CN103441710B - A kind of asphalt blending station vibratory sieve dynamic braking device and braking method - Google Patents
A kind of asphalt blending station vibratory sieve dynamic braking device and braking method Download PDFInfo
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- CN103441710B CN103441710B CN201310408914.7A CN201310408914A CN103441710B CN 103441710 B CN103441710 B CN 103441710B CN 201310408914 A CN201310408914 A CN 201310408914A CN 103441710 B CN103441710 B CN 103441710B
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Abstract
The invention belongs to the braking technology field of motor, be related specifically to be applicable to the braking technology field of asphalt mixing plant vibratory sieve motor.According to the feature of bituminous mixing plant vibratory sieve, use timing controller that access negative-phase sequence power supply moment and reversing braking time are accurately controlled, access based on the time or excision braking power.Compared with prior art, the resonance during the present invention can eliminate vibratory sieve stopping process, it is achieved vibratory sieve and the steady shutdown of main building equipment; extend vibratory sieve and the service life of main building equipment; downtime reduces more than 60%, and beneficially equipment puts into production again, improves production efficiency.
Description
Technical field
The invention belongs to the braking technology field of motor, be related specifically to be applicable to asphalt mixing plant vibration
The braking technology field of sieve motor.
Background technology
Vibratory sieve is the fine sieve separating device of asphalt mixer plant, threephase asynchronous drag, and it runs and braking
Performance directly affects the quality of whole asphalt mixing plant.What asphalt mixing plant vibratory sieve was directly cut off the electricity supply freely stops
During machine, due to the resonant interaction of vibratory sieve, making stopping process unstable, during resonance, amplitude increases, and even causes
Main building rocks, and shortens the service life of vibratory sieve, causes the danger such as hot aggregate storage bin cracking and main building deformation of timbering on main building
Evil；The downtime simultaneously making vibratory sieve extends, and the stand-by period being again started up equipment is longer.In order to avoid blending station
The generation of resonance in vibratory sieve stopping process, reduces amplitude when vibratory sieve is shut down and shortens downtime, and it is right to reduce
Vibratory sieve motor and the impact of machine driven system, extend vibratory sieve and the service life of blending station main building miscellaneous equipment,
Need to use new brake apparatus and braking method.
Summary of the invention
It is an object of the invention to provide a kind of asphalt blending station vibratory sieve dynamic braking device and braking method, make blending station
Stopping process eliminates resonance, reaches steady and quick shutdown, reduce and vibratory sieve motor and machine driven system are rushed
Hit, thus extend vibratory sieve and the service life of other equipment of main building.
In order to reach the purpose of the present invention, the present invention by the following technical solutions:
A kind of asphalt blending station vibratory sieve dynamic braking device includes signal source, breaker, contactor and timing controller；
Signal source provides run signal and brake signal, and contactor includes running contactor and braking contactor；Timing controller
Select after receiving the signal of signal source to be switched on or switched off operation contactor or braking contactor；Breaker respectively with operation
Contactor and braking contactor connect；Described timing controller can carry out reversing braking and start timing, running under braking meter
Time and switch on and off operation contactor and braking contactor.
The braking method of a kind of asphalt blending station vibratory sieve dynamic braking device, comprises the following steps:
Step 1, wait and receive the command signal that signal source issues, enter step 2；
Whether step 2, decision instruction are vibratory sieve motor operation signal, the most then enter step 3；If the most again
Return to step 2；
Step 3, timing controller receive run signal, and timing controller output runs control signal, enters step
4；
Step 4, timing controller connect running control circuit, drive operation controller work, connect main circuit, for
Vibratory sieve motor provides and runs power supply, enters step 5；
Whether step 5, decision instruction are vibratory sieve motor braking signal, if entering step 6, come back to if not
Step 5；
After step 6, timing controller receive brake signal, cut off and run control signal output, cut off and run power supply,
Meanwhile, timing controller starts reversing braking and starts timing, it is judged that whether timing time reaches predetermined reversing braking is opened
The dynamic time, if timing time reaches the setting time, enter step 7；If timing time is not reaching to the setting time, weight
New return step 6；
Step 7, timing controller output brake control signal, enters step 8；
Step 8, timing controller connect brake control circuit, connect braking contactor, and braking contactor works,
Plug braking power supply is provided for motor；Meanwhile, timing controller proceeds by running under braking timing, enters
Enter step 9；
Step 9, judge whether the time of running under braking timing reaches the predetermined running under braking time, if so, enter
Step 10；If it is not, return to step 9；
Step 10, timing controller stop output brake control signal, enter step 11；
Step 11, brake control circuit quit work, and braking contactor disconnects, motor freedom of entry stopped status.
