Elevator pre-starting method

Abstract

The invention discloses an elevator pre-starting method. The method comprises the following steps of: S1, an elevator control device is used for receiving an equidirectional call or command and outputting a door closing signal to a door machine; S2, a door lock bypass device is short-circuited with a door lock; S3, a main contactor begins to absorb, and a motor drive device begins to carry out pre-excitation on an elevator drive host so as to enter a zero servo state; and S4, the elevator control device drives a contracting brake contactor, a contracting brake opens, and an elevator begins to normally work. In the invention, the door lock bypass device is short-circuited with the door lock, so that the main contactor absorbs. Before the door of the elevator is closed, the motor drive device of the control device for the elevator drive host begins to carry out pre-excitation on the elevator drive host. Once, the door is completely closed, the elevator drive host can output torque, and the elevator can be immediately started. The starting delay time of the elevator is greatly shortened, and the efficiency of the elevator is improved.

Description

technical field [0001] The invention relates to an elevator starting method, in particular to an elevator pre-starting method. Background technique [0002] Elevator is a kind of vertical elevator powered by electric motor, equipped with box-shaped gondola, which is used for multi-storey buildings to take people or carry goods. Modern elevators are mainly composed of traction machines (winches), guide rails, counterweight devices, safety devices (such as speed limiters, safety gears and buffers, etc.), signal control systems, cars and hall doors. These parts are respectively installed in the hoistway and machine room of the building. Steel wire rope friction transmission is usually used. The wire rope goes around the traction sheave, and the two ends are respectively connected to the car and the counterweight. The motor drives the traction sheave to lift the car up and down. [0003] According to the speed, elevators can be divided into low-speed elevators (below 1 m / s), f...

AI Technical Summary

Problems solved by technology

[0006] 1. The power of the elevator drive main engine of the high-speed elevator is relatively large, and it takes a certain amount of time from the start of excitation to the moment when the torque can be given when starting.

[0007] 2. The contact load of the main contactor used by the high-speed elevator is relatively large, so the relative action time is relatively long

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