JPH10147238A - Carbody of railway rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a carbody have a thin-walled structure including a lining and a heat insulating material by arranging a single vacuum heat insulating material or a heat insulating material that a normal heat insulating material and the vacuum heat insulating material are combined as a high performance heat insulating material between a carbody structure and lining for equipment. SOLUTION: In a carbody of a double skin structure in which a hollow extruded shape is used, a core material is arranged between a pair of plates and laminated woods that these are joined by adhesive and brazing filler metal are used, thickness of the wall of a carbody structure is increased. To secure space in the car, the total thickness of interior trim materials including heat insulating materials is required to be thinned. A high performance heat insulating material as a heat insulating material, that is, a vacuum heat insulating material, for instance, is applied. A vacuum heat insulating material 6 is constituted of a wrapping material 11, a core material 13, a seal part 12, a seal part 14 and a spring material 15. When the internal surface of a side carbody structure is curved in a carbody peripheral direction, the side carbody structure is constituted so as to be bent by providing the heat insulating material 6 with the seal part 14.

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 light-alloy hollow material or a honeycomb structure material having a wall thickness of the structure larger than that of a general thin-plate body. The present invention relates to a vehicle body of a railway vehicle suitable for a configuration.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of reducing weight and improving pressure resistance with rationalization of production and speeding up of railway vehicles, in recent years, a vehicle body utilizing a large hollow material made of light alloy or a honeycomb structure material made of light alloy ( Double-skin structure) has been manufactured. Examples of such a structure include, for the former, an aluminum alloy and a lighter vehicle (issued by the Japan Aluminum Federation in 1990), pages 320 to 368,
For the latter, there is a vehicle structure described in Railcars and Technology (1996, July issue), pp. 24 and 25.

On the other hand, as a heat insulating material structure used for a vehicle body of a railway vehicle, at present, a glass cloth heat insulating plate is mainly installed between the indoor side of the structure and a lining for cladding to block heat intrusion from outside the vehicle body. Has been taken.

[0004] Examples of the heat insulating structure of these vehicle bodies include a structure described in General Introduction to Passenger Car Engineering (published by Railway System Research, 1986), page 339.

[0005]

In the above-mentioned prior art, the thickness of the wall is increased in the structure having the double skin structure.
However, in a railway vehicle, as a condition required for the vehicle body from the viewpoint of securing the interior space, the total thickness including the structure and the interior needs to be equal to or less than the conventional thickness.

In particular, at a portion below the window, this condition is most severely required because it is necessary to secure a width of a passage installed at a central portion in a vehicle width direction. Therefore, it is difficult to secure a space in the vehicle with the current structure of the lining and the heat insulating material. That is, a thin-walled structure material is required.

[0007] Furthermore, since the heat insulating material is generally attached to the structure by bonding, it requires a considerable work time.

An object of the present invention is to provide a thin-walled vehicle body including a lining and a heat insulating material in order to secure a sufficient space in the vehicle body of a railway vehicle.

Another object of the present invention is to provide a structure which facilitates the work of attaching the heat insulating material.

[0010]

The object of the present invention is to provide a high-performance heat insulating material between a structure and a lining for mounting, for example, a vacuum heat insulating material alone or a combination of a normal heat insulating material and a vacuum heat insulating material. This is achieved by arranging.

As a special structure example, in a structure constituted by a large hollow mold material, a vacuum heat insulating material is arranged between the face plates of the mold material, and the above-mentioned arrangement is also achieved in combination. .

If the vacuum heat insulating material is provided with a member having a spring property so as to be in close contact with the inside surface of the structure having the curved surface, the heat insulating material is installed in close contact with the inner surface of the structure. It will be possible to suppress the transfer of heat due to radiation from the surface of the structure or convection of air,
A predetermined heat insulating performance can be exhibited by increasing the thickness of the heat insulating material.

[0013] Since the bending angle in the state of the component of the heat insulating material provided with the member having the spring property is smaller in advance than the angle of the curved surface of the portion where the heat insulating material is to be mounted, the heat insulating material can be attached to the curved surface. By deforming and attaching the member having the spring property, the heat insulating material itself can be held along the curved surface by the member having the spring property, thereby improving workability and reducing the number of parts.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view of a lower portion (lumbar portion) and an underframe of a side structure of a railway vehicle body to which the present invention is applied. FIG. 2 is a plan view of the vacuum heat insulating material provided on the vehicle body. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a BB view of the heat insulating material shown in FIG. FIG. 5 shows a method of disposing the vacuum heat insulating material on the structure (C in FIG. 1).
3) shows an embodiment of the present invention.

