JPS6479401A - Hydraulic driving device for load sensing control - Google Patents
Hydraulic driving device for load sensing controlInfo
- Publication number
- JPS6479401A JPS6479401A JP23647287A JP23647287A JPS6479401A JP S6479401 A JPS6479401 A JP S6479401A JP 23647287 A JP23647287 A JP 23647287A JP 23647287 A JP23647287 A JP 23647287A JP S6479401 A JPS6479401 A JP S6479401A
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- valve
- room
- pressure
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE:To perform the non-saturation control of a discharge flow amount by introducing the control pressure at a poppet valve into one pilot room of a pressure compensation valve, and the maximum load pressure at an actuator and the inlet pressure at a pilot valve into the other pilot room. CONSTITUTION:A pressure compensation valve 8a is connected to a pilot line 17a in the position between the pilot port 15a of a poppet valve 11a and a pilot valve 12a. This pressure compensation valve 8a has the first pilot rooms 31a and the second pilot room 32a, which oppose to each other, on its both sides. One pilot room 36a of the first pilot rooms 31a is connected to the pilot line 17a at the inlet side of the pilot valve 12a, and the other pilot room 37a is connected to the maximum load pressure line 29 of an actuator. And the second pilot room 32a is connected to the pilot line 17a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62236472A JP2542005B2 (en) | 1987-09-21 | 1987-09-21 | Road sensing control hydraulic drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62236472A JP2542005B2 (en) | 1987-09-21 | 1987-09-21 | Road sensing control hydraulic drive |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6479401A true JPS6479401A (en) | 1989-03-24 |
JP2542005B2 JP2542005B2 (en) | 1996-10-09 |
Family
ID=17001245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62236472A Expired - Fee Related JP2542005B2 (en) | 1987-09-21 | 1987-09-21 | Road sensing control hydraulic drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2542005B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991002902A1 (en) * | 1989-08-16 | 1991-03-07 | Hitachi Construction Machinery Co., Ltd. | Valve device and hydraulic circuit device |
JP2005315350A (en) * | 2004-04-28 | 2005-11-10 | Hitachi Constr Mach Co Ltd | Control valve device and pressure circuit |
-
1987
- 1987-09-21 JP JP62236472A patent/JP2542005B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991002902A1 (en) * | 1989-08-16 | 1991-03-07 | Hitachi Construction Machinery Co., Ltd. | Valve device and hydraulic circuit device |
JP2005315350A (en) * | 2004-04-28 | 2005-11-10 | Hitachi Constr Mach Co Ltd | Control valve device and pressure circuit |
Also Published As
Publication number | Publication date |
---|---|
JP2542005B2 (en) | 1996-10-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |