EP0890746B1 - Device for extracting,converting and storing energy on an unpowered vehicle - Google Patents

Device for extracting,converting and storing energy on an unpowered vehicle Download PDF

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Publication number
EP0890746B1
EP0890746B1 EP97111706A EP97111706A EP0890746B1 EP 0890746 B1 EP0890746 B1 EP 0890746B1 EP 97111706 A EP97111706 A EP 97111706A EP 97111706 A EP97111706 A EP 97111706A EP 0890746 B1 EP0890746 B1 EP 0890746B1
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EP
European Patent Office
Prior art keywords
charging
oil flow
vehicle
pressure accumulator
oil
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.)
Expired - Lifetime
Application number
EP97111706A
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German (de)
French (fr)
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EP0890746A1 (en
Inventor
Manfred Wege
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Bolenz & Schafer Maschinenfabrik GmbH
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Bolenz & Schafer Maschinenfabrik GmbH
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Priority to DE59704604T priority Critical patent/DE59704604D1/en
Priority to EP97111706A priority patent/EP0890746B1/en
Priority to AT97111706T priority patent/ATE205582T1/en
Publication of EP0890746A1 publication Critical patent/EP0890746A1/en
Application granted granted Critical
Publication of EP0890746B1 publication Critical patent/EP0890746B1/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D5/00—Tank wagons for carrying fluent materials
    • B61D5/008—Trackside means for assisting charge or discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • DE-G 91 13 007 shows a cylinder pressure accumulator with a charge oil flow cut-off device.
  • the cylinder is divided into a gas space and an oil space by a flying piston.
  • oil is pumped into the oil space through a pipeline leading into the oil space for the charging oil flow. This is done when used in a hydraulic system on a vehicle that is not equipped with its own drive, for example a railroad car for bulk goods, with a hydraulically actuated unloading device by means of a wheel set pump known per se, which pumps continuously while the vehicle is moving.
  • the charging oil flow is passed without pressure through a return pipeline past the pressure accumulator into an oil tank. From this, the oil is taken out for the next loading process.
  • Such a device which during the drive of a self-propelled vehicle and not equipped with its own energy source, absorbs energy via its wheels and transfers it to a fluid system by means of a wheel set pump, stores it there and makes it available via fluid-cylinder drives, which are generally referred to as working cylinders, is used in transport traffic of bulk goods very advantageous. All that is needed is the control of the working cylinder drive or drives to move the unloading device of the vehicle.
  • a control for a working cylinder which can be acted upon on both sides and can be locked in an end position has become known from DE 42 02 792 C2.
  • This also consists of a pressure medium cylinder drive, which is fed from the same source as the working cylinder.
  • this control must first be switched on manually on the spot, that is, on the vehicle. This requires a lot of personnel. Depending on the type of unloading location, reaching and / or leaving the vehicle is not always safe.
  • the invention is based, for a hydraulically actuated task Unloading device on a vehicle not equipped with its own drive To create device that is suitable to the previously required manual activity on Vehicle to switch on the unloading device to be replaced by technical means do.
  • the invention is based on a device according to the DE-G 91 13 007 in connection with a known hydraulically operated Unloading device as mentioned above.
  • the object is achieved in that in a device according to the preamble of claim 1 in the of the wheelset pump generated oil flow a hydraulic motor with one of these drivable electric generator is included such that the hydraulic motor with the electric generator between a front end of the gas chamber Pressure valve located the charge oil flow shutdown device and the Oil tank is enclosed in the return pipe.
  • a cylinder pressure accumulator 1 is provided as the hydraulic pressure accumulator, in which a flying piston 2 divides the interior into an oil space 3 and a gas space 4.
  • a wheelset pump 5 which receives its drive from an axle of the vehicle when it is moving, an oil flow is passed from a pressureless oil tank 6 through a pipeline 7 via a branch 7a with a check valve 8 into the oil space 3 of the pressure accumulator 1 .
  • the piston 2 is pressed against the gas space 4 and the gas which is under prestress is compressed therein. Energy is extracted from the locomotion of the vehicle and converted into pressure energy, which is stored in the gas space 4 of the pressure accumulator 1 .
  • Another pipeline 9 leads from the oil chamber 3 via a check valve 10 to the hydraulic system (not shown in the drawing) for opening and closing the unloading device of the vehicle.
  • the charging oil flow pipeline 7 leads past the pressure accumulator 1 through a valve 11 located on the gas chamber end wall of the pressure accumulator 1 , which blocks the flow during the unloading process.
  • the valve 11 is opened by a plunger 12 leading out of the gas space 4 .
  • the oil flow can now flow without pressure past the pressure accumulator 1 to the oil tank 6 through the return pipe 7b .
  • a hydraulic motor 13 is enclosed in the return pipeline 7b between the valve 11 on the pressure accumulator 1 and the oil tank 6 and can be non-positively connected to an electric generator 14 .
  • the current generated by this is stored in a connected power store 15 , from which means (not shown in the drawing) for actuating the valves of a control cylinder drive of the discharge device can be fed.
  • the power store 15 is equipped with a known overcharge protection device which overrides the power generator 14 after charging is complete. Then this runs on the hydraulic motor 13 with no load in the return oil flow, which now flows without pressure into the oil tank 6 .
  • a radio receiver (not shown in the drawing) is connected to the power store 15 and can receive radio signals for controlling the vehicle unloading device via a remote control known per se. It is therefore no longer necessary for an operator to have to work on the vehicle with each unloading operation. An operator can control the opening and closing of the unloading device by radio remote control from an optimal location safely and without significant effort or by passing signaling devices on the way of the vehicle.
  • the arrangement of the hydraulic motor 13 in the return pipe 7b shows that the hydraulic motor 13 can only be supplied with energy for driving the power generator 14 after the pressure accumulator 1 has been fully charged by the wheel set pump 5 .
  • the energy that drives the wheel set pump 5 is therefore never used simultaneously, but always in succession for charging the pressure accumulator 1 and driving the power generator 14 via the hydraulic motor 13 . In this way, the charging of both storage tanks is spread over a longer route and counteracts overloading of the locomotive moving the train.

