JP2022149461A - Snow melting device for railway vehicle - Google Patents

Abstract

To realize a snow melting device for a railway vehicle which allows snow melting work even if a part of pumps discharging liquid such as warm water breaks down.SOLUTION: A snow melting device 100 for a railway vehicle can perform snow melting work by injecting warm water from an injection nozzle 10 toward a carriage W although discharge pressure falls even when a part of injection pumps 20 does not work at prescribed output since the warm water can be discharged through a bypass piping 40 (first bypass piping 41, second bypass piping 42) with respect to the injection nozzle 10 corresponding to the injection pump 20. In short, the snow melting device 100 for a railway vehicle can continue the snow melting work even if a part of a plurality of equipped injection pumps 20 breaks down.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a snow melting device for railway vehicles.

Snow adheres to the bogies of railway vehicles traveling in snowy or snowy areas, and the adhered snow may fall during high-speed travel, damaging equipment on the tracks and the vehicle body. As a measure to prevent such damage, snow removal work is performed to remove snow adhering to the trolley.
Conventionally, snow removal work has been performed manually by many workers, but snow melting devices for railroad vehicles have been developed in order to improve work efficiency and save labor.
For example, as a device capable of performing snow melting work in a short period of time, there is known a snow melting device that injects hot water toward the bogie of a railway vehicle (see, for example, Patent Document 1).
This snow melting device is equipped with a plurality of robots arranged on the side of a railroad vehicle stopped at a station, and each robot sprays hot water toward its assigned carriage.

Japanese Utility Model Laid-Open No. 7-4223

However, in the case of the snow-melting device of Patent Document 1, if a failure occurs in the pump unit that supplies hot water to the robot, there may be a problem that the robot cannot perform the snow-melting work of the trolley that the robot is in charge of. .
It would be nice if the pump unit could be operated immediately by replacing the parts, etc., but if the parts are not available and must be ordered, it is necessary to rely on workers to remove the snow until the repair is completed. I had a problem with it disappearing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a snow-melting device for a railway vehicle that enables snow-melting work even if a part of a pump that feeds a liquid such as hot water fails.

In order to achieve the above object, the present invention
A snow melting device for a railway vehicle that ejects a liquid to a train formed by forming a plurality of cars with bogies arranged in front and behind to remove snow adhering to the bogies,
a plurality of injection nozzles provided corresponding to each of the trucks for injecting the liquid toward each truck;
a plurality of injection pumps provided for each of the injection nozzles for injecting the liquid from the injection nozzle;
a pumping pump that feeds the liquid from a storage tank in which the liquid is stored toward the plurality of injection nozzles and the plurality of injection pumps;
with
A bypass pipe is provided for switching to a state in which the liquid can be fed to the injection nozzle corresponding to the injection pump when the injection pump does not operate at a predetermined output.
Bogies are arranged on both the front and rear sides of the rolling stock of the rolling stock which is the target of the snow melting operation of the rolling stock snow melting device. That is, each vehicle has two trucks.
This snow melting device for railway vehicles includes a plurality of injection nozzles provided for each bogie of a plurality of vehicles for injecting liquid toward each bogie, and an injection pump provided for each of the plurality of injection nozzles. , a common pumping pump for feeding liquid toward a plurality of injection nozzles and a plurality of injection pumps.

With the railway vehicle snow melting device having such a configuration, even if a part of the injection pump does not operate, the liquid can be sent through the bypass pipe to the injection nozzle corresponding to the injection pump, so the liquid feeding pressure can be reduced. Although the liquid is lowered, the liquid can be sprayed toward the truck from the spray nozzle, and the snow melting operation can be continued.
In other words, this snow melting device for railway vehicles can perform the snow melting work even if some of the plurality of injection pumps equipped thereon fail.

Also preferably:
A first injection part for injecting a liquid toward the bogies on the end side of the train in the leading car and the rear car of the train, and a bogie for injecting the liquid toward the bogies on the connecting part side of the cars in the train. and a second injection part,
The first injection unit is provided with a first bypass pipe that connects a pipe between the pressure feed pump and the injection pump and a pipe between the injection pump and the injection nozzle,
A second bypass pipe that connects a pipe between the injection pump and the injection nozzle is provided in the second injection portion that is arranged adjacently in the connection portion of the vehicle and forms a pair,
A valve that is normally closed is provided in the middle of the first bypass pipe and the second bypass pipe,
When the injection pump that injects the liquid from the injection nozzle of the first injection section does not operate at a predetermined output, the liquid is sent to the injection nozzle side through the first bypass pipe by opening the valve. is configured as
When the injection pump that injects the liquid from one of the injection nozzles of the paired second injection units does not operate at a predetermined output, the valve is opened to allow the injection of the liquid through the second bypass pipe. The liquid is configured to be sent to the injection nozzle side.

