CN102616534B - Belt conveyor braking system and dynamic control method thereof - Google Patents
Belt conveyor braking system and dynamic control method thereof Download PDFInfo
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- CN102616534B CN102616534B CN201210089897.0A CN201210089897A CN102616534B CN 102616534 B CN102616534 B CN 102616534B CN 201210089897 A CN201210089897 A CN 201210089897A CN 102616534 B CN102616534 B CN 102616534B
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Abstract
The invention discloses a dynamic control method of a belt conveyor braking system, which solve the technical problems of high probability of belt breakage and galloping existing in the conventional brake mode. A central shaft on one side of a belt drum (2) is fixedly provided with a brake disc (4); a brake mounting bracket (13) is provided with a disc brake (5); a spring resetting cylinder (12) in the disc brake (5) is communicated with one end of a brake liquid pipeline (6); the other end of the brake liquid pipeline (6) is communicated with a hydraulic control center which is arranged in an electro-hydraulic box (7); a PLC (Programmable Logic Controller) is arranged in the electro-hydraulic box (7) and is electrically connected with the hydraulic control center; a supporting roller (14) of a conveying belt (1) is provided with a belt speed sensor (9); and the central shaft of the belt drum (2) is provided with a rotation speed sensor (3). According to the belt conveyor braking system and a dynamic control method thereof, the dynamic tension of the conveying belt during braking is reduced, the reliability of the belt conveyor system is improved, and the service life of the conveying belt is prolonged.
Description
Technical field
The present invention relates to a kind of brake system of belt conveyer, particularly a kind of brake system and dynamic adjusting method thereof that is applicable to mine belt conveyor.It is upper that the principal feature of this brake system is embodied in " controlled ", and the damper brake of belt conveyer brake system dynamically controlled ensured the normal safe running of belt conveyer.
Background technology
Belt conveyer is important transmitting bulk material equipment, is widely used in the industrial circles such as iron and steel, coal, electric power, building materials, is also important load transfer device in the logistics systems such as harbour, stock ground simultaneously.Along with the development of industrial technology level, the application of the large belt conveyor of long distance, large conveying quantity, high belt speed is more and more extensive, and the braking control system of large belt conveyor has also obtained general attention.The braking method of traditional belt conveyer is to rely on mechanical friction braking, mechanical energy while consuming belt conveyer braking by friction pair frictional heating realizes braking, the lock torque of this brake mode is constant, and the loading of material and operating mode change at any time, brought the problem that easily causes broken belt and driving; Therefore, this brake mode is only suitable for, as secondary parking use, being not suitable for independently bearing the braking task of belt conveyer.
Summary of the invention
The invention provides a kind of belt conveyer brake system and dynamic control method thereof, solved the easy generation broken belt of existing brake mode existence and the technical matters of driving.
The present invention overcomes the above problems by following scheme:
A kind of belt conveyer brake system, comprise feed belt and belt roller, on the center shaft of belt roller one side, be fixedly installed brake disc, on ground below brake disc, be fixedly installed underframe, on underframe, be provided with drg mounting bracket, on drg mounting bracket, be provided with plate disc brake, spring reset cylinder in plate disc brake is communicated with one end of brake fluid pipeline, the other end of brake fluid pipeline is communicated with the fluid control center arranging in electrohydraulic box, in electrohydraulic box, be provided with PLC, PLC is electrically connected to fluid control center, on the carrying roller of feed belt, be provided with belt speed sensor, on the center shaft of belt roller, be provided with tachogen, belt speed sensor and tachogen are electrically connected to the PLC arranging in electrohydraulic box respectively.
On drg mounting bracket, be provided with temperature sensor, temperature sensor is electrically connected to PLC.
On drg mounting bracket, be provided with Smoke Sensor, Smoke Sensor is electrically connected to PLC.
A dynamic control method for belt conveyer brake system, comprises the following steps:
In the first step, the PLC that arranges, input total braking tiem and equipartition time hop count in electrohydraulic box, after calculating and rounding, draw every braking period in sampling interval
t m , and minimum braking deceleration value 0.05 m/s that input is set in PLC
2with maximum braking deceleration value 0.3m/s
2, braking start after, PLC every
t m once sampling;
Second step, PLC according to belt speed sensor, record
ithe load-transfer device speed that during inferior sampling, belt speed sensor records
with
ithe load-transfer device speed that during+1 sampling, belt speed sensor records
v i+ 1
, calculate braking deceleration
;
The 3rd step, PLC will calculate
value compares with the setting value of inputting in PLC, when
absolute value be less than 0.05 m/s
2time, PLC sends signal makes fluid control center increase the oil pressure in brake fluid pipeline, when
absolute value be greater than 0.3 m/s
2time, PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline;
The cylinder rotational angular velocity that the 4th step, PLC record according to tachogen
, calculate braking deceleration
, PLC is to calculating
value and second step calculate
value compares, when
with
error limit surpasses at 0.001 o'clock, and PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline.
The present invention has reduced the dynamic tension of load-transfer device while braking, and has improved the reliability of belt conveyor system, has extended the service life of load-transfer device.
Accompanying drawing explanation
Fig. 1 is the structural representation of main apparent direction of the present invention;
Fig. 2 is the structural representation of overlooking direction of the present invention.
The specific embodiment
A kind of belt conveyer brake system, comprise feed belt 1 and belt roller 2, on the center shaft of belt roller 2 one sides, be fixedly installed brake disc 4, on ground below brake disc 4, be fixedly installed underframe 8, on underframe 8, be provided with drg mounting bracket 13, on drg mounting bracket 13, be provided with plate disc brake 5, spring reset cylinder 12 in plate disc brake 5 is communicated with one end of brake fluid pipeline 6, the other end of brake fluid pipeline 6 is communicated with the fluid control center arranging in electrohydraulic box 7, in electrohydraulic box 7, be provided with PLC, PLC is electrically connected to fluid control center, on the carrying roller 14 of feed belt 1, be provided with belt speed sensor 9, on the center shaft of belt roller 2, be provided with tachogen 3, belt speed sensor 9 and tachogen 3 are electrically connected to the PLC arranging in electrohydraulic box 7 respectively.
On drg mounting bracket 13, be provided with temperature sensor 10, temperature sensor 10 is electrically connected to PLC.
On drg mounting bracket 13, be provided with Smoke Sensor 11, Smoke Sensor 11 is electrically connected to PLC.
A dynamic control method for belt conveyer brake system, comprises the following steps:
By the statistics and analysis of various belt conveyer braking decelerations being shown to the zone of reasonableness of belt conveyer braking deceleration is: 0.05 m/s
2to 0.3m/s
2, belt conveyer braking deceleration can be realized steady deceleration in this scope.
In the PLC of the first step, setting in electrohydraulic box 7, input total braking tiem and equipartition time hop count, after calculating and rounding, draw every braking period in sampling interval
t m , and minimum braking deceleration value 0.05 m/s that input is set in PLC
2with maximum braking deceleration value 0.3m/s
2, braking start after, PLC every
t m once sampling;
Second step, PLC according to belt speed sensor 9, record
ithe load-transfer device speed that during inferior sampling, belt speed sensor 9 records
with
ithe load-transfer device speed that during+1 sampling, belt speed sensor 9 records
v i+ 1
, calculate braking deceleration
;
The 3rd step, PLC will calculate
value compares with the setting value of inputting in PLC, when
absolute value be less than 0.05 m/s
2time, PLC sends signal makes fluid control center increase the oil pressure in brake fluid pipeline 6, when
absolute value be greater than 0.3 m/s
2time, PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline 6;
The cylinder rotational angular velocity that the 4th step, PLC record according to tachogen 3
, calculate braking deceleration
, PLC is to calculating
value and second step calculate
value compares, when
with
error limit surpasses at 0.001 o'clock, and PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline 6.
In normal brake application process,
with
should be basically identical, when
with
when deviation is larger, illustrate that skidding may appear in load-transfer device, braking acceleration is excessive, and namely lock torque is excessive, thereby should reduce the oil pressure in hydraulic tubing.
The present invention is that the signal by the sensor that is arranged on the many places such as load-transfer device, brake disc, sideslip measurement support is sent passes to the PLC in electrohydraulic box 7, PLC by analysis, draw corresponding braking scheme, and then realize the dynamic regulation to belt conveyer braking procedure.Braking control system mainly comprises control unit, brake unit, driving system and sensing feedback unit.When control unit obtains main signal, require plate disc brake 5 to implement braking, to a lock torque of belt driving system output, control unit sends electric current and the voltage signal of certain value, then by sensing unit feedback Acceleration Signal and speed signal in control unit, control unit can be realized the regulatory function to lock torque by certain index, make the braking of belt driving system meet working condition requirement.
During non-braking, the oil pressure off-load in brake fluid pipeline 6, spring reset cylinder 12 promotes to make variable automatically to reduce to minimum by retracing spring, and brake equipment is not exported lock torque.Belt speed sensor 9 and the misalignment sensor on roller rack, installed, the tachogen 3 arranging on the center shaft of belt roller 2, the temperature sensor of installing on brake disc 4, all will measure signal out by the PLC passing in electrohydraulic box 7, fast processing will be carried out according to the signal of gained in fluid control center in electrohydraulic box 7, according to result, decide and adopt which kind of braking scheme, and determine the oil pressure in brake fluid pipeline 6, by the control of oil pressure being controlled to the positive pressure of braking brake shoe to brake disc 4.
The set temperature upper limit in PLC, the data that gather according to temperature sensor, when temperature exceeds setting value, illustrate that friction force is excessive, lock torque is excessive, need to reduce lock torque, thereby reduces the oil pressure in hydraulic tubing.
The amount of smoke upper limit is set in PLC, and the data that gather according to Smoke Sensor, when amount of smoke exceeds setting value, illustrate that friction force is excessive, and lock torque is excessive, need to reduce lock torque, thereby reduces the oil pressure in hydraulic tubing.
Misalignment sensor is set the running deviation value of load-transfer device is detected, preset maximum running deviation value, when measured value is greater than setting value, PLC output signal, carries out emergency braking to conveyer.
Claims (1)
1. a dynamic control method for belt conveyer brake system, comprises the following steps:
In the PLC of the first step, setting in electrohydraulic box (7), input total braking tiem and equipartition time hop count, after calculating and rounding, draw every braking period in sampling interval
t m , and minimum braking deceleration value 0.05 m/s that input is set in PLC
2with maximum braking deceleration value 0.3m/s
2, braking start after, PLC every
t m once sampling;
Second step, PLC according to belt speed sensor (9), record
ithe load-transfer device speed that during inferior sampling, belt speed sensor (9) records
with
ithe load-transfer device speed that during+1 sampling, belt speed sensor (9) records
v i+ 1
, calculate braking deceleration
;
The 3rd step, PLC will calculate
value compares with the setting value of inputting in PLC, when
absolute value be less than 0.05 m/s
2time, PLC sends signal makes fluid control center increase the oil pressure in brake fluid pipeline (6), when
absolute value be greater than 0.3 m/s
2time, PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline (6);
The cylinder rotational angular velocity that the 4th step, PLC record according to tachogen (3)
, calculate braking deceleration
, PLC is to calculating
value and second step calculate
value compares, when
with
error limit surpasses at 0.001 o'clock, and PLC sends signal makes fluid control center reduce the oil pressure in brake fluid pipeline (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210089897.0A CN102616534B (en) | 2012-03-30 | 2012-03-30 | Belt conveyor braking system and dynamic control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210089897.0A CN102616534B (en) | 2012-03-30 | 2012-03-30 | Belt conveyor braking system and dynamic control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102616534A CN102616534A (en) | 2012-08-01 |
| CN102616534B true CN102616534B (en) | 2014-03-05 |
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ID=46556833
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210089897.0A Active CN102616534B (en) | 2012-03-30 | 2012-03-30 | Belt conveyor braking system and dynamic control method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104736459B (en) * | 2012-10-26 | 2018-06-05 | 莱特拉姆有限责任公司 | Mandatory driving low-tension transmission conveyer |
| CN104108570A (en) * | 2013-08-17 | 2014-10-22 | 都江堰金祥装饰工程有限公司 | Automatic speed reducer of vehicle loading conveyor |
| CN108545426B (en) * | 2018-06-04 | 2024-01-16 | 中国矿业大学 | Distributed braking device of downward belt conveyor and automatic control method |
| CN110171690A (en) * | 2019-05-29 | 2019-08-27 | 盐城工学院 | A kind of pipeline based on PLC control system |
Citations (9)
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|---|---|---|---|---|
| US4718540A (en) * | 1986-11-07 | 1988-01-12 | R. A. Jones & Co. Inc. | Automatic changeover for cartoners |
| DE3632962C1 (en) * | 1986-09-27 | 1988-02-11 | Alfred Tueschen | Control device for the brake and/or drive of a conveying system |
| CN2114642U (en) * | 1992-03-16 | 1992-09-02 | 山东矿业学院 | Disk brake for belt conveyer |
| DE4308412A1 (en) * | 1993-03-12 | 1994-09-15 | Alcoa Deutschland Gmbh | Arrangement for positioning articles |
| CN1836996A (en) * | 2006-03-15 | 2006-09-27 | 沈阳矿山机械（集团）有限责任公司 | Speed-variable cable-driven belt conveyer capable of carrying people and goods |
| CN201980693U (en) * | 2010-12-27 | 2011-09-21 | 江苏天奇物流系统工程股份有限公司 | Driven-type downhill antiskid chain |
| CN202107294U (en) * | 2011-05-30 | 2012-01-11 | 原平盛大实业有限公司 | Reliably running belt type conveyor |
| CN202130952U (en) * | 2011-06-10 | 2012-02-01 | 中国矿业大学 | Constant deceleration brake conversion device |
| CN202609484U (en) * | 2012-03-30 | 2012-12-19 | 太原科技大学 | Braking system of belt conveyer |
-
2012
- 2012-03-30 CN CN201210089897.0A patent/CN102616534B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3632962C1 (en) * | 1986-09-27 | 1988-02-11 | Alfred Tueschen | Control device for the brake and/or drive of a conveying system |
| US4718540A (en) * | 1986-11-07 | 1988-01-12 | R. A. Jones & Co. Inc. | Automatic changeover for cartoners |
| CN2114642U (en) * | 1992-03-16 | 1992-09-02 | 山东矿业学院 | Disk brake for belt conveyer |
| DE4308412A1 (en) * | 1993-03-12 | 1994-09-15 | Alcoa Deutschland Gmbh | Arrangement for positioning articles |
| CN1836996A (en) * | 2006-03-15 | 2006-09-27 | 沈阳矿山机械（集团）有限责任公司 | Speed-variable cable-driven belt conveyer capable of carrying people and goods |
| CN201980693U (en) * | 2010-12-27 | 2011-09-21 | 江苏天奇物流系统工程股份有限公司 | Driven-type downhill antiskid chain |
| CN202107294U (en) * | 2011-05-30 | 2012-01-11 | 原平盛大实业有限公司 | Reliably running belt type conveyor |
| CN202130952U (en) * | 2011-06-10 | 2012-02-01 | 中国矿业大学 | Constant deceleration brake conversion device |
| CN202609484U (en) * | 2012-03-30 | 2012-12-19 | 太原科技大学 | Braking system of belt conveyer |
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|---|---|
| CN102616534A (en) | 2012-08-01 |
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