WO2016178265A1

WO2016178265A1 - Rail vehicle

Info

Publication number: WO2016178265A1
Application number: PCT/JP2015/063071
Authority: WO
Inventors: 雅浩田代; 誠人山本
Original assignee: 株式会社日立製作所
Priority date: 2015-05-01
Filing date: 2015-05-01
Publication date: 2016-11-10
Also published as: JP6356342B2; JPWO2016178265A1

Abstract

A bogie bolster (11) of the present invention elastically supported by an air suspension disposed on the upper surface of a bogie frame is formed of a central bogie bolster (20) located centrally in the width direction and end bogie bolsters (21) disposed on both sides thereof. These bogie bolsters (20, 21) are extruded members having an upper surface plate, a lower surface plate, and multiple ribs connecting those together. As a result of an upper surface plate (23a) and a lower surface plate (23b) forming the central bogie bolster (20) being disposed at a level higher than an upper surface plate (21a) and a lower surface plate (21b) forming the end bogie bolsters (21), it becomes possible to form a space in the height direction of a vehicle body between the lower surface of the central bogie bolster (20) and the upper surface of the bogie frame, and dispose a bolster-less bogie below the bogie bolster (11).

Description

Rail vehicle

The present invention relates to a rail vehicle such as a monorail vehicle, and more particularly to a rail vehicle having a frame that can be provided with a bolsterless bogie.

The structure of a rail vehicle such as a monorail vehicle that operates along a laid track includes a base frame that forms a floor surface, a side structure that is erected at an end in the width direction of the base frame, and a longitudinal direction of the base frame. It consists of the end structure and the roof structure placed on the side structure and the upper end of the roof structure.

Generally, underframes receive vertical loads due to the weight of passengers, various equipment, etc., and in knitted vehicles in which multiple vehicles are connected, during acceleration / deceleration, tensile loads and compression are transmitted from the front and rear vehicles via connectors. A load is applied. The underframe is required to have strength to withstand these loads.
For this reason, the underframe is arranged along the rail direction at the end in the width direction of the underframe, along with the end beam arranged along the sleeper direction at the end in the longitudinal direction. The side beams to be carried, the rigid beams that are arranged along the direction of the sleepers, and that convey the traction force, braking force, and body weight of the cart to the cart, and the end beams and the pillow beams are connected along the rail direction. And a middle beam that bears compressive and tensile loads from the coupler.

These side beams, center beams, and pillow beams are provided with a truss structure inside a quadrangular or C-shaped cross-sectional shape or a quadrilateral outer edge so as to suppress an increase in weight and withstand deformation such as bending and compression. It consists of members.
Patent Document 1 discloses a bolsterless bogie in which a bogie is directly mounted on a pillow beam on a underframe that forms the structure of a railway vehicle.

JP 2002-145060 A

As for the monorail cart, conventionally, a bolster cart in which a bolster (cart on the side of the cart) along the direction of the sleeper is provided at the center in the longitudinal direction of the upper portion of the cart frame that supports the traveling wheels.
The bolster cart connects both ends of the bolster in the sleeper direction to the side beams of the vehicle body side frame by bolster anchors (links), and vertically moves the vehicle body by air springs placed on the upper portions of the bolster ends. To support.

In recent years, not only railcar bogies but also monorail bogies, the bolster at the top of the bogie frame has been omitted to simplify the bogie structure and reduce weight by reducing the number of parts. The adoption of a bolsterless bogie equipped with an air spring that supports the vehicle body at the top is being studied.
The bolsterless bogie is provided with an air spring on the upper surface of the bogie frame, and in place of the bolster anchor, a central pin extending downward from the central portion of the pillow beam of the underframe is provided, and this central pin is inserted into the bogie frame. Therefore, a structure for connecting the underframe to the underframe is adopted.

By omitting the bolster, the air spring is placed directly on the upper surface of the bogie frame positioned below the bolster thickness, so that the lower surface of the vehicle body (the frame frame side pillow beam) supported by the air spring abuts. The both ends of) also go down.
However, the height position of the lower surface of the vehicle body corresponding to the central part of the carriage (the central part of the underframe side pillow beam) is provided with a center pin, a damper, a traction device, etc. for connecting the vehicle body and the carriage. It is necessary to secure a space in the height direction. Even if the height of the base frame constituting the vehicle body is matched to the platform entry / exit surface, the distance between the bottom surface of the base frame and the top surface of the truck frame is reduced by the thickness of the bolster. For this reason, it is not possible to employ a structure in which the upper end of the air spring and the upper end of the center pin are brought into contact with the lower surface of the body-side pillow beam along the width (sleeper) direction of the body-side pillow beam. It becomes possible.

