DE2936878C2 - Articulated vehicle, in particular an articulated bus - Google Patents

Description

3

Articulated connection of the turntables 4 and 5 As shown in FIG. 1 recognizable, the cardan shaft wanders

formed pivot bearings away are drive torques when the articulated bus buckles due to relative rotation of a cardan shaft strand 2 in the vehicle part 20 of the turntables 4, 5 against each other a cardan shaft train 3 in the vehicle part 30 over the center of the pivot bearing while at the same time contractable. For this purpose, the propeller shaft strand 2 of the driving 5 shortening is out and forms a chord in which the Ge ll tool part 20 in the region of its end in a position circle associated with radial hinges 11, 12. At Nickbe- § ger 8 stored, which is attached to the turntable 4 in the movements of the two vehicle parts 20,30 to each other, The embodiment shown is d. H. so with pivoting movements around a horizontal a radial bearing 8, which is about a horizontal transverse axis 18 transverse axis, pivoting movements about the horischwenkbar occurs and also at the same time still io zontal axles 16, 18, but this is only a small one is pivotable about a liartical axis. The vertical vertical movement of the joints 11, 12 causes these

'' Pivotability is important when the joint is very close to the corresponding pivot

The drive shafts 2 do not sit in the vertical vehicle axles 16, 18 while the corresponding longitudinal center plane lies, but rather the drive shafts 3.2 rela-setting of the differential 22 in the axis 21 from this 15 are tively long due to a lateral joint shaft section. This is in the area of the pivot bearing 'vertical longitudinal median plane is led out. The only low overall height for the implementation of the joint

J The drive shaft of the vehicle part 30 is required with its shaft

ί one end mounted in a radial bearing 6 which is in FIG. 2 are all components with the same reference number

Ürehkranz 5 is held. The radial bearing 6 is similar to that in FIG. 1 denotes from this illustration

; i illustrated embodiment a soiches, which 20 can be seen that it is in the pivot bearings with the

': around a horizontal transverse axis 16 opposite this turntable 4.5 around a KugeJdrehlager with balls

Turntable 5 is pivotable acts The connection of the cardan shaft strands 2 and 3

between the radial bearings 6 and 8 takes place by means of a 2 sheets of drawings

Cardan shaft i, with a sliding piece 10 for the Length compensation is provided. When the articulated bus is in the extended position (FIG. 1), the cardan shaft 1 runs approximately through the center of the pivot bearing. in the The embodiment of FIG. 1 is the cardan shaft 1 - < and the cardan shaft train 2 equipped with simple universal joints 11, 12, 23 on both sides In a preferred embodiment, instead of the simple universal joints 11, 12, 23, constant velocity joints are used (homokinetic joints (13,14,24) provided (compare Fig. 3)). The joints of the cardan shaft 1, equal whether they are simple universal joints or constant velocity joints are valid, are preferably on arranged in a concentric circle with respect to the slewing rings 4, 5 This ensures that the entire articulation angle to be bridged in the joint lenstrang is evenly divided between the two joints of the cardan shaft.

A further improvement of the entire cardan shaft drive is achieved if a one on the slewing ring 5 ; arranged radial bearing 6 following support bearings 7 in

Vehicle part 30 can also be pivoted about a horizontal axis 17 the support bearing 7 and the radial bearing 6 has a length compensation, in the same way as the propeller shaft section between the radial bearing 8 and the Differential 22 of the drive axle 21 in the vehicle part 20. An embodiment of a horizontal one Axis pivotable radial bearing, as it can be used from bearings 6, 7 or 8, is shown in FIG. 4 in Section shown It should be in this camp with- « act, for example, about the bearing 7, so that the shaft is denoted by 3

The shaft 3 is mounted in a conventional roller bearing of an intermediate housing 27, which in turn can be pivoted on bearing journals 28 about a horizontal axis 17 in a bearing block 29 is mounted, which is fastened to the vehicle part 30. Between the bearing journals 28 and the corresponding bores in the housing 29, rubber bushings 26 are provided, which are used both for the bearing bore and are frictionally engaged with the bearing pin. The entire pivoting movement of the bearing 7 to the The horizontal axis 17 is thus accommodated by changing the shape of the rubber bushings 26.

Claims (3)

Forces when the vehicle buckles is kept low Patent claims: and, in addition, there is a vibration-insensitive bearing of the cardan shaft 1. Articulated vehicle, whose two vehicle parts around This task is made possible by the characteristics of the Anein Pivot bearing with two mutually rotatable 5 Proverb 1 solved This does not apply to the generic slewing rings with a vertical swivel axis moving articulated vehicle required between jebar are, with a turntable on the first track because of a radial bearing and the associated shaft tool part is attached, the second turntable in partially arranged joint; instead is the radial bearing Swivel bearings with a horizontal swivel axis on themselves about a horizontal axis opposite the zugedem second vehicle part is mounted, and swivel-mounted with egg io hearing turntable to also nem cardan shaft train, whose shaft parts in each case when pitching movements between the two vehicle parts Radial bearings are arranged on the turntables for the geometrically clean guidance of the shafts and to ensure this by means of a length compensation. between the radial bearings. Cardan It is already known (BE-PS 13 87 576) at are connected to the shaft, which means that a trailer with turntable steering is a through draws that at least one of the radial bearings whose slewing ring assembly guided propeller shaft in (6, 8) about a horizontal transverse axis (16 or 18) attached to one of the turntables so as to be pivotable to guide the associated slewing ring (4 or 5) th radial bearing in order to swivel in a joint can be saved, but the known arrangement extends 2. Articulated vehicle according to claim 1, characterized by the articulated shaft which the two shaft parts indicates that in the case of one of the vehicle connections to one another beyond the turntable, longitudinal center plane led out the shaft part so that this joint also serves as a drawbar joint for Associated radial bearing (8) about a vertical axis opposite the associated shaft, designed for example as a power take-off shaft the slewing ring (4) is designed to be pivotable. But this arrangement also has 3. Articulated vehicle according to claim 1 or 2, there- 25 again a shaft guided through a radial bearing, characterized in that the radial bearing (6,8) as which carries a heavy joint on both sides thereof Rubber torsion bearings are formed. and thus tends to vibrate significantly. The articulated vehicle according to the invention can The occurrence of vibrations 30 are reduced that the joints are each designed as constant velocity joints. The invention relates to an articulated vehicle according to preferred advantageous embodiments of the inventors The preamble of claim 1 can be found in claims 2 and 3. Such an articulated vehicle is available from the BE-PS. The drawings are used to provide exemplary embodiments 5 35 914 known and has two vehicle parts that explain the invention. In the drawing shows
by means of two against each other around a vertical axis F i g. 1 shows the floor plan of an articulated bus rotatable turntables are articulated with each other rich of its pivot bearing with the implementation of a bound. Through the area of the turntables, the steering shaft is shown in a schematic representation,
carried out a propeller shaft train. This joint F i g. 2 is a side view in the direction of the arrow shaft strand is formed from two shaft parts, from wel- 40 II of the arrangement from FIG. 1, Chen each is assigned to a vehicle part. and is guided in a radial bearing, which on the chend Fig. 1, but with constant velocity joints, The slewing ring belonging to the vehicle part is firmly attached and is. The two radial bearings are in turn by means of a FIG. 4 shows a section through a bearing accordingly Cardan shaft connected to the 45 IV-IV from F i g. 1.
shows. In the plan view according to FIG. 1 is a vehicle part In the known articulated vehicle, the driving radial bearing is denoted by 20 between that of an articulated bus and the associated shaft part in each case a tool part 20 has a driven axle 21 with a additional universal joint arranged, which is suitable differential 22 on. The second vehicle part of the joint network is, possibly non-movements between the two 50 omnibuses is with 30, an axis of this second driving vehicle parts balance. The fixed at the associated tool part with 31 designated. In the execution turntable shown attached radial bearings thus show the vehicle part 20 on the front two sides each have a heavy cardan joint, so that axially vehicle part of the articulated bus can be and an arrangement susceptible to vibrations is the vehicle part 30 of the trailer. In terms of forms is; Such vibrations are caused by cyclical training described below However, changes in the peripheral speed of parts do not, rather it does not matter which of the of the propeller shaft train due to the action of the two vehicle parts 20, 30 the front and which Cardan joints induced. is the rear part of the vehicle. The vehicle parts 20, 30 It has also been shown that with this cardan shaft are connected by means of a pivot bearing, which has an internal leadthrough by the die bearing already with the usual, eo ren turntable 4, which befe between the vehicle part 20 the two vehicle parts occurring is Stigt, and an outer turntable 5, which is with bearing articulation angles high threshold forces occur, which on pin 35 in corresponding bearing bores 36 of the the length of time the joints have not grown. Vehicle part 30 is stored. The two turntables 4, The object of the present invention is therefore that the 5 are against each other, preferably via rolling elements Known articulated vehicle mentioned at the outset, in particular about an axis of rotation perpendicular to the plane of the drawing an articulated bus that can be swiveled further. The outer turntable 5 is around a form that through a geometrically flawless line perpendicular to the last-mentioned axis swiveling steering leadthrough The axis occurring in the bearing bores 36 can be pivoted via the slewing ring. About the