A multi-size mine roadway support device

Abstract

The present invention discloses a multi-size mine roadway support device, which relates to the technical field of mine roadway support. The present invention includes two bases, and further includes: two first connecting seats, the two first connecting seats are respectively rotatably installed on the corresponding bases, and support rods are installed on both of the two first connecting seats through telescopic components. The design of the telescopic components can adjust the longitudinal distance between the support rods and the first connecting seats. Two second connecting seats are rotatably installed on both of the support rods, and cross beams are fixedly installed on the side walls of the two second connecting seats. The advantages are as follows: The support device of the present invention can support mine roadways of different sizes and can always ensure the support effect on the mine roadways. When the mine roadway undergoes deformation, cracks, surrounding rock shedding and other situations, or the support device itself undergoes deformation and loosening, the emergency lighting lamp can automatically light up, facilitating the safe evacuation of the staff in case of an emergency, or promptly discovering the problems of the support device and carrying out maintenance or replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of mine roadway support, and particularly relates to a mine roadway support device with multiple sizes. Background Technique

[0002] During the process of underground mineral deposit mining, it is necessary to excavate mine roadways for purposes such as mining, transportation, ventilation, drainage, and power supply to ensure the smooth progress of mineral deposit mining. In order to ensure the stability of the mine roadways, support devices are used to support them after excavation.

[0003] In order to meet different requirements, there will be deviations in the excavation sizes of mine roadways. After the existing support devices are installed, their sizes cannot be adjusted, which cannot meet the support requirements of mine roadways with different sizes, and their applicability is poor. Moreover, the existing support devices do not have an extension and expansion effect after installation. When the mine roadways are deformed, cracked, or the surrounding rock falls off, the support effect of the support devices on the mine roadways will also be affected, reducing the safety factor. Therefore, it is necessary to design a mine roadway support device with multiple sizes. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a mine roadway support device with multiple sizes, which solves the problems mentioned in the above background technique.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A mine roadway support device with multiple sizes includes two bases, and further includes:

[0007] Two connecting seats I, the two connecting seats I are respectively rotatably installed on the corresponding bases, and support rods are installed on both of the two connecting seats I through telescopic components. The design of the telescopic components can adjust the longitudinal distance between the support rods and the connecting seats I. Support rods are rotatably installed on both of the two support rods, and cross beams are fixedly installed on the side walls of the two connecting seats II. A main beam is installed between the two cross beams, and an adjusting component for cooperating with the two cross beams is installed on the main beam. The adjusting component is used to adjust the lateral distance between the two cross beams;

[0008] A reinforcement part, the reinforcement part is composed of two reinforcement components. The reinforcement components are used to reinforce and support between the support rods and the cross beams. The reinforcement component includes a hinge seat fixedly installed on the support rod, and an inclined strut is rotatably installed on the hinge seat. The other end of the inclined strut is also rotatably installed with a hinge seat. A T-shaped block is fixedly installed on the hinge seat far from the support rod, and a T-shaped groove for horizontal sliding cooperation with the T-shaped block is opened at the bottom of the cross beam;

[0009] The pressure application and detection unit is composed of two pressure application and detection components. The pressure application and detection component is used to apply pressure to the T-shaped block after the diagonal brace completes the support of the cross beam and detect its subsequent movement in the T-shaped groove.

[0010] Furthermore, a first connecting block is fixedly installed on the base, and a first rotating shaft rotatably connected to the first connecting seat is fixedly installed on the first connecting block. A second connecting block is fixedly installed on the support rod, and a second rotating shaft rotatably connected to the second connecting seat is fixedly installed on the second connecting block. A plurality of positioning holes are formed in the side walls of the first rotating shaft and the second rotating shaft. Positioning mechanisms are installed on the first connecting seat and the second connecting seat respectively, and the positioning mechanisms are respectively matched with the corresponding positioning holes.

[0011] Furthermore, the positioning mechanism is composed of a fixed block, a screw rod and a positioning plug rod. The fixed block is fixedly installed on the side wall of the first connecting seat. The screw rod is threadedly installed on the fixed block. The positioning plug rod is fixedly installed on the screw rod, and the positioning plug rod corresponds to the positioning hole in position.

[0012] Furthermore, the telescopic component is composed of a telescopic rod, a telescopic groove, a plugging rod and a plurality of plugging holes. The telescopic rod is fixedly installed at the upper end of the first connecting seat. The telescopic groove is formed at the bottom of the support rod, and the telescopic groove is slidably matched with the telescopic rod. A plurality of the plugging holes are formed through the telescopic rod in the front and back directions. The plugging rod penetrates through the support rod in the front and back directions, and the plugging rod corresponds to the plugging hole in position.

[0013] Furthermore, the adjusting component is composed of a bidirectional lead screw, a fixed gear ring and an adjusting gear. The bidirectional lead screw is rotatably installed in the main beam, and the two ends of the bidirectional lead screw are respectively threadedly connected to the corresponding cross beams. The fixed gear ring is fixedly installed in the middle section of the bidirectional lead screw. The adjusting gear is rotatably installed on the main beam through a round rod, and the adjusting gear is meshed with the fixed gear ring. One end of the adjusting gear is located outside the main beam, and a plurality of arc-shaped holes penetrating through the left and right directions are evenly formed on the surface of the adjusting gear.

[0014] Furthermore, the pressure application and detection component is composed of a lead screw, a moving block, a moving plate, a moving groove, a spring, a top plate and two mounting blocks. The two mounting blocks are both fixedly installed at the bottom of the cross beam. The lead screw is rotatably connected between the two mounting blocks. The moving block is threadedly connected to the lead screw. The moving plate is fixedly installed on the top of the moving block. The moving groove is formed at the bottom of the cross beam, and the moving groove communicates with the T-shaped groove and is slidably matched with the moving plate in the left and right directions. The top plate is also slidably installed in the moving groove. The spring is installed between the top plate and the moving plate.

[0015] Further, a fixing rod slidably engaged with the moving plate is fixedly installed on the top plate, and a vertical rod is fixedly installed on the side wall of the fixing rod. A sliding groove matched with the vertical rod is formed on the side wall of the moving groove. A docking rack is installed at the bottom of the vertical rod. A fixing seat is fixedly installed at the bottom of the moving block, and an emergency lighting lamp is fixedly installed on the fixing seat. A rotating rod is also rotatably installed on the fixing seat, and a fixing gear matched with the docking rack is fixedly installed at the end of the rotating rod outside the fixing seat. An energizing block is fixedly installed on the side wall of the end of the rotating rod inside the fixing seat. Two power supply plates electrically connected to the emergency lighting lamp are fixedly installed in the fixing seat, and the two power supply plates are respectively located on both sides of the energizing block.

[0016] Further, an adjusting rod is rotatably installed on the vertical rod through a damping bearing, and the adjusting rod is fixedly connected to the docking rack.

[0017] Further, two transverse grooves slidably engaged with the corresponding cross beams are formed at the bottom of the main beam. A limiting block is fixedly installed on the side wall of the cross beam. A limiting groove slidably engaged with the limiting block is formed on the side wall of the transverse groove.

[0018] Compared with the existing technology, the advantages of the present invention are as follows:

[0019] 1: Through the cooperation of the telescopic assembly, the adjusting assembly, the first connecting seat and the second connecting seat, the size and shape of the support device can be adjusted according to the size and shape of the mine roadway, so that it can effectively support mine roadways of different sizes, greatly improving the applicable range of the support device.

[0020] 2: Through the cooperation of the reinforcement assembly and the pressure detection assembly, after the installation of the support device is completed, the supporting effect of the support rod on the cross beam can be improved, and the support rod, the cross beam and the main beam can always apply an outward expansion force to the mine roadway, so as to ensure the support effect on the mine roadway when deformation, cracks or surrounding rock shedding occur on the contact surface between the mine roadway and the support device, greatly improving the stability and safety factor of the support device.

[0021] 3: Through the cooperation of the fixing rod, the support rod, the docking rack and the fixing gear, when deformation, cracks, surrounding rock shedding occur on the contact surface between the mine roadway and the support device or the support device itself is deformed and loosened, the emergency lighting lamp is automatically turned on by the movement of the top plate, facilitating the safe evacuation of the staff in case of an emergency, or timely discovering the problems of the support device and carrying out maintenance or replacement.

[0022] In summary, the support device of the present invention can support mine roadways of different sizes and always ensure the support effect on mine roadways. When deformation, cracks, surrounding rock shedding, etc. occur in the mine roadway or the support device itself deforms and loosens, the emergency lighting can automatically turn on, facilitating the safe evacuation of workers in case of an emergency, or promptly discovering problems with the support device for repair or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a multi-size mine roadway support device proposed by the present invention;

[0024] Figure 2 is Figure 1 a schematic structural diagram from another perspective;

[0025] Figure 3 is Figure 1 a schematic exploded view of

[0026] Figure 4 is Figure 2 a schematic exploded view of

[0027] Figure 5 is Figure 4 a schematic enlarged view of the structure at the support rod located on the left side in

[0028] Figure 6 is Figure 5 a schematic enlarged view of the structure of part a in

[0029] Figure 7 is Figure 1 a left view of

[0030] Figure 8 is Figure 7 a schematic structural diagram of the A-A plane in

[0031] Figure 9 is Figure 8 a schematic enlarged view of the structure of part b in

[0032] Figure 10 is Figure 8 a schematic enlarged view of the structure of part c in

[0033] Figure 11 is Figure 4 a schematic enlarged view of the structure at one of the lead screws in

[0034] Figure 12 is Figure 11 a schematic enlarged view from another perspective;

[0035] Figure 13 is Figure 12 a schematic exploded view of

[0036] In the figure: 1, base; 2, connecting seat 1; 3, telescopic rod; 4, support rod; 5, connecting seat 2; 6, cross beam; 7, main beam; 8, rotating shaft 1; 9, connecting block 1; 10, rotating shaft 2; 11, connecting block 2; 12, fixed block; 13, screw; 14, positioning plug rod; 15, telescopic slot; 16, plug hole; 17, plug rod; 18, cross slot; 19, limit block; 20, limit slot; 21, two-way screw; 22, fixed gear ring; 2 3. Adjusting gear; 24. Capstan seat; 25. Diagonal support rod; 26. T-block; 27. T-slot; 28. Mounting block; 29. ​​Screw rod; 30. Moving block; 31. Moving plate; 32. Moving slot; 33. Spring; 34. Top plate; 35. Fixed rod; 36. Slide slot; 37. Vertical rod; 38. Fixed seat; 39. Emergency lighting; 40. Rotating rod; 41. Fixed gear; 42. Power block; 43. Adjusting rod; 44. Docking rack. DETAILED DESCRIPTION

[0037] Reference Figures 1-13 A multi-size mine tunnel support device includes two bases 1, the bases 1 are used to be fixed on the ground of the mine tunnel, and can be fixed by bolts or concrete pouring, and also includes two connecting seats 2, the two connecting seats 2 are rotatably mounted on the corresponding bases 1, and the two connecting seats 2 are both mounted with support rods 4 through telescopic components, a connecting block 9 is fixedly mounted on the base 1, and a rotating shaft 8 rotatably connected to the connecting seat 2 is fixedly mounted on the connecting block 9, and the design of the rotating shaft 8 can adjust the angle of the connecting seat 2 relative to the base 1, so the installation angle of the support rod 4 relative to the base 1 can be adjusted according to the shape of the mine tunnel, so that the support rod 4 can better fit the side wall of the mine tunnel and improve the overall stability;

[0038] The design of the telescopic assembly can adjust the longitudinal distance between the support rod 4 and the connecting seat 2. The telescopic assembly consists of a telescopic rod 3, a telescopic slot 15, a plug rod 17 and a plurality of plug holes 16. The telescopic rod 3 is fixedly mounted on the upper end of the connecting seat 2. The telescopic slot 15 is provided at the bottom of the support rod 4, and the telescopic slot 15 and the telescopic rod 3 are slidably matched. A plurality of plug holes 16 are all provided on the telescopic rod 3 through the front and back. The plug rod 17 is inserted into the support rod 4 through the front and back, and the plug rod 17 corresponds to the position of the plug hole 16. By plugging the plug rod 17 with the corresponding plug hole 16, the distance between the support rod 4 and the base 1 can be adjusted, so that the cross beam 6 and the main beam 7 located at the top of the support rod 4 can effectively support the top walls of mine tunnels at different heights.

[0039] Two support rods 4 are rotatably installed with second connecting seats 5, and cross beams 6 are fixedly installed on the side walls of the two second connecting seats 5. A second connecting block 11 is fixedly installed on the support rod 4, and a second rotating shaft 10 rotatably connected to the second connecting seat 5 is fixedly installed on the second connecting block 11. Under the design of the second rotating shaft 10, the second connecting seat 5 can rotate on the top of the support rod 4, so as to ensure the supporting effect of the support rod 4 on the cross beam 6 on the premise of effectively fitting the support rod 4 with the side wall of the mine roadway;

[0040] A plurality of positioning holes are formed in the side walls of the first rotating shaft 8 and the second rotating shaft 10. Positioning mechanisms are installed on the first connecting seat 2 and the second connecting seat 5 respectively, and the positioning mechanisms are respectively matched with the corresponding positioning holes. The positioning mechanism is composed of a fixed block 12, a screw 13 and a positioning plug 14. The fixed block 12 is fixedly installed on the side wall of the first connecting seat 2. The screw 13 is threadedly installed on the fixed block 12. The positioning plug 14 is fixedly installed on the screw 13, and the positioning plug 14 corresponds to the positioning hole in position. When the angle adjustment of the support rod 4 is completed, rotating the screw 13 makes the positioning plug 14 insert into the corresponding positioning hole to fix the angle of the support rod 4, so as to ensure its effective fit with the side wall of the mine roadway.

[0041] A main beam 7 is installed between the two cross beams 6. Two transverse grooves 18 slidably matched with the corresponding cross beams 6 are formed in the bottom of the main beam 7. The design of the transverse grooves 18 enables the cross beams 6 to slide left and right at the bottom of the main beam 7. A limiting block 19 is fixedly installed on the side wall of the cross beam 6. A limiting groove 20 slidably matched with the limiting block 19 is formed in the side wall of the transverse groove 18. The cooperation between the limiting block 19 and the limiting groove 20 can ensure the stable connection between the cross beam 6 and the transverse groove 18.

[0042] An adjusting assembly cooperating with two cross beams 6 is installed on the main beam 7. The adjusting assembly is used to adjust the lateral spacing between the two cross beams 6. The adjusting assembly consists of a bidirectional lead screw 21, a fixed gear ring 22 and an adjusting gear 23. The bidirectional lead screw 21 is rotatably installed in the main beam 7, and both ends of the bidirectional lead screw 21 are respectively threadedly connected to the corresponding cross beam 6. The fixed gear ring 22 is fixedly installed in the middle section of the bidirectional lead screw 21. The adjusting gear 23 is rotatably installed on the main beam 7 through a round rod, and the adjusting gear 23 meshes with the fixed gear ring 22. One end of the adjusting gear 23 is located outside the main beam 7, and a plurality of arc-shaped holes penetrating left and right are evenly formed on the surface of the adjusting gear 23. When it is necessary to adjust the spacing between the two cross beams 6, the staff can more conveniently rotate the adjusting gear 23 by virtue of the existence of the arc-shaped holes, and then make the bidirectional lead screw 21 rotate through the meshing effect between the adjusting gear 23 and the fixed gear ring 22, so that the two cross beams 6 approach or move away from each other, thereby realizing the support effect on mine roadways with different widths. In order to ensure the stability after the spacing between the two cross beams 6 is adjusted, two convex blocks can be fixedly arranged on the front side wall of the main beam 7, and a positioning rod cooperating with a plurality of arc-shaped holes is slidably arranged between the two convex blocks, which is used to fix the position of the adjusting gear 23 on the main beam 7 after the spacing between the two cross beams 6 is adjusted.

