Tunnel surrounding rock supporting structure

Abstract

The utility model provides a tunnel surrounding rock supporting structure which comprises supporting guardrails, the supporting guardrails are spliced into a complete surrounding rock support, a plurality of inserting holes are formed in the surfaces of the supporting guardrails at equal intervals, studs are inserted into the inserting holes, connecting assemblies are arranged on the inner walls, located on the inserting holes, of the supporting guardrails, and the connecting assemblies are connected with the supporting guardrails through bolts. The connecting assembly comprises a mounting plate, a screw cylinder is mounted at the circle center of the mounting plate, one end of the stud is inserted into the screw cylinder in a threaded mode, an inserting rod is arranged at one end of the mounting plate, a connecting plate is fixed to the other end of the mounting plate, a protruding block is fixed to the surface of the outer end of the inserting rod, and a rotating cavity is formed in the connecting plate. The positions of the studs are locked through the connecting assemblies, meanwhile, the adjacent connecting assemblies are connected into a whole, locking connection of the mounting plate and the fixing plate can be completed at the same time, the mounting efficiency is improved, and a frame structure formed after mounting has integrity and assists in reinforcing the strength of a supporting guardrail.

Description

Technical Field

[0001] This utility model relates to the field of surrounding rock support technology, specifically a tunnel surrounding rock support structure. Background Technology

[0002] During tunnel construction, excavating tunnels in intact and hard rock strata puts enormous pressure on the rock mass, which may encounter problems such as rock collapses, landslides, rock strata displacement, and groundwater leakage. Therefore, in order to ensure the safety of the surrounding rock tunnel, it is necessary to install support structures in the tunnel during the tunnel excavation process, and reinforce the tunnel and protect its integrity through anchor bolts, steel frames, concrete, etc.

[0003] Patent CN222184775U proposes a support structure for the surrounding rock of a highway tunnel. A bolt is driven into the inner side of the mountain from the inside of the tunnel. The bolt is then connected and fixed to a connecting rod via a first and second pivot. The connecting rod is then welded and fixed to the inner frame of the outer support. The outer and inner supports are then poured and constructed sequentially. This method effectively utilizes the bolt to connect and fix to the inner foundation of the mountain, thereby effectively using the bolt to generate tension on the outer support, improving the support strength of the outer support for the surrounding rock and soil. The bolt is connected to the inner frame of the outer support via the first and second pivots and the connecting rod, preventing prying of the outer support should the bolt loosen and break, thus ensuring the safety of the outer support.

[0004] The technical drawback of the above-mentioned technical solution is that it requires multiple screws to be inserted into the foundation stone for fixation, which is difficult to implement. Each screw needs to be installed and fixed one by one, which is time-consuming and labor-intensive. Furthermore, the screws do not provide effective assistance for the stability of the support. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a tunnel surrounding rock support structure to solve the problems mentioned in the background art. This utility model has a novel structure, with the connecting components locking the position of the studs and connecting adjacent connecting components into a whole. It can simultaneously complete the locking connection between the mounting plate and the fixing plate, improving installation efficiency. The frame structure formed after installation has integrity and helps to strengthen the support of the guardrail.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel surrounding rock support structure, comprising a support railing, wherein the support railing is spliced ​​to form a complete surrounding rock support, and a plurality of insertion holes are equidistantly provided on the surface of the support railing, wherein studs are inserted into the insertion holes, and a connecting component is provided on the inner wall of the insertion holes of the support railing, wherein the connecting component comprises a mounting plate, wherein a screw cylinder is installed at the center of the mounting plate, and one end of the stud is threaded into the inside of the screw cylinder, wherein a rod is provided at one end of the mounting plate, and a connecting plate is fixed at the other end of the mounting plate, wherein a protrusion is fixed on the outer end surface of the rod, and a rotating cavity is provided inside the connecting plate, wherein the rods of adjacent connecting components are slidably inserted into the connecting plate, and the rods and protrusions pass into the rotating cavity.

