Hydrostatic drive system

Details Hydrostatic drive system Hydrostatic drive system

1995-05-25

1996-10-08

Lopez, F. Daniel

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

91526, 91531, 91446, 60422, F15B 11042

Patent

active

055620191

ABSTRACT:
A hydrostatic drive system including a pump (1) and consumers (6, 8) which can each be actuated by a directional control valve (5,7) is disclosed. Each directional control valve (5, 7) is assigned a pressure compensator (9, 10) which can be controlled by a signal difference formed from a load pressure signal and a delivered pressure signal. The load pressure signal is derived from the highest of the load pressures occurring downstream of the directional control valves (5, 7), and the delivered pressure signal is derived from the pressure upstream of the directional control valves (5, 7). To limit the driving force and driving moment of at least one of the consumers, the signal difference across the pressure compensator (9) of at least one consumer (6) can be influenced by a controllable pressure output signal of an infinitely variable pressure control valve in such a way as to adjustably limit through-flow across the pressure compensator.

REFERENCES:
patent: 4665699 (1987-05-01), Krusche
patent: 4938023 (1990-07-01), Yoshino
patent: 5063742 (1991-11-01), Yoshimatsu
patent: 5134853 (1992-08-01), Hirata et al.
patent: 5209063 (1993-05-01), Shirai et al.

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