EP1768481A1 - Clutch arrangement between an implement and a vehicle - Google Patents

Clutch arrangement between an implement and a vehicle

Info

Publication number
EP1768481A1
EP1768481A1 EP05739375A EP05739375A EP1768481A1 EP 1768481 A1 EP1768481 A1 EP 1768481A1 EP 05739375 A EP05739375 A EP 05739375A EP 05739375 A EP05739375 A EP 05739375A EP 1768481 A1 EP1768481 A1 EP 1768481A1
Authority
EP
European Patent Office
Prior art keywords
coupling
arrangement
vehicle
implement
longitudinally adjustable
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.)
Withdrawn
Application number
EP05739375A
Other languages
German (de)
French (fr)
Inventor
Søren Kaastrup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KAASTRUP Soren
Original Assignee
KAASTRUP Soren
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KAASTRUP Soren filed Critical KAASTRUP Soren
Publication of EP1768481A1 publication Critical patent/EP1768481A1/en
Withdrawn legal-status Critical Current

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
    • A01B63/11—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means for controlling weight transfer between implements and tractor wheels
    • 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
    • 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
    • A01B59/066—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors of the type comprising at least two lower arms and one upper arm generally arranged in a triangle (e.g. three-point hitches)
    • A01B59/067—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors of the type comprising at least two lower arms and one upper arm generally arranged in a triangle (e.g. three-point hitches) the lower arms being lifted or lowered by power actuator means internally incorporated in the tractor

