GB1070392A - Device for damping the control members of a hydraulic power lift - Google Patents
Device for damping the control members of a hydraulic power liftInfo
- Publication number
- GB1070392A GB1070392A GB2357864A GB2357864A GB1070392A GB 1070392 A GB1070392 A GB 1070392A GB 2357864 A GB2357864 A GB 2357864A GB 2357864 A GB2357864 A GB 2357864A GB 1070392 A GB1070392 A GB 1070392A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- shut
- chamber
- conduit
- moved
- 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
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
- A01B63/111—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)
- Vehicle Body Suspensions (AREA)
Abstract
1,070,392. Tractor power lift mechanisms.. KLOCKNER - HUMBOLDT - DEUTZ A.G. June 8, 1964 [June 12, 1963], No. 23578/64. Heading A1P. A tractor power lift mechanism in which draft control signals operate, through an upper link 17, Fig. 1 (not shown), and a lever linkage 19, 21 and 25, a main control valve 28 surrounding a shut-off valve 34, is characterized in that the shut-off valve acts on a damping device. In the neutral position shown, the shut-off valve is held in position against its biasing spring by pressure fluid from conduit 4 entering chamber 33 so that the main pump pressure is delivered through a central bore 40 in the shut-off valve to the sump. For lifting the main control valve 28 is moved to the left to connect chamber 33 with an exhaust chamber 47 whereby the shut-off valve is moved by its spring to close the passage to sump. This movement is delayed. by piston 42 on the valve entering chamber 44 from which passage of fluid is throttled at gap 45. Build up of pressure in conduit 48 opens the check valve 49 to conduit 7 and the lifting ram. When the control valve is moved back to the position shown and pressure builds up in chamber 33, suction in chamber 44 also delays operation of the shut-off valve whose movements are therefore damped. For lowering, the control valve is moved to the right and bolt 50 opens valve 53 to connect conduit 7 to the sump. In an embodiment the chambers 33 and 44 are combined but have a throttled outlet and in another embodiment the piston of the shutoff valve throttles the outlet of these chambers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0049954 | 1963-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1070392A true GB1070392A (en) | 1967-06-01 |
Family
ID=7225429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2357864A Expired GB1070392A (en) | 1963-06-12 | 1964-06-08 | Device for damping the control members of a hydraulic power lift |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1070392A (en) |
-
1964
- 1964-06-08 GB GB2357864A patent/GB1070392A/en not_active Expired
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