A leaf collection vehicle

Abstract

This utility model discloses a leaf collection vehicle, relating to the field of urban sanitation technology. The vehicle includes a vehicle body equipped with a negative pressure trash can, a leaf collection device, a leaf collection device fixing mechanism, and a sweeping device. The leaf collection device includes a suction port, which comprises a housing and a suction port insert. The housing has a suction channel extending vertically upwards from the bottom of the housing. The bottom of the suction channel has a bottom opening, and a suction port is located on the side of the suction channel near the bottom. The bottom opening connects to and is through the suction port. A suction port insert is located at the suction port, and the insert can move towards the suction port to cover it and move away from it to expose it. The suction port can change size using its shape and structure to prevent clogging. Using this leaf collection vehicle greatly improves the efficiency of sweeping up lightly littered objects such as leaves and branches.

Description

Technical Field

[0001] This utility model relates to the field of urban cleaning technology, and in particular to a leaf collection vehicle. Background Technology

[0002] In existing urban sanitation, street vacuum trucks are commonly used. However, traditional street vacuum trucks are prone to clogging when vacuuming leaves, resulting in poor cleaning performance and low work efficiency. Chinese patent CN207739203U provides a self-adjusting compression suction port for a road sweeper. This suction port incorporates a self-adjusting clamping block on its housing. When the vehicle is operating, the clamping block is close to the ground, increasing the negative pressure of the airflow. This allows for the complete suction of dust with a large surface area and high-density particles. When encountering large, lightweight objects, the suction port continues to move forward, causing the object to push open the self-adjusting clamping block and be sucked into the truck bed. However, the self-adjusting clamping block at the suction port of this self-adjusting compression sweeper is complex due to the presence of the self-adjusting clamping block at the suction port and the laterally extending area inside the suction port. When encountering large, light objects, the objects need to be used to push up the self-adjusting clamping block. If there are many light objects or the suction is insufficient, the self-adjusting clamping block may not be able to be pushed up, causing the suction port to be blocked by branches and leaves. Moreover, the size of the suction port cannot be adjusted, and large light objects can easily directly block the suction port. Therefore, there is an urgent need for a suction port that can prevent clogging. Utility Model Content

[0003] The purpose of this utility model is to provide a leaf collection vehicle to solve the problems existing in the prior art, so that the suction port of the leaf collection vehicle can prevent clogging by branches and leaves.

[0004] To achieve the above objectives, this utility model provides the following solution: a leaf collection vehicle, comprising a vehicle body, wherein the vehicle body is equipped with a garbage bin with negative pressure, a leaf collection device, a leaf collection device fixing mechanism, and a sweeping device, characterized in that the leaf collection device is a straight-through structure for collecting lightly littered objects, and its connection method is as follows: one end of the leaf collection device is detachably and fixedly connected to the bottom of the garbage bin of the vehicle body and communicates with it, and the other end is fixedly connected to the leaf collection device fixing mechanism; one end of the sweeping device is fixedly connected to the bottom of the vehicle body.

[0005] The leaf collection device includes a suction pipe and a suction port. One end of the suction pipe is fixedly connected to the suction port, and the other end is fixedly connected to and communicates with the bottom of the garbage bin of the vehicle body.

[0006] The suction port includes a housing and a suction port insert plate. The housing has a suction channel inside, which extends vertically upward from the bottom of the housing and communicates with the suction pipe. The bottom of the suction channel has a bottom opening, and a suction port is provided on the side of the suction channel near the bottom. The bottom opening is connected to and communicates with the suction port. The suction port insert plate is provided at the suction port. The suction port insert plate can move towards the suction port to cover the suction port and move away from the suction port to expose the suction port.

[0007] The suction port faces the direction in which the leaf collection vehicle moves. The cleaning device has two sweeping discs, each of which is located on the side near the suction port and is arranged side by side. The sweeping discs are used to sweep the ground and collect the garbage in front of the suction port.

[0008] Preferably, the size of the suction channel is the same as or similar to the size of the suction pipe.

[0009] Preferably, the leaf collecting device fixing mechanism includes a tube fixing frame and a suction port lifting device. One end of the tube fixing frame is detachably fixed to the bottom of the vehicle body. The suction port lifting device includes a lifting cylinder, an upper connecting part, and a lower connecting part. One end of the upper connecting part is detachably fixed to the vehicle body, and the other end is hinged to one end of the lower connecting part. The other end of the lower connecting part is hinged to the tube fixing frame. One end of the lifting cylinder is hinged to the upper connecting part, and the other end is hinged to the lower connecting part. The lifting cylinder can drive the lower connecting part to rotate relative to the upper connecting part, and the lower connecting part can drive the suction port to move vertically.

[0010] Preferably, the suction pipe includes a first fixed pipe, a corrugated pipe, and a second fixed pipe. The first fixed pipe is fixedly connected to the pipe body fixing frame. One end of the first fixed pipe is fixedly connected to one end of the corrugated pipe, and the other end of the corrugated pipe is fixedly connected to one end of the second fixed pipe. The second fixed pipe is fixedly connected to the lower connecting part. The other end of the second fixed pipe is fixedly connected to the side of the outer shell away from the bottom opening and communicates with the suction channel.

[0011] Preferably, the cleaning device includes two cleaning components located on the same side of the bottom of the vehicle body. Each cleaning component includes a sweeping disc cylinder, a parallelogram-shaped connecting rod, and a sweeping disc. One end of the sweeping disc cylinder is connected to the vehicle body, and the other end is hinged to the parallelogram-shaped connecting rod. One end of the parallelogram-shaped connecting rod is connected to the vehicle body, and the other end is connected to the sweeping disc. The sweeping disc cylinder can drive the parallelogram-shaped connecting rod to move the sweeping disc vertically. At least one of the parallelogram-shaped connecting rods... A rotating seat is hinged to the end of the vehicle body. One side of the rotating seat is hinged to the vehicle body, and the other side is fixedly connected to an ear plate. An arc-shaped groove is formed on the ear plate, and a pin is movably connected in the arc-shaped groove. One end of the pin is fixedly connected to the parallelogram connecting rod. A telescopic cylinder is also provided on the vehicle body. One end of the telescopic cylinder is hinged to the vehicle body, and the other end is hinged to the pin. The telescopic cylinder can drive the pin to move in the arc-shaped groove, and the pin can drive the rotating seat to rotate around the connection between the rotating seat and the vehicle body.

[0012] Preferably, a slider is provided on the outer side of the outer shell, and a linear sliding structure is provided on the suction port plate. The slider matches the linear sliding structure, and the suction port plate can slide along the direction of the linear sliding structure.

[0013] Preferably, the leaf collecting device and the leaf collecting device fixing mechanism are a fixed, detachable, and replaceable set of components.

[0014] Preferably, at least one set of detachable and replaceable components is provided, which consists of suction channels and suction pipes of different diameters, but the fixing mechanism of the leaf collection device is of a standard size, which is convenient for disassembly and installation.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] This utility model provides a leaf collection vehicle that features a straight-through leaf collection device with a suction port at its bottom opening that connects and runs through it. This eliminates any bends or unnecessary components between the bottom opening and the suction port, reducing complexity and preventing blockage when debris passes through them. The vertical suction channel further reduces its complexity and prevents blockage. The suction port insert can adjust the size of the suction port to accommodate different volumes of debris, further preventing blockage. It can also be adjusted to a suitable position to prevent reduced suction power within the suction channel due to an excessively large opening. Therefore, the leaf collection vehicle provided by this utility model, by setting a bottom opening of the leaf collection device that is connected and penetrates the suction port, and by having a vertical suction channel with a uniform inner diameter, reduces the overall complexity of the suction port and prevents garbage from clogging at the end of the suction channel and during the flow process; by using a movable suction port insert plate to adjust the size of the suction port to prevent clogging of the suction port, and also to prevent the suction port opening from being too large and reducing the suction power, and by having a detachable and replaceable complete set of components composed of suction channels with different inner diameters, it can adapt to more application scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] . Figure 1 This is a schematic diagram of the dust suction port in the leaf collection vehicle provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the dust suction port in the leaf collection vehicle provided by this utility model.

