Leaf collecting vehicle and leaf collecting method

Abstract

The present invention relates to a leaf collection vehicle and a leaf collection method, comprising a chassis, a subframe, a housing, a leaf collection device, a sweeping brush device, and a straight-through guide pipe. The housing is provided with an air inlet, and the connection method is as follows: the subframe is fixedly mounted on the chassis, the housing is mounted on the subframe and rotatably connected to the subframe, the sweeping brush device is fixedly connected to the chassis or the subframe, the straight-through guide pipe is fixedly mounted on the subframe, one end of the straight-through guide pipe is sealedly connected to the upper end of the leaf collection device, and the other end of the straight-through guide pipe is sealedly connected to the air inlet of the housing. As the vehicle moves forward, leaves are sucked in by the leaf collection device and then enter the housing through the air inlet. The leaves begin to settle due to gravity and the action of the housing guide plate, and are all collected in the housing. The air bypasses the housing guide plate, is filtered by the filter device, and reaches the air outlet, and is blown out of the housing from the air outlet, thereby solving the problem of leaves blocking the air outlet. The vehicle belongs to the field of special sanitation vehicles.

Description

Technical Field

[0001] The invention relates to a sanitation cleaning vehicle with a leaf collecting device, belongs to equipment in the field of sanitation, and in particular to a leaf collecting vehicle. Background Art

[0002] In today's society, as environmental protection requirements continue to rise, people's demands for the environment are also becoming increasingly high. This is especially true in cities, where the number of green trees and roadside trees is increasing year by year. During the deciduous season, leaves flutter and fall with the wind, some landing on the road, and some in green belts. Leaves that fall on the road are blown everywhere by the wind, affecting the city's appearance. In rainy weather, leaves that are not cleaned in time will rot and deteriorate, causing a serious impact on the urban environment. Existing devices are prone to clogging due to their small flow area. Currently, leaf cleaning mainly relies on manual cleaning by sanitation workers, which is labor-intensive, difficult, and requires a lot of manpower, material, and financial resources. Summary of the Invention

[0003] The main purpose of the present invention is to solve the problems of low efficiency, high labor intensity, great difficulty in cleaning, and the need for a large amount of manpower, material and financial resources in manual leaf cleaning, as well as to solve the problem that the current leaf cleaning device has a small flow area at the cleaning port, is easily clogged, and leaves flying around are easily missed and cannot be completely cleaned.

[0004] The present invention is achieved through the following technical solutions, a leaf collection vehicle, characterized in that it includes a chassis, a subframe, a box, a leaf collection device, a sweeping device, and a straight-through guide pipe, the box being provided with an air inlet, and its connection method is: the subframe is fixedly mounted on the chassis, the box being mounted on the subframe and rotatably connected to the subframe, the sweeping device being fixedly connected to the chassis or the subframe, the straight-through guide pipe being fixedly mounted on the subframe, one end of the straight-through guide pipe being sealed and docked with the upper end of the leaf collection device, and the other end of the straight-through guide pipe being sealed and docked with the air inlet of the box.

[0005] The leaf collecting device includes a cylindrical structural body, a driving device, and fan blades, and its connection method is as follows: the driving device is fixedly connected to the inside of the structural body, the fan blades are connected to the shaft end of the driving device, and rotate with the shaft end of the driving device. The fan blades generate upward wind to suck in the leaves and blow the leaves into the box.

[0006] Furthermore, the structural body includes a cylindrical shell, casters, a traction seat, and a guide device, and the connection method is: the casters are fixedly connected to the bottom of the shell, the traction seat is fixedly connected to the shell, and the guide device is fixedly installed at the lower end of the shell; the driving device includes: a power device, a streamlined outer cover, and a shuttle-shaped connecting device. The power device is fixedly connected to the streamlined outer cover by bolts, and the shaft end of the power device extends out of the lower end of the streamlined outer cover. The shuttle-shaped connecting device is fixedly connected to the streamlined outer cover. The shuttle-shaped connecting device is an installation component of the driving device. The use of the streamlined outer cover and the shuttle-shaped connecting device can reduce wind resistance and prevent leaves from getting stuck, thereby ensuring that leaves pass smoothly.

