Truck, in particular pivoted bogie for a rail vehicle such as the wagon of a funicular railway

(42) Date of commencement of the patent: 15.12.1997 (45) Date of issue: 27. 7.1998

<td>(56) Documents:</td><td>(73) Patent owner:</td>

<td>WO 89 / 12566A1 EP 0365489A2 EP 0444015A2 EP 0165752A2</td><td>MAARNFR-RTRn AXTTFNRT ^ PI l STH4FT</td>

<td>AU 61104 / 80A1</td><td>A-1221 VIENNA (AT).</td>

<td></td><td>(72) Inventor:</td>

<td></td><td>TOBER HERBERT DIPL. ING. VIENNA (AT). STRANGE CHRISTIAN VIENNA (AT).</td>

(54) SUSPENSION, ESPECIALLY A FRONT WHEEL FOR A RAIL VEHICLE, SUCH AS FOR THE CARING OF A CABLE CAR

CD

AT 404 010 (57) In a chassis with at least one sprung wheelset 6, in particular bogie with two sets of wheels 6 for a rail vehicle such. B. for the trolley of a funicular railway, each wheel set 6 at its two ends by a respective radially about the axis of rotation of the wheels and approximately horizontally arranged handlebar 4, at its wagenaufbau- or bakery end has a lined with an elastic mass eye 7 *, is guided and in the vertical direction by means of spring damper elements 2, in particular air spring, on the carriage body 9 and Bogie is supported, the links (4) radially to a central point of the car body, in particular the pivot point (5) of the bogie, arranged and each wheel 6 by means of a horizontally arranged, extending in the direction of travel connecting rod (3) with the car body 9 and , preferably resiliently connected to the second gearset 6 of the bogie.

The invention enables a lightweight construction for trolleys, wherein both the longitudinal and the transverse forces or their resilient effects are damped.

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AT 404 010 B

The invention relates to a chassis with at least one sprung wheel, in particular bogie with two wheelsets for a rail vehicle such. B. for the trolley of a funicular railway, each wheel set at its two ends by a respective radially about the axis of rotation of the wheels and approximately horizontally arranged handlebars, at its wagenaufbau- or baulkseitgem end has a lined with an elastic mass eye, is guided, and in the vertical direction by means of spring-damper elements, in particular air springs, on the car body or Bogie is supported.

Such undercarriages with arms arranged radially about the axis of rotation of the wheels are known from WO 89/12566 A1 and EP 0365 489 A2 and have the disadvantage that heavy bogie frames are required, and that complicated for a comfortable transverse suspension and for self-steering of the axles Devices must be arranged. In poor substructure deviations from the ideal track position lead to bogie deformation or reduced ride comfort and increased wear.

The invention has for its object to meet the disadvantages mentioned and to provide a lightweight construction for trolleys. Due to the use of radially displaceable spring-damper elements which are laterally or Above the wheels are the vertical forces directly into the car body or directed into the bogie frame. The spring-damper elements are preferably air springs. The longitudinal and lateral forces are sprung or damped handlebars in the central pivot point or directed directly into the car body. An essential advantage is that in the invention, both the longitudinal and the transverse forces or their springing effects are dampened.

The invention is characterized in that the links are arranged radially to a central point of the car body, in particular the pivot point of the bogie, and that each wheel by means of a horizontally arranged, extending in the direction of travel connecting rod with the car body or with the second wheel of the bogie is preferably connected resiliently.

The invention is shown in the attached Fig. 1-3, for example, and schematically. Fig. 1 and 2 show a bogie in plan and plan, Fig. 3 shows the elevation of a Achsfahrwerkes.

FIG. 1 shows in plan a bogie of a rail vehicle in which the individual wheelsets 6 are connected via damped in the axial direction or suspension arranged handlebar 4 connected to the pivot pin 5 of the bogie. The links 4 are optionally sprung and / or damped in the axial direction and optionally have at their connections to the individual components 6 and 5 elastic eyes 7, 7 'and the bolt connections are mounted in elastic sleeves, so that slight deformations can be compensated within the connection while driving. The wheels 1 of the wheelsets 6 are in the vertical direction by spring-damper elements 2 (Fig. 2) which are formed for example as an air spring, supported. The individual wheels 1 successive sets of wheels 6 are connected by a resilient and / or damped connecting rod 3, which is formed for example by a telescopic tube. Both the connecting rods 3 and the handlebars 4 are arranged in pairs, wherein the handlebars 4 in plan are inclined to each other otherwise substantially parallel and the connecting rods 3 of the wheelsets 6 parallel to each other, in particular in the direction of travel 8, are provided. These measures practically a Einzelradfederung is achieved in a bogie, so that inaccuracies in the rail or to be compensated by poor substructure.

In the context of the invention, both the connecting rods 3 and the handlebars 4 can be formed by rigid elements which have low freedom of movement at the bearing point. Preferably, however, at least one of the components 3 or 4 is mounted with elastic connecting means, or formed directly as a telescope, whereby larger spring travel are made possible. In most cases, lining the eyes with an elastic mass is sufficient. In the case of training the link 4 and / or the connecting rods 3 as a telescopic damper element can be by changing the hydraulic pressure in the individual damper elements, the spring stiffness or Influence damper constant, so that at rapid cornering the inclination of the car body can be influenced by, for example, the hydraulic pressure on the inside of the curve is lowered and increased on the outside of the curve relative to the normal pressure. These measures can increase the maximum cornering speed. Essential to the invention is the use of radially displaceable springs, preferably of air springs, which laterally or are arranged above the wheels. Furthermore, the arrangement of the links in the triangle to the central pivot point is essential, wherein the links can also be designed unsprung by, for example, the terminal pins are mounted in elastic sleeves.

The construction is not limited to the use of a bogie, it can also be used in uniaxial trolleys (FIG. 3) in which the links 4 are articulated at a central point in the wagon body 9 and half connecting rods 3 between the wagon body 9 and wheelset 6 are. By these measures, the wheelset 6 adjusts to the rail conditions, without

AT 404 010 B that larger deformations are introduced into the car body or in the chassis frame.

The invention enables a defined radial self-steering axle adjustment depending on the existing lateral force using sprung and possibly damped connecting rods 3 and the handlebar assembly described above. There is the possibility of superposition of the radial Achseinsteilung by appropriate control of the handlebar or Connecting rods. Due to the symmetrical design, the same components can be used both for a bogie (with two sets of wheels) and for a Achsfahrwerk (with a wheel set), the latter with the halved connecting rods to the car body or be hinged to the chassis frame.