Equipment, system and method for controlling slewing speed regulation of tower crane, and tower crane

A technology for controlling equipment and tower cranes, applied in control systems, AC motor control, electrical components, etc., can solve problems such as difficult to control the speed stably, unable to ensure that the speed reaches the target speed, etc., and achieve the effect of improving the speed regulation performance

Active Publication Date: 2012-11-14
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned control method has at least the following defects: it is difficult to achieve stable speed control under complex working conditions of the tower crane by using a frequency converter to control the eddy current, and it is also impossible to ensure that the adjusted speed reaches the target speed

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  • Equipment, system and method for controlling slewing speed regulation of tower crane, and tower crane
  • Equipment, system and method for controlling slewing speed regulation of tower crane, and tower crane
  • Equipment, system and method for controlling slewing speed regulation of tower crane, 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 2 It is a block diagram of a tower crane slewing speed regulation control device according to an embodiment of the present invention. Wherein, the tower crane includes a motor, a frequency converter and an eddy current device, the frequency converter is used to drive the motor, and the eddy current device is used to apply eddy current to the motor. The motor included in the tower crane can be a torque motor or other motors except the torque motor. Among them, the mechanical characteristics of the torque motor are relatively soft, which is conducive to improving the response speed.

[0018] Such as figure 2 As shown, the device includes: recei...

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Abstract

The invention discloses equipment, a system and a method for controlling the slewing speed regulation of a tower crane, as well as the tower crane, wherein the tower crane slewing speed regulation control equipment comprises a receiving device for receiving an actual speed signal of a motor; a processing device for comparing the actual speed of the motor with a target speed, calculating a signal value to be regulated corresponding to a deviation when an absolute value of the deviation between the actual speed of the motor and the target speed is within the range of a speed deviation, and controlling a frequency of a transducer or a current of a vortex device depending on the signal value to the regulated, so that a speed of the motor is regulated. By adoption of the tower crane slewing speed regulation control equipment, the speed of the motor is stably and precisely regulated to a target value, thereby a speed control performance is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a tower crane rotary speed regulation control device, system, method and tower crane. Background technique [0002] At present, the main control technologies of tower cranes include frequency conversion control technology, RCV (rotary control voltage regulation) control technology, cascade voltage regulation control technology, etc. figure 1 A schematic diagram of a speed regulation control system using a frequency converter to control the eddy current of a motor in the prior art is shown. Such as figure 1 As shown, on the basis of adjusting the frequency of the frequency converter 1 through the control signal, the frequency converter 1 is used to control the eddy current control module 2 to adjust the current of the eddy current device 3, so as to realize the adjustment of the eddy current of the motor M1. Inverter 1 outputs a DC analog control signal of 0-10V. By changing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/04
Inventor 何首文衣磊张二玲许明熠胡宇智
Owner ZOOMLION HEAVY IND CO LTD
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