Large-deformation strong supporting device for tunnel excavation

Abstract

The invention belongs to the technical field of tunnel supporting equipment, and particularly relates to a tunnel excavation large-deformation strong supporting device which comprises two vertical supports arranged at intervals, a plurality of interval adjusting parts are fixedly connected between the top ends of the two supports, and the interval adjusting parts are evenly arranged. A top wall supporting mechanism is arranged between any two adjacent distance adjusting parts, lifting parts are fixedly connected to the side walls, away from each other, of the two supports correspondingly, translation parts are fixedly connected to the top ends of the lifting parts, and a side wall supporting mechanism is fixedly connected between the two translation parts. Deformation of the top wall and the side wall of the tunnel can be supported, the structure is simple, and the supporting effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel support equipment, and in particular relates to a large deformation strong support device for tunnel excavation. Background Art

[0002] The deformation and damage of the surrounding rock of tunnel engineering mainly include rock burst, collapse and large deformation. Among them, large deformation of tunnel refers to the deformation and instability of the surrounding rock after the excavation of the tunnel is completed due to the combined effect of various geological factors (high ground stress, groundwater or its own expansion performance), and its self-bearing capacity is lost or partially lost. It is highly progressive and time-sensitive. It is a type of geological disaster that easily causes construction difficulties, destroys construction equipment and increases construction costs.

[0003] Therefore, it is necessary to design a tunnel excavation large deformation strong support device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel excavation large deformation strong support device to solve the above-mentioned problems and achieve the purpose of supporting the top wall and side walls of the tunnel.

[0005] To achieve the above-mentioned purpose, the present invention provides the following solution: a tunnel excavation large deformation strong support device, comprising two vertical and spaced-apart brackets, a plurality of spacing adjustment parts are fixedly connected between the top ends of the two brackets, the plurality of spacing adjustment parts are evenly arranged, a top wall support mechanism is arranged between any two adjacent spacing adjustment parts, side walls of the two brackets away from each other are respectively fixedly connected with lifting parts, the top ends of the lifting parts are fixedly connected with translation parts, and a side wall support mechanism is fixedly connected between the two translation parts.

[0006] Preferably, the side wall supporting mechanism includes a support plate, which is horizontally arranged and has two ends fixedly connected to the bottom ends of the two translation parts respectively, a third motor is fixedly connected to the middle of the bottom end of the support plate, the output shaft of the third motor rotates through the support plate and is fixedly connected to a bidirectional lead screw, the bidirectional lead screw is vertically arranged and the threads at both ends have opposite rotation directions, the top of the bidirectional lead screw is fixedly connected to a limiting plate, the bidirectional lead screw is threadedly connected to a telescopic part, the two ends of the telescopic part are respectively fixedly connected to one end of a light rod, the light rod is horizontally arranged and the other end slides through the top of the translation part and is fixedly connected to the side wall supporting plate.

[0007] Preferably, the telescopic part includes a first square nut and a second square nut, the first square nut is threadedly connected to the top of the bidirectional screw, the second square nut is threadedly connected to the bottom of the bidirectional screw, both ends of the first square nut are fixedly connected to the first connecting shaft, the first connecting shaft is rotatably connected to one end of the first hinged rod, the other end of the first hinged rod is rotatably connected to the second connecting shaft, the second connecting shaft is fixedly connected to the bare rod through a connecting seat, the bottom end of the connecting seat is fixedly connected to the third connecting shaft, the third connecting shaft is rotatably connected to one end of the second hinged rod, the other end of the second hinged rod is rotatably connected to the fourth connecting shaft, and the fourth connecting shaft is fixedly connected to the second square nut.

[0008] Preferably, the lifting part includes two first motors, the first motors are fixedly connected to the bottom of the side wall of the bracket, the output shaft of the first motor is fixedly connected to the bottom end of a vertically arranged first lead screw, the top end of the first lead screw is rotatably connected to a first fixed seat, the first fixed seat is fixedly connected to the top of the side wall of the bracket, the two first lead screws are commonly threadedly connected to a lifting plate, and the translation part is fixedly connected to the top of the lifting plate.

[0009] Preferably, the translation part includes a second motor, the second motor is fixedly connected to one end of the top of the lifting plate, the second motor output shaft is fixedly connected to one end of a horizontally arranged second lead screw, the other end of the second lead screw is rotatably connected to a second fixed seat, the second fixed seat is fixedly connected to the other end of the top of the lifting plate, the second lead screw is threadedly connected to a slider, the bottom end of the slider is in sliding contact with the top of the lifting plate, the support plate is fixedly connected to the bottom of the side wall of the slider, and the light rod slides through the top of the slider.

[0010] Preferably, the spacing adjustment part includes a sleeve, which is horizontally arranged and has one end fixedly connected to the top of the side wall of the bracket away from the lifting part, and a fixing rod is slid through the two ends of the two sleeves close to each other, and a positioning pin is provided at the connecting end of the sleeve and the fixing rod, and the top wall support mechanism is fixedly connected to the fixing rod.

[0011] Preferably, the top wall supporting mechanism includes a fourth motor, the fourth motor is fixedly connected to the fixed rod, the output end of the fourth motor is fixedly connected to one end of a horizontally arranged fourth lead screw, the other end of the fourth lead screw is rotatably connected to the adjacent fixed rod, guide rods are arranged parallel and at intervals on both sides of the fourth lead screw, the guide rod and the fourth lead screw are located in the same horizontal plane, both ends of the guide rod are respectively fixedly connected to the two fixed rods, the fourth lead screw is threadedly connected to a slide seat, both sides of the slide seat are respectively slidably connected to the two guide rods, the top end of the slide seat is fixedly connected to an angle adjustment part, and the angle adjustment part is fixedly connected to the top wall supporting part.

[0012] Preferably, the angle adjustment portion includes a fifth motor, the fifth motor is fixedly connected to the top of the slide, the output shaft of the fifth motor is fixedly connected to one end of a horizontally arranged rotating shaft, both ends of the rotating shaft are rotatably connected to fixed plates respectively, the fixed plates are fixedly connected to the top of the slide, and the top wall support portion is fixedly connected to the rotating shaft.

[0013] Preferably, the top wall supporting portion comprises a telescopic rod, one end of the telescopic rod is fixedly connected to the rotating shaft, and the other end of the telescopic rod is fixedly connected to a top wall supporting plate.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The present invention forms an overall frame of the support device by means of two brackets. A spacing adjustment portion arranged between the tops of the two brackets can adjust the distance between the two brackets according to the size of the tunnel, thereby improving the application range of the support device. The top wall support mechanism arranged on the spacing adjustment portion can support the top wall of the tunnel, the side wall support mechanism can support the side wall of the tunnel, and the lifting portion and the translation portion can act simultaneously to adjust the position of the side wall support mechanism, thereby ensuring that the side wall support mechanism can support the deformation of different positions of the side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0019] Figure 3 It is a schematic diagram of the side wall support mechanism of the present invention;

[0020] Figure 4 for Figure 3 A partial enlarged view of B.

[0021] Among them, 1. bracket; 2. first motor; 3. first lead screw; 4. first fixed seat; 5. lifting plate; 6. second motor; 7. second lead screw; 8. second fixed seat; 9. support plate; 10. third motor; 11. bidirectional lead screw; 12. limit plate; 13. first square nut; 14. first connecting shaft; 15. first hinged rod; 16. second connecting shaft; 17. connecting seat; 18. light rod; 19. third connecting shaft; 20. second hinged rod; 21. fourth connecting shaft; 22. second square nut; 23. slider; 24. side wall support plate; 25. fourth motor; 26. fourth lead screw; 27. guide rod; 28. slide seat; 29. ​​fifth motor; 30. rotating shaft; 31. fixed plate; 32. telescopic rod; 33. top wall support plate; 34. fixed rod; 35. sleeve; 36. positioning pin. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1 to 4 As shown, the present invention provides a large deformation strong support device for tunnel excavation, comprising two vertical and spaced apart supports 1, a plurality of spacing adjustment parts are fixedly connected between the top ends of the two supports 1, the plurality of spacing adjustment parts are evenly arranged, a top wall support mechanism is arranged between any two adjacent spacing adjustment parts, side walls of the two supports 1 that are away from each other are respectively fixedly connected with lifting parts, a translation part is fixedly connected to the top end of the lifting part, and a side wall support mechanism is fixedly connected between the two translation parts.

[0025] The overall framework of the support device is formed by the two brackets 1. The spacing adjustment portion arranged between the tops of the two brackets 1 can adjust the distance between the two brackets 1 according to the size of the tunnel, thereby improving the application range of the support device. The top wall support mechanism arranged on the spacing adjustment portion can support the top wall of the tunnel, and the side wall support mechanism can support the side wall of the tunnel. The lifting portion and the translation portion can act simultaneously to adjust the position of the side wall support mechanism, thereby ensuring that the side wall support mechanism can support the deformation of different positions of the side wall.

