Tunnel two-lining plain concrete three-limb grid arch frame fixing device

Abstract

The utility model relates to the technical field of grating arch frame installation, and discloses a tunnel two-lining plain concrete three-limb grating arch frame fixing device which comprises a first grating arch frame, a second grating arch frame is arranged at the right end of the first grating arch frame, a first installation plate is fixedly connected to the right end of the first grating arch frame, and a second installation plate is fixedly connected to the right end of the second grating arch frame. And the two ends of the second grid arch frame are fixedly connected with second mounting plates. The U-shaped mounting plate is clamped on the surface of the first mounting plate and the surface of the second mounting plate, the fastening bolt penetrates through the first mounting plate and the second mounting plate, the first mounting plate and the second mounting plate are preliminarily limited, and then the fastening bolt is rotated to be connected with the nut. The first grid arch frame and the second grid arch frame are spliced and fixed through the two U-shaped mounting plates, operation is convenient and fast, the mounting efficiency is improved, the construction efficiency is improved, follow-up component replacement is facilitated, and the stability during connection is improved through the two U-shaped mounting plates, and the stability during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grille arch installation, in particular to a tunnel double-lined plain concrete three-limb grille arch fixing device. Background Art

[0002] The limb grid arch is a structural form commonly used in the initial support of highway, railway tunnel and mine tunnel construction. It is usually composed of main steel bars, eight-shaped bars, turn bars, U-shaped bars, angle steel connecting plates, etc. This arch is characterized by good flexibility and adaptability, and can be customized and adjusted according to different geological conditions and construction requirements.

[0003] At present, after tunnel excavation, the cavern is supported by grid arch frames, and most of the grid arch frames are welded together. However, the manual welding method is not only cumbersome to operate but also time-consuming and labor-intensive, which reduces the efficiency of construction and prolongs the construction period. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tunnel secondary lining plain concrete three-legged grid arch fixing device.

[0005] The utility model is implemented by the following technical scheme: a tunnel double-lining plain concrete three-limb grid arch fixing device, comprising a first grid arch, a second grid arch is arranged at the right end of the first grid arch, a first mounting plate is fixedly connected to the right end of the first grid arch, second mounting plates are fixedly connected to the two ends of the second grid arch, U-shaped mounting plates are arranged on the surfaces of the first mounting plate and the second mounting plate, a fastening bolt is threadedly connected to the inner wall of the U-shaped mounting plate, and a nut is threadedly connected to the surface of the fastening bolt.

[0006] Through the above technical solution, the U-shaped mounting plate is clamped on the surfaces of the first mounting plate and the second mounting plate, and then the fastening bolts are rotated to penetrate the first mounting plate and the second mounting plate and connect with the nuts, so that the first grid arch frame and the second grid arch frame are installed and fixed, and the operation is more convenient and quick, thereby improving the construction efficiency.

[0007] As a further improvement of the above solution, the inner walls of the first mounting plate and the second mounting plate are both provided with through holes, and the fastening bolts pass through the first mounting plate and the second mounting plate through the through holes.

[0008] As a further improvement of the above solution, the nut is located at the lower end of the U-shaped mounting plate, and the inner wall of the U-shaped mounting plate contacts the surfaces of the first mounting plate and the second mounting plate.

[0009] Through the above technical solution, the U-shaped mounting plate limits the first mounting plate and the second mounting plate, thereby enhancing the strength of the structure.

[0010] As a further improvement of the above solution, the number of the U-shaped mounting plates is two, and the two U-shaped mounting plates are symmetrically distributed around the first mounting plate.

[0011] Through the above technical solution, the two U-shaped mounting plates are used to improve the stability of the fixing of the first mounting plate and the second mounting plate, thereby improving the stability of the connection.

[0012] As a further improvement of the above solution, a U-shaped mounting frame is provided on the surfaces of the first mounting plate and the second mounting plate, and the inner wall of the U-shaped mounting frame contacts the surfaces of the first mounting plate and the second mounting plate.

[0013] Through the above technical solution, the U-shaped mounting frame makes the connection between the first mounting plate and the second mounting plate more stable, thereby improving the stability during use.

[0014] As a further improvement of the above solution, a threaded rod is threadedly connected to the inner wall of the right end of the U-shaped mounting frame, and the number of the threaded rods is two, and the two threaded rods are symmetrically distributed with the U-shaped mounting frame as the center.

