Road cleaning device, road cleaning vehicle using the same, and road cleaning method

Abstract

To provide a road surface cleaning device mounted onto a plow of a humid salt spraying vehicle or an antifreezing agent spray vehicle, capable of efficiently cleaning road trash and the like.SOLUTION: A road surface cleaning device 1 comprises: spray bars 50a, 50b, and 50c each removably attached to a center plow 2, a right plow 3, and a left plow 4; and water supply lines that feed water supply from an outside feed water pump to the spray bars 50a, 50b, and 50c and removably mounted to each plow. Each spray bar includes a water flow pipe 51 and multiple spray nozzles 52 arranged in the water flow pipe 51. The road surface cleaning device 1 also comprises angular adjustment means for adjusting an injection angle of the spray nozzle 52.SELECTED DRAWING: Figure 4A

Description

[Technical field]

[0001] The present invention relates to a road cleaning device that is attached to a plow of a wet salt spreader, an antifreeze spreader, or the like, and to a road cleaning vehicle and a road cleaning method using the same. [Background technology]

[0002] In order to effectively utilize wet salt spreader trucks and antifreeze spreader trucks outside of snowy and icy seasons, it is useful to attach water injection nozzles to the plows of wet salt spreader trucks and antifreeze spreader trucks, etc., and use water injection to clean up garbage, soil, fallen leaves, branches, etc. (hereinafter referred to as "garbage, etc.") after accidents or natural disasters.

[0003] Patent document 1 describes a road cleaning vehicle in which a water tank and a water supply pump are provided on a vehicle having a plow, a water pipe extending in the left-right direction is attached to the front of the plow, and multiple water injection nozzles are provided on the water pipe at predetermined intervals, and by operating the water supply pump, water from the water tank can be sprayed from the water injection nozzles in front of the plow. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] FIG. 12 Summary of the Invention [Problem to be solved by the invention]

[0005] Patent Document 1 merely describes attaching a water injection nozzle to the front of a plow, and it is unclear whether this can efficiently clean up dirt and the like.

[0006] In recent years, there have been many natural disasters, such as heavy rains and typhoons, and after such natural disasters, garbage and other debris are strewn on the roads. For example, highways and other roads are closed during such natural disasters, but after natural disasters, the roads must be efficiently cleaned up and removed in order to reopen as quickly as possible.

[0007] Therefore, an object of the present invention is to provide a road surface cleaning device that is attached to a plow of a wet salt spreader, an antifreeze spreader, etc., and that is capable of efficiently cleaning up garbage and the like from the road. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention has the following features: The present invention is a road surface cleaning device including a spray bar removably attached to each of a center plow, a right plow, and a left plow, and a water supply channel removably attached to each plow for delivering water from an external water supply pump to the spray bar.

[0009] Preferably, each spray bar includes a water conduit and a plurality of spray nozzles disposed in the water conduit.

[0010] Preferably, the road surface cleaning device further comprises an angle adjustment means for adjusting the spray angle of the spray nozzle.

[0011] Preferably, the angle adjustment means includes a plow-side fitting that is detachably attached to the lower part of the plow, and a water pipe-side fitting that is attached to the water pipe.

[0012] Preferably, the angle between the plow side fitting and the water pipe side fitting is adjustable.

[0013] Preferably, the angle between the spray direction of the spray nozzle of the spray bar and the road surface is adjustable between 20 degrees and 50 degrees.

[0014] Preferably, the height of the tip of the spray nozzle of the spray bar from the road surface is between 200 mm and 500 mm.

[0015] Preferably, the spray nozzles of the spray bar are arranged at intervals of 80 mm to 150 mm.

[0016] Preferably, the spacing between adjacent spray nozzles of the spray bars arranged on the right and / or left plow is smaller than the spacing between adjacent spray nozzles of the spray bars arranged on the centre plow.

[0017] Preferably, 78 to 157 liters of water are sprayed from the spray bar per minute at a pressure of 0.3 to 0.5 MPa.

[0018] Preferably, The water supply passage includes a branch pipe that branches in three directions and is detachably attached to the center plow, and hoses that extend from the branch pipe to the center plow, the right plow, and the left plow. The hoses are connected to the spray bar. For example, the hose includes a first hose and a second hose. The first hose is a hose that is provided from the branch pipe toward the center plow, the right plow, and the left plow. The water supply line includes an elbow connected to each of the first hoses and removably attached to the top of each plow. The second hose is a hose connected to each elbow.

[0019] Preferably, spray bars are attached to the front sides of the center plow, right plow and left plow.

[0020] Preferably, spray bars are mounted behind the center plow, the right plow and the left plow.

[0021] The present invention is a road sweeping apparatus that includes a spray bar removably attached to the underside of a plow, and a water supply line removably attached to each plow for delivering water from an external water pump to the spray bar.

[0022] The present invention is a road cleaning device comprising a spray bar removably attached to a plow, the spray bar including a water pipe and a plurality of spray nozzles arranged in the water pipe, the road cleaning device further comprising an angle adjustment means for adjusting the spray angle of the spray nozzle.

[0023] The present invention relates to a road sweeper in which the above-mentioned road cleaning device is attached to a chemical spraying vehicle having a plow.

[0024] The present invention is a road surface cleaning method for cleaning a road surface using the above road surface cleaning device. Effect of the Invention

[0025] According to the present invention, spray bars are attached to the center plow, right plow, and left plow, and water is sprayed from the spray bars. In the conventional road cleaning device described in Patent Document 1, the spray bar is simply attached to a plow that does not have the function of folding into three, but in the present invention, a spray bar is attached to each of the three plows in the road cleaning vehicle.

[0026] By adjusting the jetting angle of the jet nozzle with the angle adjusting means, it becomes possible to jet water at an appropriate jetting angle according to the type of garbage, such as soil and sand, fallen leaves, etc., so that garbage, etc. on the road can be cleaned efficiently.

[0027] For example, for heavy debris such as soil and sand, it is effective to increase the jetting angle, whereas for light debris such as fallen leaves, it is effective to decrease the jetting angle.

[0028] By making the spray angle adjustable between 20 degrees and 50 degrees, the angle can be adjusted according to the type of dirt, etc., enabling efficient cleaning.

[0029] By setting the height of the spray nozzle to anywhere between 200mm and 500mm, the water spray range can be expanded while preventing the pressure of the sprayed water from becoming too weak, allowing water to be sprayed onto the road surface, enabling efficient cleaning.

[0030] By arranging the jet nozzles at intervals between 80 mm and 150 mm, the water jetting ranges from adjacent jet nozzles can be appropriately overlapped, eliminating any uncleaned areas and enabling efficient cleaning.

[0031] By making the spacing between adjacent spray nozzles of the spray bars on the right and / or left plow narrower than the spacing between adjacent spray nozzles of the spray bar on the center plow, the amount of water and lap width of the right and / or left plow sections can be increased in areas where debris swept up during cleaning tends to accumulate, thereby enabling efficient cleaning.

[0032] The spray bar sprays 78 to 157 liters of water per minute at a pressure of either 0.3 to 0.5 MPa, allowing for efficient cleaning at the appropriate spray pressure.

[0033] By using a branch pipe, a first hose, an L-shaped pipe, and a second hose as the water supply passage, it becomes possible to detachably attach the spray bar to the plow with a simple structure.

[0034] By attaching a spray bar to the rear of the plow, it is possible to water the area after removing snow, soil, etc.

[0035] A road sweeper using the road cleaning device of the present invention is a vehicle that is reused as a pesticide sprayer vehicle used in the snowy and icy season during seasons when it is not in use, and the pesticide sprayer can be used effectively even outside the snowy and icy season.

[0036] By using the road surface cleaning method using the road surface cleaning apparatus of the present invention, efficient cleaning of the road surface is possible.

[0037] These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0038] [Figure 1] Fig. 1 is a plan view of a road surface cleaning device 1 according to an embodiment of the present invention. As shown in Fig. 4, the spray bars 50a, 50b, and 50c are attached to the lower part of each plow and cannot be seen in a plan view, but for ease of understanding, Fig. 1 illustrates the spray bars 50a, 50b, and 50c in a visible manner without illustrating the lower part of each plow. In Fig. 1, the hoses to each plow are illustrated by dashed lines. [Diagram 2] Fig. 2 is a front view of the road surface cleaning apparatus 1. In Fig. 2, in order to make the drawing easier to see, the metal fittings for attaching the spray bars 50a, 50b, and 50c to the respective plows are not shown. [Diagram 3] FIG. 3 is a plan view of the branch pipe 10. As shown in FIG. [Figure 4A] Fig. 4A is a right side view of the centre plow 2 of the road surface cleaning apparatus 1. For example, the angle shown in Fig. 4A may be used when removing soil and sand. [Figure 4B] FIG. 4B is a right side view of the center plow 2 of the road surface cleaning apparatus 1. For example, the angle shown in FIG. 4B may be used when removing fallen leaves. [Figure 4C] FIG. 4C shows a plow side fitting 20 to be attached to a plow, where (a) is a plan view and (b) is a front view. [Figure 4D] FIG. 4D is a diagram showing the water-pipe side fitting 30 attached to the water pipe 51, illustrating how the angle is adjusted. [Figure 4E] FIG. 4E is a diagram showing a branch pipe fitting 13 for attaching a branch pipe 10, and shows how the branch pipe fitting 13 is attached to a part of a center plow and the branch pipe 10 is fixed with a U-shaped fitting attached to the branch pipe fitting 13. [Figure 4F]FIG. 4F is a diagram showing an L-shaped pipe fitting 12 for attaching an L-shaped pipe 10b and a retaining plate attached thereto. [Figure 5A] Fig. 5A is a plan view of the road sweeper 1 when the plow angle is changed. For example, in the state of Fig. 5A, garbage and the like is removed to the left in the vehicle travel direction. [Figure 5B] Fig. 5B is a plan view of the road sweeper 1 when the plow angle is changed. For example, in the state of Fig. 5B, garbage and the like are removed to the right in the vehicle travel direction. [Figure 6] FIG. 6 is a plan view of a salt spreader 40 having a plow 42 . [Figure 7] FIG. 7 is a front view of a salt spreader 40 having a plow 42 . [Figure 8] FIG. 8 is a right side view of the centre plow 2 in the road surface cleaning device 1 according to another embodiment of the present invention. [Figure 9] FIG. 9 is a right side view of the centre plow 2 in the road surface cleaning device 1 according to another embodiment of the present invention. [Figure 10] FIG. 10 is a side view of the right plow 3 or the left plow 4 in a road surface cleaning apparatus 1 according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] A road surface cleaning device 1 according to an embodiment of the present invention includes spray bars 50a, 50b, and 50c that are detachably attached to a plow 42 of a wet salt spreader 40 as shown in Figures 6 and 7, a water supply line that sends water from a water pump (not shown) to the spray bars 50a, 50b, and 50c and is detachably attached to the plow 42, and an angle adjustment means that adjusts the angle of the injection nozzle 52 of the spray bars 50a, 50b, and 50c. Note that the vehicle to which the road surface cleaning device 1 is attached may be an antifreeze liquid spreader other than the wet salt spreader 40, or may be any other chemical spreader as long as it has a plow.

[0040] In this embodiment, the water supply passage is composed of a branch pipe 10, a first hose 10a, an L-shaped pipe 10b, and a second hose 10c, but this is merely one example, and the path for supplying water from the water pump to each spray bar is not particularly limited.

[0041] In this embodiment, the angle adjustment means is composed of a plow side fitting 20 and a water pipe side fitting 30, but this is merely one example and any mechanism that adjusts the angle of the injection nozzle 52 may be used.

[0042] The wet salt spreader 40 shown in Figures 6 and 7 is a wet salt spreader with a plow that has already been sold. The wet salt spreader 40 has a plow 42 attached to the front of a vehicle 41, and a solution tank 43 and a hopper 44 on the bed of the vehicle 41. The solution tank 43 is adapted to be supplied with solution via a water intake 43a. During the snowy and icy season, the wet salt spreader 40 mixes the antifreeze stored in the hopper 44 with the solution in the solution tank 43 and spreads the mixture from the spreading disk 45 to the rear of the vehicle.

[0043] The plow 42 has a center plow 2, a right plow 3, and a left plow 4. The right plow 3 has a mechanism that allows it to open forward by a hydraulic cylinder 3a (see FIG. 1). The left plow 4 has a mechanism that allows it to open forward by a hydraulic cylinder 4a (see FIG. 1). The plow 42, which is open on the left and right, has a mechanism that allows the angle to be adjusted left and right using hydraulic cylinders 42a and 42b (see FIG. 5A and FIG. 5B). Note that the detailed mechanisms are well known and will not be described here. The hydraulic mechanism is not shown in the drawings.

[0044] Spray bars 50a, 50b, and 50c are removably attached to the lower parts of the center plow 2, the right plow 3, and the left plow 4, respectively. In the snowy and icy season, each spray bar is removed from each plow and used, and in other seasons, each spray bar is attached to each plow and the wet salt spreader or the like is used as a road sweeper.

[0045] As shown in FIG. 2, spray bars 50a, 50b, and 50c each include a water pipe 51 extending in the left-right direction, a plurality of spray nozzles 52 connected to the water pipe 51, a cock 53 for opening and closing each spray nozzle 52, an inverted U-shaped water supply pipe 54 that sends water to the water pipe 51, and a water intake port 55 that serves as an inlet for supplying water to the water supply pipe 54.

[0046] If the spacing between the spray nozzles 52 (the spacing between the tips of adjacent spray nozzles 52) is between 80 mm and 150 mm, the water spray ranges from adjacent spray nozzles can be overlapped, as shown by dashed lines in Figures 5A and 5B, so that no uncleaned areas are left and dirt and other debris can be cleaned efficiently.

[0047] 2, the spacing between the multiple spray nozzles 52 in the spray bars 50b and 50c for the right plow 3 and the left plow 4 is narrower than the spacing between the spray nozzles 52 in the spray bar 50a for the center plow 2. For example, the spacing between the spray nozzles 52 in the center plow 2 is set to 125 mm, and the spacing between the spray nozzles 52 in the right plow 3 and the left plow 4 is set to 100 mm.

[0048] For example, the right plow 3 and the left plow 4 are narrower than the center plow 2, but since all three plows have 16 jet nozzles 52 in the illustrated example, the spacing between the jet nozzles 52 of the right plow 3 and the left plow 4 is narrower than that of the center plow 2.

[0049] By narrowing the distance between the injection nozzles 52 of the right plow / left plow, the amount of water and the lap width of the right plow / left plow sections, where debris and other particles tend to accumulate during cleaning, are increased, thereby improving the effectiveness of removing accumulated debris and other particles.

[0050] If the spacing between the jet nozzles 52 of at least one of the right plow 3 and the left plow 4 is narrower than the spacing between the jet nozzles 52 of the centre plow 2, the effect of removing accumulated rubbish and the like is improved.

[0051] The mechanism for attaching each spray bar to each plow will be described with reference to Figures 3 and 4A to 4F. Note that Figures 4A and 4B show a mechanism for attaching spray bar 50a to center plow 2, but spray bars 50b and 50c can be attached to right plow 3 and left plow 4 using a mechanism similar to that shown in Figures 4A and 4B.

[0052] The snow shovel 2a is attached in advance to the lower part of the plow body 2b by a plurality of bolts 2c. The plow side metal fitting 20 shown in Fig. 4C has holes 21 for attaching the two bolts 2c, and the two bolts 2c are removed so that the plow side metal fitting 20 is attached to the lower part of the plow body 2b. At least one plow side metal fitting 20 should be attached to the plow body 2b, but multiple metal fittings may be attached.

[0053] As shown in Fig. 4D, the water-pipe side fitting 30 is a fitting that is attached so that the water pipe 51 passes through it, and has a fulcrum fastening part that is inserted into the fulcrum of the plow side fitting 20, and an oblong hole fastening part that is inserted into the oblong hole of the plow side fitting 20. As shown in Fig. 4D, the water-pipe side fitting 30 is rotatable about the fulcrum, so that the angle of the spray nozzle 52 can be changed and the water spray angle can be adjusted.

[0054] In this manner, as shown in FIGS. 4A and 4B, the spray bar 50a is configured so that the spray angle of the spray nozzle 52 (the angle between the road surface and the extension line of the spray nozzle) can be adjusted.

[0055] Preferably, the jet angle of the jet nozzle 52 can be adjusted between 20 degrees and 50 degrees with respect to the ground.

