JP2006341813A - Vehicle body bone structure for railway vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body bone structure having sufficient strength on practical use by simple structure and joint work in which coupling strength is enhanced without a coupling plate even if vertical and lateral bones are laser-welded to an outer plate. <P>SOLUTION: When the bones 1, 2 arranged in vertical and lateral sides are welded/joined 5 to the outer plate 3 while one end 2a has a relationship opposed to the other side surface, the other bone 1 is abutted while laid on the end 2a of one bone 2 welded/joined to the outer plate 3 and the outer plate 3 and the other bone 1 is welded/joined 4, 6 to both of these to accomplish the above object. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure frame structure of a railway vehicle, and more particularly to a structure frame structure of a railway vehicle in which one end of a bone arranged vertically and horizontally has a relationship facing the other side surface and is welded to an outer plate. It is.

  A structure structure of a railway vehicle in which one end of a bone arranged vertically and horizontally has a relationship of facing the other side surface and is welded to an outer plate is already known (for example, see Patent Document 1). As shown in FIGS. 7 (a) and 7 (b), this is the case where the end of the lateral bone b having a hat-shaped cross section faces the side surface of the longitudinal bone a having a hat-shaped cross section. The other flange b1 overlaps with the flange a1, and spot welding as shown in FIG. 7C is performed on the outer plate c including the overlapping portion at the welded portion d.

However, in such a joint structure, the longitudinal bone a and the transverse bone b are simply joined with the flanges a1 and b1 overlapping each other, and the joint structure in which the material mechanical structure due to the hat-shaped cross section cannot be utilized. The strength is low and the buckling strength of the outer plate cannot be increased. Therefore, the one described in Patent Document 1 is applied with a joint plate e as shown by phantom lines in FIGS. 7 (a) and 7 (b) and spot-welded at a welded joint d so as to obtain a required strength. I have to.
Japanese Patent Laid-Open No. 9-30414

  However, in spot welding, welding is performed with a load of 1 ton, so the impression appears on the outer surface and it looks bad, and it takes time and effort to join, but the cost of spot welding is expected to improve in the future. Absent. In addition, the load is high and a large-scale apparatus, and an expensive copper electrode board g as shown in FIG. Manufacturing a typical joint plate e and attaching it by spot welding causes a further increase in cost. If this is replaced with the joint plate e and the spot welding interval is set to be narrow, the appearance is further deteriorated, and the cost is increased in proportion to an increase in spot welding locations. In addition, since there is a limit to narrowing the interval of spot welding, arc welding is also used instead of spot welding to ensure the strength according to the type and application of the vehicle. This is also a cause of high cost because the heat effect of the material is so strong that it is necessary to finish the outer surface.

  Therefore, as shown by the thick line f in FIGS. 8A and 8B, it is also conceivable to perform laser welding as shown in FIG. 8C. However, since the penetration width is narrow in laser welding, there is no advantage of continuous joining at the ends of the bones a and b, and it is considered that a concentration force is likely to work at the end of the laser welded part f. Adoption of the joint plate e is indispensable and is still expensive.

  It is an object of the present invention to increase the strength of joints without using a joint plate even when laser welding longitudinal and lateral bones to the outer plate, and to provide a structure frame for a railway vehicle having a practically sufficient strength with a simple structure and joining operation. To provide a structure.

  In order to achieve the above-described problems, the structure structure of a railway vehicle according to the present invention has a relationship in which one end of a bone arranged vertically and horizontally is opposed to the other side surface and welded to the outer plate. The main feature of the structural bone structure of a railway vehicle is that the end of one bone welded to the outer plate and the other bone are applied across the outer plate, and the other bone is welded to both of them. Yes.

  In such a configuration, the end of one bone welded to the outer plate and the outer plate are straddled across the other bone and welded to both, thereby allowing the vertical and horizontal bones to be attached to the outer plate. While allowing continuous laser welding, the entire end of one bone has a welded joint structure to the outer plate, and the two bones overlap with each other in the material mechanical three-dimensional shape under the other bone. Therefore, stress can be prevented from concentrating on the end of one of the bones while increasing the joint strength of the longitudinal and lateral bones.

In the further configuration, the other bone is arranged along the opening of the window or doorway,
In railway vehicles, it is widely adopted to reinforce the outer plate through a long transverse bone in the longitudinal direction, and there are many ends facing the side of the longitudinal bone along the opening of the window or doorway, and the joint between them It is effective in increasing the joint strength and joint strength where strength and joint strength to the outer plate are likely to be a problem.