[0043] A reinforcing part, which consists of two reinforcing assemblies. The reinforcing assemblies are used to reinforce and support between the support rod 4 and the cross beam 6. The reinforcing assembly includes a hinge seat 24 fixedly installed on the support rod 4, and an inclined strut 25 is rotatably installed on the hinge seat 24. The other end of the inclined strut 25 is also rotatably installed with a hinge seat 24. A T-shaped block 26 is fixedly installed on the hinge seat 24 away from the support rod 4. A T-shaped groove 27 for laterally slidingly cooperating with the T-shaped block 26 is formed at the bottom of the cross beam 6. When the angle of the support rod 4 relative to the base 1 changes, its angle relative to the cross beam 6 also changes simultaneously. At this time, the inclined strut 25 rotates between the two hinge seats 24 to meet the angle change between the support rod 4 and the cross beam 6. At the same time, a triangular space is formed among the support rod 4, the cross beam 6 and the inclined strut 25 to ensure the support effect of the support rod 4 on the cross beam 6, and the T-shaped block 26 slides in the T-shaped groove 27 to avoid the problem that the rotation of the angle of the support rod 4 relative to the cross beam 6 is blocked due to the length limitation of the inclined strut 25.

[0044] The pressure application and detection part is composed of two pressure application and detection components. The pressure application and detection components are used to apply pressure to the T-shaped block 26 and detect its subsequent movement in the T-shaped groove 27 after the diagonal strut 25 completes the support of the cross beam 6. The pressure application and detection component consists of a lead screw 29, a moving block 30, a moving plate 31, a moving groove 32, a spring 33, a top plate 34 and two mounting blocks 28. Both of the two mounting blocks 28 are fixedly installed at the bottom of the cross beam 6. The lead screw 29 is rotatably connected between the two mounting blocks 28. The moving block 30 is threadedly connected to the lead screw 29. The moving plate 31 is fixedly installed on the top of the moving block 30. The moving groove 32 is opened at the bottom of the cross beam 6, and the moving groove 32 communicates with the T-shaped groove 27 and is slidably matched with the moving plate 31 left and right. The top plate 34 is also slidably installed in the moving groove 32. The spring 33 is installed between the top plate 34 and the moving plate 31. After the angle adjustment of the support rod 4 relative to the cross beam 6 is completed, the lead screw 29 is rotated to make the moving block 30 push the moving plate 31 to move in the moving groove 32 towards the direction close to the T-shaped block 26, and the top plate 34 is brought into contact with the T-shaped block 26 by the connection action of the spring 33. Then the lead screw 29 is continuously rotated to make the moving plate 31 squeeze the spring 33, so that the top plate 34 applies a certain pressure to the T-shaped block 26. Since the cross beam 6, the support rod 4 and the main beam 7 have supported the mine roadway at this time, the reaction force of the mine roadway will limit the angles of the positions of the cross beam 6, the support rod 4 and the main beam 7. Then the extrusion of the spring 33 at this time will not make the T-shaped block 26 continue to move, but will always apply a certain thrust to the T-shaped block 26. By virtue of this thrust effect, the cross beam 6, the support rod 4 and the main beam 7 can always apply an outward expansion support effect to the contact surface with the mine roadway, thereby greatly improving the support effect.

[0045] A fixing rod 35 which is slidably matched with the moving plate 31 is fixedly installed on the top plate 34. A vertical rod 37 is fixedly installed on the side wall of the fixing rod 35. A sliding groove 36 which is matched with the vertical rod 37 is formed on the side wall of the moving groove 32. A docking rack 44 is installed at the bottom of the vertical rod 37. A fixing seat 38 is fixedly installed at the bottom of the moving block 30. An emergency lighting lamp 39 is fixedly installed on the fixing seat 38. A rotating rod 40 is also rotatably installed on the fixing seat 38. A fixing gear 41 which is matched with the docking rack 44 is fixedly installed at one end of the rotating rod 40 outside the fixing seat 38. A power-on block 42 is fixedly installed on the side wall of one end of the rotating rod 40 inside the fixing seat 38. Two power supply plates which are electrically connected with the emergency lighting lamp 39 are fixedly installed in the fixing seat 38. The two power supply plates are respectively located on both sides of the power-on block 42. After the support device for the mine roadway is completed, if the mine roadway undergoes deformation, cracks or surrounding rock shedding and other situations, the contact surface between the support device and the mine roadway will have a certain displacement. At this time, the T-shaped block 26 slides in the T-shaped groove 27 in the corresponding direction, then it will drive the top plate 34 to slide relative to the moving plate 31 at the same time. When the top plate 34 slides, the fixing rod 35 drives the vertical rod 37 to move. The movement of the vertical rod 37 will cause the docking rack 44 to drive the fixing gear 41 to rotate. Then at this time, the power-on block 42 will contact with a corresponding power supply plate, and the emergency lighting lamp 39 will be powered on for intensive lighting, which is convenient for the staff to evacuate in time. At the same time, when the support device itself deforms under pressure, the staff can also know this message through the lighting of the emergency lighting lamp 39, which is convenient for timely maintenance or replacement of the support device, ensuring the support effect on the mine roadway and improving the safety factor.

[0046] An adjusting rod 43 is rotatably installed on the vertical rod 37 through a damping bearing. The adjusting rod 43 is fixedly connected with the docking rack 44. With the design of the adjusting rod 43, during the installation process of the support device, the docking rack 44 can be rotated to a state where it is not meshed with the fixing gear 41, avoiding the problem that the emergency lighting lamp 39 lights up due to the movement of the top plate 34 during the installation process. After the installation is completed, rotating the adjusting rod 43 again to make the docking rack 44 and the fixing gear 41 in a meshed state can enable the emergency lighting lamp 39 to play its due role in the follow-up.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A multi-size mine tunnel support device, comprising two bases (1), characterized in that: Also includes: Two connecting seats (2), the two connecting seats (2) are rotatably mounted on the corresponding base (1), and the two connecting seats (2) are both mounted with support rods (4) via telescopic components, the telescopic components are designed to adjust the longitudinal spacing between the support rods (4) and the connecting seat (2), the two supporting rods (4) are both rotatably mounted with connecting seats (5), and the side walls of the two connecting seats (5) are both fixedly mounted with cross beams (6), a main beam (7) is mounted between the two cross beams (6), and an adjustment component matched with the two cross beams (6) is mounted on the main beam (7), and the adjustment component is used to adjust the transverse spacing between the two cross beams (6); A reinforcement part, the reinforcement part is composed of two reinforcement components, the reinforcement components are used to reinforce the support between the support rod (4) and the cross beam (6), the reinforcement component comprises a capstan (24) fixedly mounted on the support rod (4), and a diagonal support rod (25) is rotatably mounted on the capstan (24), the other end of the diagonal support rod (25) is also rotatably mounted with the capstan (24), a T-shaped block (26) is fixedly mounted on the capstan (24) away from the support rod (4), and a T-shaped groove (27) is provided at the bottom of the cross beam (6) and is laterally slidably matched with the T-shaped block (26); A pressure detection unit, the pressure detection unit is composed of two pressure detection components, and the pressure detection components are used to apply pressure to the T-shaped block (26) and detect its subsequent movement in the T-shaped groove (27) after the diagonal support rod (25) completes the support of the crossbeam (6); The pressure detection assembly is composed of a screw rod (29), a moving block (30), a moving plate (31), a moving groove (32), a spring (33), a top plate (34) and two mounting blocks (28). The two mounting blocks (28) are fixedly mounted on the bottom of the cross beam (6). The screw rod (29) is rotatably connected between the two mounting blocks (28). The moving block (30) is threadedly connected to the screw rod (29). The moving plate (31) is fixedly mounted on the top of the moving block (30). The moving groove (32) is provided at the bottom of the cross beam (6). The moving groove (32) is interconnected with the T-shaped groove (27) and is slidably matched with the moving plate (31) left and right. The top plate (34) is also slidably mounted in the moving groove (32). The spring (33) is mounted between the top plate (34) and the moving plate (31).

2. A multi-size mine tunnel support device according to claim 1, characterized in that: The base (1) is fixedly mounted with a connecting block (9), and a rotating shaft (8) rotatably connected to the connecting seat (2) is fixedly mounted on the connecting block (9); the support rod (4) is fixedly mounted with a connecting block (11), and a rotating shaft (10) rotatably connected to the connecting seat (5) is fixedly mounted on the connecting block (11); a plurality of positioning holes are provided on the side walls of the rotating shaft (8) and the rotating shaft (10); positioning mechanisms are mounted on the connecting seat (2) and the connecting seat (5), and the positioning mechanisms are respectively matched with the corresponding positioning holes.

3. A multi-size mine tunnel support device according to claim 2, characterized in that: The positioning mechanism is composed of a fixing block (12), a screw rod (13) and a positioning plug rod (14); the fixing block (12) is fixedly mounted on the side wall of the connecting seat (2); the screw rod (13) is threadedly mounted on the fixing block (12); the positioning plug rod (14) is fixedly mounted on the screw rod (13); and the positioning plug rod (14) corresponds to the position of the positioning hole.

4. A multi-size mine tunnel support device according to claim 1, characterized in that: The telescopic assembly is composed of a telescopic rod (3), a telescopic slot (15), a plug-in rod (17) and a plurality of plug-in holes (16); the telescopic rod (3) is fixedly mounted on the upper end of the connecting seat (2); the telescopic slot (15) is provided at the bottom of the supporting rod (4), and the telescopic slot (15) and the telescopic rod (3) are slidably matched; the plurality of plug-in holes (16) are all provided on the telescopic rod (3) through the front and back; the plug-in rod (17) is inserted into the supporting rod (4) through the front and back, and the plug-in rod (17) and the plug-in holes (16) are located correspondingly.

5. The multi-size mine tunnel support device according to claim 1, characterized in that: The adjustment assembly comprises a bidirectional lead screw (21), a fixed gear ring (22) and an adjustment gear (23); the bidirectional lead screw (21) is rotatably mounted in the main beam (7), and both ends of the bidirectional lead screw (21) are respectively threadedly connected to the corresponding cross beam (6); the fixed gear ring (22) is fixedly mounted on the middle section of the bidirectional lead screw (21); the adjustment gear (23) is rotatably mounted on the main beam (7) via a round rod, and the adjustment gear (23) is meshed with the fixed gear ring (22); one end of the adjustment gear (23) is located outside the main beam (7), and a plurality of arc holes penetrating left and right are evenly opened on the surface of the adjustment gear (23).

6. A multi-size mine tunnel support device according to claim 1, characterized in that: A fixed rod (35) slidably matched with the movable plate (31) is fixedly mounted on the top plate (34), and a vertical rod (37) is fixedly mounted on the side wall of the fixed rod (35). A sliding groove (36) matching with the vertical rod (37) is provided on the side wall of the movable groove (32). A docking rack (44) is mounted on the bottom of the vertical rod (37). A fixed seat (38) is fixedly mounted on the bottom of the movable block (30), and an emergency lighting lamp (39) is fixedly mounted on the fixed seat (38). A rotating rod (40) is also rotatably mounted on the fixed seat (38), and a fixed gear (41) that matches the docking rack (44) is fixedly mounted on one end of the rotating rod (40) located outside the fixed seat (38), and a power supply block (42) is fixedly mounted on the side wall of one end of the rotating rod (40) located inside the fixed seat (38). Two power supply boards electrically connected to the emergency lighting lamp (39) are fixedly mounted inside the fixed seat (38), and the two power supply boards are respectively located on both sides of the power supply block (42).

7. A multi-size mine tunnel support device according to claim 6, characterized in that: An adjusting rod (43) is rotatably mounted on the vertical rod (37) via a damping bearing, and the adjusting rod (43) is fixedly connected to a docking rack (44).

8. The multi-size mine tunnel support device according to claim 1, characterized in that: The bottom of the main beam (7) is provided with two transverse grooves (18) that slidably cooperate with the corresponding transverse beams (6), a limit block (19) is fixedly mounted on the side wall of the transverse beam (6), and a limit groove (20) that slidably cooperates with the limit block (19) is provided on the side wall of the transverse groove (18).

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