A sweeper vehicle having a sweeping mechanism

Abstract

This invention discloses a sweeper vehicle with a sweeping mechanism, comprising: a vehicle body, a set of storage slots below the vehicle body, and a sweeping assembly disposed in the storage slots. The sweeping assembly includes: a side brush assembly for sweeping the ground, a first drive assembly for controlling the side brush assembly to rise / fall from the storage slots, and a second drive assembly for controlling the side brush assembly to rotate from below the vehicle body toward the inner / outer side. Through the coordinated control of the first and second drive assemblies, this invention enables the brush disc to adapt to different road conditions, achieving a combined vertical lifting adjustment range of ±10cm and a horizontal swing angle of ±45°. This effectively solves the problem of poor dust removal rates in areas such as brick joints and asphalt pavement holes caused by the flat arrangement of traditional brush bristles, improving the cleaning of dust from gaps. Furthermore, to address severe secondary dust generation, the dust suppression assembly works in conjunction with the internal suction area to absorb internal dust and simultaneously suppress external dust.

Description

Technical Field

[0001] This invention relates to a sweeper vehicle with a road sweeping mechanism, belonging to the field of sweeper vehicle technology. Background Technology

[0002] Sweeping vehicles are widely used in cleaning operations on urban roads, industrial parks, airport runways, and large parking lots, primarily for removing pollutants such as fallen leaves, gravel, dust, and oil residue from roads. With the increasing demands for urban environmental management, the requirements for sweeping equipment have evolved from simple surface cleaning to multi-functional integration, encompassing adaptability to complex road conditions, deep cleaning of crevices, and dust suppression. For example, in urban road sweeping, it is necessary to simultaneously handle the rapid collection of large particles of debris, the removal of stubborn stains from curb crevices, and the suppression of dust during operation.

[0003] Existing sweepers generally use a single rotating side brush with a central suction port, with uniform brush bristle length and limited functionality. This type of structure can only achieve a "one-size-fits-all" cleaning of surface debris. The traditional even arrangement of brush bristles results in poor dust removal rates in areas such as brick seams and asphalt pavement holes, and also causes serious secondary dust generation. The high-speed rotating side brush raises a large amount of dust during sweeping. Although existing equipment is equipped with a spray system, the water mist coverage is not synchronized with the brush disc's movement trajectory, resulting in low dust suppression efficiency. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sweeper with a sweeping mechanism to solve the problems of the existing technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A sweeper vehicle with a sweeping mechanism includes: a vehicle body, a set of storage slots provided below the vehicle body, and a sweeping assembly disposed in the storage slots, the sweeping assembly including:

[0007] A side brush assembly for cleaning the ground, a first drive assembly for controlling the side brush assembly to rise / fall from the storage slot, and a second drive assembly for controlling the side brush assembly to rotate from below the vehicle body toward the inner / outer side.

[0008] The side brush assembly includes a brush disc connected to the second drive assembly, a third drive assembly that controls the brush disc to rotate clockwise / counterclockwise, and a bristle group disposed below the brush disc. The bristle group is arranged from the outside to the inside as a brushing area, a seam washing area, and an inner suction area. The bristles in the brushing area, seam washing area, and inner suction area are gradually shortened from the outside to the inside.

[0009] The brush disc is driven to rotate by the third drive component, and the brush sweeping area is used to perform coarse cleaning of large garbage on the road surface. The crevice washing area is used to perform airflow impact on the road surface crevice. The internal suction area is used to internally absorb the dust carried by the airflow impact and collect it into the storage box inside the vehicle body.

[0010] The brush disk also includes a dust suppression component on its side. The brush disk is driven to rotate by the third drive component, and the dust suppression component radiates small water droplets outward to suppress the dust carried up by the brushing area.

[0011] The control module is electrically connected to the first drive component, the second drive component, and the third drive component.

[0012] As a further improvement, visual monitoring components are also located on both sides of the vehicle body. These components monitor the road surface morphology and feed back different road surface morphology parameters to the control module. The control module, in conjunction with the first drive component, controls the descent height of the side brush component according to different road surface morphologies.

[0013] The visual monitoring component monitors the road surface width and obstacles, and feeds the parameters back to the control module. The control module, in conjunction with the second drive component, controls the lateral extension distance of the side brush component based on the road surface width and obstacle parameters.

[0014] As a further improvement, a vacuuming component is also included, disposed in the storage slot. The vacuuming component in its stored state is positioned above the cleaning component in its stored state. The vacuuming component includes:

[0015] The system includes a suction nozzle assembly, a fourth drive assembly that controls the suction nozzle assembly to extend downward from the storage slot, and a fifth drive assembly that controls the suction nozzle assembly to rotate and extend outward from below the vehicle body. The fourth and fifth drive assemblies are electrically connected to the control module.

[0016] As a further improvement, the first drive assembly includes a hydraulic cylinder connected to the second drive assembly and a hydraulic pump with a hydraulic valve disposed inside the vehicle body. The hydraulic cylinder mounted on the hydraulic pump drives the second drive assembly and the side brush to move up and down. The hydraulic valve, hydraulic pump, and control module are electrically connected.

[0017] As a further improvement, the second drive assembly includes a first motor mounted below the hydraulic cylinder and a support rod mounted on the motor drive rod. The first motor is electrically connected to a control module, and the control module, in cooperation with the first motor, controls the support rod to rotate and extend from below the vehicle body toward the inner / outer side.

[0018] As a further improvement, the third drive assembly includes a main disc fixedly mounted to the support rod, a secondary disc rotatably mounted on the side of the main disc, a second motor mounted above the main disc, and a gear mounted on the output shaft of the second motor. The brush disc includes a secondary disc rotatably mounted on the side of the main disc, and the secondary disc has an inner ring with teeth on its upper surface. The teeth cooperate with the gear to drive the secondary disc to rotate.

[0019] As a further improvement, the brushing area includes a plurality of first bristles installed in the outer ring area below the sub-disc body. The first bristles are cylindrical bristles with slightly curved ends facing outwards, and the outer layer of the first bristles is covered with a wear-resistant layer.

[0020] As a further improvement, the sewing and washing area includes several second bristles installed in the middle ring area below the sub-disc body, several air outlets located below the main disc body near the second bristles, and an air pump located above the main disc body. The air pump is electrically connected to the control module and is connected to the air outlets. The second bristles are tapered filaments with serrated edges.

[0021] As a further improvement, the internal suction area includes a suction hole located in the middle of the lower part of the main disc body. The suction hole is connected to a suction air pump in the vehicle body. The suction air pump is electrically connected to a control module, and the suction hole is controlled by the suction air pump to suck dust into the storage box.

[0022] As a further improvement, the dust suppression component includes a main flow channel disposed inside the main disc body, a secondary flow channel disposed inside the side ring of the secondary disc body, and several outlet holes connecting the secondary flow channels to the outside. The outlet holes are inclined downward at 45°-50°. The main flow channel is connected to the water storage area inside the vehicle body through a pipe for water supply. The secondary flow channels are connected to the main flow channel. When the secondary disc body is rotated, the main flow channel guides the water flow into the secondary flow channel. Under the action of centrifugal force, the water in the secondary flow channel is dispersed through the outlet holes.

[0023] As a further improvement, the side brush assembly can be replaced with a cleaning assembly, the cleaning assembly including a motor mount mounted below the second drive assembly;

[0024] A steel ball motor, the upper half of which is fixedly mounted on the motor base, and the lower half which can rotate relative to the upper half and is fixedly connected to the disc body;

[0025] The dust suppression nozzle is fitted to the lower half of the steel ball motor;

[0026] The brush body is installed below the disc body, and a cover plate is provided above the disc body. The brush body is limited and fixed above the cover plate, and the motor seat is fixedly connected to the cover plate.

[0027] An air blowing assembly, including an air blowing pipe and an air blowing nozzle, is mounted to the bottom of the disc body via a mating flange, and the air blowing nozzle extends to the outside of the disc body;

[0028] The water inlet is located on the upper part of the steel ball motor;

[0029] A sealing ring is disposed between the steel ball motor and the disc body;

[0030] The top of the air blowing pipe passes through the upper half of the steel ball motor, and a closed water cavity is formed between the inner cavity of the upper half of the steel ball motor and the outer wall of the air blowing pipe. The water inlet is connected to the water cavity.

[0031] When the lower half of the steel ball motor rotates, it drives the disc, the dust-suppressing nozzle and the air-blowing assembly to rotate synchronously. The water in the water chamber is thrown out through the dust-suppressing nozzle under the action of centrifugal force, thereby achieving rotational dust suppression.

[0032] The beneficial effects of this invention are:

[0033] This invention utilizes the coordinated control of the first and second drive components to enable the brush disc to adapt to different road conditions, achieving a combined vertical lifting adjustment range of ±10cm and a horizontal swing angle of ±45°. When the device reaches the junction of the curb and the road surface, the control module and the vision detection component work together to monitor changes in ground height in real time, driving the side brush to perform micro-oscillation compensation at a frequency of 0.5Hz, ensuring that the brush bristle tips always maintain an optimal contact gap of 3-5mm with the ground.

[0034] The brush surface has three sets of bristles arranged in a functional gradient to form a physical-pneumatic collaborative operation. The outermost ring of the longest nylon bristles forms the brushing zone, which is driven by the third drive component to rotate at a high speed of 400 rpm to generate a centrifugal force field, which can effectively push and scoop solid waste with a diameter ≤5cm;

[0035] The middle carbon fiber brush bristle seam cleaning zone forms a 30° impact angle with the vehicle's direction of travel when rotating. Combined with the annular air passage at the bottom of the brush disc, it uses the Bernoulli effect to generate local negative pressure, causing compressed air to be injected into the road surface gaps at a speed of 80m / s.

[0036] The innermost suction zone, together with the central suction port, creates a Venturi effect, accelerating the suction of dust particles disturbed in the crevices into the collection box. This layered operation mode allows for 1.8 times the amount of pollutants removed in a single cleaning cycle compared to traditional equipment, with a particularly significant 92% improvement in the removal efficiency of surface contaminants on asphalt pavements.

[0037] A dust suppression component is installed for dust control. Eighteen sets of atomizing outlet holes, each 50μm in diameter, are evenly distributed radially along the brush disc to ensure a continuous water curtain barrier when the brush disc rotates. When the third drive component rotates the brush disc, centrifugal force causes water in the storage chamber to be evenly transported through pipes to the outlet holes, generating a fan-shaped mist curtain with a coverage angle of up to 120° in the tangential direction of rotation.

[0038] It effectively solves the problem of poor dust removal rate in areas such as brick joints and asphalt pavement holes caused by the flat arrangement of traditional brush bristles, improves the cleaning of dust in gaps, and addresses the problem of severe secondary dust by combining the dust suppression component with the internal suction zone to absorb internal dust and suppress external dust simultaneously. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a side view of the sweeping components of a sweeper with a sweeping mechanism according to the present invention in an unfolded state.

[0041] Figure 2 This is a rear view of the sweeping components of a sweeper with a sweeping mechanism according to the present invention in an unfolded state.

[0042] Figure 3 This is a bottom view of the sweeping components of a sweeper with a sweeping mechanism according to the present invention in an unfolded state.

[0043] Figure 4 This is a side view of a sweeper with a sweeping mechanism according to the present invention in its stored state.

[0044] Figure 5 This is a bottom view of a sweeper with a sweeping mechanism according to the present invention in its stowed state.

[0045] Figure 6 This is a side view structural diagram of the unfolded state of a side brush component according to the present invention.

[0046] Figure 7 yes Figure 6 A partially enlarged cross-sectional schematic diagram of the middle brush disk.

[0047] Figure 8 This is a bottom view of a brush assembly according to the present invention.

