EP0019574A1 - Lifting device, especially pulley block - Google Patents

Lifting device, especially pulley block Download PDF

Info

Publication number
EP0019574A1
EP0019574A1 EP19800440001 EP80440001A EP0019574A1 EP 0019574 A1 EP0019574 A1 EP 0019574A1 EP 19800440001 EP19800440001 EP 19800440001 EP 80440001 A EP80440001 A EP 80440001A EP 0019574 A1 EP0019574 A1 EP 0019574A1
Authority
EP
European Patent Office
Prior art keywords
sheave
lifting device
axis
mobile
yoke
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
EP19800440001
Other languages
German (de)
French (fr)
Other versions
EP0019574B1 (en
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/en
Priority claimed from FR8003533A external-priority patent/FR2476050B2/en
Application filed by Individual filed Critical Individual
Priority to AT80440001T priority Critical patent/ATE6417T1/en
Publication of EP0019574A1 publication Critical patent/EP0019574A1/en
Application granted granted Critical
Publication of EP0019574B1 publication Critical patent/EP0019574B1/en
Expired legal-status Critical Current

Links

Images

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.
  • 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 rope wound around the mobile sheave is likely to be wound after passing 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 as characterized in the claims, 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.
  • FIG. 1 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being in the normal use phase
  • Figure 2 shows a side view of Figure 1
  • FIG. 3 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being in the phase of use in a descender
  • Figure 4 shows a side view of Figure 3
  • FIG. 5 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being blocked
  • Figure 6 shows a side view of Figure 5
  • Figure 7 shows, in sectional view and in elevation, the lifting device provided with a fixed elastic sheave.
  • the device 101 comprises a yoke 102 consisting of two vertical wings 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 as 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 1 also has a groove 127 in which is placed the rope 113 held by the flange 122 1 of the cover 121 1 .
  • the lower edge 128 of this fixed sheave 114 1 is situated 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 1 14 1 .
  • This second fixed sheave 114 2 has two conical sides 116 1 and 116 2 including the small base 119 1 , 119 2 is integral with the hub 120.
  • the rope 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 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 rope 113 of the shoe 131 towards the fixed sheave 114 1 is possible because the lower edge 128 of the fixed sheave 114 1 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 East screwed a hook 241 of the hooking member 207. On the rod 242 of this hook 241 is threaded a socket 243 crossed by an axis 244 ensuring the connection between said socket 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 2141 is ensured by a tongue 249 of the external face 226 of the vertical wing 204 engaging in a groove 250 formed in the external face 251 of the fixed sheave 2141.
  • the latter has on its external face 230 a groove 253 in which engages a tongue 254 of the second fixed sheave 2 34 2 .
  • 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 are applied one against the other 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 is housed the free strand of the rope.
  • 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)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Emergency Lowering Means (AREA)

Abstract

1. A lifting device, especially a pulley block composed of a shell (102; 202) provided, in its upper part, with a hanging element (107; 207) and made of two parallel wings (103, 104; 203, 204) one of which (104; 204) has a notch (115) ; an axis (108; 208) ; a sheave (109; 209) movable on said axis (108; 208) and situated between the two wings (103, 104; 203, 204) of the shell (102; 202) ; and at least two fixed sheaves (1141 , 1142 ; 2141 , 2142 ) placed on an end of the axis (108; 208) projecting with respect to the wing (104; 204) of the shell (102; 202) in which the notch (115) is realized, fixed sheaves on which one of the tackle-falls (123) of the rope (113) wound about the movable sheave (109; 209) is apt to be wound after passage through the notch (115) made in the wing (104) of the shell (102) interposed between the movable sheave (109; 209) and the fixed sheaves (1141 , 1142 ; 2141 , 2142 ), characterized in that it comprises a shoe (131; 231) co-operating with the movable sheave (109; 209) in order to be able to immobilize the latter, the shoe (131; 231) being mounted on a sliding plate (132; 232) brought back toward the centre of the movable sheave (109; 209) by the tackle-fall (123) of the rope (113) passed, in downward step, on the lower part (135; 235) of the shoe (131; 231) before to be passed on the fixed sheaves (1141 , 1142 ; 2141 , 2142 ).

Description

L'invention concerne un dispositif de levage, en particulier une moufle.The invention relates to a lifting device, in particular a muffle.

On connaît déjà, par la demande de brevet européen n° 78400056.4 un dispositif de levage, en particulier une moufle constituée d'une chape, pourvue à sa partie supérieure d'un organe d'accrochage et formée de deux ailes parallèles dont une présente une échancrure, d'un axe et d'un réa, mobile sur cet axe et placé entre les deux ailes de la chape. Cette moufle comporte au moins un réa fixe enfilé sur une extrémité de l'axe faisant saillie par rapport à l'aile de la chape dans laquelle l'échancrure est réalisée et sur lequel l'un des brins de la corde enroulée autour du réa mobile est suceptible d'être enroulé après passage à travers l'échancrure réalisée dans l'aile de la chape interposée entre le réa mobile et le ou les réas fixes.Already known from European patent application No. 78400056.4 a lifting device, in particular a muffle consisting of a yoke, provided at its upper part with a fastening member and formed of two parallel wings, one of which has 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 rope wound around the mobile sheave is likely to be wound after passing through the notch made in the wing of the yoke interposed between the mobile sheave and the fixed sheave (s).

Toutefois, on a constaté que, lorsqu'on enroule le brin libre de la corde autour du second réa fixe, l'utilisateur agissant fréquemment d'une manière affolée, cet enroulement n'est pas assez serré et on risque que la corde continue à glisser, notamment lorsque la charge suspendue à l'autre brin de la corde est lourde et que la traction exercée sur ce brin est forte et brutale par suite d'une chute de la charge.However, it has been found that, when the free strand of the rope is wound around the second fixed sheave, the user frequently acting in a panic, this winding is not tight enough and there is a risk that the rope continues to sliding, especially when the load suspended on the other strand of the rope is heavy and the traction exerted on this strand is strong and brutal due to a fall in the load.

Par ailleurs, il s'est avéré nécessaire, au cours d'expériences, de bloquer également le réa mobile de sorte qu'aucune pièce constituant le dispositif de levage ne soit en mouvement.Furthermore, it has proved necessary, during experiments, to also block the mobile sheave so that no part constituting the lifting device is in motion.

La présente invention a pour but de remédier à ces inconvénients. L'invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à créer une moufle de sécurité permettant, d'une part, de faire descendre un poids relativement important de l'ordre d'une centaine de kilogrammes avec une force de retenue faible de l'ordre de six kilogrammes et, d'autre part, augmenter la sécurité en pinçant le brin de corde enroulé sur le second réa fixe.The present invention aims to remedy these drawbacks. The invention, as characterized in the claims, 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.

L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.The invention is set out below in more detail using drawings representing only one mode of execution.

La figure 1 représente, en vue en élévation, le dispositif de levage réalisé conformément à la présente invention, le réa mobile étant en phase d'utilisation normale ; la figure 2 représente une vue latérale de la figure 1 ; la figure 3 représente, en vue en élévation, le dispositif de levage réalisé conformément à la présente invention, le réa mobile étant en phase d'utilisation en descenseur ; la figure 4 représente une vue latérale de la figure 3 ; la figure 5 représente, en vue en élévation, le dispositif de levage réalisé conformément à la présente invention, le réa mobile étant bloqué ; la figure 6 représente une vue latérale de la figure 5 ; la figure 7 représente, en vue en coupe et en élévation, le dispositif de levage pourvu d'un réa fixe élastique.FIG. 1 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being in the normal use phase; Figure 2 shows a side view of Figure 1; FIG. 3 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being in the phase of use in a descender; Figure 4 shows a side view of Figure 3; FIG. 5 shows, in elevation view, the lifting device produced in accordance with the present invention, the mobile sheave being blocked; Figure 6 shows a side view of Figure 5; Figure 7 shows, in sectional view and in elevation, the lifting device provided with a fixed elastic sheave.

On se réfère aux figures 1 à 6.We refer to Figures 1 to 6.

Le dispositif 101 comporte une chape 102 constituée de deux ailes verticales 104. L'extrémité supérieure 105 de ces ailes verticales 103, 104 est traversée par un axe 106 servant de liaison entre la chape 102 et un organe d'accrochage 107 tel qu'un crochet. Les deux ailes 103, 104 sont traversées de part en part par un axe de rotation 108 autour duquel pivote un réa mobile 109.The device 101 comprises a yoke 102 consisting of two vertical wings 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 as a hook. The two wings 103, 104 are crossed right through by an axis of rotation 108 around which pivots a mobile sheave 109.

On applique contre la face externe 126 de l'aile verticale 104 un premier réa fixe 1141 monté sur l'axe de rotation 108. Ce premier réa fixe 1141 comporte également une gorge 127 dans laquelle vient se placer la corde 113 maintenue par le rebord 1221 du capot 1211. Le bord inférieur 128 de ce réa fixe 1141 est situé sur un même plan horizontal que le chant inférieur 129 de l'aile verticale 104, ce qui permet le passage de la corde 113 depuis le réa mobile 109 vers le premier réa fixe 114 1.Is applied against the outer face 126 of the vertical wing 104 a first fixed sheave 114 1 mounted on the axis of rotation 108. This first fixed sheave 114 1 also has a groove 127 in which is placed the rope 113 held by the flange 122 1 of the cover 121 1 . The lower edge 128 of this fixed sheave 114 1 is situated 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 1 14 1 .

On dispose contre la face externe 130 du premier réa fixe 1141 un second réa fixe 1142 également enfilé sur l'axe de rotation 108. Ce second réa fixe 1142 comporte deux flancs coniques 1161 et 1162 dont la petite base 1191, 1192 est solidaire du moyeu 120. La corde 113 est maintenue par le rebord 1222 du capot 1212.There is against the external face 130 of 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 1 and 116 2 including the small base 119 1 , 119 2 is integral with the hub 120. The rope 113 is held by the flange 122 2 of the cover 121 2 .

Selon l'invention, le dispositif 101 comporte un patin 131 formant frein. Ce patin 131, réalisé dans une matière anti-dérapante et, en particulier en caoutchouc, est monté sur une plaque coulissante en fibres de verre 132. Cette plaque 132 comporte une lumière verticale 133 à travers laquelle passe un axe 134 servant d'élément de liaison entre la plaque 132 et l'aile verticale 103 de la chape 102.According to the invention, 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.

Le patin 131 a, à sa partie inférieure 135, la forme d'un demi-réa pourvu d'une gorge 136 adaptée à la corde employée 113 et, à sa partie supérieure 137, un bossage semi-torique 138 venant, sous l'action de la force appliquée sur la corde, s'introduire dans la gorge 112 du réa mobile 109.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.

En cas d'utilisation normale du dispositif 101, la corde 113 s'enroule partiellement autour du réa mobile 109 (voir figures 1 et 2).In normal use of the device 101, the rope 113 is partially wound around the mobile sheave 109 (see Figures 1 and 2).

En phase de descenseur (voir figures 3 et 4), on enroule le garant 123 autour du patin 131 en l'engageant dans la gorge 136 puis autour du réa fixe 1141. Sous l'effet de l'action appliquée à la corde 113, l'ensemble plaque 132 et patin 131 coulisse vers le haut et le bossage semi-torique 138 s'introduit dans la gorge 112 du réa mobile 109. Le passage du garant de la corde 113 du patin 131 vers le réa fixe 1141 est possible du fait que le bord inférieur 128 du réa fixe 1141 et le chant inférieur 129 de l'aile verticale 104 sont sur un même plan horizontal.In the descender phase (see Figures 3 and 4), the guarantor 123 is wound around the shoe 131 by engaging it in the groove 136 then around the fixed sheave 114 1 . Under the effect of the action applied to the rope 113, 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 rope 113 of the shoe 131 towards the fixed sheave 114 1 is possible because the lower edge 128 of the fixed sheave 114 1 and the lower edge 129 of the vertical wing 104 are on the same horizontal plane.

Pour bloquer le dispositif 101, il suffit de continuer l'enroulement du garant et de le passer depuis le premier réa fixe 1141 sur le second réa fixe 1142 (voir figures 5 et 6).To block the device 101, it suffices to continue the winding of the guarantor and pass it from the first fixed sheave 114 1 to the second fixed sheave 114 2 (see FIGS. 5 and 6).

On se réfère à la figure 7.We refer to figure 7.

Le dispositif de levage 201 comporte la chape 202 composée de deux ailes verticales 203, 204. Ces deux ailes 203, 204 sont traversées à leur extrémité supérieure par un axe 206 sur lequel est enfilé un moyeu 239 traversé verticalement par un axe fileté 240 sur lequel est vissé un crochet 241 de l'organe d'accrochage 207. Sur la tige 242 de ce crochet 241 est enfilée une douille 243 traversée par un axe 244 assurant la liaison entre ladite douille 243 et un élément de verrouillage 245. Cet élément de verrouillage 245 coopère avec la pointe 246 du crochet 241 pour éviter que la corde sort de la boucle 247 du crochet 241.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 East screwed a hook 241 of the hooking member 207. On the rod 242 of this hook 241 is threaded a socket 243 crossed by an axis 244 ensuring the connection between said socket 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.

Par ailleurs, les deux ailes verticales 203, 204 sont traversées par l'axe de rotation 208. On enfile sur cet axe 208 entre les faces internes 210, 211 des ailes verticales 203, 204 une douille à aiguilles 248 servant de liaison entre ledit axe 208 et le réa mobile 209. Cet axe 208 sert également de support au premier réa fixe 2141. L'immobilité en rotation de ce réa fixe 2141 est assurée par une languette 249 de la face externe 226 de l'aile verticale 204 s'engageant dans une rainure 250 pratiquée dans la face externe 251 du réa fixe 2141. Sur la seconde face externe 252 du réa fixe 2141 est appliqué le capot en élastomère 221. Celui-ci comporte sur sa face externe 230 une rainure 253 dans laquelle s'engage une languette 254 du second réa fixe 234 2.Furthermore, the two vertical wings 203, 204 are crossed by the axis of rotation 208. On 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 2141 is ensured by a tongue 249 of the external face 226 of the vertical wing 204 engaging in a groove 250 formed in the external face 251 of the fixed sheave 2141. On the second external face 252 of the fixed sheave 214 1 is applied the elastomer cover 221. The latter has on its external face 230 a groove 253 in which engages a tongue 254 of the second fixed sheave 2 34 2 .

Le déplacement latéral de l'axe de rotation 208 est annihilé, d'une part, par un élément de serrage 255 vissé sur l'extrémité filetée 256 et, d'autre part, par un épaulement 257 s'appliquant contre la seconde face externe 252 du premier réa fixe 2141.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 .

Le second réa fixe 2142 se compose de deux flasques 258, 259. Chaque flasque 258, 259 comporte un flanc tronconique 260, 261 aboutant, d'une part, au pourtour externe 262, 263 et, d'autre part, à un épaulement 264, 265. Les deux épaulements 264, 265 se font face et viennent s'appliquer l'un contre l'autre par suite de l'action d'au moins un élément élastique 266. Les deux flancs tronconiques 260, 261 forment entre-eux la gorge 267 dans laquelle vient se loger le brin libre de la corde. L'élément élastique 266, disposé dans un logement 268 pratiqué dans la face externe 269 du second flasque 259, est maintenu, d'une part, par le fond 270 du logement 268 et, d'autre part, par une bague d'arrêt 271 coulissant dans un décrochement 272 aboutant au logement 268. Cette bague d'arrêt 271 présente un trou conique 273 dans lequel est noyée la tête 274 de l'axe 208.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 are applied one against the other 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 is housed the free strand of the rope. The elastic element 266, disposed in a housing 268 formed in the external face 269 of the second flange 259, is held, on the one hand, by the bottom 270 of the housing 268 and, on the other hand, by a stop ring 271 sliding in a recess 272 leading to the housing 268. This stop ring 271 has a conical hole 273 in which the head 274 of the axis 208 is embedded.

Lorsque l'utilisateur enroule le brin libre de la corde autour du second réa fixe 2142, le flasque 259 s'écarte du flasque 258 et l'élément élastique 266 est comprimé. En relâchant la traction exercée sur ce brin libre, l'élément élastique 266 agit et pousse le second flasque 259 vers le flasque 258. De ce fait, le brin libre de la corde est pincé entre les deux flancs tronconiques 260, 261.When the user winds the free strand of the cord around the second fixed sheave 2142, the flange 259 moves away from the flange 258 and the elastic element 266 is compressed. By releasing the traction exerted on this free strand, the elastic element 266 acts and pushes the second flange 259 towards the flange 258. As a result, the free strand of the cord is pinched between the two frustoconical flanks 260, 261.

Le dispositif 201 comporte un patin 231 traversé par un axe 234 servant d'élément de liaison entre le patin 231 et l'aile verticale 203. On enfile sur cet axe 234 une plaque 232 maintenue par un flasque d'arrêt 275. Le patin 231 présente une lumière verticale 276. De même, la plaque 232 est pourvue d'une lumière 233 ainsi que le flasque d'arrêt 275. De ce fait, l'ensemble formé par le patin 231, la plaque 232 et le flasque d'arrêt 275 peut coulisser verticalement. Le patin 231 comporte à sa partie inférieure 235 une gorge 236 dans laquelle est logée la corde et à sa partie supérieure 237 un bossage semi-torique 238 qui, en cas de fonctionnement, s'engage dans la gorge 212 du réa mobile 209 et bloque ce dernier.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. Similarly, 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.

Claims (9)

1. Dispositif de levage, en particulier moufle constituée d'une chape (102) pourvue à sa partie supérieure d'un organe d'accrochage (107) et formée de deux ailes parallèles dont une (104) présente une échancrure (115), d'un axe (108), d'un réa (109),-mobile sur cet axe (108) et placé entre les deux ailes (103, 104) de la chape (102), et d'au moins un réa fixe (114) enfilé sur une extrémité de l'axe (108) faisant saillie par rapport à l'aile (104) de la chape (102) dans laquelle l'échancrure (115) est réalisée et sur lequel l'un des brins (123) de la corde (113) enroulée autour du réa mobile (109) est susceptible d'être enroulé après passage à travers l'échancrure (115) réalisée dans l'aile (104) de la chape (102) interposée entre le réa mobile (109) et le (ou les) réa(s) fixe(s) (1141,1142)
caractérisé en ce qu'il comporte, en combinaison, d'une part, un patin (131) monté sur une plaque coulissante (132) et coopérant avec le réa mobile (109) pour immobiliser ce dernier et, d'autre part, un second réa fixe (2142) composé de deux flasques (258,259) à l'écartement variable dont l'un (258) est solidaire de la face externe (230) du capot (221), appliqué contre le premier réa fixe (214.), et dont l'autre (259), coulissant sur l'axe (208) est rappelé élastiquement pour un pincement du brin libre de la corde (213) entre les deux flasques (258,259).1. Lifting device, in particular a muffle consisting of a yoke (102) provided at its upper part with a fastening member (107) and formed of two parallel wings, one of which (104) has a notch (115), an axis (108), a sheave (109), - mobile on this axis (108) and placed between the two wings (103, 104) of the yoke (102), and at least one fixed sheave (114) threaded on one end of the axis (108) projecting with respect to the wing (104) of the yoke (102) in which the notch (115) is produced and on which one of the strands ( 123) of the rope (113) wound around the mobile sheave (109) is capable of being wound up after passing through the notch (115) produced in the wing (104) of the yoke (102) interposed between the sheave mobile (109) and the fixed sheave (s) (114 1 , 114 2 )
characterized in that it comprises, in combination, on the one hand, a shoe (131) mounted on a sliding plate (132) and cooperating with the mobile sheave (109) to immobilize the latter and, on the other hand, a second fixed sheave (214 2 ) composed of two flanges (258,259) with variable spacing, one of which (258) is integral with the external face (230) of the cover (221), applied against the first fixed sheave (214 . ), and the other (259) of which sliding on the axis (208) is resiliently recalled for pinching the free strand of the cord (213) between the two flanges (258,259). 2. Dispositif de levage selon la revendication 1 caractérisé en ce que le patin (131), réalisé en une matière anti-dérapante, comporte, à sa partie supérieure (137), un bossage semi-torique (138) venant, sous l'action de la force appliquée sur la corde (113), s'introduire dans la gorge (112) du réa mobile (109).2. Lifting device according to claim 1 characterized in that the shoe (131), made of a non-slip material, comprises, at its upper part (137), a semi-toric boss (138) coming under the action of the force applied to the rope (113), introduce itself into the groove (112) of the mobile sheave (109). 3. Dispositif de levage selon la revendication 1 caractérisé en ce que le patin (131) comporte une partie inférieure (135) ayant la forme d'un demi-réa pourvu d'une gorge (136) adaptée à la corde employée (113).3. Lifting device according to claim 1 characterized in that the shoe (131) has a lower part (135) having the shape of a half-sheave provided with a groove (136) adapted to the rope used (113) . 4. Dispositif de levage selon la revendication 1 caractérisé en ce que la plaque (132), réalisée en fibres de verre, comporte une lumière verticale (133) à travers laquelle passe un axe (134) servant d'élément de liaison entre l'ensemble patin (131), plaque (132) et une des ailes verticales (103) de la chape (102) servant de support au réa mobile (109).4. Lifting device according to claim 1 characterized in that the plate (132), made of glass fibers, comprises a vertical light (133) through which passes an axis (134) serving as connecting element between the pad assembly (131), plate (132) and one of the vertical wings (103) of the yoke (102) serving to support the mobile sheave (109). 5. Dispositif de levage selon la revendication 1, caractérisé en ce que chaque flasque (258,259) comporte un flanc tronconique (260,261) aboutant, d'une part, au pourtour externe (262,263) du flasque (258, 259) et, d'autre part, à un épaulement (264,265) se faisant face et s'appliquant l'un contre l'autre.5. Lifting device according to claim 1, characterized in that each flange (258,259) comprises a frustoconical flank (260,261) abutting, on the one hand, at the external periphery (262,263) of the flange (258, 259) and, on the other hand, to a shoulder (264,265) facing and applying one against the other. 6. Dispositif de levage selon les revendications 1 et 5, caractérisé en ce que le flasque mobile (259) comporte un logement (268) pratiqué dans sa face externe (269) dans lequel est placé au moins un élément élastique (266) assurant le rappel élastique du flasque mobile (259).6. Lifting device according to claims 1 and 5, characterized in that the movable flange (259) comprises a housing (268) formed in its external face (269) in which is placed at least one elastic element (266) ensuring the elastic return of the movable flange (259). 7. Dispositif de levage selon les revendications 1, 5 et 6, caractérisé en ce que le logement (268) comporte un décrochement (272) servant de logement à une bague d'arrêt (271) maintenant les éléments élastiques (266) sous tension.7. Lifting device according to claims 1, 5 and 6, characterized in that the housing (268) comprises a recess (272) serving as housing for a stop ring (271) keeping the elastic elements (266) under tension . 8. Dispositif de levage selon la revendication 7, caractérisé en ce que la bague d'arrêt (271) comporte un trou conique (273) dans lequel est noyée la tête (274) de l'axe (208).8. Lifting device according to claim 7, characterized in that the stop ring (271) has a conical hole (273) in which is embedded the head (274) of the axis (208). 9. Dispositif de levage selon les revendications 1 et 5, caractérisé en ce que le second réa fixe (2142) comporte une gorge (267) dont le fond est constitué par les deux épaulements (264, 265) et dont les côtés sont formés par les flancs tronconiques (260,261) des deux flasques (258,259).9. Lifting device according to claims 1 and 5, characterized in that the second fixed sheave (214 2 ) has a groove (267) whose bottom is formed by the two shoulders (264, 265) and whose sides are formed by the frustoconical sides (260,261) of the two flanges (258,259).
EP19800440001 1979-05-18 1980-05-09 Lifting device, especially pulley block Expired EP0019574B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80440001T ATE6417T1 (en) 1979-05-18 1980-05-09 LIFTING DEVICE, PARTICULARLY PULLEY LIFT.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7913298A FR2456704A2 (en) 1977-07-27 1979-05-18 Braking system for pulley block - utilises tension in rope to press rubber shoe into pulley groove
FR7913298 1979-05-18
FR8003533A FR2476050B2 (en) 1977-07-27 1980-02-14 LIFTING DEVICE, PARTICULARLY MOUFLE
FR8003533 1980-02-14

