JP4194444B2 - Railcar head structure - Google Patents

Description

  The present invention relates to a structure for a head portion of a railway vehicle in which the strength of the head portion of a vehicle in which a crew room is arranged is increased and safety at the time of a collision is improved.

For example, in a commuter vehicle type railway vehicle, in order to ensure the safety of the crew in the event of a collision, the end beam of the underframe that forms the top of the vehicle, the corner column and the through-column column that stand upright on the end beam, etc. The structure has been adopted in which the thickness of the frame and the thickness of the outer plate are increased to increase the strength and reduce deformation. In addition, a high-rigidity collision member is provided at the front end of the vehicle, and a high-rigidity horizontal beam is bridged between the vertical beams such as the side beam and the middle beam. Some have an impact absorbing member that gradually deforms in the front-rear direction to mitigate the impact (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2001-48016 (pages 1 to 3, FIGS. 1 to 6)

  However, with the former structure, there is a limit to improving the strength simply by increasing the plate thickness, and the underframe has a structure that is strong against loads in the front-rear direction. Since the road column or the like is welded at its lower end onto the frame, there is a risk that the frame and the frame will be separated at the time of collision. Furthermore, in the latter structure, since the impact absorbing member and the collision member protrude from the end surface of the vehicle body, the vehicle body becomes long, and the space in the front-rear direction of the vehicle body and the passenger space in the crew room are reduced.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a railcar top structure that enhances the strength of the vehicle head and prevents the frame and pillar members from being separated at the time of a collision, thereby improving safety.

In order to achieve the above-mentioned object, the present invention comprises a base frame with a floor plate stretched on the upper surface of a frame composed of end beams , left and right side beams, and horizontal beams coupled between the side beams, In a head structure of a railway vehicle in which a corner column and a penetrating column are erected on an end beam, a reinforcing plate extending from the end beam to the upper part of the transverse beam is laid on the floor plate on the lower surface of the penetrating column. A plate-shaped reinforcing member is disposed on the inner side of the lower column of the road column in the vertical direction, and a side edge extending in the vertical direction of the reinforcing member is formed on the lower vehicle inner side surface of the through road column, and from the lower vehicle inner side surface The lower edge extending to the top of the transverse beam is joined to the reinforcing plate . In addition, a reinforcing plate extending from the end beam to the upper part of the side beam is laid on the floor plate around the corner column, and the corner column is extended to the lower surface of the end beam to form an end beam. It is preferable that the side beams are bonded to the corner pillars, and a side panel is integrally formed on the corner pillars.

  According to the present invention, the reduction of the space for increasing the strength is reduced to increase the strength of the front portion of the vehicle, and the frame and corner columns and the frame and the through-passage column are prevented from being divided at the time of collision, thereby preventing collision safety. It is possible to make the head structure with high characteristics.

  Hereinafter, the present invention will be described based on an embodiment shown in the drawings. The head structure 1 has corner pillars 4, 4 erected on both ends of the end beam 3 of the underframe 2, and a front girder 5 is spanned between the upper portions of the corner pillars 4, 4, The through-pass pillars 7 and 7 are erected on the side of the passage 6 with an interval between the passages 6, and the upper part of the through-pass pillars 7 and 7 is joined to the front girder 5 to form a framework. The space between the pillars 4 and the through-pass pillars 7 is wider for the crew room.

  The underframe 2 includes the end beam 3, left and right side beams 8, 8, a horizontal beam 9 coupled between the side beams 8, 8, and intermediate beams 10, 10 coupled between the end beam 3 and the lateral beam 9. The floor plate 11 is stretched on the upper surface of the frame body.

  Each corner post 4 is integrally formed with a pillar part 4a and a side panel 4b by machining, and the pillar part 4a is formed to have a length extending the lower end to the lower surface of the end beam 3, After the lower part of the entire length of about 1/5 is inclined toward the front of the vehicle body, the remaining upper part of the length of about 4/5 is inclined toward the rear of the vehicle body. The side panel 4b is formed in such a size as to extend from the upper part of the side beam 8 to the roof structure 12 continuously to the column part 4a and to cover the upper bar 15 from the vehicle side column 14 of the passenger compartment entrance 13. Yes. Each corner column 4 is erected on the end beam 3 by joining the inner side surface in the vehicle body width direction at the lower part of the column part 4a to the end part of the end beam 3, and the side beam is formed on the inner side surface in the vehicle body front-rear direction in the lower part of the column part 4a. 8 are respectively joined. A reinforcing plate 16 extending from the end beam 3 to the upper part of the side beam 8 is laid on the floor plate 11 around each corner post 4, and the lower edge of the side panel 4 b is joined to the reinforcing plate 16.

