An elevator traction machine and its steel belt

Abstract

The invention discloses an elevator tractor and a steel belt thereof. The elevator tractor comprises a base, a motor, a reducer, a power-off brake, a clutch, a tractive wheel, a tractive steel belt, a guiding wheel, a support and a limit switch. The input end of the clutch is connected with an output shaft of the power-off brake. An output shaft of the clutch is connected with the tractive wheel. Cross grooves are arranged on the cylindrical surface of the tractive wheel and meshed with cross grooves on the tractive steel belt. The limit switch is used for detecting contact between a counter weight and a buffering device. Under the normal working conditions, the clutch is locked, the output shaft and the input end of the clutch rotate synchronously, and the tractive steel belt and the tractive wheel rotate synchronously. When the counter weight is contacted with the buffering device, counter weight safety tongs work or power of a system is off, the output shaft of the clutch is separated from the input end of the clutch, power is cut, and a lift car is prevented from ascending continuously under traction of the tractive wheel. The elevator tractor and the steel belt of the elevator tractor improve tractive capacity, weight of the lift car and the counter weight is reduced under the same working conditions, and an effect of saving energy is achieved.

Description

technical field [0001] The invention relates to a traction machine in the field of elevators, in particular to an elevator traction machine and a steel belt for reducing the weight of a car and a counterweight. technical background [0002] Elevators used in high-rise buildings have higher requirements for the traction system of the elevator due to the high lifting speed and high traction capacity. The traction system mainly includes traction machine, traction wheel, traction wire rope or steel belt. The traditional traction system adopts traction wire rope traction. The cylindrical outer surface of the traction wheel has a circumferential groove that cooperates with the traction wire rope. During traction, the traction wire rope is wound in the circumferential groove of the traction wheel. The friction between the traction wheel and the traction wheel drives the movement of the car. In order to ensure sufficient traction capacity in this way, the size of the traction shea...

AI Technical Summary

Problems solved by technology

The traction machine can meet the normal function of the elevator, but the power cannot be cut off when the elevator counterweight is in contact with the buffer. It can only rely on the slipping of the traction sheave and the traction wire rope to prevent the car from continuing to rise, and the response speed is limited by the slipping speed. limitations, lack of stability

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