Heavy object hoisting control method, driver and readable storage medium

Abstract

The invention discloses a heavy object hoisting control method, a driver and a readable storage medium, and the method comprises the following steps: when the driver controls a motor to drive a hoisting mechanism to move upwards according to a target rotating speed, monitoring whether the motor enters a stable light-load operation state or not; if the motor enters the stable light-load operation state, controlling the driver to enter an anti-impact protection mode, and monitoring whether the motor enters a load sudden change operation state or not in the anti-impact protection mode; if the motor enters the load abrupt change operation state, controlling the driver to enter a rapid deceleration operation mode, in the rapid deceleration operation mode, controlling the rotation speed of the motor to be decelerated to a preset heavy load protection speed within a preset time, and monitoring whether the load abrupt change of the motor is completed or not; and if the sudden change of the load of the motor is completed, the driver is controlled to enter the anti-impact operation mode again. The invention aims to reduce the damage to a tower crane building structure and a steel wire rope and improve the hoisting efficiency.

Description

technical field [0001] The invention relates to the technical field of heavy object lifting, in particular to a method for controlling heavy object lifting, a driver and a readable storage medium. Background technique [0002] In the operation of the tower crane lifting structure, the heavy object is generally connected with the lifting mechanism through a flexible steel wire rope or a lifting belt. In order to hang the heavy object to be hoisted on the hook, it is necessary to allow the wire rope to be lowered to a slack state to facilitate the hanging operation. At the moment when the heavy object is lifted off the ground by the hoisting mechanism, the wire rope changes rapidly from a loose state to a tight state, and the load borne by the hoisting mechanism has a process of sudden change from light load to heavy load. If the wire rope is hoisted at high speed Pulling the heavy object off the ground, due to the elasticity of the tower crane structure and the steel wire ro...

AI Technical Summary

Problems solved by technology

At the moment when the heavy object is lifted off the ground by the hoisting mechanism, the wire rope changes rapidly from a loose state to a tight state, and the load borne by the hoisting mechanism has a process of sudden change from light load to heavy load. If the wire rope is hoisted at high speed Pulling the heavy object off the ground, due to the elasticity of the tower crane structure and the steel wire rope, will cause the boom of the tower crane to vibrate violently up and down. Very large impact, which can also seriously damage the durability of the wire rope

Therefore, when lifting heavy objects, the tower crane driver needs to focus on the heavy objects, and then operate the lifting handle to control the hook to rise slowly. For the damage to the building structure of the tower crane and the steel wire rope, this method of lifting heavy objects is not only inefficient, but also due to many uncertain factors under manual operation, it is difficult to accurately control the lifting rate when the lifting mechanism pulls the heavy object off the ground. The building structure of the tower crane and the wire rope are still vulnerable to damage

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