A pipe shed for advanced pre-support of soft surrounding rock tunnels

Abstract

The present application relates to a pipe shed for advance pre-support of soft surrounding rock tunnels, belonging to the technical field of pipe shed equipment, which comprises a steel pipe and a steel arch frame, wherein a connecting block is fixedly arranged on the outer side wall of the steel pipe, a first clamping groove is provided on the side wall of the connecting block, a slide plate is slidably connected to the steel arch frame, a fixing component which can be fixed to the steel arch frame is provided on the slide plate, a connecting plate is slidably connected to the side of the slide plate away from the steel arch frame, a sliding groove is provided on the side of the connecting plate away from the slide plate, the connecting block and the sliding groove are plug-fitted, a first avoidance groove is provided on the side wall of the sliding groove of the connecting plate, an auxiliary plate is provided at the first avoidance groove, the auxiliary plate and the connecting plate are bolted, a first clamping block is provided on the side of the auxiliary plate facing the connecting plate, the first clamping block is in the first avoidance groove, a first spring is fixedly arranged between the first clamping block and the auxiliary plate, the first clamping block and the first clamping groove are clamped and adapted, and one side of the first clamping block is provided with an inclined surface. The present application has the effect of improving the installation efficiency of the pipe shed.

Description

Technical Field

[0001] The present application relates to the technical field of pipe-roof equipment, and in particular to a pipe-roof for advanced pre-support of soft surrounding rock tunnels. Background Art

[0002] The pipe shed is mainly used in tunnel projects with weak and broken surrounding rocks, such as weak and gravel formations, soft rocks, and rock piles, and is suitable for occasions with strict requirements on surrounding rock deformation and surface subsidence. It works through the following multiple effects: the beam arch effect inhibits the loosening and collapse of the surrounding rock; the reinforcement effect improves the physical and mechanical properties of the surrounding rock; the ring groove effect reduces the damage to the surrounding rock; and the high-rigidity support ensures construction safety. These characteristics together ensure the effective application of the pipe shed in tunnel projects.

[0003] During the construction of the pipe-roof support system, the steel pipes are first accurately inserted into the pre-drilled holes, and then the steel arch is fixed to ensure that one side wall of the steel arch fits the steel pipe tightly. Then, professional technicians will perform precise welding on the contact parts between the steel pipe and the steel arch to make the two closely connected and integrated. This step significantly enhances the overall stability and load-bearing capacity of the pipe-roof support system, thereby ensuring the safety and reliability of the construction.

[0004] With regard to the above-mentioned related technologies, the steel pipes and the steel arch frames are welded by technicians, which is time-consuming and labor-intensive, and thus has the defect of low efficiency in pipe shed installation. Summary of the invention

[0005] In order to improve the installation efficiency of the pipe roof, the present application provides a pipe roof for advance pre-support of soft surrounding rock tunnels.

[0006] The pipe shed provided in this application for advanced pre-support of soft surrounding rock tunnels adopts the following technical solution:

[0007] A pipe shed for advance pre-support of a soft rock tunnel comprises a steel pipe and a steel arch frame, wherein a connecting block is fixedly arranged on the outer side wall of the steel pipe, a first clamping groove is provided on the side wall of the connecting block, a slide plate is slidably connected to the steel arch frame, a fixing assembly which can be fixed to the steel arch frame is provided on the slide plate, a connecting plate is slidably connected to the side of the slide plate away from the steel arch frame, a slide groove is provided on the side of the connecting plate away from the slide plate, the slide groove runs through one side wall of the connecting plate, the connecting block and the slide groove are plug-fitted, a first avoidance groove is provided on the side wall of the slide groove of the connecting plate, the first avoidance groove runs through one side wall of the connecting plate, an auxiliary plate is provided at the first avoidance groove, the auxiliary plate and the connecting plate are bolted, a first clamping block is provided on the side of the auxiliary plate facing the connecting plate, the first clamping block is in the first avoidance groove, a first spring is fixedly arranged between the first clamping block and the auxiliary plate, the first clamping block and the first clamping groove are clamped and adapted, and one side of the first clamping block is arranged as an inclined surface.

[0008] By adopting the above technical solution, after the steel pipe is clamped to the pre-drilled hole, the steel arch is moved to the position of the steel pipe, and then the slide plate is slid to drive the connecting plate to move. When the slide groove on the connecting plate is aligned with the connecting block, the connecting plate is pushed toward the direction of the steel pipe, so that the connecting block gradually slides into the slide groove. In this process, the connecting block first contacts the inclined surface of the first clamping block, and forces the first clamping block to move into the first avoidance groove, and the first spring is compressed at the same time. Once the first clamping groove is aligned with the first clamping block, the first spring releases the elastic force and pushes the first clamping block into the first clamping groove, thereby realizing the clamping fixation of the connecting block and the connecting plate, and also completing the connection between the steel pipe and the steel arch. In addition, the fixing assembly completes the fixation of the slide plate and the steel arch, so that the slide plate is not easy to move relative to the steel arch, and there is no need for technicians to manually weld the steel pipe and the steel arch, which saves time and improves the work efficiency of the pipe shed installation.

[0009] Optionally, the slide plate has a first movable groove formed at two opposite ends of the side facing away from the steel arch frame along its own length direction, the first movable groove penetrates one side wall of the slide plate, the slide plate has a second movable groove formed on the side wall of the first movable groove, the slide plate is slidably connected to a movable block in the second movable groove, the slide plate is slidably connected to a movable rod in the first movable groove, the movable block is fixedly connected to the movable rod on a side facing the first movable groove, and the connecting plate is fixedly connected to a side of the movable rod facing outside the first movable groove.

[0010] By adopting the above technical solution, during the movement of the connecting plate, the connecting plate drives the moving rod to move, and the moving rod drives the moving block to move, thereby realizing the sliding connection between the connecting plate and the sliding plate.

[0011] Optionally, the steel arch frame includes an I-beam and a connecting seat, the I-beam is arched, and two I-beams and connecting seats are each provided with two, the two I-beams are arranged in parallel, the two connecting seats are arranged at the ends of the I-beams, the two ends of the I-beams are fixedly connected to adjacent connecting seats, the two ends of the slide are respectively overlapped on the two I-beams, the slide and the I-beam are slidably connected, two support plates are fixedly provided on the side of the slide away from the connecting plate, the two support plates are between the two I-beams, the fixing assembly includes a bidirectional screw rod and a fixing plate, the bidirectional screw rod is arranged at the supporting plate, the bidirectional screw rod passes through the two support plates and is rotatably connected to the support plate, the end of the bidirectional screw rod extends to the I-beam, the two fixing plates are respectively arranged on the sides of the two support plates away from each other, the bidirectional screw rod passes through the fixing plate and is threadedly connected to the fixing plates, a telescopic rod is fixedly provided between the fixing plate and the adjacent support plates, and a rotating assembly for driving the bidirectional screw rod to rotate is provided at the slide plate.

[0012] By adopting the above technical solution, when the skateboard moves, the skateboard drives the supporting plate to move, the supporting plate drives the bidirectional screw and the telescopic rod to move, the bidirectional screw drives the fixed plate to move, and after the skateboard moves to the set position, the rotating assembly drives the bidirectional screw to rotate, and under the guidance of the telescopic rod, the bidirectional screw drives the two fixed plates to move away from each other, and the fixed rod is in close contact with the side walls of the I-beam on both sides to complete the fixation of the skateboard.

[0013] Optionally, a rotating rod is provided on the skateboard, the rotating rod passes through the skateboard and is rotatably connected to the skateboard, the rotating assembly includes a first bevel gear and a second bevel gear, the first bevel gear and one end of the rotating rod close to the bidirectional screw rod are fixedly connected, the second bevel gear is fixed on the bidirectional screw rod, the first bevel gear and the second bevel gear are meshed, and a power assembly for providing power for the rotation of the rotating rod is provided at the skateboard.

[0014] By adopting the above technical solution, the power component drives the rotating rod to rotate, the rotating rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the bidirectional screw to rotate, so that the rotating component realizes the function of driving the bidirectional screw to rotate.

[0015] Optionally, the power assembly includes a gear and a rack, the gear is arranged on the side of the skateboard facing the connecting plate, the gear is fixedly connected to an end of the rotating rod away from the first bevel gear, the rack is fixedly connected to one side of the two moving rods, the length direction of the rack is parallel to the length direction of the moving rod, and the rack and the gear are meshed and matched.

