JP6008683B2 - Snow melting equipment for railway vehicles - Google Patents

Description

  The present invention relates to a snow melting device for a railway vehicle mainly for melting snow adhering to the railway vehicle.

  When a railway vehicle travels in a snowfall area, it is known that various problems are caused by snow adhering to the lower floor of the vehicle. For example, the snow that adheres to the lower floor of the vehicle melts, causing the ballast (crushed stones) to jump up when falling to the ground, damaging other vehicles that pass each other and causing damage to the railway lines outside the site. There is a problem to do.

  In addition, snow accumulated on the rails and melted water droplets may repeatedly adhere, and snow attached to the vehicle body may grow. In particular, when snow adheres to the skirt provided in the front-rear direction of the wheel so as to cover the wheel, the wheel may be interfered or the wheel may be damaged.

  These problems are as follows: (1) Snow that adheres to the snowfall area is easy to melt and fall as a lump when entering a warm area, and (2) When a railway vehicle operates at high speed, the snow is likely to rise. The ballast is likely to stick to the ball and the ballast is likely to jump up when the attached snow falls.

  Therefore, in order to prevent such snow from adhering to the railway vehicle, a railway vehicle that heats the ceramic plate by attaching a heating wire to the inside or surface of the ceramic plate and heats the heating wire to melt ice and snow. An ice and snow melting apparatus has been proposed (see, for example, Patent Document 1).

  On the other hand, various devices are installed in the lower part of the vehicle body (mainly in the lower part of the floor) in order to secure a passenger cabin space. Therefore, while traveling, the skirt portion is provided so that the ballast bounced up by the wheels does not damage the equipment at the bottom of the vehicle body, but in a railway vehicle traveling at high speed, to increase the strength of this skirt portion, The thing which attached the closing board to the skirt part is known.

JP 2009-18616 A

  However, since the ice and snow melting device of Patent Document 1 is configured with the ceramic flat plate exposed, the strength against weak collisions such as ballast is weak, and the ice and snow melting device breaks down during driving, There is also a possibility that the device itself peels from the skirt.

  Furthermore, since the ice and snow device has an integrated structure of the ceramic plate, the heating wire, and the far infrared ray generator as its casing, it is necessary to replace the entire ice and snow melting device when there is a problem with any of them, There will be a cost.

  In addition, in order to ensure strength, it is possible to increase the strength by installing the ice and snow device on the skirt and attaching a closing plate from above, but in that case, heat is transferred to the closing plate via the ceramic plate. Therefore, it is difficult for heat to be transmitted to the closing plate, and a sufficient ice / snow melting function cannot be expected.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a snow melting device for a railway vehicle that can protect a linear heater, can be easily maintained, and can efficiently transfer heat to a closing plate.

  A snow melting device for a railway vehicle according to the present invention is a snow melting device for a railway vehicle for melting ice and snow adhering to the lower part of the body of the railway vehicle, and the snow melting device for the railway vehicle includes a linear heater, a casing, and a closing plate. The casing includes a first surface on the vehicle body side in the longitudinal direction of the vehicle, a second surface that is closed by the closing plate on the opposite side of the first surface, and the second surface side And a guide groove for attaching the linear heater, and the linear heater is covered with the casing and the closing plate.

  According to this configuration, a railcar snow melting device can be easily assembled by a worker by simply arranging a linear heater in the guide groove and covering the guide plate, and the railcar snow melting device assembled in advance at the work site or the like. Can be attached to the body as it is. As a result, it is possible to melt the ice and snow adhering to the lower part of the vehicle body of the railway vehicle. Here, icy snow refers to ice or snow, and includes icy snow that has been squeezed or partially melted. Further, since the linear heater can be installed in a state covered with the casing and the closing plate, the linear heater is protected from ballast and the like. The closing plate is a plate for protecting the linear heater and other devices from stones and snow blocks. In addition, since the linear heater, the casing, and the closing plate can be separated from each other, if any of them is damaged, only the damaged portion can be replaced, and maintenance is easy.

  Here, the linear heater is, for example, a flexible long heater capable of meandering such as a cord-shaped heater having a circular cross section or a tape-shaped heater in which a heating element is incorporated and the outside is covered with a heat-resistant fiber. Good. On the other hand, a guide groove is provided on the second surface that is in contact with or close to the closing plate, and the linear heater is disposed here, so that the distance between the closing plate and the linear heater is short, and heat is applied to the entire closing plate. Easy to communicate.

  Further, it is preferable that the guide groove includes a plurality of linear grooves having both ends opened, and a space for folding the linear heater is formed outside the both ends opening of the linear groove.

  According to this configuration, for example, among the plurality of linear grooves, the linear heater is attached from one opening of the linear groove at the end portion to the linear groove, and the linear heater protruding from the other opening is U-shaped. Then, the linear heaters are attached to the respective linear grooves in order such that the linear grooves are attached to the linear grooves from one opening of the adjacent linear groove. In this way, the linear heater is uniformly arranged throughout the casing. In addition, since the portion folded back in a U-shape is a space, the linear heater can be bent without difficulty.