The invention have the benefit that
(1) use this device to be braked, it is possible to eliminate the covibration in vibratory sieve stopping process, reduce and shut down
During amplitude, it is achieved steadily shut down, thus reduce in braking procedure and vibratory sieve and other equipment of main building are rushed
Hit, extend vibratory sieve and the service life of main building equipment.
(2) after vibratory sieve motor carries out reversing braking, it is possible to shorten the downtime of equipment, reduce 60% downtime
Above, beneficially equipment puts into production again, improves production efficiency.
(3) reversing braking is connected in brake apparatus time delay, it is to avoid motor connects negative-phase sequence power supply in higher rotation speed, from
And reduce reversing braking electric current, it is prevented effectively from and motor and machine driven system are crossed large impact, extend it and use the longevity
Life.
Accompanying drawing explanation
Fig. 1 is the structure composition diagram of brake apparatus of the present invention；
Fig. 2 is the flow chart of braking method of the present invention.
Detailed description of the invention
As it is shown in figure 1, asphalt blending station vibratory sieve dynamic braking device based on time control includes breaker, contact
Device, signal source, timing controller；Signal source provides vibratory sieve motor running signal and brake signal；Contactor bag
Include operation contactor and braking contactor；Timing controller selects to be switched on or switched off after receiving the control signal of signal source
Running contactor or braking contactor, breaker is connected with operation contactor and braking contactor respectively, to vibratory sieve electricity
The startup of machine, run and brake and shield.Running contactor and braking contactor, respectively vibratory sieve motor carries
For properly functioning power supply and reversing braking power supply.
Described timing controller is the core of whole device, and Main Function is that reversing braking starts timing, running under braking meter
Time and switch on and off operation contactor and braking contactor.Timing controller can be the time relay, PLC with
And other has timing and controls the device of function.Signal source can be knob, button, stacked switch, various switch
Combination, PC control interface button, PLC or the output signal of other smart machine.Breaker can be electronic
Machine definite purpose circuit breaker, normal circuit breaker add electrothermal relay, fuse and other electric motor protective device.
This brake apparatus operation principle is as follows: the signal source of this device provides vibratory sieve run signal and brake signal,
When this device receives the run signal of signal source, device drives and runs contactor adhesive, provides fortune for vibratory sieve motor
Row power supply, vibratory sieve is in running status；If timing controller receives the brake signal of signal source, cut off vibration
Sieve motor starts timing while running power supply, and after the time of clocking arrives the setting time, timing controller drives reversal connection system
Dynamic contactor, motor enters reversing braking state, and timing controller starts braking time timing simultaneously, in reversal connection system
Under dynamic state, motor speed declines rapidly, and after the running under braking time arrives setting value, timing controller cuts off vibration
Sieve motor brake power supply, motor freedom of entry stopped status, last motor is under the dragging of machine driven system
Stop operating.
Fig. 2 is the braking method flow chart of asphalt blending station vibratory sieve brake apparatus.As in figure 2 it is shown, include as follows
Step:
Step 1, wait and receive the command signal that signal source issues, enter step 2；
Whether step 2, decision instruction are vibratory sieve motor operation signal, the most then enter step 3；If the most again
Return to step 2；
Step 3, timing controller receive run signal, and timing controller output runs control signal, enters step
4；
Step 4, timing controller connect running control circuit, drive operation controller work, connect main circuit, for
Vibratory sieve motor provides and runs power supply, enters step 5；
Whether step 5, decision instruction are vibratory sieve motor braking signal, if entering step 6, come back to if not
Step 5；
After step 6, timing controller receive brake signal, cut off and run control signal output, cut off and run power supply,
Meanwhile, timing controller starts reversing braking and starts timing, it is judged that whether timing time reaches predetermined reversal connection
The brake actuating time, if timing time reaches the setting time, enter step 7；If timing time is not reaching to set
Fix time, return to step 6；
Step 7, timing controller output brake control signal, enters step 8；
Step 8, timing controller connect brake control circuit, connect braking contactor, and braking contactor works, for
Motor provides plug braking power supply；Meanwhile, timing controller proceeds by running under braking timing,
Enter step 9；
Step 9, judge whether the time of running under braking timing reaches the predetermined running under braking time, if so, enter step
Rapid 10；If it is not, return to step 9；
Step 10, timing controller stop output brake control signal, enter step 11；
Step 11, brake control circuit quit work, and braking contactor disconnects, motor freedom of entry stopped status.
Last motor stops operating under the dragging of machine driven system.
If connect braking power when motor failure, the now direction of rotation of rotor and stator rotating excitation field
In opposite direction, stalling current is 2 times of full voltage starting electric current, causes excessive shock motor and transmission system.This
Braking method connects braking power after cutting off operation power supply a period of time again, it is possible to decrease stalling current, reduces impact,
Extension device service life.But the running under braking time is too short, and braking effect is poor, running under braking set of time is long,
After end of braking, motor reverse starting may be caused.The time with excision braking power of accessing is mainly according to vibratory sieve
Model, performance and motor model, intrinsic mechanical property determine, for the equipment of different model, run spy according to it
Levy and estimate reversing braking startup time and running under braking time, and through test of many times, measure corresponding stalling current,
Vibratory sieve amplitude and motor speed, so that it is determined that the accurate scheduled time.
For 3000 type asphalt blending station vibratory sieves, 8-12mm double-amplitude, two 15KW motors drive, use
Belt transmissioning mode, vibratory sieve is under 380V voltage during no-load running, and current of electric is 19A, during motor braking,
According to load torque, time when motor speed drops to the 1/2 of rated speed formulates the startup time as reversal connection, and
With rotational speed meters measured motor rotating speed timing, obtain that estimate reversal connection to formulate the startup time be 6.5s, after accessing braking power,
Motor is under the effect of load torque and direction electromagnetic torque, and rotating speed declines rapidly, can estimate the running under braking time and be
1s.On the basis of the estimated time, test of many times the most backward in units of 0.1s, obtain optimal ageing
It is 7s for the reversal connection formulation startup time, running under braking time 1.3s.Under this ageing, can effectively eliminate and stop
Covibration during machine, is down to 18s by 49s when freely shutting down downtime.
Above are only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, all profits
With this design, the present invention is carried out substantial change, the behavior invading scope all should be belonged to.
Claims (6)
1. an asphalt blending station vibratory sieve dynamic braking device, it is characterised in that: this device includes
Signal source, breaker, contactor and timing controller；Signal source provides run signal and braking letter
Number, contactor includes running contactor and braking contactor；Timing controller receives signal source
Select after signal to be switched on or switched off operation contactor or braking contactor；Breaker connects with operation respectively
Tentaculum and braking contactor connect；Described timing controller can carry out reversing braking start timing,
Running under braking timing and switch on and off operation contactor and braking contactor；And
Described timing controller be provided with access braking power time with excision braking power time
Between；
The time of the time of described access braking power and described excision braking power is in the following way
Determine: according to model, performance and the motor model of vibratory sieve, intrinsic mechanical property, and combine
The operation characteristic of equipment, determines and estimates the time accessing braking power and estimate excision braking power
Time；Based on the described time estimating the time accessing braking power and estimate excision braking power,
Through test of many times, measure corresponding stalling current, vibratory sieve amplitude and motor speed, determine
The time of described access braking power and the time of described excision braking power.
Asphalt blending station vibratory sieve dynamic braking device the most according to claim 1, its feature
Be: timing controller can be the time relay or programmable controller PLC and other have
Timing and the device controlling function.
Asphalt blending station vibratory sieve dynamic braking device the most according to claim 1 and 2, its
Be characterised by: signal source can be knob, button, stacked switch, programmable controller PLC or
One of output signal of other smart machine.
