A coal mine underground blasting anti-punching device

Abstract

The utility model discloses a kind of coal mine underground blasting anti-bursting devices, including ore body, blast hole is set in ore body, the inner wall bottom end of blast hole is sleeved with stemming, the top end of stemming is installed with anti-bursting disc, the top of anti-bursting disc both ends is fixedly connected with hollow tube, the top center of anti-bursting disc is fixedly connected with threaded tube, the inner wall top end of blast hole is sleeved with top disc, the bottom of top disc both ends is fixedly connected with slide bar, the outer wall of slide bar is slidably connected with the inner wall of hollow tube;Construction personnel hold tightly hand frame, can rotate the threaded column on the bottom shaft core of gear body, threaded tube can move up and down on the outer wall of rotating threaded column at this time, anti-bursting disc also slides up and down simultaneously, when anti-bursting disc slides down, bottom surface can be pressed on the top surface of stemming, to fix stemming, not only improve construction efficiency, but also provide security guarantee for operating personnel and surrounding environment.

Description

Technical Field

[0001] This utility model relates to the field of coal mine construction equipment technology, and in particular to a coal mine underground blasting anti-blowout device. Background Technology

[0002] The anti-blowout device for underground blasting in coal mines is a safety protection device specifically designed for underground blasting operations in coal mines. The main purpose of this device is to prevent shock waves, flying rocks, dust and other particles generated during the blasting process from causing harm to the surrounding environment and personnel, while ensuring the blasting effect.

[0003] The following problems exist: During blasting drilling operations, stemming material is usually used to seal the borehole to ensure the safety and effectiveness of the blasting process. The length of the stemming material must reach at least one-third of the borehole depth to ensure the reliability of the sealing. In actual operation, stemming material needs to be tamped into the borehole in sections and multiple times. This process requires high physical strength from the workers and is labor-intensive. At the same time, due to the limitations of manual operation, the operational precision is often difficult to guarantee. If the stemming material is not tamped firmly enough or the hardness of the stemming material is insufficient, hole punching is likely to occur. Hole punching not only seriously affects the blasting effect and reduces construction efficiency, but also brings certain safety hazards and poses a threat to the workers and the surrounding environment. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A blasting anti-blowout device for underground coal mines includes an ore body with a blasting borehole drilled therein. A stemming material is fitted onto the bottom of the inner wall of the blasting borehole, and an anti-blowout plate is installed on the top of the stemming material. Hollow tubes are fixedly connected to both ends of the top of the anti-blowout plate, and a threaded pipe is fixedly connected to the center of the top of the anti-blowout plate. A top plate is fitted onto the top of the inner wall of the blasting borehole, and sliding rods are fixedly connected to both ends of the bottom of the top plate. The outer walls of the sliding rods are slidably connected to the inner walls of the hollow tubes.

[0007] As a further description of the above technical solution:

[0008] The top of the top plate has a through hole at the center, and a shaft is rotatably connected to the inner wall of the hole. A threaded post is fixedly connected to the bottom of the shaft, and the outer wall of the threaded post is threadedly connected to the inner wall of the threaded tube.

[0009] As a further description of the above technical solution:

[0010] A gear body is fixedly connected to the top of the shaft core, and a handle bracket is fixedly connected to the top of the gear body.

[0011] As a further description of the above technical solution:

[0012] The gear teeth on the outer wall of the gear body mesh with the top cover. Multiple sets of insert rods are fixedly connected to the bottom outer edge of the top cover. Multiple sets of L-shaped through holes are opened at the top outer edge of the top plate. One end of the inner wall of each L-shaped through hole is sleeved with the outer wall of the insert rod.

[0013] As a further description of the above technical solution:

[0014] Each of the L-shaped through holes has a groove at the bottom center of its inner wall, and a limit rod is fixedly connected to both sides of the inner wall of the groove.

[0015] As a further description of the above technical solution:

[0016] Each of the limiting rods has a slider slidably connected to its outer wall, and a return spring is sleeved on one end of each of the limiting rods' outer walls.

[0017] As a further description of the above technical solution:

[0018] Each slider has an insert block fixedly connected to its top, and a limit ring is fixedly connected to the top of the outer wall of the top plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) When the construction workers hold the handle, they can rotate the threaded column on the bottom shaft of the gear body. At this time, the threaded tube can move up and down on the outer wall of the rotating threaded column, and the anti-impact plate will also slide up and down. When the anti-impact plate slides down, it can press the bottom surface onto the top surface of the blasting mud, thereby fixing the blasting mud. This not only improves the construction efficiency, but also provides a guarantee for the safety of the workers and the surrounding environment.

[0021] (2) By setting up an anti-impact plate that can slide up and down, it is beneficial to expand the application range of the entire anti-impact hole device. Multiple sets of insert rods are inserted vertically downwards into the L-shaped through hole at the same time. When the inner wall tooth groove of the top cover successfully meshes with the outer wall tooth of the gear body, the insert rod pushes one end of the outer wall of the insert block out of the L-shaped through hole. At the same time, one end of the outer wall of the insert block is inserted into the ore body, which plays a role in fixing the entire anti-impact hole device, as well as fixing the top cover and the gear body. At this time, the threaded column cannot rotate. Attached Figure Description

[0022] Figure 1 This is a front view of the present invention;

[0023] Figure 2 This is a front sectional view of the present invention.

[0024] The correspondence between the labels and component names in the attached figures is as follows:

[0025] 1. Ore body; 2. Blasting borehole; 3. Cutting mud; 4. Anti-impact plate; 5. Hollow tube; 6. Threaded tube; 7. Top plate; 8. Sliding rod; 9. Shaft core; 10. Threaded column; 11. Gear body; 12. Handle bracket; 13. Top cover; 14. Insert rod; 15. L-shaped through hole; 16. Sliding groove; 17. Limiting rod; 18. Sliding block; 19. Return spring; 20. Insert block; 21. Limiting ring. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0029] Reference Figure 1-2 This utility model provides an embodiment of a coal mine blasting anti-blowout device, comprising an ore body 1, a blasting borehole 2 formed in the ore body 1, a stemming hole 3 fitted at the bottom of the inner wall of the blasting borehole 2, an anti-blowout plate 4 installed at the top of the stemming hole 3, the bottom surface of the anti-blowout plate 4 being in close contact with the top surface of the stemming hole 3, hollow tubes 5 being fixedly connected to both ends of the top of the anti-blowout plate 4, and a threaded tube 6 being fixedly connected to the center of the top of the anti-blowout plate 4, both the hollow tube 5 and the threaded tube 6 being perpendicular to the top surface of the anti-blowout plate 4, a top plate 7 fitted at the top of the inner wall of the blasting borehole 2, and sliding rods 8 being fixedly connected to both ends of the bottom of the top plate 7, the outer wall of the sliding rods 8 being slidably connected to the inner wall of the hollow tubes 5. By setting the connection structure between the sliding rods 8 and the hollow tubes 5, the stability of the anti-blowout plate 4 during the up-and-down sliding process is improved, and the rotation of the anti-blowout plate 4 is also prevented.

[0030] A through-hole is provided at the top center of the top plate 7, and a shaft core 9 is rotatably connected to the inner wall of the through hole. A threaded column 10 is fixedly connected to the bottom of the shaft core 9. The outer wall of the threaded column 10 is threadedly connected to the inner wall of the threaded tube 6. A gear body 11 is fixedly connected to the top of the shaft core 9, and a handle 12 is fixedly connected to the top of the gear body 11. When the construction worker holds the handle 12, the threaded column 10 on the shaft core 9 at the bottom of the gear body 11 can be rotated. At this time, the threaded tube 6 can move up and down on the outer wall of the rotating threaded column 10. At the same time, the anti-impact plate 4 will also slide up and down. When the anti-impact plate 4 slides down, it can press the bottom surface onto the top surface of the shot put 3, thereby fixing the shot put 3. By setting the anti-impact plate 4 that can slide up and down, it is beneficial to expand the application range of the entire anti-impact hole device. The gear teeth on the outer wall of the gear body 11 mesh with the top cover 13. The inner wall of the top cover 13 has a tooth groove. Multiple sets of insert rods 14 are fixedly connected to the bottom outer edge of the top cover 13.

