CN213328858U - Washer for road washing vehicle and road washing vehicle comprising same - Google Patents

Abstract

The utility model provides a road cleaning vehicle that is used for purger of road cleaning vehicle and includes it, the purger includes main belt cleaning device and supplementary belt cleaning device, main belt cleaning device includes at least one modularization cleaning unit, the modularization cleaning unit includes: a wash section including a wash section frame and a rotary wash assembly including a rotary joint rotatably attached to the wash section frame, a motor for driving the rotary joint to rotate, a main spray bar extending outwardly from the rotary joint, and a main spray head attached to an end of the main spray bar, wherein the main spray head is oriented vertically downward so as to spray a water stream vertically downward to wash a road; and a suction part attached to a rear portion of the washing part frame, wherein the suction part is configured to suction sewage generated by washing the road. The auxiliary cleaning device comprises an auxiliary spray rod adjacent to the main cleaning device and an auxiliary spray head arranged on the auxiliary spray rod.

Description

Washer for road washing vehicle and road washing vehicle comprising same

Technical Field

The present invention relates to the field of urban road cleaning, and more particularly, to a washer for road cleaning vehicles, which is suitable for hanging to the rear portion of the road cleaning vehicle so as to wash the road below along with the movement of the road cleaning vehicle, and also relates to a road cleaning vehicle including the washer.

Background

With the continuous improvement of urban road networks and the improvement of living standard of people, the requirement for road cleaning is more and more strict. The cleanliness of the road directly reflects the appearance of the city. Conventional sweeping machines include a high pressure washer and a sweeper, but people prefer to use a high pressure washer. At present, the high-pressure cleaning machines on the market use suction nozzles, sweeping discs and fan-shaped high-pressure water to clean roads. After washing, the trace of the sewage is left on the road, and particularly, when the road is seriously polluted, the trace of the sewage is more obvious.

Conventional high pressure cleaners employ V-shaped spray high pressure nozzles with multiple sets of V-shaped spray surfaces overlapping to form a wide V-shaped spray surface to flush the road surface. However, in the area where the respective V-shaped ejection faces overlap with each other, since the respective V-shaped ejection faces impact with each other, so that the pressures (impact forces) at the overlapping area cancel each other out, the water pressure loss is severe, and this results in that the trash in the overlapping area cannot be effectively peeled off the road with a large amount of water. Therefore, after the conventional high pressure washer passes, a zebra-like sewage hose in which "road strips that are cleaned at a non-overlapping area" and "road strips that are not cleaned at an overlapping area and have a large amount of sewage" alternate with each other is generated on the road. However, if the chevron nozzles do not overlap, an uncleaned area remains between the individual chevron nozzles. Therefore, after the high-pressure washer passes by, a zebra-shaped dirty water belt with mutually alternated 'cleaned road strips' and 'unwashed road strips' is still generated. In summary, the above-mentioned problem of the generation of zebra-like sewage lines cannot be solved regardless of the arrangement of the V-shaped nozzles of the conventional high pressure washer. It can be said that this is a problem that the V-shaped nozzle cannot avoid.

In addition, the distance between the nozzle of traditional high pressure cleaner and the ground is far away, is about 100 ~ 300mm, and this makes the pressure loss of V-arrangement nozzle spun water under high pressure from the nozzle to ground serious, and water atomization phenomenon is serious moreover to the impact force that leads to the water that arrives the road is not enough, and the ground is clean thoroughly, in addition, because water atomization phenomenon is serious, rivers are very little to the impact force on ground, thereby further lead to ground can't be fully washed. However, if the nozzle height is reduced, the number of nozzles needs to be increased, which results in insufficient water supply and insufficient pressure in the water system, and affects the installation and avoidance functions of the nozzles to some extent.

In addition, the traditional high-pressure cleaning machine has poor adaptability to the existing roads and traction vehicles, or the configuration of the traditional high-pressure cleaning machine cannot be flexibly changed according to the roads, the traction vehicles, the times of repeatedly cleaning the roads in one stroke and the like. In particular, the width, length, number of cleaning units and other parameters of the conventional high-pressure cleaning machine are fixed after the conventional high-pressure cleaning machine is manufactured, so that for roads to be cleaned with different widths or traction vehicles with different widths, different types of high-pressure cleaning machines are required to be manufactured, and the production cost of road cleaning equipment is high, and the utilization rate of a single type of high-pressure cleaning machine is low.

Therefore, in the field of road cleaning, there is a need for a road cleaning apparatus that can effectively remove dirt and dust from a road without leaving a zebra-like sewage belt while the configuration thereof can be flexibly changed.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above-mentioned prior art problems, the utility model provides a purger for road cleaning vehicle, it includes main belt cleaning device and supplementary belt cleaning device, main belt cleaning device includes at least one modularization cleaning unit, wherein, modularization cleaning unit includes:

a wash section including a wash section frame and a rotary wash assembly including a rotary joint rotatably attached to the wash section frame, a main spray bar extending outwardly from the rotary joint, and a main spray head attached to an end of the main spray bar, wherein the main spray head is configured to spray a water stream downwardly to wash a road; and

a suction part attached to a rear portion of the washing part frame, wherein the suction part is configured to suction sewage generated by washing a road; and is

The auxiliary wash device includes an auxiliary spray bar fixedly mounted adjacent the main wash device and a set of auxiliary spray heads disposed on the auxiliary spray bar.

Optionally, the main nozzle is configured to be oriented vertically downward to spray a water stream vertically downward, the rotary wash assembly further comprising a motor for driving rotation of the rotary joint.

Optionally, the main nozzle is configured to be oriented obliquely downward so as to spray a water stream obliquely downward.

Optionally, the washer further comprises a controller, wherein the controller is configured to cause one or both of the primary washing device and the auxiliary washing device to operate.

Optionally, the set of auxiliary jets is configured to emit a fan-shaped stream of water.

Optionally, the auxiliary spray bar comprises a first auxiliary spray bar, the set of auxiliary spray heads comprises a first set of auxiliary spray heads evenly distributed on the first auxiliary spray bar, wherein the first auxiliary spray bar is disposed behind the main wash device and extends in a transverse direction, the first set of auxiliary spray heads being configured to be oriented forwardly and downwardly inclined.

Optionally, the first auxiliary spray bar extends across the entire width of the main wash device.

Optionally, the auxiliary spray bar comprises a second auxiliary spray bar, the set of auxiliary spray heads comprises a second set of auxiliary spray heads evenly distributed on the second auxiliary spray bar, wherein the second auxiliary spray bar is arranged laterally behind the main wash device and extends obliquely with respect to the transverse direction, the second set of auxiliary spray heads being configured to be oriented towards the underside of the main wash device.

Additionally, the present invention also proposes a road washing vehicle comprising a washer as described above, wherein the washer is attached to the rear portion of the road washing vehicle.

Optionally, the main wash device of the washer comprises a plurality of side-by-side modular wash units such that the main wash device has substantially the same width as the road wash vehicle.

The invention may be embodied as exemplary embodiments in the drawings. It is to be noted, however, that the drawings are designed solely for purposes of illustration and that any changes which come within the teachings of the invention are intended to be embraced therein and are limited only by the scope of the invention as defined in the appended claims.

Drawings

The drawings illustrate exemplary embodiments of the invention. These drawings should not be construed as necessarily limiting the scope of the invention. Like numbers and/or like reference numerals may refer to like and/or like elements throughout. In the various drawings:

fig. 1 is a schematic bottom simplified view of a main cleaning device of a cleaner according to the present invention;

fig. 2 is a schematic top perspective view of a main wash device of a washer according to the present invention, wherein the suction portion of each modular wash unit has been omitted for clarity;

fig. 3 is a schematic bottom perspective view of the main wash device of the washer according to the present invention, wherein again for the sake of clarity the suction portion of each modular wash unit has been omitted;

fig. 4 is a schematic bottom simplified view of a modular wash unit of a main wash device of a washer according to the present invention;

FIG. 5 is a schematic top perspective view of a cleaning portion of a modular cleaning unit of a main cleaning device of a cleaner according to the present invention;

FIG. 6 is a schematic bottom perspective view of a cleaning portion of a modular cleaning unit of a main cleaning apparatus of a cleaner according to the present invention;

FIG. 7 is a simplified schematic bottom view of a main wash unit of a washer according to another alternative embodiment of the present invention;

FIG. 8 is a schematic bottom simplified view of a washer according to an alternative embodiment of the present invention;

FIG. 9 is a schematic bottom simplified view of a washer according to another alternative embodiment of the present invention; and

fig. 10 is a schematic bottom simplified view of a washer according to yet another alternative embodiment of the present invention.

