I. operating mechanism
The electric car, the running motor, the running reducer and the driven car together form a running mechanism. Suspension of the host for reciprocating movement. Its running speed is usually 20m/min, or 30m/min can be used. Lift more than 12m 1~5t, adding a driven car.
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Two, electrical equipment
The electrical equipment of CD1 and MD1 electric hoists consists of an electric control box (0.25t no), a button switch, a limiter and a connecting wire.
Button switch operating voltage is generally 380V or 36V, according to the button on the direction shown and symbols, the correct press button, through the control box, relay pull and disconnect, you can control the action of the gourd.
Three 、 lifting structure
The lifting device comprises the main part of the machine, hoisting structure by lifting motor through the coupling through the reducer hollow shaft drives the roller to rotate, so that the wire rope around the drum in the hook driven device to rise or fall.
When lifting height is H=6m, a claw shaft coupling is used to connect the motor shaft and the input shaft of the reducer. H = 9m is added in the intermediate shaft and the rigid coupling. H is not less than 18m, with a support to strengthen the rigidity of the intermediate shaft, ensure smooth rotation.
Lifting motor
The hoisting motor adopts a conical rotor motor with large starting torque, so as to meet the frequent direct startup of the product during intermittent operation. Type CD1 hoist is equipped with ZD single speed motor, MD1 type hoist is equipped with ZDS type double speed motor, ZDS type motor, constant speed and slow speed ratio of 10:1.
Reducer
The 0.25t speed reducer is a straight toothed planetary transmission structure, and the other reducers adopt three reduction gear of helical gear. The gears and shafts are made of alloy structural steel or high quality carbon steel and are properly treated to ensure their reliability and life. The box body and the case cover are made of cast iron. The utility model has good shock absorption and reliable sealing.
Reel device
The drums are made of cast iron or seamless steel tubes, using splines to transmit power. The spool housing is welded with steel plates.
Drum device is a central part of the hoist, through the balance beam and the operation mechanism is connected with the two ends of the hoisting speed reducer and motor are connected through the wire rope and hook device joint work, above the cover with stopper rod device.
Hook device
The hook is made of steel, and the thrust ball bearing is connected with the shell through the hook cross beam, so that the hook is operated freely. The 5T and the following hook device is a single sliding wheel, and the 10t and the above are double sliding wheels.
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