JPS5911957A - Method of assembling side structure of railway rolling stock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 is such that side structures are erected on both sides of the platform frame, and a roof is placed on top of them.The side structures and the roof are each constructed of a frame assembled in a lattice pattern and covered with side outer panels such as steel plates. The structure is as follows.

Here, the side structure completed by the conventional six assembly methods is
As shown in the figure. That is, in this figure, 1 is the roof, 2 is the side structure, 3 is the side skin, 4 and 5 are cross members arranged in the transverse direction of the inner surface of the core side skin 3 and fixed to the core. 5 is a window portion of the side structure 2 for two people, and 5 is a reinforcing material at the base portion 2B of the side structure 2. Reference numeral 6 designates side columns arranged vertically on the inner surface of the side outer plate 3 to intersect with the lateral portion sides 4 and 5 and fixed to the core portion. The lateral members 4, 5 and the side columns 6 are each formed into a U-shaped cross section with seven flanges 4a, 5a, and 6a, respectively, extending in the direction along the fixing surface with the side outer plate 3, as shown in the figure. These flanges 4a, 5a, and 6a are fixed to the inner surface of the side outer plate 3 by spot welding. The horizontal members 4゜5 are disposed intermittently in a thin manner so as to be divided into left and right at the intersection with the side pillars 6, and the horizontal members 4゜5 and the side pillars 6 are arranged intermittently at the intersection of the left and right side pillars 6. They are joined by a gusset plate 7 which is placed in contact with the outer ends of each of the cross members 4, 5 and the side column 6 so as to bridge each other and is spot welded.

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

First, as shown in Fig. 2 (A), the gazette plate 1' is fixed to the specified position of the side post 6', and the side post 6' is assembled with the side post 4' prepared separately. As shown in the same figure (B), it is set in the cradle 20. Next, the assembled frame member A of the assembled state 4' and the side pillar 6' is reversed and moved to the temporary pasting jig 22 as shown in FIG. Assemble the outer side &3' to member A and set it in the temporary pasting jig 22.

Furthermore, the structure B of the frame member A and the side outer plate 3' is inverted and kneaded (using the mobile spot welding machine 23 as shown in DJ).
, and perform spot welding at designated locations to complete the assembly.

However, the conventional (fil)t'fG body assembly method as described above has drawbacks as described in the following items (1) to (4).

(1) In the first step, the gusset plate f to the side pillar, two rods are required.

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

(3) Two inversion processes are required: a frame member inversion process of the cross member and the side column in the side jig, and a structure inversion process of the frame member and the side skin plate in the skin jig.

(4) Since it is assembled based on the frame member surface, the accuracy of the frame member has a large influence on the distortion of the side outer plate.

Therefore, due to the drawbacks (1) to (4) above, the conventional method requires a large number of man-hours, is poor in productivity, increases production cost, and has the disadvantage of reducing buckling strength due to distortion of the side skin. be. In addition, the assembly man-hours and accuracy of the side outer plate largely depend on the non-link technology of the mobile spot welding machine, but with the conventional method, the operability of the spot bath welding machine is poor, the generation of distortion due to over-strike, and the This causes drawbacks such as poor adhesion to the outer panel.

−? In this case, misfire 3 is based on the conventional situation as described above, and the process of assembling the old part and the side column to which the gazette plate was welded and fixed is carried out to make a frame member. We have abolished the conventional assembly method, which requires a separate process for setting the side panels, and have adopted a method in which the cross members, side columns, and side panels are set on a jig at the same time and welded. 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 assembly man-hours and reducing distortion of outer panels.

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

FIG. 3(A) i-1 is a diagram showing the side structure assembled by the assembly method according to the present invention, in which 11 is the roof;
2 is a side structure, 13 is a side outer plate, 14 and 15 are window portions and reinforcing bars as cross members, and 16 is a side post. The window portion 14 and the reinforcing material 15 are provided on the inner surface of the side outer panel 13? It is formed by a continuous trailing edge with a cross-section having a cross-sectional shape, including seven flange portions 14a and 15a each extending in the 1=55 direction. The side pillar 16 is formed to protrude in the direction along the inside 1h of the side outer plate 13 and has a flange tea, and is taller than the window portion 14 and the reinforcing member 15 in a cross section as shown in FIG. 3 (Bl). A cutout is formed by a continuous passageway in the shape of a road mouth, and the side pillar 16 has a cutout on the side where the window portion 14 crosses and on the side of the surface that is fixed to the side outer plate 13, into which the cross members i4 and 15 can be inserted. Grooves 19 are formed respectively.
The cross members and side columns 16 of the reinforcing member 15 are fixed to the side outer plate 13 by spot welding the respective flanges 14a, 15m, and 16a to the inner surface of the side outer plate 13. In particular, in the window part 12A of the side structure 12, a substantially triangular reinforcing member 21 is arranged at the corner thereof to relieve stress concentration, and this reinforcing member 21 is spot welded.
1 and the side outer plate 13, the flanges 16a and 14m of the side column 16 and the window part 14 are inserted and fixed together.