For example, when the injection pump that injects the liquid from the injection nozzle of the first injection section does not operate at a predetermined output, the valve is opened and the liquid is sent to the injection nozzle side through the first bypass pipe, so the first injection section If the injection pump malfunctions, the liquid supply pressure will drop, but the liquid can be injected from the injection nozzle of the first injection unit toward the truck, and the snow melting operation can be continued.
In addition, when the injection pump that injects the liquid from one of the injection nozzles in the paired second injection section does not operate at a predetermined output, the valve is opened and the liquid is sent to the one injection nozzle side through the second bypass pipe. Therefore, in the event that one of the injection pumps of the second injection part malfunctions, the liquid feeding pressure will decrease, but the liquid can be injected from the injection nozzle of the second injection part toward the cart. and the snow melting work can be continued.

Also preferably:
The respective injection nozzles in the pair of second injection parts are arranged symmetrically so that the pipes are in close proximity to each other,
The injection nozzles have a plurality of ejection holes, and are arranged in rows along the direction in which the train extends.

By doing this, the second bypass pipe can be designed to be short and the liquid feeding path by the second bypass pipe can be shortened, so that the liquid is injected from one of the injection nozzles in the pair of second injection parts. When the injection pump does not operate, the liquid can be efficiently sent to the one injection nozzle side through the relatively short second bypass pipe.

ADVANTAGE OF THE INVENTION According to this invention, the snow-melting apparatus for railway vehicles which can perform snow-melting work even if some pumps which feed liquids, such as hot water, break down are obtained.

1 is a schematic diagram showing a snow melting device for a railway vehicle according to this embodiment; FIG. It is explanatory drawing (a) (b) regarding the 1st injection part of the snow melting apparatus for railway vehicles of this embodiment. It is explanatory drawing (a) (b) regarding the 2nd injection part of the snow melting apparatus for railway vehicles of this embodiment. It is explanatory drawing of the 2nd bypass piping in a 2nd injection part. It is explanatory drawing which shows the modification of a 2nd injection part.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a snow melting device for railway vehicles according to the present invention will be described in detail with reference to the drawings. However, although various technically preferable limitations are attached to the embodiments described below in order to carry out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.

The snow melting device 100 for railway vehicles according to the present embodiment sprays a liquid such as hot water to a train T formed by a plurality of vehicles V having bogies W arranged in front and behind the trains, and melts snow adhering to the bogies W. It is a device that removes
Carriages W are arranged on both front and rear sides of the vehicle V formed in the train T here. That is, each vehicle V is provided with two carriages W. As shown in FIG.

For example, as shown in FIG. 1, this snow melting device 100 for railway vehicles is provided corresponding to each of a plurality of trucks W, and includes a plurality of injection nozzles 10 for injecting warm water toward each truck W, and an injection A plurality of injection pumps 20 provided for each nozzle 10 for injecting hot water from the injection nozzle 10, and a pumping pump for feeding hot water from a warm water layer 50 in which hot water is stored toward the injection nozzle 10 and the injection pump 20. 30 and so on.
Predetermined pipes are provided in liquid feed paths such as between the injection nozzle 10 and the injection pump 20 , between the injection pump 20 and the pressure pump 30 , and between the pressure pump 30 and the hot water layer 50 .
A bypass pipe 40 is provided for switching to a state in which hot water can be sent to the injection nozzle 10 corresponding to the injection pump 20 when the injection pump 20 does not operate.
This bypass pipe 40 (the first bypass pipe 41 and the second bypass pipe 42) will be described later.
Here, the case where the injection pump 20 does not operate includes the case where the injection pump 20 does not operate completely (the liquid feeding output is zero), and the case where the injection pump 20 does not operate with a predetermined output (the predetermined liquid feeding output is not reached). not satisfied).

The railway vehicle snow melting device 100 also includes a control unit (not shown) that controls each part of the device.
This control unit (not shown) switches ON/OFF of the injection pump 20 and the pressure feed pump 30, and executes processing for switching operation and stop of the snow melting device 100 for railway vehicles. For example, when it is detected that the train T has stopped at a predetermined position on the station platform, the railway vehicle snow melting device 100 is activated and stopped after a predetermined time (for example, three minutes).
In addition, this control unit (not shown) acquires detection data from a sensor that detects, for example, the pressure and flow rate of hot water sent by the injection pump 20, and monitors whether the injection pump 20 is operating normally. Execute the processing to be performed.
For example, when the value of the detected data from the sensor is equal to or greater than the threshold value, the controller determines that the output of the injection pump 20 is good and that the injection pump 20 is operating normally.
On the other hand, if the value of the detected data from the sensor is less than the threshold value, the controller determines that the output of the injection pump 20 is low and that the injection pump 20 is not operating normally.
Sensors for detecting the pressure and flow rate of hot water supplied by the injection pumps 20 are installed downstream of the liquid supply paths of the injection pumps 20 .
In addition, the control unit (not shown) performs processing for switching between a state in which hot water cannot be delivered and a state in which hot water can be delivered by the bypass pipe 40, which will be described later.

Further, the snow melting device 100 for railway vehicles includes, for example, as shown in FIG. A heat source device 80 is provided, and hot water heated by the heat source device 80 is stored in a hot water layer 50 that is a storage tank.
Also, a pit P is provided to collect hot water jetted to the train T and water from melted snow. .

This snow melting device 100 for railway vehicles is a device used for removing snow from a train T stopped at a platform of a station, and is installed under the main line of a railway line.
Then, the injection nozzle 10 and the injection pump 20 are installed at locations where hot water can be injected toward the bogie W of the vehicle V of the train T when the train T stops at a predetermined position on the platform of the station.
FIG. 1 shows a 7-car train T in which 14 sets of injection nozzles 10 and injection pumps 20 are installed. One compressing pump 30 is provided for 14 sets of injection nozzles 10 and injection pumps 20 .
Here, one compressing pump 30 is provided for 14 pairs of injection nozzles 10 and injection pumps 20, but a sub compressing pump 30 may be provided.
Note that the railway vehicle snow melting device 100 is not limited to being installed under the main line of the railway line, and may be installed under the tracks of a depot, for example.
Further, the number of injection nozzles 10 and injection pumps 20 to be installed may be adjusted according to the number of vehicles V formed.

Next, the main part of the snow melting device 100 for railway vehicles according to the present embodiment will be described.

As shown in FIGS. 2 and 3, the snow melting device 100 for railway vehicles has a first injection section for injecting hot water toward the bogies W on the end side of the train T in the leading vehicle V and the rear vehicle V of the train T. 1 (see FIG. 2), and a second injection part 2 (see FIG. 3) for injecting warm water toward the bogie W on the side of the connecting part of the car V in the train T.
That is, in the snow melting device 100 for railway vehicles shown in FIG. The pump 20 corresponds to the second injection section 2 .

As shown in FIGS. 1, 2(a) and 2(b), the first injection unit 1 includes a pipe between the pressure feed pump 30 and the injection pump 20 and a pipe between the injection pump 20 and the injection nozzle 10. A connecting first bypass pipe 41 is provided.
The first bypass pipe 41 is provided with a valve 40a that is switched between opening and closing by remote control by a control unit (not shown).
By closing the valve 40a, the first bypass pipe 41 is switched to a state in which hot water cannot be sent. Further, the first bypass pipe 41 is switched to a state in which hot water can be fed by opening the valve 40a. The valve 40a is normally closed.

As shown in FIGS. 1, 3(a) and 3(b), a pipe between the injection pump 20 and the injection nozzle 10 is installed in the second injection unit 2 which is arranged adjacently at the connecting portion of the vehicle V and forms a pair. A second bypass pipe 42 is provided to connect the . In other words, the second injection units 2 are arranged in pairs, and the paired second injection units 2 are connected by the second bypass pipe 42 .
The second bypass pipe 42 is provided with a valve 40a that is switched between opening and closing by remote control by a control unit (not shown).
By closing the valve 40a, the second bypass pipe 42 is switched to a state in which hot water cannot be sent. Further, the second bypass pipe 42 is switched to a state in which hot water can be fed by opening the valve 40a. The valve 40a is normally closed.

Next, the snow melting work by the snow melting device 100 for railway vehicles of the present embodiment and the operation processing in the snow melting work will be described.

The railway vehicle snow melting device 100 is operated with the train T stopped at a predetermined position on the platform of the station. For example, when a train detection sensor or the like detects that a train T has stopped at a predetermined position on a platform of a station, the snow melting device 100 for railway vehicles is operated.
When the railway vehicle snow melting device 100 is activated, hot water is sent toward the first injection portion 1 and the second injection portion 2 by the pressure pump 30 .
In the first injection section 1 and the second injection section 2, hot water is injected from the injection nozzle 10 by the injection pump 20, and the hot water is injected toward the truck W at high pressure.
For example, when the liquid feeding pressure by the pressure feeding pump 30 is 0.24 [MPa] and the liquid feeding pressure by the injection pump 20 is 0.33 [MPa], the hot water from the injection nozzle 10 is 0.57 [MPa]. be jetted.
Thus, hot water is injected from each injection nozzle 10 (14 injection nozzles 10 in this embodiment) toward the truck W to melt the snow.
During the snow melting operation, the operating state of each injection pump 20 (14 injection pumps 20 in this embodiment) is monitored by a control unit (not shown) in the snow melting device 100 for railway vehicles.

Specifically, when the injection pump 20 of the first injection unit 1 is operating normally, the valve 40a of the first bypass pipe 41 is closed and the first bypass pipe 41 is switched to a state in which hot water cannot be sent.
Then, hot water is injected toward the truck W from the injection nozzle 10 at a predetermined pressure (for example, 0.57 [MPa]).

On the other hand, as shown in FIG. 2(b), when the injection pump 20 of the first injection section 1 is not operating normally, the valve 40a of the first bypass pipe 41 is opened and the first bypass pipe 41 is filled with warm water. is switched to a state in which liquid can be fed. At this time, the injection pump 20 that is not operating normally is stopped.
Then, hot water is jetted toward the carriage W from the injection nozzle 10 at a liquid feeding pressure (for example, 0.24 [MPa]) by the pressure feeding pump 30 .
Thus, when the injection pump 20 for injecting hot water from the injection nozzle 10 of the first injection section 1 does not operate, the hot water is sent to the injection nozzle 10 side through the first bypass pipe 41 .
In this way, when an abnormality occurs in the injection pump 20 of the first injection section 1, hot water can be injected toward the truck W from the injection nozzle 10 of the first injection section 1, although this is a provisional measure. Snow melting work can be continued.

When the injection pump 20 of the second injection unit 2 is operating normally, the valve 40a of the second bypass pipe 42 is closed, and the second bypass pipe 42 is supplied with hot water as shown in FIG. is switched to a state in which the liquid cannot be fed.
Then, hot water is injected toward the truck W from the injection nozzle 10 at a predetermined pressure (for example, 0.57 [MPa]).

On the other hand, as shown in FIG. 3(b), if one of the injection pumps 20 (in this case, the injection pump 20 on the right side in the figure) in the paired second injection units 2 is not operating normally, the The valve 40a of the second bypass pipe 42 is opened, and the second bypass pipe 42 is switched to a state in which hot water can be sent. At this time, the injection pump 20 that is not operating normally is stopped.
Then, the liquid feeding pressure (for example, 0.24 [MPa]) by the pressure feeding pump 30 and half the pressure (for example, 0.165 [MPa]) of the injection pump 20 in operation (here, the injection pump 20 on the left side in the figure) ]) (here, 0.405 [MPa]).
In this way, when the injection pump 20 for injecting hot water from one of the injection nozzles 10 in the paired second injection parts 2 does not operate, the hot water flows to the one injection nozzle 10 side through the second bypass pipe 42. It is configured to be liquid-fed.
In this way, when one of the injection pumps 20 of the second injection unit 2 malfunctions, it is possible to inject hot water from the injection nozzle 10 of the second injection unit 2 toward the truck W, although this is a temporary measure. and the snow melting work can be continued.

As described above, with the railway vehicle snow melting device 100 of the present embodiment, even if the injection pump 20 that injects hot water from the injection nozzle 10 malfunctions, the bypass pipe 40 (the first bypass pipe 41, the second Hot water can be sent to the injection nozzle 10 side through the bypass pipe 42), and the hot water can be injected toward the truck W from the injection nozzle 10.
As described above, the snow melting apparatus 100 for railway vehicles according to the present embodiment can perform the snow melting operation even if a part of the injection pump 20 that feeds hot water fails. Even if it is not possible, the snow melting work can be continued.

For example, if the pressure feed pump 30 is a general-purpose device and can be easily repaired or replaced, while the injection pump 20 is a special device such as an order product and cannot be easily repaired or replaced, such an arrangement may be used. The railway vehicle snow melting device 100 having the above configuration can be suitably used for snow melting work.

Further, with the railway vehicle snow melting device 100 of the present embodiment, by automating the operation of the railway vehicle snow melting device 100 when the train T stops at a predetermined position on the platform of the station, the operator is reduced. It becomes possible to melt snow without intervening.

It should be noted that the present invention is not limited to the above embodiments.
For example, as shown in FIG. 4, the injection nozzles 10 of the paired second injection units 2 are arranged symmetrically so that the pipes are located close to each other.
The jet nozzle 10 here has a plurality of jet holes 10a, which are arranged in rows along the direction in which the train T extends or in the direction in which the railroad tracks extend.
Specifically, the pipe of the injection nozzle 10 of the second injection unit 2 is arranged at a position corresponding to the connecting portion of the vehicle V, and the train T (track) extends in a direction away from the pipe. A long injection nozzle 10 having a plurality of injection holes 10a is provided so as to extend in the direction.
By doing so, the second bypass pipe 42 can be designed to be short, and the liquid feeding path by the second bypass pipe 42 can be shortened. When the injection pump 20 for injecting hot water from the injection nozzle 10 does not operate, hot water can be efficiently sent to the one injection nozzle 10 side through the relatively short second bypass pipe 42. - 特許庁

In the above embodiment, the first injection section 1 is provided with the first bypass pipe 41 and the second injection section 2 is provided with the second bypass pipe 42, but the present invention is limited to this. Instead, for example, as shown in FIG. 5, the second injection section 2 may be provided with a second bypass pipe 42 and a first bypass pipe 41 .

In addition, it goes without saying that other specific details such as the structure can be changed as appropriate.

1 first injection part 2 second injection part 10 injection nozzle 10a ejection hole 20 injection pump 30 pressure feed pump 40 bypass pipe 40a valve 41 first bypass pipe 42 second bypass pipe 50 hot water layer (storage tank)
60 Receiving tank 70 Water tank 80 Heat source machine 90 Dust remover 100 Snow melting device for railway vehicle T Train V Vehicle W Carriage P Pit

Claims (3)

A snow melting device for a railway vehicle that ejects a liquid to a train formed by forming a plurality of cars with bogies arranged in front and behind to remove snow adhering to the bogies,
a plurality of injection nozzles provided corresponding to each of the trucks for injecting the liquid toward each truck;
a plurality of injection pumps provided for each of the injection nozzles for injecting the liquid from the injection nozzle;
a pumping pump that feeds the liquid from a storage tank in which the liquid is stored toward the plurality of injection nozzles and the plurality of injection pumps;
with
A snow melting device for a railroad vehicle, wherein a bypass pipe is provided for switching to a state in which the liquid can be fed to the injection nozzle corresponding to the injection pump when the injection pump does not operate. A first injection part for injecting a liquid toward the bogies on the end side of the train in the leading car and the rear car of the train, and a bogie for injecting the liquid toward the bogies on the connecting part side of the cars in the train. and a second injection part,
The first injection unit is provided with a first bypass pipe that connects a pipe between the pressure feed pump and the injection pump and a pipe between the injection pump and the injection nozzle,
A second bypass pipe that connects a pipe between the injection pump and the injection nozzle is provided in the second injection portion that is arranged adjacently in the connection portion of the vehicle and forms a pair,
A valve that is normally closed is provided in the middle of the first bypass pipe and the second bypass pipe,
When the injection pump that injects the liquid from the injection nozzle of the first injection section does not operate, the liquid is sent to the injection nozzle side through the first bypass pipe by opening the valve. has been
When the injection pump for injecting the liquid from one of the injection nozzles of the paired second injection units does not operate, the valve is opened to allow the liquid to flow through the second bypass pipe to the side of the one injection nozzle. 2. The snow melting device for a railway vehicle according to claim 1, wherein said liquid is sent to said liquid. The respective injection nozzles in the pair of second injection parts are arranged symmetrically so that the pipes are in close proximity to each other,
3. The snow melting device for railway vehicles according to claim 2, wherein said injection nozzle has a plurality of ejection holes and is arranged in a row along the direction in which said train extends.

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