电动葫芦在使用的过程中电机直接起来很大的作用，电动葫芦的电机如果配备的是双速电机，那么，它就有快速和慢速，它的主要作用是方便升降物件时的速度可以随意控制，减少物件升降时的惯性，因为快速惯性大。
Electric hoist motor direct play a big part in the use process, if the motor electric hoist is equipped with double speed motor, so, it is fast and slow, its main role is to facilitate the speed of lifting objects can be freely controlled object, reduce the lift of the inertia, because of the fast large inertia.
电动葫芦最为被广泛使用的轻型起重设备，其工作特点具有，反复多次短时间运行，频繁起升、反转和制动，经常过载，作业环境多为多灰尘和金属粉尘环境，作业时产生强烈震动，因此为了满足电动葫芦需要，作为其主要的动力来源的电机应具有以下特点:
The most widely used light lifting equipment for the electric hoist, has its characteristics, repeated short running time, frequent lifting, braking and reverse, often overload, the working environment is much dust and metal dust generated during operation, strong vibration, so in order to meet the need of electric hoist motor, as its main the power source should have the following characteristics:
1、首先电动葫芦的电机应比普通工业电机有更强断续周期工作特性，依据负载持续率、接点次数、起重次数作为电机选用的重要参数。
1, the first motor hoist should have characteristics of intermittent cycle more than ordinary industrial motor, based on the load duration factor, contact number, lifting the number as the important parameters of the motor selection.
2、电动葫芦电机应该有更好的起升转矩和过载能力，
2, electric hoist motor should be better lifting torque and overload capacity,
3、电动葫芦电机因具备更小的转子转动惯量，更大的转子长径比，更少的视线制动。
3, electric hoist motor because the rotor has smaller moment of inertia, the rotor larger ratio of length to diameter, the line of sight brake less.
4、电动葫芦上电机应具最大安全转速是额定转速的数倍，一般情况下是同步转速的2.5倍左右。
4, electric hoist motor should be maximum safe speed is rated speed several times, in general is about 2.5 times of the synchronous speed.
5、电动葫芦电机应适应不同的工作温度和湿度、并且应最低具有2个等级一样的绝缘等级。
5, electric hoist motor should adapt to different working temperature and humidity, and the lowest with 2 grade insulation level.
由于绝缘技术的不断发展，在电机的设计上既要求增加出力，又要求减小体积，使新型电动葫芦电机的热容量越来越小，负荷能力越来越弱；再由于生产自动化程度的提高，要求电机经常运行在频繁的起动、制动、正反转以及变负荷等多种方式，对电机保护装置提出了更高的要求。
Due to the continuous development of insulation technology, not only to increase the output of the motor design, and reduce the volume, heat capacity of the new electric hoist motor is more and more small, load capacity is more and more weak; due to the improvement of production automation, the motor always runs in frequent starting, braking, reverse and variable load in many ways, put forward higher request to the motor protection device.