  Since the present invention is configured as described above, it is possible to provide a snow melting device for a railway vehicle that can protect the linear heater, can be easily maintained, and can efficiently transmit heat to the closing plate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial side view of a vehicle body for explaining an attachment position of a railway vehicle snow melting device according to a first embodiment. It is a front view of the state which installed the snow melting apparatus for railway vehicles in the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS (a) is the perspective view from the front side of the railway vehicle snow melting apparatus of Embodiment 1. FIG. (B) is the perspective view from the back side of the snow melting apparatus for rail vehicles. (A) is a front view of the state which removed the closing board of the snow melting apparatus for rail vehicles of Embodiment 1. FIG. (B) is AA sectional drawing of FIG. (C) is the elements on larger scale of (b). It is a disassembled perspective view which shows the main structures of the snow melting apparatus for railway vehicles of Embodiment 1. FIG. It is a perspective view of the closing board of the snow melting apparatus for railway vehicles of Embodiment 1. (A) It is a perspective view of the tape heater of the snow melting apparatus for rail vehicles of Embodiment 1. FIG. (B) It is the BB sectional drawing. (C) It is CC sectional drawing. It is a perspective view which shows the structure of the casing of the snow melting apparatus for rail vehicles of Embodiment 2, a closing board, and a heat insulation member. It is a perspective view of the casing of the snow melting apparatus for railway vehicles of Embodiment 2. (A) It is a perspective view of the aluminum type | mold material of the casing of the snow melting apparatus for rail vehicles of Embodiment 2. FIG. (B) It is a perspective view of the state which attached the tape heater to the guide groove of the aluminum type | mold material. It is a perspective view of the closing board of the snow melting apparatus for railway vehicles of Embodiment 2. (A) It is a front view of the heat insulation member attached to the vehicle body installation surface of the casing of the snow melting apparatus for rail vehicles of Embodiment 2. FIG. (B) It is a front view of the heat insulation member attached to a side surface same as the above. (C) It is a front view of the heat insulation member attached to the same lower side. It is a perspective view of the state which attached the linear heater to the casing of the snow melting apparatus for railway vehicles of Embodiment 2. (A) It is a front view of the state which attached the closing board in FIG. (B) It is a figure which shows the tape heater attachment state of the state which attached the same closing board and tape heater.

  Embodiments of a snow melting device for railway vehicles according to the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

<1. Embodiment 1>
[1-1. Installation position of snow melting equipment for railway vehicles]
FIG. 1 is a side view of a vehicle body 201 of a railway vehicle for explaining a mounting position of a railway vehicle snow melting device 1 or 110 according to an embodiment of the present invention. As shown in FIG. 1, the wheels 203 disposed on the lower floor 202 of the vehicle body 201 are partitioned by wheel skirt portions 204 and 205 facing in the front-rear direction. The wheel skirt portions 204 and 205 are provided to protect various devices arranged in the lower floor 202 from a ballast and the like jumped up by the wheels 203. On the other hand, when the railway vehicle travels in a snowy area, snow adheres to the wheel skirt portions 204 and 205 due to the snow rising by the wheels 203 or the like.

  The railcar snow melting device 1 or 110 is attached to the surface of the wheel skirts 204 and 205 with bolts over the entire vehicle width direction X. By attaching the snow melting device 1 or 110 for a railway vehicle, it is possible to prevent the snow from adhering to the wheel skirt portions 204 and 205 and to remove the adhering snow at an early stage by heat. At the same time, equipment under the floor can be protected from ballast and the like.

  The railcar snow melting device 1 or 110 may be attached to the vehicle body side surface of the vehicle body skirt portion 206 located in the lower floor periphery of the vehicle body 201 in addition to the wheel skirt portions 204 and 205. If the railway vehicle snow melting device 1 or 110 is attached to the part, snow and ice attached to the vehicle body skirt portion 206 can be peeled off due to various factors other than the snow rising by the wheels.

  In addition, although the case where the snow melting apparatus for railway vehicles was attached to the said wheel skirt part was demonstrated, an attachment position is not limited to this, You may attach to a vehicle body side part inner side, a trolley side, and a vehicle body bottom part.

  FIG. 2 is a front view of a state in which a snow melting device for a railway vehicle is installed on a vehicle body. As shown in FIG. 2, the railway vehicle snow melting device 1 or 110 is attached to the skirt portions 204 and 205 over the entire vehicle width direction X as described above. A three-part configuration in the vehicle width direction X may be configured by railway vehicle snow melting devices 1L, 1C, 1R (110L, 110C, 110R). Since L, C, and R of these snow melting apparatuses for railway vehicles have the same main structure, the following description will be made in common as railway snow melting apparatus 1 (110).

[1-2. Configuration of snow melting device 1 for railway vehicles]
FIG. 3 is a perspective view of the snow melting device 1 for railway vehicles. Fig.4 (a) is the front view which removed the closing board of the snow melting apparatus 1 for the railway vehicles. FIG. 4B is a cross-sectional view taken along AA in FIG. FIG.4 (c) is the elements on larger scale of (b). FIG. 5 is an exploded perspective view showing a main configuration of the snow melting device 1 for the railway vehicle.

  As shown in FIG. 3, the snow melting device 1 for a railway vehicle has a wave shape at the front in the vehicle longitudinal direction Z and a plane shape at the back. The snow melting device 1 for a railway vehicle has a casing 2, an outer box 3, a closing plate 4, and a tape heater 5 (linear heater) as main components. Hereinafter, the casing 2, the outer box 3, the closing plate 4, and the tape heater 5 will be described.

(1-2-1. Casing)
As shown in FIGS. 4 and 5, the casing 2 includes a plate-like base portion 21, a frame portion 22 erected from the periphery thereof, and a raised portion erected from the base portion 21 so as to be surrounded by the frame portion 22. 23. The casing 2 includes a first surface 2 a that is the back surface of the base portion 21, and a second surface 2 b that is the front surface of the raised portion 23. The raised portion 23 protrudes from the base portion 21 in the vehicle longitudinal direction Z, and a plurality of rod-like portions 23a extending in the vehicle vertical direction Y are continuous in the vehicle width direction X (see FIG. 4A), and the front surface as a whole. A corrugated shape is formed, which corresponds to a corrugated closing plate 4 described later (see FIG. 4B).

  Moreover, as shown to Fig.4 (a), the rod-shaped part 23a is extended in the vehicle up-down direction Y, and one front-end | tip is curving. The plurality of rod-like portions 23a are alternately shifted in the vehicle vertical direction Y and formed continuously in the vehicle width direction X, and the adjacent rod-like portions 23a are arranged so that the curved tips are upside down. .

  Further, a linear groove 24a is formed at the boundary between the adjacent rod-shaped portions 23a. The linear groove 24a forms a guide groove 24 that extends in the vehicle vertical direction Y and is open at both ends. The linear groove 24a has a vertically long cross section, and a tape heater 5 described later can be mounted vertically (see FIG. 4B).

  A space 25 for folding the tape heater 5 is provided outside the openings at both ends of the linear groove 24a. The space 25 is surrounded by the closing plate 4, the base portion 21, the frame portion 22, and the raised portion 23 in a state where the closing plate 4 is attached to the casing 2.

  Further, notches 26 and 27 for disposing the waterproof sealing portion 52 and the bushing 54 of the tape heater 5 are provided on both sides of the frame portion 22 in the vehicle width direction X. Further, water drain holes 28 are provided on both side portions of the frame portion 22 in the vehicle vertical direction Y, and water when water enters the casing 2 is drained. Further, the base portion 21 is provided with an insertion port 29 through which the power cord 53 of the tape heater 5 is passed in order to supply power to the tape heater 5.

  Moreover, the casing 2 of this embodiment consists of foamed resin which compounded polyolefin, such as polyethylene, to polystyrene as an example, is flame-retardant and has high heat insulation, is lightweight, and is excellent in workability. The casing 2 is not limited to this, and may be other foamed resin or other material, and is preferably a flame retardant or non-flammable material with high heat insulation.

  Moreover, the railway vehicle snow melting apparatus 1 of this embodiment has the aluminum sheet 6 disposed between the linear groove 24a of the casing 2 and the tape heater 5 (see FIG. 4C). The aluminum sheet 6 of the present embodiment has a hat shape along the linear groove 24 a, and is disposed in each linear groove 24 a, and a portion protruding from the linear groove 24 a comes into contact with the closing plate 4. Since the aluminum sheet 6 has high thermal conductivity, the heat of the tape heater 5 is easily blocked and transmitted to the plate 4. The aluminum sheet 6 serves to radiate the heat of the tape heater 5 appropriately, in addition to transferring heat to the closing plate 4. That is, the heat of the tape heater 5 is prevented from being excessively trapped in the casing 2 such as the linear groove 24a, and the heat generation performance of the tape heater 5 is prevented from being lowered.

(1-2-2. Outer box)
As shown in FIG. 5, the outer box 3 has a rectangular box shape that is open on the side opposite to the vehicle body installation surface in the vehicle longitudinal direction Z, and is configured to accommodate the casing 2. The outer box 3 includes a plate-like base portion 31 and a frame portion 32 erected on the front side in the vehicle longitudinal direction Z from the periphery of the base portion 31. The casing 2 is stored in a space surrounded by the base portion 31 and the frame portion 32. Further, the base portion 31 is provided with an insertion port 33 at a position corresponding to the insertion port 29 of the casing 2, and a cord holding portion 34 for holding the power cord 53 of the tape heater 5 is provided there.

  Further, the frame portion 32 has a corrugated shape on both sides in the vehicle vertical direction Y so as to correspond to the shape of the closing plate 4, and a through-hole 35 for fastening the closing plate 4 and the bolt to the both sides. And through holes 36 for fastening bolts to the skirt portions 204 and 205 of the vehicle body. In addition, a drainage hole 37 is formed in the lower portion of the frame portion 32 at a position corresponding to the drainage hole 28 of the casing 2.

  The outer box 3 of the present embodiment is made of, for example, FRP or stainless steel, has high strength, and protects the casing 2 together with the closing plate 4. The outer box 3 is not limited to FRP or stainless steel, but may be other materials, and a material having high strength is preferable.

