EP0019574B1 - Hebevorrichtung, insbesondere Seilrollenaufzug - Google Patents

Hebevorrichtung, insbesondere Seilrollenaufzug Download PDF

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Publication number
EP0019574B1
EP0019574B1 EP19800440001 EP80440001A EP0019574B1 EP 0019574 B1 EP0019574 B1 EP 0019574B1 EP 19800440001 EP19800440001 EP 19800440001 EP 80440001 A EP80440001 A EP 80440001A EP 0019574 B1 EP0019574 B1 EP 0019574B1
Authority
EP
European Patent Office
Prior art keywords
lifting device
sheave
rope
axis
shoe
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.)
Expired
Application number
EP19800440001
Other languages
English (en)
French (fr)
Other versions
EP0019574A1 (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
Priority claimed from FR7913298A external-priority patent/FR2456704A2/fr
Priority claimed from FR8003533A external-priority patent/FR2476050B2/fr
Application filed by Individual filed Critical Individual
Priority to AT80440001T priority Critical patent/ATE6417T1/de
Publication of EP0019574A1 publication Critical patent/EP0019574A1/de
Application granted granted Critical
Publication of EP0019574B1 publication Critical patent/EP0019574B1/de
Expired 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
    • B66D3/06—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 with more than one pulley
    • B66D3/10—Applications of braking or detent devices

Definitions

  • the invention relates to a lifting device, in particular a muffle.
  • the user actuates the handwheel so that the spring is no longer under tension and the brake can easily move away from the sliding sheave but fixed in rotation.
  • the brake practically no longer acts on the rope and does not cause any blockage of the sliding device on said rope.
  • the second flange has a frustoconical flank leading, on the one hand, to the outer periphery of the flange and, on the other hand, to a shoulder whereas the first flange comprises only a frustoconical flank but no shoulder.
  • the latter tends to be wedged between the frustoconical flank of the first flange and the corner of the shoulder of the second flange and risks bearing against the screw.
  • a brake lifting pulley is known.
  • This pulley has a fixed yoke fitted with a hook that attaches to the suspension point. Inside the yoke a brake shoe is fixed under the hook. This shoe follows the shape of the pulley and has a similar and opposite throat.
  • the yoke is spring-loaded by two return springs. At rest, the return springs hold the pulley against the shoe, causing the rope to be crushed. If you want to maneuver, you must exert a traction on the pulley either by means of an auxiliary rope attached to a hook secured to the yoke, or by means of a traction exerted on the free strand of the rope, the load being attached to the other strand.
  • the shoe does not act on the pulley but on the rope and only a pinch of the latter leading to crushing makes it possible to avoid sliding of the rope between the throat of the pulley and the throat of the shoe.
  • a lifting device in particular a block consisting of a yoke, provided at its upper part with a fastening member and formed by two parallel wings, one of which has a a notch, an axis and a sheave, mobile on this axis and placed between the two wings of the yoke.
  • This muffle comprises at least one fixed sheave threaded on one end of the axis projecting with respect to the wing of the yoke in which the notch is produced and on which one of the strands of the cord wound around the mobile sheave is capable of being wound up after passage through the notch made in the wing of the yoke interposed between the mobile sheave and the fixed sheave (s).
  • the present invention aims to remedy these drawbacks.
  • the invention solves the problem of creating a safety block making it possible, on the one hand, to bring down a relatively large weight of the order of a hundred kilograms with a low holding force of the order of six kilograms and, on the other hand, increase safety by pinching the strand of cord wound on the second fixed sheave.
  • the device 101 comprises a yoke 102 consisting of two vertical wings 103, 104.
  • the upper end 105 of these vertical wings 103, 104 is crossed by an axis 106 serving as a connection between the yoke 102 and a hooking member 107 such that 'a hook.
  • the two wings 103, 104 are crossed right through by an axis of rotation 108 around which pivots a mobile sheave 109.
  • first fixed sheave 114 1 mounted on the axis of rotation 108.
  • This first fixed sheave 114 also has a groove 127 in which is placed the rope 113 held by the flange 122, cover 121 1 .
  • the lower edge 128 of this fixed sheave 114 is located on the same horizontal plane as the lower edge 129 of the vertical wing 104, which allows the passage of the rope 113 from the mobile sheave 109 to the first fixed sheave 114 1 .
  • a second fixed sheave 114 2 also threaded on the axis of rotation 108.
  • This second fixed sheave 114 2 has two conical sides 116, and 116 2 including the small base 119, , 119 2 is integral with the hub 120.
  • the cord 113 is held by the flange 122 2 of the cover 121 2 .
  • the device 101 comprises a shoe 131 forming a brake.
  • This shoe 131 made of a non-slip material and, in particular of rubber, is mounted on a sliding plate made of glass fibers 132.
  • This plate 132 includes a vertical light 133 through which passes an axis 134 serving as an element of connection between the plate 132 and the vertical wing 103 of the yoke 102.
  • the shoe 131 has, at its lower part 135, the shape of a half-sheave provided with a groove 136 adapted to the rope used 113 and, at its upper part 137, a semi-toric boss 138 coming, under the action of the force applied to the rope, enter the groove 112 of the mobile sheave 109.
  • the rope 113 is partially wound around the mobile sheave 109 (see Figures 1 and 2).
  • the guarantor 123 of the rope 113 is wound around the shoe 131 by engaging it in the groove 136 then around the fixed sheave 114 1 .
  • the plate 132 and shoe 131 assembly slides upwards and the semi-toric boss 138 is introduced into the groove 112 of the mobile sheave 109.
  • the passage of the guarantor of the cord 113 of the shoe 131 towards the fixed sheave 114, is possible because the lower edge 128 of the fixed sheave 114, and the lower edge 129 of the vertical wing 104 are on the same horizontal plane.
  • the lifting device 201 comprises the yoke 202 composed of two vertical wings 203, 204. These two wings 203, 204 are crossed at their upper end by an axis 206 on which is threaded a hub 239 crossed vertically by a threaded axis 240 on which is screwed a hook 241 of the hooking member 207. On the rod 242 of this hook 241 is threaded a sleeve 243 crossed by an axis 244 ensuring the connection between said sleeve 243 and a locking element 245. This locking element 245 cooperates with the tip 246 of the hook 241 to prevent the rope from coming out of the loop 247 of the hook 241.
  • the two vertical wings 203, 204 are crossed by the axis of rotation 208.
  • this axis 208 is threaded between the internal faces 210, 211 of the vertical wings 203, 204 a needle sleeve 248 serving as a connection between said axis 208 and the mobile sheave 209.
  • This axis 208 also serves as a support for the first fixed sheave 214 1 .
  • the immobility in rotation of this fixed sheave 214 is ensured by a tongue 249 of the external face 226 of the vertical wing 204 engaging in a groove 250 made in the external face 251 of the fixed sheave 214 1 .
  • the lateral displacement of the axis of rotation 208 is annihilated, on the one hand, by a clamping element 255 screwed on the threaded end 256 and, on the other hand, by a shoulder 257 pressing against the second external face 252 of the first fixed sheave 214 1 .
  • the second fixed sheave 214 2 is composed of two flanges 258, 259.
  • Each flange 258, 259 has a frustoconical flank 260, 261 leading, on the one hand, to the outer periphery 262, 263 and, on the other hand, to a shoulder 264, 265.
  • the two shoulders 264, 265 face each other and come to bear against one another as a result of the action of at least one elastic element 266.
  • the two frustoconical sides 260, 261 form between them the groove 267 in which the free strand of the rope is housed.
  • This stop ring 271 has a conical hole 273 in which the head 274 of the axis 208 is embedded.
  • the device 201 comprises a shoe 231 crossed by an axis 234 serving as a connecting element between the shoe 231 and the vertical wing 203.
  • a plate 232 is threaded on this axis 234 held by a stop flange 275.
  • the shoe 231 has a vertical light 276.
  • the plate 232 is provided with a light 233 as well as the stop flange 275. Therefore, the assembly formed by the pad 231, the plate 232 and the stop flange 275 can slide vertically.
  • the shoe 231 has at its lower part 235 a groove 236 in which the rope is housed and at its upper part 237 a semi-toric boss 238 which, in the event of operation, engages in the groove 212 of the mobile sheave 209 and blocks this last.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Claims (8)

