Tunnel blasting water spraying and dust falling device and method thereof

Abstract

The invention belongs to the technical field of water spraying and dust falling devices, and discloses a tunnel blasting water spraying and dust falling device which comprises a vehicle body, a water storage tank fixed to the vehicle body, a water spraying frame mechanism arranged on the vehicle body and located on the outer side of the water storage tank, and a pump fixed to the vehicle tail of the vehicle body. The water spraying frame mechanism comprises a bottom plate fixed to the vehicle body. Through cooperative design of the water spraying frame mechanism, distribution of sprayers can be adjusted, the device is used for adapting to cross sections of caverns of different sizes, the application range of water spraying and dust falling is wide, practicability is high, resources can be saved, the engineering cost can be reduced, and the problems that in the prior art, a movable dust falling frame is inconvenient to adjust according to the cross sections of the caverns of different sizes, and the working efficiency is high are solved. The problems that in the prior art, the application range of water spraying dust falling is small, adaptive movable dust falling frames need to be customized again for caverns of different sizes, practicability is low, resources are wasted, and the engineering cost is increased are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of water spraying and dust reduction devices, in particular to a tunnel blasting water spraying and dust reduction device and a method thereof. Background Art

[0002] A large number of underground tunnels are often used in water conservancy projects, hydropower projects, new energy projects (pumped storage power stations), mining projects, railway projects and highway projects. When blasting is used in tunnel construction, a large amount of dust will be generated, which not only seriously threatens the occupational health of construction workers, but also pollutes the environment. Usually, water spray dust reduction devices are needed to reduce dust and reduce environmental pollution caused by dust.

[0003] In the prior art, a Chinese patent discloses a water curtain dust reduction and smoke removal device for underground cave excavation (publication number: CN212563316U), whose main structure includes a mobile dust reduction frame, rollers and a base; two parallel bases are laid on the bottom edge of the cave along the direction of the cave, and each base is provided with a roller on the lower surface, and the mobile dust reduction frame is arranged across the two bases; a plurality of water outlets are provided on the mobile dust reduction frame, and one end of the mobile dust reduction frame is connected to a water source.

[0004] In actual use, the above-mentioned patent forms a water curtain in the cross-section of the entire cavern when the mobile dust reduction frame sprays water, which seals the blasting smoke and dust near the working surface of the cavern, and then conducts all-round spraying to reduce dust, thereby achieving rapid and efficient dust reduction. However, there are still corresponding disadvantages in actual use: the tunnel caverns produced by underground engineering excavation are large and small. When the above-mentioned patent is used, the mobile dust reduction frame is not convenient to adjust according to the cross-section of caverns of different sizes, and the application range of water spraying and dust reduction is small. For caverns of different sizes, it is necessary to re-customize the mobile dust reduction frame to adapt it, which has low practicality, wastes resources, and increases engineering costs. Therefore, it needs to be improved. Summary of the invention

[0005] Technical issues solved

[0006] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a tunnel blasting water spraying and dust reduction device and method, which has the advantages of convenient operation, easy adjustment of nozzle distribution, wide application range and high practicality. Through the coordinated design of structures such as the water spraying frame mechanism, the distribution of the nozzle can be adjusted to adapt to the cross-sections of caverns of different sizes. The water spraying and dust reduction have a wide application range and high practicality.

[0007] Technical Solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a tunnel blasting water spray dust suppression device, comprising a vehicle body, a water storage tank fixed on the vehicle body, a water spray frame mechanism arranged on the vehicle body and located outside the water storage tank, and a pump fixed at the rear of the vehicle body;

[0009] The water spray frame mechanism includes a bottom plate fixed on the vehicle body, a sliding frame moving near the front of the vehicle body on the upper surface of the bottom plate, a group of mounting rods extending to the rear of the vehicle body are equidistantly arranged on the sliding frame, a guide mechanism is arranged on the upper surface of the bottom plate near the rear of the vehicle body, a bellows is fixed between two adjacent mounting rods, a group of detachable spray heads are equidistantly installed on the outer surface of the bellows, a cylinder is symmetrically fixed on the upper surface of the bottom plate between the front of the vehicle body and the sliding frame, and a detection mechanism for detecting blockage of the spray head is arranged on the bellows and the mounting rod;

[0010] Among them, the output shaft end face of the cylinder is fixedly connected to the side wall of the sliding frame. When the cylinder is in operation, it drives the sliding frame to slide along the direction of the vehicle body. The two ends of two adjacent bellows are connected, the water inlet port of the pump is connected to the inner cavity of the water storage tank, and the water outlet port of the pump is connected to the bellows through a hose.

