CN210343343U - Automatic turning system of coal mining machine - Google Patents
Automatic turning system of coal mining machine Download PDFInfo
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- CN210343343U CN210343343U CN201920837992.1U CN201920837992U CN210343343U CN 210343343 U CN210343343 U CN 210343343U CN 201920837992 U CN201920837992 U CN 201920837992U CN 210343343 U CN210343343 U CN 210343343U
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- 239000003245 coal Substances 0.000 title claims abstract description 86
- 238000005065 mining Methods 0.000 title claims abstract description 83
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 19
- 230000008054 signal transmission Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an automatic turning system of a coal mining machine, which comprises a columnar signal transmitting unit, a columnar signal receiving unit and a singlechip; the columnar signal transmitting unit is used for continuously transmitting boundary guide signals of the working face and is respectively arranged on the hydraulic oil cylinders of the two hydraulic supports at the end parts of the two sides of the working face; the columnar signal receiving unit is used for receiving the working surface boundary guiding signals transmitted by the columnar signal transmitting unit and is respectively arranged at the head and the tail of the coal mining machine; the single chip microcomputer is used for processing the working surface boundary guiding signals received by the columnar signal receiving unit and controlling a power motor of the coal mining machine to achieve automatic turning of the coal mining machine at the end parts of the two sides of the working surface. The turning system realizes the automation of the turning of the coal mining machine, not only improves the production efficiency, but also reduces the labor intensity of a driver of the coal mining machine and avoids potential safety hazards caused by manual operation.
Description
Technical Field
The invention relates to an automatic turn-around system, in particular to an automatic turn-around system for a coal mining machine.
Background
Because the longwall coal mining method needs to excavate two roadways first and then adopts the retreat coal mining method to mine the coal body between the transportation roadway and the transportation roadway, the coal mining machine needs to cut coal back and forth at the roadways at two sides. Shearers currently used downhole typically require a shearer driver to control the shearer to turn around at the end to cut the coal back. The operation not only increases the labor intensity of workers, but also has certain potential safety hazard if a coal mining machine driver controls the turning of the coal mining machine for a long time. If the automatic turning of the coal mining machine can be realized, the labor intensity of a driver of the coal mining machine can be reduced, more time can be left for the driver of the coal mining machine to pay attention to other problems in the operation of the coal mining machine, and the safety of a working face can be obviously improved.
Disclosure of Invention
The invention aims to solve the problem of automatic turning of the coal mining machine to a certain extent and realize partial automation of the coal mining machine. Therefore, the invention provides an automatic turning system of a coal mining machine, which is automatic and efficient.
The technical scheme adopted for solving the problem of automatic turning of the coal mining machine is as follows:
the utility model provides an automatic turn-around system, includes signal transmission device and control system, signal transmission device includes column signal transmitting unit and column signal receiving unit, and wherein the column signal transmitting unit is fixed respectively on the hydraulic support hydro-cylinder of working face both sides end department, and the connection of electric lines is for the power supply of signal transmission device on the hydraulic support power supply line.
Furthermore, the columnar signal transmitting unit mainly comprises a row of signal transmitting units, the signal transmitting units are perpendicular to the columnar signal transmitting units and transmit laser or infrared signals to specify the boundary range of a working surface for the coal mining machine, and the columnar signal transmitting units are fixed on front-row hydraulic oil cylinders of the hydraulic support, so that the height of the columnar signal transmitting units can be synchronously increased or reduced along with the hydraulic oil cylinders when the hydraulic support is increased or reduced, and the columnar signal transmitting units can ensure that a part of the columnar signal transmitting units are overlapped with the columnar signal receiving units all the time, and the columnar signal receiving units can receive linear guide line numbers from the columnar signal transmitting units conveniently; the columnar signal transmitting unit is mainly used for transmitting infrared or laser signals in an uninterrupted section, mainly plays a role of guiding, provides boundary position signals of a working face for the coal mining machine, and is required to be automatically turned at two ends of a return airway and a transportation airway of the working face, so that the columnar signal transmitting unit is required to be respectively installed at hydraulic oil cylinders corresponding to hydraulic supports of the transportation airway at the two ends of the working face and the return airway side, is used for continuously transmitting guiding signals and appoints a boundary range of the working face for the coal mining machine.
Furthermore, the columnar signal receiving unit mainly comprises a row of columnar signal receiving units, the columnar signal receiving units are perpendicular to the columnar signal receiving units and used for receiving laser or infrared signals from the columnar signal transmitting units to transmit boundary signals to the single chip microcomputer, automatic turning of the air-return roadway end and the transportation roadway end of the coal mining machine on two sides of the working face is achieved, and as the columnar signal transmitting units can be synchronously lifted or lowered along with lifting or lowering of the hydraulic oil cylinder, a part of unit bodies of the columnar signal receiving units are overlapped with the columnar signal transmitting units all the time so as to receive straight line guide signals from the columnar signal transmitting units. The columnar signal receiving unit is mainly fixed at the position of the rear part of the working face coal mining machine, which is linearly opposite to the columnar signal transmitting unit, and the columnar signal receiving unit is required to be respectively installed at the hydraulic oil cylinders corresponding to the hydraulic supports at the two end sides of the coal mining machine for receiving boundary guide signals transmitted by the columnar signal transmitting unit because the coal mining machine needs to automatically turn around at the two ends of a return airway and a transportation airway of the working face.
Furthermore, the control system comprises a power motor, a single chip microcomputer, a columnar signal receiving unit and a columnar signal transmitting unit which are connected by a lead.
Furthermore, the columnar signal transmitting units are respectively fixed on the hydraulic supports at the two ends of the working face, and the columnar signal receiving units are respectively fixed at the two ends of the coal mining machine and used for receiving infrared or laser guide signals from the columnar signal transmitting units.
Furthermore, the single chip microcomputer is connected with the columnar signal receiving unit through a lead and a power motor of the coal mining machine, when the columnar signal receiving units fixed on two sides of the coal mining machine receive a working face boundary guide signal of the columnar signal transmitting unit, the guide signal is transmitted to the single chip microcomputer, the single chip microcomputer controls the power motor of the coal mining machine to steer so that the coal mining machine turns around at the working face boundary, and coal is cut along the reverse direction of the scraper conveyor.
Furthermore, the columnar signal transmitting units are respectively fixed at the lower parts of the front hydraulic cylinders of the hydraulic supports at the end heads on the two sides of the working surface, the supporting height of the hydraulic supports can be correspondingly increased or reduced along with the mining height of the working surface, the columnar signal transmitting units can be positioned from the lowest position to the highest position, and no matter the columnar signal transmitting units are positioned at the lowest position, the highest position or between the highest position and the lowest position, the columnar signal transmitting units and the columnar signal receiving units are partially overlapped all the time to ensure the timely transmission of the boundary guide signals of the working surface.
Further, the columnar signal transmitting unit and the columnar signal receiving unit are respectively composed of a plurality of signal transmitting sensors and a plurality of signal receiving sensors.
Furthermore, the columnar signal transmitting units are respectively arranged on hydraulic oil cylinders of hydraulic supports at two ends of the working face, and can be propelled forwards along with the hydraulic supports along with the forward propulsion of the working face coal mining machine, so that the working face coal mining height self-adaptive change can be realized.
Further, the signal transmitting and receiving unit is columnar.
The invention has the advantages that: the boundary guide signals of the columnar signal transmitting units at the two ends of the working face can always indicate the boundaries of the two sides of the working face to the coal mining machine. And the columnar signal transmitting and receiving units can be used for self-adapting to the height change of the hydraulic support caused by the change of the coal face. The system can reduce the labor intensity of a driver of the coal mining machine on the working face, can also reduce the workload of the driver of the coal mining machine, gives more time for the driver of the coal mining machine to pay attention to and solves other problems in the operation process of the coal mining machine.
Drawings
The invention is further illustrated with reference to the figures and examples.
FIG. 1 is a schematic illustration of the installation of the present invention at a low coal mining height;
FIG. 2 is a schematic illustration of the installation of the present invention at a high coal mining height;
FIG. 3 is a schematic view of the position of the present invention at both ends of a work surface during operation;
FIG. 4 is an enlarged schematic view at A of FIG. 3;
FIG. 5 is a schematic diagram of the working principle of the present invention;
fig. 6 is an adaptive schematic diagram of the pillar signal transmitting unit varying with the mining height.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 6, the present invention relates to an automatic turn-around system of a coal mining machine, comprising a signal transmission device and a control system; the hydraulic supports (5) at the end heads at the two sides of the working surface and the front hydraulic oil cylinders (11) of the hydraulic supports (12) are respectively provided with a columnar signal transmitting unit (2). The positions of the two ends of the coal mining machine (6) in the linear direction relative to the hydraulic supports (5) and (12) are respectively provided with a columnar signal receiving unit (1), the columnar signal receiving units (1) are connected with a single chip microcomputer (7) through a lead, and the single chip microcomputer (7) is directly connected with a power motor (8) of the coal mining machine.
The columnar signal transmitting unit (2) mainly comprises a row of columnar signal transmitting sensors, the columnar signal transmitting unit is perpendicular to the columnar signal transmitting unit and transmits laser or infrared signals to be used for assigning a boundary range of a working surface for the coal mining machine (6), the columnar signal transmitting unit (2) is fixed on a front row hydraulic oil cylinder (11) of the hydraulic support (5), when the hydraulic support is lifted or lowered, the height of the columnar signal transmitting unit (2) can be synchronously lifted or lowered along with the hydraulic oil cylinder, so that the columnar signal transmitting unit (2) can be adopted to ensure that a part of the columnar signal transmitting unit (2) is overlapped with the columnar signal receiving unit all the time, and the columnar signal receiving unit (1) is convenient to receive linear guide line numbers from the columnar signal transmitting unit (2). The columnar signal transmitting unit (2) is mainly used for transmitting infrared or laser signals in an uninterrupted section, mainly plays a role of guiding, provides working face boundary guiding signals for the coal mining machine (6), and is required to be automatically turned at two ends of a return airway and a transportation lane of the working face, so that the columnar signal transmitting unit (2) is required to be installed at the positions (2) corresponding to hydraulic supports (5) and (12) on the sides of the transportation lane and the return airway at the two ends of the working face, is used for continuously transmitting the guiding signals and appoints a boundary range for the coal mining machine (6).
The columnar signal receiving unit (1) mainly comprises a row of columnar signal receiving sensors, the columnar signal receiving unit (1) is perpendicular to the columnar signal receiving unit (1) and receives laser or infrared signals from the columnar signal transmitting unit (2) to transmit a working face boundary signal to the single chip microcomputer (7), automatic turning of the coal mining machine (6) along the scraper conveyor (4) at the air return roadway end and the conveying roadway end on the two sides of the working face is achieved, and as the columnar signal transmitting unit (2) can be synchronously lifted or lowered along with lifting or lowering of the hydraulic oil cylinder (11), a part of unit bodies of the columnar signal receiving unit (1) are overlapped with the columnar signal transmitting unit all the time so as to receive the boundary guide signal from the linear signal transmitting unit (2). The columnar signal receiving unit (1) is mainly fixed at the position, opposite to the columnar signal transmitting unit (2), of the rear part of the working face coal mining machine (6) in a straight line, and the coal mining machine (6) needs to be automatically turned around at two ends of a return airway and a transportation airway of a working face, so that the columnar signal receiving unit (1) needs to be respectively installed at hydraulic oil cylinders (11) corresponding to the hydraulic support (5) and the hydraulic support (12) at two end sides of the coal mining machine (6) and used for receiving boundary guide signals transmitted by the columnar signal transmitting unit (2).
When the coal mining machine (6) starts to cut coal along the direction from the return airway to the transportation lane of the scraper conveyor (4), the columnar signal transmitting units (2) on the hydraulic supports (5) and (12) at the two ends of the working face continuously transmit infrared or laser working face boundary guiding signals. When the coal mining machine (6) travels to the boundary of the working face on one side of the haulage roadway, the columnar signal receiving unit (1) arranged on the machine head side of the coal mining machine (6) receives the vertical boundary guide signal of the columnar signal transmitting unit (2). At the moment, the columnar signal receiving unit (1) transmits signals to the singlechip (7) connected with the columnar signal receiving unit, the singlechip (7) processes the signals, and then the reverse turning of the coal mining machine (6) is realized by controlling a power motor of the coal mining machine (8). And after the coal cutter (6) turns around reversely, coal cutting is started along the scraper conveyor (4) from the direction of the return airway of the haulage roadway. The columnar signal transmitting units (2) on the hydraulic supports (12) and (5) at the two ends of the working face continuously transmit infrared or laser guide signals. When the coal mining machine (6) travels to the boundary of the working face at one side of the return airway, the columnar signal receiving unit (1) arranged at the tail side of the coal mining machine (6) can receive the vertical boundary guide signal of the columnar signal transmitting unit (2). At the moment, the columnar signal receiving unit (1) transmits signals to the singlechip (7) connected with the columnar signal receiving unit, the singlechip (7) processes the signals, and then the reverse turning of the coal mining machine (6) is realized by controlling a power motor of the coal mining machine (8), so that the circular reciprocating motion is realized.
The columnar signal transmitting unit (2) and the columnar signal receiving unit (1) are respectively a columnar signal transmitting unit (2) and a columnar signal receiving unit (1) which are composed of a plurality of signal transmitting sensors and a plurality of signal receiving sensors.
Specifically, the columnar signal transmitting unit (2) is fixed at the lower parts of the hydraulic supports (5) at the end heads of the two sides of the working face and the front hydraulic oil cylinder (11) of the hydraulic support (12), the supporting height of the hydraulic supports (5) and (12) can be increased or reduced along with the increase or reduction of the mining height, the columnar signal transmitting unit (2) can be located at the highest position (9) or the lowest position (10), the columnar signal transmitting unit (2) can transmit laser or infrared signals along a direction perpendicular to the columnar signal transmitting unit, and no matter the columnar signal transmitting unit (2) is located at the lowest position (10) or the highest position (9), the columnar signal transmitting unit (2) and the columnar signal receiving unit (1) are partially overlapped to ensure the timely transmission of boundary guide signals.
The columnar signal transmitting unit (2) is arranged on hydraulic oil cylinders (11) of hydraulic supports (5) and (12) at two ends of a working face, can be propelled forwards along with the forward propulsion of a working face coal mining machine (6) along with the hydraulic supports (5) and (12), and is adaptive to the mining height change of the working face.
The above examples are only for illustrating the technical solutions of the present invention and are not to be construed as limiting, and any modifications or equivalent substitutions which do not depart from the spirit and scope of the present invention should be construed by the technical knowledge.
Claims (4)
1. An automatic U-turn system of a coal mining machine comprises a signal transmission device and is characterized in that the signal transmission device is connected with a power supply;
the signal transmission device comprises a columnar signal transmitting unit (2) and a columnar signal receiving unit (1), wherein the columnar signal transmitting unit (2) is fixed on oil cylinders (11) of end hydraulic supports at two ends of a working surface, and an electric wire (3) is connected to a power supply line of the hydraulic supports to supply power to the signal transmitting device;
the columnar signal transmitting unit (2) mainly comprises a row of columnar signal transmitting sensors, laser or infrared signals are transmitted by the columnar signal transmitting units in a perpendicular mode to be used for assigning a boundary range of a working face to the coal mining machine (6), the columnar signal transmitting units (2) are fixed on front-row hydraulic oil cylinders (11) of an end hydraulic support, and when the hydraulic support rises or falls, the height of the columnar signal transmitting units (2) can rise or fall synchronously along with the hydraulic oil cylinders, so that the columnar signal transmitting units (2) can be adopted to ensure that a part of the columnar signal transmitting units (2) are overlapped with columnar signal receiving units all the time, and the columnar signal receiving units (1) can receive linear guide line numbers from the columnar signal transmitting units (2);