Definitions

  • the present invention concerns a coupling arrangement between a vehicle and an implement, where in connection with the vehicle, a multipoint arrangement is provided which comprises at least an upper coupling part and a number of lower coupling parts where in connection with the implement, a triple-point arrangement is provided which comprises at least an upper coupling part and at least two lower coupling parts, and where a number of coupling members and a number of longitudinally adjustable connecting rods connect said three-point arrangement and said multipoint arrangement.
  • triple point suspension arrangements By connecting implements to a vehicle, preferably a tractor, today triple point suspension arrangements are generally used, if the implement is of a certain size and/or is to be elevated/lowered during operation.
  • the advantage of using a triple point suspension is that the implement may be kept in a predetermined vertical position as well as vertical position.
  • implements depend on the tractor being capable of lifting the implement up from the earth during transport and in other situations.
  • the implements can work the soil at a desired depth or with desired pressure due to their own weight.
  • the combination of the above provides that the tractors become large, which can be disadvantageous since soil compaction can arise in the wheel tracks after the tractors, causing the earth in the wheel tracks to be less fertile than the surrounding earth.
  • the purpose of the present invention is to indicate a coupling arrangement between an implement and a vehicle which in a simple way enables transfer of a downwards directed force from the vehicle to the implement, and which can be controlled by means of a simple control mechanism.
  • one of said lower coupling parts is connected with a drawbar of said vehicle, and where between said upper coupling part and said lower coupling parts a number of longitudinally adjustable connecting rods are provided.
  • a force parallelogram including the three- point arrangement, the multipoint arrangement, the connecting rods and the coupling members arises, where the longitudinally adjustable connecting rods are disposed diagonally in the force parallelogram.
  • the coupling arrangement By interconnecting an implement and a vehicle by means of the present coupling arrangement, the coupling arrangement is mounted on the vehicle in the initial position, and the longitudinally adjustable connecting rods are adjusted to a certain length so that they allow unencumbered coupling of the implement and lifting and lowering of the implement.
  • the coupling arrangement may be provided with a three-point arrangement which is provided on the implement, and where the aforementioned three-point arrangement is an integrated part of the implement, where in the three-point arrangement there is provided at least at least one upper coupling part and at least two lower coupling parts, and where the multipoint arrangement provided on the vehicle includes four coupling parts, including an upper coupling part and three lower coupling parts, and where one of the lower coupling parts is fastened to the drawbar of the vehicle, and where a longitudinally adjustable connecting rod at one end is fastened to the lower coupling part and at the other end is fastened to one of the upper coupling parts of the three-point arrangement, and where between the upper coupling part of the multipoint arrangement and the upper coupling parts of the three-point arrangement there is provided a longitudinally adjustable connecting rod, e.g. a top rod or a hydraulic cylinder.
  • a longitudinally adjustable connecting rod e.g. a top rod or a hydraulic cylinder.
  • the upper coupling part includes a number of coupling eyelets which are used for coupling the longitudinally adjustable connecting rods. This entails that it is no longer necessary to fasten the longitudinally adjustable connecting rods in the same coupling eyelet. They may also be fastened slightly staggered.
  • the longitudinally adjustable connecting rod which is disposed between one of the lower coupling parts of the multipoint arrangement and one of the other coupling parts of the three-point arrangement, is mounted in full length.
  • the lower coupling parts therefore include a number of coupling plates that each are provided with a number of coupling eyelets, entailing that longitudinally adjustable connecting rods with different lengths may be mounted in a set of coupling plates.
  • the lower coupling part is designed with a plurality of coupling plate sets, so that each longitudinally adjustable connecting rod is connected with a set of coupling plates.
  • These coupling plates are thus disposed with a certain mutual spacing, so that there is space between the longitudinally adjustable connecting rods.
  • the coupling arrangement according to the present invention may thereby furthermore be used for implements that need power transmission from the vehicle.
  • the lower centrally disposed coupling part is typically disposed in the drawbar of the vehicle, but may alternatively be designed so that the lower coupling parts are connected with a crossbar connecting the lower coupling parts, and so that between the upper coupling part and the lower coupling parts, a number of longitudinally adjustable connecting rods are provided.
  • the longitudinally adjustable connecting rod between the upper part of the three-point arrangement and the upper part of the multipoint arrangement will be a top rod which is adjusted once for all when the coupling arrangement is mounted on the vehicle.
  • the second longitudinally adjustable connecting rod between the lower part of the multipoint arrangement of the vehicle and the upper part of the three- point arrangement of the implement may also be a top rod.
  • the top rod is driven either mechanically, hydraulically or pneumatically so that it may be adjusted. The following is then to be performed: - a mechanically driven top rod is turned each time additional downward force is applied on the implement;
  • a hydraulically or pneumatically driven top rod may be activated so that the length is either increased or reduced.
  • a cylinder may be used as a longitudinally adjustable connecting rod between the lower part of the multipoint arrangement of the vehicle and the upper part of the three-point arrangement of the implement.
  • the cylinder may be pneumatically, hydraulically or electrically driven so that it may be activated from inside the vehicle when an increased downwards force on the implement is desired.
  • a downward force from the vehicle via a longitudinally adjustable connecting rod, the pressure on the rearmost wheel axle of the vehicle is reduced. This entails that the vehicle do not need the same amount of front weight in order to counterbalance coupling to an implement.
  • the longitudinally adjustable connecting rod between the drawbar of the vehicle and the top part of the three-point arrangement of the implement may furthermore be used for assisting lift of the heavy implement.
  • the longitudinally adjustable connecting.rods are provided with a control which is connected to the control of the vehicle.
  • the longitudinally adjustable coimecting rods are pneumatically or electrically driven, the control of the longitudinally adjustable connecting rods will be connected to the electric system of the vehicle.
  • the longitudinally adjustable connecting rods are driven hydraulically, the control of the longitudinally adjustable connecting rods will be connected to the hydraulic system of the vehicle. This entails that it is possible for the driver of the vehicle to control the longitudinally adjustable connecting rods from the vehicle and thereby attain an optimal setting of the weight transfer from the vehicle to the following implement and/or optimal depth setting of the following implement.
  • longitudinally adjustable connecting rods and/or coupling members are provided with gripping means at the free end apart from the vehicle, it is possible to couple the vehicle to a following implement without using an A-frame.
  • the arrangement is described used for coupling between implement and vehicle, but the invention may furthermore be used for coupling e.g. two implements.
  • Fig. 1 shows the coupling arrangement according to the invention
  • FIG. 2 shows the coupling arrangement as seen from the side;
  • Fig. 3 shows an alternative coupling arrangement according to the invention;
  • Fig. 4 shows a coupling arrangement in connection with a scraper blade
  • Fig. 5 a shows a coupling arrangement with a scraper blade as seen from the side in a lowered position
  • Fig. 5b shows a coupling arrangement with a scraper blade as seen from the side in elevated position
  • Fig. 6a shows a coupling arrangement in connection with a roller
  • Fig. 6b shows a coupling arrangement in connection with an implement
  • Fig. 7 shows an alternative coupling arrangement according to the invention.
  • Fig. 1 a coupling arrangement 1 that includes a three-point arrangement 2 and a multipoint arrangement 3, where the three-point arrangement 2 is designed as a three-point frame A-frame 4.
  • the three-point frame 4 is provided in its upper part with a coupling part 19, which includes two coupling eyelets 6 and 7, and is provided with two coupling parts 11 in the lower part.
  • the multipoint arrangement 3, which is intended for coupling to a vehicle (not shown), includes an upper coupling part 8 and three lower coupling parts 10 and 14.
  • a pair of coupling members 12 Between the two lower coupling parts 10 and the two lower coupling parts 11, there are provided a pair of coupling members 12, and between the coupling eyelet 7 and coupling part 8 there is provided a longitudinally adjustable connecting rod 13b, which is here shown as a top rod.
  • the longitudinally adjustable connecting rod 13a is fastened to a coupling part 14 which includes a number of coupling plates 32.
  • a coupling part 14 which includes a number of coupling plates 32.
