JP6789763B2 - Railroad vehicle structure - Google Patents

Description

The present invention relates to a structure such as a rail vehicle, and more particularly to a high-speed railway vehicle structure which is an airtight structure in which air does not flow in and out of the structure and an airtight load acts on the structure due to pressure fluctuations outside the vehicle due to high-speed running. ..

In recent years, a high-speed railway vehicle structure (hereinafter referred to as a structure) may be manufactured from a hollow extruded shape made of an aluminum alloy for the purpose of improving the quality by reducing the noise inside the vehicle and reducing the cost by reducing the number of parts. ..
The hollow extruded profile is, for example, a member made of an aluminum alloy composed of two facing face plates and a connecting plate connecting these face plates.

Then, after arranging a plurality of hollow extruded profiles on a surface plate and joining them in the longitudinal direction to manufacture panels such as an underframe forming the floor surface of the structure, side structures forming the side surfaces, and a roof structure forming the roof, these panels are used. The structure is manufactured by assembling and joining the hexahedrons.
Patent Document 1 discloses an example in which a structure is constructed by using the hollow extruded profile as described above.

Japanese Unexamined Patent Publication No. 2004-130872

In the case of high-speed rail vehicles, the most severe condition for deformation of the structure is the pressure load acting on the structure when passing through a tunnel at high speed.
Since the structure of a high-speed railway vehicle is a highly airtight structure (hereinafter referred to as an airtight structure), when the pressure outside the vehicle changes while traveling in a tunnel, the airtight load acts on the side structure and roof structure that make up the structure. Deforms out of plane.

In particular, in the window mounting portion of the side structure provided with the window glass (window plate), the glass window comes into contact with the edge of the window opening, so that a pressure load (hereinafter, airtight load) due to the pressure difference between the inside and outside of the vehicle is applied. Then, the deformation is particularly large in the out-of-plane direction, and a high stress is likely to occur locally.
In order to suppress deformation of the side structure due to this airtight load, the thickness of the face plate and connecting plate (rib) constituting the hollow extruded profile can be increased, or the height (thickness) dimension of the hollow extruded profile can be increased. It is effective to increase the size or reduce the size of the window opening.

However, these measures may not be preferable because they increase the weight and reduce the size of the cabin space in the width direction in the vehicle.
Therefore, an object of the present invention is to provide a railway vehicle structure capable of providing a lightweight and wide interior space while suppressing deformation of the side structure due to an airtight load.

In order to solve the above object, the railcar structure according to the present invention includes a first face plate on the outside of the vehicle, a second face plate on the inside of the vehicle, and a plurality of diagonal ribs connecting the first face plate and the second face plate. A railroad vehicle structure having a side structure composed of a hollow extruded profile including vertical ribs intersecting a first face plate and a second face plate, wherein the hollow extruded profile is along the longitudinal direction of the railroad vehicle structure. It is extruded, and the side structure has a window mounting portion to which the window plate is attached, and the window mounting portion includes a window holding portion provided on the peripheral edge of the window opening provided on the first face plate and a window. It is characterized by having a deformation suppressing rib provided integrally with the holding portion.

According to the present invention, it is possible to provide a railway vehicle structure capable of providing a lightweight and wide interior space while suppressing deformation of the side structure due to an airtight load.

FIG. 1 is a perspective view of a partial cross section of a railroad vehicle structure. FIG. 2 is a perspective view of a partial cross section of a window provided in a window opening of a side structure forming a railway vehicle structure as viewed from the inside of the vehicle. FIG. 3 is a cross-sectional view (FIG. 2A-A cross-sectional view) intersecting in the longitudinal direction in the vicinity of the window opening of the side structure forming the railroad vehicle structure. FIG. 4 is a cross-sectional view (FIG. 2BB cross-sectional view) along the longitudinal direction of the fixed portion of the window fixed to the window opening of the side structure. FIG. 5 is a cross-sectional view (FIG. 2C-C cross-sectional view) along the longitudinal direction of the fixed portion of the window fixed to the window opening of the side structure.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
First, the longitudinal direction (rail direction) of the railway vehicle structure 1 (hereinafter referred to as structure 1) is the X direction, and the width direction of the structure 1 (sleeper direction) is defined as each direction related to the railway vehicle structure used in the following description. The Y direction, the height direction of the structure 1 intersecting the X direction and the Y direction is defined as the Z direction. Hereinafter, they are simply referred to as X direction, Y direction, and Z direction.

FIG. 1 is a perspective view of a partial cross section of a railroad vehicle structure. Here, since the structure 1 shown in FIG. 1 is symmetrical with respect to a vertical plane along the X direction including the center line, only one of the structures 1 is shown with respect to the vertical plane.
The structure 1 includes an underframe 40 forming a floor surface, a side structure 30 erected at the end of the underframe 40 in the Y direction, a roof structure 20 mounted on the upper end of the side structure 30, and the like.

The underframe 40 is a flat plate-shaped extruded profile 420 having a plurality of ribs having a T-shaped cross section on a vertical surface along the Y direction, and a plurality of cross beams 430 discretely provided on the lower surface thereof along the Y direction. And side beams 410 provided at both ends of the cross beam 430 in the Y direction along the X direction.

The roof structure 20 is composed of hollow extruded profiles 210, 220, 230, 240, 250 composed of two facing face plates and a plurality of connecting plates connecting the face plates.
These hollow extruded profiles are made of aluminum alloy and are extruded along the X direction.

The roof structure 20 is manufactured by abutting the ends of the hollow extruded profiles 210 to 250 in the Y direction and joining them by melt welding (or friction stir welding) W.
The hollow extruded profile 250 provided at the end of the roof structure 20 in the Y direction is joined to the hollow extruded profile 310 provided at the end of the side structure 30 in the Z direction by melt welding (or friction stir welding) W. To.

The side structure 30 is composed of hollow extruded profiles 310, 320, 330, 340, 350, 360, which are composed of two facing face plates and a plurality of connecting plates connecting the face plates.
The materials and extrusion directions of these hollow extruded profiles are the same as those of the hollow extruded profiles provided for the roof structure 20.

The side structure 30 is manufactured by abutting the ends of the hollow extruded profile 310 to 360 in the Z direction and joining them by melt welding (or friction stir welding) W.
The hollow extruded profile 360 provided at the lower end of the side structure 30 in the Z direction is joined to the side beam 410 forming the underframe 40. For example, a window opening 31 (window mounting portion 90 in FIG. 1) into which a window plate 33 (see FIG. 2) made of laminated glass is fitted is provided across hollow extruded profiles 330 and 340.

FIG. 2 is a perspective view of a partial cross section of the window provided in the window opening of the side structure forming the railway vehicle structure as viewed from the inside of the vehicle, and FIG. 3 is a vicinity of the window opening of the side structure forming the railway vehicle structure. It is a cross-sectional view (AA cross-sectional view in FIG. 2) intersecting in the X direction of.
Further, FIG. 4 is a cross-sectional view (BB cross-sectional view in FIG. 2) of the fixed portion of the window fixed to the window opening of the side structure along the X direction, and FIG. 5 is a window opening of the side structure. It is sectional drawing (CC sectional view in FIG. 2) along the X direction of the fixed part of the window fixed to.

As shown in FIG. 2 or 3, the hollow extruded profile 330 (340) connects the vehicle outer face plate 32a of the structure 1, the vehicle inner face plate 32b of the structure 1, and these face plates (32a, 32b). A plurality of diagonal ribs 32c provided in an inclined manner, and the upper end and lower end portions of the window mounting portion 90 (see FIG. 2) in the Z direction are provided and these double-sided plates (32a, 32b) are connected in an intersecting manner. A vertical rib 32d1 is provided, and a vertical rib 32d2 is provided near the center in the Z direction from the vertical rib 32d1 and connects these double-sided plates (32a, 32b) in an intersecting manner.
Further, either one of the hollow extruded profiles 330 or 340 is provided with vertical ribs 32d3 at the position of the joint W (central portion in the Z direction) connecting the hollow extruded profiles (330, 340).

The window plate 33 is provided so as to straddle the two hollow extruded profile 330 (340) constituting the side structure 30.
Window attaching portion 90 in which the window plate 33 is attached, and the face plate 32b and the oblique ribs 32c of the inner side by machining, a longitudinal rib 32D3, a longitudinal rib 32d2, by removing the face plate 32 a of the exterior, the side structure 30 Be prepared for.
The vehicle outer face plate 32a included in the window mounting portion 90 is removed smaller than the vehicle inner face plate 32b to form the window opening 31 (see FIGS. 4 and 5).

A window holding portion 32e is formed on the peripheral edge of the window opening 31 provided on the face plate 32a on the outer side of the vehicle so that the window plate 33 is abutted and held.
The window holding portion 32e is provided with a relatively large R portion 92a or R portion 92b on the vehicle outer face plates 32a at the four corners of the window opening 31, and has a substantially rectangular annular shape along the edge of the window opening 31. ..
Further, the R portion 92a and the R portion 92b connect a horizontal edge of the window opening 31 along the X direction and a vertical edge thereof along the Z direction.

