Non-explosive excavation steel formwork pressure injection type concrete supporting structure

Abstract

The utility model relates to the technical field of tunneling supporting, and discloses a non-explosive excavation steel formwork pressure injection type concrete supporting structure which comprises a shield tail, a pressure injection ring is installed on the right side of the shield tail, pressure injection pipelines are installed in the shield tail at equal intervals, a concrete plate is installed on the right side of the pressure injection ring, and a supporting assembly is installed in the concrete plate. By arranging the supporting assembly, when surrounding rock is supported, two connecting plates abut against the surface of a U-shaped plate, then two limiting cylinders are installed in an arc-shaped groove, a rotating rod is rotated so that the two connecting plates can be connected with the U-shaped plate, then an arc-shaped top plate abuts against the tops of the two connecting plates, and the supporting assembly can be used for supporting the surrounding rock. And finally, the two limiting cylinders are inserted into the arc-shaped grooves between the arc-shaped top plates and the connecting plates, so that the arc-shaped top plates are connected with the connecting plates, the connecting plates, the arc-shaped top plates and the U-shaped plates are assembled and disassembled by rotating the rotating rods and then pulling out the two connecting plates, and therefore disassembly of the connecting plates, the arc-shaped top plates and the U-shaped plates can be completed very conveniently and rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of tunneling support, in particular to a non-explosive excavation steel formwork grouting type concrete support structure. Background Technique

[0002] The basic function of the support structure is to form a relatively safe tunnel structure system with the surrounding rock, bear various loads; maintain the usable clearance of the tunnel section; prevent the deterioration of the quality of the surrounding rock, provide a smooth surface. The basic requirements for the support structure are: it must be able to firmly contact the surrounding rock over a large area to ensure that the support structure and the surrounding rock work as a whole; it should allow the tunnel structure system to produce limited deformation, give full play to the bearing capacity of the surrounding rock, reduce the role of the support structure, and make the two work more coordinately; it should be able to be constructed in stages and make the early support and the later support cooperate with each other to "actively" control the deformation of the surrounding rock.

[0003] In the prior art, concrete is used to support the surrounding rock. In this process, the spliced steel formwork needs to be set up first, and then the concrete is introduced through the grouting pipeline. In cooperation with the steel formwork, after the concrete is stabilized, a stable support is formed for the surrounding rock. After the concrete is stabilized, the steel formwork is removed and transported to the front for the next step of supporting the introduction of concrete.

[0004] However, in the prior art, it is found that during the use of the steel formwork, it needs to be assembled first, and after the concrete is stabilized, the splicing of the steel formwork needs to be removed. However, the process of assembling and disassembling the steel formwork is generally cumbersome. Therefore, the utility model provides a non-explosive excavation steel formwork grouting type concrete support structure. Content of the Utility Model

[0005] To solve the above-mentioned technical problems, the utility model provides a non-explosive excavation steel formwork grouting type concrete support structure.

[0006] The utility model is realized by the following technical solutions: a non-explosive excavation steel formwork grouting type concrete support structure, including a shield tail, a grouting ring is installed on the right side of the shield tail, grouting pipelines are installed at equal intervals inside the shield tail, a concrete slab is installed on the right side of the grouting ring, and a support component is installed inside the concrete slab.

[0007] The support component includes an arc-shaped top plate, two connecting plates are abutted against the bottom of the arc-shaped top plate, a U-shaped plate is abutted against the bottom of the connecting plates, and the top plate and the bottom plate of the connecting plates are respectively connected to the bottom of the arc-shaped top plate and the U-shaped plate through limiting components.

[0008] The limiting component includes a limiting cylinder, a rotating rod is installed inside the limiting cylinder, a cam is sleeved on the outer side of the rotating rod, one end of the rotating rod is rotatably connected to the inner wall of the limiting cylinder, and two abutting rods are abutted against the surface of the cam.

[0009] As a further improvement of the above solution, first waterproof plates are fixedly connected to both sides of the top of the U-shaped plate. First grooves adapted to the first waterproof plates are formed at the bottom of the connecting plate. A second waterproof plate is fixedly connected to the top of the connecting plate. Second grooves adapted to the second waterproof plates are formed at both sides of the bottom of the arc-shaped top plate, preventing the water in the concrete from flowing into the interior of the device.

[0010] As a further improvement of the above solution, a handle is fixedly connected to one side of the connecting plate, facilitating the pulling out of the connecting plate.

[0011] As a further improvement of the above solution, arc-shaped grooves adapted to the limiting cylinders are formed on the surfaces of the arc-shaped top plate, the connecting plate and the U-shaped plate. Limiting grooves adapted to the abutting rods are formed on one side of the arc-shaped grooves, facilitating the position limitation of the abutting rods.

[0012] As a further improvement of the above solution, a sliding plate is slidably connected to the outer side of the rotating rod. Two inserting rods are fixedly connected to one side of the connecting plate. Limiting holes are equidistantly formed on the surface of the limiting cylinder, facilitating the angle fixation of the rotating rod.

[0013] As a further improvement of the above solution, the abutting rod is connected to the inner wall of the limiting cylinder through a return spring sleeved on the outer side of the abutting rod, facilitating the reset of the abutting rod.

[0014] As a further improvement of the above solution, the right side of the grouting pipeline is communicated with the grouting ring. Discharge ports for discharging the grouting pipeline are equidistantly formed at the right end of the grouting ring, facilitating the introduction of concrete.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By arranging the support assembly, when supporting the surrounding rock, first abut the two connecting plates against the surface of the U-shaped plate, then install the two limiting cylinders in the arc-shaped grooves, rotate the rotating rod to connect the two connecting plates with the U-shaped plate, then abut the arc-shaped top plate against the tops of the two connecting plates, and finally insert the two limiting cylinders into the arc-shaped grooves between the arc-shaped top plate and the connecting plate to connect the arc-shaped top plate with the connecting plate, thus completing the assembly of the connecting plate, the arc-shaped top plate and the U-shaped plate. When disassembling, rotate the rotating rod and then pull out the two connecting plates to complete the disassembly of the three, which is very convenient and fast.

[0017] 2. The utility model realizes the fixed connection between the connecting plate, the arc-shaped top plate and the U-shaped plate by setting a limiting component. When the limiting cylinder is installed, the rotating rod is rotated, so that the cam rotates, and then the cam abuts against the two abutting rods on both sides, so that the abutting rods are inserted into the limiting grooves in the arc-shaped grooves, thereby realizing the fixed connection between the connecting plate, the arc-shaped top plate and the U-shaped plate. When it is necessary to disassemble the connecting plate, the arc-shaped top plate and the U-shaped plate, the rotating rod is rotated in the reverse direction, so that the cam of the rotating rod disengages from the abutting rod. Under the action of the return spring, the abutting rod returns to its initial position, and then the limiting cylinder is removed, and the connection between the connecting plate, the arc-shaped top plate and the U-shaped plate can be released, which is convenient for the installation and disassembly of the connecting plate, the arc-shaped top plate and the U-shaped plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a schematic diagram of the structures of the arc-shaped top plate, the connecting plate and the U-shaped plate of the utility model;

[0020] Figure 3 is a schematic diagram of the structures of the rotating rod, the rotating rod and the cam of the utility model.

[0021] MAIN SYMBOL DESCRIPTION:

[0022] 1. Tail shield; 2. Grouting ring; 3. Grouting pipeline; 4. Concrete slab; 5. Arc-shaped top plate; 6. Connecting plate; 7. U-shaped plate; 8. Limiting cylinder; 9. Abutting rod; 10. Rotating rod; 11. Cam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, in combination with the drawings and the specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0024] Embodiment:

[0025] Please refer to Figures 1-3 , a non-explosive excavation steel formwork grouting type concrete support structure of this embodiment includes a tail shield 1, a grouting ring 2 is installed on the right side of the tail shield 1, grouting pipelines 3 are installed at equal intervals inside the tail shield 1, the right side of the grouting pipeline 3 is communicated with the grouting ring 2, and discharge ports for discharging the grouting pipelines 3 are opened at equal intervals at the right end of the grouting ring 2, which is convenient for introducing concrete. A concrete slab 4 is installed on the right side of the grouting ring 2, and a support assembly is installed inside the concrete slab 4.

[0026] The supporting component is used to support the concrete slab 4. The supporting component includes an arc-shaped top plate 5. Two connecting plates 6 are abutted against the bottom of the arc-shaped top plate 5. A handle is fixedly connected to one side of the connecting plate 6, which is convenient for pulling out the connecting plate 6. The bottom of the connecting plate 6 is abutted against a U-shaped plate 7. The top and bottom plates of the connecting plate 6 are respectively connected to the bottom of the arc-shaped top plate 5 and the U-shaped plate 7 through a limiting component. First waterproof plates are fixedly connected to both sides of the top of the U-shaped plate 7. First grooves adapted to the first waterproof plates are formed at the bottom of the connecting plate 6. A second waterproof plate is fixedly connected to the top of the connecting plate 6. Second grooves adapted to the second waterproof plates are formed at both sides of the bottom of the arc-shaped top plate 5, preventing the water in the concrete from flowing into the interior of the device.

[0027] The limiting component is used to connect the connecting plate 6 with the arc-shaped top plate 5 and the U-shaped plate 7. The limiting component includes a limiting cylinder 8. A rotating rod 10 is installed inside the limiting cylinder 8. A sliding plate is slidably connected to the outer side of the rotating rod 10. Two insertion rods are fixedly connected to one side of the connecting plate. Limiting holes are equidistantly formed on the surface of the limiting cylinder, facilitating the angle fixation of the rotating rod 10. A cam 11 is sleeved on the outer side of the rotating rod 10. One end of the rotating rod 10 is rotatably connected to the inner wall of the limiting cylinder 8. Two abutting rods 9 are abutted against the surface of the cam 11. Arc-shaped grooves adapted to the limiting cylinder 8 are formed on the surfaces of the arc-shaped top plate 5, the connecting plate 6 and the U-shaped plate 7. Limiting grooves adapted to the abutting rods 9 are formed on one side of the arc-shaped grooves, facilitating the position limitation of the abutting rods 9. The abutting rods 9 are connected to the inner wall of the limiting cylinder 8 through a return spring sleeved on the outer side of the abutting rods 9, facilitating the reset of the abutting rods 9.

[0028] The implementation principle of a non-explosive excavation steel formwork grouting type concrete support structure in the embodiment of the present application is as follows: When supporting the surrounding rock, first abut the two connecting plates 6 against the surface of the U-shaped plate 7, then install the two limiting cylinders 8 in the arc-shaped grooves, rotate the rotating rod 10 to connect the two connecting plates 6 with the U-shaped plate 7, then abut the arc-shaped top plate 5 against the tops of the two connecting plates 6, and finally insert the two limiting cylinders 8 into the arc-shaped grooves between the arc-shaped top plate 5 and the connecting plate 6 to connect the arc-shaped top plate 5 with the connecting plate 6, thus completing the assembly of the connecting plate 6, the arc-shaped top plate 5 and the U-shaped plate 7. When disassembling, rotate the rotating rod 10 and then pull out the two connecting plates 6 to complete the disassembly of the three, which is very convenient and fast.

[0029] When the limit cylinder 8 is installed, rotate the rotating rod 10 to make the cam 11 rotate, so that the cam 11 abuts against the abutting rods 9 on both sides, and the abutting rods 9 are inserted into the limit grooves in the arc-shaped grooves, thereby realizing the fixed connection between the connecting plate 6, the arc-shaped top plate 5 and the U-shaped plate 7. When it is necessary to disassemble the connecting plate 6, the arc-shaped top plate 5 and the U-shaped plate 7, rotate the rotating rod 10 in the reverse direction to make the cam 11 disengage from the abutting rod 9. Under the action of the return spring, the abutting rod 9 returns to its initial position, and then the limit cylinder 8 is removed to release the connection between the connecting plate 6, the arc-shaped top plate 5 and the U-shaped plate 7, which is convenient for the installation and disassembly of the connecting plate 6, the arc-shaped top plate 5 and the U-shaped plate 7.

[0030] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A non-explosive excavation steel formwork cast-in-place concrete support structure, characterized in that: It comprises a shield tail (1), a pressure injection ring (2) is installed on the right side of the shield tail (1), pressure injection pipelines (3) are installed at equal intervals inside the shield tail (1), a concrete plate (4) is installed on the right side of the pressure injection ring (2), and a support assembly is installed inside the concrete plate (4); The support assembly comprises an arc-shaped top plate (5), the bottom of the arc-shaped top plate (5) is abutted against two connecting plates (6), the bottom of the connecting plate (6) is abutted against a U-shaped plate (7), and the top plate and the bottom of the connecting plate (6) are respectively connected to the arc-shaped top plate (5) and the bottom of the U-shaped plate (7) through a limiting assembly; The limiting assembly comprises a limiting cylinder (8), a rotating rod (10) is installed inside the limiting cylinder (8), a cam (11) is sleeved on the outer side of the rotating rod (10), one end of the rotating rod (10) is rotatably connected to the inner wall of the limiting cylinder (8), and the surface of the cam (11) is abutted against two abutting rods (9).

2. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: The top of the U-shaped plate (7) is fixedly connected to a first waterproof plate on both sides, the bottom of the connecting plate (6) is provided with a first groove matched with the first waterproof plate, the top of the connecting plate (6) is fixedly connected to a second waterproof plate, and the bottom of the arc-shaped top plate (5) is provided with a second groove matched with the second waterproof plate on both sides.

3. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: A handle is fixedly connected to one side of the connecting plate (6).

4. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: The surfaces of the arc-shaped top plate (5), the connecting plate (6) and the U-shaped plate (7) are all provided with an arc-shaped groove matched with the limiting cylinder (8), and one side of the arc-shaped groove is provided with a limiting groove matched with the abutting rod (9).

5. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: The outer side of the rotating rod (10) is slidably connected to a sliding plate, one side of the connecting plate is fixedly connected to two insertion rods, and the surface of the limiting cylinder is provided with limiting holes at equal intervals.

6. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: The abutment rod (9) is connected to the inner wall of the limiting cylinder (8) via a return spring sleeved on the outside of the abutment rod (9).

7. The non-explosive excavation steel formwork cast-in-place concrete support structure according to claim 1, characterized in that: The right side of the injection pipeline (3) is connected to the injection ring (2), and the right end of the injection ring (2) is provided with discharge ports for discharging materials from the injection pipeline (3) at equal intervals.

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