Sweeping vehicle with road sweeping mechanism

Abstract

The invention discloses a motor sweeper with a sweeping mechanism, which comprises a sweeper body, a group of storage grooves arranged below the sweeper body, and a sweeping assembly arranged in the storage grooves, and the sweeping assembly comprises a side brush assembly used for sweeping the ground, the first driving assembly is used for controlling the side brush assembly to ascend / descend from the containing groove, and the second driving assembly is used for controlling the side brush assembly to rotate towards the inner side edge / the outer side edge from the lower portion of the vehicle body. Through cooperative control of the first driving assembly and the second driving assembly, the brush disc can adapt to different road conditions to complete composite motion with the vertical lifting adjustment range of + / -10 cm and the horizontal swing angle of + / -45 degrees. The problem that due to the fact that traditional bristles are arranged in a flush mode, the dust removal rate of areas such as brick joints and asphalt pavement holes is poor is effectively solved, gap dust removal is improved, and internal dust absorption and external dust synchronous inhibition are carried out through cooperation of a dust falling assembly and an internal absorption area for serious secondary dust raising.

Description

Technical Field

[0001] The invention relates to a road sweeper with a road sweeping mechanism, belonging to the technical field of road sweepers. Background Art

[0002] Sweepers are widely used for cleaning operations on urban roads, industrial parks, airport runways, and large parking lots. They are primarily used to remove pollutants such as fallen leaves, gravel, dust, and oil residue from the road surface. As the demand for urban environmental governance increases, the requirements for sweeping equipment have evolved from simply clearing surface debris to a multifunctional, integrated approach that adapts to complex road conditions, deep-cleansing crevices, and suppresses dust. For example, urban road sweeping requires the rapid collection of large particles, the removal of stubborn stains between curbs, and the suppression of dust during the operation.

[0003] Existing road sweepers generally utilize a single rotating side brush with a central suction port. The bristles are uniform in length and have a single function. This design only achieves a "one-size-fits-all" cleaning of surface debris. The traditional flat arrangement of bristles results in poor dust removal in areas like brick joints and holes in asphalt pavement. Furthermore, secondary dust generation is severe, and the high-speed rotation of the side brush raises a large amount of dust during cleaning. While existing equipment is equipped with a spray system, the water mist coverage is not synchronized with the brush disc's motion, resulting in low dust suppression efficiency. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a road sweeper with a road sweeping mechanism to solve the problems of the prior art.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A road sweeper with a road sweeping mechanism comprises: a vehicle body, a group of receiving grooves provided below the vehicle body, and a cleaning assembly provided in the receiving grooves, the cleaning assembly comprising: a side brush assembly for cleaning the floor, a first drive assembly for controlling the raising / lowering of the side brush assembly from the receiving slot, and a second drive assembly for controlling the rotation of the side brush assembly from the bottom of the vehicle body toward the inner / outer side; The side brush assembly includes a brush disc connected to the second drive assembly, and a third drive assembly that controls the clockwise / counterclockwise rotation of the brush disc. A bristle group is arranged below the brush disc. The bristle group is sequentially arranged from the outside to the inside with a brushing area, a seam washing area, and an inner suction area. The bristles of the brushing area, the seam washing area, and the inner suction area are gradually shortened from the outside to the inside. The brush disc is driven to rotate by the third drive assembly, and cooperates with the brush sweeping area to roughly clean the large garbage on the surface of the road surface, cooperates with the seam washing area to impact the road surface with airflow, and cooperates with the internal suction area to absorb the dust carried by the airflow impact into the storage box inside the vehicle body; The side of the brush disc also includes a dust suppression component, which drives the brush disc to rotate through the third drive component, and cooperates with the dust suppression component to radiate small water droplets outward to suppress the dust brought up by the brush sweeping area; A control module is electrically connected to the first drive assembly, the second drive assembly, and the third drive assembly.

[0006] As a further improvement, the vehicle further includes visual monitoring components located on both sides of the vehicle body, which monitor the road surface morphology and feed back different road surface morphology parameters to the control module. The control module cooperates with the first drive component according to the different road surface morphologies to control the lowering height of the side brush assembly; The road width and obstacles are monitored by the visual monitoring component, and the parameters are fed back to the control module. The control module cooperates with the second drive component according to the road width and obstacle parameters to control the lateral extension distance of the side brush assembly.

[0007] As a further improvement, the invention further comprises a dust collection assembly disposed in the storage groove, wherein the dust collection assembly in the storage state is located above the cleaning assembly in the storage state, and the dust collection assembly comprises: A suction nozzle assembly, a fourth drive assembly that controls the suction nozzle assembly to extend downward from the storage groove, and a fifth drive assembly that controls the suction nozzle assembly to rotate and extend from the bottom of the vehicle body toward the outer edge. The fourth drive assembly and the fifth drive assembly are electrically connected to the control module.

[0008] 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 located inside the vehicle body. The hydraulic cylinder mounted on the hydraulic pump drives the second drive assembly and the side brush to rise and fall. The hydraulic valve and hydraulic pump are electrically connected to a control module.

[0009] As a further improvement, the second drive assembly includes a first motor installed under the hydraulic cylinder and a support rod installed on the motor drive rod. The first motor is electrically connected to the control module, and the control module cooperates with the first motor to control the support rod to rotate and extend from the bottom of the vehicle body toward the inner / outer side.

[0010] As a further improvement, the third drive assembly includes a main disk body fixedly mounted on the support rod, a sub-disk body rotatably mounted on the side of the main disk body, a second motor mounted above the main disk body, and a gear arranged on the output shaft of the second motor. The brush plate includes a sub-disk body rotatably mounted on the side of the main disk body, and the inner ring above the sub-disk body is provided with ring teeth, which drive the sub-disk body to rotate through cooperation with the gear.

[0011] As a further improvement, the brushing area includes a plurality of first bristles installed in the outer ring area below the auxiliary disc body. The first bristles are cylindrical brush wires with the ends slightly bent toward the outside, and the outer layer of the first bristles is covered with a wear-resistant layer.

[0012] As a further improvement, the seam washing area includes a number of second bristles installed in the middle ring area below the auxiliary disk, a number of air outlets arranged below the main disk near the second bristles, and an air pump arranged above the main disk. The air pump is electrically connected to the control module, and the air pump is connected to the air outlet. The second bristles are conical brush wires with serrated edges.

[0013] As a further improvement, the internal suction area includes a suction hole arranged in the middle part below the main disk body, the suction hole is connected to the suction air pump in the vehicle body, the suction air pump is electrically connected to the control module, and the suction hole is controlled by the suction air pump to absorb dust into the storage box.

[0014] As a further improvement, the dust reduction component includes a main flow channel arranged inside the main disk body, a secondary flow channel arranged in the side ring of the secondary disk body, and several outlet holes connecting the secondary flow channel with 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 channel is connected to the main flow channel. When the secondary disk body is rotated, the main flow channel guides the water flow into the secondary flow channel, and the water in the secondary flow channel is dispersed through the outlet holes under the action of centrifugal force.

[0015] As a further improvement, the side brush assembly may be replaced with a cleaning assembly, wherein the cleaning assembly includes a motor mount mounted below the second drive assembly; A steel ball motor, the upper half of which is fixedly mounted on the motor base, and the lower half of which is rotatable relative to the upper half and fixedly connected to the disc body; A dust suppression nozzle is mounted on the lower part of the steel ball motor; The brush body is installed below the disc body, a cover plate is provided above the disc body, the brush body is fixed by the cover plate, and the motor seat is fixedly connected to the cover plate; An air blowing assembly, comprising an air blowing pipe and an air blowing nozzle, wherein the air blowing assembly is mounted on the bottom of the tray body through a docking flange, and the air blowing nozzle extends to the outside of the tray body; A water inlet is provided on the upper part of the steel ball motor; A sealing ring is provided between the steel ball motor and the disc body; 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, and the water inlet is connected to the water cavity; When the lower half of the steel ball motor rotates, it drives the disc, the dust suppression nozzle and the air blowing assembly to rotate synchronously. The water in the water cavity is thrown out through the dust suppression nozzle under the action of centrifugal force, thereby realizing rotary dust reduction.

[0016] The beneficial effects of the present invention are: Through the coordinated control of the first and second drive assemblies, the brush disc can adapt to varying road conditions, achieving a vertical lift range of ±10cm and a horizontal swing angle of ±45°. When the device reaches the intersection of the curb and the road surface, the control module and visual detection assembly work together to monitor changes in ground height in real time, driving the side brush to oscillate slightly at a 0.5Hz frequency to compensate, ensuring the bristle tips maintain an optimal contact gap of 3-5mm with the ground.

[0017] The three groups of bristles on the brush disc, arranged in a gradient pattern according to functional zones, create a physical-pneumatic synergy. The longest nylon bristles on the outer ring form the sweeping zone. Driven by the third drive assembly, the high-speed rotation speed reaches 400 rpm, generating a centrifugal force field that can effectively push and shovel solid waste with a diameter of ≤5 cm. The crack-washing area, composed of carbon fiber bristles in the middle, forms an impact angle of 30° with the direction of vehicle travel when rotating. Combined with the annular air channel opened at the bottom of the brush disc, the Bernoulli effect is used to generate local negative pressure, causing compressed air to be ejected into the cracks in the road surface at a speed of 80m / s. The innermost suction zone and the central suction port create a Venturi effect, accelerating dust particles disturbed by the seam cleaning area into the collection bin. This layered operation mode enables a single cleaning cycle to remove 1.8 times more pollutants than conventional equipment, with a particularly significant improvement of 92% in the removal of asphalt pavement gap pollution.

[0018] To control dust, a dust suppression assembly is included. Eighteen sets of 50μm-diameter atomization outlets, evenly distributed along the brush disc's radial direction, ensure a continuous water curtain barrier as the brush disc rotates. When the third drive assembly rotates the brush disc, centrifugal force evenly transports water from the reservoir through pipes to the outlets, creating a fan-shaped mist curtain with a 120° coverage angle along the tangent of rotation.

[0019] It effectively solves the problem of poor dust removal rate in areas such as brick joints and holes in asphalt pavement caused by the flat arrangement of traditional bristles, improves the cleaning of dust in gaps, and targets severe secondary dust by absorbing internal dust and simultaneously suppressing external dust through the cooperation of dust reduction components and internal suction areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The present invention is a side view of a sweeping component of a road sweeping vehicle with a road sweeping mechanism in an unfolded state.

[0022] Figure 2 The present invention is a rear view of a sweeping vehicle with a road sweeping mechanism in an unfolded state of a sweeping component.

[0023] Figure 3 The present invention is a bottom view of a sweeping component of a road sweeping vehicle with a road sweeping mechanism in an unfolded state.

[0024] Figure 4 The present invention is a side view of a road sweeper with a road sweeping mechanism in a stored state.

[0025] Figure 5 The present invention is a bottom view of a road sweeper with a road sweeping mechanism in a stored state.

[0026] Figure 6 It is a schematic side view of the side brush assembly of the present invention in an expanded state.

[0027] Figure 7 yes Figure 6 Schematic diagram of the partially enlarged cross-section of the middle brush plate.

[0028] Figure 8 It is a bottom view of a bristle assembly of the present invention.

[0029] Figure 9 It is a schematic diagram of module connection of a road sweeper with a road sweeping mechanism according to the present invention.

[0030] Figure 10 It is a schematic side view of the side brush assembly of the present invention in an expanded state.

[0031] Figure 11 yes Figure 10 Top view of the middle and side brush assemblies.

[0032] Figure 12 yes Figure 11 Mid-section view.

[0033] Figure 13 It is a schematic diagram of module connection of a road sweeper with a road sweeping mechanism according to the present invention.

[0034] 1. Vehicle body; 11. Storage slot; 12. Storage box; 2. First drive assembly; 3. Second drive assembly; 4. Brush plate; 41. Third drive assembly; 42. Brush group; 421. Brushing area; 422. Seam washing 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 plate; 44. Sub-plate; 411. Second motor; 412. Gear; 413. Ring gear; 414. Lubricating ball; 4211. First brush; 4212. Wear-resistant layer ;4221, second bristles;4222, air outlet;4223, air pump;4231, suction hole;4232, suction air pump;51, main channel;52, secondary channel;53, outlet hole;54, pipeline;8, visual monitoring component;71, fourth drive component;72, fifth drive component;9, motor seat;91, steel ball motor;92, disk;93, dust suppression nozzle;94, brush body;95, cover;96, air blowing pipe;961, docking flange;97, air blowing nozzle;98, water inlet;99, sealing ring;910, water cavity. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work 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 drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] Example 1 Reference Figure 1-9 As shown, a road sweeper with a road sweeping mechanism includes: The vehicle body 1 has a set of receiving grooves 11 provided below the vehicle body 1, and a cleaning assembly provided in the receiving grooves 11. The cleaning assembly includes: a side brush assembly for cleaning the floor, a first drive assembly 2 for controlling the raising / lowering of the side brush assembly from the receiving slot 11, and a second drive assembly 3 for controlling the rotation of the side brush assembly from the bottom of the vehicle body 1 toward the inner / outer side; The side brush assembly includes a brush disc 4 connected to the second drive assembly 3, and a third drive assembly 41 for controlling the clockwise / counterclockwise rotation of the brush disc 4. A bristle group 42 is provided below the brush disc 4. The bristle group 42 is sequentially arranged from the outside to the inside with 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 driving assembly 41, and the brush sweeping section 421 is used to roughly clean the large garbage on the road surface, and the seam washing section 422 is used to impact the road surface with airflow, and the internal suction section 423 is used to absorb the dust carried by the airflow into the storage box 12 inside the vehicle body 1. The side of the brush plate 4 also includes a dust suppression component 5, which drives the brush plate 4 to rotate through the third driving component 41, and cooperates with the dust suppression component 5 to radiate small water droplets outward to suppress the dust brought up by the brushing area 421; The control module 6 is electrically connected to the first drive assembly 2 , the second drive assembly 3 , and the third drive assembly 41 .

[0038] In the working state: the control module 6 controls the first driving assembly 2 to drive the side brush assembly and the second driving assembly 3 to descend from the storage groove 11 to the working height; The control module 6 controls the second driving assembly 3 to drive the side brush assembly to rotate outward from the bottom of the vehicle body 1 to a working angle; Cooperating with the third driving component 41, on the one hand, the bristle group 42 is driven to rotate, and the three-stage design is used to deeply clean the ground layer by layer, and cooperates with the dust suppression component 5 to suppress the dust raised from the outermost layer; In the non-working state: the third driving assembly 41 is controlled to stop by the control assembly, and cooperates with the second driving assembly 3 to rotate the side brush assembly from the outside of the vehicle body 1 toward the bottom of the vehicle body 1 to the initial angle; The side brush assembly is lifted and stored by cooperating with the control assembly and the first drive assembly 2 .

[0039] Through the coordinated control of the first and second drive assemblies 2 and 3, the brush disc 4 can adapt to varying road conditions, achieving a vertical lift range of ±10cm and a horizontal swing angle of ±45°. When the device reaches the intersection of the curb and the road surface, the control module 6 and the visual detection component work together to monitor the ground height changes in real time, driving the side brush to oscillate slightly at a frequency of 0.5Hz to compensate, ensuring that the tip of the bristles always maintains an optimal contact gap of 3-5mm with the ground.

[0040] The three groups of bristles on the surface of the brush disc 4, arranged in a gradient pattern according to functional zones, create a physical-pneumatic synergy. The longest nylon bristles on the outer ring form the sweeping area 421. Driven by the third drive assembly 41, the high-speed rotation speed reaches 400 rpm, generating a centrifugal force field, which can effectively push and shovel solid waste with a diameter of ≤5 cm. The crack-washing area 422 formed by the middle carbon fiber bristle group 42 forms an impact angle of 30° with the direction of travel of the vehicle body 1 during rotation. In conjunction with the annular air channel opened at the bottom of the brush plate 4, the Bernoulli effect is used to generate local negative pressure, causing compressed air to be ejected into the cracks in the road surface at a speed of 80m / s. 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 enables the removal of pollutants in a single cleaning cycle to reach 1.8 times the amount of conventional equipment, with a particularly significant improvement of 92% in the removal of asphalt pavement gap pollution.

[0041] A dust suppression component 5 is set up for dust control. Through 18 groups of atomization outlet holes 53 evenly distributed along the radial direction of the brush disc 4, with an aperture of 50μm, a continuous water curtain barrier can be formed when the brush disc 4 rotates. When the third drive component 41 drives the brush disc 4 to rotate, the centrifugal force causes the water in the liquid storage chamber to be evenly transported to the outlet hole 53 through the pipe 54, generating a fan-shaped mist curtain with a coverage angle of 120° in the direction of the rotation tangent. Compared with traditional fixed spraying, the water mist coverage rate is increased by 65% ​​through dynamic spraying, and it can accurately match the movement trajectory of the side brush, so that the PM2.5 concentration is stably controlled at 45μg / m 3 Below, 40% lower than the national standard limit.

[0042] The PLC control module 6 achieves millisecond-level coordinated control of the three drive components. When the equipment detects a change in slope, the first drive component 2 initiates the height compensation process 0.3 seconds in advance. The second drive component 3 simultaneously adjusts the inclination of the brush plate 4. The third drive component 41 dynamically adjusts the speed fluctuation range by ±50 rpm based on the vibration data fed back by the gyroscope.

[0043] The control mechanism improves cleaning consistency to over 95% even in complex terrain. Regarding energy management, the system uses a machine learning algorithm to establish a cleaning demand-energy consumption model. It automatically switches between "Economy" and "Powerful" modes based on the road contamination index, reducing overall energy consumption by 28% while maintaining cleanliness.

[0044] The vehicle body 1 further includes a visual monitoring assembly 8 located on both sides thereof, which monitors the road surface morphology and feeds back different road surface morphology parameters to the control module 6. The control module 6 cooperates with the first driving assembly 2 according to different road surface morphologies to control the lowering height of the side brush assembly. The road width and obstacles are monitored by the visual monitoring component 8, and the parameters are fed back to the control module 6. The control module 6 cooperates with the second drive component 3 according to the road width and obstacle parameters to control the lateral extension distance of the side brush assembly.

[0045] Since traditional equipment relies on manually preset side brush height and extension distance, it is difficult to cope with dynamically changing road conditions such as sudden changes in curb height, potholes, temporary obstacles, etc.

[0046] 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 ineffective energy consumption by about 18% of the total energy consumption, but also may cause the outer edge of the side brush to extend beyond the vehicle body 1 and scrape the wall.

[0047] By introducing the visual monitoring component 8, a closed-loop control module 6 of "environmental perception-dynamic decision-making-precise execution" is constructed. The side brush's lowering height is dynamically adjusted within a range of 0-10cm according to the road surface, ensuring that the end of the brush always maintains an optimal contact pressure of 3-5N / cm with the ground. 2 , to avoid garbage leakage or brush wire breakage caused by pressure fluctuations; By real-time monitoring of obstacles on the road with a diameter of ≥5cm and the sweepable width, the side brush is dynamically retracted to adjust its extension range by ±30cm, ensuring a cleaning coverage rate of ≥95% while reducing the risk of collision to 0.3 times per 100km. The side brush working radius is automatically adjusted according to actual working needs, and the extension distance is reduced by 40% in narrow areas <3m.

[0048] The visual monitoring component 8 includes a wide-angle binocular vision sensor and a line laser profile scanner integrated on both sides of the roof: Using a 120° FOV lens, it can identify environmental elements such as lane lines, green belt boundaries, and temporary roadblocks in real time; Obstacle distance is calculated using a stereo matching algorithm, with a ranging range of 0.5-15m and an error of <1%.

[0049] The line laser profile scanner emits 64 laser beams to scan the road surface at a frequency of 200Hz, generating three-dimensional point cloud data for precise measurement of curb height accuracy of ±1mm, pothole depth resolution of 0.5cm, and slope changes.

[0050] In order to further suppress the diffusion of dust, a dust collection component is further provided in the storage groove 11, wherein the dust collection component in the storage state is located above the cleaning component in the storage state, and the dust collection component includes: The suction nozzle assembly, the fourth drive assembly 71 that controls the suction nozzle assembly to extend downward from the storage groove 11, and the fifth drive assembly 72 that controls the suction nozzle assembly to rotate and extend from the bottom of the vehicle body 1 toward the outer edge, the fourth drive assembly 71 and the fifth drive assembly 72 are electrically connected to the control module 6.

[0051] In the working state: the control module 6 controls the fourth driving assembly 71 to drive the dust collecting assembly and the fifth driving assembly 72 to descend from the storage tank 11 to the working height; The control module 6 controls the fifth driving assembly 72 to drive the dust collecting assembly to rotate outward from the bottom of the vehicle body 1 to a working angle, and is located behind the side brush assembly to suck the dust swept by the side brush assembly; In the non-working state: the control component controls the dust collection component to stop suction, and cooperates with the fifth drive component 72 to rotate the dust collection component from the outside of the vehicle body 1 toward the bottom of the vehicle body 1 to the initial angle; The control assembly cooperates with the fourth drive assembly 71 to lift the dust collection assembly upward and store it.

[0052] It should be emphasized that the side brush assembly should be stored only after the nozzle assembly is stored.

[0053] The fourth drive assembly 71 is the cooperation of the hydraulic pump 22 and the hydraulic cylinder 21, and the fifth drive assembly 72 is the motor. Since the design of the lifting and rotating structure is consistent with the design logic of the above-mentioned side brush assembly, it is not repeated here.

[0054] In order to control the side brush assembly to rise / fall from the storage slot 11, the first drive assembly 2 is refined as follows: 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 within 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 rise and fall. The hydraulic valve and hydraulic pump 22 are electrically connected to the control module 6.

[0055] In order to control the side brush assembly to rotate from the bottom of the vehicle body 1 toward the inner / outer side, the second drive assembly 3 is refined as follows: The second drive assembly 3 includes a first motor 31 installed below the hydraulic cylinder 21 and a support rod 32 vertically installed on the rotating shaft 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 the bottom of the vehicle body 1 toward the inner / outer side.

[0056] Because the side brush assembly needs to be raised and lowered frequently to adapt to different terrains, such as curb height differences and potholes, the hydraulic cylinder 21 has a thrust output range of 5,000-20,000N, far exceeding the 3,000N typically achieved by electric linear actuators. This allows it to stably support the combined weight of the brush plate 4 and bristle assembly 42, which is approximately 80-120kg. When working on slopes or uneven roads, the brush plate 4 needs to maintain a constant contact pressure of 3-5N / cm 2 The hydraulic system can adjust the hydraulic valve opening in real time through closed-loop feedback from the pressure sensor, and complete the pressure fluctuation correction error <5% within ±0.5 seconds; When dynamically adjusting the side brush extension distance, which requires millisecond-level response, such as avoiding obstacles, the servo motor can rotate at up to 3000 rpm, driving the support rod 32 through a planetary gearbox 412 with a reduction ratio of 1:50, achieving a 90° rotation within 0.1 seconds; For different road widths of 2-6m, the extension angle needs to be adjusted in 0.5° steps. If used with a harmonic reducer, a positioning accuracy of ±0.1° can be achieved. The first motor 31 is vertically installed 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 and is suitable for the design of low-floor sweepers.

[0057] Even in complex road conditions with slopes of ±15° and pothole depths ≤10cm, the brush can still maintain constant pressure contact, with cleaning efficiency fluctuations of <3%; The single brush disc 4 of a traditional sweeper cannot simultaneously meet the complex requirements of sweeping large particles of garbage, sweeping gaps and cleaning, and dust reduction and dust suppression; Centralized driving results in uneven linear velocity distribution at the bristle tip, with the outer edge speed being faster than the inner edge, resulting in a gradient difference in cleaning efficiency. In complex terrains such as curb corners and concave-convex brick joints, a single flat brush disc 4 may easily fail to perform local cleaning due to the tilted contact surface.

[0058] Therefore, the third drive assembly 41 is designed to include a main disk body 43 fixedly mounted on the support rod 32, a sub-disk body 44 rotatably mounted on the side of the main disk body 43, a second motor 411 mounted above the main disk body 43, and a gear 412 arranged on the output shaft of the second motor 411. A ring gear 413 is provided on the inner ring above the sub-disk body 44. The brush plate 4 includes a sub-disk body 44 rotatably mounted on the side of the main disk body 43, and the ring gear 413 cooperates with the gear 412 to drive the sub-disk body 44 to rotate.

[0059] The upper and lower surfaces of the main plate 43 and the auxiliary plate 44 are both embedded with metal lubricating balls 414 to prevent the auxiliary plate 44 from generating friction interference with the main plate 43 when rotating.

[0060] The main disc 43 is fixedly mounted at the end of the support rod 32, carrying the outer circle brushing area 421 and the middle circle seam washing area 422. It is directly driven by the second motor 411 at a speed of 400 rpm, realizing high-speed shoveling of large particles of garbage kinetic energy, generating a centrifugal airflow field to disturb the pollutants in the gaps of the road surface.

[0061] The auxiliary disc 44 is an independently rotating annular structure that integrates the inner ring dust collection area and the dust suppression component 5. The gear 412 and the ring gear 413 drive the reverse rotation speed of 600 rpm. The auxiliary disc 44 rotates counterclockwise in the opposite direction of the main disc 43, generating a spiral airflow around the dust collection port, which improves PM2.5 collection efficiency by 40%. The dust removal outlet 53 rotates at high speed with the auxiliary disc 44, using centrifugal force to refine the water droplet particle size to 20μm. The traditional fixed outlet 53 is 80μm, and the coverage area is expanded by 3 times.

[0062] GCr15 bearing steel balls with a diameter of 8 mm and a hardness of HRC62 are embedded in the contact surfaces of the main disc body 43 and the auxiliary disc body 44 to form a point contact sliding pair.

[0063] Among them, 120 steel balls are densely arranged in multiple groups, with a pressure bearing capacity of 30MPa per unit area, ensuring smooth rotation under a dynamic load of 100kg.

[0064] Because traditional cleaning equipment relies on a single rotating brush to clean road gaps such as brick gaps and asphalt pores, the bristles are not rigid enough to penetrate deep into the bottom of the gaps to effectively clean to a depth of <2mm. It is difficult to remove stubborn attachments such as oil stains and chewing gum residues by friction alone, and the pollutants in the gaps are not collected in time after being blown up, resulting in secondary dust.

