of twisting the arm and swinging the dragon. At present, the slewing control methods of tower cranes include winding motor plus hydraulic coupler control, winding motor plus eddy current control, RCV (Rotation Control Voltage, slewing voltage controller) plus torque eddy current motor control,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/22B66C13/16
Inventor 衣磊何首文
Owner ZOOMLION HEAVY IND CO LTD
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