EP4074965A1 - Drive module for an electrohydraulic system - Google Patents
Drive module for an electrohydraulic system Download PDFInfo
- Publication number
- EP4074965A1 EP4074965A1 EP22167770.1A EP22167770A EP4074965A1 EP 4074965 A1 EP4074965 A1 EP 4074965A1 EP 22167770 A EP22167770 A EP 22167770A EP 4074965 A1 EP4074965 A1 EP 4074965A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive module
- electric motor
- accumulator arrangement
- power supply
- press
- 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.)
- Pending
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- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3003—Details
- B30B9/3007—Control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3042—Containers provided with, or connectable to, compactor means
- B30B9/3046—Containers with built-in compactor means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
- B30B9/3057—Fluid-driven presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
- B65F3/143—Means facilitating the separation of the charging, distributing or compressing devices from the tank of refuse vehicles
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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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
- B65F2003/146—Sensors, e.g. pressure sensors
Definitions
- the present disclosure relates to a drive module for an electro-hydraulic system, in particular for relatively simple hydraulic controls with low precision requirements, such as the control of a structure with double-acting cylinders.
- This system can be used particularly well in container presses.
- Container presses as electrohydraulic systems are essentially known. They serve to compress a filling, for example household waste, paper, old clothes or the like, in order to save space during transport or disposal. In addition, in certain applications, the compression can also result in a separation, for example in that fluids such as water are extracted from solids by compression.
- a conventional container press consists of an electric motor that drives a hydraulic pump, one or more (usually double-acting) cylinders that move a pressure plate in a container, and a hydraulic circuit with a 2/2 or 2/3-way valve between the pump and cylinder.
- the hydraulic valve is switched in such a way that the cylinder advances the pressure plate when the pump is running in order to compact material in the container in front of the pressure plate.
- the feed is stopped and the cylinder can be retracted again, for example by switching the valve, in order to pull back the pressure plate and create new space for further material to be compacted.
- Such systems are usually supplied with energy either via a local power connection, preferably a three-phase connection for the pump motor, or, particularly in the case of mobile systems such as garbage trucks, by electricity provided by a generator driven by an internal combustion engine becomes.
- a stationary truck is driven by an internal combustion engine
- its internal combustion engine has to run at idle to a certain extent to operate the press, which is outside of a favorable operating point, and as a result disproportionately high emissions are generated.
- a simple control of the pump and thus the power of the press via the supplied current is made possible.
- Other parameters can also be recorded in the controller, for example, the pump can be switched off if the hydraulic pressure exceeds a certain level (because further compression of the filling material is no longer possible), or if the cylinder is in an end position.
- electrohydraulics Although only electrohydraulic systems are explained in more detail in this application, it is obvious to those skilled in the art that electropneumatically operated systems can also be used analogously, so electrohydraulics could also be referred to as “electrofluidics”. However, since this term is not common in the field, the term “electrohydraulics” will be used instead of “electrofluidics” in the following, even if pneumatic applications do not differ in principle from electrohydraulic applications with regard to the operating principle of the present invention and therefore also fall within the scope of the claims fall.
- the DE 3041630 A1 explains a garbage truck that has an electrohydraulic drive for compacting the collected garbage.
- This publication deals with the electrohydraulic control of the loading, pressing and emptying device of the garbage truck.
- the core idea of the pamphlet is to Standstill of the vehicle, eg to load the garbage, to supply the electrohydraulic drive via an accumulator, which is charged while driving via the vehicle's diesel engine.
- the required energy is obtained during driving by "running along", recuperation, etc., which results in better fuel use and the possibility of switching off the internal combustion engine (the diesel engine) when the vehicle is stationary, which leads to a reduction in noise and gas emissions.
- the present invention proposes creating a drive module for a fluid-operated device with an electric motor, a fluid pump that can be driven by the electric motor, and a power supply for the electric motor.
- the power supply includes at least one accumulator arrangement capable of supplying the electric motor with energy at least intermittently.
- all components of the drive module are mounted on a support frame that can be used in different devices.
- the module preferably additionally comprises a connection for an external power supply and an electrical controller capable of selectively supplying power to the electric motor from the external power supply and/or the accumulator arrangement, charging the accumulator arrangement with externally supplied power and supplying power from the accumulator arrangement deliver to external consumers.
- the motor is preferably a DC motor that can use the current from the accumulator arrangement without further conversion. If alternating current is available externally, an external power supply outputs the current, for example via an AC/DC converter, which supplies the electric motor, charges the accumulator arrangement and possibly direct current for other tasks such as charging external accumulators can provide.
- an AC motor to which energy from the accumulator arrangement is supplied rather seldom and then via a suitable inverter.
- the drive module according to the invention particularly preferably includes a further connection for a DC power supply and is capable of receiving direct current from an external source and suitably converting the received direct current and using it to operate the electric motor, to charge the accumulator arrangement and/or to supply it to external consumers.
- a further connection for a DC power supply is capable of receiving direct current from an external source and suitably converting the received direct current and using it to operate the electric motor, to charge the accumulator arrangement and/or to supply it to external consumers.
- Such an external DC connection can receive direct current from various sources, for example from solar collectors or from the vehicle electrical system. This direct current can then be used either directly or after a DC/DC conversion to operate the drive module and/or to charge the accumulators.
- the drive module according to the invention also includes sensors for detecting operating parameters and a control device that controls the drive module based on the operating parameters and inputs from a user.
- the control device is preferably programmable in order to be able to flexibly adapt the drive module to different requirements.