(1-2-3. Blocking plate)
As shown in FIG. 6, the closing plate 4 is a corrugated corrugated plate in which horizontal planes and slopes are alternately combined, and the cross section has trapezoidal convex portions and concave portions, and the frame portion of the outer box 3. The closing plate 4 is attached to or close to the second surface 2b of the casing 2 in a shape along the surface 32 and the second surface 2b which is the surface of the casing 2. Further, the closing plate 4 has a through hole 41 for fastening the bolt with the outer box 3 and a through hole 42 for fastening the bolt with the skirt portions 204 and 205.

  The closing plate 4 of the present embodiment is made of a stainless material as an example, has high thermal conductivity and high strength, protects the casing 2, and receives the heat from the tape heater 5 to raise the temperature of the closing plate 4. That is, the closing plate 4 protects the tape heater 5 and other devices from ballast, snow blocks, etc., and also functions as a heating surface for melting snow and ice that have landed on the snow. The closing plate 4 is not limited to a stainless steel material, but may be other materials, preferably a material having high thermal conductivity and high strength.

(1-2-4. Tape heater)
As shown in FIG. 7, in the tape heater 5, one end portion of the tape-like heat generating portion 51 and the power cord 53 are connected by a bushing 54, and the other end portion of the heat generating portion 51 is connected to the sealing portion 52. The bushing 54 and the sealing portion 52 are made of a soft PVC material.

  The heat generating portion 51 has two conductors 55 on both sides inside, and the heat generating elements 56 are connected to the conductors 55 at a pitch of 35 mm. The conductor 55 and the heating element 56 are formed in a tape shape in a state where the conductor 55 and the heating element 56 are covered with the insulating material 57. The heat generating element 56 generates heat and heat is conducted to the conductor 55, so that the temperature of the entire heat generating portion 51 rises. The conductor 55 is composed of a tin-plated mild steel rope, and the heating element 56 is composed of a barium titanate-based PTC ceramic element. In the present embodiment, the tape heater 5 is used. However, the present invention is not limited to this, and a flexible long heater that can meander, such as another tape heater or a cord heater having a circular section, may be used. Good.

[1-3. Tape heater mounting method]
Next, a method for attaching the tape heater 5 to the railway vehicle snow melting device 1 will be described with reference to FIG.

(1-3-1. Step 1)
First, the sealing portion 52 of the tape heater 5 is fitted into the notch 26 of the casing 2. Then, the heat generating part 51 following the sealing part 52 is arranged over the rightmost linear groove 24a constituting the guide groove 24, and the heat generating part 51 jumping out from the end of the linear groove 24a is replaced with the rod-shaped part 23a. It is folded back in the space 25 so as to be along the curved tip, and the heat generating portion 51 is arranged from the start end of the rightmost straight groove 24a. Similarly, the heat generating portion 51 is arranged in the linear groove 24a, the heat generating portion 51 is folded back in the space 25, and is further arranged in the adjacent linear groove 24a. By repeating this in order, the heat generating portions 51 of the tape heater 5 are arranged in all the linear grooves 24a constituting the guide groove 24.

  Finally, the bushing 54 connected to the heat generating part 51 protruding from the end of the leftmost linear groove 24 a is fitted into the notch 27 of the casing 2, and the power cord 53 following the bushing 54 is passed through the insertion port 29.

  At this time, since the cross section of the linear groove 24a is vertically long, the tape heater 5 is mounted vertically (see FIG. 4B), and the tip of the rod-shaped portion 23a is curved. In the space 25, the heat generating portion 51 can be arranged without twisting.

(1-3-2. Step 2)
Next, the casing 2 in which the tape heater 5 is arranged is stored in the outer box 3. Specifically, the power cord 53 that has jumped out from the insertion port 29 of the casing 2 is passed through the insertion port 33 and the cord holding portion 34 of the outer box 3, and the first surface 2 a of the casing 2 is placed on the outer box 3. The casing 2 is stored so as to be surrounded by the frame portion 32 in accordance with the surface of the base portion 31.

(1-3-3. Step 3)
Next, the closing plate 4 is fixed. A closing plate 4 is arranged on the outer box 3 in which the casing 2 is accommodated so as to cover the opening of the outer box 3 and the second surface 2 b of the casing 2, and the bolt 71 is closed and the through hole 41 of the outer plate 4 and the outer box 3. And is fastened with a nut 72. As a result, the closing plate 4 and the outer box 3 are bolted together, and the snow melting device 1 for a railway vehicle in which the casing 2 and the tape heater 5 are housed is obtained.

(1-3-4. Step 4)
Then, the railcar snow melting device 1 assembled in advance is placed on the skirts 204 and 205 of the car body 201, and the power plug of the power cord 53 coming out of the outer box 3 is continued to the power source arranged at the lower part of the car body floor. After connecting to the connector (not shown), the snow melting apparatus 1 for railcars is fastened and fixed to the skirt portions 204 and 205 with bolts (not shown).

