JP2020032349A - High pressure washing vehicle - Google Patents

Abstract

To provide a high pressure washing vehicle which can inhibit freezing of washing water when a vehicle travels or is parked outside in a low temperature environment.SOLUTION: A high pressure washing vehicle 1 includes, on a chassis 10, a water tank 12 which stores washing water, a water pump 14 which pumps the washing water in the water tank 12, hoses 2a, 3a which jet the washing water pumped by the water pump 14 to a washed object, and hose reels 2, 3 around which the hoses 2a, 3a are wound. A heater 81 is provided at a pump chamber 13 on the chassis 10 which houses the water pump 14. Air from the heater 81 is supplied to a hose reel chamber 15 where the hose reels 2, 3 are housed.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a high-pressure washing vehicle.

  2. Description of the Related Art Conventionally, a high-pressure washing vehicle for washing an object to be washed such as a drain pipe or a drain pipe has been known (for example, see Patent Document 1). This type of high-pressure washing vehicle includes a hose provided with a washing nozzle at the end, a hose reel around which the hose is wound, and a pump for ejecting high-pressure water from the end of the hose. At the time of work, the hose is drawn out from a hose reel, and high-pressure washing water is sprayed onto the workpiece from a cleaning nozzle or the like at the end of the hose, thereby cleaning the workpiece.

  Conventionally, hoses and water pipes are provided in a state of being exposed to the outside, and thus have the following problems. For example, in a low-temperature environment such as winter, when a vehicle is running or parked outdoors, cold air (cold air) may continuously hit hoses and water pipes. The internal washing water could freeze. When the washing water is frozen, there is a problem that the work cannot be started even when the washing water arrives at the site.

JP 2012-210554 A

  The present invention has been made in view of the above-described circumstances, and provides a high-pressure washing vehicle capable of suppressing freezing of washing water during running of a vehicle in a low-temperature environment or parking outdoors. It is intended to provide.

  According to the present invention, means for solving the above-described problems are configured as follows. That is, the present invention provides a water tank for storing cleaning water on a chassis, a water pump for pumping the cleaning water in the water tank, and a hose for injecting the cleaning water pumped by the water pump to an object to be cleaned. And a hose reel around which the hose is wound, wherein a heater is provided in a pump chamber on the undercarriage that houses the water pump, and air from the heater is housed in the hose reel. Is supplied to the hose reel chamber.

  According to the above configuration, the air from the heater (the air warmed by the heater) is supplied to the hose reel chamber in which the hose reel is housed. The air in the hose reel chamber warms the hose and the water pipe by the air. Thereby, during running of the vehicle in a low-temperature environment or parking outdoors, it is possible to suppress freezing of the washing water in the hose or the water pipe.

  In the present invention, it is preferable that the pump chamber and the hose reel chamber communicate with each other via a heater pipe. According to this configuration, since the air from the heater is directly sent to the hose reel chamber by the heater pipe, the air from the heater can be sent to the hose reel chamber in a warmer state. As a result, the hose and the water pipe in the hose reel room can be efficiently warmed, and the freezing of the washing water in the hose and the water pipe can be efficiently performed while the vehicle is running in a low-temperature environment or parked outdoors. Can be suppressed.

  In the present invention, the water tank is provided between the pump chamber on the vehicle front side and the hose reel chamber on the vehicle rear side, and the heater pipe is provided below the water tank. Is preferred. According to this configuration, it is possible to suppress a decrease in the temperature of warm air sent to the hose reel chamber. More specifically, the hose reel chamber is often arranged at the rear of the vehicle in consideration of workability in a wide range of the left, right and rear of the vehicle, while the water pump is driven by an engine for vehicle traveling. As a result, the water tank is often provided between the pump chamber and the hose reel chamber since the water tank is often arranged in the front part of the vehicle near the engine. By providing the heater pipe below the water tank, the length of the heater pipe can be reduced as much as possible while lowering the center of gravity of the vehicle, so that the temperature of warm air sent to the hose reel chamber can be suppressed from lowering. In addition, by making the length of the heater pipe as short as possible, it is possible to suppress an increase in the weight of the mounted object.

  In the present invention, the chassis has a pair of left and right chassis frames provided at predetermined intervals in a vehicle width direction, and the water tank includes a pair of left and right sub-frames provided on the pair of left and right chassis frames. Provided via a frame, the heater pipe is disposed between the pair of left and right sub-frames, the lower portions of the left and right sub-frames are connected by a lower cover member, the lower part of the heater pipe, Preferably, it is covered by a lower cover member. According to this configuration, during traveling of the vehicle, it is possible to suppress cold air from the side of the vehicle and from below the vehicle from entering the space surrounded by the left and right subframes and the lower cover member, and the cold air flows directly into the heater pipe. , And a decrease in the temperature of the air flowing through the heater pipe can be suppressed. As a result, the air from the heater can be sent to the hose reel chamber in a warmer state, and the hose and the water pipe in the hose reel chamber can be effectively warmed. Freezing of the washing water in the water pipe can be effectively suppressed.

  In the present invention, the lower cover member is also provided in a front-rear gap between the pump chamber and the water tank and a front-rear gap between the water tank and the hose reel chamber. Is preferred. According to this configuration, during traveling of the vehicle, the cool air can be suppressed from entering the space surrounded by the left and right subframes and the lower cover member from below the gap, and the cool air can directly hit the heater pipe. Can be suppressed. As a result, a decrease in the temperature of the air flowing through the heater pipe can be suppressed, the air from the heater can be sent to the hose reel chamber in a warmer state, and the inside of the hose and the water pipe can be cleaned while the vehicle is running in a low-temperature environment. Freezing of water can be effectively suppressed.

  In the present invention, the gap between the pump chamber and the water tank and the gap between the water tank and the hose reel chamber include an upper cover member that connects upper portions of the left and right subframes. It is preferable that an upper portion of the heater pipe is covered with the upper cover member. According to this configuration, during traveling of the vehicle, the upper cover member prevents the cool air from entering the space surrounded by the left and right subframes and the lower cover member from above the gap, and the cool air flows into the heater pipe. Direct hit can be suppressed. As a result, a decrease in the temperature of the air flowing through the heater pipe can be suppressed, and the air from the heater can be sent to the hose reel chamber in a warmer state. And the freezing of the washing water in the water pipe can be effectively suppressed.

  In the present invention, between the pair of left and right subframes, in addition to the heater pipe, a water pipe through which cleaning water pumped by the water pump flows is preferably disposed. According to this configuration, similarly to the heater pipe, it is possible to suppress the cold air from directly hitting the water pipe, and it is possible to suppress a decrease in the temperature of the cleaning water flowing through the water pipe. Thereby, during running of the vehicle in a low-temperature environment or during parking outdoors, freezing of the washing water can be effectively suppressed.

  According to the present invention, the air from the heater is supplied to the hose reel chamber in which the hose reel is housed. Hose and water pipes are warmed. Thereby, during running of the vehicle in a low-temperature environment or parking outdoors, it is possible to suppress freezing of the washing water in the hose or the water pipe.

It is a side view showing a schematic structure of a high pressure washing car concerning an embodiment of the present invention. It is a rear view of the high pressure washing | cleaning vehicle of FIG. It is a top view of the high pressure washing | cleaning vehicle of FIG. It is a figure which shows typically the water circuit provided in the high pressure washing | cleaning vehicle of FIG. FIG. 2 is a perspective view schematically illustrating an arrangement configuration of a heater, a heater pipe, and the like provided in the high-pressure washing vehicle in FIG. 1. It is X1-X1 sectional view taken on the line of FIG. It is a figure which expands and shows the principal part of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a schematic configuration of a high-pressure washing vehicle according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing a schematic configuration of a high-pressure washing vehicle 1 according to an embodiment of the present invention, FIG. 2 is a rear view of the high-pressure washing vehicle 1, and FIG.

  As shown in FIGS. 1 to 3, the high-pressure cleaning vehicle 1 includes a high-pressure cleaning device including a sub-frame 11, a water tank 12, a pump chamber 13, and a hose reel chamber 15 on a chassis 10. . The chassis 10 has a pair of left and right chassis frames 10a, 10a provided at predetermined intervals in the vehicle width direction.

  The water tank 12, the pump chamber 13, and the hose reel chamber 15 are provided via a pair of left and right sub-frames 11, 11 provided on a pair of left and right chassis frames 10a, 10a. The water tank 12 stores cleaning water. The water tank 12 has a tank main body 12a and a pair of left and right tank frames 12b, 12b provided on the bottom surface of the tank main body 12a and extending in the front-rear direction. Are mounted on the sub-frames 11 and 11 via. At the place where the water tank 12 is attached, the bottom surface of the tank body 12a covers the upper part between the left and right of the sub-frames 11,11. The pump chamber 13 houses a water pump 14 (see FIG. 5) for pumping the cleaning water in the water tank 12.

  The hose reel chamber 15 accommodates the large hose reel 2, the small hose reel 3, and the operation panel 4. At the rear end of the sub-frame 11, a turntable 5 rotatable about a vertical axis is mounted. The large hose reel 2, the small hose reel 3, and the operation panel 4 are mounted on the turntable 5. The hose reel chamber 15 is configured so that the whole thereof can be appropriately covered with a wall member. Specifically, a wall 15a provided so as to surround the large hose reel 2 and the small hose reel 3 is provided. The front and upper surfaces of the hose reel chamber 15 are covered by a wall 15a. The left and right side surfaces and the rear surface of the hose reel chamber 15 can be opened and closed by, for example, a revolving door that can rotate around a vertical axis. During operation, the hose reel chamber 15 is in an open state, and when traveling, the hose reel chamber 15 is in a closed state. The rear end of the sub-frame 11 where the hose reel chamber 15 is provided has a sealed structure capable of blocking air from below. 1 and 2 show a state where the hose reel chamber 15 is opened, and FIG. 3 shows a state where the wall portion 15a on the upper surface of the hose reel chamber 15 is removed.

  The large hose reel 2 is a first hose reel around which a large hose 2a as a first hose is wound. The small hose reel 3 is a second hose reel around which a small hose 3a as a second hose is wound. The large hose 2a and the small hose 3a are provided with hydraulic motors 64, 65 (see FIG. 4). By adjusting the rotation direction and the rotation speed of the hydraulic motors 64 and 65, the feeding speed and the winding speed of the large hose 2a and the small hose 3a by the large hose reel 2 and the small hose reel 3 can be changed. . Note that a cleaning nozzle 2b and a cleaning gun 3b (see FIG. 4) serving as a first injection device and a second injection device are detachably attached to the distal ends of the large hose 2a and the small hose 3a, respectively. Further, it is also possible to attach a cleaning nozzle instead of the cleaning gun 3b as the second injection device.

  The operation panel 4 is used for rotating and driving the large hose reel 2 and the small hose reel 3 and for ejecting high-pressure water from the large hose 2a and the small hose 3a. Although illustration is omitted, the operation panel 4 includes an operation lever for operating the forward and reverse rotation of the large hose reel 2 and the small hose reel 3, and the ejection of the washing water to one or both of the large hose 2a and the small hose 3a. There are provided a changeover switch for changing over, a changeover switch for changing over the cleaning water jetted from the small hose 3a to an ultra-high pressure or a high pressure, and the like.

  Next, the configuration of the water circuit 20 of the high-pressure washing vehicle 1 will be described with reference to FIG. FIG. 4 is a diagram schematically showing a water circuit 20 provided in the high-pressure washing vehicle 1.

  As shown in FIG. 4, the water circuit 20 of the high-pressure washing vehicle 1 includes a water tank 12, a water pump 14, a high-pressure regulator 21, an ultra-high pressure regulator 22, an ultra-high pressure / high pressure switching valve 23, an antifreeze tank 70, and the like. It has.

  The water pump 14 is formed by integrating a high-pressure pump and an ultra-high-pressure pump, and is simultaneously driven by a single drive shaft (not shown). This drive shaft is driven by a vehicle traveling engine connected via a power transmission mechanism 8 (see FIG. 1) such as a pulley, a V-belt and a drive shaft, and a PTO (power take-out device). The water pump 14 has a high-pressure discharge part 14a, an ultra-high-pressure discharge part 14b, a suction part 14c, and a cooling water discharge part 14d. The high-pressure discharge section 14a and the suction section 14c constitute a high-pressure pump, and the ultra-high-pressure discharge section 14b and the suction section 14c constitute an ultra-high-pressure pump. The suction part 14c is a common suction part for the high-pressure pump and the ultra-high-pressure pump.

  The water tank 12 and the suction part 14 c of the water pump 14 are connected via a pipe 40. In the middle of the pipe 40, an on-off valve 31 and a strainer 32 are provided in order from the upstream side (the water tank 12 side) to the downstream side (the water pump 14 side). A drain valve 33 is provided at a drain port of the strainer 32. A drain valve 34 is also provided between the water tank 12 and the on-off valve 31. A water supply valve 39 b is connected to the water tank 12 via a pipe 49.

  The high-pressure discharge part 14 a, which is one discharge side of the water pump 14, is connected to an inflow port 21 a of the high-pressure regulating valve 21 via a pipe 41. The high-pressure regulating valve 21 is a three-way valve that is remotely operated, and is turned on / off depending on whether air is supplied. One outflow port 21b of the high-pressure regulating valve 21 is connected to a large hose 2a via a pipe (high-pressure water pipe) 42. A large hose opening / closing valve 28 for switching the supply of the washing water to the large hose 2a is provided in the middle of the pipe 42. A drain valve 36 is provided in the middle of the pipe 42.

  The return port 21 c of the high-pressure regulating valve 21 is connected to the water tank 12 and the antifreeze tank 70 via a pipe 43. The antifreeze tank 70 stores antifreeze. An antifreeze three-way valve 71 is provided in the middle of the pipe 43, and the connection destination of the return port 21 c is switched to the water tank 12 or the antifreeze tank 70 by the antifreeze three-way valve 71. A drain valve 73 is provided between the return port 21c and the three-way valve 71 for antifreeze.

  The high-pressure regulating valve 21 is turned on when air is supplied through an air pipe (not shown), and guides the washing water flowing from the pipe 41 to the pipe 42. However, when the pressure of the high-pressure regulating valve 21 exceeds a predetermined set pressure, a part of the washing water is released to the return pipe 43 to adjust the pressure to the set pressure. The set pressure of the high-pressure regulating valve 21 is changed according to the pressure of the supplied air. On the other hand, if air is not supplied, the high pressure regulating valve 21 is turned off, and the cleaning water flowing from the pipe 41 is guided to the return pipe 43 and discharged to the water tank 12.

  The ultrahigh-pressure discharge section 14b, which is one discharge side of the water pump 14, is connected to the small hose 3a via a pipe (ultrahigh-pressure water pipe) 44. A small hose opening / closing valve 29 for switching the supply of the washing water to the small hose 3a is provided in the middle of the pipe 44.

  A pressure gauge 37 and drain valves 38a and 38b are provided upstream of the small hose on-off valve 29 in the pipe 44. One end of a branch pipe 45 is connected to a middle portion of the pipe 44 upstream of the small hose on-off valve 29. The other end of the branch pipe 45 is connected to the first port 23a of the ultra-high pressure / high pressure switching valve 23.

  The ultra-high pressure / high pressure switching valve 23 is a three-way valve that is remotely operated, and the communication state is switched depending on whether air is supplied. The second port 23b of the ultra-high pressure / high pressure switching valve 23 is connected to an intermediate portion of the pipe 41 via a bypass pipe 46. The third port 23 c of the ultrahigh pressure / high pressure switching valve 23 is connected to the ultrahigh pressure regulating valve 22 via a pipe 47.

  The ultra-high pressure / high pressure switching valve 23 is turned on when air is supplied through an air pipe (not shown), and the first port 23a, the second port 23b, and the third port 23c are in communication. On the other hand, the ultra-high pressure / high pressure switching valve 23 is turned off when air is not supplied, and the first port 23a and the third port 23c communicate with each other, and the second port 23b is shut off. That is, when air is not supplied to the ultra-high pressure / high pressure switching valve 23, the bypass pipe 46 is closed.

  The ultra-high pressure regulating valve 22 is also a remotely operated valve, and is turned on / off depending on whether air is supplied. The pipe 47 is connected to the inflow port 22 a of the ultrahigh pressure regulating valve 22. The outflow port 22b of the ultrahigh pressure regulating valve 22 is connected to the water tank 12 and the antifreeze tank 70 via a pipe 48. An antifreeze liquid three-way valve 72 is provided in the middle of the pipe 48, and the connection destination of the outflow port 22 b is switched to the water tank 12 or the antifreeze liquid tank 70 by the antifreeze liquid three-way valve 72. A drain valve 74 is provided between the outflow port 22b and the three-way valve 72 for antifreeze.

  The super-high pressure regulating valve 22 is turned on when air is supplied through an air pipe (not shown), and when the pressure becomes equal to or higher than a predetermined set pressure, the pressure is adjusted to the set pressure by releasing a part of the washing water to the pipe 48. I do. The set pressure of the ultrahigh pressure regulating valve 22 is changed by the pressure of the supplied air. On the other hand, the super high pressure regulating valve 22 is turned off unless air is supplied, the pipe 48 is opened, and the washing water is discharged to the water tank 12.

  The cooling water discharge part 14 d of the water pump 14 is connected to an antifreeze tank 70 in the pump chamber 13 via a return pipe 53. A drain valve 75 is provided in the middle of the return pipe 53. One end of a branch pipe 54 is connected to a middle part of the return pipe 53 upstream of the small hose on-off valve 29. One end of a branch pipe 54 is connected to a portion of the return pipe 53 between the cooling water discharge part 14 d and the drain valve 75. The other end of the branch pipe 54 is connected to a portion of the pipe 40 between the on-off valve 31 and the strainer 32. That is, the pipe 40 and the return pipe 53 are connected via the branch pipe 54.

  In the present embodiment, in the high-pressure washing vehicle 1 having the above configuration, the heater 81 is provided in the pump chamber 13 that houses the water pump 14, and the air from the heater 81 is supplied to the hose reel chamber 15 in which the hose reels 2 and 3 are housed. It is characterized by being supplied to. Hereinafter, this feature will be described with reference to FIGS. 5 is a perspective view schematically showing the arrangement of the heater 81, the heater pipe 82, and the like provided in the high-pressure washing vehicle 1, FIG. 6 is a cross-sectional view taken along line X1-X1 of FIG. 1, and FIG. FIG. 3 is an enlarged view of a main part (a part surrounded by a chain line).

  As shown in FIG. 5, in the high-pressure washing vehicle 1, the pump chamber 13, the water tank 12, and the hose reel chamber 15 are arranged in order from the front side to the rear side of the vehicle. A front-back gap C1 is provided between the pump chamber 13 and the water tank 12, and a front-back gap C2 is provided between the water tank 12 and the hose reel chamber 15. In FIG. 5, the gaps C1 and C2 are exaggerated.

  A heater 81 is provided in the pump chamber 13. The heater 81 is driven by a fuel such as light oil, for example. The heater 81 is connected to a heater pipe 82, and air from the heater 81 (air heated by the heater 81) is sent to the heater pipe 82. The heater pipe 82 extends from the lower part of the pump chamber 13 to the lower part of the hose reel chamber 15 via the lower part of the water tank 12, and the outlet (hot air port) 82 a of the heater pipe 82 is connected to the hose reel chamber 15. Are in communication. Further, the heater pipe 82 is branched at a lower portion of the pump chamber 13, and an outlet 82 b of the branched heater pipe 82 is opened in the pump chamber 13, and air from the heater 81 is also supplied to the pump chamber 13. It is being sent.

