CN219216403U - Integrated intelligent monitoring control system for fully-mechanized coal mining face equipment - Google Patents
Integrated intelligent monitoring control system for fully-mechanized coal mining face equipment Download PDFInfo
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- CN219216403U CN219216403U CN202223084230.XU CN202223084230U CN219216403U CN 219216403 U CN219216403 U CN 219216403U CN 202223084230 U CN202223084230 U CN 202223084230U CN 219216403 U CN219216403 U CN 219216403U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The utility model belongs to the technical field of monitoring of scraper conveyors of fully-mechanized coal mining faces, provides an integrated intelligent monitoring control system of fully-mechanized coal mining face equipment, and solves the problems of large sliding pressure sliding and chain breakage accident prevention of the fully-mechanized coal mining faces. The output ends of the scraper conveyor current sensor and the scraper conveyor tension sensor are connected with the signal input end of the PLC control module, and the signal output end of the PLC control module is connected with the scraper conveyor variable frequency controller; the output ends of the reversed loader current sensor and the reversed loader tension sensor are connected with the signal input end of the PLC control module, and the signal output end of the PLC control module is connected with the reversed loader soft start controller. The system monitors the comprehensive change of motor current and large chain tension according to the current sensor and the tension sensor, realizes linkage with equipment such as a scraper conveyor, a reversed loader, a coal mining machine, a hydraulic support and the like through a PLC control module, and realizes integrated intelligent monitoring of working face equipment.
Description
Technical Field
The utility model belongs to the technical field of monitoring of scraper conveyors of fully-mechanized coal mining faces, and particularly relates to an integrated intelligent monitoring control system of fully-mechanized coal mining face equipment.
Background
Along with the continuous improvement of the mechanized degree of fully mechanized mining equipment and the continuous improvement of the coal mining process, the coal mining working face is longer and longer, the equipment is heavier, the power is larger and larger, and the unit yield is higher and higher.
At present, intelligent linkage is not realized among all devices on a working face, and whether the devices run normally is completely judged by manual control of workers on the working face and observation by experience. The working face scraper conveyor (large slide for short) has the accidents of overload press slide and even chain breakage, and a large amount of manpower, material resources and time are required to be input to deal with the accidents, so that the normal production and the service life of fully-mechanized mining equipment are seriously influenced.
Therefore, how to effectively prevent the large slip and chain breakage accidents of the fully mechanized mining face and ensure that the running states of all the equipment are automatically adjusted under the fault state to prevent the accidents are important subject to the technicians.
Disclosure of Invention
The utility model provides an integrated intelligent monitoring control system for fully-mechanized coal face equipment, which aims to solve the problems of large slip, pressure and chain breakage accidents of a fully-mechanized coal face, monitors the comprehensive changes of motor current and large chain tension according to a current sensor and a tension sensor, realizes linkage with equipment such as a scraper conveyor, a reversed loader and a coal mining machine through a PLC control module, and realizes integrated intelligent monitoring of the working face equipment.
The utility model is realized by adopting the following technical scheme: the integrated intelligent monitoring control system for the fully mechanized coal face equipment comprises a PLC control module, a scraper conveyor, a reversed loader, a coal mining machine, a scraper conveyor current sensor, a reversed loader current sensor, a scraper conveyor tension sensor, a reversed loader tension sensor, a hydraulic electromagnetic valve controller, a hydraulic support rear window electromagnetic valve, a scraper conveyor frequency conversion controller and a reversed loader soft start controller; the output ends of a scraper conveyor current sensor and a scraper conveyor tension sensor which are arranged on the scraper conveyor are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a scraper conveyor variable frequency controller, and the output end of the scraper conveyor variable frequency controller is connected to the scraper conveyor; the output ends of a reversed loader current sensor and a reversed loader tension sensor which are arranged on the reversed loader are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a reversed loader soft start controller, and the output end of the reversed loader soft start controller is connected with the reversed loader; the signal output end of the PLC control module is connected with a hydraulic support rear window electromagnetic valve to control the opening and closing of a hydraulic support rear skylight; the signal output end of the PLC control module is connected with the coal mining machine.
Preferably, a centralized control box is connected between the frequency conversion controller of the scraper conveyor and the signal output end of the soft start controller of the reversed loader and the signal output end of the PLC control module, and the output end of the centralized control box is connected with an audible and visual alarm.
Preferably, the input end of the scraper conveyor current sensor is connected with a driving motor of the scraper conveyor, and the scraper conveyor tension sensor is arranged at a large chain of the scraper conveyor; the input end of the current sensor of the reversed loader is connected with a driving motor of the reversed loader, and the tension sensor of the reversed loader is arranged at a large chain of the reversed loader.
Preferably, the conveyor current sensor and the scraper conveyor tension sensor are connected with the PLC control module through signal isolation grids, and the reversed loader current sensor and the reversed loader tension sensor are connected with the PLC control module through signal isolation grids.
Preferably, the PLC control module comprises a PLC main control module and an A/D conversion module.
Preferably, the PLC control module is connected with a hydraulic support rear window electromagnetic valve through a hydraulic electromagnetic valve controller, and an audible and visual alarm is connected to the coal mining machine.
Preferably, the output end of the PLC control module is connected with a GOT display.
Preferably, the scraper conveyor comprises a front scraper conveyor and a rear scraper conveyor, wherein a driving device is respectively corresponding to the machine heads and the machine tails of the front scraper conveyor and the rear scraper conveyor, a driving motor of the driving device is correspondingly connected with a scraper conveyor current sensor, a large chain of the driving device corresponds to a scraper conveyor tension sensor, and the scraper conveyor variable frequency controller comprises a front scraper conveyor variable frequency controller and a rear scraper conveyor variable frequency controller.
Compared with the prior art, the utility model has the beneficial effects that:
the system monitors the comprehensive change of motor current and large chain tension according to the current sensor and the tension sensor, realizes linkage with equipment such as a scraper conveyor, a reversed loader, a coal mining machine, a hydraulic support and the like through a PLC control module, and realizes integrated intelligent monitoring of working face equipment.
The working states of the scraper conveyor, the coal mining machine and the coal discharging skylight can be observed in real time through the GOT display, and whether the working states of the equipment are in a reasonable section is judged through working currents of all parts and large chain tension.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a control schematic diagram of the present embodiment;
FIG. 2 is a waveform diagram of the current and tension of the scraper conveyor of the present embodiment;
FIG. 3 is a monitoring control flow chart of the front scraper conveyor of the present embodiment;
fig. 4 is a monitoring control flow chart of the rear scraper conveyor of the present embodiment;
fig. 5 is a monitoring control flow chart of the transfer machine of the present embodiment.
Detailed Description
Technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the examples of this utility model without making any inventive effort, are intended to be within the scope of this utility model.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims, and any structural modifications, proportional changes, or dimensional adjustments, which may be made by those skilled in the art, should fall within the scope of the present disclosure without affecting the efficacy or the achievement of the present utility model, and it should be noted that, in the present disclosure, relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The present utility model provides an embodiment:
as shown in fig. 1, 3, 4 and 5, the integrated intelligent monitoring control system for the fully mechanized mining face equipment comprises a PLC control module, a scraper conveyor, a reversed loader, a coal mining machine, a scraper conveyor current sensor, a reversed loader current sensor, a scraper conveyor tension sensor, a reversed loader tension sensor, a hydraulic electromagnetic valve controller, a hydraulic support rear window electromagnetic valve, a scraper conveyor variable frequency controller and a reversed loader soft start controller; the output ends of a scraper conveyor current sensor and a scraper conveyor tension sensor which are arranged on the scraper conveyor are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a scraper conveyor variable frequency controller, and the output end of the scraper conveyor variable frequency controller is connected to the scraper conveyor; the output ends of a reversed loader current sensor and a reversed loader tension sensor which are arranged on the reversed loader are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a reversed loader soft start controller, and the output end of the reversed loader soft start controller is connected with the reversed loader; the signal output end of the PLC control module is connected with a hydraulic support rear window electromagnetic valve to control the opening and closing of a hydraulic support rear skylight; the signal output end of the PLC control module is connected with the coal mining machine.
The intelligent control warning device is designed according to the comprehensive change of the large chain tension and the motor current of the scraper conveyor, and is linked with equipment such as a coal mining machine, a reversed loader and a hydraulic support to form an integrated intelligent monitoring control system of working face equipment, the large chain tension and the current change of a driving motor of the scraper conveyor and corresponding judgment processing are rapidly made, the coal cutting speed of the coal mining machine and the operation speed of the scraper conveyor are timely controlled, and the opening degree of a rear skylight and the operation of the reversed loader are controlled, so that the aims of intelligent control of the fully-mechanized working face and prevention of the coal pressing and chain breakage accident of the scraper conveyor are achieved.
The input end of the current sensor of the scraper conveyor is connected with a driving motor of the scraper conveyor, and the tension sensor of the scraper conveyor is arranged at a large chain of the scraper conveyor; the input end of the current sensor of the reversed loader is connected with a driving motor of the reversed loader, and the tension sensor of the reversed loader is arranged at a large chain of the reversed loader.
The scraper conveyor comprises a front scraper conveyor and a rear scraper conveyor, wherein a driving device is respectively corresponding to the heads and the tails of the front scraper conveyor and the rear scraper conveyor, a driving motor of the driving device is correspondingly connected with a current sensor of the scraper conveyor, a large chain of the driving device is correspondingly connected with a tension sensor of the scraper conveyor, and the scraper conveyor variable frequency controller comprises a front scraper conveyor variable frequency controller and a rear scraper conveyor variable frequency controller.
The PLC control module comprises a PLC main control module and an A/D conversion module, and signal input ends I0.0, I0.2, I0.4, I1.0 and I1.2 are respectively electrically connected with a reversed loader current sensor, a scraper conveyor current sensor at the tail of a rear scraper conveyor, a scraper conveyor current sensor at the head of the rear scraper conveyor, a scraper conveyor current sensor at the tail of a front scraper conveyor and a scraper conveyor current sensor at the head of the front scraper conveyor through cables after passing through signal isolation grids; the signal input ends I0.1, I0.3, I0.5, I1.1 and I1.3 are respectively and electrically connected with a transfer conveyor tension sensor, a scraper conveyor tension sensor at the tail of a rear scraper conveyor, a scraper conveyor tension sensor at the head of the rear scraper conveyor, a scraper conveyor tension sensor at the tail of a front scraper conveyor and a scraper conveyor tension sensor at the head of the front scraper conveyor through cables after passing through the signal isolation grating; the output end Q0.1 is connected in series with a control loop of the coal mining machine through a cable, and is simultaneously connected with an audible and visual alarm at the position of the coal mining machine; the output end Q0.2 is connected with a hydraulic electromagnetic valve controller of the hydraulic support through a cable, and the opening and closing of a rear skylight of the hydraulic support are controlled by a corresponding hydraulic support rear window electromagnetic valve; the output ends Q0.3, Q0.4, Q0.5, Q0.6 and Q0.7 are respectively connected with the control ends of the front scraper conveyor, the rear scraper conveyor and the reversed loader in the centralized control box, and the operation, stop or speed regulation of the corresponding scraper conveyor is controlled through the front scraper conveyor variable frequency controller, the rear scraper conveyor variable frequency controller and the reversed loader soft start controller; the output end of the centralized control box is connected with an audible and visual alarm for reminding operators of judging the running state of the equipment; the GOT display is connected with an RS-485 communication interface of the PLC through a TD/CPU cable, the running state of the equipment can be intuitively observed or the user parameters of the equipment can be adjusted through a picture, and the other RS-485 communication interface of the PLC is connected with an output terminal RS and used for communicating with a dispatching duty room.
The current sensors S of the driving motors 1 and 2 of the reversed loader, the backward slide E and the forward slide D are connected; the system comprises three independent monitoring control systems, namely front scraper conveyor-coal mining machine monitoring control, rear scraper conveyor-rear skylight monitoring control and reversed loader monitoring control.
The method comprises the following steps:
1. a scraper conveyor tension sensor and a scraper conveyor current sensor are respectively arranged at a machine head and a machine tail driving device of a front scraper conveyor, current and pressure data collected through real-time monitoring are transmitted to a PLC control module, the PLC control module judges the current working state of the scraper conveyor through analysis and operation, and then an operation, speed regulation or shutdown instruction is sent to a centralized controller, a coal mining machine or a hydraulic electromagnetic valve controller.
