Tunnel blasting safety protection structure

Abstract

The tunnel blasting safety protection structure comprises a base plate and a shell box, a plurality of moving wheels are arranged at the bottom of the base plate, the shell box is fixedly connected to the base plate, an opening is formed in the top of the shell box, an inner cavity of the shell box is connected with a lining plate through a shifting assembly, a first baffle is hinged to one side of the lining plate, and a second baffle is hinged to the lower side of the first baffle. A transverse strip is arranged on the second baffle, at least one set of push rods movably penetrate through the transverse strip, a connecting sleeve is arranged on the shell box, and the push rods can be in threaded connection with the connecting sleeve; the lining plate can be rapidly stored by laterally rotating the first baffle and vertically rotating the second baffle and storing the lining plate into the shell box through the shifting assembly, the occupied space is reduced, follow-up tunnel construction is facilitated, when next blasting is carried out, the protection structure is moved to the needed position to be unfolded for use, multiple times of disassembly and assembly are not needed, and the construction efficiency is improved. And the convenience is good, and the tunnel construction efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel blasting, in particular to a tunnel blasting safety protection structure. Background Technique

[0002] Tunnels are key projects in the construction of highways, railways, etc. When building highways and railways and encountering mountains, tunnels need to be excavated to form passages. The common excavation methods for tunnels include the drill and blast method, the shield method, and the roadheader method. Since the drill and blast method has strong adaptability to geological conditions and low excavation costs, it is particularly suitable for the construction of hard rock tunnels, broken rock tunnels, and a large number of short tunnels. Therefore, the drill and blast method is still the commonly used tunnel excavation method at home and abroad.

[0003] During tunnel blasting construction, flying objects such as flying stones will be generated. Blasting flying stones are often the main cause of casualties, equipment damage, and building damage. Therefore, controlling flying stones during tunnel blasting construction is an important measure to prevent accidents.

[0004] Traditionally, scaffolding and templates are generally assembled to play a protective role. During the entire construction process, it is necessary to disassemble, install, and adjust the position multiple times according to different blasting positions, which is inconvenient to operate. Therefore, the utility model proposes a tunnel blasting safety protection structure that can solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a tunnel blasting safety protection structure to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A tunnel blasting safety protection structure includes a seat plate and a shell box. A plurality of moving wheels are arranged at the bottom of the seat plate. The shell box is fixedly connected to the seat plate, and the top of the shell box has an open mouth;

[0007] A lining plate is connected to the inner cavity of the shell box through a displacement assembly. One side of the lining plate is hinged with a first baffle, and the lower side of the first baffle is hinged with a second baffle;

[0008] A cross bar is arranged on the second baffle. At least one group of push rods is movably penetrated through the cross bar. A connecting sleeve is arranged on the shell box, and the push rod can be screwed with the connecting sleeve.

[0009] As a preferred technical solution, the moving wheels are self-locking wheels, and a groove is arranged on the seat plate for placing counterweight blocks.

[0010] As a preferred technical solution, rubber layers are arranged on the front side walls of the shell box, the lining plate, the first baffle, and the second baffle.

[0011] As a preferred technical solution, a pulling belt is provided on the second baffle, a pulley and a motor body are provided on the first baffle, a winding drum is connected to the output end of the motor body, and the pulling belt bypasses the pulley and is connected to the winding drum.

[0012] As a preferred technical solution, the displacement assembly includes a hydraulic cylinder body installed in the housing box, a movable rod of the hydraulic cylinder body extends upward and is connected to a push plate, and the push plate is connected to the lining plate.

[0013] As a preferred technical solution, a receiving cavity is formed on the lining plate, and the hydraulic cylinder body can be received in the receiving cavity.

[0014] As a preferred technical solution, a cavity is formed on both the first baffle and the second baffle, and a third baffle is slidably connected in each cavity.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The first baffle can be rotated laterally and the second baffle can be rotated vertically, and the lining plate can be received in the housing box through the displacement assembly for quick storage, reducing the occupied space and facilitating subsequent tunnel construction. And when the next blasting is carried out, the protection structure can be moved to the required position and unfolded for use, without the need for multiple disassembly and assembly, with good convenience, effectively improving the efficiency of tunnel construction;

[0017] By screwing the rotating push rod and the connecting sleeve, the positions of the first baffle and the second baffle are restricted, avoiding the situation that the first baffle and the second baffle rotate to cause occlusion and gaps, and further ensuring the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model from the first angle;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present utility model from the second angle;

[0020] Figure 3 It is a schematic diagram of the connection relationship between the first baffle, the second baffle and the lining plate of the present utility model;

[0021] Figure 4 It is a schematic diagram of the connection relationship between the integral lining plate and the housing box of the present utility model;

[0022] In the figure: 10, seat board; 11, moving wheel; 12, groove; 20, shell box; 21, connecting sleeve; 30, lining board; 31, receiving cavity; 40, first baffle; 41, pulley; 42, motor body; 43, drum; 50, second baffle; 51, pulling belt; 52, push rod; 60, third baffle; 70, displacement assembly; 71, hydraulic cylinder body; 72, push plate; 80, rubber layer. Detailed implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , a tunnel blasting safety protection structure is provided, aiming to solve the problem that in the process of tunnel blasting construction, traditionally, the protection is generally achieved by assembling scaffolding and templates. During the whole construction process, it is necessary to disassemble and adjust the position multiple times according to different blasting positions, which is inconvenient to operate. The specific embodiments are as follows:

[0025] Embodiment 1

[0026] The shell box 20 is fixedly connected to the seat board 10. The top of the shell box 20 has an open port, so that the inner cavity of the shell box 20 communicates with the outside through the open port.

[0027] The inner cavity of the shell box 20 is connected with a lining board 30 through a displacement assembly 70. One side of the lining board 30 is hinged with a first baffle 40, and the lower side of the first baffle 40 is hinged with a second baffle 50;

[0028] The displacement assembly 70 can drive the lining board 30 to move upward and extend out of the inner cavity of the shell box 20. After the lining board 30 extends out of the inner cavity of the shell box 20, by laterally rotating the first baffle 40 and vertically rotating the second baffle 50, the shell box 20, the lining board 30, the first baffle 40 and the second baffle 50 form a shield in the length direction, which can block the flying stones generated during the tunnel blasting construction, effectively protect personnel, equipment and buildings, and improve safety;

[0029] After the blasting is completed, the first baffle 40 can be laterally rotated and the second baffle 50 can be vertically rotated, and the lining board 30 can be retracted into the shell box 20 through the displacement assembly 70 for quick storage, reducing the occupied space, facilitating subsequent tunnel construction, and when performing the next blasting, by moving the protection structure to the required position and unfolding it for use, there is no need to disassemble and assemble multiple times, with good convenience, effectively improving the efficiency of tunnel construction.

[0030] A cross bar is provided on the second baffle 50, and at least one set of push rods 52 is movably inserted through the cross bar. A connecting sleeve 21 is provided on the shell box 20, and the push rod 52 can be screwed to the connecting sleeve 21.

[0031] After the first baffle 40 and the second baffle 50 are unfolded, by rotating the push rod 52 to be screwed to the connecting sleeve 21, the positions of the first baffle 40 and the second baffle 50 are restricted, that is, to prevent the first baffle 40 and the second baffle 50 from rotating to cause occlusion and gaps, further ensuring the protection effect.

[0032] A plurality of moving wheels 11 are provided at the bottom of the seat plate 10. The moving wheels 11 are self-locking wheels. A groove 12 is provided on the seat plate 10 for placing counterweights. The plurality of moving wheels 11 provided can adjust the position as needed, and counterweights can be placed in the groove 12 to improve the stability of the entire protection structure.

[0033] Embodiment 2

[0034] Rubber layers 80 are provided on the front side walls of the shell box 20, the lining plate 30, the first baffle 40 and the second baffle 50. The rubber layers 80 provided play an energy absorption role, reducing the possibility of deformation of the shell box 20, the lining plate 30, the first baffle 40 and the second baffle 50 under the impact of flying stones, and extending the service life.

