EP2260210B1 - Controller and the use thereof - Google Patents
Controller and the use thereof Download PDFInfo
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- EP2260210B1 EP2260210B1 EP09719462A EP09719462A EP2260210B1 EP 2260210 B1 EP2260210 B1 EP 2260210B1 EP 09719462 A EP09719462 A EP 09719462A EP 09719462 A EP09719462 A EP 09719462A EP 2260210 B1 EP2260210 B1 EP 2260210B1
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- Prior art keywords
- piston
- control device
- hydraulic
- cord
- piston rod
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- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 230000000284 resting effect Effects 0.000 claims 2
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
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Classifications
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
Definitions
- the invention relates to a generic control device according to the preamble of the main claim.
- Hydraulic systems are today used in the provision of large forces, for example for the operation of tools, versatile application.
- tools in rescue and rescue technology such as spreaders, presses or shears also require the mobility of such hydraulic systems here.
- the mechanical drive of the pumps of the hydraulic systems must also be effected by mobile drives, such as, for example, internal combustion engines or battery-powered electric motors (US Pat. DE-9412147-U ).
- the mobile hydraulic units usually have at least two independent hydraulic circuits. If all these hydraulic circuits are also to be controlled, then at least two further known control devices are required, which is even less desirable.
- the end of the connected rod or train causes the internal combustion engine to idle. If, as a result of the actuation of one of the at least two or of two connected tools, the pressure of the hydraulic fluid increases, then the one or both pistons is moved from the rest position into the switching position. As a result, the end of the rod or train is also moved and causes the lifting to the maximum speed of the internal combustion engine from the idling out and thus for a larger power output of the hydraulic pump driven by this engine. It is to a certain extent given gas hydraulically, without the need for a separate, for example, electrical line from the tool to the internal combustion engine. When the tool is no longer actuated, the pressure drops and the piston returns to its rest position while the end of the rod or the train moves back, whereby the internal combustion engine returns to idling.
- the hydraulic pump whose suction side and pressure side via a return or Flow in the form of hydraulic lines are connected to a actuatable via a manual switch of a valve hydraulic tool connected, which valve preferably has a flow to the return line switching position in which the driven by the drive hydraulic pump, the hydraulic fluid in the idle of the drive of the Suction side to the pressure side in which the pump in the circle promotes.
- the control unit is particularly simple if the train of the control unit is embodied as a Bowden cable and if a drive control designed to advantage as a carburettor of the internal combustion engine is provided for the drive, which is connected to the end of the rod or the train.
- FIG. 1 shows a schematic representation of a hydraulic system of the present invention.
- a hydraulic system 4 includes a pump 10, a mechanical drive 20, a controller 30, and a tank 40 that can provide or receive hydraulic fluid 400, such as hydraulic oil.
- a hydraulic tool 60 can be connected to the hydraulic system 4, which is shown here by way of example as a hand tool in the form of a hydraulic cutting tool.
- a controller 30 for measuring the pressure of the hydraulic fluid 400 in each of the at least two pressure-side ports 12 of the pump 10 is turned on.
- the hydraulic pump, the suction side 11 and pressure side 12 are connected via a return 51 and flow 52 in the form of hydraulic lines to the actuatable via a manual switch 610 of a valve 600 hydraulic tool 60 is between the control unit 30 and the hydraulic fluid receiving tank 40th arranged and driven by the designed as an internal combustion engine M drive 20.
- the control unit 30 is further connected to a trained as a carburetor drive control 21 via a Bowden cable 35, whereby the speed of the drive 20 can be controlled.
- the drive 20 provides mechanical drive power to the pump 10 via a power transmission 22, such as a shaft.
- the drive controller 21 controls the drive power of the drive 20 controlled by the controller 30.
- the valve 600 has a forward position 52 to the return 51 connecting switch position 601 in which the driven by the drive 20 hydraulic pump 10, the hydraulic fluid in the idle of the drive from the suction side 11 to the pressure side 12 in the housing of the pump 10 in a circle promotes.
- the tool 60 is provided with a double-acting piston-cylinder arrangement 620 with an actual cylinder 624 and a piston having a piston rod 623 and a cutting tool 630.
- the pressure side 12 of the pump 10 is connected via the flow 52 with the hydraulic tool 60 and the suction side 11 of the pump via the return 51 with the hydraulic tool.
- Detachable couplings 71, 72 and 640 may be provided on the side of the hydraulic system 4 and / or on the side of the hydraulic tool 60 to allow a tool change.
- the valve 600 which is adjustable from the outside via a mechanical, manual or electrical actuator 610, furthermore has a first valve position 601, a second valve position 602 and a third valve position 603.
- the valve 600 connects the flow 52 and thus the pressure side 12 of the pump 10 via line 621 with the cylinder chamber and the return 51 and thus the suction side 11 of the pump via the line 622 with the piston rod space.
- the pump 10 delivers in this state hydraulic fluid 400 in the cylinder chamber, whereby the piston rod 623 extended and while the tool 60 is actuated accordingly.
- valve 600 connects the flow 52 and thus the pressure side 12th the pump 10 via the line 622 with the piston rod space and the return 51 and thus the suction side 11 of the pump via the line 621 with the cylinder chamber.
- the pump 10 in this state conveys hydraulic fluid 400 into the piston rod space, whereby the hydraulic tool 60 is moved in the reverse direction.
- the hydraulic fluid 400 is nachgeargt of the tank 40.
- the speed of the drive 20 is automatically increased via the position switch and the drive control 21 relative to the idle to the maximum speed.
- the valve 600 connects the flow 52 with the return 51 and thus enables a cycle of the hydraulic fluid 400.
- the actual control unit 30 is in the FIGS. 2 to 4 shown in more detail. It has in the illustrated embodiment, two inputs 31,32 ( FIG. 4 ) on. Each of these inputs is exactly connected to a pressure chamber 310, 320 and each of these is connected to a pressure application from a rest position ( FIG. 4 , bottom) against the force of a spring 312, 322 in a switching position ( FIG. 4 , above) movable piston 313, 333, which has a piston rod 311, 311.
- the piston rod 311.321 engages in the switching position indirectly at the end 34 of a rod or a train 35 and actuates this, which in the Detail will be described later.
- a piston rod 314,324 leading the piston rod 311,321 leading from its rest position into the switching position is provided in the pressure chamber 310,320 a piston rod 314,324 leading the piston rod 311,321 leading from its rest position into the switching position is provided.
- the end 34 of the connected Bowden cable 35 causes the internal combustion engine M to idle. If, as a result of the actuation of one of the two connected tools 60, the pressure of the hydraulic fluid 400, the one piston 313 of the two pistons 313, 323 is moved from the rest position (FIG. FIG. 4 , below) into the switching position ( FIG. 4 , above) moves. As a result, the end 34 of the Bowden cable 35 is moved and causes the raising of the idle speed to the maximum speed of the engine M and thus a greater power output of the driven hydraulic pump of this 10. If the tool is no longer actuated, the pressure and the piston 313 drops returns again with simultaneous return movement of the end 34 of the Bowden cable in its rest position, whereby the engine M returns to idle.
- the piston rods 311, 321 of the control unit 30 extend into a separate cylindrical space 318, 328 delimited by the pressure chamber 310, 320 and the springs 312, 322, and abut against the rear bottom of a cup-shaped piston 319, 330.
- the one end of the spring 312, 322 abuts against the bottom of the cup-shaped piston 319, 329 opposite this rear bottom.
- the end 34 of the Bowden cable 35 extends into the path of movement of each cup-shaped piston 319, 330 and is of these moved in the movement in the switching position parallel thereto in the sense of actuation of the carburetor 21 as a drive control of the engine M or 20, whereby it is driven from idle to its maximum speed.
- the piston rod 311,321 engages in the switching position via the cup-shaped piston 319,329 indirectly to the end 34 of the rod or train 35 and actuates this and thus the carburetor as drive control 21 of the engine.
- the other end of the spring 312.322 is mounted for the purpose of adjustment in a likewise cup-shaped piston 402, which is adjustable from the outside via an adjusting screw 401. In this way, the bias of the spring and thus also the adjustment of the Bowden cable and thus the drive control can be adjusted.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Fluid-Pressure Circuits (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft ein gattungsgemässes Steuergerät nach dem Oberbegriff des Hauptanspruchs.The invention relates to a generic control device according to the preamble of the main claim.
Ein solches Stevesgesät ist aus
Hydrauliksysteme finden heute bei der Bereitstellung großer Kräfte, zum Beispiel zur Betätigung von Werkzeugen, vielseitige Anwendung. Insbesondere Werkzeuge in der Rettungs- und Bergetechnik wie Spreizer, Pressen oder Scheren setzen hier auch die Mobilität solcher Hydrauliksysteme voraus. Da an diesen vielseitigen und unbestimmten Einsatzorten in der Regel keine Energieversorgung bereitsteht, muss auch der mechanische Antrieb der Pumpen der Hydrauliksysteme durch mobile Antriebe erfolgen, wie beispielsweise durch Verbrennungsmotoren oder batteriebetriebene Elektromotoren (
Gerade bei mobilen Systemen kann jedoch eine hohe Energieeffizienz von Bedeutung sein, da unter Umständen die eingesetzten Energieträger am Einsatzort nur stark eingeschränkt verfügbar sind. Ferner ist beim Aufbau der Hydrauliksysteme bzw. während dem Anschluss der jeweiligen hydraulischen Werkzeuge an das Hydrauliksystem oft ein möglichst schneller und einfacher Aufbau bzw. Anschluss erwünscht, da jeder zusätzlich erforderliche Handgriff Zeit kostet und/oder weitere Fehlerquellen in sich birgt. Gerade im Rettungsdienst besteht oft keine Zeit und Kapazität, sich um einen besonders effizienten oder emissionsarmen Betrieb des Rettungsgeräts zu kümmern. Ausserdem wird die hydraulische Pumpe durch das angeschlossene hydraulische Werkzeug in dem Sinne gesteuert, dass bei dessen Betätigung der Antrieb aus dem Leerlauf in höhere Drehzahlen hochgefahren wird.Especially in mobile systems, however, can be a high Energy efficiency may be important because under certain circumstances, the energy sources used in the field are only available to a very limited extent. Furthermore, in the construction of the hydraulic systems or during the connection of the respective hydraulic tools to the hydraulic system often as fast and simple construction or connection is desirable because each additional required handle costs time and / or other sources of error in itself. Especially in the rescue service there is often no time and capacity to take care of a particularly efficient or low-emission operation of the rescue device. In addition, the hydraulic pump is controlled by the connected hydraulic tool in the sense that when actuated, the drive is raised from idle to higher speeds.
Dies geschieht beim Stand der Technik durch einen an dem Werkzeug vorgesehenen elektischen Schalter (
Es ist im Stand der Technik auch ein hydraulisches Steuergerät nach dem Oberbegriff des Hauptanspruchs, vorbenutzt worden, bei dem die durch den Fluss der Hydraulikflüssigkeit bewirkten Auslenkung eines gewissermassen schwimmend gelagerten Kolbens durch einen elektrischen Näherungsschalter festgestellt wird, wodurch ein elektrisches Signal an die Antriebssteuerung abgegeben wird. Dadurch wird die Drehzahl des Verbrennungsmotors über eine an diesem vorgesehenen Vergaser mittels eines elektrischen Stellmotors verändert. Weder der anfällige Näherungsschalter, noch der zusätzliche Stellmotor am Vergaser sind insbesondere im Rettungswesen erwünscht, weil sie die Geräte nur unnötig verkomplizieren und für den harten Einsatz in Notfällen nicht immer ausreichend robust sind.It has also been used in the prior art, a hydraulic control device according to the preamble of the main claim, wherein the caused by the flow of hydraulic fluid deflection of a certain floating floating piston is detected by an electrical proximity switch, whereby an electrical signal is delivered to the drive control , As a result, the rotational speed of the internal combustion engine is changed by means of an electric servomotor via a carburetor provided thereon. Neither the prone proximity switch, nor the additional servomotor on Carburettors are particularly desirable in rescue, because they only unnecessarily complicate the devices and are not always sufficiently robust for hard use in emergencies.
Ausserdem weisen die mobilen Hydraulikaggregate in aller Regel zumindest zwei voneinander unabhängige Hydraulikkreise auf. Wenn alle diese Hydraulikkreise auch gesteuert werden sollen, so sind zumindest zwei weitere, bekannte Steuergeräte erforderlich, was noch weniger wünschenswert ist.In addition, the mobile hydraulic units usually have at least two independent hydraulic circuits. If all these hydraulic circuits are also to be controlled, then at least two further known control devices are required, which is even less desirable.
