WO2013157464A1

WO2013157464A1 - Rail vehicle body structure

Info

Publication number: WO2013157464A1
Application number: PCT/JP2013/060851
Authority: WO
Inventors: 庸介森田; 川崎　健; 中村　英之; 忠正金保
Original assignee: 株式会社日立製作所
Priority date: 2012-04-17
Filing date: 2013-04-10
Publication date: 2013-10-24
Also published as: GB2514516B; GB2567545B; GB201813939D0; DE112013002072B4; DE112013002072T5; GB2567545A; GB2514516A; GB201416685D0; JPWO2013157464A1

Abstract

Provided is an underframe such that, in a case where a body bolster and a center sill are fastened by a mechanical fastening means and the mechanical fastening means is included in an air spring bearing of the body bolster, interference between a head portion of a mechanical fastening portion and an air spring abutting on the air spring bearing can be avoided. A body bolster (15) is provided with a plate member (61) at a portion where a center sill (14) and the body bolster (15) intersect with each other. At a bolt fastening portion (57, 58) for fastening the center sill (14) and a plate-like member (51) which is a major portion of the body bolster (15), the plate-like member (51) is provided with a counterbore not smaller than the outer diameter of a tool for fastening a bolt (90) and with a depth not less than the height of the head of the bolt (90) so that the head of the bolt (90) can be prevented from interfering with an air spring (5).

Description

Rail vehicle structure

The present invention is provided with a pillow beam and a middle beam crossing the pillow beam on the lower surface of the frame forming the floor surface of the rail vehicle structure, and has a frame for assembling the part by mechanical fastening means such as rivets or bolts. The present invention relates to a structure of a rail vehicle structure (hereinafter referred to as a structure).

In recent years, aluminum alloys having excellent extrudability, corrosion resistance, and weldability have been developed for railway vehicles. Along with this, from the aspect of weight reduction and rationalization of production, a railway vehicle having a structure composed of a large shape made of an aluminum alloy has become mainstream.
A railway vehicle is composed of a hexahedron structure, a carriage that is supported on both ends of the structure in the longitudinal direction and travels on a track, and electrical equipment and interior parts. The structure is connected to the carriage via a support device and a traction device. The traction device is composed of a center pin provided on the lower surface of the pillow beam constituting the floor surface (base frame) constituting the structure, and a connecting link that connects the trolley in the front-rear direction. It consists of an air spring or the like that supports the load.

Generally, a structure constituting a railway vehicle includes a base frame that forms a floor surface, side structures that are erected at both ends in the width direction of the frame, and wife structures that are erected at both ends in the longitudinal direction of the frame. And the roof structure disposed at the upper end of the side structure and the wife structure. Among these, at both ends in the longitudinal direction of the structure on the lower surface of the underframe, there are a middle beam provided with a coupler for connecting vehicles to each other, and a pillow beam provided with the above-described traction device, support device, etc. Is provided. The intermediate beam provided along the longitudinal direction of the structure is provided on the frame in a manner intersecting with the pillow beam provided along the width direction of the structure, and the frame is attached to the structure via a connector or a carriage. Provide sufficient strength to bear the large working load. Patent Document 1 discloses a railway vehicle structure having the above-described structure.

JP 2009-255641 A

In order to reduce the number of finishing man-hours such as distortion removal caused by heat input due to welding, it is not necessary to bevel the joint (welded) part, and the structure that forms a hexahedron by mechanical fastening means such as bolts and rivets The structure and method for assembling the underframe that forms the floor of the structure are being studied.

When assembling the underframe with mechanical fastening means, a side beam provided extending in the longitudinal direction of the vehicle body at both ends in the width direction of the underframe and a pillow beam provided along the width direction of the underframe are bolts or When connected with rivets, the heads of these rivets and bolts may interfere with, for example, an air spring that constitutes a support device that comes into contact with the longitudinal end of the pillow beam. In order to avoid interference between the bolt head and the air spring, if the pillow beam has a counterbore hole that can accommodate the bolt head, the thickness of the pillow beam is generated in the depth of the counterbore and the bolt seating surface. The thickness must be the same as the sum of the thickness that can bear the load. When the thickness of the pillow beam increases, there is a possibility that not only the material cost increases, but also the inconvenience such as the weight of the frame (structure) increases.

An object of the present invention is to provide an air spring that is in contact with the lower surface of a base frame (pillow beam) in a rail vehicle structure having a base frame in which pillow beams, center beams, floor materials and the like are configured by mechanical fastening means. Another object of the present invention is to provide a rail vehicle structure that can suppress an increase in material cost and weight without interfering with the above-described mechanical fastening means.

