Novel pavement pit slot repairing machine

Abstract

The utility model relates to the technical field of road maintenance, in particular to a novel pavement pit slot repairing machine which comprises a transport vehicle, a stirring mechanism, a material distributing mechanism and a wind heating mechanism. The material distribution mechanism is arranged on the transport vehicle and is used for filling a pit slot with the stirred asphalt mixture, the air heating mechanism comprises a heating barrel, an electric heating resistance wire and an air blower, the heating barrel is arranged on the stirring mechanism, the electric heating resistance wire is arranged in the heating barrel, and the air blower is arranged in the heating barrel. The air blower is arranged on the stirring mechanism and is communicated with the heating barrel. The asphalt mixture heating device has the effects of improving the asphalt mixture heating efficiency and reducing the energy consumption.

Description

Technical Field

[0001] The present application relates to the technical field of highway maintenance, and in particular to a novel road pothole repairing machine. Background Art

[0002] At present, a large amount of asphalt is used in the construction of roads. However, the asphalt mixture is not mixed evenly during construction, the asphalt content is low, and the mineral aggregates cannot be effectively bonded. Under the pumping action of the tires of high-speed vehicles, finer aggregates are sucked out, resulting in local potholes; therefore, regular maintenance of roads is required.

[0003] A Chinese patent with authorization announcement number CN213709101U discloses a highway road pothole repair device, which includes a base plate, a universal wheel, a mixing box, a motor, a rotating rod, a stirring rod, an electric heating layer, a feeding pipe and a compaction roller. The base plate is slidably arranged on the ground through the universal wheel, the mixing box is arranged on the base plate, the motor is arranged on the mixing box, the rotating rod is rotatably arranged in the mixing box and is fixedly connected to the output shaft of the motor, the stirring rod is arranged on the rotating rod, the electric heating layer is arranged in the mixing box, the feeding pipe is arranged on the mixing box and is used for feeding, and the compaction roller is arranged on the base plate and is used for flattening the asphalt at the pothole; when repairing the highway pothole, the base plate moves to the position of the pothole through the universal wheel, and then the motor drives the rotating rod to rotate, and the rotating rod drives the stirring rod to rotate to stir the asphalt mixture, and at the same time the electric heating layer heats the asphalt mixture, and the stirred asphalt mixture is injected into the pothole through the feeding pipe, and then the compaction roller flattens the asphalt. However, during the heating process of the asphalt mixture, the heating area of ​​the electric heating layer is small, which results in a longer heating time and higher energy consumption for the asphalt mixture. Utility Model Content

[0004] In order to improve the heating efficiency of asphalt mixture and reduce energy consumption, the present application provides a new road pothole repair machine.

[0005] The present application provides a novel road pothole repair machine, which adopts the following technical solution:

[0006] A novel road pothole repairer comprises a transport vehicle, a stirring mechanism, a spreading mechanism and a wind-heating mechanism. The stirring mechanism is arranged on the transport vehicle and is used to stir the asphalt mixture. The spreading mechanism is arranged on the transport vehicle and is used to fill the stirred asphalt mixture into the pothole. The wind-heating mechanism comprises a heating barrel, an electric heating resistance wire and a blower. The heating barrel is arranged on the stirring mechanism. The electric heating resistance wire is arranged in the heating barrel. The blower is arranged on the stirring mechanism and is connected to the heating barrel.

[0007] By adopting the above technical solution, when repairing potholes on the road surface, the stirring mechanism first stirs the asphalt mixture, and at the same time the blower is started. The airflow generated by the blower is heated by the electric heating resistor and blown onto the asphalt mixture in the stirring process to heat the asphalt mixture. After the mixing and stirring is completed, the asphalt mixture is filled into the potholes on the road surface through the spreading mechanism to repair the potholes on the road surface. The setting of the blower improves the heating efficiency of the asphalt mixture and reduces energy consumption.

[0008] Optionally, the stirring mechanism includes a support frame, a stirring box, a first motor, a stirring shaft and stirring blades. The support frame is arranged on the transport vehicle, the stirring box is arranged on the support frame and is connected to the heating barrel, the first motor is arranged on the support frame, the stirring shaft is rotatably arranged in the stirring box and is connected to the output shaft of the first motor, and the stirring blades are arranged on the stirring shaft.

[0009] By adopting the above technical solution, when the asphalt mixture is stirred, the first motor is started, the first motor drives the stirring shaft to rotate, and the stirring shaft drives the stirring blades to rotate, thereby stirring the asphalt mixture.

[0010] Optionally, a first groove is provided on the side wall of the mixing box, and the mixing mechanism also includes a discharge assembly, the discharge assembly includes a first rotating door, a connecting rope, a second motor and a winch, the first rotating door is rotatably arranged on the mixing box, and is used to seal the first groove, the second motor is arranged on the transport vehicle, the winch is arranged on the transport vehicle and connected to the output shaft of the second motor, the connecting rope is arranged on the winch, and the end of the connecting rope away from the winch is connected to the first rotating door.

[0011] By adopting the above technical solution, when the asphalt mixture is loaded, the second motor is started, the second motor drives the winch to rotate, the winch drives the connecting rope to rotate, and the connecting rope drives the first rotating door to rotate, thereby facilitating the loading of the asphalt mixture.

[0012] Optionally, a second groove is further provided on the side wall of the mixing box, and the mixing mechanism also includes a discharging assembly, the discharging assembly includes a second rotating door and a cylinder, the second rotating door is rotatably arranged on the mixing box and is used to seal the second groove, the cylinder is hinged on the support frame, and the piston shaft of the cylinder is rotatably connected to the second rotating door.

[0013] By adopting the above technical solution, when the asphalt mixture that has been stirred and mixed is discharged, the cylinder is started, and the cylinder drives the second rotating door to rotate, thereby realizing the discharge of the asphalt mixture that has been stirred.

[0014] Optionally, the material distribution mechanism includes a slide rail, a slider, a material storage box, a discharge pipe, an electric control valve and a power assembly, the slide rail is arranged on the transport vehicle, the material storage box is slidably arranged on the slide rail through the slider, the discharge pipe is arranged on the material storage box, the electric control valve is arranged on the discharge pipe, and the power assembly is arranged on the material storage box and is used to drive the material storage box to slide.

[0015] By adopting the above technical solution, when the asphalt mixture is mixed, the mixed asphalt mixture is injected into the storage box through the second groove, and then the power component drives the storage box to move to the position of the pothole on the road surface, and then the electric control valve is started, the electric control valve connects the discharge pipe, and the discharge pipe injects the asphalt mixture into the pothole on the road surface, thereby realizing the automatic filling of the mixed asphalt mixture and improving work efficiency.

[0016] Optionally, the power assembly includes a third motor, a driving gear and a rack, the third motor is arranged on the storage box, the driving gear is keyed to the output shaft of the third motor, the rack is arranged on the transport vehicle, and the driving gear is meshed with the rack.

[0017] By adopting the above technical solution, when the storage box is moved, the third motor is started, the third motor drives the driving gear to rotate, and the driving gear is engaged with the rack, thereby realizing the sliding of the storage box.

[0018] Optionally, the transport vehicle is further provided with a flattening mechanism, which includes a rotating rod, a pressure roller and a pressing assembly. The rotating rod is rotatably arranged on the transport vehicle through the pressing assembly, and the pressure roller is rotatably arranged on the rotating rod.

[0019] By adopting the above technical solution, when flattening the asphalt mixture in the potholes on the road surface, the pressing assembly drives the rotating rod to rotate, the rotating rod drives the pressure roller to move, and then the transport vehicle moves, and the transport vehicle drives the pressure roller to move, thereby flattening the asphalt mixture.

[0020] Optionally, the pressing assembly includes a fourth motor, a first transmission gear and a second transmission gear, the fourth motor is arranged on the transport vehicle, the first transmission gear is keyed to the output shaft of the fourth motor, the second transmission gear is arranged on the rotating rod, and the first transmission gear is meshed with the second transmission gear.

[0021] By adopting the above technical solution, when the pressure roller approaches the asphalt mixture in the pit, the fourth motor is started, the fourth motor drives the first transmission gear to rotate, the first transmission gear drives the second transmission gear to rotate, the second transmission gear drives the rotating rod to rotate, and the rotating rod drives the pressure roller to approach the asphalt mixture in the pit.

