EP2802467A1 - Dispositif de couplage - Google Patents

Dispositif de couplage

Info

Publication number
EP2802467A1
EP2802467A1 EP12787640.7A EP12787640A EP2802467A1 EP 2802467 A1 EP2802467 A1 EP 2802467A1 EP 12787640 A EP12787640 A EP 12787640A EP 2802467 A1 EP2802467 A1 EP 2802467A1
Authority
EP
European Patent Office
Prior art keywords
coupling unit
coupling
unit
coupling device
hydraulic
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Withdrawn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
EP12787640.7A
Other languages
German (de)
English (en)
Inventor
Lars Kristensen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2802467A1 publication Critical patent/EP2802467A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/005—Electrical coupling combined with fluidic coupling
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58—Auxiliary devices
    • B60D1/62—Auxiliary devices involving supply lines, electric circuits, or the like
    • B60D1/64—Couplings or joints therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D2001/001—Traction couplings; Hitches; Draw-gear; Towing devices specially adapted for use on vehicles other than cars
    • B60D2001/008—Traction couplings; Hitches; Draw-gear; Towing devices specially adapted for use on vehicles other than cars specially adapted for implements, e.g. towed tools

Definitions

  • the present invention relates to a coupling device for coupling and decoupling a unit which is to be pulled by a vehicle. More specifically, the invention relates to a coupling device for coupling and decoupling a towable work tool which is to be pulled by a work vehicle, primarily a tractor.
  • US 6390490 Bl describes a mechanical coupling device for quick coupling and decoupling between a work tool and a tractor, where part of the coupling device is mounted on the tractor and part of the coupling device is mounted on the work tool.
  • DE 4132889 Al shows a coupling device with electrical and hydraulic connection between a vehicle and a work tool.
  • These coupling devices provide mechanical coupling between a tractor and a work tool. In addition to the mechanical coupling between the tractor and the work tool that the tractor is to pull, it is, in easily most situations, most often necessary that the tractor's electrical system is connected to the electrical system of the work tool.
  • This connection is done manually in that the driver of the tractor steps out of the tractor and connects the tractor's electrical system to the work tool's electrical system by connecting an electric plug from the tractor to a corresponding electric plug on the work tool.
  • This procedure can be extremely time-consuming. When grass for example is cut from grass fields, as much as up to 80 wagons can be filled during a work day. Each time a wagon is full, the wagon must be replaced, and it is required that the electrical system of the tractor is connected to the wagon's electrical system. Each replacement takes up to 3 minutes and since the driver of the tractor must get out of the tractor each time a wagon is to be replaced, the replacement procedure alone can take up to 4 hours during a day.
  • the coupling device comprises an arm, on which the first coupling unit is movably mounted, it is possible to connect a first coupling unit, which is movably mounted on a work tool (e.g. a wagon) to a second coupling unit on a work vehicle (e.g. a tractor).
  • a work tool e.g. a wagon
  • a work vehicle e.g. a tractor
  • the first coupling unit may be placed on the arm while the second coupling unit is mounted on the work vehicle.
  • the arm can be arranged in different ways, but it is preferred that the arm reaches out in a direction such that the first coupling unit easily and without hindrance can be mounted on the arm, and that the first coupling unit subsequently can be connected with the second coupling unit.
  • the coupling device according to the invention is arranged to couple and decouple a work tool to and from a work vehicle and the coupling device comprises a first coupling unit arranged to be hydraulically connected to a second coupling unit.
  • the first coupling unit comprises means for connection arranged to establish hydraulic and electrical connection to the second coupling unit.
  • the fist coupling unit comprises connection means arranged to at the same time establish hydraulic and electrical connection to the second coupling unit.
  • the first coupling unit comprises one or more plug connections that are arranged to be connected to corresponding plug connections on the second coupling unit by moving the first coupling unit relative to the second coupling unit. In this way, it is possible to provide a simple and robust coupling device.
  • the first coupling unit comprises one or more plug connections arranged to be connected to corresponding plug connections on the second coupling unit via linear movement of the first coupling unit relative to the second coupling unit.
  • a linear movement makes it possible to provide a very simple and robust coupling device.
  • the coupling device comprises a hydraulic connection where hydraulic hoses are brought into a grip with each other.
  • the first coupling unit comprises a first magnetic plate and that the second coupling unit comprises a second magnetic plate, and that the first magnetic plate is arranged to abut against the second magnetic plate and thus provide a positioning of the first coupling unit relative to the second coupling unit.
  • the two magnetic plates facilitate a very precise and quick positioning of the first coupling unit relative to the second coupling unit.
  • a number of hydraulic hoses are connected to the first coupling unit and that the first coupling unit comprises a number of connection units for connection of hydraulic hoses and that one or more electrical cables are connected to the first coupling unit and that the first coupling unit comprises one or more electric contacts for connection of one or more electrical cables.
  • This construction ensures that the coupling device can be used for coupling of easily the majority of agricultural machines to tractors.
  • first coupling unit is arranged to grip into the second coupling unit such that the first coupling unit is coupled to and mechanically connected with the second coupling unit, and that the second coupling unit is mounted on the work vehicle.
  • suspension arranged to be mounted on the work vehicle and that the second coupling unit is attached to the suspension.
  • the suspension makes it possible to mount the second coupling unit on various types of work vehicles.
  • the suspension can
  • the second coupling unit can
  • the coupling device comprises at least one bar assembly that during use of the coupling device mainly extends vertically and that an arm is mounted on the bar assembly.
  • the bar assembly may comprise one or more bars which can be parallel.
  • the coupling device comprises a locking device which is arranged to bring the first coupling unit into a grip with the second coupling unit by moving the first coupling unit relative to the second coupling unit.
  • the locking device can ensure that the first coupling unit is brought into a grip with the second coupling device, such that a precise and complete connection between the first coupling unit and the second coupling unit is provided.
  • the locking device can advantageously be fully automatic, such that the driver of the work vehicle does not have to perform manual actions to ensure that a precise and complete coupling is established between the first coupling unit and the second coupling unit.
  • the locking device can for example comprise a hydraulically driven locking arm, which presses the first coupling unit against the second coupling unit, such that a coupling is established between the first coupling unit and the second coupling unit.
  • Fig. 1 shows a schematic illustration of a coupling device
  • FIG. 2 illustrates how a work tool is coupled to a tractor by using a coupling device according to the invention
  • Fig. 3 shows a schematic illustration of a coupling device
  • Fig. 4 shows a schematic drawing of a plug connection unit to a coupling device according to the invention
  • Fig. 5 shows a schematic drawing of a second plug connection unit to a coupling device according to the invention.
  • Fig. 1 is a schematic illustration of a coupling device 2 according to the invention.
  • the coupling device 2 is used to couple a tractor 4 to a wagon 6.
  • the wagon 6 is mechanically coupled to the tractor 4.
  • the wagon 6 is additionally hydraulically connected to the tractor's hydraulic system via hydraulic hoses 24 and electrically connected to the tractor's electrical system via electrical cables 26.
  • the coupling device 2 comprises a first coupling unit, which is arranged to establish hydraulic and electrical connection to the second coupling unit, which is illustrated in Figures 2-4.
  • Fig. 2 shows how a work tool 6 is connected to a tractor 4 with the aid of a coupling device 2 according to the invention.
  • Fig 2 a) shows a coupling device 2 according to the invention.
  • the coupling device 2 consists of a first coupling unit 12 and a second coupling unit 14.
  • the first coupling unit 12 hangs from an slightly askew arm 18 mounted on a vertically oriented bar assembly 20.
  • the bar assembly 20 is attached to a bracket 22, which is a part of the work tool 6.
  • the work tool 6 can for example be a wagon or a forage harvester.
  • a foot 8 is mounted on the bracket 22, and the foot 8 rests on the underlayer 42.
  • the first coupling unit 12 is hydraulically connected to the work tool 6 via hydraulic hoses 24 and electrically connected to the work tool 6 via electrical cables 26.
  • a pulling device 10 is arranged at the tip of the bracket 22. This pulling device 10 can be coupled mechanically to a
  • a suspension 16 is mounted on which the second coupling unit 14 is mounted.
  • the tractor 2 shall reverse up to the work tool 6 as shown in Fig. 2 b).
  • the suspension is moved higher up than shown in Fig. 2 a).
  • the second coupling unit 14 is not yet put into a grip with the first coupling unit 12.
  • the second coupling unit 14 becomes capable of lifting the first coupling unit 12 free from the arm 18 on which the first coupling unit 12 is mounted.
  • the second coupling unit 14 comprises a holding device 46 and a locking arm 44 rotatably mounted on the holding device 46.
  • the second coupling unit 14 is brought into a grip with the first coupling unit 12.
  • the first coupling unit 12 is, by rotation of the locking arm 44 in a clockwise direction, brought into a grip with the holding device 46 of the second coupling unit 14. This rotation is provided by activating a hydraulically driven piston (see Fig 3), which is arranged to provide the desired rotation of the locking arm 18.
  • the suspension 16 is displaced downwards in a vertical direction and the pulling device 10 is mechanically coupled to a corresponding pulling device on the tractor 4.
  • the tractor 4 is hydraulically connected to the work tool 6 via hydraulic hoses 24 and electrically connected to the work tool 6 via electrical cables 26.
  • the foot 8 on the bracket 22 is raised above the underlayer 42. This can be done by moving the suspension 16 upwards in a vertical direction, as the pulling device 10 is mechanically coupled to a corresponding pulling device on the suspension 16.
  • Fig. 3 is a schematic illustration of the coupling device 2 shown in Fig. 2.
  • the work tool 6 is provided with a bracket 22, which is supported by a foot 8.
  • a vertically mounted bar assembly 20 is attached to the upper side of the bracket 22 and an arm 18 extends at an angle upwards from the distant end of the bar device 20.
  • a first coupling unit 12 is mounted on the free end of the arm 18.
  • the first coupling unit 12 comprises a hydraulic coupling unit 38 with three studs, which fit down into and can be brought into a grip with three corresponding cylindrical holes in a second hydraulic coupling unit 40 from a second coupling unit 14.
  • An electrical cable 26 extends from the work tool 6 to the first coupling unit, where an electrical connection is established between the work tool 6 and the first coupling unit 12.
  • Two hydraulic hoses 24 extend from the work tool 6 to the first coupling unit and connect the work tool 6 with the first coupling unit 12 hydraulically.
  • the second coupling unit 14 comprises a holding device 46 and a locking arm 44 rotatably mounted on the holding device 46.
  • a hydraulically driven piston 48 connects the lowest free end of the holding device and the lowest free end of the locking arm.
  • connection unit consists of a first part with a hydraulic coupling unit 38 with three studs and an electrical plug connection 30.
  • Fig. 5 shows a possible embodiment of a plug connection unit according to the invention.
  • the plug connection unit comprises the same elements as the plug connection unit shown in Fig. 4.
  • Fig. 5 a) the plug connection unit's first part and second part are not connected, whereas the plug connection unit's first part and second part are connected to each other in Fig. 5 b).
  • the hydraulic coupling unit 38 comprising three studs and the electrical plug connection 30 are in a grip with the corresponding hydraulic coupling unit 40 comprising three cylindrical studs and the electric plug connection 28, respectively.
  • the first part comprises a first magnetic plate 32, which is arranged to abut against a second corresponding magnetic plate 34.
  • the two magnetic plates shall be used to position the two parts of the plug connection unit in relation to each other, the two sides of the magnets that are to be brought in contact with each other should be able to attract each other. Therefore the two sides should have different polarity (i.e. south pole turned towards north pole).
  • the second magnetic plate 34 is attached to the plug connection unit's second part, which consists of a hydraulic coupling unit 40 with three cylindrical studs and an electric plug connection 28.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Zoology (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transportation (AREA)
  • Agricultural Machines (AREA)