  • the longitudinally adjustable connecting rod 13a may be fitted in its full length and adapted in a set of coupling plates 32, as these are provided with a number of coupling eyelets 15, in order thereby to make allowance for possible variation of the length of the longitudinally adjustable connecting rod 13 a.
  • the coupling part 14 is secured to the drawbar 16 of the vehicle by means of a bolt 17, and is shown together with the coupling arrangement 1 as well as separated from it.
  • the hole 18 is made so that the coupling part 14 may be fastened to the drawbar 16 of the vehicle by placing a bolt 17 in the hole 18.
  • Fig. 2 shows the coupling arrangement 1 from the side. It appears from the Figure that the longitudinally adjustable connecting rod 13a is secured at one end to a three-point frame 4 by means of the coupling part 19, and at the other end it is secured to a multipoint arrangement 3 by means of the coupling part 9. In coupling part 19, the connecting rod 13a is fastened to the coupling eyelet 6.
  • the multipoint arrangement 3 is provided in connection with a vehicle (not shown).
  • Coupling part 14' is shown with a set of coupling plates 32 that only contain one row of coupling eyelets 15.
  • the coupling part 14' is fastened to the drawbar 16 of the vehicle (not shown) in the same way as coupling part 14.
  • Fig. 3 shows a coupling arrangement 1 with two longitudinally adjustable connecting rods 13a.
  • the two longitudinally adjustable connecting rods 13a are connected at the upper end to a fastening arrangement 30 on which is provided a coupling part 31 which may be fastened to an implement.
  • the two longitudinally adjustable connecting rods 13a are fastened to a coupling part 14" which in turn is fastened to the drawbar 16 of the vehicle in the same way as the coupling part 14.
  • the coupling part 14" includes a number of coupling plates 32 that are each equipped with two rows of coupling eyelets 15 for fastening the longitudinally adjustable connecting rods 13 a.
  • Such a coupling arrangement 100 with the two longitudinally adjustable connecting rods 13a enable transmission of force from the vehicle (not shown) to an implement (not shown). Furthermore, such a coupling arrangement 100 may be used in connection with a tool without an (A-frame).
  • Fig. 4 shows a coupling arrangement 1 where the three-point arrangement 2 is an integrated part of an implement 40 which is shown as a scraper blade.
  • a snap-action coupling 41 (A-frame) is provided in the scraper blade 40. This means that the coupling arrangement 1 may rapidly be coupled to the scraper blade 40 via the three-point frame 4.
  • Figs. 5a and 5b is shown how a contraction of the adjustable connecting rod 13a entails that the scraper blade 40 is pressed down against the earth 50, whereby the downward pressure from the scraper blade 40 is increased.
  • Fig. 6a is shown how a coupling arrangement 1 is provided on a roller 60 by means of a three-point arrangement 2 and a snap-action coupling 41.
  • Fig. 6b is shown an alternative embodiment of the invention, where the coupling arrangement 1 is provided in connection with a frame 61 of a roller 60.
  • roller 60 is used for coupling a following, towed implement (not shown).
  • a snap-action coupling 41 (A-frame) is fitted on the frame 61. This means that a roller 60 may be rapidly coupled to the coupling 1 via the three-point frame 4.
  • Fig. 7 shows an alternative coupling arrangement 70 which is an integrated part of the tractor (not shown).
  • the coupling arrangement 70 includes a three-point arrangement 71 and a multipoint arrangement 72, where the three-point arrangement 71 is connected with the tractor (not shown).
  • the multipoint arrangement 72 is adapted for connecting a following implement without using an A-frame, as the coupling members 73 and the longitudinally adjustable connecting rod 74 can be provided with gripping means 75.
  • the three-point arrangement 71 is provided with a coupling part 76 in the upper part, and is provided with two coupling parts 80 and a drawbar 79 in the lower part.
  • the multipoint arrangement 72 includes an upper coupling part 77 and two coupling parts 78.
  • a pair of coupling members 73 Between the two coupling parts 80 of the three-point arrangement and the two coupling parts 78 of the multipoint arrangement 72, there are provided a pair of coupling members 73, and between the coupling part 76 and coupling part 77 there is provided a longitudinally adjustable connecting rod 74, which is here shown as a top rod, and which is pivotably connected to coupling part 76..
  • coupling arrangement 70 is an integrated part of the tractor (not shown), as the longitudinally adjustable connecting rod 74 is pivotably connected to coupling part 76, and the two longitudinally adjustable connecting rods 81 are pivotably connected to the drawbar 79.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Agricultural Machines (AREA)
  • Soil Working Implements (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

