The invention relates to the technical field of power installation, and discloses a hoisting protection device for large power equipment installation. The hoisting protection device comprises a clamping seat, a clamping groove is formed in the inner wall of the middle of the clamping seat, the inner wall of the middle of the clamping seat is movably connected with a wire coil, and the inner wall of the middle of the wire coil is movably connected with a push rod. According to the hoisting protection device for the large power equipment installation, the wire coil drives a trigger electrode to move, the trigger electrode drives a dielectric plate to move, then a negative plate and an electrorheological fluid are used in cooperation, and therefore the speed limiting effect is achieved; when the speed of the wire coil is in a non-uniform-speed state, traction force borne by the trigger electrode changes continuously at the moment; and when the traction force borne by the trigger electrode is larger than the traction force of a second reset spring, the negative plate and a positive plate gradually change from the original minimum relative area to the maximum area, the maximum access voltage of a piezoresistor is achieved, a conductive column is in the access state, the electrorheological fluid is changed from the liquid state to the solid state at the moment, and the resistance borne by the outer side of a fixed shaft is large, so that the rotating speed of the wire coil is reduced.
本发明涉及电力安装技术领域,且公开了一种大型电力设备安装用吊装保护装置,包括卡座,所述卡座中部内壁开设有卡槽,卡座中部内壁活动连接有线盘,线盘中部内壁活动连接有推杆。该大型电力设备安装用吊装保护装置,通过线盘带动触发电极运动,触发电极带动电介质板运动,再通过负极板与电流变液的配合使用,从而达到限速的效果,当线盘的速度处于非匀速状态时,此时触发电极受到的牵引力不断变化,当触发电极受到的牵引力大于复位弹簧二的牵引力时,负极板和正极板由原来的最小相对面积逐渐变为最大此时达到压敏电阻的最大通路电压,使得导电柱处于通路状态,此时电流变液由液态转变为固态,定轴外侧受到的阻力较大,从而使线盘转速下降。
Hoisting protection device for large power equipment installation
一种大型电力设备安装用吊装保护装置
2021-11-02
Patent
Electronic Resource
Chinese
Hoisting device for large-scale electrical equipment installation
European Patent Office | 2021
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