JP6959836B2 - End closing plate for railroad vehicles - Google Patents

Description

The present invention relates to an end closing plate for a railway vehicle, for example, an end closing plate for a railway vehicle provided in front of and behind a bogie that supports the railway vehicle and provided with a heater device that suppresses snow accretion.

When a railroad vehicle travels in a snowfall area, the snow adhering to the bogie provided below the underframe constituting the floor of the railroad vehicle, the cover covering the underfloor equipment, and the like may grow and form a snow mass. After passing through the snowfall area, the snow mass adhering to the lower part of the underframe of the railroad vehicle may fall on the track due to the temperature rise when traveling in a relatively warm area and the vibration caused by the traveling. Ballast (such as crushed stones laid on the track) that is bounced off by a snow mass that has fallen from a high-speed railroad car is scattered along the railroad car, the oncoming railroad car, and the railway line outside the track site. May cause damage to.

Patent Document 1 discloses a snow melting device for a railway vehicle for melting ice and snow adhering to the underfloor of a railway vehicle, particularly to a bogie portion. According to this document, the railcar snowmelter comprises a linear heater, a casing and a closing plate, the casing being the first surface on the vehicle body side in the longitudinal direction of the vehicle and the opposite of this first surface. It has a second surface that is closed by a closing plate on the side, and a guide groove for attaching a linear heater provided on the second surface side, and the linear heater is covered by a casing and a closing plate. It is characterized by being smelted.

Japanese Unexamined Patent Publication No. 2013-91485

In the bogie of a railroad vehicle, in order to allow the turning motion of the bogie that follows the curvature in the horizontal plane of the track and the pitching motion of the bogie that follows the vertical curve in the vertical plane of the track, the bogie is surrounded by the bogie. A gap is provided. This gap is formed by the lower surface of the underframe of the railroad vehicle located above the bogie, the side skirts that hang from both ends in the width direction of the lower surface and cover the sides of the bogie, and the longitudinal (front-rear) direction of the lower surface. It is provided at both ends of the bogie and is partitioned by an end closing plate that covers the longitudinal end of the bogie.

The end closing plates located in front of and behind the bogie have a particularly large amount of snow accretion because they are the parts where the air flow including ice and snow easily collides with the running of the railway vehicle. Further, snow lumps are likely to grow in the corners and the like where the longitudinal end of the lower surface of the underframe corresponding to the gap, the upper end of the side skirt, and the widthwise end of the end closing plate are close to each other.

For this reason, the end closing plate provided with a linear heater (heat generator) as a heating source has high heating efficiency, and by laying the linear heater on all peripheral edges of the end closing plate, the entire surface of the end closing plate is provided. It is desirable to have a snow melting effect in. It should be solved in that a linear heater that is flexible and can be freely changed in shape according to the shape of the housing can be easily laid and fixed inside the housing of the heater device incorporating the linear heater. There are challenges.

An object of the present invention is to achieve high heating efficiency and high snowmelt efficiency by being able to heat every corner of the heating element while having a simple structure using a linear heating element which is arranged in a limited space and has a limited amount of heat. In addition to providing, it is to provide a low-cost end closing plate for railroad vehicles that has good workability and can be manufactured with a small manufacturing man-hour.

In order to solve the above problems, one of the typical end closing plates for railway vehicles of the present invention is
In the end closing plate for railroad vehicles provided before and after the bogie of the railroad vehicle
The end closing plate for railway vehicles is
With the lower frame
An upper frame body that fits into the lower frame body and
The heat insulating material provided on the lower frame and
A heater holding portion provided on the upper surface of the heat insulating material and
A linear heating element provided in the heater holding portion and
Equipped with a,
The heater holding portion is
A pair of ladder-shaped horizontal parts and
A pair of vertical portions that connect both ends of the ladder-shaped horizontal portion in the width direction and are separated in the width direction along the height direction.
It is a frame body consisting of
The linear heating element is
This is achieved by providing the ladder-shaped horizontal portion in a plow shape along the height direction.
In addition, one of the representative end closing plates for railway vehicles of the present invention is
In the end closing plate for railroad vehicles provided before and after the bogie of the railroad vehicle
The end closing plate for railway vehicles is
With the lower frame
An upper frame body that fits into the lower frame body and
The heat insulating material provided on the lower frame and
A heater holding portion provided on the upper surface of the heat insulating material and
A linear heating element provided in the heater holding portion and
With
The end closing plate for railway vehicles is
A first end closing plate provided at the center of the railroad vehicle in the width direction,
The second end closing plate provided at both ends in the direction of the first end closing plate, and
Have and
The first end closing plate has a substantially quadrangular portion when viewed in the longitudinal direction of the rail.
The second end closing plate has a substantially trapezoidal portion formed of a substantially square portion and a substantially triangular portion connected to the substantially square portion when viewed in the longitudinal direction of the rail.
The substantially square portion and the substantially square portion are
The linear heating element held by the heater holding portion is provided.
The substantially triangular portion is
To the linear heating element that is zigzag along the height direction,
This is achieved by storing the linear heating elements that are zigzag along the width direction in a stacking manner.

Since the present invention has the above configuration, it can exhibit high heating efficiency, has good workability, and is small in size, even though it has a simple configuration using a linear heating element that is arranged in a limited space and has a limited amount of heat. It is possible to provide a low-cost end closing plate for a railway vehicle that can be manufactured by man-hours.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

FIG. 1 is a cross-sectional view of an end closing plate with a heater provided in front of and behind a bogie that supports a railroad vehicle so as to be travelable. FIG. 2 is a front view of the end closing plate with a heater (view A-view A in FIG. 1). FIG. 3 is a front view of the end closing plate (both ends) with a heater, but the upper frame is shown in a removed state. FIG. 4 is a front view of the end closing plate (center portion) with a heater, but the upper frame is shown in a removed state. FIG. 5 is a cross-sectional view (FIG. 3BB cross-sectional view) of an end closing plate (central portion) with a heater mounted on a railroad vehicle.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, each direction to be used for explanation is defined. The longitudinal direction or rail direction of the railcar is the X direction, the width direction or sleeper direction of the railcar is the Y direction, the height direction of the railcar is the Z direction, and hereinafter, simply referred to as the X direction, the Y direction, and the Z direction.

FIG. 1 is a cross-sectional view of an end closing plate for a railroad vehicle with a heater, which is provided in front of and behind a bogie that supports the railroad vehicle so as to be travelable. Railcars consist of an underframe 11 that forms the floor, side structures (not shown) that are erected at both ends of the underframe 11 in the Y direction, and a wife structure that is erected at both ends of the underframe in the X direction. It consists of a side structure (not shown) and a roof structure (not shown) placed on the upper end of the wife structure, and has a railroad vehicle structure on which passengers and the like ride. The body 10 of a railroad vehicle is composed of the railroad vehicle structure and a bogie provided with wheels 22 provided below both ends of the railroad vehicle structure in the Y direction and capable of rolling on the rail 60.

The underframe 11 includes an end underframe 11a provided at the end in the Y direction and a central underframe 11b provided at the center in the Y direction. The dolly is provided below the end underframe 11a. The central underframe 11b is composed of a plurality of isolated cross beams 12 and a floor plate provided along the Y direction. The cross beam 12 has a curtain rail integrally at the lower end thereof, and the device 40 or the like is fixed by using the curtain rail as shown by a dotted line.

A lower closing plate 17 is provided at a position lowered by a predetermined dimension in the Z direction from the central underframe 11b in substantially parallel to the central underframe 11b. The connection portion 11c between the end underframe 11a and the central underframe 11b and the end of the lower closing plate 17 in the X direction are connected by an end closing plate 34 (32) with a heater provided in an inclined manner. NS. Some devices 41 are fixed to the upper surface of the lower closing plate 17.

FIG. 2 is a front view of the end closing plate with a heater (view A-view A in FIG. 1). The vehicle body 10 of a railroad vehicle has an underframe 11 forming a floor surface and side structures 20 erected at both ends of the underframe 11 in the Y direction. A side skirt 18 that covers the side of the device 40 is provided at the lower end of the side structure 20. Lower closing plates 17 are provided at the lower ends of the side skirts 18 provided at both ends of the vehicle body 10 under the floor in the Y direction. An electric wire gutter 42 is provided above the end of the underframe 11 in the Y direction, and an electric wire such as an auxiliary circuit is placed on the electric wire gutter 42.

A horizontal support portion 15 is provided along the Y direction below the connecting portion 11c (see FIG. 1) between the end underframe 11a forming the underframe 11 and the central underframe 11b. An end closing plate 34 (central portion) with a heater is provided at the center of the horizontal support portion 15 in the Y direction as a first end closing plate, and ends with heaters are provided at both ends of the horizontal support portion 15 in the Y direction. An end closing plate 32 (both ends) with a heater is provided as a second end closing plate in a manner adjacent to the portion closing plate 34 (central portion). In this way, by dividing the end closing plates with heaters 34 and 32 into three and using them, one worker can lift one end closing plate with a heater, and workability is improved.

A plurality of bolt holes 19 are provided at the upper ends of the end closing plate 34 with a heater (center portion) and the end closing plate 32 with a heater (both ends), and the bolts inserted through the bolt holes 19 (hereinafter referred to as the bolts). , Bolts are not particularly shown), and the end closing plate 34 (32) with a heater is fixed to the horizontal support portion 15. The lower end portions of the end closing plate 34 with a heater (center portion) and the end closing plate 32 with a heater (both ends) are connected to the lower closing plate 17 with bolts (see FIG. 1).

FIG. 3 is a front view of the end closing plate (both ends) with a heater, but the upper frame is shown in a removed state. The end closing plate 32 with a heater (both ends) is a box-shaped body including a lower frame body 37 and an upper frame body 38 (see FIG. 5) combined with the lower frame body 37. The end closing plate 32 with a heater (both ends) has a substantially triangular portion 32a and a substantially square portion 32b. A substantially square heater holding portion (also referred to as a wire frame or frame body) 35 is stored in the substantially square portion 32b. The heater holding portion 35 is a frame body composed of a pair of ladder-shaped horizontal portions 35a spaced apart from each other in the Z direction and a pair of vertical portions 35b connecting both ends of the horizontal portions 35a. The vertical portion 35b has a plurality of fixing portions 35c having bolt holes and discretely provided in the Z direction.

The flexible linear heating element (line heater) 36 is bridged from one horizontal portion 35a of the heater holding portion 35 to the other horizontal portion 35a in a cross-shaped manner along the Z direction (a pair). It is held by the heater holding portion (wire frame) 35 at a high density (so that it is alternately hung around the horizontal portion 35a of the above). The heater holding portion 35 including the linear heating element 36 is placed on the upper surface of the heat insulating material 39 provided in the lower frame body 37, and is fixed to the lower frame body 37 by using the fixing portion 35c. As a result, the heater holding portion 35 can be reliably fixed to the end closing plate 32 (both ends) with a heater.

A linear heating element that is zigzag-folded in the Z and Y directions on the upper surface of the heat insulating material 39 after the heat insulating material 39 is spread over the substantially triangular portion 32a forming the end closing plate 32 (both ends) with a heater. 36 is fixed. The linear heating element 36 is fixed to the heat insulating material 39 which is firmly fixed to the lower frame 37 with industrial aluminum tape or the like, if necessary.

In the end closing plate 32 with a heater (both ends), first, the heat insulating material 39 is fixed to the lower frame body 37, and then the heater holding portion 35 and the linear heating body 36 are fixed to the upper surface of the heat insulating material 39. An upper frame body 38 having a similar shape is fitted (fitted) into the lower frame body 37, and a machine using a boss-shaped frame body holding portion 33 planted in the lower frame body 37 with a bolt or the like. It is assembled by fastening and fixing the upper frame body 38 to the lower frame body 37.

FIG. 4 is a front view of the end closing plate (center portion) with a heater, but the upper frame is shown in a removed state. Similar to the heater-attached end closing plate 32 (both ends), the heater-attached end closing plate 34 (center portion) has a lower frame body 37 and an upper frame body 38 combined with the lower frame body 37 (see FIG. 5). It is a substantially square box-shaped body, and a substantially square heater holding portion (wire frame) 35 is stored. The heater holding portion 35 is a frame body composed of a pair of ladder-shaped horizontal portions 35a spaced apart from each other in the Z direction and a pair of vertical portions 35b connecting both ends of the horizontal portions 35a. The vertical portion 35b has a plurality of fixing portions 35c having bolt holes and discretely provided in the Z direction.

The linear heating element (line heater) 36 is bridged from one horizontal portion 35a of the heater holding portion 35 to the other horizontal portion 35a in a cross-shaped manner along the Z direction to have a high density of the heater holding portion 35. Is held in. The heater holding portion 35 provided with the linear heating element 36 is placed on the upper surface of the heat insulating material 39 provided in the lower frame body 37, and is fixed to the lower frame body 37 by using the fixing portion 35c. As a result, the heater holding portion 35 can be reliably fixed to the end closing plate 34 (central portion) with a heater. The unit including the heater holding portion 35 and the linear heating element 36 may be commonly used in the end closing plates 32 and 34 with a heater. This makes it possible to reduce costs.

In the end closing plate 34 (central portion) with a heater, first, the heat insulating material 39 is fixed to the lower frame body 37, and then the heater holding portion 35 and the linear heating body 36 are fixed to the upper surface of the heat insulating material 39. An upper frame body 38 having a similar shape is fitted (fitted) into the lower frame body 37, and a machine using a boss-shaped frame body holding portion 33 planted in the lower frame body 37 with a bolt or the like. It is assembled by fastening and fixing the upper frame body 38 to the lower frame body 37. Thereby, it is possible to provide a strong box-shaped end closing plate 32, 34 with a heater that protects the heater holding portion 35.

FIG. 5 is a cross-sectional view (FIG. 3BB cross-sectional view) of an end closing plate (central portion) with a heater mounted on a railroad vehicle. The end closing plate with a heater (central portion) 34 and the end closing plate with a heater (both ends) 32 have an underframe 11 in such a manner that the upper frame body 38 and the linear heating element 36 face the wheel 22 side. It is provided below.

When the railroad vehicle passes through the snowfall area, the air containing ice and snow flowing in the vicinity of the bogie collides with the upper frame 38 heated by the linear heating element 36. However, since the upper frame 38 is sufficiently heated by the linear heating element 36, the ice and snow melt immediately on the end closing plates 34 (32) with heaters provided in the front and rear of the carriage, so that it can be suppressed from adhering. ..

The above-mentioned configuration, that is, a configuration in which the linear heating element 36 is provided at a high density along the Z direction by using the heater holding portion 35, enables manufacturing by outwork and requires a small number of man-hours for manufacturing. A density heating element can be constructed. Further, by arranging the linear heating element 36 in a plow shape along the height direction, even if the vehicle vibrates, it is hard to loosen.

Further, the peripheral portion of the end closing plate that cannot be covered by the heater holding portion 35 (for example, the end closing plate 32 with a heater (both ends) is a substantially triangular portion 32a, etc.) is zigzag along the Z direction. By stacking the linear heating element 36 and the linear heating element 36 folded in a zigzag along the Y direction and installing additional holding means (industrial aluminum tape, etc.) as needed, the end closing plate can be formed. Since it is possible to sufficiently heat up to the peripheral portion, a high-density heating element can be constructed with a small manufacturing man-hour.