[0016] By adopting the above technical solution, when the connecting plate moves toward the steel pipe, the connecting plate drives the moving rod to move, and the moving rod drives the rack to move. During the movement of the rack, the rack and the gear are meshed and drive the gear to rotate, and the gear drives the rotating rod to rotate. After the connecting plate moves to the set position, the fixed plate and the side wall of the I-beam abut against each other, so that the power component realizes the function of providing power for the rotation of the rotating rod.

[0017] Optionally, the side of the fixing plate facing the I-beam and the side of the I-beam facing the fixing plate are both configured as frosted surfaces.

[0018] By adopting the above technical solution and setting the frosted surface, the friction between the fixing plate and the I-beam is increased, so that sliding between the fixing plate and the I-beam is not likely to occur, thereby improving the stability of the slide plate fixation.

[0019] Optionally, a second avoidance groove is provided on the side of the skateboard away from the support plate, and the gear is located in the second avoidance groove. A third avoidance groove is provided on the side of the skateboard away from the support plate for avoiding movement of the rack, and the second avoidance groove and the third avoidance groove are connected.

[0020] By adopting the above technical solution, the provision of the second avoidance groove and the third avoidance groove makes it difficult for the gear to hinder the movement of the connecting plate, thus facilitating the movement of the connecting plate.

[0021] Optionally, a support rod is fixedly provided at one end of the connecting plate, a cover is connected to the support rod, and a grouting pipe is connected to the cover.

[0022] By adopting the above technical solution, during the movement of the connecting plate, the connecting plate drives the support rod to move, and the support rod drives the cover to move. After the connecting plate moves to the set position, the cover blocks the end of the steel pipe outside the hole, and at the same time, grouting is performed into the steel pipe through the grouting pipe. The setting of the cover and the grouting pipe provides convenience for grouting into the steel pipe.

[0023] Optionally, a third movable groove is provided on the side of the slide away from the support plate, and the slide is slidably connected to a second clamping block in the third movable groove. A second spring is fixed between the second clamping block and the bottom wall of the third movable groove, and the end of the second clamping block away from the second spring is set as an inclined surface. A second clamping groove is provided on the side of the connecting plate facing the slide, and the second clamping block and the second clamping groove are clamped and adapted.

[0024] By adopting the above technical solution, when the second clamping block is entirely in the third movable groove, the second spring is in a compressed state. After the connecting plate moves to the set position, the second clamping block is aligned with the second clamping groove. The second spring releases the elastic force and pushes the second clamping block to move toward the second clamping groove. One end of the second clamping block moves into the second clamping groove, completing the clamping and fixing of the slide plate and the connecting plate, so that the connecting plate is not easily moved relative to the slide plate.

[0025] Optionally, a sliding rod is fixedly provided on the side of the second clamping block facing the second spring, an end of the sliding rod away from the second clamping block passes through the slide plate, the sliding rod and the slide plate are slidably connected, and the second spring is sleeved outside the sliding rod.

[0026] By adopting the above technical solution, when the second clamping block moves toward the second clamping slot, the second clamping block drives the sliding rod to move. If it is necessary to release the clamping fixation between the connecting plate and the sliding plate, the sliding rod is pulled in the direction away from the connecting plate. The sliding rod drives the second clamping block to move, so that the second clamping block is disengaged from the second clamping slot, and the clamping fixation between the sliding plate and the connecting plate is released. Therefore, the setting of the sliding rod provides convenience for releasing the clamping fixation between the sliding plate and the connecting plate.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. After the first clamping block and the first clamping slot are aligned, the first spring releases its elastic force and pushes the first clamping block to move toward the first clamping slot, and one end of the first clamping block is clamped into the first clamping slot, completing the fixation of the connecting plate and the connecting block, and then completing the fixation of the steel pipe and the steel arch frame, without the need for manual welding by technicians, saving time, and thus improving the work efficiency of pipe shed installation;

[0029] 2. The slide plate can be moved on the steel arch frame, which facilitates the alignment of the slide groove and the connecting block of the connecting plate;