  As shown in FIG. 5 to FIG. 7, a pair of right and left heater pipes 82 are provided below the pump chamber 13, the water tank 12, and the hose reel chamber 15 at predetermined intervals in the vehicle width direction. It is arranged between the sub-frames 11 and 11. Each sub-frame 11 has a substantially U-shaped cross section. The pair of left and right subframes 11 are connected by a plurality of cross members 16 arranged in the vehicle front-rear direction. The lower portions of the left and right subframes 11 and 11 and the cross member 16 are connected to each other by a lower cover member 83, and the lower cover member 83 covers a lower portion of the heater pipe 82. The lower cover member 83 is formed of, for example, an iron plate or the like. The lower portion of each subframe 11 and the lower cover member 83 are integrally connected by, for example, butt welding or the like. Chassis frames 10a, 10a constituting the chassis 10 are provided below the left and right subframes 11, 11, and a cushioning member 87 such as rubber is interposed between the chassis frame 10a and the subframe 11. Have been. Thus, the lower cover member 83 is sandwiched between the lower portions of the left and right subframes 11, 11, so that no gap is formed between the lower portion of each subframe 11 and the lower cover member 83. ing.

  An upper cover member 84 is provided in a gap C1 between the pump chamber 13 and the water tank 12 and a gap C2 between the water tank 12 and the hose reel chamber 15. Specifically, the upper part of the heater pipe 82 is covered by the lower part of the pump chamber 13, the water tank 12, and the hose reel chamber 15.

  In the places where the gaps C1 and C2 are provided, the upper portions of the left and right subframes 11 and 11 are connected by an upper cover member 84, and the upper sides of the gaps C1 and C2 are closed by the upper cover member 84. , The upper part of the heater pipe 82 is covered. The upper cover member 84 is formed of, for example, an iron plate or the like, and is arranged in parallel with the lower cover member 83. The upper cover member 84 has, for example, a cover portion 84a extending in the front-rear direction with a U-shaped cross section, and a rising portion 84b extending upward from the front-rear end of the cover portion 84a. The upper parts of the sub-frames 11 and 11 and the cover part 84a of the upper cover member 84 are integrally connected by, for example, bolting or welding. In addition, the surface of each tank frame 12b in the vehicle front-rear direction and the rising portion 84b of the upper cover member 84 are integrally connected by, for example, bolting or welding. In this way, at the location where the gaps C1 and C2 are provided, the gap between the lower portions of the left and right tank frames 12b and 12b is closed by the rising portion 84b of the upper cover member 84. The end of the upper cover member 84 provided on the gap C1 side may enter the pump chamber 13, or the end of the upper cover member 84 provided on the gap C2 side may be connected to the hose reel chamber 15. You may be inside.

  On the other hand, the lower cover member 83 is formed to extend in the front-rear direction with the water tank 12 interposed therebetween, and is provided below the water tank 12 and at a location where the gaps C1 and C2 are provided. That is, the lower sides of the gaps C1 and C2 are closed by the lower cover member 83. In this case, one end of the lower cover member 83 only needs to reach the pump chamber 13, and one end of the lower cover member 83 may enter the pump chamber 13. The other end of the lower cover member 83 only needs to reach the hose reel chamber 15, and the other end of the lower cover member 83 may enter the hose reel chamber 15. Then, the bottom surface of the tank body 12a of the water tank 12, the left and right inner surfaces of the pair of left and right tank frames 12b and 12b, the inner surface of the upper cover member 84, and the left and right inner surfaces of the pair of left and right subframes 11 and 11. A heater pipe 82 is housed in a space 80 surrounded by the inner surface of the lower cover member 83. Further, in this space 80, water pipes (high-pressure water pipe 42 and ultra-high-pressure water pipe 44) through which the wash water pumped by the water pump 14 flows are arranged.

  As described above, in the present embodiment, the air from the heater 81 (air heated by the heater 81) is supplied to the hose reel chamber 15 in which the hose reels 2 and 3 are accommodated. While the vehicle is running in a low-temperature environment or parked outdoors, the air from the heater 81 heats the hoses 2a, 3a and the water pipe in the hose reel chamber 15. Thereby, during running of the vehicle in a low-temperature environment or parking outdoors, it is possible to suppress freezing of the washing water in the hoses 2a, 3a and the water pipe.