[1-4. Effect of Embodiment 1]
As described above, the railway vehicle snow melting device 1 according to the present embodiment can be easily obtained by placing the tape heater 5 in the guide groove 24 provided in the casing 2 and covering the tape heater 5 with the outer box 3 and the closing plate 4. The railway vehicle snow melting apparatus 1 can be assembled, and the railway vehicle snow melting apparatus 1 assembled in advance at a work place or the like can be directly attached to the vehicle body. In addition, the guide groove 24 is provided on the second surface 2b of the casing 2 near the closing plate 4 and the tape heater 5 is installed there. Therefore, the closing plate 4 and the tape heater 5 come into contact with or close to each other, and the closing is performed. Heat can be efficiently transferred to the plate 4. Moreover, since the tape heater 5 is covered with the casing 2, the outer box 3, and the closing plate 4, the tape heater 5 can be protected from ballast or the like.

  In addition, since the casing 2, the outer box 3, the closing plate 4, and the tape heater 5 can be separated from each other, even if any of them is damaged, only the damaged portion needs to be replaced. Further, the guide groove 24 is composed of a plurality of linear grooves 24a extending over the entire casing 2, and the tape heater 5 is attached to the casing 2 by being sequentially folded back. Therefore, the tape heater 5 can be disposed on the entire casing 2, and a snow melting device for railway vehicles. The whole 1 can be heated substantially uniformly. Further, since the cross section of the guide groove 24 is vertically long, the tape heater 5 can be mounted vertically and the tip of the rod-shaped portion 23a is curved. It can be bent and arranged.

  Further, since the casing 2 is made of a foamed resin material having high heat insulating properties, it is difficult for the heat of the tape heater 5 to escape. Further, an aluminum sheet 6 having a high thermal conductivity is disposed between the guide groove 24 and the tape heater 5, and a part of the aluminum sheet 6 is in contact with the closing plate 4. It is easy to block heat to the plate 4. In addition, the aluminum sheet 6 radiates heat moderately, suppresses excessive heat accumulation in the casing 2, and suppresses a decrease in heat generation performance of the tape heater 5. Moreover, since the casing 2 consists of a flame-retardant foaming resin material, its safety is high.

<2. Second Embodiment>
[2-1. Configuration of Snow Melting Device 110 for Railway Vehicles]
FIG. 8 is a perspective view illustrating a configuration of a casing, a closing plate, and a heat insulating member in the snow melting apparatus 110 for a railway vehicle according to the second embodiment. The railway vehicle snow melting device 110 includes a casing 120, a closing plate 130, a heat insulating member 140, and a tape heater 5. Hereinafter, the casing 120, the closing plate 130, and the heat insulating member 140 will be described. In addition, about the structure similar to 1st Embodiment, such as the tape heater 5, etc., since it is the same structure as 1st embodiment, description is abbreviate | omitted.

(2-1-1. Casing)
As shown in FIGS. 9 and 10, the casing 120 continuously connects an aluminum mold 121 composed of a raised portion 127 having a rectangular cross section combined with a trapezoid and a plate-like base portion 126. It is configured together. Hollow portions 121 a and 121 b are provided in the raised portion 127 of the aluminum mold 121, and a guide groove 122 having a semi-elliptical cross section for arranging the heat generating portion 51 of the tape heater 5 on each surface in contact with the closing plate 130. Is provided. The guide groove 122 includes a plurality of linear grooves 122a to 122d.

  In addition, on both sides of the aluminum mold member 121, a convex portion 123 and a concave portion 124 for connecting to each other are provided on the left and right, respectively, and through holes for bolt fastening are formed in the convex portion 123 and the concave portion 124. Yes. The aluminum mold members 121 are joined together by fitting the convex portion 123 and the concave portion 124 and screwing the bolt from the upper surface.

  The aluminum mold 121 is provided with spaces 125 (125a, 125b) for folding the tape heater 5. The space 125 does not have the raised portion 127 and has only the plate-like base portion 126 on the bottom surface, and is surrounded by the closing plate 130, the base portion 126, and the raised portion 127 in a state where the closing plate 130 is installed in the casing 120. It is space.

  In addition, the space 125b of the aluminum mold member 121 disposed on both sides in a state where the plurality of aluminum mold members 121 are assembled in the casing 120 is wider than the space 125b of the other aluminum mold member 121, and is cut out in the base portion 126. 128 is provided. This is because the aluminum mold 121 other than both sides only needs to have sufficient space 125b for folding the tape heater 5, whereas the space 125b of the aluminum mold 121 on both sides is sealed at the tip of the tape heater 5. This is because the stopper 52 and the power cord 53 are arranged, and the notch 128 is for a handle.

  Furthermore, the base 126 located under the space 125b of the aluminum mold 121 on the end side has an insertion port 129. The insertion port 129 is a power cord of the tape heater 5 when the tape heater 5 is installed. 53 is provided for connecting a power plug to a battery under the floor or a connector portion continuing from the battery. The casing 120 is provided with through holes for fastening bolts to the closing plate 130, the heat insulating member 140, and the skirt portions 204 and 205 described below.

(2-1-2. Blocking plate)
As shown in FIG. 11, the closing plate 130 is a corrugated corrugated plate in which a horizontal surface and a slope are alternately combined, and a cross section of a trapezoidal convex portion and a concave portion appear alternately, and is a surface of the casing 120. The clogging plate 130 can be attached to the capped surface 120b of the casing 120 without a gap in a shape along the capped surface 120b (second surface). Further, on both sides of the closing plate 130, notches 138 that can be used as handles are provided at positions corresponding to the notches 128 so that workers can easily work. The closing plate 130 has through holes for fastening the casing 120 and the skirt portions 204 and 205 with bolts.

(2-1-3. Heat insulation member)
As shown in FIG. 12, the heat insulating member 140 includes a heat insulating member 141 attached to the installation surface 120 a (first surface) side of the casing 120 with the vehicle body 201, and upper and lower surfaces in a state of being installed on the vehicle body 201 of the casing 120. There are heat insulating members 142 and 143 to be attached. These heat insulating members 141 to 143 are FRP plate members having a surface corresponding to a mounting surface with the casing 120. In addition to the installation of the heat insulating member 140, a heat insulating paint may be applied to the casing 120. In short, it suffices if wasteful heat radiation from a surface other than the surface to which snow is attached (covered surface 120b) can be suppressed. This is to suppress wasteful heat dissipation to promote heat dissipation from the surface to which snow adheres and to use heat effectively.

  Furthermore, the heat insulating member 141 is provided with an insertion port 149 at a position corresponding to the insertion port 129 provided in the aluminum mold 121 at one end of the casing 120. This insertion port 149 is for inserting the power cord 53, similarly to the insertion port 129. Further, on both sides of the heat insulating member 141, notches 148 are provided at positions corresponding to the notches 128 and the notches 138. The heat insulating member 140 has a through hole for fastening the casing 120 and the skirt portions 204 and 205 with bolts.

[2-2. Tape heater mounting method]
Next, a method for attaching the tape heater 5 to the railway vehicle snow melting device 110 will be described with reference to FIGS. Here, a description will be given using a casing 120 'having a configuration in which five aluminum mold members 121A to 121E are coupled. In addition, the same code | symbol is attached | subjected about the structure similar to the said embodiment.

(2-2-1. Step 1)
First, the tape heater 5 is arranged in the space 125b of the aluminum mold 121A, and the power plug side of the power cord 53 is inserted through the insertion port 129 in advance. Then, the heat generating portion 51 following the power cord 53 on the side opposite to the power plug side is arranged over the straight groove 122b of the aluminum mold member 121A, and the heat generating portion 51 jumping out from the end of the linear groove 122b is twisted to form a space 125a. And the heat generating portion 51 is disposed so as to extend from the start end of the linear groove 122c over the linear groove 122c. Similarly, the heat generating portion 51 is arranged in a straight groove 122c, and the heat generating portion 51 is twisted back in the space 125b and arranged in the adjacent straight groove 122d.

  Subsequently, the heat generating portion 51 protruding from the end of the linear groove 122d of the aluminum mold 121A is twisted, folded back in the space 125a, and disposed so as to lie along the linear groove 122a of the aluminum mold 121B. In the same manner, the heat generating portion 51 is arranged so as to extend over each linear groove.

  Finally, the sealing part 52 connected to the tip of the heat generating part 51 protruding from the end of the linear groove 122d of the aluminum mold 121E is installed on the base part 126 located below the space 125b.

  In addition, the reason why the heat generating portion 51 is twisted and folded in the space 125a and the space 125b is to make the tape-shaped heat generating portion 51 vertical so that the radius of curvature at the time of folding is reduced and stored in a compact manner. In this embodiment, since the space | interval of each linear groove | channel 122a-d of the casing 120 is narrow, the tape heater which can make the curvature radius of a return | turnback small by twisting is used.

  In addition, when the space of the folded portion can be sufficiently secured or when the interval between the linear grooves can be widened, a code heater or the like having a circular cross section may be used. When a cord heater having a circular cross section is used, if the guide groove (straight groove) is formed in a U-shaped cross section, the cord heater can be easily attached. About another structure, it may be the same as that of the case where a tape heater is used.

(2-2-2. Step 2)
After the heat generating portion 51 is disposed in the entire linear groove 122 of the casing 120 and the tape heater 5 is installed, the closing plate 130 is put on the closing surface 120b of the casing 120 and fastened with bolts. By doing so, the tape heater 5 is covered with the casing 120 and the closing plate 130. Specifically, the heat generating portion 51 of the tape heater 5 is accommodated in a box-shaped space 125 formed by the linear groove 121 and the closing plate 130 of the casing 120 and the other portions are formed by the base portion 126 and the closing plate 130. It becomes a state. Thereby, the tape heater 5 can be protected from ballast or the like.

(2-2-3. Step 3)
Next, the heat insulating members 141 to 143 are attached to the corresponding surfaces. The heat insulating member 141 is fastened to the vehicle body installation surface side of the casing 120 with a bolt. At that time, the power cord 53 protruding from the insertion port 129 is inserted into the insertion port 149. The heat insulating members 142 and 143 are also fastened to the upper and lower side surfaces of the casing 120 with bolts.

(2-2-4. Step 4)
In this way, the railcar snow melting device 110 in a pre-assembled state is arranged on the skirt portions 204 and 205 of the vehicle body 201, and the power plug of the power cord 53 protruding from the insertion port 129 and the insertion port 149 is connected to the lower part of the vehicle body floor. Then, the railcar snow melting device 110 is fastened to the skirt portions 204 and 205 with bolts.

