Water supply and drainage containers, disaster prevention vehicles, and disaster prevention vehicle operation methods

Abstract

To provide a pumping drainage container capable of maintaining the maximum loading amount and traveling stability when mounted on a vehicle even if it is large-sized.SOLUTION: Disclosed is a pumping drainage container 10 where a drive engine 11, a boost water pump 12, and a submerged pump 14 are included in one accommodation box 21, and the accommodation box 21 is constituted so as to be attachable / detachable to / from a vehicle main body 30. The accommodation box 21 includes a supporting leg 22 which enables the accommodation box 21 to self-support when unloading the accommodation box 21 from the vehicle main body 30 and freely advances and retreats a container placing part 33 of the vehicle main body 30 between a load transmission bottom face 25a of the accommodation box 21 and a container ground contact face G when loading / unloading the accommodation box 21 to the vehicle main body 30. Also, the vehicle main body 30 includes an air suspension 39, and the container placing part 33 is elevated / lowered by the air suspension 39.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a water supply and drainage container capable of supplying water from a water source located away from a fire site and draining large amounts of water during floods, a disaster prevention vehicle equipped with the water supply and drainage container, and a method for operating the disaster prevention vehicle. [Background technology]

[0002] Disaster prevention vehicles include vehicles used to transport large amounts of water, drain large amounts of water, and secure water for daily use during various disasters such as fires, floods, and earthquakes. These vehicles typically consist of a water supply vehicle and a hose extension vehicle. These vehicles are capable of transporting large amounts of water over long distances from distant water sources such as the sea or rivers to the fire scene, and draining large amounts of water from areas flooded or submerged by typhoons. They can also supply water for daily use from rivers to residential areas when the water pipe network becomes unusable due to an earthquake.

[0003] As disclosed in Patent Document 1, for example, a water supply vehicle is a vehicle capable of pumping water from a water intake source capable of pumping large amounts of water, such as the sea or a river, using a hydraulically driven submersible pump. A hose extension vehicle is loaded with a water supply hose that can supply water to a location more than 1,000 m away. The hose extension vehicle is equipped with a hose recovery device that recovers the water supply hose that has been pulled out from the vehicle.

[0004] The water supply vehicle of Patent Document 1 has a portable base unit mounted on the vehicle body. This base unit is a water supply / drainage container with the function of supplying water or draining water, and is equipped with a drive engine, a hydraulic pump driven by the drive engine, and a hose reel that stores a hydraulic hose for supplying hydraulic oil from the hydraulic pump to an external submersible pump, all in a single storage box. When the water supply / drainage container is to be used, it is lowered from the vehicle body.

[0005] In conventional water supply and drainage vehicles equipped with a drainage container such as that described in Patent Document 1, the loading and unloading of the drainage and drainage container onto and from the vehicle body is performed using a crane mounted on the vehicle body. Also, in some cases, a detachment device is provided on the vehicle body to facilitate loading and unloading of the drainage and drainage container onto and from the vehicle body. Known examples of detachment devices include a loading arm with a hook portion at the tip that can rotate in the fore-and-aft direction of the vehicle, as described in Patent Document 2. The hook portion of the loading arm engages with an engaging portion provided on the drainage and drainage container, thereby rotating the loading and unloading of the drainage and drainage container onto and from the vehicle body. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 7-185031 [Patent Document 2] Japanese Patent Application Publication No. 10-100779 Summary of the Invention [Problem to be solved by the invention]

[0007] In a vehicle equipped with a loading arm-type detachment device as in Patent Document 2, a large-scale device must be mounted on the chassis, which is the running part of the vehicle body, resulting in a problem of a reduced maximum load capacity. Therefore, when the system for water supply and drainage is large and the water supply and drainage container to be loaded is large, there is a problem that the entire system for water supply and drainage cannot be mounted on the vehicle body. Furthermore, in a vehicle such as that in Patent Document 2, when the water supply and drainage container is loaded on the vehicle, the horizontal part of the L-shaped loading arm is sandwiched between the chassis and the water supply and drainage container, so the container is mounted higher relative to the vehicle body, resulting in a problem of poor running stability when the vehicle is running.