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

That is, as shown in FIG. 4 (Al), the side jig 1 is placed on the side jig C.
Set the plate 13', and place the cross member 14 on the core side outer plate 13'.
', set the side post 16' to l1lA.

Then, the structure consisting of the side skin plate 13', the cross member 14', and the side post 16' is moved to a mobile spot welding machine, and the welding machine uses the side skin plate 13', the cross member 14', and the side post 16'. 'Complete the assembly by spot welding the mutual contact surfaces.

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

(1) The process of welding the gazette plate to the side column, which was necessary in the conventional assembly method, is not necessary.

(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 required, and only one assembly jig is required for the entire process.

(31 (Due to the reason in Section 21), the process of reversing the frame members with the cross members and (i111 ladle), which were previously required, and the frame members and (4) because they are assembled based on the side outer plate surface, Distortion of the plate does not depend greatly on the precision of the frame members.

Therefore, the method according to the present invention not only has the advantages of items (1) to (4) above, but also has fewer man-hours and is excellent in manufacturability, can keep manufacturing costs low, and can prevent distortion of the side skin panels. It has the characteristic of being advantageous in terms of buckling strength because it suppresses this. In addition, as mentioned above, the number of assembly steps and the accuracy of the side outer plate largely depend on the handling technique of the mobile spot welding machine, but with the method of the present invention, there are problems such as poor operability of the spot welding machine, distortion caused by shaving, etc. Poor adhesion with the side outer panels can be almost prevented from occurring.

In the side structure assembly method described above, the structure consisting of the side outer plate 13', the cross members 14' and the side columns 16' set on the side jig C is moved to the mobile spot welding machine. Omitting this moving step is r=J capability.

In this case, as shown in FIG. 4(B), 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, and this Spot R using 24? The spot welding is performed by the hj machine 25, so that the side outer plate 1 is
3', cross members 14', and side columns 16' can be set and spot welded, and there are also advantages over spot welding, such as less distortion and no spot dents left by the octopus method. There is also.

In addition, spot welding automation (
(robotization) will also become easier.

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 the frame is performed separately from the step of setting the side outer panels. Conventional assembly method that requires separate f! By setting the cross members, side columns, and 1tlli outer panel on a jig at the same time and performing post-bath welding, the use of two jigs and the process of reversing the members, which were previously required, can be avoided. It has excellent effects in terms of both manufacturing and strength, such as reducing the number of assembly steps and reducing the number of insects on the side panels.

[Brief explanation of the drawing]

Figure 1 shows the side structure of a railway vehicle assembled by the conventional method.
Figure 3 (A
) is a perspective view showing the side structure assembled by the method of the present invention, FIG. 4(B) is a sectional view showing the shape of the side pillar in the side structure, and FIGS. It is a figure which shows the procedure of a structure assembly method. 12... Side structure 13'... Side outer plate 14'.
...Horizontal member 16'...Side column 19...Notch groove
25...Spot welding machine C...Side jig nako Applicant: Niigata Tetsu Co., Ltd. 1:r)r Agent: Patent attorney Fujio Sasashima No. 2 Fig. 22 (D) Fig. 4 Fig. 16

Claims (1)

[Claims] a side outer plate; lateral sides arranged in the transverse direction of the inner surface of the side outer plate and fixed to the core; a side post to be fixed;
When assembling the side structure of a railway vehicle consisting of The side pillars, which are multi-shaped and have cutout grooves through which the cross members can be inserted, are set in order, and the rear outer panel and 'tA are set in order.
1. A method for assembling a side structure of a railway vehicle, characterized in that the contact surfaces of the side column and the side column are assembled by spot welding.