A water spraying dust suppression device for tunnel construction

Abstract

The present invention discloses a water spraying and dust suppression device for tunnel construction, including a water tank. The outer wall of the bottom of the water tank is rotatably connected with movable wheels, and the number of the movable wheels is two groups. Rollers are arranged on both sides of the water tank, and a rotating shaft is fixedly connected to the inner wall of the circumference of the roller. Both ends of the rotating shaft pass through the inner walls on both sides of the water tank. In the present invention, when the connecting rod rotates in a reciprocating manner in both forward and reverse directions, it can drive the gear ring to rotate together, and the gear ring meshes with the tooth grooves formed on the outer wall of the ring plate, so as to drive the first nozzle to make a reciprocating arc motion counterclockwise, effectively expanding the dust suppression area of the first nozzle. At the same time, in the other set of spraying components, due to the setting of the first gear and the second gear disc, the direction change of the gear ring can be realized, so that the second nozzle can make a reciprocating arc motion clockwise, and can cooperate with the first nozzle, ensuring the dust suppression effect of the device on the interior of the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of dust reduction in tunnel construction, and more specifically, to a water spraying dust suppression device for tunnel construction. Background Technique

[0002] During tunnel construction, a large amount of dust and particulate matter will be generated due to operations such as excavation, blasting, and transportation. In order to avoid the impact of a large amount of dust on the normal construction of the tunnel and the health of the workers, a water spraying device is usually installed inside the tunnel to achieve effective dust suppression.

[0003] After retrieval, a Chinese utility model patent with the publication number CN221236739U discloses a tunnel construction dust reduction device, which relates to the technical field of tunnel dust reduction design. It includes a water storage tank. One end of the water storage tank is connected with a connecting pipe. The top of the fixed block is fixedly connected with a fixed column. A cross frame is arranged on one side of the fixed column. A pull rod is connected to the bottom of the cross frame. A spray head is installed on one side of the cross frame. One end of the cross frame is fixedly connected with a slider. A hydraulic cylinder is installed inside the fixed column. A hydraulic rod is connected inside the hydraulic cylinder.

[0004] Based on the comprehensive analysis of the existing technologies, it is found that the above patent still has the following deficiencies: When carrying out dust reduction work inside the tunnel, the dust reduction area is limited, resulting in a large number of dust reduction dead corners inside the tunnel. Generally, the dust reduction effect during tunnel construction is poor and cannot meet people's usage requirements. Therefore, there is an urgent need for a water spraying dust suppression device for tunnel construction to solve the above problems. Summary of the Invention

[0005] In view of the problems in the related technologies, the present invention proposes a water spraying dust suppression device for tunnel construction to overcome the above technical problems existing in the related prior arts.

[0006] The technical solution of the present invention is realized as follows:

[0007] A water spraying dust suppression device for tunnel construction includes a water tank. The outer wall of the bottom of the water tank is rotatably connected with movable wheels. The number of the movable wheels is two groups. Both sides of the water tank are provided with rollers. The inner wall of the circumference of the rollers is fixedly connected with a rotating shaft. Both ends of the rotating shaft pass through the inner walls on both sides of the water tank. One outer wall of the water tank is fixedly connected with a handle;

[0008] A partition is fixedly connected inside the water tank. The rotating shaft is located below the partition. A water pump is fixedly connected to the top outer wall of the partition. A water suction pipe is fixedly connected to the top of the water pump. One end of the water suction pipe extends to the top of the water tank;

[0009] A spray component is provided at the top of the water tank. The spray component is communicated with the water suction pipe, and the number of the spray components is two groups;

[0010] A transmission component and a driving component are provided on one side of the water tank, and the number of the driving components is two groups;

[0011] A water injection hole is opened on the outer wall of the top of the water tank, and a sealing plug is inserted into the water injection hole.

[0012] Further, the spray component includes a vertical pipe inserted on the circumferential outer wall of the water suction pipe. The top end of the vertical pipe is fixedly connected with a corrugated pipe. One end of the corrugated pipe away from the vertical pipe is fixedly connected with a water guide pipe. A spray pipe is inserted into one end of the water guide pipe away from the corrugated pipe, and the cross section of the spray pipe is arc-shaped.

[0013] Further, a first nozzle is inserted on the circumferential outer wall of a group of the spray pipes and is distributed in an arc shape at equal intervals. A baffle is rotatably connected to the circumferential outer wall of the first nozzle. The baffle is located directly above the first nozzle. A plurality of dispersion grooves are opened on the outer wall of the top of the baffle. One side outer wall of the baffle is fixedly connected with a spring, and one end of the spring away from the baffle is fixedly connected to the circumferential outer wall of the first nozzle.

[0014] Further, a second nozzle is inserted on the circumferential outer wall of the other spray pipe and is distributed in an arc shape at equal intervals. One end of the second nozzle is fixedly connected with a diffusion plate. A plurality of atomization plates are fixedly connected to the circumferential inner wall of the diffusion plate and are distributed in a circular shape at equal intervals. The cross section of the atomization plate is zigzag, and a plurality of atomization grooves are opened on one side outer wall of the atomization plate.

[0015] Further, the transmission component includes a driving wheel fixedly connected to the circumferential outer wall of the rotating shaft. A transmission belt is connected to the circumferential outer wall of the driving wheel in a transmission manner, and the transmission belt is connected to a driven wheel in a transmission manner.

[0016] Further, a fixed frame is fixedly connected to one side outer wall of the water tank. A first rotating column is fixedly connected to the circumferential inner wall of the driven wheel, and the first rotating column is rotatably connected to the fixed frame.

[0017] Further, the driving assembly includes a second helical gear fixedly connected to the circumferential outer wall of the first rotating column. A first helical gear is meshed with the circumferential outer wall of the second helical gear. One side outer wall of the first helical gear is fixedly connected to a first rotating rod. The end of the first rotating rod away from the first helical gear is rotatably connected to the fixed frame. A fixed sleeve is fixedly connected to the circumferential outer wall of the first rotating rod. A crank is fixedly connected to the circumferential outer wall of the fixed sleeve. One end of the crank away from the fixed sleeve is rotatably connected to a rotating seat. A connecting rod is fixedly connected to the circumferential outer wall of the rotating seat. One end of the connecting rod away from the rotating seat is rotatably connected to a connecting seat. One side of the connecting seat is fixedly connected to a gear ring.

[0018] Further, an L-shaped rod is fixedly connected to the circumferential outer wall of the nozzle. One end of the L-shaped rod away from the nozzle is fixedly connected to an annular plate. Tooth grooves are formed in the circumferential outer wall of the annular plate. The annular plate is meshed with the gear ring through the tooth grooves.

[0019] Further, a first gear disc is fixedly connected to the circumferential outer wall of a group of the first rotating rods. The first gear disc is meshed with a second gear disc. A cross plate is fixedly connected to one side outer wall of the water tank. The first rotating rod is rotatably connected to the cross plate. A second rotating column is fixedly connected to the inner circumferential wall of the second gear disc. The other fixed sleeve is fixedly connected to the circumferential outer wall of the second rotating column.

[0020] Further, a groove is formed in one side outer wall of the water tank. A positioning frame is fixedly connected to one side outer wall of the water tank. One ends of the two groups of the first rotating rods and the first rotating column are rotatably connected to the positioning frame.