[0008] The present invention has been made in consideration of these points, and its purpose is to provide a water supply and drainage container that can ensure maximum load capacity and running stability when mounted on a vehicle even if it is large, a disaster prevention vehicle that mounts said water supply and drainage container, and a method for operating said disaster prevention vehicle. [Means for solving the problem]

[0009] The present invention provides means for solving the above-mentioned problems as follows: That is, a first invention is a drainage container comprising a storage box that is detachable from a vehicle body and that includes a drive engine, a boost water pump driven by the drive engine, a hydraulic pump driven by the drive engine, and a submersible pump that has a hydraulic motor driven by the hydraulic pump and can be connected to an external water intake source, the storage box being characterized in that the storage box is provided with support legs that allow the storage box to stand on its own when lowered from the vehicle body and that allow a container mounting section of the vehicle body to move back and forth between the load-transmitting bottom surface of the storage box and the container's ground contact surface when the storage box is loaded onto or unloaded from the vehicle body.

[0010] According to the first aspect of the present invention, by incorporating a water supply and drainage system, such as a boost water pump and a submersible pump, into a single storage box, the water supply and drainage system can be mounted on the vehicle body. This allows for a maximum stable tilt angle compared to when a water supply and drainage system, such as a boost water pump, is directly attached to the chassis. Furthermore, the storage box housing the water supply and drainage system is provided with support legs between the load-transmitting bottom surface of the storage box and the container's ground contact surface to allow the container mounting section of the vehicle body to move back and forth when loading or unloading the storage box onto or from the vehicle body. This allows for easy loading and unloading of the water supply and drainage container onto or from the vehicle body without the need for a large-scale loading and unloading device. This allows for a maximum vehicle load capacity to be secured by eliminating the need for a large-scale loading and unloading device on the vehicle body. Therefore, even if a large-capacity water supply and drainage system is used and the water supply and drainage container is large, the entire system can be easily mounted on the vehicle body. Furthermore, when the water supply and drainage container is mounted on the vehicle body, the horizontal part of the L-shaped loading arm, which is the case with arm-type detachable vehicles, does not get caught between the chassis and the water supply and drainage container. This allows the water supply and drainage container to be mounted lower relative to the vehicle body, resulting in excellent running stability when the vehicle is running.

[0011] A second invention is a disaster prevention vehicle that has the drainage container of the first invention removably mounted on a container mounting section of the vehicle body, and is characterized in that when the container mounting section is lowered by the air suspension, the container mounting section is located below the load transmission bottom surface of the drainage container in a free-standing state on the support legs, and when the container mounting section is raised by the air suspension, the container mounting section abuts against the load transmission bottom surface and lifts the free-standing drainage container.

[0012] According to the second aspect of the present invention, by effectively utilizing the vehicle height adjustment function of the air suspension originally provided on the vehicle body, the vehicle body can be detached from the freestanding drainage container using the support legs. Furthermore, the freestanding drainage container can be lifted using the support legs, and the support legs can be retracted to load the container onto the vehicle body. This eliminates the need to provide a dedicated lifting device for loading and unloading the drainage container on the vehicle body or the drainage container, thereby increasing the maximum load capacity of the disaster prevention vehicle. As a result, large-capacity drainage containers can be easily transported.

[0013] The third invention is characterized in that, in the second invention, a guide rail portion extending in the fore-and-aft direction is provided near the load-transmitting bottom surface of the water supply and drainage container, and a guide roller is provided in the container loading portion of the vehicle body to abut against the guide rail portion when the water supply and drainage container is attached to or detached from the vehicle body, thereby preventing the water supply and drainage container from shifting left and right relative to the vehicle body.

[0014] According to the third aspect of the present invention, when loading or unloading a water supply and drainage container onto or from a vehicle body, the driver does not need to carefully align the vehicle body in the left-right direction with the freestanding water supply and drainage container. The vehicle body is advanced or retreated while the guide rollers of the vehicle body are in contact with the guide rails of the water supply and drainage container, automatically preventing left-right misalignment. This prevents the vehicle body from hitting the support legs and damaging them, improving workability. Furthermore, since there is no need to make the support legs stronger than necessary and increase their weight in anticipation of the vehicle body hitting them, it is possible to increase the load capacity of equipment that can be installed in the storage box for the water supply and drainage container.

