EP0052572A2 - Hebevorrichtung, insbesondere Seilflasche - Google Patents

Hebevorrichtung, insbesondere Seilflasche Download PDF

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Publication number
EP0052572A2
EP0052572A2 EP81440025A EP81440025A EP0052572A2 EP 0052572 A2 EP0052572 A2 EP 0052572A2 EP 81440025 A EP81440025 A EP 81440025A EP 81440025 A EP81440025 A EP 81440025A EP 0052572 A2 EP0052572 A2 EP 0052572A2
Authority
EP
European Patent Office
Prior art keywords
sheave
fixed sheave
rope
fixed
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.)
Ceased
Application number
EP81440025A
Other languages
English (en)
French (fr)
Other versions
EP0052572A3 (de
Inventor
Edouard Singer
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
Publication of EP0052572A2 publication Critical patent/EP0052572A2/de
Publication of EP0052572A3 publication Critical patent/EP0052572A3/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/04—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion incorporating energy absorbing means

Definitions

  • the invention relates to a lifting device, in particular a muffle.
  • a lifting device in particular a muffle consisting of a yoke provided at its upper part with a hooking member, an axis and a sheave, movable on this axis and placed between the two wings of the yoke characterized in that the axis comprises at least one fixed sheave arranged outside the yoke and capable of cooperating, in the event of use in descenders and / or in lift, with the mobile sheave by means of notches made in the wing of the yoke interposed between the mobile sheave and the fixed sheave (s) and allowing the passage of the rope.
  • the fixed sheave has a conical internal flank whose large base is located on the side of the outer periphery of the fixed sheave and whose small base is located on the side of the core.
  • This device provides an elastomer cover fitted on the fixed axis and coming to bear against the fixed sheave.
  • the hood of circular shape, has a rim directed towards the vertical wing of the yoke. This rim maintains the rope on the fixed sheave.
  • French patent No. 2,456,704 discloses improvements made to the lifting device mentioned above consisting of a shoe mounted on a sliding plate and cooperating with the mobile sheave to immobilize the latter.
  • This shoe made of a non-slip material, has, at its upper part, a semi-toroidal boss coming, under the action of the force applied on the rope, to be introduced into the groove of the mobile sheave.
  • This skate has a lower part in the shape of a half sheave provided with a groove adapted to the rope used.
  • the second fixed sheave comprises two flanges with variable spacing, one of which is integral with the external face of the cover applied against the first fixed sheave and the other of which, sliding on the axis, is resiliently recalled for a pinch of the free strand of the cord between the two flanges.
  • Each flange has a flank frustoconical leading, on the one hand, to the external periphery of the flange and, on the other hand, to a shoulder facing and applying one against the other.
  • the movable flange has a housing formed in its outer face in which is placed an elastic element ensuring the elastic return of the movable flange to apply it against the fixed flange.
  • the present invention aims to improve the safety of the device.
  • the invention solves the problem consisting, on the one hand, in annihilating any sliding of the rope which would have simply been placed in the groove of the second fixed sheave by the user without being there wedged while making it impossible to mishandle the rope and, on the other hand, to avoid that the user's hand, drawn by the rope, is trapped between the rope and the bottom of the throat of the second fixed sheave.
  • the lifting device in particular the muffle 1, comprises a yoke 2 formed by two vertical wings 3, 4. Their upper end 5, 6 comprises a head 7, 8 in which a transverse groove 9 is made.
  • this groove 9 is housed at the end 10, 11 of a cross member 12 held by pins 13, 14 including one of the extremi tees is provided with a head 15 and the other end of which has a locking element 16 pivoting about a hinge pin 17.
  • a vertical hole 18 is made in the cross-member 12 serving as a passage for the axis 19 of a handle 20.
  • This has an orifice 21 in which the lower curved end 22 of a hook 23 is engaged.
  • a sleeve 24 is threaded through which an axis 25 ensures the connection between said sleeve 24 and a locking element 26. The latter cooperates with the tip 27 of the hook 23 to prevent the rope from coming out of the loop 28 of said hook 23.
  • the two vertical wings 3, 4 are crossed by a horizontal axis 29, one of the ends 30 of which is provided with a thread 31 on which is screwed a nut 32 housed in a recess 33 produced in a boss 34 integral with the external face 35 of one of the vertical wings 4.
  • a first fixed sheave 43 is applied to the external face 42 of the other vertical wing 3, the face directed towards the vertical wing 3 has a tongue 44 threaded into a groove 45 formed in the external face 42.
  • the first fixed sheave 43 cannot pivot about the horizontal axis 29 passing right through said fixed sheave 43.
  • the latter has a semi-toric groove 46 in which the cord is placed.
  • the fixed sheave 43 is kept applied against the external face 42 of the vertical wing 3 by a shoulder 47 of the horizontal axis 29.
  • This fixed sheave 50 is also threaded on the horizontal axis 29.
  • This fixed sheave 50 has two flanges 51, 52 constituting means for blocking the rope.
  • the outside of these flanges 51, 52 is made of polyester reinforced with glass fibers while the inside is of hard rubber.
  • the inner profile 53, 54 of the two flanges 51, 52 is in the form of a trapezoidal groove 55.
  • the flange 51 directed towards the elastomer cover 49, is fixed and it is made integral with said cover 49 by means of a tongue 56 projecting from the face 57 of the flange 51, this tongue 56 being housed in a groove 58 made in the external face 59 of the cover 49.
  • the second flange 52 slides on the horizontal axis 29 and it is kept applied against the flange 51 by the action of elastic elements 60, 61.
  • These elastic elements 60, 61 threaded on the horizontal axis 29, are trapped between the bottom 62 of a recess 63 formed in the external face 64 of the flange sliding 52, and a guide 65 sliding in a recess 66 leading to the recess 63.
  • This guide 65 has a countersunk hole 67 in which the head 68 of the horizontal axis 29 is embedded.
  • a cord synthetic can self-lock under the action of the pull of the suspended weight ndu to the opposite strand.
  • the slip is practically zero due to the non-slip rubber flange 52 and, at the slightest pull on the opposite strand, a vigorous and instantaneous self-locking a location. In any case, the rope can not slide by sliding.
  • the guide 65 preferably made of cast aluminum, mounted on the external face 64 of the sliding flange 52 of the second fixed sheave 50 comprises two wings 69, 70 provided with a notch 71, 72, these two wings 69, 70 being able to be housed in the recess 66 of the recess 63.
  • This guide 65 obliges the user, when the rope is released, to perform this maneuver in the winding plane of the rope. If the user at the time of the maneuver tended to pull the rope towards himself, that is to say in a vertical position relative to the second fixed sheave 50, the rope would automatically slide into a notch 71, 72 and , in any case, cannot escape by uncontrolled sliding.
  • Two guides are fixed on the outer face 48 of the first fixed sheave 43 73, 74 preferably made of aluminum. These two guides 73, 74 form, with the semi-toric groove 46 of the first fixed sheave, 43, a sheath for guiding the rope with, as an opening, the minimum necessary for the passage of a rope of a given diameter.
  • the muffle 1 can be brought to perform a pendulum movement when the weight attached to the opposite strand of the rope is pushed into the descent position.
  • the rope despite untimely pushing and twisting, remains in the guide sleeve formed by the two guides 73, 74 and the bottom of the semi-toric groove 46 of the first fixed sheave 43. In no case can the rope come out of the braking system.
  • the outer face 35 of the vertical wing 4 has a second boss 75 in which a recess 76 is provided which houses a nut 77 screwed onto the threaded end 78 of a lower horizontal axis 79.
  • a brake shoe 80 On this horizontal axis 79 is threaded a brake shoe 80, one of the outer faces 81 of which has a tongue 82 engaged in a groove 83 produced in the inner face 37 of the vertical wing.
  • the brake shoe 80 made of a non-slip material such as rubber, is mounted on a glass fiber plate 84.
  • the glass fiber plate 84 and the brake shoe 80 have vertical lights 85, 86 in which pass the horizontal axis 79. These lights 85, 86 allow the vertical movement of the plate 84 and the brake shoe 80.
  • the brake shoe 80 has a groove 90 adapted to the rope used which, it , is held in this groove by the curved end 91 of the plate 84.
  • the head 92 of the horizontal axis 79 slides in a milled opening 93 produced in a stop flange 94, the upper end 95 of which is wedged between the first fixed sheave 43 and the external face 42 of the vertical wing 3.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Emergency Lowering Means (AREA)
  • Pulleys (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Braking Arrangements (AREA)
EP81440025A 1980-11-19 1981-10-20 Hebevorrichtung, insbesondere Seilflasche Ceased EP0052572A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8024713A FR2494247A2 (fr) 1980-11-19 1980-11-19 Dispositif de levage en particulier moufle
FR8024713 1980-11-19

Publications (2)

Publication Number Publication Date
EP0052572A2 true EP0052572A2 (de) 1982-05-26
EP0052572A3 EP0052572A3 (de) 1984-01-04