[0035] A pulling belt 51 is provided on the second baffle 50. A pulley 41 and a motor body 42 are provided on the first baffle 40. The output end of the motor body 42 is connected to a winding drum 43. The pulling belt 51 bypasses the pulley 41 and is connected to the winding drum 43. The motor body 42, the pulling belt 51 and the pulley 41 are all located on the side of the raw material close to the blasting. By driving the winding drum 43 to rotate to wind or loosen the pulling belt 51 by the motor body 42, the unfolding and folding of the second baffle 50 can be automatically controlled, without manual rotation. First, it improves the convenience. Second, the second baffle 50 is pulled by the pulling belt 51, which can prevent the second baffle 50 from rotating rapidly under the action of gravity and causing accidental collisions.

[0036] Embodiment 3

[0037] The displacement assembly 70 includes a hydraulic cylinder body 71 installed in the shell box 20. The movable rod of the hydraulic cylinder body 71 extends upward and is connected to a push plate 72. The push plate 72 is connected to the lining plate 30. A receiving cavity 31 is provided on the lining plate 30, and the receiving cavity 31 can accommodate the hydraulic cylinder body 71 therein.

[0038] The movable rod of the hydraulic cylinder body 71 extends into the receiving cavity 31 and is connected to the lining plate 30 through the push plate 72, so that when the lining plate 30 extends out of the inner cavity of the shell box 20, the movable rod of the hydraulic cylinder body 71 will not be exposed, playing an isolation and protection role for the hydraulic cylinder.

[0039] The first baffle 40 and the second baffle 50 are both provided with a cavity, and a third baffle 60 is slidably connected in each cavity. After the first baffle 40 and the second baffle 50 are unfolded, the third baffle 60 can be pulled out a certain length according to actual needs to adapt to the construction sites of different lengths.

[0040] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel blasting safety protection structure, characterized in that: It comprises a base plate (10) and a shell box (20), wherein a plurality of moving wheels (11) are arranged at the bottom of the base plate (10), the shell box (20) is fixedly connected to the base plate (10), and the top of the shell box (20) has an open opening; The inner cavity of the shell box (20) is connected to a lining plate (30) via a displacement assembly (70); a first baffle plate (40) is hingedly connected to one side of the lining plate (30); and a second baffle plate (50) is hingedly connected to the lower side of the first baffle plate (40); The second baffle (50) is provided with a horizontal bar, and at least one group of push rods (52) is movably provided on the horizontal bar. The shell box (20) is provided with a connecting sleeve (21), and the push rod (52) can be screwed to the connecting sleeve (21).

2. A tunnel blasting safety protection structure according to claim 1, characterized in that: The moving wheel (11) is a self-locking wheel, and the seat plate (10) is provided with a groove (12), and the groove (12) is used to place a counterweight.

3. A tunnel blasting safety protection structure according to claim 1, characterized in that: The front side walls of the housing box (20), the lining plate (30), the first baffle plate (40) and the second baffle plate (50) are all provided with a rubber layer (80).

4. A tunnel blasting safety protection structure according to claim 1, characterized in that: The second baffle (50) is provided with a pulley (41) and a motor body (42) are provided on the first baffle (40), the output end of the motor body (42) is connected to a reel (43), and the pulley (51) passes around the pulley (41) and is connected to the reel (43).

5. The tunnel blasting safety protection structure according to claim 1, characterized in that: The displacement assembly (70) comprises a hydraulic cylinder body (71) installed in the shell box (20), and a movable rod of the hydraulic cylinder body (71) extends upward and is connected to a push plate (72), and the push plate (72) is connected to the lining plate (30).

6. A tunnel blasting safety protection structure according to claim 5, characterized in that: The lining plate (30) is provided with a receiving chamber (31), and the receiving chamber (31) can receive the hydraulic cylinder body (71) therein.

7. The tunnel blasting safety protection structure according to claim 1, characterized in that: The first baffle plate (40) and the second baffle plate (50) are each provided with a cavity, and a third baffle plate (60) is slidably connected in each group of the cavities.

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