[0048] Figure 9 This is a schematic diagram of the module connection of a sweeper with a sweeping mechanism according to the present invention.

[0049] Figure 10 This is a side view structural diagram of the unfolded state of a side brush component according to the present invention.

[0050] Figure 11 yes Figure 10 Top view of the middle brush component.

[0051] Figure 12 yes Figure 11 Mid-section view.

[0052] Figure 13 This is a schematic diagram of the module connection of a sweeper with a sweeping mechanism according to the present invention.

[0053] 1. Vehicle body; 11. Storage slot; 12. Storage box; 2. First drive assembly; 3. Second drive assembly; 4. Brush disc; 41. Third drive assembly; 42. Brush bristle assembly; 421. Brushing area; 422. Seam cleaning area; 423. Internal suction area; 5. Dust suppression assembly; 6. Control module; 21. Hydraulic cylinder; 22. Hydraulic pump; 31. First motor; 32. Support rod; 43. Main disc; 44. Secondary disc; 411. Second motor; 412. Gear; 413. Ring gear; 414. Lubricating ball; 4211. First brush bristles; 4212. Wear-resistant layer ; 4221, Second brush bristles; 4222, Air outlet; 4223, Air pump; 4231, Suction hole; 4232, Suction air pump; 51, Main flow channel; 52, Secondary flow channel; 53, Outlet hole; 54, Pipe; 8, Vision monitoring component; 71, Fourth drive component; 72, Fifth drive component; 9, Motor mount; 91, Steel ball motor; 92, Disc; 93, Dust suppression spray pipe; 94, Brush body; 95, Cover plate; 96, Air blowing pipe; 961, Connecting flange; 97, Air blowing nozzle; 98, Water inlet; 99, Sealing ring; 910, Water chamber. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] Example 1

[0057] Reference Figure 1-9 As shown, a sweeper vehicle with a sweeping mechanism includes:

[0058] Vehicle body 1, with a set of storage slots 11 provided below the vehicle body 1, and a cleaning component disposed in the storage slots 11, the cleaning component including:

[0059] The side brush assembly for cleaning the ground includes a first drive assembly 2 that controls the side brush assembly to rise / fall from the storage slot 11, and a second drive assembly 3 that controls the side brush assembly to rotate from below the vehicle body 1 toward the inner / outer side.

[0060] The side brush assembly includes a brush disk 4 connected to the second drive assembly 3, a third drive assembly 41 that controls the clockwise / counterclockwise rotation of the brush disk 4, and a bristle group 42 disposed below the brush disk 4. The bristle group 42 is arranged from the outside to the inside as a sweeping area 421, a seam washing area 422, and an inner suction area 423. The bristles of the sweeping area 421, the seam washing area 422, and the inner suction area 423 are gradually shortened from the outside to the inside.

[0061] The brush plate 4 is driven to rotate by the third drive component 41, and the brush sweeping area 421 performs coarse cleaning of large garbage on the road surface, the seam washing area 422 performs airflow impact on the road surface seams, and the internal suction area 423 internally absorbs the dust carried by the airflow impact and collects it into the internal storage box 12 of the vehicle body 1.

[0062] The brush disk 4 also includes a dust suppression component 5 on its side. The brush disk 4 is driven to rotate by the third drive component 41. The dust suppression component 5 radiates small water droplets outward to suppress the dust brought up by the brushing area 421.

[0063] The control module 6 is electrically connected to the first drive component 2, the second drive component 3, and the third drive component 41.

[0064] In operation: The control module 6 controls the first drive component 2 to drive the side brush component and the second drive component 3 to descend from the storage slot 11 to the working height.

[0065] The control module 6 controls the second drive component 3 to drive the side brush component to rotate and extend outward from below the vehicle body 1 to the working angle.

[0066] In conjunction with the third drive component 41, the brush bristle group 42 is driven to rotate, and the three-level design is used to perform deep cleaning of the ground layer by layer. In conjunction with the dust suppression component 5, the dust raised on the outermost layer is suppressed in a certain range.

[0067] In non-working state: the control component controls the third drive component 41 to stop, and cooperates with the second drive component 3 to rotate the side brush component from the outside of the vehicle body 1 toward the bottom of the vehicle body 1 to the initial angle;

[0068] The control component works in conjunction with the first drive component 2 to raise and store the side brush component.

[0069] Through the coordinated control of the first drive component 2 and the second drive component 3, the brush disc 4 can adapt to different road conditions and complete a composite movement with a vertical lifting adjustment range of ±10cm and a horizontal swing angle of ±45°. When the device moves to the junction of the curb and the road surface, the control module 6 and the vision detection component work together to monitor the changes in ground height in real time, and drive the side brush to perform micro-oscillation compensation at a frequency of 0.5Hz, so that the brush tip always maintains an optimal contact gap of 3-5mm with the ground.

[0070] The three sets of bristles on the surface of the brush plate 4 are arranged in a gradient according to functional zones to form a physical-pneumatic collaborative operation. The longest nylon bristles on the outer ring constitute the brushing zone 421, which is driven by the third drive component 41 to rotate at a high speed of 400 rpm to generate a centrifugal force field, which can effectively push and scoop solid waste with a diameter ≤5cm;

[0071] The middle carbon fiber bristle assembly 42 forms a seam cleaning zone 422, which forms an impact angle of 30° with the direction of travel of the vehicle body 1 when rotating. Combined with the annular air passage opened at the bottom of the brush plate 4, the Bernoulli effect is used to generate local negative pressure, so that compressed air is injected into the road surface gap at a speed of 80m / s.

[0072] The innermost suction zone 423 forms a Venturi effect with the central suction port, accelerating the suction of dust particles disturbed by the seam cleaning zone 422 into the collection box 12. This layered operation mode makes the amount of pollutants removed in a single cleaning cycle 1.8 times that of traditional equipment, and the efficiency of removing surface pore pollution in asphalt pavement is particularly significant, reaching 92%.

