EP0028748A3 - Hydraulic lifting platform - Google Patents

Hydraulic lifting platform Download PDF

Info

Publication number
EP0028748A3
EP0028748A3 EP80106529A EP80106529A EP0028748A3 EP 0028748 A3 EP0028748 A3 EP 0028748A3 EP 80106529 A EP80106529 A EP 80106529A EP 80106529 A EP80106529 A EP 80106529A EP 0028748 A3 EP0028748 A3 EP 0028748A3
Authority
EP
European Patent Office
Prior art keywords
lift
lifting platform
hydraulic lifting
pump
check 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.)
Withdrawn
Application number
EP80106529A
Other languages
German (de)
French (fr)
Other versions
EP0028748A2 (en
Inventor
Hans Dipl.-Ing. Nussbaum
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.)
Otto Nussbaum GmbH and Co KG
Original Assignee
Otto Nussbaum GmbH and Co 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 Otto Nussbaum GmbH and Co KG filed Critical Otto Nussbaum GmbH and Co KG
Publication of EP0028748A2 publication Critical patent/EP0028748A2/en
Publication of EP0028748A3 publication Critical patent/EP0028748A3/en
Withdrawn legal-status Critical Current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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/04—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars hydraulically or pneumatically operated

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

Bei einer hydraulischen Hebebühne wird zur Erzeilung eines einfachen und betriebssicheren Aufbaus der hydrauli­ schen Anlage eine Pumpe mit zwei Förderrichtungen vorge­ sehen, die in der einen Förderrichtung den Hubzylinder zum Heben der Hebebühne über ein hydraulisch entsperrbares Rückschlagventil beaufschlagt, während in der anderen För­ derrichtung der Pumpe dieses Rückschlagventil zum Absen­ ken der Hebebühne hydraulisch entriegelt wird. In the case of a hydraulic lift, it becomes a production a simple and reliable construction of the hydrauli a pump with two delivery directions see the lifting cylinder in one direction of conveyance Lifting the lift over a hydraulically unlockable Check valve pressurized, while in the other För the direction of the pump this check valve to the outside ken the lift is unlocked hydraulically.

EP80106529A 1979-10-26 1980-10-24 Hydraulic lifting platform Withdrawn EP0028748A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2943370 1979-10-26
DE19792943370 DE2943370A1 (en) 1979-10-26 1979-10-26 HYDRAULIC LIFT

Publications (2)

Publication Number Publication Date
EP0028748A2 EP0028748A2 (en) 1981-05-20
EP0028748A3 true EP0028748A3 (en) 1981-05-27

Family

ID=6084487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106529A Withdrawn EP0028748A3 (en) 1979-10-26 1980-10-24 Hydraulic lifting platform

Country Status (2)

Country Link
EP (1) EP0028748A3 (en)
DE (1) DE2943370A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836903C1 (en) * 1988-10-29 1990-02-22 Maschinenfabrik J.A. Becker U. Soehne Neckarsulm Gmbh & Co Kg, 7107 Neckarsulm, De
FR2709519A1 (en) * 1993-08-31 1995-03-10 Sefac Equipement Single-acting jack, particularly a lift jack especially for a vehicle
CN112062034A (en) * 2020-09-08 2020-12-11 广东技术师范大学 Robot transportation device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1288529A (en) * 1961-05-04 1962-03-24 Reversible motor-pump unit with automatic control applicable in particular to hoists and lifts
DE1188400B (en) * 1961-06-24 1965-03-04 Teves Kg Alfred Check valve with opening by a pressurized piston
US3276547A (en) * 1963-07-04 1966-10-04 Ver Flugtechnische Werke Stationary hydraulic lifting apparatus
US3395777A (en) * 1967-04-28 1968-08-06 Rodosta John Automobile lift
US3461959A (en) * 1965-08-19 1969-08-19 Martin B Conrad Retrievable bridge plug
DE2810579A1 (en) * 1978-03-11 1979-09-20 Schwelm & Towler Hydraulics Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1288529A (en) * 1961-05-04 1962-03-24 Reversible motor-pump unit with automatic control applicable in particular to hoists and lifts
DE1188400B (en) * 1961-06-24 1965-03-04 Teves Kg Alfred Check valve with opening by a pressurized piston
US3276547A (en) * 1963-07-04 1966-10-04 Ver Flugtechnische Werke Stationary hydraulic lifting apparatus
US3461959A (en) * 1965-08-19 1969-08-19 Martin B Conrad Retrievable bridge plug
US3395777A (en) * 1967-04-28 1968-08-06 Rodosta John Automobile lift
DE2810579A1 (en) * 1978-03-11 1979-09-20 Schwelm & Towler Hydraulics Hydraulic pipe breakage protection equipment - has hydraulically released non-return valve between pipe and protected item

Also Published As

Publication number Publication date
DE2943370A1 (en) 1982-05-27
EP0028748A2 (en) 1981-05-20

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19811126

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830826

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NUSSBAUM, HANS, DIPL.-ING.