CA1272412A - Coupling for connecting agricultural machinery - Google Patents
Coupling for connecting agricultural machineryInfo
- Publication number
- CA1272412A CA1272412A CA000505100A CA505100A CA1272412A CA 1272412 A CA1272412 A CA 1272412A CA 000505100 A CA000505100 A CA 000505100A CA 505100 A CA505100 A CA 505100A CA 1272412 A CA1272412 A CA 1272412A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- coupling
- tractor
- connector
- coupling frame
- 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
- A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
- A01B71/06—Special adaptations of coupling means between power take-off and transmission shaft to the implement or machine
- A01B71/063—Special adaptations of coupling means between power take-off and transmission shaft to the implement or machine for enabling transmission coupling and connection between tractor and implements to be controlled from the driver's seat
-
- 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
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
- A01B59/061—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors specially adapted for enabling connection or disconnection controlled from the driver's seat
- A01B59/062—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors specially adapted for enabling connection or disconnection controlled from the driver's seat the connection comprising a rigid interface frame on the tractor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Agricultural Machines (AREA)
Abstract
Abstract/
A coupling frame (4) that is permanently connected to the draw bars (3) of a tractor hydraulic drawbar system is provided to permit simple and reliable coupling by driving a tractor up to a machine. A connector frame (10') which is of box-section profile material is arranged on the machine and this has flanges only on two of the triangle sides that run from the apex, these projections extending towards the tractor. These projections are slid over the side surfaces of the coupling frame (4) so as to provide a shape-locking coupling of the coupling frame (4) with the connector frame (10' )./
A cross-piece (6) is provided to support the drive shaft dog clutch (8)./
(Figure 4)/
A coupling frame (4) that is permanently connected to the draw bars (3) of a tractor hydraulic drawbar system is provided to permit simple and reliable coupling by driving a tractor up to a machine. A connector frame (10') which is of box-section profile material is arranged on the machine and this has flanges only on two of the triangle sides that run from the apex, these projections extending towards the tractor. These projections are slid over the side surfaces of the coupling frame (4) so as to provide a shape-locking coupling of the coupling frame (4) with the connector frame (10' )./
A cross-piece (6) is provided to support the drive shaft dog clutch (8)./
(Figure 4)/
Description
273~2-2/
The present invention relates to a quick-acting coupling for the simultaneous connection of agricultural machinery to the drawbar system and the the power takeoff connector of a tractor, this consisting of a coupling frame that is permanently mounted on the drawbar system and a connector frame that is permanently mounted on the machinery, and of a drive-shaft stub that is connected to the power takeoff of the tractor by means of a cardan shaft, particularly a cardan shaft that can be adjusted for length, and a locking system that locks the coupling frame to the connector frame, the coupling frame that is permanently connected to the tractor hydraulic system being in the approximate shape of an equilateral triangle and having a bearing for the drive-shaft stub; the connector frame that is arranged on the machinery is formed as an approximately equilateral triangular counterframe, with the apex of the coupling frame and the apex of the connector frame being uppermost./
~ coupling of this kind is known, for example, from DE-OS 2031 ~63. In this system, the triangular frames are U-shaped, and the coupling frame has to be slid into the connector frame, attached to the machinery, from below. The two coupling members are connected rigidly to the frame, and , ~, 4~
this results in the disadvantage that it is impossible to move the coupling members relative to the particular associated frame./
Thus, however, it is practically impossible to perform a coupling operation by simply driving the tractor up to the machinery that is to be coupled to it, since on the one hand the tractor must driven beneath the machinery to which it is to be coupled, while at the same time the two coupling members must be aligned axially with each other. In addition, it must also be borne in mind that the coupling frame of the tractor must be driven up almost vertically in the frame of the machinery, which results in difficulties with the projecting portions of the drive shaft coupling./
According to EP-OS 63 533 a coupling frame for a tractor w~th an associated connector frame on the machinery is already known. In its upper, roof-like portion this consists of U-sections into which the upper portion of the coupling frame is introduced. For this reason, in order to join the two frames, they must first be in contact, when the coupling frame is inserted into the U-section of the connector frame by being raised. To this end, of course, both frames must be exactly parallel./
Finally, DE-OS 330~ 588 describes a quick coupler for field tractors, this having a coupling frame that is attached to a drawbar device having a quick-coupliny hook that is open on top./
~L~7~
It is the aim of the present invention to avoid the disadvantages set out above and to propose a coupling of the type described, which permits rapid and secure coupliny by driving the tractor up to the machinery in question./
This has been achieved according to the present invention in that the connector frame, which has a cross-section that is in particular box-like, has projections and/or flanges that protrude in the direction of the tractor only on two of the triangle sides that extend from the apex, and which, in order to provide for shape-locking coupling of the coupling frame with the connector frame is pushed over the side surfaces of the coupling frame, and that an approximately horizontal cross-piece that is displaced towards the connector frame is provided to support a drive shaft dog clutch with push-type connectors for the hydraulic, pneumatic, and electrical system connectors.
Thus, it becomes possible to drive the frame of the tractor in an axial direction into the frame of the machinery, whereupon the frames are centred by the projecting flange and by the displaced cross-piece. The cross-piece that is displaced towards the connector frame and which supports the drive shaft dog clutch also makes it possible to incorporate a longer power takeoff shaft. Because of the dog clutch it is possible to achieve an immediate connection with the ' ~L2~
drive shaft of the machinery when the coupling frame is slid onto the connector frame, and to do this without the use of additional aids./
It is preferred that the apex of the coupling frame, which extends beyond the cross-piece, be provided in the already familiar manner with a rotating roller, the axis of which is perpendicular to the direction of coupling of the two frames. It is made significantly easier to introduce the coupling frame into the apex of the connector frame by the use of such a roller./
Connection of the two frames is further simplified by the fact that the flanges on the connector frame in the vicinity of the upper apex are joined to each other so as to form a run-up surface for the roller that is secured to the coupling frame. In order to ensure a secure connection of the two frames, all that has to happen is that the coupling frame with its attached roller has to move up the run-up surface, whereupon the roller reduces the friction that is generated./
Another advantageous version of the present invention is seen in the fact that in its lower, free end area the run-up surface has an inclined face that is oriented in the direction of the coupling frame. This inclined surface makes it much simpler to insert the coupling frame with the roller, and slight displacements of the two frames cause no hindrance to the coupling procedure./
. .
Finally, there is another advantageous version of the present invention in that slip coupling with an adjustable compression spring is supported on the cross-piece of the coupling frame as a coupling for the drive shaft; the greatest possible security for the machinery and the greatest possible use of said machinery by means of suitable adjustment of the spring pressure on the coupling drum that can be slid along the drive shaft./
The present invention will be described on the basis of an exemplary version that is illustrated in the drawings appended hereto. These drawings show the following:/
Figure 1: A view of the front of a tractor with a coupling frame (in partial cross-section);/
F`igure 2: A view of the coupling frame;/
Figure 3: A cross-section through the coupling frame;/
Figure 4: A drawing as in Figure 1, although with the connector frame of a mowing machine;/
Figure 5: A view of the connector frame for the mowing /
machine;/
Figure 6: A cross-section through the connector frame as /
in Figure 5;/
Figure 7: A perspective view of the tractor with the /
coupliny frame;/
Figure 8: A front view of the coupliny frame with a locking/
system;/
... . ..
Figure 9: A side view of the coupling frame;/
Figure 10: A dog clutch;/
Figure 11: A conical sliding coupling.
Figure 1 shows the front of a tractor with the tractor hydraulic system 1 that consist of a three-point lifting device intended for coupling machinery. This three-point lifting device consists of an upper control arm 4 that can be ad~usted for length, and two lower control arms 3. These support a coupling frame 4, the connection between them being by means of link pins. The lifting frame is in the form of an equilateral triangle, the apex of which is uppermost. At its apex the coupling frame 4 has a roller 5 that is supported on a shaEt that is perpendicular to the direction of the coupling in such a manner as to be able to rotate. In the lower third of the coupling frame there is a horizontal cross-piece 6 that supports a drive-shaft dog clutch 8 and accomodates the necessary push-type connectors 8' for hydraulic, pneumatic and electrical systems. The drive shaft dog clutch 8 is driven by a cardan shaft 9, which can be adjusted for length, from the tractor's power takeoff connector 10./
As can be seen from Figure 3, the coupliny frame 4 has a box-like cross-section./
Fiyures 4 and 5 show the associated connector frame 10' that is permanently attached to the front-mounted mower assembly 23. This has a sliding coupling 24 that incorporates a spring that can be adjusted for pressure.
The connector frame 10' is also configured as an equilateral triangle and is of a size that is e~ual to the coupling frame 4, and has a similar box-like cross-section (Figure 6). On both sides of the connector frame 10' there are flanges 20 that project in the direction of the coupling frame 4; these are connected in the area of the apex by an run-up surface 20 that makes it possible to drive the assembly under and hook onto the coupling frame 4 with its roller 5./
In its lower area the run-up surface 21 has a sloping surface 22 that is inclined in the direction towards the coupling frame 4. At the same level as the coupling frame 4, on the connector frame 10', there are also installation possibilities for connectors for the hydraulic, pneumatic, and electrical systems./
The coupling of machinery to the control arms 2,3 of the tractor drawbar hydraulic system is done such that the coupling frame 4 is completely lowered and the apex with the roller is positioned correctly, from behind, in the opening of the connector frame 10' or behind the run-up surface 21, when the hydraulic [drawbar--Translator] is raised and the upper control arm is retracted, whereupon the components are locked in this position. In this way the machinery in question can be coupled up without any intervention by the operator seated on the tractor./
The locking system 11 consists of a double-acting cylinder 12, preferably a hydraulic cylinder, which is connected to the coupling frame 4; this cylinder has two piston rods, the free ends of which are supported in the guldes 13 on the lower ends of the triangle sides of the coupling frame 4. In a similar way, there are projections 14 on the connector frame 10' and these can be introduced into the guides 13; the piston rods can pass through these projections. The hydraulic cylinder incorporates a compression spring, the purpose of which is to retain the piston rods in the locking position. In order to unlock the assembly the two chambers of the cylinder 12 are pressurized through a pressure line, whereupon the piston rods are withdrawn from the guides to the point that the projections can be introduced into the guides or withdrawn from these.
When the locking system 11 according to the present invention is used a mower or the harvester can be coupled at the front and the wagon can be coupled to the rear since the machinery in question can be coupled or uncoupled very quickly, without the operator having to dismount from the tractor./
The present invention relates to a quick-acting coupling for the simultaneous connection of agricultural machinery to the drawbar system and the the power takeoff connector of a tractor, this consisting of a coupling frame that is permanently mounted on the drawbar system and a connector frame that is permanently mounted on the machinery, and of a drive-shaft stub that is connected to the power takeoff of the tractor by means of a cardan shaft, particularly a cardan shaft that can be adjusted for length, and a locking system that locks the coupling frame to the connector frame, the coupling frame that is permanently connected to the tractor hydraulic system being in the approximate shape of an equilateral triangle and having a bearing for the drive-shaft stub; the connector frame that is arranged on the machinery is formed as an approximately equilateral triangular counterframe, with the apex of the coupling frame and the apex of the connector frame being uppermost./
~ coupling of this kind is known, for example, from DE-OS 2031 ~63. In this system, the triangular frames are U-shaped, and the coupling frame has to be slid into the connector frame, attached to the machinery, from below. The two coupling members are connected rigidly to the frame, and , ~, 4~
this results in the disadvantage that it is impossible to move the coupling members relative to the particular associated frame./
Thus, however, it is practically impossible to perform a coupling operation by simply driving the tractor up to the machinery that is to be coupled to it, since on the one hand the tractor must driven beneath the machinery to which it is to be coupled, while at the same time the two coupling members must be aligned axially with each other. In addition, it must also be borne in mind that the coupling frame of the tractor must be driven up almost vertically in the frame of the machinery, which results in difficulties with the projecting portions of the drive shaft coupling./
According to EP-OS 63 533 a coupling frame for a tractor w~th an associated connector frame on the machinery is already known. In its upper, roof-like portion this consists of U-sections into which the upper portion of the coupling frame is introduced. For this reason, in order to join the two frames, they must first be in contact, when the coupling frame is inserted into the U-section of the connector frame by being raised. To this end, of course, both frames must be exactly parallel./
Finally, DE-OS 330~ 588 describes a quick coupler for field tractors, this having a coupling frame that is attached to a drawbar device having a quick-coupliny hook that is open on top./
~L~7~
It is the aim of the present invention to avoid the disadvantages set out above and to propose a coupling of the type described, which permits rapid and secure coupliny by driving the tractor up to the machinery in question./
This has been achieved according to the present invention in that the connector frame, which has a cross-section that is in particular box-like, has projections and/or flanges that protrude in the direction of the tractor only on two of the triangle sides that extend from the apex, and which, in order to provide for shape-locking coupling of the coupling frame with the connector frame is pushed over the side surfaces of the coupling frame, and that an approximately horizontal cross-piece that is displaced towards the connector frame is provided to support a drive shaft dog clutch with push-type connectors for the hydraulic, pneumatic, and electrical system connectors.
Thus, it becomes possible to drive the frame of the tractor in an axial direction into the frame of the machinery, whereupon the frames are centred by the projecting flange and by the displaced cross-piece. The cross-piece that is displaced towards the connector frame and which supports the drive shaft dog clutch also makes it possible to incorporate a longer power takeoff shaft. Because of the dog clutch it is possible to achieve an immediate connection with the ' ~L2~
drive shaft of the machinery when the coupling frame is slid onto the connector frame, and to do this without the use of additional aids./
It is preferred that the apex of the coupling frame, which extends beyond the cross-piece, be provided in the already familiar manner with a rotating roller, the axis of which is perpendicular to the direction of coupling of the two frames. It is made significantly easier to introduce the coupling frame into the apex of the connector frame by the use of such a roller./
Connection of the two frames is further simplified by the fact that the flanges on the connector frame in the vicinity of the upper apex are joined to each other so as to form a run-up surface for the roller that is secured to the coupling frame. In order to ensure a secure connection of the two frames, all that has to happen is that the coupling frame with its attached roller has to move up the run-up surface, whereupon the roller reduces the friction that is generated./
Another advantageous version of the present invention is seen in the fact that in its lower, free end area the run-up surface has an inclined face that is oriented in the direction of the coupling frame. This inclined surface makes it much simpler to insert the coupling frame with the roller, and slight displacements of the two frames cause no hindrance to the coupling procedure./
. .
Finally, there is another advantageous version of the present invention in that slip coupling with an adjustable compression spring is supported on the cross-piece of the coupling frame as a coupling for the drive shaft; the greatest possible security for the machinery and the greatest possible use of said machinery by means of suitable adjustment of the spring pressure on the coupling drum that can be slid along the drive shaft./
The present invention will be described on the basis of an exemplary version that is illustrated in the drawings appended hereto. These drawings show the following:/
Figure 1: A view of the front of a tractor with a coupling frame (in partial cross-section);/
F`igure 2: A view of the coupling frame;/
Figure 3: A cross-section through the coupling frame;/
Figure 4: A drawing as in Figure 1, although with the connector frame of a mowing machine;/
Figure 5: A view of the connector frame for the mowing /
machine;/
Figure 6: A cross-section through the connector frame as /
in Figure 5;/
Figure 7: A perspective view of the tractor with the /
coupliny frame;/
Figure 8: A front view of the coupliny frame with a locking/
system;/
... . ..
Figure 9: A side view of the coupling frame;/
Figure 10: A dog clutch;/
Figure 11: A conical sliding coupling.
Figure 1 shows the front of a tractor with the tractor hydraulic system 1 that consist of a three-point lifting device intended for coupling machinery. This three-point lifting device consists of an upper control arm 4 that can be ad~usted for length, and two lower control arms 3. These support a coupling frame 4, the connection between them being by means of link pins. The lifting frame is in the form of an equilateral triangle, the apex of which is uppermost. At its apex the coupling frame 4 has a roller 5 that is supported on a shaEt that is perpendicular to the direction of the coupling in such a manner as to be able to rotate. In the lower third of the coupling frame there is a horizontal cross-piece 6 that supports a drive-shaft dog clutch 8 and accomodates the necessary push-type connectors 8' for hydraulic, pneumatic and electrical systems. The drive shaft dog clutch 8 is driven by a cardan shaft 9, which can be adjusted for length, from the tractor's power takeoff connector 10./
As can be seen from Figure 3, the coupliny frame 4 has a box-like cross-section./
Fiyures 4 and 5 show the associated connector frame 10' that is permanently attached to the front-mounted mower assembly 23. This has a sliding coupling 24 that incorporates a spring that can be adjusted for pressure.
The connector frame 10' is also configured as an equilateral triangle and is of a size that is e~ual to the coupling frame 4, and has a similar box-like cross-section (Figure 6). On both sides of the connector frame 10' there are flanges 20 that project in the direction of the coupling frame 4; these are connected in the area of the apex by an run-up surface 20 that makes it possible to drive the assembly under and hook onto the coupling frame 4 with its roller 5./
In its lower area the run-up surface 21 has a sloping surface 22 that is inclined in the direction towards the coupling frame 4. At the same level as the coupling frame 4, on the connector frame 10', there are also installation possibilities for connectors for the hydraulic, pneumatic, and electrical systems./
The coupling of machinery to the control arms 2,3 of the tractor drawbar hydraulic system is done such that the coupling frame 4 is completely lowered and the apex with the roller is positioned correctly, from behind, in the opening of the connector frame 10' or behind the run-up surface 21, when the hydraulic [drawbar--Translator] is raised and the upper control arm is retracted, whereupon the components are locked in this position. In this way the machinery in question can be coupled up without any intervention by the operator seated on the tractor./
The locking system 11 consists of a double-acting cylinder 12, preferably a hydraulic cylinder, which is connected to the coupling frame 4; this cylinder has two piston rods, the free ends of which are supported in the guldes 13 on the lower ends of the triangle sides of the coupling frame 4. In a similar way, there are projections 14 on the connector frame 10' and these can be introduced into the guides 13; the piston rods can pass through these projections. The hydraulic cylinder incorporates a compression spring, the purpose of which is to retain the piston rods in the locking position. In order to unlock the assembly the two chambers of the cylinder 12 are pressurized through a pressure line, whereupon the piston rods are withdrawn from the guides to the point that the projections can be introduced into the guides or withdrawn from these.
When the locking system 11 according to the present invention is used a mower or the harvester can be coupled at the front and the wagon can be coupled to the rear since the machinery in question can be coupled or uncoupled very quickly, without the operator having to dismount from the tractor./
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A quick-acting coupling for the simultaneous connection of agricultural machinery to the drawbar system of a tractor and the power takeoff connector of a tractor, this consisting of a rigid coupling frame that is permanently mounted on the drawbar system and a rigid connector frame that is permanently mounted on the machinery, said frames being adapted to slide directly into one another, whereby said coupling frame may be adjusted with respect to said tractor and of a drive-shaft stub that is connected to the power takeoff of the tractor by means of a cardan shaft, particularly a cardan shaft that can be adjusted for length, and a locking system that locks the coupling frame to the connector frame, the coupling frame that is permanently connected to the tractor hydraulic system being in the approximate shape of an equilateral triangle and having a bearing for the drive-shaft stub; the connector frame that is arranged on the machinery is formed as an approximately equilateral triangular counterframe, with the apex of the coupling frame and the apex of the connector frame being uppermost, characterized in that the connector frame which in particular has a box-like cross-section, has projections and/or flanges on only two of the triangle sides that run from the apex in the direction of the tractor, these being slid over the side surfaces of the coupling frame so as to provide a shape-locking fit of the coupling frame with the connector frame, and in that an approximately horizontal cross-piece that is displaced in the direction of the connector frame is provided to support the drive shaft dog clutch and the push-type connectors for the hydraulic, pneumatic, and electrical systems.
2. A quick-acting coupling according to claim 1, wherein a rotating roller is provided on the apex of the coupling frame which extends beyond the cross-piece, the axis of this roller extending parallel to the plane of the coupling frame.
3. A quick-acting coupling according to claim 1 or 2, wherein a sliding coupling, which is supported on the cross-piece of the coupling frame and which has an adjustable compression spring, is provided as a coupling for the drive shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA896/85 | 1985-03-26 | ||
| AT0089685A AT382063B (en) | 1985-03-26 | 1985-03-26 | QUICK COUPLING FOR CONNECTING AGRICULTURAL WORKING MACHINES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1272412A true CA1272412A (en) | 1990-08-07 |
Family
ID=3502319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000505100A Expired CA1272412A (en) | 1985-03-26 | 1986-03-26 | Coupling for connecting agricultural machinery |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0197026B1 (en) |
| AT (1) | AT382063B (en) |
| CA (1) | CA1272412A (en) |
| DE (1) | DE3672647D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356549A (en) * | 1999-11-27 | 2001-05-30 | David Creighton Mcveigh | Tractor coupling |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0433282B1 (en) * | 1988-09-05 | 1994-08-24 | BURETTE, John | Hitching assemblies |
| DE9013888U1 (en) * | 1990-10-05 | 1990-12-06 | Röder, Erwin, 7341 Amstetten | Device for coupling a drive vehicle, in particular a tractor, with a device to be carried or towed by the drive vehicle, such as an attachment or trailer |
| DE4132889A1 (en) * | 1990-10-05 | 1992-04-09 | Erwin Roeder | Coupling for tractor and ancillary units - has guides in bushes followed by drive coupling engagement |
| DE4116200C1 (en) * | 1991-05-17 | 1992-07-23 | Friedrich Moertl Schleppergeraetebau Gmbh & Co Kg, 8780 Gemuenden, De | |
| DE4213069C1 (en) * | 1992-04-21 | 1993-09-23 | Friedrich Moertl Schleppergeraetebau Gmbh, 97737 Gemuenden, De | |
| WO1999009806A1 (en) * | 1997-08-29 | 1999-03-04 | The Toro Company | Multi-purpose operating unit attachment system |
| EP1008283A1 (en) * | 1998-12-08 | 2000-06-14 | Christian Forrer | Method and device for hitching an implement |
| US7503510B2 (en) | 2002-10-30 | 2009-03-17 | Deere & Company | Sprayer docking station and monitoring system |
| GB2408669B (en) * | 2003-12-04 | 2006-03-08 | Stanley Roberts | A coupling device |
| WO2004077928A1 (en) * | 2003-03-08 | 2004-09-16 | Stanley Roberts | An implement coupling device |
| US7699577B2 (en) | 2006-06-01 | 2010-04-20 | Clark Equipment Company | Interface plate for mounting a light duty attachment to a lift arm assembly |
| WO2014091267A1 (en) | 2012-12-10 | 2014-06-19 | Dinktec | Latching and locking system for attachment to tractors |
| CN103010190B (en) * | 2012-12-14 | 2014-11-12 | 盐城市盐海拖拉机制造有限公司 | Safety brake device of walking tractor |
| FR3018029B1 (en) | 2014-03-03 | 2016-10-28 | Tracto-Lock | DEVICE FOR COUPLING A TOOL EQUIPPED WITH A RECEIVER TREE, SUCH AS AN AGRICULTURAL TOOL, ON A SYSTEM FOR LIFTING A MACHINE, SUCH AS AN AGRICULTURAL TRACTOR, WITH A TENSION |
| AT14296U1 (en) * | 2014-05-22 | 2015-07-15 | Johann Gangl | Device for connecting a working device to a tractor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283840A (en) * | 1963-06-18 | 1966-11-08 | Guy E Lane | Automatically engageable power take-off coupling |
| US3285625A (en) * | 1964-12-29 | 1966-11-15 | Wausau Iron Works | Quick coupler |
| NL6614855A (en) * | 1966-10-21 | 1968-04-22 | ||
| FR2340675A2 (en) * | 1975-03-19 | 1977-09-09 | Fiat France Sa | Automatic coupling for implement to tractor - consists of frame with jaws in which is inserted bar and locking hook |
| DE2621162A1 (en) * | 1976-05-13 | 1977-11-24 | Heinrich Dipl Ing Regenbogen | Tractor PTO driven implement shaft coupling - has cup-shaped swivel support housing axially movable coupling part to be received in sleeve of coupling part on implement |
| WO1981002086A1 (en) * | 1980-01-24 | 1981-08-06 | Bercato | Device for coupling together an implement with an implement carrier |
| AT379048B (en) * | 1983-03-01 | 1985-11-11 | Steiner Josef | QUICK COUPLING FOR CONNECTING AGRICULTURAL WORKING MACHINES |
-
1985
- 1985-03-26 AT AT0089685A patent/AT382063B/en not_active IP Right Cessation
-
1986
- 1986-03-26 DE DE8686890081T patent/DE3672647D1/en not_active Expired - Lifetime
- 1986-03-26 CA CA000505100A patent/CA1272412A/en not_active Expired
- 1986-03-26 EP EP19860890081 patent/EP0197026B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356549A (en) * | 1999-11-27 | 2001-05-30 | David Creighton Mcveigh | Tractor coupling |
| GB2356549B (en) * | 1999-11-27 | 2003-04-23 | David Creighton Mcveigh | Tractor coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0197026A2 (en) | 1986-10-08 |
| DE3672647D1 (en) | 1990-08-23 |
| AT382063B (en) | 1987-01-12 |
| ATA89685A (en) | 1986-06-15 |
| EP0197026B1 (en) | 1990-07-18 |
| EP0197026A3 (en) | 1987-06-24 |
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| MKLA | Lapsed |