A safety protection structure for tunnel blasting in layered surrounding rock with reduced vibration diffusion range

Abstract

The present invention discloses a layered rock tunnel blasting safety protection structure for reducing the vibration diffusion range, comprising a bottom plate, a mounting hole and a vertical plate, the bottom plate is provided with a mounting hole inside, and the vertical plate is fixedly installed on the upper end of the bottom plate, the outer side of the threaded rod is sleeved with a fourth bevel gear, and the outer sides of the threaded rod and the output shaft are sleeved with two sets of motion blocks, and the lower end of the motion block is rotatably installed with a push rod, the lower end of the support plate is rotatably installed with a rotating plate, and a vibration sensor is nested and installed inside the front end of the support plate. In the layered rock tunnel blasting safety protection structure for reducing the vibration diffusion range, the driving motor causes the output shaft to rotate, and the output shaft causes the rotating rod to rotate synchronously, during which the motion blocks move away from each other and the rotating plate is pushed to rotate by the push rod, and the rotating plate is in close contact with the tunnel wall during the rotation, thereby effectively reducing the range of vibration diffusion inside the tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel blasting, in particular to a layered surrounding rock tunnel blasting safety protection structure capable of reducing the vibration diffusion range. Background Art

[0002] A tunnel is an engineering building buried inside the ground, often built between mountains. The main part of the tunnel consists of a tunnel body and a tunnel portal. During the construction of the tunnel, gunpowder is often used to blast the rocks inside the tunnel, thereby speeding up the construction of the tunnel. During the construction of the tunnel, a protective structure needs to be installed inside the tunnel to ensure the safety of the construction workers. However, the existing protective structure still has certain defects in use, such as:

[0003] The invention publication number CN216841759U discloses a protective structure for tunnel construction, which provides pressure to a pressure sensor through a top block in cooperation with an elastic layer and a first spring. According to the pressure, a motor in cooperation with a sprocket, a screw rod and a screw tube drives a movable plate and a structure above the movable plate to move, so that the protective structure is suitable for the tunnel size.

[0004] In the above document, the protective structure supports the top of the tunnel by means of support nails provided at the upper end of the movable plate. During the construction of the tunnel, it is necessary to blast the stones inside the tunnel. During the blasting process, vibrations will be generated, and the vibrations will affect the fixation of the stones inside the tunnel. Therefore, it is necessary to slow down the distance that the vibrations are transmitted inside the tunnel. The support top is fixedly installed at the upper end of the movable plate, which makes it difficult to reduce the vibration range inside the tunnel.

[0005] In response to the above problems, it is urgently necessary to carry out innovative designs based on the original protective structure. Summary of the invention

[0006] The object of the present invention is to provide a layered rock tunnel blasting safety protection structure that reduces the vibration diffusion range, so as to solve the problem raised in the above background technology that during the tunnel construction process, it is necessary to blast the stones inside the tunnel, vibration will be generated during the blasting process, and the supporting top is fixedly installed on the upper end of the movable plate, making it difficult to reduce the vibration range inside the tunnel.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a layered rock tunnel blasting safety protection structure for reducing the vibration diffusion range, comprising a base plate, a mounting hole and a vertical plate, the base plate is provided with a mounting hole inside, and the upper end of the base plate is fixedly mounted with the vertical plate, and the upper end of the vertical plate is fixedly mounted with a support plate, the lower end of the support plate is fixedly mounted with a driving motor, and the output end fixing rod of the driving motor is mounted with an output shaft, and the outer side of the output shaft is sleeved with a first bevel gear, the lower end of the support plate is rotatably mounted with a rotating rod and a threaded rod, and the front and rear ends of the rotating rod are respectively sleeved with a second bevel gear and a third bevel gear, the outer side of the threaded rod is sleeved with a fourth bevel gear, and the outer sides of the threaded rod and the output shaft are sleeved with two groups of moving blocks, and the lower end of the moving block is rotatably mounted with a push rod, the lower end of the support plate is rotatably mounted with a rotating plate, and a vibration sensor is nested and installed inside the front end of the support plate.

[0008] Preferably, a moving rod is rotatably mounted on the upper end of the bottom plate, and a support block is fixedly mounted on the upper end of the moving rod, and a clamping slot is provided at the lower end of the moving rod, a clamping piece is slidably mounted inside the bottom plate, and a support spring is fixedly mounted on one end of the clamping piece away from the moving rod, a moving part is slidably mounted inside the lower end of the vertical plate, and a return spring is fixedly mounted on the lower end of the moving part, and the upper end of the moving part is located inside the docking slot, and the docking slot is located at the lower end of the support block, and the support block can be limited on the ground surface by driving the support block to move through the moving rod, thereby improving the stability of the support of the safety protection structure.

