CN205709660U

CN205709660U - A kind of drive circuit of elevator brake

Info

Publication number: CN205709660U
Application number: CN201620511717.7U
Authority: CN
Inventors: 张昱晨; 张陈
Original assignee: SUZHOU TAILING ELEVATOR CO Ltd
Current assignee: SUZHOU TAILING ELEVATOR CO Ltd
Priority date: 2016-05-31
Filing date: 2016-05-31
Publication date: 2016-11-23
Anticipated expiration: 2026-05-31

Abstract

This utility model provides the drive circuit of a kind of elevator brake, the IGCT exported including mains-supplied unit, the rectification conversion full bridge rectifier that export to unidirectional current of civil power and half-wave rectifying circuit and switching full-bridge output and half-wave, control to connect the outfan being provided with single-chip microcomputer, full bridge rectifier and half-wave rectifying circuit of IGCT all as driving power supply to be connected with brake.Switched full-bridge output or half-wave output, switching the first turn on thyristors when brake starts selecting rectification circuit by the break-make of Single-chip Controlling two IGCT, select full bridge rectifier rectification output full-bridge voltage, strong excitatory startup brake；Switching the second turn on thyristors after brake startup, disconnects the first IGCT, selects half-wave rectifying circuit rectification output half-wave voltage, and low current maintains, it is to avoid the heat radiation pressure of overheated increase switch board；Using Single-chip Controlling rectification output switching, precision is high, and transient response is fast, it is achieved the high frequency of brake starts.

Description

A kind of drive circuit of elevator brake

Technical field

This utility model belongs to elevator technology field, is specifically related to the drive circuit of a kind of elevator brake.

Background technology

The power frequency electric of alternation i.e. civil power need the rectified DC excitation that is converted into start brake, and brake is starting Time need a stronger magnetic field to be drawn through by brake armature, armature adsorbs the maintenance of its attracting state after release and is not required to Magnetic field that will be the strongest, the corresponding big electric current of high-intensity magnetic field and golf calorific value, increase the heat radiation pressure of brake switch board.

Summary of the invention

For solving above-mentioned technical problem, this utility model provides the drive circuit of a kind of elevator brake, it is achieved braking The strong excitatory startup of device, low current maintains, the most overheated.

For reaching above-mentioned purpose, the technical solution of the utility model is as follows: the drive circuit of a kind of elevator brake, including Mains-supplied unit, it is characterised in that: it also includes that transformator T, rectification conversion transformer outfan alternating current are defeated to unidirectional current The full bridge rectifier gone out and half-wave rectifying circuit and switching full-bridge export and the IGCT of half-wave output, control to connect institute Stating the single-chip microcomputer that is provided with of IGCT, the outfan of full bridge rectifier and half-wave rectifying circuit is all as driving power supply and described system Dynamic device connects.

In one preferred embodiment of this utility model, farther including described IGCT and have two, respectively first is brilliant Brake tube VT1 and the second IGCT VT2, the first IGCT VT1 are connected with full bridge rectifier, and the second IGCT VT2 is whole with half-wave Current circuit connects, and described Single-chip Controlling connects the gate pole of two IGCTs, two IGCT alternate conduction of Single-chip Controlling.

In one preferred embodiment of this utility model, farther include described full bridge rectifier and there are four rectification two poles Pipe VD1, VD2, VD3, VD4, described half-wave rectifying circuit has a commutation diode VD5, the positive pole of commutation diode VD5 with The negative electrode of the second IGCT VT2 connects, and commutation diode VD1, the negative pole of both commutation diode VD2 form node A after connecting, The cathode connecting nodes A of the first IGCT VT1.

In one preferred embodiment of this utility model, farther including described first IGCT VT1 is that bidirectional triode thyristor is brilliant Brake tube, described second IGCT VT2 is one-way SCR IGCT.

In one preferred embodiment of this utility model, the model farther including described single-chip microcomputer is STM32.

The beneficial effects of the utility model are: 1, the drive circuit of a kind of elevator brake of the present utility model, by monolithic Machine controls the break-make of two IGCTs and switches full-bridge output or half-wave output, switching when brake starts selecting rectification circuit First turn on thyristors, selects full bridge rectifier rectification output full-bridge voltage, strong excitatory startup brake；After brake starts Switching the second turn on thyristors, disconnects the first IGCT, selects half-wave rectifying circuit rectification output half-wave voltage, and low current is tieed up Hold, it is to avoid the heat radiation pressure of overheated increase switch board.

2, using Single-chip Controlling rectification output switching, precision is high, and transient response is fast, it is achieved the high frequency of brake starts.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme in this utility model embodiment technology, embodiment technology will be retouched below In stating, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to These accompanying drawings obtain other accompanying drawing.