4. the braking of an asphalt blending station vibratory sieve dynamic braking device as claimed in claim 1
Method, comprises the steps:
Step 1, wait and receive the command signal that signal source issues, enter step 2；
Whether step 2, decision instruction are vibratory sieve motor operation signal, the most then enter step 3；
If otherwise coming back to step 2；
Step 3, timing controller receive run signal, and timing controller output runs control signal,
Enter step 4；
Step 4, timing controller connect running control circuit, drive operation controller work, connect
Main circuit, provides for vibratory sieve motor and runs power supply, enter step 5；
Whether step 5, decision instruction are vibratory sieve motor braking signal, if entering step 6, if
No come back to step 5；
After step 6, timing controller receive brake signal, cut off and run control signal output, cut
The disconnected power supply that runs, meanwhile, timing controller starts reversing braking and starts timing, it is judged that timing time
The reversing braking whether reaching predetermined starts the time, if timing time reaches the setting time, enters step
Rapid 7；If timing time is not reaching to the setting time, return to step 6；
Step 7, timing controller output brake control signal, enters step 8；
Step 8, timing controller connect brake control circuit, connect braking contactor, brake contact
Device works, and provides plug braking power supply for motor；Meanwhile, timing controller start into
Row running under braking timing, enters step 9；
Step 9, judge whether the time of running under braking timing reaches the predetermined running under braking time, if
It is to enter step 10；If it is not, return to step 9；
Step 10, timing controller stop output brake control signal, enter step 11；
Step 11, brake control circuit quit work, and braking contactor disconnects, and motor enters certainly
By stopped status.
5. braking method as claimed in claim 4, described predetermined reversing braking starts the time and is
6.5-7.2s。
6. the braking method as described in claim 4 or 5, the described predetermined running under braking time
For 1-1.5s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408914.7A CN103441710B (en) | 2013-09-10 | 2013-09-10 | A kind of asphalt blending station vibratory sieve dynamic braking device and braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408914.7A CN103441710B (en) | 2013-09-10 | 2013-09-10 | A kind of asphalt blending station vibratory sieve dynamic braking device and braking method |
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| CN103441710A CN103441710A (en) | 2013-12-11 |
| CN103441710B true CN103441710B (en) | 2016-08-17 |
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| CN108267649B (en) * | 2016-12-30 | 2021-04-27 | 丹佛斯（天津）有限公司 | Compressor phase sequence detection method and device and start control method and device thereof |
| CN107402536A (en) * | 2017-08-07 | 2017-11-28 | 黔西南州启腾矿山设备有限公司 | A kind of mixed mud proportioning machine time control circuit |
| EP3875173A1 (en) | 2020-03-04 | 2021-09-08 | Bühler AG | Feed or foodstuff mill |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202079028U (en) * | 2011-05-18 | 2011-12-21 | 成都大宏立机器制造有限公司 | Vibrating screen counter-braking device |
| CN202732804U (en) * | 2012-08-20 | 2013-02-13 | 同济大学 | Intelligent brake capable of realizing smooth braking |
| CN203445817U (en) * | 2013-09-10 | 2014-02-19 | 徐工集团工程机械股份有限公司道路机械分公司 | Asphalt mixing plant vibrating screen motor brake device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989586A (en) * | 1982-11-11 | 1984-05-23 | Toray Eng Co Ltd | Roller unit |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202079028U (en) * | 2011-05-18 | 2011-12-21 | 成都大宏立机器制造有限公司 | Vibrating screen counter-braking device |
| CN202732804U (en) * | 2012-08-20 | 2013-02-13 | 同济大学 | Intelligent brake capable of realizing smooth braking |
| CN203445817U (en) * | 2013-09-10 | 2014-02-19 | 徐工集团工程机械股份有限公司道路机械分公司 | Asphalt mixing plant vibrating screen motor brake device |
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Effective date of registration: 20180918 Address after: 221000 10 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Xuzhou, Jiangsu Patentee after: Xuzhou Xugong Maintenance Machinery Co., Ltd. Address before: 221004 1 Tao Shan Road, Xuzhou Economic Development Zone, Jiangsu Patentee before: XCMG Engineering Machinery Co., Ltd., Road Machinery Branch |