[0009] Preferably, the output shaft and the rotating rod are symmetrically arranged front and back about the vertical center axis of the support plate, and the rotation directions of the outer threads on the left and right ends of the output shaft and the rotating rod are opposite. The rotation directions of the outer threads on the left and right ends of the output shaft and the rotating rod are opposite, which can make the moving blocks move relative to each other during the rotation of the output shaft and the rotating rod.

[0010] Preferably, the first bevel gear is meshedly connected with the second bevel gear, and the second bevel gear and the third bevel gear are both fixedly connected to the rotating rod, and the third bevel gear is meshedly connected with the fourth bevel gear. The meshing connection between the first bevel gear and the second bevel gear can drive the second bevel gear to rotate during the rotation of the first bevel gear.

[0011] Preferably, the push rod is rotatably connected to the moving block and the rotating plate respectively, and the moving block is threadedly connected to the output shaft and the rotating rod respectively. The push rod is rotatably connected to the moving block and the rotating plate respectively so that the moving block can push the rotating plate to rotate through the push rod.

[0012] Preferably, the clamping part forms an elastic structure with the base plate through the support spring, and the clamping part forms a clamping structure with the moving rod through the clamping groove. The clamping part forms an elastic structure with the base plate through the support spring and can push the clamping part to move inside the base plate through the support spring.

[0013] Preferably, the moving part forms an elastic structure with the vertical plate through a return spring, and the moving part forms a locking structure with the support block through a docking groove. The moving part forms an elastic structure with the vertical plate through the return spring and can push the moving part to move inside the vertical plate through the return spring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The layered rock tunnel blasting safety protection structure that reduces the vibration diffusion range, when the protection structure is vibrated, the driving motor will cause the output shaft to rotate, and the output shaft will cause the rotating rod to rotate synchronously. During this process, the moving blocks will move away from each other and push the rotating plate to rotate through the push rod. During the rotation of the rotating plate, it will be in close contact with the tunnel wall, thereby effectively reducing the range of vibration diffusion inside the tunnel;

[0016] 2. The layered surrounding rock tunnel blasting safety protection structure that reduces the vibration diffusion range can separate the moving part from the support block by pushing the moving part downward during the process of making the support block contact the ground. The rotating rod can then rotate and make the support block contact the ground. When the rotating rod rotates to a horizontal state, the clamping part will engage with the clamping groove, so that the support block and the moving rod can be limited, thereby further improving the stability of the support of the protection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the rotating rod of the present invention;

[0019] Figure 3 It is a schematic diagram of the top cross-sectional structure of the support plate of the present invention;

[0020] Figure 4 This is a schematic diagram of the top view of the support block of the present invention;

[0021] Figure 5 It is a schematic diagram of the front cross-sectional structure of the support block of the present invention.

[0022] In the figure: 1. bottom plate; 2. mounting hole; 3. vertical plate; 4. support plate; 5. drive motor; 6. output shaft; 7. first bevel gear; 8. second bevel gear; 9. rotating rod; 10. third bevel gear; 11. fourth bevel gear; 12. threaded rod; 13. moving block; 14. push rod; 15. rotating plate; 16. vibration sensor; 17. moving rod; 18. support block; 19. slot; 20. snap-in piece; 21. support spring; 22. moving part; 23. docking slot; 24. reset spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The present invention provides a technical solution: a layered rock tunnel blasting safety protection structure for reducing the vibration diffusion range, including a bottom plate 1, a mounting hole 2, a vertical plate 3, a support plate 4, a drive motor 5, an output shaft 6, a first bevel gear 7, a second bevel gear 8, a rotating rod 9, a third bevel gear 10, a fourth bevel gear 11, a threaded rod 12, a moving block 13, a push rod 14, a rotating plate 15, a vibration sensor 16, a moving rod 17, a support block 18, a slot 19, a clamping piece 20, a support spring 21, a moving piece 22, a docking slot 23 and a reset spring 24.

