DE2454275A1 - SIDE GATE FOR VEHICLES AND METHOD OF MANUFACTURING IT - Google Patents

Description

Patent attorney Olpl-Ing. R. BEETZ ■ ·! »

Dlpl-Ing. K. LAMPRECHT

Dr.-Ing. ftBEETZ Jr. • M you oh · η 32, 8toliMderfetr. 1·

.233-23.4O7PC23.4O8H) November 15, 1974

TAT RA, närodni podnik, Koprivnice (CSSR)

Board gates for vehicles and processes for their manufacture

The subject of the invention is a one-piece drop side for vehicles, in particular for commercial vehicles, and a method for their production from a sheet steel strip by rolling on a roller train in one operation. "'

So far, the side walls of vehicles are made of prepared sheet metal and pressed stiffeners welded. .

According to a known manufacturing process, the side wall of the car body is constructed from three uniformly hollow support profiles, composed of an upper edge support and a lower profile support, whose The lower edge extends to the longitudinal profile support of the vehicle frame and overlaps it. All profiles, which form the side wall, are screwed to the beams, which are at equal or different intervals along are distributed along the entire length of the side wall and extend along their entire height.

233-S8432-J3889-SdH

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Flat tabs are welded onto the straps, the part of which protrudes from the side wall in hook-in eyelets is curled up.

A further embodiment solves the problem with the aid of a cantilevered wall made of profiled strips, which connected together by hooking, each profile of which has a groove on its one end and a groove on the other Longitudinal end contains a tongue which engages in a wedge shape in the groove of the adjacent profiled band. In the however, overlapping longitudinal ends of the profiled strips must have openings for the connecting screws by means of which the wedges and the springs of the connected profiled strips are held against one another.

Next, side walls made of an outer cover plate and an inner stiffening plate are known, which on outer edge are firmly connected along the entire length and in which the further connection of the both sheets is done by expanding sheets that are pressed out of the inner stiffening plate or on the same are attached.

Also known are components with arched, resilient and clamping attachments or grooves, which run along the edges of the same, with a free edge of the groove being bent inwards so that the Pushing out the free. Edge of the groove from the groove of the adjacent component is prevented.

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Another older method uses connecting parts in the form of a male and female mold that connect to each other overlap along their edges, the patrix being in the form of a ledge b. that runs downwards along the protruding outer edge, and wherein the die is in the form of a groove which is open in the upward direction and which runs on the other side of the edge. Are downward facing and "flanged supports laterally curved and are effective when two parts are put together and when the male and female molds are engaged self-locking.

The disadvantages of all of these methods are that a significant number of the various types of preparation Parts are necessary, the manufacture of which is complicated and expensive, and which are carried out by welding, screwing together and, the like must be connected.

The object of the invention is to create a system made up of the same and simple to manufacture individual parts Side wall.

This object is achieved in that on their upper and an upper flange and a lower flange formed from the material of the ship's side and the lower longitudinal edge that complement each other in form when the drop sides are put together. The upper stiffening flange should be pressed through with an inner one Rounding radius be provided in which press-through

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-H-

a lower stiffening flange that can be assembled in a modular manner engages with a projection that is rounded with the same radius, and the shape of the press-through corresponds to the upper stiffening bead, while the lower stiffening bead is pressed through with an inner radius is provided, in which a correspondingly shaped rounding of the upper stiffening flange engages with the same radius.

The method for producing the drop side according to the invention consists in that the drop side is made of a sheet steel band is produced by rolling in a rolling mill in a single operation, in which both the necessary Stiffening press-throughs as well as the bending of the stiffening flanges into the closed end shape will. At the same time as the stiffening flanges are rolled, the fastening of the ends of the stiffening flanges can be advantageous be carried out on the ship's side by a weld seam.

The following are embodiments of the invention Drop side described with reference to the drawing. Show it:

Fig. 1 is a section through the side wall with a closed upper one and one opened lower reinforcement bead;

Fig. 2 shows a section through the side wall with rolled closed upper and lower stiffening flanges and with elongated stiffening grooves;

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Pig. 3 shows a section through the side wall with an upper and a lower stiffening flange, in which the ends of the flanges to the outer side of the Side walls are curved;

4 shows the same section with the inner side the side wall bent ends.

In the embodiment according to FIGS. 1 and 2, the side wall is provided with an upper 1 and a lower stiffening bead 2 and with a straight middle wall 3. the upper stiffening flange is closed, while the lower stiffening flange in FIG. 1 is designed to be open and by subsequent welding of an insert 6 is closed. At the points of greatest stress on the upper stiffening flange, a stiffening can be achieved by a pas.s.end shaped insert 5. With larger dimensions of the middle straight wall J and As a result, in the event of a larger surface load, the wall 3 can additionally be provided with stiffening ribs 7 or through a stiffener 4 are reinforced, leading to the longitudinal ends, or perpendicular to the flanges of the side wall.

In the embodiment according to FIGS. 3 and 4, the side wall with an upper Versteifungsbördeiung 11 and with a lower stiffening flange 12 provided. The upper Versteifungsbördeiung 1 has above a horizontal flat 13, which is on the outer side of the ship's side in a Bevel 16 and on the inner side in a rounding with the radius R merges into a press-through 15, in the one projection 14 of the lower stiffening flange

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engages, which is carried out in accordance with the press-through 15 with the same radius of curvature R. the If required, flanges can be made by means of elongated reinforcement press-throughs are provided, as shown, for example, as an indentation 17 in the upper flange 11 ″ is. The flanging can be bent inwards or outwards. Fig. 3 shows the inflection the flanging outwards (direction of arrow A) and FIG. 4 inwards (direction of arrow B). One difference is only in the execution of the weld seams 18, 18a at the end 20 of the upper and lower flange, which is shown in FIG. 3 is mounted on the outer side of the ship's side and in Fig. 4 on its inner side, which is an arrangement of a further press-fit 19 required, in which the end 20 of the upper flange 11 is let in, so that the plane Surface of the inside of the drop side is not disturbed.

The method for producing the drop side is characterized in that the drop side is made of sheet steel is made, which in appropriate dimensions by rolling on a suitable rolling mill in a single Operation is made in which both the necessary stiffening profile ribs and the bending of the stiffening flanges is carried out into the closed end shape. Simultaneously with the rolling of the stiffening flanges the attachment of their ends 20 can be carried out by a weld 18, 18a on the ship's side.

The advantages of the side walls produced in this way are that by rolling the entire profile from one Piece in a single operation the number of for the

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previous preparation of the raw material necessary operations, as well as the number of necessary
Welds is significantly reduced. The previous pressing of the profile ribs is also omitted.

A drop side manufactured in this way can be used with advantage, for example, in the car bodies of grocery vehicles that are exposed to great stress and the profiles can be arranged at the points of maximum stress as required. The production according to the method described is
faster and more economical than the previously known and used methods of pressing and welding. -

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Claims (12)

- 8 claims 1 / One-piece drop side for vehicles, especially for Utility fan tools, characterized that on its upper and lower longitudinal edge from the material of the ship's side an upper flange (1, 11) and a lower flange (2, 12) are formed, which are mutually shaped when the side walls are assembled add to. 2. Drop side according to claim 1, characterized in that the upper stiffening flange (11) has an indentation (15) having an inner radius of curvature (R-,), in the a modular adjustable lower stiffening flange (12) with a projection (14) engages with the Radius (R-,), the compression (15) 'of the upper stiffening flange ment (11) is rounded. 3. Drop side according to claim 1, characterized in that the lower stiffening flange (12) has an indentation (15a) with an inner radius (R), in which a rounding of the upper stiffening flange corresponding to its shape (11) engages with the same radius (R-). 4. Drop side according to one of claims 1 to 3 »characterized in that that the stiffening flanges (l, 11; 2.12) are bent over to the outer side of the ship's side. 5. side wall after one of the. Claims 1 to 3 »characterized in that that the stiffening flanges (1,11; 2,12) are bent towards the inner side of the ship's side. 509822/0281 6. Drop side according to one of claims 1 to 5, characterized in that a flattening (13) of the upper stiffener ungsbördelung (11) with a bevel (16) and the face of the bevel with a stiffening indentation (17) is provided, which is directed inwards or outwards. 7. Drop side according to one of claims 1 to 6, characterized characterized in that the bent end (20) of the Versteif ungsbördelung (11,12) to the outside or to is bent inside, is attached to the side wall with the help of a weld (18, 18a). 8. Drop side according to one of claims 1 to 7 »thereby characterized in that the smooth wall of the side wall between the stiffening flanges (1,2) with elongated stiffening press-throughs (7) is provided. 9. Drop side according to one of claims 1 to 8, characterized in that, that between the stiffening flanges (1,2) at least one stiffener (5) is arranged. 10. Drop side according to one of claims 1 to 9 »characterized in that at least one of the stiffening flanges (1,2) is provided with a stiffening insert (5 »6). 11. Process for the production of a one-piece drop side according to one of claims 1 to 10, characterized in that the side wall is made of a steel sheet by rolling on a Rolling train is produced in a single operation, in which both the necessary stiffening ribs as well 50 98 22/02 81 - ίο - the bending of the stiffening flanges into the closed one Final shape to be executed. 12. The method according to claim 11, characterized in that that simultaneously with the rolling of the stiffening flanges (11, 12) the fastening of the ends (20) of the same is carried out on the ship's side by welds (18, 18a). 0 9822/0281 Blank page