[0015] The fourth invention is characterized in that, in the second or third invention, a support tube portion with an axis in the left-right direction is provided at the bottom of the storage box, and the support leg has a rotating shaft portion at its base end that is freely rotatable relative to the support tube portion and can be freely inserted in the direction in which the axis extends.

[0016] According to the fourth aspect of the present invention, the support legs of the water supply and drainage container can be easily switched between a storage state and a usage state with a simple structure. This allows the weight of the support legs to be reduced compared to, for example, support legs configured to be extendable and retractable using hydraulic cylinders. As a result, the load capacity of equipment that can be installed in the storage box of the water supply and drainage container can be increased.

[0017] The fifth invention is a method for operating a disaster prevention vehicle comprising a storage box containing a drive engine, a boost water pump driven by the drive engine, a hydraulic pump driven by the drive engine, and a submersible pump having a hydraulic motor driven by the hydraulic pump and capable of being thrown into an external water intake source, and a drainage container having support legs attached to the storage box that is detachably attached to a vehicle body that is equipped with air suspension, the method comprising: using the air suspension to raise a container mounting portion of the vehicle body of the disaster prevention vehicle carrying the drainage container at an installation point near the water intake source, and positioning the support legs of the drainage container so that their tips face the container's contact surface, and a vehicle body moving forward to remove the container mounting section from below the storage box for the drainage container; a first water supply hose connecting the water supply outlet of the submersible pump to the suction port of the boost water pump; a second water supply hose connecting the water supply outlet of the boost water pump to a water destination; and a drive system for driving the submersible pump and the boost water pump based on the power of the drive engine to supply water from the water intake source to the water destination.

[0018] According to the fifth aspect of the present invention, the water supply and drainage container can be loaded and unloaded onto the vehicle body without the need for a large-scale loading and unloading device with a loading arm on the chassis, so that a large water supply and drainage container can be transported with the container mounted at a low position relative to the vehicle body. This makes it possible to easily transport a large water supply and drainage container while maintaining the driving stability of the disaster prevention vehicle, even if the road to the installation point is rough.

[0019] Furthermore, when using the water supply / drainage container, only the parts necessary for water supply or drainage work can be left at the installation point near the water intake source, and the vehicle itself can be moved from the installation point and used for other tasks, such as transporting a different type of container. This improves the operating rate of the vehicle itself compared to disaster prevention vehicles that have systems for water supply / drainage, such as a drive engine and boost water pump or submersible pump, directly attached to the chassis.

[0020] Furthermore, by supporting the container on its support legs when it is installed at an installation point near the water intake source, the floor of the container box containing the drive engine, boost water pump, etc. can be positioned higher than the container's ground surface. This means that when using the container for drainage to discharge water after heavy rain, even if the heavy rain continues and the installation point is flooded, only the support legs of the container will be submerged, and the drive engine will not be submerged. As a result, problems such as the drive engine stalling during operation can be prevented. [Effects of the Invention]

[0021] The drainage container and disaster prevention vehicle of the present invention allow the drainage container to be easily loaded and unloaded from the vehicle body without the need for a large-scale loading and unloading device using a loading arm. This ensures the maximum load capacity of the vehicle, so even if a large-capacity drainage system is used and the drainage container is large, the entire system can be easily mounted on the vehicle body. In addition, the drainage container can be mounted low relative to the vehicle body, improving driving stability when the vehicle is running. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a side view of a waterproof vehicle according to an embodiment of the present invention. [Figure 2] FIG. 1 is a side view of a water supply and discharge container according to an embodiment of the present invention. [Figure 3] 1 is a side view of a vehicle body on which a water supply / removal container according to this embodiment is detachably mounted. FIG. [Figure 4] 1 is a schematic diagram showing a state in which the drainage container according to the present embodiment is used. FIG. [Figure 5] FIG. 2 is an explanatory diagram of the operation of a disaster prevention vehicle according to the present embodiment. [Figure 6] 10A and 10B are explanatory diagrams illustrating the operation when attaching and detaching a water supply and drainage container to and from the vehicle body in the disaster prevention vehicle of this embodiment, where (a) is an explanatory diagram when the container loading section is raised to the highest position by the air suspension of the vehicle body, and (b) is an explanatory diagram when the container loading section is lowered to the lowest position by the air suspension of the vehicle body. [Figure 7] 3 is a flowchart showing a method for operating a disaster prevention vehicle according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, a water supply and drainage container and a disaster prevention vehicle according to an embodiment of the present invention will be described with reference to the drawings.

[0024] 1 shows a disaster prevention vehicle 1 according to an embodiment of the present invention. This disaster prevention vehicle 1 is composed of a vehicle body 30 and a drainage container 10 that is detachable from the vehicle body 30.

[0025] As shown in Figures 2 and 4, the water supply and drainage container 10 comprises a drive engine 11, a fuel tank 15 for storing fuel for the drive engine 11, a boost water pump 12 driven by the drive engine 11, a hydraulic pump 13 driven by the drive engine 11, an underwater pump 14 having a hydraulic motor 14a driven by the hydraulic pump 13 and capable of being inserted into an external water intake source W, and a hose reel 16, all housed in a single storage box 21.

[0026] The storage box 21 has a side door 27 on the side and a rear door 28 on the rear. An exhaust port 29 is provided on the top surface of the storage box 21 to allow exhaust gas from the drive engine 11 to escape to the outside.

[0027] The boost water pump 12 makes it possible to send water to a distant water destination that cannot be reached by the submersible pump 14 alone. The boost water pump 12 is located at the front of the storage box 21 and has an inlet 12a and an outlet 12b. When the side door 27 of the storage box 21 is opened, the inlet 12a and the outlet 12b are exposed to the outside. The inlet 12a is connected to the water supply port of the submersible pump 14 by a first water supply hose 51. The outlet 12b is connected to the water destination by a second water supply hose 52. An operation panel 18 is provided on the container body 10.

[0028] The driving engine 11 is disposed in the center of the storage box 21 together with the fuel tank 15. The fuel inside the fuel tank 15 decreases as the driving engine 11 is driven, but the weight balance between the front and rear of the water supply and drainage container 10 does not change significantly regardless of the amount of fuel.

[0029] The submersible pumps 14 are adapted to be taken out through the rear door 28 of the storage box 21. In this embodiment, two submersible pumps 14 are provided. The submersible pumps 14 have floats, and when inserted into the water intake source W, they are maintained floating near the water surface. The submersible pumps 14 also have an impeller that is rotationally driven by a hydraulic motor 14a.

[0030] The hose reel 16 houses a hydraulic hose 17 for supplying hydraulic oil from the hydraulic pump 13 to the hydraulic motor 14a of the submersible pump 14. When the submersible pump 14 is inserted into the water intake source W, the hydraulic hose 17 is pulled out from the hose reel 16.

[0031] The bottom of the storage box 21 is a base frame 24 extending in the front-rear direction from the top surface. The base frame 24 is provided with a pair of left and right vertical frames 25 extending in the front-rear direction, and a pair of left and right engaged portions 26 provided at the front and rear.

[0032] 6, the vertical frame 25 has a U-shaped cross section with the opening facing outward on the left and right sides of the vehicle when viewed from the front-rear direction of the vehicle, and its bottom surface serves as a load-transmitting bottom surface 25a of the storage box 21. Furthermore, the left and right inner surfaces of the vertical frame 25 serve as guide rail portions 25b. The guide rail portions 25b extending in the front-rear direction are provided near the load-transmitting bottom surface 25a.

[0033] In addition, the base frame portion 24 is provided with support legs 22 that allow the storage box 21 to stand on its own when it is lowered from the vehicle body 30, and that allow the container loading portion 33 of the vehicle body 30 to move freely between the load transmission bottom surface 25a of the storage box 21 and the container contact surface G when loading or unloading the storage box 21 onto or from the vehicle body 30.

[0034] As shown in Fig. 1, a total of six support legs 22 are provided, one pair on each side, at the front, center, and rear of the base frame portion 24. The front support legs 22 are freely switchable between a usage configuration in which the tip ends face the container ground contact surface G and a storage configuration in which they are rotated approximately 90 degrees from the usage configuration toward the rear of the vehicle (in the direction of arrow A in Fig. 1). The center and rear support legs 22 are also freely switchable between a usage configuration in which the tip ends face the container ground contact surface G and a storage configuration in which they are rotated approximately 90 degrees from the usage configuration toward the front of the vehicle (in the direction of arrow B in Fig. 1).

[0035] The rotation mechanism of the support leg 22 will be described more specifically. As shown in Fig. 6(a), the base frame portion 24 is provided with a support cylinder portion 23 having an axis O in the left-right direction. The support leg 22 has a rotation shaft portion 22a at its base end portion that is inserted so as to be rotatable relative to the support cylinder portion 23 and slidable in the direction of extension of the axis O. To change the support leg 22 from the stored configuration to the usage configuration, the support leg 22 is pulled outward in the left-right direction from the support cylinder portion 23, and then the rotation shaft portion 22a is rotated toward the container ground surface G.

[0036] 3, the vehicle body 30 has a chassis frame 31 extending in the front-rear direction, and a driver's cab 32 is provided in front of the chassis frame 31. A subframe 34 is attached to the chassis frame 31 on the rear side of the driver's cab 32.

[0037] A crane 41 is provided at the front of the subframe 34. The subframe 34 also has bolsters 36 extending in the left-right direction at two locations, the front and rear (see Figure 6). Twist lock portions 37 are provided at both left and right ends of the bolster 36.

[0038] A container placing section 33 is provided on the upper surface of the subframe 34, rearward of the position of the crane 41. A container stopper 38 is provided at the front end of the container placing section 33. In addition, the container placing section 33 is provided with guide rollers 35 that protrude above the upper surface of the subframe 34.

[0039] The guide rollers 35 are provided to abut against the guide rail portions 25b when the water supply and drainage container 10 is attached to or detached from the vehicle body 30, thereby correcting any left-right positional deviation of the water supply and drainage container 10 relative to the vehicle body 30.

[0040] A total of six guide rollers 35 are provided, one pair on each side, at the center, rear, and rear end of the container loading section 33. Each guide roller 35 is erected on a cross member connecting the pair of left and right sub-frames 34, and has a support portion on the base end side and a roller portion on the tip end side that is rotatable about a vertical axis. As shown in Figure 6, the distance between the left and right ends of two adjacent guide rollers 35, 35 on the left and right sides approximately matches the dimension between the guide rail portions 25b, 25b of the pair of left and right vertical frames 25, 25 of the water supply and drainage container 10.

[0041] As shown in Fig. 3, the vehicle body 30 has air suspensions 39. The air suspensions 39 are interposed between the wheels 42 of the vehicle body 30 and the chassis frame 31, and allow the height position of the container mounting section 33 to be adjusted. As shown in Fig. 6(b), when the container mounting section 33 is lowered by the air suspensions 39, the container mounting section 33 is positioned below the load transmission bottom surface 25a of the drainage and water supply container 10 in a free-standing state on the support legs 22. Furthermore, as shown in Fig. 6(a), when the container mounting section 33 is raised by the air suspensions 39, the container mounting section 33 is configured to abut against the load transmission bottom surface 25a of the drainage and water supply container 10 and lift up the free-standing drainage and water supply container 10.

[0042] When the container placement section 33 is raised or lowered by the air suspension 39, the guide rollers 35 of the vehicle body 30 move along the guide rail section 25b of the water supply / removal container 10.

[0043] Furthermore, when the container mounting portion 33 of the vehicle body 30 is in contact with the load transmitting bottom surface 25a of the water supply and discharge container 10, the engaging portion of the twist lock portion 37 can be engaged with the engaged portion 26 of the vehicle body 30. The alignment of the engaging portion of the twist lock portion 37 with the engaged portion 26 of the vehicle body 30 in the fore-and-aft direction can be easily achieved by abutting the base frame portion 24 of the vehicle body 30 against the container stopper 38.

[0044] Next, a method of operation by a user such as an operator of the disaster prevention vehicle 1 according to this embodiment will be described with reference to FIGS.

[0045] First, the disaster prevention vehicle 1 equipped with the vehicle body 30 is driven to the installation point P near the water intake source W (step S01 in FIG. 7).

[0046] Next, at the installation point P, the container placement section 33 of the vehicle body 30 is raised using the air suspension 39 (step S02 in FIG. 7).

[0047] Next, the engaging portion of the twist lock portion 37 of the vehicle body 30 is disengaged from the engaged portion 26 of the water supply and discharge container 10 (step S03 in FIG. 7).

[0048] Next, the support legs 22 of the drainage container 10 are put into a usage configuration with the tip portions 22b facing the container's ground contact surface G (step S04 in FIG. 7). At this time, as shown in FIG. 6(a), the support legs 22 are pulled outward in the left-right direction (in the direction of arrow C) from the support cylinder portions 23, and then the rotation shaft portions 22a are rotated toward the container's ground contact surface G. By pulling the support legs 22 outward in the left-right direction from the support cylinder portions 23, the distance between adjacent support legs 22, 22 on the left and right can be made sufficiently larger than the width of the vehicle body 30, making it easier to attach and detach the drainage container 10.

[0049] Next, the air suspension 39 of the vehicle body 30 is used to lower the container mounting portion 33 of the vehicle body 30, thereby bringing the rotation shaft portion 22a of the support leg 22 into contact with the container ground surface G. At this time, the support leg base 70 may be interposed between the tip end 22b of the support leg 22 and the container ground surface G. Then, the container mounting portion 33 is further lowered to position the container mounting portion 33 below the load-transmitting bottom surface 25a of the drainage / water supply container 10 that is freestanding by the support leg 22 (step S05 in FIG. 7).

[0050] Next, the vehicle body 30 is moved forward (in the direction of arrow D in FIG. 5 ) to remove the container mounting section 33 from below the storage box 21 for the drainage container 10 (step S06 in FIG. 7 ). At this time, if the vehicle body 30 attempts to shift position in the left-right direction (vehicle width direction) relative to the drainage container 10, the guide rollers 35 of the vehicle body 30 will come into contact with the guide rail sections 25b of the drainage container 10, and the vehicle body 30 will not be able to approach any further nearer to the support legs 22 of the drainage container 10, thereby preventing the vehicle body 30 from hitting the support legs 22.

[0051] Next, the rear door 28 of the drainage container 10 is opened, and the submersible pump 14 is taken out from the storage box 21. At this time, the hydraulic hose 17 stored in the hose reel 16 is pulled out together with the submersible pump 14.

[0052] Next, the side door 27 of the drainage container 10 is opened, and the water supply port of the submersible pump 14 is connected to the suction port 12a of the boost water pump 12 with a first water supply hose 51 (step S07 in FIG. 7). The first water supply hose 51 includes a submersible pump connection hose 51a and a main hose 51c. In this embodiment, two submersible pumps 14 are housed in the storage box 21. However, if a single submersible pump 14 is not sufficient to supply the amount of water to the boost water pump 12, one end of the submersible pump connection hose 51a is connected to the water supply port of each submersible pump 14, and the other ends of the two submersible pump connection hoses 51a are joined together with a pipe fitting 51b. One end of the main hose 51c is then connected to the pipe fitting 51b, and the other end of the main hose 51c is connected to the suction port 12a of the boost water pump 12.

[0053] Next, the submersible pump 14 is placed in the water intake source W, such as a river (step S08 in FIG. 7). At this time, a crane 41 provided on the vehicle body 30 can be used. The submersible pump 14 is connected to the storage box 21 of the drainage container 10 by a hydraulic hose 17, but the crane 41 can be freely moved relative to the drainage container 10 by moving the vehicle body 30. This makes it easy to place the submersible pump 14 in the water intake source W.

[0054] Next, the discharge port 12b of the boost water pump 12 is connected to the water destination by the second water supply hose 52 (step S09 in FIG. 7). The work of extending the second water supply hose 52 from the installation point P of the drainage container 10 to the water destination is performed by a hose extension vehicle 60 that operates together with the disaster prevention vehicle 1.

[0055] Next, the operator operates the control panel 18 to drive the drive engine 11 mounted on the storage box 21 of the drainage container 10. Then, the submersible pump 14 and the boost water pump 12 are driven based on the power of the drive engine 11 to supply water from the water intake source W to the water destination (step S10 in FIG. 7). At this time, hydraulic pressure from the hydraulic pump 13 driven by the engine 11 is used to drive the submersible pump 14.

[0056] Once water supply from the water intake source W to the water destination begins, the vehicle body 30 does not need to be near the water supply / drainage container 10, but can be moved to another location to transport another container, thereby improving the operating rate.

[0057] Furthermore, the water supply / drainage container 10 performs water supply or drainage work at an installation point P near the water intake source W, and the support legs 22 enable the floor of the storage box 21 that houses the drive engine 11 and other components to be positioned higher than the container's ground surface G. This makes it possible to prevent the boost water pump 12 from being submerged in water even if the installation point P is submerged due to water overflowing from the water intake source W.

[0058] After the water supply or drainage operation using the water supply / drainage container 10 is completed, removal work is performed by roughly reversing the flow of steps S01 to S10. In this removal work, the water supply / drainage container 10 is loaded onto the vehicle body 30. At this time, the container mounting section 33 of the vehicle body 30 is lowered using the air suspension 39, and the vehicle body 30 is moved back toward the water supply / drainage container 10, which is freestanding on the support legs 22. However, the vehicle body 30 must be aligned left and right so that it does not hit the support legs 22. In this embodiment, this left and right alignment (position correction) is performed automatically by moving the vehicle body 30 back while the guide rollers 35 of the vehicle body 30 abut against the guide rail sections 25b of the water supply / drainage container 10, so that the vehicle body 30 does not approach the support legs 22. Moving the vehicle body 30 back is more difficult than moving it forward, which improves operability for the operator operating the vehicle body 30.

[0059] As described above, according to the disaster prevention vehicle 1 of this embodiment, the water supply and drainage system, such as the boost water pump 12 and the submersible pump 14, is contained in a single storage box 21 in the water supply and drainage container 10, allowing the water supply and drainage system to be loaded onto the vehicle body 30. Therefore, the maximum stable tilt angle can be ensured compared to when the water supply and drainage system, such as the boost water pump 12, is directly attached to the chassis. Furthermore, the storage box 21 containing the water supply and drainage system is provided with support legs 22 between the load transmission bottom surface 25a of the vehicle body 30 and the container ground surface G to allow the container mounting section 33 of the vehicle body 30 to move back and forth during loading and unloading from the vehicle body 30. This makes it possible to easily load and unload the water supply and drainage container 10 onto and from the vehicle body 30 without the need for a large-scale loading and unloading device. Since no large-scale unloading device is provided on the vehicle body 30, the maximum load capacity of the vehicle can be ensured. Therefore, even if a large-capacity water supply and drainage system is used and the water supply and drainage container 10 is large, the entire system can be adequately mounted on the vehicle body 30. Furthermore, when the drainage container 10 is mounted on the vehicle body 30, the horizontal portion of the L-shaped loading arm, as in the case of a loading arm-type detachable vehicle, does not get caught between the chassis and the drainage container 10. This allows the loading position of the drainage container 10 relative to the vehicle body 30 to be lowered, resulting in excellent running stability when the vehicle is running.

[0060] Furthermore, by effectively utilizing the vehicle height adjustment function of the air suspension 39 originally provided on the vehicle body 30, there is no need to provide a dedicated lifting device for loading and unloading the drainage container 10 on the vehicle body 30 or the drainage container 10, which increases the maximum load capacity of the disaster prevention vehicle 1. As a result, a large-capacity, large-sized drainage container 10 can be easily transported.

[0061] The embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. The technical scope of the present invention is not to be interpreted solely by the above-described embodiments, but is defined by the claims. The technical scope of the present invention also includes all modifications within the scope and meaning equivalent to the claims. [Explanation of symbols]

[0062] 1. Disaster prevention vehicles 10. Wastewater supply container 11 Driving engine 12 Boost water pump 12a Inlet 12b Discharge port 13 Hydraulic pump 14 Submersible pump 14a Hydraulic motor 15 Fuel Tank 16 Hose reel 17 Hydraulic hose 18 Control panel 21 Storage Box 22 Support legs 22a Rotating shaft 22b Tip 23 Support cylinder part 24 Base frame part 25 vertical frame 25a Load transfer bottom 25b Guide rail part 26 Engaged part 27 Side door 28 Rear door 29 Exhaust port 30 Vehicle body 31 Chassis frame 32 Driver's cab 33 Container loading area 34 Subframe 35 Guide roller 36 Bolster 37 Twist lock section 38 Container Stopper 39 Air suspension 41 Crane 42 wheels 51 First water supply hose 51a Submersible pump connection hose 51b Pipe fittings 51c main hose 52 Second water supply hose 60 Hose extension vehicle 70 Support leg base G Container ground surface O axis center P Installation point W water intake source

Claims

1. A water supply and drainage container that is detachably mounted on a container mounting section provided on the vehicle body of a disaster prevention vehicle, a drive engine, a boost water pump driven by the drive engine, a hydraulic pump driven by the drive engine, and a submersible pump having a hydraulic motor driven by the hydraulic pump and capable of being inserted into an external water intake source, all contained in one housing box; The storage box is support legs for allowing the storage box to stand on its own when unloaded from the vehicle body and for allowing a container placement portion of the vehicle body to freely move back and forth between a load transmission bottom surface of the storage box and a container ground contact surface when loading or unloading the storage box onto or from the vehicle body; a guide rail portion provided near the load transmission bottom surface and extending in the front-rear direction, The vehicle body is provided with an air suspension, When the container mounting part is lowered by the air suspension, the container mounting part is located below the load transmission bottom surface of the water supply / drainage container which is in a self-standing state on the support legs, When the container mounting unit is raised by the air suspension, the container mounting unit abuts against the load transmission bottom surface and lifts the freestanding water supply / drainage container, Furthermore, the container mounting section is provided with guide rollers that come into contact with the guide rail sections when the water supply and drainage container is attached to or detached from the vehicle body, thereby preventing the water supply and drainage container from shifting left and right relative to the vehicle body, The guide roller is A pair of left and right flaps are provided at least at the rear end of the container loading section, When the storage box is loaded or unloaded from the vehicle body, the container loading section of the vehicle body is moved back and forth between the load transmission bottom surface of the storage box and the container ground surface, and is arranged at a height that makes contact with the guide rail section. A drainage container characterized by:

2. The water supply / drainage container according to claim 1 is detachably mounted on a container mounting portion of a vehicle body. A disaster prevention vehicle characterized by:

3. A support cylinder portion having an axis in the left-right direction is provided at the bottom of the storage box, and the support leg has a rotation shaft portion at its base end that is inserted rotatably relative to the support cylinder portion and slidably in the direction of extension of the axis.

3. The disaster prevention vehicle according to claim 2.

4. A method for operating a disaster prevention vehicle in which the drainage container according to claim 1 is detachably mounted on a container mounting section of the vehicle body, comprising: The disaster prevention vehicle carrying the container is raised at an installation point near a water intake source using the air suspension to raise a container mounting portion of the vehicle body, the support legs of the water supply and drainage container are placed in a usage configuration with their tips facing the container's contact surface, and the container mounting section of the vehicle body is lowered using the air suspension, thereby positioning the container mounting section below the load-transmitting bottom surface of the water supply and drainage container that is self-supporting due to the support legs; The vehicle body is moved forward to separate the container mounting section from below the storage box for the water supply and drainage container, The water supply port of the submersible pump and the suction port of the boost water pump are connected by a first water supply hose, Inserting the submersible pump into the water intake source; The discharge port of the boost water pump is connected to a water destination by a second water supply hose, The submersible pump and the boost water pump are driven based on the power of the drive engine, and water is supplied from the water intake source to the water destination. A method for operating a disaster prevention vehicle.

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