the columnar signal transmitting unit (2) is mainly used for transmitting infrared or laser signals in an uninterrupted section, mainly plays a role of guiding, provides boundary position signals for the coal mining machine (6), and is required to be automatically turned around at both ends of a return airway and a transportation airway of a working face, so that the columnar signal transmitting unit (2) is required to be installed at the position (2) corresponding to an end hydraulic support at the side of the return airway and the transportation airway at both ends of the working face, is used for continuously transmitting guiding signals and appoints a boundary range for the coal mining machine (6);
the columnar signal receiving unit (1) mainly comprises a row of columnar signal receiving sensors, the columnar signal receiving unit is perpendicular to the columnar signal receiving unit and receives laser or infrared signals from the columnar signal transmitting unit (2) to transmit boundary signals to a single chip microcomputer, automatic turning of the coal mining machine (6) at the air return roadway end and the transportation roadway end on the two sides of a working surface is achieved, and as the columnar signal transmitting unit (2) can be synchronously lifted or lowered along with the lifting or lowering of the hydraulic oil cylinder (11), a part of the columnar signal receiving unit (1) can be overlapped with the columnar signal transmitting unit (2) all the time, so that linear guide signals from the columnar signal transmitting unit (2) can be received conveniently;
the columnar signal receiving unit (1) is mainly fixed at the position, corresponding to the columnar signal transmitting unit (2), of the rear part of the working face coal mining machine (6), and the coal mining machine needs to automatically turn around at two ends of a return airway and a transportation airway of the working face, so that the columnar signal receiving unit (1) needs to be installed at the position (1) corresponding to the end hydraulic support at two end sides of the coal mining machine (6) and is used for receiving boundary guide signals transmitted by the columnar signal transmitting unit (2);
the control system comprises a power motor (8), a single chip microcomputer (7), a columnar signal receiving unit (1) and a columnar signal transmitting unit (2).
2. The shearer automatic turn-around system of claim 1, wherein:
the columnar signal transmitting unit (2) is fixed on end hydraulic supports at two ends of a working surface, and the columnar signal receiving unit (1) is fixed at the end of two sides of the coal mining machine (6) and receives infrared or laser guide signals from the columnar signal transmitting unit (2);
the control system is mainly characterized in that a single chip microcomputer (7) is connected with a columnar signal receiving unit (1) and a power motor (8) of the coal mining machine through a lead, when the columnar signal receiving units (1) fixed on two sides of the coal mining machine (6) receive boundary guide signals of a columnar signal transmitting unit (2), the guide signals are transmitted to the single chip microcomputer (7), the power motor (8) of the coal mining machine (6) is controlled by the single chip microcomputer (7) to enable the coal mining machine (6) to turn around at the boundary of a working face, and coal is cut reversely along a scraper conveyor (4).
3. The shearer automatic turn-around system of claim 2, wherein:
the columnar signal transmitting unit (2) is fixed to the lower portion of a hydraulic oil cylinder (11) at the front portion of an end hydraulic support at two ends of a working face, the supporting height of the end hydraulic support can be increased or decreased along with the increase or decrease of the mining height, the columnar signal transmitting unit (2) can be located at the highest position (9) or the lowest position (10), the columnar signal transmitting unit (2) can transmit laser or infrared signals in a single direction perpendicular to the columnar signal transmitting unit, and no matter the columnar signal transmitting unit (2) is located at the lowest position (10) or the highest position (9), the columnar signal transmitting unit (2) and the columnar signal receiving unit (1) are partially overlapped to ensure the timely transmission of boundary guide signals.
4. The shearer automatic turn-around system of claim 3, wherein:
the columnar signal transmitting unit (2) is arranged on hydraulic oil cylinders (11) of end hydraulic supports at two ends of the working face, can be pushed forwards along with the end hydraulic supports along with the forward pushing of the working face coal mining machine (6), and is adaptive to the mining height change of the working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837992.1U CN210343343U (en) | 2019-06-05 | 2019-06-05 | Automatic turning system of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837992.1U CN210343343U (en) | 2019-06-05 | 2019-06-05 | Automatic turning system of coal mining machine |
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| Publication Number | Publication Date |
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| CN210343343U true CN210343343U (en) | 2020-04-17 |
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| CN201920837992.1U Expired - Fee Related CN210343343U (en) | 2019-06-05 | 2019-06-05 | Automatic turning system of coal mining machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043257A (en) * | 2019-06-05 | 2019-07-23 | 中国矿业大学(北京) | A kind of coalcutter automatic reversing system |
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2019
- 2019-06-05 CN CN201920837992.1U patent/CN210343343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043257A (en) * | 2019-06-05 | 2019-07-23 | 中国矿业大学(北京) | A kind of coalcutter automatic reversing system |
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