JP2021098448A - Rail vehicle body structure and production method of the same - Google Patents

Abstract

To provide a rail vehicle body structure which can reduce both production cost and production lead time of a rail vehicle.SOLUTION: In a rail vehicle body structure of this invention, an upper surface of a cap beam 15 is on a level almost equal to an upper face of a floor plate 11 and a lower face of the cap beam 15 is lower than a lower face of the floor plate 11. On the floor plate 11, front floor plate notch parts 17a and rear floor plate notch parts 17b are arranged at positions, almost equal to through holes 16 in y direction and in front of a cap beam 15 and in rear of the beam respectively in x direction. From a vehicle center part of an underfloor to a vehicle end part, underfloor wirings 50 extend in x direction of a frame 10 and proceed via the rear floor plate notch part 17b, the through hole 16 and the front floor plate notch part 17a to the vehicle end part.SELECTED DRAWING: Figure 3

Description

The present invention relates to a rail vehicle structure and a method for manufacturing the same.

A rail vehicle structure, which is a structure of a rail vehicle such as a railroad vehicle, generally has a roof structure that constitutes an upper surface, a side structure that constitutes a side surface, an underframe that constitutes the lower surface, and a wife structure that constitutes an end face in the longitudinal direction. Consists of. In recent years, for the purpose of improving manufacturability and sound insulation, roof structures and side structures have been used by using hollow profiles made of aluminum alloy consisting of two opposing face plates and a plurality of ribs connecting the face plates. , The method of constructing an underframe and assembling it into a rail vehicle structure is becoming widespread.

Generally, the rail vehicle structure is connected to the bogie, which is a traveling device, via a pillow beam joined to the lower surface of the floor plate constituting the underframe near the longitudinal end. Since there is a floor plate above and a trolley below under the floor of the portion, it is difficult to secure a space for passing the underfloor wiring between the two. For this reason, in general, a through hole extending in the longitudinal direction of the underframe is provided inside the pillow beam, and the underfloor wiring extending from the center of the vehicle to the end of the vehicle is passed through the through hole.

Patent Document 1 shows an example of a conventional underframe structure. FIG. 1 of Patent Document 1 shows a structure in which a floor plate is formed of a hollow profile made of an aluminum alloy, and a corbel beam along the width direction of the underframe is joined to the lower surface of the floor plate. Further, FIG. 5 of Patent Document 1 shows a structure in which circular and elliptical through holes for passing underfloor wiring are provided inside the pillow beam.

Japanese Patent No. 3868203

In the configuration as shown in Patent Document 1, since the height of the corbel beam sandwiched between the floor plate and the carriage in the vertical direction is small, the size of the through hole provided inside the corbel beam is also small. For this reason, it is difficult to pass the connector required to connect the underfloor wiring to the underfloor equipment. With the connector removed, the underfloor wiring is passed through the through hole, and then the connector is connected to the end of the underfloor wiring. Was there. According to such an assembly process, since the worker is forced to work upward on the assembled rail vehicle structure, the workability is extremely poor, which is a factor that increases the manufacturing cost and manufacturing lead time of the rail vehicle. It was.

In view of the above problems, an object of the present invention is to provide a rail vehicle structure and a method for manufacturing the same, which can improve workability and reduce the manufacturing cost and manufacturing lead time of the rail vehicle.

In order to solve the above problems, one of the typical rail vehicle structures of the present invention comprises a roof structure constituting the upper surface, a side structure constituting the side surface, an underframe forming the lower surface, and an end surface. It has a wife structure, and the floor plate of the underframe is composed of a hollow profile composed of an upper surface plate, a lower surface plate facing the upper surface plate, and a plurality of ribs connecting the upper surface plate and the lower surface plate. In the rail vehicle structure
The corbel is attached to the floor plate along the width direction of the underframe, the upper surface of the corbel is located substantially on the same plane as the upper surface plate of the floor plate, and the lower surface of the corbel is the floor plate. The pillow beam is provided with a through hole extending in the longitudinal direction of the underframe, and the floor plate is connected to the through hole by cutting the bottom plate and ribs of the floor plate. Achieved by having a notch constructed by notching.

According to the present invention, it is possible to provide a rail vehicle structure and a method for manufacturing the same, which can improve workability and reduce the manufacturing cost and manufacturing lead time of the rail vehicle.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

FIG. 1 is a perspective view showing an example of a railroad vehicle structure according to an embodiment of the present invention. FIG. 2 is a perspective view of the lower surface of the underframe of the railway vehicle structure shown in FIG. 1 according to the embodiment of the present invention. FIG. 3 is an enlarged view of a region A on the lower surface of the underframe of the railway vehicle structure shown in FIG. FIG. 4 is a vertical cross-sectional view in the width direction corresponding to BB behind the pillow beam in the area A on the lower surface of the underframe of the railroad vehicle structure shown in FIG. FIG. 5 is an enlarged view of a region A on the lower surface of the underframe of the railway vehicle structure shown in FIG. 2 in another embodiment of the present invention. FIG. 6 is a vertical cross-sectional view in the width direction corresponding to CC behind the pillow beam in the area A on the lower surface of the underframe of the railroad vehicle structure shown in FIG. FIG. 7 is a flowchart showing a method of manufacturing a railroad vehicle structure according to an embodiment of the present invention. FIG. 8 is a flowchart showing a method of manufacturing a railroad vehicle structure according to another embodiment of the present invention.

Rail rolling stock is a general term for rolling stock that operates along the laid track, and means railroad rolling stock, trams, new transportation system rolling stock, monorail rolling stock, and the like. Hereinafter, embodiments of the present invention will be described by exemplifying a railroad vehicle as a typical example of a rail vehicle with reference to the drawings.

(Rail vehicle structure)
FIG. 1 is a perspective view schematically showing an example of a railroad vehicle structure according to an embodiment of the rail vehicle structure of the present invention, and is a view seen from below. Here, as shown in FIG. 1, the longitudinal direction (rail direction) of the railroad vehicle structure 1 is the x direction, and the width direction (sleeper direction) and the vertical direction (height direction) orthogonal to the x direction are the y direction and the z direction, respectively. And. The definitions of these directions are the same in other figures.

The railroad vehicle structure 1 includes a side structure 20 (only one is shown) erected at both ends of the underframe 10 in the y direction and a wife structure 40 (only one) erected at both ends of the underframe 10 in the x direction. (Fig.) And a roof structure 30 mounted on the upper end of the side structure 20 and the wife structure 40 in the z direction. The side structure 20 is provided with an entrance / exit 22 and a window 21 for passengers to get on and off.

The wife structure 40 is provided with a gangway 41 for passengers to move between adjacent vehicles. The main structure of the underframe 10 is a floor plate 11 made of a hollow profile made of an aluminum alloy composed of two facing face plates and a plurality of ribs connecting the face plates. Side beams 12 extending in the x direction are provided at both ends of the underframe 10 in the y direction, and end beams 13 extending in the y direction are provided at both ends of the underframe 10 in the x direction. Note that, in FIG. 1, the configurations of the front floor plate notch 17a, the rear floor plate notch 17b, and the periphery thereof are not shown, and these configurations will be described in detail with reference to FIGS. 2 to 4, which will be described later.

Next, the configuration of the underframe 10 near the end in the x direction will be described. Since the railroad vehicle structure 1 is supported by a bogie, which is a traveling device, via an air spring, or is connected via a towing device, the pillow beam 15 protrudes downward (−z direction) of the floor plate 11. It is joined to 11. Pillow beams 15 are provided near both ends in the x direction, respectively. Two fronts extending in the x direction are in front of the corbel 15 in the x direction (end side in the x direction of the railway vehicle structure 1) and rearward in the x direction (center side in the x direction of the railway vehicle structure 1). The middle beam 14a and the rear middle beam 14b are joined.

One end of the front middle beam 14a in the x direction is joined to the pillow beam 15, and the other end in the x direction is joined to the end beam 13.

Further, the other end of the rear middle beam 14b in the x direction is joined to the pillow beam 15, and one end of the rear middle beam 14b in the x direction gradually rises to a position in the height direction of the lower surface (face plate) of the floor plate 11. Is getting smaller. The pillow beam 15 is provided with a through hole 16 penetrating in the x direction.

2 is a perspective view of the lower surface of the underframe 10 in FIG. 1, FIG. 3 is an enlarged view of a region A near the corbel beam 15 in FIG. 2, and FIG. 4 is a BB behind the corbel beam 15 in FIG. The vertical cross-sectional view of is shown. Figures 2 and 3 show the top and bottom upside down.

The pillow beam 15 is integrally formed along the y direction from one side beam 12 toward the other side beam 12. Further, the middle beams that intersect the pillow beam 15 and are laid along the x direction are arranged on one side of the pillow beam 15 in the x direction and the front middle beam 14a and the other side in the x direction. It is composed of a rear middle beam 14b to be formed.

The upper surfaces of the front middle beam 14a, the rear middle beam 14b, and the pillow beam 15 are located on substantially the same plane as each other, and are located on substantially the same plane as the upper surface of the floor plate 11. The lower surfaces of the front middle beam 14a, the rear middle beam 14b, and the pillow beam 15 are located on substantially the same plane as each other and below the lower surface of the floor plate 11. The "substantially identical plane" means that the height difference between the planes is within ± 10 mm, preferably within ± 5 mm.

The front and rear floor plates 11 of the pillow beam 15 in the x direction are provided with a plurality of front floor plate notches 17a and rear floor plate notches 17b continuous with the through holes 16 and along the x direction. The positions of the front floor plate notch 17a and the rear floor plate notch 17b in the y direction are substantially the same, and are substantially the same as the positions of the through holes 16 in the y direction.
As shown in FIG. 4, the front floor plate notch 17a and the rear floor plate notch 17b are formed by removing a part of the lower surface plate and ribs constituting the floor plate 11 and then using the upper surface plate and the remaining ribs 18 remaining without being removed. It is composed. The through hole 16 is located between the lower surface of the remaining rib 18 and the lower surface of the pillow beam 15. The underfloor wiring 50 passes through the rear floor plate notch 17b, the through hole 16, and the front floor plate notch 17a in the x direction of the underframe 10 from the center of the underfloor vehicle in the x direction toward the end of the vehicle in the x direction. It will be laid along.

According to the above configuration, as compared with the conventional structure in which the through hole 16 is provided between the lower surface of the floor plate 11 and the lower surface of the pillow beam 15, the through hole is removed by removing a part of the lower surface plate and the rib of the floor plate 11. A large height of 16 can be secured, and therefore, the underfloor wiring 50 in which the underfloor wiring and the connector are previously connected by an outwork or the like can be passed through the through hole 16. That is, in the state where the railroad vehicle structure 1 is completed, the work of connecting the connectors in an upward posture by the worker becomes unnecessary, so that the burden on the worker, the manufacturing cost of the railroad vehicle, and the manufacturing lead time can be reduced.

Further, since the front floor plate notch 17a and the rear floor plate notch 17b have a plurality of residual ribs 18 having predetermined rigidity and strength, the structural strength characteristics required for various loads acting on the railway vehicle structure 1 are present. Can be secured.

In the present embodiment, the front floor plate notch 17a and the rear floor plate notch 17b are composed of the upper surface plate of the floor plate 11 and the remaining ribs 18 to secure the structural strength characteristics of the railway vehicle structure 1, but these are deleted. Alternatively, in addition to these, other strength members may be joined to form the structure.

Hereinafter, other embodiments of the rail vehicle structure according to the present invention will be described with reference to the drawings.
FIG. 5 shows an enlarged view of the region A in the vicinity of the corbel beam 15 in FIG. 2, and FIG. 6 shows a vertical cross-sectional view of CC behind the corbel beam 15 in FIG. FIG. 5 shows the top and bottom upside down. Since the configurations other than the front middle beam 14a, the rear middle beam 14b, the front opening 19a, the rear opening 19b, and the underfloor wiring 50 are the same as those in the above-described embodiment, the description thereof will be omitted.

In the embodiment described above, the corbel beam 15 divides the center beam in the x direction, but in this embodiment, the center beam 14 divides the corbel beam 15 in the y direction. The frame 10 is configured. The middle beam 14 corresponds to the one in which the front middle beam 14a and the rear middle beam 14b of the above embodiment are integrated.

A front opening 19a is provided on the side surface of the middle beam 14 located in front of the pillow beam 15 in the x direction, and a rear opening 19b is provided on the side surface of the middle beam 14 located behind the middle beam 14 in the x direction. The floor plate 11 adjacent to the front opening 19a and the rear opening 19b has a front floor plate notch 17a and a rear floor plate notch 17b.

The underfloor wiring 50 extends in the x direction of the underframe 10 from the center of the vehicle under the floor toward the end of the vehicle. A part of the underfloor wiring 50 passes through the rear floor plate notch 17b, the through hole 16, and the front floor plate notch 17a to the end of the vehicle, and another part is the rear floor plate notch 17b, the rear opening 19b, and hollow. It passes through the inside of a certain middle beam 14, the front opening 19a, and the front floor plate notch 17a to the end of the vehicle.

According to the above configuration, a large height of the through hole 16 can be secured as in the above-described embodiment as compared with the conventional structure in which the through hole 16 is provided between the lower surface of the floor plate 11 and the lower surface of the pillow beam 15. Therefore, the underfloor wiring 50 in which the underfloor wiring and the connector are previously connected by an outwork or the like can be passed through the through hole 16. That is, since it is not necessary for the operator to connect the connectors upward when the railway vehicle structure 1 is completed, the burden on the operator, the manufacturing cost of the railway vehicle, and the manufacturing lead time can be reduced.

Further, since the front floor plate notch 17a and the rear floor plate notch 17b have a plurality of residual ribs 18 having predetermined rigidity and strength, the structural strength characteristics required for various loads acting on the railway vehicle structure 1 are present. Can be secured.

In addition, since the underfloor wiring 50 can be passed through the inside of the middle beam 14 in addition to the through hole 16, it is possible to cope with the case where the number of underfloor wiring 50 is relatively large compared to the number of through holes 16.

In the present embodiment, the structural strength characteristics of the railway vehicle structure 1 are ensured by forming the front floor plate notch 17a and the rear floor plate notch 17b with the upper surface plate of the floor plate 11 and the remaining ribs 18, but these are deleted. Alternatively, in addition to these, other strength members may be joined to form the structure.

(Manufacturing method of rail vehicle structure)
Hereinafter, the method of manufacturing the rail vehicle structure according to the present invention will be described with reference to the drawings, taking a railroad vehicle structure as an example.
FIG. 7 is a flowchart showing a method of manufacturing a railway vehicle structure in one embodiment of the present invention (when the number of wirings 50 is larger than a threshold value), and FIG. 8 is a flowchart showing another embodiment of the present invention (when the number of wirings 50 is a threshold value). It is a flowchart which shows the manufacturing method of the railroad vehicle structure in the following case).

Step S10 includes a step of cutting out the lower surface plate and the rib of the floor plate 11, and a step of providing a through hole 16 in the pillow beam 15 corresponding to a position adjacent to the cut-out lower surface plate and the rib. In step S20, the side beam 12 and the end beam 13 are prepared, and in step S30, the floor plate 11 having the notch (front floor plate notch 17a, rear floor plate notch 17b) is prepared.

In step S40, the number of pipes and wirings 50 intersecting the pillow beam 15 is determined. Here, if it is determined that the number of wires 50 is greater than the threshold value, the process proceeds to step S50, while if it is determined that the number of wires 50 is equal to or less than the threshold value, the process proceeds to another process D.

In step S50, the pillow beam 15 which is divided and has the through hole 16 formed is prepared, and the middle beam 14 which has the openings (front opening 19a, rear opening 19b) formed in the previous step is prepared.

In step S60, the underframe 10 is assembled from the prepared side beams 12, end beams 13, pillow beams 15, and middle beams 14.

In step S70, the hexahedral railroad vehicle structure 1 is assembled from the assembled underframe 10, the side structure 20, the wife structure 40, and the roof structure 30.

In step S80, the work is completed in step S90 through the wiring 50 provided with the connector from the opening 19 of the middle beam 14 to the inside thereof and through the through hole 16 of the pillow beam 15.

By the method of manufacturing the railroad vehicle structure including the above-mentioned steps (particularly, steps S40 and S80), the wiring 50 including the connector can be provided in the railroad vehicle structure 1 with a short manufacturing lead time, so that the manufacturing cost of the railroad vehicle can be increased. It is possible to provide a railroad vehicle structure that can reduce the manufacturing lead time.

On the other hand, when the number of wires 50 is determined to be equal to or less than the threshold value in step S40 and the process proceeds to another process D, as shown in FIG. 8, a through hole 16 is formed in step S55 and one side thereof is formed. An integral pillow beam 15 that joins the beam 12 to the other side beam 12 and a front middle beam 14a and a rear middle beam 14b are prepared.

In step S65, the underframe 10 is assembled from the prepared side beam 12, end beam 13, pillow beam 15, front middle beam 14a, and rear middle beam 14b.

In step S75 (same as S70), the hexahedral railroad vehicle structure 1 is assembled from the assembled underframe 10, side structure 20, wife structure 40, and roof structure 30.

In step S85, the wiring 50 provided with the connector is passed through the through hole 16 of the pillow beam 15, and the work is completed in S90.

By the method of manufacturing the railroad vehicle structure including the above-mentioned steps (particularly, steps S40 and S85), the wiring 50 including the connector can be provided in the railroad vehicle structure 1 with a short manufacturing lead time, so that the manufacturing cost of the railroad vehicle can be increased. It is possible to provide a railroad vehicle structure that can reduce the manufacturing lead time.

The present invention is not limited to the above-described embodiment, and includes various modifications other than the above. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

1 ... Railway vehicle structure, 10 ... Underframe,
11 ... Floor board, 12 ... Side beam,
13 ... end beam, 14 ... middle beam,
14a ... front middle beam, 14b ... rear middle beam,
15 ... Pillow beam, 16 ... Through hole,
17a ... Front floor board notch, 17b ... Rear floor board notch,
18 ... Remaining ribs,
19a ... front opening, 19b ... rear opening,
20 ... side structure, 21 ... window,
22 ... Doorway, 30 ... Roof structure,
40 ... wife structure, 41 ... gangway,
50 ... Underfloor wiring, x ... Longitudinal direction,
y ... width direction, z ... up and down direction,
S10 ... Pillow beam insertion part floor plate opening step,
S20 ... Middle beam insertion part floor plate opening step,
S30 ... Pillow beam front and rear floor board face plate / rib notch step,
S40 ... Step of installing a through hole in the pillow beam,
S50 ... Corbel beam front and rear middle beam opening step,
S60 ... Underframe assembly step,
S70 ... Wiring step in the corbel beam,
S80 ... Wiring step in the middle beam

Claims (7)

It has a roof structure that constitutes the upper surface, a side structure that constitutes the side surface, an underframe that constitutes the lower surface, and a wife structure that constitutes the end face, and the floor plate of the underframe is formed on the upper surface plate and the upper surface plate. In a rail vehicle structure composed of a hollow profile composed of an opposing lower surface plate and a plurality of ribs connecting the upper surface plate and the lower surface plate.
The corbel beam is attached to the floor plate along the width direction of the underframe, the upper surface of the corbel beam is located substantially on the same plane as the upper surface plate of the floor plate, and the lower surface of the corbel beam is the floor plate. It is located below the bottom plate of
The pillow beam is provided with a through hole extending in the longitudinal direction of the underframe.
A rail vehicle structure characterized in that the floor plate has a notch portion formed by cutting out a rib and a lower surface plate of the floor plate in a manner continuous with the through hole. In the rail vehicle structure according to claim 1,
The middle beam along the longitudinal direction of the underframe extends in a manner that divides the pillow beam, the upper surface of the middle beam is located substantially on the same plane as the upper surface of the pillow beam, and the lower surface of the middle beam is It is located on substantially the same plane as the lower surface of the corbel beam.
A rail vehicle structure characterized in that an opening cut out from a side surface of the middle beam is provided in the vicinity of the corbel beam. In the rail vehicle structure according to claim 2.
A rail vehicle structure characterized in that a wiring extending in the longitudinal direction of the underframe passes through the inside of the middle beam from the opening. In the rail vehicle structure according to any one of claims 1 to 3.
A rail vehicle structure characterized in that the wiring extending in the longitudinal direction of the underframe passes through the through hole. In the rail vehicle structure according to any one of claims 1 to 4.
A rail vehicle structure characterized in that the notch is formed by an upper surface plate of the floor plate and a part of ribs. In the method for manufacturing a rail vehicle structure according to any one of claims 1 to 5.
At the position where the pillow beam is attached, a step of cutting out one face plate and a rib of the floor plate, and
A step of providing a through hole in the pillow beam at a position corresponding to the notched face plate and the rib, and
A method for manufacturing a rail vehicle structure, which comprises a step of performing wiring through a through hole of the corbel beam in a state where the floor plate and the corbel beam are combined. In the method for manufacturing a rail vehicle structure according to claim 6.
A step of providing an opening in the middle beam that divides the corbel beam, and
A method for manufacturing a rail vehicle structure, which comprises a step of performing wiring from the opening through the inside of the middle beam in a state where the floor plate and the corbel beam are combined.

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