A traction system for elevators

Abstract

The invention discloses a traction system for an elevator. The traction system comprises a tractor, a traction steel wire rope and a counterweight, and is characterized in that a counter weight assembly is arranged on the counterweight; a weight adjusting mechanism is arranged in the liftway; an annular groove is formed in the peripheral wall of a guide wheel; at least three clamping grooves formed along the radial direction of the guide wheel in an internally tangent manner are formed in the groove bottom position of the annular groove; a clamping block is arranged in each of the clamping grooves; when the clamping blocks are mounted in the clamping grooves, the upper end faces, which deviate from the axis of the guide wheel, of the clamping blocks are exposed outside the clamping grooves and positioned in the annular groove, and the traction steel wire rope is pressed against or separated from the upper end faces of the clamping blocks along with rotation of the guide wheel. According to the traction system for the elevator provided by the invention, the weight difference of the elevator car and the counterweight can be adjusted when the weight of the elevator car changes, so the load of the tractor is reduced, and the energy consumption of the tractor is reduced. Meanwhile, the upper limit of load capacity of the elevator car is improved on the basis of equal output power of the tractor.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a traction system for elevators. Background technique [0002] The lifting process of the elevator is to wind the driving wheel of the traction machine, the guide wheel of the car and the counterweight wheel of the counterweight in sequence through the traction wire rope, so as to drive the movement of the car through the friction between the driving wheel and the traction wire rope. lift. The magnitude of friction between the driving wheel of the traction machine and the traction wire rope, that is, the magnitude of the traction force that the traction machine needs to provide, depends on the load of the car and the weight difference between the counterweights. Smaller requires less traction. In the actual application process, the load inside the car is constantly changing as people enter and exit each floor of the elevator. Therefore, in the prior art, the weight of the cou...

AI Technical Summary

Problems solved by technology

It is not difficult to see that, in the elevator of the above-mentioned prior art, the load on the driving wheel of the traction machine is relatively large regardless of whether the car is in a full-load or no-load state. The output power and energy consumption are high, and at the same time, the large traction requirement also limits the car load of the traction machine at the same output power

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