Coupling arrangement (1) between a vehicle and a tool, where in connection with the vehicle, a multipoint arrangement (3) is provided which comprises at least an upper coupling part (8) and a number of lower coupling parts (10, 14) where in connection with the tool, a triple-point arrangement (2) is provided which comprises at least an upper coupling part (19) and at least two lower coupling parts (11), and where a number of coupling members (12) and a number of longitudinally adjustable connecting rods (13b) connect said three-point arrangement (2) and said multipoint arrangement (3), and where at least one of said lower coupling parts (14) is connected with a drawbar (16) of said vehicle, and where in between said upper coupling part (19) and said lower coupling parts (14), a number of longitudinally adjustable connecting rods (13a) are provided.

Description

CLUTCH ARRANGEMENT BETWEEN AN IMPLEMENT AND A VEHICLE
Field of the Invention
The present invention concerns a coupling arrangement between a vehicle and an implement, where in connection with the vehicle, a multipoint arrangement is provided which comprises at least an upper coupling part and a number of lower coupling parts where in connection with the implement, a triple-point arrangement is provided which comprises at least an upper coupling part and at least two lower coupling parts, and where a number of coupling members and a number of longitudinally adjustable connecting rods connect said three-point arrangement and said multipoint arrangement.
Background of the Invention
By connecting implements to a vehicle, preferably a tractor, today triple point suspension arrangements are generally used, if the implement is of a certain size and/or is to be elevated/lowered during operation. The advantage of using a triple point suspension is that the implement may be kept in a predetermined vertical position as well as vertical position.
By using triple suspension in connection with coupling an implement to a tractor, it is possible to connect e.g. a scraper plate, a roller, a harrow or similar soil tillage implement to a tractor.
These implements depend on the tractor being capable of lifting the implement up from the earth during transport and in other situations. When the implement is to be used on/in the soil, the implements can work the soil at a desired depth or with desired pressure due to their own weight.
This may be a drawback because the implements, or part thereof, are to have great weight or large size in order to force the soil tilling part of the implement down into the earth or to produce the desired downwards directed pressure. This means that the implements become very heavy and thus require greater power for running. At the same time, the industry wants that the implements are to be very wide so that driving across the fields too many times is avoided.
The combination of the above provides that the tractors become large, which can be disadvantageous since soil compaction can arise in the wheel tracks after the tractors, causing the earth in the wheel tracks to be less fertile than the surrounding earth.
From US 4 448 274 is known a coupling arrangement where a number of longitudinally adjustable connecting rods are provided between the vehicle and the implement. This implement implies that part of the weight of the vehicle is transferred to the implement and thereby exerts a downward force from the vehicle to the implement.
However, there are disadvantages associated with this coupling arrangement. Firstly, it is possible to extend as well as shorten the longitudinally adjustable connecting rods, requiring a relatively complicated control mechanism which can synchronise the contraction and/or the extension of the aforementioned longitudinally adjustable connecting rods. Secondly, there is a risk that coupling members, or the first three- point arrangement, are deformed or destroyed if too large power transmission is applied at the extension of the aforementioned longitudinally adjustable extension rod. Besides, the invention is limited to coupling of two three-point arrangements.
Object of the Invention
The purpose of the present invention is to indicate a coupling arrangement between an implement and a vehicle which in a simple way enables transfer of a downwards directed force from the vehicle to the implement, and which can be controlled by means of a simple control mechanism.
This purpose is achieved by means of a coupling arrangement as specified in the preamble of claim 1, and where at least one of said lower coupling parts is connected with a drawbar of said vehicle, and where in between said upper coupling part and said lower coupling parts, a number of longitudinally adjustable connecting rods are provided. Summary of the Invention
In order to increase the pressure on the implement so that the pressure of the implement equals the self-weight of the implement plus the pressure exerted by the coupling arrangement, one of said lower coupling parts is connected with a drawbar of said vehicle, and where between said upper coupling part and said lower coupling parts a number of longitudinally adjustable connecting rods are provided.
By providing longitudinally adjustable connecting rods between the upper part of the three-point arrangement on the implement and a lower part of the multipoint arrangement on the vehicle as well as a connection between the three-point arrangement and the multipoint arrangement with coupling members and a further longitudinally adjustable connecting rod, a force parallelogram including the three- point arrangement, the multipoint arrangement, the connecting rods and the coupling members arises, where the longitudinally adjustable connecting rods are disposed diagonally in the force parallelogram. By varying the length of these diagonal longitudinally adjustable connecting rods, the shape of the force parallelogram maybe changed.
By interconnecting an implement and a vehicle by means of the present coupling arrangement, the coupling arrangement is mounted on the vehicle in the initial position, and the longitudinally adjustable connecting rods are adjusted to a certain length so that they allow unencumbered coupling of the implement and lifting and lowering of the implement.
When the implement is lowered to the, ground for treating the surface of the soil, it is possible to increase the downward pressure on the implement by shortening the longitudinally adjustable connection rod between the lower part of the multipoint arrangement of the vehicle and the upper coupling part of the three-point arrangement.
In a preferred embodiment of the present invention, the coupling arrangement may be provided with a three-point arrangement which is provided on the implement, and where the aforementioned three-point arrangement is an integrated part of the implement, where in the three-point arrangement there is provided at least at least one upper coupling part and at least two lower coupling parts, and where the multipoint arrangement provided on the vehicle includes four coupling parts, including an upper coupling part and three lower coupling parts, and where one of the lower coupling parts is fastened to the drawbar of the vehicle, and where a longitudinally adjustable connecting rod at one end is fastened to the lower coupling part and at the other end is fastened to one of the upper coupling parts of the three-point arrangement, and where between the upper coupling part of the multipoint arrangement and the upper coupling parts of the three-point arrangement there is provided a longitudinally adjustable connecting rod, e.g. a top rod or a hydraulic cylinder.
In an embodiment of the present invention, the upper coupling part includes a number of coupling eyelets which are used for coupling the longitudinally adjustable connecting rods. This entails that it is no longer necessary to fasten the longitudinally adjustable connecting rods in the same coupling eyelet. They may also be fastened slightly staggered.
In a preferred embodiment, it is supposed that the longitudinally adjustable connecting rod, which is disposed between one of the lower coupling parts of the multipoint arrangement and one of the other coupling parts of the three-point arrangement, is mounted in full length. The lower coupling parts therefore include a number of coupling plates that each are provided with a number of coupling eyelets, entailing that longitudinally adjustable connecting rods with different lengths may be mounted in a set of coupling plates.
If a plurality of longitudinally adjustable connecting rods are used between the lower coupling part and the upper coupling part, then the lower coupling part is designed with a plurality of coupling plate sets, so that each longitudinally adjustable connecting rod is connected with a set of coupling plates. These coupling plates are thus disposed with a certain mutual spacing, so that there is space between the longitudinally adjustable connecting rods. This furthermore implies that it is possible to use the power take-off of the vehicle, as power transmission can be let out between the two longitudinally adjustable connecting rods. The coupling arrangement according to the present invention may thereby furthermore be used for implements that need power transmission from the vehicle.
The lower centrally disposed coupling part is typically disposed in the drawbar of the vehicle, but may alternatively be designed so that the lower coupling parts are connected with a crossbar connecting the lower coupling parts, and so that between the upper coupling part and the lower coupling parts, a number of longitudinally adjustable connecting rods are provided.
Typically, the longitudinally adjustable connecting rod between the upper part of the three-point arrangement and the upper part of the multipoint arrangement will be a top rod which is adjusted once for all when the coupling arrangement is mounted on the vehicle. Besides, the second longitudinally adjustable connecting rod between the lower part of the multipoint arrangement of the vehicle and the upper part of the three- point arrangement of the implement may also be a top rod.
The top rod is driven either mechanically, hydraulically or pneumatically so that it may be adjusted. The following is then to be performed: - a mechanically driven top rod is turned each time additional downward force is applied on the implement;
- a hydraulically or pneumatically driven top rod may be activated so that the length is either increased or reduced.
Alternatively, a cylinder may be used as a longitudinally adjustable connecting rod between the lower part of the multipoint arrangement of the vehicle and the upper part of the three-point arrangement of the implement.
The cylinder may be pneumatically, hydraulically or electrically driven so that it may be activated from inside the vehicle when an increased downwards force on the implement is desired. By transmitting a downward force from the vehicle via a longitudinally adjustable connecting rod, the pressure on the rearmost wheel axle of the vehicle is reduced. This entails that the vehicle do not need the same amount of front weight in order to counterbalance coupling to an implement.
According to the invention, by using a coupling arrangement it becomes easy for the following implement to keep a constant soil tilling depth, since the coupling members of the vehicle carry/hold the implement at the desired depth, whereafter the pressure can be increased by means of the coupling cylinder.
While operating heavy implements, the longitudinally adjustable connecting rod between the drawbar of the vehicle and the top part of the three-point arrangement of the implement may furthermore be used for assisting lift of the heavy implement.
In order to control the interaction between the longitudinally adjustable connecting rods so that it is straightforward to control the weight transfer and/or the depth setting of the following implement, the longitudinally adjustable connecting.rods are provided with a control which is connected to the control of the vehicle.
This means that if the longitudinally adjustable coimecting rods are pneumatically or electrically driven, the control of the longitudinally adjustable connecting rods will be connected to the electric system of the vehicle. Alternatively, if the longitudinally adjustable connecting rods are driven hydraulically, the control of the longitudinally adjustable connecting rods will be connected to the hydraulic system of the vehicle. This entails that it is possible for the driver of the vehicle to control the longitudinally adjustable connecting rods from the vehicle and thereby attain an optimal setting of the weight transfer from the vehicle to the following implement and/or optimal depth setting of the following implement.
If the longitudinally adjustable connecting rods and/or coupling members are provided with gripping means at the free end apart from the vehicle, it is possible to couple the vehicle to a following implement without using an A-frame. The arrangement is described used for coupling between implement and vehicle, but the invention may furthermore be used for coupling e.g. two implements.
Short Description of the Drawing In the following, the arrangement according to the invention is described with reference to the Figures, where:
Fig. 1 shows the coupling arrangement according to the invention;
Fig. 2 shows the coupling arrangement as seen from the side; Fig. 3 shows an alternative coupling arrangement according to the invention;
Fig. 4 shows a coupling arrangement in connection with a scraper blade;
Fig. 5 a shows a coupling arrangement with a scraper blade as seen from the side in a lowered position;
Fig. 5b shows a coupling arrangement with a scraper blade as seen from the side in elevated position;
Fig. 6a shows a coupling arrangement in connection with a roller;
