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Tower crane rotation control equipment, system and method and tower crane

A technology for controlling equipment and tower cranes, which is applied to cranes, transportation and packaging, load hanging components, etc., and can solve problems that affect the safety of operations and the swing of hanging objects

Active Publication Date: 2012-12-05
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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 regulation) torque eddy current motor control, etc. There is a phenomenon of hanging objects swaying, which seriously affects the operation safety

Method used

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  • Tower crane rotation control equipment, system and method and tower crane
  • Tower crane rotation control equipment, system and method and tower crane
  • Tower crane rotation control equipment, system and method and tower crane

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0017] figure 1 It is a block diagram of a tower crane slewing control device according to an embodiment of the present invention. The tower crane includes a spreader, a jib, a slewing device, a motor and a frequency converter, the frequency converter is used to drive the motor, the motor is used to drive the slewing device, the slewing device is used to drive the jib, and the spreader is flexibly connected to the jib.

[0018] Such as figure 1 As shown, the equipment includes: receiving device 12, used to receive the actual angular velocity or acceleration of the spreader and the angular velocity or acceleration of the boom; and a control device 14, used to o...

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PUM

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Abstract

The invention discloses tower crane rotation control equipment, a system and a method and a tower crane. The tower crane comprises a hanger, an arm rest, a rotation device, a motor and a frequency converter, wherein the frequency converter is used for driving the motor, the motor is used for driving the rotation device, and the rotation device is used for driving the arm rest; and the hanger is flexibly connected with the arm rest. The equipment comprises a receiving device and a control device, wherein the receiving device is used for receiving the actual angular speed or accelerated speed of the hanger; and the control device is used for obtaining the angular speed or accelerated speed of the arm rest, determining the rotation speed and the real-time angular displacement of the hanger according to the actual angular speed or accelerated speed of the hanger, determining the rotation speed and the real-time angular displacement of the arm rest according to the angular speed or accelerated speed of the arm rest, causing the rotation speed and the real-time angular displacement of the hanger to be respectively compared with the rotation speed and the real-time angular displacement of the arm rest, and controlling the frequency of the frequency converter according to compared results. By using the control equipment, the real-time following control of the arm rest speed to the hanger speed can be realized, so that the anti-sway effect is achieved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a tower crane rotation control device, system and method, and a tower crane. Background technique [0002] 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 regulation) torque eddy current motor control, etc. There is a phenomenon of hanging objects swaying, which seriously affects the operation safety. Contents of the invention [0003] The purpose of the present invention is to provide a tower crane slewing control device, system and method and tower crane to solve the above-mentioned problems in the prior art. [0004] In order to achieve the above object, the present invention provides a tower crane slewing control device, the tower crane includes a spreader, a jib, a slewing device, a motor and a frequency converter, the frequency converte...

Claims

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Application Information

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IPC IPC(8): B66C13/22B66C23/16
Inventor 李明费胜巍张国栋李志杰徐亚光
Owner ZOOMLION HEAVY IND CO LTD
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