Detailed Description

The invention will now be described in more detail with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as necessarily limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided only to illustrate the present invention and to convey the concept of the invention to those skilled in the art.

An alternative but non-limiting embodiment of a washer according to the present invention will be described in detail below with reference to the various figures. Wherein, fig. 1 is a schematic bottom simplified view of a main washing device of a washer according to the present invention; fig. 2 is a schematic top perspective view of a main wash device of a washer according to the present invention, wherein the suction portion of each modular wash unit has been omitted for clarity; fig. 3 is a schematic bottom perspective view of the main wash device of the washer according to the present invention, wherein again for the sake of clarity the suction portion of each modular wash unit has been omitted; fig. 4 is a schematic bottom simplified view of a modular wash unit of a main wash device of a washer according to the present invention; FIG. 5 is a schematic top perspective view of a cleaning portion of a modular cleaning unit of a main cleaning device of a cleaner according to the present invention; FIG. 6 is a schematic bottom perspective view of a cleaning portion of a modular cleaning unit of a main cleaning apparatus of a cleaner according to the present invention; fig. 7 is a simplified schematic bottom view of a main cleaning device of a washer according to another alternative embodiment of the present invention. FIG. 8 is a schematic bottom simplified view of a washer according to an alternative embodiment of the present invention; FIG. 9 is a schematic bottom simplified view of a washer according to another alternative embodiment of the present invention; fig. 10 is a schematic bottom simplified view of a washer according to yet another alternative embodiment of the present invention. In the various figures, the longitudinal direction is indicated with an arrow LL ', which may of course also be referred to as the length direction, wherein arrow L points towards the road washing vehicle (i.e. the front) and arrow L' points towards the rear; the transverse direction is indicated by an arrow TT ', although the transverse direction TT' may also be referred to as the width direction; the vertical direction is indicated by an arrow VV', which may of course also be referred to as the height direction. It is to be noted, however, that the above definition of relative orientation is given only for the purpose of better illustrating the technical solution of the present invention through the accompanying drawings, which should not be construed as limiting the scope of protection of the present invention in any way.

Referring to fig. 1-3, the present invention provides a washer for a road washing vehicle adapted to be suspended to the rear of the road washing vehicle so as to wash the road therebelow as the road washing vehicle moves. The washer according to the present invention generally includes a main washing device and an auxiliary washing device adjacent to the main washing device. Referring to fig. 1-3, the main wash apparatus includes at least one modular wash unit U. Although three modular cleaning units U are shown arranged along the transverse direction TT', it will be understood by those skilled in the art that the main wash apparatus may include any number of modular wash units U, for example, in order to accommodate the narrower body of the road washing vehicle, the main washing device may comprise a smaller number of modular washing units U arranged along the transverse direction TT', alternatively, for repeated cleaning of the road in a single trip, the main cleaning device may comprise a plurality of rows of modular cleaning units U arranged along the longitudinal direction LL', such as 6 modular cleaning units U arranged in a 2 x 3 matrix as shown in figure 7, in this case, the main washing device can perform multiple washing of the road in a single trip, thereby enabling more thorough removal of dirt, dust, etc. on the road.

Modular wash unit U is described in detail below with reference to fig. 4-6. As shown in fig. 4, the modular washing unit U generally includes a washing part 100 and a suction part 200 attached to a rear part of the washing part 100, wherein the washing part 100 is configured to wash a road with a high pressure water flow, and the suction part 200 is configured to suction sewage generated from washing the road. Specifically, the wash bowl 100 comprises a wash bowl frame 110 and a rotary wash assembly 120 attached to the wash bowl frame 110, wherein the wash bowl frame 110 is adapted to be suspended to the rear of a road wash vehicle, the rotary wash assembly 120 comprising a rotary joint 122 rotatably attached to the wash bowl frame 110, wherein the rotary joint 122 is adapted to rotate about a rotational axis XX ' extending in a vertical direction VV ', and the rotary wash assembly 120 further comprising a main spray bar 123 extending outwardly from the rotary joint 122 in a radial direction (i.e. a direction perpendicular to the rotational axis XX ' of the rotary joint 122) and a main spray head 124 attached to an end of the main spray bar 123, wherein the main spray head 124 is oriented vertically downwards so as to spray a high pressure water stream vertically downwards. The spin rinse assembly 120 also includes a motor (121), such as a hydraulic motor, an electric motor, or the like, for driving the rotary union 122 in rotation.