  In the present embodiment, since the pump chamber 13 and the hose reel chamber 15 communicate with each other via the heater pipe 82, air from the heater 81 is directly sent to the hose reel chamber 15 by the heater pipe 82. Therefore, the air from the heater 81 can be sent to the hose reel chamber 15 in a warmer state. As a result, the hoses 2a, 3a and the water pipe in the hose reel chamber 15 can be efficiently warmed, and while the vehicle is running in a low-temperature environment or parked outdoors, the inside of the hose 2a, 3a or the water pipe can be heated. Freezing of the washing water can be suppressed efficiently. Further, since the water tank 12 is provided between the pump chamber 13 on the front side of the vehicle and the hose reel chamber 15 on the rear side of the vehicle, and the heater pipe 82 is provided below the water tank 12, The length of the heater pipe 82 can be reduced as much as possible while lowering the center of gravity. Further, the bottom surface of the tank body 12a of the water tank 12 is in contact with the space 80, and the internal space of the pump chamber 13 and the internal space of the hose reel chamber 15 are connected to the space 80. When flowing through the heater pipe 82, the warm air from the outlets 82a and 82b reaches the space 80 after passing through the pump chamber 13 and the hose reel chamber 15, and the space 80 is warmed. In addition, the tank body 12a above the space 80 can be indirectly warmed. Thereby, during running of the vehicle in a low-temperature environment or during parking outdoors, freezing of the washing water can be effectively suppressed. Further, by making the length of the heater pipe 82 as short as possible, it is possible to suppress an increase in the weight of the mounted object.

  Further, in the present embodiment, the heater pipe 82 is disposed between the pair of left and right sub-frames 11, 11, and the lower portions of the left and right sub-frames 11, 11 are connected by a lower cover member 83. Is covered by a lower cover member 83. Accordingly, the right and left sub-frames 11 and 11 and the lower cover member 83 can suppress the cool air from the side of the vehicle and the lower side of the vehicle from directly hitting the heater pipe 82 while the vehicle is traveling, and the air flowing through the heater pipe 82 Temperature can be suppressed. That is, in the related art, there is a gap between the lower portions of the left and right sub-frames 11, 11, and the cool air from below the vehicle enters through the gap. In the present embodiment, the lower cover member 83 is provided. , Such a gap is closed. Therefore, during traveling of the vehicle, it is possible to prevent cold air from below the vehicle from entering the space 80 surrounded by the left and right subframes 11 and 11 and the lower cover member 83, and the cold air directly hits the heater pipe 82. Can be suppressed, and a decrease in the temperature of the air flowing through the heater pipe 82 can be suppressed. As a result, the air from the heater 81 can be sent to the hose reel chamber 15 in a warmer state, and the hoses 2a and 3a and the water pipes in the hose reel chamber 15 can be effectively warmed. During traveling, freezing of the washing water in the hoses 2a and 3a and the water pipes can be effectively suppressed.

  Further, since the lower cover member 83 is also provided in the gap C1 between the pump chamber 13 and the water tank 12 and in the gap C2 between the water tank 12 and the hose reel chamber 15, the cold air flows through the gap C1 during running of the vehicle. , C2 from below and into the space 80 surrounded by the left and right sub-frames 11 and 11 and the lower cover member 83, and it is possible to prevent cold air from directly hitting the heater pipe 82. Thus, a decrease in the temperature of the air flowing through the heater pipe 82 can be suppressed, the air from the heater 81 can be sent to the hose reel chamber 15 in a warmer state, and the inside of the hoses 2a and 3a can be reduced during running of the vehicle in a low-temperature environment. And the freezing of the washing water in the water pipe can be effectively suppressed.

  In a space 80 surrounded by the left and right subframes 11 and 11 and the lower cover member 83, water pipes (high-pressure water pipe 42 and ultra-high-pressure water pipe 44) are arranged in addition to the heater pipe 82. Thereby, similarly to the heater pipe 82, it is possible to suppress the cold air from directly hitting the water pipe, and it is possible to suppress a decrease in the temperature of the cleaning water flowing through the water pipe. Thereby, during running of the vehicle in a low-temperature environment or during parking outdoors, freezing of the washing water can be effectively suppressed.

