EP3935302A1 - Connecting means - Google Patents

Connecting means

Info

Publication number
EP3935302A1
EP3935302A1 EP20712506.3A EP20712506A EP3935302A1 EP 3935302 A1 EP3935302 A1 EP 3935302A1 EP 20712506 A EP20712506 A EP 20712506A EP 3935302 A1 EP3935302 A1 EP 3935302A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
consumer
pressure
supply device
pressure supply
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Withdrawn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
EP20712506.3A
Other languages
German (de)
French (fr)
Inventor
Maximilian GRAF VON SPEE-MIRBACH
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.)
Hydac Mobilhydraulik GmbH
Original Assignee
Hydac Mobilhydraulik GmbH
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 Hydac Mobilhydraulik GmbH filed Critical Hydac Mobilhydraulik GmbH
Publication of EP3935302A1 publication Critical patent/EP3935302A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2024—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means the throttling means being a multiple-way valve
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
    • G05D16/204—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means the plurality of throttling means being arranged in parallel
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/01—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof

Definitions

  • the invention relates to a connection device between at least one hydraulic pressure supply device, such as the Druckversor supply device of a mobile work machine, and at least one hydraulic consumer, such as a hydraulically actuated work tool at least one attachment, with hydraulic connections on the side of the supply device and correspondingly couplable hydraulic connections on the side of the respective Consumer.
  • at least one hydraulic pressure supply device such as the Druckversor supply device of a mobile work machine
  • at least one hydraulic consumer such as a hydraulically actuated work tool at least one attachment
  • the supply of hydraulically operable work equipment by the pressure supply device of a mobile work machine, in particular carried out as a tractor, is common especially in agricultural and forestry machine use.
  • Add-on devices are used for different cultivation of arable land, field supply with seeds or fertilizers and / or lifting or stacking devices that can be operated by means of working cylinders or hydraulic motors. These devices can be provided as attachments on tractors such as tractors themselves or on a trailer that can be coupled to it.
  • tractors and Tractors For a mobile work machine designed as a construction machine and associated attachments, the statements regarding tractors and Tractors. In any case, a relatively large number of connec tions in the form of connections located on hydraulic hoses is to be made.
  • EP 2 554 884 B1 is state of the art to provide markings on hydraulic hoses that provide the operator with an indication of the type of consumer to be supplied. Despite such a label, the problem of the risk of confusion and the harmful consequences of possible incorrect connections remain unsolved.
  • the invention has the task of providing a connecting device of the type mentioned above, which enables the production of the coupling connections in a FITS simple and safe manner.
  • the characterizing part of claim 1 there is an essential feature of the invention that by means of the consumer Information storage data relating to the respective consumer are passed on to the respective assignable supply device, so that in the coupled state of the hydraulic connections assigned to one another, the respective consumer is individually supplied with hydraulic medium of predeterminable pressure and volume flow from its supply device. Because the data of the respective consumer of the pressure supply device is transmitted from the information memory and the control device of the pressure supply device is available, it is able to supply the respective consumer based on its demand data and thus needs-based and safe. This means that the operator can connect the hydraulic hoses without having to pay attention to the connections. The coupling processes can not only be carried out quickly and easily, but, since a malfunction is excluded, they can also be carried out in a particularly reliable manner.
  • a consumer-side connection of the pressure supply is used to operate a consumer or to provide load-sensing pressure, with a further consumer-side connection of the same consumer enabling the respective hydraulic medium to be returned to the pressure supply device.
  • the data transfer not only ensures that the respective consumer is supplied with pressure as required, but also that the return flow of the hydraulic medium takes place as required with any connection of the hoses.
  • the pressure supply device can have a pressure source, such as a hydraulic pump, and a return line to a storage reservoir, such as a tank.
  • the hydraulic pump can advantageously be actuated by the main drive motor of the work machine or by means of an auxiliary drive of the work machine.
  • the pressure supply device can be directly controllable by a control device or, additionally or alternatively, the control device can control a valve device which is connected between the pressure supply device and the hydraulic connections on the side of the pressure supply device.
  • the arrangement can advantageously be such that the respective valve device is formed from individual valves or from a proportional valve each, preferably from a proportional directional valve, particularly preferably from a 4/3-way proportional valve.
  • each valve can be assigned to one of the hydraulic hoses for flow or return of any consumer, while proportional valves can be assigned to both hoses of a respective hose pair.
  • the arrangement with individual valves can advantageously be designed so that at least four individual valves are provided, the first two of which are designed as 3-way pressure regulators and the other two as 2-way proportional valves, each of which is connected on the output side to one of the hydraulic valves Connections are connectable and each of which is provided on the input side with pressure from one of the two 3-way pressure regulators for pressurizing the respective hydraulic connection. It is thus possible to control the two hydraulic connections independently of one another, so that both hydraulic connections can be pressurized at the same time or the pressure can be relieved towards the tank. In addition, this arrangement enables a connector of the hydraulic hose to be connected to any of several hydraulic connections on the machine.
  • the control unit of the machine then automatically recognizes on the basis of the characteristic data or information from the information memory which hydraulic hose is connected and switches the associated valve device accordingly.
  • the 2-way proportional valves can in particular be 2/2-way proportional valves.
  • the respective information memory advantageously forwards its data to a controller, which controls the pressure supply device and / or the valve device.
  • the required hydraulic characteristics are passed on by the controller to the control unit of the tractor unit so that the required parameters of the associated hydraulic hose can be set.
  • the controller can also superimpose a signal that can be entered by the operator of the tractor to ensure that the maximum values of consumers connected to the relevant hydraulic hoses are not exceeded.
  • the information memory can transmit the data to the controller via cable or wirelessly (transponder technology).
  • the latter can advantageously be done via a Bluetooth connection.
  • the arrangement can advantageously be such that the respective information memory is arranged on a consumer-side hydraulic hose or is integrated into the consumer-side connection.
  • the storage tank is advantageously protected against harmful external influences.
  • the invention also relates to a method for operating a connec tion device according to one of claims 1 to 9, wherein the process of driving the features of claim 10 has.
  • the invention is tert erläu in detail with reference to the drawing.
  • connection device Show it: 1 a to 1 d in a highly schematically simplified representation of four embodiments of the connection device according to the invention, in each case the connection area of an individual hydraulic hose belonging to an attachment and a partial connection area of a mobile work machine;
  • the supply-side for example a (not shown) mobile work machine such as a tractor or construction machine
  • associated hydraulic connections are denoted by 2
  • hydraulic hoses 4 can be coupled, of which only the one connector 6 aufwei transmitting end portion is shown.
  • the hydraulic hoses 4 are connected to a supply connection of an attachment (not shown) for its pressure supply or to the return connection of an attachment to return the hydraulic medium.
  • an information memory 8 is attached to each hydraulic hose 4 in the vicinity of the connector 6, in the electronic circuit board of which the characteristic data relating to the associated hydraulic hose 4 are stored, i.e. the information as to whether it is a pressure supply, a return or one explained below Load sensing hose. Depending on whether it is a pressure supply or return hose, the information is stored as to which supply pressure and volume flow are required. In the case of the game of Fig.1 a, these data reach the coupling process via a cable 10 and a plug 12 to the control unit of the machine.
