Tunneling supporting device

Abstract

The utility model discloses a tunnel boring supporting device which comprises three sets of supporting pieces, the three sets of supporting pieces are evenly arranged at intervals in a surrounding mode, adjusting frames are arranged at the corresponding positions of the three sets of supporting pieces, a positioning plate is fixedly connected to the outer surface of the inner side of each adjusting frame, a movable cavity is formed in each positioning plate, and a second bevel gear is rotationally connected to the bottom of each movable cavity. The bottom of the second bevel gear is fixedly connected with a rotating handle. The inner wall of the adjusting frame is rotatably connected with a long screw rod, the end face of the long screw rod is fixedly connected with a first bevel gear, the long screw rod is in threaded connection with a moving block in a penetrating mode, the fixing plate is internally and rotatably connected with a bidirectional screw rod, the bidirectional screw rod is in threaded connection with a sliding block in a penetrating mode, and the outer surface of the side, close to the supporting piece, of the sliding block is fixedly connected with a clamping plate. According to the tunneling supporting device, when the supporting piece is installed, the supporting piece cannot move, a user can conveniently install the supporting piece on the inner wall of a vertical shaft, and meanwhile when a tunneling machine moves up and down for excavation, the tunneling machine cannot slide out of the sliding rail.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation, in particular to a tunnel excavation support device. Background Art

[0002] Tunnels are divided into horizontal and vertical tunnels. Vertical tunnels are also called shafts. Vertical shafts can be excavated by using a tunnel boring machine. Before excavating the shaft, a pit of about two meters is dug. Then, a circular concrete wall is placed inside the pit. Then, the user installs a support device on the inner wall of the concrete wall, and then uses a crane to lift the excavation device and make it snap into the inside of the support device, making it easy for the excavation device to slide inside the support device, thereby achieving the purpose of excavating the bottom of the shaft;

[0003] The support device needs to maintain the same horizontal height during installation, but there is no relevant mechanism for positioning between the supports, which will cause the heights of the supports to be different. In actual use, once a height misalignment occurs, the support members cannot be leveled, and when the excavation device moves up and down, the distance it moves is determined by the height of the supports. Therefore, the height misalignment between the supports may cause the excavation device to separate from the support device when moving, thereby requiring the user to recalibrate and install the excavation device, further increasing the difficulty for the user to dig tunnels.

[0004] In view of the above situation, we propose a tunnel excavation support device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a tunnel excavation support device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A tunnel excavation support device includes support members, wherein the support members are arranged in three groups in a circular manner and at even intervals, and corresponding positions of the three groups of support members are provided with adjustment frames, the inner and outer surfaces of the adjustment frames are fixedly connected to positioning plates, the positioning plates have a movable cavity defined therein, the bottom of the movable cavity is rotatably connected to a second bevel gear, the bottom of the second bevel gear passes through the positioning plate, and the end surface thereof is fixedly connected to a rotating handle;

[0008] The inner wall of the adjustment frame is rotatably connected to a long screw rod, the long screw rod passes through the adjustment frame and the end face is fixedly connected to the first bevel gear, the second bevel gear is perpendicular to the first bevel gear and the second bevel gear is meshed with the first bevel gear;

[0009] The long screw rod is threadedly connected to a moving block, the bottom of the moving block is fixedly connected to an extension plate whose upper surface is in contact with the adjustment frame, the end of the extension plate is fixedly connected to a fixed plate, the fixed plate is provided with two sets of symmetrical sliding grooves, the inside of the sliding grooves is rotatably connected to a bidirectional screw rod, the bidirectional screw rod is threadedly connected to a slider, and the outer surface of the slider close to the support member is fixedly connected to a splint;

[0010] An upper limit plate is fixedly connected above the fixed plate, and the upper limit plate and the fixed plate are in a vertical relationship.

[0011] Preferably, mounting holes are uniformly spaced through the interior of the support member, the support member is fixed to the mounting holes through expansion screws, and a slide rail is provided on the inner side of the support member.

[0012] Preferably, a fixed sector plate is fixedly connected to the inner wall between the adjustment frames, a fixed rod is fixedly connected to the top of the fixed sector plate, and a fixed circular plate is fixedly connected to the top of the fixed rod.

[0013] Preferably, fixed support rods are fixedly connected to both sides of the fixed circular plate, slots are provided inside the fixed support rods, and sliding support rods are slidably connected inside the slots.

[0014] Preferably, a connecting rod is rotatably connected to the center of the fixed circular plate, the bottom of the connecting rod passes through the positioning plate and the end face is fixedly connected to the top of the second bevel gear.

[0015] Preferably, the thread lines of the bidirectional screw rod in different sliding grooves have opposite directions.

[0016] The utility model proposes a tunnel boring support device, which has the following beneficial effects: when installing the support device, the user can first locate the position of the support member through the clamping plate, and then make the fixed support rod clamped above the vertical shaft, so that all the support members are in the same horizontal position, and then the user rotates the rotating handle, while driving the support member to move outward, so that the support member can be against the inner wall of the vertical shaft, so that when the user installs the support member, the support member will not shift, which is convenient for the user to install the support member on the inner wall of the vertical shaft, and at the same time makes the horizontal height of the support member the same, so that the tunnel boring machine will not slide out from the inside of the slide rail when moving up and down for excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall top structure of the utility model;

[0019] Figure 3This is a cross-sectional view of the overall side structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the fixed plate of the utility model.

[0021] In the figure: 1. Support member; 2. Mounting hole; 3. Slide rail; 4. Adjustment frame; 5. Long screw rod; 6. Moving block; 7. Movable cavity; 8. First bevel gear; 9. Second bevel gear; 10. Rotating handle; 11. Positioning plate; 12. Connecting rod; 13. Fixed rod; 14. Fixed circular plate; 15. Fixed support rod; 16. Notch; 17. Sliding support rod; 18. Fixed sector plate; 19. Extension plate; 20. Fixed plate; 21. Slide groove; 22. Slider; 23. Bidirectional screw rod; 24. Clamp; 25. Upper limit plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] Referring to Figures 1-4, a tunnel excavation support device includes a support member 1. The support member 1 is surrounded and has three groups of evenly spaced supports. The support member 1 has mounting holes 2 evenly spaced therethrough. The mounting holes 2 are fixed to the support member 1 through expansion screws. A slide rail 3 is provided on the inner side of the support member 1. A fixed sector plate 18 is fixedly connected to the inner wall between the adjustment frames 4. A fixed rod 13 is fixedly connected to the top of the fixed sector plate 18. A fixed circular plate 14 is fixedly connected to the top of the fixed rod 13. Fixed support rods 15 are fixedly connected to both sides of the fixed circular plate 14. A notch 16 is provided inside the fixed support rod 15. A sliding support rod 17 is slidably connected to the inside of the notch 16. A connecting rod 12 is rotatably connected to the center of the fixed circular plate 14. The bottom of the connecting rod 12 passes through the positioning plate 11 and the end face is fixedly connected to the top of the second bevel gear 9.

[0025] An adjusting frame 4 is provided at the corresponding positions of the three groups of support members 1. The inner and outer surfaces of the adjusting frame 4 are fixedly connected with a positioning plate 11. A movable cavity 7 is opened inside the positioning plate 11. The bottom of the movable cavity 7 is rotatably connected with a second bevel gear 9. The bottom of the second bevel gear 9 passes through the positioning plate 11 and the end face is fixedly connected with a rotating handle 10; the inner wall of the adjusting frame 4 is rotatably connected with a long screw rod 5, the long screw rod 5 passes through the adjusting frame 4 and the end face is fixedly connected with a first bevel gear 8. The second bevel gear 9 is perpendicular to the first bevel gear 8 and the second bevel gear 9 is meshed with the first bevel gear 8; the long screw rod 5 passes through a threaded connection with a movable cavity 7. The movable block 6, the bottom of the movable block 6 is fixedly connected with an extension plate 19 whose upper surface is in contact with the adjustment frame 4, and the end of the extension plate 19 is fixedly connected with a fixed plate 20. The fixed plate 20 is provided with two sets of symmetrical slide grooves 21, and the slide grooves 21 are internally rotatably connected with a bidirectional screw rod 23. The thread lines of the bidirectional screw rod 23 in different slide grooves 21 are in opposite directions, and the bidirectional screw rod 23 is threadedly connected with a slider 22. The outer surface of the slider 22 close to the support member 1 is fixedly connected with a splint 24; the upper limit plate 25 is fixedly connected to the top of the fixed plate 20, and the upper limit plate 25 and the fixed plate 20 are in a vertical relationship.

[0026] After the support member 1 is installed and fixed, the user holds the fixed support rod 15 and pulls the sliding support rod 17 at the same time, so that the support member 1 is lowered into the interior of the mine, and the fixed support rod 15 can be horizontally above the mine. Then, the user goes down to the bottom of the mine and rotates the rotating handle 10, thereby driving the second bevel gear 9 to rotate. The second bevel gear 9 will drive the three sets of first bevel gears 8 above to rotate. The rotation of the first bevel gear 8 will drive the long screw rod 5 to rotate. The rotation of the long screw rod 5 will drive the support member 1 to move outward until the outer surface of the support member 1 is against the inner wall of the shaft. Then, the user uses the expansion screw to fix the support member 1 to the inner wall of the shaft.

[0027] After the installation is completed, the user rotates the bidirectional screw 23 to drive the clamping plate 24 to move outward, thereby separating the fixed plate 20 from the support 1. Then the user separates the other support 1 from the fixed plate 20 and rotates the rotating handle 10 so that the fixed plate 20 can be farther away from the support 1. Then, the user holds the fixed support rod 15 to drive the adjustment assembly to move upward, while leaving the support 1 inside the shaft and fixing it to the inner wall of the shaft. Finally, the user clamps the side of the tunnel boring machine inside the slide rail 3. Then, the user controls the moving height of the tunnel boring machine to achieve the purpose of digging the shaft.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tunnel excavation support device, comprising a support member (1), wherein the support member (1) is arranged in three groups around and evenly spaced, and characterized in that: An adjustment frame (4) is provided at corresponding positions of the three groups of support members (1), a positioning plate (11) is fixedly connected to the inner and outer surfaces of the adjustment frame (4), a movable cavity (7) is provided inside the positioning plate (11), a second bevel gear (9) is rotatably connected to the bottom of the movable cavity (7), the bottom of the second bevel gear (9) passes through the positioning plate (11) and a rotating handle (10) is fixedly connected to the end face; The inner wall of the adjusting frame (4) is rotatably connected to a long screw rod (5), the long screw rod (5) passes through the adjusting frame (4) and is fixedly connected to a first bevel gear (8) on its end face, the second bevel gear (9) is perpendicular to the first bevel gear (8) and the second bevel gear (9) is meshed with the first bevel gear (8); The long screw rod (5) is threadedly connected to a moving block (6), the bottom of the moving block (6) is fixedly connected to an extension plate (19) whose upper surface is in contact with the adjustment frame (4), the end of the extension plate (19) is fixedly connected to a fixed plate (20), the fixed plate (20) is provided with two groups of symmetrical sliding grooves (21), the sliding grooves (21) are internally rotatably connected to a bidirectional screw rod (23), the bidirectional screw rod (23) is threadedly connected to a slider (22), and the outer surface of the slider (22) close to the support member (1) is fixedly connected to a splint (24); An upper limit plate (25) is fixedly connected above the fixed plate (20), and the upper limit plate (25) and the fixed plate (20) are in a vertical relationship.

2. A tunnel excavation support device according to claim 1, characterized in that: The support member (1) is provided with mounting holes (2) at even intervals therethrough. The mounting holes (2) are used to fix the support member (1) via expansion screws. A slide rail (3) is provided on the inner side of the support member (1).

3. The tunnel boring support device according to claim 1, characterized in that: The inner walls between the adjustment frames (4) are fixedly connected with a fixed sector plate (18), the top of the fixed sector plate (18) is fixedly connected with a fixed rod (13), and the top of the fixed rod (13) is fixedly connected with a fixed circular plate (14).

4. The tunnel boring support device according to claim 3, characterized in that: Fixed support rods (15) are fixedly connected to both sides of the fixed circular plate (14), a notch (16) is provided inside the fixed support rod (15), and a sliding support rod (17) is slidably connected inside the notch (16).

5. The tunnel boring support device according to claim 4, characterized in that: A connecting rod (12) is rotatably connected to the center of the fixed circular plate (14), the bottom of the connecting rod (12) passes through the positioning plate (11) and the end surface is fixedly connected to the top of the second bevel gear (9).

6. The tunnel boring support device according to claim 1, characterized in that: The thread lines of the bidirectional screw rod (23) in different sliding grooves (21) are in opposite directions.

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