GB2004248A - Hydraulic hoisting frame apparatus for floor conveying vehicles or shelf conveyors - Google Patents

Hydraulic hoisting frame apparatus for floor conveying vehicles or shelf conveyors

Info

Publication number
GB2004248A
GB2004248A GB7833843A GB7833843A GB2004248A GB 2004248 A GB2004248 A GB 2004248A GB 7833843 A GB7833843 A GB 7833843A GB 7833843 A GB7833843 A GB 7833843A GB 2004248 A GB2004248 A GB 2004248A
Authority
GB
United Kingdom
Prior art keywords
circuit
hoisting frame
hydraulic
frame apparatus
hoisting
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
Application number
GB7833843A
Other versions
GB2004248B (en
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.)
Jungheinrich AG
Original Assignee
Jungheinrich Unternehmensverwaltung KG
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 Jungheinrich Unternehmensverwaltung KG filed Critical Jungheinrich Unternehmensverwaltung KG
Publication of GB2004248A publication Critical patent/GB2004248A/en
Application granted granted Critical
Publication of GB2004248B publication Critical patent/GB2004248B/en
Expired legal-status Critical Current

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)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

In a hoisting apparatus with one or two hoisting piston-cylinder assemblies 1,3 connected in a hydraulic circuit the improvement of two functionally separate hydraulic circuits with separate cylinder chambers for the hydraulic pressurized fluid, i.e. a storage circuit that is directly connected to a storage tank 35 and a pump circuit including a spool valve 18 for controlling the operation of the load handling means, i.e. the hoisting frame 12. The storage circuit and the pump circuit are inter- connected by a "make-up" line 42 which is normally blocked and adapted to be unblocked in a certain operative position of the controlling spool valve 43. The activation or unblocking of the make-up line may be effected by pressure monitoring means 31 in the storage circuit. <IMAGE>
GB7833843A 1977-09-15 1978-08-18 Hydraulic hoisting apparatus for floor conveying vehicles or shelf conveyors and hoisting frame mechanism for such hoisting apparatus Expired GB2004248B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2741497A DE2741497C2 (en) 1977-09-15 1977-09-15 Hydraulic system for the lifting drive of a lift truck

Publications (2)

Publication Number Publication Date
GB2004248A true GB2004248A (en) 1979-03-28
GB2004248B GB2004248B (en) 1982-02-17

Family

ID=6018991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7833843A Expired GB2004248B (en) 1977-09-15 1978-08-18 Hydraulic hoisting apparatus for floor conveying vehicles or shelf conveyors and hoisting frame mechanism for such hoisting apparatus

Country Status (4)

Country Link
DE (1) DE2741497C2 (en)
FR (1) FR2403293A1 (en)
GB (1) GB2004248B (en)
IT (1) IT1098604B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251290A2 (en) * 1986-07-02 1988-01-07 Still Gmbh Vehicle, especially a maintenance vehicle, with a hydraulic operating device and a hydraulic servo steering device
US5060762A (en) * 1990-05-24 1991-10-29 Otis Elevator Company Pressure intensifier for repositioning telescopic plungers in synchronized telescopic cylinders
US6026934A (en) * 1998-06-26 2000-02-22 Monarch Hydraulics, Inc. Hydraulic lift with yoked cylinders
EP1528035A2 (en) * 2003-10-22 2005-05-04 STILL WAGNER GmbH & Co KG Lifting device for high rise shelves
CN105090136A (en) * 2015-09-14 2015-11-25 四川川润液压润滑设备有限公司 Dead-weight falling-back type energy recovery hydraulic device
EP1369376B1 (en) * 2002-06-05 2017-10-11 Toyota Material Handling Europe AB telescopic truck mast with balancing cylinder for the dead weight

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014109084B4 (en) 2014-06-27 2023-08-17 Linde Material Handling Gmbh Industrial truck with lifting mast and energy recovery

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE874277C (en) * 1951-10-19 1953-04-23 Hans Still Ag Hydraulic lifting device for stacking devices
DE1006732B (en) * 1955-12-24 1957-04-18 Irion & Vosseler Hydraulic drive for industrial trucks
DE1137389B (en) * 1957-02-19 1962-09-27 Yale & Towne Mfg Co Lift truck with telescopic mast made of U-rails
US2951558A (en) * 1957-05-02 1960-09-06 Allis Chalmers Mfg Co Shock absorbing device
FR1236207A (en) * 1958-10-29 1960-07-15 Clark Equipment Co Hydraulic mechanism
FR1268107A (en) * 1960-09-21 1961-07-28 Yale & Towne Mfg Co Hydraulic device for industrial trolley
DE1406793A1 (en) * 1962-09-07 1968-11-21 Daimler Benz Ag Forklift truck, excavator or the like. Mobile lifting device
US3186305A (en) * 1963-07-02 1965-06-01 Ex Cell O Corp Hydraulic actuator mechanism
US3353352A (en) * 1966-01-11 1967-11-21 Caterpillar Tractor Co Load balancing system for hydraulic jack
FR2275987A2 (en) * 1973-05-30 1976-01-23 Lucas Gustave Silage cutting device on trailer - has cutter and container on lift device and hinged transmission
DE2327577C3 (en) * 1973-05-30 1980-03-27 Integral Hydraulik & Co, 4000 Duesseldorf Hydraulic circuit for lifting vehicles
US3956891A (en) * 1974-12-30 1976-05-18 Allis-Chalmers Corporation Closed center hydraulic system for lift trucks
US3964260A (en) * 1975-05-27 1976-06-22 Towmotor Corporation Energy conservation apparatus for an electric vehicle
US4002220A (en) * 1975-07-11 1977-01-11 Towmotor Corporation Priority steer system--hydraulic
DE2726246C3 (en) * 1977-06-10 1981-11-12 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Hydraulic system for the lifting drive of a lift truck
DE2741496A1 (en) * 1977-09-15 1979-03-29 Jungheinrich Kg FLOOR CONVEYOR VEHICLE WITH A HYDRAULIC LIFTING CYLINDER PISTON DEVICE FOR A LIFTING FRAME

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251290A2 (en) * 1986-07-02 1988-01-07 Still Gmbh Vehicle, especially a maintenance vehicle, with a hydraulic operating device and a hydraulic servo steering device
EP0251290A3 (en) * 1986-07-02 1989-03-08 Still Gmbh Vehicle, especially a maintenance vehicle, with a hydraulic operating device and a hydraulic servo steering device
US5060762A (en) * 1990-05-24 1991-10-29 Otis Elevator Company Pressure intensifier for repositioning telescopic plungers in synchronized telescopic cylinders
US6026934A (en) * 1998-06-26 2000-02-22 Monarch Hydraulics, Inc. Hydraulic lift with yoked cylinders
EP1369376B1 (en) * 2002-06-05 2017-10-11 Toyota Material Handling Europe AB telescopic truck mast with balancing cylinder for the dead weight
EP1528035A2 (en) * 2003-10-22 2005-05-04 STILL WAGNER GmbH & Co KG Lifting device for high rise shelves
EP1528035A3 (en) * 2003-10-22 2006-09-13 STILL WAGNER GmbH & Co KG Lifting device for high rise shelves
CN105090136A (en) * 2015-09-14 2015-11-25 四川川润液压润滑设备有限公司 Dead-weight falling-back type energy recovery hydraulic device

Also Published As

Publication number Publication date
IT1098604B (en) 1985-09-07
DE2741497A1 (en) 1979-03-29
IT7827679A0 (en) 1978-09-14
DE2741497C2 (en) 1981-09-17
FR2403293A1 (en) 1979-04-13
GB2004248B (en) 1982-02-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee