Temporary roadway reinforcing and supporting device for coal mining

Abstract

The invention discloses a roadway temporary reinforcing and supporting device for coal mining, and relates to the technical field of roadway supporting, the roadway temporary reinforcing and supporting device comprises two fixing frames, first hydraulic cylinders are fixedly connected to the front ends and the rear ends of the tops of the two fixing frames, and two first guide rails are arranged at the output ends of the four first hydraulic cylinders correspondingly; a movable plate is arranged between the two first guide rails, first threaded rods are slidably connected to the two sides of the interior of the rotating sleeve, side plates are fixedly connected to the opposite sides of the two first guide rails, a support is fixedly connected to the tops of the two first guide rails, and extension rails are fixedly connected to one ends of the two connecting rails; according to the roadway temporary reinforcing and supporting device for coal mining, the front section of a mine tunnel is firstly supported, and after supporting is completed, the roadway temporary reinforcing and supporting device gradually extends towards the inner side of the mine tunnel for supporting, so that safety is improved, and the accident probability of the mine tunnel is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mine roadway support, and specifically to a temporary reinforcement and support device for mine roadways used in coal mine excavation. Background Technique

[0002] Coal mines are important energy sources and important industrial raw materials in our country. China has rich coal reserves, and coal mine excavation is an important industry in our country. Since surface coal mines only account for a very small part of coal mine resources, it is necessary to excavate coal mines underground. A large number of roadways will be generated during coal mine excavation. These roadways lack necessary support due to the excavation of underlying supports and are prone to collapse incidents. Therefore, it is necessary to manually lay support equipment for support.

[0003] Especially during the use of some mine roadways, there is a risk of collapse. Especially when there are phenomena such as falling rocks and water leakage in some mine roadways, it is necessary to urgently carry out temporary reinforcement and support for the mine roadways. Traditional support equipment mainly uses wooden board brackets to support the mine roadways. However, the time for temporarily building the framework is insufficient, and building the framework inside the risky mine roadways poses a greater hazard to the safety of workers. Summary of the Invention

[0004] The purpose of the present invention is to provide a temporary reinforcement and support device for mine roadways used in coal mine excavation to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A temporary reinforcement and support device for mine roadways used in coal mine excavation, including two fixed frames. At the front and rear ends of the tops of the two fixed frames, first hydraulic cylinders are fixedly connected. The output ends of the four first hydraulic cylinders are respectively provided with two first guide rails. The tops of the output ends of the four first hydraulic cylinders are fixedly connected to the bottoms of the two first guide rails. A moving plate is arranged between the two first guide rails. A fixed arm is fixedly connected to the rear side of the moving plate. First support blocks are fixedly connected to both ends of the fixed arm. Rotating shafts are rotatably connected to both sides inside the first support blocks. Guide gears are fixedly connected to the outer sides of the two rotating shafts. An installation groove is formed in the front side inside the moving plate. Support sleeves are fixedly connected to both sides inside the installation groove. A rotating sleeve is rotatably connected inside the two support sleeves. First threaded rods are slidably connected to both sides inside the rotating sleeve. Connecting plates are arranged at the mutually remote ends of the two first threaded rods. Second support blocks are fixedly connected to one side of the two connecting plates. Connecting rails are fixedly connected to the front ends of the two first guide rails. Side plates are fixedly connected to the opposite sides of the two first guide rails.

[0006] Preferably, second motors are fixedly connected to both sides of the top of the first support block. The output ends of the two second motors are respectively fixedly connected to two rotating shafts. The two first support blocks are respectively slidably connected inside two first guide rails. A bracket is fixedly connected to the top of the two first guide rails. Extension rails are fixedly connected to one ends of the two connecting rails. Reinforcing frames are fixedly connected to the bottoms of the two extension rails. A guide toothed plate is fixedly connected to one side inside the first guide rail. The two guide gears are respectively meshed and connected to one side of the guide toothed plate. By starting the second motor to drive the rotating shaft to rotate, and the rotating shaft drives the guide gear to rotate, so that the guide gear moves horizontally under the meshing condition of the guide toothed plate when rotating.

[0007] Preferably, guide grooves are integrally formed on both sides inside the rotating sleeve. Sliders are fixedly connected to both sides of the opposite ends of the two first threaded rods. The four sliders are respectively slidably connected inside the two guide grooves and are adapted to the two guide grooves. First motors are fixedly connected to the inside of the moving plate mounting grooves. The output end of the first motor is fixedly connected to a driving gear. A driven gear is fixedly connected to the outside of the rotating sleeve. The driving gear is meshed and connected to the driven gear. A cover plate is fixedly connected to the top of the moving plate mounting groove. By starting the first motor to drive the driving gear to rotate, the driving gear rotates to drive the driven gear to rotate, and drives the rotating sleeve to rotate, and the guide grooves on both sides inside the rotating sleeve limit the sliders, thereby driving the first threaded rod to rotate.

[0008] Preferably, threaded sleeves are fixedly connected to both sides inside the moving plate. The two first threaded rods respectively penetrate through the two threaded sleeves and are threadedly connected to the two threaded sleeves. When the rotating sleeve drives the first threaded rod to rotate, the threaded sleeve limits the first threaded rod, so that the first threaded rod moves horizontally when rotating.

[0009] Preferably, rotating rings are rotatably connected to one ends of the two first threaded rods close to the two connecting plates. The two rotating rings are respectively fixedly connected to the two connecting plates. Two limiting rods are fixedly connected to one side of the two connecting plates. The four limiting rods respectively penetrate through the two side walls of the moving plate and are slidably connected to the moving plate. The connecting plates are limited by the limiting rods to maintain the stability of the connecting plates when moving.

[0010] Preferably, support wheels are rotatably connected to both sides inside the two second support blocks. The two second support blocks are respectively slidably connected inside the two first guide rails. The two second support blocks are respectively adapted to the two connecting rails. The four support wheels respectively correspond to the two connecting rails.

[0011] Preferably, sliding rails are fixedly connected to both the front and rear sides of the bottom of the moving plate. Second threaded rods are rotatably connected to the interiors of the two sliding rails. A fourth motor is fixedly connected to one end of each sliding rail. The output end of the fourth motor is fixedly connected to the second threaded rod. The threading directions of the two ends of the two second threaded rods are opposite. Moving blocks are threadedly connected to both ends of the two second threaded rods. The four moving blocks are respectively slidably connected to both sides of the interiors of the two sliding rails, such that the rotation of the second threaded rods drives the two moving blocks to move in opposite directions.

[0012] Preferably, connecting blocks are fixedly connected to the bottoms of the four moving blocks. Second hydraulic cylinders are fixedly connected to the bottoms of the four connecting blocks. The output ends of the four second hydraulic cylinders are fixedly connected to moving wheels. Support plates are fixedly connected to the outsides of the four second hydraulic cylinders. Support springs are fixedly connected to the bottoms of the four support plates. The bottom ends of the four support springs are respectively fixedly connected to the four moving wheels, and the support springs start to support the moving wheels.

[0013] Preferably, third threaded rods are rotatably connected to the interiors of the two side plates. A third motor is fixedly connected to one end of the inner walls of the two side plates. The output end of the third motor is fixedly connected to the third threaded rod. The threading directions of the two ends of the two third threaded rods are opposite. Four fixing blocks are fixedly connected to the opposite sides of the two first guide rails. Support arms are rotatably connected to the outsides of the four fixing blocks. Two side support plates are arranged on one side of each of the two side plates. One end of each of the four support arms is respectively hinged to the two side support plates. The four support arms are arranged in pairs facing each other, such that when the guide rod swings, it drives the side support plates to move outward and contact and support the inner wall of the mine tunnel.

[0014] Preferably, two cross-moving blocks are threadedly connected to both ends of the outside of each of the third threaded rods. The four cross-moving blocks are respectively slidably connected to both sides of the interiors of the two side plates. Guide rods are fixedly connected to both the upper and lower sides of the four cross-moving blocks. Chutes are formed inside the four support arms. The four guide rods respectively penetrate through the four chutes and are slidably connected to the four guide rods. The chutes limit and guide the guide rods to push the support arms to swing.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this application, the fixing frame is placed at the entrance of the mine tunnel. Then, multiple first hydraulic cylinders are activated to lift the first guide rail upward by the first hydraulic cylinders, causing the first guide rail to drive the third motor into contact with the top wall of the mine tunnel to support the mine tunnel. Next, the third motor is activated to drive the third threaded rod to rotate, thereby driving the transverse blocks on both sides to move relatively, causing the transverse blocks to drive the guide rods to move. By the guide rods moving inside the sliding grooves, the support arms on both sides are pushed to swing synchronously, so that the support arms on both sides drive the side support plates to move outward while maintaining a horizontal state, and further enabling the side support plates to contact the side walls of the mine tunnel to support the side walls of the mine tunnel and improve the stability of the front section of the mine tunnel.

[0017] 2. In this application, the first motor is activated to drive the driving gear to rotate, and the driving gear rotates to drive the driven gear to rotate, thereby driving the rotating sleeve to rotate. During the rotation of the rotating sleeve, the guide grooves on both sides inside it limit the sliders, thereby driving the first threaded rod to rotate. When the two first threaded rods rotate, since the threaded sleeve is threadedly connected to the first threaded rod, the first threaded rod moves horizontally during the rotation inside the threaded sleeve, causing the first threaded rod to push the rotating ring and the second support block to move to both sides. When the connecting plate moves, it pushes the second support block to move horizontally to both sides, so that the second support block continues to move into the extension rail under the push of the moving plate, thereby expanding the protection range. When the second support block moves to the position of the through groove opened at the front end of the extension rail, the first motor continues to be activated to drive the rotating sleeve to rotate, causing the rotating sleeves on both sides to be pushed by the first threaded rod and pushed into the through grooves on both sides of the extension rail, enabling the second support blocks on both sides to support the inner wall of the mine tunnel and improving the support range.

[0018] 3. In this application, two second hydraulic cylinders drive two moving wheels to move to both sides, and then the second hydraulic cylinders are activated to drive the moving wheels to descend, causing the moving wheels to contact the bottom of the mine tunnel to support the bottom of the moving plate, improving the stability of the moving plate, which is beneficial for temporarily and emergently supporting the mine tunnel and first supporting the front section of the mine tunnel. After the support is completed, it gradually extends the support towards the inner side of the mine tunnel to improve safety and greatly reduce the probability of mine tunnel accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present invention;

[0020] Figure 2 is the side view structural schematic diagram of the present invention;

[0021] Figure 3 is the structural schematic diagram of the fixing frame of the present invention;

[0022] Figure 4 is the structural schematic diagram of the moving plate of the present invention;

[0023] Figure 5 Structural schematic diagram of the fixed arm of the present invention;

[0024] Figure 6 Structural schematic diagram of the cover plate of the present invention;

[0025] Figure 7 Structural schematic diagram of the rotating sleeve of the present invention;

[0026] Figure 8 Structural schematic diagram of the slider of the present invention;

[0027] Figure 9 Structural schematic diagram of the moving block of the present invention;

[0028] Figure 10 Structural schematic diagram of the side plate of the present invention;

[0029] Figure 11 Structural schematic diagram of the support arm of the present invention;

[0030] Figure 12 Structural schematic diagram of the second support block of the present invention;

[0031] Figure 13 Structural schematic diagram of the first support block of the present invention;

[0032] Figure 14 Structural schematic diagram of the guide tooth plate of the present invention.

[0033] Reference numerals in the figure: 1, fixed frame; 2, first hydraulic cylinder; 3, first guide rail; 4, moving plate; 5, fixed arm; 6, first support block; 7, guide gear; 8, rotating shaft; 9, guide tooth plate; 10, support sleeve; 11, rotating sleeve; 12, first motor; 13, driving gear; 14, driven gear; 15, first threaded rod; 16, connecting plate; 17, second support block; 18, rotating ring; 19, limiting rod; 20, support wheel; 21, threaded sleeve; 22, slider; 23, guide groove; 24, slide rail; 25, second threaded rod; 26, moving block; 27, connecting block; 28, second hydraulic cylinder; 29, support spring; 30, support plate; 31, moving wheel; 32, connecting rail; 33, side plate; 34, fixed block; 35, support arm; 36, third threaded rod; 37, transverse moving block; 38, guide rod; 39, chute; 40, side support plate; 41, second motor; 42, third motor; 43, fourth motor; 44, cover plate; 45, bracket; 46, reinforcing frame; 47, extension rail. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment: As Figures 1-14 shown, the present invention provides a technical solution for a temporary reinforcement support device for a roadway in coal mine development, including two fixing frames 1. At the front and rear ends of the tops of the two fixing frames 1, first hydraulic cylinders 2 are fixedly connected. The output ends of the four first hydraulic cylinders 2 are respectively provided with two first guide rails 3. The tops of the output ends of the four first hydraulic cylinders 2 are respectively fixedly connected to the bottoms of the two first guide rails 3. A moving plate 4 is arranged between the two first guide rails 3. A fixing arm 5 is fixedly connected to the rear side of the moving plate 4. First support blocks 6 are fixedly connected to both ends of the fixing arm 5. Rotating shafts 8 are rotatably connected to both sides inside the first support blocks 6. Guide gears 7 are fixedly connected to the outer sides of the two rotating shafts 8. Second motors 41 are fixedly connected to both sides of the tops of the two first support blocks 6. The output ends of the two second motors 41 are respectively fixedly connected to the two rotating shafts 8. The two first support blocks 6 are respectively slidably connected inside the two first guide rails 3. An installation groove is formed in the front side inside the moving plate 4. Support sleeves 10 are fixedly connected to both sides inside the installation groove. A rotating sleeve 11 is rotatably connected inside the two support sleeves 10. First threaded rods 15 are slidably connected to both sides inside the rotating sleeve 11. Connecting plates 16 are arranged at the mutually remote ends of the two first threaded rods 15. Second support blocks 17 are fixedly connected to one side of the two connecting plates 16. Connecting rails 32 are fixedly connected to the front ends of the first guide rails 3. Side plates 33 are fixedly connected to the opposite sides of the two first guide rails 3. A bracket 45 is fixedly connected to the tops of the two first guide rails 3. Extension rails 47 are fixedly connected to one end of the two connecting rails 32. Reinforcing frames 46 are fixedly connected to the bottoms of the two extension rails 47. A guide tooth plate 9 is fixedly connected to one side inside the first guide rail 3. The two guide gears 7 are both meshed with one side of the guide tooth plate 9. By starting the second motor 41 to drive the rotating shaft 8 to rotate, and making the rotating shaft 8 drive the guide gear 7 to rotate, the guide gear 7 can perform horizontal movement under the meshing condition of the guide tooth plate 9 when rotating.

[0036] On both sides inside the rotating sleeve 11, guide grooves 23 are integrally formed. On both sides of the opposite ends of the two first threaded rods 15, sliders 22 are fixedly connected. The four sliders 22 are respectively slidably connected inside the two guide grooves 23 and are adapted to the two guide grooves 23. Inside the installation grooves of the moving plates 4, first motors 12 are fixedly connected. The output ends of the first motors 12 are fixedly connected with driving gears 13. On the outside of the rotating sleeve 11, a driven gear 14 is fixedly connected. The driving gear 13 is meshed with the driven gear 14. On the top of the installation grooves of the moving plates 4, a cover plate 44 is fixedly connected. By starting the first motor 12, the driving gear 13 is driven to rotate. The rotation of the driving gear 13 drives the driven gear 14 to rotate, and drives the rotating sleeve 11 to rotate, and the guide grooves 23 on both sides inside the rotating sleeve 11 limit the sliders 22, thereby driving the first threaded rods 15 to rotate. On both sides inside the moving plates 4, threaded sleeves 21 are fixedly connected. The two first threaded rods 15 respectively penetrate through the two threaded sleeves 21 and are threadedly connected with the two threaded sleeves 21. When the rotating sleeve 11 drives the first threaded rods 15 to rotate, the first threaded rods 15 are limited by the threaded sleeves 21, so that the first threaded rods 15 perform horizontal movement when rotating. At one end of the two first threaded rods 15 close to the two connecting plates 16, rotating rings 18 are rotatably connected. The two rotating rings 18 are respectively fixedly connected with the two connecting plates 16. On one side of the two connecting plates 16, two limiting rods 19 are fixedly connected. The four limiting rods 19 respectively penetrate through the two side walls of the moving plates 4 and are slidably connected with the moving plates 4. The connecting plates 16 are limited by the limiting rods 19 to maintain the stability of the connecting plates 16 during movement.

[0037] On both sides inside the two second support blocks 17, support wheels 20 are rotatably connected. The two second support blocks 17 are respectively slidably connected inside the two first guide rails 3. The two second support blocks 17 are respectively adapted to the two connecting rails 32. The four support wheels 20 respectively correspond to the two connecting rails 32.

[0038] Both the front and rear sides of the bottom of the moving plate 4 are fixedly connected with slide rails 24. The inside of each of the two slide rails 24 is rotatably connected with a second threaded rod 25. One end of each slide rail 24 is fixedly connected with a fourth motor 43. The output end of the fourth motor 43 is fixedly connected with the second threaded rod 25. The thread directions at both ends of the two second threaded rods 25 are opposite. Both ends of the two second threaded rods 25 are threadedly connected with moving blocks 26. The four moving blocks 26 are respectively slidably connected to both sides inside the two slide rails 24, so that the rotation of the second threaded rod 25 drives the two moving blocks 26 to move in opposite directions. The bottoms of the four moving blocks 26 are all fixedly connected with connecting blocks 27. The bottoms of the four connecting blocks 27 are all fixedly connected with second hydraulic cylinders 28. The output ends of the four second hydraulic cylinders 28 are all fixedly connected with moving wheels 31. The outsides of the four second hydraulic cylinders 28 are all fixedly connected with support plates 30. The bottoms of the four support plates 30 are all fixedly connected with support springs 29. The bottom ends of the four support springs 29 are respectively fixedly connected with the four moving wheels 31, and the support springs 29 are used to support the moving wheels 31.

[0039] The inside of each of the two side plates 33 is rotatably connected with a third threaded rod 36. One end of the inner wall of each of the two side plates 33 is fixedly connected with a third motor 42. The output end of the third motor 42 is fixedly connected with the third threaded rod 36. The thread directions at both ends of the two third threaded rods 36 are opposite. Four fixing blocks 34 are fixedly connected to the opposite sides of the two first guide rails 3. The outside of each of the four fixing blocks 34 is rotatably connected with a support arm 35. Two side support plates 40 are arranged on one side of each of the two side plates 33. One end of each of the four support arms 35 is respectively hinged to the two side support plates 40. The four support arms 35 are arranged in pairs opposite to each other, so that when the guide rod 38 swings, it drives the side support plates 40 to move outward and contact and support the inner wall of the mine tunnel. Both ends of the outside of the third threaded rod 36 are threadedly connected with two transverse moving blocks 37. The four transverse moving blocks 37 are respectively slidably connected to both sides inside the two side plates 33. Guide rods 38 are fixedly connected to the upper and lower sides of the four transverse moving blocks 37. Chutes 39 are opened inside the four support arms 35. The four guide rods 38 respectively penetrate through the four chutes 39 and are slidably connected with the four guide rods 38. The chutes 39 are used to limit and guide the guide rods 38 and push the support arms 35 to swing.

[0040] When this solution is in use, the fixing frame 1 is placed at the entrance of the mine tunnel. Then, a plurality of first hydraulic cylinders 2 are activated, causing the first hydraulic cylinders 2 to lift the first guide rail 3 upward, and the first guide rail 3 drives the third motor 42 to contact the top wall of the mine tunnel, thereby supporting the mine tunnel. Then, the third motor 42 is activated to drive the third threaded rod 36 to rotate, thereby driving the transverse movement blocks 37 on both sides to move relatively, so that the transverse movement blocks 37 drive the guide rods 38 to move. By the guide rods 38 moving inside the sliding grooves 39, the support arms 35 on both sides are pushed to swing synchronously, so that the support arms 35 on both sides drive the side support plates 40 to move outward while maintaining a horizontal state, and further the side support plates 40 contact the side walls of the mine tunnel to support the side walls of the mine tunnel and improve the stability of the front section of the mine tunnel.

[0041] By activating a plurality of second motors 41, the plurality of second motors 41 drive a plurality of rotating shafts 8 to rotate. During the rotation of the plurality of rotating shafts 8, a plurality of guide gears 7 are driven to rotate. Since the guide gears 7 are meshed and connected with the guide tooth plates 9, the plurality of guide gears 7 move outside the guide tooth plates 9 when rotating, so that the first support blocks 6 on both sides slide inside the first guide rail 3, thereby driving the moving plate 4 to move horizontally. When the moving plate 4 moves forward to the front end of the first guide rail 3, the moving plate 4 drives the rotating sleeve 11 and the first threaded rod 15 in front of it to move forward. The two first threaded rods 15 drive the connecting plate 16 and the second support block 17 to move forward, and the second support block 17 drives the support wheel 20 to roll inside the first guide rail 3. The first guide rail 3 is supported by the support wheel 20 to improve the stability of the moving plate 4. When the moving plate 4 drives the second support block 17 to move forward to the position of the connecting rail 32, the first motor 12 is activated to drive the driving gear 13 to rotate, and the driving gear 13 rotates to drive the driven gear 14 to rotate, and then drives the rotating sleeve 11 to rotate. During the rotation of the rotating sleeve 11, the guide grooves 23 on both sides inside it limit the sliders 22, thereby driving the first threaded rod 15 to rotate. When the two first threaded rods 15 rotate, since the threaded sleeve 21 is threadedly connected with the first threaded rod 15, the first threaded rod 15 moves horizontally during the rotation inside the threaded sleeve 21, and the first threaded rod 15 pushes the rotating ring 18 and the second support block 17 to move to both sides. When the connecting plate 16 moves, it pushes the second support block 17 to move horizontally to both sides, so that the second support block 17 continues to move into the extension rail 47 under the push of the moving plate 4, thereby expanding the protection range. When the second support block 17 moves to the through groove position opened at the front end of the extension rail 47, the first motor 12 is continuously activated to drive the rotating sleeve 11 to rotate, and the rotating sleeves 11 on both sides are pushed into the through grooves on both sides of the extension rail 47 by the first threaded rod 15, so that the second support blocks 17 on both sides support the inner wall of the mine tunnel and improve the support range.

[0042] The fourth motor 43 is started to drive the second threaded rod 25 to rotate, thereby driving the two moving blocks 26 to move to both sides. The two moving blocks 26 drive the two connecting blocks 27 and the second hydraulic cylinders 28 to move, so that the two second hydraulic cylinders 28 drive the two moving wheels 31 to move to both sides. Then, the second hydraulic cylinders 28 are started to drive the moving wheels 31 to descend, so that the moving wheels 31 contact the bottom of the mine roadway to support the bottom of the moving plate 4, improve the stability of the moving plate 4, facilitate the temporary emergency support for the mine roadway, and support the front section of the mine roadway first. After the support is completed, the support gradually extends to the inner side of the mine roadway to improve safety and greatly reduce the probability of mine roadway accidents.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A temporary reinforcement support device for a coal mine, comprising two fixed frames (1), characterized in that: The front and rear ends of the tops of the two fixed frames (1) are fixedly connected to first hydraulic cylinders (2), the output ends of the four first hydraulic cylinders (2) are respectively provided with two first guide rails (3), the top ends of the output ends of the four first hydraulic cylinders (2) are respectively fixedly connected to the bottoms of the two first guide rails (3), a moving plate (4) is provided between the two first guide rails (3), the rear side of the moving plate (4) is fixedly connected to a fixed arm (5), both ends of the fixed arm (5) are fixedly connected to first support blocks (6), the first support block (6) is rotatably connected to rotating shafts (8) on both sides inside, and the outer sides of the two rotating shafts (8) are fixedly connected to guide gears (7), a mounting groove is provided on the front side of the movable plate (4), support sleeves (10) are fixedly connected to both sides of the mounting groove, a rotating sleeve (11) is rotatably connected to the two support sleeves (10), first threaded rods (15) are slidably connected to both sides of the rotating sleeve (11), a connecting plate (16) is provided at one end of the two first threaded rods (15) away from each other, a second supporting block (17) is fixedly connected to one side of the two connecting plates (16), a connecting rail (32) is fixedly connected to the front end of the two first guide rails (3), and a side plate (33) is fixedly connected to the opposite side of the two first guide rails (3).

2. A temporary reinforcement and support device for coal mine mining according to claim 1, characterized in that: The first support block (6) is fixedly connected to the second motor (41) on both sides of the top, and the output ends of the two second motors (41) are fixedly connected to the two rotating shafts (8) respectively. The two first support blocks (6) are slidably connected to the inside of the two first guide rails (3), and the tops of the two first guide rails (3) are fixedly connected to the brackets (45). One ends of the two connecting rails (32) are fixedly connected to the extension rails (47), and the bottoms of the two extension rails (47) are fixedly connected to the reinforcement frames (46). One side of the inside of the first guide rail (3) is fixedly connected to the guide tooth plate (9), and the two guide gears (7) are meshingly connected to one side of the guide tooth plate (9).

3. A temporary reinforcement and support device for a coal mine according to claim 1, characterized in that: Guide grooves (23) are integrally formed on both sides of the rotating sleeve (11), sliders (22) are fixedly connected to both sides of opposite ends of the two first threaded rods (15), and the four sliders (22) are respectively slidably connected to the inside of the two guide grooves (23) and adapted to the two guide grooves (23), a first motor (12) is fixedly connected to the inside of the installation groove of the moving plate (4), a driving gear (13) is fixedly connected to the output end of the first motor (12), a driven gear (14) is fixedly connected to the outside of the rotating sleeve (11), the driving gear (13) is meshedly connected to the driven gear (14), and a cover plate (44) is fixedly connected to the top of the installation groove of the moving plate (4).

4. A temporary reinforcement and support device for a coal mine according to claim 1, characterized in that: Threaded sleeves (21) are fixedly connected to both sides of the interior of the movable plate (4), and the two first threaded rods (15) respectively penetrate the two threaded sleeves (21) and are threadedly connected to the two threaded sleeves (21).

5. The temporary reinforcement and support device for coal mine mining according to claim 1 is characterized in that: The two first threaded rods (15) are rotatably connected to a rotating ring (18) at one end close to the two connecting plates (16); the two rotating rings (18) are respectively fixedly connected to the two connecting plates (16); one side of the two connecting plates (16) is fixedly connected to two limiting rods (19); the four limiting rods (19) respectively penetrate the two side walls of the movable plate (4) and are slidably connected to the movable plate (4).

6. The temporary reinforcement and support device for coal mine mining according to claim 1, characterized in that: Support wheels (20) are rotatably connected on both sides of the two second support blocks (17), the two second support blocks (17) are respectively slidably connected to the inside of the two first guide rails (3), the two second support blocks (17) are respectively adapted to the two connecting rails (32), and the four support wheels (20) respectively correspond to the two connecting rails (32).

7. A temporary reinforcement and support device for a coal mine according to claim 1, characterized in that: The front and rear sides of the bottom of the movable plate (4) are fixedly connected with slide rails (24), the two slide rails (24) are rotatably connected with second threaded rods (25) inside, one end of the slide rail (24) is fixedly connected with a fourth motor (43), the output end of the fourth motor (43) is fixedly connected with the second threaded rod (25), the thread directions of the two ends of the two second threaded rods (25) are arranged to be opposite, the two ends of the two second threaded rods (25) are threadedly connected with moving blocks (26), and the four moving blocks (26) are respectively slidably connected to the two sides of the inside of the two slide rails (24).

8. A temporary reinforcement and support device for a coal mine according to claim 7, characterized in that: The bottoms of the four moving blocks (26) are all fixedly connected to connecting blocks (27), the bottoms of the four connecting blocks (27) are all fixedly connected to second hydraulic cylinders (28), the output ends of the four second hydraulic cylinders (28) are all fixedly connected to moving wheels (31), the outer sides of the four second hydraulic cylinders (28) are all fixedly connected to support plates (30), the bottoms of the four support plates (30) are all fixedly connected to support springs (29), and the bottom ends of the four support springs (29) are respectively fixedly connected to the four moving wheels (31).

9. The temporary reinforcement and supporting device for coal mine mining according to claim 1, characterized in that: The inside of the two side panels (33) is rotatably connected with a third threaded rod (36), one end of the inner wall of the two side panels (33) is fixedly connected with a third motor (42), the output end of the third motor (42) is fixedly connected to the third threaded rod (36), the thread directions of the two ends of the two third threaded rods (36) are arranged oppositely, four fixed blocks (34) are fixedly connected to the opposite side of the two first guide rails (3), the outer sides of the four fixed blocks (34) are rotatably connected with support arms (35), one side of the two side panels (33) is provided with two side support plates (40), one end of the four support arms (35) is respectively hinged to the two side support plates (40), and the four support arms (35) are arranged opposite to each other in pairs.

10. A temporary reinforcement and support device for a coal mine according to claim 9, characterized in that: Two transverse blocks (37) are threadedly connected to the outer ends of the third threaded rod (36), and the four transverse blocks (37) are respectively slidably connected to the two sides inside the two side plates (33). The upper and lower sides of the four transverse blocks (37) are fixedly connected to guide rods (38). The four support arms (35) are each provided with a sliding groove (39), and the four guide rods (38) respectively penetrate the four sliding grooves (39) and are slidably connected to the four guide rods (38).

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