[0021] Advantages of the present invention:

[0022] A water spraying and dust suppressing device for tunnel construction provided by the present invention, through the arranged spraying assembly, the first nozzle and the second nozzle. Since the number of the whole spraying assembly is two groups and they are arranged one in front of the other, when the front spraying assembly sprays water for dust suppression, the water flow sprays out from the first nozzle. Since the spray holes of the first nozzle are larger than those of the second nozzle, the droplets sprayed out by the first nozzle are relatively larger. And the first nozzle is located on the front side of the water tank. The droplets sprayed out by the first nozzle will first contact the air, so that the dust with larger particles can be adsorbed and settled. At the same time, during the process of the first nozzle spraying liquid, the droplets will first contact the dispersion groove opened on one side of the baffle. Through the dispersion groove, the droplets sprayed out by the first nozzle can be impacted, and then splashing will occur, expanding the water spraying and dust suppression area of the first nozzle. At the same time, the spring arranged on one side of the baffle can enable it to have good reset ability, so that the baffle can repeatedly impact the droplets sprayed out by the first nozzle. And for the second nozzle located at the rear, its spray holes are smaller than those of the first nozzle, so that the droplets sprayed out by the second nozzle can be smaller, and the air after dust suppression by the first nozzle can be effectively subjected to secondary dust suppression treatment to avoid that there is still a certain amount of fine dust in the air. And during the process of the liquid spraying out from the second nozzle, it will collide with the atomizing plate. Through the atomizing grooves opened on one side of the atomizing plate, the droplets can be cut smaller, further expanding the spraying area of the nozzle and improving the adsorption and dust suppression effect on the dust with small particle size.

[0023] A water spraying and dust suppressing device for tunnel construction provided by the present invention, through the arranged transmission assembly and driving assembly. During the process of the staff pushing the water tank to move, the rotating shaft can be driven to rotate through the rollers. During the rotation of the rotating shaft, the driving wheel can be driven to rotate. Through the driving wheel, the transmission belt and the driven wheel can be driven to rotate together. During the rotation of the driven wheel, the first rotating column can be driven to rotate. When the first rotating column rotates, the second helical gear can do circular motion. And both sides of the second helical gear are meshed with the first helical gears, so that the second helical gear and the first rotating rod can be driven to rotate. During the rotation of the first rotating rod, the fixed sleeve and the crank can be driven to rotate. And the crank is rotationally connected with the connecting rod, so that the forward and reverse reciprocating rotation of the connecting rod can be realized. When the connecting rod makes forward and reverse reciprocating rotation, the gear ring can be driven to rotate together. And the gear ring is meshed with the tooth grooves opened on the outer wall of the ring plate, so that the first nozzle can be driven to do reciprocating arc motion counterclockwise, effectively expanding the dust suppression area of the first nozzle. At the same time, in the other group of spraying assemblies, due to the arrangement of the first gear and the second gear disc, the direction change of the gear ring can be realized, so that the second nozzle can do reciprocating arc motion clockwise and can cooperate with the first nozzle, ensuring the dust suppression effect of the device on the interior of the tunnel. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic front view of the overall structure of the present invention.

[0026] Figure 2 For the present invention Figure 1 It is an enlarged schematic view of part A in the present invention.

[0027] Figure 3 For the present invention Figure 1 It is an enlarged schematic view of part B in the present invention.

[0028] Figure 4 It is a schematic rear view of the overall structure of the present invention.

[0029] Figure 5 For the present invention Figure 4 It is an enlarged schematic view of part C in the present invention.

[0030] Figure 6 It is a schematic view of the internal structure of the water tank of the present invention.

[0031] Figure 7 It is a schematic view of the structure of the drive component and the transmission component of the present invention.

[0032] Figure 8 For the present invention Figure 7 It is an enlarged schematic view of part D in the present invention.

[0033] In the figure:

[0034] 1. Water tank; 2. Roller; 3. Handle; 4. Movable wheel; 5. Spraying assembly; 5001. Spray pipe; 5002. L-shaped rod; 5003. Water guide pipe; 5004. Bellows; 5006. Ring plate; 5007. Tooth groove; 6. Water suction pipe; 7. Driving assembly; 7001. First rotating rod; 7002. First helical gear; 7003. Fixed sleeve; 7004. Crank; 7005. Rotating seat; 7006. Connecting rod; 7007. Groove; 7008. Gear ring; 7009. Second helical gear; 7010. Connecting seat; 8. First nozzle; 9. Baffle; 10. Spring; 11. Dispersion tank; 12. Fixed frame; 13. Driven wheel; 14. First rotating column; 15. Transmission belt; 16. Driving wheel; 17. Rotating shaft; 18. Sealing plug; 19. Second nozzle; 20. Diffusion plate; 21. Atomizing plate; 22. Atomizing tank; 23. Water pump; 24. Partition board; 25. Positioning frame; 26. First gear disk; 27. Horizontal board; 28. Second gear disk; 29. Second rotating column. Detailed implementation manners

