JPH05139298A - Rolling stock body - Google Patents

Abstract

PURPOSE:To provide a rolling stock body of little air resistance while securing accommodation space and equipment installation space. CONSTITUTION:A side framing body 12 forming the side face of a body is formed into a curved surface protruding into the vehicle exterior side, and a skirt 19 installed below the side framing body 12 is formed into a curved surface protruding into the vehicle exterior side. The curved surface protruding into the vehicle interior side is then formed between the side framing body 12 and the skirt 19 to construct a rolling stock body. The curved surface protruding into the interior side is integrally formed at the side beam 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body of a railway vehicle, and more particularly to a vehicle body of a railway vehicle suitable for traveling at high speed.

[0002]

2. Description of the Related Art Conventionally, in the cross-sectional shape of a vehicle body of a railway vehicle, the width of the room is generally the same for both the ceiling portion and the floor portion. From the viewpoint of design and appearance, the width of the ceiling is slightly narrowed to make it an arc shape, and the underside of the underframe is also made an arc shape. By the way, the body of a railway vehicle that travels at high speed employs a lightweight structure (mainly made of aluminum alloy, rivet structure, follow material structure, honeycomb panel structure). these,
As the cross-sectional shape of the vehicle body, for example, Light Metal Vehicle Commission Report No. 3 1974-52, 1978 9
15th, March 70th, published by Japan Railway Vehicle Manufacturers Association
The structure is described in pages 72 to 72. Further, as another vehicle body structure, for example, there is JP-A-1-145259. This is a structure in which the underframe is made of dissimilar metals to secure the strength, and is a structure in which a horizontal beam of stainless steel or high-tensile steel is fastened to a side beam made of a light alloy extruded mold member by a mechanical coupling means. There is.

[0003]

In recent years, in railway vehicles, there has been a strong desire and desire to improve the traveling speed, and some of them have been embodied. As the traveling speed of railway vehicles increases, there are concerns about environmental problems, that is, noise problems, close-ups of driving power, and measures for improving riding comfort. In order to solve these problems, it is necessary not only to reduce the weight of the railway vehicle but also to optimize the cross-sectional shape of the vehicle body and eliminate waste. However, from the viewpoint of reducing the weight of the vehicle body and reducing the air resistance, the cross-sectional shape in the width direction has not been sufficiently examined. That is, the conventional vehicle body has not been sufficiently considered from the viewpoint of reducing the cross-sectional shape in the width direction and reducing the air resistance. If the radius of curvature of the cross section of the vehicle body in the width direction is determined and extended to the interior part on the condition that the underfloor equipment is stored, the width of the vehicle body becomes too large and the cross sectional shape in the vehicle width direction has a curvature radius that can secure the required indoor width. When set to, there is a problem that when covering up to the underfloor equipment part, the underfloor equipment room becomes narrow and the equipment cannot be installed.

It is also known that when a railway vehicle travels in a tunnel at a high speed, the pressure outside the vehicle suddenly changes. Especially when vehicles pass each other in a tunnel, large pressure fluctuations occur. In order to suppress this pressure fluctuation, reducing the cross section of the vehicle body tends to the solution direction, but it conflicts with the demand to secure a sufficient cross-sectional area in the width direction of the room and to secure an installation space for underfloor equipment. In the direction. That is, there is a contradictory relationship between making the room and the equipment room large and making the vehicle body cross section small, which is difficult to realize.

An object of the present invention is to provide a vehicle body of a railway vehicle which secures a living space and a device installation space and has a low air resistance.

[0006]

The object is to form a side surface of a passenger accommodating portion of a vehicle body into a curved surface that is convex toward the outside of the vehicle, and form a side surface of an equipment accommodating portion of the vehicle body located below the passenger accommodating portion outside the vehicle. This is achieved by forming a convex curved surface inward and forming an intermediate curved surface convex inward in the vehicle between the passenger accommodation portion curved surface and the equipment accommodation portion curved surface.

