Cleaning system and cleaning vehicle

Abstract

To provide a cleaning system and a cleaning vehicle capable of performing cleaning even if a cleaning place is restricted.SOLUTION: A cleaning system for cleaning a moving body with a cleaning liquid, the cleaning liquid being a gas-liquid mixture containing a gas bubble having a bubble diameter of 1 μm or less in a liquid or containing the gas-liquid mixture, the cleaning system including a gas bubble generation device that generates the gas-liquid mixture, a nozzle that discharges the cleaning liquid, a supply pipe that supplies the cleaning liquid to the nozzle, a pump that causes the cleaning liquid to flow through the supply pipe, and at least one vehicle including a vehicle main body and a positioning mechanism that is provided on the vehicle main body and determines a position of the nozzle, the positioning mechanism is configured to be able to displace a position of the nozzle to any of left and right positions of the vehicle body, and at least one of the vehicle and the moving body moves.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a washing system and a washing vehicle for washing a moving object as a washing target. [Background technology]

[0002] It has been proposed to use a gas-liquid mixture containing bubbles with a diameter of 1 μm or less in a cleaning technology. Patent Document 1 proposes a technology using a cleaning vehicle as a mobile cleaning device that cleans an object to be cleaned with the gas-liquid mixture. In this specification, the object to be cleaned is referred to as the cleaning object. Furthermore, the cleaning vehicle is referred to as the cleaning vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-263952 Summary of the Invention [Problem to be solved by the invention]

[0004] When cleaning a moving object, the location where the object can be cleaned may be limited depending on the type and purpose of the object. For example, when cleaning a moving object such as a vehicle used in emergency activities in disaster areas after an earthquake, it may be difficult to freely secure a location that can be used for cleaning. In addition, during emergency activities, the environment changes from moment to moment, and quick response is required.

[0005] With the technology proposed in Patent Document 1, in situations where the washing location is limited, the direction of the washing vehicle needs to be taken into consideration when parking, and once the washing vehicle is parked while taking the direction of the washing vehicle into consideration, if the washing location needs to be changed, particularly to the opposite side, the vehicle needs to be parked again, making it difficult to wash flexibly. Therefore, the technology proposed in Patent Document 1 has room for further improvement in terms of enabling washing of mobile objects flexibly even when the washing location is limited.

[0006] One object of the present invention is to provide a washing system and washing vehicle that can perform washing even when the washing location is limited. [Means for solving the problem]

[0007] The present invention is summarized as follows: (1) to (6). (1) A cleaning system for cleaning a moving object with a cleaning solution, The cleaning liquid is a gas-liquid mixture containing bubbles with a diameter of 1 μm or less in the liquid, or contains the gas-liquid mixture, a bubble generating device for generating the gas-liquid mixture; a nozzle for discharging the cleaning liquid; a supply pipe for supplying the cleaning liquid to the nozzle; a pump for causing the cleaning liquid to flow through the supply pipe; At least one vehicle having a vehicle body and a positioning mechanism provided on the vehicle body to determine the position of the nozzle; the positioning mechanism is configured to be able to displace the position of the nozzle to either the left or right position of the vehicle body, At least one of the vehicle and the moving object moves. Cleaning system. (2) The cleaning system according to (1), A plurality of the vehicles are arranged, and at least one of the vehicles is arranged on each of the right and left sides of the moving body. Cleaning system. (3) The cleaning system according to (1), At a plurality of different positions on the vehicle body, The positioning mechanism is provided, At least one of the vehicle and the moving object is moved to each of the positions on the right and left sides of the vehicle. Cleaning system. (4) A cleaning vehicle having a vehicle body and for cleaning a moving body with a cleaning solution, The cleaning liquid is a gas-liquid mixture or contains the gas-liquid mixture, The vehicle body includes: a supply source of a liquid that is a raw material for the gas-liquid mixture; a bubble generating device for generating the gas-liquid mixture; a supply pipe for supplying the cleaning liquid to a nozzle for discharging the cleaning liquid; a pump for causing the cleaning liquid to flow through the supply pipe; a positioning mechanism for determining the position of the nozzle is provided on the vehicle body; The positioning mechanism is configured to be able to move the position of the nozzle to either the left or right position of the vehicle body. Washing vehicle. (5) The cleaning vehicle described in (4) above, The positioning mechanism includes: a switching structure for switching between a right-side shifting operation as an operation for disposing the position of the nozzle at a position on the right side of the vehicle body and a left-side shifting operation as an operation for disposing the position of the nozzle at a position on the left side of the vehicle body; Washing vehicle. (6) The cleaning vehicle according to (5) above, The switching structure is a support structure for fixing the position of the nozzle, and switching between the right-side transition operation and the left-side transition operation in response to movement and / or rotation of the support structure; Washing vehicle.

[0008] The present invention may be the inventions described in the following (7) and (8). (7) A cleaning system according to any one of (1) to (3) above, The positioning mechanism includes: a switching structure for switching between a right-side shifting operation as an operation for disposing the position of the nozzle at a position on the right side of the vehicle body and a left-side shifting operation as an operation for disposing the position of the nozzle at a position on the left side of the vehicle body; Cleaning system. (8) The cleaning system according to (7), The switching structure is a support structure for fixing the position of the nozzle, and switching between the right-side transition operation and the left-side transition operation in response to movement and / or rotation of the support structure; Cleaning system. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a washing system and a washing vehicle that can perform washing flexibly even when the washing location is limited. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a plan view for explaining the configuration of an embodiment of a cleaning system according to the present invention. [Figure 2] Fig. 2A is a side view illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention, and Fig. 2B is a plan view illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention. [Figure 3] Fig. 3A is a front view illustrating an example of an arm material that can be used in an embodiment of the cleaning system according to the present invention. Fig. 3B is a front view illustrating an example of an arm material that can be used in an embodiment of the cleaning system according to the present invention. Fig. 3C is a side view of the arm material shown in Fig. 3A. Fig. 3D is a side view of the arm material shown in Fig. 3B. [Figure 4] Fig. 4A is an enlarged schematic cross-sectional view of the state of the vertical cross section taken along line A1-A1 in Fig. 1, and is a view for explaining the cross section of the arm material in Fig. 3A. Fig. 4B is a cross-sectional view for explaining the cross section of the arm material in Fig. 3B. [Figure 5]Fig. 5A is a cross-sectional view illustrating the configuration of an embodiment of a bubble generator. Fig. 5B is a diagram showing the state of an embodiment of a bubble generation mechanism of a bubble generator when the line of sight is from the upstream end to the downstream end. Fig. 5C is a schematic cross-sectional view of the bubble generator corresponding to the vertical cross section taken along line AA in Fig. 5A. Fig. 5D is a schematic enlarged cross-sectional view showing an enlarged portion of region SP surrounded by a dashed line in Fig. 5C. [Figure 6] 6A and 6B are diagrams illustrating an example of a state in which the cleaning system is used. [Figure 7] 7A and 7B are diagrams illustrating an example of an arm member that can be used in an embodiment of the cleaning system according to the present invention. [Figure 8] FIG. 8 is a plan view for explaining the configuration of one embodiment of a cleaning system according to the present invention. [Figure 9] Fig. 9A is a side view for explaining the configuration of one embodiment of a cleaning system according to the present invention, Fig. 9B is an enlarged schematic cross-sectional view showing the state of the vertical cross section taken along line A2-A2 in Fig. 8. [Figure 10] 10A and 10B are plan views illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention; [Figure 11] FIG. 11 is a plan view for explaining the configuration of one embodiment of a cleaning system according to the present invention. [Figure 12] FIG. 12 is a plan view for explaining the configuration of one embodiment of a cleaning system according to the present invention. [Figure 13] FIG. 13 is a plan view for explaining the configuration of one embodiment of a cleaning system according to the present invention. [Figure 14] FIG. 14 is a plan view for explaining the configuration of one embodiment of a cleaning system according to the present invention. [Figure 15] FIG. 15 is a diagram illustrating an example of a state in which an embodiment of the cleaning system according to the present invention is used. [Figure 16]Fig. 16A is a side view illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention. Fig. 16B is a plan view of the vehicle shown in Fig. 16A, illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention. [Figure 17] Fig. 17A is a side view illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention. Fig. 17B is a plan view of the vehicle shown in Fig. 17A, illustrating an example of a vehicle that can be used in an embodiment of the washing system of the present invention. [Figure 18] Fig. 18A is a side view illustrating an example of a vehicle that can be used in one embodiment of the washing system of the present invention. Fig. 18B is a plan view of the vehicle shown in Fig. 18A, illustrating an example of a vehicle that can be used in one embodiment of the washing system of the present invention. [Figure 19] Fig. 19A is a side view for explaining one embodiment of a cleaning vehicle according to the present invention, and Fig. 19B is a plan view of the vehicle shown in Fig. 19A, for explaining an example of a vehicle that can be used in one embodiment of a cleaning system according to the present invention. [Figure 20] Fig. 20A is a side view illustrating an embodiment of a cleaning vehicle according to the present invention. Fig. 20B is a plan view of the vehicle shown in Fig. 20A, illustrating an example of a vehicle that can be used in an embodiment of a cleaning system according to the present invention. Fig. 20C is a front view of the vehicle shown in Fig. 20A, illustrating an example of a vehicle that can be used in an embodiment of a cleaning system according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] The embodiments of the present invention will be described in the order of "washing system" and "washing vehicle." Note that the present invention is not limited to the embodiments described below.

[0012] The following description is of preferred specific examples of the present invention, and the contents of the present invention are not limited to the described embodiments.

[0013] The relative size and thickness ratios of each layer shown in each drawing, such as Figure 1, are shown for convenience and do not limit the actual size ratios. The same applies to each drawing, such as Figures 2 to 20, regarding the definitions of these directions and the size ratios.

[0014] In the following explanation, directions such as front-rear, left-right, and up-down are indicated for the sake of convenience. In the examples of Figures 1 and 2, the Z axis direction is the up-down direction (upper side is the +Z direction, lower side is the -Z direction), the X axis direction is the front-rear direction (front side (traveling direction) is the -X direction, rear side is the +X direction), and the Y axis direction is the left-right direction (right side as viewed in the traveling direction is the +Y direction, left side is the -Y direction), and the explanation will be based on this. The same applies to Figures 3 to 20.

[0015] In this specification, for the sake of convenience, the traveling direction of the vehicle (forward direction) is referred to as the forward direction, the opposite direction to the forward direction is referred to as the backward direction, the right and left sides as seen from a passenger in a forward-moving vehicle are referred to as the right and left directions, respectively, the direction toward the ground surface as seen from a passenger in a vehicle moving forward on the ground surface is referred to as the downward direction, and the opposite direction to the downward direction is referred to as the upward direction. Furthermore, the descriptions of the various parts shown in the drawings do not necessarily limit the size.