[0007] Furthermore, the fan blades include a plurality of blades and a blade connector, wherein the blades are fixedly connected to the blade connector. The number of blades is 3, 4, 5, or 6, and the connection method is such that the plurality of blades are uniformly fixedly connected to the blade connector along the circumference by riveting, welding, or bolting.

[0008] Furthermore, the flow-guiding device is composed of a plurality of equal-width spiral stators, and the equal-width spiral stators are designated such that the spirals on both sides of the stators have the same starting angle, pitch and height, and the spiral radii are R1 and R2 respectively, and the values of R1 and R2 are not equal. The flow-guiding device is fixedly mounted at the lower end of the shell, and its function is to ensure that there is orderly spiral wind at the entrance, and to prevent leaves from flying around due to wind turbulence. The high-speed rotating blades and spiral flow-guiding device arranged inside the leaf collecting device are used to generate a spiral upward wind to suck in the leaves and blow the leaves into the box.

[0009] Furthermore, the structural body also includes a scraper device, which uses a flexible material. The scraper device is connected to the shell by bolts. The mounting hole on the scraper device is a long slot hole. The relative position of the scraper device and the shell is adjusted through the long slot hole, and the relative height of the scraper device and the shell can be adjusted. The main function of the scraper device is to increase the sealing performance, gather leaves and prevent them from being missed when there are too many leaves.

[0010] Furthermore, the straight-through guide pipe is composed of a docking flange, a straight-through bellows, and a sealing gasket, and its connection method is: the upward end of the straight-through bellows is fixedly connected to the docking flange, and the sealing gasket is installed on the docking flange. Its connection method is: one end of the bellows is fixedly connected to the docking flange through a clamp, and the sealing gasket is fixedly connected to the docking flange by gluing or screwing. The function of the sealing gasket is to prevent leaves from overflowing from the connection between the docking flange and the leaf compartment.

[0011] Furthermore, the power device may be an electric motor, a hydraulic motor, or a combination of an electric motor, a hydraulic motor and a speed change device.

[0012] Furthermore, the sub-frame includes a sub-frame body, a swivel seat, and a power device bracket, and its connection method is: the swivel seat is fixedly connected to the sub-frame main frame body, the swivel seat is used to connect to the box body, and the box body is rotatably connected to the sub-frame main frame body through the swivel seat.

[0013] Furthermore, the upper body power can be an electric motor, an engine, or can be taken from the vehicle chassis.

[0014] Furthermore, the box body also includes a leaf compartment, a rear door, a filtering device, a box body guide plate, and an air outlet, and the connection method is: the rear door is arranged on one side of the leaf compartment and is movably connected to the leaf compartment, the air inlet is arranged at a position corresponding to the leaf compartment and the docking flange, and is communicated with the leaf compartment, the air outlet is arranged on the outside of the leaf compartment and is communicated with the leaf compartment, a filtering device is provided between the air outlet and the leaf compartment, and the box body guide plate is installed inside the leaf compartment and is arranged between the air inlet and the air outlet to separate the air inlet from the air outlet, so as to prevent the air flow carrying leaves from flowing directly from the air inlet to the air outlet position to block the filtering device.

[0015] Furthermore, the caster is provided with an adjustment handle, by adjusting the adjustment handle, the relative height of the caster can be adjusted. Rotating the adjustment handle clockwise increases the relative height of the motion device, and rotating the adjustment handle counterclockwise decreases the relative height of the caster. After adjustment, the height range of the shell from the ground is 75-150 mm.

