Steering device of crawler type vehicle

Details Steering device of crawler type vehicle Steering device of crawler type vehicle

1992-08-27

1994-02-15

Mitchell, David M.

Motor vehicles

Steering by driving

Auxiliary steering motor

180 67, 180333, 74471XY, B62D 1110

Patent

active

052858618

ABSTRACT:
When a lever (48) is rocked either rightwardly or leftwardly while the lever (48) is rocked forwardly and the vehicle is moving forwardly, the vehicle is steered in the direction in which lever (48) is rocked. When the lever (48) is rocked either rightwardly or leftwardly while the lever (48) is rocked backwardly and the vehicle is moving backwardly, the vehicle is steered in the direction in which lever (48) is rocked. For the above operation, a valve body (44) comprising a pilot valve (420) and a change valve (421) is coupled to the lever (48). The lever (48) is rocked rightwardly or leftwardly, and pressure oil supplied through the pilot valve (420) actuates a rotary direction changing valve (25). When the lever (48) is rocked backwardly, the change valve (421) switches the direction in which the pressure oil is supplied through the pilot valve (420) to the reverse direction.

REFERENCES:
patent: 3717212 (1973-02-01), Potter
patent: 4076090 (1978-02-01), Krusche et al.
patent: 4174762 (1979-11-01), Hopkins et al.
patent: 4541497 (1985-09-01), Riediger et al.
patent: 4700794 (1987-10-01), Bernhagen et al.
patent: 4736646 (1988-04-01), Shimoie et al.
patent: 5184646 (1993-02-01), Hori et al.

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