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传动电动悬挂双钩吊车由升降机、减速器、制动装置、收放装置所组成的升降系统和运行电机、减速器,刹车装置所组成的运行系统及运行小车三大部分所组成,它存在着结构庞大复杂、重量大、造价高、安装调试工作量大、使用维修保养不便等多方面的不足,尤其在严防易燃易爆机具使用的工作场所,由于制动系统和控制系统工作时严重干摩擦引起火灾,有时还会发生严重的爆炸
Transmission Electric suspension double-hook crane consists of elevator, reducer, braking device, retractable device consisting of lifting system and run the motor, reducer, brake device composed of the operating system and the operation of the car consists of three parts, it exists the structure Large complex, heavy weight, high cost, large installation and commissioning work, the use of maintenance inconvenience, and many other deficiencies, especially in the workplace to prevent flammable and explosive equipment, the brake system and control system due to severe dry friction Cause a fire, sometimes serious explosion