Abstract

L'invention porte sur un dispositif de couplage (2) pour coupler et découpler un outil de travail (6) à un véhicule de travail (4) et à partir de celui-ci, lequel dispositif de couplage (2) comprend une première unité de couplage (12) agencée de façon à être couplée hydrauliquement à une seconde unité de couplage (14). La première unité de couplage (12) comprend des moyens de liaison (28) agencés de façon à établir une liaison hydraulique et électrique avec la seconde unité de couplage (14).
EP12787640.7A 2011-10-31 2012-10-31 Dispositif de couplage Withdrawn EP2802467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100840 2011-10-31
PCT/DK2012/000118 WO2013064148A1 (fr) 2011-10-31 2012-10-31 Dispositif de couplage

Publications (1)

Publication Number Publication Date
EP2802467A1 true EP2802467A1 (fr) 2014-11-19

Family

ID=47191460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12787640.7A Withdrawn EP2802467A1 (fr) 2011-10-31 2012-10-31 Dispositif de couplage

Country Status (2)

Country Link
EP (1) EP2802467A1 (fr)
WO (1) WO2013064148A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014002376B3 (de) * 2013-12-18 2015-04-02 Thomas Mösl Automatisches Kupplungssystem und Fahrzeug mit einem solchen Kupplungssystem
AT514962B1 (de) * 2014-05-22 2015-05-15 Johann Gangl Vorrichtung zum Verbinden eines Arbeitsgerätes mit einer Zugmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368899A (en) * 1981-03-16 1983-01-18 Kansas State University Research Foundation Hitch mechanism for tractors and implements
US4738463A (en) * 1987-02-24 1988-04-19 Deere & Company Automatically coupling fluid connector for a hitch
DE4132889A1 (de) 1990-10-05 1992-04-09 Erwin Roeder Vorrichtung zum kuppeln eines antriebsfahrzeugs, insbes. schleppers, mit einem vom antriebsfahrzeug zu tragenden oder zu ziehenden geraet, wie anbaugeraet oder anhaenger
US6390490B1 (en) 2001-03-22 2002-05-21 Van Campbell Quick connect tractor hitch coupling
US6988560B2 (en) 2003-10-29 2006-01-24 Cnh America Llc Quick attachment system
US7290977B2 (en) * 2005-03-09 2007-11-06 Clark Equipment Company Powered coupling of attachment hydraulics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013064148A1 *

Also Published As

Publication number Publication date
WO2013064148A1 (fr) 2013-05-10

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