[0022] Optionally, a gas filter assembly is also provided on the transport vehicle, and the gas filter assembly includes an outlet pipe, a gas filter box and a gas filter plate. The gas filter box is arranged on the transport vehicle, and the gas filter plate is arranged in the gas filter box. The outlet pipe is arranged on the mixing box and is connected to the interior of the mixing box, and the end of the outlet pipe away from the mixing box is connected to the gas filter box.

[0023] By adopting the above technical solution, the arrangement of the gas filter box and the gas filter plate realizes the filtration of the waste gas generated when the asphalt is heated, thereby reducing the probability of the waste gas being discharged into the air and causing environmental pollution.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. The setting of the blower improves the heating efficiency of the asphalt mixture and reduces energy consumption;

[0026] 2. It realizes the automatic filling of the asphalt mixture after mixing, improving the work efficiency;

[0027] 3. The setting of the gas filter box and the gas filter plate realizes the filtration of the waste gas generated when the asphalt is heated, thereby reducing the probability of the waste gas being discharged into the air and causing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a new road pothole repair machine in an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of the stirring mechanism in the embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of the structure of the discharge assembly and the discharging assembly in the embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of the material distribution mechanism in the embodiment of the present application;

[0032] Figure 5 For this application Figure 4 A magnified view of part A;

[0033] Figure 6 It is a structural schematic diagram of the flattening mechanism in an embodiment of the present application.

[0034] Figure numerals: 100, transport vehicle; 200, stirring mechanism; 210, support frame; 220, stirring box; 230, first motor; 240, stirring shaft; 250, stirring blade; 260, discharge assembly; 261, first rotating door; 262, second motor; 263, winch; 264, connecting rope; 265, rotating wheel; 270, discharge assembly; 271, second rotating door; 272, cylinder; 300, wind heating mechanism; 310, heating barrel; 320, electric heating resistance wire; 330, blower; 400, gas filter Mechanism; 410, gas filter box; 420, gas filter plate; 430, air outlet pipe; 500, material distribution mechanism; 510, material storage box; 520, slide rail; 530, slider; 540, material discharge pipe; 550, electric control valve; 560, power assembly; 561, mounting plate; 562, third motor; 563, driving gear; 564, rack; 600, flattening mechanism; 610, rotating rod; 620, pressure roller; 630, pressing assembly; 631, fourth motor; 632, first transmission gear; 633, second transmission gear. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0036] The embodiment of the present application discloses a novel road pothole repair machine.

[0037] refer to Figure 1 A novel road pothole repairing machine includes a transport vehicle 100, which is slidably arranged on the ground. The transport vehicle 100 is provided with a stirring mechanism 200 for stirring asphalt mixture, and the stirring mechanism 200 is provided with a wind heating mechanism 300 for heating the asphalt mixture. The transport vehicle 100 is also provided with a gas filtering mechanism 400 for filtering exhaust gas generated when the asphalt mixture is heated, a spreading mechanism 500 for filling the stirred and mixed asphalt mixture into the pothole, and a flattening mechanism 600 for flattening the asphalt mixture in the pothole.

[0038] When repairing potholes on the road, the transport vehicle 100 moves to the pothole on the road, and then the stirring mechanism 200 stirs the asphalt mixture, and the wind heating mechanism 300 heats the asphalt mixture. The stirred and mixed asphalt mixture enters the spreading mechanism 500, and then the spreading mechanism 500 injects the stirred and mixed asphalt mixture into the pothole on the road, and then the transport vehicle 100 drives the flattening mechanism 600 to flatten the asphalt mixture in the pothole on the road; at the same time, the setting of the gas filtering mechanism 400 realizes the filtration of the exhaust gas generated during the asphalt heating process, and reduces the pollution of the exhaust gas to the environment.