- the sensors can also be provided on the fluid-operated device. In this case, they are coupled to the control device via connectors in such a way that the control device can process the operating parameters.
- the operating parameters can include a pressure in the fluid system, a distance covered by an extended cylinder piston, a state of charge of the accumulator arrangement, various wear indicators such as the frequency of movement or the number of charging cycles of the accumulator arrangement, user inputs and the like.
- the drive module and thus the fluid-operated device are controlled on the basis of these operating parameters.
- the operating parameters can also be queried and transmitted to other devices or the IoT ("Internet of Things") and queried and reprogrammed by remote control.
- the external AC connection described above is particularly preferably a connection to the usual household electricity, ie for example in Europe a connection for 230 V/50 Hz alternating current.
- the drive module can be installed in a wide variety of machines that can be operated with household electricity of this type, so that it can be manufactured in large numbers and therefore more economically.
- the complete module according to the invention can be of compact design and can be used as a common part in different machines.
- a press structure for example a container press, with a drive module as described above is particularly preferably used.
- a container press no longer has to be connected to three-phase current, but can work with alternating current (household electricity) thanks to the lower power required, because the additional power required at short notice can be provided via the accumulator arrangement.
- the drive module including the accumulator arrangement, can preferably also be flanged directly to a control block of the press, which contains the valve arrangement and any associated sensors. This reduces vibrations in the overall system and thus results in noise insulation.
- the system can be very compact, so that despite the additional functions for the module, no space is required in the actual press room.
- heat transfer between the accumulator arrangement and the control block is also possible in this way, which can lead to temperature equalization and thus to more favorable operating conditions.
- the press structure has a direct current supply connection as described above, this can be provided for supply via solar modules.
- the power supply can be largely or exclusively provided by solar modules, depending on the frequency and duration of use. This allows the system to become energy self-sufficient.
- Power generators for the energy supply conceivable, such as fuel cells, small wind turbines or water turbines. If the system is installed, for example, on a motor vehicle, in particular a vehicle with an internal combustion engine, it can also be connected to the on-board network of this motor vehicle, so that a (partially) self-sufficient power supply by the vehicle is possible.
- the invention thus creates a compact, highly integrated drive module, for example for container presses, which uses an accumulator arrangement as the main energy source.
- the structure of the motor with (relatively heavy) accumulators and fixed connections for the supply and discharge of hydraulic oil leads to less susceptibility to vibration due to the compactly arranged mass and thus to reduced noise and wear. Since there is no need for a separate bellhousing and the piping in the module and for connections to an external machine can also be optimised, there are also cost and space savings. If this complete drive solution is also available ready-to-install for any machine with similar electro-hydraulic parameters, further savings can be made in design and installation.
- the accumulator arrangement when the system is connected to the mains, can obtain a peak power which is higher than that which is being loaded on the mains.
- the power supply can therefore be designed to be weaker and, for example, a power supply via a standard household Schuko socket is sufficient, even if the peak power of the drive module (and the device equipped with it) exceeds the connection value of such a socket.
- the drive module is compact and has only a few standardized connections, installation in an overall device can be simplified. Due to the few hydraulic connections to be connected during installation (the connections within the module are already pre-assembled), the risk of leakage during operation is also reduced.
- 1 12 is a view showing a configuration of a press container having a drive module according to a first embodiment of the present disclosure.
- the drive module 10 includes, in addition to an electric motor (hereinafter referred to as motor) 1, a pump 4 and an accumulator arrangement 20, a valve circuit for operating a container press (not shown) with press cylinders 7.
- the valve circuit enables the pump 4 to deliver To promote hydraulic oil from an oil sump (oil tank) to the press cylinders 7 and away from them in such a way that the pistons of the press cylinders 7 are retracted and extended.
- Various safety valves are also provided on the module 10, the use of which is known to those skilled in the art and which are therefore not explained further here.
- sensors (not shown here) can be provided, for example for oil pressure, oil temperature, battery charge management or engine operating parameters.
- hydraulic connections are provided for flanging to the corresponding lines of the container press.
- the module 10 includes a controller 30 that controls the engine 1, the accumulator assembly 20 and the valve assembly.
- the control device 30 is a programmable RC controller. Intelligent control and regulation functions can be performed on the controller for the motor 1, the overall device (the container press, for example the stroke of the cylinders), and/or for the charging management of the accumulator arrangement 20.
- the container press for example the stroke of the cylinders
- the control device 30 can also enable recuperation if the motor 1 overruns or elastically “springs back”.
- functionalities of the "Internet of Things" (IoT) in the control device can be implemented in the control device.
- IoT Internet of Things
- connections for direct and alternating current are also provided on the module 10 of the embodiment.
- the direct current can, for example, be emitted by solar collectors, an on-board network of a motor vehicle, a fuel cell or the like and is used in the present embodiment to charge the accumulator arrangement 20 and/or to operate the motor without further conversion.
- the alternating current is typically fed in via a conventional (domestic) alternating current connection, e.g. with 230V/50Hz, but can also be fed in via a three-phase connection.
- the three-phase or alternating current in this embodiment is rectified via a charge controller or AC/DC converter (not shown) before being fed into the main system and is sent by the control device to the motor 1, the accumulator arrangement 20 and/or as required. or other consumers such as an additional connection (not shown) for additional devices.
- the accumulator arrangement 20 preferably comprises Li-ion accumulators, for example with a DC operating voltage of 48V.
- These rechargeable batteries can either be permanently installed or installed in the drive module 10 so that they can be easily removed and replaced, that is to say detachably. This means that the range can be easily diversified by changing the capacity of the batteries with otherwise identical modules.
- the motor 1 is adapted to the output voltage of the accumulator arrangement 20, as are the other electrical components of the module 10. This results in further energy savings by eliminating converter losses.
- the accumulator arrangement 20 can be charged in various ways: accumulators can be charged and changed externally, charging can take place via the power connection, or regenerative energy sources such as solar panels are set up next to or on the container in order to charge the accumulators to load. Such solar panels can, for example, convert solar energy for charging the accumulator arrangement 20 while driving for use in a motor vehicle and/or while using the container press.
- the sensor system can be adapted and used, for example, to detect power peaks and thereby prevent premature wear.
- sensor data can be used to document the filling quantity and the filling material. If other parameters are also read into the control device, e.g. localization via GPS (also as anti-theft protection) or the type of waste, container weight, ideal pressing characteristics or the filling level and thus a suitable time for collection can also be derived from this.
- the drive module and thus the press can be operated either manually via switches on the module or online or by remote control.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
Die vorliegende Erfindung betrifft ein Antriebsmodul (10) vorzugsweise für eine elektrohydraulische Presse, beispielsweise eine Containerpresse. Das Modul umfasst mindestens einen Elektromotor (1), eine durch den Elektromotor (1) antreibbare Fluidpumpe (4) und eine Akkumulatoranordnung (20), die dazu fähig ist, den Elektromotor (1) mit Energie zu versorgen. Zumindest der Elektromotor (1), die Fluidpumpe (4) und die Akkumulatoranordnung (20) sind auf einem Träger montiert und als Baugruppe austauschbar.The present invention relates to a drive module (10), preferably for an electrohydraulic press, for example a container press. The module comprises at least one electric motor (1), a fluid pump (4) drivable by the electric motor (1) and an accumulator arrangement (20) capable of supplying the electric motor (1) with energy. At least the electric motor (1), the fluid pump (4) and the accumulator arrangement (20) are mounted on a carrier and can be exchanged as an assembly.
Description
Die vorliegende Offenbarung betrifft ein Antriebsmodul für ein elektrohydraulisches System, insbesondere für relativ einfache hydraulische Steuerungen mit geringen Anforderungen an die Präzision, wie die Steuerung eines Aufbaus mit doppeltwirkenden Zylindern. Besonders gut einsetzbar ist dieses System in Containerpressen.The present disclosure relates to a drive module for an electro-hydraulic system, in particular for relatively simple hydraulic controls with low precision requirements, such as the control of a structure with double-acting cylinders. This system can be used particularly well in container presses.
Containerpressen als elektrohydraulische Systeme sind im Wesentlichen bekannt. Sie dienen dazu, ein Füllgut, beispielsweise Hausmüll, Papier, Altkleider oder dergleichen, zu verdichten, um beim Transport oder der Entsorgung Platz zu sparen. Zudem kann durch das Zusammendrücken bei bestimmten Anwendungen auch eine Separation erfolgen, indem beispielsweise Fluide wie Wasser durch das Zusammenpressen aus Feststoffen extrahiert werden.Container presses as electrohydraulic systems are essentially known. They serve to compress a filling, for example household waste, paper, old clothes or the like, in order to save space during transport or disposal. In addition, in certain applications, the compression can also result in a separation, for example in that fluids such as water are extracted from solids by compression.
Eine herkömmliche Containerpresse umfasst einen Elektromotor, der eine Hydraulikpumpe antreibt, einen oder mehrere (meist doppeltwirkende) Zylinder, die eine Druckplatte in einem Container verschieben, sowie eine Hydraulikschaltung mit einem 2/2 oder 2/3-Wegeventil zwischen Pumpe und Zylinder. Das Hydraulikventil wird so geschaltet, dass der Zylinder bei laufender Pumpe die Druckplatte vorschiebt, um ein vor der Druckplatte liegendes Material im Container zu verdichten. Bei ausreichender Verdichtung (erkennbar am Zylinderweg oder dem Druckanstieg im System) wird der Vorschub gestoppt, und es kann beispielsweise durch Umschalten des Ventils der Zylinder wieder eingezogen werden, um die Druckplatte zurückzuziehen und neuen Platz für weiteres zu verdichtendes Material zu schaffen.A conventional container press consists of an electric motor that drives a hydraulic pump, one or more (usually double-acting) cylinders that move a pressure plate in a container, and a hydraulic circuit with a 2/2 or 2/3-way valve between the pump and cylinder. The hydraulic valve is switched in such a way that the cylinder advances the pressure plate when the pump is running in order to compact material in the container in front of the pressure plate. When the compaction is sufficient (recognisable by the cylinder travel or the pressure increase in the system), the feed is stopped and the cylinder can be retracted again, for example by switching the valve, in order to pull back the pressure plate and create new space for further material to be compacted.
Üblicherweise erfolgt die Energieversorgung derartiger Systeme entweder über einen lokalen Stromanschluss, vorzugsweise einen Drehstromanschluss für den Pumpenmotor oder, insbesondere bei mobilen Systemen wie z.B. Müllwagen, durch elektrischen Strom, der von einem mittels Brennkraftmaschine angetriebenen Generator bereitgestellt wird. Im Fall des Antriebs über eine Brennkraftmaschine beispielsweise eines stehenden LKWs ergibt sich der Nachteil, dass dessen Brennkraftmaschine zum Betrieb der Presse gewissermaßen mit Standgas laufen muss, was außerhalb eines günstigen Betriebspunkts liegt, und folglich unverhältnismäßig hohe Emissionen erzeugt werden. Dennoch wird so eine einfache Steuerung der Pumpe und damit der Leistung der Presse über den zugeführten Strom ermöglicht. Bei der Steuerung können noch weitere Parameter erfasst werden, so kann die Pumpe abgeschaltet werden, wenn der Hydraulikdruck ein bestimmtes Maß übersteigt (weil die weitere Verdichtung des Füllguts nicht mehr möglich ist), oder sich der Zylinder in einer Endlage befindet.Such systems are usually supplied with energy either via a local power connection, preferably a three-phase connection for the pump motor, or, particularly in the case of mobile systems such as garbage trucks, by electricity provided by a generator driven by an internal combustion engine becomes. If, for example, a stationary truck is driven by an internal combustion engine, there is the disadvantage that its internal combustion engine has to run at idle to a certain extent to operate the press, which is outside of a favorable operating point, and as a result disproportionately high emissions are generated. Nevertheless, a simple control of the pump and thus the power of the press via the supplied current is made possible. Other parameters can also be recorded in the controller, for example, the pump can be switched off if the hydraulic pressure exceeds a certain level (because further compression of the filling material is no longer possible), or if the cylinder is in an end position.
Sofern diese bekannten Containerpressen nicht wie vorstehend beschrieben im Fahrzeug eingebaut sind und über ein Fahrzeugbordnetz versorgt werden, weisen sie meist einen Energieversorgungsanschluss für den Motor über von außen zugeführten Drehstrom auf. Dadurch sind diese Pressen ortsgebunden bzw. nur dort einsetzbar, wo ein entsprechender Stromanschluss vorhanden ist. Ist die Stromversorgung unmöglich, weil der Einsatzort verlegt werden muss oder schlicht der Strom ausfällt, kann auch die Containerpresse nicht betrieben werden. Vergleichbare Schwierigkeiten können auch bei anderen (teil-)stationären hydraulischen Maschinen auftreten, die standardmäßig mit einer elektrisch angetriebenen Pumpe betrieben werden, wie Häckslern, Schreddern, Holzspaltern, Mischern, Scherenhubtischen oder Kleinpressen etc.If these known container presses are not installed in the vehicle as described above and are supplied via a vehicle electrical system, they usually have an energy supply connection for the motor via a three-phase current supplied from the outside. As a result, these presses are stationary or can only be used where there is a corresponding power connection. If the power supply is impossible because the place of use has to be relocated or the power simply fails, the container press cannot be operated either. Comparable difficulties can also occur with other (partly) stationary hydraulic machines that are operated as standard with an electrically driven pump, such as chippers, shredders, wood splitters, mixers, scissor lift tables or small presses, etc.
Obwohl in dieser Anmeldung ausschließlich elektrohydraulische Systeme genauer erläutert werden, ist für Fachleute offensichtlich, dass auch elektropneumatisch betriebene Systeme analog einsetzbar sind, die Elektrohydraulik also auch als "Elektrofluidik" bezeichnet werden könnte. Da dieser Begriff aber im Fachgebiet nicht üblich ist, wird im Folgenden weiter der Begriff "Elektrohydraulik" statt "Elektrofluidik" verwendet, selbst wenn sich pneumatische Anwendungen prinzipiell hinsichtlich des Wirkprinzips der vorliegenden Erfindung nicht von elektrohydraulischen Anwendungen unterscheiden und daher auch unter den Schutzbereich der Ansprüche fallen.Although only electrohydraulic systems are explained in more detail in this application, it is obvious to those skilled in the art that electropneumatically operated systems can also be used analogously, so electrohydraulics could also be referred to as “electrofluidics”. However, since this term is not common in the field, the term "electrohydraulics" will be used instead of "electrofluidics" in the following, even if pneumatic applications do not differ in principle from electrohydraulic applications with regard to the operating principle of the present invention and therefore also fall within the scope of the claims fall.
Die
Ausgehend von diesem bekannten Stand der Technik schlägt die vorliegende Erfindung vor, ein Antriebsmodul für eine fluidbetriebene Vorrichtung mit einem Elektromotor, einer durch den Elektromotor antreibbaren Fluidpumpe und einer Stromversorgung für den Elektromotor zu schaffen. Die Stromversorgung umfasst mindestens eine Akkumulatoranordnung, die dazu fähig ist, den Elektromotor zumindest zeitweise mit Energie zu versorgen. Erfindungsgemäß sind sämtliche Bauteile des Antriebsmoduls auf ein Trägergestell montiert, das in unterschiedlichen Geräten einsetzbar ist.Proceeding from this known prior art, the present invention proposes creating a drive module for a fluid-operated device with an electric motor, a fluid pump that can be driven by the electric motor, and a power supply for the electric motor. The power supply includes at least one accumulator arrangement capable of supplying the electric motor with energy at least intermittently. According to the invention, all components of the drive module are mounted on a support frame that can be used in different devices.
Beim Einbau eines derartigen Moduls in eine dafür vorgesehene Presse (oder ein anderes elektrohydraulisch betriebenes Gerät wie einen Häcksler oder dergleichen) müssen lediglich die Hydraulikleitungen angeflanscht und eventuelle Sensorikleitungen zusammengesteckt werden. Dadurch ergibt sich ein einfacherer Einbau und eine Kostenersparnis durch Lose mit größeren Stückzahlen, weil für verschiedene Maschinen dasselbe Modul eingesetzt werden kann.When installing such a module in a press provided for this purpose (or another electro-hydraulically operated device such as a chopper or the like), only the hydraulic lines have to be flanged on and any sensor lines plugged together. This results in simpler installation and cost savings through batches with larger quantities, because the same module can be used for different machines.
