Drilling blasting auxiliary device for coal-pillar-free mining

Abstract

The utility model relates to the technical field of drilling and blasting assisting, in particular to a drilling and blasting assisting device for coal-pillar-free mining, which comprises a hanger plate, a hinge used for rotating is mounted in the middle of the hanger plate, the hanger plate is divided into a first hanger plate and a second hanger plate through the hinge, and the first hanger plate and the second hanger plate are connected through the hinge. The first lifting plate and the second lifting plate are each provided with a sliding groove providing a sliding space, supporting plates used for blocking high-pressure gas in a drill hole are installed at the top of the lifting plate at equal intervals, a telescopic assembly used for stretching out and drawing back the supporting plates is installed at one end of the lifting plate, and a fixing assembly used for fixing the lifting plate is installed at the top of the lifting plate. According to the drilling and blasting auxiliary device for coal-pillar-free mining, the supporting plate, the buffering cushion, the telescopic assembly, the fixing assembly and the like are arranged, so that the drilling and blasting auxiliary device has the advantages of being effective in protection function, convenient to install and detach and capable of enhancing safety.

Description

Technical Field

[0001] This utility model relates to the field of drilling and blasting auxiliary technology, and in particular to a drilling and blasting auxiliary device used in coal pillarless drilling. Background Technology

[0002] In drilling and blasting operations for pillarless mining, roof blasting is a key technology. It aims to cut the roof rock layer through precise blasting to relieve pressure and effectively support the roadway, ensuring the smooth progress of pillarless mining. This blasting method can effectively control the deformation of the surrounding rock in the roadway, reduce the pressure on the roadway, improve the resource recovery rate, and reduce the roadway maintenance cost. It is widely used and has significant effects in actual mining.

[0003] However, during roof blasting, high-pressure gas inside the borehole bursts out through cracks, damaging the borehole and surrounding gas pipelines, cables, and other facilities. Traditional protective measures often employ simple shielding materials such as canvas and wooden boards, but these measures have many drawbacks: Firstly, canvas and wooden boards have limited strength and cannot withstand the large impact force generated by the blast, easily being broken or washed away by debris during the blast, failing to effectively block debris and dust. Secondly, the transportation and installation of these protective materials are difficult, requiring a lot of manpower and time. For example, during transportation, due to the limited space in the tunnel, these protective materials may bump and collide when moved to a suitable location, easily damaging the protective materials or other facilities.

[0004] Therefore, it is necessary to provide a new auxiliary device for drilling and blasting without coal pillars to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a drilling and blasting auxiliary device for coal pillar-free drilling.

[0006] The drilling and blasting auxiliary device for coal pillarless drilling provided by this utility model includes: a hanging plate, a hinge for rotation installed in the middle of the hanging plate, the hanging plate being divided into a first hanging plate and a second hanging plate by the hinge, both the first and second hanging plates having grooves to provide sliding space, support plates for blocking high-pressure gas inside the borehole being installed at equal intervals on the top of the hanging plate, a telescopic assembly for telescopic support plates being installed at one end of the hanging plate, the telescopic assembly including: an electric push rod, a push plate, an active rod, a first rotating rod and a second rotating rod, an electric push rod being fixedly connected to one side of the hanging plate, an active rod being fixedly connected to the output end of the electric push rod, the active rod sliding in the groove, a first rotating rod being rotatably connected to one end of the active rod, a push plate being fixedly connected to one end of the first rotating rod, a second rotating rod being rotatably connected to one end of the first rotating rod, the end of the first rotating rod away from the second rotating rod being fixedly connected to the support plate, and a fixing assembly for fixing the hanging plate being installed on the top of the hanging plate.

[0007] Preferably, the telescopic assembly further includes: a second support rod, a second sliding rod, a third rotating rod, a fixed rod, a third sliding rod, a third support rod, a fourth sliding rod, a fourth support rod, a fixed plate, and a fifth support rod. The second support rod is rotatably connected to the middle of the first rotating rod. The second sliding rod is installed inside the suspended platform. The second support rod is rotatably connected to the second sliding rod. The third rotating rod is rotatably connected to one end of the second sliding rod. The fixed rod is rotatably connected to one side of the suspended platform. One end of the third rotating rod is rotatably connected to the fixed rod. The other end of the third rotating rod is fixedly connected to the support plate. The middle of the third rotating rod is rotatably connected to the second rotating rod. The third sliding rod is installed inside the suspended platform. One end of the second rotating rod is rotatably connected to the third sliding rod. The third support rod is rotatably connected to one end of the third sliding rod. The fixed rod is rotatably connected to the middle of the third support rod. The fourth sliding rod is installed inside the suspended platform. The fourth support rod is rotatably connected to one end of the fourth sliding rod. The fourth support rod is rotatably connected to the fixed rod. The fifth support rod is rotatably connected to one end of the fourth sliding rod. The fixed plate is rotatably connected to the top of the suspended platform. The end of the fifth support rod away from the fourth sliding rod is rotatably connected to the fixed plate.