In order to achieve the above object, the rail vehicle structure of the present invention includes, as basic means, side beams provided along the longitudinal direction of the frame at both ends in the width direction of the frame, and the longitudinal length of the frame. A middle beam provided along the longitudinal direction of the underframe from both ends in the direction toward the central portion in the longitudinal direction of the underframe, and along the width direction of the underframe in a manner crossing the middle beam A pillow beam provided, a plate material provided in the pillow beam at a portion where the center beam and the pillow beam intersect, and an air spring provided in a carriage are provided in the pillow beam at a portion in contact with the pillow beam. A first fastening portion in which both end portions in the longitudinal direction of the pillow beam and the side beams are fastened by mechanical fastening means, a central portion in the longitudinal direction of the pillow beam, and the middle A second fastening portion fastened to the beam by mechanical fastening means, and the air Counterbore to accommodate the head of the mechanical fastening means which is disposed on the second fastening part I included in the received is intended to be provided to the bolster to have a the air spring bearing.

In the rail vehicle structure having the underframe constituted by the mechanical fastening means, the air spring brought into contact with the lower surface of the underframe (pillow beam) and the mechanical fastening means described above do not interfere with each other. A rail vehicle structure capable of suppressing an increase in material cost and weight can be provided.

FIG. 1 is a side view of a railway vehicle. FIG. 2 is a perspective view of the railway vehicle structure of the first embodiment as viewed from below. FIG. 3 is an enlarged view of a portion A shown in FIG. 4 is a cross-sectional view of the underframe shown in FIG. 3 taken along the line BB. FIG. 5 is a perspective view of the railcar structure of the second embodiment as viewed from below. 6 is a cross-sectional view taken along the line cc of the underframe shown in FIG.

A rail vehicle is a general term for vehicles operating along an installed track, and means a rail vehicle, a monorail vehicle, a new transportation system vehicle, a tram, and the like. In the following embodiment, a railway vehicle will be described as an example of a rail vehicle.
Hereinafter, a railway vehicle structure according to the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a railway vehicle. The railway vehicle is composed of a railway vehicle structure 1 (hereinafter referred to as structure 1), a carriage 2, and electrical equipment and interior parts. The structure 1 is erected at a frame 10 (see FIG. 2) forming a floor, side structures 20 erected at both ends in the width direction of the framing 10, and both ends of the frame 10 in the longitudinal direction. And a roof structure 40 supported by the upper end portion of the side structure 20 and the upper end portion of the wife structure 30. As shown in FIG. 1, the side structure 20 is provided with a window 22 for daylighting and ventilation, a side sliding door 21 used for passengers and the like.

Both ends of the structure 1 in the longitudinal direction (the direction of the arrow 100 in FIG. 3) are supported by the carriage 2 so as to be movable on the track. Pillow beams 15 are provided along the width direction of the underframe on the lower surface of the underframe that forms the floor of the structure 1 and where the carriage 2 is provided. Air springs 5 (only one of them is shown) are provided on both sides of the central portion in the longitudinal direction of the carriage frame 3 forming the carriage 2, and the structure 1 is supported via the air springs 5.

The air spring 5 has a function of suppressing vibrations of the carriage 2 caused by track irregularities and the like from propagating to the structure 1 and maintaining the floor height of the structure 1 constant according to increase / decrease in the number of passengers. Take on. The cart 2 shown in FIG. 1 is an inner frame type cart provided on the inner side (track center side) of the wheel on which the frame 3 forms the wheel shaft 4.

2 is a perspective view of the railcar structure of the first embodiment as viewed from below, and FIG. 3 is an enlarged view of a portion A shown in FIG. 4 is a cross-sectional view of the underframe shown in FIG. 3 taken along the line BB.
Side beams 11 are provided at both ends in the width direction of the underframe 10 so as to extend from the side structure 20, and end beams 12 are provided at both ends in the longitudinal direction. At the center of the end beam 12 in the width direction, a connector receiver 13 is provided that includes a connector (not shown) that connects the vehicles to each other when a plurality of railway vehicles are connected to form a knitting. Two middle beams 14 extending in the longitudinal direction of the frame 10 are provided behind the end beam 12 (near the center in the longitudinal direction of the frame 10).

