JPS6332405B2 - - Google Patents
Info
- Publication number
- JPS6332405B2 JPS6332405B2 JP55500931A JP50093180A JPS6332405B2 JP S6332405 B2 JPS6332405 B2 JP S6332405B2 JP 55500931 A JP55500931 A JP 55500931A JP 50093180 A JP50093180 A JP 50093180A JP S6332405 B2 JPS6332405 B2 JP S6332405B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- control
- spool
- actuator
- pump
- 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
Links
- 239000012530 fluid Substances 0.000 description 32
- 230000007246 mechanism Effects 0.000 description 24
- 238000004891 communication Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 10
- 230000007935 neutral effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- BDEDPKFUFGCVCJ-UHFFFAOYSA-N 3,6-dihydroxy-8,8-dimethyl-1-oxo-3,4,7,9-tetrahydrocyclopenta[h]isochromene-5-carbaldehyde Chemical compound O=C1OC(O)CC(C(C=O)=C2O)=C1C1=C2CC(C)(C)C1 BDEDPKFUFGCVCJ-UHFFFAOYSA-N 0.000 description 1
- 241001236644 Lavinia Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/1006—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor
- A01B63/1013—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor and being located inside the tractor body
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
- A01B63/1117—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a hitch position sensor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7915993 | 1979-05-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56500480A JPS56500480A (cg-RX-API-DMAC10.html) | 1981-04-16 |
| JPS6332405B2 true JPS6332405B2 (cg-RX-API-DMAC10.html) | 1988-06-29 |
Family
ID=10505026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55500931A Expired JPS6332405B2 (cg-RX-API-DMAC10.html) | 1979-05-09 | 1980-04-30 |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4492080A (cg-RX-API-DMAC10.html) |
| EP (1) | EP0037397B1 (cg-RX-API-DMAC10.html) |
| JP (1) | JPS6332405B2 (cg-RX-API-DMAC10.html) |
| BR (1) | BR8008865A (cg-RX-API-DMAC10.html) |
| DE (1) | DE3066245D1 (cg-RX-API-DMAC10.html) |
| ES (1) | ES8200202A1 (cg-RX-API-DMAC10.html) |
| FI (1) | FI70108C (cg-RX-API-DMAC10.html) |
| IN (1) | IN154910B (cg-RX-API-DMAC10.html) |
| IT (1) | IT1131166B (cg-RX-API-DMAC10.html) |
| MX (1) | MX150373A (cg-RX-API-DMAC10.html) |
| NO (1) | NO150781C (cg-RX-API-DMAC10.html) |
| WO (1) | WO1980002355A1 (cg-RX-API-DMAC10.html) |
| YU (1) | YU121780A (cg-RX-API-DMAC10.html) |
| ZA (1) | ZA802501B (cg-RX-API-DMAC10.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4949805A (en) * | 1988-07-27 | 1990-08-21 | Clark Equipment Company | Electrically controlled auxiliary hydraulic system for a skid steer loader |
| US6293077B1 (en) | 2000-05-02 | 2001-09-25 | Mtd Products Inc | Deck attachment and lift system |
| CN104343755B (zh) * | 2014-10-28 | 2016-08-31 | 广西柳工机械股份有限公司 | 液控随动阀及负载敏感模拟阀 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB813204A (en) * | 1956-10-29 | 1959-05-13 | Ford Motor Co | Improved hydraulic system for tractors |
| US2316926A (en) * | 1941-03-11 | 1943-04-20 | Vickers Inc | Power transmission |
| US2600702A (en) * | 1945-11-29 | 1952-06-17 | William T Stephens | Control valve |
| GB741804A (en) * | 1950-03-15 | 1955-12-14 | Ferguson Harry Inc | Improvements relating to hydraulic power lift systems for tractors |
| GB747488A (en) * | 1953-02-18 | 1956-04-04 | Massey Harris Ferguson Ltd | Improvements in or relating to hydraulic control systems especially for tractor-actuated implements |
| US2888805A (en) * | 1953-02-18 | 1959-06-02 | Massey Harris Ferguson Ltd | Hydraulic systems for tractors |
| GB839689A (en) * | 1955-08-31 | 1960-06-29 | Massey Harris Ferguson Inc | Improvements relating to a control mechanism for a tractor hydraulic system |
| US3048981A (en) * | 1959-05-21 | 1962-08-14 | Massey Ferguson Inc | Control mechanism for tractor hydraulic systems |
| US3239012A (en) * | 1960-08-26 | 1966-03-08 | Massey Ferguson Inc | Hydraulic power unit and control system for tractors |
| US3171496A (en) * | 1961-12-04 | 1965-03-02 | Int Harvester Co | Hydraulic control system |
| GB1046622A (en) * | 1962-08-01 | 1966-10-26 | Massey Ferguson Inc | Control system for a tractor |
| GB1101775A (en) * | 1962-08-01 | 1968-01-31 | Massey Ferguson Inc | Improvements in or relating to tractor hydraulic control systems |
| GB1075449A (en) * | 1963-12-27 | 1967-07-12 | Massey Ferguson Inc | Improvements in or relating to tractors |
| BE662653A (cg-RX-API-DMAC10.html) * | 1964-04-17 | |||
| DE1805089C3 (de) * | 1968-10-25 | 1979-09-27 | Robert Bosch Gmbh, 7000 Stuttgart | Steuerventileinrichtung in Blockbauweise zum Versorgen mindestens zweier hydraulischer Servomotoren |
| GB1239281A (cg-RX-API-DMAC10.html) * | 1968-07-29 | 1971-07-14 | ||
| US3579986A (en) * | 1968-09-06 | 1971-05-25 | Hitachi Ltd | Device for controlling pumps for operating hydraulic motors equipment |
| US3534774A (en) * | 1968-11-14 | 1970-10-20 | Koehring Co | Pressure compensated control valve |
| US4256142A (en) * | 1979-08-20 | 1981-03-17 | Hancock Leonard H | Hydraulic control |
-
1980
- 1980-04-25 ZA ZA00802501A patent/ZA802501B/xx unknown
- 1980-04-30 EP EP80900776A patent/EP0037397B1/en not_active Expired
- 1980-04-30 BR BR8008865A patent/BR8008865A/pt not_active IP Right Cessation
- 1980-04-30 JP JP55500931A patent/JPS6332405B2/ja not_active Expired
- 1980-04-30 DE DE8080900776T patent/DE3066245D1/de not_active Expired
- 1980-04-30 FI FI801400A patent/FI70108C/fi not_active IP Right Cessation
- 1980-04-30 WO PCT/GB1980/000075 patent/WO1980002355A1/en not_active Ceased
- 1980-05-07 IN IN538/CAL/80A patent/IN154910B/en unknown
- 1980-05-07 ES ES491267A patent/ES8200202A1/es not_active Expired
- 1980-05-07 MX MX182220A patent/MX150373A/es unknown
- 1980-05-08 YU YU01217/80A patent/YU121780A/xx unknown
- 1980-05-09 IT IT21954/80A patent/IT1131166B/it active
-
1981
- 1981-01-06 NO NO810026A patent/NO150781C/no unknown
-
1984
- 1984-02-21 US US06/590,675 patent/US4492080A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| NO150781B (no) | 1984-09-10 |
| NO810026L (no) | 1981-01-06 |
| WO1980002355A1 (en) | 1980-11-13 |
| FI70108B (fi) | 1986-02-28 |
| ES491267A0 (es) | 1981-11-01 |
| ES8200202A1 (es) | 1981-11-01 |
| EP0037397B1 (en) | 1984-01-25 |
| FI801400A7 (fi) | 1980-11-10 |
| BR8008865A (pt) | 1981-08-11 |
| IN154910B (cg-RX-API-DMAC10.html) | 1984-12-22 |
| FI70108C (fi) | 1986-09-15 |
| US4492080A (en) | 1985-01-08 |
| ZA802501B (en) | 1981-04-29 |
| IT1131166B (it) | 1986-06-18 |
| IT8021954A0 (it) | 1980-05-09 |
| DE3066245D1 (en) | 1984-03-01 |
| JPS56500480A (cg-RX-API-DMAC10.html) | 1981-04-16 |
| YU121780A (en) | 1983-04-30 |
| NO150781C (no) | 1984-12-19 |
| MX150373A (es) | 1984-04-25 |
| EP0037397A1 (en) | 1981-10-14 |
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