Introduction of Electric wire rope hoist
CD/MD model electric wire rope hoist is a kind of big-sized lifting equipment. It can be mounted on single beam overhead cranes, gantry cranes, etc. With slight modification, we can also be used as a winch. It is widely used in factories, mines, harbours, warehouses, cargo storage area and shops, essential in raising working efficiency and improving working conditions.
Application:
1. Trolley electric hoist can be installed with most cranes or hang on the joist steel girder, lift cargo in straight line or curve line; Fixed electric hoist can be installed on fixed support and lift cargo with vertically or with different angles.
2. This series electric hoist applies to industrial enterprise, mining company, normal factory, workshop, railway, sea port, warehouse, stock ground and so on. This is the ideal equipment to improve working efficiency and working conditions nowadays.
Operate Conditions:
1. Working temperature: -20-+40 degree
2. Work moisture: <85%
3. Elevation: <1000m
4. No fire, no explosive goods, no corrosion medium.
5. Forbidden to lift melting metal, poisonous, explosive, flammable goods. The working duty is medium, when the working duty is level up, the rated lift capacity should be reduced accordingly (20% per level).
Transmission and Working Principle:
CD/MD model electric hoists are mainly composed of three parts: Lifting mechanism, travelling mechanism, electrical parts.
Wirerope motor hoist Hoisting /Lifting mechanism
1. Lifting motor drives rope drum rotating through coupling and hollow shaft of reducer, which makes the wirerope on the rope drum driving the hook unit up and down.
2. If lift height is 6m, a claw coupling is used to link the motor shaft and input shaft of reducer.
3. If lift height is or more than 9m, intermediate shaft and rigid coupling are added.
4. If lift height is or more than 18m, a carriage is used to enhance the rigidity of intermediate shaft.
Lifting motor
Lifting motor uses tapered rotor motor with strong staring torque to adapt frequent direct staring in the intermittent work. CD type hoist uses ZD type single speed motor and MD1 type hoist uses ZDS type double speed motor. The ratio of ZDS type motor's constant speed and slow speed is 10: 1
Speed reducer
Cap 2t hoist uses straight tooth planetary gear reducer and the rest are using helical gear three stage reducer. Gear and shaft are made by alloy steel and high carbon steel and through proper heat treatment to ensure its reliability and service life. Box body and cover is made of cast iron to ensure hoist's good damping performance and reliable sealing.
Wirerope motor hoist Rope Drum
Rope Drum is made of cast iron or seamless steel tube, using/with the help of spline transferring power. The sell of rope drum is welded with steel plate.
Rope drum is the central heart of a hoist. The upper side is linked with traveling mechanism through equalizing beam. Both ends are connected with lifting brake and motor respectively. The lower side works together with hook through wire rope. Up front of the cover, limiting stopper guide-rod and heavy punch stop block are installed.
Lifting hook
Lifting hook is forged with specialized steel. In the use of trust ball bearing, lifting hook is linked with sheel through hook beam making lifting hook go slick. If lift capacity is five ton or less than five ton, slide wheel is single. If lift capacity is ten ton or more than ten ton, slide wheels are double.
Electric device
The electric device of CD/MD model hoist consists of electric control box, button switch, Limiting stopper, connecting wires and so on.
The normal operating voltage of button switch is 380V or 36V. Pressing the correct button can control the hoist through controlling on and off of the relay in the control box, according to the direction symbols on the button switch.
Audited Supplier 
){kind=link}