Fig. 6b shows a coupling arrangement in connection with an implement; and
Fig. 7 shows an alternative coupling arrangement according to the invention.
Detailed Description of the Figures
In Fig. 1 is shown a coupling arrangement 1 that includes a three-point arrangement 2 and a multipoint arrangement 3, where the three-point arrangement 2 is designed as a three-point frame A-frame 4.
The three-point frame 4 is provided in its upper part with a coupling part 19, which includes two coupling eyelets 6 and 7, and is provided with two coupling parts 11 in the lower part. The multipoint arrangement 3, which is intended for coupling to a vehicle (not shown), includes an upper coupling part 8 and three lower coupling parts 10 and 14.
Between the two lower coupling parts 10 and the two lower coupling parts 11, there are provided a pair of coupling members 12, and between the coupling eyelet 7 and coupling part 8 there is provided a longitudinally adjustable connecting rod 13b, which is here shown as a top rod.
At one end, the longitudinally adjustable connecting rod 13a is fastened to a coupling part 14 which includes a number of coupling plates 32. This entails that the longitudinally adjustable connecting rod 13a may be fitted in its full length and adapted in a set of coupling plates 32, as these are provided with a number of coupling eyelets 15, in order thereby to make allowance for possible variation of the length of the longitudinally adjustable connecting rod 13 a.
The coupling part 14 is secured to the drawbar 16 of the vehicle by means of a bolt 17, and is shown together with the coupling arrangement 1 as well as separated from it. The hole 18 is made so that the coupling part 14 may be fastened to the drawbar 16 of the vehicle by placing a bolt 17 in the hole 18.
Fig. 2 shows the coupling arrangement 1 from the side. It appears from the Figure that the longitudinally adjustable connecting rod 13a is secured at one end to a three-point frame 4 by means of the coupling part 19, and at the other end it is secured to a multipoint arrangement 3 by means of the coupling part 9. In coupling part 19, the connecting rod 13a is fastened to the coupling eyelet 6. The multipoint arrangement 3 is provided in connection with a vehicle (not shown).
Coupling part 14' is shown with a set of coupling plates 32 that only contain one row of coupling eyelets 15. The coupling part 14' is fastened to the drawbar 16 of the vehicle (not shown) in the same way as coupling part 14.
Fig. 3 shows a coupling arrangement 1 with two longitudinally adjustable connecting rods 13a. The two longitudinally adjustable connecting rods 13a are connected at the upper end to a fastening arrangement 30 on which is provided a coupling part 31 which may be fastened to an implement. At the lower end, the two longitudinally adjustable connecting rods 13a are fastened to a coupling part 14" which in turn is fastened to the drawbar 16 of the vehicle in the same way as the coupling part 14. The coupling part 14" includes a number of coupling plates 32 that are each equipped with two rows of coupling eyelets 15 for fastening the longitudinally adjustable connecting rods 13 a.
Such a coupling arrangement 100 with the two longitudinally adjustable connecting rods 13a enable transmission of force from the vehicle (not shown) to an implement (not shown). Furthermore, such a coupling arrangement 100 may be used in connection with a tool without an (A-frame).
Fig. 4 shows a coupling arrangement 1 where the three-point arrangement 2 is an integrated part of an implement 40 which is shown as a scraper blade.
A snap-action coupling 41 (A-frame) is provided in the scraper blade 40. This means that the coupling arrangement 1 may rapidly be coupled to the scraper blade 40 via the three-point frame 4.
In Figs. 5a and 5b is shown how a contraction of the adjustable connecting rod 13a entails that the scraper blade 40 is pressed down against the earth 50, whereby the downward pressure from the scraper blade 40 is increased.
In Fig. 6a is shown how a coupling arrangement 1 is provided on a roller 60 by means of a three-point arrangement 2 and a snap-action coupling 41.
In Fig. 6b is shown an alternative embodiment of the invention, where the coupling arrangement 1 is provided in connection with a frame 61 of a roller 60. The drawbar
63 on the roller 60 is used for coupling a following, towed implement (not shown). A snap-action coupling 41 (A-frame) is fitted on the frame 61. This means that a roller 60 may be rapidly coupled to the coupling 1 via the three-point frame 4.
The cylinder 13a between the coupling arrangement 1 and the three-point arrangement
2 and the multipoint arrangement 3 are used for increasing the downwards directed force on the roller 60. This is achieved by shortening the cylinder 13 a, whereby part of the weight of the vehicle (not shown) is transmitted to the roller 60.
Due to the cylinder arrangement 62 of the roller 60, a downward force may be transmitted from the tractor onto the roller, while the drawbar 63 to the connected towed implement (not shown) is kept in a constant position, so that increase of the pressure of the roller 60 does not cause a change in the predetermined soil depth of the coupled towed implement (not shown).
Fig. 7 shows an alternative coupling arrangement 70 which is an integrated part of the tractor (not shown). The coupling arrangement 70 includes a three-point arrangement 71 and a multipoint arrangement 72, where the three-point arrangement 71 is connected with the tractor (not shown).
The multipoint arrangement 72 is adapted for connecting a following implement without using an A-frame, as the coupling members 73 and the longitudinally adjustable connecting rod 74 can be provided with gripping means 75.
The three-point arrangement 71 is provided with a coupling part 76 in the upper part, and is provided with two coupling parts 80 and a drawbar 79 in the lower part. The multipoint arrangement 72 includes an upper coupling part 77 and two coupling parts 78.
Between the two coupling parts 80 of the three-point arrangement and the two coupling parts 78 of the multipoint arrangement 72, there are provided a pair of coupling members 73, and between the coupling part 76 and coupling part 77 there is provided a longitudinally adjustable connecting rod 74, which is here shown as a top rod, and which is pivotably connected to coupling part 76..
Between the drawbar 79 and coupling part 77 there are provided two longitudinally adjustable connecting rods 81, where the two longitudinally adjustable connecting rods 81 are pivotably connected to the drawbar 79. In the shown embodiment of the present invention, coupling arrangement 70 is an integrated part of the tractor (not shown), as the longitudinally adjustable connecting rod 74 is pivotably connected to coupling part 76, and the two longitudinally adjustable connecting rods 81 are pivotably connected to the drawbar 79.