[0016] Furthermore, the mounting hole for connecting the scraper device and the shell is a long slot hole, the length of the long slot hole is 15-40 mm, and the relative height of the scraper device and the shell can be adjusted by adjusting the relative position of the scraper device and the shell.

[0017] Preferably, the scraper device is made of flexible materials such as plastic and rubber to prevent the scraper device from being damaged by ground protrusions.

[0018] Furthermore, the caster and the scraper device are coordinated and adjusted to ensure that the ground clearance of the scraper device is 5-15 mm.

[0019] Furthermore, the guide device is composed of a plurality of equal-width spiral stators, and the equal-width spiral stators are designated such that the spirals on both sides of the stator have the same starting angle, pitch and height, and the spiral radii are R1 and R2 respectively. The values of R1 and R2 are not equal. The value of R1 is determined according to the radius of the inner wall of the shell. The value of R1 is 0.5-1 mm smaller than the radius of the inner wall of the shell, which facilitates the installation of the guide device. The value of R2 is 15-50 mm smaller than the value of R1.

[0020] Furthermore, the sweeping brush device is composed of several sweeping brushes installed in different positions, including a right sweeping brush, a left front sweeping brush, and a right front sweeping brush. The right sweeping brush is fixedly installed on the sub-frame located in front of the leaf collecting device, and the left front sweeping brush and the right front sweeping brush are fixedly installed on the chassis. They extend forward in the direction of vehicle travel and are staggered front and back with each other to rotate and collect the leaves in the direction of the leaf collecting device.

[0021] Furthermore, the control system includes an electrical control system and a hydraulic control system. The electrical control system includes a human-computer interaction device, a controller, and connecting lines. The hydraulic control system includes a hydraulic oil pump, a hydraulic cylinder, a hydraulic motor, a hydraulic oil pipe, a hydraulic solenoid valve, and a radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A simplified structural diagram of a leaf collection device.

[0023] Figure 2 Schematic diagram of the subframe structure.

[0024] Figure 3 Schematic diagram of the box structure.

[0025] Figure 4 Main view of the box structure.

[0026] Figure 5 Right view of the box structure.

[0027] Figure 6 Schematic diagram of the collection device.

[0028] Figure 7 Collection cross-sectional view.

[0029] Figure 8 Schematic diagram of the main structure.

[0030] Figure 9 Cross-sectional view of the main structure.

[0031] Figure 10 Schematic diagram of the exercise device.

[0032] Figure 11 Schematic diagram of the scraper device.

[0033] Figure 12 Top view of the spiral guide device.

[0034] Figure 13 Schematic diagram of the drive unit.

[0035] Figure 14 Cross-sectional view of the drive unit.

[0036] Figure 15 Schematic diagram of fan blade structure.

[0037] Figure 16 Schematic diagram of the sweeping device.

[0038] Figure 17 Schematic diagram of the leaf diversion device.

[0039] Figure 18 Schematic diagram of the box air inlet. DETAILED DESCRIPTION

[0040] like Figure 1 As shown, a leaf collecting vehicle with a spiral-type vehicle-mounted leaf collecting device with a streamlined structure is characterized in that it includes a chassis 1, a subframe 2, a box 3, an upper power unit 4, a leaf collecting device 5, a sweeping device 6, a control system 7, and a leaf guide device 8. The connection method is as follows: the subframe 2 is fixedly connected to the chassis 1 by U-bolts and a limit plate, and the box 3 is rotatably connected to the subframe 2 by a pin shaft. A safety support rod is also provided between the box and the subframe. When the box is lifted, the safety support rod is supported to prevent the box from falling due to a fault or misoperation, causing a safety hazard. The upper power unit 4 is fixedly installed on the subframe 2 by a bolt group, the sweeping device 6 is fixedly connected to the chassis 1 or the subframe 2 by bolts, the control system 7 is installed on the chassis 1 or the subframe 2, one end of the leaf guide device 8 is fixedly connected to the upper end of the leaf collecting device 5, and the other end of the leaf guide device 8 is fixedly installed on the subframe 2;