Fig. 1 is the circuit theory diagrams of this utility model preferred embodiment.

Wherein: 10-mains-supplied unit, 20-full bridge rectifier, 30-half-wave rectifying circuit, 40-single-chip microcomputer, 50-system Dynamic device

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.

Embodiment

As it is shown in figure 1, the present embodiment discloses the drive circuit of a kind of elevator brake, including mains-supplied unit 10, transformator T, full bridge rectifier 20, half-wave rectifying circuit the 30, first IGCT VT1, the second IGCT VT2, single-chip microcomputer 40 With brake 50.

Wherein, full bridge rectifier 20 is conventional circuit structure, have four commutation diode VD1, VD2, VD3, VD4, the negative pole of commutation diode VD1 and commutation diode VD2 forms node A, the negative electrode of the first IGCT VT1 after connecting The gate pole connecting node A, the first IGCT VT1 connects single-chip microcomputer 40, single-chip microcomputer 40 control the break-make of the first IGCT VT1； Half-wave rectifying circuit 30 is conventional circuit structure, has a commutation diode VD5, the positive pole of commutation diode VD5 and the The negative electrode of two IGCT VT2 connects, and the gate pole of the second IGCT VT2 connects single-chip microcomputer 40, single-chip microcomputer 40 control the second brilliant lock The break-make of pipe VT2.The 220V alternating current of mains-supplied unit 10 is carried out rectification, the direct current of output 180 by full bridge rectifier 20 Electricity, driving power supply when starting as brake 50 uses.The 220V of mains-supplied unit 10 is exchanged by half-wave rectifying circuit 30 Electricity carries out rectification, the unidirectional current of output 90V, and the driving power supply after starting as brake 50 uses.

Drive circuit of the present utility model, the preferred STM32 of model of single-chip microcomputer 40, it controls the first IGCT VT1 and Two IGCT VT2 alternate conduction.When drive circuit starts, single-chip microcomputer 40 controls switching the first IGCT VT1 conducting, now drives Circuit is operated in full-bridge rectification pattern, rectification output 180V DC voltage, strong excitatory startup brake 50；After brake 50 starts Single-chip microcomputer 40 switching the second IGCT VT2 turns on, and disconnects the first IGCT VT1, and now drive circuit works is at halfwave rectifier mould Formula, rectification output 90V DC voltage, output voltage declines, and low current maintains, it is to avoid the heat radiation pressure of overheated increase switch board. Separately, selecting single-chip microcomputer 40 to control rectification output switching, precision is high, and transient response is fast, it is achieved the high frequency of brake starts.

Described first IGCT VT1 is bidirectional triode thyristor IGCT, and described second IGCT VT2 is one-way SCR crystalline substance lock Pipe.

Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this practicality new Type.Multiple amendment to these embodiments will be apparent from for those skilled in the art, is determined herein The General Principle of justice can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims

1. a drive circuit for elevator brake, including mains-supplied unit, it is characterised in that: its also include transformator (T), Full bridge rectifier that rectification conversion transformer outfan alternating current exports to unidirectional current and half-wave rectifying circuit and switching are complete Bridge output and the IGCT of half-wave output, control to connect described IGCT to be provided with single-chip microcomputer, full bridge rectifier and half-wave whole The outfan of current circuit is all as driving power supply to be connected with described brake.

The drive circuit of a kind of elevator brake the most according to claim 1, it is characterised in that: described IGCT has two Individual, the respectively first IGCT (VT1) and the second IGCT (VT2), the first IGCT (VT1) is connected with full bridge rectifier, Second IGCT (VT2) is connected with half-wave rectifying circuit, and described Single-chip Controlling connects the gate pole of two IGCTs, Single-chip Controlling Two IGCT alternate conduction.

The drive circuit of a kind of elevator brake the most according to claim 1 and 2, it is characterised in that: described full-bridge rectification Circuit has four commutation diodes (VD1, VD2, VD3, VD4), and described half-wave rectifying circuit has a commutation diode (VD5), the positive pole of commutation diode (VD5) and the negative electrode of the second IGCT (VT2) connect, commutation diode (VD1), rectification two Both negative poles of pole pipe (VD2) form node A, the cathode connecting nodes A of the first IGCT (VT1) after connecting.

The drive circuit of a kind of elevator brake the most according to claim 3, it is characterised in that: described first IGCT (VT1) being bidirectional triode thyristor IGCT, described second IGCT (VT2) is one-way SCR IGCT.

The drive circuit of a kind of elevator brake the most according to claim 3, it is characterised in that: the model of described single-chip microcomputer For STM32.