Traction power system for elevator

Abstract

The invention discloses a dragging power system for a lift. The dragging power system comprises dragging machines mounted in a liftway, a dragging steel wire rope, and counter weights arranged below the dragging machines, and is characterized in that one end of the dragging steel wire rope is fixed to a casing of one dragging machine, the other end of the dragging steel wire rope is fixed to the inner wall of the liftway, and the middle part of the dragging steel wire rope sequentially winds counter-weight wheels on the counter weights, driving wheels on the dragging machines and guide wheels at the bottom of a lift car; a pretightening mechanism is arranged on the outer side wall of the lift car, and used for tightening the dragging steel wire rope when the counter weights and the lift car do not apply an acting force on the dragging steel wire rope. According to the provided dragging power system for the lift, in the lift maintenance process, when the lift car and the counter weights do not apply an acting force on the dragging steel wire rope, the condition that the dragging steel wire rope is not loosed from the guide wheels can be ensured, and the risk that the dragging steel wire rope is loosed from the guide wheels can be avoided.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a traction power 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. As a special equipment, the safety of the elevator is directly related to the life safety of passengers. Therefore, the requirements for elevator repair and maintenance are high, that is, the frequency of maintenance is high, the service life of parts is short, and the replacement of vulnerable parts High frequency. And the elevator needs to lock the car and the counterweight during the maintenance process, so as to facilitate the loosening of the traction wire rope, and realize the i...

AI Technical Summary

Problems solved by technology

As a special equipment, the safety of the elevator is directly related to the life safety of passengers. Therefore, the requirements for elevator repair and maintenance are high, that is, the frequency of maintenance is high, the service life of parts is short, and the replacement of vulnerable parts High frequency

And the elevator needs to lock the car and the counterweight during the maintenance process, so as to facilitate the loosening of the traction wire rope, and realize the inspection or replacement of the guide wheels of each component. In the elevator maintenance of the prior art, the guide wheels After the maintenance or replacement is completed, when the traction wire rope is reset, there is a risk of misalignment between the traction wire rope and the guide wheel, that is, the traction wire rope slips from the guide wheel, thereby causing the shaft of the traction wire rope and the guide wheel to be stuck, or As a result, the rotating shaft of the guide wheel is constantly rubbed against the traction wire rope, resulting in premature damage to both parts

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