초록 ▼

A method and a support arrangement to steer a roller vehicle by a roller mat, which vehicle has an essentially rigid body part supporting the frame and the power engine with transmission means thereof to transmit power to a curved form turnable roller mat, whereby one side of the roller mat is short

A method and a support arrangement to steer a roller vehicle by a roller mat, which vehicle has an essentially rigid body part supporting the frame and the power engine with transmission means thereof to transmit power to a curved form turnable roller mat, whereby one side of the roller mat is shortened and the other side thereof is correspondingly lengthened. According to the invention, when the roller mat is being turned to a curved form the vehicle is tilted and its center of gravity is transferred to the side of the tilt in regard to the longitudinal axis of the vehicle. The support arrangement extends essentially the whole length of the body part, is suspended to the body part and comprises a separate, twistable, i.e. bendable or foldable, auxiliary body part supported to the support arrangement at two points on the center line of the vehicle, to which body the roller wheel assembly of the roller mat has been suspended nontransferably in regard to the auxiliary body, and which body is provided with means connected to the steering devices of the vehicle to twist the auxiliary body and thus to steer the vehicle.

대표청구항 ▼

A support arrangement in a roller vehicle for steering thereof, including: a turnover roller mat 4; a rigid body part 1 for supporting a power engine 2 and transmission means 3 for transmitting a driving force directly to an outer periphery of said roller mat 4 movable around a turnable wheel assemb

A support arrangement in a roller vehicle for steering thereof, including: a turnover roller mat 4; a rigid body part 1 for supporting a power engine 2 and transmission means 3 for transmitting a driving force directly to an outer periphery of said roller mat 4 movable around a turnable wheel assembly 6, 7 under said rigid body part 1; a support arrangement 5 extending the whole length of said body part 1 and suspended therefrom, said support arrangement including a separate, twistable auxiliary body 5, 5′supported by said body part 1 at two points on a center line of said vehicle; said roller wheel assembly 6, 7 being suspended by said auxiliary body 5, 5′; said auxiliary body being provided with means 8, 9 connected to steering means for said vehicle for twisting said auxiliary body 5, 5′for steering said vehicle; said auxiliary body including two flexible, telescopically lengthening rod means, the length of said rod means being at a minimum extent when said auxiliary body is in a unfolded balance state; said auxiliary body 5, 5′being connected to said body part 1 by several parallel and spaced downwardly directed support rods 52 transverse to a longitudinal axis of said vehicle passing through a center of gravity of said vehicle defining a longitudinal center line thereof, each of said rods being supported to maintain the transverse position thereof at three points to the body part 1; said auxiliary body 5, 5′being suspended to each support rod 52 by at least two thrust bearings 53, so that when said auxiliary body 5′is twisted it can move on said thrust bearings 53 along said transverse support rods 52, whereby on one side of said roller mat 4, the distance between said roller wheels 6, 7 and said body part 1 is shorter and on the other side of said roller mat 4 the distance between the roller wheels 6, 7 and the body part 1 becomes correspondingly longer, so that the roller mat 4 is displaced from a direct driving position to a curved driving position, at the same time when the center of gravity of the vehicle transfers from a side towards which said vehicle tilts on one side of the longitudinal center line of the vehicle to a side on the other side of the longitudinal center line of said vehicle, whereat said roller mat 4 is closer to said body part 1.