[0035] 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 shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1-8 , a water spraying and dust suppression device for tunnel construction, including a water tank 1. The outer wall of the bottom of the water tank 1 is rotatably connected with two movable wheels 4. Both sides of the water tank 1 are provided with rollers 2. The inner wall of the circumference of the roller 2 is fixedly connected with a rotating shaft 17. Both ends of the rotating shaft 17 pass through the inner walls on both sides of the water tank 1. One outer wall of the water tank 1 is fixedly connected with a handle 3;

[0037] A partition board 24 is fixedly connected inside the water tank 1. The rotating shaft 17 is located below the partition board 24. A water pump 23 is fixedly connected to the top outer wall of the partition board 24. The top of the water pump 23 is fixedly connected with a water suction pipe 6. One end of the water suction pipe 6 extends to the top of the water tank 1;

[0038] A spraying assembly 5 is arranged on the top of the water tank 1. The spraying assembly 5 is communicated with the water suction pipe 6. The number of the spraying assemblies 5 is two. When the staff needs to carry out dust reduction and suppression work inside the tunnel, the device can be first moved into the tunnel through the rollers 2 and the movable wheels 4, and at the same time, the water pump 23 is started. The water pump 23 can quickly pump the clear water inside the water tank 1 into the water suction pipe 6. As the clear water in the water suction pipe 6 continuously surges in, the clear water will be sprayed out through the two spraying assemblies 5, so as to realize the dust reduction work for tunnel construction;

[0039] On one side of the water tank 1, a transmission component and a driving component 7 are provided, and the number of the driving components 7 is two groups;

[0040] On the outer wall of the top of the water tank 1, a water injection hole is opened, and a sealing plug 18 is inserted into the inside of the water injection hole.

[0041] Preferably, the spraying component 5 includes a vertical pipe inserted on the circumferential outer wall of the water suction pipe 6. The top end of the vertical pipe is fixedly connected with a corrugated pipe 5004. One end of the corrugated pipe 5004 away from the vertical pipe is fixedly connected with a water guide pipe 5003. One end of the water guide pipe 5003 away from the corrugated pipe 5004 is inserted with a spray pipe 5001. The cross section of the spray pipe 5001 is arc-shaped. A first nozzle 8 is inserted on the circumferential outer wall of a group of spray pipes 5001 and is distributed in an arc at equal intervals. A baffle 9 is rotatably connected to the circumferential outer wall of the first nozzle 8. The baffle 9 is located directly above the first nozzle 8. A plurality of dispersion grooves 11 are opened on the top outer wall of the baffle 9 and are distributed at equal intervals. A spring 10 is fixedly connected to one outer wall of the baffle 9. One end of the spring 10 away from the baffle 9 is fixedly connected to the circumferential outer wall of the first nozzle 8. The number of the whole spraying component 5 is two groups, and they are arranged one in front and one behind. When the spraying component 5 in the front sprays water for dust reduction, the water flow sprays out from the first nozzle 8. Since the spray holes of the first nozzle 8 are larger than those of the second nozzle 19, the droplets sprayed out by the first nozzle 8 are relatively larger. And the first nozzle 8 is located on the front side of the water tank 1. The droplets sprayed out by the first nozzle 8 will first contact the air, so that the dust with larger particles can be adsorbed and settled. At the same time, during the process of the first nozzle 8 spraying liquid, the droplets will first contact the dispersion grooves 11 opened on one side of the baffle 9. Through the dispersion grooves 11, the droplets sprayed out by the first nozzle 8 can be impacted, and then splashing will occur, expanding the dust reduction area of the first nozzle 8 for spraying water. At the same time, the spring 10 arranged on one side of the baffle 9 enables it to have good reset ability, so that the baffle 9 can repeatedly impact the droplets sprayed out by the first nozzle 8.

