Inverted arch trestle anti-falling device for large-span tunnel construction

Abstract

The utility model relates to the technical field of tunnel construction, and provides a large-span tunnel construction inverted arch trestle anti-falling device which comprises a plurality of anti-falling units. The multiple anti-falling units are sequentially laid above a pouring channel of the trestle body in the length direction of the trestle body. Each anti-falling unit comprises an anti-falling plate and a movable connecting piece, one side of each anti-falling plate is connected with the corresponding movable connecting piece, and the movable connecting pieces are further connected with the portion, on one side of the pouring channel, of the trestle body so that the anti-falling plates can be movably connected with the trestle body. Smooth inverted arch pouring construction can be guaranteed, the anti-falling effect can be guaranteed, and construction safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to an anti-falling device for an inverted trestle in large-span tunnel construction. Background Art

[0002] In the tunnel construction project, several processes such as tunnel excavation, initial support, lower step support, secondary lining invert, and secondary lining construction are constructed simultaneously. In order to ensure the normal passage of construction machinery, materials and personnel, a tunnel trestle is generally used in the invert construction area. However, the main bridge of the trestle generally includes two bridge bodies, which are used for construction vehicles or personnel to walk. The two bridge bodies are spaced to form a casting channel for the casting construction of the invert and tunnel bottom. There is a risk of people or debris falling in the casting channel on the trestle. The traditional anti-falling method is to hang an anti-falling net under the casting channel. For example, the patent with publication number CN211472123U sets a scoop mechanism under the trestle to receive fallen debris. However, the problem with this anti-falling structure is that the casting channel still exists, and there is still a risk of falling when construction personnel walk on the trestle, and this type of structure is not conducive to the later invert casting construction. Utility Model Content

[0003] In view of the above problems in the prior art, the present application proposes a large-span tunnel construction invert trestle anti-falling device to solve the problem that the existing trestle anti-falling structure has poor anti-falling effect and is not conducive to the subsequent invert casting construction.

[0004] The utility model proposes an anti-falling device for an inverted arch trestle in a large-span tunnel construction, comprising a plurality of anti-falling units; the plurality of anti-falling units are sequentially laid above a casting channel of a trestle body along the length direction of the trestle body; each of the anti-falling units comprises an anti-falling plate and a movable connecting piece, one side of the anti-falling plate is connected to the movable connecting piece, and the movable connecting piece is also connected to the trestle body on one side of the casting channel to realize the movable connection between the anti-falling plate and the trestle body.

[0005] Furthermore, the movable connecting member includes a hinged member, and the hinged member has a first connecting member and a second connecting member that are rotatably matched, the first connecting member is connected to the anti-fall plate, and the second connecting member is connected to the pier body.

[0006] Furthermore, the movable connection piece is connected to the trestle body on the same side of the casting channel.

[0007] Furthermore, one side of the anti-falling plate is connected to the trestle body on one side of the casting channel, and the other side of the anti-falling plate is mounted on the trestle body on the other side of the casting channel.

[0008] Furthermore, the anti-fall plate is a steel plate or a grille plate.

[0009] Furthermore, the anti-falling unit also includes a lifting structure arranged on the anti-falling plate.

[0010] Furthermore, the pulling structure includes a pull rope or a handle.

[0011] Furthermore, the anti-falling device also includes guardrails arranged on both sides of the pier body.

[0012] Furthermore, the length and width of the anti-fall plate are both greater than the width of the casting channel.

[0013] Furthermore, the anti-fall plate has a thickness greater than or equal to 10 mm.

[0014] The beneficial effects of the utility model are as follows: by setting an anti-falling plate covering the top of the pouring channel on the trestle body, and the anti-falling plate is movably connected to the trestle body, when the anti-falling plate covers the top of the pouring channel, it plays an anti-falling role, and the construction personnel can walk on the anti-falling plate, which improves the construction safety and eliminates the risk of falling. When the anti-falling plate is opened, the inverted arch pouring construction can be carried out. Since the anti-falling units are arranged in sequence along the length direction of the trestle body, the local anti-falling plate can be opened according to the inverted arch pouring area, which can not only ensure the smooth progress of the inverted arch pouring construction, but also ensure the anti-falling effect of other areas, further improving the construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side structural schematic diagram of the utility model of a large-span tunnel construction inverted arch trestle anti-falling device.

[0016] Figure 2 for Figure 1 Schematic diagram of the top view of the anti-fall device.

[0017] Figure 3 for Figure 2 Schematic diagram of the anti-fall device with all anti-fall plates opened.

[0018] In the figure, 1-anti-fall plate; 2-hinge; 3-pier body; 4-casting channel; 5-guardrail. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 3The anti-fall device for the large-span tunnel construction inverted arch trestle shown includes multiple anti-fall units; the multiple anti-fall units are laid in sequence above the casting channel 4 of the trestle body 3 along the length direction of the trestle body 3; each anti-fall unit includes an anti-fall plate 1 and a movable connecting piece, one side of the anti-fall plate 1 is connected to the movable connecting piece, and the movable connecting piece is also connected to the trestle body 3 on one side of the casting channel 4 to realize the movable connection between the anti-fall plate 1 and the trestle body 3.

[0021] The movable connecting member includes an articulated member 2, which has a first connecting member and a second connecting member that are rotatably matched, the first connecting member is connected to the anti-falling plate 1, and the second connecting member is connected to the trestle body 3. The articulated member 2 can be a hinge. At least two articulated members 2 are installed on each anti-falling plate 1.

[0022] The movable connection piece is connected to the trestle body 3 on the same side of the pouring channel 4. One side of the anti-falling plate 1 is connected to the trestle body 3 on one side of the pouring channel 4, and the other side of the anti-falling plate 1 is draped on the trestle body 3 on the other side of the pouring channel 4. A hinge 2 is provided on the same side of all the anti-falling plates 1, and after the anti-falling plates 1 are turned over, they are located on the same side of the pouring channel 4.

[0023] The anti-falling plate 1 is a steel plate or a grating plate. The thickness of the anti-falling plate 1 is greater than or equal to 10 mm. The length and width of the anti-falling plate 1 are both greater than the width of the pouring channel 4. For example, the width of the pouring channel 4 is 600 mm, and the length of the anti-falling plate 1 is 950 mm and the width is 700 mm.

[0024] In order to make it easier to lift the anti-fall plate 1, the anti-fall unit also includes a lifting structure arranged on the anti-fall plate 1. The lifting structure includes a pull rope or a handle. The handle can be a concave handle to avoid the handle hindering walking.

[0025] The anti-falling device also includes guardrails 5 arranged on both sides of the trestle body 3.

[0026] like Figure 2 As shown, the anti-fall plate 1 covers the pouring channel 4, and construction workers can pass through it safely. Figure 3 As shown, the anti-falling plate 1 is turned over, and the anti-falling plate 1 covers the trestle body 3 on one side of the pouring channel 4. When pouring the invert arch and the tunnel bottom filling construction, 2-3 anti-falling plates 1 near the pouring area can be opened. After the construction is completed, the opened anti-falling plates 1 are closed to keep covering the pouring channel 4.

[0027] When the trestle needs to be moved, all the anti-falling plates 1 can be turned over to the same side of the pouring channel 4. At the end of the movement, the anti-falling plates 1 are closed again to cover the pouring channel 4, and the construction workers can walk safely.

[0028] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A large-span tunnel construction inverted arch trestle anti-falling device, characterized in that: It comprises a plurality of anti-falling units; the plurality of anti-falling units are sequentially laid above the casting channel of the trestle body along the length direction of the trestle body; each of the anti-falling units comprises an anti-falling plate and a movable connecting piece, one side of the anti-falling plate is connected with the movable connecting piece, and the movable connecting piece is also connected to the trestle body on one side of the casting channel to realize the movable connection between the anti-falling plate and the trestle body.

2. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The movable connecting member comprises a hinged member, and the hinged member has a first connecting member and a second connecting member that are rotatably matched, the first connecting member is connected to the anti-fall plate, and the second connecting member is connected to the trestle body.

3. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The movable connecting piece is connected to the trestle body on the same side of the casting channel.

4. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 3, characterized in that: One side of the anti-falling plate is connected to the trestle body on one side of the pouring channel, and the other side of the anti-falling plate is built on the trestle body on the other side of the pouring channel.

5. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The anti-falling plate is a steel plate or a grid plate.

6. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The anti-falling unit also includes a lifting structure arranged on the anti-falling plate.

7. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 6, characterized in that: The pulling structure includes a pull rope or a handle.

8. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The anti-falling device also includes guardrails arranged on both sides of the trestle body.

9. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The length and width of the anti-falling plate are both greater than the width of the casting channel.

10. The anti-falling device for an inverted arch trestle in a large-span tunnel construction according to claim 1, characterized in that: The thickness of the anti-fall plate is greater than or equal to 10 mm.

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