METHOD FOR FINE POSITIONING VEHICLES IN EXACT RELATIONSHIPS TO GEOGRAPHIC REFERENCE MARKINGS

摘要

Abstract:The present invention relates to a method for fine positioningvehicles in exact relationships to geograpic reference markings,whereby the vehicle (1) is adapted to fetch and deliver loads (2)preferably goods carried on loading stools or pallets, at fetchingand delivering points (3-14), whereby it is required that thevehicle (1) repeatedly may be brought to exact positions relativeto said fetching and delivering points (3-14) and whereby thevehicle (1) has at least one indicating and calculating device (24)for indicating the distance between two non-parallel lines (39-40)of the geograpic reference markings (36) for calculating whether thevehicle (1) is on one side or the other of a certain relationshipto a predetermined line (33 and/or 34) of direction of movement byindicating whether the distance measures between said lines (39, 40)of the reference marking is greater or smaller than the distancerepresenting said certain relationship to the predetermined line (33and/or 34) of direction of movement. In order to reach a quick finepositioning, the method is characterized by the fact that the vehicle(1), which by comprising separately operable driving wheels (15-18)with inclined ground contact means (19) is movable in optional direc-tions by activating each driving wheel (15-18), is operated todrive in sideways direction (A or B) directly to the predeterminedrelationship to the predetermined line (33 and/or 34) of direction of2.movement and on the fetching and delivering point to an exactfetching and delivering position if the indicating and calculatingdevice (24) indicates and calculates that the vehicle (1) is inrelationships deviating from its predetermined relationship tothe predetermined line (33 and/or 34) of direction of movement andon the retching and delivering point in positions departing fromthe fetching and delivering position (fig. 3).