GB888286A - Improvements in or relating to the control of implements by mechanically propelled vehicle - Google Patents
Improvements in or relating to the control of implements by mechanically propelled vehicleInfo
- Publication number
- GB888286A GB888286A GB5923/60A GB592360A GB888286A GB 888286 A GB888286 A GB 888286A GB 5923/60 A GB5923/60 A GB 5923/60A GB 592360 A GB592360 A GB 592360A GB 888286 A GB888286 A GB 888286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- link
- control
- implement
- depth
- crank
- 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
- A01B63/1115—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 mechanical ground contact 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)
Abstract
888,286. Tractor power lift linkages. BOSCH G.m.b.H., ROBERT. Feb. 19, 1960 [Feb. 20, 1959], No. 5923/60. Class 79(1). A depth control arrangement for a tractor hydraulic power lift mechanism comprises a manually operated device for controlling the implement depth and means responsive to both the drag and depth of the implement acting upon the control device. The implement 24 is carried by lower arms 25 pivoted at 26 to the tractor and supported by a draw bar 28 suspended from' a crank 30 which is acted upon by a hydraulic ram 4 supplied with pressure fluid by a pump 2 from a reservoir 1 through a control member 3. The control member 3 has a valve spool 5 operated by a lever 10 through links 9 and 11. Passages 20 and 21 return to the reservoir and 18 and 19 lead to the ram. In the left hand position of the lever 10 in which spool 5 is in the right hand position, liquid from the pump 2 is short circuited back to the reservoir 1 through 13, 14, and 23. In its right hand position, the lever 10 has moved the spool to the left and liquid is fed to the ram through 13, 12, 22 and 19. Intermediate positions of the spool are possible giving a slow feed of liquid to the ram or throttled return from the ram (for lowering the implement) through 18, 16, 15 and 21. An "equalising" piston 6 is provided preventing surges of liquid, the piston moving to either the left or right according to whether the chamber 22 or 23 is under pressure, or remaining in the centre when both are under pressure during the slow lift. A non-return valve 7 is provided which comes into play during the lowering operation. The upper arm 36 of the lift linkage comprises telescoping members 35 and 36 and spring 34, the member 36 being connected to the lower arms 25 through a link 38. A link 44 is pivoted to the crank 30 at 43 and is connected to link 10 by a rod 45 and also by a flexible cable 41 and bracket 40 to member 36. Drag upon the implement tends to turn the lower arms about pivots 26 causing movement of 36 relative to 35 in one direction or the other, the movement being transmitted through 40, 41, 44, 45, 11 and 9 to the valve spool 5. Rise and fall of the implement also transmits a movement to the valve spool 5 through 28, 30, 44, 45, 11 and 9. The lift and drag-responsive control mechanism tends to keep the implement at a given working depth. A plurality of implements may be controlled through a number of control devices in series or parallel. Fig. 2 shows an embodiment in which two pressure cylinders 4, 4<SP>1</SP> are controlled through a series arrangement of control devices 3, 3<SP>1</SP>, the passage 20 from device 3 providing the supply to control device 3<SP>1</SP>. The control device may be replaced by a rotary control valve, Fig. 3, having connections 111 to 115 corresponding to the connections 17, 21, 18, 20 and 19 respectively of Fig. 1, two end chambers 107 and 108 corresponding to chambers 22 and 23 formed within the rotary control member 103 by a pressure balancing piston 106. A crank may be attached to the protruding end 104 of the member 103. This device may be used to put the implement in a fully trailed position wherein the lift and depth control devices are inoperative. The upper link 35 is shown in Fig. 4, the portion 139 being movable to the left relatively to the portion 128 to extend the link against the force of a helical spring 146 or to the right to shorten the link against the compressive force exerted by a series of spring washers 149. The bracket 150 corresponds to the bracket 40. A length adjusting sleeve 155 comprising left and right hand threaded portions is provided. An alternative device with two helical springs of unequal strengths is also described. An alternative depth control may include a feeler wheel or skid runner. A link system as shown in Fig. 1 with a control device as shown in Fig. 3 is shown in Fig. 7, the control member 103 being rotated through a crank 166, and links 165, 167 from a hand lever 127 or through links 165, 167, arm 175 and link 170 in response to movement of a cable 151. The cable 151 corresponds to cable 41, link 170 to link 44 arm 175 (which comprises telescopic portions connected by a spring 180) to arm 45, and a lifting shaft 159, to a retaining collar 169 of which the link 170 is pivoted at 171, corresponds to the crank 30.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB52177A DE1111444B (en) | 1959-02-20 | 1959-02-20 | Control device for the penetration depth of a particular agricultural soil cultivation device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB888286A true GB888286A (en) | 1962-01-31 |
Family
ID=6969804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5923/60A Expired GB888286A (en) | 1959-02-20 | 1960-02-19 | Improvements in or relating to the control of implements by mechanically propelled vehicle |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH380998A (en) |
DE (1) | DE1111444B (en) |
DK (1) | DK94387C (en) |
FR (1) | FR1248974A (en) |
GB (1) | GB888286A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1157829B (en) * | 1961-07-22 | 1963-11-21 | Friedrich Munz Dipl Ing | Automatic tension and position control |
DE1202048B (en) * | 1961-11-01 | 1965-09-30 | Int Harvester Co | Control device for a hydraulically pivotable coupling linkage of an agricultural device on a tractor |
GB1002492A (en) * | 1962-09-06 | 1965-08-25 | Brown Tractors Ltd | An improvement in or relating to hydraulic power lift mechanisms for tractors |
DE1193292B (en) * | 1963-01-21 | 1965-05-20 | Rheinstahl Hanomag Ag | Hydraulic depth control for tillage equipment |
GB992867A (en) * | 1963-02-08 | 1965-05-26 | Brown Tractors Ltd | An improved hydraulic power lift mechanism for agricultural tractors or the like |
DE2731164C2 (en) * | 1977-07-09 | 1983-12-08 | Robert Bosch Gmbh, 7000 Stuttgart | Device for regulating the lifting mechanism on tractors and combine harvesters |
DE102015012925A1 (en) * | 2015-10-07 | 2017-04-13 | Agritec Gmbh | Upper link with damping element |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT170512B (en) * | 1946-11-04 | 1952-02-25 | Zbrojovka Brno Np | Agricultural tractor |
DE908426C (en) * | 1948-05-12 | 1954-04-05 | Allis Chalmers Mfg Co | Self-propelled farm equipment with a tool carrier that can be raised and lowered and a lifting device that is sensitive to tension and is connected to the latter |
-
1959
- 1959-02-20 DE DEB52177A patent/DE1111444B/en active Pending
-
1960
- 1960-02-11 CH CH153960A patent/CH380998A/en unknown
- 1960-02-18 DK DK384360A patent/DK94387C/en active
- 1960-02-19 GB GB5923/60A patent/GB888286A/en not_active Expired
- 1960-02-20 FR FR819123A patent/FR1248974A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1111444B (en) | 1961-07-20 |
DK94387C (en) | 1962-09-24 |
CH380998A (en) | 1964-08-15 |
FR1248974A (en) | 1960-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1392234A (en) | Control devices for agricultural tractor-mounted implements | |
US2996125A (en) | Implement mounting system | |
US2621575A (en) | Depth control of tractor-carried agricultural implements | |
GB888286A (en) | Improvements in or relating to the control of implements by mechanically propelled vehicle | |
GB909087A (en) | Improvements in or relating to agricultural tractors | |
US4289208A (en) | Device for controlling agricultural implements mounted on an agricultural vehicle | |
US2627796A (en) | Controllable load transfer hitch for tractors | |
GB1468731A (en) | Motor vehicle having power steering | |
US2998851A (en) | Hydraulic power lift control means for tractors | |
US2720800A (en) | Forging manipulator | |
US2381588A (en) | Ground working tool lift | |
GB1349834A (en) | Tractor hydraulic lift system | |
GB966553A (en) | Improvements in or relating to devices for controlling the working depth of implements attached to a tractor having a lifting gear and lifting linkage | |
US2672802A (en) | Auxiliary hydraulic apparatus for tractors | |
US3313354A (en) | Apparatus for automatically controlling the depth of soil tilled by agricultural tractors | |
US2353855A (en) | Vehicle jack | |
GB992867A (en) | An improved hydraulic power lift mechanism for agricultural tractors or the like | |
US2822737A (en) | Power operating system for tractor hitch linkage | |
GB820064A (en) | Improvements in or relating to tractors | |
US3256940A (en) | Hydraulic power lift mechanisms | |
US3103147A (en) | Hydraulic lifting devices for tractors | |
SU387642A1 (en) | LIBRARY | |
US2691929A (en) | Control for tractor power lifts | |
US3191687A (en) | Automatic draft control and compensating system for tractors | |
US2833195A (en) | Tractor hydraulic lifts |