Anti-falling cover plate for underground tunnel

Abstract

The utility model discloses an anti-falling cover plate for an underground tunnel, and relates to the technical field of building construction protection, the cover plate comprises a main cover plate assembly and an extension plate assembly, the main cover plate assembly comprises a main frame of a rectangular structure and a baffle plate detachably arranged on the main frame; the extending plate assembly comprises a left extending plate and a right extending plate which are arranged on two opposite first side walls of the main frame in a sliding mode correspondingly, and supporting assemblies matched with each other are arranged on the left extending plate and the right extending plate correspondingly. The left extension plate and the right extension plate are mounted on the main frame, so that the cover plate can be matched with tunnels with different widths within a certain width range; the supporting assemblies which are matched with each other are installed on the left extension plate and the right extension plate, when the left extension plate or the right extension plate is unfolded and after the left extension plate or the right extension plate is unfolded, the supporting assemblies can guarantee the overall bearing stability after the cover plate is unfolded, and after a constructor stands on the cover plate, the cover plate is not prone to deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction protection, and more specifically, to an anti-falling cover plate for a tunnel. Background Art

[0002] During the building construction process, when an open tunnel is encountered and the construction is suspended after the tunnel is dug, a protection cover plate needs to be placed on the tunnel before the next step of construction to prevent construction workers from accidentally falling into the tunnel during the suspension period and causing safety accidents.

[0003] In the actual construction process, steel plates are often directly placed on the tunnel to prevent the above problems. Although this can play a certain protective role, due to the relatively thin thickness of the steel plates, when construction workers stand on the steel plates, the steel plates are easily deformed by pressure. If the width of the steel plates is not enough, the construction workers are still likely to fall into the lower tunnel after the steel plates are greatly deformed. At the same time, the dug tunnels have different widths, and in addition, the widths of the steel plates are the same. Therefore, steel plates of different sizes need to be used for tunnels of different widths, which will increase construction consumables.

[0004] Therefore, an anti-falling cover plate for a tunnel is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an anti-falling cover plate for a tunnel.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] An anti-falling cover plate for a tunnel, comprising a main cover plate assembly and an extension plate assembly. The main cover plate assembly includes a main frame in a rectangular structure and a baffle detachably arranged on the main frame. The extension plate assembly includes a left extension plate and a right extension plate respectively slidably arranged on two opposite first side walls of the main frame, and support assemblies adapted to each other are arranged on the left extension plate and the right extension plate.

[0008] Further, in the utility model, the support assembly on the left extension plate includes a plurality of sleeves spaced on the left extension plate, and the extending direction of any of the sleeves is the same as the sliding direction of the left extension plate. The support assembly on the right extension plate includes a plurality of support rods spaced on the right extension plate, and the plurality of support rods correspond to the plurality of sleeves one by one. The extending direction of any of the support rods is the same as the sliding direction of the right extension plate. Any of the support rods can extend into the corresponding sleeve.

[0009] Further, in the utility model, an anti-disengagement mechanism is arranged on the main frame to prevent the left extension plate or the right extension plate from disengaging from the main frame.

[0010] Furthermore, in the present utility model, tenon connection structures and mortise connection structures that are adapted to each other are respectively provided on two opposite second side walls of the main frame.

[0011] Furthermore, in the present utility model, handles are provided on either the left extension plate or the right extension plate.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The present utility model provides an anti-falling cover plate for a tunnel. By installing a left extension plate and a right extension plate on the main frame, the cover plate can be adapted to tunnels with different widths within a certain width range; by installing mutually adapted support components on both the left extension plate and the right extension plate, during and after the unfolding process of the left extension plate or the right extension plate, the support components can ensure the overall load-bearing stability of the cover plate after unfolding, and the cover plate is not easily deformed when construction workers stand on it. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the cover plate of the embodiment of the present utility model in a retracted state;

[0015] Figure 2 is a schematic structural diagram of the cover plate of the embodiment of the present utility model in an unfolded state;

[0016] Figure 3 is Figure 2 a cross-sectional view of;

[0017] Figure 4 is a schematic connection structure diagram of two cover plates of the embodiment of the present utility model.

[0018] In the figure: 101 - main frame; 102 - baffle; 201 - left extension plate; 202 - right extension plate; 301 - sleeve; 302 - support rod; 401 - tenon connection structure; 402 - mortise connection structure; 501 - handle. Detailed Embodiments

[0019] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0021] A kind of anti-falling cover plate for a tunnel, including a main cover plate assembly and an extension plate assembly. The main cover plate assembly includes a main frame 101 with a rectangular structure and a baffle 102 detachably installed on the main frame 101. The extension plate assembly includes a left extension plate 201 and a right extension plate 202 respectively slidably arranged on the main frame 101. Refer to Figures 1-3 , in order to facilitate the installation of the left extension plate 201 and the right extension plate 202, through grooves can be processed on two opposite first side walls of the main frame 101, and the left extension plate 201 and the right extension plate 202 are respectively installed in the two through grooves. At the same time, in order to prevent the left extension plate 201 or the right extension plate 202 from detaching from the main frame 101, an anti-detachment mechanism can be installed on the main frame 101. One structure of the anti-detachment mechanism can be: sliders are installed at both ends of the left extension plate 201 or the right extension plate 202, a chute is arranged in the main frame 101, and the sliders move in the chute to drive the left extension plate 201 or the right extension plate 202 to slide, and limit structures are designed at both ends of the chute to prevent the sliders from separating from the chute. In this way, the unfolding and storage of this cover plate can be realized, and at the same time, the left extension plate 201 or the right extension plate 202 can be prevented from detaching from the main frame 101.

[0022] When the left extension plate 201 or the right extension plate 202 is unfolded, the contact area between the left extension plate 201 or the right extension plate 202 and the main frame 101 will gradually decrease. When the left extension plate 201 or the right extension plate 202 is unfolded to the limit position, the contact area between the left extension plate 201 or the right extension plate 202 and the main frame 101 is the smallest, and at this time, the connection strength between the left extension plate 201 or the right extension plate 202 and the main frame 101 is the lowest. When this unfolded cover plate is placed on the tunnel, the self-weight of the main frame 101 and the baffle 102 will act on the connection between the left extension plate 201 or the right extension plate 202 and the main frame 101, thus affecting the stability of its connection and thus affecting the bearing capacity of the cover plate. To solve this problem, supporting assemblies that are mutually adapted are installed on both the left extension plate 201 and the right extension plate 202.

[0023] Refer to Figure 2 or Figure 3, in this embodiment, the support components on the left extension plate 201 include a plurality of sleeves 301 spaced apart on the left extension plate 201, and the extending direction of any sleeve 301 is the same as the sliding direction of the left extension plate 201; the support components on the right extension plate 202 include a plurality of support rods 302 spaced apart on the right extension plate 202, and the plurality of support rods 302 correspond to the plurality of sleeves 301 one by one, and the extending direction of any support rod 302 is the same as the sliding direction of the right extension plate 202; any support rod 302 can extend into the corresponding sleeve 301. In this way, during and after the unfolding process of the left extension plate 201 or the right extension plate 202, the plurality of sleeves 301 and the plurality of support rods 302 are all in a connected state with the main frame 101, thus ensuring the overall load-bearing stability after the cover plate is unfolded. When storing, after the left extension plate 201 and the right extension plate 202 are retracted into the main frame 101, the plurality of support rods 302 also extend into the plurality of sleeves 301 one by one without interfering with each other.

[0024] Referring to Figure 4 , when the width of the tunnel is smaller than the width of the main frame 101 and the length of the tunnel is longer, in this case, multiple cover plates need to be connected in sequence and paved above the tunnel. To solve this problem, mutually adapted tenon connection structures 401 and mortise connection structures 402 are respectively installed on two opposite second side walls of the main frame 101. In this way, when the tunnel is narrow and long, multiple cover plates can be assembled and covered on the tunnel to prevent construction workers from falling into the tunnel. The tenon connection structure 401 and the mortise connection structure 402 can adopt common dovetail groove structures, T-shaped groove structures, etc.

[0025] When the left extension plate 201 or the right extension plate 202 needs to be unfolded after being retracted into the main frame 101, handles 501 are installed on the left extension plate 201 or the right extension plate 202, which can facilitate pulling the left extension plate 201 or the right extension plate 202 out of the main frame 101.

[0026] The above is only the preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A pit anti-fall cover plate, characterized in that, Comprising: A main cover plate assembly, the main cover plate assembly including a main frame (101) having a rectangular structure and a baffle (102) detachably provided on the main frame (101); An extension plate assembly, the extension plate assembly including a left extension plate (201) and a right extension plate (202) with the same sliding direction, the left extension plate (201) and the right extension plate (202) being respectively slidably provided on two opposite first side walls of the main frame (101), and support assemblies adapted to each other being provided on both the left extension plate (201) and the right extension plate (202).

2. The anti-falling cover plate for a tunnel according to claim 1, wherein The support assembly on the left extension plate (201) includes a plurality of sleeves (301) spaced on the left extension plate (201), the extending direction of any of the sleeves (301) being the same as the sliding direction of the left extension plate (201); the support assembly on the right extension plate (202) includes a plurality of support rods (302) spaced on the right extension plate (202), the plurality of support rods (302) corresponding one by one to the plurality of sleeves (301), and the extending direction of any of the support rods (302) being the same as the sliding direction of the right extension plate (202); any of the support rods (302) can extend into the corresponding sleeve (301).

3. The anti-falling cover plate for a tunnel according to claim 1, wherein An anti-disengagement mechanism for preventing the left extension plate (201) or the right extension plate (202) from disengaging from the main frame (101) is provided on the main frame (101).

4. A kind of anti-falling cover plate for mine roadway according to claim 1 or 2, characterized in that, Mortise connection structures (401) and tenon connection structures (402) adapted to each other are respectively provided on two opposite second side walls of the main frame (101).

5. A kind of anti-falling cover plate for mine adit according to claim 1 or 2, characterized in that A handle (501) is provided on either the left extension plate (201) or the right extension plate (202).

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