Therefore, with the above-mentioned configuration, high heating efficiency can be exhibited and high snowmelt efficiency due to being able to heat every corner, while having a simple configuration using a linear heating element that is arranged in a limited space and has a limited amount of heat. It is possible to provide an end closing plate for a railway vehicle having a heater device having a low cost and having good workability and being able to be manufactured with a small manufacturing man-hour.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration in one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. .. Further, it is also possible to add / delete / replace a part of the configuration in each embodiment with another configuration.

10 ... Body, 11 ... Underframe 11a ... End underframe, 11b ... Central underframe 11c ... Connection, 12 ... Cross beam 15 ... Horizontal support, 17 ... Lower closing plate 18 ... Side skirt, 19 ... Bolt hole 22 …Wheel,
32 ... End closing plate with heater (both ends in the Y direction),
32a ... substantially triangular portion, 32b ... substantially square portion 34 ... end closing plate with heater (central portion in the Y direction),
35 ... Heater holding part (wire frame), 35a ... Horizontal part 35b ... Vertical part, 35c ... Fixed part 36 ... Linear heating element (line heater), 33 ... Frame body holding part 37 ... Lower frame body, 38 ... Upper frame Body 39 ... Insulation material, 40, 41 ... Equipment 42 ... Electric wire trough, 60 ... Rail X ... Longitudinal direction (rail direction), Y ... Width direction (sleeper direction)
Z ... Height direction

Claims (4)

In the end closing plate for railroad vehicles provided before and after the bogie of the railroad vehicle
The end closing plate for railway vehicles is
With the lower frame
An upper frame body that fits into the lower frame body and
The heat insulating material provided on the lower frame and
A heater holding portion provided on the upper surface of the heat insulating material and
A linear heating element provided in the heater holding portion and
Equipped with a,
The heater holding portion is
A pair of ladder-shaped horizontal parts and
A pair of vertical portions that connect both ends of the ladder-shaped horizontal portion in the width direction and are separated in the width direction along the height direction.
It is a frame body consisting of
The linear heating element is
An end closing plate for a railroad vehicle, characterized in that the ladder-shaped horizontal portion is provided in a plow shape along the height direction. In the end closing plate for railroad vehicles provided before and after the bogie of the railroad vehicle
The end closing plate for railway vehicles is
With the lower frame
An upper frame body that fits into the lower frame body and
The heat insulating material provided on the lower frame and
A heater holding portion provided on the upper surface of the heat insulating material and
A linear heating element provided in the heater holding portion and
With
The end closing plate for railway vehicles is
A first end closing plate provided at the center of the railroad vehicle in the width direction,
The second end closing plate provided at both ends in the direction of the first end closing plate, and
Have and
The first end closing plate has a substantially quadrangular portion when viewed in the longitudinal direction of the rail.
The second end closing plate has a substantially trapezoidal portion formed of a substantially square portion and a substantially triangular portion connected to the substantially square portion when viewed in the longitudinal direction of the rail.
The substantially square portion and the substantially square portion are
The linear heating element held by the heater holding portion is provided.
The substantially triangular portion is
To the linear heating element that is zigzag along the height direction,
An end closing plate for a railway vehicle, characterized in that the linear heating elements that are sequentially folded along the width direction are stored in a stacking manner. In the end closing plate for a railroad vehicle according to claim 2.
The upper frame body
An end closing plate for a railway vehicle, characterized in that it is mechanically fastened to the lower frame body via a frame body holding portion fixed to the lower frame body. In the end closing plate for a railway vehicle according to claim 1,
The heater holding portion is
The fixing portions discretely provided on the vertical portion are fixed to the lower frame body.
An end closing plate for railroad vehicles featuring.

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