DE1006732B - Hydraulic drive for industrial trucks - Google Patents
Hydraulic drive for industrial trucksInfo
- Publication number
- DE1006732B DE1006732B DEI11081A DEI0011081A DE1006732B DE 1006732 B DE1006732 B DE 1006732B DE I11081 A DEI11081 A DE I11081A DE I0011081 A DEI0011081 A DE I0011081A DE 1006732 B DE1006732 B DE 1006732B
- Authority
- DE
- Germany
- Prior art keywords
- pump
- control
- linkage
- lever
- hydraulic
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
DEUTSCHESGERMAN
Die Erfindung bezieht sich auf den hydraulischen Antrieb von Flurfördergeräten mit einer Brennkraftmaschine als Energiequelle für mehrere Pumpen, welche die Flüssigkeitsmotoren für das Fahrwerk und die Zusatzeinrichtungen, wie z. B. das Hubwerk, über einen Speicher mit Druckflüssigkeit versorgen.The invention relates to the hydraulic drive of floor conveyors with an internal combustion engine as an energy source for several pumps, which the liquid motors for the landing gear and the additional devices, such as B. supply the hoist via a memory with hydraulic fluid.
Bei den seither bekannten Flurfördergeräten wird in der Regel das Fahrwerk mechanisch unter Zwischenschaltung von Kupplung, Getriebe und Differential durch die Brennkraftmaschine angetrieben. Die Hubeinrichtung dagegen wird hydraulisch bewegt, wobei nicht nur das Heben und Senken des Lastschlittens, sondern auch die Schwenkbewegung des Hubmastes und die Betätigung der Hilfsgeräte in die Hydraulik mit einbezogen sind. Meist ist eine vom Motor angetriebene Zentralpumpe vorhanden, die unmittelbar in die Bewegungszylinder der verschiedenen Einrichtungen fördert. Diese Pumpe muß daher so bemessen sein, daß die geforderten Bewegungszeiten der hydraulischen Einrichtungen eingehalten werden; in den Leerzeiten fließt die Pumpenförderung drucklos in den Behälter zurück, während für den raschen Einsatz eine Überbemessung der Pumpe erforderlich ist. Es sind auch Flurfördergeräte bekannt, bei welchen in die Kraftübertragung vom Motor zum Fahrwerk ein hydraulisches Zwischenglied, z. B. ein Drehmomentenwandler, eingeschaltet ist. Dieser Wandler sorgt einmal für eine elastische und schwingungsdämpfende Übertragung des Motordrehmoments auf das Fahrwerk, das im übrigen ganz normal mit einem Differential ausgerüstet ist. Der weitere Sinn für die Zwischenschaltung eines nach dem hydrodynamischen Prinzip arbeitenden Wandlers ist der, das Stufengetriebe wegzulassen und eine stufenlose Schaltung für das Fahrwerk zu erreichen. Eine Verbindung zwischen der hydraulischen Einrichtung für das Hubwerk und dem Drehmomenten wandler für das Fahrwerk besteht im übrigen nicht. Es sind also bei den bekannten Flurfördergeräten eine große Anzahl von verschiedenartig arbeitenden Elementen für die Antriebe eingebaut, die z. B. bei Reparaturarbeiten Kenntnisse auf den verschiedensten Gebieten verlangen. In the floor conveyors known since then, the chassis is usually mechanically interposed driven by the clutch, gearbox and differential by the internal combustion engine. the Lifting device, on the other hand, is moved hydraulically, whereby not only the lifting and lowering of the load carriage, but also the pivoting movement of the mast and the operation of the auxiliary equipment in the Hydraulics are included. Usually there is a central pump driven by the engine, which directly promotes in the movement cylinders of the various facilities. This pump must therefore be measured so that the required movement times of the hydraulic devices are observed; During idle times, the pump delivery flows back into the tank without pressure, while for the rapid one Overdimensioning of the pump is required. There are also known floor conveyors in which in the power transmission from the engine to the chassis a hydraulic intermediate member, z. B. a torque converter, is switched on. This converter ensures an elastic and vibration-damping Transmission of the engine torque to the chassis, which, by the way, is completely normal with a Differential is equipped. The wider sense of the interposition of one after the hydrodynamic The principle of the converter is to omit the stepped transmission and a stepless gearshift for the landing gear to reach. A connection between the hydraulic equipment for the hoist and the torque converter for the chassis does not exist in the rest. So it is with the known floor conveyors a large number of differently working elements for the drives installed, the z. B. in repair work require knowledge in a wide variety of areas.
Weiter sind Spezialfahrzeuge, wie z. B. Straßenreinigungsmaschinen,
bekannt, welche mit vollhydraulischem Antrieb ausgerüstet sind. Hier werden von einer Brennkraftmaschine ebenfalls mehrere Pumpen
angetrieben, und es sind ein Wasser- und ein Ölbehälter vorgesehen. Ein Speicher für das Drucköl mit
Druckluftbelastung zur Erreichung einer schnelleren Arbeitsweise und zur Energieersparnis durch die
Möglichkeit des Einbaus kleinerer Pumpen ist hier nicht vorgesehen, da die kontinuierliche Arbeitsweise
bei Straßenreinigungsmaschinen eine solche Speiche-Hydraulischer
Antrieb
für FlurfördergeräteNext are special vehicles such. B. Street cleaning machines, known, which are equipped with a fully hydraulic drive. Here, too, several pumps are driven by an internal combustion engine, and a water and an oil container are provided. A reservoir for the pressure oil with compressed air load to achieve a faster mode of operation and to save energy through the possibility of installing smaller pumps is not provided here, since the continuous mode of operation in street cleaning machines is such a spoke hydraulic drive
for material handling equipment
Anmelder:Applicant:
Albert Irion Nachf.,Albert Irion Nachf.,
Hebe- und Fahrgerätebau,Lifting and driving equipment,
Stuttgart-Münster, Nagoldstr. 55Stuttgart-Munster, Nagoldstr. 55
Heinrich Taake, Stuttgart-Zuffenhausen,
ist als Erfinder genannt wordenHeinrich Taake, Stuttgart-Zuffenhausen,
has been named as the inventor
rung gar nicht erfordert oder wirtschaftlich erscheinen läßt.tion is not required at all or makes it appear economical.
Ganz anders liegen dagegen die Verhältnisse bei Flurfördergeräten, wo durch den intermittierenden Hubwerkbetrieb Leerlaufzeiten für die Pumpenförderung entstehen, die zur Speicherung der Pumpenförderung benutzt werden können, um im Bedarfsfalle mit der so gespeicherten Druckflüssigkeit eine höhere Arbeitsgeschwindigkeit zu erreichen, ohne daß deshalb die Pumpe oder die Pumpen in ihrer Förderleistung unnötig groß gehalten werden müßten. Ein weiterer Vorteil ergibt sich durch den Einbau eines Speichers noch dadurch, daß die insbesondere für den Fahrwerksantrieb vorgesehene, als Regel- und Umschaltpumpe ausgebildete Pumpe auch als hydraulischer Motor verwendet werden kann. Die vor dem Stillsetzen der Brennkraftmaschine in den Speicher gepumpte Druckflüssigkeit kann dann zum Anlassen dieser Brennkraftmaschine verwendet werden, wenn die Regel- und Umschaltpumpe über eine Nebenleitung, die an die Speicherdruckleitung zwischen dem Speicher und den Zusatzeinrichtungen vor einem Steuerventil angeschlossen ist, gespeist und als Flüssigkeitsmotor betrieben wird. Damit kann bei selbstzündenden Brennkraftmaschinen jede elektrische Einrichtung entfallen und die von diesen Einrichtungen herrührende Funkengefahr ausgeschaltet werden.On the other hand, the situation is completely different with floor conveyors, where the intermittent Hoist operation Idle times for the pump delivery arise that are used to store the pump delivery can be used to increase the hydraulic fluid stored in this way, if necessary To achieve working speed without therefore affecting the pump or the pumps in their delivery capacity would have to be kept unnecessarily large. Another advantage results from the installation of a Memory still in that the particular intended for the chassis drive, as a control and switching pump trained pump can also be used as a hydraulic motor. The one before Shutting down the internal combustion engine, the hydraulic fluid pumped into the memory can then be used for starting this internal combustion engine can be used if the control and switching pump via a secondary line, to the accumulator pressure line between the accumulator and the additional devices in front of a Control valve is connected, fed and operated as a liquid motor. This can be used for self-igniting Internal combustion engines dispense with any electrical device and those of these devices resulting spark hazard must be switched off.
Selbstverständlich kann im Rahmen der Erfindung an Stelle der als Ölmotor verwendbaren Fahrwerkspumpe auch ein besonderer hydraulischer Anlasser eingebaut werden, der mit der Speicherflüssigkeit des Akkumulators betrieben wird.Of course, in the context of the invention, instead of the running gear pump that can be used as an oil motor a special hydraulic starter can also be installed, which works with the storage fluid of the Accumulator is operated.
609 86W252609 86W252
Claims (4)
Schweizerische Patentschrift Nr. 190 299;
USA.-Patentschrift Nr. 2 530 720.Considered publications:
Swiss Patent No. 190 299;
U.S. Patent No. 2,530,720.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI11081A DE1006732B (en) | 1955-12-24 | 1955-12-24 | Hydraulic drive for industrial trucks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI11081A DE1006732B (en) | 1955-12-24 | 1955-12-24 | Hydraulic drive for industrial trucks |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1006732B true DE1006732B (en) | 1957-04-18 |
Family
ID=7185304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI11081A Pending DE1006732B (en) | 1955-12-24 | 1955-12-24 | Hydraulic drive for industrial trucks |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1006732B (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1084150B (en) * | 1959-02-07 | 1960-06-23 | Teves Kg Alfred | Hydrostatic transmission for motor vehicles |
DE1133986B (en) * | 1958-11-07 | 1962-07-26 | Ready Mixed Concrete Ltd | Hydraulic drive of an accessory device on a motor vehicle with an internal combustion engine |
DE1177554B (en) * | 1959-01-09 | 1964-09-03 | Erik Ten Kate | Lift truck with hydraulic drive and lifting drive |
DE1185120B (en) * | 1960-01-28 | 1965-01-07 | Yale & Towne Inc | Lifting truck with hydraulic drives fed by a pressure medium pump via a pressure accumulator |
DE1188957B (en) * | 1959-09-15 | 1965-03-11 | Lely Nv C Van Der | Control device for a hydrostatic change gearbox for vehicles, especially for tractors |
DE1224622B (en) * | 1964-11-20 | 1966-09-08 | Lucas Industries Ltd | Hydrostatic drive for vehicles |
DE1225555B (en) * | 1961-10-11 | 1966-09-22 | Steinbock G M B H | Forklift with two pumps |
DE1298003B (en) * | 1966-05-03 | 1969-06-19 | Eaton Yale & Towne Gmbh | Actuating device for a hydrostatic vehicle drive |
DE2406611A1 (en) * | 1974-02-12 | 1975-08-14 | Linde Ag | Pedal controlled infinitely variable transmission - with hand operated direction lever to couple pedal to respective linkage |
DE2805049A1 (en) * | 1977-02-07 | 1978-08-10 | Carman Vincent Earl | MOTOR VEHICLE DRIVE SYSTEM |
DE2726246A1 (en) * | 1977-06-10 | 1978-12-14 | Jungheinrich Kg | HYDRAULIC LIFTING DEVICE AND LIFTING FRAMEWORK FOR FORKLIFTS AND SHELVING TRUCKS |
DE2741497A1 (en) * | 1977-09-15 | 1979-03-29 | Jungheinrich Kg | HYDRAULIC LIFTING DEVICE FOR FLOOR CONVEYORS OR SHELVING CONVEYORS AND LIFTING FRAME FOR SUCH A LIFTING DEVICE |
US4227587A (en) * | 1978-10-05 | 1980-10-14 | Vehicle Energy Corporation | Automotive drive system |
DE3345679A1 (en) * | 1983-12-16 | 1985-06-27 | Robert 8152 Feldkirchen-Westerham Hettich | Self propelled vehicle with auxiliary units operated by the engine |
EP0432788A1 (en) * | 1989-12-14 | 1991-06-19 | Korsmeyer Trading Intern.Ltd. | Control system for a combustion engine with a hydrostatic transmission |
EP0634356A1 (en) * | 1993-07-12 | 1995-01-18 | Lafis-Lagertechnik Fischer Gmbh + Co. Kg. | Hand-acuated fork-lift truck |
EP2913514A1 (en) * | 2014-02-03 | 2015-09-02 | Liebherr-Hydraulikbagger GmbH | Mobile hydraulic construction machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH190299A (en) * | 1936-07-04 | 1937-04-15 | Kopp Jean | Control device on motor vehicles. |
US2530720A (en) * | 1944-03-04 | 1950-11-21 | Municipal Supply Company | Hydraulic vehicle drive with individual motors for multiple driven parts |
-
1955
- 1955-12-24 DE DEI11081A patent/DE1006732B/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH190299A (en) * | 1936-07-04 | 1937-04-15 | Kopp Jean | Control device on motor vehicles. |
US2530720A (en) * | 1944-03-04 | 1950-11-21 | Municipal Supply Company | Hydraulic vehicle drive with individual motors for multiple driven parts |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1133986B (en) * | 1958-11-07 | 1962-07-26 | Ready Mixed Concrete Ltd | Hydraulic drive of an accessory device on a motor vehicle with an internal combustion engine |
DE1177554B (en) * | 1959-01-09 | 1964-09-03 | Erik Ten Kate | Lift truck with hydraulic drive and lifting drive |
DE1084150B (en) * | 1959-02-07 | 1960-06-23 | Teves Kg Alfred | Hydrostatic transmission for motor vehicles |
DE1188957B (en) * | 1959-09-15 | 1965-03-11 | Lely Nv C Van Der | Control device for a hydrostatic change gearbox for vehicles, especially for tractors |
DE1185120B (en) * | 1960-01-28 | 1965-01-07 | Yale & Towne Inc | Lifting truck with hydraulic drives fed by a pressure medium pump via a pressure accumulator |
DE1225555B (en) * | 1961-10-11 | 1966-09-22 | Steinbock G M B H | Forklift with two pumps |
DE1224622B (en) * | 1964-11-20 | 1966-09-08 | Lucas Industries Ltd | Hydrostatic drive for vehicles |
DE1298003B (en) * | 1966-05-03 | 1969-06-19 | Eaton Yale & Towne Gmbh | Actuating device for a hydrostatic vehicle drive |
DE2406611A1 (en) * | 1974-02-12 | 1975-08-14 | Linde Ag | Pedal controlled infinitely variable transmission - with hand operated direction lever to couple pedal to respective linkage |
DE2805049A1 (en) * | 1977-02-07 | 1978-08-10 | Carman Vincent Earl | MOTOR VEHICLE DRIVE SYSTEM |
DE2726246A1 (en) * | 1977-06-10 | 1978-12-14 | Jungheinrich Kg | HYDRAULIC LIFTING DEVICE AND LIFTING FRAMEWORK FOR FORKLIFTS AND SHELVING TRUCKS |
DE2741497A1 (en) * | 1977-09-15 | 1979-03-29 | Jungheinrich Kg | HYDRAULIC LIFTING DEVICE FOR FLOOR CONVEYORS OR SHELVING CONVEYORS AND LIFTING FRAME FOR SUCH A LIFTING DEVICE |
US4227587A (en) * | 1978-10-05 | 1980-10-14 | Vehicle Energy Corporation | Automotive drive system |
DE3345679A1 (en) * | 1983-12-16 | 1985-06-27 | Robert 8152 Feldkirchen-Westerham Hettich | Self propelled vehicle with auxiliary units operated by the engine |
EP0432788A1 (en) * | 1989-12-14 | 1991-06-19 | Korsmeyer Trading Intern.Ltd. | Control system for a combustion engine with a hydrostatic transmission |
EP0634356A1 (en) * | 1993-07-12 | 1995-01-18 | Lafis-Lagertechnik Fischer Gmbh + Co. Kg. | Hand-acuated fork-lift truck |
EP2913514A1 (en) * | 2014-02-03 | 2015-09-02 | Liebherr-Hydraulikbagger GmbH | Mobile hydraulic construction machine |
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