DE886718C - Hydraulic lifting device for stacking devices - Google Patents
Hydraulic lifting device for stacking devicesInfo
- Publication number
- DE886718C DE886718C DEST4108A DEST004108A DE886718C DE 886718 C DE886718 C DE 886718C DE ST4108 A DEST4108 A DE ST4108A DE ST004108 A DEST004108 A DE ST004108A DE 886718 C DE886718 C DE 886718C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- pressure
- lifting device
- hydraulic lifting
- stacking devices
- 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
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)
- Fluid-Pressure Circuits (AREA)
Description
Im Patent 874a77 ist eine hydraulische Hubvorrichtung insbesondere für stapelnde Flurfördergeräte, bei welchen mittels mehrerer hydraulischer Pressen ein Hubschlitten gehoben wird, beschrieben, bei der zunächst nur eine hydraulische Presse wirksam wird, solange die zu hebende Last gering ist. Sobald die Hublast größer ist und damit der Druck im Preßzylinder und seiner Zuführleitung steigt, wird durch diesen Druck ein vorbelastetes Ventil geöffnet und gibt den Weg zu einer weiteren Presse frei, so daß nunmehr bei gleichbleibender Fördermenge der Druckluftflüssigkeit der Hubschlitten langsamer, aber mit größter Kraft gehoben wird; da aber durch dieses vorbelastete Ventil unter Umständen eine Drosselwirkung hervorgerufen werden :kann, wurde die Erfindung nach dem Hauptpatent weiter ausgebaut.In the '874a77 patent, a hydraulic lifting device is in particular for stacking industrial trucks, where several hydraulic presses are used a lifting carriage is lifted, described in which initially only a hydraulic Press is effective as long as the load to be lifted is low. As soon as the lifting load is greater and thus the pressure in the press cylinder and its feed line increases, a preloaded valve is opened by this pressure and gives way to a further press free, so that now with a constant flow rate of the compressed air fluid the lifting carriage is lifted more slowly but with the greatest possible force; but because of this preloaded valve may cause a throttling effect: can, the invention was further expanded after the main patent.
Gegenstand der Erfindung ist eine Vorrichtung, bei der die Drosselwirkung des vorbelasteten Ventils unschädlich gemacht wird. Zu diesem Zweck erhält das Ventil q., welches eine Absperrung zwischen der Druckleitung und der Druckpumpe bewirkt, die in Fig. 1 schematisch dargestellte Form.The invention relates to a device in which the throttling effect of the preloaded valve is rendered harmless. To this end, the valve is given q., which causes a shut-off between the pressure line and the pressure pump, the form shown schematically in Fig. 1.
Auf das beispielsweise als Kugel ausgebildete Absperrglied wirkt über einen im Ventilgehäuse 23 druckdicht angeordneten Kolben 21 die Kraft einer Feder 22, deren Spannung vorzugsweise einstellbar ist.On the shut-off member, which is designed as a ball, for example, acts over a piston 21 arranged in a pressure-tight manner in the valve housing 23, the force of a spring 22, the tension of which is preferably adjustable.
Sobald nun der Druck in dem mit .Druckleitung 17 verbundenen Preßzylinder steigt, wird das Ventil q. geöffnet und gibt den Weg zu einer zweiten Presse über die Druckleitung 18 frei, damit steigt auch der Druck im Ventilgehäuse 23 und treibt den Kolben 21 heraus, so daß das Absperrglied des Ventils q. widerstandslos weit geöffnet werden kann, und keine Drosselung .durch die Feder 22 an dieser. Stelle stattfindet.As soon as the pressure in the press cylinder connected to .Druckleitung 17 increases, the valve q. opens and gives way to a second press the pressure line 18 free, so that the pressure in the valve housing 23 rises and drives the piston 21 out, so that the shut-off member of the valve q. far without resistance can be opened, and no throttling .by the spring 22 on this. Job takes place.
Der gleiche Erfolg kann auch durch Anordnung eines Hilfsventils, wie in Fig. 2 dargestellt, erreicht werden. Hier erfolgt der Zutritt der Druckflüssigkeit zu der Druckleitung 18 ganz oder teilweise über ein Ventil 2o, welches durch das Ventil q. druckabhängig gesteuert wird.The same success can also be achieved by arranging an auxiliary valve, such as shown in Fig. 2, can be achieved. This is where the hydraulic fluid comes in to the pressure line 18 wholly or partially via a valve 2o, which through the Valve q. is controlled depending on the pressure.
Bei steigender Belastung des Hubschlittens wird .las belastete Ventil q. geöffnet, und der nun in den Zylinder 15 gelangende Flüssigkeitsdruck wirkt auf ein weiteres belastetes Ventil, beispielsweise einen Kolbenschieber 2o, welches durch den Druck sb weit geöffnet wird, daß die Druckflüssigkeit über die Rohrleitung 19 einen weiteren Weg in den Zylinder 15 findet.As the load on the lifting carriage increases, the valve becomes loaded q. opened, and the fluid pressure now entering the cylinder 15 acts on another loaded valve, for example a piston valve 2o, which is opened wide by the pressure sb that the hydraulic fluid through the pipeline 19 finds another way into the cylinder 15.
Auch die beschriebenen Vorrichtungen' sind bei entsprechend abgestufter Belastung mehrerer Ventile q. für mehr als zwei Zylinder brauchbar.The devices described are also graded accordingly Loading of several valves q. usable for more than two cylinders.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST4108A DE886718C (en) | 1951-11-20 | 1951-11-20 | Hydraulic lifting device for stacking devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST4108A DE886718C (en) | 1951-11-20 | 1951-11-20 | Hydraulic lifting device for stacking devices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE886718C true DE886718C (en) | 1953-08-17 |
Family
ID=7453451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST4108A Expired DE886718C (en) | 1951-11-20 | 1951-11-20 | Hydraulic lifting device for stacking devices |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE886718C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068629B (en) * | 1959-11-05 | |||
DE1095203B (en) * | 1957-03-16 | 1960-12-15 | Yale & Towne Mfg Co | Lift truck with a clamp for rolls or the like. |
DE1247201B (en) * | 1965-01-18 | 1967-08-10 | Eisenhuette Prinz Rudolph Ag | Device for compacting waste materials |
FR2705657A1 (en) * | 1993-05-25 | 1994-12-02 | Linde Ag | Handling cart with means for collecting the load and two lifting cylinders mounted in parallel. |
-
1951
- 1951-11-20 DE DEST4108A patent/DE886718C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068629B (en) * | 1959-11-05 | |||
DE1095203B (en) * | 1957-03-16 | 1960-12-15 | Yale & Towne Mfg Co | Lift truck with a clamp for rolls or the like. |
DE1247201B (en) * | 1965-01-18 | 1967-08-10 | Eisenhuette Prinz Rudolph Ag | Device for compacting waste materials |
FR2705657A1 (en) * | 1993-05-25 | 1994-12-02 | Linde Ag | Handling cart with means for collecting the load and two lifting cylinders mounted in parallel. |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3434033A1 (en) | PNEUMATIC CYLINDER WITH DAMPING MECHANICS AND METHOD FOR DAMPING THE PNEUMATIC CYLINDER | |
DE886718C (en) | Hydraulic lifting device for stacking devices | |
DE3341643A1 (en) | Pilot-controlled pressure relief and control valve | |
DE2226610C3 (en) | Accumulator loading valve | |
DE874277C (en) | Hydraulic lifting device for stacking devices | |
DE2951232A1 (en) | Magnetic valve for high pressure system - uses spring to reinforce action of electromagnet and back-up main compression spring | |
DD153773A5 (en) | CIRCUIT | |
CH649360A5 (en) | HYDRAULICALLY UNLOCKABLE VALVE ARRANGEMENT. | |
DE1200148B (en) | Air compressor for vehicles or the like, especially for air brake systems | |
DE2808376A1 (en) | INDIRECT ACTING LOAD DEPENDENT COMPRESSED AIR BRAKE | |
DE2615627A1 (en) | COMPRESSOR | |
DE635149C (en) | Safety valve device for the compressed air device, in particular a motor vehicle brake | |
DE2423430B2 (en) | CONTROL VALVE FOR COMPRESSED AIR BRAKES, IN PARTICULAR FOR RAIL VEHICLES | |
DE821366C (en) | Device on pressure cylinders, in particular compressed air cylinders for compressed air brakes | |
AT220665B (en) | Control device for generating an average control value from two control pressures for load-dependent control of compressed air brakes | |
DE850722C (en) | Pressure relief valve z. B. for forklifts | |
CH359359A (en) | Press | |
AT202453B (en) | Control device for the working piston of a hydraulic press | |
DE105929C (en) | ||
DE859437C (en) | Hydraulic damping device for pulling devices, especially for pipe and rod pulling trolleys | |
DE1555082A1 (en) | Hydraulically acting double control device for a brake valve with several pneumatic brake circuits | |
DE105903C (en) | ||
DE1214963B (en) | Three-way valve with two locking pieces and pressure medium drive, especially steam-water valve for record presses | |
AT204433B (en) | Compressed air braking device for trailer vehicles | |
AT22679B (en) | Pressure regulating device for air pressure brakes. |