[0015] Through the above technical solution, the U-shaped mounting frame is fixed by connecting the threaded rod to the inner wall of the U-shaped mounting frame to prevent the U-shaped mounting frame from moving.

[0016] As a further improvement of the above solution, one end of the first grid arch away from the first mounting plate is fixedly connected to a fixing seat, and an inner wall of the fixing seat is provided with a mounting hole.

[0017] Through the above technical solution, the first grid arch frame is installed and fixed by connecting it to the ground through the fixing seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model provides a first mounting plate, a second mounting plate, a U-shaped mounting plate and a fastening bolt. Specifically, during installation, the U-shaped mounting plate is clamped on the surfaces of the first mounting plate and the second mounting plate, and then the fastening bolt penetrates the first mounting plate and the second mounting plate to perform preliminary position limiting on the first mounting plate and the second mounting plate, and then the fastening bolt is rotated to connect with the nut, thereby splicing and fixing the first grille arch frame and the second grille arch frame, and the operation is convenient and fast, thereby improving the installation efficiency, and then improving the construction efficiency, and facilitating the subsequent replacement of parts, and the two U-shaped mounting plates are used to improve the stability during connection and the stability during use.

[0020] The utility model provides a U-shaped mounting frame and a threaded rod, specifically, the U-shaped mounting frame is clamped on the surfaces of the first mounting plate and the second mounting plate, and the U-shaped mounting frame is fixed to the surfaces of the first mounting plate and the second mounting plate through the threaded rod at the right end of the U-shaped mounting frame, thereby further improving the stability of the connection between the first mounting plate and the second mounting plate and enhancing the strength of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall side view structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the overall explosion structure of the utility model;

[0024] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0025] Figure 5 It is a schematic diagram of the overall side structure of the utility model.

[0026] Description of main symbols:

[0027] 1. First grille arch; 2. Second grille arch; 3. First mounting plate; 4. Second mounting plate; 5. U-shaped mounting plate; 6. Fastening bolts; 7. Nuts; 8. U-shaped mounting frame; 9. Threaded rod; 10. Fixed seat; 11. Mounting hole. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] Example:

[0030] Please combine Figure 1-5, a tunnel two-lined plain concrete three-limb grid arch fixing device of the present embodiment comprises a first grid arch 1, a second grid arch 2 is arranged at the right end of the first grid arch 1, a first mounting plate 3 is fixedly connected to the right end of the first grid arch 1, and second mounting plates 4 are fixedly connected to both ends of the second grid arch 2, and U-shaped mounting plates 5 are arranged on the surfaces of the first mounting plate 3 and the second mounting plate 4, and the inner wall of the U-shaped mounting plate 5 is threadedly connected with a fastening bolt 6, and the surface of the fastening bolt 6 is threadedly connected with a nut 7. During installation, the U-shaped mounting plate 5 is clamped on the surface of the first mounting plate 3 and the second mounting plate 4, and then the fastening bolt 6 penetrates the first mounting plate 3 and the second mounting plate 4 to perform preliminary position limiting on the first mounting plate 3 and the second mounting plate 4, and then the fastening bolt 6 is rotated to connect with the nut 7, so that the first grid arch 1 and the second grid arch 2 are spliced ​​and fixed, and the operation is convenient and quick, thereby improving the efficiency of installation, and then improving the construction efficiency, facilitating the subsequent replacement of components, and improving the stability during connection through the two U-shaped mounting plates 5, and improving the stability during use.

[0031] The inner walls of the first mounting plate 3 and the second mounting plate 4 are both provided with through holes, and the fastening bolts 6 pass through the first mounting plate 3 and the second mounting plate 4 through the through holes.

[0032] The nut 7 is located at the lower end of the U-shaped mounting plate 5 , and the inner wall of the U-shaped mounting plate 5 is in contact with the surfaces of the first mounting plate 3 and the second mounting plate 4 .

[0033] There are two U-shaped mounting plates 5 , and the two U-shaped mounting plates 5 are symmetrically distributed around the first mounting plate 3 .

[0034] A U-shaped mounting frame 8 is disposed on the surfaces of the first mounting plate 3 and the second mounting plate 4 , and the inner wall of the U-shaped mounting frame 8 contacts the surfaces of the first mounting plate 3 and the second mounting plate 4 .

[0035] A threaded rod 9 is threadedly connected to the inner wall of the right end of the U-shaped mounting frame 8. There are two threaded rods 9, which are symmetrically distributed around the U-shaped mounting frame 8. The U-shaped mounting frame 8 is clamped on the surfaces of the first mounting plate 3 and the second mounting plate 4. The U-shaped mounting frame 8 is fixed to the surfaces of the first mounting plate 3 and the second mounting plate 4 through the threaded rod 9 at the right end of the U-shaped mounting frame 8, which further improves the stability of the connection between the first mounting plate 3 and the second mounting plate 4 and enhances the strength of the overall structure.

[0036] One end of the first grid arch 1 away from the first mounting plate 3 is fixedly connected to a fixing seat 10 , and an inner wall of the fixing seat 10 is provided with a mounting hole 11 .

[0037] The implementation principle of a tunnel double-lining plain concrete three-legged grid arch fixing device in the embodiment of the present application is as follows: during installation, the U-shaped mounting plate 5 is clamped on the surface of the first mounting plate 3 and the second mounting plate 4, and then the first mounting plate 3 and the second mounting plate 4 are penetrated by the fastening bolts 6 to perform preliminary limiting on the first mounting plate 3 and the second mounting plate 4, and then the fastening bolts 6 are rotated to connect with the nuts 7, so that the first grid arch 1 and the second grid arch 2 are spliced ​​and fixed, and the operation is convenient and quick, thereby improving the installation efficiency, and then improving the construction efficiency, and facilitating the subsequent replacement of parts, and the two U-shaped mounting plates 5 are used to improve the stability during connection and the stability during use, and then the U-shaped mounting frame 8 is clamped on the surface of the first mounting plate 3 and the second mounting plate 4, and the U-shaped mounting frame 8 is fixed to the surface of the first mounting plate 3 and the second mounting plate 4 by the threaded rod 9 at the right end of the U-shaped mounting frame 8, which further improves the stability of the connection between the first mounting plate 3 and the second mounting plate 4 and enhances the strength of the overall structure.

[0038] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A tunnel secondary lining plain concrete three-leg grid arch fixing device, characterized in that: The invention comprises a first grid arch frame (1), a second grid arch frame (2) being arranged at the right end of the first grid arch frame (1), a first mounting plate (3) being fixedly connected to the right end of the first grid arch frame (1), second mounting plates (4) being fixedly connected to both ends of the second grid arch frame (2), U-shaped mounting plates (5) being arranged on the surfaces of the first mounting plate (3) and the second mounting plate (4), a fastening bolt (6) being threadedly connected to the inner wall of the U-shaped mounting plate (5), and a nut (7) being threadedly connected to the surface of the fastening bolt (6).

2. A tunnel secondary lining plain concrete three-legged grid arch fixing device as claimed in claim 1, characterized in that: The inner walls of the first mounting plate (3) and the second mounting plate (4) are both provided with through holes, and the fastening bolts (6) pass through the through holes and penetrate the first mounting plate (3) and the second mounting plate (4).

3. A tunnel secondary lining plain concrete three-leg grid arch fixing device as claimed in claim 1, characterized in that: The nut (7) is located at the lower end of the U-shaped mounting plate (5), and the inner wall of the U-shaped mounting plate (5) is in contact with the surfaces of the first mounting plate (3) and the second mounting plate (4).

4. A tunnel secondary lining plain concrete three-legged grid arch fixing device as claimed in claim 3, characterized in that: The number of the U-shaped mounting plates (5) is two, and the two U-shaped mounting plates (5) are symmetrically distributed with the first mounting plate (3) as the center.

5. A tunnel secondary lining plain concrete three-leg grid arch fixing device as claimed in claim 2, characterized in that: A U-shaped mounting frame (8) is provided on the surface of the first mounting plate (3) and the second mounting plate (4), and the inner wall of the U-shaped mounting frame (8) is in contact with the surface of the first mounting plate (3) and the second mounting plate (4).

6. A tunnel secondary lining plain concrete three-legged grid arch fixing device as claimed in claim 5, characterized in that: The inner wall of the right end of the U-shaped mounting frame (8) is threadedly connected with a threaded rod (9), and the number of the threaded rods (9) is two, and the two threaded rods (9) are symmetrically distributed with the U-shaped mounting frame (8) as the center.

7. A tunnel secondary lining plain concrete three-leg grid arch fixing device as claimed in claim 1, characterized in that: One end of the first grid arch (1) away from the first mounting plate (3) is fixedly connected to a fixing seat (10), and a mounting hole (11) is provided on the inner wall of the fixing seat (10).

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