The traction sheave is a sheave on the traction machine, also known as a traction sheave or a reel sheave. The device transmits the traction power by the elevator, and transmits the power by the frictional force of the traction wire rope and the rope groove on the traction rim, and is mounted on the worm wheel shaft in the reducer. In the case of a gearless traction machine, it is mounted on the side of the brake and on the same axis as the motor shaft and the brake shaft. (1) Material and structural requirements of the traction sheave 1Material and process requirements: Since the traction sheave must bear all the dynamic and static loads of the car, load capacity, counterweight and other devices, the traction sheave is required to have high strength, good toughness, wear resistance and impact resistance, so it is used in materials. QT60-2 spheroidal graphite cast iron. In order to reduce the wear of the traction wire rope in the rope groove of the traction sheave, in addition to selecting a suitable rope groove groove type, the roughness and hardness of the working surface of the rope groove should be reasonably required. 2 Diameter of the traction sheave: The diameter of the traction sheave is greater than 40 times the diameter of the rope. In practice, it is generally 45 to 55 times, and sometimes more than 60 times. Because the reduction ratio of the reducer is increased in order to reduce the volume of the traction machine, the diameter should be appropriate. 3 The structure of the traction sheave: the whole traction sheave is divided into two parts, the middle is the drum (drum), the outer rim groove is cut on the rim, the outer rim and the inner drum are set, and the hinge is used The bolts are joined together to form a single traction sheave. The axis of the traction sheave is the worm gear shaft in the reducer. (2) Traction wheel rope groove shape: The traction force of the moving elevator in the old area of ​​the towing bow is generated by the friction between the traction rope and the rope groove of the traction sheave. Zhuzhou Zhirong Advanced Material Co., Ltd , https://www.zrcarbide.com