Nothing Special   »   [go: up one dir, main page]

EP0050073A1 - Electric winch with a vee-groove drive pulley for a towing or lifting cable with free end - Google Patents

Electric winch with a vee-groove drive pulley for a towing or lifting cable with free end Download PDF

Info

Publication number
EP0050073A1
EP0050073A1 EP81401518A EP81401518A EP0050073A1 EP 0050073 A1 EP0050073 A1 EP 0050073A1 EP 81401518 A EP81401518 A EP 81401518A EP 81401518 A EP81401518 A EP 81401518A EP 0050073 A1 EP0050073 A1 EP 0050073A1
Authority
EP
European Patent Office
Prior art keywords
pulley
shaft
motor
winch
strand
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.)
Withdrawn
Application number
EP81401518A
Other languages
German (de)
French (fr)
Inventor
André Desplats
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.)
Tractel SAS
Original Assignee
Tractel SAS
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 Tractel SAS filed Critical Tractel SAS
Publication of EP0050073A1 publication Critical patent/EP0050073A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees

Definitions

  • the object of the invention is to propose a winch with an electric motor with a pulley with wedging groove for actuating a pulling or lifting cable with free strand, this winch being designed to be of such a compact construction and also simple as possible while having perfect operational safety and allowing a very high reduction ratio between the fast shaft of the motor and the pulley with wedging groove, obtained with a very small bulk in the axial direction.
  • the desired result is essentially obtained by the direct association of the wedging groove pulley with a single-stage reducer operating according to the known principle known as the Ferguson paradox, that is to say d '' a reducer c Q taking, around a sun gear with external teeth fixed to the output shaft of the motor, a cage of planetary gears which mesh both with the solar teeth and with the two internal teeth of a fixed crown and a movable receiving crown, this movable receiving crown being, in accordance with the invention, integral with the blocking groove pulley mounted with the reduction gear inside the casing of the device at one end of the electric motor .
  • the Ferguson paradox that is to say d '' a reducer c Q taking, around a sun gear with external teeth fixed to the output shaft of the motor, a cage of planetary gears which mesh both with the solar teeth and with the two internal teeth of a fixed crown and a movable receiving crown, this movable receiving crown being, in accordance with the invention, integral with the blocking groove pulley mounted with the
  • the blocking groove pulley rotates on an inner bearing of the casing between the motor and the reduction gear and the face of this pulley adjacent to the reduction gear carries the receiving crown with internal teeth actuated by the reduction gear, which ensures that the device a remarkable balancing.
  • the invention also provides, on the end of the fast shaft of the motor passing through the reduction gear, the mounting of a brake constituted by a friction disc interposed between two braking washers while a freewheel device, interposed between the friction disc and the motor shaft make it integral with the friction disc for a single direction of rotation.
  • This freewheel device advantageously consists of a simple helical spring with contiguous turns applied against the shaft, while one end of this spring is fixed to the friction disc.
  • the housing of the wedge groove pulley on one side of which the motor is directly mounted has upward a carrying handle secured to a device suspension member while, downwards, this casing has an opening for the passage of the free strand and the stretched strand of the lifting or traction cable wound over a large fraction of the periphery of the blocking groove of the pulley.
  • the motor is associated with a terminal box provided with a cover which can be used as a support base for placing it conveniently.
  • the terminal box can contain the starting capacitor and its relay as well as the up and down limit switches and their control mechanism while not requiring a minimum of wiring for the motor connection.
  • the electric motor 1 the rotor of which is indicated at 2 and the stator at 3, is mounted directly on one face of the casing 4 of the apparatus, an annular part 5 of which is crossed by the motor output arhre 6.
  • the face of the casing opposite the motor has around the annular part 5 a housing 7 for receiving the wedging pulley 8 mounted on a bearing 9 around this part 5.
  • This pulley has a V-shaped groove, indicated at 10, in which is engaged the lifting or traction cable 11 (figure 2).
  • the part of the casing 4 located around the housing 7 has a downward opening 12 traversed by the two strands of cable comprising the stretched strand 13 coupled to the load (not shown) and the free strand or soft strand 14.
  • the pulley 8 with wedging groove is associated with an epicycloidal reducer of the type using Ferguson's paradox, that is to say comprising a cage of planetary gears which mesh with both an external toothing of a solar crown carried by the fast shaft and with two internal toothing with very little different numbers of teeth provided on a fixed crown and on a receiving crown integral with the pulley 8.
  • the solar crown, indicated at 21, thus meshes with two wheels planetary 22 whose axes 23 are carried by a rotating cage 24.
  • Each of these planetary meshes both with the internal toothing of a fixed crown 25 carried by a casing tip 26 and with the internal toothing of a receiving crown 27 secured to the pulley 8.
  • the toothed crowns 25-27 are coaxial and both mesh with the same planetary wheels 22, their primitive circles and their numbers of teeth are slightly different and, according to Ferguson's paradox, the meshing is made possible by a different cutting of the teeth of the crowns 25-27 and by an appropriate cutting of the planetary wheels 22.
  • the numbers of teeth N1, N2, N3, N4 of the teeth 21, 22, 25, 27 can be respectively 8, 22, 56, 54 and then the reduction ratio, that is to say the ratio of the angular speed of the sun wheel 21 to the angular speed of the teeth 27 is equal to N4 (N3 + N1) / N1 (N4-N3), i.e.
  • the jamming pulley 8 is housed between the electric motor and the reduction gear, which ensures good balancing of the device.
  • the large reduction ratio (216), obtained by the reduction gear indicated above, makes this reduction gear hardly reversible, which is very suitable for an apparatus intended for lifting loads, and it allows the use of a simple brake. , since subject to a very low torque. As a result of this reduction ratio, the load applied to the cable cannot cause the winch to deflect when the engine is stopped in the direction of increasing the load. On the other hand, if the engine is stopped during a descent, there is a low risk of a slow continuation of the movement under the action of the load. To avoid this risk with certainty, a brake is applied to the motor shaft 6, which acts only in one direction of rotation.
  • the shaft 6 has at its end a cylindrical part 31 on which is wound a helical spring 32 with contiguous turns, one end of which is fixed to a friction disc 33 inserted between two braking washers 34 resiliently tightened in part. and other of this friction disc.
  • the spring 32 is mounted in such a way that, when the shaft 6 rotates in the direction corresponding to the rise in the load, it tends to unwind the turns of the spring by loosening the grip of this spring on the shaft, so that the friction disc 33 is not driven by the shaft.
  • the shaft 6 rotates in the direction of descent, it increases the tightening of the turns of the spring on the shaft, so that the brake disc driven by the shaft is braked by the washers between which it is tight.
  • the casing 4 is advantageously extended upwards by two parallel cheeks 35 on which is mounted a carrying handle 36 comprising a mooring pin 37 which crosses the cheeks 35 while being immobilized therein by a pin elastic 38.
  • a lower terminal box opposite the carrying handle that is to say oriented downwards.
  • This box which can receive the starting capacitor and its relay as well as the up and down limit switches, is closed by a special cover 50 designed to be used as a support base for conveniently placing the device. very stable when this device is not suspended by slinging by means of pin 37.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Pulleys (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention a pour objet un treuil à moteur électrique et à poulie agissant sur un câble à brin libre, ce treuil comprenant, autour de l'arbre de sortie (6) du moteur, un réducteur épicyloïdal à grand rapport de réduction et faible encombrement axial, composé d'une roue solaire (21) solidaire de l'arbre moteur (6), de planétaires (22) engrenant avec cette roue solaire ainsi qu'avec deux dentures intérieures, à nombres de dents voisins, d'une couronne fixe (25) et d'une couronne réceptrice (27) solidaire de la poulie coinceuse (8) coaxiale à l'arbre moteur (6).The subject of the invention is a winch with an electric motor and a pulley acting on a free-strand cable, this winch comprising, around the output shaft (6) of the motor, an epicyloidal reducer with a large reduction ratio and small bulk. axial, composed of a solar wheel (21) integral with the motor shaft (6), planetary (22) meshing with this solar wheel as well as with two internal teeth, with numbers of neighboring teeth, of a fixed crown (25) and a take-up ring (27) integral with the jamming pulley (8) coaxial with the motor shaft (6).

Description

L'invention a pour but de proposer un treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre, ce treuil étant conçu pour être d'une construction aussi compacte et aussi simple que possible tout en présentant une parfaite sécurité de fonctionnement et en permettant un rapport de réduction très élevé entre l'arbre rapide du moteur et la poulie à gorge de coincement, obtenu avec un encombrement très faible dans le sens axial.The object of the invention is to propose a winch with an electric motor with a pulley with wedging groove for actuating a pulling or lifting cable with free strand, this winch being designed to be of such a compact construction and also simple as possible while having perfect operational safety and allowing a very high reduction ratio between the fast shaft of the motor and the pulley with wedging groove, obtained with a very small bulk in the axial direction.

Conformément à l'invention, le résultat recherché est essentiellement obtenu par l'association directe de la poulie à gorge de coincement avec un réducteur à un seul étage fonctionnant suivant le principe connu dit du paradoxe de Ferguson, c'est-à-dire d'un réducteur cQmpre- nant, autour d'une roue solaire à denture extérieure solidaire de l'arbre de sortie du moteur, une cage de planétaires qui engrènent à la fois avec la denture solaire et avec les deux dentures intérieures d'une couronne fixe et d'une couronne réceptrice mobile, cette couronne réceptrice mobile étant, conformément à l'invention, solidaire de la poulie à gorge de coincement montée avec le réducteur à l'intérieur du carter de l'appareil à une extrémité du moteur électrique.In accordance with the invention, the desired result is essentially obtained by the direct association of the wedging groove pulley with a single-stage reducer operating according to the known principle known as the Ferguson paradox, that is to say d '' a reducer c Q taking, around a sun gear with external teeth fixed to the output shaft of the motor, a cage of planetary gears which mesh both with the solar teeth and with the two internal teeth of a fixed crown and a movable receiving crown, this movable receiving crown being, in accordance with the invention, integral with the blocking groove pulley mounted with the reduction gear inside the casing of the device at one end of the electric motor .

Selon une caractéristique complémentaire de l'invention, la poulie à gorge de coincement tourne sur un palier intérieur du carter entre le moteur et le réducteur et la face de cette poulie adjacente au réducteur porte la couronne réceptrice à denture intérieure actionnée par le réducteur, ce qui assure à l'appareil un équilibrage remarquable.According to an additional characteristic of the invention, the blocking groove pulley rotates on an inner bearing of the casing between the motor and the reduction gear and the face of this pulley adjacent to the reduction gear carries the receiving crown with internal teeth actuated by the reduction gear, which ensures that the device a remarkable balancing.

L'invention prévoit aussi, sur l'extrémité de l'arbre rapide du moteur traversant le réducteur, le montage d'un frein constitué par un disque de friction interposé entre deux rondelles de freinage tandis qu'un dispositif de roue libre, interposé entre le disque de friction et l'arbre du moteur, rend celui-ci solidaire du disque de friction pour un seul sens de rotation. Ce dispositif de roue libre est constitué avantageusement par un simple ressort en hélice à spires jointives appliquées contre l'arbre, tandis qu'une extrémité de ce ressort est fixée au disque de friction. Ainsi, quand l'arbre moteur tourne dans le sens correspondant à la montée de la charge qui est le sens de déroulement des spires de ressort, celui-ci se desserre et le disque de frein n'est pas entraîné par l'arbre, de sorte que son action de freinage ne s'exerce pas. Au contraire, quand l'arbre moteur tourne en sens inverse, il tend à serrer le ressort, de sorte que le disque de frein est rendu solidaire de l'arbre moteur qui se trouve freiné et immobilisé dès que ce moteur n'est plus sous tension.The invention also provides, on the end of the fast shaft of the motor passing through the reduction gear, the mounting of a brake constituted by a friction disc interposed between two braking washers while a freewheel device, interposed between the friction disc and the motor shaft make it integral with the friction disc for a single direction of rotation. This freewheel device advantageously consists of a simple helical spring with contiguous turns applied against the shaft, while one end of this spring is fixed to the friction disc. Thus, when the motor shaft rotates in the direction corresponding to the rise of the load which is the direction of unwinding of the spring coils, the latter is released and the brake disc is not driven by the shaft, so that its braking action is not exerted. On the contrary, when the motor shaft rotates in the opposite direction, it tends to tighten the spring, so that the brake disc is made integral with the motor shaft which is braked and immobilized as soon as this motor is no longer under voltage.

Pour la manipulation et l'utilisation commodes de l'appareil, le carter de la poulie à gorge de coincement sur une face duquel est directement monté le moteur présente vers le haut une poignée de portage solidaire d'un organe de suspension de l'appareil tandis que, vers le bas, ce carter présente une ouverture pour le passage du brin libre et du brin tendu du câble de levage ou de traction enroulé sur une grande fraction de la périphérie de la gorge de coincement de la poulie.For convenient handling and use of the device, the housing of the wedge groove pulley on one side of which the motor is directly mounted has upward a carrying handle secured to a device suspension member while, downwards, this casing has an opening for the passage of the free strand and the stretched strand of the lifting or traction cable wound over a large fraction of the periphery of the blocking groove of the pulley.

En outre, à l'opposé de la poignée de portage, le moteur est associé à une boite à bornes munie d'un couvercle utilisable comme base d'appui pour poser commodément l'appareil d'une façon très stable lorsqu'il n'est pas suspendu, la boite à bornes pouvant contenir le condensateur de démarrage et son relais ainsi que les arrêts de fin de course haut et bas et leur mécanisme de commande tout en ne nécessitant qu'un minimum de filerie pour le branchement du moteur.In addition, opposite to the carrying handle, the motor is associated with a terminal box provided with a cover which can be used as a support base for placing it conveniently. the device in a very stable manner when it is not suspended, the terminal box can contain the starting capacitor and its relay as well as the up and down limit switches and their control mechanism while not requiring a minimum of wiring for the motor connection.

Pour bien faire comprendre l'invention, on en décrira ci-après, à titre d'exemple, une forme d'exécution préférée en référence, au dessin schématique annexé, dans lequel :

  • la figure 1 est une vue de côté du treuil avec une coupe axiale partielle de la partie supérieure au-dessus de l'axe du moteur ; et
  • la figure 2 est une coupe transversale correspondante par le plan médian de la poulie à gorge de coincement.
To clearly understand the invention, a preferred embodiment will be described below, by way of example, with reference to the appended schematic drawing, in which:
  • Figure 1 is a side view of the winch with a partial axial section of the upper part above the axis of the engine; and
  • Figure 2 is a corresponding cross section through the median plane of the blocking groove pulley.

Dans l'exemple représenté au dessin, le moteur électrique 1, dont le rotor est indiqué en 2 et le stator en 3, .est monté directement sur une face du carter 4 de l'appareil dont une partie annulaire 5 est traversée par l'arhre de sortie 6 du moteur. La face du carter opposée au moteur présente autour de la partie annulaire 5 un logement 7 pour recevoir la poulie coinceuse 8 montée sur un roulement 9 autour de cette partie 5. Cette poulie présente une gorge de coincement en V, indiquée en 10, dans laquelle est engagé le câble de levage ou de traction 11 (figure 2). La partie du carter 4 située autour du logement 7 présente vers le bas une ouverture 12 traversée par les deux brins de câble comprenant le brin tendu 13 attelé à la charge (non représentée) et le brin libre ou brin mou 14. Ces deux brins 13-14 descendent entre les deuxjoues d'un bras 15 pivotant sur le carter autour d'un axe 16 et ce bras porte, de part et d'autre des deux brins 13-14, un galet presseur 17, voisin de l'axe 16 et agissant sur le brin libre 14, et une poulie de commande à gorge 18 sur un arc de la périphérie de laquelle prend appui le brin tendu 13 de telle façon que la charge appliquée à ce brin 13 tende à repousser la poulie 18 et à relever le bras 15 en pressant le galet 17 contre le brin 14 pour pousser celui-ci vers le fond de la gorge 10 en V sur la poulie coinceuse 8. On comprend que la pression de coincement exercée par le galet presseur 17 est d'autant plus forte que la charge appliquée au brin tendu 13 du câble est elle-même plus grande.In the example shown in the drawing, the electric motor 1, the rotor of which is indicated at 2 and the stator at 3, is mounted directly on one face of the casing 4 of the apparatus, an annular part 5 of which is crossed by the motor output arhre 6. The face of the casing opposite the motor has around the annular part 5 a housing 7 for receiving the wedging pulley 8 mounted on a bearing 9 around this part 5. This pulley has a V-shaped groove, indicated at 10, in which is engaged the lifting or traction cable 11 (figure 2). The part of the casing 4 located around the housing 7 has a downward opening 12 traversed by the two strands of cable comprising the stretched strand 13 coupled to the load (not shown) and the free strand or soft strand 14. These two strands 13 -14 descend between the two cheeks of an arm 15 pivoting on the casing around an axis 16 and this arm carries, on either side of the two strands 13-14, a pressure roller 17, adjacent to the axis 16 and acting on the free strand 14, and a control pulley with groove 18 on an arc of the periphery of which bears the stretched strand 13 so that the load applied to this strand 13 tends to push back the pulley 18 and to raise the arm 15 by pressing the roller 17 against the strand 14 to push it towards the bottom of the groove 10 in V on the jamming pulley 8. It is understood that the jamming pressure exerted by the pressure roller 17 is all the stronger as the load applied to the stretched strand 13 of the cable is itself larger.

Conformément à l'invention, la poulie 8 à gorge de coincement est associée à un réducteur épicycloidal du type utilisant le paradoxe de Ferguson, c'est-à-dire comprenant une cage de planétaires qui engrènent à la fois avec une denture extérieure d'une couronne solaire portée par l'arbre rapide et avec deux dentures intérieures à nombres de dents très peu différents prévues sur une couronne fixe et sur une couronne réceptrice solidaire de la poulie 8. La couronne solaire, indiquée en 21, engrène ainsi avec deux roues planétaires 22 dont les axes 23 sont portés par une cage tournante 24. Chacun de ces planétaires engrène à la fois avec la denture intérieure d'une couronne fixe 25 portée par un embout de carter 26 et avec la denture intérieure d'une couronne réceptrice 27 solidaire de la poulie 8.According to the invention, the pulley 8 with wedging groove is associated with an epicycloidal reducer of the type using Ferguson's paradox, that is to say comprising a cage of planetary gears which mesh with both an external toothing of a solar crown carried by the fast shaft and with two internal toothing with very little different numbers of teeth provided on a fixed crown and on a receiving crown integral with the pulley 8. The solar crown, indicated at 21, thus meshes with two wheels planetary 22 whose axes 23 are carried by a rotating cage 24. Each of these planetary meshes both with the internal toothing of a fixed crown 25 carried by a casing tip 26 and with the internal toothing of a receiving crown 27 secured to the pulley 8.

Ainsi, bien que les couronnes dentées 25-27 soient coaxiales et engrènent toutes deux avec les mêmes roues planétaires 22, leurs cercles primitifs et leurs nombres de dents sont légèrement différents et, selon le paradoxe de Ferguson, l'engrènement est rendu possible par un taillage différent des dentures des couronnes 25-27 et par un taillage approprié des roues planétaires 22.A titre d'exemple, on indiquera que les nombres de dents N1, N2, N3, N4 des dentures 21, 22, 25, 27 peuvent être respectivement 8, 22, 56, 54 et qu'alors le rapport de réduction, c'est-à-dire le rapport de la vitesse angulaire de la roue solaire 21 à la vitesse angulaire de la denture 27 est égal à N4(N3+N1)/N1(N4-N3), soit 54 x (56+8)/8 X (54-56) ou 54 x 64/(-16) = -216. En d'autres termes, la poulie coinceuse 8 tourne en sens inverse de l'arbre moteur 6 à une vitesse angulaire 216 fois plus petite. On voit ainsi qu'avec un seul étage réducteur épicyololdal on obtient un rapport de réduction considérable au moyen d'un mécanisme n'occupant qu'un très faible encombrement axial.Thus, although the toothed crowns 25-27 are coaxial and both mesh with the same planetary wheels 22, their primitive circles and their numbers of teeth are slightly different and, according to Ferguson's paradox, the meshing is made possible by a different cutting of the teeth of the crowns 25-27 and by an appropriate cutting of the planetary wheels 22. As an example, it will be indicated that the numbers of teeth N1, N2, N3, N4 of the teeth 21, 22, 25, 27 can be respectively 8, 22, 56, 54 and then the reduction ratio, that is to say the ratio of the angular speed of the sun wheel 21 to the angular speed of the teeth 27 is equal to N4 (N3 + N1) / N1 (N4-N3), i.e. 54 x (56 + 8) / 8 X (54-56) or 54 x 64 / (- 16) = -216. In other words, the jamming pulley 8 rotates in opposite direction to the motor shaft 6 at an angular speed 216 times lower. We thus see that with a single epicyololdal reducing stage we obtain a considerable reduction ratio by means of a mechanism occupying only a very small axial space requirement.

Selon une disposition particulièrement avantageuse, la poulie coinceuse 8 est logée entre le moteur électrique et le réducteur, ce qui assure un bon équilibrage de l'appareil.According to a particularly advantageous arrangement, the jamming pulley 8 is housed between the electric motor and the reduction gear, which ensures good balancing of the device.

Le grand rapport de réduction (216), obtenu par le réducteur indiqué ci-dessus, rend ce réducteur difficilement réversible, ce qui est tout indiqué pour un appareil destiné au levage de charges, et il permet .1'utilisation d'un frein simple, puisque soumis à un couple très faible. Par suite de ce rapport de réduction, la charge appliquée sur le câble ne peut faire dévirer le treuil quand le moteur est arrêté dans le sens de la montée de la charge. Par contre, si on arrête le moteur au cours d'une descente, il y a un faible risque d'une lente continuation du mouvement sous l'action de la charge. Pour éviter ce risque avec certitude, on applique à l'arbre moteur 6 un frein .n'agissant que dans un seul sens de rotation. A cet effet, l'arbre 6 présente à son extrémité une partie cylindrique 31 sur laquelle est enroulé un ressort en hélice 32 à spires jointives dont une extrémité est fixée à un disque de friction 33 inséré entre deux rondelles de freinage 34 serrées élastiquement de part et d'autre de ce disque de friction. Le ressort 32 est monté de telle façon que, quand l'arbre 6 tourne dans le sens correspondant à la montée de la charge, il tende à dérouler les spires du ressort en desserrant l'étreinte de ce ressort sur l'arbre, de sorte que le disque de friction 33 n'est pas entraîné par l'arbre. Au contraire, quand l'arbre 6 tourne dans le sens de la descente, il augmente le serrage des spires du ressort sur l'arbre, de sorte que le disque de frein entrainé par l'arbre est freiné par les rondelles entre lesquelles il est serré.The large reduction ratio (216), obtained by the reduction gear indicated above, makes this reduction gear hardly reversible, which is very suitable for an apparatus intended for lifting loads, and it allows the use of a simple brake. , since subject to a very low torque. As a result of this reduction ratio, the load applied to the cable cannot cause the winch to deflect when the engine is stopped in the direction of increasing the load. On the other hand, if the engine is stopped during a descent, there is a low risk of a slow continuation of the movement under the action of the load. To avoid this risk with certainty, a brake is applied to the motor shaft 6, which acts only in one direction of rotation. To this end, the shaft 6 has at its end a cylindrical part 31 on which is wound a helical spring 32 with contiguous turns, one end of which is fixed to a friction disc 33 inserted between two braking washers 34 resiliently tightened in part. and other of this friction disc. The spring 32 is mounted in such a way that, when the shaft 6 rotates in the direction corresponding to the rise in the load, it tends to unwind the turns of the spring by loosening the grip of this spring on the shaft, so that the friction disc 33 is not driven by the shaft. On the contrary, when the shaft 6 rotates in the direction of descent, it increases the tightening of the turns of the spring on the shaft, so that the brake disc driven by the shaft is braked by the washers between which it is tight.

Le carter 4 est avantageusement prolongé vers le haut par deux joues parallèles 35 sur lesquelles se monte une poignée de portage 36 comprenant une broche d'amarrage 37 qui traverse les joues 35 en y étant immobilisée par une goupille élastique 38.The casing 4 is advantageously extended upwards by two parallel cheeks 35 on which is mounted a carrying handle 36 comprising a mooring pin 37 which crosses the cheeks 35 while being immobilized therein by a pin elastic 38.

On a indiqué en 39 une boite à bornes inférieure opposée à la poignée de portage, c'est-à-dire orientée vers le bas. Cette boite, pouvant recevoir le condensateur de démarrage et son relais ainsi que les arrêts de fin de course vers le haut et vers le bas, est fermée par un couvercle spécial 50 conçu pour être utilisable comme base d'appui pour poser commodément l'appareil de façon très stable quand cet appareil n'est pas suspendu par élingage au moyen de la broche 37.There is indicated at 39 a lower terminal box opposite the carrying handle, that is to say oriented downwards. This box, which can receive the starting capacitor and its relay as well as the up and down limit switches, is closed by a special cover 50 designed to be used as a support base for conveniently placing the device. very stable when this device is not suspended by slinging by means of pin 37.

On comprend que l'exemple d'exécution plus particulièrement décrit ci-dessus et représenté au dessin annexé n'a aucun caractère limitatif et qu'on pourrait y apporter diverses modifications ou adjonctions sans s'écarter du cadre de l'invention définie par les revendications annexées.It is understood that the embodiment more particularly described above and represented in the appended drawing has no limiting character and that it would be possible to make various modifications or additions thereto without departing from the scope of the invention defined by the appended claims.

Claims (6)

1. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre, caractérisé par le fait que l'arbre de sortie (6) du moteur porte une couronne solaire dentée (21) engrenant avec les planétaires (22) d'une cage porte-planétaires (24) qui engrènent aussi à la fois avec les dentures intérieures de deux couronnes dentées (25-27) coaxiales à l'arbre du moteur, ces dentures intérieures ayant des nombres de dents voisins et l'une des deux couronnes à denture intérieure étant fixe et solidaire du carter de l'appareil tandis que l'autre est solidaire de la poulie (8) à gorge de coincement coaxiale à l'arbre (6) du moteur, l'ensemble des dentures (21-22-25-27) formant un réducteur épicycloldal ayant un grand rapport de réduction sous un faible encombrement axial.1. Winch with electric motor with blocking groove pulley for actuating a pulling or lifting cable with free strand, characterized in that the output shaft (6) of the motor carries a toothed solar crown ( 21) meshing with the planetary gears (22) of a planetary carrier cage (24) which also mesh both with the internal teeth of two toothed rings (25-27) coaxial with the motor shaft, these internal teeth having numbers of neighboring teeth and one of the two crowns with internal toothing being fixed and integral with the casing of the appliance while the other is integral with the pulley (8) with wedging groove coaxial with the shaft (6) of the engine, the set of teeth (21-22-25-27) forming an epicyclic reduction gear having a large reduction ratio in a small axial size. 2. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre selon la revendication 1, caractérisé en outre par le fait que la poulie (8) à gorge de coincement est montée autour de l'arbre de sortie (6) du moteur électrique (1) entre ce moteur et le réducteur épicycloldal en assurant ainsi un bon équilibrage du treuil.2. Electric motor winch with blocking groove pulley for actuating a free-strand traction or lifting cable according to claim 1, further characterized in that the blocking groove pulley (8) is mounted around the output shaft (6) of the electric motor (1) between this motor and the epicyclic reduction gear thus ensuring good balance of the winch. 3. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre selon la revendication 1 ou la revendication 2, caractérisé en outre par le fait que, sur l'arbre rapide (6) du moteur, est monté un frein n'agissant que pour une rotation de l'arbre rapide dans un seul sens, plus particulièrement dans le sens correspondant à la descente de la charge.3. Electric motor winch with blocking groove pulley for actuating a free-strand traction or lifting cable according to claim 1 or claim 2, further characterized in that on the fast shaft (6) of the motor, a brake is mounted which acts only for a rapid rotation of the shaft in one direction, more particularly in the direction corresponding to the descent of the load. 4. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre selon la revendication 3, dans lequel le frein n'agissant que dans un seul sens de rotation de l'arbre moteur est Constitué par un disque de friction (33) qui est serré entre deux rondelles non tournantes (34) et est solidaire d'une extrémité d'un ressort en hélice à spires jointives (32) enroulées contre la périphérie de l'arbre (6) dans le sens qui assure le desserrage du ressort sur l'arbre quand celui-ci tourne dans le sens correspondant à la montée de la charge.4. Winch with electric motor with blocking groove pulley for actuating a pulling or lifting cable with free strand according to claim 3, wherein the brake acting only in one direction of rotation of the motor shaft is constituted by a friction disc (33) which is clamped between two non-rotating washers (34) and is integral of one end of a helical spring with contiguous turns (32) wound against the periphery of the shaft (6) in the direction which ensures the loosening of the spring on the shaft when the latter rotates in the direction corresponding to the load increase. 5. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre selon l'une quelconque des revendications précédentes, caractérisé par le fait que la poulie (8) à gorge de coincement tourne à l'intérieur d'un carter (4) présentant, à l'opposé d'une poignée (36) de portage et d'élingage sur la partie haute, une ouverture inférieure (12) à travers laquelle passent le brin tendu (13) et le brin libre (14) du câble, le brin tendu s'appliquant sur un arc de la périphérie d'une poulie à gorge (18) de commande du coincement, tourillonnant sur un axe porté par un levier pivotant (15) qui porte encore, entre son axe de pivotement (16) et cette poulie de commande (18), un galet presseur (17) agissant sur le brin libre (14) du câble pour presser celui-ci dans la gorge (10) de la poulie (8) à gorge de coincement d'autant plus fortement que la charge du brin tendu est plus forte.5. Winch with electric motor with blocking groove pulley for actuating a pulling or lifting cable with free strand according to any one of the preceding claims, characterized in that the pulley (8) with groove jamming turns inside a casing (4) having, opposite a handle (36) for carrying and slinging on the upper part, a lower opening (12) through which the stretched strand passes (13) and the free strand (14) of the cable, the stretched strand applying on an arc of the periphery of a groove pulley (18) for controlling wedging, journalling on an axis carried by a pivoting lever (15 ) which still carries, between its pivot axis (16) and this control pulley (18), a pressure roller (17) acting on the free end (14) of the cable to press it in the groove (10) of the pulley (8) with wedging groove all the more strongly as the load of the stretched strand is stronger. 6. Treuil à moteur électrique avec poulie à gorge de coincement pour l'actionnement d'un câble de traction ou de levage à brin libre selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'à l'opposé de la poignée (36) de portage et d'élingage, le moteur porte une boite à bornes (39) orientée vers le bas et munie d'un couvercle (40) utilisable comme base pour poser commodément l' appareil qui est ainsi très stable lorsqu'il n'est pas suspendu par sa poignée.6. Winch with electric motor with blocking groove pulley for the actuation of a pulling or lifting cable with free strand according to any one of the preceding claims, characterized in that opposite the handle (36) for carrying and slinging, the motor carries a terminal box (39) oriented downwards and provided with a cover (40) which can be used as a base for placing the device conveniently which is thus very stable when is not suspended by its handle.
EP81401518A 1980-10-09 1981-10-02 Electric winch with a vee-groove drive pulley for a towing or lifting cable with free end Withdrawn EP0050073A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8021593 1980-10-09
FR8021593A FR2491902B1 (en) 1980-10-09 1980-10-09 WINCH WITH ELECTRIC MOTOR WITH PUNCH WITH POCKET THROAT FOR ACTUATING A TRACTION OR LIFTING CABLE WITH FREE STRAND

Publications (1)

Publication Number Publication Date
EP0050073A1 true EP0050073A1 (en) 1982-04-21

Family

ID=9246711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401518A Withdrawn EP0050073A1 (en) 1980-10-09 1981-10-02 Electric winch with a vee-groove drive pulley for a towing or lifting cable with free end

Country Status (6)

Country Link
US (1) US4434973A (en)
EP (1) EP0050073A1 (en)
JP (2) JPS5790394A (en)
CA (1) CA1163623A (en)
ES (1) ES8207091A1 (en)
FR (1) FR2491902B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728494C1 (en) * 1987-08-26 1988-12-08 Habegger Maschf Portable cable machine
EP0363800A1 (en) * 1988-10-13 1990-04-18 Power Climber Inc. Hoist apparatus
FR2646661A1 (en) * 1989-05-05 1990-11-09 Maxwell Marine Ltd WINCH FOR MANIPULATION OF ANCHOR
EP0677480A1 (en) * 1994-03-24 1995-10-18 Gebrueder Roeck Ohg - Snc D. Simon Roeck Compact cable traction device
DE19851708A1 (en) * 1998-10-30 2000-05-11 Mannesmann Ag Transportable winch device for lifting injured patient, has electric motor, its supply battery, winch drive and winch roller contained in common carrier case
US6241215B1 (en) 1998-10-30 2001-06-05 Mannesmann Ag Portable winch

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4884783A (en) * 1988-02-12 1989-12-05 Thorn, Inc. Hoist with oil cooled brake
US6371248B1 (en) * 1998-12-14 2002-04-16 Inventio Ag Drive unit for elevators
SE532850C2 (en) * 2007-11-09 2010-04-20 Selden Mast Ab Device for flax winch on sailboat
US8434742B2 (en) * 2010-03-08 2013-05-07 Wizard Products, Llc Gas powered self contained portable winch
US9908757B2 (en) 2010-03-08 2018-03-06 Wizard Products, Llc Gas powered self contained portable winch
CN103466484A (en) * 2013-09-24 2013-12-25 常熟市永固起重设备安装工程有限公司 Gear-type electric lifting platform
CN109516394B (en) * 2018-09-30 2020-09-01 武汉船用机械有限责任公司 Winch and method for mounting winch
SE543179C2 (en) * 2019-04-09 2020-10-20 Actsafe Systems AB A portable power-driven system
TWI717270B (en) * 2020-04-30 2021-01-21 徐瑞峯 Structure of electric winch

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1329107A (en) * 1919-06-14 1920-01-27 James P O'bryan Hoisting device
US1347785A (en) * 1920-07-27 Electric hoist
DE348303C (en) * 1922-02-06 Carl Gensel Dipl Ing Electrically operated pulley
DE486843C (en) * 1922-09-13 1929-11-27 Carl Bomnueter Dipl Ing Electrically operated pulley
DE495477C (en) * 1928-03-21 1930-04-07 Demag Akt Ges Electric hoist with traction sheaves
GB731009A (en) * 1952-10-11 1955-06-01 Albert Vinson Speed-reducing device for winches chain lifts and the like
GB2041867A (en) * 1979-02-13 1980-09-17 Sky Safety Eng Pte Ltd Drive Mechanism

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1513449A (en) * 1966-12-28 1968-02-13 Pomagalski Jean Sa Winch improvements

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1347785A (en) * 1920-07-27 Electric hoist
DE348303C (en) * 1922-02-06 Carl Gensel Dipl Ing Electrically operated pulley
US1329107A (en) * 1919-06-14 1920-01-27 James P O'bryan Hoisting device
DE486843C (en) * 1922-09-13 1929-11-27 Carl Bomnueter Dipl Ing Electrically operated pulley
DE495477C (en) * 1928-03-21 1930-04-07 Demag Akt Ges Electric hoist with traction sheaves
GB731009A (en) * 1952-10-11 1955-06-01 Albert Vinson Speed-reducing device for winches chain lifts and the like
GB2041867A (en) * 1979-02-13 1980-09-17 Sky Safety Eng Pte Ltd Drive Mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728494C1 (en) * 1987-08-26 1988-12-08 Habegger Maschf Portable cable machine
EP0363800A1 (en) * 1988-10-13 1990-04-18 Power Climber Inc. Hoist apparatus
FR2646661A1 (en) * 1989-05-05 1990-11-09 Maxwell Marine Ltd WINCH FOR MANIPULATION OF ANCHOR
EP0677480A1 (en) * 1994-03-24 1995-10-18 Gebrueder Roeck Ohg - Snc D. Simon Roeck Compact cable traction device
DE19851708A1 (en) * 1998-10-30 2000-05-11 Mannesmann Ag Transportable winch device for lifting injured patient, has electric motor, its supply battery, winch drive and winch roller contained in common carrier case
DE19851708C2 (en) * 1998-10-30 2000-08-17 Mannesmann Ag Winch with a housing
US6241215B1 (en) 1998-10-30 2001-06-05 Mannesmann Ag Portable winch

Also Published As

Publication number Publication date
FR2491902B1 (en) 1985-12-06
ES506126A0 (en) 1982-09-01
US4434973A (en) 1984-03-06
CA1163623A (en) 1984-03-13
FR2491902A1 (en) 1982-04-16
ES8207091A1 (en) 1982-09-01
JPS5790394A (en) 1982-06-05
JPH0264586U (en) 1990-05-15
JPH0237825Y2 (en) 1990-10-12

Similar Documents

Publication Publication Date Title
EP0050073A1 (en) Electric winch with a vee-groove drive pulley for a towing or lifting cable with free end
FR2753169A1 (en) Cord stop for marine vessel sail rigging
FR2640252A1 (en) CABLE TRACTION DEVICE
FR2566868A1 (en) Epicyclic reduction gear for IC engine starter motor
FR2837864A1 (en) VOLTAGE MECHANISM OF A COMPENSATION SPRING FOR A CLOSURE OR SUN PROTECTION INSTALLATION
FR2741661A1 (en) DEVICE FOR ROTATING A ROLLING SHUTTER WINDING ELEMENT
FR2650580A3 (en) MANUAL HOIST
FR2539730A1 (en) Adherence winch
FR2628810A1 (en) Two-speed alternator drive using epicyclic gearbox - free wheel for high-speed operation is located between sun wheels and annulus, locking then together at low revolutions
EP0391805A1 (en) Self-tailing winch with articulated teeth
FR2654940A1 (en) Device for lowering a load, particularly an individual
FR2635205A1 (en) Removable motorised crank for operating a mechanical device
EP0364429A1 (en) Device for hauling loads along smooth cables
FR2768242A1 (en) Regulation of relative speed of movement between two coupled parts
FR3065940B1 (en) MOTORIZED ASSISTANCE DEVICE OF PEDAL
FR2557866A1 (en) Winch traversed by a lifting or traction cable or rope.
BE472548A (en)
FR2610065A2 (en) Device for converting movement, in particular speed reduction gear
FR2734557A1 (en) Portable winch for mountain rescues
EP0121488A1 (en) Reduction gearing, especially for a cable car or the like
FR1259249A (en) Wheel hub containing a dynamo
BE889318R (en) WIND MOTOR
EP1419100A1 (en) Motor-driven winch
CH376709A (en) Cable or cord winding device
BE435968A (en)

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): CH DE GB IT NL SE

ITCL It: translation for ep claims filed

Representative=s name: DR. ING. A. RACHELI & C.

TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
17P Request for examination filed

Effective date: 19820915

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840410

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DESPLATS, ANDRE