Supporting frame for tunnel construction

Abstract

The supporting frame for tunnel construction comprises a supporting frame body, a connecting assembly and a sliding rail, the supporting frame body is composed of a main body frame, a top plate, idler wheels and positioning columns, the main body frame is composed of profile steel, the top of the main body frame is fixedly provided with the arc-shaped top plate, and the left end and the right end of the top plate are provided with stretchable expansion plates; the bottom of the main body frame is fixedly provided with rolling wheels and positioning columns, the rolling wheels are installed on the sliding rails, the connecting assembly is fixedly installed between the two supporting frames and used for connecting the two supporting frames, the connecting assembly is composed of a left side plate, a right side plate and two cross rods, and the two cross rods are rotationally connected with each other; the tops of the two cross rods are rotatably connected with the left side plate and the right side plate respectively, sliding grooves are formed in the left side plate and the right side plate, and the bottoms of the two cross rods are locked by bolts in the sliding grooves. According to the utility model, the effect of supporting while digging is achieved, and the working face can be temporarily supported when short-term shutdown is encountered.

Description

Technical Field

[0001] The utility model relates to the technical field related to tunnel construction, and specifically relates to a support frame for tunnel construction. Background Art

[0002] Tunnel support is a crucial part of tunnel engineering. Reasonable selection of support materials, scientific design of support structures, and adoption of safe construction methods and measures can ensure the stability and safety of tunnel construction.

[0003] Currently, the structures of the tunnel support frames in use are often fixed. However, the depths of support required for different construction tunnels are different, and for in-tunnel support, the distance from the support to the excavation face should not be too long. Therefore, a new support frame needs to be erected every time a certain distance is excavated. When encountering short-term work stoppages, the working face also needs to be temporarily supported, which requires construction workers to find solutions on-site using on-site materials, causing great inconvenience. To solve the above problems, we want to design a support frame that is suitable for supporting as excavation progresses and can also be used for temporary support of the working face. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a support frame for tunnel construction to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A support frame for tunnel construction includes: a support frame, a connection component, and a slide rail. The support frame consists of a main frame, a top plate, rollers, and positioning columns. The main frame is composed of steel profiles, and an arc-shaped top plate is fixedly installed at the top of the main frame. Stretchable extension plates are provided at the left and right ends of the top plate. Rollers and positioning columns are fixedly installed at the bottom of the main frame. The rollers are installed on the slide rail. The connection component is fixedly installed between two support frames for connecting the two support frames. The connection component consists of a left plate, a right plate, and two cross bars. The two cross bars are rotatably connected to each other, and the tops of the two cross bars are rotatably connected to the left plate and the right plate respectively. Chutes are provided on both the left plate and the right plate. The bottoms of the two cross bars are rotatably installed in the chutes and locked by bolts at the same time.

[0007] As a further solution of the utility model: The top plate is composed of two semi-circular sub-top plates spliced together, and the sub-top plates are detachably installed on the main frame.

[0008] As a further solution of the utility model: Grooves are provided at the left and right ends of the sub-top plates. The extension plates can be slidably installed in the grooves. Flanges are provided at the edge positions of the extension plates, and the flanges have magnetism.

[0009] As a further solution of the present utility model: the telescopic length of the expansion plate is set according to the adjustment distance between the left plate and the right plate.

[0010] As a further solution of the present utility model: the positioning column is a threaded column, and the positioning column passes through the bottom section steel of the main body frame and is locked by two nuts.

[0011] As a further solution of the present utility model: the left plate and the right plate are fixedly installed on the support frame, and the chutes on the left plate and the right plate avoid the support frame.

[0012] As a further solution of the present utility model: the shape of the roller matches the shape of the slide rail.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the support frame of the present utility model can adjust the support depth. After being built, it can play the role of supporting while digging along with the construction process. And when there is a short-term shutdown, it can also provide temporary support for the working face. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the support frame and the connection component of the present utility model.

[0015] Figure 2 It is a front view schematic diagram of the support frame and the connection component of the present utility model.

[0016] Figure 3 It is a schematic diagram of the structure of the support frame of the present utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the connection component of the present utility model.

[0018] Figure 5 It is a schematic diagram of the installation structure of the roller and the slide rail of the present utility model.

[0019] Figure 6 It is a schematic diagram of the structure of the roller and the positioning column of the present utility model.

[0020] Figure 7 It is a schematic diagram of the structure of the top plate of the present utility model.

[0021] Figure 8 It is a schematic diagram of the structure of the top plate and the expansion plate of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figures 1-8 , in the embodiment of the present utility model, a support frame for tunnel construction includes: a support frame 1, a connection assembly 2, and a slide rail 3. The support frame 1 is composed of a main frame 11, a top plate 12, rollers 13, and positioning columns 14. The main frame 11 is made of profiled steel, and an arc-shaped top plate 12 is fixedly installed at the top of the main frame 11. Stretchable extension plates 123 are provided at the left and right ends of the top plate 12. Rollers 13 and positioning columns 14 are fixedly installed at the bottom of the main frame 11. The rollers 13 are installed on the slide rail 3, and the shape of the rollers 13 matches that of the slide rail 3. The positioning columns 14 are threaded columns, and the positioning columns 14 pass through the bottom profiled steel of the main frame 11 and are locked by two nuts.

[0024] During construction, first lay the slide rail 3, then build the support frame 1, install the support frame 1 on the slide rail 3. After installation, loosen the nuts locking the positioning columns 14, let the bottom of the positioning columns 14 abut against the slide rail 3, and then tighten the nuts again to fix the position of the positioning columns 14, which also plays a limiting role to limit the position of the support frame 1 on the slide rail 3.

[0025] The connection assembly 2 is fixedly installed between two support frames 1 for connecting the two support frames 1. The connection assembly 2 is composed of a left side plate 21, a right side plate 22, and two cross bars 23. The two cross bars 23 are rotatably connected to each other in the middle, and the tops of the two cross bars 23 are rotatably connected to the left side plate 21 and the right side plate 22 respectively. Chute grooves 24 are provided on both the left side plate 21 and the right side plate 22. The bottoms of the two cross bars 23 are rotatably installed in the chute grooves 24 and locked by bolts. The left side plate 21 and the right side plate 22 are fixedly installed on the support frame 1, and the chute grooves 24 on the left side plate 21 and the right side plate 22 avoid the support frame 1.

[0026] As the construction progresses, the number of support frames 1 will increase. If it is necessary to support the newly excavated tunnel, the nuts of the positioning columns 14 on the support frame 1 closest to the working face can be loosened first to make the support frame 1 in a slidable state. Then loosen the bolts of the two cross bars 23 in the chute grooves 24 to enable the cross bars 23 to change the crossing angle and elongate the distance between the left side plate 21 and the right side plate 22, so as to push the support frame 1 towards the newly excavated tunnel section, achieving the effect of supporting while excavating. In case of short-term suspension of work, it can also provide temporary support for the working face.

[0027] The top plate 12 is formed by splicing two semi-circular sub-top plates 121, and the sub-top plates 121 are detachably installed on the main frame 11. Grooves 122 are provided at the left and right ends of the sub-top plates 121, and the extension plates 123 are slidably installed in the grooves 122. Flanges 124 are provided at the edge positions of the extension plates 123, and the flanges 124 have magnetism.

[0028] After the support frame 1 is built, the top plates 12 of two adjacent support frames 1 are attached together, that is, the flange 124 parts of the two top plates 12 are attracted to each other. Then, as the distance between the two support frames 1 is lengthened, the flange 124 parts are always attracted, and the extension plate 123 will be pulled out until it is fully unfolded. The telescopic length of the extension plate 123 is set according to the adjustment distance between the left side plate 21 and the right side plate 22, so as to ensure that the top plate 12 and the adjacent top plate 12 are always in a fitting state during the adjustment of the left side plate 21 and the right side plate 22.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claim.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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 support frame for tunnel construction, comprising: A support frame (1), a connecting assembly (2) and a slide rail (3), characterized in that the support frame (1) is composed of a main frame (11), a top plate (12), a roller (13) and a positioning column (14), the main frame (11) is made of steel, and a circular arc-shaped top plate (12) is fixedly installed on the top of the main frame (11), and stretchable expansion plates (123) are provided on the left and right ends of the top plate (12), and the roller (13) and the positioning column (14) are fixedly installed on the bottom of the main frame (11), and the roller (13) is installed on the slide rail (3). The connecting assembly (2) is fixedly mounted between the two supporting frames (1) for connecting the two supporting frames (1). The connecting assembly (2) comprises a left side plate (21), a right side plate (22) and two cross rods (23). The two cross rods (23) are rotatably connected to each other in the middle, and the tops of the two cross rods (23) are rotatably connected to the left side plate (21) and the right side plate (22), respectively. Slide grooves (24) are provided on the left side plate (21) and the right side plate (22), and the bottoms of the two cross rods (23) are rotatably mounted in the slide grooves (24) and are locked by bolts at the same time.

2. A tunnel construction support frame according to claim 1, characterized in that: The top plate (12) is composed of two semi-arc-shaped sub-top plates (121) assembled together, and the sub-top plates (121) are detachably mounted on the main frame (11).

3. A tunnel construction support frame according to claim 2, characterized in that: Grooves (122) are arranged at the left and right ends of the split top plate (121), the expansion plate (123) can be slidably mounted in the grooves (122), and flanges (124) are arranged at the edge of the expansion plate (123), and the flanges (124) are magnetic.

4. A tunnel construction support frame according to claim 3, characterized in that: The telescopic length of the expansion plate (123) is set according to the adjustment distance between the left plate (21) and the right plate (22).

5. A tunnel construction support frame according to claim 1, characterized in that: The positioning column (14) is a threaded column, and the positioning column (14) passes through the bottom steel section of the main frame (11) and is locked by two nuts.

6. A tunnel construction support frame according to claim 1, characterized in that: The left side plate (21) and the right side plate (22) are fixedly mounted on the support frame (1), and the slide grooves (24) on the left side plate (21) and the right side plate (22) avoid the support frame (1).

7. A tunnel construction support frame according to claim 1, characterized in that: The shape of the roller (13) matches that of the slide rail (3).

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