[go: up one dir, main page]

WO2003011737A1 - Systeme d'elevation pour echafaudages - Google Patents

Systeme d'elevation pour echafaudages Download PDF

Info

Publication number
WO2003011737A1
WO2003011737A1 PCT/CA2001/001125 CA0101125W WO03011737A1 WO 2003011737 A1 WO2003011737 A1 WO 2003011737A1 CA 0101125 W CA0101125 W CA 0101125W WO 03011737 A1 WO03011737 A1 WO 03011737A1
Authority
WO
WIPO (PCT)
Prior art keywords
framework
driven shaft
roller assemblies
power driven
tooth
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.)
Ceased
Application number
PCT/CA2001/001125
Other languages
English (en)
Inventor
André ST-GERMAIN
Luc Tessier
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/CA2001/001125 priority Critical patent/WO2003011737A1/fr
Priority to CNA01823514XA priority patent/CN1538930A/zh
Publication of WO2003011737A1 publication Critical patent/WO2003011737A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure

Definitions

  • the present invention relates to a raising system for a scaffolding platform, an elevator cage and the like.
  • Another object of the present invention is to provide a rack and pinion system into which the pinion has a friction free engagement with the rack teeth so as to eliminate any necessity of applying grease to the rack teeth and to the pinion.
  • Another object to the present invention is to provide a rack and pinion raising system which is capable of raising important loads of one thousand pounds or more.
  • the present invention is directed to a raising system for scaffolding platforms, elevator cages and the like comprising an upright stationary beam member, a series of equally spaced similar rack teeth secured to said beam member and laterally projecting from the same, each rack tooth having a substantially horizontal, straight top face, a tip and an under face, and a framework guided for vertical up and down movement along said beam member, a pinion device mounted on said framework and meshing with said rack teeth, said pinion device including a power driven shaft rotatably supported by said framework, spaced from, normal to and extending across said beam member, a pair of spaced parallel radial supports secured to said power driven shaft and a series of parallel idle shafts extending between said supports, equally spaced from one another and equally radially spaced from said power driven shaft, and a cylindrical roller assembly rotatably mounted on each idle shaft, said cylindrical roller assemblies equal diameter and of a length slightly less than the distance between said two supports, said roller assemblies freely rotatable on their respective idle shafts, clearing said under
  • Each roller assembly includes several rollers disposed side by side.
  • the diameter of said roller assemblies is smaller than the vertical distance between the top face of an underlying tooth and the under face of an overlying adjacent tooth so that a gap is left between the under face of said overlying tooth and a roller assembly in rolling contact with the top face of said underlying tooth.
  • said under face is downwardly sloping in a direction away from said tip.
  • needle bearings are interposed between said idle shafts and said roller assemblies.
  • said under face is downwardly sloping in a direction away from said tip.
  • a sleeve is tightly fitted around said several rollers.
  • the spacing between adjacent roller assemblies and their radial spacing from said power driven shaft are such that adjacent roller assemblies successively roll over the top faces of adjacent teeth.
  • said power driven shaft has two opposite ends, each protruding from said framework and further including a pair of hydraulic motors respectively drivingly connected to said opposite ends.
  • the present invention is also directed to the combination of the above defined raising system with a scaffolding incl ⁇ ding a multi-sided tower, a sleeve member mounted around said tower for guided up and down movement and a work platform supported by said sleeve member, said stationary beam member secured to one side of a said tower, said framework secured to and outwardly protruding from said sleeve member at said one side of said tower, and further including a safety lever pivoted to said framework and counterweighted to ride over said teeth tips and automatically pivot over each adjacent rack tooth during said upward movement of said sleeve member.
  • Figure 1 is a partial elevation, partially in section, of a scaffolding system including a tower with a rack, a sleeve member guided up and down along the tower and a pinion meshing with the rack teeth;
  • Figure 2 is a plan section taken along line 2-2 of Fig. 1 ;
  • Figure 3 is a perspective view of the pinion;
  • Figure 4 is a side elevation of the same
  • Figure 5 is a top plan view of the same
  • Figure 6 is a partially exploded perspective view of one roller assembly
  • Figure 7 is a longitudinal section of the assembly of Fig. 6;
  • Figures 8, 9 and 10 are partial side views showing how the roller assemblies of the pinion roll on the rack teeth.
  • a tower 2 spaced from and secured to wall W by vertically spaced wall anchors 4.
  • a sleeve member 6 partially surrounds tower 2 leaving an opening 8 facing wall W so that sleeve member 6 may clear the wall anchors 4 during its up and down movement along tower 2.
  • Sleeve member 6 is guided along tower 2 by guiding rollers 10 rolling over the corner posts 11 of tower 2.
  • Both tower 2 and the sleeve member 6 preferably have a square cross-section. Hooks 12 are secured to the sleeve member 6 at its side normal to the wall W in order to suspend a work platform (not shown) used by the workmen such as bricklayers.
  • the raising system of the invention includes a vertical beam 14 secured to tower 2 on its side opposite to the wall anchors 4.
  • Rack teeth 16 are welded or otherwise rigidly secured to or integral with vertical beam 14 at equal distances.
  • Each rack tooth 16 has a top horizontal straight face 18, a curved under face 20 sloping downwardly away from the tip 22 of the tooth 16.
  • a pinion device generally indicated at 24 is adapted to mesh with the rack teeth 16.
  • Pinion device 24 is mounted on a framework 26 which is rigidly secured to the sleeve member 6. This framework 26 extends on the side of the sleeve member 6 away from wall anchors 4 and includes a shelf 28 and braces 30 secured to sleeve member 6.
  • a housing 32 is supported on shelf 28 to partially enclose the pinion device 24 and the driving motors therefor.
  • the driving motors are energized by a proper source of energy, such as an internal combustion engine driving a hydraulic pump, contained in a separate structure 29 preferably secured underneath the shelf 28.
  • the pinion device 24 comprises a power driven shaft 34 which rotates in journals 36 secured to the braces 30. Power driven shaft 34 has its opposite ends protruding from the respective journals 36 to be directly connected each to a hydraulic motor 38.
  • Pinion 24 includes a pair of equal diameter discs 40 surrounding and secured to power driven shaft 34.
  • Each of the discs 40 supports a plurality of idle shafts 46 radially equally spaced from driven shaft 34 and equally spaced from each other.
  • Each idle shaft 46 has threaded ends and adjacent shoulders 48 against which the two discs 40 abut to keep at a set distance apart.
  • Nuts 50 secure discs 40 to idle shaft 46.
  • a roller assembly 52 is rotatably mounted on each idle shaft 46 with the interposition of washers 54.
  • Each roller assembly 52 preferably consists of three rollers 56 disposed side by side and each mounted on a needle bearing 58.
  • a sleeve 60 tightly surrounds the assembly of the three rollers 56.
  • roller assemblies are carried by discs 40 and partially protrude from the same as shown in Fig. 4.
  • sleeve 60 illustrated in Figs. 6 and 7 is absent since it is not essential and could be dispensed with.
  • each roller assembly 52 is smaller than the vertical distance between the top face 18 of an underlying tooth 16 and the under face 20 of an underlying tooth 16 so that a gap is left between the under face 20 of a tooth 16 and the roller assembly 52 in contact with the top face 18 of an adjacent underlying tooth 16.
  • each roller assembly 52 since the rack and tooth pinion is always subjected to gravity, each roller assembly 52 only contacts the top face 18 of the successive rack tooth 16 and never has to contact the under face 20 of said tooth whether the sleeve member 6 is raising or going down along the tower 2.
  • safety lever 62 which is horizontally pivoted under shelf 28 by a pivot 64 and which is engageable with the top face 18 of successive teeth 16 under the action of counterweight 66 secured to the lever 62 and extending in a direction opposite to the teeth 16.
  • safety lever 62 will slide over the rack tooth tips 22 and automatically take a position overlying the tooth 16.
  • means are provided to retain the lever 62 in a position to clear the successive teeth 16.
  • an arm 68 is rigidly secured to counterweight 66 at one end, and is adapted to receive a handle 70 at the other end. The arm 68 extends through an opening 67 in the shelf 28, and the handle 70 is lifted up by a workman and held in that position to make the lever 62 to clear the teeth 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

La présente invention concerne un système d'élévation pour échafaudages, cabines d'ascenseur et analogues, qui comprend un élément poutre verticale fixe (14) depuis lequel font saillie des dents de crémaillère (16) similaires espacées verticalement à des intervalles égaux, chaque dent (16) possédant une face supérieure droite sensiblement horizontale (18). Le système comprend : une charpente (26) guidée dans un mouvement ascendant et descendant le long de l'élément poutre (14) ; un arbre entraîné par moteur (34) soutenu rotatif par la charpente (26) et portant des supports radiaux espacés (40) ; une série d'arbres de renvoi parallèles (46) s'étendant entre les supports (40), espacés à des intervalles égaux l'un de l'autre et espacés radialement à une distance égale de l'arbre entraîné (34) ; et une pluralité d'ensembles de galets cylindriques (52) montés rotatifs sur les arbres de renvoi (46) et aptes à coopérer par roulements successifs avec les faces supérieures (18) des dents (16) au cours du mouvement ascendant ou descendant de la charpente (26). Chaque ensemble de galets (52) comprend plusieurs galets (56) coaxialement disposés côte à côte.
PCT/CA2001/001125 2001-08-03 2001-08-03 Systeme d'elevation pour echafaudages Ceased WO2003011737A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CA2001/001125 WO2003011737A1 (fr) 2001-08-03 2001-08-03 Systeme d'elevation pour echafaudages
CNA01823514XA CN1538930A (zh) 2001-08-03 2001-08-03 用于脚手架的提升系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2001/001125 WO2003011737A1 (fr) 2001-08-03 2001-08-03 Systeme d'elevation pour echafaudages

Publications (1)

Publication Number Publication Date
WO2003011737A1 true WO2003011737A1 (fr) 2003-02-13

Family

ID=4143157

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001125 Ceased WO2003011737A1 (fr) 2001-08-03 2001-08-03 Systeme d'elevation pour echafaudages

Country Status (2)

Country Link
CN (1) CN1538930A (fr)
WO (1) WO2003011737A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102747831B (zh) * 2012-06-19 2015-02-18 张玉家 套轨式电动附着升降脚手架
CN107055285A (zh) * 2017-04-27 2017-08-18 董胜青 一种轨道齿轮箱式升降车
CN110719881B (zh) * 2017-06-12 2021-01-29 三菱电机株式会社 轿厢门装置的维护用脚手架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325790A (en) * 1992-06-26 1994-07-05 Heinrich Mack Gmbh & Co. Rollback-preventing apparatus for a rail vehicle
JPH06229427A (ja) * 1992-12-04 1994-08-16 Yoshitada Etsuhara 転動噛み合い駆動装置の回転駆動車
JPH08277079A (ja) * 1995-04-06 1996-10-22 Etsuhara Yoshitada 工事用エレベータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325790A (en) * 1992-06-26 1994-07-05 Heinrich Mack Gmbh & Co. Rollback-preventing apparatus for a rail vehicle
JPH06229427A (ja) * 1992-12-04 1994-08-16 Yoshitada Etsuhara 転動噛み合い駆動装置の回転駆動車
JPH08277079A (ja) * 1995-04-06 1996-10-22 Etsuhara Yoshitada 工事用エレベータ

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 607 (M - 1707) 18 November 1994 (1994-11-18) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) *

Also Published As

Publication number Publication date
CN1538930A (zh) 2004-10-20

Similar Documents

Publication Publication Date Title
US6311800B1 (en) Raising system for scaffolding and the like
US5636705A (en) Apparatus for moving a work platform along a rail
CN1930075B (zh) 电梯系统
JP4922867B2 (ja) エレベータの工事作業用足場、及びそれを用いた足場の設置方法
EP0449933B1 (fr) Elevateur a vis
EP0613853A2 (fr) Grue équipée d'un ascenseur d'entretien
WO2003011737A1 (fr) Systeme d'elevation pour echafaudages
US20050039984A1 (en) Scaffold lift system
US20110094830A1 (en) Vehicle and object portable lift
CA2354674A1 (fr) Systeme de levage pour echafaudages et dispositifs semblables
CN113086812B (zh) 一种吊笼可自动调平的升降机
JP2868747B1 (ja) 昇降機
JPH0620925B2 (ja) クレーンの昇降キャレッジ駆動装置
CN107986202B (zh) 一种防坠装置、防坠机构及升降设备
DE3542220A1 (de) Aufzugsanlage zum vertikalen transport von personen und lasten mit neben dem aufzugsschacht angeordneten antriebsgetriebe, dadurch gekennzeichnet, dass als tragmittel fuer den aufzugsfahrkorb ketten verwendet werden
RU2225801C2 (ru) Подъемно-транспортное устройство
CN210126975U (zh) 一种电缆提升架
EP1097316B1 (fr) Appareil avec vis a rouleaux coniques et procede de commande
CN221821797U (zh) 一种可旋转的大力举升设备
CN218539014U (zh) 一种安全性高的提梁机
CN219990834U (zh) 一种电梯轿顶检修安全保护装置
CN215262397U (zh) 防坠试验安装工装
KR0137096Y1 (ko) 주차설비의 파레트 낙하방지 및 리프트 위치고정 장치
KR20210042676A (ko) 전동식 호이스트 선회장치
CN218406655U (zh) 一种施工用安全防坠装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CH CN CO CR CU CZ DE DK DZ EC EE ES FI GB GD GE GH GM HR ID IL IN IS JP KE KG KP KR KZ LC LK LS LT LU LV MA MD MG MK MN MW MZ NO NZ PL PT RO RU SD SE SG SI SL TJ TM TR TT TZ UA UG UZ VN YU

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZW AM AZ BY KG KZ MD TJ TM AT BE CH CY DE DK ES FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW MR NE SN TD TG

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

Ref document number: 2001823514X

Country of ref document: CN

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: JP