Das Modul umfasst vorzugsweise zusätzlich einen Anschluss für eine externe Stromversorgung sowie eine elektrische Steuerung, die dazu fähig ist, dem Elektromotor wahlweise Strom von der externen Stromversorgung und/oder der Akkumulatoranordnung zuzuführen, die Akkumulatoranordnung mit extern zugeführtem Strom zu laden sowie Strom aus der Akkumulatoranordnung an externe Verbraucher abzugeben. Um eine einfache und verlustfreie Umsetzung des gespeicherten Stroms zu erzielen, ist der Motor dabei vorzugsweise ein Gleichstrommotor, der den Strom aus der Akkumulatoranordnung ohne weitere Wandlung nutzen kann. Falls extern Wechselstrom zu Verfügung steht, gibt eine externe Stromversorgung den Strom beispielsweise über einen AC/DC-Wandler ab, der den Elektromotor versorgen, die Akkumulatoranordnung laden sowie eventuell Gleichspannung für weitere Aufgaben wie das Laden externen Akkus bereitstellen kann. Alternativ ist insbesondere beim normalerweise stationären Einsatz an einem Wechsel- oder Drehstromnetz auch vorstellbar, einen Wechselstrommotor zu nutzen, dem Energie aus der Akkumulatoranordnung eher selten und dann über einen passenden Wechselrichter zugeführt wird.The module preferably additionally comprises a connection for an external power supply and an electrical controller capable of selectively supplying power to the electric motor from the external power supply and/or the accumulator arrangement, charging the accumulator arrangement with externally supplied power and supplying power from the accumulator arrangement deliver to external consumers. In order to achieve a simple and loss-free conversion of the stored current, the motor is preferably a DC motor that can use the current from the accumulator arrangement without further conversion. If alternating current is available externally, an external power supply outputs the current, for example via an AC/DC converter, which supplies the electric motor, charges the accumulator arrangement and possibly direct current for other tasks such as charging external accumulators can provide. Alternatively, particularly in the case of normally stationary use on an AC or three-phase network, it is also conceivable to use an AC motor to which energy from the accumulator arrangement is supplied rather seldom and then via a suitable inverter.
Besonders bevorzugt umfasst das erfindungsgemäße Antriebsmodul einen weiteren Anschluss für eine Gleichstromversorgung und ist dazu fähig, Gleichstrom von einer externen Quelle aufzunehmen und den aufgenommenen Gleichstrom geeignet zu wandeln und zum Betrieb des Elektromotors, zum Laden der Akkumulatoranordnung und/oder zur Abgabe an externe Verbraucher einzusetzen. Ein solcher externer Gleichstromanschluss kann Gleichstrom von verschiedenen Quellen aufnehmen, beispielsweise von Solarkollektoren oder aus dem Bordnetz von Fahrzeugen. Dieser Gleichstrom kann dann entweder direkt oder nach einer DC/DC-Wandlung zum Betrieb des Antriebsmoduls und/oder zum Laden der Akkumulatoren eingesetzt werden.The drive module according to the invention particularly preferably includes a further connection for a DC power supply and is capable of receiving direct current from an external source and suitably converting the received direct current and using it to operate the electric motor, to charge the accumulator arrangement and/or to supply it to external consumers. Such an external DC connection can receive direct current from various sources, for example from solar collectors or from the vehicle electrical system. This direct current can then be used either directly or after a DC/DC conversion to operate the drive module and/or to charge the accumulators.
Weiter vorzugsweise umfasst das erfindungsgemäße Antriebsmodul auch Sensoren zur Erfassung von Betriebsparametern sowie eine Steuervorrichtung, die die Steuerung des Antriebsmoduls anhand der Betriebsparameter und von Eingaben eines Benutzers vornimmt. Die Steuervorrichtung ist vorzugsweise programmierbar, um das Antriebsmodul flexibel an unterschiedliche Anforderungen anpassen zu können. Die Sensoren können alternativ auch an der fluidbetriebenen Vorrichtung vorgesehen sein. In diesem Fall werden sie mit der Steuervorrichtung über Steckverbinder so gekoppelt, dass die Steuervorrichtung die Betriebsparameter verarbeiten kann. Zu den Betriebsparametern können ein Druck im Fluidsystem, ein zurückgelegter Weg eines ausgefahrenen Zylinderkolbens, ein Ladezustand der Akkumulatoranordnung, diverse Verschlei-ßindikatoren wie die Häufigkeit einer Bewegung oder die Anzahl der Ladezyklen der Ackumulatoranordnung, Benutzereingaben und dergleichen gehören. Auf der Grundlage dieser Betriebsparameter wird das Antriebsmodul und damit die fluidbetriebene Vorrichtung gesteuert. Zudem können die Betriebsparameter auch abgefragt und an weitere Geräte bzw. das IoT ("Internet of Things") übermittelt sowie per Fernsteuerung abgefragt und umprogrammiert werden.More preferably, the drive module according to the invention also includes sensors for detecting operating parameters and a control device that controls the drive module based on the operating parameters and inputs from a user. The control device is preferably programmable in order to be able to flexibly adapt the drive module to different requirements. Alternatively, the sensors can also be provided on the fluid-operated device. In this case, they are coupled to the control device via connectors in such a way that the control device can process the operating parameters. The operating parameters can include a pressure in the fluid system, a distance covered by an extended cylinder piston, a state of charge of the accumulator arrangement, various wear indicators such as the frequency of movement or the number of charging cycles of the accumulator arrangement, user inputs and the like. The drive module and thus the fluid-operated device are controlled on the basis of these operating parameters. In addition, the operating parameters can also be queried and transmitted to other devices or the IoT ("Internet of Things") and queried and reprogrammed by remote control.
Besonders bevorzugt ist der vorstehend beschriebene externe Wechselstromanschluss ein Anschluss an den üblichen Haushaltsstrom, also beispielsweise in Europa ein Anschluss für 230 V/50 Hz Wechselstrom. Dadurch lässt sich das Antriebsmodul in verschiedenste Maschinen einbauen, die mit derartigem Haushaltsstrom betreibbar sind, so dass es in großen Stückzahlen und damit wirtschaftlicher zu fertigen ist.The external AC connection described above is particularly preferably a connection to the usual household electricity, ie for example in Europe a connection for 230 V/50 Hz alternating current. As a result, the drive module can be installed in a wide variety of machines that can be operated with household electricity of this type, so that it can be manufactured in large numbers and therefore more economically.
Das komplette erfindungsgemäße Modul kann kompakt aufgebaut und als Gleichteil in unterschiedlichen Maschinen einsetzbar sein. Zudem ist vorstellbar, eine entsprechende Baureihe, beispielsweise mit unterschiedlich starken Akkumulatoren und/oder Elektromotoren und Pumpen mit Modulen zu gestalten, die im Wesentlichen gleiche Einbaumaße aufweisen. Dadurch können die Module diversifiziert in Maschinen beispielsweise mit unterschiedlicher Leistung eingesetzt werden, ohne die Montageabläufe zu beeinträchtigen. Dies führt zu einer Kostenersparnis bei der Montage.The complete module according to the invention can be of compact design and can be used as a common part in different machines. In addition, it is conceivable to design a corresponding series, for example with accumulators and/or electric motors and pumps of different strengths, with modules that have essentially the same installation dimensions. This means that the modules can be used diversified in machines with different outputs, for example, without affecting the assembly processes. This leads to cost savings during assembly.
Besonders bevorzugt wird ein Pressenaufbau, beispielsweise eine Containerpresse, mit einem Antriebsmodul wie vorstehend beschrieben verwendet. Eine derartige Containerpresse muss im Gegensatz zu bisher üblichen Pressen nicht mehr an Drehstrom angeschlossen werden, sondern kann dank der geringeren benötigten Leistung mit Wechselstrom (Haushaltsstrom) arbeiten, weil kurzfristig erforderliche Mehrleistung über die Akkumulatoranordnung bereitgestellt werden kann. Dadurch wird die Installation einfacher. Bevorzugt kann das Antriebsmodul inklusive der Akkumulatoranordnung außerdem direkt an einem Steuerblock der Presse angeflanscht werden, der die Ventilanordnung und eventuell zugehörige Sensoren enthält. Dadurch werden Schwingungen im Gesamtsystem reduziert und somit ergibt sich eine Geräuschdämmung. Zudem kann das System dadurch sehr kompakt sein, so dass trotz der zusätzlichen Funktionen für das Modul kein Platz im eigentlichen Pressenraum benötigt wird. Schließlich ist auf diese Weise auch eine Wärmeübertragung zwischen Akkumulatoranordnung und Steuerblock möglich, die zu einem Temperaturausgleich und damit zu günstigeren Betriebsbedingungen führen kann.A press structure, for example a container press, with a drive module as described above is particularly preferably used. In contrast to conventional presses, such a container press no longer has to be connected to three-phase current, but can work with alternating current (household electricity) thanks to the lower power required, because the additional power required at short notice can be provided via the accumulator arrangement. This will make installation easier. The drive module, including the accumulator arrangement, can preferably also be flanged directly to a control block of the press, which contains the valve arrangement and any associated sensors. This reduces vibrations in the overall system and thus results in noise insulation. In addition, the system can be very compact, so that despite the additional functions for the module, no space is required in the actual press room. Finally, heat transfer between the accumulator arrangement and the control block is also possible in this way, which can lead to temperature equalization and thus to more favorable operating conditions.
Falls der Pressenaufbau wie vorstehend beschrieben einen Gleichstromversorgungsanschluss aufweist, kann dieser zur Versorgung über Solarmodule vorgesehen sein. Insbesondere bei stationären Pressen im Freien, beispielsweise zur Kartonagenverdichtung, kann die Stromversorgung je nach Häufigkeit und Dauer des Einsatzes weitgehend oder ausschließlich über Solarmodule erfolgen. Dadurch kann das System energieautark werden. Selbstverständlich sind neben Solarmodulen auch andere Stromerzeuger für die Energieversorgung denkbar, wie Brennstoffzellen, Kleinwindkraftanlagen oder Wasserturbinen. Falls das System beispielsweise auf einem Kraftfahrzeug, insbesondere ein Fahrzeug mit einer Brennkraftmaschine, montiert ist, kann darüber hinaus ein Anschluss ans Bordnetz dieses Kraftfahrzeugs erfolgen, so dass eine (teil-) autarke Stromversorgung durch das Fahrzeug möglich ist.If the press structure has a direct current supply connection as described above, this can be provided for supply via solar modules. Especially in the case of stationary presses outdoors, for example for compacting cardboard boxes, the power supply can be largely or exclusively provided by solar modules, depending on the frequency and duration of use. This allows the system to become energy self-sufficient. Of course, in addition to solar modules, there are others Power generators for the energy supply conceivable, such as fuel cells, small wind turbines or water turbines. If the system is installed, for example, on a motor vehicle, in particular a vehicle with an internal combustion engine, it can also be connected to the on-board network of this motor vehicle, so that a (partially) self-sufficient power supply by the vehicle is possible.
Durch die Erfindung wird somit ein kompaktes, hoch integriertes Antriebsmodul beispielsweise für Containerpressen geschaffen, das als Hauptenergiequelle eine Akkumulatoranordnung nutzt.The invention thus creates a compact, highly integrated drive module, for example for container presses, which uses an accumulator arrangement as the main energy source.
Außerdem führt der Aufbau des Motors mit (relativ schweren) Akkumulatoren und festen Anschlüssen für die Zu- und Abfuhr von Hydrauliköl durch die kompakt angeordnete Masse zu geringerer Schwingungsanfälligkeit und dadurch zu verringertem Lärm und Verschleiß. Da ein gesonderter Pumpenträger wegfällt und auch die Verrohrung im Modul und zu Anschlüssen einer externen Maschine optimiert werden kann, ergibt sich zudem eine Kosten- und Platzeinsparung. Wird diese komplette Antriebslösung zudem einbaufertig für beliebige Maschinen mit ähnlichen elektrohydraulischen Kennwerten vorgehalten, ergeben sich weitere Einsparungen bei Konstruktion und Installation.In addition, the structure of the motor with (relatively heavy) accumulators and fixed connections for the supply and discharge of hydraulic oil leads to less susceptibility to vibration due to the compactly arranged mass and thus to reduced noise and wear. Since there is no need for a separate bellhousing and the piping in the module and for connections to an external machine can also be optimised, there are also cost and space savings. If this complete drive solution is also available ready-to-install for any machine with similar electro-hydraulic parameters, further savings can be made in design and installation.
Durch die Akkumulatoranordnung kann, wenn das System am Stromnetz angeschlossen ist, eine Spitzenleitung abgerufen werden, die höher ist als die, mit der das Stromnetz belastet wird. Daher kann die Stromversorgung schwächer ausgelegt werden und es reicht beispielsweise eine Stromversorgung über eine haushaltsübliche Schuko-Steckdose aus, selbst wenn die Spitzenleitung des Antriebsmoduls (und der damit bestückten Vorrichtung) den Anschlusswert einer derartigen Steckdose übersteigt.The accumulator arrangement, when the system is connected to the mains, can obtain a peak power which is higher than that which is being loaded on the mains. The power supply can therefore be designed to be weaker and, for example, a power supply via a standard household Schuko socket is sufficient, even if the peak power of the drive module (and the device equipped with it) exceeds the connection value of such a socket.
Weil das Antriebsmodul kompakt ist und nur wenige genormte Anschlüsse aufweist, kann der Einbau in eine Gesamtvorrichtung vereinfacht werden. Aufgrund der wenigen beim Einbau anzuschließenden Hydraulikanschlüsse (die Verbindungen innerhalb des Moduls sind ja bereits vormontiert) sinkt zudem die Gefahr einer Leckage im Betrieb.Because the drive module is compact and has only a few standardized connections, installation in an overall device can be simplified. Due to the few hydraulic connections to be connected during installation (the connections within the module are already pre-assembled), the risk of leakage during operation is also reduced.
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden durch die nachfolgende Beschreibung eines Ausführungsbeispiels anhand der beiliegenden Figuren deutlich.Further features and advantages of the present invention become clear from the following description of an exemplary embodiment with reference to the attached figures.
Nachstehend wird ein Ausführungsbeispiel der vorliegenden Offenbarung auf der Basis der zugehörigen Figur beschrieben.Hereinafter, an embodiment of the present disclosure will be described based on the accompanying figure.
Wie ebenfalls schematisch in
Parallel zur Akkumulatoranordnung 20 sind auf dem Modul 10 der Ausführungsform auch Anschlüsse für Gleich- und Wechselstrom vorgesehen. Der Gleichstrom kann beispielsweise von Solarkollektoren, einem Bordnetz eines Kraftfahrzeugs, einer Brennstoffzelle oder dergleichen abgegeben werden und dient in der vorliegenden Ausführungsform dazu, ohne weitere Umwandlung die Akkumulatoranordnung 20 zu laden und/oder den Motor zu betreiben. Der Wechselstrom wird typischerweise über einen herkömmlichen (Haus-) Wechselstromanschluss z.B. mit 230V/50Hz eingespeist, kann aber auch über einen Drehstromanschluss eingespeist werden. Jedenfalls wird der Dreh- bzw. Wechselstrom in dieser Ausführungsform vor dem Einspeisen in das Hauptsystem über einen (nicht gezeigten) Laderegler bzw. AC/DC-Wandler gleichgerichtet und von der Steuervorrichtung nach dem jeweiligen Bedarf an den Motor 1, die Akkumulatoranordnung 20 und/oder weitere Verbraucher wie einen (nicht gezeigten) zusätzlichen Anschluss für weitere Geräte abgegeben.Parallel to the
Die erfindungsgemäße Akkumulatoranordnung 20 umfasst vorzugsweise Li-Ionen-Akkus, beispielsweise mit einer DC-Betriebsspannung von 48V. Diese Akkus können wahlweise fest eingebaut oder einfach entnehmbar und wechselbar, also lösbar im Antriebsmodul 10 eingebaut sein. Dadurch kann über eine Kapazitätsänderung der Akkus bei ansonsten gleichen Modulen auch eine einfache Angebotsdiversifizierung erfolgen. Der Motor 1 ist an die Abgabespannung der Akkumulatoranordnung 20 angepasst, ebenso auch die weiteren elektrischen Komponenten des Moduls 10. Dadurch ergibt sich eine weitere Energieeinsparung durch Eliminierung von Wandlerverlusten.The
Wie vorstehend bereits erwähnt wurde, ist ein Laden der Akkumulatoranordnung 20 auf verschiedene Weise möglich: So können Akkus extern geladen und gewechselt werden, das Laden kann über den Stromanschluss erfolgen, oder regenerative Energiequellen wie Solarpanels werden neben oder auf dem Container aufgebaut, um die Ackus zu laden. Derartige Solarpanels können beispielsweise während der Fahrt zum Einsatz auf einem Kraftfahrzeug und/oder während des Einsatzes der Containerpresse Sonnenenergie zum Laden der Akkumulatoranordnung 20 umwandeln.As already mentioned above, the
Durch den modularen Aufbau des Antriebsmoduls wie in der vorliegenden Ausführungsform und in den Ansprüchen dargelegt kann die Sensorik angepasst und dazu genutzt werden, beispielsweise Leistungsspitzen zu erkennen und dadurch vorzeitigem Verschleiß vorzubeugen. Im speziellen Fall einer Containerpresse können Sensordaten dazu genutzt werden, die Füllmenge und das Füllmaterial zu dokumentieren. Werden der Steuervorrichtung zudem weitere Parameter, z.B. Lokalisierung über GPS (auch als Diebstahlschutz) oder die Müllsorte, eingelesen, können daraus auch Containergewicht, ideale Presscharakteristik, oder der Füllstand und damit ein passender Zeitpunkt zum Abholen abgeleitet werden. Eine Bedienung der des Antriebsmoduls und damit der Presse kann dabei entweder manuell über Schalter am Modul oder auch online bzw. per Fernsteuerung erfolgen.Due to the modular design of the drive module, as set out in the present embodiment and in the claims, the sensor system can be adapted and used, for example, to detect power peaks and thereby prevent premature wear. In the special case of a container press, sensor data can be used to document the filling quantity and the filling material. If other parameters are also read into the control device, e.g. localization via GPS (also as anti-theft protection) or the type of waste, container weight, ideal pressing characteristics or the filling level and thus a suitable time for collection can also be derived from this. The drive module and thus the press can be operated either manually via switches on the module or online or by remote control.
- 11
- Motorengine
- 44
- Pumpepump
- 77
- Presszylinderpress cylinder
- 1010
- Antriebsmoduldrive module
- 2020
- Akkumulatoranordnungaccumulator arrangement
- 3030
- Steuervorrichtungcontrol device
Claims (10)
zumindest der Elektromotor (1), die Fluidpumpe (4) und die Akkumulatoranordnung (20) auf einem Träger montiert und als Antriebsmodul (10) austauschbar sind.Drive module (10) for a fluid-operated device (7) with an electric motor (1), a fluid pump (4) drivable by the electric motor (1) and an accumulator arrangement (20) capable of supplying the electric motor (1) with energy provide, characterized in that
at least the electric motor (1), the fluid pump (4) and the accumulator arrangement (20) are mounted on a carrier and can be exchanged as a drive module (10).
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DE202021102039.3U DE202021102039U1 (en) | 2021-04-16 | 2021-04-16 | Drive module for an electro-hydraulic system |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2422757A1 (en) * | 1974-05-10 | 1975-11-27 | Haller Gmbh Fahrzeugbau | Refuse container compression mechanism - driving motor mounted on compression plate itself |
DE3041630A1 (en) | 1980-11-05 | 1982-05-13 | Schörling GmbH & Co Waggonbau, 3000 Hannover | Refuse lorry hydraulic collection compaction and discharge device - has hydraulic pump motor connected across generator driven by engine |
EP2347978A1 (en) * | 2010-01-26 | 2011-07-27 | Terberg Machines B.V. | Loading system for lifting and emptying a container |
EP2231435B1 (en) * | 2007-12-31 | 2012-11-28 | Renault Trucks | Hybrid refuse collection vehicle with an equipment electrical power take off |
WO2019006517A1 (en) * | 2017-07-06 | 2019-01-10 | Jonathan Nguyen | Solar powered trash compactor |
CN112030842A (en) * | 2020-09-04 | 2020-12-04 | 北京鸿成科技有限责任公司 | Efficient energy-saving environment-friendly road garbage cleaning vehicle |
-
2021
- 2021-04-16 DE DE202021102039.3U patent/DE202021102039U1/en active Active
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2022
- 2022-04-12 EP EP22167770.1A patent/EP4074965A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2422757A1 (en) * | 1974-05-10 | 1975-11-27 | Haller Gmbh Fahrzeugbau | Refuse container compression mechanism - driving motor mounted on compression plate itself |
DE3041630A1 (en) | 1980-11-05 | 1982-05-13 | Schörling GmbH & Co Waggonbau, 3000 Hannover | Refuse lorry hydraulic collection compaction and discharge device - has hydraulic pump motor connected across generator driven by engine |
EP2231435B1 (en) * | 2007-12-31 | 2012-11-28 | Renault Trucks | Hybrid refuse collection vehicle with an equipment electrical power take off |
EP2347978A1 (en) * | 2010-01-26 | 2011-07-27 | Terberg Machines B.V. | Loading system for lifting and emptying a container |
WO2019006517A1 (en) * | 2017-07-06 | 2019-01-10 | Jonathan Nguyen | Solar powered trash compactor |
CN112030842A (en) * | 2020-09-04 | 2020-12-04 | 北京鸿成科技有限责任公司 | Efficient energy-saving environment-friendly road garbage cleaning vehicle |
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Effective date: 20240319 |