Title:
OIL-HYDRAULIC CIRCUIT HAVING LARGE FLOW ACTUATOR
Document Type and Number:
Japanese Patent JP3669068
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To drive a small flow actuator stably even when a large flow actuator is driven in an oil hydraulic circuit having the large flow actuator and the small flow actuator.
SOLUTION: A check valve 12 and a first accumulator 13 are provided to a feed-side line 11A of a small flow actuator 9, and a check valve 14 and a second accumulator 15 are provided to a return-side line 11B. When a large flow actuator 1 is driven, a pressure oil flow of the feed-side line 11A tends to decrease. However, the check valve 12 prevents the pressure oil from decreasing, and the pressure oil is supplied to the small flow actuator 9 by the first accumulator 13. Further, the check valve 14 prevents the pressure oil from flowing to the return-side line 11B. Accordingly, the small flow actuator 9 is driven stably.
Inventors:
Horikawa, Jun
Application Number:
JP1996000228801
Publication Date:
April 22, 2005
Filing Date:
August 29, 1996
Export Citation:
Assignee:
SHIMADZU CORP
International Classes:
G01M7/02; F15B11/02; F15B11/16; G01M7/00; F15B11/00; (IPC1-7): F15B11/16; G01M7/02