[0041] Furthermore, the leaf collecting device 5 includes a structural body 51, a driving device 52, and a fan blade 53. The connection method is as follows: the driving device 52 is fixedly connected to the inside of the structural body 51 using bolts, and the fan blade 53 is fixedly connected to the shaft end of the driving device 52 by bolts. The connection between the shaft end of the driving device 52 and the blade 53 is provided with a keyway, and a corresponding flat key is installed during the connection to transmit torque;

[0042] Furthermore, the structural body 51 includes a housing 511, casters 512, a traction seat 513, a scraper device 514, and a guide device 515. The connection method is as follows: the casters 512 are fixedly connected to the housing 511 by welding, the traction seat 513 is fixedly connected to the housing 511 by welding, the scraper device 514 is connected to the lower end of the housing 511 by bolts, and the guide device 515 is fixedly installed on the lower end of the housing 511 by welding.

[0043] Furthermore, the drive device 52 includes: a power device 521, a streamlined outer cover 522, and a shuttle-shaped connecting device 523. The power device 521 and the streamlined outer cover 522 are fixedly connected by bolts. The shaft end of the power device 521 extends out of the lower end of the streamlined outer cover 522. The shuttle-shaped connecting device 523 is fixedly connected to the streamlined outer cover 522 by welding. The connecting device 523 is a mounting component of the drive device 52.

[0044] Preferably, the power unit 521 is a combination of a hydraulic motor and a gearbox, and the gearbox is a speed-increasing gearbox.

[0045] Preferably, the fan blade 53 has three blades 531 , and the blades 531 are fixedly connected to the blade connector 532 by riveting.

[0046] Preferably, the scraper device uses a flexible material, and the scraper device is connected to the shell by bolts. The mounting hole on the scraper device is a long slot hole. The relative position of the scraper device and the shell is adjusted through the long slot hole, and the relative height of the scraper device and the shell can be adjusted. The main function of the scraper device is to increase the sealing, gather leaves and prevent them from being missed when there are too many leaves.

[0047] Furthermore, the straight-through guide pipe is composed of a docking flange 81, a straight-through bellows 82, and a sealing gasket 83, and its connection method is: the upward end of the straight-through bellows 82 is fixedly connected to the docking flange 81, and the sealing gasket 83 is installed on the docking flange 81. Its connection method is: one end of the straight-through bellows 82 is fixedly connected to the docking flange 81 through a clamp, and the sealing gasket 83 is fixedly connected to the docking flange 81 by gluing or screwing. The function of the sealing gasket 83 is to prevent leaves from overflowing from the connection between the docking flange and the leaf compartment.

[0048] Furthermore, the sub-frame 2 includes a sub-frame main body 21, a swivel seat 22, and a power unit bracket 23, and its connection method is: the swivel seat 22 is fixedly connected to the sub-frame main frame 21 by welding, and the power unit bracket 23 is fixedly connected to the sub-frame main body 21 by welding. The swivel seat 22 is used to connect to the box body 3, and the power unit bracket 23 is used to connect to the upper power unit 4.

[0049] Preferably, the upper body power is provided by an auxiliary engine, which is installed on the auxiliary frame body 21 and provides power for the hydraulic motor of the leaf collecting device.

[0050] Furthermore, the housing 3 includes a leaf compartment 31, a rear door 32, a filter device 33, a housing deflector 34, an air inlet 35, and an air outlet 36. The housing 34 is connected as follows: the rear door 32 is pivotally connected to the leaf compartment 31 using a pin, the filter device 34 is fixedly connected to the leaf compartment 31 using bolts, and the housing deflector 34 is fixedly connected to the leaf compartment 31 by welding. The air inlet 35 is located at a position corresponding to the docking flange 81 of the leaf compartment 31. The air outlet 36 is installed on the upper front side of the leaf compartment 31 and is arranged side by side with the air inlet relative to the leaf compartment, one for inward intake and the other for outward exhaust. The housing deflector 34 is installed within the leaf compartment 31, between the air inlet 35 and the air outlet, to prevent airflow carrying leaves from flowing directly from the air inlet 35 to the air outlet 36 and clogging the filter device.