The basic composition of the main washing device of the washer according to the present invention has been described above, and the operation thereof is described below on this basis. In use, the main wash unit is suspended to the rear of the road wash vehicle so that the road therebelow can be washed as the road wash vehicle moves. In particular, since the main washing device has a modular configuration, the number and arrangement of the modular washing units U can be set according to, for example, the width of the road to be washed and/or the width of the road washing vehicle and/or the number of single-trip washes ordered. 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 may be provided along the transverse direction TT ', that is, the number of modular cleaning units U arranged along the transverse direction TT' may be set according to the width of the road to be cleaned and/or the width of the road cleaning vehicle, so that according to the present invention the main cleaning device of the cleaner may be freely matched to the existing road and the existing road cleaning vehicle; when multiple washing of a road is scheduled in a single trip, a plurality of rows of modular washing units U may be arranged along the longitudinal direction LL ', for example, when triple washing of a road is scheduled in a single trip, three rows (or three) of modular washing units U may be arranged along the longitudinal direction LL ', that is, the number of modular washing units U arranged along the longitudinal direction LL ' may be set according to a predetermined number of times of single trip washing. Therefore, according to the utility model discloses a main belt cleaning device of purger is applicable to the road of any width, the road cleaning vehicle of any width and is suitable for and carries out the washing of arbitrary number of times to the road, and this makes road cleaning equipment's configuration cost reduced by a wide margin, and the application is widened by a wide margin. Furthermore, the main washing apparatus drives the main spray bar 123 and thus the main spray head 124 to rotate using the independent motor 121, which enables the high-pressure water jet from the main spray head 124 to form a water ring wc (see fig. 1 and 4) on the road, and further, when the road washing vehicle moves, the water ring wc moves along with it to wash the road along the moving track of the water ring wc, so that the single main spray head 124 can wash a large area without orienting the main spray head 124 obliquely downward because the reaction force of the water jet is not used to drive the main spray head 124 to rotate. Further, since the main nozzles 124 are oriented vertically downward, not obliquely downward, the distance between the main nozzles 124 and the road is minimized, in other words, the stroke of the high-pressure water flow between the main nozzles 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 reaching the road, thereby enabling effective removal of dirt, dust, etc. adhering to the road. Of course, the main nozzle 124 may also be oriented obliquely (obliquely with respect to the vertical direction VV') downward so as to drive the main nozzle 124 to rotate by the reaction force of the injected water flow, so that the motor 121 is no longer required to be provided in order to reduce costs in terms of production, maintenance, and the like, in which case the main nozzle 124 may be a V-shaped nozzle that injects a water fan. Therefore, the main cleaning device of the cleaner according to the present invention not only has a wide application range as described above, but also can effectively clean the road.

Alternatively, as shown in fig. 4 to 6, each modular cleaning unit U includes at least two rotary cleaning assemblies 120 (arranged, for example, along the lateral direction TT'), wherein the at least two rotary cleaning assemblies 120 are configured such that the movement trajectories mt of the main nozzles 124 of any one rotary cleaning assembly 120 and the movement trajectories mt of the main nozzles 124 of the rotary cleaning assemblies 120 adjacent thereto do not cross each other (i.e., the movement trajectories mt of the main nozzles 124 of the adjacent rotary cleaning assemblies 120 do not cross each other).

According to the above technical solution, since the motion trajectories mt of the main nozzles 124 of the adjacent rotary cleaning assemblies 120 do not cross each other, the main nozzles 124 of the adjacent rotary cleaning assemblies 120 can be prevented from colliding when rotating, thereby ensuring the reliability and safety of the main cleaning apparatus when in use.

Additionally, it should be noted that although the figures illustrate each modular cleaning unit U as including two rotary cleaning assemblies 120, those skilled in the art will appreciate that the specific number of rotary cleaning assemblies 120 is not a limitation of the present invention. A modular wash unit U including any number of rotary wash assemblies 120 should be considered under the teachings of the present invention and is therefore included within the scope of the present invention.

Further optionally, as shown in fig. 1-3, the main cleaning apparatus comprises 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 motion trajectories mt of the main nozzles 124 of adjacent rotary cleaning assemblies 120 do not intersect.

According to the above technical solution, as described above, the main nozzles 124 of each adjacent spin cleaning assembly 120 in the main cleaning apparatus can be effectively prevented from colliding during rotation, thereby further ensuring the reliability and safety of the main cleaning apparatus during use.

Alternatively, as shown in fig. 3 and 6, the high-pressure water stream ejected by the main spray head 124 is a conical water stream wp. Therefore, the water flow can be further pressurized at the apex of the cone shape, i.e., the outlet of the main nozzle 124, so that it is possible to more effectively remove the dirt, dust, etc. attached to the road. Of course, those skilled in the art will appreciate that the main jet 124 may also jet a water flow wp of other shapes (e.g., cylindrical).

Optionally, as shown in fig. 2-3, 5-6, the modular washing unit U further includes a height restriction 130, the height restriction 130 including a cantilever 131 fixed to the washing section frame 110 and extending horizontally from the washing section frame 110 and a roller 132 rotatably disposed at an end of the cantilever 131, the roller 132 being configured to contact the road to define a distance between the main spray head 124 and the road. Therefore, the main spray head 124 can be restricted at a certain height by the elevation restricting portion 130, which makes it possible to protect the main spray head 124 from being collided with an obstacle on the road, thereby further improving the safety and reliability of the main washing device. Further optionally, each modular wash unit U comprises at least two elevations 130 extending forward (i.e. towards the road wash vehicle) from both sides in the transverse direction TT' of the wash section frame 110.

Optionally, each modular cleaning unit U comprises at least two rotary cleaning assemblies 120 arranged along the transverse direction TT', wherein each rotary cleaning assembly 120 and the height limiter 130 are configured such that water rings wc formed on the road by the high-pressure water streams ejected by the main nozzles 124 of adjacent rotary cleaning assemblies 120 are tangent to or partially overlap each other, as shown in fig. 4. According to the technical scheme, since the water rings wc formed on the road by the high-pressure water streams ejected by the main nozzles 124 of the adjacent rotary cleaning assemblies 120 are tangent to each other or partially overlap, no uncleaned area is left between the adjacent rotary cleaning assemblies 120 after each modular cleaning unit U cleans the road, which also avoids leaving a sewage band in the form of a zebra line as in the prior art.

Further alternatively, as shown in fig. 1-3, the main cleaning device of the cleaner according to the present invention comprises at least two modular cleaning units U arranged along the transverse direction TT', wherein the rotary cleaning assembly 120 and the height limiting portion 130 of each modular cleaning unit U are configured such that water rings wc formed on the road by the high-pressure water streams ejected by the main nozzles 124 of the adjacent rotary cleaning assemblies 120 are tangent to or partially overlap each other, as shown in fig. 1. According to this embodiment, as described above, after the main washing unit washes the road, no unwashed area is left between the adjacent rotary washing units 120, which avoids leaving a sewage band in the form of a zebra line as in the prior art.

Optionally, the distance between the main nozzles 124 and the road (i.e., the height of the main nozzles 124 with respect to the road) is between 30mm and 60mm, further optionally, not greater than 50 mm. When the distance between the main nozzle 124 and the road is within the above range, the main nozzle 124 can be effectively protected from being collided with obstacles on the road, while it can be ensured that the water stream ejected from the main nozzle 124 has a sufficiently high pressure to remove garbage, dust, etc. attached to the road when reaching the road.

Optionally, the washer according to the present invention further comprises a controller (not shown) configured to control each of the rotary wash assemblies 120 such that the main spray bars 123 of each adjacent rotary wash assembly 120 form a non-zero angle with each other, i.e. have different angular positions from each other. This is so that although the water rings wc formed on the road by the high-pressure water streams ejected by the main nozzles 124 of the respective adjacent spin cleaning assemblies 120 are tangent to each other or partially overlap, the high-pressure water streams ejected by the main nozzles 124 of the respective adjacent spin cleaning assemblies 120 do not pass through the overlapping portion of the water rings wc at the same time due to the presence of the above-mentioned non-zero angle, that is, the respective adjacent high-pressure water streams do not meet, which causes pressure loss since the respective adjacent high-pressure water streams do not impinge on each other, thereby further ensuring that the respective water streams reaching the road still have sufficient pressure to impinge on the road so as to effectively remove the dirt, dust, etc. attached to the road.

Alternatively, as shown in fig. 1 to 6, the suction part 200 is attached to the rear of the cleaning part frame 110, in other words, the suction part 200 is adjacent to but does not overlap the cleaning part 100 in the longitudinal direction LL'. This makes it possible that the suction part 200 sucks up the contaminated water without affecting the downward injection of the high pressure water flow into the cleaning part 100, and the contaminated water sucked up by the suction part 200 does not contaminate the cleaning part 100. On the contrary, if the suction part 200 overlaps the cleaning part 100, the polluted water sucked up by the suction part 200 may contaminate various parts of the cleaning part 100, impurities in the polluted water may enter a space between the cleaning part frame 110 and the rotary joint 122 to affect the rotation of the rotary joint 122, and the impurities may block the main spray head 124. Therefore, the reliability of the main cleaning device can be further ensured by the technical scheme.

Optionally, the washer according to the present disclosure further includes a hydraulic pump (not shown) in fluid communication with the respective main nozzles 124 through each main spray bar 123 so as to supply a high pressure water flow to the main nozzles 124 through each main spray bar 123.

The auxiliary washing device of the washer according to the present invention will be described in detail with reference to fig. 8 to 10. Referring to fig. 8-10, the auxiliary wash devices include auxiliary spray bars 300, 500 mounted adjacent to (adjacent to) the main wash device (particularly, fixed relative to the road wash vehicle) and sets of auxiliary spray heads 400, 600 disposed on the respective auxiliary spray bars 300, 500 and arranged along the direction of extension thereof, wherein the sets of auxiliary spray heads 400, 600 are configured to spray a fan-shaped stream of water. In particular, the hydraulic pump is in fluid communication with the respective set of auxiliary spray heads 400, 600 through each auxiliary spray bar 300, 500, so as to supply a high pressure water flow to the respective set of auxiliary spray heads 400, 600 through each auxiliary spray bar 300, 500.

Alternatively, as shown in fig. 8, the auxiliary spray bars 300, 500 include a first auxiliary spray bar 300, and the set of auxiliary spray heads 400, 600 includes a first set of auxiliary spray heads 400 evenly distributed on the first auxiliary spray bar 300, wherein the first auxiliary spray bar 300 is disposed rearward of the main washing device and extends in the width direction of the main washing device (i.e., the lateral direction TT' shown in the drawing), and the first set of auxiliary spray heads 400 are oriented obliquely forward and downward (specifically, obliquely with respect to the vertical direction). Further alternatively, as shown in fig. 8, the first auxiliary spray bar 300 extends across the entire width of the main wash.

According to the above technical scheme, because first group's auxiliary nozzle 400 is oriented forward and downward sloping, and is oriented towards the below of main belt cleaning device promptly, consequently sewage can be driven towards the below of suction portion 200 to the spun rivers of first group's auxiliary nozzle 400 to make suction portion 200 can more effectively with the sewage that produces after wasing the road siphoning away, in order to further improve according to the utility model discloses a road cleaning of purger effect.

Alternatively, as shown in fig. 9, auxiliary spray bars 300, 500 include a second auxiliary spray bar 500, and groups of auxiliary spray heads 400, 600 include a second group of auxiliary spray heads 600 uniformly distributed on second auxiliary spray bar 500, wherein second auxiliary spray bar 500 is disposed laterally rearward of the main washing device and extends obliquely with respect to the width direction of the main washing device (i.e., lateral direction TT' shown in the drawing), and second group of auxiliary spray heads 600 is oriented downward of the main washing device.

According to the above technical solution, since the second auxiliary spray bar 500 is located at the side rear of the main cleaning device, the water flow sprayed from the second group of auxiliary spray heads 600 can clean dead corners which can not be reached by the rotary cleaning assembly of the main cleaning device, such as the corner area between the curbs and the road. Therefore, according to the utility model discloses a purger not only can be through the main zone of main belt cleaning device washing road, can wash the dead angle through the supplementary shower nozzle 600 of second group moreover. That is to say, through this technical scheme, according to the utility model discloses a road can be washd more thoroughly, more comprehensively and no dead angle ground to the purger. In addition, since the second group of auxiliary spray heads 600 are oriented toward the lower side of the main washing device, the water flow sprayed from the second group of auxiliary spray heads 600 can also be sucked by the suction part 200, so that no sewage remains after washing.

Alternatively, as shown in fig. 10, the auxiliary spray bars 300, 500 are comprised of the first auxiliary spray bar 300 and the second auxiliary spray bar 500, and the set of auxiliary spray heads 400, 600 are comprised of the first set of auxiliary spray heads 400 and the second set of auxiliary spray heads 600. That is, the first auxiliary spray bar 300, the second auxiliary spray bar 500, the first group of auxiliary spray heads 400, and the second group of auxiliary spray heads 600 are disposed in the auxiliary washing device so as to clean the dead space while driving the sewage.

Alternatively, the operator may select one of the main washing device and the auxiliary washing device to operate through the controller as needed, or may select both to operate simultaneously. That is, the cleaning machine according to the present invention has a controllable user selection of multiple working modes, for example, when the road pollution degree is high, the main cleaning device and the auxiliary cleaning device can be selected to work simultaneously; when the road pollution degree is low, only the auxiliary cleaning device can be selected to work; when the road pollution degree is general, only the main cleaning device can be selected to work. Therefore, according to the utility model discloses a purger uses nimble convenience.

Preferred but non-limiting embodiments of the washer according to the invention are described in detail above with the aid of the accompanying drawings. Modifications and additions to the techniques and structures, without departing from the scope and spirit of the disclosure as set forth in the following claims, are deemed to be within the scope of the invention. Accordingly, such modifications and additions as may be contemplated under the teachings of the present invention are intended to be part of this disclosure. The scope of the present disclosure is defined by the following appended claims, and includes equivalents known at the time of filing this disclosure and equivalents not yet foreseen.

Claims (10)

1. Washer for road washing vehicles, characterized in that it comprises a main washing device and an auxiliary washing device, said main washing device comprising at least one modular washing unit (U), wherein said modular washing unit (U) comprises:

a washing section (100), the washing section (100) including a washing section frame (110) and a rotary washing assembly (120), the rotary washing assembly (120) including a rotary joint (122) rotatably attached to the washing section frame (110), a main spray bar (123) extending outward from the rotary joint (122), and a main spray head (124) attached to an end of the main spray bar (123), wherein the main spray head (124) is configured to spray a water stream downward to wash a road; and

a suction part (200) attached to a rear portion of the washing part frame (110), wherein the suction part (200) is configured to suction sewage generated by washing a road; and is

The auxiliary wash device includes an auxiliary spray bar (300, 500) fixedly mounted adjacent to the main wash device and a set of auxiliary spray heads (400, 600) disposed on the auxiliary spray bar (300, 500).

2. The washer of claim 1, wherein the main spray head (124) is configured to be oriented vertically downward to spray a water stream vertically downward, the spin wash assembly (120) further comprising a motor (121) for driving the spin joint (122) in rotation.

3. The washer of claim 1, wherein the main spray head (124) is configured to be oriented obliquely downward so as to spray a stream of water obliquely downward.

4. The washer of claim 1, further comprising a controller, wherein the controller is configured to cause one or both of the primary washing device and the auxiliary washing device to operate.

5. The washer according to claim 1, characterized in that the set of auxiliary spray heads (400, 600) is configured to spray a fan-shaped stream of water.

6. The washer of claim 1, wherein the auxiliary spray bars (300, 500) comprise a first auxiliary spray bar (300), the set of auxiliary spray heads (400, 600) comprising a first set of auxiliary spray heads (400) evenly distributed on the first auxiliary spray bar (300), wherein the first auxiliary spray bar (300) is disposed rearward of the main washer and extends along a transverse direction (TT'), the first set of auxiliary spray heads (400) being configured to be oriented forwardly and downwardly inclined.

7. The washer of claim 6 wherein the first auxiliary spray bar (300) extends across the entire width of the main wash device.

8. The washer according to one of claims 1 to 7, characterized in that the auxiliary spray bars (300, 500) comprise second auxiliary spray bars (500), the set of auxiliary spray heads (400, 600) comprising a second set of auxiliary spray heads (600) evenly distributed on the second auxiliary spray bars (500), wherein the second auxiliary spray bars (500) are arranged laterally behind the main washing device and extend obliquely with respect to the transverse direction (TT'), the second set of auxiliary spray heads (600) being arranged oriented towards the underside of the main washing device.

9. A road washing vehicle, characterized in that it comprises a washer according to any one of claims 1-8, wherein the washer is attached to the rear of the road washing vehicle.

10. Road washing vehicle according to claim 9, characterized in that the main washing device of the washer comprises a plurality of side-by-side modular washing units (U) so that the main washing device has substantially the same width as the road washing vehicle.

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