STEERING SYSTEM

摘要

Road and marine steering means in an amphibious vehicle are linked so that the ratio between them is variable. In a first embodiment, arm (64) connects lever (56) to steering rack (36). Cable (48) operates marine steering means (28). Lever (56) pivots about pin (60), which may be moved along slot (58) by motor (70) and gearbox (72) driving screw shaft (74). At pin position A, full road steering travel x is achieved with minimal marine steering travel. At pin position B, road and marine steering have equal travel x' ; and at position C, full marine steering travel z is achieved with minimal road steering travel y. In a further embodiment, lever arm (256) fixed to steering rack casing (226) has cam profile 258 constraining pin (260). Full marine steering travel z of cable (248) is achieved over rack travel y. Steering wheel (30) controls both road and marine steering.