摘要:
A method of controlling a transport means (1) comprising a body (2) and wheels (3a to 3h) attached to the body (2) on both sides of its central line one after another in the longitudinal direction of the body, all the wheels (3a to 3h) being arranged to turn about vertical axes (4a to 4h) of turning to change the direction of travel of the transport means (1) so that rotation axes (11a to 11h) for all the wheels (3a to 3h) intersect substantially at the same vertical axis of turning (9) so that the position of the axis of turning in the longitudinal direction of the transport means (1) is shifted in proportion to the magnitude of the an angle of turning (.alpha.); and a transport means (1). To avoid an unexpected obstacle (10) the turning of the wheels (3a to 3h) is deviated from their normal path by shifting the axis of turning (9) in the longitudinal direction of the transport means (1) towards its forward end, so that the rear end moves with a larger curved movement than usually. When the driving conditions are normalized, the axis (9) of turning is returned to its normal position.
摘要:
A transport means (1) comprising a body (2) and several wheels (3a to 3h) positioned in the longitudinal direction one after another on both sides of the body and turnable about vertical axes (4a to 4h). The transport means (1) is supported at one end turnably by means of a tractor means (6) by means of which the direction of travel of the transport means (1) is controlled. In order that the transport means could be controlled more easily, a control sensor (7) is mounted in a swing joint (5) connecting the transport means (1) to the tractor means (6), which control sensor indicates the angle (.alpha.) of turning between the tractor means (6) and the transport means (1), whereby the sensor (7) together with an adjusting means (8) controls the turning of the wheels (3a to 3h) in proportion to the angle (.alpha.) of turning. When the angle (.alpha.) of turning is, e.g., no more than 20.degree., the adjusting means (8) controls the wheels (3a to 3h) so that they turn in such a way that the transport means (1) turns about a center (9) of turning positioned in the middle thereof in the longitudinal direction, whereby the turning radii at the front and rear end are substantially equal. When the angle (.alpha.) of turning exceeds 20.degree., the position of the center (9) of turning is shifted in the longitudinal direction of the transport means (1) in proportion to the value of the angle (.alpha.) of turning towards the rear end of the transport means (1), whereby in parking situations it behaves similarly as a conventional trailer, but the axes of all the wheels (3a to 3h) go through the center (9) of turning, whereby the wheels always rotate without sliding.