EP1733996B1 - Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms - Google Patents

Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms Download PDF

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Publication number
EP1733996B1
EP1733996B1 EP05425426A EP05425426A EP1733996B1 EP 1733996 B1 EP1733996 B1 EP 1733996B1 EP 05425426 A EP05425426 A EP 05425426A EP 05425426 A EP05425426 A EP 05425426A EP 1733996 B1 EP1733996 B1 EP 1733996B1
Authority
EP
European Patent Office
Prior art keywords
chamber
cylinder
fluid
distributor
control valve
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.)
Not-in-force
Application number
EP05425426A
Other languages
English (en)
French (fr)
Other versions
EP1733996A1 (de
Inventor
Andrea Storci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth Oil Control SpA
Original Assignee
Bosch Rexroth Oil Control SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bosch Rexroth Oil Control SpA filed Critical Bosch Rexroth Oil Control SpA
Priority to EP05425426A priority Critical patent/EP1733996B1/de
Priority to AT05425426T priority patent/ATE425118T1/de
Priority to DE602005013196T priority patent/DE602005013196D1/de
Publication of EP1733996A1 publication Critical patent/EP1733996A1/de
Application granted granted Critical
Publication of EP1733996B1 publication Critical patent/EP1733996B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66F9/065—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 non-masted
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2207—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing or compensating oscillations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Claims (4)

  1. Hydraulische Vorrichtung zum Heben und Senken eines Armes (2), angelenkt an ein Arbeitsfahrzeug (20), enthaltend: einen Hydraulikzylinder (3), schwenkbar anzuschliessen an das Fahrzeug (20) und an den Arm (2) und versehen mit einer ersten Kammer (7) und einer zweiten Kammer (8); ein Dreiwege-Ventil (11), welches in einer seiner ersten Position in der Lage ist, die erste Kammer (7) mit einer Flüssigkeitszufuhr und die zweite Kammer (8) mit einem Ablass zu verbinden, und welches in einer zweiten Position in der Lage ist, die zweite Kammer (8) mit der Flüssigkeitszufuhr und die erste Kammer (7) mit dem Ablass zu verbinden, und welches in einer mittleren Position die erste Kammer (7) nicht mit der Flüssigkeitszufuhr verbinden kann; einen hydraulischen Akkumulator (4), angeschlossen an die erste Kammer (7) des Zylinders (3) über ein Trennventil (6), welches Trennventil (6) aktiviert werden kann zwischen einer Konfiguration, in welcher es den Durchlauf der Flüssigkeit zwischen der ersten Kammer (7) und dem hydraulischen Akkumulator (4) erlaubt, und einer Konfiguration, in welcher es den Durchlauf der Flüssigkeit von der ersten Kammer (7) zu dem hydraulischen Akkumulator (4) absperrt; wobei die Vorrichtung dadurch gekennzeichnet ist, dass das Ventil (11) in der mittleren Position das Ablassen der Flüssigkeit aus der zweiten Kammer (8) des Zylinders (3) erlaubt, und dadurch, dass ein zweites Steuerventil (14) zwischen der zweiten Kammer (8) des Zylinders (3) und dem Ventil (11) eingesetzt und dazu vorgesehen ist, ein Strömen der Flüssigkeit von dem Ventil (11) zu der zweiten Kammer (8) des Zylinders (3) zu ermöglichen, während ein Strömen in umgekehrter Weise nur ermöglicht wird, wenn die Drücke im Inneren der ersten Kammer (7) über einem vorgegebenen Wert liegen.
  2. Vorrichtung nach Patentanspruch 1, bei welcher das zweite Steuerventil (14) ein Ausgleichsventil ist, öffnungsgesteuert, um das Strömen der Flüssigkeit aus der zweiten Kammer (8) zu dem Ventil (11) zu erlauben, und zwar mit Hilfe eines Drucksignals, entnommen der ersten Kammer (7) des Zylinders (3).
  3. Vorrichtung nach Patentanspruch 1, bei welcher das zweite Steuerventil (14) ein Zweiwege-Magnetventil ist, welches öffnungsgesteuert ist, um ein Strömen der Flüssigkeit aus der zweiten Kammer (8) zu dem Ventil (11) zu erlauben, und zwar mit Hilfe eines Druckschalters, welcher einen in der ersten Kammer (7) des Zylinders (3) vorhandenen Druck erfasst.
  4. Vorrichtung nach einem beliebigen der vorstehenden Patentansprüche, bei welcher ein erstes Steuerventil (12) zwischen der ersten Kammer (7) des Zylinders (3) und dem Ventil (11) eingesetzt ist, wobei das erste Steuerventil (12) dazu vorgesehen ist, das Strömen der Flüssigkeit von dem Ventil (11) zu der ersten Kammer (7) des Zylinders (3) zu ermöglichen und ein Strömen in umgekehrter Weise wegen Drücken im Inneren der ersten Kammer (7) unter einem vorgegebenen Wert zu verhindern, dadurch gekennzeichnet, dass der Akkumulator (4) an die erste Kammer (7) des Zylinders (3) angeschlossen ist, und zwar an einem mittleren Punkt zwischen dem ersten Steuerventil (12) und der ersten Kammer (7).
EP05425426A 2005-06-15 2005-06-15 Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms Not-in-force EP1733996B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05425426A EP1733996B1 (de) 2005-06-15 2005-06-15 Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms
AT05425426T ATE425118T1 (de) 2005-06-15 2005-06-15 Hydraulische vorrichtung zum heben und senken eines an einer arbeitsmaschine schwenkbaren arms
DE602005013196T DE602005013196D1 (de) 2005-06-15 2005-06-15 Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425426A EP1733996B1 (de) 2005-06-15 2005-06-15 Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms

Publications (2)

Publication Number Publication Date
EP1733996A1 EP1733996A1 (de) 2006-12-20
EP1733996B1 true EP1733996B1 (de) 2009-03-11

Family

ID=34943224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425426A Not-in-force EP1733996B1 (de) 2005-06-15 2005-06-15 Hydraulische Vorrichtung zum Heben und Senken eines an einer Arbeitsmaschine schwenkbaren Arms

Country Status (3)

Country Link
EP (1) EP1733996B1 (de)
AT (1) ATE425118T1 (de)
DE (1) DE602005013196D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109113120A (zh) * 2018-09-07 2019-01-01 华侨大学 一种电液复合的动臂能量回收系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918684B1 (fr) * 2007-07-10 2012-08-03 Etude Et D Innovation Dans Le Materiel Agricole Soc D Circuit de commande hydraulique d'un verin de levage a double effet
ITUB20154253A1 (it) * 2015-10-09 2017-04-09 Merlo Project Srl Veicolo sollevatore con un braccio di sollevamento telescopico provvisto di un sistema ammortizzatore
WO2019210341A1 (de) 2018-05-04 2019-11-07 Palfinger Ag Hydrauliksystem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662269B2 (ja) * 1989-04-21 1994-08-17 株式会社神戸製鋼所 移動式クレーンの変位抑制装置
GB2365407B (en) * 2000-05-25 2003-10-08 Bamford Excavators Ltd Hydraulic system for wheeled loader
DE20114538U1 (de) * 2001-09-03 2001-10-31 Kuepper Weisser Gmbh Hydrauliksystem für die Eigengewichtsentlastung von Anbaugeräten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109113120A (zh) * 2018-09-07 2019-01-01 华侨大学 一种电液复合的动臂能量回收系统

Also Published As

Publication number Publication date
ATE425118T1 (de) 2009-03-15
EP1733996A1 (de) 2006-12-20
DE602005013196D1 (de) 2009-04-23

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