CN214887061U - Control device for onboard power-off instrument of coal mining machine - Google Patents
Control device for onboard power-off instrument of coal mining machine Download PDFInfo
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- CN214887061U CN214887061U CN202120996326.XU CN202120996326U CN214887061U CN 214887061 U CN214887061 U CN 214887061U CN 202120996326 U CN202120996326 U CN 202120996326U CN 214887061 U CN214887061 U CN 214887061U
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- Prior art keywords
- coal mining
- mining machine
- normally closed
- circuit
- instrument
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- 239000003245 coal Substances 0.000 title claims abstract description 38
- 238000005065 mining Methods 0.000 title claims abstract description 35
- 239000007858 starting material Substances 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 238000012544 monitoring process Methods 0.000 description 5
- 230000004224 protection Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241000668854 Howardia biclavis Species 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a control device of an onboard power-off instrument of a coal mining machine, which is connected and arranged between a pilot loop and a conveyor locking loop of the coal mining machine in an underground environment and comprises the onboard power-off instrument, a gas early warning module, a normally closed switch, an idle normally open switch and a magnetic starter, wherein the onboard power-off instrument is configured to acquire a gas concentration detection value from an onboard sensor and generate a power-off signal when the gas concentration detection value reaches a threshold value; the gas early warning module is configured to receive the power-off signal and disconnect the normally closed switch, the normally closed switch is arranged in the pilot circuit of the coal mining machine, the idle normally open switch is connected in series between the pilot circuit of the coal mining machine and the locking circuit of the conveyor through a cable, and the magnetic starter is arranged in the locking circuit of the conveyor and configured to realize the open-circuit control. The utility model discloses can realize the reliable shutting of machine-carried outage appearance and conveyer.
Description
Technical Field
The utility model relates to a power-off control device in pit especially relates to coal-winning machine carries outage appearance controlling means.
Background
At present, safety monitoring, especially gas monitoring, is of great importance in coal mine production, and domestic coal mine gas monitoring is gradually completed by a monitoring system. As the mining scale expands, it is very important to enhance the monitoring and prevention of gas. According to the regulation of coal mine safety regulations, a drum shearer is used for coal mining, a locking device for stopping a scraper conveyor must be arranged, and the existing shearer locking conveyor is realized by a conveyor locking button on a control panel of the shearer, but the operation in the mode is very inconvenient.
Disclosure of Invention
In view of the above problems existing in the prior art, an object of the present invention is to provide a coal mining machine onboard outage instrument control apparatus that can simply and conveniently perform an outage control.
In order to achieve the above object, an aspect of the present invention provides a control device for an airborne power-off instrument of a coal mining machine, which is connected and disposed between a pilot loop of the coal mining machine in an underground environment and a locking loop of a conveyor, and includes the airborne power-off instrument, a gas early warning module, a normally closed switch, an idle normally open switch and a magnetic starter, wherein the airborne power-off instrument is configured to obtain a gas concentration detection value from an airborne sensor, and generate a power-off signal when the gas concentration detection value reaches a threshold value; the gas early warning module is configured to receive the power-off signal and disconnect the normally closed switch, the normally closed switch is arranged in the pilot circuit of the coal mining machine, the idle normally open switch is connected in series between the pilot circuit of the coal mining machine and the locking circuit of the conveyor through a cable, and the magnetic starter is arranged in the locking circuit of the conveyor and configured to realize the open-circuit control.
Preferably, the idle normally-open switch comprises a first idle normally-open switch and a second idle normally-open switch which are respectively connected in series on the two cables.
Preferably, the normally closed switches comprise a first normally closed switch and a second normally closed switch which are respectively connected in series with the pilot circuit of the coal mining machine.
Preferably, the magnetic actuator comprises a first magnetic actuator and a second magnetic actuator connected in series to the conveyor locking circuit, respectively.
Compared with the prior art, the utility model provides a pair of coal-winning machine carries outage appearance controlling means, can make the machine of coal-winning machine carry outage appearance when gas reaches the outage value, can break the power of coal-winning machine and scraper conveyor simultaneously, realize the reliable shutting of machine carries outage appearance and cargo airplane, effectual prevention and a lot of various accidents that arouse by the cargo airplane have been avoided, a lot of unexpected losses have significantly reduced, the factor of safety of the working face coal mining has been improved greatly, powerful guarantee is provided for safety in production, and the operation is simple, and convenient, and is suitable for being generalized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.
Drawings
Fig. 1 is the power-off control principle schematic diagram of the coal mining machine onboard power-off instrument control device of the utility model.
Fig. 2 is the power-off control principle schematic diagram of the coal mining machine onboard power-off instrument control device of the utility model.
The main reference numbers:
1-a pilot loop of a coal mining machine; 2-conveyor locking loop; 3-an onboard power-off instrument; 4-a gas early warning module; 5-a first idle normally open switch; 6-a second idle normally open switch; 7-a first normally closed switch; 8-a second normally closed switch; 9-magnetic starter; 10-a sensor; 91-a first magnetic actuator; 92-second magnetic actuator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure.
It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a control device for an airborne power-off instrument of a coal mining machine, which is connected and disposed between a pilot loop 1 of the coal mining machine in an underground environment and a locking loop 2 of a conveyor, and includes an airborne power-off instrument 3, a gas early warning module 4, a normally closed switch, an idle normally open switch, and a magnetic starter 9, wherein the airborne power-off instrument 3 is configured to obtain a gas concentration detection value from an airborne sensor 10, and generate a power-off signal when the gas concentration detection value reaches a threshold value; the gas early warning module 4 is configured to receive the power-off signal and disconnect the normally closed switch, the normally closed switch is arranged on the coal mining machine pilot circuit 1, the idle normally open switch is connected in series between the coal mining machine pilot circuit 1 and the conveyor locking circuit 2 through a cable, and the magnetic starter 9 is arranged on the conveyor locking circuit 2 and configured to achieve circuit-breaking control.
Specifically, in the present embodiment, the idle normally-open switch includes a first idle normally-open switch 5 and a second idle normally-open switch 6 respectively connected in series to the two cables. The normally closed switches comprise a first normally closed switch 5 and a second normally closed switch 8 which are respectively connected in series with the pilot circuit 1 of the coal mining machine. The magnetic actuators comprise a first magnetic actuator 91 and a second magnetic actuator 92, respectively, connected in series to the conveyor locking circuit 2.
The utility model discloses when implementing, at first from the idle normally open contact of the self preservation relay of coal-winning machine (not shown in the figure), also on the first magnetic starter 91 and the second magnetic starter 92 of the idle normally open switch 6 of first idle normally open switch 5 and second through cable series connection income coal-winning machine conveyer shutting return circuit 1. When the onboard power-off instrument 3 reaches a power-off threshold value, after the gas early warning module 4 receives a power-off signal, the normally closed contacts, namely the first normally closed switch 5 and the second normally closed switch 8 are disconnected, the pilot circuit 1 of the coal mining machine is disconnected, the self-protection relay is powered off, the first idle normally open switch 5 and the second idle normally open switch 6 are disconnected, meanwhile, the first magnetic starter 91 and the second magnetic starter 92 are disconnected, the conveyor locking circuit is disconnected, and the conveyor (not shown in the figure) is stopped.
The utility model discloses magnetic starter 9 is for realizing that coal-winning machine carries formula gas (methane) remote control outage and conventional outage in well coal-winning machine carries outage appearance 3. The device is connected with a core cable for the coal mining machine, realizes phase failure, overcurrent, program control, electric leakage and various protections, and receives a methane signal from a control loop to realize the onboard methane remote control power failure of the coal mining machine. In addition, the starter is externally connected with a methane sensor through a special terminal to implement conventional methane power-off. Generally, the onboard power cut-off instrument 3 can be controlled by a microcomputer and is of an explosion-proof and intrinsically safe type. Is connected with the coal mining machine through a special cable and is connected with the sensor 10 through a signal cable. When the methane reaches the power-off value (such as 1.5%), a methane signal is transmitted through a control loop of the starter under the conditions that the original start-stop control, simulation test, water temperature, oil pressure and other protections of the coal mining machine are not influenced through a special power cable between the coal mining machine and a magnetic starter for supplying power to the coal mining machine.
Specifically, the sensor 10 is installed below the cutting part of the coal mining machine, is connected with the onboard power-off instrument 3 through a special cable, and simultaneously has a comprehensive protection shell with waterproof, dustproof, shockproof and the like so as to adapt to the onboard severe conditions.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (4)
1. The coal mining machine airborne outage instrument control device is connected and arranged between a pilot loop of a coal mining machine and a conveyor locking loop in an underground environment, and is characterized by comprising an airborne outage instrument, a gas early warning module, a normally closed switch, an idle normally open switch and a magnetic starter, wherein the airborne outage instrument is configured to acquire a gas concentration detection value from an airborne sensor and generate an outage signal when the gas concentration detection value reaches a threshold value; the gas early warning module is configured to receive the power-off signal and disconnect the normally closed switch, the normally closed switch is arranged in the pilot circuit of the coal mining machine, the idle normally open switch is connected in series between the pilot circuit of the coal mining machine and the locking circuit of the conveyor through a cable, and the magnetic starter is arranged in the locking circuit of the conveyor and configured to realize the open-circuit control.
2. The control device for the power outage instrument on board the coal mining machine according to claim 1, wherein the idle normally open switches comprise a first idle normally open switch and a second idle normally open switch connected in series on two cables, respectively.
3. The shearer loader-mounted outage instrument control device of claim 1, wherein the normally closed switches comprise a first normally closed switch and a second normally closed switch that are respectively connected in series in the shearer pilot circuit.
4. The shearer onboard outage instrument control device of claim 1, wherein the magnetic actuators comprise a first magnetic actuator and a second magnetic actuator each connected in series with the conveyor latching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120996326.XU CN214887061U (en) | 2021-05-11 | 2021-05-11 | Control device for onboard power-off instrument of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120996326.XU CN214887061U (en) | 2021-05-11 | 2021-05-11 | Control device for onboard power-off instrument of coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887061U true CN214887061U (en) | 2021-11-26 |
Family
ID=78890265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120996326.XU Expired - Fee Related CN214887061U (en) | 2021-05-11 | 2021-05-11 | Control device for onboard power-off instrument of coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887061U (en) |
-
2021
- 2021-05-11 CN CN202120996326.XU patent/CN214887061U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |