Rapid maintenance and safe illumination maintenance device for subarea illumination of underground coal mine

Abstract

The utility model discloses a coal mine underground partition lighting rapid maintenance and safe lighting maintenance device, which relates to the technical field of coal mining, and comprises a mine main circuit and a plurality of branch circuits connected in parallel on the mine main circuit, and each branch circuit is connected with the mine main circuit through an explosion-proof connector. After the structure is adopted, when the illuminating lamp needs to be replaced, the branch circuit in the area is disconnected from the explosion-proof connector of the mine main circuit, the explosion-proof plug is pulled out of the explosion-proof socket, the explosion-proof plug is installed, the illuminating lamp outside the area needing to be maintained can continue to supply power for use, the explosion-proof plug is pulled out after the maintenance is finished, and the illuminating lamp can be replaced. And the explosion-proof plug is inserted into the explosion-proof socket again. Besides, when the cable in the lighting area needs to be checked, the explosion-proof connector of each branch circuit is disconnected and the explosion-proof plug is installed, the cable in which area has problems can be checked if the lighting is recovered, and otherwise, the previous process can be continued for checking.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a rapid maintenance and safety lighting device for underground zoned lighting in coal mines. Background Technology

[0002] In underground coal mine operations, explosion-proof lighting is crucial for ensuring worker safety. However, due to the harsh environment, lighting fixtures and cables are constantly exposed to moisture and dust, making aging inevitable and necessitating regular replacement. Traditional replacement methods typically require a power outage for all lighting fixtures within the entire protection zone. This not only leaves the area unlit, increasing operational risks, but also severely impacts production efficiency and mine safety management. Furthermore, when cables suffer insulation damage, traditional inspection methods require a thorough check of all cables in the area, which is time-consuming and labor-intensive, hindering on-site safety and cost-effectiveness. Utility Model Content

[0003] The purpose of this invention is to provide a rapid maintenance and safety lighting device for zoned lighting in coal mines. This device, through zoned lighting design, enables the rapid replacement and maintenance of lighting fixtures and cables in specific areas without affecting the lighting in other areas, thereby improving production efficiency and mine safety management.

[0004] To achieve the above objectives, this utility model provides a rapid maintenance and safety lighting device for underground coal mine lighting zones, including a main mine circuit and several branch circuits connected in parallel to the main mine circuit. Each branch circuit is connected to the main mine circuit via an explosion-proof connector.

[0005] With the above structure, when a lighting fixture needs to be replaced, disconnect the explosion-proof connector of the branch circuit in this area from the main mine circuit, unplug the explosion-proof plug from the explosion-proof socket, and install the explosion-proof plug. Lighting fixtures outside the area requiring maintenance can continue to be powered. After maintenance is completed, unplug the explosion-proof plug and reinsert the explosion-proof plug into the explosion-proof socket. Additionally, when checking for cable damage within the lighting area, simply disconnect the explosion-proof connector of each branch circuit and install the explosion-proof plug. If lighting is restored, the faulty cable section can be identified; otherwise, continue the previous process for further investigation.

[0006] Preferably, the explosion-proof connector includes an explosion-proof socket connected to the main circuit of the mine, an explosion-proof plug that can be inserted into the explosion-proof socket, and an explosion-proof plug that snaps onto the explosion-proof socket. This design not only ensures the safety of the connection but also facilitates quick plugging and unplugging and maintenance, making a due contribution to the safety, environmental protection, and reduced investment of the mine.

[0007] Preferably, the explosion-proof socket includes a socket housing, a socket body installed inside the socket housing, and a socket hole provided on the socket body; a socket channel is provided between the socket body and the socket housing; the explosion-proof plug includes a plug housing, a plug body installed inside the plug housing, and a pin provided on the plug body, the pin being inserted into the socket hole; a pin protective cover is provided at the front end of the plug housing, which can be inserted into the socket channel, the length of the pin protective cover is not shorter than the length of the pin and covers the outside of the pin; a moderate seal is formed between the pin protective cover and the socket channel. This design effectively prevents gas or dust from entering the socket, thereby avoiding explosions caused by electrical sparks or arcs, reducing fires and explosions caused by electrical faults, and protecting the safety of personnel and equipment. At the same time, the sealing design also prevents dust, moisture, and other harmful substances from entering the socket, thereby extending the service life of the socket.

[0008] Preferably, the pin guard has a vent hole on one side of the plug body. When the pin is fully inserted into the socket, the vent hole is blocked by the socket channel; a filter screen is installed on the vent hole. This design improves the service life of the device and prevents dust from entering between the socket body and the plug body.

[0009] Preferably, annular grooves are provided on both the outer and inner walls of the socket channel, and sealing rings are installed in the annular grooves respectively. The pin guard contacts the sealing rings for sealing. This design prevents the problem of reduced sealing performance due to long-term wear between the pin guard and the socket channel.

[0010] Preferably, a guide ramp is provided at the entrance of the socket channel. This design allows the guide ramp to guide the pin guard 323 smoothly into the socket channel.

[0011] Preferably, an annular water-guiding groove is provided at the connection position between the pin protective cover and the plug housing. The water-guiding groove can divert water that seeps in from the gap between the socket housing and the plug housing, preventing it from entering the socket channel.

[0012] Preferably, the bottom of the pin protective cover is provided with a limiting post, and the socket channel is provided with a limiting channel for the insertion of the limiting post; the limiting channel and the limiting post are appropriately sealed. This design can increase guidance and prevent the pin from being unable to be inserted into the socket.

[0013] Preferably, heat dissipation fins are evenly distributed on the outer circumference of the socket housing. This design accelerates heat dissipation and ensures the stability of the socket during long-term operation.

[0014] Preferably, the explosion-proof plug is hinged to the socket housing via a torsion spring. Under the action of the torsion spring, the explosion-proof plug covers the socket housing's insertion port. A support post is provided at the top of the socket housing. When the explosion-proof plug is inserted into the explosion-proof socket, the support post inserts into the explosion-proof plug. This design prevents dust or moisture from entering the socket and also, to some extent, limits the movement of the explosion-proof plug, preventing it from coming loose.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] This utility model, a rapid maintenance and safety lighting device for zoned lighting in coal mines, solves the technical problem in the prior art where large-scale power outages are required during mine area maintenance or repair, leading to reduced production efficiency. Through zoned lighting design, this utility model enables rapid replacement and maintenance of lighting fixtures and cables in specific areas without affecting the lighting in other areas, thereby improving production efficiency and mine safety management. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rapid maintenance and safety lighting device for underground zoned lighting in coal mines according to this utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the explosion-proof connector;

[0019] Figure 3 yes Figure 2 A schematic diagram of the plug-in / plug-out structure;

[0020] Figure 4 yes Figure 3 Schematic diagram of the explosion-proof socket;

[0021] Figure 5 yes Figure 3 Schematic diagram of the explosion-proof plug;

[0022] Figure 6 This is a magnified view of the pin guard being inserted into the socket channel.

[0023] In the diagram, 1 is the main circuit of the mine, 2 is the branch circuit, 3 is the explosion-proof connector, 31 is the explosion-proof socket, 311 is the socket housing, 312 is the socket body, 313 is the socket hole, 314 is the socket channel, 315 is the sealing ring, 316 is the guide slope, 317 is the limiting channel, 318 is the heat dissipation fins, 32 is the explosion-proof plug, 321 is the plug housing, 323 is the pin protective cover, 324 is the vent hole, 325 is the water guide groove, 326 is the limiting post, and 33 is the explosion-proof plug. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] The orientations mentioned in this specification are based on the orientation of the coal mine underground zoned lighting rapid maintenance and safety lighting maintenance device when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0026] Example 1:

[0027] like Figure 1 As shown, a rapid maintenance and safety lighting maintenance device for zoned lighting in a coal mine includes a main mine circuit 1 and several branch circuits 2 connected in parallel to the main mine circuit 1. In this embodiment, the lighting in this area can be zoned according to a 100-meter interval between each branch circuit. Each branch circuit 2 is connected to the main mine circuit 1 via an explosion-proof connector 3. This design allows each branch circuit 2 to operate independently. When a light or cable on a branch circuit 2 needs maintenance or replacement, only that branch circuit 2 needs to be disconnected without affecting the lighting of other branch circuits 2.

[0028] like Figure 2 As shown, the explosion-proof connector 3 includes an explosion-proof socket 31 connected to the main circuit 1 of the mine, an explosion-proof plug 32 that can be plugged into the explosion-proof socket 31, and an explosion-proof plug 33 that is fastened to the explosion-proof socket 31. This design not only ensures the safety of the connection, but also facilitates quick plugging and unplugging and maintenance, making due contributions to the safety, environmental protection, and reduced investment of the mine.

[0029] When a light fixture needs replacement, disconnect the branch circuit 2 of this area from the explosion-proof connector 3 of the main mine circuit 1. Unplug the explosion-proof plug 32 from the explosion-proof socket 31 and install the explosion-proof plug 33. Lighting fixtures outside the area requiring maintenance can continue to be powered. After maintenance, unplug the explosion-proof plug 33 and reinsert the explosion-proof plug 32 into the explosion-proof socket 31. Alternatively, when checking for cable damage within the lighting area, simply disconnect the explosion-proof connector 3 of each branch circuit 2 and install the explosion-proof plug 33. If lighting is restored, the faulty cable section can be identified; otherwise, continue the previous process for further investigation.

[0030] Example 2:

[0031] This is an improvement on the explosion-proof connector 3 in Embodiment 1. For example... Figure 3 , Figure 4 and Figure 5 As shown, the explosion-proof socket 31 includes a socket housing 311, a socket body 312 installed inside the socket housing 311, and a socket hole 313 provided on the socket body 312. A socket channel 314 is provided between the socket body 312 and the socket housing 311.

[0032] The explosion-proof plug 32 includes a plug housing 321, a plug body installed inside the plug housing 321, and pins disposed on the plug body. The pins are inserted into the socket 313 to establish a circuit connection. The front end of the plug housing 321 is provided with a pin guard 323 that can be inserted into the socket channel 314. The length of the pin guard 323 is not shorter than the length of the pin and covers the outside of the pin to ensure the safety of the pin during insertion and removal. A moderate seal is formed between the pin guard 323 and the socket channel 314, effectively preventing gas or dust from entering the socket, thereby avoiding explosions caused by electrical sparks or arcs, reducing fires and explosions caused by electrical faults, and protecting the safety of personnel and equipment. Simultaneously, the sealing design also prevents dust, moisture, and other harmful substances from entering the socket, thus extending the socket's service life.

[0033] like Figure 6 As shown, because a moderate seal is formed between the pin guard 323 and the socket channel 314, when the explosion-proof plug 32 is inserted or removed, the air between the socket body 312 and the plug body is squeezed out from the gaps between the pin and the plug body, and between the socket body 312 and the socket 313. Long-term high-speed airflow will cause aging and a decreasing fit at this location, leading to loosening. To solve this problem, a vent 324 is provided on the side of the plug body on the pin guard 323. When the pin is fully inserted into the socket 313, the vent 324 is blocked by the socket channel 314, thus preventing gas or dust from entering the socket through the vent 324. When the explosion-proof plug 32 is inserted into the socket channel 314, as the explosion-proof plug 32 is pushed in, the space between the socket body 312 and the plug body is gradually compressed, and the air between them is discharged from the vent 324; until the pin is fully inserted into the socket 313, the vent 324 is blocked by the socket channel 314. When the explosion-proof plug 32 is removed from the socket channel 314, it may initially be difficult to pull out due to the moderate seal. Once the vent 324 leaks out of the socket channel 314, air will enter between the socket body 312 and the plug body through the vent 324. To ensure clean air, a filter can be installed on the vent 324 to prevent dust from entering between the socket body 312 and the plug body.

[0034] In addition, annular grooves are provided on the outer and inner walls of the socket channel 314, and sealing rings 315 are installed in the annular grooves respectively. When the pin guard 323 is inserted into the socket channel 314, the pin guard 323 contacts and seals with the sealing rings 315, further improving the sealing performance and preventing the problem of reduced sealing performance due to long-term wear between the pin guard 323 and the socket channel 314.

[0035] To facilitate insertion and removal, a guide ramp 316 is provided at the entrance of the socket channel 314. The guide ramp 316 guides the pin guard 323 to be smoothly inserted into the socket channel 314. At the same time, an annular water guide groove 325 is provided at the connection position between the pin guard 323 and the plug housing 321. The water guide groove 325 can guide water that seeps into the gap between the socket housing 311 and the plug housing 321, preventing it from entering the socket channel 314.

