DE2349771A1 - FRAME FOR RAIL VEHICLES - Google Patents

Description

Herne, ⁸⁰⁰ ° Munich 40,

Eisenacher Strasse 17

DIpI.-Ir.g. R. H. Bahr

P.O. Box «0 Wipi.-ll.jJ ·" · ^π · » ^β » 'Pai.-Anw. Belzler

Pat. Herrminn-Trentepohl Dinl-PhvS Eduard Betzier Telephone: 3630 11

Telephone: 51013 Wipi. riiy ». CUUOIU ^BCUICI 363012

⁵¹⁰¹⁴ Dipl.-Ing. W. Herrmann-TreRiepohl ^363D13

Telegram address:. «. ,,., V, _T r- telegram address:

Bahrpatente Herne PATENTANWÄLTE Babetzpat Munich

Telex 08 229 853 Telex5215360

i— —j bank accounts:

Bayerische Vereinsbank Munich 952 Dresdner Bank AG Herne 7-520 49S Postal check account Dortmund 558 68-467

^{Re {} - ^: MO 4406 B / ks

Please state in the answer. Please send a letter to:

2nd October 1973

Gloucester Railway Carriage & Wagon Company Limited, Bristol Road, Gloucester, England

Frame for rail vehicles.

The © invention relates to the bogie © for rail vehicles and is directed in particular on the suspension arrangement such bogies.

The type of bogie used for passenger vehicles generally includes fixed cross members that support a pair of side frames connect and support a floating cradle suspended from handlebars attached to the cross members are, so that a lateral movement of the vehicle superstructure relative to the bogie is possible. on the other hand the bogies normally used for freight wagons have a single cross member that connects the two side

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frame connects together and forms the cradle itself, which normally does not float on handlebars and either completely rigid with the side frame or in the case of a "resilient plankless" bogie slidable Springs is mounted in the side frame.

The object of the present invention is to create a bogie whose suspension arrangement has side frames has an improved basic construction. According to the invention, a bogie for rail vehicles includes a pair fixed side frames, front and rear axles extending between the side frames, front and rear Stops on the side frames, a cross member extending between the side frames, and on each end portion has front and rear stops which are opposite the front and rear stops on the side frame in such a way that that in each case two opposing stops cooperate and a pair of stops located at a distance form, between which a resilient block is arranged, which consists of alternating layers of a rigid material and consists of an elastic material, each block down from its stop on dsm Quergliea to his Stop on the side frame is inclined. The arrangement is such that vertical and lateral loads on the cross member and tensile and braking forces combined shear and compression loads in the elastic material cause. Each side frame is in its part in front of the front stop and in its part behind the rear one Stop provided with an opening which is associated with the braking force applying device of the Wheel and axle set are aligned.

Each opening is preferably generally triangular in shape in side view, with the corners of the triangle being rounded. Each triangular opening is preferably through

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an upper substantially horizontal side, one extending downward from the outer end of the horizontal side in a position within the inner end of the horizontal side extending side and a side delimiting the extend generally parallel to the planes defining the rigid layers of the adjacent resilient block contain.

Each resilient block, seen in plan view, can have two parts which are inclined relative to one another to the longitudinal extent of the side frames. The stops, between which the resilient blocks are arranged, can be formed by fastening links that are mounted on the cross member or on the side rails. that it can be assembled or disassembled without the entire vehicle being removed from the superstructure, so that it should be necessary to replace one of the side frames, an activity that can only be carried out with considerable difficulty on normally constructed bogies. The presence of the openings in the side frames enables a substantial reduction in the weight of each side frame, while at the same time facilitating the cooling of the braking force-applying devices and their maintenance and renewal.

As a result of the inclination of the resilient blocks to the vertical such that the main stress is divided partly into shear stresses and partly into compressive stresses the main load is a bending moment in the side frame that can be designed to be entirely the bending moment counteracts that is due to the vertical loads on the axle boxes. As a result, will the cross section of each side frame between the two

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resilient blocks are more of a tie rod than a bending of stressed beams. It follows that the cross-section of the frame can be made narrower than in cases where, for example, the loads on coil springs rests at the ends of the cross member which would cause a much larger bending moment in the frame.

The invention is described below with reference to the drawings reproduced embodiments are explained in more detail.

The drawings show in

Fig. 1 is a schematic plan view of a "resilient plank free ^M - ¥ aggondrehgestell (" spring plankless "wagon bogie truck) according to the invention;

Fig. 2 is a similar view of a truck bogie according to the invention;

3 shows a partially cut-away half view of a further construction of a "spring plankle.ss ^w " bogie according to the invention;

Fig. 4 is a side view of a bogie similar to that according to Fig. 3; and in

FIG. 5 is an end view of the bogie of FIG. 4.

Each bogie according to FIGS. 1 and 2 has side frames 1 in which the axles of two sets of wheels and axles 2 are rotatably mounted in axle boxes 3 conventional embodiment. In the bogie of Fig. 1 is a single Cross member 4 is provided with a swivel socket 4a and connects the side frames 1, while in the case of the bogie according to FIG.

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two cross members 5a as a single manufactured member connect the two side frames 1 in a similar manner. In the two .Ausführungsformen the cross members to the side frame 1 with the help of blocks 6 of rubber or other resilient material are mounted and resiliently suspended. Four such blocks are inserted between adjacent parts of the cross members and the side frames 1. The blocks 6 are composed of arched laminated bodies which have three layers of rubber which are each inserted between four alternating steel plates.

The wagon bogie according to FIG. 2 has a distance between the two cross members 5a, in which a separate floating cradle 7 is mounted, which is formed with a wagon pivot pan 7a and allows a lateral movement of the car body mounted on the cradle. Four further resilient blocks 8 in the form of a layered cylinder are arranged near the four corners of the cradle 7 and provide a resilient mounting of the cradle on the prefabricated cross member. In the bogies according to FIGS. 3 and 4, the laminated body of the resilient blocks 6, on the cross member 4 with the side frame 1 connect _s Y-shape instead of arc shape, but are arranged as described above and operate in the same manner. The attached braking devices of the usual form comprise brake beams 9 and brake shoes, which act on both sets of wheels and axles 2.

Each block 6 is secured between a pair of opposing stops on the cross member and a side frame. The cross member has front and rear stops at each end. The side frames have front and rear Stops opposite the front and rear stops on the cross member. Appropriately designed in its contour Fasteners, as indicated at 11,

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are on vertical mounting surfaces on one of the Side frame 1 and the cross member assembled and deliver the stops. Each resilient block 8 is at the lower end mounted on a mounting member on a vertical surface of a cross member 5a and at the upper end on one lateral surface of the cradle 7 attached. This arrangement provides a downward slope of the resilient Blocks in such a way that they not only place loads on the body, but also tensile forces, braking forces and lateral loads as a result Absorbing lateral evasions of the body in motion as combined shear and tensile loads.

As can be seen from Fig. 4, the downward inclination of the blocks 6 leads to a vertical body load in the direction of arrow W on the cross member 4 acting on each side frame 1 as the resulting compressive forces in the direction the parts T is transferred. These pushing or compressive forces generate bending moments in the side frame 1, which are so can be designed that they almost completely absorb the bending moments due to the vertical loading of the axle boxes balance. This allows the cross-section of each side frame 1 between the two corresponding blocks 6 to be substantial be chosen less than normal, so that the side frames are considerably cheaper and lighter.

The resilient blocks can also be arranged so that their longitudinal axes point inwards from the side frames and upwards point so that they have the inclination, the associated cross member and the wheel and axle sets 2 square with to hold the side frame 1. In all cases it is the two side frames that are the main links of the bogie structure represent, held relative to one another by the resiliently suspended cross member and have openings 12, as can be seen from FIG.

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The openings 12 have a triangular shape with rounded edges Corners and are in alignment with the braking devices 9 », so that access to them for maintenance purposes facilitated and the heat dissipation is favored. Each triangular opening 12 has an upper generally horizontal one Side 12a and a side 12b which extends downward from the outer end of side 12a to a point extends within the inner end of side 12a. The third side 12c of each triangular opening extends thus parallel to the planes which contain the rigid laminated body of the adjacent resilient block 6 and thus at right angles to the direction of action of the thrust force transmitted by the block, the openings 12 are thus arranged so that that there is a weight reduction of each side frame 1 without reducing its effective strength will.

Patent claims:

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Claims (4)

Patent claims% 1. / Bogie for rail vehicles with a pair of rigid Nside frames, extending between the side frames front and rear axles, front and rear stops on the side frame, one located between the side frames extending cross member with front and rear stops at each end portion in such an arrangement that they the corresponding stops on the side frame are opposite in such a way that that at each end of the cross member two spaced apart lying pairs of stops arise, which take up a resilient block between them, which consists of alternating Layers of rigid material and a resilient material and down from the stop on the cross member to Stop on the side frame is inclined, the arrangement being such that vertical and lateral loads on the cross member and tensile and braking forces produce combined shear and pressure loads in the resilient material, characterized in that each side frame (1) Provided with an opening (12) in the part in front of the front stop and in the part behind the rear stop which is aligned with the devices (9, 10) of the associated wheel and axle set (2) which apply the braking force. 2. Bogie according to claim 1, characterized in that each opening (12) is generally triangular with rounded Has corners. 3. Bogie according to claim 2, characterized in that 4098 15/037 3 each triangular opening (12) through an upper substantially horizontal side (12a), a side (12b) extending from the outer end of the horizontal side (12a) extends into a position within the inner end of the horizontal side (12a) and delimited a side (12c) which extends generally downwardly into the planes which the rigid Contain layers of the associated resilient block. 4 09815/0373