[0020] Figure 3 This is a structural schematic diagram of the dust collection and sweeping vehicle provided by this utility model.

[0021] Figure 4 This is a schematic diagram of the leaf collection device in the leaf collection vehicle provided by this utility model when the corrugated pipe is not installed.

[0022] Figure 5 This is a schematic diagram of the leaf collection device in the leaf collection vehicle provided by this utility model.

[0023] Figure 6 This is a schematic diagram of the cleaning device in the leaf collection vehicle provided by this utility model.

[0024] In the diagram: 1-Suction port, 11-Outer shell, 12-Suction port insert plate, 13-Bottom opening, 14-Suction port, 15-Sliding head, 16-Sliding structure, 3-Leaf collection device fixing mechanism, 31-Suction pipe, 311-First fixing pipe, 312-Corrugated pipe, 313-Second fixing pipe, 314-Internal pipe in the carriage, 32-Pipe fixing frame, 33-Suction port lifting device, 331-Lifting cylinder, 332-Upper connecting part, 333-Lower connecting part, 4-Fallen leaf collection vehicle, 41-Sweeping device, 411-Sweeping disc cylinder, 412-Parallelogram connecting rod, 413-Sweeping disc, 414-Rotating seat, 415-Pin, 416-Telescopic cylinder, 42-Vehicle body. Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The purpose of this utility model is to provide a leaf collection vehicle to solve the problems existing in the prior art, so that the leaf collection device of the leaf collection vehicle can prevent clogging.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] This embodiment provides a leaf collection vehicle, such as... Figure 1-5 As shown, a leaf collection vehicle 4 includes a body 42, which is equipped with a negative pressure garbage bin. An internal connecting pipe 314 is installed on the bottom plate of the garbage bin, along with a leaf collection device, a leaf collection device fixing mechanism 3, and a sweeping device 41. The leaf collection device is a straight-through structure used for collecting lightweight debris. Its connection method is as follows: the internal connecting pipe 314 passes through the bottom of the garbage bin and is fixedly connected to it; one end of the leaf collection device is connected and communicates with the bottom of the garbage bin on the body 42; the leaf collection device is connected to the body 42 via the leaf collection device fixing mechanism 3; and one end of the sweeping device 41 is fixedly connected to the bottom of the body. The negative pressure in the garbage bin is created by a fan installed inside the body 42, driven by the vehicle's engine.

[0029] As shown in the figure, the leaf collection device includes a suction port 1 and a suction pipe 31. One end of the suction pipe 31 is connected to one side of the outer shell 11 and communicates with the suction channel, while the other end is detachably connected to and communicates with the bottom of the carriage through the leaf collection device fixing mechanism 3.

[0030] The leaf collection device fixing mechanism 3 includes a pipe fixing device 32 and a suction port lifting device 33. The pipe fixing device 32 includes a first flange 321, a second flange 322 and a pipe fixing bracket 323. The first flange 321 is fitted onto the outside of the inner pipe 314 in the carriage, and the second flange 322 is fitted onto the lower end of the inner pipe 314 in the carriage. The inner pipe 314 passes through the bottom of the carriage and is fixed to the bottom of the garbage bin of the vehicle body 42 through the first flange 321.

[0031] The leaf collecting device is fixed to the vehicle body 42 by the pipe fixing device 32 and the suction port lifting device 33. Specifically, the suction pipe 31 of the leaf collecting device also includes a first fixing pipe 311, a corrugated pipe 312, and a second fixing pipe 313. One end of the first fixing pipe 311 is detachably connected to the lower end of the inner pipe through the second flange 322. The end of the first fixing pipe 311 away from the inner pipe 314 of the vehicle body is fixedly connected to one end of the corrugated pipe 312. The other end of the corrugated pipe 312 is fixedly connected to one end of the second fixing pipe 313. The other end of the second fixing pipe 313 is welded and sealed to the side of the outer shell 11 away from the bottom opening 13 and connected to the suction channel. The second fixing pipe 313 is connected to the moving end of the suction port lifting device 33.

[0032] One end of the tube body fixing bracket 323 is connected to the vehicle body, and the other end of the tube body fixing bracket 323 is welded to one end of the first fixing tube 311.

[0033] The second flange 322 is formed by bolting two flanges together. The first fixed pipe 311 can be disassembled by removing the two flanges. The pipe body fixing bracket 311 is bolted to the vehicle body 42. The first fixed pipe 311 can be disassembled by removing the second flange 322 and the pipe body fixing bracket 311. Thus, it is possible to easily disassemble the vacuum pipe 31 or replace the vacuum pipe assembly with one of different diameters and specifications.

[0034] The suction port lifting device 33 includes a lifting cylinder 331, an upper connecting part 332, and a lower connecting part 333. One end of the upper connecting part 332 is connected to the vehicle body 42, and the other end is hinged to one end of the lower connecting part 333. The other end of the lower connecting part 333 is hinged to the second fixed pipe 313. One end of the lifting cylinder 331 is hinged to the upper connecting part 332, and the other end is hinged to the lower connecting part 333. The lifting cylinder 331 can drive the lower connecting part 333 to rotate relative to the upper connecting part 332, and the lower connecting part 333 can drive the suction port 1 to move vertically. When the suction port 1 is not needed or the ground is uneven and the suction port 1 is easily scratched, the suction port 1 can be lifted by the suction port lifting device 33 (at this time, the corrugated pipe 312 retracts) to prevent the suction port 1 from being damaged. When the ground is relatively flat, the suction port can also be lowered by the suction port lifting device 33 (at this time, the corrugated pipe 312 extends) to make the suction port 1 as close to the ground as possible and improve the suction efficiency. The upper connecting part 332 is preferably a T-shaped beam structure. One end of the vertical beam is installed at the bottom of the vehicle body 42, and a crossbeam ear plate is provided on the crossbeam. The crossbeam ear plate is hinged to the lower ear plate on the lower connecting part 333 through a shaft column. The lower connecting part 333 consists of two parallel connecting beams and a balance beam. Each connecting beam has a square flange on the end away from the upper connecting part 332. The flange is connected to a bushing by bolts. The bushing is hinged to the rotating shaft on the side of the second fixed tube 313. One end of the balance beam is hinged to the lower connecting part 333, and the other end is hinged to the dust suction port 1. The balance beam and the connecting beam form a parallelogram structure, so that the dust suction port 1 remains parallel to the ground.

[0035] In a preferred embodiment, the first fixing pipe 311 is welded to the pipe fixing device 32. One end of the first fixing pipe 311 is fixedly connected to one end of the corrugated pipe 312 with a fastening ring. The other end of the corrugated pipe 312 is fixedly connected to one end of the second fixing pipe 313 with a fastening ring. The other end of the second fixing pipe 313 is welded to the side of the outer shell 11 away from the bottom opening 13 and connects to the dust suction channel. The second fixing pipe 313 is welded to the dust suction port 1 to ensure a seal. A flange is fitted onto the first fixing pipe 311, and a flange is fitted onto the inner tube pipe 314. The first fixing pipe 311 and the inner tube pipe 314 are detachably connected by bolts via the flange, and a rubber sealing strip is embedded in the flange.

[0036] The dust suction port 1 of this leaf collection vehicle includes a housing 11 and a suction port insert 12. The housing 11 has a dust suction channel inside, extending vertically upwards from the bottom of the housing 11. The bottom of the dust suction channel has a bottom opening 13, the plane of which is parallel to the ground and leaves a certain distance from it. A flexible rubber plate is also provided around the circumference of the housing 11 near the bottom opening 13 for cushioning and protection, preventing damage from collisions with the outside. A suction port 14, communicating with the bottom opening 13, is located on the side of the dust suction channel near the bottom. The opening 14 is actually a notch on the side of the outer shell 11 near the bottom of the suction channel. The bottom opening 13 is connected to and passes through the suction port 14. The inner side wall of the outer shell 11 near the bottom opening is preferably flat. The suction port 14 can preferably be set as an arc shape that is slightly curved towards the suction channel in the middle, so as to facilitate the collection of cleaning objects. A suction port insert 12 is provided at the suction port 14. The suction port insert 12 can move towards the suction port 14 to cover the suction port 14 and move away from the suction port 14 to expose the suction port 14. The shape of the suction port insert 12 matches and fits the suction port 14 to form a relatively sealed state.