Referring to FIG. 1, the body of a railway vehicle comprises a pair of side structures, a roof structure, a pair of end structures and an underframe, and the structural members are double skins made of light alloy hollow extruded members. It has a structure. The side structure 1 and the underframe 2 are both formed by hollow extrusion members, and at least the side structure 1 has a structure in which there is no column member as seen in a general thin plate structure. Since the side structure 1 does not include the column member as described above, the partition between the inner side plate portion and the outer side plate portion of the hollow member is connected by a partition wall, and the partition wall is provided between the respective plate portions. By providing a predetermined interval, strength and rigidity against out-of-plane deformation are secured.
Rail portions 4 are provided at appropriate intervals in the circumferential direction on the indoor side of the hollow extruded members constituting the side structure 1, and the vehicle interior mounting parts are mounted via the rail portions 4. A heat insulating material 6 for preventing heat intrusion from the outside of the vehicle body or release of heat to the outside is mounted on the indoor side face plate of the hollow extrusion member constituting the side structure 1 by being hooked on the side surface of the rail portion 4. Can be

In a double-skin car body using the above-mentioned hollow extruded member or a laminated member in which a core member is disposed between a pair of plate members and these are joined by an adhesive or a brazing agent, the wall of the structure is The thickness increases. Therefore, in order to secure a vehicle interior space equal to or more than that of a conventional vehicle body having a thin plate structure, it is necessary to reduce the total thickness of the interior material including the heat insulating material.

In the present invention, in order to achieve this object, a high-performance heat insulating material, for example, a vacuum heat insulating material is applied as the heat insulating material. FIG. 2 shows an example of the structure of the vacuum heat insulating material.
The heat insulating material 6 includes an outer packaging material 11, a core material 13, a seal portion 12, a seal portion 14, and a spring material 15. Vacuum insulation is
As shown in FIG. 3, the entire core material 13 surrounded by the outer wrapping material 11 (generally using an aluminum foil) is evacuated to a predetermined degree of vacuum. The outer packaging materials 11 are adhered to each other (generally, heat sealing is performed), and the inside of the outer packaging materials 11 is kept in a vacuum state. For this reason, the thermal conductivity of this vacuum heat insulating material is about 1/3 to 1/5 of that of ordinary heat insulating material using glass wool or resin foam material used for railway vehicles, which is extremely high. It will exhibit high performance heat insulating properties.

As shown in FIG. 2, the heat insulating material 6 according to the present invention separates the core material 13 into several pieces (two pieces in this embodiment).
By providing the seal portion 14 between them, the structure can be bent at this portion. That is, the heat insulating material 6
By making the inside a vacuum, the core material 13 and the outer packaging material 1
When the gap between the core member 13 and the core member 13 is reduced, it becomes difficult to deform the core member 13 and the heat insulating member 6 becomes inflexible. Therefore, when the inner surface of the side structure 1 is curved in the vehicle body circumferential direction, the heat insulating material 6 is provided with the seal portion 14 so as to be capable of bending as described above. Further, as shown in FIGS. 2 to 4, the heat insulating material has a structure in which an elastic spring material 15 is attached to the outer packaging material 11 by bonding or mechanical fixing means. As the fixing means, a structure in which a fixing pin is attached to the outer packaging material 11 in advance or a cylindrical bag-shaped fixing portion into which the spring material 5 is inserted may be provided. As shown in FIG. 4, the spring member 15 has a structure in which the spring member 15 is curved in advance so as to be convex on the side that comes into contact with the side structure 1. A mounting member 16 is provided at the tip of the spring member 15 so that the entire heat insulating member 6 can be easily attached to the side structure 1.

FIG. 5 shows a state in which the heat insulating material 6 is attached to the side structure 1. A metal fitting 41 for receiving the mounting tool 16 is provided on the rail portion 4 formed integrally with the side structure 1, and the mounting tool 16 of the heat insulating material 6 is engaged with the metal tool 41 and fixed. The metal fitting 41 may be formed integrally with the side surface of the rail portion 4 of the hollow extruded shape as described above, or may have a structure that can be partially installed later in the longitudinal direction of the vehicle body.

Further, after the rail portion 4 is integrally formed with the hollow extruded profile, the other portions are removed by machining, except for a portion necessary for supporting the insert component, thereby forming an intermittent rail structure portion. Form. An opening is provided in the heat insulating material 6 corresponding to the partially left rail portion, and a support metal fitting for fixing the heat insulating material is provided in the opening. According to such a configuration, when the rail portion 4 for attaching the fitting part to the hollow extruded profile extending in the longitudinal direction of the vehicle body is formed, the heat insulating material is not installed on the rail portion 4. Become. Therefore, as described above, the rail 4
By leaving only necessary parts, heat can be prevented from entering and exiting between the inside and outside of the vehicle through the rail portion 4.

