Automatic adjusting device for load weight of traction type elevator

Abstract

The invention relates to an automatic adjusting device for the load weight of a traction type elevator. The automatic adjusting device comprises a magnetic body, a coil set, a gravity sensor, a direct-current power source and a control unit. The magnetic body is arranged on an elevator counterweight, and the coil set is arranged around the outer ring of the moving trajectory of the elevator counterweight; the gravity sensor is arranged on a lift car to obtain a weight signal of the lift car; the direct-current power source is electrically connected with the coil set to supply electricity to the coil set so as to generate a magnetic field; and the control unit is electrically connected with the direct-current power source, the gravity sensor and a tractor. The gravity sensor obtains a weight signal of the lift car and transmits the signal to the control unit, and the control unit adjusts the current magnitude of the direct-current power source according to the weight signal and therefore adjusts the active force magnitude between the coil set magnetic field and a magnet magnetic field; and the control unit adjusts the current direction of the direct-current power source according to the rotating direction of the tractor so as to change the active force direction between the coil set magnetic field and the magnet magnetic field. The automatic adjusting device is simple in structure, and enables the elevator to work under the most electricity-saving working state, energy consumption is reduced, the energy problem is solved, and elevator running stability is improved.

Description

Technical field [0001] The invention relates to an automatic adjustment device for the counterweight of a traction elevator. Background technique [0002] The working mode of the traction elevator in the related art is that when the motor rotates, the steel wire rope is driven by the friction between the traction sheave groove and the traction wire rope, so that the car and the counterweight move relative to each other. Counterweight is an indispensable part of elevator traction drive. It also balances the weight of the car and part of the load, which can reduce the power loss of the motor. [0003] Generally, the weight of the counterweight is equal to the weight of the car plus half of the rated load of the elevator. However, the weight of the counterweight is constant, and the weight of the car varies with the passengers in the car, so the counterweight cannot be guaranteed The weight of is always equal to the weight of the car. The greater the difference between the counterwei...

AI Technical Summary

Problems solved by technology

[0003] Usually, the weight of the counterweight is equal to the weight of the car plus half of the rated load of the elevator, however, the weight of the counterweight is constant, and the weight of the car changes with the change of passengers in the car, so the counterweight cannot be guaranteed The weight of the car is always equal to the weight of the car. The greater the weight difference between the counterweight and the car, the greater the power consumption of the motor, which of course consumes a lot of electricity.

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