What’re type of electric hoist of gantry crane?
In order to improve the working efficiency of gantry crane, ZZHZ will install the electric hoist according to the customers’ requirements. 
It is consist of motor, transmission gear, drum and steel rope. There are four types according to the different place of motor and drum.
1. when the motor axis is vertical to the drum axis, the electric hoist adopts worm gear drive, too wide, heavy structure, low mechanism efficiency.
2. when the electric hoist’s motor axis is parallel to the drum axis with small size height and length, but too wide, complex manufacture and assembly.
The rail turning radius is big.
3. the electric hoist’s motor is installed into the drum with short length, compact structure. But the heat radiation is bad, and motor’ checking,
installing and maintaining, and power supplying device is complex.
4. the electric hoist’s motor is installed out of the drum with good group, high common using , easy changing the lifting height, convenient checking ,
but long length.
