Hydraulic circuit for construction equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 5, 2016
Grant Date -
Mar 27, 2014
app pub date -
Sep 2, 2010
filing date -
Sep 2, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hydraulic circuit for construction equipment is provided, which supplements hydraulic fluid of a hydraulic pump for a cooling fan and hydraulic fluid of a main hydraulic pump and uses the supplemented hydraulic fluid as a hydraulic source of a RCV in order to supply signal pressure to a control valve that controls the driving of a hydraulic actuator. The hydraulic circuit includes first to third hydraulic pumps, a first control valve installed in a flow path of the first flow path, a second control valve installed in a flow path of the second hydraulic flow path, a hydraulic motor connected to the third hydraulic pump, a cooling fan connected to the hydraulic motor, a first shuttle valve having an input portion connected to the first hydraulic pump and the third hydraulic pump, a second shuttle valve having an input portion connected to the second hydraulic pump and the third hydraulic pump, and a pilot pressure generation device installed in a pilot flow path connected to the output portions of the first and second shuttle valves and shifted to supply the hydraulic fluid having a relatively high pressure among the hydraulic fluids of the first to third hydraulic pumps to the first and second control valves as pilot signal pressure.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully