WO1994020405A1 - Dispositif de levage - Google Patents

Dispositif de levage

Info

Publication number
WO1994020405A1
WO1994020405A1 PCT/SE1994/000187 SE9400187W WO9420405A1 WO 1994020405 A1 WO1994020405 A1 WO 1994020405A1 SE 9400187 W SE9400187 W SE 9400187W WO 9420405 A1 WO9420405 A1 WO 9420405A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
scissor
crossbar
arms
crossbars
Prior art date
Application number
PCT/SE1994/000187
Other languages
English (en)
Inventor
Tomas Ahlrot
Original Assignee
Samhall Rehab Ab
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 Samhall Rehab Ab filed Critical Samhall Rehab Ab
Priority to AU62254/94A priority Critical patent/AU6225494A/en
Publication of WO1994020405A1 publication Critical patent/WO1994020405A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/04—Extensible bedsteads, e.g. with adjustment of length, width, height
    • A47C19/045—Extensible bedsteads, e.g. with adjustment of length, width, height with entire frame height or inclination adjustments
    • 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
    • B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
    • 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
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • 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

Definitions

  • the present invention relates to an apparatus according to the preamble of the independent claim.
  • the present invention relates to an apparatus in which the lifting force is multiplied at the initial stage of the upwardly directed displacement of a part disposed on the apparatus and in which scissor devices are employed for lifting this part.
  • the lifting apparatus is intended to be used for many different practical applications such as lifting tables, beds, working platforms, frames for supporting these and other parts, etc.
  • Fig. 1 is a side elevation of the apparatus in its lowermost position
  • Fig. 2 is a view corresponding to that of Fig. 1 in which the displacement of the lifting portion of the apparatus has been commenced;
  • Fig. 3 is a view corresponding to that of Figs. 1 and 2 in which the lifting portion of the lifting apparatus has reached its highest position;
  • Figs. 4a,b are perspective views of a detail of one end region of the scissor mechanism of the apparatus
  • Fig. 5 is a perspective view in detail of the other end region of the scissor mechanism of the apparatus.
  • wheels 14 support the chas ⁇ sis 10.
  • a prime mover consisting of a motor 15 and a reciprocator 16 is secured in the chassis.
  • the prime mover extends substantially horizon ⁇ tally.
  • a first scissor pair 20 formed of first arms 22a,22b and a second scis ⁇ sor pair 21 formed by second arms 23a,23b carry a frame 30 on which are disposed anchorage devices 31 when coupling the frame, for example, to a lifting platform or to a bed.
  • the scissor pairs 20,21 support lifting tables, beds, work platforms, additional scissor pairs, etc. directly, without employing a frame.
  • a first, upper crossbar 26 connects two of the opposed arms 22a,23a and a second upper crossbar 28 connects the other two opposed arms 22b,23b in the one end regions of the arms.
  • a first lower crossbar 29 connects the opposed arms 22b,23b connected with the second upper crossbar 28, and a second lower crossbar 27 connects the two first-mentioned opposed arms 22a,23a in their other end regions.
  • a journal 24 rotatably connects the first arms to one another, and a journal 25 rotatably connects the second arms to one another so as to form the scissor pairs 20 and 21, respectively.
  • the crossbars are located pairwise 26,29;27,28 above one another in a vertical direction on either side of the journals 24,25 of the scissor pairs.
  • the pair consisting of the first upper and lower crossbars 26,29 is rotatably joumalled in the chassis 10 and in the frame 30, respec- tively.
  • the second pair of crossbars 27,28 is displaceably and rotatably connected to the chassis 10 and the frame 30, respectively.
  • Those paths 32,34 in which the crossbars are displaced are directed substantially transversely of the direction of displacement of the frame 30.
  • the first upper crossbar 26 is fixedly disposed in rotary journals 32 supported in the frame 30, and the first lower crossbar 29 is fixedly disposed in rotary journals 35 supported in the chassis 10.
  • the second lower cross ⁇ bar 27 is displaceably disposed in rotary journals which are displaced in the chassis 10 in paths 33.
  • the second upper crossbar 29 is dis ⁇ placeably disposed in rotary journals which are displaced in the frame 30 in paths 34.
  • the crossbars 26-29 are rotatably joumalled in relation to the chassis 10 and the frame 30, respectively, while the crossbars 26-29 and the scissor arms 22a,b;23a,b are rigidly intercon ⁇ nected with one another.
  • the crossbars are rigidly connected to the chassis in the frame, re ⁇ spectively, while the arms are rotatably joumalled on the crossbars, without deviating from the inventive concept.
  • the upper crossbars 26,28 are dispensed with, in which event the lifting table, bed, etc., is supported via wheels disposed on two scissor arms and via the other two scissor arms rotatably joumalled direct in the supported portion or in parts con ⁇ nected with the supported portion (not shown).
  • the prime mover consists of an electric motor 15 which operates a reciprocator 16.
  • the prime mover may comprise, for example, a hydraulic piston, a pneumatic piston, a ball screw or a gear rack.
  • the type of prime mover which is selected principally depends upon the relevant field of application and those power sources which are available.
  • the reciprocator 16 is rotatably connected to a sleeve 37 which is rotatably disposed on the first lower crossbar 29.
  • An obliquely upwardly directed mechanical transmission device shown in Fig. 3 as an obliquely upwardly directed rod 43 and an abutment member 45 disposed furthest out on the rod 43 is fixed to the sleeve 37.
  • the mechanical transmission device 43,45 is disposed in a predetermined angular rela ⁇ tionship to the arm 36 of the sleeve, the size of the angle being adapted to that moment of force which is sought for in connection with rotation of the sleeve in relation to the first lower crossbar 29.
  • the arm 36 of the sleeve constitutes a lever for the prime mover 15,16 around the sleeve and the crossbar 29, and the force of the prime mover is transmitted via the mechanical transmission device 43,45.
  • the arm 36 is completely vertical in the initial posi ⁇ tion.
  • the arrest member 41 is fixed to parts of the scissor arms 22a, 3a located above the sleeve 37 and connected to the first upper crossbar 26. There will hereby be achieved the sought-for increase of the lifting force in the initial stage of the raising of the frame from its lowermost position.
  • the arrest member 41 consists of two parts each connected to a scissor arm 22a,23a, respectively.
  • the arrest members 41 are fixed with a certain inclination on the scissor arms 22a,23a, this inclination determining how quickly the lifting apparatus lifts. As long as the arrest members 41 rest on the mechanical transmission device, the lifting force is transferred this way.
  • a stop 44 is disposed on the crossbar 29 in order to stop rotation of the rod 43 when additional force is no longer required from the trans- mission device 43,45.
  • the rotation of the sleeve 37 about the crossbar 29 connected to the prime mover thus ceases on contact with the stop 44. This takes place when a mechanical element 38 disposed on the sleeve 37 moves against the stop 44.
  • the arrest of movement takes place at the earliest when the angle between the arms 22a,22b and 23a,23b, respec- tively, in the scissor pairs 20,21 is approx. 20° and preferably takes place when the angle is approx. 25° and most preferably when the angle is approx. 30°.
  • the sleeve 37 which carries the mechanical transmission device 43,45 is joumalled on the displace- able lower crossbar 27, in which event the arrest members 41 are fixed to parts of the scissor arms 22b,23b located above the sleeve 37 and connected to the second upper crossbar 28.
  • the ar- rest member 41 is occasionally placed on a frame portion or the like instead of on the scissor arms.
  • the wheels 14 which support the lifting apparatus and make it mobile are each provided with a parking brake in order to prevent unintentional movement.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

Appareil de levage comprenant une première paire (20) de ciseaux formée par des premiers bras (22a, b) tourillonnés rotatifs l'un dans l'autre à l'aide d'un tourillon (24) et une seconde paire (21) de ciseaux formée de seconds bras (23a, b) tourillonnés rotatifs l'un par rapport à l'autre à l'aide d'un tourillon. Les deux paires de ciseaux soutiennent un châssis (30). Les parties terminales supérieures et inférieures des bras opposés des paires de ciseaux sont reliées à des premmière et seconde barres transversales (26, 28) supérieures et à des première et seconde barres transversales (27, 29) inférieures. Un moteur d'entraînement (15, 16) est relié rotatif par l'intermédiaire d'un bras (36) à un dispositif (37) de type manchon qui est placé rotatif autour de la première barre transversale (29) inférieure. Un dispositif (43, 45) de transmission mécanique est fixé au manchon (37) angulairement par rapport au bras dudit manchon. Le dispositif (43, 45) de transmission est placé de manière à venir buter, lorsque le châssis se trouve dans sa position la plus basse, contre un élément d'arrêt (41) situé sur des parties terminales supérieures d'un premier bras (22a) de ciseau et d'un second bras (23a) de ciseau situé au-dessus du manchon (37). Lorsque le châssis (30) est soulevé, ledit dispositif de transmission exerce une force dirigée vers le haut contre l'élément d'arrêt (41), cette force étant créée par le moment que le manchon (37) transmet au dispositif de transmission mécanique (43, 45) lorsque le moteur d'entraînement (15, 16) provoque la rotation du manchon (37).
PCT/SE1994/000187 1993-03-09 1994-03-04 Dispositif de levage WO1994020405A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62254/94A AU6225494A (en) 1993-03-09 1994-03-04 Lifting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9300816A SE501039C2 (sv) 1993-03-09 1993-03-09 Lyftanordning
SE9300816-7 1993-03-09

Publications (1)

Publication Number Publication Date
WO1994020405A1 true WO1994020405A1 (fr) 1994-09-15

Family

ID=20389198

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1994/000187 WO1994020405A1 (fr) 1993-03-09 1994-03-04 Dispositif de levage

Country Status (3)

Country Link
AU (1) AU6225494A (fr)
SE (1) SE501039C2 (fr)
WO (1) WO1994020405A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0781517A1 (fr) * 1995-12-29 1997-07-02 BORTOLUZZI SISTEMI S.r.L. Mécanisme pour le réglage en hauteur et en inclinaison d'un support de matelas pour un lit
DE19543301C2 (de) * 1995-09-09 1999-12-16 Thueringer Fleischereimaschine Hubvorrichtung für Sitz-, Liege- oder Abstellflächen
EP1598042A2 (fr) * 2004-05-21 2005-11-23 Evac + Chair International Limited Civière ajustable verticalement
DE19604074B4 (de) * 1996-02-05 2007-03-15 Barthelt, Hans-Peter, Dipl.-Ing. Hubvorrichtung für Pflegebetten
EP2110055A1 (fr) * 2008-04-14 2009-10-21 Gruppo Industriale Formenti S.A.S. Di Fabio e Marco Formenti & C. Système de levage automatique pour la surface de support d'un sommier de lit
US9617130B2 (en) 2016-02-05 2017-04-11 HVAC—Jack, L.L.C. Mechanical scissor lift

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1256920A (fr) * 1960-05-13 1961-03-24 Maschinen Trepel Kg Perfectionnements apportés aux tables de levage hydrauliques
CH356893A (de) * 1956-08-22 1961-09-15 Trepel Ingo Hebevorrichtung mit mindestens einem Hebetisch für plattenförmige Werkstücke, an Bearbeitungsvorrichtungen
DE3104182A1 (de) * 1980-02-12 1981-12-24 Augusto Caravaggio Bergamo Capetti Hubvorrichtung, insbesondere zum verfahren von moebelstellflaechen und dergleichen
US4890692A (en) * 1988-12-06 1990-01-02 Jlg Industries, Inc. Platform elevating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH356893A (de) * 1956-08-22 1961-09-15 Trepel Ingo Hebevorrichtung mit mindestens einem Hebetisch für plattenförmige Werkstücke, an Bearbeitungsvorrichtungen
FR1256920A (fr) * 1960-05-13 1961-03-24 Maschinen Trepel Kg Perfectionnements apportés aux tables de levage hydrauliques
DE3104182A1 (de) * 1980-02-12 1981-12-24 Augusto Caravaggio Bergamo Capetti Hubvorrichtung, insbesondere zum verfahren von moebelstellflaechen und dergleichen
US4890692A (en) * 1988-12-06 1990-01-02 Jlg Industries, Inc. Platform elevating apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543301C2 (de) * 1995-09-09 1999-12-16 Thueringer Fleischereimaschine Hubvorrichtung für Sitz-, Liege- oder Abstellflächen
EP0781517A1 (fr) * 1995-12-29 1997-07-02 BORTOLUZZI SISTEMI S.r.L. Mécanisme pour le réglage en hauteur et en inclinaison d'un support de matelas pour un lit
DE19604074B4 (de) * 1996-02-05 2007-03-15 Barthelt, Hans-Peter, Dipl.-Ing. Hubvorrichtung für Pflegebetten
EP1598042A2 (fr) * 2004-05-21 2005-11-23 Evac + Chair International Limited Civière ajustable verticalement
EP1598042A3 (fr) * 2004-05-21 2006-01-18 Evac + Chair International Limited Civière ajustable verticalement
EP2110055A1 (fr) * 2008-04-14 2009-10-21 Gruppo Industriale Formenti S.A.S. Di Fabio e Marco Formenti & C. Système de levage automatique pour la surface de support d'un sommier de lit
US9617130B2 (en) 2016-02-05 2017-04-11 HVAC—Jack, L.L.C. Mechanical scissor lift

Also Published As

Publication number Publication date
SE501039C2 (sv) 1994-10-24
AU6225494A (en) 1994-09-26
SE9300816D0 (sv) 1993-03-09
SE9300816L (sv) 1994-09-10

Similar Documents

Publication Publication Date Title
US4898103A (en) Desk construction
EP0119409B1 (fr) Mécanisme de pied et son servo-entraînement
DE10147602B4 (de) Unbegrenzt neigbarer Kamerakran
US8132518B2 (en) Substantially linear vertical lift system
JP2005504605A (ja) 手術台
WO1994020405A1 (fr) Dispositif de levage
US5271603A (en) Vehicle jack
AU8420398A (en) Transport device
KR101730819B1 (ko) 하중 분산 지지체를 구비한 다자유도 시뮬레이터
WO2004004842A1 (fr) Machine d'exercice
KR910007125B1 (ko) 차체수리장치
KR100375841B1 (ko) 모터구동시스템을 구비한 대차
CA1167092A (fr) Table de traitement
JPH03193005A (ja) 床部延長の可能な床部昇降式ベッド
GB2241690A (en) Platform scissor lift
EP3781009B1 (fr) Machine monobrosse orbitale pour le traitement des sols
CN1664244A (zh) 工作装置的减振导向杆
KR970005863A (ko) 야적 운반 차량
WO2020260764A1 (fr) Structure de socle réglable du lit
EP0146176A2 (fr) Plate-forme de levage pour rentrer et couvrir des véhicules
CN116020083B (zh) 一种康复理疗用体能恢复训练装置及方法
EP1704899A1 (fr) Barres parallèles pour exercices physiques où physiothérapeutiques ayant des barres réglables
JP3004148B2 (ja) ガラス板の転倒装置
US4627600A (en) Mechanism to be mounted between two parts, whose mutual distance must be variable
DE19713805A1 (de) Vorrichtung zur physischen Simulation virtueller Räume

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB HU JP KP KR KZ LK LU LV MG MN MW NL NO NZ PL PT RO RU SD SE SI SK UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA