Cleaning device for road cleaning vehicle and road cleaning vehicle including same

Abstract

The present invention provides a cleaning device for a road cleaning vehicle and a road cleaning vehicle including the same. The cleaning device is adapted to be suspended at the rear of the road cleaning vehicle and includes at least one modular cleaning unit. The modular cleaning unit includes a cleaning section and a suction section. The cleaning section includes a cleaning section frame and a rotary cleaning assembly. The cleaning section frame is adapted to be suspended at the rear of the road cleaning vehicle. The rotary cleaning assembly includes a rotary joint rotatably attached to the cleaning section frame, a motor for driving the rotary joint to rotate, a spray bar extending outward from the rotary joint, and a nozzle attached to the end of the spray bar. The nozzle is vertically downwardly oriented to vertically downwardly jet water flow to wash the road. The suction section is attached to the rear of the cleaning section frame and is configured to suck the sewage generated by washing the road.

Description

Technical Field

[0001] The present invention relates to the field of urban road cleaning, and more particularly, to a cleaning device for a road cleaning vehicle, which is adapted to be suspended at the rear of the road cleaning vehicle so as to clean the road below as the road cleaning vehicle moves, and also relates to a road cleaning vehicle including the cleaning device. Background Art

[0002] With the continuous improvement of the urban road network and the improvement of people's living standards, the requirements for road cleaning are becoming more and more stringent. The cleanliness of the road directly reflects the appearance of the city. Traditional road sweepers include high-pressure cleaners and road sweepers, but people prefer to use high-pressure cleaners. Currently, the high-pressure cleaners on the market use suction nozzles, sweeping disks and fan-shaped high-pressure water to clean the road. After flushing, traces of sewage will remain on the road, especially when the road is seriously polluted, the traces of sewage will be more obvious.

[0003] Traditional high-pressure cleaners use V-shaped jet high-pressure nozzles, and multiple groups of V-shaped jet surfaces overlap each other to form a wide V-shaped jet surface to flush the road surface. However, in the area where the V-shaped jet surfaces overlap each other, due to the mutual impact of the V-shaped jet surfaces, the pressure (impact force) at the overlapping area is offset from each other, resulting in serious water pressure loss. This causes the garbage in the overlapping area to be unable to be effectively peeled off the road, and at the same time, the amount of water is large. Therefore, after the traditional high-pressure cleaner passes by, there will be an alternating zebra-like sewage belt of "road strips that are cleaned in the non-overlapping area" and "road strips that are not cleaned in the overlapping area and have a large amount of sewage" on the road. However, if the V-shaped nozzles do not overlap, there will be an area that cannot be cleaned between the V-shaped nozzles. Therefore, after the high-pressure cleaner passes by, there will still be an alternating zebra-like sewage belt of "cleaned road strips" and "uncleaned road strips". In summary, no matter how the V-shaped nozzles of the traditional high-pressure cleaner are arranged, the problem of generating the zebra-like sewage belt cannot be solved. It can be said that this is an unavoidable problem of the V-shaped nozzles.

[0004] In addition, the distance between the nozzles of the traditional high-pressure cleaner and the ground is relatively far, about 100 - 300 mm, which causes serious pressure loss of the high-pressure water ejected from the V-shaped nozzles from the nozzle to the ground, and serious water atomization phenomenon. As a result, the impact force of the water reaching the road is insufficient, and the ground cleaning is not thorough. In addition, due to the serious water atomization phenomenon, the impact force of the water flow on the ground is very small, which further causes the ground to be unable to be fully cleaned. However, if the nozzle height is reduced, the number of nozzles needs to be increased, which will lead to insufficient water supply and insufficient pressure in the water system, and will affect the installation and avoidance functions of the nozzles to a certain extent.

[0005] In addition, traditional high-pressure cleaners have poor adaptability to existing roads and towing vehicles. Or rather, the configuration of traditional high-pressure cleaners cannot be flexibly changed according to factors such as the road, the towing vehicle, and the number of times of repeated road cleaning in one trip. In particular, after a traditional high-pressure cleaner is manufactured, parameters such as its width, length, and the number of cleaning component groups are fixed. This means that for roads to be cleaned with different widths or towing vehicles with different widths, different types of high-pressure cleaners often need to be manufactured, resulting in high production costs for road cleaning equipment and low utilization rates for single types of high-pressure cleaners.

[0006] Therefore, in the field of road cleaning, there is a need for a road cleaning device that can effectively remove garbage and dust on the road without leaving zebra-like sewage strips and whose configuration can be flexibly changed. Summary of the Invention

[0007] To solve at least one of the above-mentioned problems in the prior art, the present invention provides a cleaning device for a road cleaning vehicle, which includes at least one modular cleaning unit. Among them, the modular cleaning unit includes:

[0008] A cleaning part, the cleaning part includes a cleaning part frame and a rotary cleaning assembly. The rotary cleaning assembly includes a rotary joint rotatably attached to the cleaning part frame, a motor for driving the rotary joint to rotate, a spray bar extending outward from the rotary joint, and a nozzle attached to the end of the spray bar. The nozzle is configured to be directed vertically downward so as to spray water vertically downward to wash the road; and

[0009] A suction part attached to the rear part of the cleaning part frame, and the suction part is configured to suck the sewage generated by washing the road.

[0010] According to an optional embodiment of the present invention, the cleaning device includes a plurality of modular cleaning units, and the plurality of modular cleaning units are arranged in an M×N matrix, where M represents the number of modular cleaning units arranged along the longitudinal direction, N represents the number of modular cleaning units arranged along the transverse direction, and M≥1 and N>1.

[0011] According to an optional embodiment of the present invention, there are at least two rotary cleaning assemblies in the cleaning device, and the movement trajectories of the nozzles of adjacent rotary cleaning assemblies do not cross each other.

[0012] According to an optional embodiment of the present invention, the nozzle is configured to spray a conical water flow.

[0013] According to an alternative embodiment of the present invention, the modular cleaning unit further includes a height limiting portion, the height limiting portion includes a cantilever fixed to the cleaning portion frame and extending from the cleaning portion frame, and a roller rotatably provided at the end of the cantilever, the roller being configured to contact the road surface to define the height of the nozzle relative to the road surface.

[0014] According to an alternative embodiment of the present invention, the height of the nozzle relative to the road surface is limited between 30 mm and 60 mm.

[0015] According to an alternative embodiment of the present invention, there are at least two rotary cleaning assemblies arranged in a transverse direction in the cleaning device, wherein each rotary cleaning assembly is configured such that the water rings formed on the road surface by the water jets ejected from the nozzles of adjacent rotary cleaning assemblies are tangent to each other or partially overlap.

[0016] According to an alternative embodiment of the present invention, the cleaning device further includes a controller, and there are at least two rotary cleaning assemblies in the cleaning device, and the controller is configured to control each rotary cleaning assembly such that the spray bars of adjacent rotary cleaning assemblies have different angular positions relative to each other.

[0017] According to an alternative embodiment of the present invention, the cleaning device further includes a hydraulic pump, and the hydraulic pump is in fluid communication with the corresponding nozzles through respective spray bars to supply water flow to the corresponding nozzles through the respective spray bars.

[0018] The present invention also provides a road cleaning vehicle, wherein the road cleaning vehicle includes the cleaning device as described above, and the cleaning device is attached to the rear part of the road cleaning vehicle along the longitudinal direction.

[0019] According to an alternative embodiment of the present invention, the cleaning device includes a plurality of modular cleaning units, and the plurality of modular cleaning units are arranged in a transverse direction such that the cleaning device has substantially the same width as the road cleaning vehicle.

[0020] The present invention can be embodied in the schematic embodiments in the drawings. However, it should be noted that the drawings are merely schematic, and any variations conceived under the teachings of the present invention should be considered to be included within the scope of the present invention, and the scope of the present invention is only defined by the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings illustrate exemplary embodiments of the present invention. These drawings should not be construed as necessarily limiting the scope of the present invention. The same numbers and / or similar reference numerals throughout the drawings may refer to the same and / or similar elements. In each of the drawings:

[0022] Figure 1 is a schematic simplified bottom view of the cleaning device according to the present invention;

[0023] Figure 2 is a schematic perspective top view of the cleaning device according to the present invention, wherein for clarity, the suction parts of the respective modular cleaning units are omitted;

[0024] Figure 3 is a schematic perspective bottom view of the cleaning device according to the present invention, wherein for clarity as well, the suction parts of the respective modular cleaning units are omitted;

[0025] Figure 4 is a schematic simplified bottom view of the modular cleaning unit of the cleaning device according to the present invention;

[0026] Figure 5 is a schematic perspective top view of the cleaning part of the modular cleaning unit of the cleaning device according to the present invention;

[0027] Figure 6 is a schematic perspective bottom view of the cleaning part of the modular cleaning unit of the cleaning device according to the present invention; and

[0028] Figure 7 is a schematic simplified bottom view of the cleaning device according to another alternative embodiment of the present invention. Detailed Embodiments

[0029] The present invention will now be described in more detail with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as necessarily limited to the exemplary embodiments disclosed herein. On the contrary, these exemplary embodiments are provided only to illustrate the present invention and to convey the concept of the present invention to those skilled in the art.

[0030] Optional but non - limiting embodiments of the cleaning device according to the present invention will be described in detail below with reference to the respective drawings. Among them, Figure 1 is a schematic simplified bottom view of the cleaning device according to the present invention; Figure 2 is a schematic perspective top view of the cleaning device according to the present invention, wherein for clarity, the suction parts of the respective modular cleaning units are omitted; Figure 3 is a schematic perspective bottom view of the cleaning device according to the present invention, wherein for clarity as well, the suction parts of the respective modular cleaning units are omitted; Figure 4 is a schematic simplified bottom view of the modular cleaning unit of the cleaning device according to the present invention; Figure 5 is a schematic perspective top view of the cleaning part of the modular cleaning unit of the cleaning device according to the present invention; Figure 6It is a schematic bottom perspective view of a cleaning unit of a modular cleaning unit of a cleaning device according to the present invention; Figure 7 It is a schematic bottom simplified view of a cleaning device according to another alternative embodiment of the present invention. In each of the drawings, the longitudinal direction is indicated by an arrow LL', and of course the longitudinal direction LL' can also be referred to as the length direction, wherein the arrow L points to the road cleaning vehicle (i.e., the front), and the arrow L' points to the rear; the transverse direction is indicated by an arrow TT', and of course the transverse direction TT' can also be referred to as the width direction; the vertical direction is indicated by an arrow VV', and of course the vertical direction VV' can also be referred to as the height direction. However, it should be noted that the above definitions of relative orientations are only given for the purpose of better explaining the technical solution of the present invention through the drawings, and should not be construed in any way as a limitation on the protection scope of the present invention.

[0031] Reference Figures 1 - 3 , the present invention provides a cleaning device for a road cleaning vehicle, which is suitable for being suspended to the rear of the road cleaning vehicle, so as to clean the road below as the road cleaning vehicle moves. The cleaning device according to the present invention will be described in detail below with reference to the drawings. Reference Figures 1 - 3 , the cleaning device according to the present invention includes at least one modular cleaning unit U. Although three modular cleaning units U arranged along the transverse direction TT' are shown in the figure, those skilled in the art can understand that the cleaning device can include any number of modular cleaning units U. For example, in order to adapt to the narrower body of the road cleaning vehicle, the cleaning device can include a smaller number of modular cleaning units U arranged along the transverse direction TT', or, in order to repeatedly clean the road in a single trip, the cleaning device can include multiple rows of modular cleaning units U arranged along the longitudinal direction LL', such as Figure 7 the 6 modular cleaning units U arranged in a 2×3 matrix shown in, in which case the cleaning device can perform multiple cleaning of the road in a single trip, so that it is possible to more thoroughly remove garbage, dust, etc. on the road.

[0032] Next, reference is made to Figures 4 - 6 for a detailed description of the modular cleaning unit U. As Figure 4As shown, the modular cleaning unit U generally includes a cleaning section 100 and a suction section 200 attached to the rear of the cleaning section 100, wherein the cleaning section 100 is configured to flush the road with high-pressure water flow, and the suction section 200 is configured to suck the sewage generated by flushing the road. Specifically, the cleaning section 100 includes a cleaning section frame 110 and a rotary cleaning assembly 120 attached to the cleaning section frame 110, wherein the cleaning section frame 110 is adapted to be suspended from the rear of a road cleaning vehicle, and the rotary cleaning assembly 120 includes a rotary joint 122 rotatably attached to the cleaning section frame 110, wherein the rotary joint 122 is adapted to rotate about a rotation axis XX' extending along the vertical direction VV', and the rotary cleaning assembly 120 further includes a spray bar 123 extending outward from the rotary joint 122 in the radial direction (i.e., the direction perpendicular to the rotation axis XX' of the rotary joint 122) and a nozzle 124 attached to the end of the spray bar 123, wherein the nozzle 124 is vertically downwardly directed so as to vertically downwardly eject high-pressure water flow. The rotary cleaning assembly 120 further includes a motor 121 for driving the rotary joint 122 to rotate, for example, a hydraulic motor, an electric motor, etc.

[0033] The above describes the basic composition of the cleaning device according to the present invention, and the operation thereof is described below on this basis. When in use, the cleaning device is suspended to the rear of a road cleaning vehicle, so that the road below can be cleaned as the road cleaning vehicle moves. In particular, since the cleaning device has a modular configuration, the number and arrangement of modular cleaning units U can be set according to, for example, the width of the road to be cleaned and / or the width of the road cleaning vehicle and / or the number of cleaning times per scheduled single stroke. For example, when the width of the road to be cleaned and / or the width of the road cleaning vehicle is large, a larger number of modular cleaning units U can be set along the transverse direction TT', that is, the number of modular cleaning units U arranged along the transverse direction TT' can be set according to the width of the road to be cleaned and / or the width of the road cleaning vehicle, so the cleaning device according to the present invention can freely match the existing roads and existing road cleaning vehicles; when it is scheduled to perform multiple cleanings on the road in a single trip, multiple rows of modular cleaning units U can be set along the longitudinal direction LL', for example, when it is scheduled to perform triple cleaning on the road in a single trip, three rows (or three) of modular cleaning units U can be set along the longitudinal direction LL', that is, the number of modular cleaning units U arranged along the longitudinal direction LL' can be set according to the predetermined number of cleanings in a single trip. Therefore, the cleaning device according to the present invention is suitable for roads of any width, road cleaning vehicles of any width, and suitable for cleaning the road any number of times, which greatly reduces the configuration cost of the road cleaning equipment and greatly broadens the application occasions. Moreover, the cleaning device uses an independent motor 121 to drive the spray rod 123 and then drive the spray head 124 to rotate, so that the high-pressure water flow sprayed by the spray head 124 can form a water ring wc on the road (see Figure 1 and Figure 4 ), further, when the road cleaning vehicle moves, the water ring wc will move with it, thereby cleaning the road along the moving track of the water ring wc, so that a single nozzle 124 can clean a larger area, and at the same time, there is no need to orient the nozzle 124 tilted downward, because there is no need to use the reaction force of the sprayed water flow to drive the nozzle 124 to rotate. Further, since the nozzle 124 is oriented vertically downward rather than tilted downward, the distance between the nozzle 124 and the road is minimized. In other words, the stroke of the high-pressure water flow between the nozzle 124 and the road is minimized, which minimizes the pressure loss of the high-pressure water flow on the stroke, thereby ensuring that the high-pressure water flow still has a sufficiently large water pressure when it reaches the road, so that garbage, dust, etc. attached to the road can be effectively removed. Therefore, the cleaning device according to the present invention not only has a wide range of applications as described above, but also can effectively clean roads.