[0025] A mounting hole 2 is provided inside the bottom plate 1, and a vertical plate 3 is fixedly installed on the upper end of the bottom plate 1, and a support plate 4 is fixedly installed on the upper end of the vertical plate 3, a driving motor 5 is fixedly installed on the lower end of the support plate 4, and an output shaft 6 is installed on the output end fixing rod of the driving motor 5, and a first bevel gear 7 is sleeved on the outer side of the output shaft 6, a rotating rod 9 and a threaded rod 12 are rotatably installed on the lower end of the support plate 4, and a second bevel gear 8 and a third bevel gear 10 are sleeved on the front and rear ends of the rotating rod 9, respectively, a fourth bevel gear 11 is sleeved on the outer side of the threaded rod 12, and two sets of motion blocks 13 are sleeved on the outer sides of the threaded rod 12 and the output shaft 6, and the lower ends of the motion blocks 13 are sleeved. A push rod 14 is rotatably installed at the end, a rotating plate 15 is rotatably installed at the lower end of the support plate 4, and a vibration sensor 16 is nested inside the front end of the support plate 4, the output shaft 6 and the rotating rod 9 are symmetrically arranged front and back about the vertical center axis of the support plate 4, and the left and right ends of the output shaft 6 and the rotating rod 9 have opposite outer thread rotation directions, the first bevel gear 7 is meshed with the second bevel gear 8, and the second bevel gear 8 and the third bevel gear 10 are fixedly connected to the rotating rod 9, and the third bevel gear 10 is meshed with the fourth bevel gear 11, the push rod 14 is rotatably connected to the moving block 13 and the rotating plate 15 respectively, and the moving block 13 is threadedly connected to the output shaft 6 and the rotating rod 9 respectively.

[0026] according to Figure 1-3When using the layered surrounding rock tunnel blasting safety protection structure for reducing the vibration diffusion range, the protection structure is first installed at the position where work needs to be performed. After the safety protection structure is installed inside the tunnel, the construction personnel can perform normal blasting work. During the blasting work, vibration will be generated inside the tunnel. During this process, the protection structure will also be affected by the vibration and vibrate, and the vibration sensor 16 can sense the vibration at this time. At this time, the drive motor 5 will work and drive the first bevel gear 7 to rotate through the output shaft 6. During the rotation of the first bevel gear 7, the second bevel gear 8 can be used to rotate the rotating rod 9 and the third bevel gear 10. The third bevel gear 10 can rotate the threaded rod 12 through the fourth bevel gear 11. During the rotation of the threaded rod 12 and the output shaft 6, the moving blocks 13 can move away from each other. During the process of moving the moving blocks 13 away from each other, the push rod 14 will move, and the push rod 14 will push the rotating plate 15 to rotate and move away from the vertical plate 3. During this process, the rotating plate 15 can fit with the wall of the tunnel. Through the contact between the rotating plate 15 and the tunnel wall, the vibration diffusion range can be effectively reduced.

[0027] A moving rod 17 is rotatably installed on the upper end of the base plate 1, and a support block 18 is fixedly installed on the upper end of the moving rod 17, and a slot 19 is opened at the lower end of the moving rod 17. A clamping piece 20 is slidably installed inside the base plate 1, and a support spring 21 is fixedly installed on the end of the clamping piece 20 away from the moving rod 17. A moving part 22 is slidably installed inside the lower end of the vertical plate 3, and a return spring 24 is fixedly installed on the lower end of the moving part 22, and the upper end of the moving part 22 is located inside the docking groove 23, and the docking groove 23 is located at the lower end of the support block 18. The clamping piece 20 forms an elastic structure with the base plate 1 through the support spring 21, and the clamping piece 20 forms a clamping structure with the moving rod 17 through the slot 19, the moving part 22 forms an elastic structure with the vertical plate 3 through the return spring 24, and the moving part 22 forms a clamping structure with the support block 18 through the docking groove 23.

