JP2017043278A - Rail vehicle structure - Google Patents

Abstract

Provided is a rail vehicle structure in which an end base frame is configured with a small number of parts while simplifying manufacturing and reducing manufacturing cost while satisfying improvement in strength, weight reduction, and sound insulation. A frame 4 is formed by two first transverse beams extending in the width direction of the frame 4, and one central frame positioned in the longitudinal center of the frame 4 and the longitudinal frame. Two side beams extending in the longitudinal direction at the ends of the plurality of T-ribbed shaped members that are divided into two end frame that are located at the ends, and the central frame is extended in the longitudinal direction. 113, and a plurality of cross beams are joined to the lower surface of the T-rib-shaped member, and the end frame is attached to the end of the hollow member 128 extending in the longitudinal direction. The two side beams 113 extending in the direction are joined, and the two middle beams 115 extending in the longitudinal direction and one pillow beam extending in the width direction are joined to the lower surface of the hollow shape member 128. It is characterized by that. [Selection] Figure 3

Description

  The present invention is applied to a rail vehicle structure such as a railway vehicle or a monorail vehicle, and particularly relates to a rail vehicle structure that includes an air conditioner under the floor of the structure and can travel at high speed.

A rail vehicle structure (hereinafter referred to as a structure) is generally a hexahedron composed of a roof structure that constitutes an upper surface, a side structure that constitutes a side surface, a base frame that constitutes a lower surface, and a wife structure that constitutes an end face in the longitudinal direction. .
In recent years, for the purpose of improving manufacturability and sound insulation, a roof structure, a side structure, and a frame are made of an aluminum alloy hollow shape composed of two facing face plates and a plurality of ribs connecting the face plates. Etc., and the method of assembling into a rail vehicle structure is becoming widespread.

Patent Document 1 discloses a structure applied to a conventional line vehicle. This structure is a hollow material in which two facing face plates are connected by ribs, and the roof structure, side structure, and underframe are all manufactured.
Patent Document 2 discloses a structure that is applied to a vehicle that travels at high speed. The roof structure and the side structure of this structure are manufactured from a hollow shape material, and the underframe is composed of a single skin extruded shape that is formed by integrally extruding a single faceplate with a T-rib at the center in the longitudinal direction. And the both ends of the longitudinal direction are comprised with the hollow shape material.

Japanese Patent No. 3725057 Japanese Patent No. 4163925

A high-speed vehicle is required to be light in weight so as not to apply a large load to the track when traveling at a high speed. In addition, the strength required to withstand the airtight load acting on the structure when passing through the tunnel at high speed is also required. Therefore, in order to satisfy both weight reduction and strength, the frame is made of a single skin extruded shape and a hollow extruded shape. It consists of and.
On the other hand, the structure of a high-speed vehicle needs to withstand a connection load (vehicle end compression load) that acts in the longitudinal direction of the structure from an adjacent vehicle through a connector as compared with a structure of a conventional line.
For example, according to JIS E 7106 (2006), which defines the design rules for passenger car structures, the compressive load acting on the coupling portion of a high-speed vehicle is defined as 980 kN. (Conventional lines, etc.) is specified as 345 to 490 kN.

  FIG. 5 is a perspective view of a frame of a structure in a conventional high-speed vehicle. 6 is a cross-sectional view (C-C cross section) intersecting the width direction of the structure at the longitudinal center of the underframe shown in FIG. 5, and FIG. 7 is the structure at the end underframe shown in FIG. FIG. 8 is a vertical cross-sectional view (EE cross section) in a direction along the longitudinal direction of the structure in the end frame shown in FIG. 5.

The frame of a conventional high-speed vehicle structure has a side beam 13, an end beam 14, a middle beam 15, a pillow beam 16, and a first horizontal beam 17 having a sufficient height in the vertical direction of the railway vehicle structure on substantially the same plane. The intermediate beam 15 that is firmly assembled and bears the connecting load, and a structure in which the central structure floor 18 is fitted in a space surrounded by these beam members are provided.
In the frame 4 of the conventional structure, the central structure floor 18 is formed with a T-rib shaped member 21 with the first horizontal beam 17 as a boundary, the central frame 11 near the center, and the end frame 12 near the edge. The end structure floor 19 is composed of a hollow member 28 in a composite structure in which a plurality of cross beams 22 are welded to each other.

This is because the central frame 11 having a large area and few rigid beam members is designed to reduce the weight and secure the strength against the airtight pressure, and the vibration from the carriage (the traveling device located below the pillow beam 16) is directly transmitted. This is a measure for improving the sound insulation in the end frame 12.
An end structure floor support 29 is joined to the end in the width direction of the frame 4 of the intermediate beam 15 and the end in the longitudinal direction of the frame 4 of the pillow beam 16, and a hollow shape member 28 is joined thereto. Is done. In addition, a floor plate receiver 23 extending in the longitudinal direction of the underframe 4 is joined to the upper surfaces of the T-rib-shaped member 21 and the hollow member 28, and the floor plate 24 is attached to the upper surface. An air supply duct 25, a return air duct 26, and an exhaust duct 27 that carry air between the air conditioner 6 and the interior of the vehicle are installed between the T-ribbed profile 21 and the hollow profile 28 and the floor plate 24. Is done.

In such a configuration, in the frame (end frame) at both ends in the longitudinal direction of the frame, after arranging the side beams and end beams that are the outer edges of the end frame on the surface plate, After placing the middle beam along the side beam and the pillow beam along the end beam, the hollow shape forming the floor is placed side by side in the space surrounded by these beams, and these beams and the floor material are integrated. Need to connect to.
However, in this structure, not only the number of parts increases, but also the dimensional tolerance of the combination of each beam and flooring must be strictly controlled, so that the number of manufacturing steps tends to increase. Moreover, there exists a problem which should be solved in the point which reduces the number of parts of an end part frame, and reduces the manufacturing cost of a rail vehicle.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rail vehicle structure in which an end base frame is configured with a small number of parts while simplifying manufacturing and reducing manufacturing cost while satisfying strength, weight reduction, and sound insulation improvement. There is.

  In order to solve the above problems, a rail vehicle structure according to the present invention includes a roof structure that constitutes an upper surface, a side structure that constitutes a side surface, a base frame that constitutes a lower surface, and a wife structure that constitutes an end surface. The frame is positioned at one central frame and the end in the longitudinal direction by two first transverse beams extending in the width direction of the frame. The central frame is divided into two end frames, and the central frame has two side beams extending in the longitudinal direction at the ends in the width direction of the plurality of T-rib-shaped members extending in the longitudinal direction. A plurality of transverse beams extending in the width direction are bonded to the lower surface of the T-rib-shaped member, and the end frame is the width of the hollow shape member extending in the longitudinal direction. The two side beams extending in the longitudinal direction are joined to the end of the direction and the hollow In which one bolster extending between two center sills extending in the longitudinal direction on the lower surface of wood in the width direction is joined, characterized in that.

  According to the present invention, it is possible to provide a rail vehicle structure in which an end base frame is configured with a small number of parts while simplifying manufacture and reducing manufacturing costs while satisfying strength, weight reduction, and sound insulation improvement. it can.

It is a perspective view of the rail vehicle structure by this invention. It is a perspective view of the frame of the rail vehicle structure shown in FIG. It is sectional drawing (AA cross section) which cross | intersects the width direction of a structure in the edge part frame shown in FIG. FIG. 3 is a vertical sectional view (BB cross section) in a direction along the longitudinal direction of the structure in the end frame shown in FIG. 2. It is a perspective view of the frame of a structure in the conventional high-speed vehicle. It is sectional drawing (CC cross section) which cross | intersects the width direction of a structure in the longitudinal direction center part of the base frame shown in FIG. It is sectional drawing (DD cross section) which cross | intersects the width direction of a structure in the edge part frame shown in FIG. It is a vertical sectional view (EE cross section) in the direction along the longitudinal direction of the structure in the end frame shown in FIG.

