CN1072322C - 操作信号传感装置 - Google Patents
操作信号传感装置 Download PDFInfo
- Publication number
- CN1072322C CN1072322C CN95108980A CN95108980A CN1072322C CN 1072322 C CN1072322 C CN 1072322C CN 95108980 A CN95108980 A CN 95108980A CN 95108980 A CN95108980 A CN 95108980A CN 1072322 C CN1072322 C CN 1072322C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- actuator
- auxiliary valves
- signal sensor
- operating signal
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/167—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load using pilot pressure to sense the demand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/355—Pilot pressure control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/67—Methods for controlling pilot pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/857—Monitoring of fluid pressure systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
1 | 101a、101b全处于中间时 | PA=0、PB=0 |
2 | 101a单独操作时 | PA=1、PB=0 |
3 | 101b单独操作时 | PA=1、PB=1 |
4 | 101a、101b复合操作时 | PA=1、PB=1 |
1 | 1a、1b全处于中间时 | PS=P1、PD=0 |
2 | 1a单独操作时 | PS=P2、PD=0 |
3 | 1b单独操作时 | PS=P3、PD=P4 |
4 | 1a、1b复合操作时 | PS=P5、PD=P6 |
Claims (7)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR28043/1994 | 1994-10-29 | ||
KR28043/94 | 1994-10-29 | ||
KR1019940028043A KR100212646B1 (ko) | 1994-10-29 | 1994-10-29 | 액츄에이터 조작신호 감지장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1122416A CN1122416A (zh) | 1996-05-15 |
CN1072322C true CN1072322C (zh) | 2001-10-03 |
Family
ID=19396445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN95108980A Expired - Fee Related CN1072322C (zh) | 1994-10-29 | 1995-07-19 | 操作信号传感装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5579677A (zh) |
EP (1) | EP0709578B1 (zh) |
JP (1) | JP2972555B2 (zh) |
KR (1) | KR100212646B1 (zh) |
CN (1) | CN1072322C (zh) |
DE (1) | DE69519556T2 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018127830A1 (de) * | 2018-11-07 | 2020-05-07 | Liebherr-Aerospace Lindenberg Gmbh | Elektro-hydrostatisches Betätigungssystem |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4067193A (en) * | 1976-11-22 | 1978-01-10 | Caterpillar Tractor Co. | Combined hydrostatic transmission implement system |
EP0309987A1 (en) * | 1987-09-29 | 1989-04-05 | Shin Caterpillar Mitsubishi Ltd. | Fluid pressure control system |
EP0393195A1 (en) * | 1988-06-17 | 1990-10-24 | Kabushiki Kaisha Kobe Seiko Sho | Fluid control mechanism for power shovels |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3520231A (en) * | 1968-10-23 | 1970-07-14 | Gen Signal Corp | Hydraulic supply systems with flow rate-limiting control |
JPS61116103A (ja) * | 1984-11-09 | 1986-06-03 | Japan Steel Works Ltd:The | 2速合流回路 |
EP0572678B1 (en) * | 1991-12-24 | 1997-03-12 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving apparatus for construction machines |
-
1994
- 1994-10-29 KR KR1019940028043A patent/KR100212646B1/ko not_active IP Right Cessation
-
1995
- 1995-06-30 US US08/497,668 patent/US5579677A/en not_active Expired - Fee Related
- 1995-06-30 JP JP7188371A patent/JP2972555B2/ja not_active Expired - Fee Related
- 1995-07-11 DE DE69519556T patent/DE69519556T2/de not_active Expired - Fee Related
- 1995-07-11 EP EP95630079A patent/EP0709578B1/en not_active Expired - Lifetime
- 1995-07-19 CN CN95108980A patent/CN1072322C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4067193A (en) * | 1976-11-22 | 1978-01-10 | Caterpillar Tractor Co. | Combined hydrostatic transmission implement system |
EP0309987A1 (en) * | 1987-09-29 | 1989-04-05 | Shin Caterpillar Mitsubishi Ltd. | Fluid pressure control system |
EP0393195A1 (en) * | 1988-06-17 | 1990-10-24 | Kabushiki Kaisha Kobe Seiko Sho | Fluid control mechanism for power shovels |
Also Published As
Publication number | Publication date |
---|---|
JP2972555B2 (ja) | 1999-11-08 |
US5579677A (en) | 1996-12-03 |
EP0709578A3 (en) | 1998-06-17 |
DE69519556D1 (de) | 2001-01-11 |
DE69519556T2 (de) | 2001-04-05 |
CN1122416A (zh) | 1996-05-15 |
JPH08128408A (ja) | 1996-05-21 |
EP0709578A2 (en) | 1996-05-01 |
EP0709578B1 (en) | 2000-12-06 |
KR100212646B1 (ko) | 1999-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C53 | Correction of patent for invention or patent application | ||
CB02 | Change of applicant information |
Applicant after: Volvo Construction Equipment (Korea) Co., Ltd. Applicant before: Samsung Heavy Industries Co., Ltd. |
|
COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SAMSUNG HEAVY INDUSTRIES (CO.) TO: AB VOLVO MANUFACTURING EQUIPMENT (HANGUO) CO., LTD. |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: AB VOLVO BUILDING EQUIPMENT SWEDEN HOLDING CO., L Free format text: FORMER OWNER: AB VOLVO MANUFACTURING EQUIPMENT (HANGUO) CO., LTD. Effective date: 20020204 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20020204 Address after: Swedish Eskil steynor Patentee after: Volvo construction equipment Sweden Holding Co Address before: Seoul Patentee before: Volvo Construction Equipment (Korea) Co., Ltd. |
|
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |