Dust suction inlet, fallen leaf collecting device and sweeper truck

Abstract

The utility model discloses a dust suction port, fallen leaf collecting device and sweeper truck relates to urban cleaning technical field, including shell and suction port flashboard, the interior of shell is provided with a dust suction channel, the dust suction channel vertically extends upwards from shell bottom, the bottom of dust suction channel is provided with bottom opening, the side face of dust suction channel close to bottom is provided with suction port, and the suction port flashboard is provided with the bottom opening. The bottom opening is connected and communicated with the suction port, a suction port insertion plate is arranged at the suction port, the suction port insertion plate can move towards the suction port to cover the suction port and move away from the suction port to expose the suction port, and the size of the suction port can be changed through the shape and the structure of the suction port to prevent blockage; the dust collection effect of the fallen leaf collecting device using the dust collection opening and the sweeping machine is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of urban cleaning technology, and in particular to a dust suction port, a leaf collection device, and a road sweeper. Background Technology

[0002] In current urban sanitation practices, street vacuum trucks are commonly used. However, traditional street vacuum trucks are prone to clogging their suction ports when collecting garbage, 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 within the suction port cavity. When encountering large, lightweight objects, these objects need to push up the self-adjusting clamping block. If there are many lightweight objects or the suction is insufficient, the self-adjusting clamping block may not be able to be pushed up, leading to suction port blockage. Furthermore, the size of the suction port cannot be adjusted, and large lightweight objects can easily directly block the suction port. Therefore, there is an urgent need for a suction port that can prevent blockage. Utility Model Content

[0003] The purpose of this invention is to provide a dust suction port, a leaf collection device, and a road sweeper to solve the problems existing in the prior art and prevent the dust suction port from becoming clogged.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a dust suction port, including a housing and a suction port insert plate. The housing has a dust suction channel inside, which extends vertically upward from the bottom of the housing. The bottom of the dust suction channel has a bottom opening, and a suction port is provided on the side of the dust 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, and 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.

[0006] 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.

[0007] Preferably, the suction port is further provided with a sensing and control device, and the suction port insert plate is provided with an insert plate driving device. The sensing and control device is signal-connected to the insert plate driving device. The sensing and control device is used to monitor the size of the waste in front of the suction port and the distance from the waste to the suction port and control the insert plate driving device. The insert plate driving device is used to drive the suction port insert plate to move.

[0008] Preferably, the dust extraction channel is further provided with a roller brush, both ends of which are rotatably connected to the inner wall of the outer casing near the bottom opening. The roller brush is also connected to a drive device, which can drive the roller brush to rotate. The roller brush is used to pick up the garbage stuck to the ground.

[0009] Preferably, an auxiliary pipe is also provided on one side of the suction port. One end of the auxiliary pipe is connected to the outer shell and communicates with the suction channel, and the other end of the auxiliary pipe is used to communicate with the negative pressure space inside the vehicle. The diameter of the auxiliary pipe is smaller than the diameter of the suction pipe. The negative pressure in the negative pressure space inside the vehicle is created by a fan installed inside the vehicle body driven by the vehicle's own power or additional power.

[0010] This utility model provides a leaf collection device, including a suction port, a suction pipe, a pipe fixing mechanism, and a suction port lifting device as described above. One end of the suction pipe is connected to one side of the outer shell and communicates with the suction channel. The pipe fixing mechanism and the suction port lifting device are both mounted on the vehicle body. The suction pipe is connected to the vehicle body through the pipe fixing mechanism and the suction port lifting device.

[0011] Preferably, the suction pipe includes a first fixed pipe, a corrugated pipe, a second fixed pipe, and an inner tube pipe. The pipe fixing mechanism includes a first flange, a second flange, and a pipe fixing bracket. The first flange is sleeved on the outside of the inner tube pipe, and the second flange is sleeved on the lower end of the inner tube pipe. The inner tube pipe is connected to the vehicle body through the first flange. One end of the first fixed pipe is detachably connected to the lower end of the inner tube pipe through the second flange. One end of the pipe fixing bracket is connected to the vehicle body. The first fixed pipe is fixedly connected to the pipe fixing bracket. The end of the first fixed pipe away from the inner tube pipe is fixedly connected to one end of the corrugated pipe. The other end of the corrugated pipe is fixedly connected to one end of the second fixed pipe. 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. The second fixed pipe is connected to the movable end of the suction port lifting device.

