CONTROL DEVICE FOR HYDRAULIC PUMP
PROBLEM TO BE SOLVED: To actualize the control of a two flow-way pump and a tandem pump only by making a small change to the configuration of a hydraulic circuit having a simplex pump. SOLUTION: A pressure reducing valve 5 is provided for pressure air feeding pipelines 4 (41 and 42), out of the pres...
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Main Author | |
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Format | Patent |
Language | English |
Published |
08.02.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To actualize the control of a two flow-way pump and a tandem pump only by making a small change to the configuration of a hydraulic circuit having a simplex pump. SOLUTION: A pressure reducing valve 5 is provided for pressure air feeding pipelines 4 (41 and 42), out of the pressure reduction valve 5, pressure oil PE indicating pressure (P1+P2)/2 (average pressure of P1 and P2) higher than the minimum pressure out of respective pressures P1 and P2 discharged out of the respective discharging ports 1b and 1c of a hydraulic pump 1, is inputted to a PC valve 19 as driving pressure oil by way of a branch pipeline 45, and concurrently, it is also inputted as pilot pressure oil by way of a branch pipeline 4e. |
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Bibliography: | Application Number: JP19980205134 |