Methane power-off instrument for coal mining

Abstract

The utility model discloses a methane power-off instrument for coal mining, which comprises a mounting plate and a methane power-off instrument main body detachably connected to the mounting plate, the methane power-off instrument main body is connected with a movable upper protective frame and a movable lower protective frame, and the top end and the bottom end of the methane power-off instrument main body are provided with pressing grooves. The upper protection frame and the lower protection frame are connected with positioning blocks matched with the pressing grooves, the two sides of the upper protection frame are connected with limiting bases, the limiting bases are matched with inserting plates connected to the two sides of the lower protection frame, the limiting bases are connected with positioning mechanisms used for positioning the inserting plates, and the upper protection frame and the lower protection frame are connected with first springs used for driving the upper protection frame and the lower protection frame to be away from each other. According to the utility model, the methane power-off device main body can be well protected and prevented from being damaged due to external impact, and meanwhile, the positioning block is pressed on the pressing groove, so that the methane power-off device main body is fixedly mounted, the stability of the methane power-off device main body is improved, and the use is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mining equipment, specifically a methane power-off device for coal mining. Background Technology

[0002] A coal mine is a rationally designed space excavated by humans when mining coal-rich geological strata. It typically includes roadways, shafts, and working faces. Coal is formed from abundant vegetation that grew over a specific geological era. Under suitable geological conditions, coal gradually accumulates into thick layers, buried underwater or in silt, and undergoes natural coalification over long geological periods. Existing coal mines require methane cut-off devices during operation to monitor and control the methane concentration in the underground environment in real time, ensuring safe production.

[0003] Methane power-off devices are typically connected to the coal mining machine with multiple bolts. During routine maintenance, tools are needed to operate on these bolts, which is time-consuming, labor-intensive, and inefficient. Furthermore, the instrument is exposed and is easily damaged by external objects during operation, affecting its service life. Utility Model Content

[0004] The purpose of this utility model is to provide a methane power-off device for coal mines, which has the advantages of providing good protection for the main body of the methane power-off device, avoiding damage due to external impacts, improving the stability of the main body of the methane power-off device, and being safe and reliable in use, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a methane power-off device for coal mine operation, comprising an installation plate and a methane power-off device body detachably connected to the installation plate. The methane power-off device body is connected to a movable upper guard frame and a lower guard frame, and pressure grooves are provided at the top and bottom ends of the methane power-off device body. The upper guard frame and the lower guard frame are connected to positioning blocks that match the pressure grooves, and limit seats are connected to both sides of the upper guard frame. The limit seats match the insert plates connected to both sides of the lower guard frame. The limit seats are connected to a positioning mechanism for positioning the insert plates, and springs are connected to the upper guard frame and the lower guard frame for driving them to move away from each other.

[0006] Preferably, the mounting plate is provided with four sliding grooves, and the bottom of the upper and lower protective frames is connected to sliding blocks, which are slidably connected to the corresponding sliding grooves.

[0007] Preferably, the spring is located in the corresponding groove, and both ends of the spring are connected to the mounting plate and the sliding block.

[0008] Preferably, the positioning mechanism includes a guide groove, a pull rod, a connector, a guide block, a second spring, and a positioning head. The two ends of the pull rod are connected to the positioning head and the connector. The guide block is used to guide the pull rod. The guide groove is provided on the limiting seat and matches the positioning head. The side of the insert plate is provided with a positioning groove that matches the positioning head. The second spring is sleeved on the pull rod and its two ends are connected to the positioning head and the guide block.

[0009] Preferably, the pull rod passes through the guide block, and the pull rod is slidably connected to the guide block.

[0010] Preferably, the positioning head has a hemispherical structure.

[0011] Preferably, the bottom of the methane power-off device body is connected to a plurality of positioning posts, which are matched with limiting grooves provided on the surface of the mounting plate.

[0012] Preferably, an observation window is hinged to the upper protective frame, and the end of the observation window is fastened to the upper protective frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting up an upper protective frame, a lower protective frame, and a positioning mechanism, can push the upper and lower protective frames closer to each other. At this time, spring one is gradually stretched until the insert plate is inserted into the limiting seat. Through the cooperation of spring two, pull rod, and positioning head, the positioning head is connected to the positioning groove to achieve positioning and locking of the insert plate. At the same time, the upper and lower protective frames are connected to each other, which can achieve good protection for the main body of the methane power cut-off device and avoid damage due to external impact. Meanwhile, the positioning block is pressed against the pressure groove to achieve installation and fixation of the main body of the methane power cut-off device, improve the stability of the main body of the methane power cut-off device, and make it safe and reliable to use. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0017] Figure 4 This is a schematic diagram of the connection structure between the positioning mechanism and the insert plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure between the positioning block and the pressure groove of this utility model;

[0019] Figure 6 This is a schematic diagram of the main structure of the methane power-off device of this utility model.

[0020] In the diagram: 1. Mounting plate; 2. Upper protective frame; 3. Lower protective frame; 4. Positioning block; 5. Main body of the methane power-off device; 6. Slide groove; 7. Spring 1; 8. Limit seat; 9. Insert plate; 10. Inclined surface; 11. Guide groove; 12. Pull rod; 13. Connector; 14. Sliding block; 15. Guide block; 16. Spring 2; 17. Positioning groove; 18. Positioning head; 19. Observation window; 20. Pressure groove; 21. Positioning column. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 6 This utility model provides a methane power-off device for coal mines, including a mounting plate 1 and a methane power-off device body 5 detachably connected to the mounting plate 1. The methane power-off device body 5 is connected to a movable upper protective frame 2 and a lower protective frame 3. The upper protective frame 2 and the lower protective frame 3 are U-shaped frames with openings at the top and bottom to facilitate the connection of wires with the methane power-off device body 5. Both the upper protective frame 2 and the lower protective frame 3 are made of high-strength plastic material, which has good impact resistance and provides good protection for the methane power-off device body 5. The top and bottom ends of the methane power-off device body 5 are provided with pressure grooves 20. The upper protective frame 2 and the lower protective frame 3 are connected to positioning blocks 4 that match the pressure grooves 20. When the positioning blocks 4 are pressed against the pressure grooves 20, a certain pressure can be applied to the methane power-off device body 5, so that the methane power-off device body 5 is tightly attached to the mounting plate 1, improving the stability of the connection between the two. Limiting seats 8 are connected to both sides of the upper guard frame 2. The limiting seats 8 are matched with the insert plates 9 connected to both sides of the lower guard frame 3. The limiting seats 8 are connected to a positioning mechanism for positioning the insert plates 9. The upper guard frame 2 and the lower guard frame 3 are connected to a spring 7 for driving the two to move away from each other.

[0023] During the installation of the methane power-off device body 5, the upper protective frame 2 and the lower protective frame 3 can be pushed closer to each other. At this time, spring 7 is gradually stretched until the insert plate 9 is inserted into the limiting seat 8. Through the cooperation of spring 16, pull rod 12, and positioning head 18, the positioning head 18 is connected to the positioning groove 17, thereby locking and positioning the insert plate 9. At the same time, the upper protective frame 2 and the lower protective frame 3 are in a connected state, which can cover the methane power-off device body 5, achieving a good protection purpose and avoiding damage from external impacts. Meanwhile, the positioning block 4 is pressed against the pressure groove 20, thereby fixing the methane power-off device body 5, improving the stability of the methane power-off device body 5, and ensuring safe and reliable use.

[0024] The mounting plate 1 is provided with four sliding grooves 6. The bottom of the upper guard frame 2 and the lower guard frame 3 are connected to sliding blocks 14. The sliding blocks 14 are slidably connected to the corresponding sliding grooves 6. When the upper guard frame 2 and the lower guard frame 3 are moving, the sliding blocks 14 slide in the corresponding sliding grooves 6, which can improve the stability of the reciprocating movement of the upper guard frame 2 and the lower guard frame 3 and play a good guiding role.

[0025] Spring 7 is located in the corresponding groove 6, and both ends of spring 7 are connected to mounting plate 1 and sliding block 14. When the upper guard frame 2 and lower guard frame 3 are connected, spring 7 is in a stretched state. When the upper guard frame 2 and lower guard frame 3 are loosened, the stretched spring 7 drives the upper guard frame 2 and lower guard frame 3 to return to their original positions synchronously, that is, the two automatically move away from each other without manual operation, saving time and effort. At this time, the main body 5 of the methane power cut-off device is exposed, which is convenient for disassembly and maintenance.

[0026] The end of the insert plate 9 is provided with a bevel 10, which is a smooth surface and can reduce the contact friction with the positioning head 18.

[0027] The positioning mechanism includes a guide groove 11, a pull rod 12, a connector 13, a guide block 15, a second spring 16, and a positioning head 18. The two ends of the pull rod 12 are connected to the positioning head 18 and the connector 13. The positioning head 18 has a hemispherical structure. The guide block 15 is used to guide the pull rod 12. The guide groove 11 is set on the limiting seat 8 and matches the positioning head 18. The side of the insert plate 9 is provided with a positioning groove 17 that matches the positioning head 18. The second spring 16 is sleeved on the pull rod 12 and its two ends are connected to the positioning head 18 and the guide block 15. When the upper guard frame 2 and the lower guard frame 3 approach each other, the insert plate 9 is inserted into the limiting seat 8. First, the inclined surface 10 contacts the positioning head 18, which can lift the positioning head 18. At this time, the second spring 16 is compressed, and the insert plate 9 continues to move until the positioning head 18 is aligned with the positioning groove 17. The compressed second spring 16 drives the positioning head 18 to move forward, so that the positioning head 18 is connected to the positioning groove 17, thereby realizing the automatic positioning of the insert plate 9. At this time, the upper guard frame 2 and the lower guard frame 3 are in a connected state.

[0028] The pull rod 12 passes through the guide block 15 and is slidably connected to the guide block 15, which improves the stability of the movement of the pull rod 12 and the positioning head 18, avoids the positioning head 18 from tilting or shifting, and prevents misalignment with the positioning groove 17.

[0029] The bottom of the methane power-off device body 5 is connected to multiple positioning posts 21, which match the limiting grooves set on the surface of the mounting plate 1. When installing the methane power-off device body 5, the positioning posts 21 can be connected to the corresponding limiting grooves to achieve initial positioning of the methane power-off device body 5.

[0030] An observation window 19 is hinged to the upper protective frame 2. The end of the observation window 19 is fastened to the upper protective frame 2. The screen of the methane power cut-off device 5 can be observed through the observation window 19. The observation window 19 can be opened to facilitate the operation of the methane power cut-off device 5.

[0031] Working Principle: During the installation of the methane power-off device body 5, the positioning post 21 is connected to the corresponding limiting groove to initially limit the position of the methane power-off device body 5. Then, the upper protective frame 2 and lower protective frame 3 are driven to move closer together, and spring 7 is gradually stretched. The insert plate 9 passes through the limiting seat 8, and spring 16 drives the positioning head 18 to connect to the positioning groove 17, thus locking and positioning the insert plate 9. This improves the stability of the connection between the upper protective frame 2 and lower protective frame 3, providing good protection for the methane power-off device body 5 and preventing damage from external impacts. Simultaneously, the positioning block 4 presses against the pressure groove 20, fixing the methane power-off device 5 in place and improving the stability of the methane power-off device 5 and the mounting plate 1. The operation is simple and convenient. When the methane power cut-off device 5 needs maintenance, a pulling force is applied to the connector 13 to separate the positioning head 18 from the positioning groove 17, thereby loosening the insert plate 9. The stretched spring 7 drives the upper guard frame 2 and the lower guard frame 3 to return to their original positions synchronously, so that the two are far apart. At this time, the methane power cut-off device 5 is exposed, which is convenient for disassembly and maintenance and has strong practicality.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methane power-off device for coal mine operation, comprising a mounting plate (1) and a methane power-off device body (5) detachably connected to the mounting plate (1), characterized in that, The main body (5) of the methane power-off device is connected to a movable upper guard frame (2) and a lower guard frame (3), and pressure grooves (20) are provided at the top and bottom of the main body (5). The upper guard frame (2) and the lower guard frame (3) are connected to positioning blocks (4) that match the pressure grooves (20). Limit seats (8) are connected to both sides of the upper guard frame (2). The limit seats (8) match the insert plates (9) connected to both sides of the lower guard frame (3). The limit seats (8) are connected to a positioning mechanism for positioning the insert plates (9). The upper guard frame (2) and the lower guard frame (3) are connected to a spring (7) for driving the two to move away from each other.

2. A methane power-off device for coal mine operation according to claim 1, characterized in that, The mounting plate (1) is provided with four sliding grooves (6), and the bottom of the upper guard frame (2) and the lower guard frame (3) are connected to sliding blocks (14), which are slidably connected to the corresponding sliding grooves (6).

3. A methane power-off device for coal mine operation according to claim 2, characterized in that, The spring (7) is located in the corresponding groove (6), and both ends of the spring (7) are connected to the mounting plate (1) and the sliding block (14).

4. A methane power-off device for coal mine operation according to claim 1, characterized in that, The positioning mechanism includes a guide groove (11), a pull rod (12), a connector (13), a guide block (15), a second spring (16), and a positioning head (18). The two ends of the pull rod (12) are connected to the positioning head (18) and the connector (13). The guide block (15) is used to guide the pull rod (12). The guide groove (11) is set on the limiting seat (8) and the guide groove (11) matches the positioning head (18). The side of the insert plate (9) is provided with a positioning groove (17) that matches the positioning head (18). The second spring (16) is sleeved on the pull rod (12) and its two ends are connected to the positioning head (18) and the guide block (15).

5. A methane power-off device for coal mine operation according to claim 4, characterized in that, The pull rod (12) passes through the guide block (15) and is slidably connected to the guide block (15).

6. A methane power-off device for coal mine operation according to claim 4, characterized in that, The positioning head (18) has a hemispherical structure.

7. A methane power-off device for coal mine operation according to claim 1, characterized in that, The bottom of the methane power-off device body (5) is connected to multiple positioning posts (21), which are matched with the limiting grooves set on the surface of the mounting plate (1).

8. A methane power-off device for coal mine operation according to claim 1, characterized in that, An observation window (19) is hinged to the upper protective frame (2), and the end of the observation window (19) is fastened to the upper protective frame (2).

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