CN102536234B - Electric control system of thin-seam electric traction coal mining machine - Google Patents
Electric control system of thin-seam electric traction coal mining machine Download PDFInfo
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- CN102536234B CN102536234B CN201010618833.6A CN201010618833A CN102536234B CN 102536234 B CN102536234 B CN 102536234B CN 201010618833 A CN201010618833 A CN 201010618833A CN 102536234 B CN102536234 B CN 102536234B
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Abstract
The invention provides an electric control system of a thin-seam electric traction coal mining machine, relating to the field of engineering machinery. The electric control system comprises a temperature sensor, a current sensor, operation buttons, a relay, a controller, a display operation device and the like. The electric control system can be used for completing various control to the coal mining machine; a human-machine interface supplies a conversion environment to an operator with the coal mining machine; and the current working state and the current working parameters of the coal mining machine can be learned through the human-machine interface, the states of various working points are monitored in real time, and simultaneously, the operator the operator can also set the control parameters of the coal mining machine through the human-machine interface. By utilization of the electric control system, the automation level of the coal mining machine can be increased, the working efficiency is high, and stronger reliability is equipped. Meanwhile, energy saving, consumption reduction and environment pollution reduction can be realized by using electric power.
Description
Technical field
The present invention relates to engineering machinery field, specifically a kind of electric control system of thin-seam electric traction coal mining machine.
Background technology
Coal-winning machine divides sawing formula, planing pattern, drilling formula and milling type four kinds, break coal with rotary work mechanism, and loaded the coal-cutting machinery of conveyer or other haulage devices, be one and integrate large-scale complicated system that is mechanical, electric and hydraulic pressure, work under bad environment.The interruption of whole coal work will be caused if there is fault, cause huge economic loss.Along with the development of coal industry, the function of coal-winning machine gets more and more, the structure of himself, composition more sophisticated, and the reason thus broken down is also thereupon complicated.
China's girdle (thickness is lower than 1.3 meters) reserves account for 20% of gross reserves.Due to the restriction by work plane space, girdle is the weak link of well work pit mining always, and the ability, installation, maintenance, operation etc. of equipment are all very restricted, and labour intensity is large, coal seam production capacity is low, and unit yield is low, and tunnel consumption rate is high, take over anxiety.Therefore most mine abandons thin seam mining, and resources loss is serious.
Electric control system of thin-seam electric traction coal mining machine is the important subsystem of coal-winning machine, and capital equipment has controller, display, current transformer, temperature pick up, frequency converter etc.This system has been responsible for the operation of complete machine, fault diagnosis take safeguard measure according to diagnostic result, and therefore the technical performance of this system directly affects operation and the security performance of coal-winning machine, can say that this system is the subsystem of coal-winning machine indispensability.
Existing electric control system of thin-seam electric traction coal mining machine all can not the requirement that runs of complete realistic work.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of electric control system of thin-seam electric traction coal mining machine, various functions required for low seam electric traction coal mining machine are achieved by adopting good electrical control system, and each parts running status can be monitored in real time, convenient operation controls.
For this reason, the present invention is by the following technical solutions: electric control system of thin-seam electric traction coal mining machine, is characterized in that it comprises:
Be located at the temperature pick up at each motor place of coal-winning machine, detect the temperature parameter reading each motor;
Be located at the current sensor on each circuitry phase of each motor of coal-winning machine, read the numerical value of each phase current of each motor;
Be positioned at the action button on coal-winning machine;
Relay, controls each motor of coal-winning machine and action actuating mechanism;
The controller be connected with aforesaid operations button, temperature pick up, current sensor and relay, processes sensor gather signal and the duty of control relay;
The display operating device be connected with controller, the duty of display coal-winning machine also can to controller input operation order.
As improving and supplementing technique scheme, the present invention takes any combination of following technical measures or these measures further:
Described controller is connected with RS232 serial bus by CAN, bus conversion module with display operating device.
Described display operating device comprises display and command input device.
In each motor of described coal-winning machine, cutting motor is connected with flameproof button and controls its start and stop.
Described controller comprises multi-step temperature processing module.
Described controller comprises open-phase protection module.
Described controller comprises the startup module of staggering the time controlling each motor start-up.
Described controller comprises invariable power automatic control module, load current signal when working according to cutting motor, by the bearing power regulating shearer haulage speed to control cutting motor.
Described controller is connected with extending controller by CAN, and this extending controller is also connected with corresponding action button, temperature pick up, current sensor and relay.
Described controller is connected with host computer by CAN, bus conversion module and RS232 serial bus.
Beneficial effect: the present invention completes that each phase current of motor (cutting motor, traction electric machine, Oil pump electrical machinery) reading, the reading of each motor (cutting motor, traction electric machine, Oil pump electrical machinery) operating temperature, hauling speed control, cutting motor power limitation control, overload are instead led controls, started buffering, stopping cushioning control, operation condition show in real time; Man-machine interface provides the session context of operator and coal-winning machine; Can be understood current operating state understanding current operating state and the running parameter of coal-winning machine by man-machine interface, the state of each operating point of Real-Time Monitoring, operator also can be arranged coal-winning machine controling parameters by man-machine interface simultaneously.Use the present invention, can improve coal-winning machine automatization level, operating efficiency is higher, possesses stronger reliability.Meanwhile, use electric power to save energy and reduce the cost, reduce environment pollution.
Accompanying drawing explanation
Fig. 1 is system architecture principle schematic of the present invention.
Detailed description of the invention
Electric control system of thin-seam electric traction coal mining machine as shown in Figure 1, core component is controller, can comprise master controller and extending controller, is connected by CAN.Each controller is also connected with corresponding action button, temperature pick up, current sensor and control relay.
Controller is connected local display operating device and long-range host computer respectively by CAN, bus conversion module and RS232 serial bus.
Native system uses flameproof button to control the start and stop of cutting motor, by the peak point current of the superposition started when greatly reducing each electric motor starting of automatically staggering the time, while prolongation electrical machinery life, also protects electrical network.
Native system monitors the temperature rise of each motor in real time by each motor temperature sensor, and sets multi-step temperature tupe, takes different safeguard measures according to different temperature, guarantees the continous-stable work of equipment.
Native system carries out the reading of each phase current by each current of electric mutual inductor, by multilevel iudge whether phase shortage, and carries out corresponding protection.Calculate the power of each motor simultaneously and keep the power invariability of each motor.
Native system controller uses CAN and display to carry out data communication, and CAN is the bus communication technology of a kind of advanced person, has the features such as communication speed is fast, communication distance is long, communication security is reliable, is extensively used on engineering truck.Service data is passed to display operating device display by CAN by controller, and the parameter value of amendment is passed to controller and stored by display operating device.When bus data transfer breaks down, over the display by show bus fault-signal.
Display shows each motor current temperature value, current value and performance number and current duty and alert status in real time.Can the duty of each mouth of monitor controller, carry out the amendment of parameter, check control system failure condition.
After parameter modification inputs correct password over the display, can change control device parameter.Can recovery controller to dispatch from the factory parameter.
Controller and the local display device of native system are all arranged in electric control box, controller adopts the integral type PLC of waterproof, protection against the tide, dust-proof, against shock, be connected with outside by pluggable joint, pluggable joint has waterproof, protection against the tide, the function such as dust-proof equally, electric-control system has strong anti-interference ability, anti-vibration ability, possesses low temperature resistant and high-temperature stability simultaneously, is applicable to very much the adverse circumstances of down-hole.
Describe a few thing flow process of native system below:
1) process of cutting motor operating current: be realized by current transformer on each cutting motor power line to the monitoring of cutting motor operating current; current transformer is the 4-20mA current signal of the standard that converts to of operating current linearly flowing through power line; controller can obtain this current value at county level indirectly by detecting its output current value; concerning cutting motor, mainly contain overcurrent protection and overload protection.
A) overcurrent protection: when cutting motor electric current is greater than rated value 150%, main controller is opened suddenly stopping contact immediately, and coal-winning machine quits work immediately.
B) invariable power controls automatically: coal-winning machine is when normally working, the load change of its cutting motor is very violent, make the safe and reliable work of coal mining function by installing invariable power automaton and give full play to its usefulness, when cutting motor works by so-called power limitation control exactly, load information is as signal, by the bearing power regulating shearer haulage speed to control cutting motor, it is made to work in allowed limits.
That is ac three-phase asynchronous motor is near rated power, power of motor and current of electric have approximate linear relationship. so when current transformer works near cutting motor rated power, the real output of what its output voltage was similar to reflect cutting motor. in real work, coal-winning machine runs with given hauling speed, controller is in real time to a left side, the output voltage of right cutting motor current transformer is monitored. when the actual power of in two cutting motors is greater than 10% of rated power, controller sends reduction of speed instruction to frequency converter timing system, coal-winning machine reduction of speed is until overload signal disappears, namely by reducing the hauling speed of coal-winning machine, if that reduces cylinder cuts coal amount to realize the object reducing cutting motor bearing power. hauling speed is down to zero, overload signal is not also eliminated, then main controller will cut off the power supply of all motors, stop coal-winning machine work, show failure cause simultaneously.
If two cutting motor bearing powers are all lower than 80% of rated value, and now shearer haulage speed does not also reach set-point, controller rises to set-point by automatically making the hauling speed of coal-winning machine.
2) process of traction electric machine operating current: the power supply of traction electric machine is supplied by AC converter, AC converter all has perfect defencive function to itself or to its load motor, but because two traction electric machines are directly parallel on inverter output terminal, if occur, single-wheel is drawn, as in two traction wheels one there is unsettled phenomenon time, that heavy motor of load certainly will be caused seriously to overload, we have respectively added a current transformer on the power line of two traction electric machines for this reason, Real-Time Monitoring is carried out to the operating mode of traction electric machine, as long as when having an operating current to be greater than 155% of rated value in two traction electric machines, it is suddenly stopped contact and opens by main controller immediately, stop any work of coal-winning machine, operate display station simultaneously and show that motor overload.
It should be pointed out that the present embodiment only listing property principle of the present invention and effect are described, but not for limiting the present invention.Any person skilled in the art person all can without departing from the spirit and scope of the present invention, modify to above-described embodiment.Therefore, the scope of the present invention, should listed by claims.
Claims (10)
1. electric control system of thin-seam electric traction coal mining machine, is characterized in that it comprises:
Be located at the temperature pick up at each motor place of coal-winning machine, detect the temperature parameter reading each motor;
Be located at the current sensor on each circuitry phase of each motor of coal-winning machine, read the numerical value of each phase current of each motor;
Be positioned at the action button on coal-winning machine;
Relay, controls each motor of coal-winning machine and action actuating mechanism;
The controller be connected with aforesaid operations button, temperature pick up, current sensor and relay, processes sensor gather signal and the duty of control relay, by the numerical value of each phase current of more described each motor, judge whether phase shortage, and carry out open-phase protection;
The display operating device be connected with controller, the duty of display coal-winning machine also can to controller input operation order.
2. electric control system of thin-seam electric traction coal mining machine according to claim 1, is characterized in that: described controller is connected with RS232 serial bus by CAN, bus conversion module with display operating device.
3. electric control system of thin-seam electric traction coal mining machine according to claim 2, is characterized in that: described display operating device comprises display and command input device.
4., according to the electric control system of thin-seam electric traction coal mining machine described in claim 1, it is characterized in that: in each motor of described coal-winning machine, cutting motor is connected with the start and stop that flameproof button controls described cutting motor.
5. electric control system of thin-seam electric traction coal mining machine according to claim 1; it is characterized in that: described controller comprises multi-step temperature processing module; described multi-step temperature processing module is used for taking different safeguard measures according to different temperature, guarantees the continous-stable work of described each motor.
6. electric control system of thin-seam electric traction coal mining machine according to claim 1; it is characterized in that: described controller comprises open-phase protection module; described open-phase protection module is used for the numerical value by each phase current of more described each motor, judges whether phase shortage, and carries out open-phase protection.
7. electric control system of thin-seam electric traction coal mining machine according to claim 1, is characterized in that: described controller comprises the startup module of staggering the time controlling each motor start-up.
8. electric control system of thin-seam electric traction coal mining machine according to claim 1, it is characterized in that: described controller comprises invariable power automatic control module, load current signal when working according to cutting motor, by the bearing power regulating shearer haulage speed to control cutting motor.
9. the electric control system of thin-seam electric traction coal mining machine according to any one of claim 1-8, it is characterized in that: described controller is connected with extending controller by CAN, this extending controller is also connected with corresponding action button, temperature pick up, current sensor and relay.
10. electric control system of thin-seam electric traction coal mining machine according to claim 9, is characterized in that: described controller is connected with host computer by CAN, bus conversion module and RS232 serial bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618833.6A CN102536234B (en) | 2010-12-31 | 2010-12-31 | Electric control system of thin-seam electric traction coal mining machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010618833.6A CN102536234B (en) | 2010-12-31 | 2010-12-31 | Electric control system of thin-seam electric traction coal mining machine |
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| CN102536234A CN102536234A (en) | 2012-07-04 |
| CN102536234B true CN102536234B (en) | 2015-05-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533856B (en) * | 2014-11-13 | 2016-05-11 | 中国矿业大学 | Full-hydraulic drill type coal mining machine hydraulic control system |
| CN107479475A (en) * | 2017-09-26 | 2017-12-15 | 天地科技股份有限公司上海分公司 | A kind of coal-winning machine manipulation and analysis exchange method |
| CN109839917B (en) * | 2019-01-08 | 2020-10-20 | 浙江大学 | Self-adaptive correction coal mining machine fault diagnosis system |
| CN109635879B (en) * | 2019-01-08 | 2023-04-07 | 浙江大学 | Coal mining machine fault diagnosis system with optimal parameters |
| CN115949405B (en) * | 2023-03-14 | 2023-06-02 | 三一重型装备有限公司 | Coal mining machine control method, system, coal mining machine, electronic equipment and computer medium |
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| DE4416643A1 (en) * | 1994-05-11 | 1995-11-16 | Bochumer Eisen Heintzmann | Coal-extracting machinery control system |
| CN1567696A (en) * | 2003-06-17 | 2005-01-19 | 刘建功 | Electromagnetic speed-regulating electrical haulage coal cutter |
| CN101441464A (en) * | 2007-11-23 | 2009-05-27 | 天地上海采掘装备科技有限公司 | Mining excavation equipment control system |
| CN201534735U (en) * | 2009-10-29 | 2010-07-28 | 程栓柱 | Full digital frequency conversion electric control system control console of mine lifter |
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2010
- 2010-12-31 CN CN201010618833.6A patent/CN102536234B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| US4323280A (en) * | 1976-11-30 | 1982-04-06 | Coalex, Inc. | Remote controlled high wall coal mining system |
| DE4416643A1 (en) * | 1994-05-11 | 1995-11-16 | Bochumer Eisen Heintzmann | Coal-extracting machinery control system |
| CN1567696A (en) * | 2003-06-17 | 2005-01-19 | 刘建功 | Electromagnetic speed-regulating electrical haulage coal cutter |
| CN101441464A (en) * | 2007-11-23 | 2009-05-27 | 天地上海采掘装备科技有限公司 | Mining excavation equipment control system |
| CN201534735U (en) * | 2009-10-29 | 2010-07-28 | 程栓柱 | Full digital frequency conversion electric control system control console of mine lifter |
Non-Patent Citations (1)
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| 《极薄煤层电牵引采煤机电气控制***的研究与实现》;吴振毅;《复旦大学硕士学位论文》;20081231;第30-35页 * |
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Address after: 200433 room 323, No. 702-60, National Road, Shanghai, Yangpu District Applicant after: Fin control (Shanghai) Limited by Share Ltd Address before: 200090 101D, 2767 Pingliang Road, Shanghai, Yangpu District, China Applicant before: Shanghai Pal-Fin Auto Control Technology Co., Ltd. |
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