In the further configuration, the other bone is the opening frame or opening frame material of the window or door opening,
It is possible to share the opening frame or the opening frame material necessary for the opening of the window and the entrance / exit for the bone, and to improve the joint strength and joint strength.

One bone has a hat-shaped cross-section and both sides of the flange are attached to the outer plate and welded by laser welding, and the other bone has a hat-shaped cross-section or a Z-shaped cross-section and is external to the end of one bone. In a further configuration, the flanges on both sides are individually applied to the plate and welded to one end of the bone by laser welding, spot welding or plug welding, and the outer plate is welded by laser welding.
The joint of the longitudinal and lateral bone to the outer plate by laser welding can be realized, and the joint strength and joint strength can be improved.

  Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in combination in various combinations as much as possible.

  According to the structure bone structure of a railway vehicle of the present invention, the entire end portion of one bone has a welded joint structure to the outer plate, and the two bones overlap with each other in the material mechanical three-dimensional shape under the other bone. With a simple and inexpensive joint structure that is welded and joined to the other bone, stress can be prevented from concentrating at the end of one bone while increasing the joint strength of the vertical and horizontal bones regardless of the welding method. . In addition, since continuous weldability of the longitudinal and lateral bones to the outer plate is not impaired, it is suitable for realizing simpler and more productive by laser welding.

  Also, in railway vehicles, there are many locations where the ends of the lateral bones face the side of the longitudinal bone along the opening of the window or doorway, and it is easy to secure the strength that is likely to cause problems at those locations, and along the opening The continuous laser welded portion is suitable because it is waterproof against entry of rainwater or the like from the opening.

  In addition, an opening frame or an opening frame material necessary for opening windows and doorways can be shared by the bones, and the joint strength and joint strength can be improved.

  Embodiments relating to the structure of the structure of a railway vehicle according to the present invention will be specifically described with reference to FIGS. 1 to 6 to provide an understanding of the present invention.

  As shown in the example shown in FIG. 1 and the example shown in FIG. 2, the structure bone structure of the railway vehicle according to the present embodiment is such that the end 2 a of one bone 2 in the bones 1 and 2 arranged vertically and horizontally is the other bone 1. In order to reinforce the outer plate 3 by welding to the outer plate 3 with a relationship opposite to the side surfaces, the end 2a of one bone 2 welded to the outer plate 3 by the welded joint 5 and the outer The other bone 1 is applied across the plate 3, and the other bone 1 is welded to both of them by welding joints 6 and 4. In this way, by connecting the other bone 1 across the end 2a of the one bone 2 welded to the outer plate 3 and the outer plate 3, the other bone 1 is welded to both, and thereby the vertical and horizontal bones 1, The entire end 2a of one bone 2 has a welded joint structure to the outer plate 3 so that continuous laser welding to the second outer plate 3 is allowed, and both material mechanics are under the other bone 1. As the three-dimensional shape overlaps and is welded to the other bone 1 welded to the outer plate, stress is applied to the end 2a of one bone 2 while increasing the joint strength of the longitudinal and lateral bones 1 and 2. You can avoid concentration. The vertical and horizontal bones 1 and 2 are welded together with sufficient joint strength by plug welding using a through-hole provided in the upper bone 1 such as the welded joint 6 shown in FIGS. Can be obtained easily and reliably, and laser welding or spot welding can be used instead. However, in order to guarantee the necessary joint strength in spot welding or laser welding, it is preferable to perform welding joining at a plurality of locations and a plurality of lines. Laser welding of the vertical and horizontal bones 1 and 2 to the outer plate 3 has a penetration depth t of 0.1 mm to about 50% of the thickness of the outer plate 3 due to weld joint strength and appearance problems. Is preferable.

  As a result, the entire end 2a of one bone 2 of the vertical and horizontal bones 1 and 2 to be welded to the outer plate 3 has a welded joint structure to the outer plate 3, and both of them are under the other bone 1. A simple and inexpensive joint structure in which the two-dimensional shape is overlapped with each other, that is, the end 2a of one bone 2 is welded and joined to the other bone 1 in the middle of the laser-welded continuous portion. Thus, regardless of the welding method, stress can be prevented from concentrating on the end 2a of one bone 2, particularly the end of the laser weld joint, while increasing the joint strength of the vertical and horizontal bones 1 and 2. . Moreover, since the continuous weldability of the vertical and horizontal bones 1 and 2 to the outer plate 3 is not impaired, it is easier and more productive by laser welding as in the welded joints 4 and 5 indicated by the continuous thick lines in FIGS. Can be realized with good performance. Moreover, it is also suitable for welding the bones 1 and 2 made of stainless steel plate to the outer plate 3 made of stainless steel plate.

  More specifically, one bone 2 has a hat-shaped cross section as shown in the example of FIG. 1 and is welded by laser welding with both flanges 2b and 2b applied to the outer plate 3. The other bone 1 has a hat-shaped cross section as in the example of FIG. 1 or a Z-shaped cross section as in the example of FIG. 2, and straddles the end 2a of the one bone 2 and the outer plate 3, The flanges 1b and 1b on both sides are individually applied to the end 2a, and the end 2a of one bone 2 is welded and joined by laser welding, spot welding, or one of the aforementioned plug weldings, and the outer plate 3 is laser welded. Or it is welded by spot welding. As a result, the longitudinal and lateral bones 1 and 2 are joined to the outer plate 3 by laser welding, and the longitudinal and lateral bones 1 and 2 are joined together, joined to the outer plate, and their mechanical shapes are utilized. The joint strength and joint strength can be improved.

Laser welding is performed using, for example, laser welding equipment as shown in FIGS. As shown in FIGS. 6 (a) and 6 (b), the laser welding equipment includes a welding work part 11 and left and right jig carts 13 and 14 that run on rails 12 extending left and right from the welding work part 11. The left and right jig trolleys 13 and 14 support the outer plate 3 constituting the structure of the body, roof, wife, etc., and alternately enter the welding work section 11 to support the outer plate 3 It repeats using for the laser welding with the bones 1 and 2 arranged vertically and horizontally, and the structure manufactured by welding is removed and replaced with a new outer plate 3 every time it comes out of the welding work part 11. The welding work unit 11 has a gate-type work leg 16 that runs on a rail 15. The work leg 16 supports, for example, a multi-joint robot 17 having about 5 joints, and laser welds the bones 1 and 2 arranged vertically and horizontally on the outer plate 3 on the jig carriage 13 that has entered the welding work unit 11. For this laser welding, the articulated robot 17 has a laser torch 18 at the tip of the robot arm, as shown in FIG. 5, and a laser is supplied from the laser oscillation device 19 with a cooling mechanism through the optical fiber by the laser torch 18 and the welded portion. A predetermined laser welding is performed by laser irradiation. For this laser welding, the welding work unit 11 has pressurizing mechanisms 21 at two left and right sides thereof, and the outer plates on the jig carriages 13 and 14 that have entered the welding work unit 11 and the bones arranged vertically and horizontally thereto. 1 and 2 are pressed and supported at predetermined positions from above to prepare for laser welding. The pressure mechanism 21 supports two pressure rods 24 on the left and right sides of a gate-shaped support leg 23 that runs on the rail 22, and performs the pressure support by the pressure rods 24 on the left and right sides. . These laser welding operations are performed with the cooperative operation control of the robot system control device 31 and the jig system control device 32.

  3 and 4 show specific examples in which the welded joint between the outer plate 3 and the bones 1 and 2 arranged vertically and horizontally is applied to the side structure of the vehicle body. The side structure 41 shown in FIGS. 3 and 4 is of a type in which one opening of the window 43 is provided between the openings of the doorway 42, and the other bone 1 is arranged along the opening of the window 43 and the doorway 42. The one bone 2 whose end 2a is opposed to the side surface is a horizontal bone arranged between the opening of the entrance / exit 42 and the opening of the entrance / exit 42, and the opening of the entrance / exit 42 and the opening of the window 43 It is a horizontal bone placed between.

  In railcars, as seen in the side structure 41 shown in FIG. 3, it is widely adopted to reinforce the outer plate 3 through the long transverse bone 2 in the longitudinal direction, and the vertical bone along the opening of the window 43 and the entrance 42. The number of ends 2a facing one side is large, and the joint strength between them and the joint strength to the outer plate 3 are likely to be a problem. To increase the joint strength and joint strength, FIG. The specific example shown in 4 is effective. Moreover, as shown in FIG. 4, the laser weld joint 4 continuous along the openings of the window 43 and the entrance / exit 42 is preferable because it is waterproof against intrusion of rainwater or the like from these openings.