  An upper cover member 84 is provided in the gap C1 between the pump chamber 13 and the water tank 12 and in the gap C2 between the water tank 12 and the hose reel chamber 15 to connect the upper parts of the left and right subframes 11 and 11 to each other. The upper part of the heater pipe 82 is covered by an upper cover member 84. Thereby, during traveling of the vehicle, the upper cover member 84 can suppress the cool air from entering the space 80 surrounded by the left and right subframes 11, 11 and the lower cover member 83 from above the gaps C1, C2, Cold air can be suppressed from directly hitting the heater pipe 82. This can suppress a decrease in the temperature of the air flowing through the heater pipe 82, and can send the air from the heater 81 to the hose reel chamber 15 in a warmer state, so that the vehicle can be driven in a low-temperature environment or parked outdoors. In addition, the freezing of the washing water in the hoses 2a and 3a and the water pipe can be effectively suppressed.

  The embodiment disclosed this time is an exemplification in all respects, and is not a basis for restrictive interpretation. The technical scope of the present invention is not construed only by the embodiments described above, but is defined based on the description of the claims. Further, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the claims.

  In the above embodiment, the example in which the two hose reels of the large hose reel 2 and the small hose reel 3 are provided has been described. However, the present invention is not limited to this, and the present invention is also applied to a high-pressure washing vehicle provided with only one hose reel. Is applicable.

  Further, in the above embodiment, the example in which the high-pressure cleaning water and the ultra-high-pressure cleaning water can be jetted from the cleaning nozzle or the like at the end of the hose has been described. The present invention is applicable.

  Further, in the above-described embodiment, the example in which the water tank 12 is provided between the pump chamber 13 and the hose reel chamber 15 has been described. However, the present invention is also applied to a high-pressure washing vehicle in which the water tank is disposed in other places. Is applicable.

  INDUSTRIAL APPLICATION This invention can be utilized for the high pressure washing | cleaning vehicle which wash | cleans to-be-washed objects, such as a sewer pipe and a drain pipe.

DESCRIPTION OF SYMBOLS 1 High-pressure washing car 2 Large hose reel 2a Large hose 3 Small hose reel 3a Small hose 11 Subframe 12 Water tank 13 Pump room 14 Water pump 15 Hose reel room 20 Water circuit 81 Heater 82 Heater piping 83 Lower cover member 84 Upper cover member

Claims (7)

On the chassis,
A water tank for storing washing water,
A water pump for pumping the washing water in the water tank,
A hose for injecting the washing water pumped by the water pump onto the object to be washed,
A high pressure washing car comprising a hose reel around which the hose is wound,
A heater is provided in a pump chamber on the undercarriage that houses the water pump,
A high pressure washing vehicle, wherein air from the heater is supplied to a hose reel chamber in which the hose reel is housed. The high-pressure washing vehicle according to claim 1,
A high-pressure washing vehicle, wherein the pump chamber and the hose reel chamber are communicated via a heater pipe. The high-pressure washing vehicle according to claim 2,
The water tank is provided between the pump chamber on the vehicle front side and the hose reel chamber on the vehicle rear side,
The high-pressure washing vehicle, wherein the heater pipe is provided below the water tank. The high-pressure washing vehicle according to claim 3,
The chassis has a pair of left and right chassis frames provided at predetermined intervals in a vehicle width direction,
The water tank is provided via a pair of left and right sub-frames provided on the pair of left and right chassis frames,
The heater pipe is arranged between the pair of left and right sub-frames,
A high-pressure washing vehicle wherein lower portions of the left and right subframes are connected by a lower cover member, and a lower portion of the heater pipe is covered by the lower cover member. The high-pressure washing vehicle according to claim 4,
The lower cover member is also provided in a front-rear gap between the pump chamber and the water tank and a front-rear gap between the water tank and the hose reel chamber. High pressure washing car. The high-pressure washing vehicle according to claim 5,
In the gap between the pump chamber and the water tank, and in the gap between the water tank and the hose reel chamber, an upper cover member that connects upper portions of the left and right subframes is provided. Yes,
A high-pressure washing vehicle wherein an upper portion of the heater pipe is covered by the upper cover member. The high-pressure washing vehicle according to any one of claims 4 to 6,
A high-pressure washing vehicle, wherein a water pipe through which washing water pumped by the water pump flows is disposed between the pair of left and right subframes, in addition to the heater pipe.

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