Tower crane hoisting control device, method, system and tower crane

Abstract

The invention discloses a tower crane as well as a hoisting control device, method, system thereof. The control device comprises a receiving device and a control device, wherein the receiving device is used for receiving a running starting signal or running stopping signal, and the frequency, voltage and torque current of a frequency converter; and the control device is used for controlling a brake to execute an unlocking action or locking action when the frequency, the voltage and the torque current all reach thresholds corresponding to the running starting signal or running stopping signal. According to the control device, the action of the brake is controlled according to the running starting signal or running stopping signal, the frequency, the voltage and the torque current, the slippage in unlocking and locking processes can be prevented, and the safety of the hoisting control system is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a tower crane hoisting control device, method, system and tower crane. Background technique [0002] Tower cranes are widely used in the construction field for hoisting building materials. Usually, the tower crane generally works under the control of the tower crane control system. In the tower crane hoisting control system, when the tower crane hoisting system opens the gate during the start-up process (that is, the moment the controller is released), the hook slip phenomenon will occur due to the insufficient torque of the drive system, for example, due to frequency conversion The action logic sequence of the actuator and the brake cannot be fully coordinated, resulting in insufficient frequency conversion torque and the release of the brake, resulting in the phenomenon of slipping hooks, and slipping hooks may lead to some unexpected results, such as actual damage to obje...

AI Technical Summary

Problems solved by technology

In the tower crane hoisting control system, when the tower crane hoisting system opens the gate during the start-up process (that is, the moment the controller is released), the hook slip phenomenon will occur due to the insufficient torque of the drive system, for example, due to frequency conversion The action logic sequence of the actuator and the brake cannot be fully coordinated, resulting in insufficient frequency conversion torque and the release of the brake, resulting in the phenomenon of slipping hooks, and slipping hooks may lead to some unexpected results, such as actual damage to objects and personnel, or psychologically to personnel cause some damages

Aiming at the problem of the sliding hook, the method of expanding the capacity of the drive system is mainly used at present to solve the problem of insufficient torque of the drive system during the start-up process. However, the physical parameters referred to by the control technical scheme of the prior art are too single, which makes the control The robustness is not strong enough, resulting in the phenomenon of slipping the hook from time to time

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