A pillow beam 15 extending in the width direction of the frame 10 (in the direction of arrow 110 in FIG. 3) is provided at a position away from the end beam 12 toward the center in the longitudinal direction of the frame 10 by a predetermined distance. The pillow beam 15 is connected to the side beam 11 with bolts 91 (see FIG. 4) at the bolt fastening portions 56 (see FIG. 3) at both ends in the longitudinal direction (the direction of the arrow 110 in FIG. 3). The bolt fastening portion 57 (see FIG. 3) near the center in the longitudinal direction is fastened to the two middle beams 14 by mechanical joining means such as bolts 90 (see FIG. 4).

The bolt fastening portions 56 that connect the end portions in the longitudinal direction of the plate-like members 51 forming the pillow beam 15 and the side beams 11 are provided in two or one row along the longitudinal direction of the structure 1. Similarly, the site | part which fastens the center part of the longitudinal direction of the plate-shaped member 51 and the middle beam 14 is the bolt fastening part 57 near the center part of the longitudinal direction of the plate-shaped member 51, and the bolt from the edge part of a longitudinal direction. The fastening portions 58 are arranged in two rows.

A central pin receiver 17 is provided in the longitudinal center of the lower surface of the pillow beam 15 (the surface on which the carriage 2 is provided), and the longitudinal direction of the pillow beam 15 (in FIG. 3) is adjacent to the central pin receiver 17. Two air spring receivers 16 are provided along the direction of the arrow 110.

The floor portion of the underframe 10, the side structure 20, and the roof structure 40 are formed by arranging a plurality of hollow extruded profiles made of aluminum alloy along the longitudinal direction of the vehicle body, and joining ends in the width direction of adjacent hollow extruded profiles. It is comprised by joining. The side beams 11 are hollow extruded shapes made of aluminum alloy along the longitudinal direction of the vehicle body, and are provided at both ends in the width direction of the underframe 10. The end beams 12 are configured by joining a plate-shaped member made of an aluminum alloy and a beam-shaped member, and are provided at both ends in the longitudinal direction of the underframe 10.

The intermediate beam 14 (see FIG. 3) is an aluminum alloy extruded shape having an I-shaped cross-sectional shape provided along the longitudinal direction of the structure 1, but the cross-sectional shape is not limited to the I-shaped but U-shaped or L-shaped. Any arbitrary shape may be used. The end beam 12 and the middle beam 14 may be made of steel. In this case, the end beam 12 and the middle beam 14 and the aluminum alloy floor portion of the underframe 10 are fastened by a mechanical fastening means. .

The end beam 12, the middle beam 14, and the pillow beam 15 are not only a portion that supports a coupler that links the vehicles, but also a connection portion with the carriage 2 that supports the structure 1. These parts are equipped with a tensile load and compression via a coupler in the process of starting a knitted vehicle consisting of a plurality of vehicles and accelerating to constant speed running or stopping from constant speed running through deceleration. A high strength is required because a load acts or a traction force or a braking force acts from the carriage 2.

Since the end beam 12, the middle beam 14, and the pillow beam 15 are made of steel members having high mechanical strength, floor members and side beams that are part of the frame 10 made of an aluminum alloy extruded shape. 11 and the intermediate beam 14 are joined by mechanical fastening means such as bolts and rivets instead of welding.

The configuration of the pillow beam 15 will be described with reference to FIGS. 3 and 4. The pillow beam 15 has a steel plate-like member 51 as a main part, and includes a plurality of steel width-direction beams 52 on the surface of the plate-like member 51 on the carriage 2 side. Are provided with a plurality of longitudinal steel beams 54 on the surface.
Further, the portion where the plate-like member 51 intersects (contacts) the two aluminum alloy intermediate beams 14 has a width dimension substantially the same as the width of the intermediate beam 14 along the longitudinal direction of the structure 1. In addition, two steel plate members 61 having substantially the same length dimension as the width direction (direction along the longitudinal direction of the structure 1) of the pillow beam 15 at a portion intersecting the pillow beam 15 are welded. The width direction beam 52, the longitudinal direction beam 54, and the plate material 61 are joined to the plate-like member 51 by welding to constitute an integral pillow beam 15.

There is sufficient space between the lower surface of the underframe 10 and the upper surface of the plate-like member 51 constituting the pillow beam 15, and a plurality of wires and A wiring / piping module 60 in which piping is bundled is provided in such a manner as to penetrate the pillow beam 15 from the longitudinal end of the structure 1 toward the center.
In particular, since the longitudinal beam 54 is welded to the plate-like member 51 in a manner along the longitudinal direction of the structure 1, the wiring / pipe module 60 and the non-modulated wiring / pipe interfere with the longitudinal beam 54. It can be easily arranged in the space between the lower surface side of the frame 1 and the plate-like member 51 without doing.