  As with the corner pillars 4, each through-pass pillar 7 is also inclined with the lower part of the entire length of about 1/5 to the front of the vehicle body and the remaining upper part of about 4/5 length with the rear of the vehicle body. I am letting. A trapezoidal reinforcing plate 17 extending from the end beam 3 to the upper part of the cross beam 9 is laid on the floor plate 11 on the lower surface of the through-pass columns 7, 7. 7 are joined together. A plate-like reinforcing member 18 is disposed in the vertical direction inside the lower vehicle interior of each through-pass column 7. The reinforcing member 18 is formed in a substantially pentagonal shape, and a side edge 18a extending in the vertical direction is joined to the lower vehicle interior side surface 7a of the through-passage column 7, and a lower edge 18b extending in the vehicle body front-rear direction of the reinforcing member 18. Is joined to the reinforcing plate 17.

  By configuring in this way, each through-pass column 7 is improved in the coupling strength with the frame 2 by the reinforcing member 18 joined between the floor plate 11 of the frame 2 and from the frame 2 at the time of collision. The separation can be prevented, and since the reinforcing member 18 is supported from behind, the deformation can be reduced.

  Each corner post 4 has the bottom end of the post 4 a extended to the lower surface of the end beam 3 and joined to the end beam 3, and the integrally formed side panel 4 b is a side beam 8 of the frame 2. Combined with the fact that it is joined to the upper floor plate 11, the bonding strength with the frame 2 is improved, and it is possible to prevent the corner post 4 from being cut off from the upper surface of the frame 2 at the time of a collision. Since it is supported from behind by 4b, the deformation of the corner post 4 can be reduced.

  Furthermore, by laying the reinforcing plates 16 and 17, local deformation of the floor plate 11 is prevented, and load transmission from the head structure to the underframe 2 is performed smoothly. Further, by arranging the plate-like reinforcing member 18 in the vertical direction, the through-pass column 7 can be reinforced in a small space. Further, by integrally forming the column portion 4a and the side panel 4b of the corner column 4, it is possible to avoid a decrease in strength due to the heat effect of welding.

Cross-sectional side view showing a coupling state between the through-pass pillar and the reinforcing member II-II sectional view of FIG. Front view showing the framework of the head structure Side view of head structure

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Head part structure, 2 ... Underframe, 3 ... End beam, 4 ... Corner column, 4a ... Column part, 4b ... Side panel, 7 ... Through-pass column, 7a ... Car interior side surface of a through-pass column, 8 ... Side beam , 9 ... Horizontal beam, 10 ... Middle beam, 11 ... Floor plate, 16, 17 ... Reinforcement plate, 18 ... Reinforcement member, 18a ... Side edge of reinforcement member, 18b ... Lower edge of reinforcement member

Claims (4)

A floor frame is constructed on the upper surface of the frame consisting of end beams , left and right side beams, and horizontal beams coupled between the side beams to form a frame, and corner columns and through-passage columns are erected on the end beams In the head structure of the railway vehicle, a reinforcing plate extending from the end beam to the upper part of the transverse beam is laid on the floor plate on the lower surface of the through-passage column, and a plate-like reinforcing member on the inner side of the lower vehicle of the through-passage column Is arranged in the vertical direction, and the side edge extending in the vertical direction of the reinforcing member is formed on the lower vehicle inner side surface of the through-passage pillar, and the lower edge extending from the lower vehicle inner side surface to the rear of the vehicle body and reaching the upper portion of the transverse beam. A head structure of a railway vehicle, wherein the structure is joined to each of the reinforcing plates . The top structure of a railway vehicle according to claim 1, wherein a reinforcing plate extending from the end beam to the upper part of the side beam is laid on a floor plate around the corner post . 3. The corner column is extended to the lower surface of the end beam and joined to the end beam, and the side beam is joined to the corner column. 4. The top structure of a railway vehicle. 4. The front structure of a railway vehicle according to claim 1, wherein a side panel is formed integrally with the corner post. 5.

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