[0073] A dust suppression component 5 is installed for dust control. Eighteen sets of atomizing outlet holes 53, each with a diameter of 50 μm, are evenly distributed radially along the brush disk 4, ensuring a continuous water curtain barrier when the brush disk 4 rotates. When the third drive component 41 drives the brush disk 4 to rotate, centrifugal force causes water in the storage chamber to be evenly transported to the outlet holes 53 through the pipe 54, generating a fan-shaped mist curtain with a coverage angle of up to 120° in the tangential direction of rotation. Compared to traditional fixed spraying, dynamic spraying increases water mist coverage by 65% ​​and can precisely match the movement trajectory of the side brushes, ensuring that the PM2.5 concentration is stably controlled at 45 μg / m³. 3 The following values ​​are 40% lower than the national standard limits.

[0074] The PLC control module 6 enables millisecond-level coordinated control of the three drive components. When the equipment detects a change in slope, the first drive component 2 starts the height compensation program 0.3 seconds in advance, the second drive component 3 adjusts the tilt angle of the brush plate 4 synchronously, and the third drive component 41 dynamically adjusts the rotational speed fluctuation range of ±50 rpm based on the vibration data fed back by the gyroscope.

[0075] The control mechanism improves the equipment's cleaning consistency to over 95% in complex terrain. In terms of energy management, the system uses machine learning algorithms to establish a cleaning demand-energy consumption model, automatically switching between "economy" and "powerful" modes based on the road surface pollution index, reducing overall energy consumption by 28% while ensuring cleanliness.

[0076] It also includes visual monitoring components 8 located on both sides of the vehicle body 1. The visual monitoring components 8 monitor the road surface morphology and feed back different road surface morphology parameters to the control module 6. The control module 6 cooperates with the first drive component 2 according to different road surface morphologies to control the descent height of the side brush component.

[0077] The visual monitoring component 8 monitors the road width and obstacles, and feeds the parameters back to the control module 6. The control module 6, in conjunction with the second drive component 3, controls the lateral extension distance of the side brush component based on the road width and obstacle parameters.

[0078] Traditional equipment relies on manual preset of side brush height and extension distance, making it difficult to cope with dynamically changing road conditions such as sudden changes in curb height, potholes, and temporary obstacles.

[0079] In fixed operation mode, the side brush assembly is often in an "overdrive" state - for example, it maintains the maximum extension distance in narrow alleys, which not only increases the ineffective energy consumption by about 18% of the total energy consumption, but may also scratch the wall because the outer edge of the side brush extends beyond the vehicle body 1.

[0080] By introducing a visual monitoring component 8, a closed-loop control module 6, consisting of "environmental perception - dynamic decision-making - precise execution," is constructed. This module dynamically adjusts the side brush descent height from 0-10cm based on road surface morphology, ensuring the brush tip maintains optimal contact pressure of 3-5 N / cm with the ground. 2 This prevents debris from being missed or bristles from breaking due to pressure fluctuations.

[0081] By monitoring objects with a diameter of ≥5cm and the sweepable width on the road surface in real time, the side brush extension distance can be dynamically adjusted within a range of ±30cm, ensuring a cleaning coverage rate of ≥95% while reducing the collision risk to 0.3 times per 100 kilometers.

[0082] The working radius of the side brush is automatically adjusted according to actual operational needs, and the extension distance is reduced by 40% in narrow areas of less than 3m.

[0083] The visual monitoring component 8 includes a wide-angle binocular vision sensor and a line laser contour scanner integrated on both sides of the roof:

[0084] It uses a 120° FOV lens to identify environmental elements such as lane lines, green belt boundaries, and temporary roadblocks in real time;

[0085] The distance to obstacles is calculated using a stereo matching algorithm, with a ranging range of 0.5-15m and an error of <1%.

[0086] The line laser profile scanner emits a 64-line laser beam at a frequency of 200Hz to scan the road surface and generate three-dimensional point cloud data, which is used to accurately measure curb height with an accuracy of ±1mm, pothole depth with a resolution of 0.5cm, and slope changes.

[0087] To further suppress the spread of dust, a dust-collecting component is also included, disposed in the storage slot 11. The dust-collecting component in its stored state is located above the cleaning component in its stored state. The dust-collecting component includes:

[0088] The suction nozzle assembly, the fourth drive assembly 71 which controls the suction nozzle assembly to extend downward from the storage slot 11, and the fifth drive assembly 72 which controls the suction nozzle assembly to rotate and extend outward from below the vehicle body 1, the fourth drive assembly 71 and the fifth drive assembly 72 being electrically connected to the control module 6.

[0089] In operation: The control module 6 controls the fourth drive component 71 to drive the vacuuming component and the fifth drive component 72 to descend from the storage slot 11 to the working height.

[0090] The control module 6 controls the fifth drive component 72 to drive the dust suction component to rotate and extend outward from below the vehicle body 1 to the working angle, and to be located behind the side brush component to suck up the dust swept out by the side brush component.

[0091] In non-working state: The control component controls the vacuuming component to stop sucking, and cooperates with the fifth drive component 72 to rotate the vacuuming component from the outside of the vehicle body 1 toward the bottom of the vehicle body 1 to the initial angle;

[0092] The vacuuming component is lifted and stored upwards by the control component in conjunction with the fourth drive component 71.

[0093] It is important to emphasize that the side brush component should be stored only after the nozzle component has been stored.

[0094] The fourth drive component 71 consists of the cooperation between the hydraulic pump 22 and the hydraulic cylinder 21, and the fifth drive component 72 is a motor. Since the design logic of the lifting and rotating structure is consistent with that of the side brush component described above, it will not be elaborated further.

[0095] To enable the control of the side brush assembly to rise / fall in the storage slot 11, the first drive component 2 is refined as follows:

[0096] The first drive assembly 2 includes a hydraulic cylinder 21 connected to the second drive assembly 3 and a hydraulic pump 22 with a hydraulic valve disposed inside the vehicle body 1. The hydraulic cylinder 21 mounted on the hydraulic pump 22 drives the second drive assembly 3 and the side brush to move up and down. The hydraulic valve and the hydraulic pump 22 are electrically connected to the control module 6.

[0097] To enable the control of the side brush assembly to rotate from below the vehicle body 1 towards the inner / outer side, the second drive assembly 3 is refined as follows:

[0098] The second drive assembly 3 includes a first motor 31 mounted below the hydraulic cylinder 21 and a support rod 32 vertically mounted on the shaft of the first motor 31. The first motor 31 is electrically connected to the control module 6. Through the cooperation of the control module 6 and the first motor 31, the support rod 32 is controlled to rotate and extend from below the vehicle body 1 toward the inner / outer side.

[0099] Because the side brush assembly needs to be raised and lowered frequently to adapt to different terrains such as differences in curb height and potholes, the thrust output range of the hydraulic cylinder 21 can reach 5000-20000N, far exceeding the electric push rod which is usually ≤3000N, and can stably bear the combined weight of the brush disc 4 and the bristle assembly 42, which is about 80-120kg.

[0100] When operating on slopes or uneven surfaces, brush disc 4 needs to maintain a constant contact pressure of 3-5 N / cm. 2 The hydraulic system uses closed-loop feedback from pressure sensors to adjust the opening of hydraulic valves in real time, completing pressure fluctuation correction within ±0.5 seconds with an error of <5%.

[0101] When dynamically adjusting the extension distance of the side brush requires millisecond-level response, such as when avoiding obstacles, the servo motor speed can reach 3000rpm. The support rod 32 is driven by a planetary gear 412 box with a reduction ratio of 1:50, which can complete a 90° rotation within 0.1 seconds.

[0102] For different road widths of 2-6m, the extension angle needs to be adjusted in 0.5° step angles. If it is used with a harmonic reducer, a positioning accuracy of ±0.1° can be achieved.

[0103] The first motor 31 is vertically mounted below the hydraulic cylinder 21 and extends laterally through the support rod 32. The structure occupies 60% less space than the traditional parallelogram linkage mechanism, making it suitable for low-chassis sweeper designs.

[0104] Even on complex road conditions with a slope of ±15° and potholes ≤10cm in depth, it can still maintain constant pressure contact of the bristles, with cleaning efficiency fluctuation of <3%;

[0105] The single brush of a traditional sweeper cannot simultaneously meet the complex needs of coarse sweeping of large particles of garbage, fine sweeping of gap cleaning, and dust suppression.

[0106] Concentrated drive leads to uneven distribution of linear velocity at the bristle tips, with the outer edge having a higher velocity than the inner edge, resulting in a gradient difference in cleaning efficiency.

[0107] In complex terrains such as curb corners and uneven brick seams, a single-plane brush 4 is prone to local cleaning failure due to the tilt of the contact surface.

[0108] Therefore, the third drive assembly 41 is designed to include a main disc 43 fixedly installed with the support rod 32, a secondary disc 44 rotatably installed on the side of the main disc 43, a second motor 411 installed above the main disc 43, and a gear 412 disposed on the output shaft of the second motor 411. A ring tooth 413 is provided on the inner ring above the secondary disc 44. The brush disc 4 includes a secondary disc 44 rotatably installed on the side of the main disc 43. The ring tooth 413 cooperates with the gear 412 to drive the secondary disc 44 to rotate.

[0109] The upper and lower surfaces of the main disk 43 and the sub-disk 44 that are in contact with each other are fitted with metal lubricating balls 414, so that the sub-disk 44 does not cause frictional interference with the main disk 43 when it rotates.

[0110] The main disc 43 is fixedly installed at the end of the support rod 32, bearing the outer ring sweeping area 421 and the middle ring seam washing area 422. It is directly driven by the second motor 411 to rotate at 400 rpm, realizing the kinetic energy of the large particles of garbage at high speed, and generating a centrifugal airflow field to disturb the pollutants in the road surface gaps.

[0111] The auxiliary disc 44 has an independently rotating ring structure that integrates the inner ring dust collection area and the dust collection component 5. It achieves a reverse rotation speed of 600 rpm through gear 412-ring gear 413. The auxiliary disc 44 rotates counterclockwise, opposite to the main disc 43, generating a spiral airflow around the dust collection port, which improves the PM2.5 collection efficiency by 40%.

[0112] The dust discharge outlet 53 rotates at high speed with the sub-disc body 44, using centrifugal force to refine the water droplet size to 20μm. The traditional fixed outlet 53 is 80μm, thus the coverage area is increased by 3 times.

[0113] GCr15 bearing steel balls with a diameter of 8mm and a hardness of HRC62 are embedded in the mating surfaces of the main disc 43 and the auxiliary disc 44 to form a point contact sliding pair.

[0114] The 120 steel balls are arranged in multiple close groups, with a pressure bearing capacity of 30MPa per unit area, ensuring stable rotation even under a dynamic load of 100kg.

[0115] Traditional cleaning equipment relies on a single rotating brush to clean road surface gaps such as brick joints and asphalt pores. The brush bristles are not rigid enough to reach the bottom of the gaps and effectively clean to a depth of less than 2mm. It is difficult to remove stubborn deposits such as oil stains and chewing gum residue by friction alone. Furthermore, the pollutants in the gaps are not collected in time after being stirred up, resulting in secondary dust.

[0116] The brushing area 421 includes a plurality of first bristles 4211 installed in the outer ring area below the sub-disc body 44. The first bristles 4211 are cylindrical bristles with slightly curved ends facing outwards, and the outer layer of the first bristles 4211 is covered with a wear-resistant layer 4212.

[0117] The first bristle 4211 is made of nylon and glass fiber composite material, which is highly wear-resistant, flexible, anti-aging, and resistant to low / high temperatures, and can work in complex outdoor environments for a long time.