The spring member 15 disposed on the heat insulating member 6 has a shape in which an intermediate portion in the longitudinal direction is bent in advance. The shape of the spring material 16 is, as shown in FIG.
When the is attached to the side structure 1, when the inner surface of the side structure 1 is formed into a curved surface, consideration should be given to sufficiently contacting the contact portion between the inner surface of the side structure 1 and the heat insulating material 6. It is. As shown in FIG. 1, the thickness of the heat insulating material 6 is shorter than the height of the rail portion 4 provided on the side structure 1, and is slightly different from that of the lining 5 fixed to the structure at the position of the rail portion 4. Is provided.

According to this embodiment, when used as the core material of the vacuum heat insulating material, even if the material is not flexible (powder, foamed resin, inorganic fiber material),
The heat insulating material can be installed along the vehicle body having a curved surface. In addition, the heat insulating material has a configuration in which only the seal portion 14 is provided, and there is no major change in the structure as compared with the flat heat insulating material, and the heat insulating material is easy to manufacture. is there.

Further, in the work of attaching the present heat insulating material to the structure, in comparison with the conventional method of attaching the entire surface of the heat insulating material by bonding, the present method merely inserts the heat insulating material between the rails of the structure. Since attachment can be easily performed, there is also an effect that the number of work steps can be significantly reduced.

Further, the outer packaging material of the vacuum heat insulating material is generally made of an aluminum foil material, and does not generate dust and dust as compared with a normal heat insulating material. There is also an effect.

When the heat insulating material is installed on a double-skin vehicle body made of a hollow extruded shape or a laminated material, the thickness of the heat insulating material and the thickness of the vehicle body structural member are reduced by using a conventional heat insulating material. Although it has an effect that it can be made thinner than this, when this heat insulating material is used as a heat insulating means in a body structure of a conventional structure in which a plate member is supported by a bone member, except for the portion where the bone member is installed The thickness of the vehicle body constituent member and the heat insulating material can be made thinner than the conventional structure.

[0026]

As described above, according to the present invention,
The thickness of the heat insulating material placed on the indoor side of the structure is significantly thinner (about 1/2 to 1/3) than conventional materials, so the thickness of the cladding material including the lining has been reduced. it can. This allows
A vehicle having a double skin structure in which the interior space of the vehicle body is at least equal to that of a conventional vehicle can be realized, and a low-cost vehicle can be provided as a whole.

[Brief description of the drawings]

FIG. 1 is a sectional view of a side structure and an underframe of an embodiment of a vehicle body of a railway vehicle according to the present invention.

FIG. 2 is a plan view of a vacuum heat insulating material provided on a vehicle body.

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is an enlarged view of a portion C shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... side structure, 2 ... underframe, 4 ... rail part, 5 ... lining, 6
... Vacuum insulation material, 15 ... Spring material, 16 ... Mounting tool, 41 ... Mounting.

Continuing on the front page (72) Inventor Keiji Omura 794, Higashi-Toyoi, Oji, Kudamatsu City, Yamaguchi Prefecture Inside the Kasado Plant of Hitachi, Ltd. Inside the Kasado Plant (72) Inventor Seijiro Tottori 794, Higashi-Toyoi, Oji, Kudamatsu City, Yamaguchi Prefecture Inside Hitachi Kasado Plant (72) Kazufumi Yamachi 794, Higashi-Toyoi, Kudamatsu City, Yamaguchi Prefecture Inside the Kasado Factory

Claims (5)

[Claims] 1. A railway vehicle body having a vehicle body having a plate portion on each side of a vehicle outside and a vehicle interior, wherein a vacuum heat insulating material is disposed between a room side of the structure and a lining. Body. 2. The body of a railway vehicle according to claim 1,
The vehicle body of a railway vehicle, wherein the vacuum heat insulating material is disposed on the structure side between the structure and the lining. 3. The railway vehicle body according to claim 1,
A body of a railway vehicle, wherein the vacuum heat insulating material is disposed on a lining side between a structure and a lining. 4. The vehicle body of a railway vehicle according to claim 1,
A vehicle body for a railway vehicle, wherein the vacuum heat insulating material is attached via a rail portion provided on a hollow extrusion member constituting a waist portion. 5. A heat insulating material in which the periphery of a heat insulating core material is covered with an airtight sheet material, wherein the heat insulating material is configured to be bendable in a thickness direction thereof, and is bent in advance in a direction in which the heat insulating material is bendable. A heat insulator characterized by having a spring member set therein.