Publications (2)

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

Family

ID=26221176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800440001 Expired EP0019574B1 (en) 1979-05-18 1980-05-09 Lifting device, especially pulley block

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052572A2 (en) * 1980-11-19 1982-05-26 Edouard Singer Lifting device, in particular pulley block

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE128109C (en) *
NL28404C (en) * 1900-01-01
FR442199A (en) * 1911-04-26 1912-08-26 Charles Dewever Friction winch for rescue in case of fire
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 (en) * 1929-06-20 1930-03-04 Hoist for goods, bicycles, etc.
FR715418A (en) * 1930-08-21 1931-12-03 Brake hoist pulley
FR1408799A (en) * 1964-07-06 1965-08-20 Usines Du Paquis Sa Des Mitten
DE1300409B (en) * 1966-01-26 1969-07-31 Elvstrom Paul Bert Pulley for ropes
US3756565A (en) * 1970-11-24 1973-09-04 Tomy K K Pulley block with brake
DE2237622A1 (en) * 1972-07-31 1974-04-11 Heri Dipl Ing Schuller Descender for rescue from fire hazard
DE2258424A1 (en) * 1972-11-29 1974-05-30 Heri Dipl-Ing Schuller SINGLE-ROPE DESCENT DEVICE
DE2342244A1 (en) * 1972-07-31 1975-02-27 Heri Dipl Ing Schuller Abseil appts for fire rescue - has securing pin guided relative to bollard axis and brake surface nails to bound cable motion