Abstract

The arrangement has an unloading device actuated by a working cylinder drive. It is regulated by a control cylinder drive. There is a hydraulic pressure reservoir (1) with a charge flow switch-off device chargeable via an axle of the vehicle by a pump driven by a wheel-set. The oil flow after charging of the pressure reservoir can be tapped into an oil tank (6) via a return pipeline (7b) which bypasses the reservoir. A hydraulic motor (13) driving an electrical generator (14) is connected into the oil flow generated by the pump.

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Vorrichtungen mit diesen Gattungsmerkmalen sind bereits bekannt. Aus dem DE-G 91 13 007 geht ein Zylinderdruckspeicher mit Lade-Ölstromabschalteinrichtung hervor. Dabei ist der Zylinder durch einen fliegenden Kolben in einen Gasraum und einen Ölraum unterteilt. Zum Aufladen des Druckspeichers, das heißt, zur Kompression des im Gasraum befindlichen Gases, wird durch eine in den Ölraum führende Rohrleitung für den Lade-Ölstrom Öl in den Ölraum gepumpt. Dies geschieht bei der Verwendung in einer Hydraulikanlage an einem nicht mit eigenem Antrieb ausgestatteten Fahrzeug, beispielsweise einem Eisenbahnwaggon für Schüttgüter, mit einer hydraulisch betätigbaren Entladeeinrichtung durch eine an sich bekannte Radsatzpumpe, die während der Fortbewegung des Fahrzeuges ständig pumpt.
Nach beendeter Aufladung des Druckspeichers wird der Lade-Ölstrom drucklos durch eine Rücklaufrohrleitung an dem Druckspeicher vorbei in einen Öltank weitergeleitet. Daraus wird das Öl für den nächsten Ladevorgang wieder entnommen.Devices with these generic features are already known. DE-G 91 13 007 shows a cylinder pressure accumulator with a charge oil flow cut-off device. The cylinder is divided into a gas space and an oil space by a flying piston. To charge the pressure accumulator, that is to say to compress the gas in the gas space, oil is pumped into the oil space through a pipeline leading into the oil space for the charging oil flow. This is done when used in a hydraulic system on a vehicle that is not equipped with its own drive, for example a railroad car for bulk goods, with a hydraulically actuated unloading device by means of a wheel set pump known per se, which pumps continuously while the vehicle is moving.
After charging of the pressure accumulator has ended, the charging oil flow is passed without pressure through a return pipeline past the pressure accumulator into an oil tank. From this, the oil is taken out for the next loading process.

Eine solche Vorrichtung, die während der Fahrt eines selbst antriebslosen und nicht mit einer eigenen Energiequelle ausgestatteten Fahrzeuges über dessen Räder Energie aufnimmt und mittels einer Radsatzpumpe in ein Fluidsystem überführt, dort speichert und über allgemein als Arbeitszylinder bezeichnete Fluid-Zylindertriebe verfügbar macht, ist im Transportverkehr von Schüttgütern sehr vorteilhaft. Es bedarf nur noch der Steuerung des oder der Arbeitszylindertriebe zum Bewegen der Entladeeinrichtung des Fahrzeuges.
Eine Steuerung für einen beidseitig beaufschlagbaren in einer Endlage verriegelbaren Arbeitszylinder ist durch die DE 42 02 792 C2 bekannt geworden. Diese besteht ebenfalls aus einem Druckmittel-Zylindertrieb, der aus der gleichen Quelle gespeist wird, wie der Arbeitszylinder. Jedoch muß diese Steuerung zunächst manuell an Ort und Stelle, das heißt, am Fahrzeug eingeschaltet werden. Das erfordert einen hohen personellen Aufwand. Dabei ist - je nach Art des Entladungsortes - das Erreichen und/oder Verlassen des Fahrzeuges nicht immer ungefährlich.Such a device, which during the drive of a self-propelled vehicle and not equipped with its own energy source, absorbs energy via its wheels and transfers it to a fluid system by means of a wheel set pump, stores it there and makes it available via fluid-cylinder drives, which are generally referred to as working cylinders, is used in transport traffic of bulk goods very advantageous. All that is needed is the control of the working cylinder drive or drives to move the unloading device of the vehicle.
A control for a working cylinder which can be acted upon on both sides and can be locked in an end position has become known from DE 42 02 792 C2. This also consists of a pressure medium cylinder drive, which is fed from the same source as the working cylinder. However, this control must first be switched on manually on the spot, that is, on the vehicle. This requires a lot of personnel. Depending on the type of unloading location, reaching and / or leaving the vehicle is not always safe.

Der Erfindung liegt die Aufgabe zugrunde, für eine hydraulisch betätigbare Entladeeinrichtung an einem nicht mit eigenem Antrieb ausgestatteten Fahrzeug eine Vorrichtung zu schaffen, die geeignet ist, die bisher erforderliche manuelle Tätigkeit am Fahrzeug zum Einschalten der Entladeeinrichtung durch technische Mittel ersetzbar zu machen.The invention is based, for a hydraulically actuated task Unloading device on a vehicle not equipped with its own drive To create device that is suitable to the previously required manual activity on Vehicle to switch on the unloading device to be replaced by technical means do.

Zur Lösung dieser Aufgabe geht die Erfindung aus von einer Vorrichtung gemäß dem DE-G 91 13 007 in Verbindung mit einer an sich bekannten hydraulisch betätigbaren Entladeeinrichtung wie vorstehend erwähnt.To achieve this object, the invention is based on a device according to the DE-G 91 13 007 in connection with a known hydraulically operated Unloading device as mentioned above.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei einer Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 in den von der Radsatzpumpe erzeugten Ölstrom ein Hydraulikmotor mit einem von diesem antreibbaren Elektrogenerator derart eingeschlossen ist, daß der Hydraulikmotor mit dem Elektrogenerator zwischen einem am gasraumseitigen Stirnende des Druckspeichers befindlichen Ventil der Ladeölstrom-Abschalteinrichtung und dem Öltank in die Rücklauf-Rohrleitung eingeschlossen ist.The object is achieved in that in a device according to the preamble of claim 1 in the of the wheelset pump generated oil flow a hydraulic motor with one of these drivable electric generator is included such that the hydraulic motor with the electric generator between a front end of the gas chamber Pressure valve located the charge oil flow shutdown device and the Oil tank is enclosed in the return pipe.

Weitere Merkmale der Erfindung gehen aus den Ansprüchen 2 bis 4 hervor.Further features of the invention emerge from claims 2 to 4.

Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand einer Schemazeichnung näher erläutert. Die Zeichnung beschränkt sich auf denjenigen Teil eines Schaltplanes der Entladeeinrichtung, der die Erfindung betrifft.An embodiment of the invention is described below using a schematic drawing explained in more detail. The drawing is limited to that part of a Circuit diagram of the unloading device, which relates to the invention.

Bei diesem Ausführungsbeispiel ist als Hydraulikdruckspeicher ein Zylinderdruckspeicher 1 vorgesehen, bei dem ein fliegender Kolben 2 den Innenraum in einen Ölraum 3 und einen Gasraum 4 unterteilt. Mit einer Radsatzpumpe 5, die ihren Antrieb von einer Achse des Fahrzeuges bei dessen Fortbewegung erhält, wird aus einem drucklosen Öltank 6 ein Ölstrom durch eine Rohrleitung 7 über einen Abzweig 7a mit einem Rückschlagventil 8 in den Ölraum 3 des Druckspeichers 1 geleitet. Dabei wird der Kolben 2 gegen den Gasraum 4 gedrückt und das in diesem unter Vorspannung befindliche Gas komprimiert. Dabei wird Energie aus der Fortbewegung des Fahrzeuges entnommen und in Druckenergie umgewandelt, die in dem Gasraum 4 des Druckspeichers 1 gespeichert wird. Eine weitere Rohrleitung 9 führt aus dem Ölraum 3 über ein Rückschlagventil 10 zu der in der Zeichnung nicht dargestellten Hydraulikanlage für das Öffnen und Schließen der Entladeeinrichtung des Fahrzeuges.In this embodiment, a cylinder pressure accumulator 1 is provided as the hydraulic pressure accumulator, in which a flying piston 2 divides the interior into an oil space 3 and a gas space 4. With a wheelset pump 5, which receives its drive from an axle of the vehicle when it is moving, an oil flow is passed from a pressureless oil tank 6 through a pipeline 7 via a branch 7a with a check valve 8 into the oil space 3 of the pressure accumulator 1 . The piston 2 is pressed against the gas space 4 and the gas which is under prestress is compressed therein. Energy is extracted from the locomotion of the vehicle and converted into pressure energy, which is stored in the gas space 4 of the pressure accumulator 1 . Another pipeline 9 leads from the oil chamber 3 via a check valve 10 to the hydraulic system (not shown in the drawing) for opening and closing the unloading device of the vehicle.

Die Ladeölstrom-Rohrleitung 7 führt an dem Druckspeicher 1 vorbei durch ein an der gasraumseitigen Stirnwand des Druckspeichers 1 befindliches Ventil 11, das während des Entladevorganges den Durchfluß sperrt. Wenn der vorgesehene Ladedruck im Gasraum 4 erreicht ist, wird durch einen aus dem Gasraum 4 herausführenden Stößel 12 das Ventil 11 geöffnet. Der Ölstrom kann nun drucklos an dem Druckspeicher 1 vorbei zum Öltank 6 durch die Rücklauf-Rohrleitung 7b fließen.The charging oil flow pipeline 7 leads past the pressure accumulator 1 through a valve 11 located on the gas chamber end wall of the pressure accumulator 1 , which blocks the flow during the unloading process. When the intended boost pressure in the gas space 4 is reached, the valve 11 is opened by a plunger 12 leading out of the gas space 4 . The oil flow can now flow without pressure past the pressure accumulator 1 to the oil tank 6 through the return pipe 7b .

Erfindungsgemäß ist in der Rücklauf-Rohrleitung 7b zwischen dem Ventil 11 am Druckspeicher 1 und dem Öltank 6 ein Hydraulikmotor 13 eingeschlossen, der mit einem Elektrogenerator 14 kraftschlüssig verbindbar ist. Der von diesem erzeugte Strom wird in einem angeschlossenen Stromspeicher 15 gespeichert, aus dem in der Zeichnung nicht dargestellte Mittel zur Betätigung der Ventile eines Steuerzylindertriebes der Entladeeinrichtung gespeist werden können.
Der Stromspeicher 15 ist mit einer an sich bekannten Überladeschutz-Einrichtung ausgestattet, die nach vollendeter Aufladung den Stromgenerator 14 außer Kraft setzt. Danach läuft dieser an dem Hydraulikmotor 13 ohne Last in dem Rücklauf-Ölstrom mit, der nun drucklos in den Öltank 6 fließt.According to the invention, a hydraulic motor 13 is enclosed in the return pipeline 7b between the valve 11 on the pressure accumulator 1 and the oil tank 6 and can be non-positively connected to an electric generator 14 . The current generated by this is stored in a connected power store 15 , from which means (not shown in the drawing) for actuating the valves of a control cylinder drive of the discharge device can be fed.
The power store 15 is equipped with a known overcharge protection device which overrides the power generator 14 after charging is complete. Then this runs on the hydraulic motor 13 with no load in the return oil flow, which now flows without pressure into the oil tank 6 .

An den Stromspeicher 15 ist ein in der Zeichnung nicht dargestellter Funkempfänger angeschlossen, der über eine an sich bekannte Fernbedienung Funksignale zur Steuerung der Fahrzeug-Entladeeinrichtung empfangen kann. Damit ist es nicht mehr erforderlich, daß bei jedem Entladevorgang eine Bedienungsperson an dem Fahrzeug tätig werden muß. Das Öffnen und Schließen der Entladeeinrichtung kann über Funk-Fernbedienung von optimalem Standort aus von einer Bedienungsperson gefahrlos und ohne nennenswerten Kraftaufwand oder durch Passieren von Signalgebern am Weg des Fahrzeuges gesteuert werden .A radio receiver (not shown in the drawing) is connected to the power store 15 and can receive radio signals for controlling the vehicle unloading device via a remote control known per se. It is therefore no longer necessary for an operator to have to work on the vehicle with each unloading operation. An operator can control the opening and closing of the unloading device by radio remote control from an optimal location safely and without significant effort or by passing signaling devices on the way of the vehicle.

Aus der Anordnung des Hydraulikmotors 13 in der Rücklauf-Rohrleitung 7b ergibt sich, daß der Hydraulikmotor 13 erst nach vollendeter Aufladung des Druckspeichers 1 von der Radsatzpumpe 5 mit Energie für den Antrieb des Stromgenerators 14 zu versorgen ist. Die die Radsatzpumpe 5 antreibende Energie wird also niemals gleichzeitig, sondern stets nacheinander für das Aufladen des Druckspeichers 1 und den Antrieb des Stromgenerators 14 über den Hydraulikmotor 13 beansprucht. Damit wird das Aufladen beider Speicher auf eine längere Fahrstrecke verteilt und einer Überlastung der den Zug bewegenden Lokomotive entgegengewirkt. The arrangement of the hydraulic motor 13 in the return pipe 7b shows that the hydraulic motor 13 can only be supplied with energy for driving the power generator 14 after the pressure accumulator 1 has been fully charged by the wheel set pump 5 . The energy that drives the wheel set pump 5 is therefore never used simultaneously, but always in succession for charging the pressure accumulator 1 and driving the power generator 14 via the hydraulic motor 13 . In this way, the charging of both storage tanks is spread over a longer route and counteracts overloading of the locomotive moving the train.

BezugszeichenlisteReference list

11
ZylinderdruckspeicherCylinder pressure accumulator
22nd
fliegender Kolbenflying piston
33rd
ÖlraumOil room
44th
GasraumGas space
55
RadsatzpumpeWheelset pump
66
ÖltankOil tank
77
RohrleitungPipeline
7a7a
AbzweigBranch
7b7b
Rücklauf-RohrleitungReturn pipe
88th
Rückschlagventilcheck valve
99
weitere Rohrleitungfurther pipeline
1010th
Rückschlagventilcheck valve
1111
VentilValve
1212th
StößelPestle
1313
HydraulikmotorHydraulic motor
1414
ElektrogeneratorElectric generator
1515
StromspeicherElectricity storage

Claims (4)

  1. Device for extracting, converting and storing energy on an unpowered vehicle, in particular on a railway waggon for bulk goods, comprising discharging means which are operable by a work cylinder drive governed via at least one control cylinder drive and which include a hydraulic pressure accumulator (1) that is chargeable via a wheelset pump (5) coupled to a vehicle axle and that has charging oil flow cut-off means, the oil flow being dischargeable after charging of the pressure accumulator (1) into an oil tank (7) through a return pipe (7b) which bypasses said accumulator, wherein a hydraulic motor (13) having an electrogenerator (14) powered thereby is interposed in the line for the oil flow generated by said wheelset pump (5) in such manner that the hydraulic motor (13) with the electrogenerator (14) is inserted in the return pipe (7b) between a valve (11) of the charging oil flow cut-off means and the oil tank (6), said valve (11) being arranged at a gas-volume-sided front end of the pressure accumulator (1).
  2. Device according to claim 1, wherein a storage battery (15) is electrically connectable to the electrogenerator (14) for current supply to activating means for a control cylinder drive of the vehicle discharging means.
  3. Device according to claim 2, wherein an overcharge protection means known per se is provided at the storage battery (15) for cutting off the electrogenerator (14) upon completion of charging.
  4. Device according to claim 2 or claim 3, wherein a radio receiver is connected to the storage battery (14).
EP97111706A 1997-07-10 1997-07-10 Device for extracting,converting and storing energy on an unpowered vehicle Expired - Lifetime EP0890746B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59704604T DE59704604D1 (en) 1997-07-10 1997-07-10 Device for absorbing, converting and storing energy on a vehicle without its own downforce
EP97111706A EP0890746B1 (en) 1997-07-10 1997-07-10 Device for extracting,converting and storing energy on an unpowered vehicle
AT97111706T ATE205582T1 (en) 1997-07-10 1997-07-10 DEVICE FOR RECEIVING, CONVERTING AND STORING ENERGY ON A VEHICLE WITHOUT ITS OWN POWER DRIVE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97111706A EP0890746B1 (en) 1997-07-10 1997-07-10 Device for extracting,converting and storing energy on an unpowered vehicle

Publications (2)

Publication Number Publication Date
EP0890746A1 EP0890746A1 (en) 1999-01-13
EP0890746B1 true EP0890746B1 (en) 2001-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97111706A Expired - Lifetime EP0890746B1 (en) 1997-07-10 1997-07-10 Device for extracting,converting and storing energy on an unpowered vehicle

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EP (1) EP0890746B1 (en)
AT (1) ATE205582T1 (en)
DE (1) DE59704604D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2929219A1 (en) * 2008-03-25 2009-10-02 Sncf HYDRAULIC CIRCUIT FOR WAGON, IN PARTICULAR A BALLASTIERE
FR2998852B1 (en) * 2012-12-05 2014-12-05 Hydro3M REMOVABLE TOOLS FOR WAGONS INTENDED FOR BALLAST REMOVAL ON RAILWAYS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910013A (en) * 1957-01-09 1959-10-27 American Brake Shoe Co Hydraulic generator drive
US4377975A (en) * 1981-05-18 1983-03-29 Scott John P Axle mounted alternator for railroad cars
FR2592849B1 (en) * 1986-01-15 1988-05-27 Leduc Rene Hydro Sa RAILWAY WAGON AXLE WITH COAXIAL HYDRAULIC PUMP
DE9113007U1 (en) * 1991-10-19 1991-12-19 Bolenz & Schaefer Maschinenfabrik Gmbh, 3560 Biedenkopf, De
DE4202792C2 (en) * 1992-01-31 1994-06-30 Montan Hydraulik Gmbh & Co Kg Control for a working cylinder that can be locked on both sides and locked in one end position
JPH05288201A (en) * 1992-04-06 1993-11-02 Kayaba Ind Co Ltd Structure for accumulating pressure
FR2701937B1 (en) * 1993-02-26 1995-06-09 Ctc AUTOMATIC INSTALLATION FOR UNLOADING AND / OR LOADING CEREAL PRODUCTS.

Also Published As

Publication number Publication date
ATE205582T1 (en) 2001-09-15
DE59704604D1 (en) 2001-10-18
EP0890746A1 (en) 1999-01-13

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