[0028] according to Figure 1 and Figure 4-5Before installing the safety protection structure, it is necessary to make the support block 18 contact with the ground. During this process, the construction personnel pull the moving part 22 downward and make the reset spring 24 contract. During this process, the moving part 22 will move away from the docking groove 23. After the moving part 22 is separated from the docking groove 23, the moving rod 17 can be rotated. During the rotation of the moving rod 17, the support block 18 can be rotated out from the inside of the vertical plate 3. During this process, the moving rod 17 will continue to rotate. When the moving rod 17 rotates to a horizontal state, the support block 18 will be in close contact with the ground. At this time, the compressed support spring 21 will expand and push the clamping part 20 into the inside of the clamping groove 19, thereby limiting the support block 18 and the moving rod 17 in this state. At this time, the support range of the protection structure can be expanded by the support block 18, thereby further improving the stability of the support of the protection structure and increasing the overall practicality.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A layered rock tunnel blasting safety protection structure for reducing the vibration diffusion range, comprising a bottom plate (1), a mounting hole (2) and a vertical plate (3), characterized in that: The bottom plate (1) has a mounting hole (2) formed inside, and a vertical plate (3) is fixedly mounted on the upper end of the bottom plate (1), and a support plate (4) is fixedly mounted on the upper end of the vertical plate (3), a drive motor (5) is fixedly mounted on the lower end of the support plate (4), and an output shaft (6) is mounted on the output end fixing rod of the drive motor (5), and a first bevel gear (7) is sleeved on the outer side of the output shaft (6), and a rotating rod (9) and a threaded rod (12) are rotatably mounted on the lower end of the support plate (4), and The front and rear ends of the rotating rod (9) are respectively sleeved with a second bevel gear (8) and a third bevel gear (10); the outer side of the threaded rod (12) is sleeved with a fourth bevel gear (11); the outer sides of the threaded rod (12) and the output shaft (6) are sleeved with two sets of moving blocks (13); a push rod (14) is rotatably mounted on the lower end of the moving block (13); a rotating plate (15) is rotatably mounted on the lower end of the support plate (4); and a vibration sensor (16) is nested and mounted inside the front end of the support plate (4); The push rod (14) is rotatably connected to the moving block (13) and the rotating plate (15), respectively, and the moving block (13) is threadedly connected to the output shaft (6). During the blasting process, vibrations are generated inside the tunnel, and the vibration sensor (16) can sense the vibrations. At this time, the drive motor (5) starts to work and drives the first bevel gear (7) to rotate through the output shaft (6). During the rotation of the first bevel gear (7), the rotating rod (9) and the third bevel gear (10) are rotated through the second bevel gear (8). The third bevel gear (10) rotates the threaded rod (12) through the fourth bevel gear (11). During the rotation of the threaded rod (12) and the output shaft (6), the moving blocks (13) move away from each other. During the movement of the moving blocks (13), the push rod (14) moves. The push rod (14) pushes the rotating plate (15) to rotate and move away from the vertical plate (3). During this process, the rotating plate (15) can fit with the wall of the tunnel.

2. A layered rock tunnel blasting safety protection structure for reducing vibration diffusion range according to claim 1, characterized in that: A moving rod (17) is rotatably mounted on the upper end of the base plate (1), a support block (18) is fixedly mounted on the upper end of the moving rod (17), and a clamping groove (19) is provided at the lower end of the moving rod (17); a clamping member (20) is slidably mounted inside the base plate (1), and a support spring (21) is fixedly mounted on one end of the clamping member (20) away from the moving rod (17); a moving member (22) is slidably mounted inside the lower end of the vertical plate (3), and a return spring (24) is fixedly mounted on the lower end of the moving member (22); the upper end of the moving member (22) is located inside the docking groove (23), and the docking groove (23) is located at the lower end of the support block (18), and the clamping member (20) forms a clamping structure with the moving rod (17) through the clamping groove (19).

3. The layered surrounding rock tunnel blasting safety protection structure for reducing the vibration diffusion range according to claim 1 is characterized by: The output shaft (6) and the threaded rod (12) are symmetrically arranged front and back about the vertical center axis of the support plate (4), and the outer threads of the output shaft (6) and the threaded rod (12) at the left and right ends have opposite rotation directions.

4. The layered surrounding rock tunnel blasting safety protection structure for reducing the vibration diffusion range according to claim 1 is characterized by: The first bevel gear (7) is meshedly connected with the second bevel gear (8), the second bevel gear (8) and the third bevel gear (10) are both fixedly connected with the rotating rod (9), and the third bevel gear (10) is meshedly connected with the fourth bevel gear (11).

5. The layered surrounding rock tunnel blasting safety protection structure for reducing the vibration diffusion range according to claim 2 is characterized by: The clamping piece (20) forms an elastic structure with the bottom plate (1) via a supporting spring (21).

6. The layered surrounding rock tunnel blasting safety protection structure for reducing the vibration diffusion range according to claim 2 is characterized by: The moving part (22) forms an elastic structure with the vertical plate (3) via a return spring (24), and the moving part (22) forms a snap-fit ​​structure with the support block (18) via a docking groove (23).

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