[0012] Preferably, it also includes a suction port lifting device, which includes a lifting cylinder, an upper connecting part, and a lower connecting part. One end of the upper connecting part is used to connect 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 the movable end and is hinged to the second fixed tube. 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 movable end to rotate relative to the upper connecting part and drive the suction port to move vertically.

[0013] This utility model also provides a road sweeper, including several sweeping devices, a vehicle body, and the aforementioned leaf collection device. One end of the tube fixing frame is fixedly connected to the bottom of the vehicle body, and one end of the sweeping device is fixedly connected to the bottom of the vehicle body. The suction port faces the direction of travel of the road sweeper. The sweeping device has two sweeping discs, each of which is located on the side near the suction port and arranged side by side. The sweeping discs are used to sweep the ground and collect garbage in front of the suction port.

[0014] 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.

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

[0016] The dust suction port provided by this utility model features a bottom opening that connects and runs through the suction port, eliminating any bends or unnecessary components between them, thus reducing complexity and preventing blockage by debris. The vertical suction channel further reduces its complexity and prevents blockage. The suction port insert allows for adjustment of the port size to accommodate different volumes of debris, further preventing blockage. It also allows for adjustment to a suitable position, preventing reduced suction power due to an overly large opening. Therefore, the dust suction port provided by this utility model, with its interconnected bottom opening and vertical suction channel, reduces overall complexity and prevents blockage at the end of the suction channel. The movable suction port insert allows for adjustment of the port size, preventing blockage and ensuring that the suction power is not reduced due to an overly large opening. 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] Fig. 1 This is a schematic diagram of the structure of the dust suction port provided by this utility model;

[0019] Fig. 2 A schematic diagram of the internal structure of the dust suction port provided by this utility model;

[0020] Fig. 3 A schematic diagram of the auxiliary pipe for installing the dust suction port provided by this utility model;

[0021] Fig. 4 A schematic diagram of the leaf collection device provided by this utility model without the corrugated pipe installed;

[0022] Fig. 5 A schematic diagram of the suction pipe in the leaf collection device provided by this utility model;

[0023] Fig. 6 A schematic diagram of the sweeping device in the road sweeper provided by this utility model;

[0024] Fig. 7 This is a structural schematic diagram of the road sweeper provided by this utility model;

[0025] 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, 17-Roller brush, 2-Auxiliary pipe, 3-Leaf collection device, 31-Suction pipe, 311-First fixed pipe, 312-Corrugated pipe, 313-Second fixed pipe, 32-Pipe body fixing mechanism, 321-First flange, 322-Second flange, 323-Pipe body fixing frame, 33-Suction port lifting device, 331-Lifting cylinder, 332-Upper connecting part, 333-Lower connecting part, 4-Sweeper vehicle, 41-Sweeping device, 411-Sweeping disc cylinder, 412-Parallelogram connecting rod, 413-Sweeping disc, 414-Rotating seat, 415-Pin shaft, 416-Telescopic cylinder, 42-Vehicle body. Implementation

[0026] 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.

[0027] The purpose of this invention is to provide a dust suction port, a leaf collection device, and a road sweeper to solve the problems existing in the prior art and to prevent the dust suction port from becoming clogged.

[0028] 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. Example

[0029] This embodiment provides a dust suction port 1, such as Figs. 1-3As shown, the device includes a housing 11 and a suction port plate 12. The housing 11 has an internal suction channel that extends vertically upwards from the bottom. The bottom of the suction channel has a bottom opening 13, the plane of which is parallel to the ground and has a certain distance between it and the ground. A flexible rubber plate is also provided around the periphery of the housing 11 near the bottom opening 13 for cushioning and protection, preventing damage from collisions with the outside. A suction port 14 (the suction port 14 is the external suction port) is provided on the side of the suction channel near the bottom, connecting to the bottom opening 13. The shell 11 has a notch on the side 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 shell 11 near the bottom opening is preferably flat. The suction port 14 is preferably set as an arc shape that is slightly curved towards the suction channel in the middle, which is convenient for collecting the 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.

[0030] The suction port 1 provided in this embodiment connects one end of the suction channel to the suction channel, and the other end of the suction channel connects to the negative pressure space inside the vehicle, enabling vacuuming operations. 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 structures 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.

[0031] Preferably, the shape of the suction channel is such that the cross-sectional dimensions at both ends are larger than the cross-sectional dimensions in the middle of the suction channel. This shape increases the dimensions of the bottom opening 13 and the connection between the suction channel and the suction pipe 31. Preferably, the lower cross-sectional shape of the suction channel 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 enter the suction pipe 31, preventing blockage. Furthermore, the smaller cross-sectional dimensions in the middle of the suction channel compared to the ends also provide good airflow, increasing the wind speed in the middle of the suction channel and improving suction efficiency. It also accommodates the different cross-sectional shapes of the bottom opening 13 and the suction pipe 31, ensuring 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, preventing the outer shell at the connection port from bulging inward and forming a dead corner in the suction channel where garbage can accumulate, thus further preventing the suction port 1 from becoming clogged.

[0032] In a preferred embodiment of this first example, 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, and the suction port plate 12 can 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. The linear sliding form can maintain a constant angle between the suction port plate 12 and the outer shell 11, reduce obstruction of debris, and further prevent clogging of the suction port 1. Preferably, the linear sliding structure 16 is a linear strip groove, with the end of the slider 15 away from the outer shell 11 extending out of the strip groove. This form can realize the linear sliding of the suction port plate 12 and also increase the reliability of the connection between the suction port plate 12 and the outer shell 11.

[0033] In a preferred embodiment of this first example, a sensing and control device is further provided at the suction port 14, and an insertion plate driving device is provided on the suction port insertion plate 12. The sensing and control device is signal-connected to the insertion plate driving device. The sensing and control device is used to monitor the size of the waste in front of the suction port 14 and the distance from the waste to the suction port, and to control the insertion plate driving device. The insertion plate driving device is used to drive the suction port insertion plate 12 to move. Preferably, the sensor is a lidar sensor or an infrared sensor. These two types of sensors can accurately measure the size of the waste collected by the sweeping disc to the millimeter level. The sensor acquires three-dimensional point cloud data of the object, which can accurately measure the size of the waste and the distance from the waste to the suction port 14. Based on the measurement results, the computer inside the controller calculates the distance that the suction port insertion plate 12 needs to move, and according to a preset program, precisely controls the insertion plate driving device according to a certain ratio, so that the suction port 14 forms an opening large enough for the waste to pass through. In one practical embodiment, when the sensor measures the height of the garbage to be 3cm, the suction port plate 12 maintains a distance of 3.5cm from the ground; when the sensor measures the height of the garbage to be 1cm, the suction port plate maintains a distance of 1.5cm from the ground.

[0034] To further enhance the cleaning effect, in a preferred embodiment of this first example, a roller brush 17 is also provided inside the suction channel. Both ends of the roller brush 17 are rotatably connected to the inner wall of the outer casing 11 near the bottom opening 13. The roller brush 17 is also connected to a drive device, which drives the roller brush 17 to rotate. The roller brush 17 is used to pick up debris stuck to the ground. During use, when the vehicle moves forward, the roller brush 17 rotates counterclockwise, contacting the ground and picking up leaves, waste paper, and other debris that are difficult to directly suck up, further enhancing the cleaning effect of the suction port 1.

[0035] In a preferred embodiment of this first example, an auxiliary pipe 2 is also provided on one side of the suction port 1. The auxiliary pipe 2 is preferably a corrugated pipe. One end of the auxiliary pipe 2 is connected to the outer shell 11 and communicates with the suction channel, while the other end is used to communicate with the negative pressure space inside the vehicle. The diameter of the auxiliary pipe 2 is smaller than the diameter of the suction pipe 31. The diameter of the auxiliary pipe 2 is preferably 100-150mm. When the weight of the garbage on the ground (such as cola bottles, aluminum cans, etc.) is large and it is difficult to directly enter the suction channel, the use of the thinner auxiliary pipe 2 can provide additional suction to the suction port 1, increase the negative pressure inside the suction port 1, and smoothly suck the garbage into the pipe and into the vehicle through the auxiliary pipe 2.

[0036] In addition, the auxiliary pipe 2 in this invention can also be directly applied to the dust suction port in the prior art, which can increase the internal negative pressure and prevent blockage. Example

[0037] This embodiment provides a leaf collection device 3, such as Figs. 4-5As shown, it includes the suction port 1, suction pipe 31, pipe body fixing mechanism 32, and suction port lifting device 33 in Embodiment 1. One end of the suction pipe 31 is connected to one side of the outer shell 11 and communicates with the suction channel. The pipe body fixing mechanism 32 and the suction port lifting device 33 are both installed on the vehicle body 42. The suction pipe 31 is connected to the vehicle body 42 through the pipe body fixing mechanism 32 and the suction port lifting device 33.

[0038] In this embodiment, the leaf collection device 3 is fixed to the vehicle body 42 by the pipe fixing mechanism 32. When in use, the fan inside the vehicle is started to create a negative pressure space, and the garbage on the ground can enter the suction pipe 31 through the suction channel and then enter the vehicle along the suction pipe 31. Because the suction port 1 in Embodiment 1 is used, the leaf collection device 3 is not easily clogged.

[0039] In a preferred embodiment of this first embodiment, the vacuum pipe 31 includes a first fixed pipe 311, a corrugated pipe 312, a second fixed pipe 313, and an inner tube connection 314. The pipe fixing mechanism 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 tube connection 314, and the second flange 322 is fitted onto the lower end of the inner tube connection 314. The inner tube connection 314 is connected to the bottom of the garbage bin on the vehicle body 42 via the first flange 321. One end of the first fixed pipe 311 is connected to the second flange 323. The lower end of the inner connecting pipe 314 is detachably connected to the pipe body 323. One end of the pipe body fixing bracket 323 is connected to the vehicle body. The first fixing pipe 311 is fixedly connected to the pipe body fixing bracket 323. The end of the first fixing pipe 311 away from the inner connecting pipe 314 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 connects to the dust collection channel. The second fixing pipe 313 is connected to the moving end of the suction port lifting device 33. The second flange 322 is formed by two flanges spliced ​​together by bolts. The first fixing pipe 311 can be removed by removing the two flanges. The pipe body fixing bracket 311 is connected to the vehicle body 42 by bolts. The first fixing pipe 311 can be removed by removing the second flange 322 and the pipe body fixing bracket 311. Thus, it is possible to easily remove the dust collection pipe 31 or replace the dust collection pipe assembly with different diameter and size specifications.

[0040] In a preferred embodiment of this first embodiment, the leaf collection device 3 further includes a suction port lifting device 33. 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 used to connect 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 a movable end and is hinged to the second fixed tube 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 movable end of the lifting cylinder 331 can rotate relative to the upper connecting part 332 and 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 raised 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) so that the suction port 1 can contact the ground as much as possible and improve the suction efficiency.

[0041] 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. Example

[0042] This embodiment also provides a road sweeper 4, such as Figs. 6-7 As shown, the vehicle includes several sweeping devices 41, a vehicle body 42, and a leaf collection device 3 as described in Embodiment 2. One end of the pipe fixing frame 32 is fixedly connected to the bottom of the vehicle body 42, and one end of the sweeping device 41 is fixedly connected to the bottom of the vehicle body 42. The suction port 14 faces the direction of the road sweeper 4's movement. The sweeping device 41 has two sweeping discs 413, each of which is located on the side near the suction port 14 and 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.

[0043] The sweeper 4 provided by this utility model uses the sweeping device 41 to sweep the garbage to the suction port 14 and turns on the leaf collection device 3. The garbage can then enter the vehicle through the suction channel and suction pipe 31. Because the leaf collection device 3 in embodiment 2 is set, the suction port 1 is not easily blocked, which greatly improves the suction effect.

[0044] In a preferred embodiment of this first embodiment, 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 sweeper truck 4 during operation. Preferably, two sweeping devices 41 are provided on each side of the vehicle body 42, with the two sweeping devices 41 on each side of the vehicle body 42 arranged side by side and the sweeping disc 413 close to the suction port 14.

[0045] 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.

[0046] 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. An arc-shaped groove is formed on the lug plate, and a pin 415 is movably connected within the arc-shaped groove. One end of the pin 415 is fixedly connected to the parallelogram-shaped connecting rod 412. A telescopic cylinder 416 is also provided 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 arc-shaped groove, 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 arc-shaped groove can increase the range of movement of the pin 415, thereby preventing the pin 415 from moving too fast and playing a buffering role.

[0047] 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.

