The traction drive uses a traction sheave as a drive component. The wire rope is suspended on the traction sheave, the car is suspended at one end, and the counterweight is suspended at the other end. The friction between the wire rope of the hydraulic lifting platform and the traction sheave generates traction force to drive the car to run up and down.
1. Measures to improve traction ability
a. Change the shape of the rope groove and the material of the rope groove to increase the friction coefficient.
b. increase the wrap angle
c. Increase the weight of the car
2. Rope way
The method of winding the wire rope of the hydraulic lifting platform mainly depends on the position of the traction unit, the rated load of the car and the rated speed. In the choice, determine the rope winding mode should consider higher transmission efficiency, reasonable energy consumption and is conducive to the extension of the service life of the wire rope.
3. Traction force calculation
The maximum effective traction force that can be generated in the traction sheave is a function of the coefficient of friction between the wire rope and the wheel groove and the angle of the wire rope around the traction wheel.
4. Calculation of specific pressure of wire rope in the traction sheave (see textbook)
5. Coefficient of friction of wire rope in rope groove (see textbook)
6. Reasons for the wear of the traction sheave
The factors affecting the life of the hydraulic lifting platform and the rail elevator wire rope generally affect the life of the traction sheave as well, and have the following factors:
a. traction wheel itself
b. Construction, material and physical properties of wire rope
c. Car running height
d. load
e. Technical parameters of the traction machine and other components
f. Environment and maintenance (http://)
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