[0037] The suction port 1 provided in this embodiment connects to one end of the suction channel and the other end of the suction channel to the negative pressure inside the vehicle compartment. The negative pressure inside the vehicle compartment is generated by a fan, enabling leaf collection. By setting the bottom opening 13 and the suction port 14 to be interconnected and pass through each other, that is, without setting any turning structure or unnecessary components between the bottom opening 13 and the suction port 14, and setting the suction channel to be vertical, the complexity of the suction port 1 is reduced, and the garbage will not be blocked when passing through the bottom opening 13 and the suction port 14. The suction port insert 12 can change the size of the suction port 14. The staff usually adjusts the position of the suction port insert 12 according to the size of the garbage and the distance from the garbage to the suction port 14, so that the suction port 14 can adapt to garbage of different volumes, further preventing blockage. When the suction port insert 12 is adjusted to a suitable position, it can also prevent the suction power inside the suction channel from being reduced due to the opening of the suction port 14 being too large. Casters are preferably installed on the side of the suction port 1, so as to facilitate the movement of the suction port 1 with the vehicle when it is installed on the vehicle.

[0038] Preferably, the shape of the suction channel is circular. This shape avoids sharp corners that could cause blockages. The cross-section of the suction channel below, adjacent to the ground, is rectangular, with a length of at least 680 mm and a width of 350-400 mm. This allows debris to smoothly enter and exit the suction channel and into the suction pipe 31, preventing blockages when sucking in large amounts of branches and leaves. Furthermore, the middle section of the suction channel, transitioning from the square suction port to the circular second fixed pipe, is composed of smooth curved surfaces without any obstructions or turns, ensuring unobstructed flow throughout the suction channel, preventing blockages, and improving suction efficiency. It also accommodates the different cross-sectional shapes of the bottom opening 13 and the suction pipe 31, resulting in a smooth transition in the overall shape of the suction port 1. In addition, a connection port that runs through the suction pipe 31 is provided on one side of the suction port 1. The size and shape of the connection port are similar to or the same as the size and shape of the lower opening of the suction pipe 31. This arrangement allows for a smooth transition between the suction port 1 and the suction pipe 31 and maintains the maximum pipe diameter. It also prevents the outer shell at the connection port from bulging inward and forming a dead corner in the suction channel where garbage can accumulate, further preventing the suction port 1 from becoming clogged.

[0039] In a preferred embodiment of this invention, a slider 15 is provided on the outer side of the outer shell 11, and a linear sliding structure 16 is provided on the suction port plate 12. The slider 15 matches the linear sliding structure 16, allowing the suction port plate 12 to slide along the direction of the linear sliding structure 16. The slider 15 and the sliding structure 16 cooperate to allow the suction port plate 12 to slide linearly on the outer shell 11. This linear sliding maintains a constant angle between the suction port plate 12 and the outer shell 11, reducing obstruction of debris and further preventing blockage of the suction port 1. Preferably, the linear sliding structure 16 is a linear strip groove, with the end of the slider 15 extending away from the outer shell 11. This design not only enables linear sliding of the suction port plate 12 but also increases the reliability of the connection between the suction port plate 12 and the outer shell 11.