[0030] 3. By moving the connecting block, the fixing assembly completes the fixation of the slide plate and the steel arch frame. There is no need for technicians to manually complete the fixation of the slide plate and the steel arch frame, which saves time and improves the work efficiency of the pipe roof installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a pipe shed for advanced pre-support of a soft surrounding rock tunnel according to an embodiment of the present application;

[0032] Figure 2 This is a cross-sectional view of the structure of the fixing assembly in the embodiment of the present application;

[0033] Figure 3 This is a cross-sectional view of the structure of the connecting plate in the embodiment of the present application;

[0034] Figure 4 This is a cross-sectional view of the structure of the slide plate in the embodiment of the present application;

[0035] Figure 5 This is a cross-sectional view of the structure of the power assembly in the embodiment of the present application;

[0036] Figure 6 This is a structural cross-sectional view of the third movable groove in the embodiment of the present application.

[0037] In the figure, 1, steel pipe; 11, connecting block; 111, first slot; 2, steel arch; 21, I-beam; 22, connecting seat; 3, slide plate; 31, first moving slot; 32, second moving slot; 33, moving block; 34, moving rod; 35, supporting plate; 351, telescopic rod; 36, rotating rod; 37, second avoidance slot; 38, third avoidance slot; 39, third moving slot; 4, fixing assembly; 41, bidirectional screw rod ; 42. Fixed plate; 5. Connecting plate; 51. Slide groove; 52. First avoidance groove; 53. Auxiliary plate; 54. First clamping block; 55. First spring; 56. Support rod; 57. Cover; 58. Grouting pipe; 59. Second clamping groove; 6. Rotating assembly; 61. First bevel gear; 62. Second bevel gear; 7. Power assembly; 71. Gear; 72. Rack; 8. Second clamping block; 81. Second spring; 9. Slide rod. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0039] The embodiment of the present application discloses a pipe shed for advance pre-support of a tunnel with soft surrounding rock.

[0040] refer to Figure 1 A pipe shed for advance pre-support of soft rock tunnels includes a steel pipe 1 and a steel arch frame 2. The steel arch frame 2 includes an I-beam 21 and a connecting seat 22. There are two I-beams 21 and two connecting seats 22. The I-beams 21 are arched and parallel to each other. The two connecting seats 22 are respectively arranged at both ends of the I-beam 21. The two ends of the I-beam 21 are respectively fixedly connected to the two connecting seats 22. A plurality of steel pipes 1 are provided, and the plurality of steel pipes 1 are arranged in sequence along the I-beam 21.

[0041] refer to Figure 1 , Figure 2 and Figure 3 A plurality of slide plates 3 are arranged on the I-beam 21, and the plurality of slide plates 3 are arranged in sequence along the I-beam 21. The slide plates 3 correspond to the steel pipes 1 one by one. The two ends of the slide plates 3 are respectively overlapped on the two I-beams 21. The slide plates 3 and the I-beams 21 are slidably connected. A connecting plate 5 is slidably connected on the side of the slide plate 3 away from the I-beam 21. A sliding groove 51 is provided on the side of the connecting plate 5 away from the slide plate 3. The sliding groove 51 runs through a side wall of the connecting plate 5. A connecting block 11 is fixed on the steel pipe 1. The connecting block 11 and the sliding groove 51 are plug-fitted. The opposite sides of the connecting block 11 are both opened. A first clamping groove 111 is provided, and the connecting plate 5 is provided with first avoidance grooves 52 on the opposite side walls of the slide groove 51. The first avoidance groove 52 runs through one side wall of the connecting plate 5. The connecting plate 5 is slidably connected with a first clamping block 54 in the first avoidance groove 52. The first clamping block 54 and the first clamping groove 111 are clamped and adapted. The connecting plate 5 is bolted with an auxiliary plate 53 at one end of the first avoidance groove 52 away from the slide groove 51. A first spring 55 is fixed between the auxiliary plate 53 and the first clamping block 54, and the side of the first clamping block 54 away from the first spring 55 is set as an inclined surface.

[0042] After the steel pipe 1 is fixed in the hole, the I-beam 21 is moved, and the I-beam 21 drives the slide plate 3 and the connecting plate 5 to move. After the I-beam 21 moves to the set position, the slide plate 3 is slid, and the slide plate 3 drives the connecting plate 5 to move. When the slide plate 3 moves to the corresponding steel pipe 1, the slide groove 51 of the connecting plate 5 is aligned with the connecting block 11 by adjustment, and then the connecting plate 5 is slid toward the connecting block 11. As the connecting block 11 gradually enters the slide groove 51, the connecting block 11 first contacts the inclined surface of the first clamping block 54 and squeezes the first clamping block 54 toward the first avoidance groove 52. The first spring 55 is compressed. After the first clamping block 54 is aligned with the first clamping groove 111, the first spring 55 releases its elastic force and pushes the first clamping block 54 to move toward the first clamping groove 111. One end of the first clamping block 54 is clamped into the first clamping groove 111, completing the fixing of the connecting plate 5 and the connecting block 11, thereby realizing the connection between the steel pipe 1 and the I-beam 21.

[0043] refer to Figure 2 and Figure 4 The skateboard 3 has first movable grooves 31 at two opposite ends facing the connecting plate 5 along its length direction, the first movable groove 31 runs through a side wall of the skateboard 3, the skateboard 3 has a second movable groove 32 on the side wall of the first movable groove 31 along the length direction of the first movable groove 31, the skateboard 3 is slidably connected with a movable block 33 in the second movable groove 32, the skateboard 3 is slidably connected with a movable rod 34 in the first movable groove 31, the movable block 33 is fixedly connected to the movable rod 34 on a side wall facing the first movable groove 31, and the connecting plate 5 is fixedly connected to the movable rod 34 on a side facing the skateboard 3.

[0044] During the movement of the connecting plate 5, the connecting plate 5 drives the moving rod 34 to move, and the moving rod 34 drives the moving block 33 to move, thereby realizing the sliding connection between the connecting plate 5 and the slide plate 3. At the same time, the setting of the moving block 33 makes it difficult for the moving rod 34 to separate from the slide plate 3, thereby improving the stability of the sliding connection between the connecting plate 5 and the slide plate 3.

[0045] Reference 2. Figure 4 and Figure 5 Two support plates 35 are fixedly provided on the side of the slide plate 3 away from the connecting plate 5. The support plates 35 are perpendicular to the slide plate 3 and parallel to each other. The support plates 35 are located between the two I-beams 21. A fixing component 4 for fixing the slide plate 3 and the I-beam 21 is provided at the support plates 35.

[0046] The fixing assembly 4 includes a bidirectional screw rod 41 and a fixing plate 42. The bidirectional screw rod 41 is arranged at the support plate 35. The bidirectional screw rod 41 and the support plate 35 are perpendicular. The bidirectional screw rod 41 passes through the two support plates 35. The bidirectional screw rod 41 and the support plate 35 are rotatably connected. Two fixing plates 42 are provided. The two fixing plates 42 are respectively arranged at the two ends of the bidirectional screw rod 41. The fixing plate 42 and the support plate 35 are parallel. The bidirectional screw rod 41 passes through the fixing plate 42 and the fixing plate 42 is threadedly connected. A telescopic rod 351 is fixed between the fixing plate 42 and the support plate 35. The telescopic rod 351 is composed of a plurality of rod bodies sleeved together, and the rod bodies are slidably connected. The side of the fixing plate 42 facing the I-beam 21 and the side of the I-beam 21 facing the fixing plate 42 are both set to frosted surfaces. A rotating assembly 6 for driving the bidirectional screw rod 41 to rotate and a power assembly 7 for providing power to the rotating assembly 6 are provided at the slide plate 3.

[0047] A rotating rod 36 is provided at the skateboard 3, and the length direction of the rotating rod 36 is perpendicular to the skateboard 3. The rotating rod 36 passes through the skateboard 3, and the rotating rod 36 is rotatably connected to the skateboard 3. The rotating assembly 6 includes a first bevel gear 61 and a second bevel gear 62. The first bevel gear 61 is fixedly connected to an end of the rotating rod 36 away from the connecting plate 5, the first bevel gear 61 is located between the two support plates 35, the second bevel gear 62 is fixed on the bidirectional screw rod 41, the second bevel gear 62 is located between the two support plates 35, and the first bevel gear 61 and the second bevel gear 62 are meshed.

