Hydraulic drive system

Details Hydraulic drive system Hydraulic drive system

1992-01-06

1993-05-18

Look, Edward K.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

91532, 91459, F16H 3948

Patent

active

052110141

ABSTRACT:
A hydraulic drive system consists of a first partial system I and a second partial system II. Each partial system has a pump regulated by the stream required (1,9) and a hydraulic energy consumer connected to its output line (2,10). Load pressure lines (7,13) that sense the maximum load pressure are also provided in each partial system I and II; they are connected with the required flow regulators (8,14) of the pumps (1,9). A coupling device III is provided for connecting the feed lines (2,10) and the load pressure lines (7,13) of the two partial systems I and II. The coupling device III can be switched as a function of a consumer designed for driving and is connected with a circuit logic IV that supervises the driving of this consumer. The circuit logic consists of a NAND (not-and-) element (19) and an UND (and-) element (22).

REFERENCES:
patent: 3720059 (1973-03-01), Schurawski et al.
patent: 4461148 (1984-07-01), Krusche
patent: 4570441 (1986-02-01), Yoshida et al.
patent: 4768339 (1988-09-01), Aoyagi et al.
patent: 5052179 (1991-10-01), Fuji
patent: 5063739 (1991-11-01), Bianchetta et al.

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