JPS6312027B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a side structure of a railway vehicle.

Generally, the structure of a railway vehicle has side gutter bodies erected on both sides of the platform frame and a roof placed on top of them.The side structure and roof are each made of a frame assembled in a lattice shape with side outer panels such as thin steel plates. It is structured as follows.

Here, FIG. 1 shows a side gutter body completed by a conventional assembly method. That is, in this figure, 1 is a roof, 2 is a side structure, 3 is a side panel, 4 and 5 are horizontal members arranged in the lateral direction of the inner surface of the side panel 3 and fixed to the surface; 5 is a window strip in the window portion 2A of the side structure 2, and 5 is a reinforcing material in the base portion 2B of the side structure 2. Reference numeral 6 denotes side columns arranged vertically on the inner surface of the side outer plate 3 to intersect with the horizontal members 4 and 5 and fixed to the surface. The lateral members 4, 5 and the side pillars 6 are made of members having a U-shaped cross section and respectively having flanges 4a, 5a and 6a extending in the direction along the fixation surface with the side outer plate 3, as shown in the figure. , these flanges 4a, 5a, and 6a are fixed by spot welding to the inner surface of the side outer plate 3. Cross member 4,
5 is arranged thinly and continuously so as to be divided into left and right at the intersection with the side pillar 6, and the cross member 4,
5 and the side pillar 6 are a gazette plate 7 which is placed in contact with the outer end surfaces of the horizontal members 4, 5 and the side pillar 6 and is spot welded so as to bridge the separated left and right horizontal members. are combined by

Next, a conventional method of assembling such a side structure will be explained based on FIG. 2.

First, as shown in FIG. 2A, the gazette plate 7' is welded and fixed to a predetermined position of the side column 6', and the separately prepared cross member 4' and this side column 6' are assembled, as shown in FIG. 2B. As shown, set it on the side jig 20. Next, the assembled frame member A of the cross members 4' and side columns 6' is inverted, and transferred to the plate pasting jig 22 as shown in FIG. The side outer plate 3' is assembled to the plate and set on the plate pasting jig 22. Furthermore, the structure B consisting of the frame member A and the side outer plate 3' is inverted, and is moved to the mobile spot welding machine 23 as shown in FIG. .

However, the conventional side structure assembling method as described above has drawbacks as described in the following items (1) to (4).

(1) The first step, the welding of the gazette plate to the side column, is required.

(2) A process of assembling thinly divided cross members and side columns is required, and as a result of this process, in addition to the side jig used in this process, the outer plate for setting the side outer plate is required. A jig is required, and two types of assembly jigs must be used.

(3) Two inversion processes are required: a process of inverting the frame members between the cross members and the side columns in the side jig, and a process of inverting the structure between the frame members and the side skin panels in the skin jig.

(4) Since it is assembled using the frame member surface as a reference, the accuracy of the frame member has a large effect on the distortion of the side skin.

Therefore, due to the above-mentioned drawbacks (1) to (4), the conventional method requires a large number of man-hours, is poor in productivity, increases production cost, and has the disadvantages of lowering the buckling strength due to distortion of the side outer panels. In addition, assembly man-hours and side panel accuracy largely depend on the handling technology of the mobile spot welding machine, but with conventional methods, there are problems such as poor operability of the spot welding machine, distortion caused by oblique welding, and tight contact with the side panel. It causes disadvantages such as poor sex.

Therefore, in view of the above-mentioned conventional circumstances, the present invention has developed a process for assembling the thinly divided cross members and the side columns to which the gazette plates are welded and fixed to form a frame member, separately from the process for setting the side outer panels. By eliminating the conventional assembly method that requires separate assembly, and setting the cross members, side columns, and side panels together on a jig and welding them together, we have reduced assembly man-hours and made it easier to assemble the outer panels. The present invention provides a method for assembling a side structure of a railway vehicle, which has excellent effects in terms of manufacturing and strength, such as reducing distortion.

An embodiment of the method of the present invention will be described below with reference to FIGS. 3 and 4.

FIG. 3A is a diagram showing the side structure assembled by the assembly method according to the present invention, in which 11 is the roof, 12 is the side structure, 13 is the side outer plate, 14 and 1.
5 is a window band and reinforcing material as a horizontal member, and 16 is a side pillar. The window band 14 and the reinforcing material 15 are formed of a continuous pull-through material having a substantially U-shaped cross section and respectively having flanges 14a and 15a extending in a direction along the inner surface of the side outer panel 13. Side pillar 16
is a continuous draw-through having a generally U-shaped cross section as shown in FIG. The side member 14 is formed of a material, and the side member 14 is formed on the side where the window band 14 crosses the side post 16 and is attached to the side outer plate 13.
Notch grooves 19 into which the screws 15 can be inserted are respectively formed. The above window strip 14 and the cross members and side columns 16 of the reinforcing material 15 are arranged at the respective flanges 14a, 15a, 1
6a is fixed to the side outer plate 13 by spot welding it to the inner surface of the side outer plate 13. In particular, side structure 1
In the window portion 12A of No. 2, a substantially triangular reinforcing member 21 is arranged at the corner to relieve stress concentration, and this reinforcing member 21 is spot welded.
The flanges 16a and 14a of the side pillar 16 and the window strip 14 are sandwiched between the reinforcing member 21 and the side outer plate 13 and fixed together.