[0040] In a preferred embodiment of this invention, the leaf collecting device and the leaf collecting device fixing mechanism are a fixed, detachable, and replaceable set of components. There is also a second set of components consisting of suction channels and suction pipes of different diameters. The leaf collecting device fixing mechanism of the second set of components used for replacement is of the same standard size as the leaf collecting device fixing mechanism of the first set of components, facilitating disassembly and installation. The diameter of the suction pipe of the second set of components is smaller than the diameter of the suction pipe 31 of the first set of components, preferably 100-150mm. When the weight of ground debris (such as cola bottles, aluminum cans, etc.) is too large to be sucked up by the first set of components with large diameter and low suction power, which is specifically designed for sucking up large quantities of branches and leaves in spring and autumn, the second set of components with small diameter and high suction power, which is specifically designed for sucking up small quantities of branches and leaves in winter and summer, can be used to suck up the debris smoothly into the pipes and into the vehicle compartment, thus broadening the application scenarios and application time of the product.

[0041] A leaf collection vehicle also includes several cleaning devices 41. One end of the cleaning device 41 is fixedly connected to the bottom of the vehicle body 42. The suction port 14 faces the direction in which the leaf collection vehicle moves. The cleaning device 41 has two sweeping discs 413. Each sweeping disc 413 is located on the side near the suction port 14 and is arranged side by side. The sweeping discs 413 are used to sweep the ground and collect the garbage in front of the suction port 14.

[0042] The leaf collection vehicle provided by this utility model uses a sweeping device 41 to sweep the garbage to the suction port 14 and turn on the leaf collection device. Lightweight objects such as leaves can enter the garbage bin of the vehicle body 4 through the suction channel and suction pipe 31. Due to the leaf collection device fixing mechanism 3 in this embodiment, the suction port 1 is not easily blocked, which greatly improves the suction effect.

[0043] In a preferred embodiment of this invention, the sweeping device 41 includes two sweeping components located on the same side of the bottom of the vehicle body. Each sweeping component includes a sweeping disc cylinder 411, a parallelogram connecting rod 412, and a sweeping disc 413. One end of the sweeping disc cylinder 411 is connected to the vehicle body 42, and the other end is hinged to the parallelogram connecting rod 412. One end of the parallelogram connecting rod 412 is connected to the vehicle body 42, and the other end is connected to the sweeping disc 413. The sweeping disc cylinder 411 can drive the parallelogram connecting rod 412 to move the sweeping disc 413 vertically. When in use, if the ground is uneven or close to the chassis, the sweeping disc cylinder 411 can drive the parallelogram connecting rod 412 to move the sweeping disc 413 upward, preventing damage to the sweeping disc 413. When the ground is relatively flat, the sweeping disc cylinder 411 can also be controlled to drive the parallelogram connecting rod 412 to move the sweeping disc 413 downward, so that the sweeping disc 413 contacts the ground. This lifting device improves the flexibility of the leaf collection vehicle during operation. Preferably, one sweeping device 41 is provided on each side of the vehicle body 42, and the sweeping disc 413 of the sweeping device 41 on each side of the vehicle body 42 is arranged side by side with the suction port 14.

[0044] The sweeping disc 413 includes a hydraulic motor, a motor bracket, and a sweeping head. The hydraulic motor drives the sweeping disc 413 to rotate and is fixedly connected to the motor bracket by bolts. The motor bracket is fixed to the sweeping head. The parallelogram structure includes a first connecting plate, a second connecting plate, a connecting rod, and an adjusting rod. One side of the first connecting plate is fixedly connected to the motor bracket, and one side of the second connecting plate is hinged to the vehicle body 42. The two ends of the connecting rod and the adjusting rod are respectively hinged to the side of the first connecting plate away from the motor bracket and the side of the second connecting plate away from the vehicle body 42, and together they form a parallelogram connecting rod 412 to keep the angle between the sweeping disc 413 and the ground constant.

