JP2007062440A - Body structure for railway vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body structure for a railway vehicle capable of enhancing strength relative to load applied to a side vehicle body from a vehicle body side surface direction. <P>SOLUTION: In the body structure for the railway vehicle formed by joining a base frame having a side beam and a lateral beam; the side vehicle body having a side outer plate and a side pillar; a roof vehicle body having a roof outer plate, a cant rail and a rafter; and an end vehicle body having an end outer plate, reinforcement skeleton parts 51 in which the lateral beam 21 of the base frame, side pillars 31, 31 of the side vehicle body and the rafter 41 of the roof vehicle body are arranged in the same cross section are arranged at a plurality of positions in a vehicle body longitudinal direction with a predetermined gap. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle body structure of a railway vehicle, and more particularly to a vehicle body structure of a railway vehicle manufactured by combining a prefabricated underframe, side structure, roof structure, and wife structure.

  As shown in the explanatory diagram of FIG. 3, a general railway vehicle has a frame 11, a pair of left and right side structures 12, 12, a roof structure 13, and a pair of front and rear wife structures. (Not shown) are manufactured in a shell structure composed of hexahedrons joined to each other, and a partition for partitioning a crew room, an entrance / exit, etc. is provided as necessary.

  The frame 11 is provided with a plurality of lateral beams 11c between the side beams 11a on both the left and right sides and the end beams 11b at both ends of the vehicle, and a pillow beam 11d and a middle beam 11e are provided corresponding to the vehicle and the coupler. It has been. The side structure 12 is provided with a plurality of side columns 12d on a side outer plate 12c in which openings such as a doorway 12a and a window opening 12b are formed, as well as horizontal beams 12e and bands 12f, and vertical columns. 12g is provided. In addition, the roof structure 13 is obtained by joining a roof outer plate 13c to a plurality of rafters 13b spanned between the long girders 13a on both the left and right sides, and corresponds to the position where the ventilator or the cooling device is attached. An opening 13d is provided.

  When assembling the vehicle body, floor materials are attached to the upper surface of the underframe 11, interior materials and seats are attached to the inner surface of the side structure 12, and ceiling materials are attached to the lower surface of the roof structure 13, respectively. Etc., and a current collector and a cooling device are attached to the roof structure 13.

The force applied to the body of such a railway vehicle includes the weight of the body itself, the weight of various equipment, the load in the vertical direction such as the passenger weight, the load in the left and right direction such as when passing through a curve, the tensile force and compression during knitting running There is a force and a load in the front-rear direction such as at the time of collision, and with respect to each of these loads, the design is such that sufficient strength is maintained by the shell structure at the time of completion of the vehicle body. Furthermore, with respect to an excessive load in the front-rear direction, measures are taken such as providing an interference member or a shock absorbing member at the vehicle end, or providing an inclined rib at the corner column (for example, Patent Documents 1 and 2). , 3).
JP-A-11-192941 JP 2001-48016 A JP 2003-276596 A

  In conventional vehicle body design, the load in the left-right direction is mainly assumed to be a force that twists the vehicle body when passing through a curve. There was nothing wrong. However, in recent years, it has been required to improve the strength against the load from the side of the vehicle body so as to cope with a railroad crossing accident and a derailment collision accident.

  Accordingly, an object of the present invention is to provide a vehicle body structure for a railway vehicle that can improve strength against a load acting on a side structure from the side surface direction of the vehicle body.

  In order to achieve the above object, a vehicle body structure of a railway vehicle according to the present invention includes a frame having side beams and lateral beams, a side structure having side skins and side columns, a roof having roof roofs, long girders, and rafters. In a vehicle body structure of a railway vehicle formed by joining a structure and a wife structure having a wife outer plate, the transverse beam of the underframe, the side column of the side structure, and the rafter of the roof structure are arranged in the same cross section. Reinforcing frame parts are arranged at predetermined intervals at a plurality of locations in the longitudinal direction of the vehicle body.

