Variable frequency dry-wet comprehensive sealing and dust removal vehicle for tunnel construction

Abstract

The present application relates to the technical field of tunnel dust removal, and discloses a variable-frequency dry-wet comprehensive closed dust removal vehicle for tunnel construction, which comprises a truck and a carriage installed on the truck, a filter cartridge dust remover is embeddedly installed at the upper end of the carriage, an ash collecting bin mechanism is arranged at the lower end of the filter cartridge dust remover, a dust cleaning mechanism and a spraying assembly are sequentially installed from front to back at the upper end of the inner side of the filter cartridge dust remover, and a variable-frequency fan is installed at the inner side of each air outlet pipe. The truck, the variable-frequency fan and the filter cartridge dust remover can remove dust during movement, the position of different filter cartridges and air inlets can be changed through the variable-position filter cartridge assembly, so that each filter cartridge can be fully utilized, dust removal efficiency is maximized, small particle dust can be captured through the spraying assembly, dust removal effect is further improved, dust can be collected through the ash collecting bin mechanism, and the collected dust can be poured out, automatic ash unloading is realized, and convenience and speed are achieved.

Description

Technical Field

[0001] This invention relates to the field of tunnel dust removal technology, specifically a variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction. Background Technology

[0002] Drill-and-blast method is widely used in tunnel mining; however, a large amount of dust is generated during the drilling, blasting, shotcreting, and slag transportation processes, especially the respirable dust which can cause fatal harm to the human body; therefore, dust control during construction is particularly important, which requires the use of dust removal equipment.

[0003] A Chinese patent discloses a novel tunnel dust removal vehicle (authorization announcement number CN211900676U). This patented technology solves the problems of traditional dust collectors being bulky and difficult to move. It allows the dust removal vehicle to reach appropriate locations, improving dust removal efficiency. The suction cylinders can be adjusted according to site conditions to ensure dust removal efficiency, significantly reducing dust concentration and ensuring the work efficiency of construction personnel. However, it cannot guarantee that each suction cylinder will be fully utilized, and it does not automatically unload ash from those cylinders. Summary of the Invention

[0004] The purpose of this invention is to provide a variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A variable frequency integrated wet and dry dust collection vehicle for tunnel construction includes a truck and a cargo box mounted on the truck. An air inlet pipe is located at the center of the front end of the cargo box, and an air outlet pipe is located at the upper rear end of the cargo box. A door is rotatably connected to one end of the cargo box via a hinge, and a hydraulic cylinder is rotatably connected between the cargo box and the door. A cartridge dust collector is embedded in the upper part of the cargo box, and a dust collection bin mechanism is located at the lower end of the cartridge dust collector. Cleaning devices are installed sequentially from front to back on the upper inner side of the cartridge dust collector. The mechanism and spray assembly include a variable frequency fan installed inside each of the air outlet ducts, and a dust concentration sensor installed in front of the variable frequency fan; the cartridge dust collector includes a square cover and a horn cover fixed to the lower end of the square cover, an air inlet is provided on the front side of the horn cover, and a dust discharge valve is installed at the lower end of the horn cover, a box cover is installed on the upper end of the square cover, and a displacement cartridge assembly is provided at the lower end of the square cover inside the horn cover, and a sealing assembly is provided at the upper end of the displacement cartridge assembly inside the square cover.

[0007] As a further embodiment of the present invention: the displacement filter cartridge assembly includes an annular conveyor belt and a plurality of air outlet pipes evenly arranged on the outer side of the annular conveyor belt. A sealing ring is provided on the outer side of the upper end of each air outlet pipe, and a filter cartridge is fixedly connected to the lower end of the air outlet pipe. A third bearing seat is installed on the front and rear sides of the upper end of the air outlet pipe, and a first pulley set is installed on the lower end of the air outlet pipe. A displacement motor is installed on the front side of the upper end of the first pulley set, and an encoder is installed on the displacement motor.

[0008] As a further embodiment of the present invention: the square cover includes a square cover body, the inner side of the square cover body is provided with a plurality of air outlets and water inlets from front to back, and a plurality of air pipe holes and water pipe holes are provided on one side of the square cover body from front to back, a set of exhaust vents is provided at the rear end of the square cover body, and two sets of annular grooves are provided at the bottom end of the square cover body below the air outlets, and a partition plate is fixedly connected to the inner side of the square cover body between the water inlets and the air outlets.

[0009] As a further embodiment of the present invention: each of the air outlet pipes corresponds to an air outlet hole, and each of the air outlet pipes is slidably connected to the inner side of the corresponding air outlet hole, and the third bearing seat is installed at the lower end of the square cover.

[0010] As a further embodiment of the present invention: the sealing assembly includes several rotating cover plates, and a rotating shaft is fixedly connected to one side of the lower end of each rotating cover plate. A third pulley set is installed between two adjacent rotating shafts, and a second pulley set is installed at the lower end of one of the rotating shafts. A rotary motor is installed on the front side of the lower end of the second pulley set. Each rotating cover plate is located at the upper end of the corresponding air outlet. The rotary motor is installed inside the square cover body. The second pulley set and the third pulley set are both located at the bottom end of the square cover body.

[0011] As a further embodiment of the present invention: the spray assembly includes a water tank, a water pump is installed at the upper end of the water tank, the output end of the water pump is connected to a main water pipe, a plurality of solenoid valves are installed at the upper end of the main water pipe, the output ends of the solenoid valves are all fixedly connected to branch water pipes, a plurality of atomizing nozzles are installed at the lower end of the branch water pipes, the water tank and the main water pipe are both installed on the outside of the carriage, the branch water pipes penetrate the inside of the corresponding water pipe holes, and the atomizing nozzles penetrate the inside of the water inlet holes.

[0012] As a further embodiment of the present invention: the ash collection hopper mechanism includes an ash collection hopper and two ball screws located on the lower sides of the front and rear ends of the ash collection hopper. An electric cylinder is rotatably connected to one side of the upper end of the ash collection hopper, and a connecting rod is rotatably connected to the other side of the lower end of the ash collection hopper. Each ball screw is meshed with a nut pair. Both ends of one ball screw are equipped with a second bearing seat. One end of the other ball screw is equipped with a second bearing seat, and the other end is equipped with a second motor. A second pulley assembly is installed between the two ball screws.

[0013] As a further embodiment of the present invention: the lower ends of the electric cylinder and the connecting rod are rotatably connected to the corresponding nut pairs, the second bearing seat and the second motor are both installed at the lower end of the carriage, and the upper end of the ash collection bin is directly opposite the lower end of the ash discharge valve.

[0014] As a further embodiment of the present invention: the dust removal mechanism includes an air compressor, the output end of which is fixedly connected to a main air pipe via a conduit, a plurality of pulse valves are installed at the upper end of the main air pipe, one end of each pulse valve is fixedly connected to a flexible hose, one end of each flexible hose is connected to a branch air pipe, a plurality of pulse nozzles are installed at the lower end of each branch air pipe, and a lifting cylinder is installed on the lower side of the front and rear ends of the connecting rod in each of the branch air pipes.

[0015] As a further embodiment of the present invention: the main air pipe and the air compressor are both installed on the outer side wall of the carriage, the hose passes through the inner side of the corresponding air pipe hole, and the pulse nozzle corresponds one-to-one with the filter cartridge.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This invention utilizes a truck, a variable frequency fan, and a cartridge dust collector to remove dust while in motion. The repositionable cartridge assembly allows for adjustments to the position of different cartridges relative to the air inlet, ensuring full utilization of each cartridge and maximizing dust removal efficiency. Simultaneously, it avoids excessive wear and tear on areas near the air inlet, maximizing the utilization of the repositionable cartridge assembly. A spray system captures small dust particles, further enhancing the dust removal effect. A dust collection hopper collects the dust and allows for automatic and convenient unloading. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction;

[0019] Figure 2 This is an exploded structural diagram of a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0020] Figure 3 This is an exploded view of the cartridge dust collector in a variable frequency dry and wet integrated enclosed dust collection vehicle used in tunnel construction.

[0021] Figure 4 This is a structural schematic diagram of a displacement filter cartridge assembly in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0022] Figure 5 This is a schematic diagram of the square cover in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0023] Figure 6 This is a schematic diagram of the sealing components in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0024] Figure 7 This is a cross-sectional schematic diagram of the sealing components and the displacement filter cartridge assembly in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0025] Figure 8 This is a partial structural diagram of the spraying assembly in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0026] Figure 9 This is a schematic diagram of the dust removal mechanism in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0027] Figure 10 This is a schematic diagram of the ash collection silo mechanism in a variable frequency dry and wet integrated enclosed dust removal vehicle used in tunnel construction.

[0028] In the diagram: 1. Truck; 2. Exhaust duct; 3. Variable frequency fan; 31. Dust concentration sensor; 4. Spray assembly; 41. Water tank; 42. Main water pipe; 43. Solenoid valve; 44. Branch water pipe; 45. Atomizing nozzle; 46. Water pump; 5. Cartridge dust collector; 51. Square cover; 511. Square cover body; 512. Air duct hole; 513. Water duct hole; 514. Exhaust hole; 515. Exhaust outlet; 516. Water inlet; 517. Annular chute; 518. Divider plate; 52. Box cover; 53. Ash discharge valve; 54. Horn cover; 55. Variable displacement cartridge assembly; 551. Filter cartridge; 552. Encoder; 553. Sealing ring; 554. Exhaust pipe; 555. Annular conveyor belt; 556. First belt. 557. Wheel set; 558. Positioning motor; 559. Third bearing housing; 56. Sealing assembly; 561. Rotating cover plate; 562. Rotary motor; 563. Second pulley set; 564. Rotating shaft; 565. Third pulley set; 57. Air inlet; 6. Dust removal mechanism; 61. Air compressor; 62. Main air pipe; 63. Pulse valve; 64. Branch air pipe; 65. Pulse nozzle; 66. Lifting cylinder; 67. Hose; 68. Connecting rod; 7. Carriage; 8. Air inlet pipe; 9. Dust collection hopper mechanism; 91. Dust collection hopper; 92. Connecting rod; 93. Second bearing housing; 94. Nut pair; 95. Ball screw; 96. Second motor; 97. Second pulley set; 98. Electric cylinder; 10. Hydraulic cylinder; 11. Box door. Detailed Implementation

[0029] Please see Figures 1-10 In this embodiment of the invention, a variable frequency dry and wet integrated enclosed dust collection vehicle for tunnel construction includes a truck 1 and a cargo box 7 mounted on the truck 1. An air inlet pipe 8 is provided at the middle of the front end of the cargo box 7, and a set of air outlet pipes 2 is provided at the upper part of the rear end of the cargo box 7. One end of the cargo box 7 is rotatably connected to a door 11 via a hinge. A hydraulic cylinder 10 is rotatably connected between the cargo box 7 and the door 11. A cartridge dust collector 5 is embedded in the upper end of the cargo box 7. A dust collection bin mechanism 9 is provided at the lower end of the cartridge dust collector 5. A dust cleaning mechanism 6 and a spray assembly 4 are sequentially installed from front to back on the upper inner side of the cartridge dust collector 5. A variable frequency fan 3 is installed inside each air outlet pipe 2. A dust concentration sensor 31 is installed on the front side of the variable frequency fan 3. The dust concentration sensor 31 monitors the dust concentration at the outlet duct 2 and adjusts the power of the variable frequency fan 3 according to the dust concentration, thereby reducing costs. The cartridge dust collector 5 includes a square cover 51 and a horn cover 54 fixed at the lower end of the square cover 51. An air inlet 57 is provided on the front side of the horn cover 54. A dust discharge valve 53 is installed at the lower end of the horn cover 54. A box cover plate 52 is installed at the upper end of the square cover 51. A displacement cartridge assembly 55 is provided at the lower end of the square cover 51 inside the horn cover 54. A sealing assembly 56 is provided at the upper end of the displacement cartridge assembly 55 inside the square cover 51.

[0030] exist Figure 3 , Figure 4 and Figure 7 In the process, the displacement filter cartridge assembly 55 includes an annular conveyor belt 555 and several air outlet pipes 554 evenly arranged on the outside of the annular conveyor belt 555. Each air outlet pipe 554 has a sealing ring 553 on its upper outer side. A filter cartridge 551 is fixedly connected to the lower end of the air outlet pipe 554. Third bearing seats 558 are installed on the front and rear sides of the upper end of the air outlet pipe 554. A first pulley group 556 is installed at the lower end of the air outlet pipe 554. A displacement motor 557 is installed on the front side of the upper end of the first pulley group 556. An encoder 552 is installed on the displacement motor 557. Based on the dust concentration at the tunnel site, after a certain period of operation, the displacement motor 557 is turned on. The displacement motor 557 is activated via the first pulley group 551. The wheel assembly 556 drives the annular conveyor belt 555 to rotate, and the annular conveyor belt 555 drives the filter cartridges 551 to move, so that the original position far away from the air inlet 57 is moved to the air inlet 57. This allows each filter cartridge 551 to be fully utilized, maximizing dust removal efficiency and avoiding severe clogging of the filter cartridges 551 near the air inlet 57, thus improving dust removal efficiency. When the displacement filter cartridge assembly 55 needs to be replaced, it can be replaced in one go, maximizing the utilization of the displacement filter cartridge assembly 55. The encoder 552 converts the angular displacement of the displacement motor 557 into linear displacement, thereby precisely controlling the belt stroke so that the front filter cartridge 551 can reach exactly below the corresponding air outlet 514.

[0031] exist Figure 5 In the middle, the square cover 51 includes a square cover body 511. Several air outlets 514 and water inlets 516 are respectively opened from front to back on the inner side of the square cover body 511. Several air pipe holes 512 and water pipe holes 513 are respectively opened from front to back on one side of the square cover body 511. A set of exhaust vents 515 is opened at the rear end of the square cover body 511. Two sets of annular grooves 517 are opened at the bottom end of the square cover body 511 below the air outlets 514. A partition plate 518 is fixedly connected to the inner side of the square cover body 511 between the water inlets 516 and the air outlets 514. Each exhaust pipe 554 corresponds to an exhaust hole 514. Each exhaust pipe 554 is slidably connected to the inner side of the corresponding exhaust hole 514. The third bearing seat 558 is installed at the lower end of the square cover 51. A filter screen is installed in the water inlet 516. Dust cannot enter the square cover body 511 through the filter cartridge. The square cover body 511 is divided into front and rear parts by the partition plate 518. The air filtered by the displacement filter cartridge assembly 55 enters the front side of the square cover body 511, and then enters the rear side of the square cover body 511 through the partition plate 518. Then, the rear side is sprayed with dust by the spray assembly 4.

[0032] exist Figure 6 and Figure 7 In the middle, the sealing assembly 56 includes several rotating cover plates 561. A rotating shaft 564 is fixedly connected to one side of the lower end of each rotating cover plate 561. A third pulley set 565 is installed between each two adjacent rotating shafts 564. A second pulley set 563 is installed at the lower end of one of the rotating shafts 564. A rotary motor 562 is installed on the front side of the lower end of the second pulley set 563. Each rotating cover plate 561 is located above the corresponding air outlet 514. The rotary motor 562 is installed inside the square cover body 511. The second pulley set 563 and the third pulley set 565 are both located at the bottom end of the square cover body 511. The rotary motor 562 drives the second pulley set 563 to rotate, and the second pulley set 563 drives the rotating shaft 564 and the third pulley set 565 to rotate. The rotating cover 561 rotates around the rotating shaft 564, allowing the air outlet 514 to be opened or closed. When the filter cartridge 551 and the air outlet pipe 554 move with the annular conveyor belt 555, the air outlet pipe 554 leaves the corresponding air outlet 514. At this time, the horn cover 54 and the square cover 51 are connected through the air outlet 514. To prevent dust in the horn cover 54 from entering the square cover 51 through the air outlet 514, the air outlet 514 needs to be blocked by the rotating cover 561. When the next air outlet pipe 554 moves to the position of the previous air outlet 514, the air outlet 514 is blocked again. At this time, the rotating cover 561 can be opened, and the gas in the horn cover 54 can enter the square cover 51 through the air outlet 514.