[0007]

By forming the passenger accommodating portion and the equipment accommodating portion on the side surface of the vehicle body respectively on the curved surfaces convex toward the outside of the vehicle, it is possible to secure a wide interior space for the passenger compartment and the equipment compartment, and the curved surface for the passenger accommodating portion and the equipment accommodating portion By connecting the partial curved surfaces to the inside of the vehicle via the convex curved surface, it is possible to reduce the air resistance by minimizing the cross-sectional area in the width direction of the vehicle body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 11 is a vehicle body of a railway vehicle. The vehicle body 11 includes a side structure 12 forming both side surfaces thereof, an upper surface or a roof structure 13 forming a roof portion, an underframe 14 forming a lower surface, and a gable structure 15 forming both end surfaces. The side structure 12 is formed in an arcuate curved surface having a radius of curvature R and protruding outward from the vehicle. The center of the passenger is located approximately at the shoulder level when the passenger is seated. Therefore,
The width W of the center position of the radius of curvature R is the maximum width of the vehicle body 11. The side structure 12 has a single radius in the middle in the height direction, and the upper part is formed into a curved surface having a small radius of curvature in consideration of connection with the roof structure 13. Roof structure 1
3 is formed in an arcuate curved surface having a radius of curvature R2. The radius of curvature of the side structure 12 and the roof structure 13 is R2>
There is an R relationship. Reference numeral 16 is a side beam that constitutes the underframe 14, and is arranged at both sides of the underframe 14 in the vehicle width direction so as to extend in the vehicle longitudinal direction. 17, 17t are the side beams 1
It is a horizontal beam installed between 6. Each of the transverse beams 17, 17t
Is joined to the side surface of the side beam 16 at each end. The lateral beams 17 are installed corresponding to the general part, that is, substantially the passenger compartment part, except for the bogie installation positions at both ends in the longitudinal direction of the vehicle body. An underfloor device 18 is mainly attached to the lower surface of the cross beam 17. The horizontal beam 17t is a horizontal beam at which the undercarriage of the underframe 14 is installed. The pillow beam, the center beam and the end beam are also the horizontal beams 1.
It will be installed at the same height as 7t. That is, horizontal beam 1
7t is provided at a position higher than the cross beam 17 in consideration of the height of the carriage because a carriage (not shown) is installed below the underframe 14. Reference numeral 19 denotes a skirt that covers the side surface of the underfloor device 18 from the lower portion of the side beam 16.

The side beam 16 includes an upper member 20a and a lower member 20.
b), both of which are light alloy hollow extrusion mold materials. If a large hollow extruded material can be formed, it is advantageous to integrally mold the upper member and the lower member. The upper member 20a and the lower member 20b are continuously joined at welded portions 22 inside and outside in the vehicle width direction. The upper member 20a is formed such that the upper surface side is joined to the long base of the side structure 12. Further, a flange portion for receiving the upper side of the lateral beams 17, 17t is integrally formed on the inner side surface of the upper member 20a, and is trimmed as necessary. The outer side surface of the upper member 20a is formed as a curved surface that is convex toward the vehicle interior, that is, a predetermined radius in the case of this embodiment, that is, an arc surface having a radius of 80 mm, that is, R80. Then, the upper member 20
The rib 28 connecting the outer surface portion and the inner portion of the
It is formed so that the respective surface directions face the arc center of the arc surface of 80. That is, each rib 28 has an upper member 20a.
Each flat surface portion is formed radially from the center of the outer surface arc. Therefore, each rib 28 is positioned at right angles to the tangent of the arc surface. The upper member 20
The joint A between the a and the lower member 20b is located at a position A below the arc portion of the upper member 20a, which is important for strength. The upper portion of the outer surface of the upper member 20a forms a curved surface having a radius of curvature R continuous with the arcuate curved surface of the side structure 12, and a contact point B between the curved surface and the curved surface of the R80 has an edge as much as possible. Form. That is, the contact B is formed in an acute angle so that its corner is projected with a certain radius of curvature so as not to be rounded.

On the inner side surface of the lower member 20b, a flange portion for receiving the lower side of the transverse beams 17, 17t is integrally formed, and is trimmed as necessary. The lower member 20b
A receiver 24 for receiving a support 23 provided on the back surface of the skirt 19 is integrally formed on the outer side surface of the. Both of them are formed so that the tip projection of the support 23 is removably fitted in the recess of the receiver 24, and this fitting can be done with one touch. Further, below the outer side surface of the lower member 20b, that is, below the receiver 24, the support 2 for the skirt 19 is provided.
A bracket 26 that receives the stay 25 provided below 3 is integrally formed. The stay 25 and the bracket 26 are fastened by bolts 27. That is,
The skirt 19 is fitted to the support 23 and the receiving member 24 of the lower member 20b, and the stay 25 is fixed to the bracket 26 by bolts 27.

The skirt 19 is formed into an arcuate curved surface with a radius of curvature R1 centered on the upper position of the underframe 14, and the outer surface is formed into a curved surface that is convex toward the vehicle exterior. The curvature radius R1 of the skirt 19 has a relationship of R> R1 with respect to the side structure 12 in consideration of the width of the underfloor device 18. The lower end of the skirt 19 extends to near the lower surface edge of the underfloor equipment 18, and the lower end has a small radius of curvature. In addition, the lower end of the skirt 19 is configured so that the gap with the rail upper surface RU is substantially the same as the gap with the underfloor equipment 18. The upper end of the skirt 19 has a curved surface continuous with a tangent line extending obliquely downward of the outer curved surface of the upper member 20a, that is, a tangent line inclined 45 degrees downward with respect to the horizontal plane in this embodiment, and the curved surface is small. It is connected to the curved surface of R1 by the radius of curvature. That is, the upper end of the curved surface of R80 formed on the side beam 16 has a corner protruding, and the lower end is gently formed by a surface extending in the tangential direction of the curved surface.

Reference numeral 21 denotes a floor surface in the passenger compartment, which is set to have the same height as the normal platform. The maximum maximum W position of the vehicle body 11 is approximately 600 mm to 1000 mm above the floor surface.
The position is about mm. Although the installation position of the cross beam 17 is determined in consideration of the allowable clearance between the underfloor equipment 18 and the rail upper surface RU, the installation position of the cross beam 17 is lowered as much as possible. The space between the cross beam 17 and the floor surface 21 is widened to increase the area of the air conditioning duct installed in this portion. Wiring is also provided between the floor surface 21 and the lateral beam 17 together with the air conditioning duct. By lowering the installation position of the cross beam 17 as described above, the center of gravity of the vehicle body 11 as a whole can be lowered and traveling stability can be improved.

By the way, at least the side structure 12 and the roof structure 13 of this embodiment are made of honeycomb panels. Further, the honeycomb frame may use the underframe 14 if necessary.

In such a structure, the vehicle body 11 includes the blocks, that is, the side structure 12 and the roof structure 1.
3, the underframe 14 and the wife structure 15 are manufactured independently.
The vehicle is constructed by combining and joining these. Further, the underframe 14 is constructed by first joining the side beam 16 to the upper member 20a and the lower member 20b. However, the flanges for joining the horizontal beams 17 and 17t on the inner side surfaces of the upper member 20a and the lower member 20b are formed by cutting unnecessary portions in advance.

The skirt 19 is attached after the underfloor equipment 16 is attached to the cross beam 17 of the vehicle body 11.

According to this structure, since the passenger accommodating portion on the side surface of the vehicle body 11, that is, the side structure 12, is formed in a curved surface convex toward the outside of the vehicle, the passenger space occupies the passenger compartment as compared with the conventional vehicle body. Can be widely secured according to the situation. Further, since the skirt 19 of the device housing portion has a curved surface that is convex toward the outside of the vehicle, a wide device housing space can be secured. This side structure 12
By forming a convex curved surface inward of the side beam 16 which is an intermediate curved surface between the two curved surfaces of the skirt 19 and the skirt 19, the cross-sectional area of the vehicle body 11 in the width direction of the vehicle body is formed in a conventional quadrangle so that the curved surface is formed in the lower portion. The air resistance can be reduced by making it narrower than the provided vehicle body. That is, according to the vehicle body 11, the passenger accommodation space and the equipment accommodation space can be secured, and the air resistance of the vehicle body 11 can be reduced.

Since the side beam 16 is formed with an R80 curved surface which is convex toward the vehicle inner side on the outer surface as an integrally extruded shape member, the curved surface portion is easily and accurately formed, and further, in the longitudinal direction of the vehicle body. Can be formed over the entire length of. Further, since the curved surface of R80 is a hollow extruded material and the ribs 28 inside are formed radially from the arc center of the curved surface, the ribs 28 are positioned so as to be orthogonal to the tangent to the arc-shaped curved surface. It is most effective in preventing buckling of the arcuate curved surface. Therefore, with respect to the vertical bending load or the vehicle end compression load acting on the side beam 16, the side beam 16 is prevented.
Even if the plate thickness of each part is reduced, sufficient strength and rigidity can be secured. This leads to weight reduction and rigidity improvement of the vehicle body 11.

The side beam 16 is formed by extending the adjacent curved surface as much as possible by setting the position B as a radius smaller than the radius of curvature of the curved surface of R80 and setting an edge.
It is possible to secure a wide sectional area of itself and increase the sectional modulus. As a result, the strength and rigidity of the side beam 16 can be improved. The skirt 19 is provided below the curved surface of the side beam 16.
Since the curved surface that extends obliquely downward 45 degrees continues to the curved surface that is the main body of the skirt 19, rainwater and dust easily flow, which is advantageous in terms of maintenance and cleaning. Further, the sharp edge at the position B of the side beam 16 can give a clear accent to the passenger accommodation portion, that is, the passenger compartment portion and the equipment accommodation portion, so that the appearance can be improved.

The skirt 19 is supported on the side beam 16 at two points above and below, but since one of them is fitted, the mounting work can be simplified. Further, since the skirt 19 can almost completely cover the side surface of the underfloor equipment 18 and can smooth the side surface of the vehicle body, noise and air resistance can be reduced.

[0020]

As described above, according to the present invention, the passenger accommodating portion and the equipment accommodating portion have curved surfaces that are convex toward the outside of the vehicle, and intermediate curved surfaces that are convex toward the inside of the vehicle are provided between the passenger accommodation portion and the equipment accommodation portion. The living space of the vehicle body of the vehicle and the equipment installation space can be secured, and the air resistance can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view in the vehicle width direction showing an embodiment of a vehicle body of a railway vehicle according to the present invention.

FIG. 2 is a sectional view showing a detailed structure of a side beam in FIG.

FIG. 3 is a perspective view showing an appearance of the vehicle body shown in FIG.

[Explanation of symbols]

11 ... vehicle body, 12 ... side structure, 13 ... roof structure, 1
4 ... Underframe, 15 ... wife structure, 16 ... side beam, 17,1
7t ... lateral beam, 18 ... underfloor equipment, 19 ... skirt.

Claims (4)

[Claims] 1. A side surface of a passenger accommodating portion of a vehicle body is formed into a curved surface that is convex toward the outside of the vehicle, and a side surface of an equipment accommodating portion located below the passenger accommodation portion of the vehicle body is formed into a curved surface that is convex toward the outside of the vehicle, A vehicle body of a railway vehicle, wherein an intermediate curved surface that is convex toward the inside of the vehicle is formed between the passenger accommodation curved surface and the equipment accommodation curved surface. 2. The railcar body according to claim 1, wherein the intermediate curved surface and the passenger accommodation curved surface are continuously formed by curved surfaces having a radius of curvature shorter than that of the intermediate curved surface. Characteristic rail car body. 3. The vehicle body of the railway vehicle according to claim 1, wherein the curved surface of the intermediate portion and the curved surface of the device housing portion are connected via a curved surface extending in a tangential direction extending obliquely downward of the curved surface of the intermediate portion. Characteristic rail car body. 4. The vehicle body of the railway vehicle according to claim 1, wherein the curved surface of the intermediate portion is formed by a side beam that constitutes an underframe.