If the radius of curvature of the R portion formed at the four corners of the window opening 31 is small, when an airtight load acts on the structure, large deformation or high stress is locally generated, so that the window opening 31 The R portion 92a or the R portion 92b having a relatively large radius of curvature is formed in the.
Specifically, as shown in FIG. 2, the R portion 92a has an R toe end portion 91a at one end of the straight edge of the window opening 31 along the Z direction and the other end of the straight edge along the X direction. It is a portion partitioned by the R toe portion 91c of the end portion. Similarly, the R portion 92b is a portion partitioned by the R toe portion 91b and the R toe portion 91d.

When determining the mold of the hollow extruded profile forming the side structure 30, the vertical ribs 32d2 are located at the center of the R portions 92a or 92b at the four corners of the window opening 31 in the Z direction. It is predetermined as a position to be extruded integrally with the face plate 32a or 32b, the oblique rib 32c, or the like.
The deformation suppressing rib 32f provided integrally with the R portion 92a or 92b by leaving a part of the vertical rib 32d2 scraped off is near the central portion of the R toe portions 91a and 91c in the Z direction and the R toe ends 91b and 91d. It is located near the center of the Z direction.

Further, since the R portion 92a or 92b forming a part of the window holding portion 32e is a single face plate, it may be significantly deformed when an airtight load is applied.
Therefore, the deformation suppressing rib 32f is integrated with the R portion 92a or 92b by leaving a part of the vertical rib 32d2 uncut so that the R portion 92a or 92b which becomes a single face plate is not significantly deformed even when an airtight load is applied. Is formed to be.

When molded shaving the window opening 31 by machining a portion of the longitudinal ribs 32d2 to be extruded to the surface plate 32 a integral with the vehicle exterior side, by leaving with R section 92a or 92b, a new component The deformation suppressing rib 32f integrated with the R portion 92 (face plate 32a on the outer side of the vehicle) can be provided without preparing or joining the prepared parts to the R portion 92a or 92b by welding or the like.
Further, since the deformation suppressing rib 32f has a height dimension in the out-of-plane (normal) direction from the window holding portion 32e (R portion 92a, 92b) which is a single face plate, the R portion 92a or 92b which is a single face plate. The moment of inertia of area can be greatly improved to provide high rigidity against an airtight load.

A window receiver 34 (see FIG. 4) for receiving the window plate 33 is provided at a portion of the window opening 31 along the Z direction along the Z direction.
The window receiver 34 includes a leg portion 34a welded to the window holding portion 34e by the welding portion 95, a seat portion 34b extending in the horizontal direction from the upper end portion of the leg portion 34a, and a seat portion 34b on which the window holding metal fitting 36 is placed. It has a back portion 34c extending in the Y direction from the end portion of the seat portion 34b in the X direction. Further, the back portion 34c is welded to the contact portion with the face plate 32b inside the vehicle by the welded portion 96.

The window receiving metal 34 connects the face plate 32b on the inside of the vehicle and the face plate 32a on the outside of the vehicle of the hollow extruded profile forming the side structure 30 at the window mounting portion 90.
Therefore, it is sufficient to reinforce the open end portion of the hollow extruded profile 30 forming the side structure 30 which is opened when the window mounting portion 90 is constructed and the strength tends to decrease, and even when an airtight load acts. Can be provided with various rigidity (strength).

As shown in FIG. 5, the distance h1 between the lower end portion of the back portion 34c and the vehicle inner surface (or the lower end portion of the leg portion 34a) of the face plate 32a is set to be larger than the height dimension h2 of the deformation suppressing rib 32f. There is.
Further, the height dimension h2 of the deformation suppressing rib 32f is set to be smaller than the thickness dimension h3 of the window plate 33 (distance between the vehicle outer surface of the window presser foot 36 described later and the vehicle inner surface of the face plate 32a) h3. ..
With this configuration, the deformation suppressing rib 32f can be provided in the vicinity of the R portion 92a or 92b of the window mounting portion 90 without interfering with the window plate 33, the window receiving metal 34, and the window pressing metal 36.

The window receiver 34 is an extruded shape member made of an aluminum alloy having a substantially h-shaped cross section that is extruded in the Z direction and intersects the extrusion direction, and the back portion 34c is formed on substantially the entire surface along the Z direction. At the same time, the leg portion 34a and the seat portion 34b are formed discretely by removing unnecessary portions.
The leg portions 34a and the seat portion 34b are provided at both ends of the window mounting portion 90 in the Z direction and at two locations between the R toe end portion 91a and the R toe end portion 91b, for a total of four locations.

Subsequently, a procedure for attaching the window plate 33 to the window attachment portion 90 will be described.
First, the peripheral edge of the window plate 33 is brought into contact with the window holding portion 32e from the inside of the vehicle so as to close the window opening 31 for positioning. Next, an annular window presser 36 having a rectangular outer shape and having an opening substantially similar to the shape of the window opening 31 is prepared at the center thereof, and the peripheral edge of the window plate 33 is pressed by the window presser 36. At the same time, the edge of the end portion of the window presser foot 36 in the X direction is placed on the seat portion 34b of the window holder 34.

Then, the window presser foot 36 is fixed to the window holder 34 by the bolt 37 provided with the washer 38 on the screw seat 35 provided in advance on the lower surface of the seat portion 34b of the window presser foot 36.
Finally, the work of filling the gap between the peripheral edge of the window plate 33 and the peripheral edge of the window holding portion 32e with the sealing material 99 and attaching the window plate 33 to the window attaching portion 90 (side structure 30) is completed.

With the above configuration, the side structure 30 of the present invention has an R portion 92a or 92b of the window mounting portion 90 (side structure 30) to which the window plate 33 is attached, even when an airtight load acts on the structure. In order to provide the deformation suppressing rib 32f that is integrally molded with the portion, the thickness of the side structure 30 is increased, the plate thickness of the hollow extruded profile forming the side structure 30 is increased, and a reinforcing material for another part is provided. It is possible to prevent large deformation in the out-of-plane direction.
Further, since it is possible to suppress the local high stress generated in the side structure 30, as a result, it is possible to provide the railway vehicle structure 1 which is lightweight and can be provided with a wide interior space.

1 Railroad vehicle structure 20 Roof structure 30 Side structure 31 Window 32a Car outer face plate 32b Car inner face plate 32c Diagonal ribs 32d1, 32d2, 32d3 Vertical ribs 32e Window holding part 32f Deformation suppression rib 33 Window plate 34 Window washer 34a Leg 34b Seat 34c Back 35 Screw Seat 36 Window presser 37 Bolt 38 Washer 40 Underframe 90 Window mounting 91a, 91b, 91c, 91d R Toe 92 R 99 Seal 210, 220, 230, 240, 250 Hollow extrusion Shapes 310, 320, 330, 340, 350, 360 Hollow extruded shapes 410 Side beams 420 Extruded shapes 430 Cross beams

Claims (4)

A first face plate on the outside of the vehicle, a second face plate on the inside of the vehicle, a plurality of diagonal ribs connecting the first face plate and the second face plate, and vertical ribs intersecting the first face plate and the second face plate. A railroad vehicle structure having a side structure made of a hollow extruded profile.
The hollow extruded profile is extruded along the longitudinal direction of the railroad vehicle structure.
The side structure has a window mounting portion to which a window plate is mounted.
The window mounting portion
A window holding portion provided on the peripheral edge of the window opening provided on the first face plate, and a window holding portion.
Deformation suppressing ribs provided integrally with the window holding portion,
Have ,
The window holding portion is
It is formed integrally with the deformation suppressing rib which forms a part of the vertical rib.
The window holding portion is
Wherein together provided in the corners of the window opening, it has a R portion connecting the vertical edges of the horizontal edges and the window opening of the window opening,
A railway vehicle structure characterized in that the deformation suppressing rib is provided at a central portion in the height direction of the side structure in the R portion . In the railway vehicle structure according to claim 1 ,
The window holding portion is
It is provided along the vertical edge of the window holding portion and is provided with a window holder for fixing the window plate.
The window holder is
A railway vehicle structure characterized by connecting the first face plate and the second face plate. In the railway vehicle structure according to claim 2 .
The window holder is
The legs connected to the first face plate and
A seat extending from the end of the leg in the longitudinal direction of the railway vehicle structure,
A back portion extending in the width direction of the railway vehicle structure from the end portion of the seat portion extending in the longitudinal direction, and
A railroad vehicle structure characterized by having. In the railway vehicle structure according to claim 3 ,
The window plate provided in the window mounting portion is
A railway vehicle structure characterized in that it abuts on the window holding portion and is restrained by a window presser foot fixed to the seat portion.

Images