[0039] refer to Figure 2The stirring mechanism 200 includes a support frame 210, which is fixedly connected to the end face of the transport vehicle 100 away from the ground. The end of the support frame 210 away from the transport vehicle 100 is fixedly connected to a stirring box 220, and the end face of the support frame 210 away from the transport vehicle 100 is also fixedly connected to a first motor 230, and a stirring shaft 240 is fixedly connected to the output shaft of the first motor 230. The stirring shaft 240 is located in the stirring box 220, and a plurality of stirring blades 250 are fixedly connected to the side wall of the stirring shaft 240; the wind heating mechanism 300 includes a heating barrel 310, and the heating barrel 310 is fixedly connected to the end face of the stirring box 220 away from the transport vehicle 100. The heating barrel 310 is fixedly connected with the electric heat resistance wire 320, and the end surface of the mixing box 220 away from the transport vehicle 100 is also fixedly connected with a blower 330, and the blower 330 is connected with the heating barrel 310; when the asphalt mixture is stirred, the first motor 230 is started, the first motor 230 drives the stirring shaft 240 to rotate, the stirring shaft 240 drives the stirring blades 250 to rotate, and the stirring blades 250 stir the asphalt mixture. At the same time, the blower 330 is started, and the wind flow generated by the blower 330 is heated by the electric heat resistance wire 320 and blown into the mixing box 220 to heat the asphalt mixture.

[0040] The gas filtering mechanism 400 includes a gas filter box 410, which is set on the ground. A gas filter plate 420 is fixedly connected to the inside of the gas filter box 410. An outlet pipe 430 is fixedly connected to the side wall of the mixing box 220 close to the gas filter box 410. The outlet pipe 430 connects the mixing box 220 and the gas filter box 410. The setting of the gas filter box 410 and the gas filter plate 420 realizes the filtration of the exhaust gas generated when the asphalt is heated, thereby reducing the probability of the exhaust gas being discharged into the air and causing environmental pollution.

[0041] refer to Figure 3 A first groove is provided on a side wall of the mixing box 220, the mixing mechanism 200 also includes a discharge assembly 260, the discharge assembly 260 includes a first rotating door 261, the first rotating door 261 is rotatably connected to the mixing box 220 and is used to block the first groove, and a second motor 262 and a winch 263 are fixedly connected to the end surface of the transport vehicle 100 close to the heating barrel 310, the winch 263 is fixedly connected to the output shaft of the second motor 262, a connecting rope 264 is fixedly connected to the winch 263, and one end of the connecting rope 264 away from the winch 263 is fixedly connected to the first rotating door 261, and a rotating wheel 265 is rotatably connected to the end surface of the heating barrel 310 away from the mixing box 220, and the rotating wheel 265 abuts against the connecting rope 264 and is used to guide the connecting rope 264.

[0042] When adding asphalt mixture raw materials, the second motor 262 is started, the second motor 262 drives the winch 263 to rotate, the winch 263 drives the connecting rope 264 to rotate, the connecting rope 264 drives the first rotating door 261 to rotate, the first rotating door 261 rotates to open the first groove, and then the asphalt mixture raw materials are added to the mixing box 220.

[0043] A second groove is also formed on the side wall of the mixing box 220 on which the first groove is formed. The mixing mechanism 200 also includes a discharging assembly 270, which includes a second rotating door 271. The second rotating door 271 is rotatably connected to the mixing box 220. Two cylinders 272 are hinged on the end surface of the support frame 210 away from the transport vehicle 100, and the piston shafts of the two cylinders 272 are rotatably connected to the second rotating door 271. When the asphalt mixture that has been stirred and heated is to be discharged, the cylinder 272 is started, and the cylinder 272 drives the second rotating door 271 to rotate, and the second rotating door 271 opens the second groove, thereby realizing the discharging of the asphalt mixture that has been stirred and heated.

[0044] refer to Figure 4 and Figure 5 The material distributing mechanism 500 includes two slide rails 520, and the two slide rails 520 are fixedly connected to the end surface of the transport vehicle 100 fixedly connected to the support frame 210. Two sliders 530 are slidably connected to the two slide rails 520. The ends of the four sliders 530 away from the transport vehicle 100 are commonly fixedly connected to the storage box 510. The end surface of the storage box 510 close to the transport vehicle 100 is fixedly connected to a discharge pipe 540, and the side wall of the discharge pipe 540 is fixedly connected to an electric control valve. 550, the material distributing mechanism 500 also includes a power assembly 560, and the power assembly 560 includes a mounting plate 561, and the mounting plate 561 is fixedly connected to the material storage box 510, and a third motor 562 is fixedly connected to the end face of the mounting plate 561 away from the transport vehicle 100, and a driving gear 563 is keyed on the output shaft of the third motor 562, and a rack 564 is fixedly connected to the end face of the transport vehicle 100 close to the mixing box 220, and the driving gear 563 is meshed with the rack 564.