[0011] In the above technical solution, preferably, a group of grooves are equidistantly provided on the sliding frame, the inner cavities of the grooves are located on both sides of the mounting rod and two rotating shafts are movably installed through bearings, and the rotating shafts are movably connected to the side walls of the mounting rod through bearings.

[0012] In the above technical scheme, preferably, the detection mechanism includes a group of connecting shells equidistantly fixed on one side of the outer surface of the bellows and adapted to the position of the nozzle, the end of the connecting shell close to the nozzle penetrates into the inner cavity of the bellows, a slider is sealed and slidably provided in the inner cavity of the connecting shell, a push rod penetrating into the inner cavity of the bellows is movably mounted on the outer surface of the slider through a bearing, two air outlet holes are symmetrically provided on both sides of the inner cavity of the connecting shell near the middle of the push rod, an air pressure buzzer is connected to the end of the outer surface of the connecting shell away from the nozzle, an air supply pipe connected to the inner cavity of the connecting shell is arranged between the slider and the air pressure buzzer, and a gas supply mechanism is arranged on the mounting rod.

[0013] In the above technical solution, preferably, an annular block is sleeved on the outer surface of the push rod, a spiral groove is opened on the outer surface of the push rod, a protrusion matched with the spiral groove is fixedly installed on one side of the inner ring of the annular block, and the outer ring of the annular block is fixedly connected to the inner cavity of the connecting shell.

[0014] In the above technical solution, preferably, two placement grooves are symmetrically provided at one end of the connecting shell close to the nozzle, and two air leakage channels are symmetrically provided at one end of the connecting shell away from the nozzle, a push block is sealingly and slidably installed in the inner cavity of the placement groove, a support rod penetrating into the air leakage channel is fixedly installed on the surface of the push block, two exhaust through holes are provided on the outer surface of the support rod, and the inner cavities of the two exhaust through holes are connected, a contraction spring rod is fixedly connected to the side of the inner cavity of the connecting shell close to the air pressure buzzer, and one end of the contraction spring rod is fixedly connected to the surface of the slider.

[0015] In the above technical solution, preferably, a compression spring is movably sleeved on the outer surface of the support rod, and two ends of the compression spring are respectively fixedly connected to the inner cavity of the placement groove and the outer surface of the push block.

[0016] In the above technical solution, preferably, the air delivery mechanism includes a compression chamber and a diverter chamber provided on the mounting rod near the rear end of the vehicle body, a mounting groove provided on the mounting rod near one end of the front end of the vehicle body, a roller arranged in the mounting groove, two crankshafts symmetrically fixed on both sides of the roller, a sleeve movably sleeved on the crankshaft, a rubber block slidably installed in the inner cavity of the compression chamber, two connecting rods for connecting the sleeve with the rubber block, and a group of guide rails arranged on the inner side of the sliding frame; wherein, one end of the crankshaft is fixedly connected to one end of the rotating shaft, the outer ring of the roller is movably connected to the surface of the guide rail, a group of brackets are fixedly installed on the upper surface of the bottom plate, the surface of the guide rail is fixedly connected to the surface of the bracket, a one-way air outlet valve for introducing air into the diverter chamber is provided on one side of the inner cavity of the compression chamber, a one-way air inlet valve for introducing external air is connected to the inner cavity of the compression chamber near the one-way air outlet valve, and the inner cavity of the diverter chamber is connected to the air delivery pipes adjacent to the two sides of the mounting rod.

[0017] In the above technical solution, preferably, the guide mechanism includes a fixing frame fixed on the upper surface of the base plate near the rear end of the vehicle body, a group of hydraulic cylinders equidistantly fixed on the outside of the fixing frame, a guide shell fixed on the output shaft end of the hydraulic cylinder, and guide grooves symmetrically opened on both sides of the outer surface of the mounting rod; wherein a guide block movably connected to the inner cavity of the guide groove is fixedly installed in the inner cavity of the guide shell.

[0018] A method for using a tunnel blasting water spray dust reduction device, comprising the following steps:

[0019] S1: The front of the vehicle body faces outside the cave and the rear of the vehicle body faces inside the cave;

[0020] S2: Start the cylinder to drive the sliding frame to move toward the rear of the vehicle. When the sliding frame moves, it drives the mounting rod to move. The movement of the mounting rod drives the nozzle to move through the bellows. At the same time, under the guidance of the guide mechanism, the mounting rod expands outwards during movement. When the mounting rod expands, the bellows can be lengthened. The expansion degree of the mounting rod can be adjusted through the guide mechanism, so that the mounting rod can drive the bellows to move and adjust the distribution of the nozzles to adapt to the cross-sections of caverns of different sizes.

[0021] S3: During the movement of the mounting rod, the detection mechanism can be driven to operate, and the detection mechanism can automatically detect the blockage of the nozzle in the adjustment stage before spraying water to reduce dust, and issue a blockage warning to the operator;

[0022] S4: Start the pump to transport the water in the water tank to the bellows through the hose and spray it out from the nozzle to reduce dust.

[0023] Beneficial Effects

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention adopts the coordinated design of structures such as a water spray frame mechanism, and drives the sliding frame to move toward the rear of the vehicle through a cylinder. When the sliding frame moves, it drives the installation rod to move, and the movement of the installation rod drives the nozzle to move through the bellows. At the same time, under the guiding action of the guide mechanism, the installation rod is expanded outward during movement. When the installation rod expands, the bellows can be elongated, and the expansion degree of the installation rod can be adjusted through the guide mechanism, so that the installation rod can drive the bellows to move and adjust the distribution of the nozzle to adapt to the cross-section of caverns of different sizes. The application range of water spraying and dust reduction is wide, the practicability is high, resources can be saved, and the engineering cost can be reduced. The problem that the mobile dust reduction frame in the prior art is not convenient to adjust according to the cross-section of caverns of different sizes, the application range of water spraying and dust reduction is small, and for caverns of different sizes, it is necessary to re-customize the mobile dust reduction frame for adaptation, which has low practicability, wastes resources, and increases the engineering cost.

[0026] 2. The present invention adopts the coordinated design of the structures such as the sliding frame, the mounting rod, the bellows, the nozzle, and the detection mechanism. When the sliding frame moves to drive the mounting rod to move, the roller can rotate under the action of the guide rail, and the rotation of the roller drives the crankshaft to rotate. When the crankshaft rotates, the rubber block is driven to reciprocate through the sleeve shell and the connecting rod. When the rubber block moves, the air can be compressed into the diverter cavity under the action of the one-way air inlet valve and the one-way air outlet valve. The compressed air in the diverter cavity can be transported to the connecting shell through the air pipe. The compressed air pushes the slider to move, and the slider drives the push rod to move toward the spray hole of the nozzle. At the same time, when the push rod moves, the push rod can be rotated under the action of the protrusion and the spiral groove, which is convenient for the push rod to penetrate the nozzle. When the nozzle is blocked, a small amount of blockage inside it is cleaned. When the push rod penetrates the nozzle nozzle hole, the compressed air in the connecting shell is discharged through the air outlet. When the push rod cannot penetrate the nozzle hole of the nozzle, with the continuous input of compressed air, the pressure in the connecting shell continues to increase. When it reaches the set threshold of the air pressure buzzer, the air pressure buzzer can be activated to send out an alarm to remind the operator that the nozzle is blocked, which is convenient for the operator to accurately disassemble and replace the blocked nozzle, and it is convenient to protect the equipment. It solves the problem that it is inconvenient to detect and warn the blockage of the nozzle in the prior art, and the blocked nozzle is easy to reduce the dust reduction effect when spraying water to reduce dust, and the blockage causes the water pressure to be too high, which is easy to damage the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the water spray frame mechanism of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the guide rail and the bracket of the present invention;

[0030] Figure 4 for Figure 2 An enlarged schematic diagram of part A is shown;

[0031] Figure 5 It is a partial structural schematic diagram of the bellows, connecting shell and nozzle of the present invention;

[0032] Figure 6 It is a schematic cross-sectional structural diagram of the connecting shell of the present invention;

[0033] Figure 7 for Figure 6 An enlarged schematic diagram of portion B is shown;

[0034] Figure 8 for Figure 6 An enlarged schematic diagram of portion D is shown;

[0035] Fig. 9 It is a partial cross-sectional structural schematic diagram of the gas transmission mechanism of the present invention;

[0036] Fig.10 for Figure 2 An enlarged schematic diagram of part C is shown.