[0045] At least one end of a parallelogram-shaped connecting rod 412 is hinged to a rotating seat 414. The rotating seat 414 is preferably mounted on a sweeping device 41 near the outer side of the vehicle body. One side of the rotating seat 414 is hinged to the vehicle body 42, and the other side is fixedly connected to a lug plate. A slot is formed on the lug plate, and a pin 415 is movably connected within the slot. One end of the pin 415 is fixedly connected to the parallelogram-shaped connecting rod 412. A telescopic cylinder 416 is also mounted on the vehicle body 42. One end of the telescopic cylinder 416 is hinged to the vehicle body 42, and the other end is hinged to the pin 415. The telescopic cylinder 416 can drive the pin 415 to move within the slot, and the pin 415 can drive the rotating seat 414 to rotate around the connection point between the rotating seat 414 and the vehicle body 42. The telescopic cylinder 416 can drive the rotating seat 414 to rotate the sweeping disc 413 horizontally. At this time, the sweeping disc 413 can sweep up debris further away from the vehicle body 42, expanding the cleaning range and improving the cleaning effect. The groove can fix the movement path of the pin 415, thereby controlling the movement position of the pin 415 and playing a stabilizing role.

[0046] Preferably, the ear plate is perpendicular to the rotating seat 414; also preferably, a first stud is provided on the vehicle body 42, and a second stud is provided on the parallelogram connecting rod 412 (the second stud is preferably provided on the connecting rod), and a tension spring is provided between the first stud and the second stud, with one end of the tension spring connected to the first stud and the other end connected to the connecting rod of the sweeping disc 413. The tension spring can cooperate with the pin 415 to provide a flexible buffering effect when the sweeping disc 413 is working, depending on the condition of the road shoulder and obstacles.

[0047] When in use, the in-vehicle fan is activated to create a negative pressure space inside the vehicle. Debris on the ground can then enter the suction pipe 31 through the suction channel and subsequently enter the vehicle along the suction pipe 31. Because of the suction port 1 used in this embodiment, the leaf collection device is less prone to clogging.

[0048] It should be noted that in the dust suction port 1, leaf collection device fixing mechanism 3 and leaf collection vehicle provided by this utility model, the pipe fixing device 32 and the flange on the first fixing pipe 311 are preferably detachably connected. The above-mentioned detachable connections are preferably bolted connections. Of course, other detachable connection forms such as buckles can also be selected.

[0049] Preferably, the leaf collecting device and the leaf collecting device fixing mechanism 3 are a fixed, detachable, and replaceable assembly. Based on the aforementioned detachable components, the leaf collecting device fixing mechanism 3 can also be a separate fixed, detachable, and replaceable assembly.

[0050] Preferably, at least one set of the above-mentioned detachable and replaceable complete components is provided. The complete components for replacement consist of suction channels and suction pipes of different diameters. For ease of installation, the fixing mechanism of the leaf collection device is of a standard uniform size or a connection structure that can be adaptively adjusted.

[0051] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A leaf collection vehicle comprising a vehicle body (42) provided with a waste bin with negative pressure, a leaf collection device, a leaf collection device fixing mechanism (3) and a sweeping device (41), characterized in that, The leaf collection device has a straight-through structure and its connection method is as follows: one end of the leaf collection device is detachably and fixedly connected to the bottom of the garbage bin of the vehicle body (42) and communicates with it. The leaf collection device is also fixedly connected to the leaf collection device fixing mechanism (3). The leaf collection device fixing mechanism (3) is detachably and fixedly connected to the vehicle body (42). One end of the sweeping device (41) is fixedly connected to the bottom of the vehicle body (42). The leaf collection device includes a suction pipe (31) and a suction port (1). One end of the suction pipe (31) is fixedly connected to the suction port (1), and the other end is fixedly connected to and communicates with the bottom of the garbage bin of the vehicle body (42). The suction port (1) includes a housing (11) and a suction port insert (12). The housing (11) has a suction channel inside. The suction channel extends vertically upward from the bottom of the housing (11) and is connected to the suction pipe (31). The bottom of the suction channel is provided with a bottom opening (13). The suction port (14) is provided on the side of the suction channel near the bottom. The bottom opening (13) is connected to and communicates with the suction port (14). The suction port insert (12) is provided at the suction port (14). The suction port insert (12) can move towards the suction port (14) to cover the suction port (14) and move away from the suction port (14) to expose the suction port (14). The suction port (14) faces the direction of the leaf collection vehicle (4) and the cleaning device (41) has two sweeping discs (413). Each of the sweeping discs (413) is located on the side close to the suction port (14) and is arranged side by side. The sweeping discs (413) are used to sweep the ground and collect the garbage in front of the suction port (14).