[2-3. Effects of Embodiment 2]
As described above, the railway vehicle snow melting device 110 according to the present embodiment is configured so that the tape heater 5 is placed in the guide groove 122 provided in the casing 120 and covered with the closing plate 130, so that the railway vehicle snow melting device can be easily provided. 110 can be assembled, and the snow melting device 110 for a railway vehicle assembled in advance at a work place or the like can be directly attached to the vehicle body. Further, since the tape heater 5 is covered with the casing 120 and the closing plate 130, the tape heater 5 can be protected from ballast or the like.

  In addition, since the casing 120, the closing plate 130, the heat insulating member 140, and the tape heater 5 can be separated from each other, even if any one of them is damaged, only the damaged portion needs to be replaced. Further, the guide groove 122 includes a plurality of linear grooves 122a to 122d extending over the entire casing 120, and the tape heater 5 is attached to the casing 120 by being folded back in sequence. The entire snow melting device 110 can be heated substantially uniformly. Further, since the tape heater 5 is disposed sideways on the casing 120, the installation area of the tape heater 5 and the closing plate 130 is large, and heat is easily transmitted to the closing plate 130.

  Moreover, since the hollow part is provided in the protruding part 127 of the casing 120 and an air layer is formed in the hollow part, the heat of the tape heater 5 is difficult to escape to the vehicle body side, and the heat is efficiently transmitted to the closing plate 130. That is, heat radiation can be suppressed by the hollow portion. In addition, since there is a hollow portion, the weight of the casing 120 can be reduced, the weight can be reduced, the handling can be facilitated, and the cost can be reduced with less material.

  Further, by attaching the heat insulating member 140 to the vehicle body installation surface or side surface of the casing 120, heat radiation from the vehicle body installation surface or side surface of the casing 120 can be suppressed, and heat can be efficiently transmitted to the closing plate 130.

<3. Modification>
As described above, the preferred embodiments of the present invention have been described with reference to the drawings, but various additions, changes, or deletions can be made without departing from the spirit of the present invention. For example, although the tape heater is used as the linear heater in this embodiment, a flexible long heater capable of meandering such as a cord-shaped heater having a circular cross section may be used. In this case, it is preferable to match the shape of the guide groove to the shape of the linear heater. Moreover, although the casing of this embodiment uses the thing of a foamed resin and an aluminum type material as an example, other foamed resins, other metals, and another raw material may be used.

  Moreover, although the corrugated plate-like thing is used as an example for the closing board of this embodiment, you may use the obstruction board of other shapes, such as flat form. In this case, it is preferable to match the surface (first surface) of the casing to the shape of the closing plate. In addition, the guide groove of the casing of the present embodiment is configured by a plurality of linear grooves extending in the vehicle vertical direction as an example, but a plurality of linear grooves extending in the vehicle width direction, curved grooves other than the linear grooves, and the like You may comprise. In Embodiment 1 of the present embodiment, the aluminum sheet is disposed in the guide groove, but the aluminum sheet may not be provided.

  In the first embodiment, the outer box is used, and in the second embodiment, the heat insulating member is used. However, the outer box and the heat insulating member may be provided, or the outer box and the heat insulating member may be omitted. Moreover, although FRP is used for the heat insulation member of this embodiment, resin, cloth, and other materials having high heat insulation properties may be used, or heat insulation paint may be applied. Moreover, although the stainless steel material is used for the closing board and outer box of this embodiment, you may use another metal and another raw material. Therefore, such a thing is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 (1L, 1C, 1R) Snow melting apparatus 2 for rail vehicles 2 Casing 2a 1st surface 2b 2nd surface 21 Base part 22 Frame part 23 Raised part 23a Rod-shaped part 24 Guide groove 24a Linear groove 25 Space 26 Notch 27 Notch 28 Drain hole 29 Insertion hole 3 Outer box 31 Base part 32 Frame part 33 Insertion hole 34 Cord holding part 35 Through hole 36 Through hole 37 Drain hole 4 Closing plate 41 Through hole 42 Through hole 5 Tape heater (linear) heater)
51 Heating part 52 Sealing part 53 Power cord 54 Bushing 55 Conductor 56 Heating element 57 Insulating material 110 (110L, 110C, 110R) Snow melting device 120, 120 'casing 120a installation surface (first surface) for railway vehicles
120b Covered surface (second surface)
121 Aluminum mold members 121a and 121b Hollow portions 122 (122a to 122d) Guide grooves (linear grooves)
123 Convex part 124 Concave part 125 (125a, 125b) Space 126 Base part 127 Raised part 128 Notch 129 Insertion port 130 Closure plate 138 Notch 140 (141, 142, 143) Heat insulation member 148 Notch 149 Insertion port 201 Car body 202 Under floor Part 203 wheel 204, 205 wheel skirt part 206 vehicle body skirt part X vehicle width direction Y vehicle vertical direction Z vehicle longitudinal direction

Claims (17)

