Device and method for confirming position of lift car

Abstract

The invention relates to a device and a method for confirming the position of a lift car, which solve the technical problems of increasing of adjustment workload, increasing of cost and function failure in the prior art. The device comprises a lift car and a counter weight, wherein a compensation chain is connected between the lift car and the bottom of the counter weight; a weighing machine is mounted at the bottom of the lift car; the compensation chain is connected on the weighing machine; a processor for judging the position of the lift car according to the detected weight of the compensation chain is further arranged in the lift car; and the weighing machine is connected with the processor. The device has the advantages that: few parts are requested, the assembly structure is simple, and the device is low in cost and convenient to mount; the device can not be affected by the state of power or no power; the device is high in lift car position positioning speed; the device is free of adjustment and can be put in service after being mounted; the device is high in reliability and has no influence on normal operation of a lift even though the device is out of order due to equipment fault; and the device has low requirements on the parts and low requirement on the measurement accuracy.

Description

technical field [0001] The invention relates to an elevator floor positioning device, in particular to an elevator car position confirmation device with fast positioning speed, simple structure and low cost, and an elevator car position confirmation method. Background technique [0002] The position of the elevator car is of great significance to the normal operation of the elevator. At present, the most widely used is to use the rotary encoder to confirm the position of the elevator car. When the elevator position is lost due to emergency stop, system power failure, or slippage between the traction rope and the traction sheave, it is necessary to reconfirm the elevator position, otherwise the elevator will not be able to operate normally. [0003] At present, a common method for reconfirming the car position is to make the elevator run to the terminal station, and use the terminal station as the reference floor of the elevator. [0004] There are also some patents such as...

AI Technical Summary

Problems solved by technology

However, the method of installing an absolute encoder system on the speed limiter needs to add an absolute encoder on the basis of the existing elevator system, and its cost is relatively high; and when the elevator is powered off, the function of the encoder will fail

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