[0033] exist Figure 2 and Figure 8 In the spray assembly 4, a water tank 41 is included. A water pump 46 is installed at the upper end of the water tank 41. The output end of the water pump 46 is connected to a main water pipe 42. Several solenoid valves 43 are installed at the upper end of the main water pipe 42. The output ends of the solenoid valves 43 are all fixedly connected to branch water pipes 44. Several atomizing nozzles 45 are installed at the lower end of the branch water pipes 44. The water tank 41 and the main water pipe 42 are both installed on the outside of the carriage 7. The branch water pipes 44 pass through the inside of the corresponding water pipe holes 513, and the atomizing nozzles 45 pass through the water inlet holes 516. Inside the water tank 41, the water pump 46 draws out the spray water and it enters the main water pipe 42. The water flow rate is adjusted by the solenoid valve 43, and the spray water then enters the branch water pipe 44. Next, the spray water is sprayed from the lower end of the atomizing nozzle 45 into the square cover body 511 behind the partition plate 518 in an atomized form. This allows fine dust particles, such as those with a particle size of less than 0.7 μm, that cannot be filtered by the filter cartridge 551 to be captured by the atomized water and flow into the horn cover 54 through the water inlet 516.

[0034] exist Figure 1 , Figure 2 , Figure 3 and Figure 9 In the process, the dust removal mechanism 6 includes an air compressor 61. The output end of the air compressor 61 is fixedly connected to a main air pipe 62 via a conduit. Several pulse valves 63 are installed at the upper end of the main air pipe 62. A flexible hose 67 is fixedly connected to one end of each pulse valve 63. A branch air pipe 64 is connected to one end of each flexible hose 67. Several pulse nozzles 65 are installed at the lower end of each branch air pipe 64. A connecting rod 68 is connected between the branch air pipes 64. A lifting cylinder 66 is installed on the lower side of both the front and rear ends of the connecting rod 68. The main air pipe 62 and the air compressor 61 are both installed on the outer wall of the carriage 7. The flexible hoses 67 pass through the corresponding air pipe holes 512. Inside, pulse nozzles 65 correspond one-to-one with filter cartridges 551. When the rotating cover 561 is removed from the air outlet 514, the lifting cylinder 66 retracts, driving the connecting rod 68, branch pipe 64 and pulse nozzles 65 to descend together. The pulse nozzles 65 enter the air outlet pipe 554 from the air outlet 514. At this time, the air is compressed by the air compressor 61. After the compressed air enters the main air pipe 62, the pulse valve 63 is opened. After the compressed air passes through the branch pipe 64, it is sprayed out from the lower end of the pulse nozzles 65 and then enters the filter cartridge 551 from the air outlet pipe 554, blowing down the dust trapped on the outside of the filter cartridge 551, thereby improving the filtration efficiency of the filter cartridge 551.

[0035] exist Figure 1 , Figure 2 and Figure 10 The ash collection silo mechanism 9 includes an ash collection silo 91 and two ball screws 95 located on the lower sides of the front and rear ends of the ash collection silo 91. An electric cylinder 98 is rotatably connected to one side of the upper end of the ash collection silo 91, and a connecting rod 92 is rotatably connected to the other side of the lower end of the ash collection silo 91. Each ball screw 95 is engaged with a nut pair 94. One ball screw 95 has a second bearing seat 93 installed at both ends; the other ball screw 95 has a second bearing seat 93 installed at one end and a second motor 96 installed at the other end. A second pulley set 97 is installed between the two ball screws 95. The lower ends of the electric cylinder 98 and the connecting rod 92 rotate with the corresponding nut pair 94. The connection is made so that the second bearing seat 93 and the second motor 96 are both installed at the lower end of the carriage 7. The upper end of the ash collection bin 91 is directly opposite the lower end of the ash discharge valve 53. The second motor 96 drives the corresponding ball screw 95 to rotate. The ball screw 95 drives another ball screw 95 to rotate through the second pulley group 97, so that the nut pair 94 moves linearly along the corresponding ball screw 95, thereby driving the ash collection bin 91 to move along the ball screw 95. The ash collection bin 91 can be moved to a position close to the box door 11. After the box door 11 is opened by the hydraulic cylinder 10, the ash collection bin 91 is driven to rotate counterclockwise by the electric cylinder 98, so that the dust in the ash collection bin 91 can be automatically poured out.

[0036] The working principle of this invention is as follows: First, the truck 1 is driven into the tunnel, and then the variable frequency fan 3 is turned on. The variable frequency fan 3 generates negative pressure, which draws dust and air from the tunnel into the horn cover 54 through the air inlet pipe 8 and the air inlet 57. Some of the dust falls to the bottom of the horn cover 54 under the action of gravity, while the other part of the dust, along with the air, passes through the filter cartridge 551. The dust is trapped by the filter cartridge 551, while the air enters the inside of the filter cartridge 551 and enters the front of the square cover 51 through the air outlet pipe 554. Then, it passes through the partition plate 518 and enters the rear of the square cover body 511. Next, the water pump 46 is turned on, and the water pump 46 draws water from the water tank 41... The spray water is drawn out and enters the main water pipe 42. The water output is adjusted by the solenoid valve 43, and then the spray water enters the branch water pipe 44. Next, the spray water is sprayed from the lower end of the atomizing nozzle 45 in an atomized form onto the rear side of the inside of the square cover body 511. This allows fine dust particles, such as those with a particle size of less than 0.7 μm, that cannot be filtered by the filter cartridge 551 to be captured by the atomized water and flow into the horn cover 54 through the water inlet 516. The air filtered of dust is discharged into the tunnel through the exhaust port 515 and the air outlet 2. The dust concentration at the air outlet 2 is monitored by the dust concentration sensor 31, and the variable frequency fan 3 is adjusted according to the dust concentration to meet the needs of the operation.

[0037] When too much dust is trapped on the outside of the filter cartridge 551, affecting the filtration effect, the lifting cylinder 66 is activated. The lifting cylinder 66 retracts, driving the connecting rod 68, the branch pipe 64, and the pulse nozzle 65 to descend together. The pulse nozzle 65 enters the outlet pipe 554 from the air outlet 514. At this time, the air is compressed by the air compressor 61. After the compressed air enters the main air pipe 62, the pulse valve 63 is opened. After the compressed air passes through the branch pipe 64, it is sprayed out from the lower end of the pulse nozzle 65 and then enters the filter cartridge 551 from the outlet pipe 554, blowing down the dust trapped on the outside of the filter cartridge 551. The dust falls into the horn cover 54.

[0038] When a large amount of dust accumulates inside the horn cover 54 and needs to be unloaded, the unloading valve 53 is opened, and the dust falls into the dust collection bin 91. Then, the unloading valve 53 is closed, and the second motor 96 is turned on. The second motor 96 drives the corresponding ball screw 95 to rotate. This ball screw 95 drives another ball screw 95 to rotate through the second pulley group 97, causing the nut pair 94 to move linearly along the corresponding ball screw 95, thereby moving the dust collection bin 91 along the ball screw 95 and moving the dust collection bin 91 to a position close to the box door 11. Next, the hydraulic cylinder 10 is activated, and the hydraulic cylinder 10 extends to open the box door 11 upwards. Then, the electric cylinder 98 is activated, and the electric cylinder 98 drives the dust collection bin 91 to rotate counterclockwise. A trolley is placed below the box door 11, and the dust in the dust collection bin 91 can be automatically poured into the trolley, completing the unloading process, which is convenient and quick.

[0039] After working for a period of time, the rotary motor 562 is turned on, which drives the second pulley group 563 to rotate. The second pulley group 563 drives the rotating shaft 564 and the third pulley group 565 to rotate, so that the rotating cover plate 561 can rotate around the rotating shaft 564 as the center, and the rotating cover plate 561 seals the air outlet 514. Then, the positioner motor 557 is turned on, which drives the annular conveyor belt 555 to rotate through the first pulley group 556. The annular conveyor belt 555 drives the filter cartridge 551 to move, so that the position that was originally far away from the air inlet 57 is moved to the air inlet 57. This allows each filter cartridge 551 to be fully utilized, maximizes the dust removal efficiency, avoids severe clogging of the filter cartridge 551 near the air inlet 57, and improves the dust removal efficiency. When the positioner filter cartridge assembly 55 needs to be replaced, it can be replaced at once, maximizing the utilization of the positioner filter cartridge assembly 55.

[0040] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction, comprising a truck (1) and a cargo box (7) mounted on the truck (1), wherein an air inlet pipe (8) is provided at the middle of the front end of the cargo box (7), and an air outlet pipe (2) is provided at the upper part of the rear end of the cargo box (7), characterized in that, One end of the carriage (7) is rotatably connected to a door (11) via a hinge, and a hydraulic cylinder (10) is rotatably connected between the carriage (7) and the door (11). A cartridge dust collector (5) is embedded in the upper end of the carriage (7), and a dust collection bin mechanism (9) is provided at the lower end of the cartridge dust collector (5). A dust cleaning mechanism (6) and a spray assembly (4) are installed sequentially from front to back on the upper end of the inner side of the cartridge dust collector (5). A variable frequency fan (3) is installed on the inner side of each of the air outlet pipes (2), and a dust concentration sensor (31) is installed on the front side of the variable frequency fan (3). The cartridge dust collector (5) includes a square cover (51) and a horn cover fixed to the lower end of the square cover (51). (54) An air inlet (57) is provided on the front side of the horn cover (54), and an ash discharge valve (53) is installed at the lower end of the horn cover (54). A box cover plate (52) is installed at the upper end of the square cover (51), and a displacement filter cartridge assembly (55) for changing the position of different filter cartridges (551) and the air inlet (57) is provided at the lower end of the square cover (51) on the inner side of the horn cover (54). A sealing assembly (56) is provided at the upper end of the displacement filter cartridge assembly (55) on the inner side of the square cover (51). The sealing assembly (56) includes several rotating cover plates (561). The rotating cover plates (561) are used to block or open the air outlet (514) of the square cover (51).

2. The variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 1, characterized in that, The displacement filter cartridge assembly (55) includes an annular conveyor belt (555) and a plurality of air outlet pipes (554) evenly arranged on the outside of the annular conveyor belt (555). Each air outlet pipe (554) has a sealing ring (553) on the outer side of its upper end, and a filter cartridge (551) is fixedly connected to the lower end of the air outlet pipe (554). A third bearing seat (558) is installed on the front and rear sides of the upper end of the air outlet pipe (554), and a first pulley group (556) is installed on the lower end of the air outlet pipe (554). A displacement motor (557) is installed on the front side of the upper end of the first pulley group (556), and an encoder (552) is installed on the displacement motor (557).

3. The variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 1, characterized in that, The square cover (51) includes a square cover body (511). The inner side of the square cover body (511) is provided with a number of air outlets (514) and water inlets (516) from front to back. On one side of the square cover body (511), a number of air pipe holes (512) and water pipe holes (513) are provided from front to back. The rear end of the square cover body (511) is provided with a set of exhaust ports (515). At the bottom end of the square cover body (511), below the air outlets (514), two sets of annular grooves (517) are provided. A partition plate (518) is fixedly connected between the water inlets (516) and the air outlets (514) on the inner side of the square cover body (511).

4. A variable frequency integrated wet and dry dust removal vehicle for tunnel construction according to claim 2, characterized in that, Each of the aforementioned air outlet pipes (554) corresponds to an air outlet (514), and each of the aforementioned air outlet pipes (554) is slidably connected to the inner side of the corresponding air outlet (514), and the third bearing seat (558) is installed at the lower end of the square cover (51).

5. A variable frequency integrated wet and dry dust removal vehicle for tunnel construction according to claim 1, characterized in that, A rotating shaft (564) is fixedly connected to one side of the lower end of each of the rotating covers (561). A third pulley set (565) is installed between two adjacent rotating shafts (564). A second pulley set (563) is installed at the lower end of one of the rotating shafts (564). A rotary motor (562) is installed on the front side of the lower end of the second pulley set (563). Each rotating cover (561) is located at the upper end of the corresponding air outlet (514). The rotary motor (562) is installed inside the square cover body (511). The second pulley set (563) and the third pulley set (565) are both located at the bottom end of the square cover body (511).

6. A variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 1, characterized in that, The spray assembly (4) includes a water tank (41), a water pump (46) is installed at the upper end of the water tank (41), the output end of the water pump (46) is connected to a main water pipe (42), a number of solenoid valves (43) are installed at the upper end of the main water pipe (42), the output ends of the solenoid valves (43) are all fixedly connected to branch water pipes (44), a number of atomizing nozzles (45) are installed at the lower end of the branch water pipes (44), the water tank (41) and the main water pipe (42) are both installed on the outside of the carriage (7), the branch water pipes (44) penetrate the inside of the corresponding water pipe hole (513), and the atomizing nozzles (45) penetrate the inside of the water inlet hole (516).

7. A variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 1, characterized in that, The ash collection hopper mechanism (9) includes an ash collection hopper (91) and two ball screws (95) located on the lower side of the front and rear ends of the ash collection hopper (91). An electric cylinder (98) is rotatably connected to one side of the upper end of the ash collection hopper (91), and a connecting rod (92) is rotatably connected to the other side of the lower end of the ash collection hopper (91). Each ball screw (95) is meshed with a nut pair (94). A second bearing seat (93) is installed at both ends of one ball screw (95); a second bearing seat (93) is installed at one end of the other ball screw (95), and a second motor (96) is installed at the other end; a second pulley set (97) is installed between the two ball screws (95).

8. A variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 7, characterized in that, The lower ends of the electric cylinder (98) and the connecting rod (92) are rotatably connected to the corresponding nut pair (94). The second bearing seat (93) and the second motor (96) are both installed at the lower end of the carriage (7). The upper end of the ash collection bin (91) is directly opposite the lower end of the ash discharge valve (53).

9. A variable frequency integrated wet and dry dust removal vehicle for tunnel construction according to claim 1, characterized in that, The dust removal mechanism (6) includes an air compressor (61). The output end of the air compressor (61) is fixedly connected to a main air pipe (62) through a conduit. Several pulse valves (63) are installed at the upper end of the main air pipe (62). A hose (67) is fixedly connected to one end of each pulse valve (63). A branch pipe (64) is connected to one end of each hose (67). Several pulse nozzles (65) are installed at the lower end of each branch pipe (64). A connecting rod (68) is connected between several branch pipes (64). A lifting cylinder (66) is installed on the lower side of the front and rear ends of the connecting rod (68).

10. A variable frequency dry and wet integrated enclosed dust removal vehicle for tunnel construction according to claim 9, characterized in that, The main air pipe (62) and the air compressor (61) are both installed on the outer side wall of the carriage (7). The hose (67) passes through the inner side of the corresponding air pipe hole (512). The pulse nozzle (65) corresponds one-to-one with the filter cartridge (551).

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