JP6653730B2 - Railcar - Google Patents

Description

  The present invention relates to a railway vehicle that reinforces a side structure or a side beam near a side entrance.

  The side structure joined to the side beam of the underframe is provided with a side entrance for getting on and off which is a large opening. As a result, when the rigidity of the side structure near the side entrance is reduced as compared with the other portions, the load applied to the side beam from the lower end of the entrance post constituting the edge of the side entrance increases. Further, the load applied from the upper end of the entrance post to a part of the side structure also increases.

  The part where the load is applied from the end of the entrance pillar is a double skin structure where the outer plate and the inner plate are connected by multiple webs, and the outer plate, the inner plate, and the web are made thinner for weight reduction. However, there is a possibility that a large load from the entrance pillar cannot be endured locally. Therefore, conventionally, a reinforcing member is joined to an outer surface plate of a side beam at a lower portion of a side entrance from the outside to reinforce the side beam, or a beam is provided inside a side structure so as to surround the side entrance and reinforce the side structure. It has been disclosed (Patent Document 1).

JP 2012-051495 A

  However, in the above-described conventional technique, since the reinforcing member is joined to a part of the side beam from the outside, the side beam to which the entrance pillar is joined can be reinforced, while a part of the side beam projects outward to improve the appearance. There is a problem of spoiling. Further, when a beam is provided inside the side structure so as to surround the side entrance, there is a problem that the cabin space is narrowed.

  The present invention has been made in order to solve the above-described problems, and provides a railway vehicle capable of reinforcing a side beam or a side structure with which an end of an entrance pillar abuts without reducing the cabin space and without deteriorating the appearance. The purpose is to do.

To achieve this object, the railway vehicle of the present invention includes an underframe having a pair of side beams provided on both sides in the sleeper direction, and a pair of side structures respectively joined to the pair of the side beams, The side structure includes an entrance pillar that constitutes an edge in the rail direction of a side entrance and abuts on the side beam, and the side beam is an outer plate outside the vehicle body, and an inner plate that is disposed to face the outer plate. A main body portion having the same material and cross-sectional shape formed over the entire length in the rail direction by the web connecting the outer surface plate and the inner surface plate to each other, and a reinforcing member to which a lower end portion of the entrance pillar abuts. , to the main body portion, said body portion has removed portion partially removed, and the reinforcing member, Tei Rutotomoni bonded to the removal section, higher than the rigidity of the portion based on the shape of the removed portion It is rigid.

Further, the railway vehicle of the present invention includes a pair of side structures provided on both sides of the underframe in the sleeper direction, the side structures are an outer surface plate outside the vehicle body, and an inner surface plate disposed to face the outer surface plate, A main body having the same material and cross-sectional shape formed over the entire length in the rail direction by the web connecting the outer surface plate and the inner surface plate to each other; and a rail-direction edge of a side entrance formed through the main body. an inlet column constituting the, and a reinforcing member the upper end of the inlet column abuts, to the main body portion, a portion of the body portion may remove part that has been removed, the reinforcing member, the removal parts bonded to Tei Rutotomoni a higher rigidity than the rigidity of the portion based on the shape of the removed portion.

According to the railway vehicle according to claim 1, there removing unit portion of the body portion of the side beams have been removed within the main body portion, Ru Tei reinforcing member is joined to its removal unit. Then, the lower end portion of the entrance column that forms the rail-direction edge of the side entrance / exit abuts on the reinforcing member having a higher rigidity than a part of the rigidity based on the shape of the removal portion . Thereby, the load-bearing capacity of the side beam receiving the entrance pillar can be increased by the reinforcing member, and the reinforcing member joined to the removed portion can be prevented from protruding from the outer surface plate or the inner surface plate. Furthermore, since the side beams that do not face the cabin space are reinforced by the reinforcing member, the cabin space can be prevented from being narrowed by the reinforcing member. As a result, the side members contacting the lower end of the entrance pillar can be reinforced by the reinforcing member without reducing the cabin space or impairing the appearance by the reinforcing member.

According to the railway vehicle according to claim 2, there removing unit portion of the body portion of the side structure has been removed within the main body portion, Ru Tei reinforcing member is joined to its removal unit. Then, the upper end portion of the entrance pillar that forms the rail-direction edge of the side entrance / exit abuts on the reinforcing member having a higher rigidity than a part of the rigidity based on the shape of the removal portion . Thus, the withstand load of the side structure receiving the load from the entrance pillar can be increased by the reinforcing member, and the reinforcing member joined to the removed portion can be prevented from protruding from the outer plate or the inner plate. As a result, the side structure with which the upper end of the entrance pillar abuts can be reinforced by the reinforcing member without reducing the cabin space or impairing the appearance by the reinforcing member.

  According to the third aspect of the present invention, the end of the reinforcing member, which is on the opposite side to the end with which the entrance post abuts, is joined to the connection point between the outer plate or the inner plate and the web. Thereby, the load applied to the reinforcing member from the inlet column can be received at the connection point having higher rigidity than the outer surface plate, the inner surface plate, and the web alone. As a result, in addition to the effects of the first or second aspect, the withstand load of the side beam or the side structure with which the end of the entrance pillar abuts can be increased by the reinforcing member.

  According to the railway vehicle of the fourth aspect, in the cross section perpendicular to the rail direction, the reinforcing member has one side abutting on the end of the entrance pillar, a part joined to the connection point, and the direction of the sleeper on that part and one side. The sides surrounded by the edges on both sides of each are solid, and the portion surrounded by is solid. Thereby, the second moment of area of the reinforcing member can be secured, and in addition to the effect of the third aspect, the withstand load of the side beam or the side structure with which the end of the entrance pillar abuts can be further increased by the reinforcing member.

  According to the fifth aspect of the present invention, since the window opening through which the plurality of windows are continuously attached in the rail direction penetrates the side structure, the rigidity of the side structure is reduced, and the side beams and the side beams are reduced from the end of the entrance pillar. The load applied to the side structure increases. However, by providing the reinforcing member, it is possible to withstand a large load from the entrance pillar to the side beam or the side structure. Therefore, in addition to the effect of any one of the first to fourth aspects, even if a window opening for continuously attaching a plurality of windows is provided, the withstand load of the side beams and the side structure can be secured by the reinforcing member.

It is a side view of the railcar in one Embodiment. FIG. 2 is a sectional end view of the railway vehicle taken along line II-II in FIG. 1. FIG. 3 is a partially enlarged view of a railway vehicle, showing a part III in FIG. 1 in an enlarged manner. FIG. 4 is a sectional end view of the railway vehicle taken along line IV-IV in FIG. 3. (A) And (b) is explanatory drawing which shows the manufacturing process of a side beam.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, a railway vehicle 1 according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view of the railway vehicle 1. FIG. 2 is a sectional end view of the railway vehicle 1 along the line II-II in FIG. In addition, the arrow U direction in each drawing is the upward direction of the railway vehicle 1, similarly, the arrow D direction is the downward direction of the railway vehicle 1, and the arrow LL direction is the rail direction of the railway vehicle 1 (body length direction). , The arrow WW direction is the sleeper direction of the railway vehicle 1 (body width direction).

  As shown in FIGS. 1 and 2, the railway vehicle 1 is provided with an underframe 2, a wife structure 4 disposed on each side of the underframe 2 in the rail direction, and an underside of the underframe 2 on the sleeper, respectively. The vehicle includes a side structure 5 and a roof structure 6 spanned over the wife structure 4 and the side structure 5. The underframe 2, the wife structure 4, the side structure 5, and the roof structure 6 are joined to each other by welding such as MIG welding or laser welding, or solid-phase joining such as friction stir welding, and have a box-like shape having a cabin space inside. Is constructed. Hereinafter, the term “joining” in the present embodiment refers to welding or solid-phase joining unless otherwise specified.

  The underframe 2 includes a pair of side beams 10 provided on both side edges in the sleeper direction and extending in the rail direction, and a floor plate member 11 bridged over an upper portion of the pair of side beams 10 and constituting a lower floor portion. Prepare. The side structure 5 is joined to the side beam 10 over the entire length in the rail direction.

  The side beams 10 and the floor plate member 11 are mainly formed of an aluminum alloy having a double skin structure having substantially the same cross-sectional shape over the entire length in the rail direction. Specifically, the side beam 10 includes an outer plate 12 facing the outside of the vehicle body, an inner plate 13 arranged to face the outer plate 12, and a plurality of webs 14 connecting the outer plate 12 and the inner plate 13 to each other. . A hollow extruded profile composed of the outer plate 12, the inner plate 13, and the web 14 constitutes a main body 10a having the same material and the same cross-sectional shape over the entire length in the rail direction.

  Similarly, the floor panel member 11 includes an outer panel 15 forming a lower surface, an inner panel 16 arranged opposite to the outer panel 15 to form an upper surface, and a plurality of webs 17 connecting the outer panel 15 and the inner panel 16 to each other. Is provided. The inner plate 13 of the side beam 10 and the outer plate 15 of the floor plate member 11 are connected to each other, and the uppermost web 14 of the side beam 10 and the inner plate 16 of the floor plate member 11 are connected to each other.

  Similarly, the side structure 5 is also mainly formed of an aluminum alloy having a double-skin structure having substantially the same cross-sectional shape over the entire length in the rail direction. Specifically, the side structure 5 includes an outer plate 18 facing the outside of the vehicle body, an inner plate 19 arranged to face the outer plate 18, and a plurality of webs 20 connecting the outer plate 18 and the inner plate 19 to each other. . The hollow extruded profile composed of the outer plate 18, the inner plate 19, and the web 20 constitutes a main body 5 a having the same material and the same cross-sectional shape over the entire length in the rail direction.

  A side entrance 26 to which a door 23 for getting on and off is attached and a window opening 28 to which a plurality of windows 27 are attached are formed through the main body 5 a of the side structure 5. The side entrance 26 is an entrance for passengers. A door 23 as a sliding door is attached to the side entrance 26.

  The plurality of windows 27 are provided continuously in the rail direction. Therefore, the window opening 28 is a long opening in the rail direction. The rigidity of the side structure 5 is reduced due to the long window opening 28 in the rail direction.

  Therefore, by attaching a plurality of reinforcing blower pillars 29 to the inner surface plate 19 of the side structure 5 so as to connect the upper and lower portions of the window opening 28 from the cabin side of the window 27, the rigidity of the side structure 5 particularly near the window opening 28 is improved. Is secured. Thereby, it is possible to achieve both the design property by the plurality of windows 27 that are continuous in the rail direction and the securing of the rigidity of the side structure 5 by the blowing columns 29.

  Next, the periphery of the side entrance 26 will be described in detail with reference to FIGS. FIG. 3 is a partially enlarged view of the railway vehicle 1 showing an enlarged part III of FIG. FIG. 4 is a sectional end view of the railway vehicle 1 along the line IV-IV in FIG. In FIG. 4, only one side of the pair of side structures 5 is shown. In FIG. 4, a part of the entrance post 34 is omitted from the illustration.

  As shown in FIGS. 3 and 4, the side structure 5 includes an entrance frame 33 that forms a peripheral edge of the side entrance 26. The entrance / exit frame 33 is a square frame made of an aluminum alloy. The entrance / exit frame 33 constitutes a pair of entrance columns 34 and 35 which constitute the edge of the side entrance 26 in the rail direction, the duck gate 36 which constitutes the upper edge of the side entrance 26, and the lower edge of the side entrance / exit. A threshold part 37 is provided, and each part is integrated by joining. An entrance post 35 is disposed on the window opening 28 side.

  The inner edges of the corners of the entrance pillars 34, 35 and the gate section 36 and the threshold section 37 are curved. In the present embodiment, the corners whose inner edges are curved are also part of the entrance columns 34, 35, and the boundary A between the entrance columns 34, 35 and the gate section 36 or the threshold section 37 is shown by a broken line in FIG. In addition, the inner edges of the corners of the entrance pillars 34 and 35 and the gate section 36 and the threshold section 37 may be bent. In this case, the boundary A is set along the side edges of the entrance columns 34 and 35.

  The entrance frame 33 and the side entrance 26 are formed in the side structure 5 by joining the entrance pillars 34 and 35 and the gate part 36 of the entrance frame 33 to the main body 5 a of the side structure 5. When the side structure 5 is joined to the side beam 10, the lower ends of the entrance columns 34 and 35 and the lower end of the sill 37 are also joined to the side beam 10 (main body 10a). In addition, the joining of the entrance frame 33 to the main body portion 5a and the side beam 10 of the side structure 5 is not limited to welding or solid-phase joining, but may be mechanical joining using bolts or rivets.

  In this manner, the side structure 5 is provided with the entrance / exit side entrance / exit 26 having a large opening, so that the rigidity of the side structure 5 near the side entrance / exit 26 is reduced as compared with other portions. Then, the load applied to the side beams 10 from the lower ends of the entrance columns 34 and 35 increases. Further, the load applied from the upper end portions of the entrance columns 34 and 35 to a part of the side structure 5 also increases. When the outer plates 12, 18 and the inner plates 13, 19 and the webs 14, 20 are made thinner in order to reduce the weight or cost of the side beams 10 and the side structure 5 having the double skin structure, the ends of the entrance columns 34, 35 are reduced. There is a possibility that the side beam 10 or the side structure 5 cannot withstand a locally large load from the part.

  However, in this embodiment, the side beams 10 are provided with the reinforcing members 41 for increasing the load resistance of the side beams 10 by the lower ends of the entrance columns 34 and 35 abutting. In addition, the side structure 5 includes a reinforcing member 51 for increasing the load resistance of the side structure 5 with the upper ends of the entrance columns 34 and 35 abutting. Here, a method for manufacturing the side beam 10 having the reinforcing member 41 will be described with reference to FIGS. FIG. 5A and FIG. 5B are explanatory diagrams illustrating a manufacturing process of the side beam 10.

  First, as described above, the outer plate 12, the inner plate 13, and the web 14 made of aluminum alloy form the main body 10a having the same material and the same cross-sectional shape over the entire length in the rail direction. Next, as shown in FIG. 5A, a portion 10b of the main body 10a at a position where the entrance columns 34 and 35 are joined is removed, and a removing section 40 is provided on the side beam 10 (main body 10a). Specifically, in the main body 10a at the position where the inlet columns 34 and 35 are joined, the uppermost web 14 is located above the outer plate 12 side and above the connection point 42 between the second uppermost web 14 and the outer plate 12. The outer plate 12 is removed, and a removing unit 40 is provided.

  Next, a reinforcing member 41 having a shape conforming to the removing portion 40 is prepared, and as shown in FIG. 5B, the reinforcing member 41 is arranged in the removing portion 40 such that the reinforcing member 41 is fitted into the removing portion 40. . Then, the reinforcing member 41 is joined to the removing portion 40 (the main body 10a) by the joining tool 43. Specifically, the lower end of the reinforcing member 41 is joined to the connection point 42, and the upper end of the reinforcing member 41 is joined to the uppermost web 14 on the side of the floor plate member 11. In addition, an end of the reinforcing member 41 in the rail direction is joined to the main body 10a (the outer plate 12 and the web 14) adjacent in the rail direction.

  Returning to FIG. 3 and FIG. As described above, the removal part 40 from which a part 10b (see FIG. 5A) of the body part 10a is removed is formed in the body part 10a, and the reinforcing member 41 is joined to the removal part 40. The reinforcing member 41 has higher rigidity and higher strength than the removed portion 10b. Since the cross-sectional shape of the main body 10a is the same over the entire length in the rail direction, the shape of the removed portion 10b can be accurately grasped by looking at the shape of the removing portion 40. Further, since the material of the main body 10a is the same over the entire length in the rail direction, the material of the removed portion 10b can be grasped. As a result, the stiffness (Young's modulus) of the removed portion 10b can be calculated.

  As described above, the load resistance of the side beam 10 to which the lower ends of the entrance columns 34 and 35 are joined can be increased by the reinforcing member 41 having higher rigidity than the removed portion 10b. 10 can withstand the concentration of the load. Furthermore, since the reinforcing member 41 is joined to the removal portion 40 from which the portion 10b of the main body 10a has been removed, it is possible to prevent the reinforcing member 41 from projecting from the outer plate 12 or the inner plate 13. In addition, since the side beams 10 not facing the cabin space are reinforced by the reinforcing member 41, the cabin space can be prevented from being narrowed by the reinforcing member 41. As a result, the side beams 10 to which the entrance columns 34 and 35 are joined can be reinforced by the reinforcing members 41 without narrowing the cabin space or impairing the appearance of the side beams 10.

  Further, the side structure 5 having the reinforcing member 51 is manufactured in the same manner as the method of manufacturing the side beam 10 having the reinforcing member 41. More specifically, a removal portion 50 in which a part 5b of the main body 5a of the side structure 5 is removed is formed in the main body 5a, and the reinforcing member 51 is joined to the removed portion 50.

  The reinforcing member 51 has higher rigidity and higher strength than the removed portion 5b. Since the cross-sectional shape of the main body 5a is the same over the entire length in the rail direction, the shape of the removed portion 5b can be accurately grasped by looking at the shape of the removing portion 50. Further, since the material of the main body 5a is the same over the entire length in the rail direction, the material of the removed portion 5b can be grasped. As a result, the rigidity (Young's modulus) of the removed portion 5b can be calculated.

  As described above, the load resistance of the side structure 5 to which the upper ends of the entrance columns 34 and 35 are joined can be increased by the reinforcing member 51 having a higher rigidity than the removed portion 5b. 5 can withstand the concentration of the load. Further, since the reinforcing member 51 is joined to the removing portion 50 from which the part 5b of the main body 5a has been removed, the reinforcing member 51 can be prevented from protruding from the outer plate 18 or the inner plate 19. As a result, the side structure 5 to which the entrance columns 34 and 35 are joined can be reinforced by the reinforcing member 51 without reducing the cabin space or impairing the appearance of the side structure 5.

  In particular, since the window opening 28 through which the plurality of windows 27 are continuously attached in the rail direction is formed through the side structure 5, the rigidity of the side structure 5 is further reduced, and the upper and lower ends of the entrance columns 34 and 35 are formed. The load applied to the side beam 10 and the side structure 5 from the portion is further increased. Further, since the side entrance 26 and the window opening 28 are formed through the body portion 5a having the double skin structure, the rigidity of the entire side structure 5 is easily reduced, and the side beams 10 and the side structure 10 5 tends to be large.

  However, by appropriately adjusting the rigidity of the reinforcing members 41 and 51, it is possible to withstand a large load on the side beams 10 and the side structures 5 from the ends of the entrance columns 34 and 35. Therefore, even if the window opening 28 to which the plurality of windows 27 are continuously attached is provided, or the side entrance 26 and the window opening 28 are provided in the main body 5a having the double skin structure, the ends of the entrance columns 34 and 35 are formed. The withstand load of the side beam 10 and the side structure 5 to be joined can be secured by the reinforcing members 41 and 51.

  The reinforcing members 41 and 51 are made of an aluminum alloy of substantially the same material as the main body portions 10a and 5a (parts 10b and 5b). By making the materials of the members to be joined substantially the same, the joining conditions and the like can be simplified as compared with the case where the materials of the members to be joined are different, and the joining operation can be facilitated.

  In the present embodiment, the aluminum alloy of the reinforcing members 41 and 51 has slightly different components from the aluminum alloy of the main bodies 10a and 5a, and has a higher strength than the aluminum alloy of the main bodies 10a and 5a. . Thus, compared to a case where an aluminum alloy having the same strength as the main body portions 10a, 5a is used for the reinforcing members 41, 51, the load resistance of the side beams 10 and the side structures 5 to which the ends of the entrance columns 34, 35 are joined is reduced. Can be larger.

  In the cross section perpendicular to the rail direction, the reinforcing member 41 has a side 44 at which the lower ends of the entrance columns 34 and 35 abut, a portion 45 joined to the connection point 42, and both sides of the portion 45 and the side 44 in the sleeper direction. A substantially triangular member whose portion surrounded by the sides 46 and 47 connecting the edges thereof is at least solid. The reinforcing member 51 is a quadrangular solid material in a cross section perpendicular to the rail direction. Specifically, in the cross section perpendicular to the rail direction, the reinforcing member 51 includes a side 53 at which the upper ends of the inlet columns 34 and 35 abut, a portion 54 joined to the connection point 52 of the web 20 and the inner surface plate 19, At least a portion surrounded by sides 55 and 56 connecting the edges on both sides in the sleeper direction of the portion 54 and one side 53 is at least solid. The sides 47 and 55 are dashed lines and are virtual lines shown in FIG.

  Thereby, the second moment of area of the reinforcing members 41, 51 can be made larger than the second moment of area of the removed portions 10b, 5b. Therefore, even if the material of the reinforcing members 41 and 51 is completely the same as the material of the main bodies 10a and 5a (parts 10b and 5b), the reinforcing members 41 and 51 can have higher rigidity than the removed parts 10b and 5b.

  However, in this case, the reinforcing members 41 and 51 are heavier than the removed portions 10b and 5b. However, since the reinforcing members 41 and 51 are provided only at a part of the side beam 10 and the side structure 5 where the ends of the entrance columns 34 and 35 are joined, the main body portion is not provided without the reinforcing members 41 and 51. The side beams 10 and the side structure 5 can be reduced in weight as compared with the case where the cross-sectional area of 10a, 5a is increased over the entire length in the rail direction or the case where the reinforcing members 41, 51 are provided over the entire length in the rail direction.

