CN103441710A - Brake device and brake method for vibratory screen motor of asphalt mixing station - Google Patents
Brake device and brake method for vibratory screen motor of asphalt mixing station Download PDFInfo
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- CN103441710A CN103441710A CN2013104089147A CN201310408914A CN103441710A CN 103441710 A CN103441710 A CN 103441710A CN 2013104089147 A CN2013104089147 A CN 2013104089147A CN 201310408914 A CN201310408914 A CN 201310408914A CN 103441710 A CN103441710 A CN 103441710A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002156 mixing Methods 0.000 title claims abstract description 20
- 239000010426 asphalt Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000819 phase cycle Methods 0.000 abstract description 2
- 239000011384 asphalt concrete Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Road Paving Machines (AREA)
Abstract
The invention belongs to the field for a motor brake technology, and particularly relates to the field of a brake technology which is applied to a vibratory screen motor of an asphalt concrete stirring apparatus. According to the characteristics of the vibratory screen of an asphalt mixing station, a timing controller is utilized for accurate control over the time of connection with a reverse phase sequence power supply and the time of reversal connection brake, and a brake power supply is connected or removed based on the time. Compared to the prior art, the brake device and the brake method provided by the invention can eliminate the resonance vibration during the shutdown process of the vibratory screen, the stable shutdown of the vibratory screen and a main building apparatus can be realized, the service life of the vibratory screen and the main building apparatus is prolonged, and the shutdown time is reduced by over 60%, thus the apparatus can be put into production again, and the production efficiency is improved.
Description
Technical field
The invention belongs to the braking technology field of motor, specially refer to the braking technology field that is applicable to asphalt mixing plant vibrating screen motor.
Background technology
Vibrating screen is the fine sieve separating device of pitch mixing apparatus, by threephase asynchronous, is dragged, and its operation and braking ability directly affect the quality of whole asphalt mixing plant.In the free stopping process that the asphalt mixing plant vibrating screen is directly cut off the electricity supply, resonant interaction due to vibrating screen, make stopping process not steady, during resonance, amplitude increases, even cause that main building rocks, shorten vibrating screen useful life, cause the harm such as hot aggregate storage bin cracking and main building deformation of timbering on main building; Make extend the downtime of vibrating screen, the stand-by period of starting device is longer again simultaneously.For fear of the generation of resonating in blending station vibrating screen stopping process; amplitude when reducing vibrating screen and shutting down and shorten downtime; reduce the impact to vibrating screen motor and machine driven system; extend the useful life of vibrating screen and blending station main building miscellaneous equipment, need to adopt new brake apparatus and braking method.
Summary of the invention
The purpose of this invention is to provide a kind of asphalt blending station vibrating screen dynamic braking device and braking method; make in the blending station stopping process to eliminate resonance; reach steady and quick shutdown; reduce the impact to vibrating screen motor and machine driven system, thereby extend the useful life of vibrating screen and other equipment of main building.
In order to reach purpose of the present invention, the present invention by the following technical solutions:
A kind of asphalt blending station vibrating screen dynamic braking device comprises signal source, circuit breaker, contactor and timing controller; Signal source provides run signal and brake signal, and contactor comprises operation contactor and braking contactor; Timing controller selects to be switched on or switched off operation contactor or braking contactor after receiving the signal of signal source; Circuit breaker is connected with braking contactor with the operation contactor respectively; Described timing controller can carry out plug braking and start timing, running under braking timing and switch on and off operation contactor and braking contactor.
A kind of braking method of asphalt blending station vibrating screen dynamic braking device comprises the following steps:
Step 1, wait for and receive the command signal that signal source issues, entering step 2;
Whether step 2, decision instruction are the vibrating screen motor operation signal, enter in this way step 3; Come back to if not step 2;
Step 3, timing controller receive run signal, and timing controller output operation control signal, enter step 4;
Step 4, timing controller are connected running control circuit, drive operation controller work, connect main circuit, for the vibrating screen motor provides the operation power supply, enter step 5;
Whether step 5, decision instruction are vibrating screen motor braking signal, if enter step 6, come back to if not step 5;
After step 6, timing controller receive brake signal, cut off the output of operation control signal, cut off the operation power supply, simultaneously, timing controller starts plug braking and starts timing, judge that whether timing time reaches predetermined plug braking start-up time, if timing time reaches setting-up time, enters step 7; If timing time does not reach setting-up time, return to step 6;
Step 7, timing controller output brake control signal, enter step 8;
Step 8, timing controller are connected brake control circuit, connect braking contactor, and braking contactor work, for motor provides the plug braking power supply; Meanwhile, timing controller starts to carry out the running under braking timing, enters step 9;
Step 9, judge whether the time of running under braking timing reach the predetermined running under braking time, if enter step 10; If not, return to step 9;
Step 10, timing controller stop exporting brake control signal, enter step 11;
Step 11, brake control circuit quit work, and braking contactor disconnects, motor freedom of entry stopped status.
