Tunnel portal protection device for tunnel construction

Abstract

The utility model relates to the field of protective devices, in particular to a tunnel portal protective device for tunnel construction, which comprises a protective shed, the protective shed comprises a first bottom plate, one side of an inner cavity of the first bottom plate is rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a protective plate, one side of the protective plate is provided with a second bottom plate, and the second bottom plate is fixedly connected with the first bottom plate. The motor rotates to drive the lead screw to rotate, the lead screw is in threaded connection with the movable block to enable the connecting rod to move, the connecting rod drives the fixed block to move, the fixed block drives the protective plate to move, and one side of the protective plate rotates around the first bottom plate, so that the effect of overturning the ceiling is achieved, and the problem that the protective shed is in a protective state for a long time; the problem that the safety guarantee of constructors is affected due to the fact that rocks falling from the mountain are prone to accumulation on the roof of the protective shed and the protective shed is subjected to extra load and the structure of the protective shed is prone to deformation due to long-time load in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of protective devices, specifically a tunnel entrance protective device for tunnel construction. Background Technology

[0002] Protective devices are facilities that use shielding methods to isolate the human body from various hazards in production. These hazards are widespread in various production scenarios. Taking tunnel construction as an example, as a special production operation, it refers to a series of engineering operations aimed at constructing tunnel structures in specific complex environments such as underground, inside mountains, or underwater. Protective devices play a crucial role in ensuring the safety of construction personnel and isolating them from hazards such as falling rocks and mechanical injuries.

[0003] Tunnels are usually built inside mountains. When construction workers enter the tunnel, the protective canopy at the tunnel entrance can effectively block falling rocks from the mountain and prevent them from being injured by falling rocks. However, because the protective canopy is in a protective state for a long time, falling rocks tend to accumulate on the top of the canopy, putting extra load on it. This long-term load can cause the structure of the protective canopy to deform, thus affecting the safety of the construction workers. Utility Model Content

[0004] To address the shortcomings of existing technologies, which are prone to accumulating rocks from landslides on the roof of protective sheds due to their prolonged protective operation, thus subjecting the sheds to additional loads and causing structural deformation over time, thereby compromising the safety of construction workers, this invention proposes a tunnel entrance protection device for tunnel construction.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a tunnel entrance protection device for tunnel construction, including a protective shed, the protective shed including a first base plate, a rotating shaft rotatably connected to one side of the inner cavity of the first base plate, a protective plate fixedly connected to one end of the rotating shaft, and a second base plate provided on one side of the protective plate, the number of the first base plate and the second base plate are both two.

[0006] A flipping mechanism is provided on one side of the second base plate. The flipping mechanism includes a fixed plate, the surface of which is fixedly connected to one side of the second base plate. A motor is fixedly connected to one side of the fixed plate, and a lead screw is fixedly connected to the output end of the motor. One end of the lead screw is rotatably connected to a support block via a bearing. The surface of the support block is fixedly connected to one side of the first base plate. A moving block is threadedly connected to the surface of the lead screw. A connecting rod is rotatably connected to one side of the moving block. There are two connecting rods. A fixed block is rotatably connected to one side of the connecting rod. The top of the fixed block is fixedly connected to the bottom of the protective plate.

[0007] Preferably, a support plate is fixedly connected to one side of the second base plate, and the top of the support plate is movably connected to the bottom of the protective plate.

[0008] Preferably, a limiting block is fixedly connected to one side of the connecting rod, and the number of the limiting blocks is four, arranged in pairs.

[0009] Preferably, the inner cavity of the movable block is movably connected to a guide post, and there are two guide posts. One end of the guide post is fixedly connected to one side of the fixed block, and the other end of the guide post is fixedly connected to one side of the fixed plate.

[0010] Preferably, a baffle is movably connected to one side of the protective plate, and there are two baffles. The bottom of the baffle is fixedly connected to the top of the first base plate and the second base plate.

[0011] Preferably, a diversion plate is fixedly connected to one side of the first base plate, and a collection box is movably connected to the bottom of the diversion plate.

[0012] Preferably, a mounting block is fixedly connected to one side of the collection box, and there are two mounting blocks, with a mounting groove on one side of each mounting block.

[0013] The advantages of this utility model are:

[0014] This invention utilizes a motor to drive a lead screw, which in turn moves a connecting rod via a threaded connection between the lead screw and a moving block. The connecting rod then moves a fixed block, which in turn moves a protective plate. One side of the protective plate rotates around a first base plate, achieving the effect of flipping the roof. This solves the problem that when the protective shed is in a protective state for a long time, falling rocks from the mountain tend to accumulate on the roof, causing the shed to be subjected to additional loads. Prolonged loads can easily deform the structure of the protective shed, thus affecting the safety of construction workers. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the protective plate structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection of the movable block structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the collection box of this utility model.

[0020] In the diagram: 1. Protective shed; 101. First base plate; 102. Protective plate; 103. Second base plate; 104. Rotating shaft; 2. Tilting mechanism; 201. Fixed plate; 202. Motor; 203. Support plate; 204. Baffle; 205. Fixed block; 206. Support block; 207. Moving block; 208. Connecting rod; 209. Limiting block; 210. Guide column; 211. Drainage plate; 212. Collection box; 213. Mounting block; 214. Mounting groove; 215. Lead screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a tunnel entrance protection device for tunnel construction. (Refer to...) Figure 1 , Figure 2 and Figure 3 A tunnel entrance protection device for tunnel construction includes a protective shed 1. The protective shed 1 includes a first base plate 101. A rotating shaft 104 is rotatably connected to one side of the inner cavity of the first base plate 101. A protective plate 102 is fixedly connected to one end of the rotating shaft 104. A second base plate 103 is provided on one side of the protective plate 102. There are two first base plates 101 and two base plates 103.

[0024] A flipping mechanism 2 is provided on one side of the second base plate 103. The flipping mechanism 2 includes a fixed plate 201. The surface of the fixed plate 201 is fixedly connected to one side of the second base plate 103. A motor 202 is fixedly connected to one side of the fixed plate 201. A lead screw 215 is fixedly connected to the output end of the motor 202. A support block 206 is rotatably connected to one end of the lead screw 215 through a bearing. The surface of the support block 206 is fixedly connected to one side of the first base plate 101. A moving block 207 is threadedly connected to the surface of the lead screw 215. A connecting rod 208 is rotatably connected to one side of the moving block 207. There are two connecting rods 208. A fixed block 205 is rotatably connected to one side of the connecting rod 208. The top of the fixed block 205 is fixedly connected to the bottom of the protective plate 102.

[0025] Reference Figure 2 A support plate 203 is fixedly connected to one side of the second base plate 103. The top of the support plate 203 is movably connected to the bottom of the protective plate 102. The support plate 203 can support the protective plate 102 after rotation, and prevent one side of the support plate 203 from losing support, thereby affecting the normal operation of the protective plate 102.

[0026] Reference Figure 3 A limiting block 209 is fixedly connected to one side of the connecting rod 208. There are four limiting blocks 209, which are arranged in pairs. By setting the limiting blocks 209, the rotation of the connecting rod 208 can be limited, so as to prevent the connecting rod 208 from detaching from one side of the fixed block 205 and the moving block 207 during the rotation process.

[0027] Reference Figure 3 The inner cavity of the movable block 207 is movably connected with guide posts 210. There are two guide posts 210. One end of the guide post 210 is fixedly connected to one side of the fixed block 205, and the other end of the guide post 210 is fixedly connected to one side of the fixed plate 201. The guide posts 210 guide the movement of the movable block 207, making the movable block 207 more stable during the movement and preventing the movable block 207 from deviating during the movement.

[0028] Reference Figure 2 A baffle 204 is movably connected to one side of the protective plate 102. There are two baffles 204. The bottom of the baffle 204 is fixedly connected to the top of the first base plate 101 and the second base plate 103. With the baffle 204, when the protective plate 102 is rotated into an inclined state, the baffle 204 can intercept the falling rocks on the top of the protective plate 102 and prevent them from falling from one side of the protective plate 102.

[0029] Reference Figure 4A diversion plate 211 is fixedly connected to one side of the first base plate 101, and a collection box 212 is movably connected to the bottom of the diversion plate 211. The collection box 212 can collect the falling rocks, prevent the falling rocks from scattering, and centrally process the falling rocks.

[0030] Reference Figure 4 The collection box 212 is fixedly connected to one side of the mounting block 213. There are two mounting blocks 213. One side of the mounting block 213 is provided with a mounting groove 214. The mounting groove 214 is used to fix the position of the collection box 212 to prevent the collection box 212 from shifting under the action of external force, which would affect the collection of fallen rocks.

[0031] Working principle: The operator manually places the collection box 212 at the bottom of the diversion plate 211 and fixes the diversion plate 211 with bolts. Then, the motor 202 drives the lead screw 215 to rotate. Through the threaded connection between the lead screw 215 and the moving block 207, the moving block 207 moves towards one end of the lead screw 215. The inner cavity of the moving block 207 slides on the surface of the guide post 210. The guide post 210 guides the movement of the moving block 207, making the movement of the moving block 207 more stable. The movement of the moving block 207 drives the connecting rod 208 to move. One side of the connecting rod 208 rotates around one side of the moving block 207. The connecting rod 208 drives the fixed block 205 to move. The other side of the connecting rod 208 rotates around one side of the fixed block 205. The fixed block 205 drives the protective plate 102 to move. The protective plate 102 drives the rotating shaft 1. 04. The inner cavity of the first base plate 101 is rotated, causing the protective plate 102 to tilt. Under the action of gravity, the falling rocks slide down the slope of the protective plate 102. Then, the falling rocks are collected by the collection box 212 for centralized processing. Then, the motor 202 drives the lead screw 215 to rotate. Through the threaded connection between the lead screw 215 and the moving block 207, the moving block 207 moves to the other end. The moving block 207 drives the connecting rod 208 to move. One side of the connecting rod 208 rotates around one side of the moving block 207. The connecting rod 208 drives the fixed block 205 to move. The fixed block 205 drives the protective plate 102 to move. The protective plate 102 rotates around one side of the first base plate 101, making the protective plate 102 horizontal. The support plate 203 supports the protective plate 102, so that the protective plate 102 can better protect the construction personnel.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tunnel portal protection device for tunnel construction, comprising a protection shed (1), characterized in that: The protective shed (1) includes a first bottom plate (101), one side of the inner cavity of the first bottom plate (101) is rotatably connected with a rotating shaft (104), one end of the rotating shaft (104) is fixedly connected with a protective plate (102), one side of the protective plate (102) is provided with a second bottom plate (103), and the number of the first bottom plate (101) and the second bottom plate (103) is two. One side of the second bottom plate (103) is provided with a turnover mechanism (2), the turnover mechanism (2) includes a fixed plate (201), the surface of the fixed plate (201) is fixedly connected with one side of the second bottom plate (103), one side of the fixed plate (201) is fixedly connected with a motor (202), the output end of the motor (202) is fixedly connected with a lead screw (215), one end of the lead screw (215) is rotatably connected with a support block (206) through a bearing, the surface of the support block (206) is fixedly connected with one side of the first bottom plate (101), the surface of the lead screw (215) is threadedly connected with a moving block (207), one side of the moving block (207) is rotatably connected with a connecting rod (208), the number of the connecting rod (208) is two, one side of the connecting rod (208) is rotatably connected with a fixed block (205), and the top of the fixed block (205) is fixedly connected with the bottom of the protective plate (102).

2. The tunnel portal protection device for tunnel construction according to claim 1, characterized in that: One side of the second bottom plate (103) is fixedly connected with a support plate (203), and the top of the support plate (203) is movably connected with the bottom of the protective plate (102).

3. The tunnel portal protection device for tunnel construction of claim 1, wherein: One side of the connecting rod (208) is fixedly connected with a limiting block (209), and the number of the limiting block (209) is four, and two by two.

4. The tunnel portal protection device for tunnel construction of claim 1, wherein: The inner cavity of the moving block (207) is movably connected with a guide column (210), the number of the guide column (210) is two, one end of the guide column (210) is fixedly connected with one side of the fixed block (205), and the other end of the guide column (210) is fixedly connected with one side of the fixed plate (201).

5. The tunnel portal protection device for tunnel construction of claim 1, wherein: One side of the protective plate (102) is movably connected with a baffle (204), the number of the baffle (204) is two, and the bottom of the baffle (204) is fixedly connected with the top of the first bottom plate (101) and the second bottom plate (103).

6. The tunnel portal protection device for tunnel construction of claim 1, wherein: One side of the first bottom plate (101) is fixedly connected with a drainage plate (211), and the bottom of the drainage plate (211) is movably connected with a collecting box (212).

7. The tunnel portal protection device for tunnel construction of claim 6, wherein: One side of the collecting box (212) is fixedly connected with a mounting block (213), the number of the mounting block (213) is two, and one side of the mounting block (213) is provided with a mounting groove (214).

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