[0016] [1. Cleaning system] The cleaning system 10 according to the present invention is a system for cleaning a moving body MB with a cleaning liquid CS.

[0017] [Cleaning system configuration] 1, the washing system 10 includes a nozzle 11 that discharges washing liquid CS, a supply pipe 12 that supplies the washing liquid CS to the nozzle 11, a pump 13 that causes the washing liquid CS to flow through the supply pipe 12, and a vehicle 50 that includes a vehicle body 51, with a positioning mechanism 30 provided on the vehicle body 51. The washing liquid CS used in the washing system 10 is a gas-liquid mixture or a liquid containing the gas-liquid mixture. Therefore, the washing system 10 includes a bubble generator 15 that generates the gas-liquid mixture.

[0018] (flow path) In the cleaning system, a liquid flow path FPS is formed. In the example of Fig. 1, the flow path FPS is configured so that, in response to the drive of the pump 13, liquid is sent from a liquid supply source 16 through a supply pipe 12 to the pump 13, and then flows from the pump 13 through the supply pipe 12 toward the nozzle 11. In the flow path FPS, a bubble generator 15 is disposed between the pump 13 and the liquid supply source 16, and a gas-liquid mixture is formed in the bubble generator 15. Therefore, the liquid flowing from the pump 13 through the supply pipe 12 toward the nozzle 11 is a gas-liquid mixture, and the gas-liquid mixture is discharged from the nozzle 11 as cleaning liquid CS.

[0019] (vehicle) The washing system 10 includes at least one vehicle 50. The vehicle 50 includes the vehicle body 51 and the positioning mechanism 30 as described above.

[0020] The vehicle 50 is not particularly limited in shape and structure of the vehicle body 51, but preferably has a structure capable of carrying cargo, such as a transport vehicle. The transport vehicle refers to a freight truck or the like.

[0021] A positioning mechanism 30 is provided on the vehicle body 51. The vehicle body 51 shown in the examples of Figures 1, 2A, and 2B has a driver's seat section 52 and a cargo bed section 53, and wheels 55 are provided on the undersides of the driver's seat section 52 and the cargo bed section 53. In addition, the positioning mechanism 30 is provided on a cargo bed surface 54 of the cargo bed section 53.

[0022] (positioning mechanism) The positioning mechanism 30 is a structural mechanism configured to determine the position of the nozzle 11. The positioning mechanism 30 is configured to be able to move the position of the nozzle 11 to either the left or right side of the vehicle body 51. For example, the positioning mechanism 30 shown in the examples of FIGS. 1, 2A, and 2B has a switching structure 31 that switches between a right-side shifting operation, which is an operation to position the nozzle 11 to the right side of the vehicle body 51 (the side in the direction of the arrow FP2 in FIG. 2B), and a left-side shifting operation, which is an operation to position the nozzle 11 to the left side of the vehicle body 51 (the side in the direction of the arrow FP1 in FIG. 2B). In this example, the right-side shifting operation is an operation to shift the position of the nozzle 11 to the right side of the vehicle body 51. The left-side shifting operation is an operation to shift the position of the nozzle 11 to the left side of the vehicle body 51.

[0023] (Switching structure) In the example of FIG. 1, the switching structure 31 has a support structure 32 and is configured to be able to switch between right-side transition operation and left-side transition operation in accordance with the movement and / or rotation of the support structure 32.

[0024] (pillar structure) The support structure 32 fixes the position of the nozzle 11. Fixing the position of the nozzle 11 means defining the relative arrangement of the support structure 32 and the nozzle 11. The support structure 32 includes a support 33 and an arm member 34. The arm member 34 has a first arm portion 35 attached to the support 33, and a second arm portion 36 connected to the first arm portion 35 and to which the nozzle 11 can be attached.

[0025] (post) The support pillar 33 is attached to the vehicle body 51. In the example of Fig. 1, the support pillar 33 is attached to the loading platform surface 54 so as to be rotatable around the axis of rotation in the direction in which the support pillar 33 extends (the direction along the dashed dotted line M in Fig. 2).

[0026] (Arm material) In the example of FIG. 1 , the arm member 34 has one end 35A of the first arm portion 35 fixed to the support 33. The other end 35B of the first arm portion 35 has a receiving portion 37 formed thereon, and the receiving portion 37 is shaped to receive at least a portion of the second arm portion 36. In the example of FIG. 1 , the receiving portion 37 is formed in an annular shape, and the second arm portion 36 is inserted into the receiving portion 37. The receiving portion 37 and the second arm portion 36 are then fixed together with a fixing member or the like. This fixes the first arm portion 35 and the second arm portion 36 together. The fixing member that fixes the receiving portion 37 and the second arm portion 36 to each other may be a screw or the like. In this case, it is preferable that the outer circumferential surface of the second arm portion 36 be in contact with the inner circumferential surface of the receiving portion 37 in order to stabilize the position of the second arm portion 36. The example of the receiving portion 37 shown in FIG. 1 is just an example, and the structure of the receiving portion 37 is not limited to the structure shown in FIG.

[0027] As illustrated in FIGS. 3A, 3C, and 4A, the second arm portion 36 is hollow and includes a nozzle positioning hole 60, which serves as a receiving hole for positioning the nozzle 11 at a predetermined position on the outer periphery of the second arm portion 36, and an inlet hole 38, which serves as the inlet for the supply pipe 12. The hollow space within the second arm portion 36 is referred to as the intra-arm space 39. Note that FIG. 4A shows a schematic cross-sectional view of the arm member 34 corresponding to FIGS. 3A and 3C. However, for ease of explanation, the thickness of the supply pipe 12 is omitted, and the nozzle is shown in a simplified cross-section using hatching (with the internal structure of the nozzle omitted). The same applies to FIG. 4B. FIG. 4B also shows a schematic cross-sectional view of the arm member 34 corresponding to FIGS. 3B and 3D. In addition, in Fig. 4B, for the sake of convenience, the thickness of the supply pipe 12 is omitted, and the nozzle is shown in a simplified cross section using hatching. Note that in Figs. 3A and 3C, the supply pipe 12 is omitted for the sake of convenience. This also applies to Figs. 3B, 3C, 7A, and 7B.

[0028] The first arm portion 35 and the second arm portion 36 shown here are merely examples, and the structures of the first arm portion 35 and the second arm portion 36 are not limited thereto. That is, the arm member 34 may be any structure as long as the second arm portion 36 is configured to be able to fix the nozzle 11 and the first arm portion 35 is configured to be able to change the position of the second arm portion 36 (to the right or left side of the vehicle body 51). While the examples shown in FIGS. 1, 2A, and 2B depict the first arm portion 35 and the second arm portion 36 as separate bodies, the first arm portion 35 and the second arm portion 36 may be configured as a single body. The second arm portion 36 may be solid, or may be partially hollow. The receiving hole (nozzle position designation hole 60) of the second arm portion 36 is an example of a structure capable of fixing the position of the nozzle. That is, the configuration that can fix the position of the nozzle 11 on the arm member 34 is not limited to the receiving hole (nozzle position designation hole 60). For example, the arm member 34 may be configured so that the position of the nozzle 11 is fixed by fixing the position of the supply pipe 12. Specifically, the arm member 34 may be provided with a structure that fixes the position of the supply pipe 12, and by attaching the nozzle 11 to the supply pipe 12, the nozzle 11 may be fixed to the arm member 34 via the fixation of the supply pipe 12.

[0029] The second arm portion 36 is formed in a shape that extends in the vertical direction, as shown in FIGS. 3A and 3C in the example of FIGS.

[0030] (nozzle) The nozzle 11 is configured to be able to receive the cleaning liquid CS from the supply pipe 12 and to discharge the cleaning liquid CS to the outside. In the example of FIG. 2, a solid line illustrates a case in which the nozzle 11 is not set before the switching structure 31 performs a rightward shifting operation or a leftward shifting operation, which will be described later. Also, in FIG. 2, a dashed line illustrates a case in which the nozzle 11 is set after the rightward shifting operation or the leftward shifting operation, which will be described later. This also applies to FIGS. 17 to 19, etc. In the example of FIG. 1, a dashed line illustrates a case in which the nozzle 11 is not set before the switching structure 31 performs a rightward shifting operation or a leftward shifting operation, which will be described later. Also, in FIG. 1, a solid line illustrates a case in which the nozzle 11 is set after the leftward shifting operation, which will be described later. This also applies to FIG. 8, etc. However, these figures do not exclude a case in which the nozzle 11 is set (connected) to the discharge pipe portion 22 before the switching structure 31 performs a rightward shifting operation or a leftward shifting operation, which will be described later. For example, the example in Figure 16 shows in solid form a case where the nozzle 11 is set in a state before the right-side shift operation or the left-side shift operation described below is performed. For the sake of convenience of explanation, the supply pipe 12 connected to the nozzle 11 and the inlet hole 38 are omitted from Figures 6, 7, and 15.

[0031] The nozzle 11 shown in the examples of FIGS. 1 and 3 includes a base 20 connected to the supply pipe 12 and an emitter 21 attached to the front side of the base 20, as shown in FIGS. 4A and 4C. A receiving port (not shown) for receiving the cleaning liquid supplied from the supply pipe 12 is formed on the bottom side of the base 20 (the side in contact with the supply pipe 12). The emitter 21 has an outlet 21A for discharging the cleaning liquid CS fed from the receiving port. In the example of FIG. 1, the outlet 21A is formed in a circular shape, and a flow path for the cleaning liquid CS is formed in the emitter 21. However, FIG. 1 is an example, and the shape and configuration of the outlet 21A are not limited thereto. In the nozzle 11, the flow path for the cleaning liquid CS in the emitter 21 is preferably formed to rotate in response to the release of the cleaning liquid CS. By configuring the nozzle 11 so that the cleaning liquid CS can be discharged while the outlet 21A for the cleaning liquid CS is rotated, it is possible to perform cleaning over a wider area with a single nozzle 11. It should be noted that nozzle 11 is not limited to the examples shown in Figures 1 and 4. Nozzle 11 may be any nozzle configured to be able to discharge cleaning liquid CS fed from supply pipe 12 to the outside.

[0032] (Right side transition and left side transition) The right-side transition operation is an operation of disposing the nozzle 11 at a position on the right side of the vehicle body 51 (the position on the side of the arrow FP2 in FIG. 2B), and in the example of FIGS. 1 and 2, it is an operation of moving the position of the nozzle 11 to the right side of the vehicle body 51. The left-side transition operation is an operation of disposing the nozzle at a position on the left side of the vehicle body (the position on the side of the arrow FP1 in FIG. 2B), and in the example of FIGS. 1 and 2, it is an operation of moving the position of the nozzle 11 to the left side of the vehicle body 51. Specifically, in the example of FIGS. 1, 2, etc., the right-side transition operation is an operation of rotating the arm member 34 to the right side of the vehicle body 51 around the support column 33 as an axis in accordance with the rotation of the support column 33 (a rotation operation in the direction of the arrow RT in FIG. 1). In this case, the right-side transition operation allows the position of the nozzle 11 to be determined at a position on the right side of the vehicle body 51. 1, 2, and the like, the left side shifting operation is an operation of rotating the arm member 34 to the left side of the vehicle body 51 around the support 33 as an axis in accordance with the rotation of the support 33. In this case, the left side shifting operation allows the nozzle 11 to be positioned on the left side of the vehicle body 51. In FIG. 1, the solid lines indicate the case where the nozzle 11 is shifted to the left side of the vehicle body 51 by the left side shifting operation, and the dashed lines indicate the case where the nozzle 11 is shifted to the left side of the vehicle body 51 by the right side shifting operation. This is also true for FIG. 8. In FIG. 2, the dashed lines indicate both the case where the nozzle 11 is shifted to the left side of the vehicle body 51 by the left side shifting operation and the case where the nozzle 11 is shifted to the left side of the vehicle body 51 by the right side shifting operation, and the solid lines indicate an example of a state before the nozzle is fixed on the right or left side of the vehicle 50. In FIG. 2, the supply pipe 12 is illustrated as being not connected to the pump 13, the bubble generator 15, or the like. 2, the portion of supply pipe 12 that is drawn out to the outside of vehicle 50 when connecting supply pipe 12 to pump 13 or the like is shown by a dashed line. The above explanation regarding the solid dashed lines in FIG. 2 also applies to FIGS. 17, 18, and 19.

[0033] (supply pipe) The supply pipe 12 has a pipe material and forms a flow path FPS that passes through the inside of the pipe material and sends liquid to the nozzle 11. Examples of the liquid that flows inside the supply pipe 12 include the cleaning liquid CS and various liquid components that make up the cleaning liquid CS. The material of the supply pipe 12 is not particularly limited. The material of the supply pipe 12 may be a flexible material (such as a flexible material such as a rubber material) or a hard material that is difficult to bend (a non-flexible material (rigid material)). Examples of rigid materials include metal and plastic.

[0034] (First supply pipe, second supply pipe, and third supply pipe) In the example of Figure 1, the supply pipes 12 include a first supply pipe 12A, a second supply pipe 12B, and a third supply pipe 12C, in that order from those that form the portion of the flow path FPS closest to the liquid supply source 16.

[0035] The third supply pipe 12C is a supply pipe 12 that also connects the pump 13 and the nozzle 11. The third supply pipe 12C is configured to send the cleaning liquid CS sent out from the pump 13 to the nozzle 11. In the example of FIG. 1, as also shown in FIG. 2 and the like, the third supply pipe 12C that is the supply pipe 12 has a discharge pipe section 22 and a relay pipe section 23. The nozzle 11 is connected to the discharge pipe section 22. The third supply pipe 12C is configured to allow the cleaning liquid CS to flow from the discharge pipe section 22 to the nozzle 11. The discharge pipe section 22 is arranged in an arm internal space section 39 of a second arm section 36 of an arm member 34, which will be described later.

[0036] In the example of FIG. 1, the discharge pipe section 22 of the third supply pipe 12C is set in advance inside the second arm section 36, as shown in FIGS. 3 and 4. In FIG. 3, the position of a joint section 24, which will be described later, is indicated by a dashed line. A joint section 24 is provided at the upstream end of the discharge pipe section 22 to secure the downstream end of the relay pipe section 23. The downstream end of the relay pipe section 23 can be connected to the joint section 24 at the upstream end of the discharge pipe section 22. In the examples of FIGS. 1 and 2, the joint section 24 is located at the position of an inlet hole 38 that connects from the outside to an internal space 39 of the second arm section 36. The joint section 24 is preferably formed so that its tip (upstream tip) is located outside the inlet hole 38 (outside the second arm section 36). The discharge pipe section 22 is formed with a connection structure, as will be described later, for connecting the nozzle 11. It is preferable that the connection structure be formed at the position of the nozzle position designation hole 60, as this makes it easy to connect the nozzle 11 to the supply pipe 12 from the outside of the second arm portion 36. An example of the connection structure is an adapter member for connecting the nozzle 11 and the supply pipe 12.

[0037] The joint portion 24 is not limited to being provided in the discharge pipe portion 22, but may also be provided in the relay pipe portion 23. Alternatively, a member corresponding to the joint portion 24 (referred to as a joint member) may be disposed separately, with the upstream end of the discharge pipe portion 22 connected to one end of the joint member, and the downstream end of the relay pipe portion 23 connected to the other end of the joint member.

[0038] In this specification, the concepts of upstream and downstream are defined based on the flow direction of the cleaning liquid CS. In the flow direction of the cleaning liquid CS, the direction away from the liquid supply source 16 is referred to as the downstream direction (downstream side), and the direction opposite to the downstream direction is referred to as the upstream direction (upstream side).

[0039] The relay pipe portion 23 of the third supply pipe 12C is connected to the pump 13 on the upstream side and is connected to a joint portion 24 on the downstream side.

[0040] The first supply pipe 12A and the second supply pipe 12B can function as relay pipes that transport liquid from the liquid supply source 16 toward the discharge pipe section 22 (toward the third supply pipe 12C). The second supply pipe 12B connects the bubble generator 15 to the pump 13 and is configured to guide the cleaning liquid CS generated by the bubble generator 15 to the pump 13. The first supply pipe 12A connects the liquid supply source 16, such as a water source or a tank, to the bubble generator 15 and is configured to transport the liquid (e.g., water) that serves as a raw material for the cleaning liquid CS supplied from the liquid supply source 16 to the bubble generator 15. The first supply pipe 12A, second supply pipe 12B, and third supply pipe 12C shown in FIG. 1 are merely examples, and their functions may be changed or omitted as appropriate depending on the layout of the pump 13, the bubble generator 15, etc. For example, when a device is used that integrates the pump 13, the bubble generator 15, and the liquid supply source 16, the first supply pipe 12A and the second supply pipe 12B can be omitted. Furthermore, in addition to the first supply pipe 12A, the second supply pipe 12B, and the third supply pipe 12C, further supply pipes may be added depending on the layout of the pump 13, the bubble generator 15, etc., or the addition of further devices.

[0041] It is preferable that the second arm portion 36 of the arm member 34 is pre-formed with the discharge pipe portion 22 of the supply pipe (third supply pipe 12C in the examples of FIGS. 1, 3, 4, etc.) arranged from the inlet hole 38 toward the arm internal space portion 39. Furthermore, the nozzle 11 is fitted into the nozzle position designation hole 60, and the supply pipe 12 and the nozzle 11 are connected. The connection of the supply pipe 12 and the nozzle 11 may be performed after the position of the arm member 34 has been determined (after the rightward or leftward movement has been performed), as in FIGS. 1 and 2, or may be performed before the position of the arm member 34 has been determined. The nozzle 11 is formed with a receiving port (not shown) that receives the cleaning liquid supplied from the supply pipe 12. When the cleaning liquid CS flows from the supply pipe 12 while the supply pipe 12 and the nozzle 11 are connected, the cleaning liquid CS travels from the supply pipe 12 through the receiving port and into the nozzle 11. The supply pipe 12 is provided with a connection structure that allows it to be connected to the nozzle 11 at positions corresponding to the positions of the nozzle position designation holes 60. This connection structure is configured to allow the cleaning liquid CS to be injected from the supply pipe 12 into the nozzle 11. In the examples of FIGS. 1, 3, 4, etc., the attachment structure of the supply pipe and nozzle to the arm member is configured so that the nozzle 11 can be connected from the outside of the arm member 34 to the discharge pipe portion 22 of the supply pipe 12 arranged in the internal space of the arm member 34, and the position of the nozzle 11 relative to the arm member 34 can be determined. However, this is just one example, and the attachment structure of the supply pipe and nozzle to the arm member is not limited to the examples of FIGS. 1, 3, 4, etc. For example, the supply pipe 12 may be fixed to the outer circumferential surface of the second arm portion 36.

[0042] In the example of FIG. 1 , multiple nozzles 11 are connected to one supply pipe 12, but this is just one example. Each nozzle 11 may be connected to a different supply pipe 12. In this case, for example, multiple supply pipes 12 connected to the nozzles 11 are connected to the pump 13 (multiple third supply pipes 12C are connected to the pump 13), and a connection structure for the pump 13 and the multiple supply pipes 12 is formed so that the cleaning liquid CS pushed out by the pump 13 flows through each supply pipe 12, thereby allowing the cleaning liquid CS to flow from each supply pipe 12 to the nozzle 11. Furthermore, a valve may be provided to control the amount of cleaning liquid CS flowing through each supply pipe 12. In this case, the amount of cleaning liquid discharged from a specific nozzle 11 can be made different from the amount of cleaning liquid discharged from nozzles 11 located at positions other than that nozzle 11. Note that making the amount of cleaning liquid discharged differently among multiple nozzles 11 can also be achieved when multiple nozzles 11 are connected to one supply pipe 12. For example, by providing a valve for controlling the flow rate at the connection point between the nozzle 11 and the supply pipe 12, it is possible to control the amount of cleaning liquid discharged from each valve.

[0043] (pump) In the example of FIG. 1, the pump 13 is arranged so that the cleaning liquid CS flows from the bubble generator 15 toward the nozzle 11. The structure of the pump 13 is not particularly limited. In FIG. 1, reference numeral 14 denotes a drive source for driving the pump 13. When the pump is driven by electricity, a power supply device can be used as the drive source 14. The power supply device serving as the drive source 14 is electrically connected to the pump 13, thereby driving the pump 13. When the drive source 14 is located outside the vehicle 50, the external drive source 14 and the pump 13 may be connected. When the drive source 14 is mounted on the vehicle 50, the mounted drive source may be connected to the pump 13. The fact that reference numeral 14 denotes a drive source is the same in FIGS. 2 to 20.

[0044] (liquid source) The supply source of the liquid that is the raw material for the gas-liquid mixture (referred to as liquid supply source 16) is not particularly limited, and examples thereof include a liquid storage tank (tank) that stores the liquid, a water supply, etc. In the example of Fig. 1, a tank 17 is installed as the liquid supply source 16. The tank 17 may be installed in a vehicle 50.

[0045] (cleaning solution) The cleaning liquid CS is a gas-liquid mixture containing bubbles with a diameter of 1 μm or less, or a liquid having a gas-liquid mixture.

[0046] (Gas-liquid mixture) At least some of the bubbles contained in the gas-liquid mixture have a bubble diameter of less than 1 μm (the average bubble diameter of at least some of the bubbles is less than 1 μm), but it is preferable that all of the bubbles are less than 1 μm (the average bubble diameter of all bubbles generated is less than 1 μm). Bubbles with a bubble diameter of 100 μm or less are sometimes referred to as fine bubbles, bubbles between 1 μm and 100 μm are sometimes referred to as microbubbles, and bubbles with a diameter of less than 1 μm are sometimes referred to as ultrafine bubbles or nanobubbles. The term "fine bubbles" is used as a term that encompasses both microbubbles and ultrafine bubbles. It is preferable that at least some of the bubbles generated in the gas-liquid mixture are ultrafine bubbles. For example, in the example of FIG. 1, at least some of the bubbles contained in the liquid flowing through the flow path FPS formed in the supply pipe 12 are ultrafine bubbles. The gas-liquid mixture is in a state in which ultrafine bubbles are dispersed in the liquid. This does not exclude the inclusion of bubbles other than ultrafine bubbles in the gas-liquid mixture, and the gas-liquid mixture may also include microbubbles and the like.

[0047] (Components in bubbles) The gas component in the bubbles is not particularly limited, and may be a gas taken into the bubbles from the outside, or a gasifiable component dissolved in the liquid fed to the bubble generating device. For example, in the case where the liquid is water, examples of the gasifiable component dissolved in the liquid include dissolved carbon dioxide dissolved in the water, oxygen (dissolved oxygen), and nitrogen (dissolved nitrogen) dissolved in the water.

[0048] (bubble diameter) The bubble diameter refers to the diameter of the bubbles. The average bubble diameter refers to the average value of the bubble diameters. The average bubble diameter can be determined from the bubble size distribution. The average bubble diameter of some bubbles can be determined from the bubble size distribution. The bubble diameter can be determined when measuring the bubble size distribution. The bubble size and average bubble diameter can be determined using a technique for measuring the bubble size distribution (particle size distribution) of bubbles contained in a gas-liquid mixture. An example of a technique for measuring the bubble size distribution (particle size distribution) is a method using a laser diffraction / scattering particle size distribution measuring device. Methods for determining the bubble size distribution include particle size analysis (particle tracking analysis) in accordance with JIS Z 8829:2021.

[0049] (Bubble concentration) Bubble concentration in gas-liquid mixture (pcs / cm 3 ) is not particularly limited, but from the viewpoint of maintaining the cleaning effect of bubbles in the mixed liquid to some extent, the bubble concentration of bubbles smaller than 1 μm in the gas-liquid mixed liquid is set to 20 million / cm 3 Preferably, it is 50 million particles / cm or more. 3 More preferably, it is 60 million particles / cm 3 It is more preferable that the liquid contains 20 million bubbles per cm that are smaller than 1 μm. 3 If the gas-liquid mixture is above this level, it can exert its anti-fouling effect, and the number of bubbles with a diameter of less than 1 μm is 50 million / cm. 3If the amount is more than this, it can effectively clean biofilms (aggregates formed on solid surfaces by microorganisms, etc.), and the number of bubbles with a diameter of less than 1 μm is 60 million / cm. 3 Since the bubble concentration of the mixed liquid can be increased to the same level as the bubble concentration of the gas-liquid mixed liquid, the effects obtained when the gas-liquid mixed liquid satisfies the above-mentioned bubble concentration range can also be achieved in the mixed liquid.

[0050] The upper limit of the bubble concentration of the gas-liquid mixture is not particularly limited, but from the viewpoint of easiness of stable generation of bubbles, the upper limit of the bubble concentration of the gas-liquid mixture is set to 5 billion bubbles / cm. 3 The bubble concentration can be determined using the method exemplified above as a method for determining the bubble diameter or average bubble diameter of the bubbles.

[0051] (Potential of the bubble) The bubbles contained in the gas-liquid mixture preferably have a negative potential. When the bubble generation device 15 described below is a cavitation-type bubble generation device (e.g., the bubble generation device 100), the negatively charged state of the bubbles can be achieved depending on the magnitude of static electricity caused by cavitation in the liquid fluid in the liquid flow path of the bubble generation device 100 and friction of the fluid in the flow path (friction between the bubbles and the components forming the flow path). The magnitude of the negative potential can be determined depending on various conditions, such as the diameter of the bubbles.

[0052] (Production of gas-liquid mixture) As described above, the gas-liquid mixture can be produced by passing a liquid component, which is a raw material for the gas-liquid mixture, such as water, through a gas bubble generator.

[0053] (Bubble generating device) The bubble generator 15 generates a gas-liquid mixture containing bubbles with a diameter of 1 μm or less in the liquid. This gas-liquid mixture or a liquid containing the gas-liquid mixture can function as a cleaning liquid.

[0054] (Arrangement of bubble generator) The bubble generator 15 is provided in the flow path FPS in a portion of the flow path from the liquid supply source 16 to the pump 13, but the arrangement of the bubble generator 15 is not limited to this. The bubble generator 15 may also be provided in the flow path FPS in a portion of the flow path from the pump 13 to the nozzle 11. Furthermore, when a tank 17 for storing liquid is provided as the liquid supply source 16, the bubble generator 15 may be arranged so that the liquid stored in the tank 17 becomes a gas-liquid mixture that has passed through the bubble generator 15.

[0055] (Configuration of the bubble generating device) The configuration of the bubble generator 15 is not particularly limited. The bubble generator may be configured to generate fine bubbles, such as ultrafine bubbles, in a liquid and form a gas-liquid mixture in which the bubbles are dispersed in the liquid. Examples of such bubble generators include devices that employ various bubble generation mechanisms as needed, such as cavitation, micropore, ultrasonic, swirling flow, static mixer, Venturi, vapor condensation, pressurized dissolution, and gas-liquid mixed shearing.

[0056] However, from the viewpoint of efficiently generating fine bubbles such as ultrafine bubbles having a negative potential as the bubbles contained in the gas-liquid mixture, it is preferable to adjust the gas-liquid mixture using a cavitation-type device as the bubble generator 15. As the cavitation-type device, a device such as that shown in the following "Example of a bubble generator" can be used. Next, as an example of the bubble generator 15, an example of a cavitation-type bubble generator 100 will be described with reference to Figures 5A to 5D.

[0057] (An example of a bubble generator) As shown in FIGS. 5A to 5D, the bubble generation device 100 includes a receiving section 110 that receives a liquid component (referred to as a raw material liquid) as a raw material, a bubble generation mechanism 120 that generates a gas-liquid mixture in which gas bubbles are dispersed in the raw material liquid supplied from the receiving section 110, and a discharge section 130 that discharges the gas-liquid mixture. FIGS. 5A to 5D are diagrams for explaining one embodiment of the bubble generation device. FIG. 5D is a schematic enlarged cross-sectional view showing an enlarged portion of the region SP enclosed by the dashed line in FIG. 5C. When the bubble generation device 100 is applied as the bubble generation device 15 shown in the example of FIG. 1, the raw material liquid is the liquid flowing through the flow path FPS. The gas-liquid mixture flowing out of the discharge section 130 further flows from the supply pipe 12 toward the pump 13.

[0058] (Bubble generation mechanism) The bubble generation mechanism 120 has a flow path forming body 121 and multiple collision bodies 124. The flow path forming body 121 forms a liquid flow path 122 on its inner circumferential surface 121A side and has a throttle structure 123. The throttle structure 123 has a first portion 123A having a portion where the cross-sectional diameter of the inner circumferential surface 121A (the cross-sectional diameter determined by a cross section cut by an imaginary plane normal to the longitudinal direction of the liquid flow path 122) decreases from an upstream end 125 (inlet) to a downstream end 126 (outlet), and a second portion 123B having a portion where the cross-sectional diameter of the inner circumferential surface 121A increases from the upstream end 125 to the downstream end 126. The first portion 123A is located upstream of the second portion 123B. The multiple collision bodies 124 protrude inward from the inner circumferential surface 121A of the flow path forming body 121 and are adjacent to each other with a segment region 150 sandwiched between them. The plurality of collision bodies 124 are disposed at positions between (or at the boundary between) the first portion 123A and the second portion 123B in the longitudinal direction of the liquid flow path 122. However, this does not prohibit the formation of the plurality of collision bodies 124 in either the first portion 123A or the second portion 123B. A segment region 150 refers to a region of the cross section of the inner circumferential surface 121A that is divided by collision bodies 124 adjacent to each other in the circumferential direction of the inner circumferential surface 121A. The plurality of collision bodies 124 are disposed so as to form gaps 151 that narrow the flow path between their tips. Furthermore, the bubble generation mechanism 120 is configured so that the flow path formation body 121 can pass the raw material liquid from the upstream end 125 to the downstream end 126. As described above, it is preferable that a pump (not shown) for supplying raw material liquid is installed upstream and / or downstream of the bubble generation device 100. This pump supplies the raw material liquid to the air bubble generator 100 so that the water pressure, flow rate, and amount of the raw material liquid are each equal to or greater than predetermined values. In the air bubble generator 100, the concentration of fine bubbles (microbubbles, ultrafine bubbles, etc.) generated varies depending on the pressure, flow rate, and flow rate of the liquid flowing through the liquid flow path 122. In the air bubble generator 100, by increasing at least one of the pressure, flow rate, and flow rate of the liquid, it is possible to generate a high concentration of fine bubbles in the liquid.

[0059] (Production of gas-liquid mixture) Using the bubble generation device 100, a bubble mixture is obtained as follows. Raw material liquid is injected as a liquid fluid into the receiving section 110 of the bubble generation device 100. The receiving section 110 is connected to the upstream end 125 (inlet) of the bubble generation mechanism 120, and the raw material liquid flows into the bubble generation mechanism 120 from the upstream end 125. In the bubble generation mechanism 120, the raw material liquid moves through the first section 123A of the throttle structure 123 in a direction generally from the upstream end 125 toward the downstream end 126 (the direction of arrow LF), thereby increasing the flow rate. The raw material liquid moves to a gap 151 formed at the position where the impactor 124 is disposed, and a portion of the raw material liquid further advances through the gap 151 toward the downstream end 126. At this time, a portion of the raw material liquid moves from the segment region 150 toward the downstream end 126, preventing an excessive increase in fluid resistance in the throttle structure 123, thereby enhancing the negative pressure generation effect. As part of the raw material liquid passes through the gap 151, a cavitation effect occurs in the raw material liquid, causing components dissolved in the raw material liquid (e.g., dissolved oxygen) to turn into bubbles. The size of the bubbles, that is, the size of the gap 151, is adjusted depending on conditions such as the structure of the collision body 124. In this way, a gas-liquid mixture is generated as a liquid in which bubbles having a desired bubble diameter are dispersed in the raw material liquid. The generated gas-liquid mixture can flow out from the downstream end 126 via the discharge part 130.

[0060] The bubbles dispersed in the gas-liquid mixture obtained by the gas bubble generator 100 are formed by cavitation occurring in the raw material liquid as described above, and are gasified components that accompany the cavitation of components dissolved in the raw material liquid. Such bubbles contain vaporized oxygen (dissolved oxygen) and vaporized nitrogen (dissolved nitrogen) that were dissolved in the water that constitutes the raw material liquid. The gas components in the bubbles may be determined depending on the effect desired from the gas-liquid mixture. For example, if the gas-liquid mixture is desired to have a biofilm removal effect, it is preferable that the oxygen component in the bubbles be small. In order to further enhance the desired effect, it is preferable that the gas bubble generator 100 be equipped with a gas supply structure.

[0061] The bubble generation device 100 shown in FIG. 5 may be provided with a gas supply structure (not shown) that introduces gas from the outside into the liquid flow path 122 depending on the desired effect of the gas-liquid mixture, as described above. The provision of a gas supply structure as needed is the same when the bubble generation device 100 is used as the bubble generation device 15. When the bubble generation device 100 is provided with a gas supply structure that introduces a gas (e.g., nitrogen, carbon dioxide, etc.) from the outside into the liquid flow path 122, the supplied gas flows toward the downstream end 126 in the form of bubbles in the raw material liquid at the introduced position, in line with the flow of the raw material liquid. Furthermore, bubbles formed by the gas supplied to the raw material liquid via the gas supply structure are finely divided in the gap portion 151 and the segment region 150 due to collisions between the collision body 124 and the bubbles, and further refined into bubbles with a diameter of, for example, less than 1 μm.

[0062] (Installation and operation of cleaning system) The washing system 10 can be installed as follows. For example, when using the washing system 10 at a predetermined location, the vehicle 50 is driven to the predetermined location where a washing area can be secured. Based on the conditions of the predetermined location, the vehicle 50 is quickly parked in a position on either the left or right side of the vehicle 50 to secure enough space for the moving body MB to pass through for washing. The left and right sides are determined by the switching structure 31, and the first arm unit 35 is positioned on at least one of the right and left sides of the vehicle body 51. This can be achieved by fixing the arm member 34 of the support structure 32 in a rotated state in a predetermined direction. Thereafter, the second arm unit 36 ​​having the nozzle 11 is attached to the first arm unit 35. Note that it is preferable that the nozzle 11 be fixed to the second arm unit 36 ​​in advance and that the nozzle 11 and the discharge pipe unit 22 be connected from the perspective of enabling agile setup (from the perspective of quickly installing the washing system 10 at the installation location). However, this does not prohibit the work of attaching the nozzle 11 to the second arm unit 36 ​​from being performed at the installation location. Even in such a case, the switching structure 31 allows the arm member 34 to be installed quickly, and therefore it is possible to obtain the effect of setting up flexibly.

[0063] When the second arm unit 36 ​​has been attached to the first arm unit 35, the nozzle 11 of the second arm unit 36 ​​is arranged so that the liquid discharge direction of the nozzle 11 faces outward from the vehicle body 51. The position of the nozzle 11 is determined so that at least a portion of the cleaning liquid CS discharged from the nozzle 11 can come into contact with the moving body MB.

[0064] 1, the second arm unit 36 ​​may be attached to the first arm unit 35 in advance. The second arm unit 36 ​​is mounted on the vehicle 50.

[0065] In the example shown in FIG. 1 , the second arm portion 36 is composed of a base arm body 40, which will be described later. When the arm member 34 of the support structure 32 is rotated in a predetermined direction, the base arm body 40 is disposed on at least one of the right and left sides of the vehicle body 51. The downstream end of the relay pipe portion 23 of the supply pipe 12 is connected to the joint portion 24 of the discharge pipe portion 22 of the supply pipe 12 from the outside of the arm member 34 at the position of the inlet hole 38. If necessary, the supply pipes 12 (first supply pipe 12A and second supply pipe 12B) are disposed so that the cleaning liquid CS flows from the liquid supply source 16 to the nozzle 11. If the supply pipes 12 are already connected to the liquid supply source 16, the bubble generator 15, and the pump 13, it may be unnecessary to dispose the supply pipes 12 so that the cleaning liquid CS flows from the liquid supply source 16 to the nozzle 11.

[0066] With the cleaning system 10 assembled as described above, the pump 13 is operated. As shown in Fig. 1, with the cleaning liquid being discharged from the nozzle 11, the moving body MB passes by.

[0067] In this way, with the cleaning system 10, it is possible to easily and quickly position the arm member 34 and install the supply pipe 12 (achieving rapid installation of the cleaning system). Furthermore, with the cleaning system 10, the location for positioning the arm member 34 and installing the supply pipe 12 can be determined by determining the location for parking the vehicle 50 depending on the cleaning location, thereby increasing the freedom of selection of the cleaning location.

[0068] In the washing system 10 shown in the example of FIG. 1, a moving object MB moves along the side of a vehicle body 51. As the moving object MB passes beside the second arm unit 36, as shown in FIG. 6A, the moving object MB receives the washing liquid CS discharged from the nozzle 11 of the second arm unit 36. This removes dirt adhering to the moving object MB. FIG. 6A is a diagram illustrating the state in which the washing system 10 washes the moving object MB.

[0069] (Relative movement between vehicle and moving object) In the example of FIG. 1 , the moving object MB moves in the direction of arrow F on the moving path PA along the side of the vehicle body 51, but the relative movement between the vehicle 50 and the moving object MB is not limited to this. That is, in the cleaning system 10, at least one of the vehicle 50 and the moving object MB may move. For example, the moving object MB may be stopped at a predetermined position, and the second arm unit 36 ​​of the arm member 34 connected to the support 33 of the vehicle body 51 may be moved so that it passes beside the moving object MB. In this case, as the second arm unit 36 ​​passes beside the moving object MB, the cleaning liquid CS is sprayed onto the moving object MB from the nozzle 11, the position of which is determined by the second arm unit 36 ​​connected to the moving vehicle 50. This removes dirt adhering to the moving object MB.

[0070] (Mobile) The mobile object MB that can be cleaned using the cleaning system of the present invention is not particularly limited, and specific examples of the mobile object MB include transport vehicles, pickup trucks, armored vehicles, buses, and wheeled armored vehicles.

[0071] [Action and effect of cleaning system] The washing system according to the present invention includes a vehicle 50 equipped with a positioning mechanism 30. The vehicle 50 can be positioned according to the conditions of the location where the moving object MB (to be washed) is to be washed, and the determined location can be used as the washing location. Therefore, the present invention allows for greater flexibility in selecting the washing location, i.e., a washing system can be created that can accommodate the conditions of the location. For example, when washing a vehicle used in rescue operations in a disaster area such as an earthquake or typhoon, the washing must be performed quickly and in a location that is less likely to be affected by debris or disrupt the lives of evacuees, while minimizing the consumption of resources (such as water) in the disaster area. Therefore, many restrictions are imposed on the washing location, etc. However, according to the washing system 10 according to the present invention, even in cases where there are many restrictions on the washing location, the switching structure 31 allows the location for washing the moving object MB to be set on either the left or right side of the vehicle 50, even if the location where the vehicle 50 is parked can be freely determined, and washing of the moving object MB can be performed. Furthermore, in the cleaning system 10 according to the present invention, the switching mechanism 31 allows the cleaning system 10 to be set up quickly (mobilely), enabling effective cleaning of the mobile object MB even in situations where every second counts, such as rescue operations. Furthermore, in the cleaning system 10 according to the present invention, the cleaning liquid CS is a gas-liquid mixture containing bubbles with a diameter of 1 μm or less, or contains the gas-liquid mixture. This improves cleaning efficiency and allows cleaning of the mobile object with a relatively small amount of cleaning liquid. Therefore, the cleaning system 10 according to the present invention eliminates the need for large-scale facilities for producing large amounts of cleaning liquid, allowing a variety of locations to be used as cleaning sites. Being able to clean the mobile object with a relatively small amount of cleaning liquid is particularly advantageous in situations where it is necessary to minimize resource consumption (such as in disaster areas) such as those described above.

[0072] [Modification of cleaning system] (Variation 1) In the cleaning system 10 according to the present invention, the second arm portion 36 of the support structure 32 to which the nozzle 11 is attached is formed in a shape that extends in the vertical direction above the position of the loading platform surface 54, as shown in Figures 3A and 3C in the examples of Figures 1 and 2, but the structure of the second arm portion 36 is not limited to this and may have a structure different from the structure shown in Figures 3A and 3C. This form is referred to as Variation 1.

[0073] (Second arm part) In a first variation of the cleaning system, for example, as shown in FIGS. 3B, 3D, and 4B, the second arm unit 36 ​​may have a base arm body 40 fixed to the first arm unit 35 and extending in the vertical direction, and an upper extension arm body 41 connected to the upper end of the base arm body 40. In the example of the first variation shown in FIGS. 3B, 3D, and 4B, the base arm body 40 is formed in a rod shape and extends above the position of the loading platform surface 54, and the upper extension arm body 41 is connected to the upper end of the base arm body 40 and formed in an L-shape. In the example shown in FIGS. 3B, 3D, and 4B, both the base arm body 40 and the upper extension arm body 41 are hollow. The base arm body 40 and the upper extension arm body 41 are provided with a nozzle position designation hole 60 as a hole for determining the position of the nozzle 11 at a predetermined position on the periphery. For both the base arm body 40 and the upper extension arm body 41, the hollow space inside the base arm body 40 and the upper extension arm body 41 is referred to as the intra-arm space 39. The same applies to the hollow space inside the lower extension arm body 42, which will be described later, as the intra-arm space 39. The base arm body 40 is provided with an inlet hole 38, similar to that shown in Figure 1, into which the supply pipe 12 can be inserted. The intra-arm space 39 of the base arm body 40 is connected to the intra-arm space 39 of the upper extension arm body 41, allowing the supply pipe 12 to be continuously connected from the base arm body 40 to the upper extension arm body 41.

[0074] The shape of the upper extension arm body 41 is L-shaped in the examples of Figures 3B and 4B, but this is just one example. The shape may be determined according to various conditions such as the shape of the moving body. For example, it may be formed in a stepped shape as shown in Figure 7B. Furthermore, the upper extension arm body 41 may be formed integrally and continuously with the upper end of the base arm body 40.

[0075] In the cleaning system 10 according to the present invention, the second arm unit 36 ​​of the support structure 32 may have a base arm body 40 fixed to the first arm unit 35 and extending vertically above the loading platform surface 54, and a lower extension arm body 42 connected to the lower end of the base arm body 40 and extending vertically. As shown in FIGS. 3B, 3D, and 4B, an arm fixing base 43 may be provided at the lower end of the lower extension arm body 42. The bottom surface of the arm fixing base 43 is grounded (the bottom surface of the arm fixing base 43 is in contact with the ground surface), and the upper surface of the arm fixing base 43 is connected to the lower end of the lower extension arm body 42. The lower end of the lower extension arm body 42 may also be in direct contact with the ground surface. The lower extension arm body 42 shown in the example of FIG. 3B is hollow, similar to the base arm body 40, and is provided with a nozzle position designation hole 60. A supply pipe 12 is also disposed on the lower extension arm body 42, and a nozzle 11 is provided at a predetermined position. The supply pipe 12 is also connected to the nozzle 11 fixed to the lower extension arm body 42. By attaching the lower extension arm body 42 to the lower end of the base arm body 40 and having the lower end of the lower extension arm body 42 contact the ground surface directly or via the arm fixing base 43, it is possible to more firmly restrict the vertical movement of the second arm unit 36 ​​and the rotational movement of the second arm unit 36 ​​about the support column 33 as the rotation axis. Note that the second arm unit 36 ​​may have a structure in which the lower extension arm body 42 is formed integrally and continuously with the lower end of the base arm body 40. In this case, it is preferable that the second arm unit 36 ​​be fixed to the first arm unit 35 after the first arm unit 35 has rotated by the rightward shifting movement and the leftward shifting movement.

[0076] In the example of Figure 3B etc., both the upper end extension arm body 41 and the lower end extension arm body 42 are provided, but either one may be provided (either the upper end extension arm body 41 or the lower end extension arm body 42 may be omitted).

[0077] (supply pipe) Of the supply pipe 12 (third supply pipe 12C in FIG. 1, etc.), the discharge pipe section 22 connected to the nozzle 11 may be disposed in the arm inner space 39 of the second arm section 36, as shown in FIG. 3B, FIG. 4B, etc. In the example shown in FIG. 3B, FIG. 4B, etc., the discharge pipe section 22 includes a first discharge pipe section 22A, a second discharge pipe section 22B, and a third discharge pipe section 22C.

[0078] The first discharge pipe section 22A is disposed in the arm intra-space section 39 at the base arm body 40. The second discharge pipe section 22B is disposed in the arm intra-space section 39 at the upper extension arm body 41. The third discharge pipe section 22C is disposed in the arm intra-space section 39 at the lower extension arm body 42. A nozzle 11 is connected to each of the first discharge pipe section 22A, the second discharge pipe section 22B, and the third discharge pipe section 22C.

[0079] Joint portions 28 and 29 are provided at the upper and lower ends of the first discharge pipe portion 22A, and the second discharge pipe portion 22B is connected to the joint portion 28. The third discharge pipe portion 22C is connected to the joint portion 29. The structure of the joint portion 28 is not particularly limited as long as it is a structure that allows the second discharge pipe portion 22B to be connected to the first discharge pipe portion 22A. The structure of the joint portion 29 is not particularly limited as long as it is a structure that allows the third discharge pipe portion 22C to be connected to the first discharge pipe portion 22A. The joint portions 28 and 29 are not limited to being provided on the first discharge pipe portion 22A. The structure of the joint portion 28 may be provided on the second discharge pipe portion 22B. A joint member having the structure of the joint portion 28 may be interposed between the first discharge pipe portion 22A and the second discharge pipe portion 22B. The structure of the joint portion 29 may be provided in the third discharge pipe portion 22C. A joint member having the structure of the joint portion 29 may be interposed between the first discharge pipe portion 22A and the third discharge pipe portion 22C.

[0080] (Installation and operation of cleaning system) The installation of the first variation of the washing system will be described using the examples shown in Figures 3B and 4B as an example. The first variation of the washing system can be installed in the same manner as the washing system 10 described above. That is, the vehicle 50 is parked in a predetermined location. The left and right sides are determined using the switching structure 31, and the base arm body 40 of the second arm unit 36 ​​is attached to at least one of the right and left sides of the vehicle body 51. With the position of the base arm body 40 determined, the upper extension arm body 41 is connected to the upper side of the base arm body 40. At this time, the first discharge pipe section 22A and the second discharge pipe section 22B are also connected. The lower extension arm body 42 is also connected to the lower side of the base arm body 40. At this time, the first discharge pipe section 22A and the third discharge pipe section 22C are also connected. If necessary, an arm fixing base 43 is installed at the lower end of the lower extension arm body 42. The bottom side of the arm fixing base 43 is grounded, and the upper side of the arm fixing base 43 supports the lower end of the lower extension arm body 42. It is preferable that the base arm body 40, the upper extension arm body 41, the lower extension arm body 42, and the arm fixing base 43 are loaded onto the vehicle 50 before the cleaning system 10 is installed.

[0081] This is how installation of the cleaning system 10 is achieved. As described above, according to the first modification of the cleaning system 10, it is possible to easily and quickly position the arm member 34, install the supply pipe 12, and install the nozzle 11. Furthermore, according to the first modification of the cleaning system as described above, by determining the location for parking the vehicle 50 depending on the cleaning location, the locations for positioning the arm member 34, installing the supply pipe 12, and installing the nozzle 11 are determined, thereby increasing the freedom of selection of the cleaning location.

[0082] According to the first modification of the cleaning system, as shown in FIG. 6B, it is possible to spray the cleaning liquid CS over a wider range of the moving body MB, thereby enabling more effective cleaning.

[0083] (Variation 2) In the cleaning system 10 according to the present invention, the second arm unit 36 ​​may be formed in an arch shape, as shown in FIG. 7A. This configuration is referred to as Modification 2. In the example of Modification 3 shown in FIG. 7A, the second arm unit 36 ​​is preferably formed in a shape that allows it to face the upper side of the top surface of the movable body MB and the left and right side surfaces of the movable body MB. This can be achieved by adopting the shape shown in FIG. 7A as the shape of the upper extension arm body 41, and by forming the upper extension arm body 41, the lower extension arm body 42, and the base arm body 40 into an arch shape as a whole. The upper extension arm body 41 shown in FIG. 7A is connected at one end to the base arm body 40, and an arm fixing base 43 is provided at the other end.

[0084] (Variation 3) As shown in Figures 8, 9A, and 9B, the cleaning system 10 according to the present invention may include a bottom cleaning mechanism 65 configured to fix the nozzle 11 in a position on the bottom side of the movable body MB so that the cleaning liquid CS can be released from the nozzle 11. This configuration is referred to as Modification 3. Figure 8 is a plan view schematically showing an example of Modification 3 of the cleaning system. Figure 9A is a side view schematically showing an example of Modification 3 of the cleaning system. Figure 9B is a cross-sectional view schematically showing an enlarged portion corresponding to the longitudinal section taken along line A2-A2 in Figure 8.

[0085] (Bottom cleaning mechanism) In the example of Modification 3 shown in FIGS. 8, 9A, and 9B, the bottom cleaning mechanism 65 includes a fixing structure 66 that is disposed on the bottom side of the movable body MB and fixes the nozzle 11. The nozzle 11 can be the same as that described above. The position of the nozzle 11 is fixed to the fixing structure 66 with the outlet 21A, which discharges the cleaning liquid CS, facing upward. The nozzle 11 may be directly fixed to the fixing structure 66, or the nozzle 11 may be indirectly fixed by fixing a supply pipe 12. A supply pipe 12 is connected to the nozzle 11, and the cleaning liquid CS (gas-liquid mixture) sent from the pump 13 passes through the supply pipe 12 and is discharged from the outlet 21A of the nozzle 11 toward the bottom side of the movable body MB. The supply pipe 12 connected to the nozzle 11 fixed to the fixing structure 66 is not particularly limited as long as it is configured to be able to discharge the gas-liquid mixture from the nozzle 11 toward the bottom side of the movable body MB. The fixing structure 66 shown in FIG. 9B has a space 67 therein and a hole 68 configured to allow the supply pipe 12 to pass between the outside and the space 67. The space 67 is configured to allow the supply pipe 12 to be disposed therein. The supply pipe 12 disposed in the space 67 is connected to the nozzle 11, allowing the cleaning liquid CS to be fed from the supply pipe 12 to the nozzle 11. Note that the supply pipe 12 inserted into the space 67 of the fixing structure 66 may be any pipe disposed so as to allow the cleaning liquid CS to be fed thereto. In the example of FIG. 8, the supply pipe 12 connected to the nozzle 11 fixed to the fixing structure 66 is a pipe (fourth supply pipe 12D) branched from the third supply pipe 12C at a branching portion 18. Note that a branch joint or the like can be used as the branching portion 18.

[0086] (supply pipe) The first supply pipe 12A to the second supply pipe 12B may have the same configuration as the first supply pipe 12A to the second supply pipe 12B described above with reference to Figure 1 etc., and therefore a detailed description thereof will be omitted. Also, the third supply pipe 12C shown in the examples of Figures 8 and 9 may have the same configuration as the third supply pipe 12C described above with reference to Figure 1 etc., except for the configuration of the branching portion 18, and therefore a detailed description thereof will be omitted.

[0087] The supply pipe 12 (fourth supply pipe 12D) connected to the nozzle 11 fixed to the fixing structure 66 has a discharge pipe section 25 connected to the nozzle 11, and a relay pipe section 26 connected to the discharge pipe section 25 and for flowing the cleaning liquid CS into the discharge pipe section 25. The discharge pipe section 25 is disposed in the space section 67 and connected to the nozzle 11 at a predetermined position of the discharge pipe section 25. A joint section 27 is provided on the upstream end side of the discharge pipe section 25, and the downstream end of the relay pipe section 26 is connected to the joint section 27. The joint section 27 may be provided on the downstream end side of the relay pipe section 26. A joint member corresponding to the joint section 27 may be interposed between the discharge pipe section 25 and the relay pipe section 26.

[0088] (Installation of bottom cleaning mechanism in cleaning system) 8 and 9, etc., the installation of the bottom cleaning mechanism 65 will be described. The fixing structure 66 is installed in a predetermined position. The discharge pipe section 25 is arranged in a space 67 of the fixing structure 66. It is also preferable that the nozzle 11 is also attached to the fixing structure 66 in advance and connected to the discharge pipe section 25. The relay pipe section 26 is connected to the joint section 27 of the discharge pipe section 25 arranged on the fixing structure 66. In this way, the bottom cleaning mechanism 65 is installed in a predetermined position.

[0089] As described above, according to the second modification of the cleaning system, in addition to positioning the arm member 34, installing the supply pipe 12, and installing the nozzle 11, the bottom cleaning mechanism 65 can also be installed easily and quickly. Therefore, according to the second modification of the cleaning system, the bottom of the mobile body MB can be cleaned easily and quickly. Furthermore, as described above, according to the second modification of the cleaning system, by determining the location for parking the vehicle 50 and the location for arranging the fixing structure 66 according to the cleaning location, the locations for positioning the arm member 34, installing the supply pipe 12, and installing the nozzle 11, and the location for installing the bottom cleaning mechanism 65 can be determined, thereby increasing the freedom of selection of the cleaning location.

[0090] (Variation 4) In the washing system 10 according to the present invention, the pump 13 may be provided in the vehicle 50, as shown in Fig. 10A. This configuration is referred to as washing system variant 4. According to washing system variant 4, by providing the pump 13 in the vehicle 50, when multiple vehicles are used in the washing system, it becomes easy to control the force of the washing liquid released from the nozzle attached to the supply pipe fixed by the vehicle's positioning mechanism for each vehicle.

[0091] In a fourth modification of the washing system 10 according to the present invention, a bubble generation device 15 may be further provided on the vehicle 50, as shown in FIG. 10B. FIG. 10B is a diagram for explaining an example of the fourth modification of the washing system. In addition, in the washing system according to the present invention, the pump 13, the bubble generation device 15, and the liquid supply source 16 may be provided on the vehicle 50, as shown in FIG. 11. FIG. 11 is a diagram for explaining an example of a sixth modification of the washing system 10. A tank 17 is provided as the liquid supply source 16. According to the fifth modification of the washing system, the pump 13, the bubble generation device 15, and the liquid supply source 16 are provided on the vehicle, so that the vehicle 50 can be placed in a predetermined position and the nozzle 11 can be configured to spray liquid onto the moving body MB, thereby forming a washing system.

[0092] (Variation 5) In the washing system according to the present invention, there is no limit to the number of vehicles installed; it may be one vehicle as shown in the example of FIG. 1, or multiple vehicles may be provided as shown in FIGS. 12 and 13. This type of configuration is referred to as washing system variation 7. FIGS. 12 and 13 are each plan views for explaining an example of washing system variation 5. FIGS. 12 and 13 show an example of application of washing system variation 5 to washing system variation 5, using as an example the case where "vehicle 50 is provided with pump 13" described in washing system variation 4.

[0093] (Example 1) 12, the vehicles 50 are arranged on either the left or right side of the moving object MB, in this case aligned along the moving direction of the moving object MB.

[0094] (Example 2) In the example of FIG. 13, multiple vehicles 50 are arranged on both the left and right sides of the moving body MB. The longitudinal position (position along the direction of movement of the moving body MB) of the vehicle 50 arranged on the left side of the moving body MB and the longitudinal position of the vehicle 50 arranged on the right side of the moving body MB may be aligned or offset. Furthermore, the first and second examples described above may be combined. For example, multiple vehicles 50 may be arranged on the left side of the moving body MB as described in the first example, and a single vehicle 50 may be arranged on the right side of the moving body MB. Multiple vehicles 50 may be arranged on the right side of the moving body MB as described in the first example, and a single vehicle 50 may be arranged on the left side of the moving body MB. Multiple vehicles 50 may be arranged on both the right and left sides of the moving body MB as described in the first example.

[0095] 12 and 13 show an embodiment in which the second arm unit 36 ​​of the multiple vehicles 50 is composed of a base arm body 40, but this is merely an example. For example, as shown in FIGS. 14 and 15, the second arm unit for multiple vehicles may have a base arm body 40 and an upper extension arm body 41 as described in Modification 1. In this case, it is possible to clean the left and right side surfaces and the top surface of the movable body MB simply by moving the movable body MB in one direction. Furthermore, from the perspective of being able to clean the left and right side surfaces of the movable body MB over a wider area, it is preferable that the second arm unit further has a lower extension arm body 42, as shown in FIG. 15. FIG. 14 is a plan view schematically showing an embodiment of Modification 5 of the cleaning system. FIG. 15 is a front view schematically showing an embodiment of Modification 5 of the cleaning system.

[0096] (Variation 6) In the washing system 10 according to the present invention, the positioning mechanism 30 may be provided at multiple different positions on the vehicle body 51. That is, in the washing system 10 according to the present invention, the number of support structures 32 installed on one vehicle 50 is not limited. As shown in the example of FIG. 1, one support structure 32 may be provided, but as shown in FIGS. 16A and 16B, multiple support structures 32 may be provided on one vehicle 50. A configuration in which multiple support structures 32 are provided on one vehicle 50 is referred to as washing system variant 6. FIG. 16A is a side view illustrating a vehicle that can be used in one embodiment of washing system variant 6. FIG. 16B is a plan view illustrating a vehicle that can be used in one embodiment of washing system variant 6. FIGS. 16A and 16B show an example of a vehicle that can be applied to washing system variant 6, using as an example the case where a pump 13 is provided on the vehicle 50 described in washing system variant 4. 16A and 16B, a configuration in which multiple positioning mechanisms 30 are provided at multiple different positions on the vehicle body 51 is realized by providing support structures 32 at different positions on the surface (loading platform surface 54) of the loading platform portion 53. In this case, the support structures 33 and the arm members 34 are positioned so that the arm members 34 of each support structure 32 can position the nozzle 11 on either the left or right side of the vehicle 50. By providing multiple support structures 32 by positioning the support structures 33 and the arm members 34 in this manner, it is possible to realize a structure in which the nozzle 11 is positioned on either the left or right side of the vehicle 50. With the mobile bodies MB positioned on either the left or right side of the vehicle 50, the mobile bodies MB and the vehicle 50 can be moved relative to each other and the cleaning liquid CS can be sprayed from the nozzle 11 onto the mobile bodies MB, thereby cleaning each of the mobile bodies MB even when they are positioned on both the left and right sides of the vehicle 50. 16A and 16B, for the sake of convenience, the supply pipe 12 is not yet inserted into the inlet hole 38 of the support structure 32 (the state before the nozzle 11 is positioned). Therefore, the nozzle 11 is also omitted from FIGS. 16A and 16B.16A and 16B , a supply pipe 12 having branches corresponding to the number of positioning mechanisms 30 may be used, with each branched pipe portion 61 inserted into the inlet hole 38 of each positioning mechanism 30, a nozzle 11 disposed in each positioning mechanism 30, and the nozzle 11 connected to the branched pipe portion 61 of the supply pipe 12 disposed on the second arm portion 36. Note that the branched pipe portion 61 refers to the portion of the supply pipe 12 located forward (in the direction of flow of the cleaning liquid CS) (downstream) of the position where the flow path of the cleaning liquid CS first branches when the cleaning liquid CS flows through the supply pipe 12.

[0097] (Variation 7) In the cleaning system according to the present invention, the first arm 35 of the support structure may constitute an articulated arm 70 as shown in FIGS. 17A and 17B . This configuration is referred to as Variation 7 of the cleaning system. FIG. 17A is a side view illustrating a vehicle that can be used in Variation 7 of the cleaning system. FIG. 17B is a plan view illustrating a vehicle that can be used in Variation 6 of the cleaning system. In the example of FIGS. 17A and 17B , the articulated arm 70 is provided on the upper end of the support 33. A receiving portion 37 is formed on the front end of the articulated arm 70, and the receiving portion 37 is shaped to be able to receive the second arm 36. In the example of FIG. 17 , the receiving portion 37 is formed in an annular shape, similar to FIG. 1 and the like. However, the example of FIG. 17 is merely an example, and the configuration of the receiving portion 37 is not limited to the example in this figure. The second arm 36 is inserted into the receiving portion 37, and the receiving portion 37 and the second arm 36 are fixed together with a fixing member or the like. 17A and 17B, and a part of first arm unit 35 may be configured to double as support pillar 33. An example of such a configuration is a structure in which support pillar 33 shown in FIGS. 17A and 17B is included in first arm unit 35.

[0098] (Variation 8) In the washing system according to the present invention, the support structure may be configured such that the support 33 is movable in the left-right direction (the directions of arrows FP1 and FP2 in FIG. 18B ), as shown in the example of FIGS. 18A and 18B . This configuration is referred to as Variation 8 of the washing system. FIG. 18A is a side view illustrating a vehicle that can be used in an embodiment of Variation 8 of the washing system. FIG. 18B is a plan view illustrating a vehicle that can be used in an embodiment of Variation 8 of the washing system. In the example of FIGS. 18A and 18B , a guide rail 75 that guides the movement of the support 33 is provided on the vehicle body 51, and the lower end of the support 33 is fitted into the guide rail 75, allowing it to slide in the left-right direction of the vehicle 50 from the lower end side of the support 33. This configuration makes it possible to shorten the length of the first arm 35, or to omit the first arm 35, as shown in FIG. 18A . Furthermore, the support 33 can also function as the second arm 36. That is, in the eighth modification of the cleaning system, the arm member 34 may be omitted, and the position of the nozzle 11 may be determined by fixing the supply pipe 12 to the support 33.

[0099] (Variation 9) The cleaning system according to the present invention may be provided with a temperature adjustment unit for adjusting the temperature of the cleaning liquid. This configuration is referred to as Modified Example 9 of the cleaning system. The temperature adjustment unit may be provided at any position in the flow path FPS from the liquid supply source to the nozzle. The temperature adjustment unit may be a combination of a temperature adjustment unit and a temperature sensor. Examples of the temperature adjustment unit include a heater and a cooler. An example of the temperature adjustment unit is a configuration in which a temperature adjustment unit is installed to adjust the temperature of the cleaning liquid CS flowing through the supply pipe 12, and a temperature sensor is installed to measure the temperature of the cleaning liquid CS flowing through the supply pipe 12. When the liquid supply source is a tank, the temperature adjustment unit may be a device that adjusts the temperature of the liquid stored in the tank. Generally, a relatively high temperature of the cleaning liquid is considered to provide a higher cleaning effect than a low temperature of the cleaning liquid. In this regard, Modified Example 9 of the cleaning system enables the temperature of the cleaning liquid to be adjusted to a temperature that enhances the effectiveness of cleaning, thereby further improving the cleaning effect.

[0100] [2. Cleaning vehicle] As illustrated in FIGS. 19A and 19B, the cleaning vehicle according to the present invention is a vehicle for cleaning a moving object with a cleaning liquid. FIGS. 19A and 19B are side and plan views for explaining one embodiment of the cleaning vehicle according to the present invention. The cleaning vehicle 250 according to the present invention illustrated in FIGS. 19A and 19B has the same configuration as the vehicle 50 shown in FIG. 10B, except that the liquid supply source 16 is omitted from the fourth variation of the cleaning system described above. Therefore, the same reference numerals as used in the description of the cleaning system 10 will be used to explain the configuration of the cleaning vehicle according to the present invention. The details of each component (e.g., the bubble generator 15, the nozzle 11, the supply pipe 12, the pump 13, the positioning mechanism 30, etc.) described in the description of the cleaning system 10 can also be applied to the cleaning vehicle according to the present invention. Furthermore, the cleaning using the cleaning vehicle 250 according to the present invention is the same as the cleaning system using the vehicle 50 shown in FIG. 10B, and therefore a detailed description thereof will be omitted.

[0101] As explained in the above-mentioned explanation of the cleaning system, the cleaning vehicle 250 according to the present invention includes a vehicle body 51. The shape and structure of the vehicle body 51 of the cleaning vehicle 250 are not particularly limited, but it is preferable that the vehicle body 51 has a structure capable of carrying cargo, like a transport vehicle. The transport vehicle refers to a freight truck or the like.

[0102] 19A and 19B, the vehicle body 51 has a driver's seat section 52 configured to allow a driver to drive the vehicle, and a cargo bed section 53, and wheels 55 are provided on the undersides of the driver's seat section 52 and the cargo bed section 53.

[0103] The vehicle body 51 includes at least the positioning mechanism 30. In the example of FIGS. 19A and 19B, the vehicle body 51 includes a bubble generation device 15 that generates a gas-liquid mixture, a supply pipe 12 that supplies the cleaning liquid CS to the nozzle 11, and a pump 13 that flows the cleaning liquid CS into the supply pipe 12. That is, the vehicle body 51 includes the bubble generation device 15, the supply pipe 12, and the pump 13. In the example of FIGS. 19A and 19B, the bubble generation device 15, the supply pipe, and the pump are arranged on the loading platform 53.

[0104] (nozzle) In the example of the cleaning vehicle 250 shown in Figures 19A and 19B, the nozzle 11 is not mounted on the vehicle body 51. When preparing the nozzle 11 separately from the cleaning vehicle 250, as shown by the dashed line in Figure 19B etc., the nozzle 11 may be connected to the discharge pipe portion 22 of the supply pipe 12 after the second arm portion 36 is positioned on either the left or right side of the cleaning vehicle 250. Note that this does not prohibit the cleaning vehicle 250 from having the nozzle 11 in advance. In other words, the cleaning vehicle 250 may have the nozzle 11.

[0105] The structures of the bubble generating device 15, supply pipe 12, and pump 13 provided in the cleaning vehicle according to the present invention, the connecting structure of these structures (for example, the connection between the supply pipe 12 and the nozzle 11, etc.), and the structure of the nozzle 11 are the same as those explained in "1. Cleaning System" above, so detailed explanations will be omitted. Also, the structures of the gas-liquid mixture and cleaning liquid CS and the method for producing the gas-liquid mixture are the same as those explained in "1. Cleaning System" above, so detailed explanations will be omitted.

[0106] (positioning mechanism) The positioning mechanism 30 is defined in the same manner as described in the cleaning system described above. That is, the positioning mechanism 30 refers to a structural mechanism configured to determine the position of the nozzle 11. The positioning mechanism 30 is configured to be able to form a state in which the nozzle 11 is positioned on either the left or right side of the vehicle body 51, and in the examples of FIGS. 19A and 19B , is configured to be able to move the position of the nozzle 11 to either the left or right side of the vehicle body 51. For example, the positioning mechanism 30 shown in the examples of FIGS. 19A and 19B has a switching structure 31 that switches between a right-side shifting operation as an operation to position the nozzle 11 on the right side of the vehicle body 51 and a left-side shifting operation as an operation to position the nozzle 11 on the left side of the vehicle body 51. The switching structure 31 has a support structure 32 that fixes the position of the nozzle 11, and may switch between the right-side shifting operation and the left-side shifting operation depending on the movement and / or rotation of the support structure 32. The switching structure 31 and the support structure 32 provided in the cleaning vehicle of the present invention have a support 33 and an arm material 34, as described above in "1. Cleaning system," so detailed explanation will be omitted.

[0107] (liquid source) When the cleaning vehicle 250 according to the present invention is in use, the supply pipe 12 is connected to the liquid supply source 16 as shown in FIG. 19B. In FIG. 19B, the state in which the supply pipe 12 is connected to the liquid supply source 16 is indicated by a dashed line. The state in which the supply pipe 12 is connected to the liquid supply source 16 may be the same as the state in which the supply pipe 12 and the liquid supply source 16 are connected as shown in the example shown in FIG. 10B described above in the explanation of the cleaning system. Therefore, when the cleaning vehicle 250 is in use, as also shown in FIG. 10B, raw liquid that is the raw material for the gas-liquid mixture is introduced into the supply pipe 12 from a supply source (liquid supply source 16) of the liquid, and is released from the nozzle in the form of cleaning liquid CS. The liquid supply source 16 is not particularly limited, and examples thereof include a liquid storage tank (tank 17 in the example of FIG. 10B) that stores the liquid, a water supply, etc. In the example of Figure 10B, the liquid supply source 16 is arranged outside the cleaning vehicle (outside the vehicle 50), but this is just one example, and the liquid supply source 16, such as the tank 17, may be provided in the vehicle body 51. Note that a vehicle in which the tank 17 is provided in the vehicle body 51 is also shown in Figure 11. In other words, the vehicle 50 shown in Figure 11 is also applicable as a cleaning vehicle according to the present invention.

[0108] [Actions and effects of cleaning vehicles] The cleaning vehicle 250 according to the present invention includes a vehicle body 51 provided with a positioning mechanism 30, making it possible to form the above-described cleaning system according to the present invention. The vehicle's position can be determined according to the conditions of the location where the moving object MB to be cleaned is to be cleaned, and the determined location can be designated as the cleaning location. Therefore, by using the cleaning vehicle according to the present invention, a cleaning system that can be adapted to the conditions of the location can be formed. The cleaning system according to the present invention using the cleaning vehicle according to the present invention can clean moving objects even when the cleaning location is limited. Furthermore, the cleaning vehicle according to the present invention uses a gas-liquid mixture containing bubbles with a bubble diameter of 1 μm or less in the liquid, or a liquid containing such a gas-liquid mixture, as the cleaning fluid CS. This improves cleaning efficiency and allows moving objects to be cleaned with a relatively small amount of cleaning fluid. Therefore, by forming a cleaning system using the cleaning vehicle according to the present invention, it is possible to reduce the need for large-scale facilities for producing large amounts of cleaning fluid, thereby enabling a variety of locations to be used as cleaning locations.

[0109] [Modification of cleaning vehicle] In a cleaning vehicle 250 according to the present invention, as shown in FIGS. 20A, 20B, and 20C, the loading platform 53 may be provided with a wing roof 80 to cover the various components (e.g., the bubble generator 15, the nozzle 11, the supply pipe 12, and the pump 13) arranged on the loading platform surface 54. FIGS. 20A, 20B, and 20C are side views, plan views, and front views for explaining one example of a modified example of a cleaning vehicle according to the present invention. The wing roof 80 has wing side panels 81 on the left and right sides of the vehicle 50, and the wing side panels 81 are provided so as to be able to open and close about a predetermined axis (axis RN in FIG. 20). When using the cleaning vehicle, the wing side panels 81 are opened as needed (shown by the dashed line in FIG. 20C), the nozzle 11 is fixed using the positioning mechanism 30, and the cleaning liquid CS is passed through the supply pipe 12. The cleaning liquid CS is then released from the nozzle 11 toward the moving object MB to be cleaned, thereby cleaning the moving object MB. 20A and 20B, the components such as the positioning mechanism 30 arranged in the space surrounded by the wing roof 80 and the loading platform surface 54 are shown by dashed lines. Also, in Fig. 20C, the state in which the wing side panel 81 is open is shown by dashed lines. [Explanation of symbols]

[0110] 10: Cleaning system 11: Nozzle 12: Supply pipe 13: Pump 14: Drive source 15: Bubble generator 16 :Liquid supply source 21A: Outlet 30: Positioning mechanism 31: Switching structure 32: Support structure 33: Strut 34: Arm material 35: First arm 35A: One end 35B: Other end 36: Second arm 37: Receiving section 38: Entrance hole 39: Space inside the arm 50: Vehicle 51: Vehicle body 52: Driver's seat 53: Cargo area 54: Cargo surface 55 :Wheel 60: Nozzle position designation hole 65: Bottom cleaning mechanism 70: Articulated arm 75: Guide rail 80: Wing roof 81: Wing side panel 100: Bubble generator 250: Cleaning vehicle CS: cleaning solution FPS: Flow path

Claims

1. A cleaning system for cleaning a moving body with a cleaning liquid, the cleaning liquid is a gas-liquid mixture containing bubbles with a diameter of 1 μm or less in the liquid, or contains the gas-liquid mixture, a bubble generating device for generating the gas-liquid mixture; a nozzle for discharging the cleaning liquid; a supply pipe for supplying the cleaning liquid to the nozzle; a pump for causing the cleaning liquid to flow through the supply pipe; At least one vehicle having a vehicle body and a positioning mechanism provided on the vehicle body to determine the position of the nozzle; the positioning mechanism is configured to be able to displace the position of the nozzle to either the left or right position of the vehicle body, At least one of the vehicle and the moving object moves. Cleaning system.

2. 10. The cleaning system of claim 1, a plurality of the vehicles are arranged, and at least one of the vehicles is arranged on each of the right and left sides of the moving body; Cleaning system.

3. 10. The cleaning system of claim 1, the positioning mechanism is provided at a plurality of different positions on the vehicle body, At least one of the vehicle and the moving object is moved to each of the positions on the right and left sides of the vehicle. Cleaning system.

4. A cleaning vehicle including a vehicle body for cleaning a moving body with a cleaning liquid, The cleaning liquid is a gas-liquid mixture or contains the gas-liquid mixture, The vehicle body includes: a supply source of a liquid that is a raw material for the gas-liquid mixture; a bubble generating device for generating the gas-liquid mixture; a supply pipe for supplying the cleaning liquid to a nozzle for discharging the cleaning liquid; a pump for causing the cleaning liquid to flow through the supply pipe; a positioning mechanism for determining the position of the nozzle is provided on the vehicle body; The positioning mechanism is configured to be able to move the position of the nozzle to either the left or right position of the vehicle body. Washing vehicle.

Images