[0118] The sewing and washing area 422 includes several second bristles 4221 installed in the middle ring area below the sub-disc body 44, several air outlets 4222 located below the main disc body 43 near the second bristles 4221, and an air pump 4223 located above the main disc body 43. The air pump 4223 is electrically connected to the control module 6 and is connected to the air outlets 4222. The second bristles 4221 are tapered bristles with serrated edges.

[0119] The second bristle, 4221, is made of carbon fiber reinforced nylon. It is strong, elastic, and can withstand high-frequency vibration and airflow impact, making it suitable for cleaning stubborn stains and debris from crevices.

[0120] The internal suction area 423 includes a suction hole 4231 located in the middle of the lower part of the main disc body 43. The suction hole 4231 is connected to a suction air pump 4232 in the vehicle body 1. The suction air pump is electrically connected to the control module 6. The suction air pump controls the suction hole 4231 to suck dust into the storage box 12.

[0121] The second bristle 4221 has a tapered serrated bristle with a tapered structure. The diameter of the tapered structure is 5mm at the root and 1mm at the end, which enhances the end rigidity and increases the depth of the bristle penetration into the gap to 8mm. The serrated edge tooth height is 0.3mm and the spacing is 1mm. When rotating, it generates a high-frequency vibration frequency of 50Hz, which destroys the adhesion of pollutants.

[0122] It uses carbon fiber reinforced nylon CF / PA6 composite material, with a tensile strength of 980MPa, while traditional PP bristles have a tensile strength of 450MPa.

[0123] Furthermore, airflow assistance is provided, with the air pump 4223 at a pressure of 0.6MPa driving a high-speed airflow at a speed of 120m / s through the internal flow channel of the main plate 43, which forms a vortex effect through the air outlet 4222;

[0124] The air outlet 4222 is spirally distributed with a pitch of 15°, which causes the airflow to be sprayed tangentially along the direction of the gap, accelerating the loosened pollutants to 15m / s and carrying them away from the gap.

[0125] Through the synergistic effect of brush vibration and air kinetic energy, the removal rate of stubborn stains is increased by 2.5 times in laboratory simulated oil stain tests.

[0126] In the design of the internal suction zone 423, a large amount of dust is generated inside by the brushing of the first bristle 4211 and the second bristle 4221. Therefore, the internal suction zone 423 is designed to improve the dust capture efficiency.

[0127] By employing a tapered-throat-expanding structure with a contraction ratio of 3:1 through the suction port 4231, the airflow velocity is accelerated from 20m / s to 80m / s, and the throat negative pressure reaches -8kPa.

[0128] The suction pump has a power of 5.5kW, while the traditional equipment has a power of 7.5kW. By optimizing the inner wall roughness Ra of the pipe 54 through flow field simulation, the friction coefficient λ is reduced to 0.018 compared to 0.03 in the traditional equipment.

[0129] By moving the center line of the suction port forward to 15cm in front of the rotation center of the side brush, the residence time of debris particles in the airflow is extended to 0.8 seconds compared to the traditional 0.3 seconds.

[0130] In actual work, the first-stage seam washing zone 422 accelerates the seam contaminants to 15m / s through the vibration of the sawtooth brush bristles and the high-speed airflow.

[0131] In the second stage, the centrifugal airflow generated by the rotation of the main disk 43 at a speed of 30m / s pushes the particles to the internal suction zone 423.

[0132] In the third stage, the internal suction zone 423 uses the Tubular effect to accelerate the particles to 80 m / s. After being separated by a cyclone separator with a separation efficiency of 98%, the particles are collected into the collection box 12.

[0133] The dust suppression component 5 includes a main flow channel 51 disposed inside the main disc body 43, a secondary flow channel 52 disposed in the side ring of the secondary disc body 44, and a plurality of outlet holes 53 connecting the secondary flow channels 52 to the outside. The outlet holes 53 are inclined downward at 45°-50°. The main flow channel 51 is connected to the water storage area inside the vehicle body 1 for water supply. The secondary flow channels 52 are connected to the main flow channel 51. When the secondary disc body 44 is rotated, the main flow channel 51 guides the water flow into the secondary flow channel 52. Under the action of centrifugal force, the water in the secondary flow channel 52 is dispersed through the outlet holes 53.

[0134] By controlling the tilt angle of the outlet hole 53, the range of water mist emitted is controlled to a 40cm-50cm coverage area outside the outermost layer of the side brush assembly, effectively controlling the spread of smoke and dust.

[0135] Driven by centrifugal force, the dynamic water mist field is precisely followed by the side brush with a maximum working radius of 1.2m, ensuring that the dust suppression area and the trajectory of the garbage are completely overlapped.

[0136] By using the rotational kinetic energy of the brush disk 4 to replace the high-pressure pump, the water mist particle size can be refined to 20μm while the power consumption of the water pump is reduced by 40%.

[0137] The outlet hole 53 features a streamlined design with no sharp corners or dead angles. Combined with centrifugal force for reverse flushing, the risk of clogging is reduced by 75%.

[0138] In the two-stage water conveyance architecture of main channel 51 and secondary channel 52, the main channel 51 adopts a gradually narrowing channel with an inlet diameter of 20mm and an outlet diameter of 8mm, which accelerates the water flow velocity from 2m / s to 8m / s through the Bernoulli effect.

[0139] Its inner wall is electrochemically polished to Ra≤0.2μm, reducing the friction coefficient λ=0.015;

[0140] The annular cavity of the secondary flow channel 52 has a cross-sectional dimension of 10×5mm. Its volume changes dynamically with the rotation speed. Centrifugal force increases the water pressure from 0.2MPa to 0.6MPa, forming a Venturi tube effect, so that the water flow velocity reaches the critical value of 15m / s before the outlet hole 53, ensuring the atomization effect.

[0141] By setting the outlet hole 53 to an inclination angle of 45°-50° to form the optimal spray angle, and by arranging 12 sets of holes in a spiral distribution with a pitch of 15° through the outlet hole 53, the water mist coverage rate reaches 92% in the 40-50cm area.

