The invention discloses an active self-excitation type high-frequency damping method applied to high-altitude hoisting, which comprises the following steps: mounting a vibration motor on a hoisting rope of a crane, hoisting a hoisted object by using a hoisting hook of the crane, and setting the frequency # imgabs0 # of the vibration motor as the self-vibration fundamental frequency # imgabs1 # of a simple pendulum system formed by the hoisted object and the hoisting rope before the vibration motor is mounted; wherein a three-dimensional acceleration sensor is arranged on the lifting hook; after the reading of the three-dimensional acceleration sensor is kept stable, the vibration of the hoisted object is ensured to be in a stable state; and judging whether the vibration amplitude of the hoisted object meets the hoisting precision or not according to the reading of the three-dimensional acceleration sensor. The simple pendulum system has the advantages that the vibration motor is additionally arranged on the lifting rope, the three-dimensional acceleration sensor is additionally arranged on the lifting hook, and the vibration frequency of the vibration motor is regularly changed, so that the simple pendulum system formed by the lifting rope and a lifted object enters a forced vibration state, the external interference is counteracted, the effect of reducing the vibration amplitude of the lifted object is achieved, and the lifting precision is improved.
本发明公开了一种应用于高空吊装的主动自激励式高频减震方法,方法包括:在吊车的吊绳上安装振动电机,利用吊车的吊钩吊挂吊装物,并将振动电机的频率#imgabs0#设定为,未安装振动电机前,吊装物与吊绳构成的单摆系统的自振基频#imgabs1#;其中,吊钩上设置有三维加速度感应器;待三维加速度传感器读数保持稳定,以确保吊装物的振动处于稳定状态;根据三维加速度传感器读数判断此时吊装物的振动幅度是否满足吊装精度。本发明的优点是:在吊绳上加装振动电机,在吊钩上加装三维加速度感应器,通过有规律地改变振动电机的振动频率,使吊绳与吊装物构成的单摆系统进入受迫振动状态,进而抵消外界的干扰,达到减小吊装物振动幅度的效果,提高吊装精度。
Active self-excitation type high-frequency damping method applied to high-altitude hoisting
一种应用于高空吊装的主动自激励式高频减震方法
2024-04-02
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
European Patent Office | 2020
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