Next, a method for assembling this side structure will be explained based on FIG. 4.

That is, as shown in FIG. 4A, the side outer plate 13' is set on the side jig C, and the cross member 14' and the side post 16' are set in this order on the side outer plate 13'.

Then, this side outer plate 13', the cross member 14' and the side pillar 1
6' is moved to a mobile spot welding machine, and the welding machine performs spot welding on the mutual contact surfaces of the side shell plate 13', the cross members 14', and the side columns 16', thereby completing the assembly.

According to the side structure assembly method described above, there are advantages as shown in the following items (1) to (4).

(1) There is no need to weld the gazette plate to the side column, which was necessary with the conventional assembly method.

(2) By using the cross members and side columns, which are each made of pull-through material, these can be set on the side jig at the same time as the side skin, and the frame members of the cross members and side columns can be formed independently as in the past. As a result, the side jig required for this process is no longer necessary, and only one assembly jig is required for the entire process.

(3) Due to the reason in item (2), the process of reversing the frame members between the cross members and the side columns and the process of reversing the structure between the frame members and the side outer panels, which were conventionally necessary, are no longer necessary.

(4) Since it can be assembled based on the side outer panel surface,
Distortion of the side skin does not depend greatly on the accuracy of the frame members.

Therefore, the method according to the present invention has the advantages of items (1) to (4) above, and has a reduced number of man-hours and is excellent in manufacturability, can reduce manufacturing costs, and can suppress the occurrence of distortion in the side skin panels. It exhibits the characteristic of being advantageous in terms of bending strength. In addition, as mentioned above, the assembly man-hours and side panel accuracy greatly depend on the handling technique of the mobile spot welding machine, but the method of the present invention can eliminate problems such as poor operability of the spot welding machine, distortion caused by oblique welding, and side panel accuracy. Poor adhesion to the plate can be almost prevented from occurring.

In the side structure assembly method described above, the structure consisting of the side outer plate 13', cross members 14', and side columns 16' set on the side jig C is moved to a mobile spot welding machine. This moving step can be omitted.

In this case, as shown in FIG. 4B, a special jig is used as the side jig C in which a copper strip plate 24 as an electrode is disposed on the jig in the part corresponding to the spot row. The side outer plate 13', the cross member 14', and the side column 16' can be set and spot welded using the same side jig C. This method also has advantages in spot welding, such as less distortion and leaving no spot marks.

Furthermore, according to such a method, spot welding can be easily automated (robotized).

As explained above, in the side structure assembly method of the present invention, the step of assembling the thinly divided cross members and the side columns to which the gazette plates are welded and fixed to form a frame member is carried out independently from the step of setting the side outer panels. The conventional assembly method that required the cross members, side columns, and side shell panels to be assembled was abolished, and instead, the cross members, side columns, and side shell panels were set on a jig at the same time and then welded. In addition, since there is no need for a step of reversing the members, the number of assembly steps can be reduced, and distortion of the side outer panels can be reduced, resulting in excellent effects in terms of manufacturing and strength.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a side structure of a railway vehicle assembled by a conventional method, FIGS. 2A to 2D are diagrams showing the procedure of a conventional side structure assembly method,
Figure A is a perspective view showing the side structure assembled by the method of the present invention, Figure B is a sectional view showing the shape of the side pillar in the side structure, and Figures 4A and 4B are the side structure assembly method of the present invention, respectively. It is a figure which shows the procedure. 12...Side structure, 13'...Side outer plate, 14'...
Cross member, 16'... Side column, 19... Notch groove, 2
5... Spot welding machine, C... Side jig.

Claims (1)

[Claims] 1. A side outer plate, cross members arranged in the transverse direction of the inner surface of the side outer plate and fixed to the surface, and cross members arranged in the longitudinal direction of the inner surface of the side outer plate across the arrangement direction of the cross members. When assembling a side structure of a railway vehicle consisting of a side column that is fixed to a surface, on an assembly jig, a side shell plate, a cross member formed of a pull-through material, and a section where the cross member crosses and the side The side pillars formed of a lead-through material with cutout grooves through which the cross members can be inserted are set in order on the side that is fixed to the outer panel, and the contact between the rear outer panel, the cross members, and the side columns is established. A method for assembling a side structure of a railway vehicle, characterized in that the side structure is assembled by performing spot welding on the surface.