EP0326910A1 - Hebebock - Google Patents

Hebebock Download PDF

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Publication number
EP0326910A1
EP0326910A1 EP89101177A EP89101177A EP0326910A1 EP 0326910 A1 EP0326910 A1 EP 0326910A1 EP 89101177 A EP89101177 A EP 89101177A EP 89101177 A EP89101177 A EP 89101177A EP 0326910 A1 EP0326910 A1 EP 0326910A1
Authority
EP
European Patent Office
Prior art keywords
strip
turns
rotor
telescopic tube
central axis
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.)
Granted
Application number
EP89101177A
Other languages
English (en)
French (fr)
Other versions
EP0326910B1 (de
Inventor
Pierre Gagnon
Pierre Laforest
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 AT89101177T priority Critical patent/ATE67464T1/de
Publication of EP0326910A1 publication Critical patent/EP0326910A1/de
Application granted granted Critical
Publication of EP0326910B1 publication Critical patent/EP0326910B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • 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

Definitions

  • This invention relates to telescopic tubes, more specifically to be used as thrust cylinders.
  • Single acting telescopic hydraulic cylinders can be considered push cylinders.
  • When used as a lifting device for example when several of these cylinders are used to lift a portion of the floor of a theater stage, it is necessary to make significant excavations in the ground to receive such cylinders in their portions lower ends.
  • the general object of the present invention is to provide a telescopic tube, which, for a given extension stroke, occupies a minimum length when in the retracted position.
  • Another object of the present invention is to provide a telescopic tube used as a jack push which is of simple mechanical construction and which can exert a very high push force.
  • Another object of the present invention is that there is provided a thrust cylinder more particularly intended to be used as a lifting device or jack for lifting and lowering heavy loads.
  • the telescopic tube comprises a first annular strip wound helically around a central axis with its turns transversely at right angles to said central axis and capable of assuming a retracted stowed position, with its turns lying flat against each other , and an elongated position with its turns spaced apart from each other in the direciton of said central axis, a second strip wound on itself, with its turns transversely parallel to said central axis, and capable of assuming a retracted spiral position with its turns engaged in each other and an elongated position with its turns forming a helix around said central axis and generally also radially spaced therefrom to form a tube, said first and second strips, when in the retracted position, being in positions respective as they are released from each other, spacing means for successively spacing the towers of said first strip, drive means for producing a relative rotation of said first strip and said spacing means around said central axis, and guide means for inserting the turns of the second strip between
  • Said spacing means preferably comprise support means forming a helix around said central axis, which can be inserted between two successive turns of said first strip and which abuts against one of said turns.
  • the second strip has an unconstrained radius of curvature approximately equal to that of the elongated tube. This allows easier insertion of the second strip between the turns of the first strip.
  • said drive means comprise a motorized rotor capable of rotating around said central axis on a base, and surrounding the first retracted strip.
  • Said support means are fixed inside said rotor and the retracted portion of said second strip is carried by said rotor on the outside thereof.
  • Said guide means are carried on the outside of said rotor.
  • the positioning means are carried by the turns of the first strip and can be engaged by the turns of the second strip to place these latter turns transversely to the turns of the first strip.
  • the two bands and the support means are arranged on the outside of the motorized rotor.
  • FIG. 1 shows two lifting jacks or jacks according to the invention, generally identified by the number 10, fixed to the ground 12 by their lower ends and to a platform 14 by their upper ends, the jacks 10 lifting or lowering the platform 14.
  • the platform 14 can be a theater stage section, in which case there would be several jacks 10 for lifting these sections in a synchronized manner.
  • each jack 10 of a first embodiment comprises an annular base 16 anchored to the ground 12, by means of L-shaped ground anchoring members, 18, and nuts 20, or any other suitable anchoring means.
  • the peripheral edge of the lower rim 24 forms teeth 28 of toothed wheel all around, meshing with a drive wheel 30 (see FIG. 3) driven in rotation in both directions by a suitable motor, such as a reversible hydraulic motor, not shown.