[0037] In the figure: 1, vehicle body; 2, water storage tank; 3, water spray frame mechanism; 31, bottom plate; 32, sliding frame; 321, groove; 322, rotating shaft; 33, mounting rod; 34, bellows; 35, nozzle; 36, cylinder; 37, hose; 4, pump; 5, guide mechanism; 51, fixed frame; 52, hydraulic cylinder; 53, guide shell; 54, guide groove; 6, detection mechanism; 61, connecting shell; 62, slider; 63, push rod; 6 31. annular block; 632. spiral groove; 633. convex block; 64. air outlet; 65. air pressure buzzer; 66. air pipe; 67. air release channel; 68. push block; 69. support rod; 610. exhaust through hole; 611. contraction spring rod; 7. air delivery mechanism; 71. compression chamber; 72. diversion chamber; 73. roller; 74. crankshaft; 75. casing; 76. rubber block; 77. connecting rod; 78. guide rail; 79. bracket. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figures 1 to 10 As shown, the present invention provides a tunnel blasting water spray dust suppression device, comprising a vehicle body 1, a water storage tank 2 fixed on the vehicle body 1, a water spray frame mechanism 3 arranged on the vehicle body 1 and located outside the water storage tank 2, and a pump 4 fixed at the rear of the vehicle body 1;

[0040] The water spray frame mechanism 3 includes a bottom plate 31 fixed on the vehicle body 1, a sliding frame 32 moving on the upper surface of the bottom plate 31 near the front of the vehicle body 1, a group of mounting rods 33 extending to the rear of the vehicle body 1 are equidistantly arranged on the sliding frame 32, a guide mechanism 5 is arranged on the upper surface of the bottom plate 31 near the rear of the vehicle body 1, a bellows 34 is fixed between two adjacent mounting rods 33, a group of detachable spray heads 35 are equidistantly installed on the outer surface of the bellows 34, a cylinder 36 is symmetrically fixed on the upper surface of the bottom plate 31 between the front of the vehicle body 1 and the sliding frame 32, and a detection mechanism 6 for detecting blockage of the spray head 35 is arranged on the bellows 34 and the mounting rod 33;

[0041] Among them, the output shaft end face of the cylinder 36 is fixedly connected to the side wall of the sliding frame 32. When the cylinder 36 is in operation, the sliding frame 32 is driven to slide along the direction of the vehicle body 1. The two ends of the two adjacent bellows 34 are connected, the water inlet port of the pump 4 is connected to the inner cavity of the water storage tank 2, and the water outlet port of the pump 4 is connected to the bellows 34 through a hose 37. A group of grooves 321 are equidistantly provided on the sliding frame 32. The inner cavity of the grooves 321 is located on both sides of the mounting rod 33 and has two rotating shafts 322 movably installed through bearings. The rotating shafts 322 are movably connected to the side walls of the mounting rod 33 through bearings.

[0042] When in use, the cylinder 36 drives the sliding frame 32 to move toward the rear of the vehicle. When the sliding frame 32 moves, it drives the mounting rod 33 to move. The movement of the mounting rod 33 drives the nozzle 35 to move through the bellows 34. At the same time, under the guiding action of the guide mechanism 5, the mounting rod 33 expands outward during movement. When the mounting rod 33 expands, the bellows 34 can be lengthened, and the expansion degree of the mounting rod 33 can be adjusted through the guide mechanism 5. The mounting rod 33 can drive the bellows 34 to move and adjust the distribution of the nozzle 35 to adapt to the cross-sections of caverns of different sizes. The water spraying and dust reduction has a wide range of applications and high practicality. It avoids the need to re-customize a suitable mobile dust reduction frame for caverns of different sizes, which can save resources and reduce engineering costs.

[0043] It should be noted that during the movement of the mounting rod 33, the detection mechanism 6 can be driven to operate. Through the detection mechanism 6, the blockage of the nozzle 35 can be automatically detected in the adjustment stage before spraying water to reduce dust, and a blockage warning reminder can be issued to the operator, so that the operator can accurately disassemble and replace the blocked nozzle 35, which is convenient for protecting the equipment. This avoids the problem in the prior art that it is inconvenient to detect and warn the blockage of the nozzle 35, the blocked nozzle 35 during water spraying to reduce dust can easily reduce the dust reduction effect, and the blockage causes the water pressure to be too high to cause damage to the equipment.

[0044] like Figure 5 , Figure 6 As shown, the detection mechanism 6 includes a group of connecting shells 61 equidistantly fixed on one side of the outer surface of the bellows 34 and adapted to the position of the nozzle 35. The end of the connecting shell 61 close to the nozzle 35 penetrates into the inner cavity of the bellows 34. A slider 62 is sealed and slidably provided in the inner cavity of the connecting shell 61. A push rod 63 penetrating into the inner cavity of the bellows 34 is movably installed on the outer surface of the slider 62 through a bearing. Two air outlet holes 64 are symmetrically provided on both sides of the inner cavity of the connecting shell 61 near the middle of the push rod 63. An air pressure buzzer 65 is connected to the end of the outer surface of the connecting shell 61 away from the nozzle 35. An air supply pipe 66 connected to the inner cavity of the connecting shell 61 and an air supply mechanism 7 arranged on the mounting rod 33 are provided.

[0045] When in use, the mounting rod 33 delivers compressed air to the connecting shell 61 through the air delivery mechanism 7 and the air delivery pipe 66 during movement. The compressed air pushes the slider 62 to move, and the slider 62 drives the push rod 63 to move toward the spray hole of the nozzle 35. When the push rod 63 penetrates the spray hole of the nozzle 35, the compressed air in the connecting shell 61 is discharged through the air outlet 64. When the push rod 63 cannot penetrate the spray hole of the nozzle 35, with the continuous input of compressed air, the pressure in the connecting shell 61 continues to increase. When it reaches the set threshold of the air pressure buzzer 65, the air pressure buzzer 65 can be activated to send an alarm prompt sound to remind the operator that the nozzle 35 is blocked.

[0046] like Figure 8 As shown, the outer surface of the push rod 63 is sleeved with an annular block 631, and the outer surface of the push rod 63 is provided with a spiral groove 632. A protrusion 633 adapted to the spiral groove 632 is fixedly installed on one side of the inner circle of the annular block 631, and the outer circle of the annular block 631 is fixedly connected to the inner cavity of the connecting shell 61.

[0047] When in use, when the push rod 63 moves, under the action of the protrusion 633 and the spiral groove 632, the push rod 63 can rotate, so that when the push rod 63 penetrates the spray hole of the nozzle 35, a small amount of blockage inside it can be cleaned, thereby reducing the replacement rate of the nozzle 35 and improving work efficiency.

[0048] like Figure 7 As shown, two placement grooves are symmetrically provided at one end of the connecting shell 61 close to the nozzle 35, and two air leakage channels 67 are symmetrically provided at one end of the connecting shell 61 away from the nozzle 35. A push block 68 is sealingly and slidably installed in the inner cavity of the placement groove, and a support rod 69 that penetrates into the air leakage channel 67 is fixedly installed on the surface of the push block 68. Two exhaust through holes 610 are provided on the outer surface of the support rod 69, and the inner cavities of the two exhaust through holes 610 are connected. A contraction spring rod 611 is fixedly connected to one side of the inner cavity of the connecting shell 61 close to the air pressure buzzer 65, and one end of the contraction spring rod 611 is fixedly connected to the surface of the slider 62, and a compression spring is movably sleeved on the outer surface of the support rod 69, and the two ends of the compression spring are respectively fixedly connected to the inner cavity of the placement groove and the outer surface of the push block 68.

[0049] During use, after high-pressure water flows into the bellows 34, the push block 68 is driven to move into the placement groove under the water pressure. When the push block 68 moves, it drives the support rod 69 to move, so that one end of the support rod 69 moves to the outside of the inner cavity of the air leakage channel 67. At this time, the compressed air in the connecting shell 61 can be discharged through the two exhaust holes 610, and then the slider 62 is driven to reset the push rod 63 under the pulling force of the contraction spring rod 611, and then the water in the bellows 34 is sprayed out through the nozzle 35.

[0050] like Figure 3 , Fig. 9 , Fig.10As shown, the gas delivery mechanism 7 includes a compression chamber 71 and a diversion chamber 72 opened on the mounting rod 33 near the rear of the vehicle body 1, a mounting groove opened on the mounting rod 33 near the front end of the vehicle body 1, a roller 73 arranged in the mounting groove, two crankshafts 74 symmetrically fixed on both sides of the roller 73, a sleeve 75 movably sleeved on the crankshaft 74, a rubber block 76 slidably installed in the inner cavity of the compression chamber 71, two connecting rods 77 for connecting the sleeve 75 with the rubber block 76, and a group of guide rails 78 arranged on the inner side of the sliding frame 32; wherein, the crankshaft One end of 74 is fixedly connected to one end of the rotating shaft 322, the outer ring of the roller 73 is movably connected to the surface of the guide rail 78, a group of brackets 79 are fixedly installed on the upper surface of the bottom plate 31, the surface of the guide rail 78 is fixedly connected to the surface of the bracket 79, a one-way air outlet valve for introducing air into the diverter chamber 72 is provided on one side of the inner cavity of the compression chamber 71, and a one-way air inlet valve for introducing external air is connected to the side of the inner cavity of the compression chamber 71 close to the one-way air outlet valve, and the inner cavity of the diverter chamber 72 is connected to the air supply pipe 66 adjacent to the two sides of the mounting rod 33.

[0051] When in use, when the sliding frame 32 moves and drives the mounting rod 33 to move, the roller 73 can rotate under the action of the guide rail 78, and the rotation of the roller 73 drives the crankshaft 74 to rotate. When the crankshaft 74 rotates, it drives the rubber block 76 to move back and forth through the sleeve 75 and the connecting rod 77. When the rubber block 76 moves, under the action of the one-way air inlet valve and the one-way air outlet valve, the air can be compressed into the diversion chamber 72, and the compressed air in the diversion chamber 72 can be transported to the connecting shell 61 through the air supply pipe 66.

[0052] like Figure 4 As shown, the guide mechanism 5 includes a fixing frame 51 fixed on the upper surface of the bottom plate 31 near the rear of the vehicle body 1, a group of hydraulic cylinders 52 equidistantly fixed on the outside of the fixing frame 51, a guide shell 53 fixed on the output shaft end of the hydraulic cylinder 52, and guide grooves 54 symmetrically opened on both sides of the outer surface of the mounting rod 33; wherein, a guide block movably connected to the inner cavity of the guide groove 54 is fixedly installed in the inner cavity of the guide shell 53.

[0053] When in use, when the sliding frame 32 moves to drive the installation rod 33 to move, the guide groove 54 interacts with the guide block in the guide shell 53, so that the installation rod 33 can expand outward to stretch the bellows 34, and the position of the guide shell 53 can be adjusted by the hydraulic cylinder 52, so that the expansion angle of the installation rod 33 can be adjusted, and then the installation rod 33 can drive the bellows 34 to move to adjust the distribution of the nozzle 35, so as to adapt to the cross-section of caverns of different sizes.

[0054] A method for using a tunnel blasting water spray dust reduction device, comprising the following steps:

[0055] S1: Make the front of the vehicle body 1 face outside the cave and the rear face inside the cave;

[0056] S2: Start the cylinder 36 to drive the sliding frame 32 to move toward the rear of the vehicle. When the sliding frame 32 moves, it drives the mounting rod 33 to move. Under the interaction between the guide groove 54 and the guide block in the guide shell 53, the mounting rod 33 can be expanded outward to stretch the bellows 34. The position of the guide shell 53 can be adjusted by the hydraulic cylinder 52, so that the expansion angle of the mounting rod 33 can be adjusted, and then the mounting rod 33 can drive the bellows 34 to move to adjust the distribution of the nozzles 35, so as to adapt to the cross-sections of caverns of different sizes.

[0057] S3: When the sliding frame 32 moves and drives the mounting rod 33 to move, the roller 73 can rotate under the action of the guide rail 78, and the rotation of the roller 73 drives the crankshaft 74 to rotate. When the crankshaft 74 rotates, it drives the rubber block 76 to move back and forth through the sleeve 75 and the connecting rod 77. When the rubber block 76 moves, the air can be compressed into the diverter chamber 72 under the action of the one-way air inlet valve and the one-way air outlet valve. The compressed air in the diverter chamber 72 can be transported to the connecting shell 61 through the air delivery pipe 66. The compressed air pushes the slider 62 to move, and the slider 62 drives the push rod 63 to move toward the spray hole of the nozzle 35. At the same time, the push rod When the push rod 63 moves, the push rod 63 can rotate under the action of the protrusion 633 and the spiral groove 632, so that the push rod 63 can penetrate the nozzle hole 35 to clean the small blockage inside. When the push rod 63 penetrates the nozzle hole 35, the compressed air in the connecting shell 61 is discharged through the air outlet 64. When the push rod 63 cannot penetrate the nozzle hole 35, the pressure in the connecting shell 61 continues to increase with the continuous input of compressed air. When it reaches the set threshold of the air pressure buzzer 65, the air pressure buzzer 65 can be activated to send an alarm to remind the operator that the nozzle 35 is blocked.