Beneficial effect of the present invention is:
(1) adopt this device to be braked; can eliminate the covibration in the vibrating screen stopping process, reduce the amplitude in stopping process, realize steadily shutting down; thereby reduce in braking procedure the impact to vibrating screen and other equipment of main building, extend the useful life of vibrating screen and main building equipment.
(2) after the vibrating screen motor carries out plug braking, can shorten the downtime of equipment, reduce downtime more than 60%, be conducive to equipment and again put into production, improve production efficiency.
(3) the brake apparatus time delay is connected to plug braking, avoid motor to connect the negative-phase sequence power supply in higher rotation speed, thereby reduce the plug braking electric current, effectively avoid the large impact of crossing to motor and machine driven system, extend its useful life.
The 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.
Embodiment
As shown in Figure 1, the asphalt blending station vibrating screen dynamic braking device that time-based is controlled comprises circuit breaker, contactor, signal source, timing controller; Signal source provides vibrating screen motor run signal and brake signal; Contactor comprises operation contactor and braking contactor; Timing controller selects to be switched on or switched off operation contactor or braking contactor after receiving the control signal of signal source, and circuit breaker is connected with braking contactor with the operation contactor respectively, and startup, operation and the braking of vibrating screen motor shielded.Operation contactor and braking contactor, be respectively the vibrating screen motor normal operation power supply and plug braking power supply be provided.
The core that described timing controller is whole device, Main Function is that plug braking starts timing, running under braking timing and switches on and off operation contactor and braking contactor.Timing controller can be the time relay, PLC and other device that has timing and control function.Signal source can be the output signal of combination, PC control interface button, PLC or other smart machine of knob, button, unit switch, various switches.Circuit breaker can be that motor definite purpose circuit breaker, normal circuit breaker add thermal relay, fuse and other electric motor protective device.
This brake apparatus operation principle is as follows: the signal source of this device provides vibrating screen run signal and brake signal, when this device receives the run signal of signal source, device drives the adhesive of operation contactor, and for the vibrating screen motor provides the operation power supply, vibrating screen is in running status, if timing controller receives the brake signal of signal source, start timing when cutting off vibrating screen motor operation power supply, after the time of clocking arrives setting-up time, timing controller drives the plug braking contactor, motor enters the plug braking state, timing controller starts the braking time timing simultaneously, under the plug braking state, motor speed descends rapidly, after running under braking time arrival set point, timing controller cuts off vibrating screen motor brake power supply, motor freedom of entry stopped status, last motor stops operating under the dragging of machine driven system.
Fig. 2 is the braking method flow chart of asphalt blending station vibrating screen brake apparatus.As shown in Figure 2, comprise the steps:
Step 1, wait for and receive the command signal that signal source issues, entering step 2;
Whether step 2, decision instruction are the vibrating screen motor operation signal, enter in this way step 3; Come back to if not step 2;
Step 3, timing controller receive run signal, and timing controller output operation control signal, enter step 4;
Step 4, timing controller are connected running control circuit, drive operation controller work, connect main circuit, for the vibrating screen motor provides the operation power supply, enter step 5;
Whether step 5, decision instruction are vibrating screen motor braking signal, if enter step 6, come back to if not step 5;
After step 6, timing controller receive brake signal, cut off the output of operation control signal, cut off the operation power supply, simultaneously, timing controller starts plug braking and starts timing, judge that whether timing time reaches predetermined plug braking start-up time, if timing time reaches setting-up time, enters step 7; If timing time does not reach setting-up time, return to step 6;
Step 7, timing controller output brake control signal, enter step 8;
Step 8, timing controller are connected brake control circuit, connect braking contactor, and braking contactor work, for motor provides the plug braking power supply; Meanwhile, timing controller starts to carry out the running under braking timing, enters step 9;
Step 9, judge whether the time of running under braking timing reach the predetermined running under braking time, if enter step 10; If not, return to step 9;
Step 10, timing controller stop exporting 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 is shut down, the opposite direction of the direction of rotation of rotor and stator rotating magnetic field now, stalling current is 2 times of full voltage starting electric current, and motor and drive system are caused excessive shock.This braking method is connected braking power again cutting off the operation power supply after a period of time, can reduce stalling current, reduces to impact extension device useful life.But the running under braking time is too short, and braking effect is poor, the running under braking set of time is long, after end of braking, may cause the motor reverse starting.Access was mainly determined according to model, performance and the motor model of vibrating screen, intrinsic mechanical property with the time of excision braking power, equipment for different model, estimate plug braking start-up time and running under braking time according to its operation characteristic, and through test of many times, measure corresponding stalling current, vibrating screen amplitude and motor speed, thus determine the accurate scheduled time.