  • a first annular continuous strip 32 which will henceforth be called the horizontal strip for the specific application shown, is wound helically and is of such an external diameter that it fits in the rotor 22 and in the base 16 The turns of this horizontal annular band can be successively lifted to create a space between them.
  • the lower end of the horizontal strip 32 simply rests on the floor or the ground G, while its upper head end 34 is fixed under the platform 14 by means not shown.
  • a second strip 36 which will henceforth be called the vertical strip for the particular application described, is wound in a spiral, said strip being continuous, and when in stored condition, located in an annular storage box 38, arranged outside the rotor 22 and supported in rotation relative to said rotor by means of three L-shaped hooks 40 and also spaced from the relative angle point of view (see FIGS. 2 and 3) and fixed to the outside of the rotor 22 by bolts 42 and provided at their outer ends with a free roller 44 supporting the storage box 38 so as to allow its rotation.
  • the hooks 40 can be fixed to the floor G or to the base 16.
  • the coil formed by the vertical strip 36 has a minimum diameter which is larger than the external diameter of the horizontal strip 32, so as to release the horizontal strip when the latter is almost completely stored, or when it is elongated.
  • the radially outer end of the vertical strip 36 need not be fixed to the storage box 38.
  • the radially inner end of the head of the vertical strip 36 passes through a rectangular opening 46 of the rotor 22, at the interior of this rotor, and is bevelled across the width, as shown at 48 in FIG. 2, to be fixed to the underside of the platform 40 by suitable means, such as the member 50 of I-shape in chopped off.
  • the head end 48 fits between the radially inner edges of the member 50, the latter being bevelled along the length as for the head end 48 and being directly fixed under the platform 14. Consequently, the platform will remain level even if the vertical strip 36 projects upward along the propeller, as shown.
  • the rotor 22 includes on its inner surface a series of equidistant free rollers 52, each installed on a horizontal shaft 54, fixed to the rotor by a nut 56.
  • the free rollers 52 are generally equidistant for a complete circle around the inside of the rotor 22 and arranged helically according to the desired pitch of the arrangement of the horizontal strip 32 and the vertical strip 36.
  • the head roller, 52A is aligned longitudinally with the elongated opening 46, it - even inclined according to the step mentioned above.
  • the trailing roller 52B vertically and spaced overhangs the head roller, 52A.
  • the vertical strip While the horizontal strip is raised 32 by rotation of the rotor, and consequently of the rollers 52, along a helix concentric with the central axis of the rotor, the vertical strip is gradually inserted between the adjacent turns of the horizontal strip, so as to gradually create a kind of tube or column. As shown in FIG. 2, the insertion of the vertical strip is facilitated, since the weight of the horizontal strip at the insertion point means that the latter constitutes a gap 60.
  • Means are provided for appropriately positioning the vertical strip between the adjacent turns of the horizontal strip. These means are shown more clearly in FIGS. 4 and 5. At the same time, these means allow the horizontal strip to be stored flat in the retracted position (see FIG. 2).
  • These positioning means comprise a plurality of uprights 62 fitted in a greenhouse in a few of a series of corresponding equidistant orifices 64 formed in the horizontal strip 32, these orifices 64 being equidistant from the external peripheral edge of the horizontal strip 32. As shown in Figure 5, some of these uprights 62 are directed upward, while others are oriented downward; this in order to define both the top edge and the bottom edge of the vertical strip 36, this strip abutting against said amounts.
  • Some of these orifices 64 will not have uprights, so as to be able to receive the uprights of the next adjacent turn of the horizontal strip when the latter is in the retracted position, the projecting portion of the uprights 62 being no longer than the 'thickness of the horizontal strip.
  • the flat storage of the horizontal strip is obtained to store it in a minimum of height.
  • the resulting arrangement is very solid and can bear a very large load, although it remains very stable transversely to its central axis.
  • the thrust cylinder of the invention can have a very long stroke compared to its length when the two bands are in the retracted position.
  • the vertical strip is pre-wound so as to have, when unstressed, a radius of curvature roughly equal to that of the assembled tube. This facilitates the correct insertion of the vertical strip between the turns of the horizontal strip.
  • the magazine or the box 38 is free to rotate around the axis of the tube to allow the insertion of the vertical strip and its removal despite the resulting variation in the internal diameter of the coil formed by the vertical strip of the box 38.
  • FIG. 8 shows the preferred arrangement of the positioning means for positioning the vertical strip transversely and centrally with respect to the horizontal strip.
  • the positioning means shown in FIG. 8, are intended to replace the positioning pins 62 inserted in the orifices 64 of the horizontal strip 32, as shown in FIG. 5.
  • the improved positioning means simply consist of a continuous groove upper and in a lower continuous groove, 70, formed in the opposite main faces of the horizontal strip 72.
  • the grooves are arranged centrally of the width of the horizontal strip 72 and are coaxial and coextensive there. Consequently, the grooves 70 serve to receive the longitudinal edges of the vertical strip 74 in order to appropriately position and retain the latter transversely to the horizontal strip 72.
  • the telescopic tube shown in Figures 6 and 7 comprise a base 76, of cylindrical shape, fixed to a ground plate, 78.
  • a rotor 80 is supported so as to be able to rotate on the cylindrical base 76 by a ball-bearing arrangement, 82.
  • the rotor 80 comprises a cylindrical wall 84 fitted tightly to an end disc 86 .
  • the rotor 80 is motorized by a motor (not shown) via a chain 88 with toothed wheel, driven by a gear wheel 90, the shaft 92 of which is fixed below the disc 86.
  • the chain 88 with toothed wheel passes by openings 94 formed in the cylindrical base 76.
  • the numerous turns of the horizontal strip 72 are stored, when the strip is in the retracted position, on a flange 96 projecting radially outward from the base 76 and fixed to it this. Therefore, the horizontal strip 72 is wound on the outside of the rotor 80.
  • a plurality of rollers 98 are installed on the rotor 80 near its upper edge outside of said rotor around axes directed radially downwards defined by retaining bolts 100.
  • the rollers 98 are of frusto-conical shape so as to support one revolution of the horizontal strip 72 in a transverse horizontal position orthogonal to the central axis of the rotor 80.
  • Each roller 98 has a bevelled edge 102 for engaging the longitudinal inner edge of the horizontal strip 72 and for centering this strip relative to the rotor.
  • the rollers 98 are arranged helically by making a complete turn around the rotor, with the lower head roller identified by 98A and the upper trailing roller identified in 98B relative to the rotation of the rotor when the column or the tube is being 'be raised.
  • the vertical strip 74 is wound into a reel, identified by 104, which is housed in a store or annular box 106 installed freely and so as to be able to rotate on support wheels, 107, 108, and 109 carried by raised arms 110 fixed at their lower ends to the rim 96 towards the outside of the horizontal strip 72.
  • the annular magazine 106 is of a minimum diameter larger than that of the horizontal strip 72, so that the latter can pass freely through the magazine 106.
  • the magazine is installed for free rotation around the central axis of the tube (or column).
  • the vertical strip 74 is pre-wound or pre-formed to have a radius of curvature, when in an unconstrained condition, approximately equal to the diameter of the tube (or column) when the latter is arranged.
  • the outermost turn of the reel 104 is taken to the top of the magazine and guided to move radially inward along a helix to be inserted between the two adjacent turns of the horizontal strip 72, the vertical strip being guided by a guide roller 112 (see FIG. 7), which is carried so as to be able to rotate by a hook 114 fixed to the rotor 80).
  • the roller 112 can rotate around an axis 116, which is parallel to the central axis of the rotor 80, and the roller is applied against the outer face of the vertical strip 74 to compress it for insertion between two adjacent turns of the horizontal strip 72.
  • a rod 118 is also fixed to the rotor 80 and elongates radially towards the outside of the latter to be applied against the top of the coil 104 in a position immediately before the outermost turn of the coil begins to move up.
  • This rod 118 is used to return the turns of the vertical strip 74 to the appropriate stored position in the magazine 106 when the column is retracted.
  • the guide roller 112 firmly displaces the vertical strip 74 so that it engages the grooves 70 of the adjacent turns of the horizontal strip 72.
  • the highest end of the column can be defined by a push plate 120, which is fixed to the uppermost turn of the vertical strip 74, this last turn being bevelled so that the plate 120 is orthogonal to the 'central axis of the column (or tube).
EP89101177A 1988-02-02 1989-01-24 Hebebock Expired - Lifetime EP0326910B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89101177T ATE67464T1 (de) 1988-02-02 1989-01-24 Hebebock.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15165088A 1988-02-02 1988-02-02
US151650 1988-02-02

Publications (2)

Publication Number Publication Date
EP0326910A1 true EP0326910A1 (de) 1989-08-09
EP0326910B1 EP0326910B1 (de) 1991-09-18

Family

ID=22539675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101177A Expired - Lifetime EP0326910B1 (de) 1988-02-02 1989-01-24 Hebebock

Country Status (8)

Country Link
EP (1) EP0326910B1 (de)
JP (1) JP2566161B2 (de)
CN (1) CN1015354B (de)
AT (1) ATE67464T1 (de)
AU (1) AU602624B2 (de)
BR (1) BR8900438A (de)
DE (1) DE68900261D1 (de)
RU (1) RU1836283C (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588068A1 (de) * 1992-09-16 1994-03-23 HK Systems, Inc. Handhabungssystem und -verfahren für Artikel
CN107381428A (zh) * 2017-08-02 2017-11-24 芜湖昊葛金自动化科技有限公司 一种升降机器人小车
CN110182717A (zh) * 2018-12-29 2019-08-30 宁波星箭航天机械有限公司 一种螺旋升降装置
EP3802398A4 (de) * 2017-05-30 2022-07-06 Erickson, Carl Mechanische linearaktuatoren
CN115806250A (zh) * 2022-11-17 2023-03-17 中建八局第三建设有限公司 一种钢桥梁安装高程调节器

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US7213796B2 (en) * 2004-07-01 2007-05-08 Gestion Laforest Inc. Linear actuator with releasably interlocking bands
DE102007041052A1 (de) * 2007-08-29 2009-03-05 Dürr Assembly Products GmbH Hubvorrichtung
CN102115016A (zh) * 2010-12-01 2011-07-06 郑仙丽 可单根升降复合管
CN104107557A (zh) * 2014-04-28 2014-10-22 郑仙丽 可分离式螺旋管
CN105502236B (zh) * 2016-01-20 2018-05-08 袁�嘉 一种螺旋式升降机构及应用该升降机构的升降装置
CN107458988A (zh) * 2017-08-02 2017-12-12 芜湖昊葛金自动化科技有限公司 一种v型支撑式螺旋升降平台
CN107445102A (zh) * 2017-08-02 2017-12-08 芜湖昊葛金自动化科技有限公司 一种剪叉式螺旋升降平台
CN107620497A (zh) * 2017-08-02 2018-01-23 芜湖昊葛金自动化科技有限公司 一种螺旋舞台升降系统
CN107575051A (zh) * 2017-08-02 2018-01-12 芜湖昊葛金自动化科技有限公司 一种螺旋升降式游泳池系统
CN107352350A (zh) * 2017-08-02 2017-11-17 芜湖昊葛金自动化科技有限公司 一种螺旋直顶式安全升降电梯
CN107381372A (zh) * 2017-08-02 2017-11-24 芜湖昊葛金自动化科技有限公司 一种螺旋升降式起重机系统
CN107386092A (zh) * 2017-08-02 2017-11-24 芜湖昊葛金自动化科技有限公司 一种重载型螺旋升降桥梁系统
CN107386093A (zh) * 2017-08-02 2017-11-24 芜湖昊葛金自动化科技有限公司 一种车辆立体跨越升降廊桥系统
CN107434225A (zh) * 2017-08-02 2017-12-05 芜湖昊葛金自动化科技有限公司 螺旋升降机
CN107458885A (zh) * 2017-08-02 2017-12-12 芜湖昊葛金自动化科技有限公司 一种带轨平移式升降码垛机器人平台
CN107416724A (zh) * 2017-08-02 2017-12-01 芜湖昊葛金自动化科技有限公司 一种竹节式螺旋升降平台
CN107499952A (zh) * 2017-08-02 2017-12-22 芜湖昊葛金自动化科技有限公司 一种基于agv或omv车载式码垛机器人系统
JP7314857B2 (ja) * 2020-04-30 2023-07-26 トヨタ自動車株式会社 伸縮機構及び移動体
AU2021232669A1 (en) * 2021-09-13 2023-03-30 Ulah Engineering Pty Ltd A roller

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241789C (de) * 1910-03-13 1911-12-14
DE547836C (de) * 1929-09-17 1932-03-29 Hans Josef Goebbel Dipl Ing Zusammenlegbarer Hohlstab, insbesondere als Stativfuss, Zelt- oder Faltbootstrebe o. dgl.
US2130993A (en) * 1936-07-02 1938-09-20 Dubiller William Collapsible rod
US2173685A (en) * 1938-01-18 1939-09-19 Grassmann Erich Lifting jack
US2269363A (en) * 1939-03-16 1942-01-06 Hiram A Farrand Collapsible structure
US3016988A (en) * 1959-10-19 1962-01-16 Charles W Browning Lifting device
DE1225839B (de) * 1960-03-10 1966-09-29 Rudolf Vogel Dr Ing Ausfahrbarer Mast und Vorrichtung zu seiner Herstellung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265892A (en) * 1941-04-08 1941-12-09 Bloch Erich Jack
US2946556A (en) * 1959-02-12 1960-07-26 Wayne Iron Works Push-pull actuator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241789C (de) * 1910-03-13 1911-12-14
DE547836C (de) * 1929-09-17 1932-03-29 Hans Josef Goebbel Dipl Ing Zusammenlegbarer Hohlstab, insbesondere als Stativfuss, Zelt- oder Faltbootstrebe o. dgl.
US2130993A (en) * 1936-07-02 1938-09-20 Dubiller William Collapsible rod
US2173685A (en) * 1938-01-18 1939-09-19 Grassmann Erich Lifting jack
US2269363A (en) * 1939-03-16 1942-01-06 Hiram A Farrand Collapsible structure
US3016988A (en) * 1959-10-19 1962-01-16 Charles W Browning Lifting device
DE1225839B (de) * 1960-03-10 1966-09-29 Rudolf Vogel Dr Ing Ausfahrbarer Mast und Vorrichtung zu seiner Herstellung

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588068A1 (de) * 1992-09-16 1994-03-23 HK Systems, Inc. Handhabungssystem und -verfahren für Artikel
US5336032A (en) * 1992-09-16 1994-08-09 Eaton Corporation Article handling system
US5435684A (en) * 1992-09-16 1995-07-25 Hk Systems, Inc. Article handling system
EP3802398A4 (de) * 2017-05-30 2022-07-06 Erickson, Carl Mechanische linearaktuatoren
CN107381428A (zh) * 2017-08-02 2017-11-24 芜湖昊葛金自动化科技有限公司 一种升降机器人小车
CN110182717A (zh) * 2018-12-29 2019-08-30 宁波星箭航天机械有限公司 一种螺旋升降装置
CN115806250A (zh) * 2022-11-17 2023-03-17 中建八局第三建设有限公司 一种钢桥梁安装高程调节器
CN115806250B (zh) * 2022-11-17 2023-10-20 中建八局第三建设有限公司 一种钢桥梁安装高程调节器

Also Published As

Publication number Publication date
EP0326910B1 (de) 1991-09-18
BR8900438A (pt) 1989-09-26
CN1015354B (zh) 1992-02-05
JP2566161B2 (ja) 1996-12-25
DE68900261D1 (de) 1991-10-24
JPH01288599A (ja) 1989-11-20
RU1836283C (ru) 1993-08-23
ATE67464T1 (de) 1991-10-15
CN1037126A (zh) 1989-11-15
AU602624B2 (en) 1990-10-18
AU2887289A (en) 1989-08-03

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