WO1996026886A1 - Elevateurs a colonnes - Google Patents

Elevateurs a colonnes Download PDF

Info

Publication number
WO1996026886A1
WO1996026886A1 PCT/AU1996/000104 AU9600104W WO9626886A1 WO 1996026886 A1 WO1996026886 A1 WO 1996026886A1 AU 9600104 W AU9600104 W AU 9600104W WO 9626886 A1 WO9626886 A1 WO 9626886A1
Authority
WO
WIPO (PCT)
Prior art keywords
column
shaft
bearing assembly
ball bearing
hoist
Prior art date
Application number
PCT/AU1996/000104
Other languages
English (en)
Inventor
John Kerry Wells
Original Assignee
Endurequip Pty. Ltd.
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 Endurequip Pty. Ltd. filed Critical Endurequip Pty. Ltd.
Priority to NZ301619A priority Critical patent/NZ301619A/en
Priority to AU47092/96A priority patent/AU696899B2/en
Publication of WO1996026886A1 publication Critical patent/WO1996026886A1/fr

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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated

Definitions

  • a major disadvantage of conventional travelling nut systems in vehicle hoists is that due to excessive friction between the nut and shaft, particularly when worn, a large high powered motor is required to drive the shaft to overcome f ⁇ ctional losses Generally speaking such travelling nut systems have limited load capacities
  • the load bearing recirculating ball bearing assembly and said further recirculating ball bearing assembly are coupled to prevent relative rotation therebetween
  • the load bearing recirculating ball bearing assembly and the further recirculating ball bearing assembly are coupled such that in use the load bearing recirculating ball bearing assembly bears substantially all of the load of said carnage and any mass supported thereon
  • coupling means is provided between said load bearing recirculating ball bearing assembly and the further recirculating ball bearing assembly to permit, in use, transference of load to said further recirculating ball bearing assembly upon failure of said load bearing recirculating ball bearing assembly
  • said coupling means comprises two s dably engageable coupling members, each coupling member being associated with a respective one of said load bearing recirculating ball bearing assembly and said further recirculating ball bearing assembly
  • said hoist includes a sensing means adapted to provide a signal upon failure of said load bearing recirculating ball bearing assembly If required said signal may control said drive means such that rotation of said shaft is restricted to a single direction which effects lowering of said carnage
  • the load bearing recirculating ball bearing assembly may be coupled to the lifting carriage by a self centering coupling means
  • the shaft is rotatably suspended adjacent an upper end of the column
  • the shaft may be rotatably mounted adjacent both upper and lower ends of the column
  • the lifting carriage is shdably mounted on and cantilevered from said at least one column, said carriage including rollers locating on opposite surfaces of said at least one column
  • the column hoist may be mounted on wheels or rollers for mobile operation
  • the column hoist includes steerable wheels
  • FIG 1 is a part cross sectioned front view of a hoist according to the invention
  • FIG 2 is a left side view of FIG 1 ,
  • FIG 3 is a cross sectional plan view of FIG 1 when viewed in the direction BB,
  • FIG 4 is a detailed cross sectional view of an upper portion of the rotatable shaft mounting CC
  • FIG 5 is a cross sectional view of part of FIG 1 when viewed in the direction AA.
  • FIG 6 is a detailed view of a shaft and bearing assembly of FIG 1 DETAILED DESCRIPTION
  • a column hoist 10 having a pair of upright spaced columns 1 1 , 12 interconnected at their upper ends by a plate 13
  • cover plates 13a, 13b are mounted to upper ends of columns 11 , 12
  • the lower ends of columns 1 1 , 12 are connected to a base 14 comprising a pair of parallel extending feet 15, 16 attached to a respective end of a connecting member 17
  • rollers 18 are rotatably mounted at the free ends of feet 15, 16
  • Two pneumatic wheels 19 are rotatably mounted to a wheel mounting 20 which is pivotally attached to a support frame 21 to allow for steering of wheels 19
  • the support frame 21 is attached adjacent the lower ends of columns 1 1 , 12 and a handle 22 is used to steer hoist 10 when it is being transported on rollers 18 and wheels 19
  • wheels 19 are pressurised such that when hoist 10 supports a load, wheels 19 are slightly flattened resulting in two underside plates 22 associated with base 14 contacting a ground surface 23 to stabilize hoist 10 under load
  • a lifting carnage 24 is shdably cantilevered on columns 11 , 12 to allow vertical movement of carnage 24 along columns 11 , 12
  • Lifting carriage 24 includes a pair of parallel spaced lifting arms 25 mounted to opposite ends of a transverse member 26
  • a pair of spaced arms 27 incline upwardly from member 26 between columns 11 , 12 to a support strut 26a bridging the upper ends of arms 25
  • Rotatably mounted to lifting carriage 24 is a first pair of rollers 28 each of which abut a respective first bearing plate pair 29 mounted on opposite surfaces of column 11
  • there is a second pair of rollers 30 which abut a respective second bearing plate pair 31 mounted on opposite surfaces of column 12
  • Each roller of pairs 28, 30 has a respective annular shoulder 28a, 30a which abuts a corresponding edge of plates 29 or 31
  • abutment members 32 which are in sliding contact with a respective one of inwardly facing opposed surfaces 33, 34 of columns 11 , 12
  • FIG 4 there is illustrated a mounting for shaft 37 having a thrust bearing 35 with an annular convex seat to allow bearing 35 to be mounted to plate 13 to allow self centering of bearing 35 in an annular concave recess 36 Accordingly, convex seat and concave recess 36 are complementary in shape and size
  • Shaft 37 is rotatably mounted to bearing 35 and is suspended in tension from bearing 35 by an arrangement of a washer 38, cover 39 and lock nut 40 which engages a threaded portion 41 of shaft 37 A further cover 39a mounted to plate 13 assists in protecting and covering bearing 35
  • Gearbox 42 and motor 43 assembly (not shown in FIG 4) are coupled to shaft 37 by keyway 44 and associated key 45 in a manner which is apparent to a person skilled in the art
  • the lower end of shaft 37 has no associated bearing or mounting and therefore shaft 37 is in constant tension when under load However, if desired the lower end can be loosely joumalled or even mounted to hoist 10 by another bearing
  • shaft 37 has a threaded portion 46 comprising a helical thread groove 47 having a particular cross section
  • a pair of identical shaft engagement means in the form a load bearing of recirculating ball bearing assembly 48a and a further recirculating ball bearing assembly 48b (one of which is partially shown in cross section in FIG 6) are operatively coupled to shaft 37
  • Each bearing assembly 48a and 48b has a housing 49 having a helical passage 49a with a continuous line of ball bearings 50 held captive therein to maximise the surface area contact between the shaft and the bearing assembly
  • Helical passage 49a provides operative coupling to shaft 37 in which protruding portions of ball bearings 50 engage aligned groove 47 to define a helical ball path between an upper and lower end of housing 49
  • a return passage 49b in housing 49 provides communication between upper and lower ends of helical passage 49a thereby allowing ball bearings 50 to recirculate during rotation of shaft 37
  • Bearing assembly 48a is mounted on an upper collar 51 which has an arcuately tapered annular seat 51 a Bearing assembly 48b is mounted on lower collar 52 Collars 51 and 52 are coupled together by connecting pin 53 to prevent relative rotation between bearing assemblies 48a and
  • Pin 53 is shdably located in an operative in collar 52
  • Seat 51 a engages an annular recess 53 of complementary shape in a thrust plate 54 bridging spaced arms 27
  • a threaded pin 51 b is screwed into a threaded aperture in collar 51 , the free end of which pin engages in an apertured plate 54a extending from thrust plate 54 This pin 51 b restricts rotation of assembly 48a during rotation of shaft 37 Further relative rotation between assemblies
  • shaft 31 rotates and causes lifting carriage 24 to be raised or lowered
  • ball bearings 50 continuously circulate around passage 49a of a respective assemblies 48a or 48b
  • the ball bearings 50 operatively couple assemblies 48a or 48b to shaft 37 and due to the complementary shape of the ball bearings 50 and grooves 47, there is a substantial and even distribution of forces resulting from loads supported on lifting carriage 24
  • the use of recirculating ball bearings rather than travelling nuts provides a more even wear pattern on the shaft, the bearing housing and the balls and to a large degree alleviates the problem of thread deformation or thread stripping with prior art travelling nuts
  • recirculating ball bearing assemblies permits the use of a drive motor having a substantially lower power requirement than a travelling nut assembly due to the substantially reduced f ⁇ ctional engagement between the shaft and the bearing assembly Moreover a greatly increased life with reduced maintenance will be obtained compared with conventional travelling nut mechanisms
  • two bearing assemblies 48a and 48b are used for safety reasons For example, if assembly 48a fails due to loss of ball bearings 50, assembly 48b drops down towards assembly 48b until collars 51 and 52 abut Accordingly support of lifting carriage 24 is transferred to assembly 48b therefore stopping lifting carriage 24 from dropping As a result, switch 60 is activated and movement of carriage 24 is limited to lowering only Once carriage 24 is lowered, hoist 10 can then be repaired

Abstract

Cette invention se rapporte à un élévateur à colonnes, qui sert à soulever des véhicules et autres objets similaires en vue de leur entretien et qui comprend une paire de colonnes droites (11, 12) placées en support sur une base (14), laquelle comporte une paire de roulettes (18) et des roues à pneumatiques orientables (19). Un moteur d'entraînement électrique (43) est monté sur ces colonnes (11, 12) et il est couplé à un arbre d'entraînement à pas de vis (37) s'étendant vers le bas entre les colonnes (11, 12). Un chariot coulissant (24) est fixé en porte à faux aux colonnes (11, 12), de façon à pouvoir se déplacer verticalement le long desdites colonnes. L'arbre (37) est couplé au chariot (24) par une paire d'ensembles paliers de roulement à billes en recirculation (48a, 48b), dont la partie supérieure soutient, en position normale, la charge placée sur le chariot (24). En cas de défaillance de l'ensemble palier supérieur (48a), la charge est transférée sur l'ensemble palier inférieur (48b) et un commutateur de détection (60) actionne le moteur (43), de façon à faire tourner l'arbre (37) uniquement dans une direction qui fait descendre le chariot (24). L'arbre (37) est suspendu à un palier de poussée supérieur (35) pour éviter qu'il ne ploie sous la charge.
PCT/AU1996/000104 1995-02-28 1996-02-28 Elevateurs a colonnes WO1996026886A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ301619A NZ301619A (en) 1995-02-28 1996-02-28 Column hoist has a column on a base with rollers, an electric drive motor and screw threaded drive shaft supported by the column
AU47092/96A AU696899B2 (en) 1995-02-28 1996-02-28 Column hoists

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN1419A AUPN141995A0 (en) 1995-02-28 1995-02-28 Column hoists
AUPN1419 1995-02-28

Publications (1)

Publication Number Publication Date
WO1996026886A1 true WO1996026886A1 (fr) 1996-09-06

Family

ID=3785776

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000104 WO1996026886A1 (fr) 1995-02-28 1996-02-28 Elevateurs a colonnes

Country Status (3)

Country Link
AU (1) AUPN141995A0 (fr)
NZ (1) NZ301619A (fr)
WO (1) WO1996026886A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011556A1 (fr) * 1997-09-01 1999-03-11 Pronomic Ab Chariot-elevateur
BE1014853A3 (nl) * 2002-05-30 2004-05-04 Druyts Lodewijk Karel Inrichting voor het op-en afladen van een
US7823861B2 (en) 2005-06-08 2010-11-02 Mojack Distributors, Llc Small vehicle jack apparatus
WO2010129081A1 (fr) * 2009-05-05 2010-11-11 Mojack Distributors, Llc Appareils et procédés pour un vérin de véhicule amélioré ayant un ensemble vérin à vis
US8141850B2 (en) 2008-10-24 2012-03-27 Mojack Distributors, Llc Apparatuses and methods for an improved vehicle jack
GB2493487A (en) * 2011-05-12 2013-02-13 Niftylift Ltd Lifting Machine
US8448920B2 (en) 2005-06-08 2013-05-28 Mojack Distributors, Llc Methods and apparatuses for a small vehicle jack apparatus
CN103434981A (zh) * 2013-09-02 2013-12-11 安徽德摩新能源叉车股份有限公司 一种电动驳运叉车结构
WO2014169750A1 (fr) * 2013-04-19 2014-10-23 无锡震达机电有限公司 Cadre de levage de pneu
US9074636B2 (en) 2013-02-04 2015-07-07 Mojack Distributors, Llc Clutch assembly
CN105293366A (zh) * 2015-11-24 2016-02-03 重庆红亿机械有限公司 架车机导轨与托架机构的连接结构
CN111825003A (zh) * 2020-07-17 2020-10-27 胡佩珍 一种大直径圆形管液压夹持式升降机构
CN113292020A (zh) * 2020-02-24 2021-08-24 江苏航天大为科技股份有限公司 一种隧道内的设备安装平台

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU435403A1 (ru) * 1972-04-29 1974-07-05 Самотормозящий шариковинтовой механизм
DE2739150A1 (de) * 1977-08-31 1979-03-15 Betzing Ullrich Stellgeraet, vorzugsweise als wagenheber
DE2914756A1 (de) * 1979-04-11 1980-10-16 Star Kugelhalter Gmbh Dt Kugelschraubtrieb
SU1260614A1 (ru) * 1985-03-05 1986-09-30 Хабаровский политехнический институт Шариковый винтовой механизм
EP0538991A1 (fr) * 1991-10-23 1993-04-28 Masao Moriyama Système à vis avec billes
JPH06191691A (ja) * 1992-12-24 1994-07-12 Ono Kikoushiyo:Kk スリッタ用コイルリフタ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU435403A1 (ru) * 1972-04-29 1974-07-05 Самотормозящий шариковинтовой механизм
DE2739150A1 (de) * 1977-08-31 1979-03-15 Betzing Ullrich Stellgeraet, vorzugsweise als wagenheber
DE2914756A1 (de) * 1979-04-11 1980-10-16 Star Kugelhalter Gmbh Dt Kugelschraubtrieb
SU1260614A1 (ru) * 1985-03-05 1986-09-30 Хабаровский политехнический институт Шариковый винтовой механизм
EP0538991A1 (fr) * 1991-10-23 1993-04-28 Masao Moriyama Système à vis avec billes
JPH06191691A (ja) * 1992-12-24 1994-07-12 Ono Kikoushiyo:Kk スリッタ用コイルリフタ

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 87-148809/21, Class Q64; & SU,A,1 260 614 (KHABAROVSK POLY), 30 September 1986. *
DERWENT ABSTRACT, Accession No. F2952W/20; & SU,A,435 403 (BARRIKADY DRILL) 21 November 1974. *
DERWENT ABSTRACT, Accession No. K2625C/43, Class Q64; & DE,A,2 914 756 (DEUTSCHE STAR KUGEL), 16 October 1980. *
PATENT ABSTRACTS OF JAPAN, M-1688, pg 100; & JP,A,06 191 691 (ONO KIKOUSHIYO K.K.), 12 July 1994. *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6435309B1 (en) 1997-09-01 2002-08-20 Pronomic Ab Lifting carriage
WO1999011556A1 (fr) * 1997-09-01 1999-03-11 Pronomic Ab Chariot-elevateur
BE1014853A3 (nl) * 2002-05-30 2004-05-04 Druyts Lodewijk Karel Inrichting voor het op-en afladen van een
US8448920B2 (en) 2005-06-08 2013-05-28 Mojack Distributors, Llc Methods and apparatuses for a small vehicle jack apparatus
US7823861B2 (en) 2005-06-08 2010-11-02 Mojack Distributors, Llc Small vehicle jack apparatus
US9359179B2 (en) 2005-06-08 2016-06-07 Mojack Distributors, Llc Methods and apparatuses for a small vehicle jack apparatus
US8814141B2 (en) 2005-06-08 2014-08-26 Mojack Distributors, Llc Methods and apparatuses for a small vehicle jack apparatus
US8141850B2 (en) 2008-10-24 2012-03-27 Mojack Distributors, Llc Apparatuses and methods for an improved vehicle jack
US8251349B2 (en) 2008-10-24 2012-08-28 Mojack Distributors, Llc Apparatuses and methods for an improved vehicle jack
US8387953B2 (en) 2009-05-05 2013-03-05 Mojack Distributors, Llc Apparatuses and methods for an improved vehicle jack having a screw jack assembly
WO2010129081A1 (fr) * 2009-05-05 2010-11-11 Mojack Distributors, Llc Appareils et procédés pour un vérin de véhicule amélioré ayant un ensemble vérin à vis
GB2493487A (en) * 2011-05-12 2013-02-13 Niftylift Ltd Lifting Machine
US9074636B2 (en) 2013-02-04 2015-07-07 Mojack Distributors, Llc Clutch assembly
WO2014169750A1 (fr) * 2013-04-19 2014-10-23 无锡震达机电有限公司 Cadre de levage de pneu
CN103434981A (zh) * 2013-09-02 2013-12-11 安徽德摩新能源叉车股份有限公司 一种电动驳运叉车结构
CN103434981B (zh) * 2013-09-02 2016-02-03 安徽德摩新能源叉车股份有限公司 一种电动驳运叉车结构
CN105293366A (zh) * 2015-11-24 2016-02-03 重庆红亿机械有限公司 架车机导轨与托架机构的连接结构
CN113292020A (zh) * 2020-02-24 2021-08-24 江苏航天大为科技股份有限公司 一种隧道内的设备安装平台
CN111825003A (zh) * 2020-07-17 2020-10-27 胡佩珍 一种大直径圆形管液压夹持式升降机构

Also Published As

Publication number Publication date
AUPN141995A0 (en) 1995-03-23
NZ301619A (en) 1998-11-25

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