[0036] To further improve the positional accuracy during connection and prevent the pins from failing to insert into the socket 313, a limiting post 326 is provided at the bottom of the pin guard 323, and a limiting channel 317 is provided in the socket channel 314 for the insertion of the limiting post 326. The limiting channel 317 and the limiting post 326 are appropriately sealed to prevent gas or dust from entering the socket through the gap between the limiting post 326 and the limiting channel 317. To avoid interference between the sealing ring 315 and the limiting post 326, the sealing ring on the outer wall of the socket channel 314 is a non-circular structure, which is set close to the outer wall of the socket channel 314 and the limiting channel 317, thus conforming to the shape of the pin guard 323 and the limiting post 326.

[0037] Example 3:

[0038] As an improvement to the explosion-proof connector 3 in Embodiment 1, in order to improve heat dissipation performance, heat dissipation fins 318 are uniformly arranged on the outer circumference of the socket housing 311, which can accelerate heat dissipation and ensure the stability of the socket under long-term operation.

[0039] To facilitate the installation and removal of the explosion-proof plug 33, it is hinged to the socket housing 311 via a torsion spring. Under the action of the torsion spring, the explosion-proof plug 33 automatically covers the socket opening of the socket housing 311, preventing dust or moisture from entering the socket. When the explosion-proof plug 32 is inserted into the explosion-proof socket 31, the support post located at the top of the socket housing 311 inserts into the explosion-proof plug 33, supporting it and thus not affecting the insertion and removal of the explosion-proof plug 32. Simultaneously, the support post also acts as a limit to the explosion-proof plug 32, preventing it from detaching unnecessarily.

[0040] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A device for rapid maintenance of zonal lighting and maintenance of safety lighting in a coal mine, characterized in that: The mine main circuit and a plurality of branch circuits connected in parallel with the mine main circuit, each of the branch circuits is connected with the mine main circuit through an explosion-proof connector; the explosion-proof connector comprises an explosion-proof socket connected with the mine main circuit, an explosion-proof plug which can be plugged into the explosion-proof socket and an explosion-proof plug which is buckled on the explosion-proof socket.

2. The underground coal mine zonal lighting quick maintenance and safety lighting maintenance device according to claim 1, characterized in that: The explosion-proof socket comprises a socket shell, a socket body installed in the socket shell and a socket hole arranged on the socket body; a socket channel is arranged between the socket body and the socket shell; The explosion-proof plug comprises a plug shell, a plug body installed in the plug shell and a plug pin arranged on the plug body, the plug pin is inserted into the socket hole; The front end of the plug shell is provided with a plug pin protection cover which can be inserted into the socket channel, the length of the plug pin protection cover is not shorter than the length of the plug pin and covers the outside of the plug pin; A moderate seal is formed between the plug pin protection cover and the socket channel.

3. A device for rapid maintenance and safety lighting maintenance of zoned lighting in a coal mine according to claim 2, characterized in that: A ventilation hole is arranged on one side of the plug body on the plug pin protection cover, when the plug pin is completely inserted into the socket hole, the ventilation hole is shielded by the socket channel; a filter screen is arranged on the ventilation hole.

4. The underground coal mine zonal lighting rapid maintenance and safety lighting maintenance device of claim 2, wherein: An annular groove is arranged on the outer wall and the inner wall of the socket channel respectively, a sealing ring is installed in the annular groove respectively, the plug pin protection cover is in contact with the sealing ring.

5. The underground coal mine zonal lighting rapid maintenance and safety lighting maintenance device of claim 2, wherein: A guide slope is arranged at the entrance position of the socket channel.

6. The underground coal mine zonal lighting rapid maintenance and safety lighting maintenance device of claim 2, wherein: An annular water guide groove is arranged at the connection position of the plug pin protection cover and the plug shell.

7. The underground coal mine zonal lighting rapid maintenance and safety lighting maintenance device of claim 2, wherein: A limiting column is arranged at the bottom of the plug pin protection cover, a limiting channel for inserting the limiting column is arranged in the socket channel; the limiting channel and the limiting column are moderately sealed.

8. The underground coal mine zonal lighting rapid maintenance and safety lighting maintenance device of claim 2, wherein: Radiating fins are uniformly arranged on the outer circumference of the socket shell.

9. The underground coal mine zoned lighting quick maintenance and safety lighting maintenance device of claim 1, wherein: The explosion-proof plug is hinged on the socket shell through a torsional spring, under the action of the torsional spring, the explosion-proof plug covers the socket hole of the socket shell; a supporting column is arranged above the socket shell, when the explosion-proof plug is inserted into the explosion-proof socket, the supporting column is inserted into the explosion-proof plug.

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