[0008] Preferably, the fixing component includes: a fixing column, a release block, a telescopic block, and a hanging block. The two ends of the hanging plate are symmetrically fixedly connected to the fixing columns. The release block is slidably connected to the outer wall of the fixing column. The hanging block is installed on the top of the fixing column. The telescopic block is slidably connected inside the hanging block. The hanging block has a slide rail inside, and the fixing column slides in the slide rail.

[0009] Preferably, the second rotating rod, the second support rod, the fixed rod, and the fifth support rod are located in the same vertical plane, and the first rotating rod, the third rotating rod, the third support rod, and the fourth support rod are located in the same vertical plane.

[0010] Preferably, the fixing plate and the push plate have the same structural design as the support plate.

[0011] Preferably, both the top of the first and second hanging plates are fixedly connected with cushioning pads.

[0012] Preferably, the diameter of the slide hole is larger than the diameter of the fixed column, and the length of the slide is larger than the length of the fixed column.

[0013] Preferably, the top of the fixing column is a hemispherical design, and the top and bottom of the release block are both beveled designs.

[0014] Compared with related technologies, the drilling and blasting auxiliary device for pillarless mining provided by this utility model has the following beneficial effects:

[0015] Effective protective functions:

[0016] The support plate, fixing plate and push plate of this device have sufficient strength and stability. Compared with traditional canvas and wooden board protective materials, they can withstand the greater impact force generated by blasting, effectively block high-pressure gas and dust, avoid damage to equipment and personnel in the roadway, and provide reliable protection for drilling and blasting operations in pillarless mining.

[0017] Easy installation and removal:

[0018] The unique design of the fixing components makes the installation and disassembly of the device simple and quick. The hemispherical design of the fixing column and the angled design of the release block facilitate the fixing and release of the limit operation, reducing the manpower and time costs required for installation and disassembly, avoiding the bump and damage problems that may occur during the transportation and installation of traditional protective objects, and improving work efficiency.

[0019] Enhanced security:

[0020] The buffer pads on the top of the first and second hanging plates can effectively buffer the explosive impact, extend the service life of the hanging plates, and improve the stability of the device. In addition, the second rotating rod, the second support rod, the fixed rod and the fifth support rod are located in the same vertical plane, and the first rotating rod, the third rotating rod, the third support rod and the fourth support rod are located in the same vertical plane, which avoids collisions between the components when the fixed components are in operation, ensures the normal operation of the device, and further enhances the safety during use. Attached Figure Description

[0021] Figure 1 A schematic diagram of the drilling and blasting auxiliary device used for coal pillarless opening provided by this utility model;

[0022] Figure 2 for Figure 1 One of the structural schematic diagrams of the telescopic component shown;

[0023] Figure 3 for Figure 2 The second schematic diagram of the telescopic component is shown.

[0024] Figure 4 for Figure 1 The diagram shows a cross-sectional view of the fixed component.

[0025] Numbered in the diagram: 1. Hanging plate; 2. Hinge; 3. First hanging plate; 4. Second hanging plate; 5. Support plate; 6. Electric push rod; 7. Push plate; 8. Active rod; 9. First rotating rod; 10. Second rotating rod; 20. Second support rod; 21. Second sliding rod; 22. Third rotating rod; 23. Fixed rod; 24. Third sliding rod; 25. Third support rod; 26. Fourth sliding rod; 27. Fourth support rod; 28. Fixed plate; 29. ​​Fifth support rod; 31. Fixed column; 32. Release block; 33. Telescopic block; 34. Hanging block; 61. Buffer pad. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 4 A drilling and blasting auxiliary device for pillarless mining, comprising: a lifting plate 1, a hinge 2 for rotation installed in the middle of the lifting plate 1, the lifting plate 1 being divided into a first lifting plate 3 and a second lifting plate 4 by the hinge 2, both the first lifting plate 3 and the second lifting plate 4 having grooves to provide sliding space, support plates 5 for blocking high-pressure gas inside the borehole being installed at equal intervals on the top of the lifting plate 1, and a telescopic assembly for telescopically extending the support plates 5 being installed at one end of the lifting plate 1, the telescopic assembly including: an electric push rod 6, a push plate 7, an active rod 8, and a first... Rotating rod 9 and second rotating rod 10, an electric push rod 6 is fixedly connected to one side of the hanging plate 1, an active rod 8 is fixedly connected to the output end of the electric push rod 6, the active rod 8 slides in the slide groove, a first rotating rod 9 is rotatably connected to one end of the active rod 8, a push plate 7 is fixedly connected to one end of the first rotating rod 9, a second rotating rod 10 is rotatably connected to one end of the first rotating rod 9, and the end of the first rotating rod 9 away from the second rotating rod 10 is fixedly connected to the support plate 5, a fixing component for fixing the hanging plate 1 is installed on the top of the hanging plate 1, and a buffer pad 61 is fixedly connected to the top of both the first hanging plate 31 and the second hanging plate 41;

[0029] It should be noted that the second hanging plate 41 can rotate around the hinge 2 as the rotation center. Rotating counterclockwise will open the second hanging plate 41. The sliding grooves of the first hanging plate 31 and the second hanging plate 41 are combined to form a complete sliding groove. The buffer pad 61 plays a buffering role to prevent excessive impact from damaging the device.

[0030] Please see Figure 2 and Figure 3The telescopic assembly also includes: a second support rod 20, a second sliding rod 21, a third rotating rod 22, a fixed rod 23, a third sliding rod 24, a third support rod 25, a fourth sliding rod 26, a fourth support rod 27, a fixed plate 28, and a fifth support rod 29. The second support rod 20 is rotatably connected to the middle of the first rotating rod 9. The second sliding rod 21 is installed inside the hanging plate 1. The second support rod 20 is rotatably connected to the second sliding rod 21. One end of the second sliding rod 21 is rotatably connected to the third rotating rod 22. A fixed rod 23 is rotatably connected to one side of the hanging plate 1. One end of the third rotating rod 22 is rotatably connected to the fixed rod 23. The other end of the third rotating rod 22 is fixedly connected to the support plate 5. The middle of the third rotating rod 22 is rotatably connected to the second rotating rod 10. The third sliding rod 24 is installed inside the hanging plate 1. One end of the second rotating rod 10 is rotatably connected to the third sliding rod 24. The third slide rod 24 is rotatably connected to a third support rod 25 at one end. The middle part of the fixed rod 23 is rotatably connected to the third support rod 25. A fourth slide rod 26 is installed inside the hanging plate 1. A fourth support rod 27 is rotatably connected to one end of the fourth slide rod 26. The fourth support rod 27 is rotatably connected to the fixed rod 23. A fifth support rod 29 is rotatably connected to one end of the fourth slide rod 26. A fixed plate 28 is rotatably connected to the top of the hanging plate 1. The end of the fifth support rod 29 away from the fourth slide rod 26 is rotatably connected to the fixed plate 28. The second rotating rod 10, the second support rod 20, the fixed rod 23 and the fifth support rod 29 are located in the same vertical plane. The first rotating rod 9, the third rotating rod 22, the third support rod 25 and the fourth support rod 27 are located in the same vertical plane. The fixed plate 28 and the push plate 7 have the same structural design as the support plate 5.

[0031] It should be noted that different vertical planes can prevent the components from colliding when the telescopic assembly is in operation, thus affecting the normal operation of the assembly. When drilling and blasting the top plate, the support plate 5, the fixing plate 28, and the push plate 7 are used to block the high-pressure gas inside the borehole.

[0032] Please see Figure 1 and Figure 4 The fixing components include: a fixing column 31, a release block 32, a telescopic block 33, and a hanging block 34. The two ends of the hanging plate 1 are symmetrically fixedly connected to the fixing column 31. The release block 32 is slidably connected to the outer wall of the fixing column 31. The hanging block 34 is installed on the top of the fixing column 31. The telescopic block 33 is slidably connected inside the hanging block 34. The hanging block 34 has a slide rail inside. The fixing column 31 slides in the slide rail. The diameter of the slide rail hole is larger than the diameter of the fixing column 31. The length of the slide rail is larger than the length of the fixing column 31. The top of the fixing column 31 is a hemispherical design. The top and bottom of the release block 32 are both beveled designs.

[0033] It should be noted that the length and aperture design of the slide can ensure that the fixed column 31 can be inserted into the lifting block 34 and has sufficient length to release the fixed column 31 from its limit. The hemispherical design is used to fix the fixed column 31 in the lifting block 34, thereby suspending the lifting plate 1 on the mine roof. The release block 32 is used to release the limit. Pushing the release block 32 upward will squeeze the telescopic block 33 to retract, thereby releasing the telescopic block 33 from the fixed column 31 and removing the fixed column 31 from the lifting block 34.

[0034] The working principle of the drilling and blasting auxiliary device for pillarless mining provided by this utility model is as follows:

[0035] Installation and fixing of the device:

[0036] The fixing assembly is responsible for securely installing the hanging plate 1 on the mine roof. The hanging plate 1 has symmetrical fixing posts 31 at both ends, each with a hemispherical top. During installation, the second hanging plate 41 is opened by rotating counterclockwise around the hinge 2, so that the first and second hanging plates 31 are on the same horizontal plane. The fixing posts 31 are then aligned with the slide rails inside the pre-installed hanging blocks 34 on the mine roof and inserted. Because the slide rail diameter is larger than the diameter of the fixing post 31 and its length is longer, the fixing post 31 can smoothly enter the slide rail. The hemispherical top of the fixing post 31... The body squeezes the telescopic block 33, causing it to retract within the lifting block 34. When the fixed column 31 is inserted into place, the telescopic block 33 extends and locks the bottom of the hemispherical body of the fixed column 31, thereby fixing the hanging plate 1 to the mine roof. To remove the device, the fixed column 31 is pushed up, which in turn pushes the release block 32 up. The angled design at the top of the release block 32 squeezes the telescopic block 33 to retract, releasing the restriction on the fixed column 31. The angled design between the bottom of the release block 32 and the top of the telescopic block 33 allows the fixed column 31 to be removed from the lifting block 34.

[0037] Unfold support plate 5:

[0038] The telescopic assembly is used to adjust the extension and retraction of the support plate 5, the fixed plate 28, and the push plate 7. After the electric push rod 6 is activated, its output end pushes the active rod 8 to slide in the slide groove of the hanging plate 1. The active rod 8 drives the first rotating rod 9, which is rotatably connected to it, to move horizontally along the axis of the slide groove. The second support rod 20 in the middle of the first rotating rod 9 and the second rotating rod 10, which is rotatably connected to the first rotating rod 9, also move accordingly. The second support rod 20 is rotatably connected to the second sliding rod 21, thereby driving the second sliding rod 21 to slide. The second rotating rod 10 is rotatably connected to the third sliding rod 24, thereby driving the third sliding rod 24 to slide. The third sliding rod 24 and the third support rod 25 together drive the fixed rod 23 to rotate. The rotation of the fixed rod 23 drives the fourth support rod 27, which is rotatably connected to it, to rotate. Since the fourth sliding rod 26 is rotatably connected to the fourth support rod 27, and the fourth support rod 27 drives the fourth sliding rod 26 to slide, the fifth support rod 29 is rotatably connected to the fourth support rod 27. The fourth sliding rod 26 drives one end of the fifth support rod 29 to slide. Since the fifth support rod 29 is rotatably connected to the fixed plate 28, the fourth support rod 26 drives one end of the fifth support rod 29 to slide. The sliding of the five-bracing rod 29 causes the fixed plate 28 to rotate clockwise around its rotating connection shaft with the hanging plate 1. The rotation of the fixed rod 23 causes the third supporting rod 25, which is rotatably connected to it, to rotate, so that the third supporting rod 25 rotates around the third sliding rod 24. The third supporting rod 25 causes the support plate 5, which is fixedly connected to it, to rotate clockwise. The rotation of the fixed rod 23 causes the third rotating rod 22, which is rotatably connected to it, to rotate, so that the third supporting rod 25 rotates around the second sliding rod 21. The third rotating rod 22 causes the support plate 5, which is fixedly connected to it, to rotate clockwise. Since the third rotating rod 22 is rotatably connected to the second rotating rod 10, when the third rotating rod 22 rotates, it causes the second rotating rod 10 to rotate counterclockwise around the third sliding rod 24, so that the end of the second rotating rod 10 away from the hanging plate 1 rises vertically, so that the first rotating rod 9 rotates clockwise around the active rod 8, and the push plate 7, which is fixedly connected to it, also rotates accordingly. Finally, the fixed plate 28, the two support plates 5 and the push plate 7 are parallel to the hanging plate 1, completing the entire unfolding process.

[0039] Protection process:

[0040] The buffer pads 61 on the top of the first hanging plate 3 and the second hanging plate 4 play a buffering role during the drilling and blasting of the roof plate, reducing the impact of the blasting force on the hanging plate 1. At the moment of blasting, the support plate 5, the fixing plate 28 and the push plate 7 form a protective barrier. Because they have the same structural design, they can effectively block the high-pressure gas and dust generated by the blasting, prevent them from flying into the roadway, and protect the safety of equipment and personnel in the roadway.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A drilling and blasting auxiliary device for pillarless mining, characterized by, Include: hanging plate (1), the middle of hanging plate (1) is provided with a hinge (2) for rotation, hanging plate (1) is divided into first hanging plate (3) and second hanging plate (4) by hinge (2), first hanging plate (3) and second hanging plate (4) are both provided with sliding slot for providing sliding space; Support plate (5), the top of hanging plate (1) is provided with support plate (5) for blocking high-pressure gas in the borehole at equal intervals; Telescopic assembly, one end of hanging plate (1) is provided with telescopic assembly for telescopic support plate (5), telescopic assembly includes: electric push rod (6), push plate (7), driving rod (8), first rotary rod (9) and second rotary rod (10), one side of hanging plate (1) is fixedly connected with electric push rod (6), the output end of electric push rod (6) is fixedly connected with driving rod (8), driving rod (8) slides in sliding slot, one end of driving rod (8) is rotatably connected with first rotary rod (9), one end of first rotary rod (9) is fixedly connected with push plate (7), one end of first rotary rod (9) is rotatably connected with second rotary rod (10), the end, away from second rotary rod (10), of first rotary rod (9) is fixedly connected with support plate (5); Fixing assembly, the top of hanging plate (1) is provided with fixing assembly for fixing hanging plate (1).

2. The borehole blasting assist device for coal pillar free mining according to claim 1, characterized in that, Telescopic assembly further includes: second support rod (20), second sliding rod (21), third rotary rod (22), fixed rod (23), third sliding rod (24), third support rod (25), fourth sliding rod (26), fourth support rod (27), fixed plate (28) and fifth support rod (29), the middle of first rotary rod (9) is rotatably connected with second support rod (20), the inside of hanging plate (1) is provided with second sliding rod (21), second support rod (20) is rotatably connected with second sliding rod (21), one end of second sliding rod (21) is rotatably connected with third rotary rod (22), one side of hanging plate (1) is rotatably connected with fixed rod (23), one end of third rotary rod (22) is rotatably connected with fixed rod (23), the other end of third rotary rod (22) is fixedly connected with support plate (5), the middle of third rotary rod (22) is rotatably connected with second rotary rod (10), the inside of hanging plate (1) is provided with third sliding rod (24), one end of second rotary rod (10) is rotatably connected with third sliding rod (24), one end of third sliding rod (24) is rotatably connected with third support rod (25), the middle of fixed rod (23) is rotatably connected with third support rod (25), the inside of hanging plate (1) is provided with fourth sliding rod (26), one end of fourth sliding rod (26) is rotatably connected with fourth support rod (27), fourth support rod (27) is rotatably connected with fixed rod (23), one end of fourth sliding rod (26) is rotatably connected with fifth support rod (29), the top of hanging plate (1) is rotatably connected with fixed plate (28), the end, away from fourth sliding rod (26), of fifth support rod (29) is rotatably connected with fixed plate (28).

3. The borehole blasting assist device for coal pillar free mining according to claim 1, characterized in that, The fixed assembly comprises a fixed column (31), a release block (32), a telescopic block (33) and a hanging block (34), the hanging plate (1) is symmetrically and fixedly connected with the fixed columns (31) at both ends, the outer wall of the fixed column (31) is slidably connected with the release block (32), the top of the fixed column (31) is provided with the hanging block (34), the inside of the hanging block (34) is slidably connected with the telescopic block (33), the inside of the hanging block (34) is provided with a slide, and the fixed column (31) slides in the slide.

4. The borehole blasting assist device for coal pillar free mining according to claim 2, characterized in that, The second rotating rod (10), the second supporting rod (20), the fixed rod (23) and the fifth supporting rod (29) are located in the same vertical plane, and the first rotating rod (9), the third rotating rod (22), the third supporting rod (25) and the fourth supporting rod (27) are located in the same vertical plane.

5. The borehole blasting assist device for coal pillar free mining according to claim 2, characterized in that, The fixed plate (28) and the push plate (7) have the same structural design as the supporting plate (5).

6. The borehole blasting assist device for coal pillar free mining according to claim 1, characterized in that, The first hanging plate (3) and the second hanging plate (4) are both fixedly connected with the buffer pads (61) at the top.

7. The borehole blasting assist device for coal pillar free mining according to claim 3, characterized in that, The diameter of the slide is greater than the diameter of the fixed column (31), and the length of the slide is greater than the length of the fixed column (31).

8. The borehole blasting assist device for coal pillar free mining according to claim 3, characterized in that, The top of the fixed column (31) is designed as a semispherical body, and the top and the bottom of the release block (32) are both designed as inclined angles.

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