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IT1272114B - Unita' di sollevamento delle forche in carrelli elevatori - Google Patents

Unita' di sollevamento delle forche in carrelli elevatori

Info

Publication number
IT1272114B
IT1272114B ITMI930528A ITMI930528A IT1272114B IT 1272114 B IT1272114 B IT 1272114B IT MI930528 A ITMI930528 A IT MI930528A IT MI930528 A ITMI930528 A IT MI930528A IT 1272114 B IT1272114 B IT 1272114B
Authority
IT
Italy
Prior art keywords
stroke
forklifts
forks
piston
lifting units
Prior art date
Application number
ITMI930528A
Other languages
English (en)
Inventor
Luigi Santamaria
Original Assignee
Fiat Om Carrelli Elevatori 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 Fiat Om Carrelli Elevatori Spa filed Critical Fiat Om Carrelli Elevatori Spa
Priority to ITMI930528A priority Critical patent/IT1272114B/it
Publication of ITMI930528A0 publication Critical patent/ITMI930528A0/it
Priority to AT94200679T priority patent/ATE171695T1/de
Priority to DE69413593T priority patent/DE69413593T2/de
Priority to ES94200679T priority patent/ES2123704T3/es
Priority to EP94200679A priority patent/EP0622331B1/en
Publication of ITMI930528A1 publication Critical patent/ITMI930528A1/it
Application granted granted Critical
Publication of IT1272114B publication Critical patent/IT1272114B/it

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
    • B66F9/08—Masts; Guides; Chains
    • 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
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Loading Or Unloading Of Vehicles (AREA)
  • Actuator (AREA)
  • Handcart (AREA)

Abstract

In un'unità di sollevamento delle forche in carrelli elevatori impiegante per il sollevamento e l'abbassamento delle forche uno o più cilindri idraulici a semplice effetto (19), è previsto che nei due tratti terminali contrapposti di corsa del pistone (31) del cilindro idraulico (19) elementi di intercettazione (37, 34) determinino una riduzione di sezione di deflusso di fluido motore rispettivamente da una prima (44) e da una seconda camera (45) a volume variabile all'interno del cilindro idraulico (19); ciò determina una frenatura della corsa del pistone (31) e quindi dello stelo di azionamento (33) ad esso solidale, evitando brusche sollecitazioni al carico gravante sulle forche.
ITMI930528A 1993-03-19 1993-03-19 Unita' di sollevamento delle forche in carrelli elevatori IT1272114B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ITMI930528A IT1272114B (it) 1993-03-19 1993-03-19 Unita' di sollevamento delle forche in carrelli elevatori
AT94200679T ATE171695T1 (de) 1993-03-19 1994-03-16 Hebeeinheit für die gabeln von hubwagen
DE69413593T DE69413593T2 (de) 1993-03-19 1994-03-16 Hebeeinheit für die Gabeln von Hubwagen
ES94200679T ES2123704T3 (es) 1993-03-19 1994-03-16 Una unidad para elevar las horquillas de las carretillas elevadoras.
EP94200679A EP0622331B1 (en) 1993-03-19 1994-03-16 A lifting unit for the forks of lift trucks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI930528A IT1272114B (it) 1993-03-19 1993-03-19 Unita' di sollevamento delle forche in carrelli elevatori

Publications (3)

Publication Number Publication Date
ITMI930528A0 ITMI930528A0 (it) 1993-03-19
ITMI930528A1 ITMI930528A1 (it) 1994-09-19
IT1272114B true IT1272114B (it) 1997-06-11

Family

ID=11365414

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930528A IT1272114B (it) 1993-03-19 1993-03-19 Unita' di sollevamento delle forche in carrelli elevatori

Country Status (5)

Country Link
EP (1) EP0622331B1 (it)
AT (1) ATE171695T1 (it)
DE (1) DE69413593T2 (it)
ES (1) ES2123704T3 (it)
IT (1) IT1272114B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19710556C2 (de) * 1997-03-14 1999-03-11 Jungheinrich Ag Ausfahrbare Mastkonstruktion für einen Hubwagen
DE29707639U1 (de) * 1997-04-28 1997-08-21 Still GmbH, 22113 Hamburg Hydraulischer Zylinder mit Stoßsicherung
DE19802119A1 (de) * 1998-01-21 1999-07-22 Still Wagner Gmbh & Co Kg Flurförderzeug mit einer Hubvorrichtung
US6557456B2 (en) 2001-05-24 2003-05-06 The Raymond Corporation Cushioned actuator
DE10214864C5 (de) * 2002-04-04 2009-12-17 Linde Material Handling Gmbh Hydraulischer Zylinder mit Endlagendämpfung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1414638A (fr) * 1964-11-25 1965-10-15 Appalette Amortisseur hydraulique réglable de fin de course pour vérins hydrauliques à piston plongeur
FR2024747A1 (it) * 1969-05-02 1970-09-04 Lati Ste
US4006666A (en) * 1975-05-22 1977-02-08 Towmotor Corporation Cushioning device for a hydraulic jack
DE3146845A1 (de) * 1981-11-26 1983-06-01 Wabco Steuerungstechnik GmbH & Co, 3000 Hannover Einrichtung zur endabbremsung des arbeitskolbens eines doppeltwirkenden arbeitszylinders
US4476960A (en) * 1982-08-09 1984-10-16 Towmotor Corporation Adjustable chain anchor for lift trucks
CN1008201B (zh) * 1985-02-28 1990-05-30 株式会社丰田自动织机制作所 具有缓冲流量控制阀装置的液压操作缸

Also Published As

Publication number Publication date
DE69413593D1 (de) 1998-11-05
ITMI930528A0 (it) 1993-03-19
ITMI930528A1 (it) 1994-09-19
EP0622331B1 (en) 1998-09-30
ES2123704T3 (es) 1999-01-16
DE69413593T2 (de) 1999-03-18
EP0622331A1 (en) 1994-11-02
ATE171695T1 (de) 1998-10-15

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990331