[0056] For example, when cleaning up soil and sand, the angle of the jet nozzle is preferably 45 degrees ± 5 degrees, and when cleaning up fallen leaves, the angle of the jet nozzle is preferably 30 degrees ± 10 degrees. Note that the jet angles are merely examples and do not limit the present invention.

[0057] In addition, the height of the tip of the spray nozzle from the road surface is preferably between 200 mm and 500 mm. For example, by setting the distance between the tip of the spray nozzle and the road surface in the range of 300 mm ± 50 mm, dirt and the like can be efficiently cleaned.

[0058] The branch pipe 10 is cross-shaped, and distributes water supplied from a water pump (not shown) to the spray bars attached to each plow, as shown in Figures 1 and 3. The branch pipe 10 is detachably attached to the upper part of the center plow 2, as shown in Figures 4A and 4B. The attachment mechanism of the branch pipe 10 is not particularly limited, but for example, as shown in Figure 4E, a branch pipe fitting 13, which is a hook-shaped base, is attached to the center plow with a bolt or the like, and a U-shaped fitting attached to the upper surface of the branch pipe fitting 13 sandwiches the branch pipe 10, so that the branch pipe 10 is attached to a part of the center plow.

[0059] A hose is appropriately used to branch off from the branch pipe 10 to each spray bar, and a specific structure will be described with reference to Fig. 4A. The left and right plows 3 and 4 also have the same structure as that shown in Fig. 4A.

[0060] As shown in FIG. 4A, one end of a first hose 10a is attached to the branch pipe 10. An L-shaped pipe 10b is attached to the other end of the first hose 10a. The L-shaped pipe 10b is attached to the upper part of the plow body 2b. A snow guard plate 2d is originally provided on the upper part of the plow body 2b, and a bolt 2e is provided for attaching the snow guard plate 2d. Then, the L-shaped pipe fitting 12 shown in FIG. 4F is attached to the upper part of the plow body 2b using the bolt 2e. The L-shaped pipe fitting 12 has an L-shaped pipe insertion hole, into which the L-shaped pipe 10b is inserted, and a retaining plate is attached to the L-shaped pipe fitting 12 from above with a bolt or the like to prevent the L-shaped pipe 10b from falling out.

[0061] The second hose 10c is attached to the other end of the L-shaped pipe 10b. The other end of the second hose 10c is attached to the water inlet 55.

[0062] In addition, although the second hose 10c is shown in Figs. 4A and 4B as passing through the snow girt plate 2, in reality, the second hose 10c is positioned so as to be able to exclude the snow girt plate 2d.

[0063] A water pump (not shown) is connected to the water intake port 43a of the solution tank 43. Alternatively, a water pump (not shown) is connected to a water storage bag arranged in the hopper 44. The water pump is placed on a loading platform. A branch pipe 10 is connected to the discharge side of the water pump. Thus, water from the water pump is supplied to each spray bar through the branch pipe 10. The water pump is an engine-driven water supply pump, and is preferably capable of supplying water at, for example, 500 liters per minute and at a pressure of 0.5 MPa or more.

[0064] And, if at least 78 to 157 liters of water per minute is sprayed from each spray bar at a pressure of 0.3 to 0.5 MPa, dirt and the like can be removed efficiently.

[0065] Depending on the area and location of the road surface to be cleaned, the angle of the plow 42 is adjusted appropriately, the cocks 53 of the jet nozzles 52 to be used are opened, and the cocks 53 of the jet nozzles 52 not to be used are closed. For example, as shown in Figures 5A and 5B, the cocks of the spraying range are opened. Note that Figures 5A and 5B show the case of a partial spraying range with the cocks 53 closed, but it goes without saying that all the cocks 53 may be opened to spray the entire width.

