EP1728759A3 - Device for determining the lifting height of a load lifting means of an industrial truck - Google Patents
Device for determining the lifting height of a load lifting means of an industrial truck Download PDFInfo
- Publication number
- EP1728759A3 EP1728759A3 EP06010638A EP06010638A EP1728759A3 EP 1728759 A3 EP1728759 A3 EP 1728759A3 EP 06010638 A EP06010638 A EP 06010638A EP 06010638 A EP06010638 A EP 06010638A EP 1728759 A3 EP1728759 A3 EP 1728759A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- load
- lifting
- determining
- height
- industrial truck
- 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.)
- Granted
Links
- 238000011156 evaluation Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
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
- B66F9/24—Electrical devices or systems
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2838—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT with out using position sensors, e.g. by volume flow measurement or pump speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
Vorrichtung zur Bestimmung der Hubhöhe eines Lasttragmittels an einem Flurförderzeug, das mit Hilfe mindestens eines Freihub- (10) und mindestens eines Lasthubzylinders (12) an einem Hubgerüst angehoben oder abgesenkt werden kann, wobei in der Leitung (14) zwischen einer Hydraulikpumpe (16) und dem Freihubzylinder (10) ein Durchflußmengenmesser (16) angeordnet ist, und eine mit dem Durchflußmengenmesser (16) verbundene Auswerteeinheit (18) vorgesehen ist, die aus dem Meßsignal des Durchflußmengenmessers (16) die jeweilige Hubhöhe berechnet und eine Erfassungsvorrichtung (22) vorgesehen ist, die das Ende der Freihubbewegung bzw. den Anfang der Bewegung des Lasthubzylinders erfaßt und ein Signal auf die Auswerteeinheit (18) gibt zur Anwendung eines geänderten Faktors auf die Berechnung der Hubhöhe. Apparatus for determining the lifting height of a load-bearing means on an industrial truck which can be raised or lowered by means of at least one free-lift (10) and at least one load-lifting cylinder (12) on a mast, wherein in the conduit (14) between a hydraulic pump (16) and the Freihubzylinder (10) a flow meter (16) is arranged, and an evaluation unit (18) connected to the Durchflußmengenmesser (16) is provided which calculates the respective stroke height from the measured signal of the flow meter (16) and a detection device (22) is, which detects the end of Freihubbewegung or the beginning of the movement of the load lifting cylinder and a signal to the evaluation unit (18) are for applying a changed factor on the calculation of the lifting height.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510025507 DE102005025507A1 (en) | 2005-06-03 | 2005-06-03 | Device for determining the lifting height of a load carrier on an industrial truck |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1728759A2 EP1728759A2 (en) | 2006-12-06 |
EP1728759A3 true EP1728759A3 (en) | 2008-01-23 |
EP1728759B1 EP1728759B1 (en) | 2009-09-02 |
Family
ID=36940371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060010638 Active EP1728759B1 (en) | 2005-06-03 | 2006-05-24 | Industrial truck with a device for determining the lifting height of a load lifting means of the industrial truck |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1728759B1 (en) |
DE (2) | DE102005025507A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5353371B2 (en) † | 2008-05-26 | 2013-11-27 | 株式会社豊田自動織機 | Multistage mast type forklift load measuring device |
FR2975089B1 (en) * | 2011-05-10 | 2013-04-26 | Manitou Bf | TELESCOPIC HANDLING ARRAY MEASURING DEVICE |
EP3194324B1 (en) | 2014-09-15 | 2024-11-06 | Crown Equipment Corporation | Lift truck with optical load sensing structure |
DE102021110349A1 (en) | 2021-04-22 | 2022-10-27 | Franz Xaver Meiller Fahrzeug- Und Maschinenfabrik - Gmbh & Co Kg | Hydraulic system for a working machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4220333A1 (en) * | 1992-06-22 | 1993-12-23 | Marco Systemanalyse Entw | Measuring piston displacement in hydraulic working cylinder - determining flow of hydraulic medium through cylinder from pressure difference measurement across choke |
DE4306680A1 (en) * | 1993-03-04 | 1994-09-08 | Jungheinrich Ag | Method of determining the lifting height of a vertically adjustable load-suspension means of an industrial truck |
DE19508346C1 (en) * | 1995-03-09 | 1996-06-20 | Jungheinrich Ag | Height detection system for fork lift truck lifting forks |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10259037A1 (en) * | 2002-12-17 | 2004-07-08 | Still Gmbh | Lifting-height measuring device for warehouse truck, has flexible tube filled with fluid and attached to liftable component of truck, and connected to pressure sensor |
DE202004017625U1 (en) * | 2004-11-12 | 2005-02-10 | Ziegler, Gerhard | Mobile 'cherry picker' work platform has load sensor attached to hydraulic lift cylinder |
-
2005
- 2005-06-03 DE DE200510025507 patent/DE102005025507A1/en not_active Withdrawn
-
2006
- 2006-05-24 DE DE200650004707 patent/DE502006004707D1/en active Active
- 2006-05-24 EP EP20060010638 patent/EP1728759B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4220333A1 (en) * | 1992-06-22 | 1993-12-23 | Marco Systemanalyse Entw | Measuring piston displacement in hydraulic working cylinder - determining flow of hydraulic medium through cylinder from pressure difference measurement across choke |
DE4306680A1 (en) * | 1993-03-04 | 1994-09-08 | Jungheinrich Ag | Method of determining the lifting height of a vertically adjustable load-suspension means of an industrial truck |
DE19508346C1 (en) * | 1995-03-09 | 1996-06-20 | Jungheinrich Ag | Height detection system for fork lift truck lifting forks |
Also Published As
Publication number | Publication date |
---|---|
DE502006004707D1 (en) | 2009-10-15 |
DE102005025507A1 (en) | 2006-12-07 |
EP1728759A2 (en) | 2006-12-06 |
EP1728759B1 (en) | 2009-09-02 |
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