[0048] A second avoidance groove 37 is provided on the side of the skateboard 3 facing the connecting plate 5, and a third avoidance groove 38 is provided on the side of the second avoidance groove 37 of the skateboard 3. The third avoidance groove 38 runs through a side wall of the skateboard 3, and the third avoidance groove 38 is parallel to and connected with the first moving groove 31. The second avoidance groove 37 and the third avoidance groove 38 are connected. The power assembly 7 includes a rack 72 and a gear 71. The rack 72 is arranged at the third avoidance groove 38, one side of the rack 72 is fixedly connected to the moving rod 34, and the length direction of the rack 72 is parallel to the length direction of the moving rod 34. The gear 71 is arranged in the second avoidance groove 37, and the end of the rotating rod 36 away from the first bevel gear 61 is fixedly connected to the gear 71, and the rack 72 and the gear 71 are meshed.

[0049] After the slide groove 51 of the connecting plate 5 is aligned with the connecting block 11, in the process of moving the connecting plate 5 toward the connecting block 11, the connecting plate 5 drives the moving rod 34 to move, the moving rod 34 drives the rack 72 to move, the rack 72 drives the gear 71 to rotate, the gear 71 drives the rotating rod 36 to rotate, the rotating rod 36 drives the first bevel gear 61 to rotate, the first bevel gear 61 drives the second bevel gear 62 to rotate, the second bevel gear 62 drives the bidirectional screw rod 41 to rotate, and under the guidance of the telescopic rod 351, the bidirectional screw rod 41 drives the fixed plate 42 to move toward the adjacent I-beam 21. After the connecting plate 5 moves to the set position, the fixed plate 42 and the I-beam 21 are tightly abutted, so that the slide plate 3 is not easy to move relative to the I-beam 21, thereby achieving the fixation of the slide plate 3 and the I-beam 21.

[0050] refer to Figure 2 and Figure 6 A third moving groove 39 is provided on the side of the slide plate 3 facing the connecting plate 5, and the slide plate 3 is slidably connected with a second clamping block 8 in the third moving groove 39. A second spring 81 is fixedly provided between the second clamping block 8 and the inner bottom wall of the third moving groove 39, and the side of the second clamping block 8 away from the second spring 81 is set as an inclined surface. A second clamping groove 59 is provided on the side of the connecting plate 5 facing the slide plate 3, and the second clamping block 8 and the second clamping groove 59 are snap-fitted together. A sliding rod 9 is fixedly provided on the side of the second clamping block 8 facing the second spring 81, and the length direction of the sliding rod 9 is perpendicular to the slide plate 3. One end of the sliding rod 9 away from the second clamping block 8 passes through a side wall of the slide plate 3, the sliding rod 9 and the slide plate 3 are slidably connected, and the second spring 81 is sleeved outside the sliding rod 9.

[0051] During the process of the connecting plate 5 moving toward the slide plate 3, the connecting plate 5 first contacts the inclined surface of the second clamping block 8 and pushes the second clamping block 8 to move toward the third moving groove 39, and the second spring 81 is compressed. After the connecting plate 5 moves to the set position, the second clamping block 8 is aligned with the second clamping groove 59, the second spring 81 releases the elastic force and pushes the second clamping block 8 to move, and one end of the second clamping block 8 is clamped into the second clamping groove 59, thereby realizing the fixation between the connecting plate 5 and the slide plate 3. When the fixation between the slide plate 3 and the connecting plate 5 needs to be released, the sliding rod 9 is pulled in the direction away from the connecting plate 5, and the sliding rod 9 drives the second clamping block 8 to move, and the second clamping block 8 and the second clamping groove 59 are disengaged, so that the connecting plate 5 can move relative to the slide plate 3.

[0052] refer to Figure 1 and Figure 2 A support rod 56 is fixedly provided at one end of the connecting plate 5, and the support rod 56 is perpendicular to the connecting plate 5. A cover 57 is fixedly provided at the end of the support rod 56 away from the connecting plate 5, and the cover 57 is perpendicular to the connecting plate 5. A grouting pipe 58 is provided on the cover 57, and the length direction of the grouting pipe 58 is perpendicular to the cover 57. The grouting pipe 58 passes through the cover 57 and is fixedly connected to the cover 57.

[0053] During the movement of the connecting plate 5, the connecting plate 5 drives the support rod 56 to move, and the support rod 56 drives the cover 57 to move. After the connecting plate 5 moves to the set position, the cover 57 completes the sealing of the steel pipe 1. During grouting, the staff injects grout into the steel pipe 1 through the grouting pipe 58. At the same time, the cover 57 prevents the slurry in the steel pipe 1 from easily flowing out from the end of the steel pipe 1 outside the hole.

[0054] The implementation principle of the pipe shed for advance pre-support of soft rock tunnels in the embodiment of the present application is as follows: after the steel pipe 1 is firmly fixed in the hole, the I-beam 21 is moved, and the I-beam 21 pulls the slide plate 3 and the connecting plate 5 to move synchronously. When the I-beam 21 reaches the preset position, the slide plate 3 is further slid, and the slide plate 3 drives the connecting plate 5 to move until the slide plate 3 is aligned with the corresponding position of the steel pipe 1. At this time, through precise adjustment, the slide groove 51 on the connecting plate 5 is aligned with the connecting block 11, and then the connecting plate 5 is pushed to slide in the direction of the connecting block 11. As the connecting block 11 gradually slides into the slide groove 51, the connecting block 11 first contacts the inclined surface of the first clamping block 54, forcing the first clamping block 54 to compress the first spring 55 into the first avoidance groove 52. Once the first block 54 is aligned with the first slot 111, the first spring 55 releases the stored elastic force and pushes one end of the first block 54 to embed into the first slot 111, thereby fixing the connecting plate 5 and the connecting block 11, and further completing the effective connection between the steel pipe 1 and the I-beam 21. There is no need for technicians to manually weld the steel pipe 1 and the steel arch frame 2, which saves time and improves the work efficiency of the pipe rack installation.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe shed for advanced pre-support of a soft surrounding rock tunnel, comprising a steel pipe (1) and a steel arch frame (2), characterized in that: The outer wall of the steel pipe (1) is fixedly provided with a connecting block (11), and a side wall of the connecting block (11) is provided with a first clamping groove (111). A slide plate (3) is slidably connected to the steel arch frame (2), and a fixing component (4) capable of being fixed to the steel arch frame (2) is provided on the slide plate (3). A connecting plate (5) is slidably connected to the side of the slide plate (3) away from the steel arch frame (2), and a sliding groove (51) is provided on the side of the connecting plate (5) away from the slide plate (3). The sliding groove (51) passes through a side wall of the connecting plate (5), and the connecting block (11) and the sliding groove (51) are plug-fitted and matched. The connecting plate (5) is connected to the side of the sliding groove (51). A first avoidance groove (52) is opened in the wall, the first avoidance groove (52) penetrates a side wall of the connecting plate (5), an auxiliary plate (53) is arranged at the first avoidance groove (52), the auxiliary plate (53) and the connecting plate (5) are bolted, a first clamping block (54) is arranged on the side of the auxiliary plate (53) facing the connecting plate (5), the first clamping block (54) is in the first avoidance groove (52), a first spring (55) is fixedly arranged between the first clamping block (54) and the auxiliary plate (53), the first clamping block (54) and the first clamping groove (111) are clamped and adapted, and one side of the first clamping block (54) is arranged as an inclined surface; The two opposite ends of the slide plate (3) away from the steel arch frame (2) are provided with a first moving groove (31) along its own length direction, the first moving groove (31) runs through a side wall of the slide plate (3), the slide plate (3) is provided with a second moving groove (32) on the side wall of the first moving groove (31), the slide plate (3) is slidably connected with a moving block (33) in the second moving groove (32), the slide plate (3) is slidably connected with a moving rod (34) in the first moving groove (31), the moving block (33) is fixedly connected to the moving rod (34) on the side facing the first moving groove (31), and the connecting plate (5) is fixedly connected to the moving rod (34) on the side facing outside the first moving groove (31); The steel arch frame (2) comprises an I-beam (21) and a connecting seat (22), the I-beam (21) is arched, and two I-beams (21) and two connecting seats (22) are provided, the two I-beams (21) are arranged in parallel, the two connecting seats (22) are arranged at the ends of the I-beams (21), the ends of the two I-beams (21) are fixedly connected to the adjacent connecting seats (22), the two ends of the slide plate (3) are respectively overlapped on the two I-beams (21), the slide plate (3) and the I-beams (21) are slidably connected, and two support plates (35) are fixedly provided on the side of the slide plate (3) away from the connecting plate (5), the two support plates (35) are located between the two I-beams (21), and are fixedly connected to the two I-beams (21). The assembly (4) comprises a bidirectional screw rod (41) and a fixed plate (42), wherein the bidirectional screw rod (41) is arranged at the support plate (35), the bidirectional screw rod (41) passes through the two support plates (35) and is rotatably connected to the support plates (35), the end of the bidirectional screw rod (41) extends to the I-beam (21), the two fixed plates (42) are respectively arranged on the sides of the two support plates (35) facing away from each other, the bidirectional screw rod (41) passes through the fixed plate (42) and is threadedly connected to the fixed plate (42), a telescopic rod (351) is fixedly arranged between the fixed plate (42) and the adjacent support plate (35), and a rotating assembly (6) for driving the bidirectional screw rod (41) to rotate is arranged at the slide plate (3); The slide plate (3) is provided with a rotating rod (36), the rotating rod (36) passes through the slide plate (3) and is rotatably connected to the slide plate (3), the rotating assembly (6) comprises a first bevel gear (61) and a second bevel gear (62), the first bevel gear (61) and an end of the rotating rod (36) close to the bidirectional screw rod (41) are fixedly connected, the second bevel gear (62) is fixedly arranged on the bidirectional screw rod (41), the first bevel gear (61) and the second bevel gear (62) are meshed, and a power assembly (7) for providing power for the rotation of the rotating rod (36) is provided at the slide plate (3); The power assembly (7) comprises a gear (71) and a rack (72); the gear (71) is arranged on a side of the slide plate (3) facing the connecting plate (5); the gear (71) is fixedly connected to an end of the rotating rod (36) away from the first bevel gear (61); the rack (72) is fixedly connected to one side of the two moving rods (34); the length direction of the rack (72) is parallel to the length direction of the moving rod (34); and the rack (72) and the gear (71) are meshed and matched.

2. The pipe shed for advanced pre-support of soft surrounding rock tunnel according to claim 1, characterized in that: The side of the fixing plate (42) facing the I-beam (21) and the side of the I-beam (21) facing the fixing plate (42) are both configured as frosted surfaces.

3. The pipe shed for advanced pre-support of soft surrounding rock tunnel according to claim 1, characterized in that: A second avoidance groove (37) is provided on the side of the slide plate (3) away from the support plate (35), and the gear (71) is located in the second avoidance groove (37). A third avoidance groove (38) for avoiding movement of the rack (72) is provided on the side of the slide plate (3) away from the support plate (35), and the second avoidance groove (37) and the third avoidance groove (38) are connected.

4. The pipe shed for advanced pre-support of soft surrounding rock tunnel according to claim 3 is characterized in that: A support rod (56) is fixedly provided at one end of the connecting plate (5), a cover (57) is connected to the support rod (56), and a grouting pipe (58) is connected to the cover (57).

5. The pipe shed for advanced pre-support of soft surrounding rock tunnel according to claim 1, characterized in that: The slide plate (3) is provided with a third movable groove (39) on a side facing away from the support plate (35); the slide plate (3) is slidably connected with a second clamping block (8) in the third movable groove (39); a second spring (81) is fixedly provided between the second clamping block (8) and the inner bottom wall of the third movable groove (39); an end of the second clamping block (8) away from the second spring (81) is arranged as an inclined surface; a second clamping groove (59) is provided on a side of the connecting plate (5) facing the slide plate (3); and the second clamping block (8) and the second clamping groove (59) are clamped and adapted.

6. The pipe shed for advanced pre-support of soft surrounding rock tunnel according to claim 5, characterized in that: A sliding rod (9) is fixedly provided on the side of the second clamping block (8) facing the second spring (81); an end of the sliding rod (9) away from the second clamping block (8) passes through the slide plate (3); the sliding rod (9) and the slide plate (3) are slidably connected; and the second spring (81) is sleeved outside the sliding rod (9).

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