[0026] A further optimized solution is that the side wall supporting mechanism includes a support plate 9, which is horizontally arranged and has its two ends fixedly connected to the bottom ends of the two translation parts respectively, a third motor 10 is fixedly connected to the middle of the bottom end of the support plate 9, the output shaft of the third motor 10 rotates through the support plate 9 and is fixedly connected to a bidirectional lead screw 11, the bidirectional lead screw 11 is vertically arranged and the threads at both ends have opposite rotation directions, a limiting plate 12 is fixedly connected to the top of the bidirectional lead screw 11, the bidirectional lead screw 11 is threadedly connected to a telescopic part, one end of a light rod 18 is fixedly connected to both ends of the telescopic part respectively, the light rod 18 is horizontally arranged and the other end slides through the top of the translation part and is fixedly connected to the side wall supporting plate 24.

[0027] After the device is installed in the tunnel, the position of the side wall support plate 24 is adjusted by the lifting part and the translation part according to the position where the tunnel side wall is deformed. When the side wall support plate 24 is adjusted to the position corresponding to the deformed side wall, the telescopic part controls the side wall support plate 24 to extend and support the deformed position, thereby providing support for the deformed position.

[0028] A further optimized solution is provided, the telescopic part includes a first square nut 13 and a second square nut 22, the first square nut 13 is threadedly connected to the top of the bidirectional lead screw 11, the second square nut 22 is threadedly connected to the bottom of the bidirectional lead screw 11, both ends of the first square nut 13 are respectively fixedly connected with the first connecting shaft 14, the first connecting shaft 14 is rotatably connected to one end of the first hinged rod 15, the other end of the first hinged rod 15 is rotatably connected to the second connecting shaft 16, the second connecting shaft 16 is fixedly connected to the light rod 18 through a connecting seat 17, the bottom end of the connecting seat 17 is fixedly connected to the third connecting shaft 19, the third connecting shaft 19 is rotatably connected to one end of the second hinged rod 20, the other end of the second hinged rod 20 is rotatably connected to the fourth connecting shaft 21, and the fourth connecting shaft 21 is fixedly connected to the second square nut 22.

[0029] When the side wall support plate 24 is controlled to extend, the third motor 10 works to drive the bidirectional lead screw 11 to rotate. Since the threads at both ends of the bidirectional lead screw 11 have opposite rotation directions, the first square nut 13 and the second square nut 22 can be moved closer to or farther away from each other when the bidirectional lead screw 11 rotates in one direction. When the two are closer to each other, the side wall support plate 24 can be driven to move outward, and when the two are away from each other, the side wall support plate 24 can be driven to retract.

[0030] A further optimized solution is that the lifting part includes two first motors 2, the first motors 2 are fixedly connected to the bottom of the side wall of the bracket 1, the output shaft of the first motor 2 is fixedly connected to the bottom end of the vertically arranged first screw 3, the top of the first screw 3 is rotatably connected to the first fixed seat 4, the first fixed seat 4 is fixedly connected to the top of the side wall of the bracket 1, the two first screws 3 are commonly threadedly connected to the lifting plate 5, and the translation part is fixedly connected to the top of the lifting plate 5.

[0031] A further optimized solution is that the translation part includes a second motor 6, the second motor 6 is fixedly connected to one end of the top of the lifting plate 5, the output shaft of the second motor 6 is fixedly connected to one end of a horizontally arranged second lead screw 7, the other end of the second lead screw 7 is rotatably connected to a second fixed seat 8, the second fixed seat 8 is fixedly connected to the other end of the top of the lifting plate 5, the second lead screw 7 is threadedly connected to a slider 23, the bottom end of the slider 23 is in sliding contact with the top of the lifting plate 5, the support plate 9 is fixedly connected to the bottom of the side wall of the slider 23, and the light rod 18 slides through the top of the slider 23.

[0032] A further optimized solution is that the spacing adjustment part includes a sleeve 35, which is horizontally arranged and one end of which is fixedly connected to the top of the side wall of the bracket 1 away from the lifting part, and a fixing rod 34 is slid through the two ends of the two sleeves 35 close to each other. A positioning pin 36 is provided at the connecting end of the sleeve 35 and the fixing rod 34, and the top wall support mechanism is fixedly connected to the fixing rod 34.

[0033] The distance between the two brackets 1 is adjusted according to the size of the tunnel to be supported. When adjusting, the positioning pin 36 is first pulled out, and then the fixing rod 34 is slid out of the sleeve 35 by a certain length. When the two brackets 1 are close to the side walls of the tunnel, the positioning pin 36 is inserted into the fixing rod 34 and the sleeve 35.

[0034] A further optimized solution is that the top wall supporting mechanism includes a fourth motor 25, the fourth motor 25 is fixedly connected to the fixed rod 34, the output end of the fourth motor 25 is fixedly connected to one end of a horizontally arranged fourth lead screw 26, the other end of the fourth lead screw 26 is rotatably connected to the adjacent fixed rod 34, guide rods 27 are arranged parallel and at intervals on both sides of the fourth lead screw 26, the guide rod 27 and the fourth lead screw 26 are located in the same horizontal plane, the two ends of the guide rod 27 are respectively fixedly connected to the two fixed rods 34, the fourth lead screw 26 is threadedly connected to a slide 28, the two sides of the slide 28 are respectively slidably connected to the two guide rods 27, the top of the slide 28 is fixedly connected to an angle adjustment portion, and the angle adjustment portion is fixedly connected to the top wall supporting portion.

[0035] The fourth motor 25 drives the fourth lead screw 26 to rotate, and the slide 28 can move horizontally on the fourth lead screw 26 to approach the position where the top wall is deformed.

[0036] A further optimized solution is that the angle adjustment part includes a fifth motor 29, which is fixedly connected to the top of the slide 28, and the output shaft of the fifth motor 29 is fixedly connected to one end of a horizontally arranged rotating shaft 30, and both ends of the rotating shaft 30 are rotatably connected to fixed plates 31 respectively, and the fixed plate 31 is fixedly connected to the top of the slide 28, and the top wall support part is fixedly connected to the rotating shaft 30.

[0037] When the curved tunnel top wall is deformed, it may occur at the top or any position on both sides of the top wall. At this time, the fifth motor 29 can be used to control the rotation of the rotating shaft 30, and then the top wall support part can be controlled to rotate at any angle in the space above the horizontal plane with the rotating shaft 30 as the center, so as to support the deformation of any position of the top wall.

[0038] According to a further optimized solution, the top wall support portion includes a telescopic rod 32 , one end of the telescopic rod 32 is fixedly connected to the rotating shaft 30 , and the other end of the telescopic rod 32 is fixedly connected to the top wall support plate 33 .

[0039] After the fifth motor 29 drives the telescopic rod 32 to rotate to a position corresponding to the deformed top wall, the telescopic rod 32 extends to move the top wall support plate 33 to the deformed position for support.

[0040] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. A tunnel excavation large deformation strong support device, characterized in that: The invention comprises two vertical and spaced-apart brackets (1), a plurality of spacing adjustment parts being fixedly connected between the top ends of the two brackets (1), the plurality of spacing adjustment parts being evenly arranged, a top wall support mechanism being arranged between any two adjacent spacing adjustment parts, a lifting part being fixedly connected to the side walls of the two brackets (1) that are away from each other, a translation part being fixedly connected to the top ends of the lifting parts, and a side wall support mechanism being fixedly connected between the two translation parts.

2. A tunnel excavation large deformation strong support device according to claim 1, characterized in that: The side wall support mechanism comprises a support plate (9), the support plate (9) is horizontally arranged and its two ends are respectively fixedly connected to the bottom ends of the two translation parts, a third motor (10) is fixedly connected to the middle of the bottom end of the support plate (9), the output shaft of the third motor (10) rotates through the support plate (9) and is fixedly connected to a bidirectional lead screw (11), the bidirectional lead screw (11) is vertically arranged and the threads at both ends have opposite rotation directions, the top end of the bidirectional lead screw (11) is fixedly connected to a limiting plate (12), the bidirectional lead screw (11) is threadedly connected to a telescopic part, and the two ends of the telescopic part are respectively fixedly connected to one end of a light rod (18), the light rod (18) is horizontally arranged and the other end slides through the top end of the translation part and is fixedly connected to the side wall support plate (24).

3. A tunnel excavation large deformation strong support device according to claim 2, characterized in that: The telescopic part comprises a first square nut (13) and a second square nut (22), wherein the first square nut (13) is threadedly connected to the top of the bidirectional screw (11), and the second square nut (22) is threadedly connected to the bottom of the bidirectional screw (11), and the two ends of the first square nut (13) are respectively fixedly connected to a first connecting shaft (14), the first connecting shaft (14) is rotatably connected to one end of a first hinged rod (15), and the other end of the first hinged rod (15) is rotatably connected to a second connecting shaft (16), and the second connecting shaft (16) is fixedly connected to the bare rod (18) through a connecting seat (17), and the bottom end of the connecting seat (17) is fixedly connected to a third connecting shaft (19), and the third connecting shaft (19) is rotatably connected to one end of a second hinged rod (20), and the other end of the second hinged rod (20) is rotatably connected to a fourth connecting shaft (21), and the fourth connecting shaft (21) is fixedly connected to the second square nut (22).

4. A tunnel excavation large deformation strong support device according to claim 2, characterized in that: The lifting part comprises two first motors (2), the first motors (2) are fixedly connected to the bottom of the side wall of the bracket (1), the output shaft of the first motor (2) is fixedly connected to the bottom end of a vertically arranged first lead screw (3), the top end of the first lead screw (3) is rotatably connected to a first fixed seat (4), the first fixed seat (4) is fixedly connected to the top of the side wall of the bracket (1), the two first lead screws (3) are commonly threadedly connected to a lifting plate (5), and the translation part is fixedly connected to the top end of the lifting plate (5).

5. A tunnel excavation large deformation strong support device according to claim 4, characterized in that: The translation part comprises a second motor (6), the second motor (6) is fixedly connected to one end of the top of the lifting plate (5), the output shaft of the second motor (6) is fixedly connected to one end of a second screw (7) arranged horizontally, the other end of the second screw (7) is rotatably connected to a second fixed seat (8), the second fixed seat (8) is fixedly connected to the other end of the top of the lifting plate (5), the second screw (7) is threadedly connected to a slider (23), the bottom end of the slider (23) is in sliding contact with the top of the lifting plate (5), the support plate (9) is fixedly connected to the bottom of the side wall of the slider (23), and the light rod (18) slides through the top of the slider (23).

6. The tunnel excavation large deformation strong support device according to claim 1 is characterized in that: The spacing adjustment portion comprises a sleeve (35), the sleeve (35) being arranged horizontally and having one end fixedly connected to the top of the side wall of the bracket (1) away from the lifting portion, a fixing rod (34) being slidably penetrated inside the ends of the two sleeves (35) close to each other, a positioning pin (36) being arranged at the connection end between the sleeve (35) and the fixing rod (34), and the top wall supporting mechanism being fixedly connected to the fixing rod (34).

7. A tunnel excavation large deformation strong support device according to claim 6, characterized in that: The top wall supporting mechanism comprises a fourth motor (25), the fourth motor (25) is fixedly connected to the fixed rod (34), the output end of the fourth motor (25) is fixedly connected to one end of a fourth lead screw (26) arranged horizontally, the other end of the fourth lead screw (26) is rotatably connected to the adjacent fixed rod (34), both sides of the fourth lead screw (26) are parallel and spaced apart with guide rods (27), the guide rods (27) and the fourth lead screw (26) are located in the same horizontal plane, the two ends of the guide rod (27) are respectively fixedly connected to the two fixed rods (34), the fourth lead screw (26) is threadedly connected to a slide seat (28), the two sides of the slide seat (28) are respectively slidably connected to the two guide rods (27), the top end of the slide seat (28) is fixedly connected to an angle adjustment portion, and the angle adjustment portion is fixedly connected to the top wall supporting portion.

8. A tunnel excavation large deformation strong support device according to claim 7, characterized in that: The angle adjustment portion comprises a fifth motor (29), the fifth motor (29) is fixedly connected to the top of the slide seat (28), the output shaft of the fifth motor (29) is fixedly connected to one end of a horizontally arranged rotating shaft (30), both ends of the rotating shaft (30) are rotatably connected to fixed plates (31), the fixed plate (31) is fixedly connected to the top of the slide seat (28), and the top wall support portion is fixedly connected to the rotating shaft (30).

9. A tunnel excavation large deformation strong support device according to claim 8, characterized in that: The top wall support portion comprises a telescopic rod (32), one end of the telescopic rod (32) is fixedly connected to the rotating shaft (30), and the other end of the telescopic rod (32) is fixedly connected to a top wall support plate (33).

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