For 3000 type asphalt blending station vibrating screens, the 8-12mm double-amplitude, by two 15KW motors, driven, adopt belt transmissioning mode, vibrating screen is under 380V voltage during no-load running, current of electric is 19A, during motor braking, according to load torque, the time of 1/2 o'clock that motor speed is dropped to rated speed is formulated start-up time as reversal connection, and with rotational speed meters measured motor rotating speed timing, obtain and estimate reversal connection to formulate start-up time be 6.5s, after the access braking power, motor is under the effect of load torque and direction electromagnetic torque, rotating speed descends rapidly, can estimate the running under braking time is 1s.On the basis of estimated time, take 0.1s as unit test of many times backward forward, obtaining best ageing and be reversal connection, to formulate start-up time be 7s, running under braking time 1.3s.Under this ageing, can effectively eliminate the covibration in stopping process, downtime, the 49s when freely shutting down was down to 18s.
Above are only a specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out substantial change to the present invention, all should belong to the behavior of invading protection range of the present invention.
Claims (6)
1. an asphalt blending station vibrating screen dynamic braking device, it is characterized in that: this device comprises signal source, circuit breaker, contactor and timing controller; Signal source provides run signal and brake signal, and contactor comprises operation contactor and braking contactor; Timing controller selects to be switched on or switched off operation contactor or braking contactor after receiving the signal of signal source; Circuit breaker is connected with braking contactor with the operation contactor respectively; Described timing controller can carry out plug braking and start timing, running under braking timing and switch on and off operation contactor and braking contactor.
2. asphalt blending station vibrating screen dynamic braking device according to claim 1 is characterized in that: timing controller can be that the time relay or Programmable Logic Controller PLC and other have timing and the device of controlling function.
3. asphalt blending station vibrating screen dynamic braking device according to claim 1 and 2, it is characterized in that: signal source can be one of output signal of knob, button, unit switch, PC control interface button, Programmable Logic Controller PLC or other smart machine.
4. the braking method of an asphalt blending station vibrating screen dynamic braking device as claimed in claim 1, comprise the steps:
Step 1, wait for and receive the command signal that signal source issues, entering step 2;
Whether step 2, decision instruction are the vibrating screen motor operation signal, enter in this way step 3; Come back to if not step 2;
Step 3, timing controller receive run signal, and timing controller output operation control signal, enter step 4;
Step 4, timing controller are connected running control circuit, drive operation controller work, connect main circuit, for the vibrating screen motor provides the operation power supply, enter step 5;
Whether step 5, decision instruction are vibrating screen motor braking signal, if enter step 6, come back to if not step 5;
After step 6, timing controller receive brake signal, cut off the output of operation control signal, cut off the operation power supply, simultaneously, timing controller starts plug braking and starts timing, judge that whether timing time reaches predetermined plug braking start-up time, if timing time reaches setting-up time, enters step 7; If timing time does not reach setting-up time, return to step 6;
Step 7, timing controller output brake control signal, enter step 8;
Step 8, timing controller are connected brake control circuit, connect braking contactor, and braking contactor work, for motor provides the plug braking power supply; Meanwhile, timing controller starts to carry out the running under braking timing, enters step 9;
Step 9, judge whether the time of running under braking timing reach the predetermined running under braking time, if enter step 10; If not, return to step 9;
Step 10, timing controller stop exporting brake control signal, enter step 11;
Step 11, brake control circuit quit work, and braking contactor disconnects, motor freedom of entry stopped status.
5. braking method as claimed in claim 4, described predetermined plug braking start-up time is 6.5-7.2s.
6. braking method as described as claim 4 or 5.The described predetermined running under braking time is 1-1.5s.
Priority Applications (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 |
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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| Publication Number | Publication Date |
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| CN103441710A true CN103441710A (en) | 2013-12-11 |
| CN103441710B CN103441710B (en) | 2016-08-17 |
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| CN201310408914.7A Active 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108267649A (en) * | 2016-12-30 | 2018-07-10 | 丹佛斯（天津）有限公司 | Compressor phase sequence detecting method and device and its startup control method and equipment |
| EP3875173A1 (en) | 2020-03-04 | 2021-09-08 | Bühler AG | Feed or foodstuff mill |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989586A (en) * | 1982-11-11 | 1984-05-23 | Toray Eng Co Ltd | Roller unit |
| 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 |
-
2013
- 2013-09-10 CN CN201310408914.7A patent/CN103441710B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989586A (en) * | 1982-11-11 | 1984-05-23 | Toray Eng Co Ltd | Roller unit |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267649A (en) * | 2016-12-30 | 2018-07-10 | 丹佛斯（天津）有限公司 | Compressor phase sequence detecting method and device and its startup control method and equipment |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103441710B (en) | 2016-08-17 |
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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 |
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