JP2015096694A - Road cleaning service car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road cleaning service car capable of efficiently and uniformly cleaning a road surface.SOLUTION: A road cleaning service car comprises a wash and suction attachment which includes spray nozzles 41 for spraying washing water toward a road surface and a suction port 42 for sucking and recovering filthy water from the road surface, a tank which stores the filthy water and washing water, a suction device and a pump. The wash and suction attachment consists of a plurality of spray and suction members arranged in parallel in the vehicle width direction. The spray and suction members are in the cylindrical shape and include the spray nozzles 41, the suction port 42 and a recess opening on the road surface side. The spray nozzles 41 consist of a rotational shaft 471 arranged in the center of the recess and the plurality of spray nozzles 41 oppositely arranged with the rotational shaft 471 held therebetween and rotating around the rotational shaft 471. The suction port 42 is formed over the whole periphery on the radial outer side of the spray nozzles 41.

Description

  The present invention relates to a road cleaning work vehicle that cleans and decontaminates a road surface by high-pressure washing and suction.

2. Description of the Related Art A cleaning work vehicle that performs cleaning by jetting high-pressure washing water onto an object is known.
Patent Document 1 discloses a water tank that stores cleaning water, a high-pressure water generator that pressurizes cleaning water from the water tank to generate high-pressure water, and an injection that injects high-pressure water from the high-pressure water generator. There is described a high-pressure washing vehicle including a hose reel on which a washing hose having a nozzle at its tip is wound so as to be wound and fed out.

  The high-pressure washing vehicle described in Patent Document 1 is mainly for performing a washing operation in the sewage pipe, and therefore does not include a configuration for collecting the sprayed washing water. Therefore, it was unsuitable as a cleaning car for cleaning the road surface.

  Patent Document 2 describes a cleaning vehicle including a cleaning unit that sprays water on an object to be cleaned and collects dust from the object to be cleaned together with water sprayed on the object to be cleaned. The cleaning unit described in Patent Document 2 is configured by arranging a plurality of watering nozzles linearly in the vehicle width direction. In the cleaning unit described in Patent Document 2, in order to clean the road surface evenly, it is necessary to arrange a large number of watering nozzles at narrow intervals, and there is a problem that the configuration becomes complicated. On the other hand, when the arrangement interval of the watering nozzles is widened and the number thereof is reduced, the area where the watering is not performed increases, and there is a problem that the road surface cannot be cleaned evenly.

In the patent document 3, the applicant of the present invention is configured to discharge sewage including an injection nozzle for injecting cleaning water, cleaning water injected from the injection nozzle, and earth and sand raised from the road surface by the injection of the cleaning water. A special pavement function recovery vehicle having a cleaning suction attachment including a suction port for suction and recovery is disclosed.
The cleaning and suction attachment described in Patent Document 3 includes a pair of front and rear frames arranged at intervals in the front-rear direction of the vehicle and extending in the width direction of the vehicle, and traveling wheels attached to the front frame and the rear frame, respectively. I have. An injection suction unit including an injection nozzle and a suction port is attached between the front and rear frames, and cleaning water is injected from the injection nozzle and dirty water is sucked and collected from the suction port.

The cleaning and suction attachment described in Patent Document 3 has a plurality of injection nozzles arranged in a straight line in the vehicle width direction as in Patent Document 2, and reduces the number of injection nozzles and cleans the road surface evenly. There was room for improvement.
In addition, the cleaning suction attachment described in Patent Document 3 has a configuration in which the front and rear frames are connected and fixed to each other on the upper side. Therefore, when the road surface is uneven, the cleaning suction attachment is the surface of the road. Can not follow the unevenness of. As a result, a gap is generated between the road surface and the injection nozzle and the suction port. When the gap becomes large, the cleaning ability may be deteriorated.

Japanese Patent Laid-Open No. 2003-319441 JP 2004-293131 A Japanese Patent No. 4146504

  The present invention has been made to solve the above-described problems, and provides a road cleaning work vehicle that can efficiently and evenly clean the road surface.

  The invention according to claim 1 includes an injection nozzle for injecting cleaning water toward the road surface, cleaning water injected from the injection nozzle, earth and sand, etc. that floats from the road surface by the injection of the cleaning water. A suction port for collecting and collecting sewage from the surface of the road, a tank for storing the sewage collected and sucked from the suction port, and a suction force to the suction port And a pump for generating an injection force at the injection nozzle, and the cleaning and suction attachment comprises a plurality of injection and suction members arranged in parallel in the vehicle width direction. The suction member has a cylindrical shape, and includes the injection nozzle, the suction port, and a recess having an opening on the road surface side. The injection nozzle includes a rotation shaft disposed at the center of the recess, and the rotation shaft. The present invention relates to a road cleaning work vehicle comprising a plurality of injection nozzles arranged opposite to each other and rotating around the rotation axis, wherein the suction port is formed on the outer periphery in the radial direction of the injection nozzle over the entire circumference. .

  The invention according to claim 2 relates to the road cleaning work vehicle according to claim 1, wherein the spray nozzle is configured to be rotatable around the rotation axis in accordance with the spray of cleaning water.

  A third aspect of the present invention relates to the road cleaning work vehicle according to the first or second aspect, further comprising a motor connected to the spray nozzle so as to be rotatable around the rotation axis.

  The invention according to claim 4 relates to the road cleaning work vehicle according to claim 3, wherein the motor is an electric motor and includes an inverter that controls rotation of the electric motor.

  The invention according to claim 5 is characterized in that the jet suction member is connected to another jet suction member adjacent to each other at an upper portion, and can be raised and lowered with the connection portion as a fulcrum. The present invention relates to a road cleaning work vehicle described in the above.

  The invention according to claim 6 is characterized in that the outer surface of the spray suction member is formed of a brush, and at least a part of the outer surface of the brush is covered with a rubber member. The road cleaning work vehicle according to any one of the above.

  The invention according to claim 7 relates to the road cleaning work vehicle according to any one of claims 1 to 6, wherein the washing suction attachment is configured to be slidable in a vehicle width direction.

  According to an eighth aspect of the present invention, the drive shafts of the suction device and the pump respectively extract rotational motion of the engine drive shaft with respect to the drive shaft of the engine for driving the wheels via the PTO shaft. The road cleaning work vehicle according to claim 1, wherein the road cleaning work vehicle is connected.

According to the first aspect of the present invention, the cleaning suction attachment includes a plurality of spray suction members arranged in parallel in the vehicle width direction, and the spray suction member has a cylindrical shape, and includes a spray nozzle, a suction port, and a road surface. The injection nozzle comprises a rotation shaft disposed in the center of the recess, and a plurality of injection nozzles that are disposed opposite to each other with the rotation shaft interposed therebetween and rotate around the rotation shaft. Since the suction port is formed on the outer periphery in the radial direction of the spray nozzle over the entire circumference, the road surface can be cleaned evenly.
Specifically, by rotating the injection nozzle, the cleaning water can be sprayed uniformly over a wide area, instead of spraying the cleaning water only partially on the road surface. Furthermore, the road surface can be more evenly cleaned by arranging a plurality of cylindrical jet suction members having such jet nozzles in parallel.
In addition, the sewage composed of the washing water jetted from the jet nozzle and the earth and sand floating from the road surface by the jet of the wash water flows radially outward due to the centrifugal force generated by the rotation of the jet nozzle, but the suction port jets By being formed over the entire circumference on the radially outer side of the nozzle, this sewage can be reliably sucked and collected at the suction port.

  According to the invention according to claim 2, when the washing water is jetted from the jet nozzle, the jet nozzle rotates with its momentum, and thereby the jet water is not jetted only partially on the road surface, Cleaning water can be sprayed evenly over a wide area.

  According to the invention according to claim 3, by providing the injection nozzle with a motor connected to the injection nozzle so as to be rotatable around the rotation axis, the rotation speed of the injection nozzle can be increased to achieve proper rotation. As a result, the amount of water used can be reduced, and the cleaning efficiency can be improved.

  According to the invention which concerns on Claim 4, the said motor is an electric motor, By providing the inverter which controls rotation of this electric motor, the rotational speed of an injection nozzle can be raised and it can be set as appropriate rotation, thereby The amount of water used can be reduced, and the cleaning efficiency can be improved.

  According to the fifth aspect of the present invention, the jet suction member is connected to another jet suction member adjacent to the upper portion, and can be undulated with the connecting portion as a fulcrum, whereby the road surface is uneven. However, since the jet suction member can follow the unevenness, the distance between the jet nozzle and the suction port and the road surface is not too far away depending on the place. Thereby, even when the road surface has irregularities, it can be reliably cleaned without unevenness.

  According to the invention of claim 6, the outer surface of the cylindrical jetting suction member is formed of a brush, and at least a part of the outer surface of the brush is covered with the rubber member, While taking in the dust from the outside to the inside of the jetting suction member from the brush portion, it is possible to prevent the dust taken in the inside from being held in the rubber portion and going out to the outside again. Thereby, dust can be collected with high efficiency.

  According to the seventh aspect of the present invention, the cleaning suction attachment is configured to be slidable in the vehicle width direction, so that even if the road width is wide, the entire road can be traveled once without reciprocating the road many times. It can be cleaned evenly.

  According to the eighth aspect of the present invention, the drive shafts of the suction device and the pump take out the rotational motion of the engine drive shaft with respect to the drive shaft of the engine for driving the wheels via the PTO shaft. By being connected, the suction device and the pump can be driven during traveling, and road cleaning is possible while traveling. Further, since it is not necessary to separately install a suction device and a pump drive source, space saving can be realized.

It is a top view of the road cleaning work vehicle concerning the present invention. It is a front view of the road cleaning work vehicle concerning the present invention. It is a side view of the road cleaning work vehicle concerning the present invention. It is a flow sheet which shows the whole road cleaning work vehicle composition concerning the present invention. It is detail drawing of the suction unit (1) part shown by the flow sheet of FIG. FIG. 5 is a detailed view of a tank (2) portion shown in the flow sheet of FIG. 4. FIG. 5 is a detailed view of a washing water recycling mechanism (3) portion shown in the flow sheet of FIG. 4. (A) Top view around cleaning suction attachment, (b) Front view around cleaning suction attachment. It is a fragmentary sectional view of Drawing 8 (b). It is a top view of a cleaning suction attachment. It is a front view of a cleaning suction attachment, (a) When a cleaning suction attachment is on a flat road, (b) It is a figure showing a case where a cleaning suction attachment is on a road with unevenness. It is sectional drawing for showing the structure of the injection suction member of 1st Embodiment. It is a perspective view of an injection suction member. It is sectional drawing for showing the structure of the injection suction member of 2nd Embodiment.

  Hereinafter, a road cleaning work vehicle according to the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a road cleaning work vehicle according to the present invention, FIG. 2 is a front view of the road cleaning work vehicle according to the present invention, and FIG. 3 is a side view of the road cleaning work vehicle according to the present invention.
The road cleaning work vehicle according to the present invention includes a suction unit (1) and a tank (2) mounted on a chassis, and a cleaning suction attachment (4) at a lower rear portion of the chassis. The cleaning suction attachment (4) can be moved up and down, and is positioned at the upper part while traveling without cleaning (reference numeral 4). During cleaning, the reference numeral (2) shown with a two-dot chain line in FIG. It is located at the bottom as shown by 4 ').
Preferably, the road cleaning work vehicle according to the present invention includes a cleaning water recycling mechanism (see FIG. 7).

  4 is a flow sheet showing the overall configuration of the road cleaning work vehicle according to the present invention, FIG. 5 is a detailed view of the suction unit (1) portion shown in the flow sheet of FIG. 4, and FIG. FIG. 7 is a detailed view of the tank (2) portion shown in the flow sheet of FIG. 4, and FIG. 7 is a detailed view of the wash water recycling mechanism (3) portion shown in the flow sheet of FIG.

The suction unit (1) includes a blower (11) that acts as a suction device for generating a suction force in a suction port (described later) provided in the cleaning suction attachment (4).
The blower (11) is an air-cooled (dry) roots blower, and the discharge port of the secondary catcher (12) is connected to the suction port side of the blower (11), and the discharge silencer is connected to the discharge port side of the blower (11). (13) is connected.
The secondary catcher (12) takes in the air in the sewage chamber sucked from the upper part of the sewage chamber (described later) of the tank (2) by the action of the blower (11), and the moisture contained in the air The air after the water is separated by the secondary catcher (12) is introduced into the suction port of the blower (11).
A vacuum gauge (14), a vacuum breaker (15), and a load release valve (16) are connected to a path connecting the blower (11) and the secondary catcher (12).

As described above, in the suction unit (1) used in the present invention, an air-cooled blower is used as a suction device for generating suction force in the suction port provided in the cleaning suction attachment (4).
As a result, a high vacuum pressure and a stable air volume can be secured, and a third catcher, a fourth catcher and cooling water are not required as in the case of using a wet blower. It is possible to reduce and increase the tank capacity.

The tank (2) is installed to store the cleaning water sprayed from the cleaning suction attachment (4) toward the road surface and the sewage collected and sucked from the suction port provided in the cleaning suction attachment (4). Yes.
The tank (2) includes a sewage chamber (21) for storing the sewage and a wash water chamber (22) for storing the rinsing water, and the two chambers are completely partitioned so that water cannot flow. It has been.

The sewage chamber (21) is disposed on the rear side of the vehicle, and a suction port (23) is provided at the upper front portion thereof, and a discharge port (24) is provided at the lower rear portion thereof.
The suction port (23) is connected to a path that leads to the secondary catcher (12) of the suction unit (1) described above, and the blower (11) is driven from the suction port to the inside of the sewage chamber (21). Air can be sucked into the sewage chamber to create a negative pressure.
The discharge port (24) can be opened and closed by a valve. By opening the valve, sand and silt accumulated in the sewage chamber (21) can be discharged to the outside.

The washing water chamber (22) in the tank (2) is disposed on the front side of the vehicle.
In the upper part of the washing water chamber (22), there is provided an inlet (221) for taking in water taken out from the sewage extraction passage (31) and purified by the washing water recycling mechanism (3). A strainer (222) is disposed at the inlet (221).
In addition, an extraction path (26) for taking out the cleaning water in the cleaning water chamber is connected to the cleaning water chamber (22).

The take-out path (26) is a path for supplying cleaning water in the cleaning water chamber (22) to an injection nozzle (described later) provided in the cleaning suction attachment (4), and a valve ( 261a) (261b), a strainer (262), a high-pressure water pump (263), and a pressure regulating valve (264) are attached.
During normal operation (during the road surface cleaning operation), the upper valve (261a) of the two valves is opened, and the lower valve (261b) is closed. This is because the silt contained in the washing water in the washing water chamber (22) accumulates at the bottom, and the washing water with a low silt content can be taken out by taking out the washing water from the upper valve (261a). Because. The lower valve (261b) is opened when the silt accumulated in the cleaning water chamber (22) is taken out after the road surface cleaning operation is completed.

  As shown in FIG. 7, the cleaning water recycling mechanism (3) is provided for circulation in the sewage extraction path (31) for taking out sewage from the sewage chamber (21) and in the middle of the sewage extraction path (31) Foreign matter was removed by the foreign matter removing device (33) and the foreign matter removing device (33) for removing foreign matter such as earth and sand contained in the sewage taken out from the sewage extraction passage (31) by the pump (32). A circulation path (34) is provided for sending the later sewage as washing water to the washing water chamber (22).

8A is a plan view of the cleaning suction attachment fixture, FIG. 8B is a front view of the cleaning suction attachment fixture, and FIG. 9 is a partial cross-sectional view of FIG. In FIG. 8A, the illustration of the cleaning suction attachment is omitted to clarify the structure of the fixture.
As shown in FIG. 8B, the cleaning suction attachment (4) is fixed to the lower part of the cleaning suction attachment fixture (8). The cleaning suction attachment fixture (8) is slidable in the vehicle width direction with respect to the fixed portion (87) connected to the other end of the arm (84) having one end attached to the chassis side, and the fixed portion (87). And a movable portion (86) provided in the. The movable part (86) includes a plurality of wheels (85) arranged in parallel in the vehicle width direction before and after the movable part (86). By operating the arm (84), the cleaning / suction attachment (4) and the cleaning / suction attachment attachment (8) can be moved in the vertical direction, as indicated by a two-dot chain line in FIG.

The fixed portion (87) includes a hydraulic motor (81) and a gear (82) fixed to the hydraulic motor (81). On the other hand, a rack gear (83) is fixed to the movable portion (86), and when the gear (82) rotates, the rack gear (83) slides in the vehicle width direction. Therefore, by driving the hydraulic motor (81), the movable part (86) to which the rack gear (83) is fixed can be slid in the vehicle width direction.
As a result, it is possible to clean up to the corners of the road shoulders, and it is possible to clean the entire road evenly without traveling to and from the road many times even when the road is wide.

FIG. 10 is a plan view of the cleaning suction attachment. FIG. 11 is a front view of the cleaning / suction attachment. FIG. 11 (a) shows a case where the cleaning / suction attachment is on a flat road, and FIG. 11 (b) shows a case where the cleaning / suction attachment is on an uneven road. FIG. 12 is a cross-sectional view for illustrating the configuration of the ejection suction member of the first embodiment.
The cleaning suction attachment (4) includes a plurality of cylindrical spray suction members (43) arranged in parallel, each having a spray nozzle (41) and a suction port (42). In the drawing, four jetting suction members (43) are arranged in parallel, but the number of jetting suction members (43) can be determined as appropriate.

As shown in FIG. 12, each of the injection suction members (43) includes a recess (47) that is open on the road surface side.
The spray nozzle (41) is disposed opposite the rotation shaft (471) disposed at the center of the recess (47) with the rotation shaft (471) interposed therebetween, and rotates around the rotation shaft (471) as the cleaning water is sprayed. It consists of a plurality of rotating injection nozzles. That is, the spray nozzle (41) and another spray nozzle arranged to face each other are connected to each other via the washing water path (45) to form the spray nozzle assembly (411). The washing water path (45) is connected to a washing water hose (6) for supplying washing water, and the high-pressure washing water passes from the tank (22) through the washing water hose (6) and the washing water path (45). Injected from the injection nozzle (41) toward the road surface.
The injection nozzle assembly (411) is rotatably provided around the rotation axis (471) of the injection suction member (43). When washing water is jetted from both jet nozzles, the jet nozzle assembly (411) rotates around the rotation axis (471) by the jet force. Accordingly, the cleaning water can be sprayed uniformly over a wide area, instead of spraying the cleaning water only to a part thereof. Therefore, the road surface can be cleaned evenly.

The suction port (42) is provided over the entire circumference on the radially outer side of the injection nozzle (41).
The jet suction member (43) includes an inner member (48) that forms a recess (47) and an outer member (49) provided outside the inner member (48). The inner member (48) and the outer member (49) both have a cylindrical shape with the lower part (the right side in FIG. 12) open. The inner member (48) and the outer member (49) allow the suction port (42). ) And an intake air path (481). The intake air path (481) is connected to the suction hose (5), and by the action of the blower (11), the wash water jetted from the jet nozzle (41) and the earth and sand that floats from the road surface by the jet of the wash water The sewage consisting of the above is sucked and collected from the suction port (42).
Since the spray nozzle (41) sprays wash water while rotating, the wash water and sewage are directed radially outward by the centrifugal force. Since the suction port (42) is provided over the entire circumference on the outer side in the radial direction of the injection nozzle (41), the sewage can be efficiently and reliably sucked and collected.

Next, only a different point from 1st Embodiment is demonstrated about 2nd Embodiment of a jet suction member (43). FIG. 14 is a cross-sectional view for illustrating the configuration of the ejection suction member of the second embodiment.
In the second embodiment, the motor (90) is connected to the injection nozzle (41) so that the injection nozzle (41) can rotate about the rotation axis (471).
A spur gear (91) is attached to the shaft (94) of the motor (90). The high pressure washing water inlet (61) is connected to the injection nozzle (41) through a swivel joint (93) and a shaft (95), and a spur gear (92) is attached to the shaft (95). . The spur gear (91) meshes with the spur gear (92), and when the motor (90) rotates, the injection nozzle (41) rotates about the rotation shaft (471).

  By providing the motor (90), it is possible to increase the rotation speed of the spray nozzle (41) to achieve proper rotation, thereby reducing the amount of water used and improving the cleaning efficiency.

  An electric motor and a hydraulic motor can be used as the motor (90). When using an electric motor, it is preferable to provide an inverter (not shown) for controlling the rotation of the electric motor. Thereby, rotation of an electric motor can be controlled and it can be set as an appropriate rotational speed.

FIG. 11 is a front view of the cleaning suction attachment, showing (a) when the cleaning suction attachment is on a flat road and (b) when the cleaning suction attachment is on an uneven road.
The jet suction member (43) is connected to another adjacent jet suction member at the upper portion, and is formed to be able to undulate with this connection portion as a fulcrum. Specifically, the flanges (44) extending outward from the outer member (49) of the adjacent jetting suction member (43) are fixed to each other by the connecting member (46). As a result, the adjacent jetting suction members (43) can be raised and lowered with the connecting portion as a fulcrum, in other words, can rotate around the central axis (b) passing through the connecting portion, as shown in FIG. 11 (b). Thus, even on a road with unevenness, the jet suction member (43) can follow the unevenness. Therefore, the distance between the spray nozzle (41) and the suction port (42) and the road surface is not excessively separated depending on the place, and a constant distance can be maintained. Therefore, even roads with unevenness can be cleaned evenly.