Family

ID=9248205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81440025A Ceased EP0052572A3 (de) 1980-11-19 1981-10-20 Hebevorrichtung, insbesondere Seilflasche

Country Status (5)

Country Link
US (1) US4466599A (de)
EP (1) EP0052572A3 (de)
CA (1) CA1172625A (de)
ES (1) ES8300634A1 (de)
FR (1) FR2494247A2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604988A1 (fr) * 1986-10-01 1988-04-15 Petzl Fernand Dispositif a poulie de securite pour la descente et la remontee de personnes ou de charges le long d'une corde
AU617484B2 (en) * 1988-06-22 1991-11-28 CQ Inspection & Maintenance Services Pty Ltd Pulley block assembly
RU2266860C1 (ru) * 2004-06-01 2005-12-27 Государственное образовательное учреждение высшего профессионального образования "Уральский государственный технический университет-УПИ" Безопасный канатный полиспаст

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387186A (en) * 1993-10-15 1995-02-07 Edland; Mitchell R. Self-standing traction apparatus
US5634873A (en) * 1994-09-08 1997-06-03 Strong River Corporation Hamstring stretching device and method
US7419138B1 (en) * 2007-02-23 2008-09-02 Cmc Rescue, Inc. Self-camming pulley
CN101549191B (zh) * 2008-04-02 2012-05-30 俞关清 高楼救生缓降器
US20130043450A1 (en) * 2011-08-19 2013-02-21 Russ Kommer Lifting or locking system and method
US9173386B2 (en) * 2012-08-13 2015-11-03 Rupp Marine, Inc. Outrigger line lock positioning device
CN104724607A (zh) * 2015-01-29 2015-06-24 徐工集团工程机械股份有限公司 一种钢丝绳脱槽防护装置及其安装方法
CN110190557B (zh) * 2019-07-04 2024-08-20 广西送变电建设有限责任公司 一种封网装置及其封网滑车

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR442199A (fr) * 1911-04-26 1912-08-26 Charles Dewever Treuil à friction pour sauvetage en cas d'incendie
US1130713A (en) * 1914-11-27 1915-03-09 Walter J Daly Clothes-line support.
GB287907A (en) * 1927-03-29 1928-05-31 Ane Pieter Schat Improvements in pulley blocks
GB310395A (en) * 1928-01-24 1929-04-24 Walter Burrows Improvements in, and relating to rope rollers or pulleys for haulage work
US2623732A (en) * 1949-06-18 1952-12-30 Kenneth F Morgan Pulley winch
GB1048303A (en) * 1964-04-27 1966-11-16 William Thomas Leishman Emergency lowering devices
DE2342244A1 (de) * 1972-07-31 1975-02-27 Heri Dipl Ing Schuller Abseilgerät zur rettung aus feuersgefahr
DE2237622C3 (de) * 1972-07-31 1975-02-20 Heri Dipl.-Ing. 8124 Seeshaupt Schuller Abseilgerät zur Rettung aus Feuersgefahr
DE2258424A1 (de) * 1972-11-29 1974-05-30 Heri Dipl-Ing Schuller Einseil-abseilgeraet
DE2432716A1 (de) * 1974-02-19 1976-01-29 Schuller Geb Schlenker Heidi Verfahren und vorrichtung zum auf- und abseilen von personenaufnahmemitteln
FR2398690A1 (fr) * 1977-07-27 1979-02-23 Singer Edouard Dispositif de levage en particulier moufle
FR2476050B2 (fr) * 1977-07-27 1985-06-14 Singer Edouard Dispositif de levage en particulier moufle
DE3066740D1 (en) * 1979-05-18 1984-04-05 Edouard Singer Lifting device, especially pulley block

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604988A1 (fr) * 1986-10-01 1988-04-15 Petzl Fernand Dispositif a poulie de securite pour la descente et la remontee de personnes ou de charges le long d'une corde
AU617484B2 (en) * 1988-06-22 1991-11-28 CQ Inspection & Maintenance Services Pty Ltd Pulley block assembly
RU2266860C1 (ru) * 2004-06-01 2005-12-27 Государственное образовательное учреждение высшего профессионального образования "Уральский государственный технический университет-УПИ" Безопасный канатный полиспаст

Also Published As

Publication number Publication date
ES507247A0 (es) 1982-11-01
EP0052572A3 (de) 1984-01-04
ES8300634A1 (es) 1982-11-01
US4466599A (en) 1984-08-21
FR2494247A2 (fr) 1982-05-21
CA1172625A (fr) 1984-08-14

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