电动葫芦一般安装在门式起重机，单梁起重机，桥式起重机，悬挂起重机上。稍加改造，还可以作卷扬机用。所以说，它是提高劳动效率，改善劳动条件的必备工具，电动葫芦反转急刹车有哪些危害呢，以下是给出的介绍： Electric hoists are generally installed on gantry cranes, single beam cranes, overhead cranes and suspension cranes. The utility model can also be used as a hoister. Therefore, it is an essential tool for improving labor efficiency and improving working conditions. What harm does the electric hoist reverse the brakes on? What is the following description?: 1如果给高速运转的电机一个反方向力，那么会造成强烈的冲击，烧损电机。 1, if the high-speed motor running a reverse force, then it will cause a strong impact, burning the motor. 2急刹车也会造成齿轮之间的强烈磨擦撞击，引发设备事故。 2, the brake will cause sharp friction between gears, causing equipment accidents. 3如果电动葫芦挂在起重机上，由于起重机重量较大，如果突然给它一个反向力，电动葫芦会因为强大的惯力而产生很大的扭矩，会造成传动系统，以及机身的损伤。 3 if the electric hoist crane crane hanging on, because the weight is big, if you suddenly give it a reverse force, electric hoist because of strong inertial force and large torque will cause the transmission system, and the damage. 4起吊中的重物会摇摆晃动，发生坠落事故。 4 the heavy objects in the lifting will sway and fall.