[0045] When repairing potholes on the road, the asphalt mixture that has been stirred and heated in the mixing box 220 enters the storage box 510, and then the third motor 562 is started, and the third motor 562 drives the driving gear 563 to rotate, and the driving gear 563 engages with the rack 564, thereby driving the storage box 510 to slide through the slider 530, and the storage box 510 drives the discharge pipe 540 to move to the position of the pothole on the road, and then the electric control valve 550 connects the discharge pipe 540, and the discharge pipe 540 fills the asphalt mixture in the storage box 510 into the pothole on the road.

[0046] refer to Figure 6The flattening mechanism 600 includes two rotating rods 610, which are both rotatably connected to the transport vehicle 100 and are respectively located on both sides of the transport vehicle 100, and the ends of the two rotating rods 610 away from the transport vehicle 100 are rotatably connected with a pressure roller 620; the flattening mechanism 600 also includes a pressing assembly 630, and the pressing assembly 630 includes a fourth motor 631, which is fixedly connected to the end surface of the transport vehicle 100 close to the mixing box 220, and a first transmission gear 632 is keyed on the output shaft of the fourth motor 631, and a second transmission gear 633 is fixedly connected to the end surface of the rotating rod 610 away from the transport vehicle 100, and the first transmission gear 632 is meshed with the second transmission gear 633.

[0047] When the asphalt mixture in the potholes is flattened, the fourth motor 631 is started, the fourth motor 631 drives the first transmission gear 632 to rotate, the first transmission gear 632 drives the second transmission gear 633 to rotate, the second transmission gear 633 drives the rotating rod 610 to rotate, the rotating rod 610 drives the pressure roller 620 to move, the pressure roller 620 is pressed down onto the asphalt mixture in the potholes, and then the transport vehicle 100 drives the pressure roller 620 to move to flatten the asphalt mixture in the potholes.

[0048] The implementation principle of a novel road pothole repairing machine in the embodiment of the present application is as follows: when repairing a road pothole, the transport vehicle 100 first moves to the position of the road pothole, and then the first motor 230 is started, and the first motor 230 drives the stirring shaft 240 and the stirring blade 250 to stir the asphalt mixture, and at the same time the blower 330 and the electric heating wire 320 are started, and the air flow generated by the blower 330 heats the asphalt mixture after being heated by the electric heating wire 320; the stirred and heated asphalt mixture is injected into the storage box 510 through the second groove, and then the third motor 562 is started, and the third motor 562 drives the driving gear 563 to rotate, thereby driving the storage box 510 to rotate. The material box 510 moves to the position of the pothole on the road surface, and then the discharge pipe 540 is aligned with the pothole on the road surface, and then the electric control valve 550 controls the discharge pipe 540 to be connected, so that the asphalt mixture is injected into the pothole on the road surface; at this time, the fourth motor 631 is started, and the fourth motor 631 drives the first transmission gear 632 to rotate, the first transmission gear 632 drives the second transmission gear 633 to rotate, and the second transmission gear 633 drives the rotating rod 610 to rotate, and the rotating rod 610 drives the pressure roller 620 to move, and the pressure roller 620 is pressed down onto the asphalt mixture in the pothole on the road surface, and then the transport vehicle 100 drives the pressure roller 620 to move to flatten the asphalt mixture in the pothole on the road surface.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new road pothole repair machine, characterized in that: The invention comprises a transport vehicle (100), a stirring mechanism (200), a material distribution mechanism (500) and a wind heating mechanism (300); the stirring mechanism (200) is arranged on the transport vehicle (100) and is used to stir the asphalt mixture; the material distribution mechanism (500) is arranged on the transport vehicle (100) and is used to fill the stirred asphalt mixture into a pit; the wind heating mechanism (300) comprises a heating barrel (310), an electric heating resistance wire (320) and a blower (330); the heating barrel (310) is arranged on the stirring mechanism (200); the electric heating resistance wire (320) is arranged in the heating barrel (310); and the blower (330) is arranged on the stirring mechanism (200) and is connected to the heating barrel (310).

2. The new road pothole repair machine according to claim 1 is characterized in that: The stirring mechanism (200) comprises a support frame (210), a stirring box (220), a first motor (230), a stirring shaft (240) and a stirring blade (250); the support frame (210) is arranged on the transport vehicle (100); the stirring box (220) is arranged on the support frame (210) and is connected to the heating barrel (310); the first motor (230) is arranged on the support frame (210); the stirring shaft (240) is rotatably arranged in the stirring box (220) and is connected to the output shaft of the first motor (230); and the stirring blade (250) is arranged on the stirring shaft (240).

3. The novel road pothole repairing machine according to claim 2 is characterized in that: A first groove is provided on the side wall of the mixing box (220). The mixing mechanism (200) further comprises a material discharge assembly (260). The material discharge assembly (260) comprises a first rotating door (261), a connecting rope (264), a second motor (262) and a winch (263). The first rotating door (261) is rotatably arranged on the mixing box (220) and is used to block the first groove. The second motor (262) is arranged on the transport vehicle (100). The winch (263) is arranged on the transport vehicle (100) and is connected to an output shaft of the second motor (262). The connecting rope (264) is arranged on the winch (263). One end of the connecting rope (264) away from the winch (263) is connected to the first rotating door (261).

4. The novel road pothole repairing machine according to claim 2 is characterized in that: A second groove is also formed on the side wall of the mixing box (220). The mixing mechanism (200) further comprises a discharging assembly (270). The discharging assembly (270) comprises a second rotating door (271) and a cylinder (272). The second rotating door (271) is rotatably disposed on the mixing box (220) and is used to seal the second groove. The cylinder (272) is hinged on the support frame (210), and a piston shaft of the cylinder (272) is rotatably connected to the second rotating door (271).

5. The novel road pothole repairing machine according to claim 1 is characterized in that: The material distributing mechanism (500) comprises a slide rail (520), a slider (530), a material storage box (510), a material discharge pipe (540), an electric control valve (550) and a power assembly (560); the slide rail (520) is arranged on the transport vehicle (100); the material storage box (510) is slidably arranged on the slide rail (520) via the slider (530); the material discharge pipe (540) is arranged on the material storage box (510); the electric control valve (550) is arranged on the material discharge pipe (540); and the power assembly (560) is arranged on the material storage box (510) and is used to drive the material storage box (510) to slide.

6. The novel road pothole repairing machine according to claim 5 is characterized in that: The power assembly (560) comprises a third motor (562), a driving gear (563) and a rack (564); the third motor (562) is arranged on the material storage box (510); the driving gear (563) is key-connected to the output shaft of the third motor (562); the rack (564) is arranged on the transport vehicle (100); and the driving gear (563) meshes with the rack (564).

7. The novel road pothole repair machine according to claim 1 is characterized in that: The transport vehicle (100) is also provided with a flattening mechanism (600), the flattening mechanism (600) comprising a rotating rod (610), a pressing roller (620) and a pressing assembly (630), the rotating rod (610) being rotatably arranged on the transport vehicle (100) via the pressing assembly (630), and the pressing roller (620) being rotatably arranged on the rotating rod (610).

8. The novel road pothole repairing machine according to claim 7 is characterized in that: The pressing assembly (630) comprises a fourth motor (631), a first transmission gear (632) and a second transmission gear (633); the fourth motor (631) is arranged on the transport vehicle (100); the first transmission gear (632) is key-connected to the output shaft of the fourth motor (631); the second transmission gear (633) is arranged on the rotating rod (610); and the first transmission gear (632) is meshed with the second transmission gear (633).

9. The novel road pothole repairing machine according to claim 2 is characterized in that: The transport vehicle (100) is also provided with a gas filter assembly, the gas filter assembly comprising an outlet pipe (430), a gas filter box (410) and a gas filter plate (420); the gas filter box (410) is provided on the transport vehicle (100); the gas filter plate (420) is provided in the gas filter box (410); the outlet pipe (430) is provided on the stirring box (220) and is in communication with the interior of the stirring box (220); and one end of the outlet pipe (430) away from the stirring box (220) is in communication with the gas filter box (410).

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