  In the example shown in FIGS. 3 and 4, the longitudinal bones 1 along the openings of the windows 43 and the entrances and exits 42 have a hat-shaped cross section, and the openings provided in the openings of the windows 43 and the entrances and exits as shown in FIG. 4. Although the frame or the opening frame members 42a and 43a are separated from each other, the joint strength and the joint strength can be improved even with a simple structure in which this is a common member formed integrally.

  In particular, the lateral bones 2 are arranged at substantially equal intervals in the vertical direction through the inner surface of the outer plate 3 except for the windows 43 and the openings 42, and the vertical bones 1 are arranged in the windows 43 and the doors of the outer plate 3. It is arranged along the opening and the side part of 42, and the edge part (not shown) of the outer plate | board 3, and between the longitudinally oriented bones 1, the longitudinally facing reinforcing material 46 is applied to the laterally facing bones 2 from the inside. Joining is performed at any one of the welding joints 47 of plug welding, spot welding, and laser welding. As a result, the surface area through which the transverse bone 2 can pass is arranged in preference to the longitudinal bone 1 to avoid the division of the transverse bone 2 by the longitudinal bone 1 to ensure the continuity of laser welding. However, the vertical bone 1 that is extremely reduced, and the reinforcing material 46 welded and joined by various welding without affecting the outer plate 3 and the appearance, passing vertically to the horizontal bone 2 between the vertical bones 1. The necessary structural strength can be secured. In particular, the reinforcing material is not welded to the outer plate and can be increased in strength against out-of-plane deformation due to the in-plane shear force of the outer plate in a floating state without contact. For this purpose, as shown in the figure, the transverse bone 2 has a hat-shaped cross section, the flanges 2b on both sides thereof are welded to the outer plate 3, and the longitudinal reinforcement 46 has a hat-shaped cross section. It is preferable to have a notch 46b that fits behind the flange 2b of the sideways bone 2 so that the flange 2b of the sideways bone 2 hits its own flange 46a and is welded to the flange 2b.

  INDUSTRIAL APPLICABILITY The present invention can be practically used for the structure of a railway vehicle and is advantageous in terms of work, cost, strength, and the like.

It is the front view and top view from an inner surface side which show one example of the joining structure of the outer plate | board of the rail vehicle in embodiment of this invention, and the bone distribute | arranged vertically and horizontally. It is the front view and top view from the inner surface side which show another example of the joining structure of the outer plate | board of the railway vehicle in embodiment of this invention, and the bone distribute | arranged vertically and horizontally. It is a front view from the inner surface side which shows the side structure which applied the example of a joining structure of FIG. 1, FIG. FIG. 4 is a cross-sectional view between the window and the entrance / exit of FIG. 3. It is a cross-sectional view which shows the laser welding equipment which welds the welding junction part in this Embodiment. It is the top view and front view of the laser welding equipment of FIG. It is the front view and top view from the inner surface side which show the example of the welding joint structure of the conventional outer plate and the bone | frame arranged | positioned vertically and horizontally, a spot welding explanatory drawing. It is the front view and top view from the inner surface side which show the case where laser welding is applied to the joining example shown in FIG. 7, and spot welding explanatory drawing.

Explanation of symbols

1, 2 Bone 2a End 1b, 2b Flange 3 Outer plate 4, 5, 6 Welded portion 41 Side structure 42 Entrance / exit 43 Window 42a, 43a Open frame or open frame material

Claims (4)

In the structure bone structure of a railway vehicle in which one end of the bone arranged vertically and horizontally has a relationship facing the other side surface and is welded to the outer plate,
A structure bone structure of a railway vehicle, characterized in that an end of one bone welded to the outer plate and the other bone are applied across the outer plate, and the other bone is welded to both of them. The structure bone structure of a railway vehicle according to claim 1, wherein the other bone is arranged along an opening of a window or a doorway. The structure bone structure of a railway vehicle according to claim 2, wherein the other bone is an opening frame or an opening frame material of an opening of a window or an entrance. One bone has a hat-shaped cross-section and both sides of the flange are attached to the outer plate and welded by laser welding, and the other bone has a hat-shaped cross-section or a Z-shaped cross-section and is external to the end of one bone. The flanges on both sides are individually applied to the plate and welded and joined to one end of one bone by laser welding, spot welding or plug welding, and the outer plate is welded and joined by laser welding. The structure bone structure of a railway vehicle according to any one of the above.

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