A snow melting device for a railway vehicle for melting ice and snow adhering to the lower part of the vehicle body of the railway vehicle, the snow melting device for a railway vehicle comprising a linear heater, a casing, and a closing plate,
The casing is provided on the first surface on the vehicle body side in the longitudinal direction of the vehicle, the second surface that is closed by the closing plate on the opposite side of the first surface, and the second surface side. And a guide groove for mounting the linear heater,
The linear heater is covered by the casing and the closing plate ;
Furthermore, an outer box that houses the casing, one of which is open,
An opening for the outer box is closed by the closing plate, and the casing is covered by the outer box and the closing plate . A snow melting device for a railway vehicle for melting ice and snow adhering to the lower part of the vehicle body of the railway vehicle, the snow melting device for a railway vehicle comprising a linear heater, a casing, and a closing plate,
The casing is provided on the first surface on the vehicle body side in the longitudinal direction of the vehicle, the second surface that is closed by the closing plate on the opposite side of the first surface, and the second surface side. And a guide groove for mounting the linear heater,
The linear heater is covered by the casing and the closing plate ;
The snowboard device for a railway vehicle , wherein the closing plate is a plate having a cross-sectional wave shape, and the second surface is formed in a shape corresponding to the closing plate . The guide groove includes a plurality of linear grooves that are open at both ends,
The snow melting device for a railway vehicle according to claim 1 or 2 , wherein a space for turning back the linear heater is formed outside both ends of the linear groove. The casing has a plate-like base part, a frame part standing on the periphery of the base part, and a raised part surrounded by the frame part,
The linear groove is formed in the raised portion,
The snow melting device for a railway vehicle according to claim 3 , wherein the space is formed to be surrounded by the raised portion, the frame portion, the base portion, and the closing plate. The raised portion is formed such that a plurality of rod-like portions extending in the vehicle vertical direction are alternately shifted in the vehicle vertical direction and are continuous in the vehicle width direction,
The plurality of rod-shaped portions are formed with curved tips on the protruding side in the vehicle vertical direction,
The snow melting device for a railway vehicle according to claim 4 , wherein the linear groove is formed at a boundary between the plurality of rod-shaped portions. The snow melting device for a railway vehicle according to claim 4 or 5 , wherein a drainage hole is provided in the frame portion. The linear heater is a tape heater,
The guide groove has a vertically long cross section,
The snow melting apparatus for a railway vehicle according to any one of claims 1 to 6 , wherein the linear heater is placed vertically in the guide groove. Wherein the guide groove, railway vehicle snow melting device according to any one of claims 1 to 7, characterized in that the aluminum sheet is disposed. The snow melting device for a railway vehicle according to any one of claims 1 to 8 , wherein the casing is made of a flame-retardant or non-flammable material and a heat insulating material. A snow melting device for a railway vehicle for melting ice and snow adhering to the lower part of the vehicle body of the railway vehicle, the snow melting device for a railway vehicle comprising a linear heater, a casing, and a closing plate,
The casing is
A first surface on the vehicle body side in the longitudinal direction of the vehicle;
On the opposite side of the first surface, a second surface blocked by the closing plate;
A guide groove provided on the second surface side for attaching the linear heater;
The linear heater is covered by the casing and the closing plate ;
The guide groove includes a plurality of linear grooves that are open at both ends,
A space for folding the linear heater is formed outside both ends of the linear groove ,
The casing has a plate-like base part, a frame part standing on the periphery of the base part, and a raised part surrounded by the frame part,
The linear groove is formed in the raised portion,
The space, the raised portion and the frame portion and the base portion that is formed is surrounded by the closing plate and the a railway vehicle snow melting system you characterized. A snow melting device for a railway vehicle for melting ice and snow adhering to the lower part of the vehicle body of the railway vehicle, the snow melting device for a railway vehicle comprising a linear heater, a casing, and a closing plate,
The casing is
A first surface on the vehicle body side in the longitudinal direction of the vehicle;
On the opposite side of the first surface, a second surface blocked by the closing plate;
A guide groove provided on the second surface side for attaching the linear heater;
The linear heater is covered by the casing and the closing plate ;
The guide groove includes a plurality of linear grooves that are open at both ends,
A space for folding the linear heater is formed outside both ends of the linear groove ,
The casing has a plate-like base portion, and a raised portion that protrudes from the base portion in a direction opposite to the vehicle body side in the vehicle longitudinal direction,
The second surface which is the surface of the raised portion is formed along the closing plate,
A guide groove for attaching the linear heater is provided on the second surface,
In a state where the linear heater attached to the guide grooves by attaching the closing plate to said casing, characterized in that the linear heater is configured so as to be covered by the closing plate and the casing iron Snow melting equipment for road vehicles.   The snow melting device for a railway vehicle according to claim 11, wherein the space is a space surrounded by the closing plate, the base portion, and the raised portion. The closing plate is a plate having a cross-sectional wave shape,
The snow melting device for a railway vehicle according to claim 11 or 12, wherein the second surface of the raised portion is formed in a shape corresponding to the closing plate. The snow melting device for a railway vehicle according to claim 11, wherein a hollow portion is provided in the raised portion. The snow melting device for a railway vehicle according to any one of claims 11 to 14, wherein a heat insulating material for suppressing heat radiation is attached to at least the first surface of the casing.   The snow melting device for a railway vehicle according to any one of claims 11 to 15, wherein the guide groove is formed in a semi-elliptical cross section. The snow melting device for a railway vehicle according to any one of claims 11 to 16, wherein the casing is made of an aluminum mold material.

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