The coal quantity of the current scraper conveyor is gradually increased, the actual value monitored by the PLC control module slowly rises, when the actual value reaches a set overload value, the PLC control module immediately sends an instruction to the centralized controller, the front scraper conveyor is switched to operate in a low-speed mode, meanwhile, the coal mining machine is immediately suspended to operate, meanwhile, an audible and visual alarm at the coal mining machine sends out an audible and visual alarm to remind a driver of the coal mining machine that the scraper conveyor is overloaded, when the tension and current of the scraper conveyor are restored to a normal state, the PLC sends the instruction again, the front scraper conveyor is switched to a high-speed state, then the coal mining machine is started to operate in a permission mode, and meanwhile, the audible and visual alarm releases the alarm.
When the monitored actual value suddenly reaches a set overcurrent or overvoltage value, the PLC judges that the large chain is blocked, a chain breakage accident possibly occurs, immediately sends out a command to stop the operation of the front scraper conveyor and the coal mining machine, and then tries to restart the front scraper conveyor at a low speed. If the normal state is recovered, starting up and running according to a normal starting procedure; if the blocking phenomenon still occurs, stopping the machine again, and sending out an alarm to remind the checking process.
2. A scraper conveyor tension sensor and a scraper conveyor current sensor are respectively arranged at a machine head and a machine tail driving device of the rear scraper conveyor, data acquired in real time are transmitted to a PLC control module, and the PLC control module performs analysis and operation to judge the working state of the scraper conveyor; a group of hydraulic support rear window electromagnetic valves are arranged on the operating valve of the hydraulic support rear skylight jack and are used for remotely controlling the opening and closing operation of the rear skylight.
When the actual current and pressure values of the rear scraper conveyor slowly reach the set overload value, the PLC control module judges that the rear scraper conveyor is overloaded and immediately sends out an instruction to switch the rear scraper conveyor to operate in a low-speed mode, meanwhile, a rear window electromagnetic valve of the hydraulic support is closed for carrying out skylight opening coal discharging operation, and an audible and visual alarm at the centralized controller sends out audible and visual alarm until tension and current of the scraper conveyor are restored to a normal state, the rear scraper conveyor is switched to a high-speed state again, and then the skylight coal discharging operation is agreed.
When the actual value of the rear scraper conveyor suddenly and rapidly rises to reach a set overcurrent or overvoltage value, the PLC control module judges that the large chain is blocked, a chain breakage accident possibly occurs, immediately sends out a command, immediately stops the operation of the rear scraper conveyor and the top coal of the splitting and skylight, and then tries to restart the rear scraper conveyor at a low speed. If the normal state is recovered, starting up and running according to a normal starting procedure; if the blocking phenomenon still occurs, stopping the machine again, and sending out audible and visual alarm to remind the inspection process.
3. When the reversed loader is in overload or blocking, the reversed loader current sensor and the reversed loader tension sensor on the reversed loader send the acquired signals to the PLC control module, and the PLC control module immediately sends a stop command to automatically close and stop the front scraper conveyor, the rear scraper conveyor, the coal mining machine and the rear skylight.
4. Setting monitoring parameters: the overload value is calculated according to 1.2 times of rated current of a motor of the scraper conveyor at high speed, namely short-time overload current of the scraper conveyor is avoided, and the scraper conveyor is ensured to be stopped infrequently. The overcurrent and tension overvoltage values are set according to the actual current of the scraper conveyor motor and the tension actually born by a large chain just before the actual situation of the working surface site and the past slip and chain breakage accidents, and the overcurrent or overvoltage value is set to be more than the overload value.
The intelligent control device is provided with the GOT display, the working states of the front scraper conveyor, the rear scraper conveyor, the coal mining machine and the coal discharging skylight can be observed in real time through the display window, whether the working states of the equipment are in a reasonable interval or not is judged through working currents of all parts and the tension of the large chain, a plurality of people are in mind, and accidents are prevented.
After the project is implemented, the occurrence of accidents such as pressure sliding or chain breakage and the like of the fully mechanized mining face due to overload operation, mechanical blocking and the like of the scraper conveyor can be effectively avoided, normal and orderly production is ensured, the service life of equipment is prolonged, the production benefit is improved, and the labor intensity and the potential safety hazard of workers due to pressure sliding and chain breakage are greatly reduced.
The waveform diagram of the current and the tension of the scraper conveyor is shown in fig. 2, wherein the t-axis represents the time (S), the i/p-axis represents the current (a) of the scraper conveyor or the tension (MP) of the large chain, a represents the waveform when the scraper conveyor is overloaded, B represents the waveform when the scraper conveyor is blocked, C represents the waveform when the scraper conveyor is normally operated, t1 represents the overload time, t2 represents the instant blocking time, and t3 represents the short-time blocking time.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. An integrated intelligent monitoring control system for fully mechanized coal mining face equipment, which is characterized in that: the system comprises a PLC control module, a scraper conveyor, a reversed loader, a coal mining machine, a scraper conveyor current sensor, a reversed loader current sensor, a scraper conveyor tension sensor, a reversed loader tension sensor, a hydraulic electromagnetic valve controller, a hydraulic support rear window electromagnetic valve, a scraper conveyor frequency conversion controller and a reversed loader soft start controller;
the output ends of a scraper conveyor current sensor and a scraper conveyor tension sensor which are arranged on the scraper conveyor are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a scraper conveyor variable frequency controller, and the output end of the scraper conveyor variable frequency controller is connected to the scraper conveyor;
the output ends of a reversed loader current sensor and a reversed loader tension sensor which are arranged on the reversed loader are connected with the signal input end of a PLC control module, the signal output end of the PLC control module is connected with a reversed loader soft start controller, and the output end of the reversed loader soft start controller is connected with the reversed loader;
the signal output end of the PLC control module is connected with a hydraulic support rear window electromagnetic valve to control the opening and closing of a hydraulic support rear skylight; the signal output end of the PLC control module is connected with the coal mining machine.
2. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 1, wherein: and a centralized control box is connected between the frequency conversion controller of the scraper conveyor, the soft start controller of the reversed loader and the signal output end of the PLC control module, and the output end of the centralized control box is connected with an audible and visual alarm.
3. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 2, wherein: the input end of the current sensor of the scraper conveyor is connected with a driving motor of the scraper conveyor, and the tension sensor of the scraper conveyor is arranged at a large chain of the scraper conveyor; the input end of the current sensor of the reversed loader is connected with a driving motor of the reversed loader, and the tension sensor of the reversed loader is arranged at a large chain of the reversed loader.
4. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 1, wherein: the conveyor current sensor and the scraper conveyor tension sensor are connected with the PLC control module through the signal isolation grating, and the reversed loader current sensor and the reversed loader tension sensor are connected with the PLC control module through the signal isolation grating.
5. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 4, wherein: the PLC control module comprises a PLC main control module and an A/D conversion module.
6. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 1, wherein: the PLC control module is connected with a hydraulic support rear window electromagnetic valve through a hydraulic electromagnetic valve controller, and an audible and visual alarm is connected to the coal mining machine.
7. The fully-mechanized coal mining face equipment integrated intelligent monitoring control system of claim 1, wherein: and the output end of the PLC control module is connected with a GOT display.
8. The fully mechanized coal mining face equipment integrated intelligent monitoring control system of any one of claims 1 to 7, wherein: the scraper conveyor comprises a front scraper conveyor and a rear scraper conveyor, wherein a driving device is respectively corresponding to the heads and the tails of the front scraper conveyor and the rear scraper conveyor, a driving motor of the driving device is correspondingly connected with a current sensor of the scraper conveyor, a large chain of the driving device corresponds to a tension sensor of the scraper conveyor, and the frequency conversion controller of the scraper conveyor comprises a frequency conversion controller of the front scraper conveyor and a frequency conversion controller of the rear scraper conveyor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223084230.XU CN219216403U (en) | 2022-11-21 | 2022-11-21 | Integrated intelligent monitoring control system for fully-mechanized coal mining face equipment |
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| CN202223084230.XU CN219216403U (en) | 2022-11-21 | 2022-11-21 | Integrated intelligent monitoring control system for fully-mechanized coal mining face equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116916193A (en) * | 2023-09-12 | 2023-10-20 | 苏州爱雄斯通信技术有限公司 | Coal mining data transmission method for multi-platform collaborative operation |
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- 2022-11-21 CN CN202223084230.XU patent/CN219216403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116916193A (en) * | 2023-09-12 | 2023-10-20 | 苏州爱雄斯通信技术有限公司 | Coal mining data transmission method for multi-platform collaborative operation |
| CN116916193B (en) * | 2023-09-12 | 2023-12-12 | 苏州爱雄斯通信技术有限公司 | Coal mining data transmission method for multi-platform collaborative operation |
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