[0058] S4: Start the pump 4 to transport the water in the water tank 2 to the bellows 34 through the hose 37. When high-pressure water flows into the bellows 34, the push block 68 is driven to move into the placement groove under the water pressure. When the push block 68 moves, it drives the support rod 69 to move, so that one end of the support rod 69 moves to the outside of the inner cavity of the air release channel 67. At this time, the compressed air in the connecting shell 61 can be discharged through the two exhaust holes 610. After that, the slider 62 is driven to reset the push rod 63 under the pulling force of the contraction spring rod 611. Then, the water in the bellows 34 is sprayed out through the nozzle 35 to reduce dust.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] 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 tunnel blasting water spray dust suppression device, characterized in that: It comprises a vehicle body (1), a water storage tank (2) fixed on the vehicle body (1), a water spray frame mechanism (3) arranged on the vehicle body (1) outside the water storage tank (2), and a pump (4) fixed at the rear of the vehicle body (1); The water spray frame mechanism (3) comprises a bottom plate (31) fixed on the vehicle body (1), a sliding frame (32) movable on the upper surface of the bottom plate (31) near the front of the vehicle body (1), a group of mounting rods (33) extending to the rear of the vehicle body (1) are arranged at equal intervals on the sliding frame (32), a guide mechanism (5) is arranged on the upper surface of the bottom plate (31) near the rear of the vehicle body (1), a bellows (34) is fixed between two adjacent mounting rods (33), a group of detachable spray heads (35) are arranged at equal intervals on the outer surface of the bellows (34), a cylinder (36) is symmetrically fixed on the upper surface of the bottom plate (31) between the front of the vehicle body (1) and the sliding frame (32), and a detection mechanism (6) for detecting blockage of the spray head (35) is arranged on the bellows (34) and the mounting rod (33); The output shaft end face of the cylinder (36) is fixedly connected to the side wall of the sliding frame (32). When the cylinder (36) is in operation, the sliding frame (32) is driven to slide along the direction of the vehicle body (1). The two ends of two adjacent bellows (34) are connected, the water inlet port of the pump (4) is connected to the inner cavity of the water storage tank (2), and the water outlet port of the pump (4) is connected to the bellows (34) through a hose (37).

2. The tunnel blasting water spray dust suppression device according to claim 1, characterized in that: The sliding frame (32) is provided with a group of grooves (321) at equal intervals. The inner cavities of the grooves (321) are located on both sides of the mounting rod (33) and are provided with two rotating shafts (322) movably mounted thereon via bearings. The rotating shafts (322) are movably connected to the side walls of the mounting rod (33) via bearings.

3. The tunnel blasting water spray dust suppression device according to claim 2, characterized in that: The detection mechanism (6) comprises a group of connecting shells (61) fixed at equal distances on one side of the outer surface of the bellows (34) and adapted to the position of the nozzle (35); one end of the connecting shell (61) close to the nozzle (35) penetrates into the inner cavity of the bellows (34); a slider (62) is sealed and slidably arranged in the inner cavity of the connecting shell (61); a push rod (63) penetrating into the inner cavity of the bellows (34) is movably mounted on the outer surface of the slider (62) through a bearing; two air outlet holes (64) are symmetrically arranged on both sides of the inner cavity of the connecting shell (61) near the middle of the push rod (63); one end of the outer surface of the connecting shell (61) away from the nozzle (35) is connected to a pneumatic buzzer (65); an air supply pipe (66) connected to the inner cavity of the connecting shell (61) is arranged between the slider (62) and the pneumatic buzzer (65); and a gas supply mechanism (7) is arranged on the mounting rod (33).

4. The tunnel blasting water spray dust suppression device according to claim 3, characterized in that: The outer surface of the push rod (63) is sleeved with an annular block (631), and the outer surface of the push rod (63) is provided with a spiral groove (632). A protrusion (633) adapted to the spiral groove (632) is fixedly installed on one side of the inner ring of the annular block (631), and the outer ring of the annular block (631) is fixedly connected to the inner cavity of the connecting shell (61).

5. The tunnel blasting water spraying and dust suppression device according to claim 4, characterized in that: Two placement grooves are symmetrically formed at one end of the connection shell (61) close to the nozzle (35), and two air leakage channels (67) are symmetrically formed at one end of the connection shell (61) away from the nozzle (35). A push block (68) is sealingly and slidably installed in the inner cavity of the placement groove. A support rod (69) penetrating into the air leakage channel (67) is fixedly installed on the surface of the push block (68). Two exhaust through holes (610) are formed on the outer surface of the support rod (69), and the inner cavities of the two exhaust through holes (610) are connected. A contraction spring rod (611) is fixedly connected to one side of the inner cavity of the connection shell (61) close to the air pressure buzzer (65), and one end of the contraction spring rod (611) is fixedly connected to the surface of the slider (62).

6. The tunnel blasting water spray dust suppression device according to claim 5, characterized in that: A compression spring is movably sleeved on the outer surface of the support rod (69), and two ends of the compression spring are respectively fixedly connected to the inner cavity of the placement groove and the outer surface of the push block (68).

7. The tunnel blasting water spraying and dust suppression device according to claim 6, characterized in that: The gas delivery mechanism (7) comprises a compression chamber (71) and a flow distribution chamber (72) provided on the mounting rod (33) near the rear end of the vehicle body (1), a mounting groove provided on the mounting rod (33) near the front end of the vehicle body (1), a roller (73) arranged in the mounting groove, two crankshafts (74) symmetrically fixed on both sides of the roller (73), a sleeve (75) movably sleeved on the crankshaft (74), a rubber block (76) slidably mounted in the inner cavity of the compression chamber (71), two connecting rods (77) for connecting the sleeve (75) and the rubber block (76), and a group of guide rails (78) arranged on the inner side of the sliding frame (32); wherein One end of the crankshaft (74) is fixedly connected to one end of the rotating shaft (322), the outer ring of the roller (73) is movably connected to the surface of the guide rail (78), a group of brackets (79) are fixedly installed on the upper surface of the bottom plate (31), the surface of the guide rail (78) is fixedly connected to the surface of the bracket (79), a one-way air outlet valve for introducing air into the diverter chamber (72) is provided on one side of the inner cavity of the compression chamber (71), a one-way air inlet valve for introducing external air is connected to the side of the inner cavity of the compression chamber (71) close to the one-way air outlet valve, and the inner cavity of the diverter chamber (72) is connected to the air supply pipe (66) located adjacent to the two sides of the mounting rod (33).

8. The tunnel blasting water spraying and dust suppression device according to claim 7, characterized in that: The guide mechanism (5) comprises a fixing frame (51) fixed on the upper surface of the bottom plate (31) near the rear end of the vehicle body (1), a group of hydraulic cylinders (52) fixed at equal distances on the outside of the fixing frame (51), a guide shell (53) fixed on the output shaft end of the hydraulic cylinder (52), and guide grooves (54) symmetrically arranged on both sides of the outer surface of the mounting rod (33); wherein a guide block movably connected to the inner cavity of the guide groove (54) is fixedly installed in the inner cavity of the guide shell (53).

9. The method for using the tunnel blasting water spray dust suppression device according to claim 1, characterized in that: The usage steps include the following: S1: The front of the vehicle body (1) is directed toward the outside of the cave and the rear of the vehicle body (1) is directed toward the inside of the cave; S2: Start the cylinder (36) to drive the sliding frame (32) to move toward the rear of the vehicle. When the sliding frame (32) moves, it drives the mounting rod (33) to move. The movement of the mounting rod (33) drives the nozzle (35) to move through the bellows (34). At the same time, under the guidance of the guide mechanism (5), the mounting rod (33) expands outwards during movement. When the mounting rod (33) expands, the bellows (34) can be elongated. The expansion degree of the mounting rod (33) can be adjusted through the guide mechanism (5), so that the mounting rod (33) drives the bellows (34) to move and adjust the distribution of the nozzle (35) to adapt to the cross-sections of caverns of different sizes. S3: During the movement of the mounting rod (33), the detection mechanism (6) can be driven to operate, and the detection mechanism (6) can automatically detect the blockage of the nozzle (35) during the adjustment stage before spraying water to reduce dust, and issue a blockage warning to the operator; S4: The pump (4) is started to operate, and the water in the water storage tank (2) is transported to the bellows (34) through the hose (37) and sprayed out by the nozzle (35) to reduce dust.

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