[0031] Multiple sets of L-shaped through holes 15 are formed at the outer edge of the top plate 7. The other end of each L-shaped through hole 15 is located at the bottom of the outer wall of the top plate 7. One end of the inner wall of each L-shaped through hole 15 is sleeved with the outer wall of the insertion rod 14. A sliding groove 16 is formed at the center of the bottom of the inner wall of each L-shaped through hole 15. Limiting rods 17 are fixedly connected to both sides of the inner wall of the sliding groove 16. A slider 18 is slidably connected to the outer wall of each limiting rod 17. A return spring 19 is sleeved at one end of the outer wall of each limiting rod 17. An insertion rod is fixedly connected to the top of each slider 18. Block 20, multiple sets of insert rods 14 are inserted vertically downwards into the L-shaped through hole 15 at the same time. When the inner wall groove of the top cover 13 successfully meshes with the outer wall gear teeth of the gear body 11, the insert rod 14 pushes one end of the outer wall of the insert block 20 out of the L-shaped through hole 15. At the same time, one end of the outer wall of the insert block 20 is inserted into the ore body 1, which plays a role in fixing the entire anti-blowout device, and also plays a role in fixing the top cover 13 and the gear body 11. At this time, the threaded column 10 cannot rotate, and the top of the outer wall of the top plate 7 is fixedly connected to the limit ring 21.

[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A coal mine underground blasting anti-blowout device, comprising an ore body (1), characterized in that: A blasting borehole (2) is provided in the ore body (1). The bottom of the inner wall of the blasting borehole (2) is fitted with a cutting mud (3). An anti-impact plate (4) is installed on the top of the cutting mud (3). Hollow tubes (5) are fixedly connected to both ends of the top of the anti-impact plate (4). A threaded pipe (6) is fixedly connected to the center of the top of the anti-impact plate (4). A top plate (7) is fitted on the top of the inner wall of the blasting borehole (2). Sliding rods (8) are fixedly connected to both ends of the bottom of the top plate (7). The outer wall of the sliding rods (8) is slidably connected to the inner wall of the hollow tubes (5).

2. The anti-blowout device for underground blasting in coal mines according to claim 1, characterized in that: The top plate (7) has a through hole at the top center, and a shaft core (9) is rotatably connected to the inner wall of the hole. A threaded column (10) is fixedly connected to the bottom of the shaft core (9), and the outer wall of the threaded column (10) is threadedly connected to the inner wall of the threaded tube (6).

3. The anti-blowout device for underground blasting in coal mines according to claim 2, characterized in that: The top of the shaft core (9) is fixedly connected to the gear body (11), and the top of the gear body (11) is fixedly connected to the handle bracket (12).

4. The anti-blowout device for underground blasting in coal mines according to claim 3, characterized in that: The gear teeth on the outer wall of the gear body (11) mesh with the top cover (13). Multiple sets of insert rods (14) are fixedly connected to the bottom outer edge of the top cover (13). Multiple sets of L-shaped through holes (15) are opened at the top outer edge of the top plate (7). One end of the inner wall of each L-shaped through hole (15) is sleeved with the outer wall of the insert rod (14).

5. A coal mine underground blasting anti-blowout device according to claim 4, characterized in that: A groove (16) is provided at the bottom center of the inner wall of the L-shaped through hole (15), and a limit rod (17) is fixedly connected to both sides of the inner wall of the groove (16).

6. A coal mine underground blasting anti-blowout device according to claim 5, characterized in that: The outer wall of each limiting rod (17) is slidably connected to a slider (18), and a return spring (19) is sleeved on one end of the outer wall of each limiting rod (17).

7. A coal mine underground blasting anti-blowout device according to claim 6, characterized in that: Each slider (18) has a fixed plug (20) at its top, and a limit ring (21) is fixedly connected to the top of the outer wall of the top plate (7).

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