吊钩是液压升降平台车的附加起重装置。
Hook is a hydraulic lifting platform car attached lifting device.
手动液压升降平台车是采用手压或脚踏两种为动力，通过液压驱动使载重平台作升降运动的手推平台车。
Manual hydraulic lifting table trolley driven by hydraulic pressure employs manual or pedal power; through lifting movement make loaded table work as hand-hydraulic table trolley.
尽管厂家把二者合二为一，但实质上，附加了起重装置的液压升降平台车包含了两类不同型式的起重机械。
Although manufacturers to become the two, but in fact, attached to a lifting device of the hydraulic lifting platform vehicle contains two different types of cranes.
据了解，目前许多厂家生产的液压升降平台车的高空作业陛能通过了型式试验，而附加的起重装置没有做型式试验。
Reportedly, at present, many manufacturers of hydraulic lifting platform car high-altitude performance through the test, which is attached to the lifting device not type test.
根据《特种设备目录》，随车起重机属于起重机械中流动式起重机类，代码为4490，而液压升降平台车则属于起重机械中的升降机类，代码为4890。
According to the "special equipment directory", lorry crane which belongs to a hoisting machine in mobile crane, code 4490, and the hydraulic lifting platform vehicle is in crane lift type, code 4890.
根据《特种设备目录》，随车起重机属于起重机械中流动式起重机类，代码为4490，而液压升降平台车则属于起重机械中的升降机类，代码为4890。
According to the "special equipment directory", lorry crane which belongs to a hoisting machine in mobile crane, code 4490, and the hydraulic lifting platform vehicle is in crane lift type, code 4890.
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