1. Hebevorrichtung, insbesondere Seilrollenaufzug, bestehend aus einem Bügel (102; 202), der an seinem oberen Ende mit einem Aufhängungselement (107; 207) versehen ist, und aus zwei parallelen Schenkeln (103, 104 ; 203, 204) gebildet wird, von denen einer (104; 204) eine bogenförmige Aussparung (115) aufweist ; einer Achse (108 ; 208) ; einer Seilrolle (109, 209), die auf dieser Achse (108 ; 208) beweglich ist und zwischen den zwei Schenkeln (103, 104 ; 203, 204) des Bügels (102 ; 202) angeordnet ist ; und mindestens zwei festen Seilrollen (1141, 1142) ; (2141, 2142), die auf ein Ende der Achse (108 ; 208) aufgeschoben sind, die bei dem Bügel (102 ; 202) bezüglich des Schenkels (104 ; 204) übersteht, in dem die bogenförmige Aussparung verwirklicht ist, festen Seilrollen, um die eines der Lauftaue (123) des um die bewegliche Seilrolle (109 ; 209) gewickelten Seils (113) gewickelt werden kann, nachdem es um die bogenförmige Aussparung (115) geführt wurde, die in dem Schenkel (104) des Bügels (102) verwirklicht ist, wobei dieser Schenkel (104) zwischen der beweglichen Seilrolle (109 ; 209) und den festen Seilrollen (1141, 1142) ; (2141, 2142) angeordnet ist, dadurch gekennzeichnet, daß sie einen Schuh (131 ; 231) umfaßt, der mit der beweglichen Seilrolle (109 ; 209) zusammenwirkt, um diese letztere blockieren zu können, wobei der Schuh (131 ; 231) auf einer gleitenden Platte (132 ; 232) montiert ist, die zu dem Zentrum der mobilen Seilrolle (109 ; 209) durch das Lauftau (123) des Seils (113) zurückgeholt wird, das in der Phase als Abwärtsförderer um das untere Ende (135 ; 235) des Schuhs (131 ; 231) geführt wird, bevor es um die festen Rollen (1141, 1142) ; (2141, 2142) geführt wird.
2. Hebevorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß der Schuh (131 ; 231) einen unteren Teil (135 ; 235) aufweist, der die Form einer Halbrolle hat, die mit einer Kehle (136 ; 236) versehen ist, die an das verwendete Seil (113) angepaßt ist.
3. Hebevorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die aus Glasfaser verwirklichte Platte (132 ; 232) ein vertikales Langloch (133 ; 233) aufweist, durch das eine Achse (134 ; 234) hindurchgeführt ist, die als Verbindungselement zwischen der Einheit aus Schuh (131 ; 231) und Platte (132 ; 232) und einem der vertikalen Schenkel (103 ; 203) des Bügels (102; 202) dient, der die bewegliche Seilrolle (109 ; 209) hält.
4. Hebevorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die zweite feste Seilrolle (2142) einen beweglichen Flansch (259) aufweist, der mit Mitteln zur automatischen Rückholung (266) versehen ist, die den beweglichen Flansch (259) in seine Ruheposition zurückholen, wenn er infolge eines von dem Seil ausgeübten Zugs von dem festen Flansch (258) abgerückt wurde.
5. Vorrichtung gemäß Anspruch 4, dadurch gekennzeichnet, daß der bewegliche Flansch (259) eine in seiner äußeren Seite (269) angebrachte Aussparung (268) aufweist, in der mindestens ein elastisches Element (266) untergebracht ist, das die elastische Rückholung des beweglichen Flanschs (259) bewirkt.
6. Hebevorrichtung gemäß den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß die Aussparung (268) einen Absatz (272) aufweist, der als Sitz für einen Feststellring (271) dient, der die elastischen Elemente (266) unter Spannung hält.
7. Hebevorrichtung gemäß Anspruch 6, dadurch gekennzeichnet, daß der Feststellring (271) eine konische Öffnung (273) aufweist, in der der Kopf (274) der Achse (208) versenkt ist.
8. Hebevorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die zweite feste Seilrolle (267) eine Kehle (267) aufweist, deren Boden aus zwei Ansätzen (264, 265) besteht, und deren Seiten von den kegelstumpfförmigen Flanken (260, 261) der zwei Flansche (258, 259) gebildet werden.
EP19800440001 1979-05-18 1980-05-09 Hebevorrichtung, insbesondere Seilrollenaufzug Expired EP0019574B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80440001T ATE6417T1 (de) 1979-05-18 1980-05-09 Hebevorrichtung, insbesondere seilrollenaufzug.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7913298 1979-05-18
FR7913298A FR2456704A2 (fr) 1977-07-27 1979-05-18 Dispositif de levage en particulier moufle
FR8003533 1980-02-14
FR8003533A FR2476050B2 (fr) 1977-07-27 1980-02-14 Dispositif de levage en particulier moufle

Publications (2)

Publication Number Publication Date
EP0019574A1 EP0019574A1 (de) 1980-11-26
EP0019574B1 true EP0019574B1 (de) 1984-02-29

Family

ID=26221176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800440001 Expired EP0019574B1 (de) 1979-05-18 1980-05-09 Hebevorrichtung, insbesondere Seilrollenaufzug

Country Status (2)

Country Link
EP (1) EP0019574B1 (de)
DE (1) DE3066740D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494247A2 (fr) * 1980-11-19 1982-05-21 Singer Edouard Dispositif de levage en particulier moufle

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL28404C (de) * 1900-01-01
DE128109C (de) *
FR442199A (fr) * 1911-04-26 1912-08-26 Charles Dewever Treuil à friction pour sauvetage en cas d'incendie
US1636273A (en) * 1927-01-15 1927-07-19 Arnold W Baker Pulley block
GB287907A (en) * 1927-03-29 1928-05-31 Ane Pieter Schat Improvements in pulley blocks
FR677148A (fr) * 1929-06-20 1930-03-04 Palan pour marchandises, vélos, etc.
FR715418A (fr) * 1930-08-21 1931-12-03 Poulie de levage à frein
FR1408799A (fr) * 1964-07-06 1965-08-20 Usines Du Paquis Sa Des Moufle
GB1132211A (en) * 1966-01-26 1968-10-30 Paul Bert Elvstrom A sheave device
JPS499333Y1 (de) * 1970-11-24 1974-03-05
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

Also Published As

Publication number Publication date
DE3066740D1 (en) 1984-04-05
EP0019574A1 (de) 1980-11-26

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