An air spring receiver 16 is provided at a portion of the plate-like member 51 where the air spring 5 (see FIG. 1) abuts, and a central portion in the longitudinal direction of the pillow beam 15 that serves as a connecting portion between the carriage 2 and the structure 1. Is provided with a central pin receiver 17. The surface of the plate-like member 51 on which the air spring receiver 16 is constructed and the center pin receiver 17 is provided is finished smoothly according to the shape of the parts provided in the carriage 2 so that the carriage 2 and the structure can be combined with high accuracy. ing.

In the inner frame bogie shown in FIG. 1, since the bogie frame 3 is provided on the track center side of the wheel, the interval L1 (see FIG. 4) between the air springs 5 provided in the bogie frame 3 tends to be small. Therefore, the

bolt fastening portions

57 and 58 arranged in two rows for fastening the plate-like member 51 and the middle beam 14 are located within the range of the air spring receiver 16 provided in the plate-like member 51 of the pillow beam 15. There is a case.

In the

bolt fastening portions

57 and 58 that fasten the intermediate beam 14 and the plate-like member 51, a tool for fastening the bolt 90 to the plate-like member 51 in order to prevent the top of the bolt 90 from interfering with the air spring receiver 16. A counterbore having a diameter greater than or equal to the outer diameter and greater than or equal to the height of the top of the bolt 90 is provided. Even when the counterbore depth is about the same as the thickness of the plate-like member 51, the plate 61 is welded to the portion overlapping the middle beam 14 of the plate-like member 51 to increase the total plate thickness. Therefore, the counterbore can be easily constructed in the plate-like member 51 without worrying about the depth of the counterbore.

Furthermore, the width dimension of the plate material 61 provided at the portion where the intermediate beam 14 and the pillow beam 15 intersect is substantially the same as the width of the intermediate beam 14, and the length dimension of the plate material 61 is substantially the same as the width of the pillow beam 15. Therefore, it is possible to suppress an increase in weight as in the case of increasing the thickness of the entire plate-like member 51, increase the rigidity of the plate-like member 51 forming the pillow beam 15, and suppress a decrease in the strength thereof. Furthermore, since the plate member 51 which is the main part of the pillow beam 15 is provided with the plate material 61, the counterbore hole can be easily constructed in the plate member 51.

With the above configuration, the plate-like member 51 forming the pillow beam 15 can be provided with a counterbore hole that can accommodate the head of the bolt 90 that is a mechanical fastening means, so the air spring 5 provided in the carriage 2 and the bolt 90 can be provided. Can be prevented from interfering with the head, and the strength required for the frame 10 can be satisfied.

Furthermore, with this configuration, the wiring / piping module 60 that is continuous in a manner of penetrating the pillow beam 15 from the end in the longitudinal direction (see FIG. 3, the direction of the arrow 100) of the structure 1 across the pillow beam 15 to the center. Since it can be provided, the structure 1 can be provided with wiring and piping with a small man-hour.

In the first embodiment, the structure 1 including the inner frame carriage is described as an example. However, the structure 1 is not limited to including the inner frame carriage, and the

bolt fastening portions

57 and 58 are included in the range of the air spring receiver 16. If it is, the effect mentioned above can be produced. 4 shows that the bolt 90 is composed of a bolt and a nut as an example of the mechanical connection means, but instead of the nut, a plate-like screw seat may be provided. A part having a thread groove may be embedded in the beam 14. The configuration replacing the nut can also be applied to the

bolts

90 and 92 of Example 2 described later.

Example 2 will be described with reference to FIGS. The description related to the same configuration as the description related to the configuration described in the first embodiment is omitted, and the configuration and functions different from those in the first embodiment are mainly described.

FIG. 5 is a perspective view of the base frame constituting the rail vehicle structure of Example 2 as viewed from below, and FIG. 6 is a cross-sectional view taken along the line cc of FIG.

Unlike the case of the first embodiment, the design factors of the structure 1 such as the positional relationship between the intermediate beam 14 and the wiring / piping module 60, or the distance between the air springs 5 provided in the carriage frame 3 becomes L2. The bolt fastening arranged in two rows for fastening the plate-like member 51 and the middle beam 14 within the range of the air spring receiver 16 provided in the plate-like member 51 of the pillow beam 15 due to the design factors of the cart 2 Only the bolt fastening portion 58 of the

portions

57 and 58 may be included.

In this case, the thickness of the plate-like member 51 is set to a thickness that allows a counterbore hole that can accommodate the head of the bolt 90 (see FIG. 4) provided to the bolt fastening portion 58 to be formed, and no counterbore hole is provided. The number of the bolts 92 provided to the bolt fastening portion 57 is made larger than the number of the bolts 90 at the corresponding part.
Alternatively, the size (size) of the bolt 90 provided for the bolt fastening portion 58 is M16, and the size of the bolt 92 provided for the bolt fastening portion 57 is M22. If the bolt size is M16, since the bolt head is smaller than that of M22, the depth of the counterbore can be reduced, so that an increase in the plate thickness (weight) of the plate-like member 51 can be suppressed. .

With this configuration, the plate member 51 at the intersection (overlapping portion) between the plate member 51 and the middle beam 14 is provided with a plate material having a width substantially equal to the width of the middle beam 14 (corresponding to the plate material 61 of the first embodiment). Even if it is not attached, the strength required for the underframe 10 can be satisfied.

With the above configuration, an increase in the weight of the pillow beam 15 can be suppressed, and the pillow beam 15 and the intermediate beam 14 can be firmly coupled, so that the strength required for the frame 10 can be satisfied.

Furthermore, interference between the air spring 5 provided in the carriage 2 and the head of the bolt 90 can be suppressed.

Furthermore, with this configuration, a wiring / piping module that continues in a manner that penetrates the pillow beam 15 from the end in the longitudinal direction of the structure 1 (see FIG. 3, the direction of the arrow 100) to the center with the pillow beam 15 interposed therebetween. Since 60 can be provided, the structure 1 can be provided with wiring and piping with a small man-hour.

DESCRIPTION OF SYMBOLS 1 ... Railway vehicle structure 2 ... Carriage 3 ... Carriage frame 4 ... Wheel 5 ... Air spring 10 ... Base frame 11 ... Side beam 12 ... End beam 13 ... Coupler receiver 14 ... Middle beam 15 ... Pillow beam 16 ... Air spring receiver 17 ... Center pin holder 20 ... Side structure 21 ... Side sliding door (entrance)
22 ... Window 30 ... Wife structure 40 ... Roof structure 51 ... Plate-like member 52 ... Width direction beam 54 ...

Longitudinal direction beam

56, 57, 58 ... Bolt fastening part 60 ... Wiring /

piping module

90, 91, 92 ... Bolt 100 ... An arrow indicating the longitudinal direction of the structure 110... An arrow indicating the width direction of the structure

Claims

Side beams provided along the longitudinal direction of the frame at both ends in the width direction of the frame,
From both ends in the longitudinal direction of the underframe toward the central portion in the longitudinal direction of the underframe, a middle beam provided along the longitudinal direction of the underframe,
Pillow beams provided along the width direction of the underframe in a manner that intersects the middle beam,
A plate member provided in the pillow beam at a portion where the intermediate beam and the pillow beam intersect;
An air spring support provided in the pillow beam at a portion where the air spring provided in the carriage is in contact with the pillow beam;
A rail vehicle structure comprising:
A first fastening portion in which both ends in the longitudinal direction of the pillow beam and the side beam are fastened by mechanical fastening means;
A central portion in the longitudinal direction of the pillow beam and the middle beam have a second fastening portion fastened by a mechanical fastening means;
A counterbore that can accommodate the head of the mechanical fastening means disposed in the second fastening portion included in the air spring receiver is provided in the pillow beam having the air spring receiver. Rail vehicle structure to be used.
In the rail vehicle structure according to claim 1,
The rail vehicle structure according to claim 1, wherein a width dimension of the plate member is substantially the same as a width dimension of the intermediate beam.
In the rail vehicle structure according to claim 1,
The rail vehicle structure, wherein the side beams and the middle beam are made of an aluminum alloy, and the pillow beams and the plate material are made of steel.
In the rail vehicle structure according to claim 1,
The second fastening portion is composed of one row of mechanical fastening portions and the other row of mechanical fastening portions arranged in two rows,
The air spring support includes a mechanical fastening portion of the one row;
A rail vehicle structure comprising a counterbore that can accommodate the heads of the mechanical fastening means of the one row included in the air spring receiver in the pillow beam having the air spring receiver.
In the rail vehicle structure according to claim 4,
The rail vehicle structure according to claim 1, wherein the number of mechanical fastening portions in the one row is smaller than the number of mechanical fastening portions in the other row.
In the rail vehicle structure according to claim 5,
The rail vehicle structure according to claim 1, wherein a size of the mechanical fastening portion of the one row is smaller than a size of the mechanical fastening portion of the other row.