[0065] The brushing area 421 includes a plurality of first bristles 4211 installed in the outer ring area below the auxiliary disc 44. The first bristles 4211 are cylindrical brush wires with the ends slightly bent outward, and the outer layer of the first bristles 4211 is covered with a wear-resistant layer 4212.

[0066] The first bristles 4211 are made of a composite material of nylon and glass fiber, which has strong wear resistance, high flexibility, anti-aging, and low / high temperature resistance, and can work in complex outdoor environments for a long time.

[0067] The seam washing area 422 includes a plurality of second bristles 4221 installed in the middle ring area below the auxiliary disk 44, a plurality of air outlet holes 4222 arranged below the main disk 43 near the second bristles 4221, and an air pump 4223 arranged above the main disk 43. The air pump 4223 is electrically connected to the control module 6, and the air pump 4223 is connected to the air outlet holes 4222. The second bristles 4221 are conical brush wires with serrated edges.

[0068] The second bristles 4221 are made of carbon fiber reinforced nylon. They are strong and elastic, can withstand high-frequency vibrations and airflow impacts, and are suitable for cleaning stubborn stains and crevice debris.

[0069] The internal suction area 423 includes a suction hole 4231 arranged in the middle of the lower part of the main disk body 43. The suction hole 4231 is connected to the suction air pump 4232 in the vehicle body 1. The suction air pump is electrically connected to the control module 6. The suction hole 4231 is controlled by the suction air pump to absorb dust into the storage box 12.

[0070] The second bristles 4221 are tapered serrated bristles with a diameter of 5mm at the base and 1mm at the end, which enhances the end stiffness and increases the depth of the bristles penetrating into the gap to 8mm. The serrated edge has a tooth height of 0.3mm and a spacing of 1mm. When rotating, it generates a high-frequency vibration frequency of 50Hz, which destroys the adhesion of pollutants. Made of carbon fiber reinforced nylon CF / PA6 composite material, the tensile strength reaches 980MPa, while the traditional PP bristles are 450MPa.

[0071] Airflow assistance is also provided, and the air pump 4223 with a pressure of 0.6 MPa drives a high-speed airflow at a speed of 120 m / s through the internal flow channel of the main plate 43, forming a vortex effect through the air outlet 4222; The air outlet holes 4222 are distributed in a spiral shape with a pitch of 15°, so that the airflow is ejected tangentially in the direction of the gap, accelerating the loose pollutants to 15m / s and carrying them away from the gap; Through the synergistic effect of bristle vibration and airflow kinetic energy, the removal rate of stubborn stains is increased by 2.5 times in laboratory simulated oil stain test; In the design of the internal suction zone 423 , a large amount of dust is generated due to the brushing of the interior by the first bristles 4211 and the second bristles 4221 , and thus the internal suction zone 423 is designed to improve the dust capture efficiency.

[0072] The suction hole 4231 adopts a contraction-throat-gradual expansion structure with a contraction ratio of 3:1, which accelerates the air flow speed from 20m / s to 80m / s, and the negative pressure at the throat reaches -8kPa; The suction pump power is 5.5kW, while the traditional equipment is 7.5kW. Through flow field simulation optimization, the inner wall roughness of the pipeline 54 is Ra≤0.8μm, making the resistance coefficient along the way λ=0.018, which is 0.03 compared with the traditional equipment. Move the center line of the suction port forward to 15 cm in front of the side brush's rotation center, so that the garbage particles stay in the airflow for a longer time to 0.8 seconds instead of the traditional 0.3 seconds.

[0073] In actual operation, the first stage of the seam cleaning area 422 accelerates the seam contaminants to 15m / s through the vibration of the sawtooth bristles and high-speed airflow; In the second stage, the centrifugal airflow generated by the rotation of the main disc 43 at a speed of 30 m / s pushes the particles into the internal suction zone 423; In the third stage, the Venturi tube effect in the internal suction zone 423 accelerates the particles to 80 m / s and the particles are collected in the collection box 12 with a separation efficiency of 98% through the cyclone separator.

[0074] The dust reduction component 5 includes a main channel 51 arranged inside the main disk body 43, a secondary channel 52 arranged in the side ring of the secondary disk body 44, and a plurality of outlet holes 53 connecting the secondary channel 52 with the outside. The outlet holes 53 are inclined downward at 45°-50°. The main channel 51 is connected to the water storage area inside the vehicle body 1 for water supply. The secondary channel 52 is connected to the main channel 51. When the secondary disk body 44 is rotated, the main channel 51 guides the water flow into the secondary channel 52, and the water in the secondary channel 52 is dispersed through the outlet holes 53 under the action of centrifugal force.

[0075] Among them, by controlling the inclination angle of the outlet hole 53, the range of the water mist emitted is controlled to be within the coverage range of 40cm-50cm outside the outermost layer of the coated side brush assembly, thereby effectively controlling the diffusion of smoke and dust.

[0076] The dynamic water mist field is driven by centrifugal force, and the water mist coverage accurately follows the working radius of the side brush up to 1.2m, ensuring that the dust suppression area completely coincides with the trajectory of the garbage lifting; The rotational kinetic energy of the brush disc 4 is used to replace the high-pressure pump, refining the water mist particle size to 20μm while reducing the water pump power consumption by 40%; The outlet hole 53 adopts a streamlined design without sharp corners and dead angles, and combined with centrifugal force reverse flushing, the risk of clogging is reduced by 75%.

[0077] In the dual-stage water supply structure of the main channel 51 and the secondary channel 52, the main channel 51 adopts a tapered flow channel with an inlet diameter of 20 mm and an outlet diameter of 8 mm, accelerating the water flow rate from 2 m / s to 8 m / s through the Bernoulli effect; The inner wall is electrochemically polished to Ra≤0.2μm, reducing the resistance coefficient along the way to λ=0.015; The annular cavity of the secondary flow channel 52 is designed with a cross-sectional size of 10×5mm. The volume changes dynamically with the rotational speed. The centrifugal force causes the water pressure to increase from 0.2MPa to 0.6MPa, forming a Venturi tube effect, so that the water flow velocity reaches a critical value of 15m / s before the outlet hole 53, ensuring the atomization effect.

[0078] The best spray angle is formed by setting the outlet hole 53 to an inclination angle of 45°-50°. 12 groups of holes are arranged in a spiral distribution through the outlet hole 53 with a pitch of 15°, so that the water mist coverage rate reaches 92% in the 40-50cm area.

[0079] The paradigm shift from passive spraying to active dynamic control. Through the deep coupling of centrifugal force field and fluid dynamics, the efficiency bottleneck of traditional technology is solved.

[0080] Example 2 Reference Figure 10-13 As shown, the difference between this embodiment and embodiment 1 is that the side brush assembly can be replaced by a cleaning assembly, and the cleaning assembly includes a motor base 9 installed below the second driving assembly 3; The upper part of the steel ball motor 91 is fixedly mounted on the motor base 9, and the lower part is rotatable relative to the upper part and is fixedly connected to the disc 92; The dust suppression nozzle 93 is assembled on the lower half of the steel 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 fixed above the cover plate 95, and the motor base 9 is fixedly connected to the cover plate 95. An air blowing assembly, comprising an air blowing pipe 96 and an air blowing nozzle 97, wherein the air blowing assembly is mounted on the bottom of the tray 92 via a docking flange 961, and the air blowing nozzle 97 extends to the outside of the tray 92; The water inlet 98 is provided on the upper part of the steel ball motor 91; A sealing ring 99 is provided between the steel ball motor 91 and the disc 92; The top of the air blow 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 blow 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 suppression nozzle 93 and the air blowing assembly to rotate synchronously. The water in the water cavity 910 is thrown out through the dust suppression nozzle 93 under the action of centrifugal force, thereby realizing rotary dust reduction.

[0081] The brush body 94 is composed of a plurality of sheet-shaped brush pieces. The steel ball motor 91 is electrically connected to the control module.

[0082] To address the pain points of traditional road sweepers, such as poor adaptability in complex road conditions, incomplete cleaning of road surface gaps, and difficulty in effectively suppressing dust, a systematic cleaning solution is constructed by combining brushing, air blowing, and dust suppression: the brushing area uses the steel ball motor 91 to drive the disc 92 to rotate at high speed, which can quickly complete the rough cleaning of large-volume garbage on the road surface; the air blowing area uses wind impact technology to accurately remove hidden dust in road surface gaps; the dust suppression component can simultaneously suppress dust pollution during the efficient cleaning process, greatly improving the overall cleaning effect.

[0083] From a structural design perspective, the cleaning assembly incorporates brushing, air blowing, and dust suppression mechanisms. A steel ball motor 91 drives the rotation of a disc 92, creating a continuous process of rough cleaning, crevice cleaning, and dust suppression. Specifically, the brushing section is responsible for rough cleaning of bulky debris on the road surface, while the air blowing section utilizes airflow to remove dust from cracks in the road surface. The dust suppression component effectively suppresses dust throughout the cleaning process, achieving a dual breakthrough in both efficient cleaning and dust control.

[0084] When the steel ball motor 91 is activated, the rotation of its lower half synchronously drives the disc 92, dust suppression nozzle 93, and air blow assembly, forming a coordinated operating mechanism. To achieve efficient dust reduction, the device features a unique water chamber 910 structure: the air blow pipe 96 of the air blow assembly extends from the top through the upper half of the steel ball motor 91. The inner diameter of the upper half of the steel ball motor 91 is larger than the outer diameter of the air blow pipe 96, forming a closed water chamber 910. A sealing ring 99 between the steel ball motor 91 and the upper surface of the disc 92 effectively prevents water leakage and ensures the tightness 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). Centrifugal force causes the water to be ejected through the dust suppression nozzle 93. The 360-degree rotating dust suppression nozzle 93, in conjunction with the dust suppression nozzle aligned with the sweeping angle, achieves comprehensive dust reduction and suppresses dust raised by the brush.

