EP4074965A1 - Module d'entraînement pour un système électro-hydraulique - Google Patents

Module d'entraînement pour un système électro-hydraulique Download PDF

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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
Application number
EP22167770.1A
Other languages
German (de)
English (en)
Inventor
Thomas Gellner
Karin Tischler
Oliver GERHARD
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4074965A1 publication Critical patent/EP4074965A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP22167770.1A 2021-04-16 2022-04-12 Module d'entraînement pour un système électro-hydraulique Pending EP4074965A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202021102039.3U DE202021102039U1 (de) 2021-04-16 2021-04-16 Antriebsmodul für ein elektrohydraulisches System

Publications (1)

Publication Number Publication Date
EP4074965A1 true EP4074965A1 (fr) 2022-10-19

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ID=75896740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22167770.1A Pending EP4074965A1 (fr) 2021-04-16 2022-04-12 Module d'entraînement pour un système électro-hydraulique

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EP (1) EP4074965A1 (fr)
DE (1) DE202021102039U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022203138A1 (de) 2022-03-30 2023-10-05 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Ermittlung und Anzeige eines Füllstandes eines Presscontainers, Presscontainer, Computerprogramm und computerlesbares Medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2422757A1 (de) * 1974-05-10 1975-11-27 Haller Gmbh Fahrzeugbau Behaelter fuer pressbares gut, insbesondere muellbehaelter
DE3041630A1 (de) 1980-11-05 1982-05-13 Schörling GmbH & Co Waggonbau, 3000 Hannover Elektrohydraulische steuerung der belade-, press- und entleerungseinrichtung eines muellfahrzeuges
EP2347978A1 (fr) * 2010-01-26 2011-07-27 Terberg Machines B.V. Dispositif de chargement pour lever et vider un récipient
EP2231435B1 (fr) * 2007-12-31 2012-11-28 Renault Trucks Camion à ordures hybride avec prise de force électrique d'équipement
WO2019006517A1 (fr) * 2017-07-06 2019-01-10 Jonathan Nguyen Compacteur de déchets à énergie solaire
CN112030842A (zh) * 2020-09-04 2020-12-04 北京鸿成科技有限责任公司 一种高效的节能环保道路垃圾清理车

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2422757A1 (de) * 1974-05-10 1975-11-27 Haller Gmbh Fahrzeugbau Behaelter fuer pressbares gut, insbesondere muellbehaelter
DE3041630A1 (de) 1980-11-05 1982-05-13 Schörling GmbH & Co Waggonbau, 3000 Hannover Elektrohydraulische steuerung der belade-, press- und entleerungseinrichtung eines muellfahrzeuges
EP2231435B1 (fr) * 2007-12-31 2012-11-28 Renault Trucks Camion à ordures hybride avec prise de force électrique d'équipement
EP2347978A1 (fr) * 2010-01-26 2011-07-27 Terberg Machines B.V. Dispositif de chargement pour lever et vider un récipient
WO2019006517A1 (fr) * 2017-07-06 2019-01-10 Jonathan Nguyen Compacteur de déchets à énergie solaire
CN112030842A (zh) * 2020-09-04 2020-12-04 北京鸿成科技有限责任公司 一种高效的节能环保道路垃圾清理车

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