  • the consumers can each be designed as a double-acting working cylinder, a hydraulic motor or a single-acting working cylinder. Only a single hose leads to the single-acting working cylinder, which can alternately be fluidically connected to either a pressure connection P or a tank connection T. Irrespective of which hose 4 of which consumer is in coupling connection with the respective hydraulic connection 2, trouble-free operation is therefore ensured.
  • FIG. 1 b differs from the example of FIG. 1a only in that the information memory 8 is not attached to the hose 4, but is integrated into the connector 6.
  • the electronics of the information memory 8 is better protected from harmful effects from the outside.
  • the information memory 8 is also integrated in the connector 6 if.
  • the signal transmission to the work machine is wireless.
  • Transmission systems suitable for this are state of the art. For example, systems that recognize a passive transponder in the board of the information memory 8 and the stored data for the control unit of the working machine.
  • a passive transponder is such a radio communication device that draws its energy for transmitting the parameters to the control device from an electrical field of the control device or a transmission unit connected to it.
  • an active transponder can also be used, which in this respect is independent of an electrical field.
  • the transponder of the respective hose 4 can have an independent energy supply from the other transponders, or a central energy supply is provided which supplies several transponders with power. Due to the greater energy that is available with active transponders, they are particularly well suited to transferring characteristic data, the required / permissible values of which change depending on the operating situation.
  • Such a characteristic value which changes depending on the operating situation, is the load-sensing pressure, which can be applied to the connection of the load-sensing hose.
  • the load sensing pressure reports the load pressure requested by the consumers to the hydraulic pump of the mobile machine.
  • the hydraulic pump is thus enabled to adapt its pressure and / or volume flow to the pressure and / or volume flow requested by the consumer, so that hydraulic power losses are minimized.
  • the load-sensing pressure can therefore be reported via a radio link or a cable from the information memory s and / or hydraulically via the load-sensing hose.
  • the information memory 8 can also be used from finally to identify the load-sensing hose who.
  • the characteristic data are transmitted wirelessly from the information memory 8 to the control device of the working machine.
  • the information memory 8 is a separate component from the connector 6, which is attached to the hose 4.
  • the information memory 8 can be spaced apart from the connector 6 in accordance with the schematic representation.
  • FIG. 2 illustrates an embodiment in which two hydraulic hoses 4 from each of the consumers are mechanically connected to one another to form a hose pair 1 6, one hose or hose pairs 1 6 forming the pressure hose 18 and the other hose forming the return hose 20.
  • a coupling pair with two hydraulic connections 2 is provided on the coupling area at the interface designated by 22 in FIG. 2, to which a proportional valve 24 is assigned for each coupling pair.
  • this is formed by a 4/3-way proportional valve which can be actuated electrically and controlled by a controller 26 of the control unit of the work machine.
  • this receives the characteristics of the hoses 18, 20 of the hose pair 1 6 from the information memory s of the respective hose 1 8, 20.
  • the proportional valve 24 is on the input side in connection with the pressure port P and the tank port T of the pressure supply device of the machine the output side with one and the other hydraulic connection 2 of the coupling pair in question.
  • the hose pair 1 6 of any consumer can be connected to any of these coupling pairs.
  • the controller 1 6 Since the controller 1 6 recognizes from the characteristic data supplied by the information memory 8 which of the hoses 1 8, 20 is the pressure hose and which is the return hose, the controller 26 controls the directional control valve 24 in the corresponding valve position in which one of the hoses 18, 20 is connected to the pressure port P and the other with the tank port T. At the same time, the proportionality of the directional valve 24 provides the desired volume Power on. The needs-based supply is thereby ensured when any hose pairs 16 are connected to the connections 2 of any coupling pairs at the interface 22 of the working machine.
  • Fig. 3 shows a further embodiment which differs from the previous example with regard to the sub-connection area of the mobile work machine.
  • two 2/2-way proportional valves 28 and two 3-way pressure regulators 30 are provided.
  • Each of the two hydraulic connections 2 of a consumer is connected to the output side of one of the two 2/2-way proportional valves 28, so that the two hydraulic connections 2 can be supplied with pressure from pressure connection P independently of one another and / or to relieve pressure from the tank connection T can be connected.
  • the respective 2/2-way proportional valve 28 is connected on the input side to the output side of one of the two 3-way pressure regulators 30, which are each connected to the pressure supply connection P and the tank connection T on the input side.
  • Both the two 3-way pressure regulators 30 and the two 2/2-way proportional valves 28 are each operated by means of an electromagnetic actuator that is controlled by the controller 26 of the control unit of the Ar work machine.
  • both connections can be relieved to achieve a kind of floating position towards the tank connection T or both connections are subjected to at least part of the pressure from the supply connection P so that, for example, a piston of a double-acting working cylinder is clamped in a predeterminable position between two pressure chambers .
  • the information stores shown in FIGS. 1 a and 1 d are arranged in the vicinity of the connector 6 so that the cable 10 or the transmission path of the wireless connection is short. If a cable 10 is used, the risk of cable damage that exists under the rough working conditions of agricultural machinery and construction machinery is reduced.
  • the proximity between the information memory 8 and the connector 6 ensures that the identification data are transmitted without interference, although in particular ferromagnetic metal parts are in the immediate vicinity and are being moved.
  • the information memory 8 and the connector 6 are not in the vicinity of one another.
  • the connector 6 when connecting the attachment, can first be connected to the hydraulic connection 2 and then the connector 12 can be connected to the associated counterpart of the mobile work machine be coupled. In particular in the event that a tractor is used as the mobile work machine, two or more attachments can be connected to the same.
  • the mobile work machine can in particular also be designed as a construction machine.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A connecting means between at least one hydraulic pressure-supply device, such as the pressure-supply device of a machine, and at least one hydraulic consumer, such as a hydraulically actuable work tool of at least one add-on unit, with hydraulic connections (2) on the supply device and correspondingly coupleable hydraulic connections (6) on the respective consumer, is characterized in that, by means of consumer-side information memories (8), data relating to the respective consumer are passed on to the respectively assignable supply device, and therefore, in the coupled state of the mutually assigned hydraulic connections (2, 6), the respective consumer is supplied individually, by way of its supply device, with hydraulic medium of predeterminable pressure and volume flow.

Description

Verbindungsvorrichtung Connecting device
Die Erfindung betrifft eine Verbindungsvorrichtung zwischen mindestens ei ner hydraulischen Druckversorgungseinrichtung, wie der Druckversor gungseinrichtung einer mobilen Arbeitsmaschine, und mindestens einem hydraulischen Verbraucher, wie einer hydraulisch betätigbaren Arbeitsgerät- schaft mindestens eines Anbaugerätes, mit Hydraulikanschlüssen aufseiten der Versorgungseinrichtung und korrespondierend kuppelbaren Hydrau likanschlüssen aufseiten des jeweiligen Verbrauchers. The invention relates to a connection device between at least one hydraulic pressure supply device, such as the Druckversor supply device of a mobile work machine, and at least one hydraulic consumer, such as a hydraulically actuated work tool at least one attachment, with hydraulic connections on the side of the supply device and correspondingly couplable hydraulic connections on the side of the respective Consumer.
Die Versorgung hydraulisch betätigbarer Arbeitsgerätschaften durch die Druckversorgungseinrichtung einer insbesondere als Zugmaschine ausge führten mobilen Arbeitsmaschine ist insbesondere bei landwirtschaftlichem und forstwirtschaftlichem Maschineneinsatz üblich. Dabei kommen Anbau geräte für unterschiedliche Ackerboden-Bearbeitungen, Feldversorgung mit Saat- oder Düngemitteln und/oder Hub- oder Stapeleinrichtungen zum Ein- satz, die mittels Arbeitszylindern oder Hydromotoren betätigbar sind. Als Anbaugeräte können diese Gerätschaften an Zugmaschinen wie Traktoren selbst oder einem mit diesem kuppelbaren Hänger vorgesehen sein. Für eine als Baumaschine ausgeführte mobile Arbeitsmaschine und zugehörige Anbaugeräte gelten analog die Ausführungen betreffend Zugmaschinen und Traktoren. In jedem Fall ist eine verhältnismäßig große Anzahl von Verbin dungen in Form von an Hydraulikschläuchen befindlichen Anschlüssen her zustellen. Bei dem unterschiedlichen Bedarf der anzuschließenden Verbrau cher hinsichtlich Hydraulikdruck und Volumenstrom hat der Bediener sorg fältig darauf zu achten, dass die jeweiligen Verbraucher genau an den zuge ordneten Versorgungsanschluss der Zugmaschine angeschlossen werden. Fehlverbindungen, beispielsweise die Versorgung eines Verbrauchers mit einem unzulässigen Druckniveau und/oder Volumenstrom, können zu Fehl funktion oder Zerstörung führen. In Anbetracht der vielfach größeren An zahl von zu versorgenden Anbaugeräten und der entsprechenden Anzahl von Hydraulikschläuchen, führen die Anschlussvorgänge für den Bediener, der auf die richtige Auswahl der Hydraulikschläuche für die Verbindung mit den versorgungsseitigen Anschlüssen zu achten hat, zu einem beträchtli chen Zeit- und Arbeitsaufwand. Um für den Bediener die Auswahl von Hydraulikschläuchen für Kupplungsvorgänge zu erleichtern, ist es ausweis lich EP 2 554 884 B1 Stand der Technik, an Hydraulikschläuchen Markie rungen vorzusehen, die einen vom Bediener erkennbaren Hinweis auf die Art des zu versorgenden Verbrauchers liefern. Trotz einer solchen Kenn zeichnung bleibt das Problem der Verwechslungsgefahr und der durch mögliche Fehlanschlüsse schädlichen Folgen ungelöst. The supply of hydraulically operable work equipment by the pressure supply device of a mobile work machine, in particular carried out as a tractor, is common especially in agricultural and forestry machine use. Add-on devices are used for different cultivation of arable land, field supply with seeds or fertilizers and / or lifting or stacking devices that can be operated by means of working cylinders or hydraulic motors. These devices can be provided as attachments on tractors such as tractors themselves or on a trailer that can be coupled to it. For a mobile work machine designed as a construction machine and associated attachments, the statements regarding tractors and Tractors. In any case, a relatively large number of connec tions in the form of connections located on hydraulic hoses is to be made. With the different requirements of the consumers to be connected in terms of hydraulic pressure and volume flow, the operator must carefully ensure that the respective consumers are connected exactly to the assigned supply connection of the tractor. Incorrect connections, for example supplying a consumer with an impermissible pressure level and / or volume flow, can lead to malfunction or destruction. In view of the much larger number of attachments to be supplied and the corresponding number of hydraulic hoses, the connection processes for the operator, who has to pay attention to the correct selection of the hydraulic hoses for the connection with the supply-side connections, lead to a considerable amount of time and money Workload. In order to make it easier for the operator to select hydraulic hoses for coupling operations, EP 2 554 884 B1 is state of the art to provide markings on hydraulic hoses that provide the operator with an indication of the type of consumer to be supplied. Despite such a label, the problem of the risk of confusion and the harmful consequences of possible incorrect connections remain unsolved.
Im Hinblick auf diese Problematik stellt sich die Erfindung die Aufgabe, eine Verbindungsvorrichtung der eingangs genannten Gattung zur Verfü gung zu stellen, die die Herstellung der Kupplungsverbindungen auf beson ders einfache und sichere Weise ermöglicht. In view of this problem, the invention has the task of providing a connecting device of the type mentioned above, which enables the production of the coupling connections in a FITS simple and safe manner.
Erfindungsgemäß ist diese Aufgabe durch eine Verbindungsvorrichtung ge löst, die die Merkmale des Patentanspruchs 1 in seiner Gesamtheit aufweist. According to the invention this object is solved by a connecting device that has the features of claim 1 in its entirety.
Gemäß dem kennzeichnenden Teil des Patentanspruchs 1 besteht eine we sentliche Besonderheit der Erfindung darin, dass mittels verbraucherseitigen Informationsspeichern Daten, betreffend den jeweiligen Verbraucher, an die jeweils zuordenbare Versorgungseinrichtung weitergegeben sind, so dass im gekuppelten Zustand der einander zugeordneten Hydraulikan schlüsse der jeweilige Verbraucher individuell seitens seiner Versorgungs einrichtung mit Hydraulikmedium vorgebbaren Drucks und Volumenstroms versorgt ist. Dadurch, dass aus dem Informationsspeicher die Daten des je weiligen Verbrauchers der Druckversorgungseinrichtung übermittelt wer den und der Steuereinrichtung der Druckversorgungseinrichtung zur Verfü gung stehen, ist diese in der Lage, den jeweiligen Verbraucher aufgrund dessen Bedarfsdaten und dadurch bedarfsgerecht und sicher zu versorgen. Somit kann der Bediener die Hydraulikschläuche anschließen, ohne auf die Anschlüsse achten zu müssen. Die Kupplungsvorgänge lassen sich dadurch nicht nur schnell und einfach, sondern, da eine Fehlfunktion ausgeschlos sen ist, auch besonders betriebssicher durchführen. According to the characterizing part of claim 1, there is an essential feature of the invention that by means of the consumer Information storage data relating to the respective consumer are passed on to the respective assignable supply device, so that in the coupled state of the hydraulic connections assigned to one another, the respective consumer is individually supplied with hydraulic medium of predeterminable pressure and volume flow from its supply device. Because the data of the respective consumer of the pressure supply device is transmitted from the information memory and the control device of the pressure supply device is available, it is able to supply the respective consumer based on its demand data and thus needs-based and safe. This means that the operator can connect the hydraulic hoses without having to pay attention to the connections. The coupling processes can not only be carried out quickly and easily, but, since a malfunction is excluded, they can also be carried out in a particularly reliable manner.
Bei vorteilhaften Ausführungsbeispielen dient ein verbraucherseitiger An schluss der Druckversorgung zum Betätigen eines Verbrauchers oder dem Bereitstellen eines Load-Sensing-Drucks, wobei ein weiterer verbrauchersei tiger Anschluss desselben Verbrauchers die Rückführung des jeweiligen Hydraulikmediums zur Druckversorgungseinrichtung ermöglicht. Durch die Datenübertragung ist nicht nur sichergestellt, dass der jeweilige Verbrau cher bedarfsgerecht druckversorgt ist, sondern bei beliebigem Anschluss der Schläuche der Rücklauf des Hydraulikmediums bedarfsgerecht bei beliebi ger Anschlusswahl erfolgt. In advantageous embodiments, a consumer-side connection of the pressure supply is used to operate a consumer or to provide load-sensing pressure, with a further consumer-side connection of the same consumer enabling the respective hydraulic medium to be returned to the pressure supply device. The data transfer not only ensures that the respective consumer is supplied with pressure as required, but also that the return flow of the hydraulic medium takes place as required with any connection of the hoses.
Die Druckversorgungseinrichtung kann eine Druckquelle, wie eine Hydro- pumpe, und einen Rücklauf zu einem Vorratsspeicher, wie einem Tank, aufweisen. Die Hydropumpe kann mit Vorteil vom Haupt-Antriebsmotor der Arbeitsmaschine oder mittels eines Zusatzantriebes der Arbeitsmaschine betätigt sein. Die Druckversorgungseinrichtung kann von einem Steuergerät direkt an steuerbar sein oder zusätzlich oder alternativ kann das Steuergerät jeweils eine Ventileinrichtung ansteuern, die zwischen die Druckversorgungsein richtung und die Hydraulikanschlüsse aufseiten der Druckversorgungsein richtung geschaltet ist. The pressure supply device can have a pressure source, such as a hydraulic pump, and a return line to a storage reservoir, such as a tank. The hydraulic pump can advantageously be actuated by the main drive motor of the work machine or by means of an auxiliary drive of the work machine. The pressure supply device can be directly controllable by a control device or, additionally or alternatively, the control device can control a valve device which is connected between the pressure supply device and the hydraulic connections on the side of the pressure supply device.
Die Anordnung kann hierbei mit Vorteil so getroffen sein, dass die jeweilige Ventileinrichtung aus Einzelventilen oder aus jeweils einem Proportional ventil gebildet ist, vorzugsweise aus einem Proportional-Wegeventil, beson ders bevorzugt aus einem 4/3-Wege-Proportionalventil. Bei Einzelventilen ist jedes Ventil jeweils einem der Hydraulikschläuche für Vor- oder Rück lauf eines beliebigen Verbrauchers zuordenbar, während Proportionalven tile beiden Schläuchen eines jeweiligen Schlauchpaares zuordenbar sind. The arrangement can advantageously be such that the respective valve device is formed from individual valves or from a proportional valve each, preferably from a proportional directional valve, particularly preferably from a 4/3-way proportional valve. In the case of individual valves, each valve can be assigned to one of the hydraulic hoses for flow or return of any consumer, while proportional valves can be assigned to both hoses of a respective hose pair.
Die Anordnung mit Einzelventilen kann vorteilhaft so ausgeführt sein, dass zumindest vier Einzelventile vorgesehen sind, von denen die ersten beiden als 3-Wege-Druckregler und die anderen beiden als 2-Wege-Proportional- ventile ausgeführt sind, die jeweils ausgangsseitig mit einem der Hydrau likanschlüsse verbindbar sind und denen jeweils eingangsseitig Druck von einem der beiden 3-Wege-Druckregler zur Druckbeaufschlagung des jewei ligen Hydraulikanschlusses zur Verfügung gestellt ist. Somit ist es möglich, die beiden Hydraulikanschlüsse unabhängig voneinander anzusteuern, so- dass beide Hydraulikanschlüsse zugleich mit Druck beaufschlagt oder zum Tank hin druckentlastet werden können. Außerdem ermöglicht es diese An ordnung, dass ein Anschlussstück des Hydraulikschlauchs an einem beliebi gen von mehreren Hydraulikanschlüssen der Arbeitsmaschine angeschlos sen werden kann. Das Steuergerät der Arbeitsmaschine erkennt dann auf grund der Kenndaten bzw. Informationen vom Informationsspeicher selbst- stätig, welcher Hydraulikschlauch angeschlossen ist und schaltet die zuge hörige Ventileinrichtung entsprechend. Die 2-Wege-Proportionalventile können dabei insbesondere 2/2-Wege-Proportionalventile sein. Mit Vorteil gibt der jeweilige Informationsspeicher seine Daten an einen Controller weiter, der die Druckversorgungseinrichtung und/oder die Ventileinrichtung ansteuert. Durch den Controller werden die jeweils gefor derten hydraulischen Kenndaten an das Steuergerät der Zugmaschine wei tergegeben, damit die geforderten Parameter des jeweils zugeordneten Hyd- raulikschlauchs eingestellt werden. Der Controller kann auch ein vom Be diener der Zugmaschine eingebbares Signal überlagern, um sicherzustellen, dass die Maximalwerte von an betreffenden Hydraulikschläuchen ange schlossenen Verbrauchern nicht überschritten werden. The arrangement with individual valves can advantageously be designed so that at least four individual valves are provided, the first two of which are designed as 3-way pressure regulators and the other two as 2-way proportional valves, each of which is connected on the output side to one of the hydraulic valves Connections are connectable and each of which is provided on the input side with pressure from one of the two 3-way pressure regulators for pressurizing the respective hydraulic connection. It is thus possible to control the two hydraulic connections independently of one another, so that both hydraulic connections can be pressurized at the same time or the pressure can be relieved towards the tank. In addition, this arrangement enables a connector of the hydraulic hose to be connected to any of several hydraulic connections on the machine. The control unit of the machine then automatically recognizes on the basis of the characteristic data or information from the information memory which hydraulic hose is connected and switches the associated valve device accordingly. The 2-way proportional valves can in particular be 2/2-way proportional valves. The respective information memory advantageously forwards its data to a controller, which controls the pressure supply device and / or the valve device. The required hydraulic characteristics are passed on by the controller to the control unit of the tractor unit so that the required parameters of the associated hydraulic hose can be set. The controller can also superimpose a signal that can be entered by the operator of the tractor to ensure that the maximum values of consumers connected to the relevant hydraulic hoses are not exceeded.
Der Informationsspeicher kann die Daten an den Controller mittels Kabel o- der drahtlos (Transpondertechnik) übermitteln. Mit Vorteil kann Letzteres über eine Bluetooth-Verbindung erfolgen. The information memory can transmit the data to the controller via cable or wirelessly (transponder technology). The latter can advantageously be done via a Bluetooth connection.
Mit Vorteil kann die Anordnung hierbei so getroffen sein, dass der jeweilige Informationsspeicher auf einem verbraucherseitigen Hydraulikschlauch an geordnet oder in den verbraucherseitigen Anschluss integriert ist. Bei Ein bau in den Anschluss ist der Speicher mit Vorteil gegen schädliche Einwir kungen von außen her geschützt. The arrangement can advantageously be such that the respective information memory is arranged on a consumer-side hydraulic hose or is integrated into the consumer-side connection. When installed in the connection, the storage tank is advantageously protected against harmful external influences.
Gegenstand der Erfindung ist auch ein Verfahren zum Betrieb einer Verbin dungsvorrichtung nach einem der Patentansprüche 1 bis 9, wobei das Ver fahren die Merkmale des Patentanspruchs 10 aufweist. The invention also relates to a method for operating a connec tion device according to one of claims 1 to 9, wherein the process of driving the features of claim 10 has.
Nachstehend ist die Erfindung anhand der Zeichnung im Einzelnen erläu tert. The invention is tert erläu in detail with reference to the drawing.
Es zeigen: Fig. 1 a bis 1 d in stark schematisch vereinfachter Darstellung von vier Ausführungsformen der erfindungsgemäßen Verbin dungsvorrichtung jeweils den Anschlussbereich eines einzelnen, einem Anbaugerät zugehörigen Hydraulik- schlauchs und einen Teil-Anschlussbereich einer mobi len Arbeitsmaschine; und Show it: 1 a to 1 d in a highly schematically simplified representation of four embodiments of the connection device according to the invention, in each case the connection area of an individual hydraulic hose belonging to an attachment and a partial connection area of a mobile work machine; and
Fig. 2 und Fig. 3 jeweils in entsprechend stark schematisch vereinfach ter Darstellung von einer weiteren Ausführungsform le- diglich den Anschlussbereich eines einem einzelnen2 and 3 each in a correspondingly highly schematically simplified representation of a further embodiment, only the connection area of a single one
Verbraucher zugehörigen Hydraulikschlauchpaares in Anschlussverbindung mit einem Teil-Anschlussbereich einer mobilen Arbeitsmaschine. Consumer associated hydraulic hose pair in connection with a partial connection area of a mobile work machine.
In den Figuren sind versorgerseitige, beispielsweise einer (nicht gezeigten) mobilen Arbeitsmaschine, wie einer Zug- oder Baumaschine, zugehörige Hydraulikanschlüsse mit 2 bezeichnet, mit denen Hydraulikschläuche 4 kuppelbar sind, von denen jeweils nur der ein Anschlussstück 6 aufwei sende Endabschnitt dargestellt ist. Die Hydraulikschläuche 4 sind mit einem Versorgungsanschluss eines (nicht gezeigten) Anbaugeräts zu dessen Druck versorgung oder mit dem Rücklaufanschluss eines Anbaugeräts zur Rück führung des Hydraulikmediums in Verbindung. In the figures, the supply-side, for example a (not shown) mobile work machine such as a tractor or construction machine, associated hydraulic connections are denoted by 2, with which hydraulic hoses 4 can be coupled, of which only the one connector 6 aufwei transmitting end portion is shown. The hydraulic hoses 4 are connected to a supply connection of an attachment (not shown) for its pressure supply or to the return connection of an attachment to return the hydraulic medium.
Bei der Ausführungsform von Fig. 1 a ist an jedem Hydraulikschlauch 4 in der Nähe des Anschlussstücks 6 ein Informationsspeicher 8 angebracht, in dessen Elektronikplatine die den zugehörigen Hydraulikschlauch 4 betref fenden Kenndaten abgelegt sind, also die Information, ob es sich um einen Druckversorgungs-, einen Rückführ- oder einen nachstehend erläuterten Load-Sensing-Schlauch handelt. Je nachdem, ob es sich um einen Druckver sorgung- oder Rückführschlauch handelt, sind die Information abgelegt, welcher Versorgungsdruck und Volumenstrom erforderlich sind. Beim Bei spiel von Fig.1 a gelangen diese Daten beim Kupplungsvorgang über ein Ka bel 10 und einen Stecker 12 zum Steuergerät der Arbeitsmaschine. Dieses verarbeitet die Daten, um die Druckversorgungseinrichtung der Arbeitsma schine, vorzugsweise mittels einer Ventileinrichtung, derart anzusteuern, dass am betreffenden Hydraulikanschluss 2 die jeweils dem Bedarf des dem Schlauch 4 zugehörigen Verbrauchers entsprechenden Drücke und/oder Volumenströme zur Verfügung stehen. Die Verbraucher können jeweils als doppeltwirkende Arbeitszylinder, als Hydromotor oder als einfachwirkende Arbeitszylinder ausgeführt sein. Zum einfachwirkenden Arbeitszylinder führt nur ein einziger Schlauch, der wechselweise entweder mit einem Druckanschluss P oder einem Tankanschluss T fluidisch verbunden werden kann. Ungeachtet dessen, welcher Schlauch 4 welchen Verbrauchers mit dem jeweiligen Hydraulikanschluss 2 in Kupplungsverbindung kommt, ist daher der störungsfreie Betrieb sichergestellt. In the embodiment of Fig. 1 a, an information memory 8 is attached to each hydraulic hose 4 in the vicinity of the connector 6, in the electronic circuit board of which the characteristic data relating to the associated hydraulic hose 4 are stored, i.e. the information as to whether it is a pressure supply, a return or one explained below Load sensing hose. Depending on whether it is a pressure supply or return hose, the information is stored as to which supply pressure and volume flow are required. In the case of the game of Fig.1 a, these data reach the coupling process via a cable 10 and a plug 12 to the control unit of the machine. This processes the data in order to control the pressure supply device of the work machine, preferably by means of a valve device, in such a way that the pressures and / or volume flows corresponding to the needs of the consumer associated with the hose 4 are available at the relevant hydraulic connection 2. The consumers can each be designed as a double-acting working cylinder, a hydraulic motor or a single-acting working cylinder. Only a single hose leads to the single-acting working cylinder, which can alternately be fluidically connected to either a pressure connection P or a tank connection T. Irrespective of which hose 4 of which consumer is in coupling connection with the respective hydraulic connection 2, trouble-free operation is therefore ensured.
Die Ausführungsform von Fig. 1 b unterscheidet sich vom Beispiel von Fig.1 a lediglich insofern, als der Informationsspeicher 8 nicht an den Schlauch 4 angebaut, sondern in das Anschlussstück 6 integriert ist. Insbe sondere bei rauen Betriebsbedingungen, wie bei land- und forstwirtschaftli chem Einsatz der Anbaugeräte oder bei einem Einsatz auf der Baustelle, ist dadurch die Elektronik des Informationsspeichers 8 vor schädlichen Einwir kungen von außen her besser geschützt. The embodiment of FIG. 1 b differs from the example of FIG. 1a only in that the information memory 8 is not attached to the hose 4, but is integrated into the connector 6. In particular, in harsh operating conditions, such as agricultural and forestry chem use of the attachments or when used on the construction site, the electronics of the information memory 8 is better protected from harmful effects from the outside.
Bei der Ausführungsform von Fig. 1 c ist der Informationsspeicher 8 eben falls in das Anschlussstück 6 integriert. Im Unterschied zum vorherigen Bei spiel erfolgt die Signalübertragung an die Arbeitsmaschine jedoch drahtlos. Hierfür geeignete Übertragungssysteme sind Stand der Technik. Beispiels weise Systeme, die einen passiven Transponder in der Platine des Informati onsspeichers 8 erkennen und die gespeicherten Daten für das Steuergerät der Arbeitsmaschine auslesen. Bei einem passiven Transponder handelt es sich um ein solches Funk-Kommunikationsgerät, das seine Energie zur Übertragung der Kenngrößen an das Steuergerät aus einem elektrischen Feld des Steuergerätes bzw. einer mit demselben verbundenen Sendeein heit bezieht. In the embodiment of FIG. 1 c, the information memory 8 is also integrated in the connector 6 if. In contrast to the previous example, the signal transmission to the work machine is wireless. Transmission systems suitable for this are state of the art. For example, systems that recognize a passive transponder in the board of the information memory 8 and the stored data for the control unit of the working machine. A passive transponder is such a radio communication device that draws its energy for transmitting the parameters to the control device from an electrical field of the control device or a transmission unit connected to it.
Alternativ kann auch ein aktiver Transponder Anwendung finden, der inso fern von einem elektrischen Feld unabhängig ist. Dabei kann der Transpon der des jeweiligen Schlauchs 4 eine von den anderen Transpondern unab hängige Energieversorgung haben oder es ist eine zentrale Energieversor gung vorgesehen, die mehrere Transponder mit Strom versorgt. Aufgrund der größeren Energie, die bei aktiven Transpondern zur Verfügung steht, sind diese besonders gut geeignet, um Kenndaten zu übertragen, deren ge forderte/zulässige Werte sich je nach Betriebssituation ändern. Alternatively, an active transponder can also be used, which in this respect is independent of an electrical field. The transponder of the respective hose 4 can have an independent energy supply from the other transponders, or a central energy supply is provided which supplies several transponders with power. Due to the greater energy that is available with active transponders, they are particularly well suited to transferring characteristic data, the required / permissible values of which change depending on the operating situation.
Ein solcher sich je nach Betriebssituation ändernder Kenndatenwert ist der Load-Sensing-Druck, der am Anschluss des Load-Sensing-Schlauchs anste hen kann. Der Load-Sensing-Druck meldet den von den Verbrauchern ange forderten Lastdruck an die Hydropumpe der mobilen Arbeitsmaschine. Der Hydropumpe wird damit ermöglicht, deren Druck und/oder Volumenstrom an den vom Verbraucher angeforderten Druck und/oder Volumenstrom an zupassen, sodass hydraulische Leistungsverluste minimiert werden. Such a characteristic value, which changes depending on the operating situation, is the load-sensing pressure, which can be applied to the connection of the load-sensing hose. The load sensing pressure reports the load pressure requested by the consumers to the hydraulic pump of the mobile machine. The hydraulic pump is thus enabled to adapt its pressure and / or volume flow to the pressure and / or volume flow requested by the consumer, so that hydraulic power losses are minimized.
Mithin kann der Load-Sensing-Druck über eine Funkstrecke oder ein Kabel vom Informationsspeicher s und/oder hydraulisch über den Load-Sensing- Schlauch gemeldet werden. Der Informationsspeicher 8 kann auch aus schließlich zur Identifizierung des Load-Sensing-Schlauchs verwendet wer den. The load-sensing pressure can therefore be reported via a radio link or a cable from the information memory s and / or hydraulically via the load-sensing hose. The information memory 8 can also be used from finally to identify the load-sensing hose who.
Bei der Ausführungsform von Fig. 1 d erfolgt die Übertragung der Kenndaten vom Informationsspeicher 8 zum Steuergerät der Arbeitsmaschine drahtlos. Jedoch ist der Informationsspeicher 8 im Unterschied zum vorherigen Bei spiel ein vom Anschlussstück 6 separates Bauteil, das am Schlauch 4 ange bracht ist. Dabei kann der Informationsspeicher 8 entsprechend der sche matischen Darstellung vom Anschlussstück 6 beabstandet sein. In the embodiment of FIG. 1 d, the characteristic data are transmitted wirelessly from the information memory 8 to the control device of the working machine. However, in contrast to the previous example, the information memory 8 is a separate component from the connector 6, which is attached to the hose 4. The information memory 8 can be spaced apart from the connector 6 in accordance with the schematic representation.
Die Fig. 2 verdeutlicht eine Ausführungsform, bei der zwei Hydraulik schläuche 4 von jedem der Verbraucher zu jeweils einem Schlauchpaar 1 6 mechanisch miteinander verbunden sind, wobei der eine Schlauch oder Schlauchpaare 1 6 den Druckschlauch 18 und der andere Schlauch den Rückführschlauch 20 bildet. Für sämtliche Schlauchpaare 16 ist am Kupp lungsbereich an der in Fig. 2 mit 22 bezeichneten Schnittstelle ein Kupp lungspaar mit zwei Hydraulikanschlüssen 2 vorgesehen, denen bei jedem Kupplungspaar ein Proportionalventil 24 zugeordnet ist. Dieses ist beim ge zeigten Beispiel durch ein 4/3-Wege-Proportionalventil gebildet, das elektrisch betätigbar und von einem Controller 26 des Steuergeräts der Ar beitsmaschine ansteuerbar ist. Über drahtlose Verbindung erhält dieser die Kenndaten der Schläuche 18, 20 des Schlauchpaares 1 6 aus dem Informati onsspeicher s des jeweiligen Schlauchs 1 8, 20. Das Proportionalventil 24 ist eingangsseitig mit dem Druckanschluss P und dem Tankanschluss T der Druckversorgungseinrichtung der Arbeitsmaschine in Verbindung und aus gangsseitig mit dem einen und dem anderen Hydraulikanschluss 2 des be treffenden Kupplungspaares. Bei dieser Anordnung kann an einem beliebi gen dieser Kupplungspaare das Schlauchpaar 1 6 eines beliebigen Verbrau chers angeschlossen werden. Da der Controller 1 6 aus den von dem Infor mationsspeicher 8 gelieferten Kenndaten erkennt, welcher der Schläuche 1 8, 20 der Druckschlauch und welcher der Rückführschlauch ist, steuert der Controller 26 das Wegeventil 24 in die entsprechende Ventilposition, bei der einer der Schläuche 18, 20 mit dem Druckanschluss P und der an dere mit dem Tankanschluss T in Verbindung ist. Gleichzeitig stellt das Wegeventil 24 durch seine Proportionalität den gewünschten Volumen- Strom ein. Die bedarfsgerechte Versorgung ist dadurch bei Anschluss belie biger Schlauchpaare 16 an den Anschlüssen 2 beliebiger Kupplungspaare an der Schnittstelle 22 der Arbeitsmaschine sichergestellt. 2 illustrates an embodiment in which two hydraulic hoses 4 from each of the consumers are mechanically connected to one another to form a hose pair 1 6, one hose or hose pairs 1 6 forming the pressure hose 18 and the other hose forming the return hose 20. For all pairs of hoses 16, a coupling pair with two hydraulic connections 2 is provided on the coupling area at the interface designated by 22 in FIG. 2, to which a proportional valve 24 is assigned for each coupling pair. In the example shown, this is formed by a 4/3-way proportional valve which can be actuated electrically and controlled by a controller 26 of the control unit of the work machine. Via a wireless connection, this receives the characteristics of the hoses 18, 20 of the hose pair 1 6 from the information memory s of the respective hose 1 8, 20. The proportional valve 24 is on the input side in connection with the pressure port P and the tank port T of the pressure supply device of the machine the output side with one and the other hydraulic connection 2 of the coupling pair in question. In this arrangement, the hose pair 1 6 of any consumer can be connected to any of these coupling pairs. Since the controller 1 6 recognizes from the characteristic data supplied by the information memory 8 which of the hoses 1 8, 20 is the pressure hose and which is the return hose, the controller 26 controls the directional control valve 24 in the corresponding valve position in which one of the hoses 18, 20 is connected to the pressure port P and the other with the tank port T. At the same time, the proportionality of the directional valve 24 provides the desired volume Power on. The needs-based supply is thereby ensured when any hose pairs 16 are connected to the connections 2 of any coupling pairs at the interface 22 of the working machine.
Fig. 3 zeigt eine weitere Ausführungsform, die sich hinsichtlich des Teil-An schlussbereichs der mobilen Arbeitsmaschine vom vorherigen Beispiel un terscheidet. Anstelle des 4/3-Wege-Proportionalventils sind zwei 2/2-Wege- Proportionalventile 28 und zwei 3-Wege-Druckregler 30 vorgesehen. Jeder der beiden Hydraulikanschlüsse 2 eines Verbrauchers ist jeweils mit der Ausgangsseite eines der beiden 2/2-Wege-Proportionalventile 28 verbun den, sodass die beiden Hydraulikanschlüsse 2 unabhängig voneinander mit Druck vom Druckanschluss P versorgt werden können und/oder zur Dru ckentlastung mit dem Tankanschluss T verbunden werden können. Dazu ist das jeweilige 2/2-Wege-Proportionalventil 28 eingangsseitig mit der Aus gangsseite einer der beiden 3-Wege-Druckregler 30 verbunden, die ein gangsseitig jeweils mit dem Druckversorgungsanschluss P und dem Tankan schluss T verbunden sind. Fig. 3 shows a further embodiment which differs from the previous example with regard to the sub-connection area of the mobile work machine. Instead of the 4/3-way proportional valve, two 2/2-way proportional valves 28 and two 3-way pressure regulators 30 are provided. Each of the two hydraulic connections 2 of a consumer is connected to the output side of one of the two 2/2-way proportional valves 28, so that the two hydraulic connections 2 can be supplied with pressure from pressure connection P independently of one another and / or to relieve pressure from the tank connection T can be connected. For this purpose, the respective 2/2-way proportional valve 28 is connected on the input side to the output side of one of the two 3-way pressure regulators 30, which are each connected to the pressure supply connection P and the tank connection T on the input side.
Sowohl die beiden 3-Wege-Druckregler 30 als auch die beiden 2/2-Wege- Proportionalventile 28 werden jeweils mittels eines elektromagnetischen Stellgliedes betätigt, das von dem Controller 26 des Steuergeräts der Ar beitsmaschine angesteuert wird. Both the two 3-way pressure regulators 30 and the two 2/2-way proportional valves 28 are each operated by means of an electromagnetic actuator that is controlled by the controller 26 of the control unit of the Ar work machine.
Somit bietet die weitere Ausführungsform nach Fig. 3 die Möglichkeit, den Verbraucher mit verschiedenen Strategien anzusteuern. Beispielsweise kön nen beide Anschlüsse zur Verwirklichung einer Art Schwimmstellung zum Tankanschluss T hin entlastet werden oder beide Anschlüsse werden mit zumindest einem Teil des Drucks vom Versorgungsanschluss P beauf schlagt, sodass beispielsweise ein Kolben eines doppeltwirkenden Arbeits zylinders in einer vorgebbaren Position zwischen zwei Druckräumen einge spannt ist. Die in Fig. 1 a und Fig. 1 d gezeigten Informationsspeicher s sind in der Nähe des Anschlussstücks 6 angeordnet, damit das Kabel 10 bzw. die Über tragungsstrecke der drahtlosen Verbindung kurz ist. Im Fall der Verwen- düng eines Kabels 10 ist somit die unter rauen Arbeitsbedingungen von Landmaschinen und Baumaschinen bestehende Gefahr einer Kabelbeschä digung verringert. Im Fall der drahtlosen Verbindung stellt die Nähe zwi schen Informationsspeicher 8 und Anschlussstück 6 sicher, dass die Kenn daten störungsfrei übertragen werden, obwohl sich insbesondere ferromag- netische Metallteile in direkter Umgebung befinden und bewegt werden.The further embodiment according to FIG. 3 thus offers the possibility of controlling the consumer with different strategies. For example, both connections can be relieved to achieve a kind of floating position towards the tank connection T or both connections are subjected to at least part of the pressure from the supply connection P so that, for example, a piston of a double-acting working cylinder is clamped in a predeterminable position between two pressure chambers . The information stores shown in FIGS. 1 a and 1 d are arranged in the vicinity of the connector 6 so that the cable 10 or the transmission path of the wireless connection is short. If a cable 10 is used, the risk of cable damage that exists under the rough working conditions of agricultural machinery and construction machinery is reduced. In the case of the wireless connection, the proximity between the information memory 8 and the connector 6 ensures that the identification data are transmitted without interference, although in particular ferromagnetic metal parts are in the immediate vicinity and are being moved.
Bei zeichnerisch nicht dargestellten Ausführungsbeispielen befinden sich Informationsspeicher 8 und Anschlussstück 6 nicht in der Nähe zueinander. In the exemplary embodiments not shown in the drawing, the information memory 8 and the connector 6 are not in the vicinity of one another.
Sofern entsprechend den Ausführungsformen nach Fig. 1 a und Fig. 1 b ein Kabel 10 mit einem Stecker 12 verwendet wird, kann beim Anschließen des Anbaugerätes zunächst das Anschlussstück 6 an den Hydraulikanschluss 2 und anschließend der Stecker 12 an das zugehörige Gegenstück der mobi len Arbeitsmaschine gekuppelt werden. Insbesondere in dem Fall, dass als mobile Arbeitsmaschine eine Zugma schine verwendet wird, können an dieselbe zwei oder mehr Anbaugeräte angeschlossen werden. If a cable 10 with a plug 12 is used according to the embodiments according to FIGS. 1 a and 1 b, when connecting the attachment, the connector 6 can first be connected to the hydraulic connection 2 and then the connector 12 can be connected to the associated counterpart of the mobile work machine be coupled. In particular in the event that a tractor is used as the mobile work machine, two or more attachments can be connected to the same.
Die mobile Arbeitsmaschine kann jedoch insbesondere auch als Bauma- schine ausgeführt sein. However, the mobile work machine can in particular also be designed as a construction machine.

Claims

P a t e n t a n s p r ü c h e P a t e n t a n s p r ü c h e
1 . Verbindungsvorrichtung zwischen mindestens einer hydraulischen Druckversorgungseinrichtung, wie der Druckversorgungseinrichtung einer mobilen Arbeitsmaschine, und mindestens einem hydrauli schen Verbraucher, wie einer hydraulisch betätigbaren Arbeitsgerät schaft mindestens eines Anbaugerätes, mit Hydraulikanschlüssen (2) aufseiten der Versorgungseinrichtung und korrespondierend kuppel baren Hydraulikanschlüssen (6) aufseiten des jeweiligen Verbrau- chers, dadurch gekennzeichnet, dass mittels verbraucherseitigen In formationsspeichern (8) Daten, betreffend den jeweiligen Verbrau cher, an die jeweils zuordenbare Versorgungseinrichtung weiterge geben sind, so dass im gekuppelten Zustand der einander zugeord neten Hydraulikanschlüsse (2, 6) der jeweilige Verbraucher individu- eil seitens seiner Versorgungseinrichtung mit Hydraulikmedium vor- gebbaren Drucks und Volumenstroms versorgt ist. 1 . Connection device between at least one hydraulic pressure supply device, such as the pressure supply device of a mobile work machine, and at least one hydraulic consumer, such as a hydraulically operated work device shaft of at least one attachment, with hydraulic connections (2) on the side of the supply device and correspondingly couplable hydraulic connections (6) on the side of the respective Consumers, characterized in that by means of information memories (8) on the consumer side, data relating to the respective consumer are passed on to the respective assignable supply device, so that in the coupled state of the hydraulic connections (2, 6) assigned to one another, the respective consumer is individually supplied by its supply device with hydraulic medium of predeterminable pressure and volume flow.
2. Verbindungsvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass ein verbraucherseitiger Anschluss (6) der Druckversorgung zum Betätigen eines Verbrauchers oder dem Bereitstellen eines Load-Sen- sing-Drucks dient und ein weiterer verbraucherseitiger Anschluss (6) desselben Verbrauchers die Rückführung des jeweiligen Hydraulik mediums zur Druckversorgungseinrichtung ermöglicht. 3. Verbindungsvorrichtung nach Anspruch 1 oder 2, dadurch gekenn zeichnet, dass die Druckversorgungseinrichtung eine Druckquelle (P), wie eine Hydropumpe, und einen Rücklauf zu einem Vorrats speicher, wie einem Tank (T), aufweist. 2. Connecting device according to claim 1, characterized in that a consumer-side connection (6) of the pressure supply is used to operate a consumer or to provide a load-sensing pressure and a further consumer-side connection (6) of the same consumer is used to return the respective hydraulic system medium to the pressure supply device allows. 3. Connecting device according to claim 1 or 2, characterized in that the pressure supply device has a pressure source (P), such as a hydraulic pump, and a return to a reservoir, such as a tank (T).
4. Verbindungsvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Druckversorgungseinrichtung von einem Steuergerät (22) direkt ansteuerbar ist oder dass zusätzlich o- der alternativ das Steuergerät (22) jeweils eine Ventileinrichtung (24) ansteuert, die zwischen die Druckversorgungseinrichtung und die Hydraulikanschlüsse (2) aufseiten der Druckversorgungseinrichtung geschaltet ist. 4. Connecting device according to one of the preceding claims, characterized in that the pressure supply device of a control device (22) can be controlled directly or that the control device (22) additionally or alternatively controls a valve device (24) which is connected between the pressure supply device and the hydraulic connections (2) on the pressure supply device side.
5. Verbindungsvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die jeweilige Ventileinrichtung aus Einzelventilen oder aus einem Proportionalventil gebildet ist, vor- zugweise aus einem Proportional-Wegeventil, besonders bevorzugt aus einem 4/3-Wege-Proportionalventil (24). 5. Connecting device according to one of the preceding claims, characterized in that the respective valve device is formed from individual valves or from a proportional valve, preferably from a proportional directional valve, particularly preferably from a 4/3-way proportional valve (24).
6. Verbindungsvorrichtung nach einem der der vorstehenden Ansprü che, dadurch gekennzeichnet, dass zumindest vier Einzelventile vor- gesehen sind, von denen die ersten beiden als 3-Wege-Druckregler6. Connecting device according to one of the preceding claims, characterized in that at least four individual valves are provided, the first two of which are 3-way pressure regulators
(30) und die anderen beiden als 2-Wege-Proportionalventile (28) ausgeführt sind, die jeweils ausgangsseitig mit einem der Hydrau likanschlüsse (2) verbindbar sind und denen jeweils eingangsseitig Druck von einem der beiden 3-Wege-Druckregler zur Druckbeauf- schlagung des jeweiligen Hydraulikanschlusses (2) zur Verfügung stellbar ist. (30) and the other two are designed as 2-way proportional valves (28), each of which can be connected to one of the hydraulic connections (2) on the output side and to which on the input side pressure from one of the two 3-way pressure regulators for pressurization of the respective hydraulic connection (2) is available.
7. Verbindungsvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der jeweilige Informationsspeicher (8) seine Daten an einen Controller (26) weitergibt, der die Druckversor gungseinrichtung und/oder die Ventileinrichtung (24) ansteuert. 7. Connecting device according to one of the preceding claims, characterized in that the respective information memory (8) forwards its data to a controller (26) which controls the pressure supply device and / or the valve device (24).
8. Verbindungsvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Informationsspeicher (8) die Da- ten an den Controller (26) mittels Kabel (10) oder drahtlos übermit telt. 8. Connecting device according to one of the preceding claims, characterized in that the information memory (8) transmits the data to the controller (26) by means of cable (10) or wirelessly.
9. Verbindungsvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der jeweilige Informationsspeicher (8) auf einem verbraucherseitigen Hydraulikschlauch (4, 1 8, 20) ange ordnet oder in den verbraucherseitigen Anschluss (6) integriert ist. 9. Connecting device according to one of the preceding claims, characterized in that the respective information memory (8) is arranged on a consumer-side hydraulic hose (4, 1 8, 20) or is integrated into the consumer-side connection (6).
10. Verfahren zum Betrieb einer Verbindungsvorrichtung bei einer mo bilen Arbeitsmaschine mit anzuschließendem Anbaugerät nach ei nem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die verbraucherseitigen Anschlüsse (6) wahllos mit den Anschlüssen (2) der Druckversorgungseinrichtung verbunden werden, dass die Sig nalübertragung zwischen den Informationsspeichern (8) des Anbau geräts und dem jeweiligen Steuerungsgerät (26) der Arbeitsmaschine hergestellt wird, dass das Steuergerät (26) durch Ansteuern der Druckversorgungs- bzw. der Ventileinrichtung (24) diese veranlas- sen, das Hydraulikmedium mit einem individuell an das Anbaugerät angepassten Druck und Volumenstrom an dieses Anbaugerät abzu geben, die als Daten in dem zugeordneten Informationsspeicher (8) abgelegt werden. 10. A method for operating a connecting device in a mobile work machine with an attachment to be connected according to egg nem of the preceding claims, characterized in that the consumer-side connections (6) are randomly connected to the connections (2) of the pressure supply device that the signal transmission between the Information storage (8) of the attachment and the respective control device (26) of the working machine is produced so that the control device (26) by actuating the pressure supply or valve device (24) causes the hydraulic medium to be sent individually to the attachment give off adapted pressure and volume flow to this attachment, which are stored as data in the associated information memory (8).
EP20712506.3A 2019-05-31 2020-03-16 Connecting means Withdrawn EP3935302A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019003873.8A DE102019003873A1 (en) 2019-05-31 2019-05-31 Connecting device
PCT/EP2020/057101 WO2020239284A1 (en) 2019-05-31 2020-03-16 Connecting means

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EP3935302A1 true EP3935302A1 (en) 2022-01-12

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US (1) US20220260093A1 (en)
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DE (1) DE102019003873A1 (en)
WO (1) WO2020239284A1 (en)

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DE102019003873A1 (en) 2020-12-03
WO2020239284A1 (en) 2020-12-03

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