Es ist daher Aufgabe der vorliegenden Erfindung, ein verbessertes, insbesondere für den Betrieb von solchen Pumpen geeignetes Steuergerät bereitzustellen, die zumindest zwei voneinander unabhängige Hydraulikkreise aufweisen.It is therefore an object of the present invention to provide an improved, in particular suitable for the operation of such pumps control unit having at least two independent hydraulic circuits.
Diese Aufgabe wird durch ein Steuergerät gemäss Anspruch 1 sowie durch die Verwendung eines solshen Steuergeräts gemäss Anspruch 8 gelöst.This object is achieved by a control device according to claim 1 and by the use of a solshen control device according to claim 8.
Befinden sich die Kolben in der Ruhelage, so bewirkt das Ende der angeschlossenen Stange oder des Zuges, dass der Verbrennungsmotor im Leerlauf dreht. Steigt infolge der Betätigung von einem der zumindest zwei oder von zwei angeschlossenen Werkzeuge der Druck der Hydraulikflüssigkeit an, so wird der eine oder beide Kolben aus der Ruhelage in die Schaltlage bewegt. Infolgedessen wird auch das Ende der Stange oder des Zuges bewegt und bewirkt das Anheben zu der Maximaldrehzahl des Verbrennungsmotors aus dessen Leerlauf heraus und damit auch für eine grössere Leistungsabgabe der von diesem Verbrennungsmotor angetriebenen hydraulischen Pumpe. Es wird gewissermassen hydraulisch Gas gegeben, ohne dass es einer gesonderten bspw. elektrischen Leitung von dem Werkzeug zu dem Verbrennungsmotor bedarf. Wird das Werkzeug nicht mehr betätigt, fällt der Druck und der Kolben gelangt wieder unter gleichzeitiger Zurückbewegung des Endes der Stange oder des Zuges in seine Ruhelage, wodurch der Verbrennungsmotor wieder in den Leerlauf gelangt.If the pistons are in the rest position, the end of the connected rod or train causes the internal combustion engine to idle. If, as a result of the actuation of one of the at least two or of two connected tools, the pressure of the hydraulic fluid increases, then the one or both pistons is moved from the rest position into the switching position. As a result, the end of the rod or train is also moved and causes the lifting to the maximum speed of the internal combustion engine from the idling out and thus for a larger power output of the hydraulic pump driven by this engine. It is to a certain extent given gas hydraulically, without the need for a separate, for example, electrical line from the tool to the internal combustion engine. When the tool is no longer actuated, the pressure drops and the piston returns to its rest position while the end of the rod or the train moves back, whereby the internal combustion engine returns to idling.
Somit ist es nach Lehre der Erfindung mit Vorteil möglich, mit einem einzigen erfindungsgemässen Steuergerät auf jeden Fall zwei gleichzeitig an entsprechend ausgestaltete Pumpen angeschlossene Werkzeuge zu steuern; es wirkt wie ein eingangsseitig fluidisch angesteuertes ODER-Glied mit mechanischem Ausgang.Thus, it is according to the teachings of the invention advantageously possible to control with a single inventive control device in any case two simultaneously connected to appropriately configured pumps tools; it acts as an input side fluidically controlled OR gate with mechanical output.
Zweckmässigerweise ist die hydraulische Pumpe, deren Saugseite und Druckseite über einen Rücklauf bzw. Vorlauf in Form von Hydraulikleitungen verbunden sind, an ein über einen Handschalter eines Ventils betätigbares hydraulisches Werkzeug anschliessbar, welches Ventil vorzugsweise eine den Vorlauf mit dem Rücklauf verbindende Schaltstellung aufweist, in der die von dem Antrieb angetriebene hydraulische Pumpe die Hydraulikflüssigkeit im Leerlauf des Antriebes von der Saugseite zu der Druckseite in das der Pumpe im Kreis fördert.Conveniently, the hydraulic pump whose suction side and pressure side via a return or Flow in the form of hydraulic lines are connected to a actuatable via a manual switch of a valve hydraulic tool connected, which valve preferably has a flow to the return line switching position in which the driven by the drive hydraulic pump, the hydraulic fluid in the idle of the drive of the Suction side to the pressure side in which the pump in the circle promotes.
Besonders einfach gestaltet sich das Steuergerät, wenn der Zug des Steuergerätes als Bowdenzug ausgebildet ist und wenn dass für den Antrieb eine mit Vorteil als Vergaser des Verbrennungsmotors ausgebildete Antriebssteuerung vorgesehen ist, die mit dem Ende der Stange oder des Zuges verbunden ist.The control unit is particularly simple if the train of the control unit is embodied as a Bowden cable and if a drive control designed to advantage as a carburettor of the internal combustion engine is provided for the drive, which is connected to the end of the rod or the train.
Weitere zweckmässige Ausgestaltungen und Weiterbildungen der Erfindung sind in den restlichen Unteransprüchen gekennzeichnet.Further expedient refinements and developments of the invention are characterized in the remaining subclaims.
Bevorzugte Ausführungsformen der Erfindung werden nachfolgend unter Bezugnahme auf die Zeichnung näher erläutert. In dieser zeigt:
- Figur 1
- ein Steuergerät, in schematischer verschalteter Darstellung;
- Figur 2
- das Steuergerät gemäss
Figur 1 , in Seitenansicht; - Figur 3
- das Steuergerät gemäss
Figur 1 , in Vorderansicht und - Figur 4
- einen Schnitt IV-IV gemäss
Figur 2 , in grösserem Massstab.
- FIG. 1
- a control unit, in a schematic interconnected representation;
- FIG. 2
- the control unit according to
FIG. 1 , in side view; - FIG. 3
- the control unit according to
FIG. 1 , in front view and - FIG. 4
- a section IV-IV according to
FIG. 2 , in larger scale.
Die
Hierbei ist ein Steuergerät 30 zum Messen des Drucks der Hydraulikflüssigkeit 400 in jeder der zumindest zwei druckseitigen Anschlüsse 12 der Pumpe 10 eingeschaltet. Die hydraulische Pumpe, deren Saugseite 11 und Druckseite 12 über einen Rücklauf 51 bzw. Vorlauf 52 in Form von Hydraulikleitungen an das über einen Handschalter 610 eines Ventils 600 betätigbares hydraulisches Werkzeug 60 angeschlossen sind, ist zwischen dem Steuergerät 30 und dem die Hydraulikflüssigkeit aufnehmenden Tank 40 angeordnet und von dem als Verbrennungsmotor M ausgebildeten Antrieb 20 angetrieben.Here, a
Das Steuergerät 30 ist ferner mit einer als Vergaser ausgebildeten Antriebssteuerung 21 über einen Bowdenzug 35 verbunden, wodurch die Drehzahl des Antriebs 20 gesteuert werden kann. Der Antrieb 20 stellt eine mechanische Antriebsleistung vermittels einer Kraftübertragung 22, wie beispielsweise einer Welle, an die Pumpe 10 bereit. Die Antriebssteuerung 21 stellt die Antriebsleistung des Antriebs 20 von dem Steuergerät 30 gesteuert ein.The
Das Ventil 600 weist eine den Vorlauf 52 mit dem Rücklauf 51 verbindende Schaltstellung 601 auf, in der die von dem Antrieb 20 angetriebene hydraulische Pumpe 10 die Hydraulikflüssigkeit im Leerlauf des Antriebes von der Saugseite 11 zu der Druckseite 12 in das Gehäuse der Pumpe 10 im Kreis fördert. Das Werkzeug 60 ist mit einer doppelt wirkenden Kolben-Zylinder-Anordnung 620 mit einem eigentlichen Zylinder 624 und einem eine Kolbenstange 623 aufweisenden Kolben sowie einem Schneidewerkzeug 630 versehen. Die Druckseite 12 der Pumpe 10 ist über den Vorlauf 52 mit dem hydraulischen Werkzeug 60 und die Saugseite 11 der Pumpe über den Rücklauf 51 mit dem hydraulischen Werkzeug verbunden. Lösbare Kupplungen 71,72 sowie 640 können auf der Seite des Hydrauliksystems 4 und/oder auf der Seite des hydraulischen Werkzeugs 60 vorgesehen sein, um einen Werkzeugwechsel zu ermöglichen.The
Das Ventil 600, das über einen mechanischen, manuellen oder elektrischen Betätiger 610 von außen verstellbar ist, weist ferner eine erste Ventilstellung 601, eine zweite Ventilstellung 602 und eine dritte Ventilstellung 603 auf. In der zweiten Ventilstellung 602 verbindet das Ventil 600 den Vorlauf 52 und damit die Druckseite 12 der Pumpe 10 über die Leitung 621 mit dem Zylinderraum und den Rücklauf 51 und damit die Saugseite 11 der Pumpe über die Leitung 622 mit dem Kolbenstangenraum. Die Pumpe 10 fördert in diesem Zustand Hydraulikflüssigkeit 400 in den Zylinderraum, wodurch die Kolbenstange 623 ausgefahren und dabei das Werkzeug 60 entsprechend betätigt wird.The
In der dritten Ventilstellung 603 verbindet das Ventil 600 den Vorlauf 52 und damit die Druckseite 12 der Pumpe 10 über die Leitung 622 mit dem Kolbenstangenraum und den Rücklauf 51 und damit die Saugseite 11 der Pumpe über die Leitung 621 mit dem Zylinderraum. Die Pumpe 10 fördert in diesem Zustand Hydraulikflüssigkeit 400 in den Kolbenstangenraum, wodurch das hydraulische Werkzeug 60 in umgekehrter Richtung bewegt wird.In the
Sowohl in der zweiten als auch in der dritten Ventilstellung 602 bzw. 603, wird die Hydraulikflüssigkeit 400 von dem Tank 40 nachgefördert. Während der Betätigung des hydraulischen Werkzeugs 60 bzw. während das hydraulische Werkzeug 60 Arbeit verrichtet, wird also in vorteilhafter Weise die Drehzahl des Antriebs 20 automatisch über den Positionsschalter und die Antriebssteuerung 21 gegenüber dem Leerlauf zu der maximalen Drehzahl erhöht.In both the second and in the
Des Weiteren verbindet in der ersten Ventilstellung 601 das Ventil 600 den Vorlauf 52 mit dem Rücklauf 51 und ermöglicht damit einen Kreislauf der Hydraulikflüssigkeit 400.Furthermore, in the
Das eigentliche Steuergerät 30 ist in den
Befinden sich die Kolben 313,323 in der Ruhelage so bewirkt das Ende 34 des angeschlossenen Bowdenzuges 35, dass der Verbrennungsmotor M im Leerlauf dreht. Wenn infolge der Betätigung von einem der zwei angeschlossenen Werkzeuge 60 der Druck der Hydraulikflüssigkeit 400 an, so wird der eine Kolben 313 der beiden Kolben 313,323 aus der Ruhelage (
Die Kolbenstangen 311,321 des Steuergerätes 30 reichen in einen gesonderten, von dem Druckraum 310,320 abgegrenzten sowie die Federn 312,322 aufnehmenden zylinderförmigen Raum 318,328 und liegen an dem rückwärtigen Boden eines tassenförmigen Kolbens 319,329 an. Dem, diesem rückwärtigen Boden gegenüberliegenden Grund des tassenförmigen Kolbens 319,329 liegt das eine Ende der Feder 312,322 an.The
Dabei reicht bei dem Steuergerät 30 das Ende 34 des Bowdenzuges 35 in den Bewegungsweg jedes tassenförmigen Kolbens 319,329 und wird von diesen bei dessen Bewegung in die Schaltlage parallel dazu im Sinne einer Betätigung des Vergasers 21 als Antriebssteuerung des Verbrennungsmotors M oder 20 verschoben, wodurch dieser aus dem Leerlauf auf seine maximale Drehzahl gefahren wird. Somit greift die Kolbenstange 311,321 in der Schaltlage über den tassenförmigen Kolben 319,329 mittelbar an dem Ende 34 der Stange oder des Zuges 35 an und betätigt diesen und damit den Vergaser als Antriebssteuerung 21 des Verbrennungsmotors.In this case, in the
Das andere Ende der Feder 312,322 ist dabei zum Zwecke der Verstellung in einem ebenfalls tassenförmigen Kolben 402 gelagert, der von aussen über eine Stellschraube 401 verstellbar ist. Auf diese Weise kann die Vorspannung der Feder und damit auch der Verstellweg des Bowdenzuges und damit die Antriebssteuerung eingestellt werden.The other end of the spring 312.322 is mounted for the purpose of adjustment in a likewise cup-shaped
Claims (8)
- A control device (30) for controlling the rotational speed of a hydraulic pump (10) driven by a combustion engine (M) with at least two inputs (31, 32) for a hydraulic fluid (400), wherein at least two compression chambers (310, 320), each connected to one of the inputs (31, 32), are provided, wherein each of the same is provided with a piston (313, 323) capable of being displaced, subject to the supply of a pressure, from a resting position (Figure 4, bottom) against the force of a spring (312, 322) into a switching position (Figure 4, top), and wherein its piston rod (311, 321) engages in the switching position with the end (34) of a rod or a cord (35),
characterised in that
the piston rods (311, 321) extend into a separate cylindrical chamber (318, 328) separated from the compression chamber and accommodating the springs (312, 322), and are each in contact with the rear-side of the base of a cup-shaped piston (319, 329). - The control device (30) according to claim 1,
characterised in that
a piston rod guide (314, 324) guiding the piston rod (311, 321) from the resting position into the switching position (311, 321) is provided in the compression chamber (310, 320). - The control device (30) according to any one of the preceding claims,
characterised in that
the piston (313, 323) provides a larger diameter than the piston rod guide (314, 324). - The control device (30) according to claim 1,
characterised in that
the spring (322) is in contact with the floor of the cup-shaped piston (319, 329) disposed opposite to the rear-side of the base. - The control device (30) according to any one of the preceding claims,
characterised in that
the cord (35) is embodied as a wire cord or a synthetic material rope. - The control device (30) according to claim 5,
characterised in that
the cord embodied as a wire cord (35) is embodied as a Bowden wire. - The control device (30) according to any one of the preceding claims,
characterised in that
the end (34) of the rod or cord (35) extends into the movement path of each cup-shaped piston (319, 329) and is displaced by the latter parallel to it when it is moved into the switching position. - A use of a control device (30) according to any one of claims 1 to 7 by arranging the hydraulic pump (10) driven by the drive (20) in the two compression-side connections (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013849A DE102008013849A1 (en) | 2008-03-12 | 2008-03-12 | Control device and its use |
PCT/EP2009/000463 WO2009112121A1 (en) | 2008-03-12 | 2009-01-25 | Controller and the use thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2260210A1 EP2260210A1 (en) | 2010-12-15 |
EP2260210B1 true EP2260210B1 (en) | 2012-03-21 |
Family
ID=40490993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09719462A Active EP2260210B1 (en) | 2008-03-12 | 2009-01-25 | Controller and the use thereof |
Country Status (5)
Country | Link |
---|---|
US (1) | US8545188B2 (en) |
EP (1) | EP2260210B1 (en) |
AT (1) | ATE550553T1 (en) |
DE (1) | DE102008013849A1 (en) |
WO (1) | WO2009112121A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8545188B2 (en) | 2008-03-12 | 2013-10-01 | Weber Hydraulik Gmbh | Controller and the use thereof |
EP4105496A1 (en) | 2021-06-18 | 2022-12-21 | Weber-Hydraulik GmbH | Hydraulic unit for supplying hydraulically drivable rescue devices |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8135529B2 (en) * | 2008-09-23 | 2012-03-13 | Delta Electronics, Inc. | Method for controlling constant-pressure fluid |
US11958177B2 (en) | 2018-09-07 | 2024-04-16 | Milwaukee Electric Tool Corporation | Hydraulic piston pump for a hydraulic tool |
US11703066B2 (en) * | 2021-11-11 | 2023-07-18 | Foi Group, Inc. | Hydraulic power pack system |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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US2126863A (en) * | 1935-08-26 | 1938-08-16 | American Steam Pump Company | Governor for fire-pump apparatus |
DE848108C (en) | 1942-04-19 | 1952-09-01 | Boehringer Gmbh Geb | Control for a gear that can be regulated by a manual actuator |
US2690712A (en) * | 1951-02-19 | 1954-10-05 | Stratton Equipment Company | Automatic throttle control |
DE1216067B (en) | 1957-02-04 | 1966-05-05 | Th Calow & Co | Drive for cutting machine tools, especially peeling machines |
US2931305A (en) * | 1957-04-25 | 1960-04-05 | Stratton Equipment Company | Automatic throttle control |
GB861601A (en) | 1957-07-26 | 1961-02-22 | Napier & Son Ltd | Control mechanism for aircraft power plants comprising a gas turbine engine driving a propeller |
GB983100A (en) | 1962-05-17 | 1965-02-10 | New York Air Brake Co | Hydrostatic transmissions |
US3152445A (en) | 1963-04-12 | 1964-10-13 | New York Air Brake Co | Hydrostatic transmission |
US3284999A (en) * | 1966-02-01 | 1966-11-15 | Sundstrand Corp | Hydrostatic transmission |
GB1212187A (en) * | 1966-12-21 | 1970-11-11 | Lansing Bagnall Ltd | Improvements in or relating to hydraulic transmissions for vehicles |
US3444689A (en) * | 1967-02-02 | 1969-05-20 | Weatherhead Co | Differential pressure compensator control |
US3459131A (en) * | 1967-07-26 | 1969-08-05 | Continental Motors Corp | Hydraulic throttle advance |
AU440897B2 (en) * | 1970-03-31 | 1973-09-26 | Improved carburettor throttle control assembly | |
US3797967A (en) * | 1972-05-10 | 1974-03-19 | D Howeth | Hydraulic throttle actuator |
US3812676A (en) | 1972-07-24 | 1974-05-28 | Sargent Industries | Noise reduction apparatus and method |
US3888083A (en) * | 1972-11-21 | 1975-06-10 | John W Tone | Variable speed dual hydrostatic drive |
US4024711A (en) | 1975-01-13 | 1977-05-24 | Russell Jr Wayne B | Throttle control mechanism for an engine |
DE2856805C3 (en) | 1978-12-29 | 1981-12-10 | Carl Metz Gmbh, 7500 Karlsruhe | Device for regulating the fuel supply to an internal combustion engine driving a pump of a hydraulic system |
GB2118241A (en) | 1982-02-10 | 1983-10-26 | M T M Engineering Limited | A hydraulic or pneumatic power supply system for a motor- vehicle including an ic engine |
DE3609399A1 (en) | 1985-03-23 | 1986-10-16 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Hydraulic system |
JP2552026Y2 (en) | 1988-07-06 | 1997-10-27 | デンヨー株式会社 | Control device for engine driven compressor |
US4986783A (en) * | 1989-03-02 | 1991-01-22 | Oswald Brown | Outboard motor power takeoff |
DE9412147U1 (en) | 1994-07-27 | 1994-09-22 | Hugo Junkers Werke GmbH, 82216 Maisach | Mobile hydraulic system |
DE102008013849A1 (en) | 2008-03-12 | 2009-09-17 | Weber-Hydraulik Gmbh | Control device and its use |
-
2008
- 2008-03-12 DE DE102008013849A patent/DE102008013849A1/en not_active Withdrawn
-
2009
- 2009-01-25 WO PCT/EP2009/000463 patent/WO2009112121A1/en active Application Filing
- 2009-01-25 US US12/866,675 patent/US8545188B2/en not_active Expired - Fee Related
- 2009-01-25 AT AT09719462T patent/ATE550553T1/en active
- 2009-01-25 EP EP09719462A patent/EP2260210B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8545188B2 (en) | 2008-03-12 | 2013-10-01 | Weber Hydraulik Gmbh | Controller and the use thereof |
EP4105496A1 (en) | 2021-06-18 | 2022-12-21 | Weber-Hydraulik GmbH | Hydraulic unit for supplying hydraulically drivable rescue devices |
Also Published As
Publication number | Publication date |
---|---|
US20110008187A1 (en) | 2011-01-13 |
DE102008013849A1 (en) | 2009-09-17 |
WO2009112121A1 (en) | 2009-09-17 |
ATE550553T1 (en) | 2012-04-15 |
US8545188B2 (en) | 2013-10-01 |
EP2260210A1 (en) | 2010-12-15 |
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