Coal mine rock burst pressure relief device with good protection performance

Abstract

The utility model discloses a coal mine rock burst pressure relief device which is good in protection performance. The coal mine rock burst pressure relief device comprises a first threaded column, a supporting column and a first adjusting threaded sleeve. According to the coal mine rock burst pressure relief device with the good protection performance, a first threaded column is inserted into a supporting column, the supporting column is hollow, the outer side of the first threaded column is in threaded connection with two first adjusting threaded sleeves, and the first threaded column is matched with the first adjusting threaded sleeves to support the supporting column; a second threaded column is matched with a second adjusting threaded sleeve and a guide sleeve to support a supporting table, so that the pressure relief device body is supported, the position of a first threaded sleeve on the first threaded column can be adjusted through rotation of the first adjusting threaded sleeve, the supporting height of the supporting column is controlled, and the supporting height of the supporting column is controlled through rotation of the second adjusting threaded sleeve. And the downward extending length of the second threaded column is controlled to synchronously support the supporting table, so that the overall supporting height of the pressure relief device body is controlled, and the pressure relief device is suitable for supporting protection of spaces with different heights.

Description

Technical Field

[0001] The utility model relates to the field of rock burst pressure relief, in particular to a coal mine rock burst pressure relief device with good protection. Background Art

[0002] Rock burst is the sudden destruction, collapse or ejection of coal and rock masses caused by the release of deformation energy under certain high stress conditions during coal mining, accompanied by loud noises and rock vibrations, which often cause support damage, roof collapse, tunnel blockage and casualties.

[0003] In existing coal mines, rock bursts are avoided by drilling holes. Due to the effect of stress concentration at the hole edge, the stress of the coal body within a certain range around the borehole is greatly reduced to form a pressure relief zone. When the pressure relief holes are reasonably arranged in the coal body, the pressure relief zones of the boreholes are interconnected and connected to form a weakened zone, which destroys the bearing structure of the coal body and causes the coal body to slide relatively under the clamping action of the top and bottom rock layers. The friction angle and cohesion in the interface between the coal body and the rock layer are greatly reduced, and the range of the stress balance zone in the coal body is significantly increased, so that the peak position is transferred to the deep part of the coal body and the peak value gradually decreases. The stress of the coal body in the limit balance zone is greatly reduced, which destroys the stress conditions for rock bursts and reduces the impact risk of the coal rock body.

[0004] In the prior art with the publication (announcement) number: CN221169652U and the publication (announcement) date: 2024-06-18, a protective coal mine rock burst pressure relief device is proposed, including a pressure relief device, the pressure relief device includes a support platform, a support top plate, a shock absorbing layer, a thermal insulation layer, a protective steel plate, a support column, a fixed base, an electric push rod, a placement box, a battery, an electric heating lamp, a switch door and an equipment placement area, the support top plate is installed on the top of the support platform, the shock absorbing layer is installed on the top of the support top plate, the thermal insulation layer is installed on the top of the shock absorbing layer, the protective steel plate is installed on the top of the thermal insulation layer, the support column is installed on the bottom of the support top plate, the electric push rod is installed inside the support platform, the placement box is installed on the side of the electric push rod, the battery is installed inside the support platform, and the electric heating lamp is installed on the top of the support platform. The protective coal mine rock burst pressure relief device with good protection improves the safety of the overall device by installing a top protection structure on the top of the support platform, and installs an auxiliary structure inside the support platform to improve the practicality of the overall device.

[0005] Although the above-mentioned existing technology can provide good support and protection effects, its supporting column length is fixed during use and cannot adapt well to the support of spaces at different heights. Therefore, a new coal mine impact ground pressure relief device with good protection is proposed to optimize the above-mentioned existing technology. Utility Model Content

[0006] The utility model aims to provide a coal mine rock burst pressure relief device with good protection to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A coal mine rock burst pressure relief device with good protection comprises a pressure relief device body, wherein the pressure relief device body comprises a support platform, a support top plate, a shock absorbing layer, a thermal insulation layer, a protective steel plate and a support column, wherein the shock absorbing layer is fixedly connected to the top surface of the support top plate, the thermal insulation layer is fixedly connected to the top surface of the shock absorbing layer, the protective steel plate is fixedly connected to the top surface of the thermal insulation layer, the support platform and the support column are both fixedly connected to the bottom surface of the support top plate, the support top plate is used for top support, the shock absorbing layer is used for shock absorbing and isolating protection, the interior of the device is composed of a plurality of springs and dampers, and the protective steel plate is used for the topmost rigid support and protection, such a top protection structure can effectively ensure the protection of the top support, so that once personnel encounter a crisis situation, they can hide in the device to ensure their safety, thereby achieving the work of top pressure relief and improving the safety of the overall device. There are two groups of support columns arranged in parallel and symmetrically, and a pad is commonly provided under the corresponding support columns. The top surface of the pad is fixedly connected with a first threaded column at the corresponding support column, the first threaded column is inserted into the support column, the support column is hollow, the outer side of the first threaded column is threadedly connected with two first adjusting threaded sleeves, the outer side of the first adjusting threaded sleeve is fixedly connected with a first turning handle, the bottom of both sides of the support platform are symmetrically fixedly connected with a guide sleeve, the guide sleeve is slidably connected with a second threaded column matched with it, the bottom end of the second threaded column is fixedly connected with a foot, the outer side of the second threaded column is threadedly connected with a second adjusting threaded sleeve matched with it, and the second adjusting threaded sleeve is rotatably connected to the bottom surface of the guide sleeve.

[0009] As a further solution of the utility model: a convex key is provided on the inner side of the guide sleeve, a key slot is provided on the side wall of the second threaded column, and the convex key is inserted into the key slot and is slidably connected with the key slot.

[0010] As a further solution of the utility model: the top of the support platform is slidably connected to a storage box, a mobile power supply is fixedly embedded on one side of the middle of the support platform, an electric heating lamp is fixedly installed on the other side of the middle of the support platform, and an equipment placement area is provided at the bottom of the support platform. An independent equipment placement area is provided for placing drilling rigs or other mechanical equipment, which facilitates storage.

[0011] As a further solution of the utility model: one side of the storage box is extended out of the support platform and fixedly connected with a handle, the other side of the storage box is fixedly embedded with a magnet, and the support platform is fixedly embedded with an iron sheet at the magnet, and the iron sheet is magnetically connected to the magnet. The storage box can be easily pulled out with the cooperation of the handle, and the storage fixing effect is formed by the cooperation of the magnet and the iron sheet. People can store some water and food inside the storage box, so that once the people encounter a dangerous situation, they can temporarily hide near the device and wait for rescue work from outside personnel. The mobile power supply is used for energy storage and power supply, and the electric heating lamp releases light energy and heat energy, so that the people can ensure a certain light adjustment to avoid hypothermia. This auxiliary structure ensures the survival ability of the people once they encounter a dangerous situation, which improves the practicality of the overall device. The electric heating lamp has its own switch, and the electric heating lamp is electrically connected to the mobile power supply through a wire.

[0012] As a further solution of the utility model: sleeves are symmetrically and equidistantly fixedly connected to the support columns, and a protective net is commonly provided between the four corresponding sleeves on two adjacent support columns.

[0013] As a further solution of the utility model: a fixing frame is fixedly connected to the outer side of the protective net, an L-shaped threaded connecting rod is fixedly connected to the corresponding sleeve of the fixing frame, and one end of the L-shaped threaded connecting rod passes through the sleeve and is threadedly connected to a fixing nut.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model forms support for the support column by means of a first threaded column cooperating with a first adjusting threaded sleeve, and forms support for the support platform by means of a second threaded column cooperating with a second adjusting threaded sleeve and a guide sleeve, so that the main body of the pressure relief device is supported. The position of the first threaded sleeve on the first threaded column can be adjusted by rotating the first adjusting threaded sleeve to control the support height of the support column. The downward extending length of the second threaded column can be controlled by rotating the second adjusting threaded sleeve to form synchronous support for the support platform, thereby controlling the overall support height of the main body of the pressure relief device, and being suitable for support protection in spaces of different heights.

[0016] 2. The utility model uses a sleeve in conjunction with an L-shaped threaded connecting rod to suspend and install the protective net on the side of the support column, and locks and fixes it with a fixing nut, thereby forming protection on the side of the device and further improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The diagram is a structural diagram of a coal mine rock burst pressure relief device with good protection.

[0018] Figure 2 The figure is a side view of a coal mine rock burst pressure relief device with good protection.

[0019] Figure 3 This is a diagram showing the support columns in a coal mine rock burst pressure relief device with good protection.

[0020] Figure 4 This is a diagram showing the support platform of a coal mine rock burst pressure relief device with good protection.

[0021] Figure 5 This is a diagram showing a guide sleeve in a coal mine rock burst pressure relief device with good protection.

[0022] In the figure: 1. Pressure relief device body; 2. Support platform; 3. Support top plate; 4. Shock-absorbing layer; 5. Insulation layer; 6. Protective steel plate; 7. Support column; 8. Pad; 9. First threaded column; 10. First adjusting threaded sleeve; 11. First turning handle; 12. Guide sleeve; 13. Second threaded column; 14. Pad; 15. Second adjusting threaded sleeve; 16. Key; 17. Keyway; 18. Storage box; 19. Mobile power supply; 20. Electric heating lamp; 21. Instrument placement area; 22. Handle; 23. Magnet; 24. Iron sheet; 25. Sleeve; 26. Protective net; 27. Fixed frame; 28. L-shaped threaded connecting rod; 29. ​​Fixing nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 5In the embodiment of the utility model, a coal mine impact ground pressure relief device with good protection includes a pressure relief device body 1, and the pressure relief device body 1 includes a support platform 2, a support top plate 3, a shock-absorbing layer 4, a thermal insulation layer 5, a protective steel plate 6 and a support column 7. The shock-absorbing layer 4 is fixedly connected to the top surface of the support top plate 3, the thermal insulation layer 5 is fixedly connected to the top surface of the shock-absorbing layer 4, and the protective steel plate 6 is fixedly connected to the top surface of the thermal insulation layer 5. The support platform 2 and the support column 7 are both fixedly connected to the bottom surface of the support top plate 3, and the top support is performed by the support top plate 3, and the shock-absorbing layer 4 is used for shock-absorbing isolation protection. The interior thereof is composed of a plurality of springs and dampers, and the protective steel plate 6 is used for the topmost rigid support and protection. This top protection structure can effectively ensure the protection of the top support, so that once personnel encounter a crisis, they can hide in the device to ensure the safety of the personnel, play the role of top pressure relief, and improve the safety of the overall device. There are two groups of support columns 7 arranged in parallel and symmetrically, and a pad 8 is commonly provided below the corresponding support columns 7. The top surface of the pad 8 is fixedly connected with a first threaded column 9 at the corresponding support column 7. The first threaded column 9 is inserted into the support column 7. The support column 7 is hollow. The outer side of the first threaded column 9 is threadedly connected with two first adjusting threaded sleeves 10, and the outer side of the first adjusting threaded sleeve 10 is fixedly connected with a first turning handle 11. The bottom of both sides of the support platform 2 are symmetrically fixedly connected with a guide sleeve 12, and a second threaded column 13 matched with it is slidably connected in the guide sleeve 12, and a foot 14 is fixedly connected to the bottom end of the second threaded column 13, and a second adjusting threaded sleeve 15 matched with it is threadedly connected to the outer side of the second threaded column 13. The second adjusting threaded sleeve 15 is rotatably connected to the bottom surface of the guide sleeve 12, and the outer side of the second adjusting threaded sleeve 15 is fixedly connected with a second turning handle.

[0025] The support column 7 is supported by the first threaded column 9 in cooperation with the first adjusting threaded sleeve 10, and the support platform 2 is supported by the second threaded column 13 in cooperation with the second adjusting threaded sleeve 15 and the guide sleeve 12, so that the pressure relief device body 1 is supported. The position of the first threaded sleeve 10 on the first threaded column 9 can be adjusted by rotating the first adjusting threaded sleeve 10 to control the support height of the support column 7. The downward extension length of the second threaded column 13 can be controlled by rotating the second adjusting threaded sleeve 15 to form a synchronous support for the support platform 2, thereby controlling the overall support height of the pressure relief device body 1, which is suitable for support protection in spaces of different heights.

[0026] Two first threaded sleeves 10 are provided, and two adjacent first threaded sleeves 10 jointly support the support column 7, making the support more stable. The bottom ends of the first threaded columns 9 are commonly connected with a pad 8 to form a larger support area, thereby improving the support stability and avoiding sinking due to a small support force area.

[0027] A convex key 16 is provided on the inner side of the guide sleeve 12, and a key slot 17 is provided on the side wall of the second threaded column 13. The convex key 16 is inserted into the key slot 17 and is slidably connected with the key slot 17. The cooperation between the convex key 16 and the key slot 17 limits the rotation of the guide sleeve 12 and the second threaded column 13, forming a vertical sliding effect.

[0028] A storage box 18 is slidably connected to the top of the support platform 2, a mobile power supply 19 is fixedly embedded on one side of the middle of the support platform 2, an electric heating lamp 20 is fixedly installed on the other side of the middle of the support platform 2, and an instrument placement area 21 is provided at the bottom of the support platform 2. An independent instrument placement area 21 is provided for placing drilling rigs or other mechanical equipment, which facilitates storage.

[0029] One side of the storage box 18 extends out of the support platform 2 and is fixedly connected with a handle 22. The other side of the storage box 18 is fixedly embedded with a magnet 23. The support platform 2 is fixedly embedded with an iron sheet 24 corresponding to the magnet 23, and the iron sheet 24 is magnetically connected to the magnet 23. The storage box 18 can be easily pulled out with the cooperation of the handle 22, and the storage fixing effect is formed by the cooperation of the magnet 23 and the iron sheet 24. People can store some water and food inside the storage box 18, so that once the people encounter a dangerous situation, they can temporarily hide near the device and wait for the rescue work of external personnel. The mobile power supply 19 is used for energy storage and power supply, and the electric heating lamp 20 releases light energy and heat energy, so that the people can ensure a certain light adjustment to avoid hypothermia. This auxiliary structure ensures the survival ability of the people once they encounter a dangerous situation, which improves the practicality of the overall device. The electric heating lamp 20 has its own switch, and the electric heating lamp 20 is electrically connected to the mobile power supply 19 through a wire.

[0030] The support columns 7 are all symmetrically and equidistantly fixedly connected with sleeves 25 , and a protective net 26 is commonly provided between the four sleeves 25 corresponding to two adjacent support columns 7 .

[0031] A fixing frame 27 is fixedly connected to the outer side of the protection net 26 , and an L-shaped threaded connecting rod 28 is fixedly connected to the corresponding sleeve 25 of the fixing frame 27 . One end of the L-shaped threaded connecting rod 28 passes through the sleeve 25 and is threadedly connected to a fixing nut 29 .

[0032] The protective net 26 is suspended and installed on the side of the support column 7 through the sleeve 25 and the L-shaped threaded connecting rod 28, and is locked and fixed with the fixing nut 29, so as to form protection on the side of the device and further improve the protection effect.

[0033] The working principle of the utility model is:

[0034] When in use, the pressure relief device body 1 is supported on the ground by the pad 8. At this time, the support platform 2 is supported by the second threaded column 13 and the pad foot 14. At this time, the fixing frame 27 can be placed corresponding to the sleeve 25, so that the L-shaped threaded connecting rod 28 is suspended on the sleeve 25 and locked and fixed by the fixing nut 29. At this time, the first adjusting threaded sleeve 10 is rotated in turn to support the support column 7, so that the support top plate 3 is lifted up, so that the protective steel plate 6 is against the top surface of the support position. At this time, the second adjusting threaded sleeve 15 is further rotated, and the second threaded column 13 is extended downward with the cooperation of the convex key 16 and the keyway 17 in the guide sleeve 12, thereby driving the pad foot 14 to rest on the ground, forming support for the support platform 2, so that the device as a whole is supported.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mine rock burst pressure relief device with good protection, comprising a pressure relief device body (1), characterized in that: The pressure relief device body (1) comprises a support platform (2), a support top plate (3), a shock-absorbing layer (4), a thermal insulation layer (5), a protective steel plate (6) and a support column (7); the shock-absorbing layer (4) is fixedly connected to the top surface of the support top plate (3); the thermal insulation layer (5) is fixedly connected to the top surface of the shock-absorbing layer (4); the protective steel plate (6) is fixedly connected to the top surface of the thermal insulation layer (5); the support platform (2) and the support column (7) are both fixedly connected to the bottom surface of the support top plate (3); two groups of support columns (7) are arranged in parallel and symmetrically; a pad (8) is commonly arranged below the corresponding support columns (7); a first threaded column (9) is fixedly connected to the top surface of the pad (8) at the corresponding support column (7); and the first threaded column (9) is fixedly connected to the top surface of the pad (8) at the corresponding support column (7). The column (9) is inserted into the support column (7), and the support column (7) is hollow. The outer side of the first threaded column (9) is threadedly connected to two first adjusting threaded sleeves (10), and the outer side of the first adjusting threaded sleeve (10) is fixedly connected to a first turning handle (11). The bottoms of both sides of the support platform (2) are symmetrically fixedly connected to guide sleeves (12), and a second threaded column (13) adapted thereto is slidably connected inside the guide sleeve (12), and a pad (14) is fixedly connected to the bottom end of the second threaded column (13), and a second adjusting threaded sleeve (15) adapted thereto is threadedly connected to the outer side of the second threaded column (13), and the second adjusting threaded sleeve (15) is rotatably connected to the bottom surface of the guide sleeve (12).

2. A coal mine rock burst pressure relief device with good protection according to claim 1, characterized in that: A convex key (16) is provided on the inner side of the guide sleeve (12), a key slot (17) is provided on the side wall of the second threaded column (13), and the convex key (16) is inserted into the key slot (17) and is slidably connected with the key slot (17).

3. A coal mine rock burst pressure relief device with good protection according to claim 1, characterized in that: The top of the support platform (2) is slidably connected to a storage box (18), a mobile power source (19) is fixedly embedded on one side of the middle of the support platform (2), an electric heating lamp (20) is fixedly installed on the other side of the middle of the support platform (2), and an instrument placement area (21) is provided at the bottom of the support platform (2).

4. A coal mine rock burst pressure relief device with good protection according to claim 3, characterized in that: One side of the storage box (18) extends out of the support platform (2) and is fixedly connected to a handle (22); the other side of the storage box (18) is fixedly embedded with a magnet (23); an iron sheet (24) is fixedly embedded at a position of the support platform (2) corresponding to the magnet (23); the iron sheet (24) is magnetically connected to the magnet (23).

5. The device for relieving coal mine rock burst with good protection according to claim 1, characterized in that: The support columns (7) are all symmetrically and equidistantly fixedly connected with sleeves (25), and a protective net (26) is provided between the four corresponding sleeves (25) on two adjacent support columns (7).

6. A coal mine rock burst pressure relief device with good protection according to claim 5, characterized in that: The outer side of the protective net (26) is fixedly connected to a fixing frame (27), and the corresponding sleeves (25) of the fixing frame (27) are fixedly connected to L-shaped threaded connecting rods (28), and one end of the L-shaped threaded connecting rod (28) passes through the sleeve (25) and is then threadedly connected to a fixing nut (29).

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