FIG. 13 is a perspective view of the ejection suction member.
The cylindrical injection suction member (43) preferably has an outer surface formed of a brush (491), and at least a part of the outer surface of the brush (491) is covered with a rubber member (492). . As a result, dust on the road surface is taken in from the brush (491) from the outside to the inside of the jetting suction member (43), and the dust and moisture taken in the inside are held by the rubber member (492) and go out to the outside again. You can prevent going. Moreover, by using a brush, it is possible to cope with fine irregularities on the road surface and to send air necessary for suction. Thereby, dust can be collected with high efficiency.
The rubber member (492) is preferably provided on the rear side of the vehicle. As the vehicle travels, the dust moves relatively to the rear side of the vehicle, but the rubber member (492) is provided on the rear side of the vehicle, so that the dust moves relatively to the rear side of the vehicle. It is possible to prevent the rubber member (492) from going outside.

Reference is again made to FIG.
The drive shafts of the blower (11) and the pump (263) respectively take out the rotational motion of the engine drive shaft (72) with respect to the engine drive shaft (72) for driving the wheels via the PTO shaft (73). It is preferable that it is connected to.
The drive shafts of the blower (11) and the pump (263) are connected to the PTO shaft (73) via a belt. The PTO shaft (73) is also connected to the engine drive shaft (72) via a belt. In the illustrated example, the engine drive shaft (72) is connected to the PTO shaft (73) via the transmission gear (71) so that the rotational motion of the shaft is interlocked. Thereby, a blower (11) and a pump (263) can also be driven by driving an engine. Therefore, the blower (11) and the pump (263) can be driven during traveling. Further, since it is not necessary to mount drive sources for the blower (11) and the pump (263), space saving can be realized.

  INDUSTRIAL APPLICABILITY The present invention is suitably used as a road cleaning work vehicle that cleans a road by removing foreign matters such as earth and sand on the road. As a result, it can also be used for road decontamination.

1 Suction Device 11 Blower 2 (22) Tank 263 Pump (High Pressure Water Pump)
4 Washing suction attachment 41 Spray nozzle 42 Suction port 43 Spray suction member 471 Rotating shaft 491 Brush 492 Rubber member 5 Suction hose 6 Washing water hose 72 Engine drive shaft 73 PTO shaft 90 Motor

The invention according to claim 1 includes an injection nozzle for injecting cleaning water toward the road surface, cleaning water injected from the injection nozzle, earth and sand, etc. that floats from the road surface by the injection of the cleaning water. A suction port for collecting and collecting sewage from the surface of the road, a tank for storing the sewage collected and sucked from the suction port, and a suction force to the suction port And a pump for generating an injection force at the injection nozzle, and the cleaning and suction attachment comprises a plurality of injection and suction members arranged in parallel in the vehicle width direction. suction member is cylindrical, and a recess in which the injection nozzle and the suction port and the road surface side is open, and the injection suction member, the other adjacent ejection suction member and the upper smell Are connected, a liftable the connection portion as a fulcrum, the injection nozzle is rotated a rotation shaft disposed in the recess center, disposed opposite to the rotary axis across the rotary shaft The present invention relates to a road cleaning work vehicle comprising a plurality of injection nozzles, wherein the suction port is formed on the outer periphery in the radial direction of the injection nozzle over the entire circumference.
The invention according to claim 2 includes an injection nozzle for injecting cleaning water toward the road surface, cleaning water injected from the injection nozzle, earth and sand, etc. that floats from the road surface by the injection of the cleaning water. A suction port for collecting and collecting sewage from the surface of the road, a tank for storing the sewage collected and sucked from the suction port, and a suction force to the suction port And a pump for generating an injection force at the injection nozzle, and the cleaning and suction attachment comprises a plurality of injection and suction members arranged in parallel in the vehicle width direction. The suction member has a cylindrical shape, and includes the spray nozzle, the suction port, and a recess having an opening on the road surface side, and an outer surface of the spray suction member is formed of a brush. At least a part of the side surface is covered with a rubber member, and the spray nozzle is arranged to face a rotation shaft disposed at the center of the recess and to be opposed to the rotation shaft so as to rotate around the rotation shaft. The present invention relates to a road cleaning work vehicle comprising an injection nozzle, wherein the suction port is formed on the outer periphery in the radial direction of the injection nozzle over the entire circumference.

A third aspect of the present invention relates to the road cleaning work vehicle according to the first or second aspect, wherein the spray nozzle is configured to be rotatable around the rotation axis in accordance with the spray of cleaning water.

The invention according to claim 4 relates to the road cleaning work vehicle according to any one of claims 1 to 3, further comprising a motor connected to the spray nozzle so that the spray nozzle is rotatable about the rotation axis. .

The invention according to claim 5 relates to the road cleaning work vehicle according to claim 4 , wherein the motor is an electric motor and includes an inverter that controls rotation of the electric motor.

Invention, the ejection suction member is connected at the other adjacent ejection suction member and the top, the road according to claim 2, characterized in that the liftable the connection portion as a fulcrum according to claim 6 It relates to cleaning vehicles.

The invention according to claim 7, wherein which the outer surface of the injection suction member is formed by a brush, according to claim 1, wherein at least a portion of the outer surface of the brush, characterized in that it is coated with a rubber member It relates to road cleaning work vehicles.

The invention according to claim 8 relates to the road cleaning work vehicle according to any one of claims 1 to 7 , wherein the cleaning suction attachment is configured to be slidable in a vehicle width direction.

According to a ninth aspect of the present invention, the drive shafts of the suction device and the pump respectively extract rotational motion of the engine drive shaft with respect to the drive shaft of the engine for driving the wheels via the PTO shaft. on road cleaning vehicle according to any one of claims 1 to 8, characterized in that it is connected.

According to the first aspect of the present invention, the cleaning suction attachment includes a plurality of spray suction members arranged in parallel in the vehicle width direction, and the spray suction member has a cylindrical shape, and includes a spray nozzle, a suction port, and a road surface. And the ejection suction member is connected to another adjacent ejection suction member at an upper portion, and can be raised and lowered with the connection portion as a fulcrum. A rotation shaft disposed in the center and a plurality of injection nozzles arranged opposite to each other with the rotation shaft interposed therebetween and rotating around the rotation shaft, and the suction port extends over the entire circumference radially outward of the injection nozzle By being formed, the road surface can be cleaned evenly. In addition, even when the road surface is uneven, it can be reliably cleaned without unevenness.
Specifically, by rotating the injection nozzle, the cleaning water can be sprayed uniformly over a wide area, instead of spraying the cleaning water only partially on the road surface. Furthermore, the road surface can be more evenly cleaned by arranging a plurality of cylindrical jet suction members having such jet nozzles in parallel.
In addition, the sewage composed of the washing water jetted from the jet nozzle and the earth and sand floating from the road surface by the jet of the wash water flows radially outward due to the centrifugal force generated by the rotation of the jet nozzle, but the suction port jets By being formed over the entire circumference on the radially outer side of the nozzle, this sewage can be reliably sucked and collected at the suction port.
In addition, the jet suction member is connected to another jet suction member adjacent to the upper part, and can be undulated with the connecting portion as a fulcrum, so that even if the road surface has bumps, the jet suction member Therefore, the distance between the spray nozzle and the suction port and the road surface is not excessively separated depending on the location. Thereby, even when the road surface has irregularities, it can be reliably cleaned without unevenness.
According to the invention which concerns on Claim 2, a washing | cleaning suction attachment consists of several injection suction members arranged in parallel in the vehicle width direction, The said injection suction member is cylindrical shape, Comprising: The injection nozzle, the suction port, and the road surface A recess that is open on the side, an outer surface of the spray suction member is formed of a brush, and at least a part of the outer surface of the brush is covered with a rubber member, and the spray nozzle includes the recess A rotation shaft disposed in the center and a plurality of injection nozzles arranged opposite to each other with the rotation shaft interposed therebetween and rotating around the rotation shaft, and the suction port extends over the entire circumference radially outward of the injection nozzle By being formed, the road surface can be cleaned evenly. Moreover, dust can be collected with high efficiency.
Specifically, by rotating the injection nozzle, the cleaning water can be sprayed uniformly over a wide area, instead of spraying the cleaning water only partially on the road surface. Furthermore, the road surface can be more evenly cleaned by arranging a plurality of cylindrical jet suction members having such jet nozzles in parallel.
In addition, the sewage composed of the washing water jetted from the jet nozzle and the earth and sand floating from the road surface by the jet of the wash water flows radially outward due to the centrifugal force generated by the rotation of the jet nozzle, but the suction port jets By being formed over the entire circumference on the radially outer side of the nozzle, this sewage can be reliably sucked and collected at the suction port.
Further, the outer surface of the cylindrical jetting suction member is formed of a brush, and at least a part of the outer side surface of the brush is covered with a rubber member, so that dust on the road surface can be removed from the outside of the jetting suction member. While taking in from a brush part inside, it can hold | maintain the dust taken in in a rubber | gum part and can prevent coming out outside again. Thereby, dust can be collected with high efficiency.

According to the invention according to claim 3, when the cleaning water is jetted from the jet nozzle, the jet nozzle rotates with its momentum, thereby not spraying the wash water only partially on the road surface, Cleaning water can be sprayed evenly over a wide area.

According to the invention according to claim 4 , by providing the spray nozzle with a motor that is connected to the spray nozzle so as to be rotatable around the rotation axis, the rotation speed of the spray nozzle can be increased to achieve proper rotation. As a result, the amount of water used can be reduced, and the cleaning efficiency can be improved.

According to the invention which concerns on Claim 5 , the said motor is an electric motor, By providing the inverter which controls rotation of this electric motor, the rotational speed of an injection nozzle can be raised and it can be set as appropriate rotation. The amount of water used can be reduced, and the cleaning efficiency can be improved.

According to the invention of claim 6 , the jet suction member is connected to another jet suction member adjacent to the upper portion, and can be undulated with the connecting portion as a fulcrum, whereby the road surface is uneven. However, since the jet suction member can follow the unevenness, the distance between the jet nozzle and the suction port and the road surface is not too far away depending on the place. Thereby, even when the road surface has irregularities, it can be reliably cleaned without unevenness.

According to the seventh aspect of the present invention, the outer surface of the cylindrical jet suction member is formed of a brush, and at least a part of the outer surface of the brush is covered with a rubber member. While taking in the dust from the outside to the inside of the jetting suction member from the brush portion, it is possible to prevent the dust taken in the inside from being held in the rubber portion and going out to the outside again. Thereby, dust can be collected with high efficiency.

According to the eighth aspect of the present invention, since the cleaning suction attachment is configured to be slidable in the vehicle width direction, even if the road width is wide, the entire road can be traveled once without reciprocating the road many times. It can be cleaned evenly.

According to the ninth aspect of the present invention, the drive shafts of the suction device and the pump each take out rotational motion of the engine drive shaft with respect to the drive shaft of the engine for driving the wheels via the PTO shaft. By being connected, the suction device and the pump can be driven during traveling, and road cleaning is possible while traveling. Further, since it is not necessary to separately install a suction device and a pump drive source, space saving can be realized.

Claims (8)

Dirty water composed of an injection nozzle for injecting cleaning water toward the road surface, cleaning water injected from the injection nozzle, and earth and sand that floats from the road surface by the injection of the cleaning water from above the road surface A cleaning suction attachment comprising: a suction port for sucking and collecting;
A tank for storing the sewage collected by suction from the suction port and the washing water;
A suction device for generating a suction force at the suction port;
A pump for generating an injection force in the injection nozzle;
The cleaning suction attachment includes a plurality of spray suction members arranged in parallel in the vehicle width direction, and the spray suction member has a cylindrical shape, and includes the spray nozzle, the suction port, and a recess opened on the road surface side. And
The injection nozzle is composed of a rotation shaft disposed in the center of the concave portion and a plurality of injection nozzles that are arranged to face each other with the rotation shaft interposed therebetween and rotate around the rotation shaft.
The road cleaning work vehicle, wherein the suction port is formed on the outer periphery in the radial direction of the injection nozzle over the entire circumference.   2. The road cleaning work vehicle according to claim 1, wherein the spray nozzle is configured to be rotatable around the rotation shaft in accordance with the spray of cleaning water.   The road cleaning work vehicle according to claim 1 or 2, further comprising a motor connected to the spray nozzle so that the spray nozzle is rotatable about the rotation axis. The motor is an electric motor;
The road cleaning work vehicle according to claim 3, further comprising an inverter that controls rotation of the electric motor.   5. The road cleaning work vehicle according to claim 1, wherein the jet suction member is connected to another jet suction member adjacent to the jet suction member at an upper portion, and can be raised and lowered with the connection portion as a fulcrum. .   The road cleaning work according to any one of claims 1 to 5, wherein an outer surface of the spray suction member is formed of a brush, and at least a part of the outer surface of the brush is covered with a rubber member. car.   The road cleaning work vehicle according to any one of claims 1 to 6, wherein the cleaning suction attachment is configured to be slidable in a vehicle width direction.   The drive shafts of the suction device and the pump are each connected via a PTO shaft so as to extract rotational motion of the engine drive shaft with respect to the engine drive shaft for driving wheels. The road cleaning work vehicle according to any one of claims 1 to 7.