Claims

1. Coupling arrangement (1) between a vehicle and an implement, where in connection with the vehicle, a multipoint arrangement (3) is provided which comprises at least an upper coupling part (8) and a number of lower coupling parts (10,14) where in connection with the implement, a triple-point arrangement (2) is provided which comprises at least an upper coupling part (19) and at least two lower coupling parts (11), and where a number of coupling members (12) and a number of longitudinally adjustable connecting rods (13b) connect said three-point arrangement (2) and said multipoint arrangement (3), characterised in that at least one of said lower coupling parts (14) is connected with a drawbar (16) of said vehicle, and where in between said upper coupling part (19) and said lower coupling parts (14), a number of longitudinally adjustable connecting rods (13a) are provided.
2. Coupling arrangement (1) according to claim 1, characterised in that the upper coupling part (19) includes a number of coupling eyelets (6, 7) for coupling the longitudinally adjustable connecting rods (13a, 13b).
3. Coupling arrangement (1) according to any of claims 1 - 2, characterised in that the lower coupling part (14) include a number of coupling plates (32) that each are provided with a number of coupling eyelets (15).
4. Coupling arrangement (1) between a vehicle and an implement, where on the vehicle a multipoint arrangement (3) is provided, including at least an upper coupling part (8) and a number of lower coupling parts (10,14) where on the implement a triple-point arrangement (2) is provided, comprising at least an upper coupling part (19) and at least two lower coupling parts (11), and where a number of coupling members (12) and a number of longitudinally adjustable connecting rods (13b) connect said three-point arrangement (2) and said multipoint arrangement (3), characterised in that the lower coupling parts (14) are connected with a crossbar
(16) connecting the lower coupling parts (10), and where between the upper coupling part (19) and the lower coupling parts (14), a number of longitudinally adjustable connecting rods (13a) are provided.
5. Coupling arrangement (1) according to any of claims 1 -4, characterised in that the longitudinally adjustable connecting rods (13a, 13b) are constituted by one of the following, or a combination of the following:
- hydraulic, pneumatic and/or electric cylinders;
- hydraulic, pneumatic, electric and/or mechanical top rods;
- mechanical displacing rods.
6. Coupling arrangement (1) according to any of claims 1 -5, characterised in that the longitudinally adjustable connecting rods (13a, 13b) are provided with a control which is connected to the control of the vehicle.
EP05739375A 2004-06-08 2005-05-06 Clutch arrangement between an implement and a vehicle Withdrawn EP1768481A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200400892A DK176105B1 (en) 2004-06-08 2004-06-08 Coupling arrangement between a tool and a vehicle
PCT/DK2005/000309 WO2005120207A1 (en) 2004-06-08 2005-05-06 Clutch arrangement between an implement and a vehicle

Publications (1)

Publication Number Publication Date
EP1768481A1 true EP1768481A1 (en) 2007-04-04

Family

ID=35502731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05739375A Withdrawn EP1768481A1 (en) 2004-06-08 2005-05-06 Clutch arrangement between an implement and a vehicle

Country Status (3)

Country Link
EP (1) EP1768481A1 (en)
DK (1) DK176105B1 (en)
WO (1) WO2005120207A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755721A (en) * 1951-06-22 1956-07-24 Theodore C Rusconi Automatic depth control systems for agricultural implements
GB1033374A (en) * 1962-04-11 1966-06-22 Massey Ferguson Ltd Improvements in or relating to agricultural machines
US3731746A (en) * 1971-11-18 1973-05-08 Allis Chalmers Weight transfer hitch
US3795415A (en) 1972-09-29 1974-03-05 Deere & Co Multi-load tractor hitch system
GB2046683B (en) 1979-03-21 1984-03-28 Lely Nv C Van Der Tractor
FR2649580B1 (en) * 1989-07-13 1992-02-07 Defrancq Hubert HITCH AND LIFT SYSTEM FOR A TOOL, PARTICULARLY AGRICULTURAL, SUITABLE FOR MOUNTING ON THE FRONT OF A TRACTOR
US6230817B1 (en) * 1999-08-10 2001-05-15 Case Corporation Hitch assembly for a work vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005120207A1 *

Also Published As

Publication number Publication date
DK200400892A (en) 2005-12-09
DK176105B1 (en) 2006-06-26
WO2005120207A1 (en) 2005-12-22

Similar Documents

Publication Publication Date Title
EP3026997B1 (en) Soil cultivation implement having a device for reconsolidation
US9155237B2 (en) Soil tilling and planting implement
US4489789A (en) Tillage and planter carrier
US4615396A (en) Multiple farm implement actuating system
US9282689B2 (en) Soil tilling and planting implement
US4561504A (en) Flexible tine harrow for the preparation of seed beds
EP3050416A1 (en) Soil cultivation device
US20160081261A1 (en) Soil Cultivation Implement for Attachment to a Towing Vehicle
GB1605084A (en) Tractor implement hitch
US4116283A (en) Agricultural tillage equipment
US4186805A (en) Ground working implement
US4650006A (en) Auxiliary mounting device for cultivating implements
EP3000294A1 (en) Dynamically adjustable axle load distribution for an agricultural work machine
US3255828A (en) Three-point hitch linkage equalizer
US4595064A (en) Drag attachment for a disk
US4762182A (en) Auxiliary mounting device for cultivating implements
US4220350A (en) Tongue for connecting a draft implement to a towing vehicle
EP1825734B1 (en) Method and device for adjusting the tractive force of a working vehicle
WO2005120207A1 (en) Clutch arrangement between an implement and a vehicle
EP0928553A2 (en) Agricultural applying combine
DE804269C (en) Tractor with removable loading weight
DE19620015A1 (en) Agricultural soil-processing cultivation machine
EP1448043B1 (en) Soil compacter suited for connection of a tool
DE102011050195B4 (en) Drawn agricultural device
US2751835A (en) Tool carrier

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20100903

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130129