[0066] In this embodiment, cleaning of dirt, fallen leaves, etc. on the road is performed using a spray bar attached to a plow that can be tilted left and right in a plan view. The spray bar sends the cleaning material along the left and right inclination of the plow. There is a correlation between the cleaning efficiency and the amount of dirt, fallen leaves, etc., the work speed, the amount of water, and the water spray pressure. The water spray pressure must be changed depending on the specific gravity of the cleaning material. For example, it was found through experiments that cleaning is possible by setting the water spray pressure to 0.5 Mpa for dirt, which has a high specific gravity, and 0.3 Mpa for fallen leaves, which has a low specific gravity. The amount of water is related to the nozzle diameter and nozzle pitch, and the larger the nozzle diameter, the more water there is, and the smaller the nozzle diameter, the less water there is. It is desirable to use as little water as possible to clean the gaps between the intersections. When cleaning materials with an inclined spray bar, the cleaning materials upstream flow downstream, so that cleaning materials tend to accumulate downstream. In order to clean the cleaning objects that accumulate downstream, it is necessary to increase the amount of water on the downstream side or the water pressure, but since the pressure from the water pump is constant, it is possible to clean the cleaning objects such as garbage that accumulate downstream by reducing the nozzle pitch and increasing the amount of water. A method of increasing the nozzle diameter on the downstream side is also possible, but since there are cases where the nozzle is inclined to the right or left, in this embodiment, the nozzle pitch is reduced, but this is not limited to this.

[0067] (Other embodiments) In the above embodiment, the spray bars 50a, 50b, 50c are attached to the front side (front side) of the snow shovel 2a of the plows 2, 3, 4, but the attachment positions of the spray bars 50a, 50b, 50c are not limited to the positions shown in the above embodiment.

[0068] For example, the spray bars 50a, 50b, 50c may be attached directly or indirectly to the rear side of the snow shovel 2a of the plows 2,3,4.

[0069] Fig. 8 shows a right side view of the spray bar 50a indirectly attached to the rear side (back side) of the center plow 2 by attaching it to the plow support part 32 of the center plow 2. In Fig. 8, the same parts as those in the previously shown embodiment are given the same reference numerals and the description thereof will be omitted.

[0070] In FIG. 8, the spray bar 50a is detachably attached to the back (rear) side of the plow 2 via the water pipe side metal fitting 31 to the plow support part 32 for connecting the plow 2 to the vehicle body. The plow support part 32 side is also referred to as the back (rear) side of the plow 2. Although not shown, a metal fitting for connecting the water pipe side metal fitting 31 is attached to the plow support part 32. As shown in FIG. 8, by attaching the spray bar 50a to the plow support part 32, water can be sprayed from the back (rear) side of the plow 2. It is preferable to provide an elongated hole in the water pipe side metal fitting 31 or to provide an elongated hole on the metal fitting side so that the spray angle of the spray bar 50a can be adjusted.

[0071] 9, a plow-side metal fitting 33, such as a T-shape, may be attached directly to the rear side (rear side) of the center plow 2, and the plow-side metal fitting 33 and the water pipe-side metal fitting 31 may be connected with bolts or the like. In FIG. 9, a long hole is provided in the water pipe metal fitting 31 so that the spray angle of the spray bar 50a can be adjusted.

[0072] Although the side plows 3, 4 are not provided with plow supports, it is preferable to attach the plow-side metal fitting 33 directly to the back surface of the plow body 2b and connect the water pipe-side metal fitting 31 to the plow-side metal fitting 33 with bolts or the like, as shown in Fig. 10. In this way, it becomes possible to detachably attach the spray bars 50b, 50c from the back surface of the plows 3, 4 as well.

[0073] Conventionally, plows have been used to remove snow, soil, and sand, but when a spray bar is attached to the front of the plow as in FIG. 4A, it becomes impossible to use the plow to remove snow or soil. However, when a spray bar is attached to the back (rear) side of the plow, it becomes possible to use the plow to remove snow or soil as in the conventional method, and to perform cleaning work by spraying water immediately after the removal. In addition, it is possible to fill a water sprinkler truck with a plow with antifreeze liquid and spray the antifreeze liquid after removing snow with the plow. In this way, by attaching a spray bar to the back (rear) side of the plow, it becomes possible to spray water after removing snow, soil, and the like.

[0074] As can be seen from the above other embodiments, the spray bar may be removably attached not only to the front side (front side) of the plow but also to the rear side (rear side). It is also acceptable for the spray bar to be attached to the rear side of at least one of the plows.