[0007] Furthermore, the connecting assembly also includes a fixing plate, and the supporting guardrail is fixed to the inner wall of the insertion hole with the fixing plate. The mounting plate is inserted with first bolts at the four corners corresponding to the fixing plate, and the first bolts are threaded into the fixing plate. The diameter of the fixing plate, the mounting plate and the insertion hole are all larger than the screw barrel and the stud.

[0008] Furthermore, the inner wall of the opening of the mounting plate is provided with an annular groove, the outer wall of the screw barrel is provided with a vertical groove, and a connecting shaft seat is installed between the vertical groove and the annular groove. The screw barrel is rotatably connected to the mounting plate through the connecting shaft seat.

[0009] Furthermore, a gear is fixed to the outer end of the first bolt, a toothed plate frame is slidably mounted on the outer side of the mounting plate, and one end of the insertion rod is rotatably connected to the toothed plate frame via a bearing.

[0010] Furthermore, the support railing has a groove at the top of the insert rod, and a first telescopic plate is slidably installed inside the groove, with the extended end of the first telescopic plate fixedly connected to the insert rod.

[0011] Furthermore, a plug plate is fixed to the top of the first telescopic plate, and a slot is provided on the top of the adjacent support railing on one side of the connecting plate, and the plug plate is slidably inserted into the slot.

[0012] Furthermore, a front fixing plate is fixed to the outer front end of the multiple sets of supporting guardrails, and a second telescopic plate is fixed to the bottom of the front fixing plate. The extended end of the second telescopic plate is located on the back of the connecting plate and a second bolt is inserted therein, and the second bolt is in contact with the inner surface of the connecting plate.

[0013] Furthermore, a rear fixing plate is fixed to the outer rear end of multiple sets of supporting guardrails, and a slider is slidably installed inside the rear fixing plate. The insert rod and protrusion slide through the slider, and a third bolt is threaded into the bottom of the rear fixing plate, and the third bolt is rotatably connected to the bottom of the slider.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, when the spliced ​​support railing is connected to the mounting plate, the first telescopic plate will also move, inserting the mounting plate into the slot of another set, thereby improving the stability of the splicing and installation of the two sets of support railings.

[0016] 2. This utility model involves inserting a rod into a connecting plate, then rotating the rod to misalign the position of the protrusion with the insertion end of the connecting plate along the inside of the rotating cavity, forming a snap-fit ​​structure. A front fixing plate is installed on the outermost end of the outermost support railing, and a rear fixing plate is installed on the outermost end of the rearmost support railing. Since each support railing's inner wall has a connecting plate and a rod, one connecting plate and one rod remain at each end. The second bolt of the front fixing plate presses against the back of the connecting plate, and the rod passes through the slider of the rear fixing plate. The height is then uniformly adjusted using a third bolt, and the rod is pulled outwards. Because the rod and connecting plate of each connecting component are snapped together, the toothed plate frame on the same straight line moves simultaneously. Gear meshing causes the first bolt to insert into the fixing plate, and the mounting plate rises. The position is adjusted and locked using the third bolt, forming an internal connection and enhancing the stability of the support.

[0017] 3. This utility model, through the annular groove, vertical groove and connecting shaft seat, allows the screw barrel and stud to rotate at any angle, thereby adjusting the position of the stud as needed and improving the stability after installation.

[0018] 4. Compared with the prior art, this utility model locks the position of the connecting component and connects adjacent connecting components into a whole, which can simultaneously complete the locking connection between the mounting plate and the fixing plate, improve installation efficiency, and the frame structure formed after installation has integrity, which helps to strengthen the strength of the guardrail. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a tunnel surrounding rock support structure according to the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection between the connecting components and the supporting guardrail of a tunnel surrounding rock support structure according to this utility model;

[0021] Figure 3 This is a schematic diagram of the connection component structure of a tunnel surrounding rock support structure according to the present invention;

[0022] Figure 4 This is a schematic diagram showing the connection between the connecting component and the front fixing plate of a tunnel surrounding rock support structure according to this utility model;

[0023] Figure 5 This is a schematic diagram of the connection of two sets of connecting components in a tunnel surrounding rock support structure according to the present invention;

[0024] Figure 6 This is a schematic diagram of the insertion of a rod and a connecting plate in a tunnel surrounding rock support structure according to the present invention;

[0025] Figure 7 This is a schematic diagram showing the connection between the connecting component and the rear fixing plate of a tunnel surrounding rock support structure according to this utility model.