In order to solve this problem, measures such as providing another member for height adjustment on the contact surface of the body side pillow beam with the upper surface of the air spring or specially designing the air spring must be taken. In other words, the structure is complicated, the weight is increased, and the manufacturing cost is increased.
Therefore, an object of the present invention is to provide a vehicle body side pillow beam having different heights of the end portion in the sleeper direction and the lower surface of the center portion, without increasing the manufacturing cost with a simple structure, and having high rigidity and bolsterless. It is to provide a rail vehicle that enables deployment of a bogie.

In order to solve the above-mentioned problem, in a rail vehicle including a pillow beam elastically supported by an air spring placed on the upper surface of a carriage frame, the pillow beam is a central pillow beam located at the center in the width direction. And end pillows positioned on both sides thereof, the central pillow beam and the end pillow beam having an upper surface plate, a lower surface plate, and a plurality of connection ribs connecting them to each other. A lower plate of the central pillow beam, the upper plate and the lower plate constituting the central pillow beam being higher than the upper plate and the lower plate constituting the end pillow beam. A space is formed in the height direction of the vehicle body between the upper surface of the carriage frame.

According to the present invention, a rail vehicle having a high rigidity and a pillow beam having different heights at the end of the sleeper direction and the lower surface of the central portion without increasing the manufacturing cost, and enabling the deployment of a bolsterless bogie. Can be realized.

FIG. 1 is a schematic diagram showing the formation of a monorail vehicle that runs on an elevated track girder. 2 is a cross-sectional view taken along the line AA of the monorail vehicle shown in FIG. FIG. 3 is a BB cross-sectional view of the monorail vehicle shown in FIG. 4 is a CC cross-sectional view of the underframe of the monorail vehicle shown in FIG. FIG. 5 is a DD cross-sectional view of the pillow beam in the frame of the monorail vehicle shown in FIG. FIG. 6 is a plan view of the pillow beam shown in FIG.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.

Hereinafter, the structure of the monorail vehicle according to the present embodiment will be described.
First, each direction is defined. Each direction includes a longitudinal direction 110 along the track girder on which the monorail vehicle travels, a width direction (sleeper direction) 100 that intersects the track girder in the horizontal plane, and a height direction 120. Hereinafter, the longitudinal direction (110 ), The width direction (100), and the height direction (120).

FIG. 1 is a schematic diagram showing the formation of a monorail vehicle that runs on an elevated track girder.
The vehicle body 1 of a monorail vehicle is a straddle-type monorail that travels in a manner that straddles a track girder 60 that is laid on an elevated road. Although not shown, the longitudinal end of the vehicle body 1 is supported by a carriage. As shown in FIGS. 2 and 4, the carriage 30 rolls on the upper surface of a track girder 60 having a substantially rectangular cross section. The traveling wheel 25, the guide wheel 26 that rolls on the upper side surface of the track girder 60 and guides the carriage 30 along the curvature of the track girder 60, and the lower side surface of the track girder 60 rolls to improve the running stability of the carriage 30. A stabilizing wheel 27 is provided.

FIG. 2 is a cross-sectional view taken along line AA of the monorail vehicle shown in FIG. The vehicle body structure constituting the vehicle body 1 includes a base frame 10 forming a floor surface, a side structure 50 erected at an end portion in the width direction of the base frame 10, and an end portion in the longitudinal direction (110) of the base frame 10. It is a hexahedron composed of a head (wife) structure (not shown) that is erected, and a side structure 50 and a roof structure 51 placed on the upper end of the wife structure. Note that an air conditioner or the like is installed above the roof structure 51.

The vehicle body 1 is supported by the carriage 30 via air springs 31 that are in contact with the lower surface of both ends of the frame 10 in the longitudinal direction (110).
The carriage 30 is provided with a carriage frame 30a whose cross-sectional shape in the width direction (100) is an inverted U shape, and the traveling wheel 25, the guide wheel 26, and the stabilizing wheel 27 described above are provided on the carriage frame 30a. The wheels 25 to 27 are in contact with the upper surface and both side surfaces of the track girder 60, support the weight of the vehicle body 1 in a rollable manner, and guide the carriage 30 along the track girder 60 for stable running. enable.

The carriage 30 is disposed below the pillow beam 11 extending in the width direction (100) at both ends in the longitudinal direction (110) of the frame 10 constituting the vehicle body structure. The pillow beam 11 forming the vehicle body 1 is elastically supported by a pair of air springs 31 placed directly on the upper surface of the carriage frame 30a. A center pin 33 is attached to the central portion in the width direction (100) of the pillow beam 11 that forms the base frame 10 of the vehicle body 1 so that the center pin 33 hangs down. It is inserted into a space formed in the central portion of the longitudinal direction (110) of 30a and is elastically connected to the bogie frame 30a via the traction device 34.

The traction device 34 functions to transmit the driving force and braking force of the carriage 30 to the vehicle body 1, and the center pin 33 and the carriage frame 30 a are connected by a damper 32 disposed along the width direction (100). . The damper 32 suppresses transmission of the vibration in the width direction (100) of the traveling carriage 30 to the vehicle body 1 via the carriage frame 30a.
A side skirt 52 is provided at the lower end of the side structure 50 of the vehicle body 1 so as to extend downward and cover the carriage 30. A sound absorbing material (not shown) is attached to the surface on the side of the track girder 60 to absorb rolling noise generated from the wheels and noise generated from underfloor equipment.

Of the upper surface of the underframe 10, both end portions in the width direction (100) in particular are almost the same height as the upper surface of the platform 62 along the longitudinal direction (110) so that passengers can easily get on and off the vehicle body 1. Set to
That is, the height of the upper end of the air spring 31 that supports the frame 10 and the height of the pillow beam 11 on both sides in the width direction (100) so that the height of the upper surface of the frame 10 is the same as the height of the platform 62. The height of the lower surface is determined.

On the other hand, since it is necessary to attach the center pin 33 and the damper 32 to the lower surface of the central portion in the width direction (100) of the pillow beam 11, the lower surface of the pillow beam 11 is the component in the central portion of the width direction (100). It is necessary to ensure the height of the central portion of the pillow beam 11 so as not to interfere with the beam.
Therefore, in the present embodiment, the cross-sectional shape of the pillow beam 11 in the width direction (100) is higher than the both ends of the pillow beam 11 in the width direction (100).

3 is a BB cross-sectional view of the monorail vehicle shown in FIG. 1, and FIG. 4 is a DD cross section along the width direction (100) of the pillow beam 11 in the frame 10 of the monorail vehicle shown in FIG. FIG.
The frame 10 forming the floor of the vehicle body 1 of the monorail vehicle has an end frame 10a that constitutes an end in the longitudinal direction (110) of the frame 10 and a central portion in the longitudinal direction (110) of the frame 10. It comprises a central frame 10b.

The frame 10 is provided with side beams 17 at both ends in the width direction (100), and end beams 19 are provided at the ends in the longitudinal direction (110) of the end frame 10a. The

end side beams

13a and 13b and the side beam 14 are arranged at predetermined intervals along the end beam 19 toward the central portion in the longitudinal direction (110) of the frame 10. Pillow beams 11 to which the carriage 30 is connected are disposed in the width direction (100) at a portion defined by the end lateral beams 13b and the lateral beams 14, and end beams 19 at both ends are connected.

The traveling wheels 25 provided in the carriage 30 are located on both sides of the longitudinal direction (110) of the pillow beam 11. The end lateral beam 13b and the lateral beam 14 are connected by a pair of middle beams 15b disposed on both sides in the width direction (100) of the traveling wheel 25, and the wheel chamber is formed by the end lateral beam 13b, the lateral beam 14, and the pair of middle beams 15b. 12 is partitioned.

The center part in the width direction (100) of the end beam 19 and the end side beam 13a is connected by a pair of middle beams 15a laid in the longitudinal direction (110). A coupler (not shown) for connecting the vehicle body 1 is attached between the pair of middle beams 15a.
The width direction (100) center part of the end part cross beam 13a and the width direction (100) both ends of the end part cross beam 13b are connected by the diagonal beam 16 arrange | positioned diagonally. The tensile and compressive loads applied from the coupler to the underframe 10 are transmitted from the end lateral beam 13a to the side beam 17 via the oblique beam 16.
On the other hand, a floor plate 18 having a plurality of reinforcing ribs is provided along the longitudinal direction (110) in the central frame 10b defined by the horizontal beam 14 and the side beam 17.

5 is a DD cross-sectional view along the pillow beam 11 in the underframe 10 of the monorail vehicle shown in FIG. 3, and FIG. 6 is a plan view of the pillow beam 11 shown in FIG.
The pillow beam 11 includes a central pillow beam 20 disposed at a central portion in the width direction (100), and end pillow beams 21 connected to both ends of the central pillow beam 20 in the width direction (100). Is done. The center part pillow beam 20 and the end part pillow beam 21 are comprised from the extrusion shape material which connected the two upper surface board and lower surface board which oppose with the rib.

The central pillow beam 20 is a hollow extruded shape extruded in a direction along the longitudinal direction (110), and the end pillow 21 is a hollow extruded shape extruded in a direction along the width direction (100). It is.
The central pillow beam 20 and the end pillow beam 21 are abutted in the width direction (100), and are joined by friction stir welding or welding at the joint 24.
On the other hand, the end pillow 21 includes an upper surface plate 21a, a lower surface plate 21b, and a plurality of connection ribs 21c (see FIG. 6) that connect these in the width direction and the vertical direction.

The central pillow beam 20 is further configured by a central portion 23 and end portions 22 connected to both end portions in the width direction (100). The central portion 23 is a hollow extruded shape obtained by integrally extruding an upper surface plate 23a, a lower surface plate 23b, and a plurality of connection ribs 23c that connect these along the longitudinal direction (110). Further, the end portion 22 is formed by integrally molding the upper surface plates 22a1, 22a2, 22a3, the lower surface plates 22b1, 22b2, 22b3 and a plurality of connection ribs 22c1 to 22c5 that connect them along the longitudinal direction (110). Hollow extruded profile.

More specifically, the end portion 22 includes an upper surface plate 22a1 bonded to the width direction (100) outer end portion of the upper surface plate 23a of the central portion 23 by the bonding portion 24, and an upper surface plate 21a of the end pillow 21. The upper surface plate 22a3 is joined to the inner end portion in the width direction (100) by the joint portion 24, and the upper surface plate is composed of the upper surface plate 22a2 that obliquely connects both the upper surface plates 22a1 and 22a3. Further, the end portion 22 has a width direction (100) of the lower surface plate 23b of the central portion 23 on the outer end portion of the lower surface plate 22b joined by the joint portion 24 and the width direction of the lower surface plate 21b of the end pillow 21. (100) The lower surface plate 22b3 joined to the inner end portion by the joining portion 24 and the lower surface plate comprising the lower surface plate 22b2 that obliquely connects both the lower surface plates 22b1 and 22b3 are provided.

The end 22 of the central pillow beam 20 is connected to the upper surface plate (22a1 to 22a3), the lower surface plate (22b1 to 22b3), and a plurality of connection ribs 22c1, 22c3, and 22c5 that connect them vertically. This is a hollow shape member in which the connecting rib 22c2 to be connected and the connecting rib 22c4 to be connected obliquely are integrally formed by extrusion.

With the above configuration, the height of the upper surface plate 23a in the central portion 23 of the central pillow beam 20 is higher than that of the upper surface plate 21a of the end pillow beam 21, and the height of the lower surface plate 23b in the central portion 23 is also equal to the end pillow. The beam 21 is disposed at a position higher than the lower surface plate 21b. In other words, a space in the height direction is formed between the upper surface of the bogie frame of the bogie 30 placed below the pillow beam 11 and the lower surface of the central pillow beam 20.
The width direction (100) inner end portion Pa1 of the upper surface plate 22a2 and the width direction (100) inner end portion Pb1 of the lower surface plate 22b2 are connected by a connection rib 22c3 extending substantially vertically. Similarly, the width direction (100) outer end portion Pa2 of the upper surface plate 22a2 and the width direction (100) outer end portion Pb2 of the lower surface plate 22b2 are connected by the connection rib 22c1.

Furthermore, the width direction (100) outer end portion Pa2 of the upper surface plate 22a2 and the width direction (100) inner end portion Pb1 of the lower surface plate 22b2 are connected by a connecting rib 22c2 extending substantially horizontally. The arrangement of the connecting ribs 22c1 to 22c5 increases the bending rigidity of the pillow beam 11.
On the other hand, since the end portion in the width direction (100) of the wheel chamber 12 covering the traveling wheel 25 of the carriage 30 is placed between the outer end portions Pa2 in the width direction (100) of the upper surface plate 22a2 (see FIG. 4). ) In the central pillow beam 20, a portion that becomes a convex portion is covered with a cover that forms the wheel chamber 12.

With this configuration, the position of the lower surface of the central portion in the width direction (100) of the pillow beam 11 can be configured to be higher than the position of the lower surface of both ends of the pillow beam 11 in the width direction (100). Does not cause a rise. Further, both ends of the pillow beam 11 in the width direction (100) are supported by the air springs 31 and the center pin 33 can be accommodated in the center of the width direction (100) of the pillow beam 11, so that the bolsterless cart can be used as a pillow. It can be deployed below the beam 11 (vehicle body 1).

Further, in the pillow beam 11, the central portion 23 of the central pillow beam 20 is disposed at a position higher than the position of the end pillow beam 21 of the pillow beam 11, and the central pillow beam 20 is positioned at the pillow beam 11. The function of the rib with respect to the whole is exhibited, and the bending (torsion) rigidity of the pillow beam 11 can be increased.
For this reason, even if a traction force and a braking force act on the lower end portion of the center pin 33 provided on the pillow beam 11 and a moment load acts on an axis about the width direction (100) of the pillow beam 11. The torsional deformation of the pillow beam 11 can be suppressed, and reinforcement for maintaining rigidity is not required.

Moreover, since the site | part which becomes a convex part among the center part pillow beams 20 which comprise the pillow beam 11 is located inside the wheel chamber 12 which covers the driving | running | working wheel 25 of a trolley | bogie, the influence which it has on cabin space is suppressed to the minimum. can do.

DESCRIPTION OF SYMBOLS 1 ... Car body 10 ... Underframe 10a ... End part frame 10b ... Center part frame 11 ... Pillow beam 12 ...

Wheel chamber

13a, 13b ... End side beam 14. ..

Cross beam

15a, 15b ... Middle beam 16 ... Diagonal beam 17 ... Side beam 18 ... Floor plate 19 ... End beam 20 ... Central pillow beam 21 ... End pillow beam 21a, 22a. 23a ...

Upper surface plates

21b, 22b, 23b ...

Lower surface plates

21c, 22c, 23c ... Connection ribs 22 ... End portions of the central pillow beam 20 23 ... Central portion of the central pillow beam 20 24 ... Junction 25 ... Running wheel 30 ... Bogie 31 ... Air spring 32 ... Damper 33 ... Center pin 34 ... Traction device 50 ... Side structure 51 ... Roof structure 52 ... Skirt 60 ... Track girder 62 ... Platform

Claims

In a rail vehicle provided with a pillow beam elastically supported by an air spring placed on the upper surface of the carriage frame,
The pillow beam is composed of a central pillow beam located in the center in the width direction and end pillow beams located on both sides thereof.
The central pillow beam and the end pillow beam are extruded shapes having an upper surface plate, a lower surface plate, and a plurality of connection ribs that connect these to each other,
By making the upper surface plate and the lower surface plate constituting the central pillow beam higher than the upper surface plate and the lower surface plate constituting the end pillow beam, the lower surface of the central pillow beam and the carriage frame A rail vehicle in which a space in the height direction of the vehicle body is formed between the upper surface and the upper surface.
In the rail vehicle according to claim 1,
The central pillow beam is an extruded shape produced by extrusion so that the connection rib is formed along the longitudinal direction of the vehicle body,
The rail vehicle according to claim 1, wherein the end pillow beam is an extruded shape member that is extruded so that the connection rib is formed along a width direction of the vehicle body.
In the rail vehicle according to claim 2,
A central pin connected to the carriage is disposed at the bottom of the central pillow beam,
A rail vehicle in which an air spring that supports the vehicle body is brought into contact with a lower portion of the end pillow beam.
In the rail vehicle according to claim 3,
The underframe is
An end transverse beam disposed on one side of the longitudinal direction of the body of the pillow beam;
A transverse beam disposed on the other side of the longitudinal direction of the body of the pillow beam;
A pair of intermediate beams disposed along the longitudinal direction of the vehicle body and connecting the end lateral beams and the lateral beams;
A rail vehicle comprising a cover that covers a wheel chamber defined by the end lateral beam, the lateral beam, and the middle beam.
In the rail vehicle according to claim 4,
The central pillow beam is composed of a central portion and end portions connected to both ends in the width direction of the central portion,
The end portion includes a first portion including an upper surface plate and a lower surface plate connected in parallel to the upper surface plate and the lower surface plate at both ends in the width direction of the central portion, and the end portion below the central portion. A second portion having an upper surface plate and a lower surface plate connected in parallel to the upper surface plate and the lower surface plate of the pillow beam, and an angle between the upper surface plate and the lower surface plate of the first portion and the second portion, respectively. A third portion having a top plate and a bottom plate connected to
Each of the upper surface plate and the lower surface plate of the third portion is connected at both ends in the width direction by connecting ribs in the vertical direction,
The rail vehicle according to claim 3, wherein an outer end portion in the width direction of the upper surface plate of the third portion and an inner end portion in the width direction of the lower surface plate are connected by a connecting rib extending in a horizontal direction.