Hereinafter, an example of a rail vehicle structure according to the present invention will be described with reference to the drawings. The “rail vehicle” in this specification is a general term for vehicles that are operated along a laid track, and includes, for example, a railway vehicle, a streetcar, a new transportation system vehicle, a monorail vehicle, and the like. Therefore, hereinafter, a railway vehicle will be described as an example of a typical rail vehicle.
First, each direction related to the structure of the railway vehicle is defined. The width direction (sleeper direction) of the railway vehicle structure is defined as the X direction, and the longitudinal direction (rail direction) and the vertical direction (height direction) orthogonal thereto are defined as the Y direction and the Z direction, respectively. Hereinafter, the ends may be referred to as X direction, Y direction, and Z direction.

FIG. 1 is a perspective view of a rail vehicle structure according to the present invention. The rail vehicle structure 1 includes a pair of side structures 3 (only one is shown) erected at both ends of the frame 4 in the X direction and a pair of wife structures erected at both ends of the frame 4 in the Y direction. 5 (only one is shown) and a hexahedron composed of the roof structure 2 placed on the upper ends of the side structure 3 and the wife structure 5.
The side structure 3 is provided with an entrance for passengers to get on and off and a window for passengers to see the scenery outside the vehicle. Various under-floor devices such as an air conditioner 6 that circulates air in the vehicle are provided below the underframe 4.

FIG. 2 is a perspective view of the frame of the rail vehicle structure shown in FIG. The underframe 4 includes a central underframe 111 near the center of the underframe 4 in the Y direction, and an end underframe 112 near the end of the underframe 4 in the Y direction.
Further, as shown in FIG. 2, the first horizontal beam 117 belonging to the central frame 111 constitutes a boundary in the Y direction between the central frame 111 and the end frame 112.

The center frame 111 is configured by a pair of side beams 113 at the ends in the X direction and a pair of first horizontal beams 117 at the ends in the Y direction, and the inside (the side beams 113 and the first horizontal beams 117). A central structure floor 118 is provided in the space surrounded by
On the other hand, the end frame 112 is configured such that the end portion in the X direction is the pair of side beams 113 and the end portion in the Y direction is composed of one member of the end beam 114 and the first horizontal beam 117. 113, an end beam 114 and an end structure floor 119 are provided in a space surrounded by the first cross beam 117.
In addition, the central structure floor 118 is formed as a composite structure in which a plurality of cross beams are welded to a T-rib shaped member, similar to that shown in FIG.

FIG. 3 is a cross-sectional view (A-A cross section) intersecting the width direction of the structure in the end frame shown in FIG. The end structure floor 119 includes two face plates 131 constituting the surface, oblique ribs 132 that join the face plates to each other in the X direction, and vertical ribs 133 that join the face plates to each other at the end portions in the X direction. These are panel-like parts made of a plurality of aluminum alloy hollow shapes 128 constituted by:
And these hollow shapes 128 are extrusion-molded in the direction along the Y direction of the underframe 4, and end portions in the X direction of the hollow shapes 128 are butted together and joined along the Y direction. Thus, the end structure floor 119 is formed.

A pair of intermediate beams 115 extending in the Y direction of the frame 4 are joined to the lower surface of the hollow profile 128, and the upper surface of the hollow profile 128 extends 6 in the Y direction of the frame 4. Two floor plate receivers 123 are joined, and a floor plate 124 is attached to the upper surface thereof.
Here, the positions in the X direction of the frame 4 of a part of the intermediate beam 115 and the vertical rib 133 and a part of the base plate 4 of the floor plate support 123 are within a range belonging to substantially the same vertical plane P. In addition, an air supply duct 125, a return air duct 126, and an exhaust duct 127 that carry air between the air conditioner 6 and the vehicle interior shown in FIG. Is done.

FIG. 4 is a vertical sectional view (BB cross section) in the direction along the longitudinal direction of the structure in the end frame shown in FIG. One pillow beam 116 extending in the Y direction of the underframe 4 is joined to the lower surface of the hollow member 128.
The pillow beam 116 is joined to the middle beam 115 shown in FIG. 3 and bears a connecting load acting on the middle beam 115. The configuration of the upper surface of the hollow shape member 128 is the same as the configuration shown in FIG.

According to the above configuration, weight reduction and securing of strength against airtight pressure are ensured in the central frame 111 having a large area and few rigid beam members, and sound insulation is provided in the end frame 112 to which vibration from the frame 4 is directly transmitted. In addition, the end structure floor can be realized by using a continuous hollow material that is not divided in the Y direction.
In addition, since it is not necessary to join the end structure floor support used in the conventional structure to the middle beam 115 and the pillow beam 116, while satisfying the strength, weight reduction, and sound insulation improvement required for high-speed vehicles, The end frame 112 can be configured with a small number of parts.
In particular, the middle beams, vertical ribs, and floor plate supports on substantially the same vertical plane contribute as one strong beam member having a height, and thus effectively bear the connection load acting on the middle beam. Therefore, the production of the rail vehicle can be simplified, and the production cost can be reduced.

The above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
Furthermore, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

For example, when joining each component of the rail vehicle structure according to the present invention, various techniques such as welding, adhesion, and mechanical fastening can be applied as the joining method.
In particular, any joining technique selected from fusion welding, friction stir welding, or the like can be applied to joining the hollow shape members in the longitudinal direction.

DESCRIPTION OF SYMBOLS 1 Rail vehicle structure 2 Roof structure 3 Side structure 4 Underframe 5 Wife structure 6 Air conditioner 111 Center part frame 112 End part frame 113 Side beam 114 End beam 115 Middle beam 116 Pillow beam 117 First cross beam 118 Center part structure floor 119 End structure floor 123 Floor plate support 124 Floor plate 125 Air supply duct 126 Return air duct 127 Exhaust duct 128 Hollow profile 131 Face plate 132 Diagonal rib 133 Vertical rib

Claims (4)

A rail vehicle structure having a roof structure constituting an upper surface, a side structure constituting a side surface, a base frame constituting a lower surface, and a wife structure constituting an end surface,
The underframe is located at one central part frame located at the center part in the longitudinal direction of the underframe and 2 at the end part in the longitudinal direction by two first transverse beams extending in the width direction of the underframe. Divided into two end underframes,
The central frame has two side beams extending in the longitudinal direction joined to end portions in the width direction of the plurality of T-rib shaped members extending in the longitudinal direction, and the T-rib shaped member. A plurality of transverse beams extending in the width direction are joined to the lower surface of
In the end frame, two side beams extending in the longitudinal direction are joined to the end in the width direction of the hollow shape extending in the longitudinal direction, and the longitudinal direction is attached to the lower surface of the hollow shape. Two middle beams extending in the direction and one pillow beam extending in the width direction are joined.
A rail vehicle structure characterized by that. In the rail vehicle structure according to claim 1,
A plurality of floor plate supports extending in the longitudinal direction are joined to the upper surface of the underframe,
A floor board is attached to the upper surface of the floor board receiver.
A rail vehicle structure characterized by that. In the rail vehicle structure according to claim 2,
The hollow profile has two face plates constituting the surface, an oblique rib for joining the two face plates inside in the width direction, and the two face plates joined at the end in the width direction. It is composed by joining a plurality of hollow shapes composed of vertical ribs,
At least one of the intermediate beams, at least one of the vertical ribs, and at least one of the end base frames of the floor board support are located in substantially the same vertical plane in the width direction.
A rail vehicle structure characterized by that. In the rail vehicle structure according to claim 2,
An air conditioner for circulating the air in the vehicle is installed below the underframe,
An air conditioning duct extending in the longitudinal direction of the underframe is installed between the underframe and the floorboard.
A rail vehicle structure characterized by that.

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