[0051] Preferably, the outlet of the air outlet 36 blows downward directly toward the ground. The wind blowing downward can disturb the leaves, making it easier for the leaves to be sucked up. In addition, the wind blowing downward is sucked away by the leaf collecting device, thereby improving the suction efficiency.

[0052] Furthermore, the caster 512 is provided with an adjustment handle 5121, by which the relative height of the caster 512 can be adjusted; it is also characterized in that the mounting hole for connecting the scraper device 514 and the shell 511 is a long slot hole, and the relative height of the scraper device 514 and the shell 511 can be adjusted by adjusting the relative position of the scraper device 514 and the shell 511. After adjustment, the height range of the shell 511 from the ground is 100 mm.

[0053] Preferably, the mounting hole connecting the scraper device 514 and the shell 511 is a long slot hole, and the length of the long slot hole is 30 mm. Adjusting the relative position of the scraper device 514 and the shell 511 can adjust the relative height of the scraper device 514 and the shell 511.

[0054] Preferably, the motion device 512 and the scraper device 514 are coordinated and adjusted so that the ground clearance of the scraper device 14 is about 10 mm.

[0055] Preferably, the scraper device 514 is made of a rubber sheet to prevent the scraper device 14 from being damaged by ground protrusions.

[0056] Preferably, the guide device 515 is composed of three equal-width spiral stators. The equal-width spiral stators specify that the spirals on both sides of the stator have the same starting angle, pitch and height, and the spiral radii are R1 and R2 respectively. The values of R1 and R2 are not equal. The value of R1 is determined according to the radius of the inner wall of the shell 511. The value of R1 is 0.5mm smaller than the radius of the inner wall of the shell 511, which facilitates the installation of the guide device 515. The radius of the inner wall of the shell 511 is 272mm, the value of R1 is 271.5mm, the value of R2 is 20mm smaller than the value of R1, and the value of R2 is 251.5mm.

[0057] Furthermore, the right sweeping brush 61, the left front sweeping brush 62, and the right front sweeping brush 63, the right sweeping brush 61 is fixedly mounted on the sub-frame located in front of the leaf collecting device 5, the left front sweeping brush 62 and the right front sweeping brush 63 are fixedly mounted on the chassis 1, extending forward in the direction of vehicle travel, and staggered front and rear with each other to rotate and collect the leaves in the direction of the leaf collecting device 5.

[0058] Furthermore, the control system 7 includes an electrical control system and a hydraulic control system. The electrical control system includes a human-computer interaction device, a controller, and connecting lines. The hydraulic control system includes a hydraulic oil pump, a hydraulic cylinder, a hydraulic motor, a hydraulic oil pipe, a hydraulic solenoid valve, and a radiator.

[0059] A method for collecting leaves using the above-mentioned leaf collecting vehicle. When working, the leaf collecting vehicle is driven to a construction site, the control system is used to control the states of various components of the vehicle to become working states, the auxiliary engine is started, the various sweeping brushes are turned on, and the hydraulic motor of the leaf collecting device is started to rotate the fan blades at high speed. The high-speed rotating fan blades generate upward spiral wind. The guide device arranged at the lower end of the shell can ensure that there is orderly spiral wind at the inlet, preventing leaves from flying around due to wind turbulence. The spiral wind at the entrance diffuses outward, gradually decreasing in force. As the leaf collector approaches the leaves, the outermost wind first disturbs them, causing them to slowly spin and gradually move inward. When the leaves reach the entrance, they are driven upward by the stronger wind, then smoothly pass through the streamlined fan drive, eliminating the blockage problem. The leaves then follow the airflow into the straight-through guide duct, where they continue to rise under the force of the wind, passing through the air inlet and into the housing. Due to gravity and the action of the housing's deflector plates, the leaves begin to settle into the leaf compartment. The air bypasses the deflector plates, passes through the filter, and reaches the air outlet, where it is blown out of the housing, eliminating the problem of leaf blockage and onto the ground. Start the chassis engine, engage forward gear, and drive the vehicle forward. The leaves on both sides of the leaf collector are swept by the left, right, and right front brushes to the front of the leaf collector. As the vehicle moves forward, all the leaves are collected in the housing.

[0060] When unloading, the vehicle is driven to the designated location, the rear door is opened through the control system, the box body is lifted, and the leaves of the box body slide out of the box body under the action of gravity, and then the box body is reset and the rear door is closed to complete the unloading.

Claims

1. A leaf collecting vehicle, characterized by: The invention comprises a chassis (1), a sub-frame (2), a box (3), a leaf collecting device (5), a sweeping device (6), and a straight-through guide pipe (8); the box (3) is provided with an air inlet (35), and the connection method is as follows: the sub-frame (2) is fixedly mounted on the chassis (1); the box (3) is mounted on the sub-frame (2) and is rotatably connected to the sub-frame (2); the sweeping device (6) is fixedly connected to the chassis (1) or the sub-frame (2); the straight-through guide pipe (8) is fixedly mounted on the sub-frame (2); one end of the straight-through guide pipe (8) is sealed and docked with the upper end of the leaf collecting device (5); and the other end of the straight-through guide pipe (8) is sealed and docked with the air inlet (35) of the box (3); The leaf collecting device (5) comprises a cylindrical structural body (51), a driving device (52), and a fan blade (53), and the connection method thereof is as follows: the driving device (52) is fixedly connected to the interior of the structural body (51), the fan blade (53) is connected to the shaft end of the driving device (52), and rotates with the shaft end of the driving device (52), and the fan blade (53) generates an upward wind to suck the leaves and blow the leaves into the box; The structural body (51) includes a cylindrical shell (511), casters (512), a traction seat (513), and a flow guide device (515), and the connection method is as follows: the casters (512) are fixedly connected to the bottom of the shell (511), the traction seat (513) is fixedly connected to the shell (511), and the flow guide device (515) is fixedly installed at the lower end of the shell (511); the driving device (52) is composed of a power device (521), a streamlined outer cover (522), and a shuttle-shaped connecting device (523). The device (521) is fixedly connected to the streamlined outer cover (522) by bolts, the shaft end of the power device (521) extends out of the lower end of the streamlined outer cover (522), the shuttle-shaped connecting device (523) is fixedly connected to the streamlined outer cover (522), and the shuttle-shaped connecting device (523) is a mounting component of the driving device (52); the fan blade (53) includes a plurality of blades (531) and a blade connector (532), and the connection method is: the blade (531) is fixedly connected to the blade connector (532); The flow guide device (515) is composed of a plurality of equal-width spiral structure stators, wherein the equal-width spiral structure stators are defined such that the spirals on both sides of the stator have the same starting angle, pitch and height, and the spiral radii are R1 and R2 respectively, and the values of R1 and R2 are not equal; The structural body (51) further includes a scraper device (514), the scraper device (514) uses a flexible material, the scraper device (514) is connected to the shell (511) by bolts, the mounting hole on the scraper device (514) is a long slot hole, and the relative position of the scraper device (514) and the shell (511) is adjusted through the long slot hole to adjust the relative height of the scraper device (514) and the shell (511); The caster (512) is provided with an adjustment device (5121), and the relative height of the caster (512) can be adjusted by adjusting the adjustment device (5121); The straight-through flow guide pipe (8) is composed of a docking flange (81), a straight-through corrugated pipe (82), and a sealing gasket (83), and its connection method is as follows: the upward end of the straight-through corrugated pipe (82) is fixedly connected to the docking flange (81), and the sealing gasket (83) is installed on the docking flange (81).

2. A leaf collecting vehicle according to claim 1, characterized in that: The sub-frame (2) comprises a sub-frame body (21), a swivel seat (22), and a power device bracket (23), and the connection method thereof is as follows: the swivel seat (22) is fixedly connected to the sub-frame body (21), the swivel seat (22) is used to be connected to the box body (3), and the box body (3) is rotatably connected to the sub-frame body (21) via the swivel seat (22).

3. A leaf collecting vehicle according to claim 2, characterized in that: The box body (3) further comprises a leaf compartment (31), a rear door (32), a filter device (33), a box body guide plate (34), and an air outlet (36), wherein the connection method is as follows: the rear door (32) is arranged on one side of the leaf compartment (31) and is movably connected to the leaf compartment (31); the air inlet (35) is connected to the leaf compartment (31) and is arranged corresponding to the docking flange (81) of the leaf compartment (31); the air outlet (36) is installed on the front of the leaf compartment (31). The air inlet (35) is located on the outside of the leaf compartment and is arranged side by side with the air inlet (35) relative to the leaf compartment. A filtering device is provided between the air outlet (36) and the leaf compartment. The box body guide plate (34) is installed inside the leaf compartment (31) and is provided between the air inlet (35) and the air outlet (36) to separate the air inlet (35) from the air outlet (36) to prevent the air flow carrying leaves from flowing directly from the air inlet to the air outlet to block the filtering device (33).

4. A leaf collecting vehicle according to claim 3, characterized in that: The sweeping brush device (6) comprises a right sweeping brush (61), a left front sweeping brush (62), and a right front sweeping brush (63). The right sweeping brush (61) is fixedly mounted on the sub-frame located in front of the leaf collecting device (5). The left front sweeping brush (62) and the right front sweeping brush (63) are fixedly mounted on the chassis (1), extending forward in the direction of travel of the vehicle and arranged in a staggered manner to rotate and collect leaves in the direction of the leaf collecting device (5).

5. A leaf collecting method using the leaf collecting vehicle according to any one of claims 1 to 4, characterized in that: The leaf collecting vehicle drives to the construction site, controls the states of various components of the vehicle to become working states through the control system, starts the auxiliary engine, opens various sweeping brushes, starts the hydraulic motor of the leaf collecting device to make the fan blades rotate at high speed, and the high-speed rotating fan blades generate upward spiral wind. The guide device provided at the lower end of the shell is used to ensure that there is orderly spiral wind at the entrance to prevent leaves from flying around due to wind turbulence. The spiral wind at the entrance spreads outward. When the leaf collecting device approaches the leaves, the outermost wind disturbs the leaves first. The leaves slowly turn with the wind under the action of the wind and gradually move inward. When the leaves reach the entrance, they are driven by the stronger wind to spiral upward, and then the leaves pass through the streamlined fan drive device. The airflow enters the straight-through guide pipe, and the leaves continue to rise under the action of the wind, pass through the air inlet and reach the box. The leaves begin to settle in the leaf cabin due to gravity and the box guide plate. The air bypasses the box guide plate and is filtered through the filter device to reach the air outlet, and is blown out of the box from the air outlet. The chassis engine is started, the forward gear is engaged, and the vehicle moves forward. The leaves on both sides of the leaf collecting device are swept to the front of the leaf device by the left front sweeping brush, the right front sweeping brush and the right sweeping brush. The vehicle moves forward and the leaves are collected in the box. When unloading, the vehicle is driven to the designated position, the rear door is opened through the control system, and the box is lifted. The leaves in the box slide out of the box under the action of gravity, and then the box is reset and the rear door is closed to complete the unloading.

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