[0048] It should be noted that in the dust suction port 1, leaf collection device 3, and sweeper 4 provided by this utility model, the pipe fixing frame 32 and the flange on the first fixing pipe 311 are preferably detachably connected. The lower part of the corrugated pipe 312, including the dust suction port 1, upper connecting part 332, lower connecting part 333, and suction cylinder, are all preferably detachably connected. The sweeping disc cylinder 411 and the parallelogram connecting rod 412 are preferably detachably connected, and all components of the parallelogram connecting rod 412 are preferably detachably connected. The aforementioned detachable connections are preferably bolted connections; however, other detachable connection forms such as snap-fit ​​connections can also be used.

[0049] 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 dust suction port (1), characterized in that: Includes a housing (11) and a suction port insert (12). The housing (11) has a suction channel inside, which extends vertically upward from the bottom of the housing (11). The bottom of the suction channel has a bottom opening (13), and a 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).

2. The suction port (1) according to claim 1, 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).

3. The suction port (1) according to claim 1, characterized in that: A sensor control device is also provided at the suction port (14), and a plate drive device is provided on the suction port plate (12). The sensor control device is signal connected to the plate drive device. The sensor control device is used to monitor the size of the garbage in front of the suction port (14) and the distance from the garbage to the suction port (14) and control the plate drive device. The plate drive device is used to drive the suction port plate (12) to move.

4. The suction port (1) according to claim 1, characterized in that: The dust extraction channel is also equipped with a roller brush (17). Both ends of the roller brush (17) are rotatably connected to the inner wall of the outer shell (11) near the bottom opening (13). The roller brush (17) is also connected to the drive device. The drive device can drive the roller brush (17) to rotate. The roller brush (17) is used to roll up the garbage stuck on the ground.

5. The suction port (1) according to claim 1, characterized in that: An auxiliary pipe (2) is also provided on one side of the suction port (1). One end of the auxiliary pipe (2) is connected to the outer shell (11) and communicates with the suction channel. The other end of the auxiliary pipe (2) is used to communicate with the negative pressure space inside the vehicle. The diameter of the auxiliary pipe (2) is smaller than the diameter of the suction pipe (31).

6. A leaf collection device (3), characterized in that: Includes a suction port (1), a suction pipe (31), a pipe fixing mechanism (32), and a suction port lifting device (33) according to any one of claims 1-5, wherein one end of the suction pipe (31) is connected to one side of the outer shell (11) and communicates with the suction channel, the pipe fixing mechanism (32) and the suction port lifting device (33) are both mounted on the vehicle body (42), and the suction pipe (31) is connected to the vehicle body (42) through the pipe fixing mechanism (32) and the suction port lifting device (33).

7. The leaf collection device (3) according to claim 6, characterized in that: The suction pipe (31) includes a first fixed pipe (311), a corrugated pipe (312), a second fixed pipe (313), and an in-carriage pipe (314). The pipe fixing mechanism (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 in-carriage pipe (314), and the second flange (322) is fitted onto the lower end of the in-carriage pipe (314). The in-carriage pipe (314) is connected to the vehicle body (42) through the first flange (321). One end of the first fixed pipe (311) is connected to the in-carriage pipe through the second flange (322). The lower end forms a detachable connection. One end of the tube body fixing bracket (323) is connected to the vehicle body. The first fixing tube (311) is fixedly connected to the tube body fixing bracket (323). The end of the first fixing tube (311) away from the inner tube pipe (314) 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 tube (313). The other end of the second fixing tube (313) is fixedly connected to the side of the outer shell (11) away from the bottom opening (13) and communicates with the dust suction channel. The second fixing tube (313) is connected to the moving end of the suction port lifting device (33).

8. The leaf collection device (3) according to claim 7, characterized in that: 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 used to connect 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 a movable end and is hinged to the second fixed tube (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 movable end to rotate relative to the upper connecting part (332) and drive the suction port (1) to move vertically.

9. A road sweeper (4), characterized in that: The vehicle includes several sweeping devices (41), a vehicle body (42), and a leaf collection device (3) according to any one of claims 6-8. One end of the tube fixing frame (323) is fixedly connected to the bottom of the vehicle body (42), and one end of the sweeping device (41) is fixedly connected to the bottom of the vehicle body (42). The suction port (14) faces the direction of the road sweeper (4)'s movement. The sweeping device (41) has two sweeping discs (413), each of which is located on the side near the suction port (14) and arranged side by side. The sweeping discs (413) are used to sweep the ground and collect garbage in front of the suction port (14).

10. The road sweeper (4) according to claim 9, 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).

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