AT387U1 - HYDRAULICALLY EXTENDABLE AND REMOVABLE SUPPORT FOR A LOAD VEHICLE PROVIDED WITH A LOADING CRANE - Google Patents
HYDRAULICALLY EXTENDABLE AND REMOVABLE SUPPORT FOR A LOAD VEHICLE PROVIDED WITH A LOADING CRANE Download PDFInfo
- Publication number
- AT387U1 AT387U1 AT15694U AT15694U AT387U1 AT 387 U1 AT387 U1 AT 387U1 AT 15694 U AT15694 U AT 15694U AT 15694 U AT15694 U AT 15694U AT 387 U1 AT387 U1 AT 387U1
- Authority
- AT
- Austria
- Prior art keywords
- inner tube
- piston
- tube
- hydraulic fluid
- loading crane
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Description
AT 000 387 UlAT 000 387 Ul
Die Erfindung bezieht sich auf eine hydraulisch aus-und einfahrbare Stütze für ein mit einem Ladekran versehenes Lastfahrzeug, mit einem feststehenden Außenrohr und einem darin verschiebbaren, einen Kolben tragenden Innenrohr.The invention relates to a hydraulically extendable and retractable support for a truck equipped with a loading crane, with a fixed outer tube and an inner tube that can be displaced therein and carries a piston.
Bei einer bekannten derartigen Einrichtung erfolgt die Zufuhr der Hydraulikflüssigkeit einerseits am oberen Ende, andererseits (zum Einfahren der Stütze) am unteren Ende des Außenrohres. Die zum unteren Ende des Außenrohres führende Leitung verläuft an der Außenseite desselben und stellt einen störenden Vorsprung gegenüber dessen zylindrischer Oberfläche dar.In a known device of this type, the hydraulic fluid is supplied on the one hand at the upper end and on the other hand (for retracting the support) at the lower end of the outer tube. The line leading to the lower end of the outer tube runs on the outside thereof and represents a disruptive projection over its cylindrical surface.
Die Erfindung vermeidet diesen Nachteil dadurch, daß der Raum zwischen Außenrohr und Innenrohr mit einer Zu-und Ableitung für die Hydraulikflüssigkeit über eine Öffnung im Innenrohr und ein feststehendes, den Kolben durchdringendes Versorgungsrohr in Verbindung steht.The invention avoids this disadvantage in that the space between the outer tube and the inner tube is connected to an inlet and outlet for the hydraulic fluid via an opening in the inner tube and a stationary supply tube penetrating the piston.
Das Versorgungsrohr, welches erfindungsgemäß durch den Kolben ins Innenrohr geführt ist, leitet die Hydraulikflüssigkeit so weit nach unten, wie dies die bisher an der Außenseite des Außenrohres vorgesehene Leitung getan hat. Entscheidend dabei ist, daß die Mündung des Versorgungsrohres immer unterhalb des Kolbens angeordnet sein muß, da der Zweck der Leitung die Rückführung der Stütze in den Ausgangszustand, also die Beaufschlagung der Kolbenunterseite ist. Während bei bekannten Einrichtungen die außen geführte Versorgungsleitung direkt in den Raum zwischen Außenrohr und Innenrohr mündet, muß gemäß der Erfindung die Hydraulikflüssigkeit noch aus dem Inneren des Innen- 2 AT 000 387 Ul rohres in den Zwischenraum von Außenrohr und Innenrohr gelangen, wozu die erwähnte Öffnung im Innenrohr dient.The supply pipe, which according to the invention is guided through the piston into the inner pipe, conducts the hydraulic fluid downward as far as the pipe previously provided on the outside of the outer pipe has done. It is crucial here that the mouth of the supply pipe must always be arranged below the piston, since the purpose of the line is to return the support to the initial state, that is to say to act on the underside of the piston. While in known devices the outside supply line leads directly into the space between the outer tube and the inner tube, according to the invention the hydraulic fluid must still get from the inside of the inner tube into the space between the outer tube and the inner tube, to which the opening mentioned serves in the inner tube.