  Furthermore, in the vehicle body structure of the railway vehicle of the present invention, a plurality of the reinforcing frame portions are provided in a range of 2 m in at least a part of the longitudinal direction of the vehicle body, and between side columns of adjacent reinforcing frame portions. A horizontal plate was provided, and a reinforcing plate was provided in a rectangular portion formed by a pair of side columns of adjacent reinforcing frame portions, the side beams positioned above and below the side columns, and the long girders. It is characterized by that.

  According to the vehicle body structure of the railway vehicle of the present invention, the load acting from the side of the vehicle body can be directly transmitted from the side column of the side structure to the cross beam of the frame and the rafter of the roof structure. Since it is possible to reduce the transmission of the load through the stress in the torsional direction applied to the beams and the long girders of the roof structure, the vehicle body strength can be significantly improved.

  FIG. 1 is an explanatory view showing an example of a vehicle body structure of a railway vehicle according to the present invention. In this embodiment, a plurality of cross beams 11c, a plurality of side pillars 12d, and a plurality of rafters 13b respectively provided on the frame 11, the pair of left and right side structures 12, 12 and the roof structure 13 shown in FIG. In some cases, as shown in FIG. 1, the cross beam 21, the side columns 31, 31 and the rafter 41 are arranged in the same cross section, and the lower ends of the side columns 31, 31 on both sides are joined to both ends of the cross beam 21. The reinforcing frame portions 51 are formed by joining both ends of the rafter 41 directly to the upper ends of the side pillars 31 on both sides, and the reinforcing frame portions 51 are arranged at a plurality of locations in the longitudinal direction of the vehicle body.

  For example, as shown in the left part of FIG. 3, in the conventional vehicle body structure, the cross beam 11c, the side post 12d, and the rafter 13b are rarely arranged in the same cross section, that is, on the straight lines L1, L2, and L3. In a carcass of a shell structure in which a frame 11, a pair of left and right side structures 12, 12, a roof structure 13, and a pair of front and rear end structures (not shown) are combined separately, a side beam 11a, a side column 12d, and a rafter No design was made to join 13b directly.

  Therefore, since the conventional side column 12d is joined to the cross beam 11c and the rafter 13b via the side beam 11a and the long beam 13a, the load applied to the side structure 12 from the side surface direction of the vehicle body is It is transmitted from the column 12d to the cross beam 11c and the rafter 13b via the side beam 11a and the long beam 13a, and acts on the side beam 11a and the long beam 13a provided in the longitudinal direction of the vehicle body as stress in the torsional direction. . As described above, the side beams 11a and the long girders 13a are designed so as to obtain a predetermined strength as a whole when the vehicle body has a tension shell structure, and thus have sufficient strength in a normal state. However, when a large load that cannot normally be considered is applied from the side of the vehicle body, the side beams 11a and the long girders 13a are greatly deformed by a large local torsional stress. It was obvious that the rafter 13b also acts as torsional stress, and the entire vehicle body was deformed.

  On the other hand, as shown in the right part of FIG. 3, in the reinforcing frame portion 51 in which the cross beam 21, the side columns 31, 31 and the rafter 41 are arranged in the same cross section, that is, on the straight lines L4, L5, L6, L7, Since the load applied to the side column 31 from the direction is directly transmitted from both ends of the side column 31 to the cross beam 21 and the rafter 41, the stress in the torsional direction hardly acts on the side beam 11a and the long beam 13a, and the side beam 11a. Further, deformation of the long girder 13a can be suppressed. Further, since the deformation of the side beams 11a and the long girders 13a can be suppressed, the torsional stress acting on the other cross beams 11c and the rafters 13b is also reduced, and the overall deformation amount is reduced, thereby suppressing the deformation of the entire vehicle body. Can do.

  In particular, as shown in FIG. 1, two reinforcing frame parts 51 and upper and lower sides are provided by adjoining or bringing the reinforcing frame parts 51 in which the cross beams 21, the side columns 31 and 31 and the rafters 41 are arranged in the same cross section. The beam 11a and the long girder 13a can be integrated into a three-dimensional structure, and the strength against a load applied to the side structure 12 from the side surface of the vehicle body can be improved. Furthermore, the strength can be further improved by providing the plurality of reinforcing frame portions 51 within a range of 2 m in at least a part of the longitudinal direction of the vehicle body. In addition, even if there is a portion that is not disposed on the straight line L8 between the two adjacently disposed reinforcing frame portions 51 positioned on the straight lines L6 and L7 in FIG. If the interval is 2 m or less, a sufficient strength improvement effect can be obtained. Furthermore, the cross beam 21, the side column 31, and the rafter 41 are made to have a cross-sectional shape strengthened against bending and buckling, and appropriate reinforcement is applied to the side beams 11 a and the long girders 13 a between the reinforcing frame portions 51 that are adjacent or arranged close to each other. By adding a member, the strength against the load from the side surface of the vehicle body can be further improved.

  Further, as shown in the explanatory diagram of FIG. 2, a pair of side columns 31, 31 of adjacent reinforcing frame portions 51, and side beams 11 a and long beams 13 a located above and below the side columns 31, 31 are formed. The strength of both reinforcing frame portions 51 can be further improved by providing the rectangular portion 52 with a reinforcing plate 53 that is thicker than the side outer plate 12c and is formed by mechanical cutting. .

  Further, the strength can be improved by providing a lateral bone between the pair of side columns 31 of the adjacent reinforcing frame portion 51. The horizontal bone can also be used as a member constituting a part of the seat or a member constituting a part of the cargo rack, or can be provided obliquely to form a brace.

  The position of the reinforcing frame portion 51 in the longitudinal direction of the vehicle body is arbitrary, and the number of installation frames is also arbitrary, but the vehicle body center portion is more than the vehicle end portion where the relatively strong pillow beams 11d and the middle beams 11e are provided. It is preferable to provide it with emphasis.

It is explanatory drawing which shows one example of the vehicle body structure of the railway vehicle of this invention. It is explanatory drawing which shows the other example of a vehicle body structure of the railway vehicle of this invention. It is explanatory drawing of each structure which comprises a vehicle body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Underframe, 11a ... Side beam, 11b ... End beam, 11c ... Cross beam, 11d ... Pillow beam, 11e ... Middle beam, 12 ... Side structure, 12a ... Opening for entrance / exit, 12b ... Opening for window, 12c ... Side Outer plate, 12d ... side column, 12e ... girder, 12f ... band, 12g ... intermediary column, 13 ... roof structure, 13a ... long girder, 13b ... rafter, 13c ... roof outer plate, 13d ... opening, 21 ... cross beam, 31 ... Side pillars, 41 ... rafters, 51 ... reinforcing frame part, 52 ... rectangular part, 53 ... reinforcing plate

Claims (4)

  It is formed by joining a frame having side beams and cross beams, a side structure having side skins and side pillars, a roof structure having roof skins, long girders and rafters, and a wife structure having wife skins. In the vehicle body structure of a railway vehicle, reinforcing frame portions in which cross beams of the underframe, side columns of the side structure and rafters of the roof structure are arranged in the same cross section are provided at predetermined intervals at a plurality of locations in the longitudinal direction of the vehicle body. A vehicle body structure of a railway vehicle characterized by being arranged.   2. The vehicle body structure for a railway vehicle according to claim 1, wherein a plurality of the reinforcing frame portions are provided in a range of 2 m in at least a part of the vehicle body longitudinal direction.   The vehicle body structure for a railway vehicle according to claim 1 or 2, wherein a lateral bone is provided between side columns of adjacent reinforcing frame portions.   The reinforcing plate is provided in a rectangular portion formed by a pair of side columns of adjacent reinforcing frame portions, and the side beams and the long beams positioned above and below the side columns. 3. The vehicle body structure of the railway vehicle according to any one of 3 above.

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