[0034] Alternatively, if Figures 4 - 6As shown, each modular cleaning unit U includes at least two rotating cleaning components 120 (e.g., arranged along the transverse direction TT’), wherein the at least two rotating cleaning components 120 are configured such that the movement trajectories mt of the nozzles 124 of any one rotating cleaning component 120 and the movement trajectories mt of the nozzles 124 of the adjacent rotating cleaning component 120 do not cross each other (i.e., the movement trajectories mt of the nozzles 124 of adjacent rotating cleaning components 120 do not cross each other).

[0035] According to the above technical solution, since the movement trajectories mt of the nozzles 124 of adjacent rotating cleaning components 120 do not cross each other, collisions between the nozzles 124 of adjacent rotating cleaning components 120 during rotation can be avoided, thus ensuring the reliability and safety of the cleaning device during use.

[0036] In addition, it should be noted that although each modular cleaning unit U is shown in the figure as including two rotating cleaning components 120, those skilled in the art will understand that the specific number of rotating cleaning components 120 does not constitute a limitation to the present invention. Modular cleaning units U including any number of rotating cleaning components 120 should be regarded as being under the teaching of the present invention and are thus included within the scope of the present invention.

[0037] Further optionally, as Figures 1 - 3 shown, the cleaning device includes at least two modular cleaning units U (e.g., arranged along the transverse direction TT’), wherein the at least two modular cleaning units U are configured such that the movement trajectories mt of the nozzles 124 of adjacent rotating cleaning components 120 do not cross each other.

[0038] According to the above technical solution, as described above, collisions between the nozzles 124 of adjacent rotating cleaning components 120 in the cleaning device during rotation can be effectively avoided, thus further ensuring the reliability and safety of the cleaning device during use.

[0039] Optionally, as Figure 3 and Figure 6 shown, the high-pressure water flow ejected by the nozzle 124 is a conical water flow (wp). Therefore, the water flow can be further pressurized at the vertex of the cone, i.e., at the outlet of the nozzle 124, so as to be able to more effectively remove garbage, dust, etc. attached to the road. Those skilled in the art will understand that the high-pressure water flow ejected by the nozzle 124 can also be of other shapes, for example, cylindrical.

[0040] Optionally, as Figures 2 - 3 、 Figures 5 - 6As shown, the modular cleaning unit U further includes a height limiting part 130. The height limiting part 130 includes a cantilever 131 fixed to the cleaning part frame 110 and horizontally extending from the cleaning part frame 110, and a roller 132 rotatably provided at the end of the cantilever 131. The roller 132 is configured to contact the road surface to define the distance between the nozzle 124 and the road surface. Therefore, through the height limiting part 130, the nozzle 124 can be limited at a certain height, which can protect the nozzle 124 from being collided by obstacles on the road surface, thereby further improving the safety and reliability of the present cleaning device. Further optionally, each modular cleaning unit U includes at least two height limiting parts 130 extending forward (i.e., in the direction of the road cleaning vehicle) from both sides in the transverse direction TT' of the cleaning part frame 110.

[0041] Optionally, each modular cleaning unit U includes at least two rotary cleaning assemblies 120 arranged along the transverse direction TT'. Among them, each rotary cleaning assembly 120 and the height limiting part 130 are configured such that the water rings wc formed by the high-pressure water jets ejected from the nozzles 124 of adjacent rotary cleaning assemblies 120 are tangent to each other or partially overlap on the road surface, as Figure 4 shown. According to this technical solution, since the water rings wc formed by the high-pressure water jets ejected from the nozzles 124 of adjacent rotary cleaning assemblies 120 are tangent to each other or partially overlap on the road surface, after each modular cleaning unit U cleans the road surface, there will be no uncleaned area left between adjacent rotary cleaning assemblies 120, which avoids leaving a sewage belt in the form of a zebra crossing as in the prior art.

[0042] Further optionally, as Figures 1 - 3 shown, the cleaning device according to the present invention includes at least two modular cleaning units U arranged along the transverse direction TT'. Among them, each rotary cleaning assembly 120 and the height limiting part 130 of each modular cleaning unit U are configured such that the water rings wc formed by the high-pressure water jets ejected from the nozzles 124 of adjacent rotary cleaning assemblies 120 are tangent to each other or partially overlap on the road surface, as Figure 1 shown. According to this technical solution, as described above, after the present cleaning device cleans the road surface, there will be no uncleaned area left between adjacent rotary cleaning assemblies 120, which avoids leaving a sewage belt in the form of a zebra crossing as in the prior art.

[0043] Optionally, the distance between the nozzle 124 and the road (i.e., the height of the nozzle 124 relative to the road) is between 30 mm and 60 mm, and further optionally, not greater than 50 mm. When the distance between the nozzle 124 and the road is within the above range, the nozzle 124 can be effectively protected from being collided by obstacles on the road, and at the same time, it can be ensured that the water flow ejected from the nozzle 124 still has a high enough pressure when it reaches the road to remove garbage, dust, etc. attached to the road.

[0044] Optionally, the cleaning device according to the present invention further includes a controller (not shown), and the controller is configured to control each of the rotary cleaning assemblies 120 such that the spray bars 123 of each adjacent rotary cleaning assembly 120 form a non-zero angle with each other, that is, have different angular positions from each other. This makes it such that although the water rings wc formed by the high-pressure water flows ejected from the nozzles 124 of each adjacent rotary cleaning assembly 120 are tangent to or partially overlap each other on the road, due to the existence of the above non-zero angle, the high-pressure water flows ejected from the nozzles 124 of each adjacent rotary cleaning assembly 120 do not pass through the overlapping portion of the water ring wc at the same time, that is to say, the adjacent high-pressure water flows do not meet, which makes the adjacent high-pressure water flows not impact each other and cause pressure loss, thereby further ensuring that each water flow reaching the road still has enough pressure to impact the road so as to effectively remove garbage, dust, etc. attached to the road.

[0045] Optionally, as Figures 1 - 6 shown, the suction part 200 is attached to the rear part of the cleaning part frame 110. In other words, the suction part 200 is adjacent to but does not overlap with the cleaning part 100 in the longitudinal direction LL'. This makes it such that the suction of sewage upward by the suction part 200 does not affect the downward ejection of high-pressure water flow by the cleaning part 100, and the sewage sucked up by the suction part 200 does not contaminate the cleaning part 100. On the contrary, if the suction part 200 overlaps with the cleaning part 100, then the sewage sucked up by the suction part 200 may contaminate the various components of the cleaning part 100, and the impurities in the sewage may enter the space between the cleaning part frame 110 and the rotary joint 122, thereby affecting the rotation of the rotary joint 122, and these impurities may block the nozzle 124. Therefore, through the above technical solution, the reliability of the present cleaning device can be further ensured.

[0046] Optionally, the cleaning device according to the present invention further includes a hydraulic pump (not shown), wherein the hydraulic pump is in fluid communication with the corresponding nozzles 124 through each spray bar 123 so as to supply high-pressure water flow to the nozzles 124 through each spray bar 123.

[0047] The preferred but non-limiting embodiments of the cleaning device according to the present invention have been described in detail with reference to the accompanying drawings. For those of ordinary skill in the art, modifications and supplements to the technology and structure should clearly be considered to be included within the scope of the present invention without departing from the scope and essence of the present disclosure as set forth in the following claims. Therefore, these modifications and supplements that can be envisioned under the teachings of the present invention should be considered a part of the present disclosure. The scope of the present disclosure is defined by the following appended claims and includes equivalent technologies known at the filing date of the present disclosure application and equivalent technologies not yet foreseen.

Claims

1. A cleaning device for a road cleaning vehicle, comprising at least one modular cleaning unit (U), wherein, The modular cleaning unit (U) includes: A cleaning section (100), the cleaning section (100) including a cleaning section frame (110) and a rotary cleaning assembly (120), the rotary cleaning assembly (120) including a rotary joint (122) rotatably attached to the cleaning section frame (110), a motor (121) for driving the rotary joint (122) to rotate, a spray bar (123) extending outward from the rotary joint (122), and a spray head (124) attached to the end of the spray bar (123), wherein the spray head (124) is configured to be directed vertically downward to spray water vertically downward to wash the road, and to eject a conical water flow (wp); A suction section (200) attached to the rear of the cleaning section frame (110), wherein the suction section (200) is configured to suck the sewage generated by washing the road; and A height limiting section (130), the height limiting section (130) being fixed to the cleaning section frame (110) and configured to limit the height of the spray head (124) relative to the road such that the water rings (wc) formed by the water flows ejected by the spray heads (124) of the rotary cleaning assemblies (120) adjacent to each other in the transverse direction (TT') are tangent to each other or partially overlap on the road.

2. The cleaning device according to claim 1, wherein, The cleaning device includes a plurality of modular cleaning units (U), the plurality of modular cleaning units (U) being arranged in an M×N matrix, where M represents the number of modular cleaning units (U) arranged in the longitudinal direction (LL'), N represents the number of modular cleaning units (U) arranged in the transverse direction (TT'), and where M≥1 and N>1.

3. The cleaning device according to claim 1, wherein, There are at least two rotary cleaning assemblies (120) in the cleaning device, and wherein the movement trajectories (mt) of the spray heads (124) of adjacent rotary cleaning assemblies (120) do not cross each other.

4. The cleaning device according to claim 1, wherein, The height limiting section (130) includes a cantilever (131) fixed to the cleaning section frame (110) and extending from the cleaning section frame (110), and a roller (132) rotatably provided at the end of the cantilever (131), the roller (132) being configured to contact the road to limit the height of the spray head (124) relative to the road.

5. The cleaning device according to claim 4, wherein, The height of the spray head (124) relative to the road is limited to be between 30 mm and 60 mm.

6. The cleaning device according to any one of claims 1 to 5, wherein, The cleaning device further includes a controller, and there are at least two rotary cleaning assemblies (120) in the cleaning device, and wherein the controller is configured to control each rotary cleaning assembly (120) such that the spray bars (123) of adjacent rotary cleaning assemblies (120) have different angular positions relative to each other.

7. The cleaning device according to any one of claims 1 to 5, wherein, The cleaning device further includes a hydraulic pump, wherein the hydraulic pump is in fluid communication with the corresponding spray heads (124) through the respective spray bars (123) to supply water flow to the corresponding spray heads (124) through the respective spray bars (123).

8. A road cleaning vehicle, wherein, The road cleaning vehicle includes the cleaning device according to any one of claims 1 to 7, the cleaning device being attached to the rear of the road cleaning vehicle in the longitudinal direction (LL').

9. The road cleaning vehicle according to claim 8, wherein, The cleaning device includes a plurality of modular cleaning units (U), and the plurality of modular cleaning units (U) are arranged along a transverse direction (TT') such that the cleaning device has the same width as the road cleaning vehicle.

Images