DE2939359A1 - TRAILER WITH AN AXLE GUIDED ON LENGTH ARM - Google Patents

Description

Patent attorneys

DIPL.-ing.ALEX STENGER

Kaiser-Friedrich-Ring 70 3 DIPL.-ING. WOLFRAM WATZKE

D -4000 DÜSSELDORF 11 DIPL.-ING. HEIN

Our times: 20 44 ^ Date: September 2, 1979

Bergische axis factory Fr. Kotz & Sons, Am Ohlerhatnrner, 51.76 Wiehl 1

Trailer with an axle guided on trailing arms

The invention relates to a trailer with one guided on trailing arms Axle, with the trailing arms hinged to the chassis-fixed consoles located at the front in the direction of travel and resiliently counteracting them the chassis are supported.

Trailer with an axle construction of the one described above Type are known in various embodiments, for example as rubber or torsion bar axle. These axle constructions have the disadvantage that the trailer, for example a caravan, when rolling around its longitudinal axis and when lateral forces occur oversteers when cornering. Carriages with these known axle constructions have a relatively low critical Driving speed at which the trailer begins to rock and roll.

Proceeding from this, the invention is based on the object of creating a trailer with an axle construction which, when rolling of the superstructure around the longitudinal axis and understeer when side forces occur when cornering, so that the vehicle runs correctly behind to reach the towing vehicle.

To solve this problem, it is proposed to use the axis as a torsion crank axis train and support with struts and a Panhard rod on the chassis, the compression and rebound angle so arranged and limited by stops in the struts that the axle beam in the plane of the trailing arm is also in the fully rebounded position is still above the articulation points for the trailing arm.

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Telephone (02II) 57 21 31 ■ Telex: es M 4 »■ Telegram address: Rheinpattnt - Postscheckkonto KoIb (SLZ 370100 SO) 227« 10- 503

In a practical embodiment, the suspension struts, oie in a manner known per se, consist of helical springs and integrated, hydraulic vibration dampers with a tension and pressure stop, hinged to the rear linden of the trailing arm and under a V /:
be inclined.

under an angle of about ~ jO E ^e £ ^{en ü} i ^e vertical to the rear

Furthermore, it has proven expedient to wear the Panhard staff the back of the axle beam unct in the vertical projection seen approximately parallel to the AchStCbodytr but under one Angle of about 5 ° upwards to the chassis side To guide the articulation point.

According to a further feature of the invention, the axle beam can be made from a downwardly open, U-shaped profile bar exist, and through Recesses of the trailing arm and be firmly connected to these. In this version and attachment, the axle beam is called Stabilizer made usable.

A trailer with the axle construction designed according to the invention has the advantage that it understeers when rolling around the longitudinal axis and when lateral forces occur when cornering. That Understeering when cornering leads to a directional stability behind the towing vehicle. At the same time, the tendency to slide is counteracted. This results in a large positive amount of damping for the pendulum movement, an initiated pendulum movement sounds relatively quickly. Therefore, the critical driving speed is at which the trailer begins to swing, much higher than with the known axle constructions. This results in a improved driving safety.

Further details, features and advantages of the subject matter of the invention emerge from the following description of the associated Drawings showing a preferred embodiment of a axle construction designed according to the invention without the superstructures

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13001 S / 0437

of the trailer shown schematically in views and sections is. In the drawings show:

1 shows an axis traveling straight ahead in a plan view;

2 shows the same axis in a left curve in plan view;

3 shows the same axis according to FIG. 2 in a view from the rear;

4 shows the same axis when driving straight ahead in a side view;

Fig. 5 the same axis in fully compressed and rebounded Gegaid in side view;

6 shows an enlarged detail of the same axis in side view to illustrate the connection between the axle beam and trailing arms.

On an axle body 1, which consists of a downwardly open, in cross section U-shaped profile bar, U-shaped bridges 2 are also attached at the ends in cross-section, which the - in individual not shown - bearing knuckles and wheels 3. The axle body 1 is in one with its bridges 2 on each side Recess 4 of a Löngslenkers 5 and 6 attached, which consists of a Flexibly elastic flat steel are made. The front ends of the trailing arms 5 and 6 are hinged to brackets 7 and δ, the are in turn attached to the longitudinal spars 9 of the chassis.

At the rear end of the longitudinal links 5 and 6 are spring struts 10 hinged, which consist of a coil spring 11 and a shock absorber. The two struts 10 are at an angle of inclined back about 30 ° from the vertical and hinged to the longitudinal spars 9 of the chassis. The shock absorbers 12 have individual not shown - tension and pressure stops to limit the maximum compression and rebound angle oC or travel f,

130015/0437

A torque-free linkage of the struts .10 to the trailing arms 5 and c, additional support plates IJ are provided.

At aem axle body 1, a Panhard rod 14 is articulated, which in the Vertical projection parallel to the axis body running diagonally afterwards up to a longitudinal spar 9 and is also articulated there.

The Untersteuerun ^ seffekt wiro below anhund acr in Figures 2 unc y shown left curve Vl described:

On the right side of the trailer, i.e. on the outside of the curve, the spring strut is fully sprung, while on the left suite of the trailer, i.e. on the inside of the curve, it is fully rebounded, as is shown schematically in the side view of Figure 5 . As a result of the invention-specific order of the ijin- and Ausföerurigangels _: ^ C above the articulation point 15 for the trailing arms 5 and t on the consoles J and o the axle body 1 u: i the pivot point IC (Fir. 2) is pivoted, and ; was on the outside of the curve in a direction xv forwards and on the inside of the curve in the ilicntang xh backwards. The maximum amount x by which the body 1 on one side of the vehicle can be displaced forwards and backwards when cornering has been entered in the schematic representation of FIGS. 4 and 5. The dynamic wheel load changes during cornering thus cause Sehrägstellung of the axle body 1, the outer wheel 3 is pulled forward and uas inner curve Rau Z backwards. This self-steering of the axle body 1 when cornering leads to directional tracking behind the towing vehicle.

The above-described self-steering of the axle body 1 is superimposed by a movement component which the Panhard rod 14 generates. From the rear view shown in FIG. 3, it can be seen that the Panhard rod 14 pivots the axle body i when it is fully compressed and rebounded about a pivot point IJ and at the same time displaces it by a path y toward the outside of the curve. The

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Axle body 1 of the occurring side force ent ^ e ^ nturned, whereby a support _{takes place iii c} : erilenkunt.

All mentioned in the description and shown in the drawings new features are essential to the invention, even so far These are not expressly claimed in the claims.

130015/0437

Claims (1)

PATENTANWÄLTE 2939359 DIPL.-ing. ALEX STENGER Kaiser-Friedrich-Ring 70 DIPL.-ING. WOLFRAM WATZKE D-4000 DÜSSELDORF 11 DIPL.-ING. HEIN Z J. RING Our reference: 20 443 Date: September 26, 1979 Bergische axis factory Fr. Kotz & Sons, Am 0hlerhammer, 5276 Wiehl Claims 1. ^ trailer with an axle guided on trailing arms, the Trailing arm at the front in the direction of travel, fixed to the chassis Console are articulated and resiliently supported against the chassis, as characterized by that the axle is designed as a torsion crank axle and is supported on the chassis (9) with struts (10) and a Panhard rod (14) is, where the compression and rebound angles are arranged oCso and is limited by stops in the struts (10) that the axle body (1) in the plane of the trailing arm (5 * 6) also in the fully rebounded position still above the articulation points (15) for the trailing arm (5, 6). 2. Trailer according to claim 1, characterized in that the struts (10) are hinged to the rear ends of the trailing arms (5, 6). Trailer according to claims 1 and 2, characterized in that the spring struts (10) under a \
vertical tilted backwards. the suspension struts (10) at an angle of about 30 ° against the 4. Trailer according to claim 1, characterized in that the Panhard rod (14) hinged to the rear of the axle body (1) and, viewed in the vertical projection, approximately parallel to the axle body (1) but is guided at an angle of about 5 to the pivot point on the chassis. (1) but running upwards at an angle of about 5 ° to the 5 · Trailer according to claims 1 to 4, characterized in that the axle body (1) consists of a downwardly open, U-shaped profile - 2 130015/0437 Telephone (0211) S72131 · Telex: SS «« M ■ Telesrammidres · «: Rheinpatent · Postal check account KdIn (BLZ 37010050) 227 * 10-303 ORIGINAL INSPECTED stab exists. 6. Trailer according to claims 1 to 5, characterized in that the axle beam (1) through recesses (4) of the trailing arm (5, 6) and is firmly connected to these. 7. Trailer according to claims 1 to 6, characterized in that the cut of the trailing arm (5, 6) made of flexible flat steel exists and corresponds approximately to a triangle, at the base of which the articulation points for the chassis-fixed consoles (J, 8) and the struts (10) lie. ST / dg 130015/0437