DEVICE FOR CONTROLLING INTERCEPTION OF HIGH SPEED RANGE AND BACKING RANGE

摘要

1496616 Hydrostatic transmission control; linkwork INTERNATIONAL HARVESTER CO 14 April 1976 [23 June 1975] 15279/76 Headings F2W and F2K A hydrostatic transmission control linkage in a vehicle which prevents reverse movement of the vehicle in a high speed range comprises a valve spool 22 movable by a lever 10 through linkwork 14, 16, 20 to select forward, neutral or reverse, a lever 26 which pivots a link 42 to select a high speed range (position H) or a low speed range (position L) and a plate 46 pivoted by a rod 44 when lever 26 is moved, the link 20, connected to valve spool 22, having a projection 18 which abuts plate 46 to prevent engagement reverse when the vehicle is in a high speed range and also, when the vehicle is in reverse, prevents selection of the high speed range. The vehicle may be an industrial or agricultural tractor, a loader, a scraper or an earth mover.