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE128109C (en) *
NL28404C (en) * 1900-01-01
FR442199A (en) * 1911-04-26 1912-08-26 Charles Dewever Friction winch for rescue in case of fire
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 (en) * 1929-06-20 1930-03-04 Hoist for goods, bicycles, etc.
FR715418A (en) * 1930-08-21 1931-12-03 Brake hoist pulley
FR1408799A (en) * 1964-07-06 1965-08-20 Usines Du Paquis Sa Des Mitten
DE1300409B (en) * 1966-01-26 1969-07-31 Elvstrom Paul Bert Pulley for ropes
US3756565A (en) * 1970-11-24 1973-09-04 Tomy K K Pulley block with brake
DE2237622A1 (en) * 1972-07-31 1974-04-11 Heri Dipl Ing Schuller Descender for rescue from fire hazard
DE2342244A1 (en) * 1972-07-31 1975-02-27 Heri Dipl Ing Schuller Abseil appts for fire rescue - has securing pin guided relative to bollard axis and brake surface nails to bound cable motion
DE2258424A1 (en) * 1972-11-29 1974-05-30 Heri Dipl-Ing Schuller SINGLE-ROPE DESCENT DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052572A2 (en) * 1980-11-19 1982-05-26 Edouard Singer Lifting device, in particular pulley block
EP0052572A3 (en) * 1980-11-19 1984-01-04 Edouard Singer Lifting device, in particular pulley block

Also Published As

Publication number Publication date
DE3066740D1 (en) 1984-04-05
EP0019574B1 (en) 1984-02-29

Similar Documents

Publication Publication Date Title
EP0416079B1 (en) Self-locking descending device for rope with two locking positions
EP2399651B1 (en) Descender braking device for rope climbing and descent
EP0593369B1 (en) Security descending device for rope
FR3072034B1 (en) HARNESS
FR2564792A1 (en) REINFORCING A SEAT BELT FOR MOTOR VEHICLES
EP0232206A2 (en) Security device for supporting ladders and scaffoldings against poles, trees, columns, or building façades
CA1172625A (en) Lifting device, particularly lift block
FR2570945A1 (en) LIFTING STRAP
WO2006035138A1 (en) Self-locking descender device for different diameter ropes
US4332372A (en) Hoisting device
FR2626184A1 (en) Self-locking descender for controlled descent down a rope
EP0019574A1 (en) Lifting device, especially pulley block
CA1133886A (en) Hoisting device, namely a block
FR1435976A (en) Improvements to cable devices for handling analogous metal plates and plates
EP2857070A1 (en) Connection device which is displaceable and removable along a rope
EP0771931A1 (en) Safety device for ladder and ladder incorporating the same
FR2548913A1 (en) Novel apparatus of the descender type permitting both descent and ascent along a rope
CH626258A5 (en)
EP0018302B1 (en) Safety device for a solitary mountaineer and method of its operation
FR2476050A2 (en) Braking system for pulley block - utilises tension in rope to press rubber shoe into pulley groove
EP0014148B1 (en) Safety hook
FR2483791A1 (en) Snap hook for use in rock climbing - has fixed and rocking jaws closed by rod sliding in fixed jaw and engaging in rocking jaw
FR2884727A1 (en) SLIDER FOR LIFE LINE
FR2632196A1 (en) SELF-LOCKING DESCENDER
WO1995028990A1 (en) Self-locking abseil device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LU NL SE

17P Request for examination filed

Effective date: 19810220

ITF It: translation for a ep patent filed

Owner name: BUGNION S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 6417

Country of ref document: AT

Date of ref document: 19840315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3066740

Country of ref document: DE

Date of ref document: 19840405

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840510

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19840531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19840630

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860521

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19860531

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19870509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19870531

Ref country code: CH

Effective date: 19870531

BERE Be: lapsed

Owner name: SINGER EDOUARD

Effective date: 19870531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19871201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19890517

Year of fee payment: 10

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890531

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890630

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900510

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910201

EUG Se: european patent has lapsed

Ref document number: 80440001.8

Effective date: 19910115