CN203402884U - Electromagnetic band-type brake control device - Google Patents
Electromagnetic band-type brake control device Download PDFInfo
- Publication number
- CN203402884U CN203402884U CN201320436239.4U CN201320436239U CN203402884U CN 203402884 U CN203402884 U CN 203402884U CN 201320436239 U CN201320436239 U CN 201320436239U CN 203402884 U CN203402884 U CN 203402884U
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- band
- type brake
- loop
- contactor
- direct current
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Abstract
The utility model provides an electromagnetic band-type brake control device, and belongs to the technical field of electromagnetic lifter equipment. The electromagnetic band-type brake control device is used for controlling electromagnetic band-type brakes used by electromagnetic lifters, crown blocks and other equipment. According to the technical scheme, a main circuit of the electromagnetic band-type brake control device is an alternating current/direct current rectifying circuit, a 380V alternating current input end of the main circuit is connected with a main lifting motor stator winding, a direct current output end of the main circuit is connected with two sets of band-type brake coils, a control circuit is composed of a transformer, a control rectifier bridge and a direct current contactor, a 380V input end of the transformer is connected with the main lifting motor stator winding, the output end of the transformer is connected with an alternating current input end of the control rectifier bridge, a direct current output side of the control rectifier bridge is connected with a coil of the direct current contactor in parallel, and a contact of the direct current contactor is connected to the main circuit. The electromagnetic band-type brake coils are rapid in motion, the lasting time of locked-rotor current is shortened when the main lifting motor is started, meanwhile, residual magnetism in the band-type brake coils is rapidly eliminated when the lifting operation is paused so that the electromagnetic band-type brake coils can be rapidly released, and the phenomenon of hook slipping caused by hysteresis of band-type brake motions is avoided.
Description
Technical field
The utility model relates to the electromagnetic brake control setup that the equipment such as a kind of magnetic hangs, overhead traveling crane are used, and belongs to electromagnetic lifter equipment technical field.
Background technology
In bar production process, it is last ring of production line of bar that finished product magnetic hangs, and finished product magnetic hangs the task of undertaking discharging, piling and entrucking, and its working stability is to ensure manufacturing line important step smoothly.It is to rely on speed reducer output shaft the braking that hoists of double embrace lock, the stability of assurance suspender that the master that at present the finished product magnetic of production line of bar hangs hoists.Former electromagnetic brake is used 220V direct current (DC), often occur coil obtain open when electric slower, and two nonsynchronous phenomenons of coil motion, cause like this motor to open car moment locked rotor current larger, when lifting action is frequent, cause winding temperature rise very fast, very easily cause the ground fault of rotor loop destruction of insulation.In the moment of band-type brake coil losing electricity, be by a flywheel diode and a resistance loop in series, electric current to be discharged in addition, but in use often still have remanent magnetism to exist, the hook phenomenon that causes like this slipping is serious.In order to adapt to the fast development of production, be necessary existing electromagnetic brake device to improve, realization obtains after electric and opens a sluice gate rapidly at band-type brake coil, locked rotor current time length is shortened, can after band-type brake coil losing electricity, can close rapidly lock again, make band-type brake skin embrace rapidly the output shaft of reductor, the hook phenomenon that prevents from slipping occurs.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electromagnetic brake control setup, this electromagnetic brake control setup has fast response characteristic, the time length of locked rotor current in the time of can shortening electric motor starting, also can eliminate rapidly the remanent magnetism in coil, prevent from slipping hook phenomenon while pausing hoisting.
The technical scheme solving the problems of the technologies described above is:
A kind of electromagnetic brake control setup, it is comprised of two band-type brake coils, major loop, control loops, major loop is alternating current-direct current rectifying circuit, and the 380V ac input end of major loop is connected with main lifting motor stator winding, and the DC output end of major loop is connected with two groups of band-type brake coils; Control loop is comprised of voltage transformer, control rectifier bridge, DC contactor and time relay, the 380V input end of voltage transformer is connected with main lifting motor stator winding, the 220V mouth of voltage transformer is connected with rectifier bridge ac input end, rectifier bridge direct current outgoing side parallel connection direct contactless coil, the main contact of DC contactor is serially connected in major loop.
Above-mentioned electromagnetic brake control setup, the alternating current-direct current rectifying circuit of described major loop is comprised of full-bridge rectification loop, resistance-capacitance absorption loop and two pizo-resistances, full-bridge rectification loop is comprised of two groups of rectifying half bridges, main lifting motor stator winding is received the ac input end in full-bridge rectification loop, the ac input end that is connected on major loop after resistance-capacitance absorption loop is in parallel with a pizo-resistance, another pizo-resistance is connected in parallel on DC output end.
Above-mentioned electromagnetic brake control setup, the voltage transformer of described control loop is 380V/220V band tap transformer, DC contactor is two, also has a time relay, the main lifting motor stator winding of 380V input termination of voltage transformer, the 220V two ends of voltage transformer are connected with control rectifier bridge ac input end, control rectifier bridge direct current outgoing side two DC contactor coils in parallel and time relay coil respectively, the time delay of time relay disconnects normally closed contact and a DC contactor coil is in series, the open contact of this DC contactor is connected with a rectifying half bridge of major loop, the open contact of another DC contactor is connected on the DC output end in major loop full-bridge rectification loop.
Above-mentioned electromagnetic brake control setup, described two band-type brake coils are same model, and the resistance of two band-type brake coils differs within the scope of 3-5 Europe, and the actuating length of two band-type brake armature of two band-type brake coil connections is identical.
The beneficial effects of the utility model are:
The two-phase 380V alternating current that power supply of the present utility model comes autonomous lifting motor stator loop to draw, guarantees that internal contacting brake control device obtains electric and motor stator and obtains and move the synchronism of moment when electric; Electromagnetic brake coil motion is rapid, and the time length of main lifting motor locked rotor current in start-up course shortens, and eliminates fast the remanent magnetism in band-type brake coil in lifting pause process simultaneously, and it is discharged fast, and that has avoided that band-type brake action lags behind slips hook phenomenon.The magnetic that the utility model is applicable to frequently hoist hangs, overhead traveling crane etc. adopts in the bont of band-type brake coil braking, has very large popularizing value.
Accompanying drawing explanation
Fig. 1 is electric functional-block diagram of the present utility model;
Fig. 2 is schematic circuit diagram of the present utility model.
In figure, mark is as follows: time delay normally closed contact ST-1, the pizo-resistance D1 of open contact L1-1, the DC contactor L2 of voltage transformer BY, DC contactor L1, DC contactor L1, the open contact L2-1 of DC contactor L2, time relay ST, time relay ST, pizo-resistance D2, rectifying half bridge ZB1, rectifying half bridge ZB2, control rectifier bridge ZL, resistance R, capacitor C.
The specific embodiment
The utility model is opened a sluice gate and closes the defect that lock lags behind for the control electromagnetic brake existing in traditional DC power control, by the control circuit of new design, shortens the opening time that lock was opened a sluice gate and closed to magnet coil.
In figure, show, the utility model is comprised of two band-type brake coils, major loop, control loops.
Two band-type brake coils that the utility model electromagnetic brake control setup is selected are same model, require resistance close, differ within the scope of 3-5 Europe, and use positioning screw debugging band-type brake armature, make their actuating length consistent.The power supply of electromagnetic brake does not re-use original 220V direct current circuit, the two-phase 380V alternating current that power supply comes autonomous lifting motor stator loop to draw, guarantee that band-type brake control box obtains electric and motor stator and obtains and move the synchronism of moment when electric, band-type brake control box is arranged on the side of main lifting motor.
In figure, show, major loop is alternating current-direct current rectifying circuit, and major loop is comprised of rectifying half bridge ZB1, rectifying half bridge ZB2, pizo-resistance D1, pizo-resistance D2, resistance R, capacitor C.Rectifying half bridge ZB1, rectifying half bridge ZB2 form full-bridge rectification loop, the 380V ac input end in full-bridge rectification loop is connected with main lifting motor stator winding, the DC output end in full-bridge rectification loop is connected with two groups of band-type brake coils, the ac input end that is connected on major loop after the resistance-capacitance absorption loop that resistance R and capacitor C are composed in series is in parallel with a pizo-resistance D1, another pizo-resistance D2 is connected in parallel on the DC output end of major loop.
In figure, show, control loop is comprised of 380V/220V band tap transformer BY, control rectifier bridge ZL, DC contactor L1, DC contactor L2, time relay ST.On the main lifting motor stator winding of 380V input termination of voltage transformer BY, the 220V two ends of voltage transformer BY are connected with control rectifier bridge ZL ac input end, control rectifier bridge ZL direct current outgoing side parallel connection direct contactless switch L1 coil respectively, DC contactor L2 coil, time relay ST coil, the time delay of time relay ST disconnects normally closed contact ST-1 and DC contactor L1 coil is in series, the open contact L1-1 of DC contactor L1 connects with a rectifying half bridge ZB2 of major loop, the open contact L2-1 of DC contactor L2 is connected on the DC output end in major loop full-bridge rectification loop.
Working process of the present utility model is as follows:
When main lifting motor obtains electric moment, control loop DC contactor L1, DC contactor L2 adhesive simultaneously in control box, time relay ST obtains electric, at this moment major loop 380V alternating current is directly added to direct current full voltage on direct current band-type brake coil in parallel after full-bridge rectification, there is larger exciting current by band-type brake coil, band-type brake armature is opened rapidly, and electric motor starting electric current significantly reduces, and starts fast.After 0.5 second, the time delay normally closed contact ST-1 of time relay ST opens; DC contactor L1 coil is disconnected; the open contact L1-1 of DC contactor L1 opens simultaneously; major loop is cut to half wave rectification loop by full-bridge rectification loop like this; play the object that current limliting reduces coil temperature rise; the band-type brake of lower voltage protection simultaneously coil can not pass through high potential for a long time, thereby guarantees that coil temperature rise can be not too high.The interchange input side of major loop is incorporated to pizo-resistance D1, plays the object of deboost.The direct current outgoing side of major loop is incorporated to pizo-resistance D2, guarantees that after dead electricity, band-type brake coil can discharge electric residue by pizo-resistance D2 fast, has utilized nonlinear characteristic and the avalanche effect of pizo-resistance D2, makes armature can hightail yoke.
Claims (4)
1. an electromagnetic brake control setup, it is characterized in that: it is comprised of two band-type brake coils, major loop, control loops, major loop is alternating current-direct current rectifying circuit, the 380V ac input end of major loop is connected with main lifting motor stator winding, and the DC output end of major loop is connected with two groups of band-type brake coils; Control loop is comprised of voltage transformer, control rectifier bridge, time relay and DC contactor, the 380V input end of voltage transformer is connected with main lifting motor stator winding, the 220V mouth of voltage transformer is connected with rectifier bridge ac input end, rectifier bridge direct current outgoing side parallel connection direct contactless coil and time relay coil, the main contact of DC contactor is serially connected in major loop.
2. electromagnetic brake control setup according to claim 1, it is characterized in that: the alternating current-direct current rectifying circuit of described major loop is comprised of full-bridge rectification loop, resistance-capacitance absorption loop and two pizo-resistances, full-bridge rectification loop is comprised of two groups of rectifying half bridges, main lifting motor stator winding is received the ac input end in full-bridge rectification loop, the ac input end that is connected on major loop after resistance-capacitance absorption loop is in parallel with a pizo-resistance, another pizo-resistance is connected in parallel on DC output end.
3. electromagnetic brake control setup according to claim 2, it is characterized in that: the voltage transformer of described control loop is 380V/220V band tap transformer, DC contactor is two, also has a time relay, the main lifting motor stator winding of 380V input termination of voltage transformer, the 220V two ends of voltage transformer are connected with control rectifier bridge ac input end, control rectifier bridge direct current outgoing side two DC contactor coils in parallel and time relay coil respectively, the time delay of time relay disconnects normally closed contact and one of them DC contactor coil is in series, the open contact of this DC contactor is connected with a rectifying half bridge of major loop, the open contact of another DC contactor is connected on the DC output end in major loop full-bridge rectification loop.
4. electromagnetic brake control setup according to claim 3, is characterized in that: described two band-type brake coils are same model, and the resistance of two band-type brake coils differs within the scope of 3-5 Europe, and the actuating length of two band-type brake armature of two band-type brake coil connections is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320436239.4U CN203402884U (en) | 2013-07-22 | 2013-07-22 | Electromagnetic band-type brake control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320436239.4U CN203402884U (en) | 2013-07-22 | 2013-07-22 | Electromagnetic band-type brake control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203402884U true CN203402884U (en) | 2014-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320436239.4U Expired - Fee Related CN203402884U (en) | 2013-07-22 | 2013-07-22 | Electromagnetic band-type brake control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203402884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104210982A (en) * | 2014-08-22 | 2014-12-17 | 上海吉亿电机有限公司 | Elevator brake control system and control method |
| CN115108489A (en) * | 2022-07-15 | 2022-09-27 | 苏州汇川控制技术有限公司 | Band-type brake control method, electronic equipment and storage medium |
-
2013
- 2013-07-22 CN CN201320436239.4U patent/CN203402884U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104210982A (en) * | 2014-08-22 | 2014-12-17 | 上海吉亿电机有限公司 | Elevator brake control system and control method |
| CN115108489A (en) * | 2022-07-15 | 2022-09-27 | 苏州汇川控制技术有限公司 | Band-type brake control method, electronic equipment and storage medium |
| CN115108489B (en) * | 2022-07-15 | 2024-02-27 | 苏州汇川控制技术有限公司 | Band-type brake control method, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20150722 |
|
| EXPY | Termination of patent right or utility model |