Hydrostatic drive for vehicles

Details Hydrostatic drive for vehicles Hydrostatic drive for vehicles

1983-04-20

1985-07-16

Krizmanich, George H.

Machine element or mechanism

Gearing

With fluid drive

180243, 180242, F16H 4700

Patent

active

045288712

ABSTRACT:
The invention provides a hydrostatic drive for vehicles, especially for the drive wheels of automotive heavy processing machines that have a drive for main drive wheels via a multispeed gear transmission and a drive for auxiliary drive wheels, wherein the drives for both the auxiliary drive wheels and the main drive wheels are hydrostatic. These hydrostatic drives each comprise an adjustable pump and an adjustable motor. A multispeed gear transmission is provided between the main drive motor and the main drive wheels and a clutch is provided between the adjustable motor and the auxiliary drive wheels. To obtain a higher travel speed, it is possible to disconnect the auxiliary drive and to switch, via a changeover valve, the delivery of the adjustable pump from the auxiliary drive to the main drive. Thereby is obtained the advantage that through the same control of both main and auxiliary drive wheels there is ensured a functional interplay of the drives. By switching the delivery of the adjustable pump of the auxiliary drive to the main drive, the working capacity of the vehicle's main drive engine is optimally utilized, since the operation of the auxiliary drive wheels at high travelling speed is not used and the drive of the main drive wheels is correspondingly reinforced.

REFERENCES:
patent: 3053043 (1962-09-01), Knowler
patent: 3561557 (1971-02-01), Magnuson et al.
patent: 3736732 (1973-06-01), Jennings et al.
patent: 3918546 (1975-11-01), Chichester et al.
patent: 3952511 (1976-04-01), Turner et al.
patent: 3978937 (1976-09-01), Chichester et al.
patent: 4186816 (1980-02-01), Pfundstein
patent: 4341133 (1982-07-01), Sakamoto
patent: 4396087 (1983-08-01), Rock et al.

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