2. The leaf collection vehicle according to claim 1, characterized in that: The size of the suction channel is the same as or similar to the size of the suction pipe (31).

3. The leaf collection vehicle according to claim 2, characterized in that: The leaf collecting device fixing mechanism (3) includes a tube fixing frame (32) and a suction port lifting device (33). One end of the tube fixing frame (32) is detachably fixed to the bottom of the vehicle body (42). The suction port lifting device (33) includes a lifting cylinder (331), an upper connecting part (332), and a lower connecting part (333). One end of the upper connecting part (332) is detachably fixed to the vehicle body (42), and the other end is connected to the lower connecting part. One end of (333) is hinged, and the other end of the lower connecting part (333) is hinged to the tube body fixing frame (32). One end of the lifting cylinder (331) is hinged to the upper connecting part (332), and the other end is hinged to the lower connecting part (333). The lifting cylinder (331) can drive the lower connecting part (333) to rotate relative to the upper connecting part (332). The lower connecting part (333) can drive the dust suction port (1) to move vertically.

4. The leaf collection vehicle according to claim 3, characterized in that: The suction pipe (31) includes a first fixed pipe (311), a corrugated pipe (312), and a second fixed pipe (313). The first fixed pipe (311) is fixedly connected to the pipe body fixing frame (32). One end of the first fixed pipe (311) is fixedly connected to one end of the corrugated pipe (312). The other end of the corrugated pipe (312) is fixedly connected to one end of the second fixed pipe (313). The second fixed pipe (313) is fixedly connected to the lower connecting part (333). The other end of the second fixed pipe (313) is fixedly connected to the side of the outer shell (11) away from the bottom opening (13) and communicates with the suction channel.

5. The leaf collection vehicle according to claim 4, characterized in that: The cleaning device (41) includes two cleaning components located on the same side of the bottom of the vehicle body (42). Each cleaning component includes a sweeping disc cylinder (411), a parallelogram connecting rod (412), and a sweeping disc (413). One end of the sweeping disc cylinder (411) is connected to the vehicle body (42), and the other end is hinged to the parallelogram connecting rod (412). One end of the parallelogram connecting rod (412) is connected to the vehicle body (42), and the other end is connected to the sweeping disc (413). The sweeping disc cylinder (411) can drive the parallelogram connecting rod (412) to move the sweeping disc (413) vertically. At least one end of the parallelogram connecting rod (412) is hinged to a rotating seat. (414), one side of the rotating seat (414) is hinged to the vehicle body (42), and the other side is fixedly connected to an ear plate. An arc-shaped groove is provided on the ear plate, and a pin (415) is movably connected in the arc-shaped groove. One end of the pin (415) is fixedly connected to the parallelogram connecting rod (412). The vehicle body (42) is also provided with a telescopic cylinder (416). One end of the telescopic cylinder (416) is hinged to the vehicle body (42), and the other end is hinged to the pin (415). The telescopic cylinder (416) can drive the pin (415) to move in the arc-shaped groove. The pin (415) can drive the rotating seat (414) to rotate around the connection between the rotating seat (414) and the vehicle body (42).

6. A leaf collection vehicle according to claim 5, characterized in that: The outer side of the outer shell (11) is provided with a slider (15), and the suction port plate (12) is provided with a linear sliding structure (16). The slider (15) matches the linear sliding structure (16), and the suction port plate (12) can slide along the direction of the linear sliding structure (16).

7. A leaf collection vehicle according to claim 1, characterized in that: The leaf collecting device and the leaf collecting device fixing mechanism (3) are a set of fixed, detachable and replaceable components.

8. A leaf collection vehicle according to claim 7, characterized in that: It has at least one set of fixed, detachable and replaceable components, which consists of suction channels and suction pipes (31) of different diameters.

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