[0142] A paradigm shift from passive spraying to active dynamic control. By deeply coupling centrifugal force fields and fluid dynamics, the efficiency bottleneck of traditional technologies is solved.

[0143] Example 2

[0144] Reference Figure 10-13 As shown, the difference between this embodiment and embodiment 1 is that the side brush assembly can be replaced with a cleaning assembly, and the cleaning assembly includes a motor mount 9 installed below the second drive assembly 3;

[0145] The upper half of the steel ball motor 91 is fixedly installed on the motor base 9, and the lower half can rotate relative to the upper half and is fixedly connected to the disc body 92.

[0146] Dust suppression nozzle 93 is assembled in the lower half of the steel ball motor 91;

[0147] The brush body 94 is installed below the disc body 92, and a cover plate 95 is provided above the disc body 92. The brush body 94 is limited and fixed above by the cover plate 95, and the motor seat 9 is fixedly connected to the cover plate 95.

[0148] An air blowing assembly includes an air blowing pipe 96 and an air blowing nozzle 97. The air blowing assembly is mounted to the bottom of the disc body 92 via a mating flange 961, and the air blowing nozzle 97 extends to the outside of the disc body 92.

[0149] The water inlet 98 is located on the upper part of the ball motor 91;

[0150] A sealing ring 99 is disposed between the ball motor 91 and the disc body 92;

[0151] The top of the air blowing pipe 96 passes through the upper half of the steel ball motor 91, and a closed water cavity 910 is formed between the inner cavity of the upper half of the steel ball motor 91 and the outer wall of the air blowing pipe 96. The water inlet 98 is connected to the water cavity 910.

[0152] When the lower half of the steel ball motor 91 rotates, it drives the disc 92, the dust-suppressing nozzle 93 and the air-blowing assembly to rotate synchronously. The water in the water chamber 910 is thrown out through the dust-suppressing nozzle 93 under the action of centrifugal force, thereby achieving rotational dust suppression.

[0153] The brush body 94 is composed of multiple flat brush blades. The steel ball motor 91 is electrically connected to the control module.

[0154] Addressing the pain points of traditional road sweepers, such as poor adaptability to complex road conditions, incomplete cleaning of road surface crevices, and difficulty in effectively suppressing dust, a systematic cleaning solution is constructed by combining brushing, air blowing, and dust suppression: the brushing area uses a steel ball motor 91 to drive the disc 92 to rotate at high speed, which can quickly complete the coarse cleaning of large-volume garbage on the road surface; the air blowing area uses airflow impact technology to accurately remove dust hidden in road surface crevices; and the dust suppression component can simultaneously suppress dust pollution during efficient cleaning, greatly improving the overall cleaning effect.

[0155] From a structural design perspective, this sweeping assembly incorporates brushing, air blowing, and dust suppression mechanisms. A steel ball motor 91 drives the disc 92 to rotate, creating a continuous workflow of coarse cleaning, crevices cleaning, and dust suppression. Specifically, the brushing zone performs coarse cleaning of large-volume debris on the road surface, the air blowing zone uses airflow to remove dust from road crevices, and the dust suppression assembly effectively suppresses dust throughout the entire sweeping process, achieving a dual breakthrough in both efficient sweeping and dust control.

[0156] When the steel ball motor 91 starts, the rotation of its lower part synchronously drives the rotation of the disc 92, dust suppression nozzle 93, and air blowing assembly, forming a linkage operation mechanism. To achieve efficient dust suppression, the device is designed with a unique water chamber 910 structure: the top of the air blowing pipe 96 of the air blowing assembly passes through the upper part of the steel ball motor 91, and the inner diameter of the upper part of the steel ball motor 91 is larger than the outer diameter of the air blowing pipe 96, forming a closed water chamber 910; the sealing ring 99 between the steel ball motor 91 and the upper surface of the disc 92 effectively prevents water leakage and ensures the sealing of the water chamber 910. During operation, water is supplied to the water chamber 910 through the water inlet 98 (connected to the clean water tank). Under the action of centrifugal force, the water is thrown out through the rotating dust suppression nozzle 93. The 360° rotating dust suppression nozzle 93, in conjunction with the dust suppression nozzles that are aligned with the sweeping angle, achieves a comprehensive dust suppression effect, suppressing dust generated by the sweeping.

[0157] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of this invention. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control module 6 of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above invention, the specific details of its power mechanism, power supply system and control module 6 can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0158] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0159] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A sweeper vehicle with a road sweeping mechanism, characterized in that, include: The vehicle body (1) has a set of storage slots (11) below it, and a cleaning component is disposed in the storage slots (11). The cleaning component includes: The side brush assembly for cleaning the ground includes a first drive assembly (2) that controls the side brush assembly to rise / fall from the storage slot (11) and a second drive assembly (3) that controls the side brush assembly to rotate from below the vehicle body (1) toward the inner / outer side. The side brush assembly includes a brush disk (4) connected to the second drive assembly (3) and a third drive assembly (41) that controls the brush disk (4) to rotate clockwise / counterclockwise. A bristle group (42) is provided below the brush disk (4). The bristle group (42) is arranged from the outside to the inside as a brush sweeping area (421), a seam washing area (422), and an inner suction area (423). The bristles of the brush sweeping area (421), the seam washing area (422), and the inner suction area (423) are gradually shortened from the outside to the inside. The brush disc (4) is driven to rotate by the third drive component (41), and the brush sweeping area (421) performs coarse cleaning of large garbage on the road surface, the seam washing area (422) performs airflow impact on the road surface seams, and the internal suction area (423) absorbs the dust carried by the airflow impact and collects it into the internal storage box (12) of the vehicle body (1). The brush disk (4) also includes a dust suppression component (5) on its side. The brush disk (4) is driven to rotate by the third drive component (41), and the dust suppression component (5) radiates small water droplets outward to suppress the dust carried up by the brushing area (421). The control module (6) is electrically connected to the first drive component (2), the second drive component (3), and the third drive component (41).

