WO2000003942A3 - Lowering brake device for hydraulic elevating platforms - Google Patents

Lowering brake device for hydraulic elevating platforms Download PDF

Info

Publication number
WO2000003942A3
WO2000003942A3 PCT/DE1999/002166 DE9902166W WO0003942A3 WO 2000003942 A3 WO2000003942 A3 WO 2000003942A3 DE 9902166 W DE9902166 W DE 9902166W WO 0003942 A3 WO0003942 A3 WO 0003942A3
Authority
WO
WIPO (PCT)
Prior art keywords
working platform
lowering
lowering valve
brake device
hydraulic elevating
Prior art date
Application number
PCT/DE1999/002166
Other languages
German (de)
French (fr)
Other versions
WO2000003942A2 (en
Inventor
Rudolf Lehnert
Original Assignee
Rudolf Lehnert
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 Rudolf Lehnert filed Critical Rudolf Lehnert
Publication of WO2000003942A2 publication Critical patent/WO2000003942A2/en
Publication of WO2000003942A3 publication Critical patent/WO2000003942A3/en

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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0641—Single levers, e.g. parallel links

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Braking Arrangements (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

The invention relates to a lowering brake device for a hydraulic elevating platform, wherein the working platform (2) is moved by a parallel suspension arm arrangement and the position of the lowering valve (21) is decoupled from the position of the control pedal (19) for the lowering valve (21) when the working platform (2) is being lowered by opening the lowering valve (21) of the hydraulic cylinder (4). In order to throttle the lowering speed of the working platform (2) when the lower resting position of the working platform (2) is reached, the position of the lowering valve (21) is regulated depending on the altitude of the working platform (2) thereby complying with safety requirements. Opening of the lowering valve (21) is controlled by a regulating shaft (17) which regulates the opened state of the lowering valve (21) depending on the altitude of the working platform (2).
PCT/DE1999/002166 1998-07-14 1999-07-13 Lowering brake device for hydraulic elevating platforms WO2000003942A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831546.5 1998-07-14
DE1998131546 DE19831546C1 (en) 1998-07-14 1998-07-14 Lowering brake device for hydraulic lifts

Publications (2)

Publication Number Publication Date
WO2000003942A2 WO2000003942A2 (en) 2000-01-27
WO2000003942A3 true WO2000003942A3 (en) 2000-09-21

Family

ID=7874017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/002166 WO2000003942A2 (en) 1998-07-14 1999-07-13 Lowering brake device for hydraulic elevating platforms

Country Status (2)

Country Link
DE (1) DE19831546C1 (en)
WO (1) WO2000003942A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10026037A1 (en) * 2000-05-25 2001-12-06 Hein Gericke Gmbh Lifting device especially for motorcycles under repair has rotatably mounted locking pawl and toothed rack rotating with lifting frame, and lock is mechanically released by operating element on drive
DE102008039224A1 (en) * 2008-08-20 2010-03-04 Mhg Gmbh flat Lifter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055754A (en) * 1979-08-08 1981-03-11 Inst Produktudvikling An actuator mechanism for lifting and lowering the supporting surface of piece of furniture, such as a bed or chair, having a locking mechanism for maintaining the supporting surface in a vertical position obtained by means of the actuator mechanism
DE29719926U1 (en) * 1997-11-10 1998-02-26 Lehnert, Rudolf, 86529 Schrobenhausen Mechanical height adjustment of hand-operated motorcycle lifts
DE29817350U1 (en) * 1998-07-14 1999-04-08 Lehnert, Rudolf, 86529 Schrobenhausen Lowering brake device for hydraulic lifts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6916660U (en) * 1969-04-25 1969-10-09 Ver Flugtechnische Werke DEVICE FOR DAMPING THE IN AND OUT MOVEMENT OF HYDRAULICALLY OPERATED LIFTING TABLES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055754A (en) * 1979-08-08 1981-03-11 Inst Produktudvikling An actuator mechanism for lifting and lowering the supporting surface of piece of furniture, such as a bed or chair, having a locking mechanism for maintaining the supporting surface in a vertical position obtained by means of the actuator mechanism
DE29719926U1 (en) * 1997-11-10 1998-02-26 Lehnert, Rudolf, 86529 Schrobenhausen Mechanical height adjustment of hand-operated motorcycle lifts
DE29817350U1 (en) * 1998-07-14 1999-04-08 Lehnert, Rudolf, 86529 Schrobenhausen Lowering brake device for hydraulic lifts

Also Published As

Publication number Publication date
WO2000003942A2 (en) 2000-01-27
DE19831546C1 (en) 2000-05-11

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