  When the reinforcing members 41, 51 are made of a metal having higher rigidity than the main body portions 10a, 5a, the rigidity of the reinforcing members 41, 51 is further increased by increasing the second moment of area of the reinforcing members 41, 51. Can be higher. As a result, the withstand load of the side beams 10 and the side structures 5 to which the ends of the entrance columns 34 and 35 are joined can be further increased by the reinforcing members 41 and 51.

  Further, the lower end of the reinforcing member 41 is joined to the connection point 42. Further, a part of the upper end of the reinforcing member 51 is joined to a connection point 52 between the web 20 and the inner face plate 19. Thus, the loads applied from the inlet columns 34 and 35 can be received at the connection points 42 and 52 having higher rigidity than the outer plates 12 and 18, the inner plates 13 and 19 and the webs 14 and 20 alone. As a result, the withstand load of the side beams 10 and the side structures 5 to which the ends of the entrance columns 34 and 35 are joined can be increased by the reinforcing members 41 and 51.

  In the cross section perpendicular to the rail direction, the outer shape of the outside of the vehicle body of the railway vehicle 1 includes the reinforcing members 41 and 51 and the removed portions 10b and 5b (in the rail direction with respect to the portions 10b and 5b and the reinforcing members 41 and 51). The setting is the same in the adjacent main body parts 10a, 5a). Thereby, even if the reinforcing members 41 and 51 are arranged in the removing portions 40 and 50 from which the portions 10b and 5b have been removed, the external appearance of the side beams 10 and the side structure 5 is changed to the removing portions 40 and 50 and the reinforcing members 41 and 51. Can be almost the same as when there is no

  As shown in FIG. 3, the rail-direction dimensions of the reinforcing members 41 and 51 are set to be larger than the rail-direction dimensions of the ends of the entrance columns 34 and 35. Thereby, the load applied to the main bodies 10a, 5a from the entrance columns 34, 35 via the reinforcing members 41, 51 can be dispersed in a wide range. As a result, the load bearing capacity of the side beams 10 and the side structures 5 to which the ends of the entrance columns 34 and 35 are joined can be increased, and the rigidity of the side beams 10 and the side structures 5 can be sufficiently ensured.

  Furthermore, since the rail-direction dimension of the reinforcing member 41 is larger than the rail-direction dimension of the lower ends of the entrance columns 34 and 35, a part of the reinforcing member 41 can be joined to the main body 5 a of the side structure 5. Thus, the boundary in the rail direction between the reinforcing member 41 and the main body 10a can be shifted in the rail direction from the boundary in the rail direction between the main body 5a and the entrance columns 34 and 35. Further, since the rail-direction dimension of the reinforcing member 51 is larger than the rail-direction dimension of the upper ends of the entrance columns 34 and 35, the reinforcing member 51 and the entrance column 34 and 35 are positioned with respect to the rail-direction boundary between the main body 5a and the entrance columns 34 and 35. The boundary in the rail direction with the main body 5a can be shifted in the rail direction. As a result, it is possible to make it difficult to generate shear stress at the boundary between the main body 5a and the entrance columns 34 and 35 and at the boundary between the reinforcing members 41 and 51 and the main bodies 10a and 5a in the rail direction.

  As described above, the present invention has been described based on the above embodiments. However, the present invention is not limited to the above embodiments, and various modifications and improvements can be made without departing from the spirit of the present invention. It can be easily inferred. For example, the shape and size of each part of the underframe 2, the side structure 5, the side entrance 26, the window opening 28, the entrance frame 33, the reinforcing members 41 and 51, etc. may be appropriately changed. Alternatively, the threshold frame 37 may be omitted, and the entrance / exit frame 33 may be formed in a U-shape.

  Further, the reinforcing members 41 and 51 may be chamfered at the edges joined to the main body portions 10a and 5a. By this chamfering, when welding the reinforcing members 41 and 51 and the main body portions 10a and 5a, the penetration amount at the time of welding can be secured. As a result, the bonding strength between the reinforcing members 41, 51 and the main body portions 10a, 5a can be secured.

  In the above embodiment, the reinforcing member 41 abutting on the lower ends of the entrance columns 34 and 35 is provided on the side beam 10, and the reinforcing member 51 abutting on the upper ends of the entrance columns 34 and 35 is provided on the side structure 5. Although the case has been described, the present invention is not necessarily limited to this. Only the reinforcing member 41 may be provided without providing the reinforcing member 51, or only the reinforcing member 51 may be provided without providing the reinforcing member 41. When the reinforcing member 51 is not provided, the side structure 5 may have a single skin structure. When the reinforcing member 41 is not provided, the side beam 10 (underframe 2) may have a single skin structure.

  In the above-described embodiment, the railway vehicle 1 (intermediate vehicle) having no head structure has been described, but the present invention is not necessarily limited to this. The present invention may be applied to a railway vehicle 1 (leading vehicle) having a leading structure.

  In the above-described embodiment, the case where only one side entrance 26 for passengers is provided in the side structure 5 of the railway vehicle 1 has been described, but the invention is not necessarily limited to this. Side entrances 26 may be provided at a plurality of locations of the side structure 5. Also, one or more side entrances for crew may be provided in the side structure 5. Since the side entrance for the crew has a smaller dimension in the rail direction than the side entrance 26, the rigidity of the side structure 5 near the side entrance for the crew is higher than the rigidity of the side structure 5 near the side entrance 26. Therefore, by providing the reinforcing members 41 and 51 at the end of one of the two entrance columns of the entrance frame constituting the edge of the side entrance for the crew, the side structure 5 near the side entrance for the crew is provided. And the rigidity of the side beams 10 can be sufficiently ensured. Further, the rigidity of the side structure 5 and the side beams 10 may be further increased by bringing the reinforcing members 41 and 51 into contact with any of the two entrance columns of the entrance frame forming the edge of the side entrance for the crew.

  In addition, which of the two entrance pillars constituting the side edge of the side entrance for the crew member, which of the entrance pillars has the reinforcing members 41 and 51 at the end thereof depends on the structure around the two entrance pillars. You only have to decide. Further, depending on the rigidity near the side entrance 26 for the passenger, the reinforcing members 41, 51 may be provided only at one end of the two entrance columns 34, 35. For example, the leading structure is constituted by a single-skin structure having a lower rigidity than the side structure 5 having the double-skin structure, and in the vicinity of the side entrance located near the leading structure, the end of the entrance column on the leading structure side having the lower rigidity. It is preferable to provide the reinforcing members 41 and 51 on the base. Further, when the wife structure 4 is provided substantially vertically to the underframe 2, the rigidity of the side structure 5 near the wife structure 4 increases. Therefore, a side entrance is provided in the side structure 5 at a position where the rigidity is increased by the wife structure 4. In this case, it is preferable to provide the reinforcing members 41 and 51 at the end of the entrance pillar opposite to the end structure 4. As a result, the withstand load of the side beams 10 and the side structures 5 with which the ends of the entrance pillars abut can be sufficiently reinforced by the reinforcing members.

  In the above-described embodiment, the case has been described where the main body 10a (part 10b) and the reinforcing member 41 are made of substantially the same material, but the invention is not necessarily limited to this. The reinforcing member 41 may be made of a metal having higher rigidity than the material of the main body 10a. In this case, the reinforcing member 41 may be formed in the same shape as the removed portion 10b. Further, if the second moment of area of the reinforcing member 41 is increased and the rigidity of the reinforcing member 41 is higher than the rigidity of the removed portion 10b, the reinforcing member 41 is formed of a metal having a lower rigidity than the material of the main body 10a. You may.

  In the above-described embodiment, the case where the removal portion 40 is formed by removing the outer surface plate 12 of the side beam 10 and the portion 10b of the web 14 has been described, but the present invention is not necessarily limited to this. The removal portion 40 may be formed by removing not only the outer surface plate 12 and the web 14 but also a part of the inner surface plate 13, and the reinforcing member 41 having a substantially rectangular cross section perpendicular to the rail direction may be joined to the removal portion 40. Further, in this case, the lower end of the rectangular reinforcing member 41 may be joined not only to the connection point 42 between the outer plate 12 and the web 14 but also to the connection point between the inner plate 13 and the web 14.

  Further, depending on the shapes of the side beams 10 and the floor plate members 11 and the side structures 5, and the positional relationship between the entrance columns 34 and 35 and the side beams 10 and the side structures 5, a part of the webs 14 and 20 may be removed to remove portions 40 and 50. May be provided, or removal portions 40 and 50 may be provided by removing a part of the inner plates 13 and 19 and the webs 14 and 20. Further, by removing the inner plates 13, 19 and a part of the webs 14, 20 while leaving the outer plates 12, 18 as they are and providing the removal portions 40, 50, the appearance of the side beams 10 and the side structures 5 is not changed at all. Can be. When removing portions 40 and 50 are provided by removing portions of the inner plates 13 and 19 and the webs 14 and 20, the reinforcing members 41 and 51 are joined to the connection points between the inner plates 13 and 19 and the webs 14 and 20. May be.

  In the above-described embodiment, the case where the lower ends of the entrance columns 34 and 35 are joined to the reinforcing member 41 of the side beam 10 and the main body 10a has been described, but the present invention is not necessarily limited to this. If the side structure 5 having the entrance columns 34, 35 is joined to the side beams 10 at portions other than the entrance columns 34, 35, the entrance columns 34, 35 need not be joined to the reinforcing member 41 and the main body 10a. . In addition, since the entrance columns 34 and 35 are received by the reinforcing member 41 and the main body 10a, the entrance columns 34 and 35 need to be brought into contact with the reinforcement member 41 and the main body 10a. Similarly, the upper ends of the inlet columns 34 and 35 may not be joined to the reinforcing members 51 of the side structure 5, but the upper ends of the inlet columns 34 and 35 may be in contact with the reinforcing members 51.

  In the above-described embodiment, the case where the plurality of windows 27 are attached to the window opening 28 in a state of being continuous in the rail direction has been described, but the present invention is not necessarily limited to this. A plurality of windows 27 may be individually provided with window openings 28, and the plurality of windows 27 may be separated from each other.

  In the above-described embodiment, the case has been described where the reinforcing members 41 and 51 abutting on the ends of the entrance columns 34 and the reinforcing members 41 and 51 abutting on the ends of the entrance columns 35 are separated in the rail direction. However, the present invention is not necessarily limited to this. The reinforcing members 41 and the reinforcing members 51 separated from each other in the rail direction may be integrally formed, and the reinforcing members 41 and 51 may be provided over and under the side entrance 26.

DESCRIPTION OF SYMBOLS 1 Railway vehicle 2 Underframe 5 Side structure 5a, 10a Main part 5b, 10b Part 10 Side beam 12, 18 Outer plate 13, 19 Inner plate 14, 20 Web 26 Side entrance 27 Window 28 Window opening 34, 35 Entrance column 40, 50 Removal part 41, 51 Reinforcement member 42, 52 Connection point 44, 53 One side 45, 54 Part 46, 47, 55, 56 side

Claims (5)

Underframe having a pair of side beams provided on both sides in the sleeper direction,
A pair of side structures respectively joined to the pair of side beams,
The side structure includes an entrance pillar that constitutes a rail-direction edge of a side entrance and abuts on the side beam,
The side beams have an outer surface plate on the outside of the vehicle body, an inner surface plate arranged to face the outer surface plate, and a web and a web connecting the outer surface plate and the inner surface plate to each other. A body part formed identically,
A reinforcing member with which the lower end of the entrance pillar abuts,
Said body portion, a portion of the body portion may remove part that has been removed,
The reinforcing member Tei Rutotomoni joined to the removal portion, railway vehicle, which is a higher rigidity than the rigidity of the portion based on the shape of the removed portion. Equipped with a pair of side structures provided on both sides of the underframe in the sleeper direction,
The side structure has an outer surface plate outside the vehicle body, an inner surface plate disposed to face the outer surface plate, and a web and a web connecting the outer surface plate and the inner surface plate to each other. A body part formed identically,
An entrance column that constitutes a rail-direction edge of a side entrance formed through the main body portion,
A reinforcing member with which the upper end of the entrance pillar abuts,
Said body portion, a portion of the body portion may remove part that has been removed,
The reinforcing member Tei Rutotomoni joined to the removal portion, railway vehicle, which is a higher rigidity than the rigidity of the portion based on the shape of the removed portion.   2. The reinforcing member according to claim 1, wherein an end opposite to an end with which the entrance post abuts is connected to a connection point between the outer surface plate or the inner surface plate and the web. 3. 3. The railway vehicle according to 2.   In the cross section perpendicular to the rail direction, the reinforcing member has one side abutting on the end of the entrance pillar, a part joined to the connection point, and both ends of the part and the one side in the sleeper direction. The railway vehicle according to claim 3, wherein a part surrounded by each connected side is a solid.   The railcar according to any one of claims 1 to 4, wherein the side structure has a window opening through which a plurality of windows are continuously attached in a rail direction.

Images