2. A sweeper with a sweeping mechanism according to claim 1, characterized in that: It also includes visual monitoring components (8) located on both sides of the vehicle body (1), which monitor the road surface morphology and feed back different road surface morphology parameters to the control module (6). The control module (6) cooperates with the first drive component (2) according to different road surface morphologies to control the descent height of the side brush component. The visual monitoring component (8) monitors the road width and obstacles and feeds the parameters back to the control module (6). The control module (6) works with the second drive component (3) to control the lateral extension distance of the side brush component based on the road width and obstacle parameters.

3. A sweeper with a sweeping mechanism according to claim 1, characterized in that: It also includes a vacuuming component disposed in the storage slot (11), wherein the vacuuming component in the stored state is located above the cleaning component in the stored state, and the vacuuming component includes: The suction nozzle assembly, the fourth drive assembly (71) that controls the suction nozzle assembly to extend downward from the storage slot (11), and the fifth drive assembly (72) that controls the suction nozzle assembly to rotate and extend outward from below the vehicle body (1), the fourth drive assembly (71) and the fifth drive assembly (72) being electrically connected to the control module (6).

4. A sweeper with a sweeping mechanism according to claim 1, characterized in that: The first drive assembly (2) includes a hydraulic cylinder (21) connected to the second drive assembly (3) and a hydraulic pump (22) with a hydraulic valve installed inside the vehicle body (1). The second drive assembly (3) and the side brush are raised and lowered by the hydraulic cylinder (21) installed on the hydraulic pump (22).

5. A sweeper with a sweeping mechanism according to claim 4, characterized in that: The second drive assembly (3) includes a first motor (31) mounted below the hydraulic cylinder (21) and a support rod (32) mounted on the drive rod of the first motor (31). The first motor (31) is electrically connected to the control module (6). The control module (6) cooperates with the first motor (31) to control the support rod (32) to rotate and extend from below the vehicle body (1) toward the inner / outer side.

6. A sweeper with a sweeping mechanism according to claim 5, characterized in that: The third drive assembly (41) includes a main disk body (43) fixedly installed with the support rod (32), a second motor (411) installed above the main disk body (43), and a gear (412) set on the output shaft of the second motor (411). The brush disk (4) includes a secondary disk body (44) rotatably installed on the side of the main disk body (43). The secondary disk body (44) has a ring tooth (413) on its inner ring. The ring tooth (413) cooperates with the gear (412) to drive the secondary disk body (44) to rotate.

7. A sweeper with a sweeping mechanism according to claim 6, characterized in that: The brushing area (421) includes a number of first bristles (4211) installed in the outer ring area below the sub-disc body (44). The first bristles (4211) are cylindrical bristles with slightly curved ends facing outwards, and the outer layer of the first bristles (4211) is covered with a wear-resistant layer (4212).

8. A sweeper with a sweeping mechanism according to claim 6, characterized in that: The sewing and washing area (422) includes several second bristles (4221) installed in the middle ring area below the sub-disc body (44), several air outlets (4222) located below the main disc body (43) near the second bristles (4221), and an air pump (4223) located above the main disc body (43). The air pump (4223) is electrically connected to the control module (6) and the air pump (4223) is connected to the air outlets (4222). The second bristles (4221) are tapered bristles with serrated edges.

9. A sweeper with a sweeping mechanism according to claim 6, characterized in that: The internal suction area (423) includes a suction hole (4231) located in the middle of the lower part of the main disc (43). The suction hole (4231) is connected to a suction air pump (4232) in the vehicle body (1). The suction air pump (4232) is electrically connected to the control module (6). The suction air pump (4232) controls the suction hole (4231) to suck dust into the storage box (12). The dust suppression component (5) includes a main flow channel (51) disposed inside the main disc body (43), a secondary flow channel (52) disposed in the side ring of the secondary disc body (44), and several outlet holes (53) connecting the secondary flow channel (52) to the outside. The outlet holes (53) are inclined downward at 45°-50°. The main flow channel (51) is connected to the water storage area inside the vehicle body (1) through a pipe (54) for water supply. The secondary flow channel (52) is connected to the main flow channel (51). When the secondary disc body (44) is rotated, the main flow channel (51) guides the water flow into the secondary flow channel (52). Under the action of centrifugal force, the water in the secondary flow channel (52) is dispersed through the outlet holes (53).

10. A sweeper with a sweeping mechanism according to claim 1, characterized in that: The side brush assembly can be replaced by a cleaning assembly, the cleaning assembly including a motor mount (9) mounted below the second drive assembly. The upper half of the steel ball motor (91) is fixedly installed on the motor base (9), and the lower half can rotate relative to the upper half and is fixedly connected to the disc body (92); The dust suppression nozzle (93) is mounted on the lower half of the ball motor (91); The brush body (94) is installed below the disc body (92), and a cover plate (95) is provided above the disc body (92). The brush body (94) is limited and fixed above by the cover plate (95), and the motor seat (9) is fixedly connected to the cover plate (95). An air blowing assembly, including an air blowing pipe (96) and an air blowing nozzle (97), is mounted to the bottom of the disc body (92) via a mating flange (961), and the air blowing nozzle (97) extends to the outside of the disc body (92); The water inlet (98) is located on the upper part of the ball motor (91); A sealing ring (99) is disposed between the steel ball motor (91) and the disc body (92); The top of the air blowing pipe (96) passes through the upper half of the steel ball motor (91), and a closed water cavity (910) is formed between the inner cavity of the upper half of the steel ball motor (91) and the outer wall of the air blowing pipe (96). The water inlet (98) is connected to the water cavity (910). When the lower half of the steel ball motor (91) rotates, it drives the disc (92), the dust-suppressing nozzle (93) and the air-blowing assembly to rotate synchronously. The water in the water chamber (910) is thrown out through the dust-suppressing nozzle (93) under the action of centrifugal force, thereby achieving rotational dust suppression.

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