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High-speed elevator redundancy braking protection device and method

A brake protection and high-speed elevator technology, applied in the elevator field, can solve the problems of damaging the IGBT module of the inverter, large braking deceleration and small capacity of the elevator, and achieve the effect of avoiding damage

Inactive Publication Date: 2012-04-04
IFE ELEVATORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional elevator design, especially high-speed elevator design, generally uses the normally closed contact of the inverter output contactor as the star-sealing circuit, which easily causes several problems: 1. When the elevator stops in an emergency, the brake and star-sealing functions are simultaneously activated. 2. The normally closed contact of the inverter output contactor acts first, but the contact of the inverter connected to the traction machine is not disconnected, which may damage the inverter. IGBT module; 2. The capacity of the normally closed contact of the inverter output contactor is small. When abnormal braking occurs, the normally closed auxiliary contact is easy to burn out

Method used

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  • High-speed elevator redundancy braking protection device and method
  • High-speed elevator redundancy braking protection device and method
  • High-speed elevator redundancy braking protection device and method

Examples

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Embodiment 1

[0017] Such as figure 1 with figure 2 As shown, a high-speed elevator redundant braking protection device includes a contactor from the frequency converter to the traction machine, a star-off control circuit 1 and a main control board; the contactor from the frequency converter to the traction machine is electrically connected to the Described sealing star control circuit 1; Described sealing star control circuit 1 is provided with delay circuit board and large-capacity sealing star contactor, and described time delay circuit board controls and connects described sealing star contactor; Described main control board detects Connect the contacts of the star-off contactor; the contactor from the inverter to the traction machine is interlocked with the star-off contactor. The above-mentioned redundant braking protection device for high-speed elevators, in addition to braking the elevator with the double brakes of the traction machine, can also use the star-blocking function of t...

Embodiment 2

[0019] A high-speed elevator redundant braking protection method, which includes a contactor from the inverter to the traction machine, a star-off control circuit 1 and a main control board; the contactor from the inverter to the traction machine is electrically connected to the star-off Control circuit 1; the star sealing control circuit 1 is provided with a delay circuit board and a large-capacity star contactor, and the delay circuit board controls and connects the star contactor, which adopts a separate large-capacity seal The star contactor is used to design the star-sealing power circuit, avoiding the use of the contactor from the original inverter to the traction machine, and solving the problem of insufficient capacity of its normally closed contacts; the main control board detects the contactor connected to the star-sealing contactor point; using interlocking machinery, the contactor from the inverter to the traction machine is interlocked with the star-off contactor; ...

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Abstract

The invention relates to the technical field of elevators, in particular to a high-speed elevator redundancy braking protection device and a high-speed elevator redundancy braking protection method. The high-speed elevator redundancy braking protection device comprises a contactor from a frequency changer to a traction machine, a sealing control circuit and a main control board, wherein the contactor from the frequency changer to the traction machine is electrically connected with the sealing control circuit; the sealing control circuit is provided with a time delay circuit board and a large-capacity sealing contactor; the time delay circuit board is connected with the sealing contactor in a controlling manner; the main control board is connected with a contact of the sealing contactor in a detection manner; the contactor from the frequency changer to the traction machine is interlocked with the sealing contactor; and the traction machine brakes the elevator through a dual braking function, and a sealing function of a synchronous traction machine can also be used, so the braking of the elevator is subjected to redundancy protection, and overlarge deacceleration and damages to the frequency changer can be avoided.

Description

Technical field: [0001] The invention relates to the technical field of elevators, in particular to a high-speed elevator redundant braking protection device and method. Background technique: [0002] The so-called "seal star" function of the synchronous traction machine means that the traction machine is used as a three-phase AC permanent magnet generator. The unbalanced torque of the elevator mechanical system drives the traction wheel to run, and the generator absorbs mechanical energy and converts it into electrical energy. The closed loop formed by the "sealed star" wire or resistance will consume the electric energy. When the mechanical torque is balanced with the electromagnetic torque of the motor, the traction machine can run at a constant speed. Traditional elevator design, especially high-speed elevator design, generally uses the normally closed contact of the inverter output contactor as the star-sealing circuit, which easily causes several problems: 1. When the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00
Inventor 罗爱明吴开斌
Owner IFE ELEVATORS