[0026] In the diagram: 1. Support railing; 11. Insertion hole; 12. Stud; 2. Connecting assembly; 21. Screw barrel; 22. Fixing plate; 23. Mounting plate; 24. First bolt; 25. Gear; 26. Gear plate frame; 27. Slide groove; 28. Insert plate; 29. ​​First telescopic plate; 210. Connecting plate; 211. Insert rod; 212. Protrusion; 213. Annular groove; 214. Vertical groove; 215. Connecting shaft seat; 216. Slot; 217. Rotating cavity; 3. Front fixing plate; 31. Second telescopic plate; 32. Second bolt; 33. Rear fixing plate; 34. Slider; 35. Third bolt. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Please see Figures 1 to 7 This utility model provides a technical solution: a tunnel surrounding rock support structure, including a support railing 1, which is spliced ​​to form a complete surrounding rock support. Multiple insertion holes 11 are equidistantly opened on the surface of the support railing 1, and studs 12 are inserted into the insertion holes 11. A connecting component 2 is provided on the inner wall of the support railing 1 at the insertion holes 11. The connecting component 2 includes a mounting plate 23, a screw cylinder 21 is installed at the center of the mounting plate 23, and one end of the stud 12 is threaded into the screw cylinder 21. A rod 211 is provided at one end of the mounting plate 23. The other end of the 3 is fixed with a connecting plate 210. A protrusion 212 is fixed on the outer surface of the insertion rod 211. A rotating cavity 217 is opened inside the connecting plate 210. The insertion rod 211 of the adjacent connecting component 2 is slidably inserted into the connecting plate 210. The insertion rod 211 and the protrusion 212 are inserted into the rotating cavity 217. When using the device, multiple sets of support railings 1 are spliced ​​together. The studs 12 are inserted into the tunnel foundation through the insertion hole 11, and the studs 12 on a straight line are connected by the connecting component 2 and locked at the same time, thereby strengthening the stability of the support railing 1 from the inside.

[0029] In this embodiment, the connecting assembly 2 further includes a fixing plate 22. The supporting guardrail 1 is fixed to the inner wall of the insertion hole 11 with the fixing plate 22. The mounting plate 23 is inserted with first bolts 24 at the four corners of the fixing plate 22, and the first bolts 24 are threaded into the fixing plate 22. The diameters of the fixing plate 22, the mounting plate 23, and the insertion hole 11 are all larger than those of the screw barrel 21 and the stud 12. The inner wall of the opening of the mounting plate 23 is provided with an annular groove 213. The outer wall of the screw barrel 21 is provided with a vertical groove 214, and a connecting shaft seat 215 is installed between the vertical groove 214 and the annular groove 213. The screw barrel 21 is rotatably connected to the mounting plate 23 through the connecting shaft seat 215. One end of the screw is engaged with the stud 12. Through the annular groove 213, the vertical groove 214, and the connecting shaft seat 215, the screw barrel 21 and the stud 12 can rotate at any angle, thereby adjusting the position of the stud 12 as needed and improving the stability after installation.

[0030] In this embodiment, a gear 25 is fixed to the outer end of the first bolt 24, a toothed plate frame 26 is slidably mounted on the outer side of the mounting plate 23, one end of the insert rod 211 is rotatably connected to the toothed plate frame 26 via a bearing, a front fixing plate 3 is fixed to the outer front end of the multiple sets of support railings 1, and a second telescopic plate 31 is fixed to the bottom of the front fixing plate 3. A second bolt 32 is inserted into the extended end of the second telescopic plate 31 on the back of the connecting plate 210, and the second bolt 32 is in contact with the inner surface of the connecting plate 210. A rear fixing plate 33 is fixed to the outer rear end of the multiple sets of support railings 1, and a slider 34 is slidably mounted inside the rear fixing plate 33. The insert rod 211 and the protrusion 212 slide through the slider 34. A third bolt 35 is threaded into the bottom of the rear fixing plate 33, and the third bolt 35 is rotatably connected to the bottom of the slider 34. After the multiple sets of support railings 1 are assembled, the insert rod 211 is inserted into the connecting plate 210, and then the insert rod 211 is rotated along the inside of the rotating cavity 217. The position of the protrusion 212 is misaligned with the insertion end of the connecting plate 210 to form a snap-fit ​​structure. The outermost support rail 1 is fitted with the front fixing plate 3, and the outermost support rail 1 is fitted with the rear fixing plate 33. Since each support rail 1 has a connecting component 2 with a connecting plate 210 and a plug rod 211 on its inner wall, there is one connecting plate 210 and one plug rod 211 remaining at each end. The second bolt 32 of the front fixing plate 3 is pressed against the back of the connecting plate 210, and the plug rod 211 passes through the slider 34 of the rear fixing plate 33. The height is then adjusted uniformly by the third bolt 35, and the plug rod 211 is pulled outward. Since the plug rod 211 of each connecting component 2 is snapped with the connecting plate 210, it will simultaneously drive the toothed plate frame 26 on the same straight line to move. The gear 25 meshes, driving the first bolt 24 to insert into the fixing plate 22. At the same time, the mounting plate 23 rises. After the position is adjusted by the third bolt 35 and locked, an internal connection is formed to enhance the stability of the support.

[0031] In this embodiment, the support railing 1 has a groove 27 at the top of the insert rod 211, and a first telescopic plate 29 is slidably installed inside the groove 27. The extended end of the first telescopic plate 29 is fixedly connected to the insert rod 211, and an insert plate 28 is fixedly installed at the top of the first telescopic plate 29. The adjacent support railing 1 has a slot 216 at the top on the side of the connecting plate 210, and the insert plate 28 is slidably inserted into the slot 216. When the insert rod 211 is connected to the mounting plate 23, the first telescopic plate 29 will also move, inserting the insert plate 28 into the slot 216 of another set, thereby improving the stability of the splicing installation of the two sets of support railings 1.

[0032] When using the device, multiple sets of support railings 1 are spliced ​​together. Studs 12 are inserted into the tunnel foundation through the insertion holes 11. One end of the screw engages with the stud 12. Through the annular groove 213, vertical groove 214, and connecting shaft seat 215, the screw barrel 21 and stud 12 can rotate at any angle, allowing adjustment of the stud 12's position as needed to improve post-installation stability. The insertion rod 211 is then inserted into the connecting plate 210. Rotating the insertion rod 211 along the inside of the rotating cavity 217 causes the protrusion 212 to be misaligned with the insertion end of the connecting plate 210, forming a snap-fit ​​structure. The outermost support railing 1 has a front fixing plate 3 installed at its outer end, and the rearmost support railing 1 has a rear fixing plate 33 installed at its outer end. Since each support railing 1's inner wall connecting assembly 2 has a connecting plate 210 and an insertion rod 211, one connecting plate 2 remains at each end. A rod 211 is inserted into the back of the connecting plate 210 by the second bolt 32 of the front fixing plate 3. The rod 211 passes through the slider 34 of the rear fixing plate 33 and is then adjusted in height by the third bolt 35. The rod 211 is pulled outward. Because the rod 211 of each connecting component 2 is engaged with the connecting plate 210, the toothed plate frame 26 on the same straight line will move simultaneously. The gear 25 meshes and drives the first bolt 24 to be inserted into the fixing plate 22. At the same time, the mounting plate 23 rises. After the position is adjusted by the third bolt 35 and locked, an internal connection is formed to enhance the stability of the support. When the rod 211 is connected to the mounting plate 23, the first telescopic plate 29 of the spliced ​​support railing 1 will also move, inserting the rod 28 into the slot 216 of another set, improving the stability of the spliced ​​installation of the two sets of support railings 1.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tunnel surrounding rock support structure comprising a support fence (1), characterized in that: The supporting guardrail (1) is assembled into a complete surrounding rock support. Multiple insertion holes (11) are equally spaced on the surface of the supporting guardrail (1). Studs (12) are inserted into the insertion holes (11). A connecting component (2) is provided on the inner wall of the insertion holes (11) of the supporting guardrail (1). The connecting component (2) includes a mounting plate (23). A screw cylinder (21) is installed at the center of the mounting plate (23), and one end of the stud (12) is threaded into the screw cylinder (21). Inside, one end of the mounting plate (23) is provided with a plug rod (211), and the other end of the mounting plate (23) is fixed with a connecting plate (210). A protrusion (212) is fixed on the outer end surface of the plug rod (211). A rotating cavity (217) is opened inside the connecting plate (210). The plug rod (211) of the adjacent connecting component (2) is slidably inserted into the connecting plate (210). The plug rod (211) and the protrusion (212) pass into the rotating cavity (217).

2. A tunnel surrounding rock support structure according to claim 1, characterized in that: The connecting assembly (2) also includes a fixing plate (22). The supporting guardrail (1) is fixed to the inner wall of the insertion hole (11) with the fixing plate (22). The mounting plate (23) is connected to the four corners of the fixing plate (22) with first bolts (24) inserted into it. The first bolts (24) are threaded into the fixing plate (22). The diameters of the fixing plate (22), the mounting plate (23) and the insertion hole (11) are all larger than those of the screw barrel (21) and the stud (12).

3. A tunnel surrounding rock support structure according to claim 2, characterised in that: The inner wall of the opening of the mounting plate (23) is provided with an annular groove (213), and the outer wall of the screw barrel (21) is provided with a vertical groove (214). A connecting shaft seat (215) is installed between the vertical groove (214) and the annular groove (213). The screw barrel (21) is rotatably connected to the mounting plate (23) through the connecting shaft seat (215).

4. A tunnel surrounding rock support structure according to claim 3, characterised in that: The outer end of the first bolt (24) is fixed with a gear (25), and a toothed plate frame (26) is slidably installed on the outer side of the mounting plate (23). One end of the insertion rod (211) is rotatably connected to the toothed plate frame (26) through a bearing.

5. A tunnel surrounding rock support structure according to claim 4, characterised in that: The support railing (1) has a groove (27) at the top of the insert rod (211), and a first telescopic plate (29) is slidably installed inside the groove (27). The extended end of the first telescopic plate (29) is fixedly connected to the insert rod (211).

6. A tunnel surrounding rock support structure according to claim 5, characterised in that: The top of the first telescopic plate (29) is fixed with a plug plate (28), and the top of the adjacent support railing (1) located on the side of the connecting plate (210) is provided with a slot (216), and the plug plate (28) is slidably inserted into the slot (216).

7. A tunnel surrounding rock support structure according to claim 6, characterised in that: A front fixing plate (3) is fixed to the outer front end of the multiple sets of support guardrails (1), and a second telescopic plate (31) is fixed to the bottom of the front fixing plate (3). The extended end of the second telescopic plate (31) is located on the back of the connecting plate (210) and a second bolt (32) is inserted therein. The second bolt (32) is in contact with the inner surface of the connecting plate (210).

8. A tunnel surrounding rock support structure according to claim 7, characterised in that: A rear fixing plate (33) is fixed to the outer rear end of the multiple sets of supporting guardrails (1), and a slider (34) is slidably installed inside the rear fixing plate (33). The insert rod (211) and the protrusion (212) slide through the slider (34). A third bolt (35) is threaded into the bottom of the rear fixing plate (33), and the third bolt (35) is rotatably connected to the bottom of the slider (34).

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