[0075] Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in every respect and is not intended to limit the scope of the present invention. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. Each of the constituent elements of the invention disclosed in this specification is considered to be an independent invention. Inventions in which each of the constituent elements is combined in any combination method are also included in the present invention. [Industrial Applicability]

[0076] INDUSTRIAL APPLICABILITY The present invention relates to a road cleaning device, a road cleaning vehicle and a road cleaning method using the same, and is industrially applicable. [Explanation of symbols]

[0077] 1 Road cleaning device 2. Centre Plow 2a Snow shovel 2b Plow body 2c Bolt 2d Snow Guard Board 2e Bolt 3 Right Plow 3a Hydraulic cylinder 4 Left Plow 4a Hydraulic cylinder 10 Branch Pipe 10a First Hose 10b L-shaped tube 10c Second Hose 12 L-shaped pipe fittings 13 Branch pipe fittings 20 Plow side fitting 21 holes 30,31 Water pipe side fitting 32 Plow support 33 Plow side fitting 40 Wet salt spreader 41 Vehicles 42 Plow 42a, 42b Hydraulic cylinder 43 Solution Tank 43a Water intake 44 Hopper 45 Scattering Disc 50a, 50b, 50c Spray Bar 51 Water pipe 52 Injection nozzle 53 Cook 54 Water supply pipe 55 Water intake

Claims

1. a spray bar removably attached to each of the center plow, the right plow, and the left plow; a water supply line removably attached to each of said plows for delivering a water supply from an external water supply pump to the spray bar, Each of the spray bars includes a water pipe and a plurality of spray nozzles disposed on the water pipe; The road surface cleaning device further includes an angle adjustment means for adjusting the spray angle of the spray nozzle, The angle adjustment means is A plow side fitting detachably attached to the lower part of the plow; A water pipe side fitting attached to the water pipe, A road surface cleaning device, characterized in that the angle between the plow side fitting and the water pipe side fitting is adjustable.

2. A spray bar removably attached to each of the center plow, the right plow, and the left plow; a water supply line removably attached to each of said plows for delivering a water supply from an external water supply pump to the spray bar, The water supply channel is A branch pipe branching in three directions and detachably attached to the center plow; A hose is provided from the branch pipe toward the center plow, the right plow, and the left plow, The hose is connected to the spray bar.

3. The hose has a first hose and a second hose, The first hose is a hose provided from the branch pipe toward the center plow, the right plow, and the left plow, The water supply line includes an L-shaped pipe connected to each of the first hoses and removably attached to an upper portion of each of the plows; The road cleaning device according to claim 2 , wherein the second hose is a hose connected to each of the L-shaped pipes.

4. A spray bar removably attached to each of the center plow, the right plow, and the left plow; a water supply line removably attached to each of said plows for delivering a water supply from an external water supply pump to the spray bar, A road cleaning apparatus, characterized in that the spray bars are attached to the front sides of the center plow, the right plow, and the left plow.

5. 5. The road cleaning device according to claim 1, wherein the angle between the spray direction of the spray nozzle of the spray bar and the road surface is adjustable between 20 degrees and 50 degrees.

6. 5. The road cleaning device according to claim 1, wherein the height of the tip of the injection nozzle of the spray bar from the road surface is between 200 mm and 500 mm.

7. 5. The road cleaning device according to claim 1, wherein the spray nozzles of the spray bar are arranged at intervals of 80 mm to 150 mm.

8. A road cleaning device according to any one of claims 1 to 4, characterized in that the spacing between adjacent spray nozzles of the spray bars arranged on the right plow and / or the left plow is narrower than the spacing between adjacent spray nozzles of the spray bar arranged on the centre plow.

9. The road cleaning device according to any one of claims 1 to 4, characterized in that 78 to 157 liters of water are sprayed per minute from the spray bar at a pressure of any one of 0.3 to 0.5 MPa.

10. 4. The road surface cleaning apparatus according to claim 1, wherein the spray bar is attached to the rear side of the center plow, the right plow and the left plow.

11. A pesticide spraying vehicle with a plow, A road surface cleaning device comprising: a spray bar removably attached to each of a center plow, a right plow, and a left plow; and a water supply channel removably attached to each of the plows for delivering water from an external water supply pump to the spray bar. A road sweeper characterized by being equipped with

12. A road surface cleaning device comprising: a spray bar removably attached to each of a center plow, a right plow, and a left plow; and a water supply line removably attached to each of said plows for delivering water from an external water supply pump to the spray bars. A road surface cleaning method, comprising: cleaning a road surface using the above-mentioned method.

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