DE102009005009A1 - Mobile machine e.g. battery-electrical operated forklift truck, has brake lever bearing located variably in operating area and standing in mechanical connection with valve that is operated towards pressure drop position - Google Patents
Mobile machine e.g. battery-electrical operated forklift truck, has brake lever bearing located variably in operating area and standing in mechanical connection with valve that is operated towards pressure drop position Download PDFInfo
- Publication number
- DE102009005009A1 DE102009005009A1 DE102009005009A DE102009005009A DE102009005009A1 DE 102009005009 A1 DE102009005009 A1 DE 102009005009A1 DE 102009005009 A DE102009005009 A DE 102009005009A DE 102009005009 A DE102009005009 A DE 102009005009A DE 102009005009 A1 DE102009005009 A1 DE 102009005009A1
- Authority
- DE
- Germany
- Prior art keywords
- brake
- brake lever
- pressure
- valve
- lever bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/22—Brakes applied by springs or weights and released hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
- B60T13/588—Combined or convertible systems both fluid and mechanical assistance or drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Die Erfindung betrifft eine fahrbare Arbeitsmaschine, insbesondere Flurförderzeug, mit mindestens einer Bremse, die als hydraulisch lösbare Federspeicherbremse ausgebildet ist und einen Druckraum aufweist, dem eine elektrisch betätigbare Ventileinrichtung vorgeschaltet ist.The Invention relates to a mobile work machine, in particular industrial truck, with at least one brake acting as hydraulically releasable Spring brake is formed and has a pressure chamber, preceded by an electrically actuated valve device is.
In
der
Kommt es bei fahrender Arbeitsmaschine zu einem Stromausfall, so wird der Druckraum in der Federspeicherbremse abrupt entlastet und das Fahrzeug zwangsgebremst. Hierbei wirkt die größtmögliche Bremsverzögerung auf den Gabelstapler ein. Beim Transportieren einer Last auf der Gabel des Gabelstaplers kann es daher unter ungünstigen Umständen zum Abwurf der Last kommen.comes it becomes a power failure while the machine is moving, so will the pressure chamber in the spring brake abruptly relieved and the Vehicle forcibly slowed down. Hereby the greatest possible effect Braking delay on the forklift. When transporting A load on the fork of the forklift can therefore be unfavorable Circumstances come to the discharge of the load.
Um
dies zu verhindern, ist in der nicht vorveröffentlichten
Erfolgt
bei fahrendem Fahrzeug ein Stromausfall, dann wird somit das Fahrzeug
nicht automatisch zwangsgebremst, denn das Bremsventil befindet
sich nach wie vor in der Druckversorgungsstellung. Vielmehr kann
das Fahrzeug mit den der Betriebsbremse zugeordneten Bremselementen
dosiert abgebremst werden:
In der ebenfalls nicht vorveröffentlichten
In the also not pre-published
Gemäß einer
zweiten Ausführungsform der nicht vorveröffentlichten
In allen genannten Fällen besteht die Möglichkeit, die zum Stillstand gebrachte Arbeitsmaschine auch bei Stromausfall zu arretieren, indem das Bremsventil bzw. das Proportional-Druckbegrenzungsventil mechanisch betätigt und dadurch die Federspeicherbremse geschlossen wird.In all these cases, it is possible to the stalled work machine even in case of power failure to lock by the brake valve or the proportional pressure relief valve mechanically actuated and thereby the spring-loaded brake is closed.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Arbeitsmaschine der eingangs genannten Art zur Verfügung zu stellen, bei dem die stehende Arbeitsmaschine bei Stromausfall auf einfache Weise arretiert werden kann.Of the The present invention is based on the object of a work machine to provide the type mentioned above, at the standing machine in case of power failure in a simple manner can be locked.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass ein Bremshebel vorgesehen ist, der durch Tritt auf ein Bremspedal schwenkbar ist und der ein erstes Bremshebellager sowie ein in Längserstreckung des Bremshebels davon beabstandetes zweites Bremshebellager aufweist, wobei der Bremshebel in einem einer Betriebsbremsfunktion zugeordneten ersten Betätigungsbereich um das erste Bremshebellager und in einem daran anschließenden, einer Feststellbremsfunktion zugeordneten zweiten Betätigungsbereich um das zweite Bremshebellager schwenkbar ist und wobei das erste Bremshebellager bei Betätigung des Bremshebels im zweiten Betätigungsbereich ortsveränderlich ist und derart in mechanischer Wirkverbindung mit der Ventileinrichtung steht, dass die Ventileinrichtung in Richtung einer Druckabbaustellung betätigbar ist.These The object is achieved according to the invention that a brake lever is provided by stepping on a brake pedal is pivotable and the first brake lever bearing and a longitudinal extent the brake lever having second brake lever bearing spaced therefrom, wherein the brake lever is assigned in a service brake function first operating area around the first brake lever bearing and in a subsequent, a parking brake function associated second operating area to the second brake lever bearing is pivotable and wherein the first brake lever bearing when actuated of the brake lever in the second operating range mobile is and in mechanical operative connection with the valve device is that the valve device in the direction of a pressure reduction position is operable.
Der Bremshebel kann dadurch in den zweiten Betätigungsbereich gebracht werden, dass das Bremspedal bis zum Anschlag durchgetreten wird. Hierbei wird die Schwenkachse des Bremshebels vom ersten Bremshebellager zum zweiten Bremshebellager verschoben, wodurch sich die Position des ersten Bremshebellagers verändert. Diese Positionsänderung wird durch eine mechanische Koppelung des ersten Bremshebellagers mit der Ventileinrichtung in eine die Ventileinrichtung betätigende Bewegung umgewandelt.The brake lever can be brought into the second operating area, that the Brake pedal is pushed to the stop. Here, the pivot axis of the brake lever is moved from the first brake lever bearing to the second brake lever bearing, whereby the position of the first brake lever bearing changes. This change in position is converted by a mechanical coupling of the first brake lever bearing with the valve device in a valve device actuating movement.
Trotz der durchgängigen Verwendung des Begriffs „mechanische Wirkverbindung” sei klargestellt, dass auch eine hydraulische Wirkverbindung, wie sie beispielsweise in Form eines hydraulischen Gestänges bekannt ist, unter den Wortsinn des genannten Begriffs fallen soll.In spite of the consistent use of the term "mechanical Wirkverbindung "was clarified that also a hydraulic Operative connection, as for example in the form of a hydraulic linkage is known to fall under the literal meaning of the term.
Gemäß einer vorteilhaften Weiterbildung der Erfindung ist das erste Bremshebellager in einer Linearführung angeordnet. Beim Durchtreten des Bremspedals in den zweiten Betätigungsbereich des Bremshebels hinein wird somit eine Linearbewegung des ersten Bremshebellagers erzeugt, mit deren Hilfe die Ventileinrichtung betätigt werden kann. Diese Ausführung ist besonders dann von Vorteil, wenn die Ventileinrichtung einen Längsschieber aufweist. Gleichwohl ist es grundsätzlich auch möglich, eine Bewegung des ersten Bremshebellagers zu erzeugen, die nicht translatorisch ist.According to one advantageous development of the invention is the first brake lever bearing arranged in a linear guide. When passing through the brake pedal in the second operating range of the brake lever Thus, a linear movement of the first brake lever bearing is generated, by means of which the valve device can be actuated. This embodiment is particularly advantageous when the valve device having a longitudinal slide. Nevertheless, it is basically also possible, a movement of the first brake lever bearing to produce that is not translational.
Das zweite Bremshebellager ist bevorzugt an mindestens einem der Betriebsbremsfunktion zugeordneten Bremszylinder angeordnet.The second brake lever bearing is preferably on at least one of the service brake function associated brake cylinder arranged.
Eine günstige Ausgestaltung der Erfindung sieht vor, dass die Ventileinrichtung eine den Druckraum mit einer Druckversorgungseinrichtung verbindende, elektrisch aktivierbare erste Schaltstellung und eine den Druckraum mit einer Drucksenke verbindende, elektrisch aktivierbare zweite Schaltstellung aufweist sowie eine im stromlosen Zustand wirksame dritte Schaltstellung, in der der Druckraum mit einer Druckhalteeinrichtung oder einer Druckabbaueinrichtung verbunden ist. Es ist auch denkbar, die Ventileinrichtung in mehrere einzelne Ventile aufzuteilen, insbesondere Sitzventile.A favorable embodiment of the invention provides that the Valve means a the pressure chamber with a pressure supply device connecting, electrically activatable first switching position and a the pressure chamber with a pressure sink connecting, electrically activated has second switching position and one in the de-energized state effective third switching position, in which the pressure chamber with a pressure-holding device or a pressure reducing device is connected. It is also conceivable to divide the valve device into several individual valves, in particular Poppet valves.
Weitere Vorteile und Einzelheiten der Erfindung werden anhand der in den schematischen Figuren dargestellten Ausführungsbeispiele näher erläutert. Dabei zeigtFurther Advantages and details of the invention will be apparent from the in the schematic figures illustrated embodiments explained in more detail. It shows
Die
erfindungsgemäße Arbeitsmaschine ist beispielsweise
als batterie-elektrisch betriebener Gabelstapler ausgebildet und
verfügt über zwei Radwellen
An
die hydraulische Leitung
Mittels
der Ventileinrichtung
Es
bedarf somit stets der Einwirkung einer elektrisch erzeugten Stellkraft,
um die Ventileinrichtung
Sind
bei der erfindungsgemäßen Arbeitsmaschine die
Federspeicherbremsen
Alternativ
zum Druckspeicher
Die
Federspeicherbremse
Die
Federspeicherbremsen
Um
das Fahrzeug zum Stillstand zu bringen, betätigt die Bedienperson
in der bekannten Weise das Bremspedal
Um
die Arbeitsmaschine auch bei Stromausfall im Stillstand arretieren
zu können, ist die Ventileinrichtung
Hierbei
ist das Bremspedal
In
einen ersten Betätigungsbereich des Bremshebels H, in dem
dieser um das erste Bremshebellager L1 geschwenkt wird (Position
L1' des ersten Bremshebellagers), sind ausschließlich die Bremszylinder
Um
die stehende Arbeitsmaschine im stromlosen Zustand abschleppen zu
können, ist in einer den Tank
Redundant vorhandene Drucksensoren P ermöglichen während des Betriebs der Arbeitsmaschine Plausibilitätskontrollen, beispielsweise zur korrekten Funktionsweise der Druckversorgungseinrichtung.Redundant existing pressure sensors P allow during the operation of the work machine, plausibility checks, for example, for the correct operation of the pressure supply device.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 10315496 A1 [0002] - DE 10315496 A1 [0002]
- - DE 102007037967 [0004] - DE 102007037967 [0004]
- - DE 102008035359 [0005, 0006] - DE 102008035359 [0005, 0006]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009005009A DE102009005009A1 (en) | 2008-10-23 | 2009-01-17 | Mobile machine e.g. battery-electrical operated forklift truck, has brake lever bearing located variably in operating area and standing in mechanical connection with valve that is operated towards pressure drop position |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008052971 | 2008-10-23 | ||
DE102008052971.0 | 2008-10-23 | ||
DE102009005009A DE102009005009A1 (en) | 2008-10-23 | 2009-01-17 | Mobile machine e.g. battery-electrical operated forklift truck, has brake lever bearing located variably in operating area and standing in mechanical connection with valve that is operated towards pressure drop position |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009005009A1 true DE102009005009A1 (en) | 2010-05-06 |
Family
ID=42063140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009005009A Withdrawn DE102009005009A1 (en) | 2008-10-23 | 2009-01-17 | Mobile machine e.g. battery-electrical operated forklift truck, has brake lever bearing located variably in operating area and standing in mechanical connection with valve that is operated towards pressure drop position |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009005009A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2368778A3 (en) * | 2010-03-10 | 2013-01-23 | Linde Material Handling GmbH | Brake control system of a mobile work machine, in particular industrial truck |
CN103863289A (en) * | 2014-03-28 | 2014-06-18 | 徐州重型机械有限公司 | Air pressure type electronic control parking braking system |
EP3034369A1 (en) * | 2014-12-15 | 2016-06-22 | Linde Material Handling GmbH | Mobile working machine with a braking device |
IT202100012056A1 (en) * | 2021-05-11 | 2022-11-11 | Cnh Ind Italia Spa | OPERATING ASSEMBLY FOR A HYDRAULIC BRAKE |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10315496A1 (en) | 2003-04-04 | 2004-10-21 | Linde Ag | Hydraulic system for a battery-operated industrial truck has two hydraulic pumps, the second pump being used for additional supply to a lifting mechanism |
DE102007037967A1 (en) | 2007-08-11 | 2009-02-12 | Linde Material Handling Gmbh | Utility vehicle e.g. battery-electrical fork-lift truck, has brake valve actuated from reduction position into supplying position and from supplying position into reduction position, by electric impulse |
-
2009
- 2009-01-17 DE DE102009005009A patent/DE102009005009A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10315496A1 (en) | 2003-04-04 | 2004-10-21 | Linde Ag | Hydraulic system for a battery-operated industrial truck has two hydraulic pumps, the second pump being used for additional supply to a lifting mechanism |
DE102007037967A1 (en) | 2007-08-11 | 2009-02-12 | Linde Material Handling Gmbh | Utility vehicle e.g. battery-electrical fork-lift truck, has brake valve actuated from reduction position into supplying position and from supplying position into reduction position, by electric impulse |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2368778A3 (en) * | 2010-03-10 | 2013-01-23 | Linde Material Handling GmbH | Brake control system of a mobile work machine, in particular industrial truck |
CN103863289A (en) * | 2014-03-28 | 2014-06-18 | 徐州重型机械有限公司 | Air pressure type electronic control parking braking system |
EP3034369A1 (en) * | 2014-12-15 | 2016-06-22 | Linde Material Handling GmbH | Mobile working machine with a braking device |
IT202100012056A1 (en) * | 2021-05-11 | 2022-11-11 | Cnh Ind Italia Spa | OPERATING ASSEMBLY FOR A HYDRAULIC BRAKE |
EP4088979A1 (en) * | 2021-05-11 | 2022-11-16 | CNH Industrial Italia S.p.A. | An actuating assembly for a hydraulic brake |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R005 | Application deemed withdrawn due to failure to request examination | ||
R082 | Change of representative |
Representative=s name: PATENTSHIP PATENTANWALTSGESELLSCHAFT MBH, DE |
|
R082 | Change of representative |
Representative=s name: PATENTSHIP PATENTANWALTSGESELLSCHAFT MBH, DE |