Land vehicles – Wheeled – Articulated vehicle
Patent
1991-02-27
1992-12-29
Hill, Mitchell J.
Land vehicles
Wheeled
Articulated vehicle
180134, 180135, 180139, 180235, 2804461, 280492, B60D 132, B62D 5304
Patent
active
051745976
ABSTRACT:
An articulation damping device having a hydraulic piston-cylinder unit 2, connected pivotally at 5 to a front vehicle 3 at a distance y from the longitudinal median plane and on the other side and symmetrically thereto and also at the distance y from the longitudinal median plane a hydraulic piston-cylinder unit 19, is also pivotally connected at 5'. At their other ends the two units 2, and 19, 19' are connected to the outer part 1' of the turntable joint at pivot 4 located in the longitudinal median plane. In this position of the piston-cylinder units the vehicles of the articulated omnibus are aligned in an in-line position for running straight ahead. Dimension x deontes the distance of the points 5 and 5' of articulation from the pivot 4 in the longitudinal median plane. The dimension b.sub.min represents the inner dead center position of the piston-cylinder unit 2, dimension a denotes the radius of the turntable joint, .beta. denotes the articulation angle between the front vehicle 3 and the rear vehicle 6. The angle .gamma. is the angle between a line extending from the point 5 or 5' to the center point of the turntable joint. If the rear vehicle 6 is swung to the left (clockwise) the hydraulic piston-cylinder units 2, and 19, 19' pivot counterclockwise around respective pivots 5, the stroke of the unit 2, being decreased up to point A and the stroke of the unit 19, being increased up to point A by equal amounts. At positions past A there is an addition of the damping moments of the units 2 and 19.
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Hill Mitchell J.
MAN Nutzfahrzeuge A.G.
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