Railway vehicle body washing equipment

Abstract

The object of the present invention is to provide a railway vehicle body washing device that can reduce the labor required when washing the side panels of a railway vehicle body. [Solution] The railway vehicle body washing device comprises a water tank 11 for storing water for washing the body of the railway vehicle, a detergent tank 12 for storing oxalic acid solution for washing the body of the railway vehicle, a first support member 21 provided to face the side panel of the railway vehicle body and extending in the vertical direction, first to fifth nozzles 31 to 35 attached to the first support member 21 and arranged at predetermined intervals in the vertical direction, and first and second electric pumps 41 and 42 for pressurizing the water in the water tank 11 and the oxalic acid solution in the detergent tank 12 to the first to fifth nozzles 31 to 35.

Description

Technical Field

[0001] The present invention relates to a vehicle body washing device for railway vehicles.

Background Art

[0002] Conventionally, as a vehicle body washing device for railway vehicles, there is one disclosed in Japanese Patent Application Laid-Open No. 5-238360 (Patent Document 1). In this vehicle body washing device, a hot water shower nozzle for spraying hot water in a shower shape from above the front head of the railway vehicle, a first washing spray nozzle for spraying a foamy detergent onto the front head of the railway vehicle, and a second washing spray nozzle for spraying water onto the front head of the railway vehicle are used to reduce the burden on workers.

Prior Art Documents

Patent Documents

[0003] [[ID=2I]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] On the other hand, when washing the side plates of the vehicle body of the railway vehicle, there is a problem that the labor is high because workers manually apply the detergent uniformly to the side plates of the vehicle body.

[0005] Therefore, an object of the present invention is to provide a vehicle body washing device for railway vehicles that can reduce the labor when washing the side plates of the vehicle body of the railway vehicle.

Means for Solving the Problems

[0006] The vehicle body washing device for railway vehicles according to the first aspect of the present invention is a liquid tank for storing a liquid for washing the vehicle body of the railway vehicle, a support member provided to face the side plates of the vehicle body of the railway vehicle and extending along the vertical direction, Multiple nozzles are attached to the above-mentioned support member and are arranged at predetermined intervals in the vertical direction, A liquid pump that pressurizes the liquid in the liquid tank to the nozzle, Equipped with A stationary car washing device, The above liquid tank comprises a first liquid tank for storing water and a second liquid tank for storing liquid detergent. The first liquid tank and the second liquid tank are fluidically connected to the liquid pump via a three-way valve. The liquid pump described above pumps either the water in the first liquid tank or the liquid detergent in the second liquid tank and sprays it onto the side panel of the vehicle body. .

[0007] Here, the support member described above only needs to have at least a portion of the part to which the multiple nozzles are attached extending in the vertical direction or substantially vertical direction (for example, in a direction in which the angle of inclination with respect to the vertical is within the range of 0 degrees and 20 degrees or less). In other words, the support member described above only needs to have at least a portion of the part to which the multiple nozzles are attached extending substantially along the vertical direction.

[0008] The orientation of the arrangement of the multiple nozzles described above should also be substantially vertical, similar to the direction of extension of the support member.

[0009] According to the above configuration, when the multiple nozzles spray liquid toward the side panel of the vehicle body, since the multiple nozzles are arranged vertically at predetermined intervals, the liquid can be applied to the portion of the side panel of the railway vehicle body where the support members face each other. Therefore, by moving the vehicle body horizontally relative to the multiple nozzles, the liquid can be applied to the entire side panel of the railway vehicle body, thereby reducing the effort required to clean the side panel of the railway vehicle body.

[0011] With the above configuration, the first liquid tank and the second liquid tank are fluidly connected to the liquid pump via a three-way valve, so that by operating the three-way valve, water can be pumped from the first liquid tank to the nozzle, or liquid detergent can be pumped from the second liquid tank to the nozzle.

[0012] Furthermore, after pumping liquid detergent from the second liquid tank to the nozzle, pumping water from the first liquid tank to the nozzle allows for the washing away of any remaining liquid between the second liquid tank and the nozzle. Therefore, when the liquid detergent is highly acidic, deterioration of downstream components such as piping can be suppressed.

[0013] This invention 2 A railway vehicle body washing device according to the type is: The above first state To In the railway vehicle body washing device described above, The above-mentioned railway vehicle is provided with a work base that is positioned opposite to the above-mentioned side panel of the vehicle body and extends horizontally, The above-mentioned support member is installed at one end of the above-mentioned work base.

[0014] With the above configuration, since the support member is installed at one end of the work base, the liquid can be applied quickly to the side panel of the railway vehicle body.

[0015] This invention 3 A railway vehicle body washing device according to the type is: The first aspect described above or The 2 condition To In the railway vehicle body washing device described above, The above liquid pump comprises a first liquid pump and a second liquid pump. Of the multiple nozzles mentioned above, the nozzle located relatively high up is fluidically connected to the first liquid pump, but is not fluidly connected to the second liquid pump. Of the multiple nozzles mentioned above, the nozzle located relatively lower down is not fluidically connected to the first liquid pump, but is fluidically connected to the second liquid pump.

[0016] According to the above configuration, due to the fluid connection relationship between the first and second liquid pumps and the plurality of nozzles, when the second liquid pump is driven without driving the first liquid pump, liquid can be applied only to the lower part of the side plate of the vehicle body.

[0017] Conversely, when the first liquid pump is driven without driving the second liquid pump, liquid can be applied only to the upper part of the side plate of the vehicle body.

[0018] The vehicle body washing device for a railway vehicle according to the 4 aspect of the present invention is In the vehicle body washing device for a railway vehicle according to any one of the above first aspect to the 3 aspect, Each of the plurality of nozzles has a first injection part and a second injection part, The central axis of the first injection part and the central axis of the second injection part are non-parallel to each other, and a virtual plane including the central axis of the first injection part and the central axis of the second injection part is parallel to the horizontal plane.

[0019] Here, the virtual plane may be parallel or substantially parallel to the horizontal plane (for example, in a state where the inclination angle with respect to the horizontal plane exceeds 0 degrees and is within a range of 20 degrees or less). That is, the virtual plane may be substantially parallel to the horizontal plane.

[0020] According to the above configuration, since the central axis of the first injection part and the central axis of the second injection part are non-parallel to each other, and a virtual plane including the central axis of the first injection part and the central axis of the second injection part is parallel to the horizontal plane, liquid can be effectively applied to the bottom surface and the side surface of the recess formed in the side plate of the vehicle body of the railway vehicle.

[0021] The vehicle body washing device for a railway vehicle according to the fifth aspect of the present invention is In the vehicle body washing device for a railway vehicle according to the 4 aspect, The first and second injection units are positioned such that their central axes intersect with the direction of movement of the railway vehicle.

[0022] According to the above configuration, by arranging the first and second injection nozzles so that their central axes intersect with the direction of movement of the railway vehicle body, the effectiveness of applying liquid to the side surface of a protrusion can be increased when there is a recess in the side panel of the vehicle body. [Effects of the Invention]

[0023] As is clear from the above, the railway vehicle body washing device of the present invention can reduce the labor required when washing the side panels of the railway vehicle body. [Brief explanation of the drawing]

[0024] [Figure 1] This is a diagram illustrating the configuration of a railway vehicle body washing system according to one embodiment of the present invention. [Figure 2] This is a schematic plan view of the main components of the railway vehicle body washing system shown above. [Figure 3] This is a schematic diagram illustrating the method for cleaning the side panels of a railway vehicle's body. [Figure 4] This is another schematic diagram illustrating the method for cleaning the side panels of a railway vehicle's body. [Figure 5] This is a diagram illustrating a modified example of the railway vehicle body washing device shown above. [Figure 6] This is a schematic plan view of the main parts of another modified example of the railway vehicle body washing device described above. [Figure 7] This is a magnified view of a portion of Figure 6. [Figure 8] This is a schematic diagram illustrating the cleaning method for another modified example described above. [Modes for carrying out the invention]

[0025] The railway vehicle body washing device of the present invention will be described in detail below with reference to the illustrated embodiments.

[0026] Figure 1 shows a configuration diagram of a railway vehicle body washing device according to one embodiment of the present invention. In Figure 1, the spray pattern of water or oxalic acid solution is indicated by a dashed triangle.

[0027] The above-described railway vehicle body washing device comprises a water tank 11, a detergent tank 12, a first support member 21, first to fifth nozzles 31 to 35, first and second electric pumps 41 and 42, and a control device 51. Note that the water tank 11 is an example of a first liquid tank. The detergent tank 12 is an example of a second liquid tank. The first electric pump 41 is an example of a first liquid pump. The second electric pump 42 is an example of a second liquid pump.

[0028] Water tank 11 stores water, while detergent tank 12 stores oxalic acid solution. Water tank 11 and detergent tank 12 are fluidically connected to first and second electric pumps 41 and 42 via electric three-way valves 61. More specifically, water tank 11 is connected to the first suction port 61a of electric three-way valve 61 via piping L1. Detergent tank 12 is connected to the second suction port 61b of electric three-way valve 61 via piping L2. The discharge port 61c of electric three-way valve 61 is connected to the suction port 41a of the first electric pump 41 via piping L3, and also to the suction port 42a of the second electric pump 42 via piping L3 and L4. Note that the water in the water tank is an example of a liquid. The oxalic acid solution in detergent tank 12 is an example of a liquid and an example of a liquid detergent. Electric three-way valve 61 is an example of a three-way valve.

[0029] The electric three-way valve 61 is controlled by the control device 51 to switch between a state in which water flows from the water tank 11 to the first and second electric pumps 41 and 42, and a state in which oxalic acid solution flows from the detergent tank 12 to the first and second electric pumps 41 and 42.

[0030] The first support member 21 extends vertically. This first support member 21 has an upper portion 21a and a lower portion 21b located below the upper portion 21a. The upper portion 21a and the lower portion 21b are formed using different piping. In other words, the lower end of the piping constituting the upper portion 21a is directly joined to the upper end of the piping constituting the lower portion 21b, such that the central axis of the upper portion 21a coincides with the central axis of the lower portion 21b. The upper portion 21a is not in communication with the lower portion 21b.

[0031] The upper section 21a can be supplied with water or oxalic acid solution by the first electric pump 41. More specifically, the upper section 21a is connected to the discharge port 41b of the first electric pump 41 via piping L5, manifold piping L51, piping L6, solenoid valve 71, and piping L7.

[0032] Furthermore, the discharge port 41b of the first electric pump 41 is connected via piping L5 and manifold piping L51 to a flow path consisting of piping L11, solenoid valve 73, and piping L12. This flow path is connected to the second support member 22 (shown in Figure 2).

[0033] Furthermore, the discharge port 41b of the first electric pump 41 is connected via piping L5 and manifold piping L51 to a flow path consisting of piping L15, solenoid valve 75, and piping L16. This flow path is connected to the third support member 23 (shown in Figure 2).

[0034] Furthermore, the discharge port 41b of the first electric pump 41 is connected via piping L5 and manifold piping L51 to a flow path consisting of piping L19, solenoid valve 77, and piping L20. This flow path is connected to the fourth support member 24 (shown in Figure 2).

[0035] In short, the second to fourth support members 22 to 24 can also be supplied with water or oxalic acid solution by the first electric pump 41.

[0036] Solenoid valves 71, 73, 75, and 77 open and close in response to signals from the control device 51. For example, when the signal from the control device 51 indicates ON, solenoid valves 71, 73, 75, and 77 open, and pipes L6, L11, L15, and L19 communicate with pipes L7, L12, L16, and L20. Conversely, when the signal from the control device 51 indicates OFF, solenoid valves 71, 73, 75, and 77 close, and the communication between pipes L6, L11, L15, and L19 and pipes L7, L12, L16, and L20 is terminated. In other words, pipes L6, L11, L15, and L19 and pipes L7, L12, L16, and L20 are no longer in communication with each other.

[0037] The lower section 21b can be supplied with water or oxalic acid solution by a second electric pump 42. More specifically, the lower section 21b is connected to the discharge port 42b of the second electric pump 42 via piping L8, manifold piping L52, piping L9, solenoid valve 72, and piping L10.

[0038] Furthermore, the discharge port 42b of the second electric pump 42 is connected via piping L8 and manifold piping L52 to a flow path consisting of piping L13, solenoid valve 74 and piping L14. This flow path is connected to the second support member 22.

[0039] Furthermore, the discharge port 42b of the second electric pump 42 is connected via piping L8 and manifold piping L52 to a flow path consisting of piping L17, solenoid valve 76 and piping L18. This flow path is connected to the third support member 23.

[0040] Furthermore, the discharge port 42b of the second electric pump 42 is connected via piping L8 and manifold piping L52 to a flow path consisting of piping L21, solenoid valve 78 and piping L22. This flow path is connected to the fourth support member 24.

[0041] In short, water or oxalic acid solution can also be supplied to the second to fourth support members 22 to 24 by the second electric pump 42.

[0042] Solenoid valves 72, 74, 76, and 78 open and close in response to signals from the control device 51. For example, when the signal from the control device 51 indicates ON, solenoid valves 72, 74, 76, and 78 open, and pipes L9, L13, L17, and L21 communicate with pipes L10, L14, L18, and L22. Conversely, when the signal from the control device 51 indicates OFF, solenoid valves 72, 74, 76, and 78 close, and the communication between pipes L9, L13, L17, and L21 and pipes L10, L14, L18, and L22 is terminated. In other words, pipes L9, L13, L17, and L21 and pipes L10, L14, L18, and L22 are no longer in communication with each other.

[0043] The first to fifth nozzles 31 to 35 are attached to the first support member 21 and are arranged at equal intervals in the vertical direction. These first to fifth nozzles 31 to 35 have the same performance and each sprays water or oxalic acid solution in a conical shape. This makes it possible to increase the area over which water or oxalic acid solution is sprayed while reducing the overlap of the spray patterns of water or oxalic acid solution in a virtual vertical plane located at a predetermined horizontal distance from the first to fifth nozzles 31 to 35.

[0044] The first electric pump 41 is fluidically connected to the first to third nozzles 31 to 33, which are located relatively high among the first to fifth nozzles 31 to 35, but is not fluidically connected to the fourth and fifth nozzles 34 and 35, which are located relatively low among the first to fifth nozzles 31 to 35. In other words, the first electric pump 41 pumps water from the water tank 11 or oxalic acid solution from the detergent tank 12 to the first to third nozzles 31 to 33, but does not pump water to the fourth and fifth nozzles 34 and 35.

[0045] The second electric pump 42 is not fluidically connected to the first to third nozzles 31 to 33, which are located relatively higher among the first to fifth nozzles 31 to 35, but is fluidically connected to the fourth and fifth nozzles 34 and 35, which are located relatively lower among the first to fifth nozzles 31 to 35. In other words, the second electric pump 41 does not pump water from the water tank 11 or the oxalic acid solution from the detergent tank 12 to the first to third nozzles 31 to 33, but it does pump water to the fourth and fifth nozzles 34 and 35.

[0046] Furthermore, the first and second electric pumps 41 and 42 are driven and stopped in response to signals from the control device 51. When the first and second electric pumps 41 and 42 are driven, the pressure at which water or oxalic acid solution is discharged from the first and second electric pumps 41 and 42 is detected by a pressure sensor (not shown). At this time, the signal indicating the pressure detected by the pressure sensor is sent to the control device 51 and used for feedback control of the first and second electric pumps 41 and 42.

[0047] The control device 51 includes a CPU (Central Processing Unit), memory, etc., and is capable of individually controlling the first and second electric pumps 41 and 42, the electric three-way valve 61, and the solenoid valves 71 to 78. For example, the solenoid valves 71 and 72 are opened and closed by the control device 51. Such control is performed in response to an operator operating a switch on a control panel (not shown). In other words, the control device 51 controls the first and second electric pumps 41 and 42, etc., based on operation signals from the control panel.

[0048] Although not shown in the diagram, the second to fourth support members 22 to 24 also extend vertically, similar to the first support member 21.

[0049] Figure 2 shows a schematic diagram of the main components of the railway vehicle body washing system as viewed from above. In Figure 2, the spray pattern of water or oxalic acid solution is indicated by a dashed triangle.

[0050] The above-mentioned railway vehicle body washing device comprises first and third work bases 81 and 83 that are positioned opposite the left side panel of the body 102 of the railway vehicle 101 and extend horizontally, and second and fourth work bases 82 and 84 that are positioned opposite the right side panel of the body 102 of the railway vehicle 101 and extend horizontally. These first to fourth work bases 81 to 84 are structures resembling station platforms. Workers can, for example, check the washing status of the body 102 of the railway vehicle 101 from the first to fourth work bases 81 to 84.

[0051] The railway vehicle 101 enters the space between the first work base 81 and the second work base 82, or between the third work base 83 and the fourth work base 84, from one end of the first to fourth work bases 81 to 84 (see Figures 3 and 4). For this reason, rails (not shown) are laid on the ground between the first and third work bases 81 and 83 and the second and fourth work bases 82 and 84.

[0052] A first support member 21 is installed at one end of the first work base 81 so as to face the left side panel of the body 102 of the railway vehicle 101. The first to fifth nozzles 31 to 35 of this first support member 21 spray water or oxalic acid solution toward the second work base 82.

[0053] A second support member 22 is installed at one end of the second work base 82 so as to face the right side panel of the body 102 of the railway vehicle 101. Similar to the first support member 21, this second support member 22 is fitted with first to fifth nozzles (not shown) arranged at equal intervals in the vertical direction. The first to fifth nozzles of this second support member 22 spray water or oxalic acid solution toward the first work base 81.

[0054] A third support member 23 is installed at one end of the third work base 83 so as to face the left side panel of the body 102 of the railway vehicle 101. Like the first support member 21, this third support member 23 is fitted with first to fifth nozzles (not shown) arranged at equal intervals in the vertical direction. The first to fifth nozzles of this third support member 23 spray water or oxalic acid solution toward the fourth work base 84.

[0055] A fourth support member 24 is installed at one end of the fourth work base 84, facing the right side panel of the body 102 of the railway vehicle 101. Like the first support member 21, this fourth support member 24 is fitted with first to fifth nozzles (not shown) arranged at equal intervals in the vertical direction. The first to fifth nozzles of this fourth support member 24 spray water or oxalic acid solution toward the third work base 83.

[0056] The first to fourth work bases 81 to 84 are each constructed such that their horizontal length is longer than the length from the front to the rear of the railway vehicle 101.

[0057] In the railway vehicle body washing device with the above configuration, when the first to fifth nozzles 31 to 35 of the first support member 21 spray oxalic acid solution toward the left side panel of the railway vehicle body 102, the first to fifth nozzles 31 to 35 are arranged at equal intervals in the vertical direction, so the oxalic acid solution can be uniformly applied to the portion of the left side panel of the railway vehicle body 102 that the first support member 21 faces. Therefore, by moving the railway vehicle body 102 of the railway vehicle 101 horizontally relative to the first to fifth nozzles 31 to 35, the oxalic acid solution can be uniformly applied to the entire left side panel of the railway vehicle body 102, thus reducing the effort required when washing the left side panel of the railway vehicle body 102.

[0058] Using the first to fifth nozzles of the second to fourth support members 22 to 24 produces the same effect as using the first to fifth nozzles 31 to 55 of the first support member 21.

[0059] Also, the water tank 11 and detergent Since the tank 12 is fluidly connected to the first and second electric pumps 41 and 42 via an electric three-way valve 61, the electric three-way valve 61 can be operated to pump water from the water tank 11 to the first to fifth nozzles 31 to 35, or to pump oxalic acid solution from the detergent tank 12 to the first to fifth nozzles 31 to 35.

[0060] Furthermore, after pumping the oxalic acid solution from the detergent tank 12 to the first to fifth nozzles 31 to 35, pumping water from the water tank 11 to the first to fifth nozzles 31 to 35 allows the oxalic acid solution remaining between the piping L1 and the first to fifth nozzles 31 to 35 to be washed away. As a result, deterioration of the piping L3 and other parts downstream of the electric three-way valve 61 can be suppressed.

[0061] Furthermore, since the water or oxalic acid solution is pumped to the first to fifth nozzles 31 to 35 by the first and second electric pumps 41 and 42, a decrease in the spray pressure of the water or oxalic acid solution can be suppressed.

[0062] Furthermore, when the body 102 of the railway vehicle 101 is moved between the first and second work bases 81 and 82 from one end of the first and second work bases 81 and 82, the first and second support members 21 and 22 are installed at one end of the first and second work bases 81 and 82. This allows for faster application of the oxalic acid solution to both side panels of the body 102 of the railway vehicle 101 compared to when the first and second support members 21 and 22 are installed at the other end or intermediate part (the part between the one end and the other end) of the first and second work bases 81 and 82.

[0063] In this case, for example, even if the railway vehicle 101 does not advance beyond the other ends of the first and second work bases 81 and 82 because the rails are not installed in front of the other ends of the first and second work bases 81 and 82, the oxalic acid solution can be applied to the entire side panels of the body 102 of the railway vehicle 101 because the first and second support members 21 and 22 are installed at one end of the first and second work bases 81 and 82.

[0064] Furthermore, when the body 102 of the railway vehicle 101 is moved between the third and fourth work bases 83 and 84 from one end of the third and fourth work bases 83 and 84, the same effects and advantages as when the body 102 of the railway vehicle 101 is moved between the first and second work bases 81 and 82 from one end of the first and second work bases 81 and 82 are obtained.

[0065] Furthermore, the first electric pump 41 is fluidically connected to the first to third nozzles 31 to 33, which are located relatively higher among the first to fifth nozzles 31 to 35, but is not fluidically connected to the fourth and fifth nozzles 34 and 35, which are located relatively lower among the first to fifth nozzles 31 to 35.

[0066] On the other hand, the second electric pump 42 is not fluidically connected to the first to third nozzles 31 to 33, which are located relatively higher among the first to fifth nozzles 31 to 35, but is fluidically connected to the fourth and fifth nozzles 34 and 35, which are located relatively lower among the first to fifth nozzles 31 to 35.

[0067] Therefore, by keeping the first electric pump 41 stopped and driving the second electric pump 42, it is possible to apply water or oxalic acid solution only to the lower parts of the side panels of the body 102 of the railway vehicle 101.

[0068] Conversely, if the first electric pump 41 is driven while the second electric pump 42 is stopped, water or oxalic acid solution can be applied only to the upper parts of the side panels of the body 102 of the railway vehicle 101.

[0069] The following describes a method for cleaning all of the side panels of the body 102 of the railway vehicle 101, using Figures 3 and 4.

[0070] First, the operator presses the selection switch on the control panel to select the first and second work bases 81 and 82.

[0071] Next, as shown in Figure 3, the railway vehicle 101 is slowly moved forward towards the space between the first work base 81 and the second work base 82.

[0072] Next, just before the front of the railway vehicle 101 passes the first and second support members 21 and 22, the worker presses the first application switch on the control panel. This activates the first and second electric pumps 41 and 42, and opens all of the solenoid valves 71 to 74. At this time, the oxalic acid solution is flowed from the detergent tank 12 to the first and second electric pumps 41 and 42. electric The three-way valve 61 switches.

[0073] Next, immediately after the rear of the railway vehicle 101 has passed the first and second support members 21 and 22, the worker presses the stop switch on the control panel. This starts the flow of water from the water tank 11 to the first and second electric pumps 41 and 42. electric The three-way valve 61 switches. In this state, the first and second electric pumps 41 and 42 continue to operate for a predetermined time (for example, 20 to 30 seconds). After that, the first and second electric pumps 41 and 42 stop, and all of the solenoid valves 71 to 74 close.

[0074] Next, the railway vehicle 101 is stopped between the first work base 81 and the second work base 82, and the state in which the oxalic acid solution is applied to all of the side panels of the body 102 of the railway vehicle 101 is maintained for a predetermined time (for example, 20 to 30 minutes).

[0075] Next, the operator presses the first rinse switch on the control panel. This activates the second electric pumps 41 and 42, and opens all of the solenoid valves 71 to 74. At this time, the state of the electric three-way valve 61 remains unchanged.

[0076] Next, as shown in Figure 4, the railway vehicle 101 is slowly moved in reverse to exit from between the first work base 81 and the second work base 82.

[0077] Finally, immediately after the front of the railway vehicle 101 has passed the first and second support members 21 and 22, the worker presses the stop switch on the control panel. This stops the first and second electric pumps 41 and 42, and closes all of the solenoid valves 71 to 74. At this time, the state of the electric three-way valve 61 remains unchanged.

[0078] In this way, the operator only needs to operate a switch, so even if the railway car 101 consists of, for example, eight cars, washing and rinsing can be completed in about 30 to 60 minutes.

[0079] In contrast, if the railway car 101 consists of, for example, eight cars, it would take approximately eight hours for the washing and rinsing to be completed by manual labor.

[0080] Furthermore, when the stop switch on the control panel is pressed to stop the spraying of the oxalic acid solution, water flows for a set period of time through the flow path from the electric three-way valve 61 to the first to fifth nozzles 31 to 35, thereby suppressing deterioration of the piping L3 and other components that make up that flow path.

[0081] In the above embodiment, water was stored in the water tank 11, but any liquid other than water may be stored, as long as it is suitable for rinsing liquid detergent. For example, distilled water may be stored in the water tank 11, but tap water is preferable to distilled water in terms of cost.

[0082] In the above embodiment, oxalic acid solution was stored in the detergent tank 12, but other strongly acidic liquid detergents may be stored instead. Alternatively, a neutral or alkaline liquid detergent may be stored in the detergent tank 12.

[0083] In the above embodiment, solenoid valves 71 to 78 were used, but other automatic valves (e.g., proportional control valves) or manual valves may also be used.

[0084] In the above embodiment, the number of nozzles for each of the first to fourth support members 21 to 24 was five, but it may be two, three, or four. Alternatively, the number of nozzles for each of the first to fourth support members 21 to 24 may be six or more.

[0085] In the above embodiment, first to fifth nozzles 31 to 35 that spray water or oxalic acid solution in a conical shape were used, but multiple nozzles that spray in other shapes (for example, linear, square pyramidal, etc.) may also be used.

[0086] In the above embodiment, the first and second electric pumps 41 and 42 supplied water or oxalic acid solution to the first to fourth support members 21 to 24. However, for example, an engine pump may be used to supply water or oxalic acid solution to the first to fourth support members 21 to 24.

[0087] In the above embodiment, a single-car train 101 was being cleaned, but a train consisting of two or more cars may also be cleaned.

[0088] In the above embodiment, the operator pressed the selection switch on the control panel to select only the first and second work bases 81 and 82. However, the operator may also select only the third and fourth work bases 83 and 84, or select all of the first to fourth work bases 81 to 84.

[0089] By selecting only the third and fourth work bases 83 and 84, the railway vehicle 101 can be washed and rinsed between the third work base 83 and the fourth work base 84.

[0090] By selecting all of the first to fourth work bases 81 to 84, the railway vehicle 101 can be washed and rinsed between the first work base 81 and the second work base 82, and between the third work base 83 and the fourth work base 84.

[0091] In the above embodiment, the operator pressed the first application switch on the control panel to apply the oxalic acid solution to all of the side panels of the body 102 of the railway vehicle 101. However, the operator may also press the second application switch on the control panel to apply the oxalic acid solution only to the lower part of each side panel of the body 102 of the railway vehicle 101.

[0092] In the above embodiment, the operator pressed the first rinse switch on the control panel to apply water to all of the side panels of the body 102 of the railway vehicle 101. However, the operator may also press the second rinse switch on the control panel to apply water only to the lower part of each side panel of the body 102 of the railway vehicle 101.

[0093] In the above embodiment, since the number of nozzle connections of the second electric pump 42 is less than the number of nozzle connections of the first electric pump 41, the rated output of the second electric pump 42 may be lower than the rated output of the first electric pump 41. Alternatively, the rated output of the second electric pump 42 may be the same as the rated output of the first electric pump 41. In this case, if the first electric pump 41 fails, replacing it with a spare of the second electric pump 42 can suppress a decrease in cleaning capacity.

[0094] In the above embodiment, there were two pumps, but there may be one or three or more. If there is one pump, for example, as shown in Figure 5, the discharge port 41b of the first electric pump 41 may be connected to pipes L6, L9, L11, L13, L15, L19, and L21 via pipe L5 and manifold pipe L151.

[0095] In the above embodiment, the first to fifth nozzles 31 to 35 were arranged at equal intervals in the vertical direction, but they may not be arranged at equal intervals in the vertical direction. In this case, for example, the distance between the first nozzle 31 and the second nozzle 32 is the same as the distance between the second nozzle 32 and the third nozzle 33, while the distance between the third nozzle 33 and the fourth nozzle 34 is narrower. In this case, the fourth nozzle 34 is attached to the lower part 21b of the first support member 21, but the fifth nozzle 35 is not attached.

[0096] In the above embodiment, the first to fifth nozzles 31 to 35 of the first to fourth support members 21 to 24 each sprayed liquid in one direction, but as shown in Figure 6, they may be sprayed in two directions. More specifically, the first nozzle 31 may be replaced with the first and second spraying parts 131A and 131B, as shown in Figure 7.

[0097] The central axes of the first injection section 131A and the second injection section 131B are non-parallel to each other, and the virtual plane containing the central axes of the first injection section 131A and the second injection section 131B is parallel to the horizontal plane. The angle between the central axes of the first injection section 131A and the second injection section 131B is set to, for example, 45°.

[0098] The first and second spraying sections 131A and 131B each spray water or oxalic acid solution in a conical shape. At this time, the central axis of the spray shape of water or oxalic acid solution in the first spraying section 131A coincides with or approximately coincides with the central axis of the first spraying section 131A. Similarly, the central axis of the spray shape of water or oxalic acid solution in the second spraying section 131B coincides with or approximately coincides with the central axis of the second spraying section 131B.

[0099] Furthermore, the first and second injection units 131A and 131B are positioned such that their central axes intersect with the direction of movement of the railway vehicle 101 (the direction of the arrow in Figure 8).

[0100] When the first nozzle 31 of the first support member 21 is replaced with the first and second injection units 131A and 131B, although not shown in the figures, the second to fifth nozzles 32 to 35 of the first support member 21 may also be replaced with first and second injection units similar to the first and second injection units 131A and 131B, respectively.

[0101] If the first nozzle 31 of the first support member 21 is replaced with the first and second injection units 131A and 131B, and the second to fifth nozzles 32 to 35 of the first support member 21 are also replaced with first and second injection units similar to the first and second injection units 131A and 131B, respectively, then, although not shown in the figures, the second to fourth support members 22 to 24 may also be modified in the same way as the first support member 21.

[0102] As shown in Figure 8, when the first and second injection nozzles 131A and 131B are attached to the first support member 21, water or oxalic acid solution can be applied to a wide area of ​​the bottom and sides of the recess 102a formed in the side plate of the body 102 of the railway vehicle 101.

[0103] Furthermore, by arranging the first and second injection nozzles 131A and 131B such that their central axes intersect with the direction of movement of the railway vehicle body 102, water or oxalic acid solution can be sufficiently applied to the side surface of the recess 102.

[0104] The recessed portion 102a is a recess formed by the door and door frame, a recess formed by the window glass and window frame, and so on.

[0105] Although specific embodiments of this invention have been described, this invention is not limited to the above embodiments and their variations, and can be implemented with various modifications within the scope of this invention. For example, one embodiment of this invention may be one in which some of the contents described in the above embodiments are deleted or replaced. [Explanation of Symbols]

[0106] 11 Water Tanks 12 detergent tanks 21 First support member 22 Second support member 23 Third support member 24. Fourth support member 31 First nozzle 32 Second nozzle 33 Third Nozzle 34. The fourth nozzle 35. The fifth nozzle 41. First electric pump 42. Second electric pump 51 Control device 61 Electric three-way valve 81. First working base 82 Second working base 83 Third working base 84. Fourth working base 101 Railway Vehicles 102 Car body 102a Recess 131A First injection section 131B Second injection section

Claims

1. A liquid tank for storing liquid used to wash the body of a railway vehicle, A support member is provided to face the side panel of the above-mentioned railway vehicle body and extends in the vertical direction, Multiple nozzles are attached to the above-mentioned support member and are arranged at predetermined intervals in the vertical direction, A liquid pump that pressurizes the liquid in the liquid tank to the nozzle, A stationary car washing device equipped with, The above liquid tank comprises a first liquid tank for storing water and a second liquid tank for storing liquid detergent. The first liquid tank and the second liquid tank are fluidically connected to the liquid pump via a three-way valve. The above-mentioned liquid pump is characterized by pressurizing one of the water in the first liquid tank and the liquid detergent in the second liquid tank and spraying it onto the side panel of the vehicle body.

2. In the railway vehicle body washing device according to claim 1, The above-mentioned railway vehicle is provided with a work base that is positioned opposite to the above-mentioned side panel of the vehicle body and extends horizontally, A railway vehicle body washing device characterized in that the above-mentioned support member is installed at one end of the above-mentioned work base.

3. In the railway vehicle body washing device according to claim 1 or 2, The above liquid pump comprises a first liquid pump and a second liquid pump. Of the multiple nozzles mentioned above, the nozzle located relatively high up is fluidically connected to the first liquid pump, but is not fluidly connected to the second liquid pump. A railway vehicle body washing device characterized in that, among the multiple nozzles described above, the nozzle located relatively lower is not fluidically connected to the first liquid pump, but is fluidically connected to the second liquid pump.

4. In the railway vehicle body washing device according to claim 1 or 2, Each of the above-mentioned nozzles has a first injection section and a second injection section. A railway vehicle body washing device characterized in that the central axis of the first jetting section and the central axis of the second jetting section are non-parallel to each other, and the virtual plane containing the central axis of the first jetting section and the central axis of the second jetting section is parallel to the horizontal plane.

5. In the railway vehicle body washing device according to claim 4, A railway vehicle body washing device characterized in that the first and second jetting units are provided such that their central axes intersect with the direction of movement of the railway vehicle.

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