Um sicherzustellen, daß die ausgefahrene Stütze nicht unbeabsichtigt in die unwirksame Stellung zurückkehrt, wird vorzugsweise vorgesehen, daß dem Versorgungsrohr ein hydraulisch gesteuertes Rückschlagventil vorgeschaltet ist, welches sich öffnet, wenn der Oberseite des Kolbens über eine Leitung unter Druck stehende Hydraulikflüssigkeit zugeführt wird.In order to ensure that the extended support does not unintentionally return to the inactive position, it is preferably provided that the supply pipe is preceded by a hydraulically controlled check valve which opens when hydraulic fluid under pressure is supplied to the top of the piston via a line.
Weitere Einzelheiten der Erfindung werden anschließend anhand der Zeichnung erläutert. In dieser istFurther details of the invention are subsequently explained with reference to the drawing. In this is
Fig. 1 ein Schaltplan, Fig. 2 und 3 ein Ausführungsbeispiel für die konstruktive Ausgestaltung der Stütze, wobei Fig. 2 einen Längsschnitt, Fig. 3 eine Draufsicht darstellt.Fig. 1 is a circuit diagram, Fig. 2 and 3, an embodiment for the structural design of the support, Fig. 2 is a longitudinal section, Fig. 3 is a plan view.
Wesentliche Teile der erfindungsgemäßen Stütze sind ein feststehendes Außenrohr 1 und darin verschiebbar gelagertes Innenrohr 2, welches mit einem Kolben 3 fest verbunden ist. Das Ausfahren der Stütze wird bewirkt, indem über die Leitung 7 unter Druck Hydraulikflüssigkeit in den Raum 8 eingeführt wird. Da sich mit Vergrößerung des Raumes 8 der Zwischenraum 11 zwischen Innenrohr 2 und Außenrohr 1 verkleinert, muß aus diesem Zwischenraum 11 gleichzeitig Hydraulikflüssigkeit abströmen. Dies geschieht über die Öffnung 4 im Innenrohr 2 und das Versorgungsrohr 5 bzw. die Leitung 9.Essential parts of the support according to the invention are a fixed outer tube 1 and inner tube 2 slidably mounted therein, which is firmly connected to a piston 3. The support is extended by introducing hydraulic fluid into the space 8 via the line 7 under pressure. Since the space 11 between the inner tube 2 and outer tube 1 becomes smaller as the space 8 increases, hydraulic fluid must flow out of this space 11 at the same time. This takes place via the opening 4 in the inner tube 2 and the supply tube 5 or the line 9.
Das Einziehen des Innenrohres 2 in das Außenrohr 1, also eine Verkleinerung des Raumes 8, ist nur möglich, wenn die Leitung 9 unter Druck steht. Nur dann ist nämlich das druckgesteuerte Rückschlagventil 6 geöffnet und ein Abfließen der Hydraulikflüssigkeit aus dem Raum 3 AT 000 387 Ul 8 über die Leitung 7 möglich. Gleichzeitig wird natürlich der Zwischenraum 11 über die durch die Leitung 9, die Versorgungsleitung 5 und die Öffnung 4 zuströmende Hydraulikflüssigkeit vergrößert.The pulling in of the inner tube 2 into the outer tube 1, that is to say a reduction in the size of the space 8, is only possible when the line 9 is under pressure. Only then is the pressure-controlled check valve 6 opened and can the hydraulic fluid flow out of the room 3 AT 000 387 Ul 8 via the line 7. At the same time, of course, the intermediate space 11 is enlarged via the hydraulic fluid flowing through the line 9, the supply line 5 and the opening 4.
Die konstruktive Ausgestaltung der beschriebenen Elemente ergibt sich aus Fig. 2 und 3. Auf die Bedeutung der einzelnen Bezugszeichen muß hiebei nicht näher eingegangen werden, da mit Ausnahme der Dichtringhalterung 10 zwischen Außenrohr 1 und Innenrohr 2 bereits alle Konstruktionselemente anhand von Fig. 1 diskutiert worden sind. 4The structural design of the elements described results from FIGS. 2 and 3. The meaning of the individual reference numerals need not be discussed in more detail here, since with the exception of the sealing ring holder 10 between the outer tube 1 and inner tube 2, all structural elements have already been discussed with reference to FIG. 1 are. 4th
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT15694U AT387U1 (en) | 1994-07-01 | 1994-07-01 | HYDRAULICALLY EXTENDABLE AND REMOVABLE SUPPORT FOR A LOAD VEHICLE PROVIDED WITH A LOADING CRANE |
| EP95109898A EP0693454A1 (en) | 1994-07-01 | 1995-06-24 | Support being moved in and out hydraulically for a commercial vehicle with loading crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT15694U AT387U1 (en) | 1994-07-01 | 1994-07-01 | HYDRAULICALLY EXTENDABLE AND REMOVABLE SUPPORT FOR A LOAD VEHICLE PROVIDED WITH A LOADING CRANE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT387U1 true AT387U1 (en) | 1995-09-25 |
Family
ID=3483036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT15694U AT387U1 (en) | 1994-07-01 | 1994-07-01 | HYDRAULICALLY EXTENDABLE AND REMOVABLE SUPPORT FOR A LOAD VEHICLE PROVIDED WITH A LOADING CRANE |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0693454A1 (en) |
| AT (1) | AT387U1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2137078A1 (en) * | 1971-07-24 | 1973-02-01 | Ver Flugtechnische Werke | HYDRAULIC SUPPORT OR CONTROL ORGAN |
| DE2829631A1 (en) * | 1978-07-06 | 1980-01-17 | Wibau Gmbh | SUPPORT DEVICE, CONSISTING OF A SUPPORT ARM AND A HYDRAULICALLY LENGTH-ADJUSTABLE PIPE FOOT CONNECTED TO IT, IN PARTICULAR, IN ASSIGNMENT WITH AN EXTENSION, e.g. DISTRIBUTION POLES, EQUIPPED CONSTRUCTION MACHINES, LIKE CONCRETE PUMPS OR THE LIKE. |
| DE2253755B2 (en) * | 1971-11-02 | 1980-05-14 | Unic Corp., Tokio | Device for automatic horizontal alignment of a carrier vehicle for a crane or the like |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7806499U1 (en) * | 1978-03-03 | 1978-10-12 | Applied Power Inc., Milwaukee, Wis. (V.St.A.) | VEHICLE, ESPECIALLY CARAVANS |
| DE7820253U1 (en) * | 1978-07-06 | 1982-01-14 | Wibau Industrie und Verwaltung GmbH, 6466 Gründau | SUPPORT DEVICE, CONSISTING OF A SUPPORT ARM AND A HYDRAULICALLY LENGTH-ADJUSTABLE PIPE FOOT CONNECTED TO IT, IN PARTICULAR, IN ASSIGNMENT WITH AN EXTENSION, e.g. DISTRIBUTION POLES, EQUIPPED CONSTRUCTION MACHINES, LIKE CONCRETE PUMPS OR THE LIKE. |
| EP0070144A1 (en) * | 1981-07-07 | 1983-01-19 | Onar Hydraulic Limited | Landing legs for vehicle semi-trailer |
| EP0097739B1 (en) * | 1982-06-30 | 1986-06-18 | Hydro-Gerätebau GmbH & Co. KG Hebezeuge | Hydraulic support arrangements |
| DE3603593A1 (en) * | 1986-02-06 | 1987-08-20 | Delmag Maschinenfabrik | Supporting foot for vehicles |
-
1994
- 1994-07-01 AT AT15694U patent/AT387U1/en not_active IP Right Cessation
-
1995
- 1995-06-24 EP EP95109898A patent/EP0693454A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2137078A1 (en) * | 1971-07-24 | 1973-02-01 | Ver Flugtechnische Werke | HYDRAULIC SUPPORT OR CONTROL ORGAN |
| DE2253755B2 (en) * | 1971-11-02 | 1980-05-14 | Unic Corp., Tokio | Device for automatic horizontal alignment of a carrier vehicle for a crane or the like |
| DE2829631A1 (en) * | 1978-07-06 | 1980-01-17 | Wibau Gmbh | SUPPORT DEVICE, CONSISTING OF A SUPPORT ARM AND A HYDRAULICALLY LENGTH-ADJUSTABLE PIPE FOOT CONNECTED TO IT, IN PARTICULAR, IN ASSIGNMENT WITH AN EXTENSION, e.g. DISTRIBUTION POLES, EQUIPPED CONSTRUCTION MACHINES, LIKE CONCRETE PUMPS OR THE LIKE. |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0693454A1 (en) | 1996-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MN9K | Cancelled due to lapse of time |