[0042] Preferably, a second nozzle 19 is inserted on the circumferential outer wall of the other spray pipe 5001 and is distributed in an arc at equal intervals. One end of the second nozzle 19 is fixedly connected with a diffusion plate 20. The inner circumferential wall of the diffusion plate 20 is fixedly connected with a plurality of atomization plates 21 distributed in a circle at equal intervals. The cross section of the atomization plate 21 is zigzag. A plurality of atomization grooves 22 are opened on one outer wall of the atomization plate 21 and are distributed at equal intervals. The spray holes of the second nozzle 19 at the back are smaller than those of the first nozzle 8, so that the droplets sprayed out by the second nozzle 19 can be smaller, and the air after dust reduction by the first nozzle 8 can be effectively subjected to secondary dust reduction treatment to avoid that there is still a certain amount of fine dust in the air. And during the process of the liquid spraying out from the second nozzle 19, it will collide with the atomization plate 21. Through the atomization grooves 22 opened on one side of the atomization plate 21, the droplets can be cut into smaller ones, further expanding the spraying area of the nozzle and improving the adsorption and dust reduction effect on the dust with small particle size.

[0043] Preferably, the transmission assembly includes a driving wheel 16 fixedly connected to the circumferential outer wall of the rotating shaft 17. A transmission belt 15 is drivingly connected to the circumferential outer wall of the driving wheel 16. The transmission belt 15 is drivingly connected to a driven wheel 13. A fixed frame 12 is fixedly connected to one outer wall of the water tank 1. A first rotating column 14 is fixedly connected to the circumferential inner wall of the driven wheel 13. The first rotating column 14 is rotatably connected to the fixed frame 12. During the process of the staff pushing the water tank 1 to move, the rotating shaft 17 can be driven to rotate by the roller 2. During the rotation of the rotating shaft 17, the driving wheel 16 can be driven to rotate. The transmission belt 15 and the driven wheel 13 can be driven to rotate together by the driving wheel 16. During the rotation of the driven wheel 13, the first rotating column 14 can be driven to rotate, so as to provide continuous power for the subsequent driving assembly 7 to work.

[0044] Preferably, the driving assembly 7 includes a second bevel gear 7009 fixedly connected to the circumferential outer wall of the first rotating column 14. A first bevel gear 7002 is meshed with the circumferential outer wall of the second bevel gear 7009. A first rotating rod 7001 is fixedly connected to one outer wall of the first bevel gear 7002. One end of the first rotating rod 7001 far from the first bevel gear 7002 is rotatably connected to the fixed frame 12. A fixed sleeve 7003 is fixedly connected to the circumferential outer wall of the first rotating rod 7001. A crank 7004 is fixedly connected to the circumferential outer wall of the fixed sleeve 7003. One end of the crank 7004 far from the fixed sleeve 7003 is rotatably connected to a rotating seat 7005. A connecting rod 7006 is fixedly connected to the circumferential outer wall of the rotating seat 7005. One end of the connecting rod 7006 far from the rotating seat 7005 is rotatably connected to a connecting seat 7010. A gear ring 7008 is fixedly connected to one side of the connecting seat 7010. An L-shaped rod 5002 is fixedly connected to the circumferential outer wall of the nozzle 5001. One end of the L-shaped rod 5002 far from the nozzle 5001 is fixedly connected to an annular plate 5006. Tooth grooves 5007 are formed on the circumferential outer wall of the annular plate 5006. The annular plate 5006 is meshed with the gear ring 7008 through the tooth grooves 5007. When the first rotating column 14 rotates, the second bevel gear 7009 can make a circular motion. And the first bevel gears 7002 are meshed with both sides of the second bevel gear 7009, so as to drive the second bevel gear 7009 and the first rotating rod 7001 to rotate. During the rotation of the first rotating rod 7001, the fixed sleeve 7003 and the crank 7004 can be driven to rotate. And the crank 7004 is rotatably connected to the connecting rod 7006, so as to realize the forward and reverse reciprocating rotation of the connecting rod 7006. When the connecting rod 7006 makes forward and reverse reciprocating rotation, the gear ring 7008 can be driven to rotate together. And the gear ring 7008 is meshed with the tooth grooves 5007 formed on the outer wall of the annular plate 5006, so as to drive the first nozzle 8 to make a reciprocating arc motion counterclockwise, effectively expanding the dust reduction area of the first nozzle 8.

[0045] Preferably, a first gear disc 26 is fixedly connected to the circumferential outer wall of a group of first rotating rods 7001. The first gear disc 26 meshes with a second gear disc 28. A cross plate 27 is fixedly connected to the outer wall of one side of the water tank 1. The first rotating rod 7001 is rotatably connected to the cross plate 27. A second rotating column 29 is fixedly connected to the circumferential inner wall of the second gear disc 28. Another fixed sleeve 7003 is fixedly connected to the circumferential outer wall of the second rotating column 29. In another set of spraying assemblies 5, due to the arrangement of the first gear and the second gear disc 28, the direction-changing operation of the gear ring 7008 can be realized, so that the second nozzle 19 can perform a reciprocating arc motion clockwise, and can cooperate with the first nozzle 8, ensuring the dust reduction effect of the device on the interior of the tunnel.

[0046] Preferably, a groove 7007 is formed in the outer wall of one side of the water tank 1 to prevent the connecting rod 7006 from being blocked by the water tank 1 during rotation. A positioning frame 25 is fixedly connected to the outer wall of one side of the water tank 1. One ends of the two groups of first rotating rods 7001 and the first rotating column 14 are rotatably connected to the positioning frame 25, ensuring the stable rotation of the two groups of first rotating rods 7001 and the first rotating column 14.

[0047] In summary, by means of the above technical solutions of the present invention, when the staff needs to perform dust reduction and suppression work on the interior of the tunnel, the device can be first moved into the tunnel through the rollers 2 and the movable wheels 4, and at the same time, the water pump 23 is started. Through the water pump 23, the clear water inside the water tank 1 can be quickly pumped into the water suction pipe 6. As the clear water in the water suction pipe 6 continuously surges in, the clear water will flow into the spray pipe 5001 through the corrugated pipe 5004 and the water guide pipe 5003. The clear water flowing into the spray pipe 5001 will be sprayed out from the first nozzle 8 and the second nozzle 19 respectively. The number of the entire spraying assemblies 5 is two groups, and they are arranged one in front of the other. When the spraying assembly 5 in the front performs water spraying for dust reduction, the water flow is sprayed out from the first nozzle 8. Since the spray holes of the first nozzle 8 are larger than those of the second nozzle 19, the droplets sprayed out by the first nozzle 8 are relatively larger. And the first nozzle 8 is located on the front side of the water tank 1. The droplets sprayed out by the first nozzle 8 will first contact the air, so that the dust with larger particles can be adsorbed and settled. At the same time, during the spraying process of the first nozzle 8, the droplets will first contact the dispersion groove 11 formed on one side of the baffle 9. Through the dispersion groove 11, the droplets sprayed out by the first nozzle 8 can be impacted, and then splashing will occur, expanding the water spraying and dust reduction area of the first nozzle 8. At the same time, the spring 10 arranged on one side of the baffle 9 enables it to have good reset ability, so that the baffle 9 can repeatedly impact the droplets sprayed out by the first nozzle 8;

[0048] The spray holes of the second spray head 19 located at the rear are smaller than those of the first spray head 8, so that the droplets sprayed by the second spray head 19 can be smaller, and the air after dust reduction by the first spray head 8 can be effectively subjected to secondary dust reduction treatment, avoiding that there is still a certain amount of fine dust in the air. And during the process of the liquid spraying out from the second spray head 19, it will collide with the atomization plate 21, and through the atomization grooves 22 opened on one side of the atomization plate 21, the droplets can be cut smaller, further expanding the spraying area of the spray head and improving the adsorption and dust reduction effect on small particle size dust.

[0049] During the process of the staff pushing the water tank 1 to move, the roller 2 can drive the rotating shaft 17 to rotate. During the rotation of the rotating shaft 17, the driving wheel 16 can be driven to rotate. Through the driving wheel 16, the transmission belt 15 and the driven wheel 13 can be driven to rotate together. During the rotation of the driven wheel 13, the first rotating column 14 can be driven to rotate. When the first rotating column 14 rotates, the second bevel gear 7009 can do circular motion, and both sides of the second bevel gear 7009 are engaged with the first bevel gear 7002, so that the second bevel gear 7009 and the first rotating rod 7001 can be driven to rotate. During the rotation of the first rotating rod 7001, the fixed sleeve 7003 and the crank 7004 can be driven to rotate, and the crank 7004 is rotatably connected with the connecting rod 7006, so that the forward and reverse reciprocating rotation of the connecting rod 7006 can be realized. When the connecting rod 7006 makes forward and reverse reciprocating rotation, the gear ring 7008 can be driven to rotate together, and the gear ring 7008 is engaged with the tooth groove 5007 opened on the outer wall of the ring plate 5006, so that the first spray head 8 can be driven to make a reciprocating arc motion counterclockwise, effectively expanding the dust reduction area of the first spray head 8. At the same time, in the other set of spraying components 5, due to the setting of the first gear and the second gear disc 28, the direction change of the gear ring 7008 can be realized, so that the second spray head 19 can make a reciprocating arc motion clockwise and can cooperate with the first spray head 8, ensuring the dust reduction effect of the device on the tunnel interior.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water spraying dust suppression device for tunnel construction, including a water tank (1), characterized in that, The outer wall of the bottom of the water tank (1) is rotatably connected with movable wheels (4). The number of the movable wheels (4) is two groups. Rollers (2) are arranged on both sides of the water tank (1). A rotating shaft (17) is fixedly connected to the inner circumferential wall of the roller (2). Both ends of the rotating shaft (17) pass through the inner walls on both sides of the water tank (1). A handle (3) is fixedly connected to the outer wall of one side of the water tank (1). A partition plate (24) is fixedly connected inside the water tank (1). The rotating shaft (17) is located below the partition plate (24). A water pump (23) is fixedly connected to the outer wall of the top of the partition plate (24). A water suction pipe (6) is fixedly connected to the top of the water pump (23). One end of the water suction pipe (6) extends to the top of the water tank (1). A spraying assembly (5) is arranged on the top of the water tank (1). The spraying assembly (5) is communicated with the water suction pipe (6). The number of the spraying assemblies (5) is two groups. The spraying assembly (5) includes a vertical pipe inserted on the outer circumferential wall of the water suction pipe (6). The top end of the vertical pipe is fixedly connected with a corrugated pipe (5004). One end of the corrugated pipe (5004) far away from the vertical pipe is fixedly connected with a water guide pipe (5003). A spray pipe (5001) is inserted at one end of the water guide pipe (5003) far away from the corrugated pipe (5004). The cross section of the spray pipe (5001) is arc-shaped. A group of first nozzles (8) are inserted on the outer circumferential wall of the spray pipe (5001) and are distributed in an arc shape at equal intervals. A baffle (9) is rotatably connected to the outer circumferential wall of the first nozzle (8). The baffle (9) is located directly above the first nozzle (8). A plurality of dispersion grooves (11) are arranged on the outer wall of the top of the baffle (9) at equal intervals. A spring (10) is fixedly connected to the outer wall of one side of the baffle (9). One end of the spring (10) far away from the baffle (9) is fixedly connected to the outer circumferential wall of the first nozzle (8). A group of second nozzles (19) are inserted on the outer circumferential wall of the other spray pipe (5001) and are distributed in an arc shape at equal intervals. One end of the second nozzle (19) is fixedly connected with a diffusion plate (20). A plurality of atomization plates (21) are fixedly connected to the inner circumferential wall of the diffusion plate (20) and are distributed in a circular shape at equal intervals. The cross section of the atomization plate (21) is zigzag. A plurality of atomization grooves (22) are arranged on the outer wall of one side of the atomization plate (21) at equal intervals. The two groups of spraying assemblies (5) are arranged one in front of the other, and the spray holes of the first nozzles (8) are larger than those of the second nozzles (19). A transmission assembly and a driving assembly (7) are arranged on one side of the water tank (1). The number of the driving assemblies (7) is two groups. A water injection hole is arranged on the outer wall of the top of the water tank (1). A sealing plug (18) is inserted into the water injection hole.

2. The water spraying and dust suppression device for tunnel construction according to claim 1, wherein The transmission assembly includes a driving wheel (16) fixedly connected to the outer circumferential wall of the rotating shaft (17). A transmission belt (15) is connected to the outer circumferential wall of the driving wheel (16) in a transmission manner. The transmission belt (15) is connected to a driven wheel (13) in a transmission manner.

3. The water spraying and dust suppression device for tunnel construction according to claim 2, wherein, One outer wall of the water tank (1) is fixedly connected with a fixed frame (12). The inner circumferential wall of the driven wheel (13) is fixedly connected with a first rotating column (14). The first rotating column (14) is rotatably connected with the fixed frame (12).

4. The water spraying and dust suppression device for tunnel construction according to claim 3, wherein, The driving assembly (7) includes a second bevel gear (7009) fixedly connected to the outer circumferential wall of the first rotating column (14). A first bevel gear (7002) is meshed with the outer circumferential wall of the second bevel gear (7009). One outer wall of the first bevel gear (7002) is fixedly connected with a first rotating rod (7001). One end of the first rotating rod (7001) far from the first bevel gear (7002) is rotatably connected with the fixed frame (12). A fixed sleeve (7003) is fixedly connected to the outer circumferential wall of the first rotating rod (7001). A crank (7004) is fixedly connected to the outer circumferential wall of the fixed sleeve (7003). One end of the crank (7004) far from the fixed sleeve (7003) is rotatably connected with a rotating seat (7005). A connecting rod (7006) is fixedly connected to the outer circumferential wall of the rotating seat (7005). One end of the connecting rod (7006) far from the rotating seat (7005) is rotatably connected with a connecting seat (7010). One side of the connecting seat (7010) is fixedly connected with a gear ring (7008).

5. The water spraying and dust suppression device for tunnel construction according to claim 4, characterized in that, An L-shaped rod (5002) is fixedly connected to the outer circumferential wall of the spray pipe (5001). One end of the L-shaped rod (5002) far from the spray pipe (5001) is fixedly connected with an annular plate (5006). Tooth grooves (5007) are formed on the outer circumferential wall of the annular plate (5006). The annular plate (5006) is meshed with the gear ring (7008) through the tooth grooves (5007).

6. The water spraying and dust suppression device for tunnel construction according to claim 5, characterized in that, A first gear disc (26) is fixedly connected to the outer circumferential wall of one group of the first rotating rods (7001). The first gear disc (26) is meshed with a second gear disc (28). A cross plate (27) is fixedly connected to one outer wall of the water tank (1). The first rotating rod (7001) is rotatably connected with the cross plate (27). A second rotating column (29) is fixedly connected to the inner circumferential wall of the second gear disc (28). The other fixed sleeve (7003) is fixedly connected to the outer circumferential wall of the second rotating column (29).

7. The water spraying and dust suppression device for tunnel construction according to claim 6, characterized in that, A groove (7007) is formed on one outer wall of the water tank (1). A positioning frame (25) is fixedly connected to one outer wall of the water tank (1). One ends of the two groups of the first rotating rods (7001) and the first rotating column (14) are rotatably connected with the positioning frame (25).

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