[0085] It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principles of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control module 6 of the device are not fully described. However, those skilled in the art can clearly understand the details of the power mechanism, power supply system and control module 6 on the premise that they understand the principles of the above invention. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art. The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0086] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A road sweeper with a road sweeping mechanism, characterized in that: include: A vehicle body (1), wherein a group of receiving grooves (11) are provided below the vehicle body (1), and a cleaning component is provided in the receiving grooves (11), wherein the cleaning component comprises: a side brush assembly for cleaning the ground, a first drive assembly (2) for controlling the side brush assembly to rise / lower from the receiving groove (11), and a second drive assembly (3) for controlling the side brush assembly to rotate from the bottom of the vehicle body (1) toward the inner / outer side; The side brush assembly comprises a brush disc (4) connected to the second drive assembly (3), a third drive assembly (41) for controlling the clockwise / counterclockwise rotation of the brush disc (4), a bristle group (42) arranged below the brush disc (4), the bristle group (42) being arranged in sequence from the outside to the inside with 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) being shortened step by step from the outside to the inside; The brush disc (4) is driven to rotate by the third driving assembly (41), and the brush sweeping area (421) is used to roughly clean the large garbage on the road surface, and the seam washing area (422) is used to impact the road surface with wind flow, and the internal suction area (423) is used to absorb the dust carried by the wind flow impact and collect it into the internal storage box (12) of the vehicle body (1); The side of the brush disc (4) further includes a dust suppression component (5), which drives the brush disc (4) to rotate via the third drive component (41), and cooperates with the dust suppression component (5) to radiate small water droplets outward to suppress dust brought up by the brush sweeping area (421); A control module (6), wherein the control module (6) is electrically connected to the first drive assembly (2), the second drive assembly (3), and the third drive assembly (41).

2. A road sweeper with a road 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 through the visual monitoring components (8) and feed back different road surface morphology parameters to the control module (6). The control module (6) cooperates with the first driving component (2) according to the different road surface morphologies to control the descending height of the side brush component; The road width and obstacles are monitored by the visual monitoring component (8), and the parameters are fed back to the control module (6). The control module (6) cooperates with the second drive component (3) according to the road width and obstacle parameters to control the lateral extension distance of the side brush component.

3. The road sweeper with a road sweeping mechanism according to claim 1, characterized in that: It also includes a dust collection component arranged in the storage groove (11), wherein the dust collection component in the storage state is located above the cleaning component in the storage state, and the dust collection component includes: A suction nozzle assembly, a fourth drive assembly (71) for controlling the suction nozzle assembly to extend downward from the storage slot (11), and a fifth drive assembly (72) for controlling the suction nozzle assembly to rotate and extend from the bottom of the vehicle body (1) toward the outer edge, wherein the fourth drive assembly (71) and the fifth drive assembly (72) are electrically connected to the control module (6).

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

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

6. A road sweeper with a road sweeping mechanism according to claim 5, characterized in that: The third driving assembly (41) comprises a main disc body (43) fixedly mounted on the support rod (32), a second motor (411) mounted above the main disc body (43), and a gear (412) arranged on the output shaft of the second motor (411); the brush disc (4) comprises a sub-disc body (44) rotatably mounted on the side of the main disc body (43); an inner ring above the sub-disc body (44) is provided with a ring gear (413); the ring gear (413) cooperates with the gear (412) to drive the sub-disc body (44) to rotate.

7. A road sweeper with a road sweeping mechanism according to claim 6, characterized in that: The brushing area (421) comprises a plurality of first bristles (4211) installed in the outer ring area below the auxiliary disc (44), wherein the first bristles (4211) are cylindrical brush filaments with the ends slightly bent outward, and the outer layer of the first bristles (4211) is coated with a wear-resistant layer (4212).

8. The road sweeper with a road sweeping mechanism according to claim 6, characterized in that: The seam washing area (422) comprises a plurality of second bristles (4221) installed in the middle ring area below the auxiliary disk (44), a plurality of air outlet holes (4222) arranged below the main disk (43) and close to the second bristles (4221), and an air blow pump (4223) arranged above the main disk (43), wherein the air blow pump (4223) is electrically connected to the control module (6), and the air blow pump (4223) is connected to the air outlet holes (4222), and the second bristles (4221) are tapered brush wires with serrated edges.

9. The road sweeper with a road sweeping mechanism according to claim 6, characterized in that: The internal suction area (423) includes a suction hole (4231) provided in the middle portion below the main disk body (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); and the suction hole (4231) is controlled by the suction air pump (4232) to absorb dust into the storage box (12); The dust reduction assembly (5) comprises a main flow channel (51) arranged inside the main disk (43), a secondary flow channel (52) arranged in the side ring of the secondary disk (44), and a plurality of outlet holes (53) connecting the secondary flow channel (52) with the outside, wherein 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 disk (44) is rotated, the main flow channel (51) guides the water flow into the secondary flow channel (52), and the water in the secondary flow channel (52) is dispersed through the outlet holes (53) under the action of centrifugal force.

10. The road sweeper with a road sweeping mechanism according to claim 1, characterized in that: The side brush assembly can be replaced by a cleaning assembly, and the cleaning assembly includes a motor seat (9) installed below the second drive assembly; A steel ball motor (91), the upper half of which is fixedly mounted on the motor base (9), and the lower half of which is rotatable relative to the upper half and is fixedly connected to the disc body (92); A dust suppression nozzle (93) is mounted on the lower half of the steel 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 fixed above the disc body (92) by the cover plate (95), and the motor base (9) is fixedly connected to the cover plate (95); An air blowing assembly, comprising an air blowing pipe (96) and an air blowing nozzle (97), wherein the air blowing assembly is mounted on the bottom of the disk body (92) via a docking flange (961), and the air blowing nozzle (97) extends to the outside of the disk body (92); A water inlet (98) is provided on the upper portion of the steel ball motor (91); A sealing ring (99) is provided 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), and 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 suppression nozzle (93) and the air blowing assembly to rotate synchronously, and the water in the water cavity (910) is thrown out through the dust suppression nozzle (93) under the action of centrifugal force, thereby achieving rotary dust reduction.

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