EP1361154B1 - Protection device for cutter - Google Patents

Protection device for cutter Download PDF

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Publication number
EP1361154B1
EP1361154B1 EP03291083A EP03291083A EP1361154B1 EP 1361154 B1 EP1361154 B1 EP 1361154B1 EP 03291083 A EP03291083 A EP 03291083A EP 03291083 A EP03291083 A EP 03291083A EP 1361154 B1 EP1361154 B1 EP 1361154B1
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EP
European Patent Office
Prior art keywords
protective device
shells
annular
semi
shell
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Expired - Lifetime
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EP03291083A
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German (de)
French (fr)
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EP1361154A1 (en
Inventor
Franck Delot
José Delot
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Delot et Cie SARL
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Financiere Delot & Cie Ste
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Publication of EP1361154A1 publication Critical patent/EP1361154A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • B63H5/165—Propeller guards, line cutters or other means for protecting propellers or rudders

Definitions

  • the present invention relates to a device for protection for wire cutter.
  • Wire cutters are installed on the trees of Propellers for the propulsion of ships and ships, function of cutting any cable or wire that would come to wrap around these trees and these propellers.
  • Document FR2768120 discloses a wire cutter intended to to be mounted on a boat propeller shaft, particularly at onboard engine, between the outer end of the tube stern and propeller, to cut the ropes or others, which could otherwise wrap around the propeller shaft and, in cooperation with the stern tube, block this one.
  • ropes that can be in the water at the propeller shaft, such that: ropes, fishing lines, parts of fishing nets, herbs or other, generally having a shape elongate.
  • Cable cutters of this type comprise, for example, a fixing hub on a motor boat propeller shaft embedded, an annular disk extending radially from outside the hub and having on its outer periphery a sharp circular edge and on its face intended to be opposite the stern tube a cutting element axially protruding with an edge of cut in a radial plane spaced from the face stern.
  • the purpose of the present invention is to remedy this situation by proposing a protective device cable cutter which provides both protection of users and installers of wire cutters as well as people likely to approach a rope cutter by example when a boat is out of the water, and a protection of cable cutters against the risks of accidental deterioration.
  • the device includes two annular half-shells intended to grip in position assembling said cutting portion within said annular half-shells.
  • the protection device according to the invention can be used in a repositionable way, because of its structure in two half-shells, either for transport and handling of a cable cutter not installed or disassembled, either to completely cover an installed and fixed wire cutter on a propeller shaft.
  • each annular half-shell can advantageously comprise an internal groove arranged for to receive this cutting circular edge.
  • each half-hull may then comprise in addition to a first semi-cylindrical housing provided for receive this axial circular cutting element.
  • each first semi-cylindrical housing axially presents a depth substantially greater than the thickness of the circular cutting element axial, so as to ensure total protection of this cutting element in case of shock or fall.
  • the two annular half-shells can also be advantageously provided to grip in assembled position at least a part of the fixing hub.
  • Each half-hull then further comprises a second semi-cylindrical housing provided to receive at least a portion of the hub of fixation.
  • each second semi-cylindrical housing can be partially closed by an annular part of closure extending from the outer periphery of each half-shell, and has a determined depth of receiving the outer main body of the hub.
  • the annular closing parts are furthermore arranged to define a diameter opening sufficient to allow the passage of a propeller shaft.
  • the diameter of the groove can be advantageously chosen equal to or greater than that of the circular cutting edge of the rope cutter and the diameters of the second housing cylindrical are preferably determined, coaxially with the diameter of the groove, so that the two half-shells rings enclose the hub of a wire cutter, so as to serve as a radial stop for the two annular half-shells in position on the rope cutter.
  • the half-shells do not exert stress or wear on the edge cutting circular.
  • the two half-shells can be made of many ways, for example by molding or by machining, with various materials, for example metal, made of plastic or resin.
  • the constituent material can advantageously have sufficient elasticity to facilitate the insertion of the rope cutter in both half-hulls, and ensure the maintenance of the half-hulls by pinching on the rope cutter.
  • a half-hull can be pinched on the wire cutter between the part annular closure of the second cylindrical housing, bearing on the hub, and an opposite face of the groove, in support on the annular disc.
  • At least one of the two half-shells can be made in one piece, for example by injection, molding or machining a block.
  • FIGS. 5 an exemplary embodiment of a device for protection according to the invention.
  • This protection device 1 is designed for the protection of a cable cutter 2 having a hub cylindrical 23 including a first end face 25 defines a part of a stern face which, in the state mounted, is vis-à-vis the outer end face 30 of a stern tube 3 and close to it, and a annular disc 20 extending radially from the outer surface of the hub 23 in an area adjacent to this first end face 25 of the hub 23.
  • One of the the sides of the annular disc 20 constitutes the other part of the stern face and its outer periphery has an edge circular cutter 21.
  • the rope cutter 2 further comprises a cutting element 22 projecting axially on the stern side, with a cutting edge located in a plane radial spaced from the stern side.
  • the device protection 1 consists of two half-shells 1.1, 1.2 provided to grip the rope cutter 2, whether the latter is actually installed on a propeller shaft or that it be not installed and handled as an isolated component.
  • Each half shell 1.1, 1.2 is of semi-cylindrical outer shape. They are each delimited externally by a semi-cylindrical outer surface 40.1, 40.2.
  • Each half-shell includes an inner groove cylindrical 10.1, 10.2 adapted to receive the edge cutting circular 21 of the rope cutter 2, located on the one hand between a first semi-cylindrical housing 11.1, 11.2 provided to receive the axial cutting element 22 and secondly a second semi-cylindrical housing 12.1, 12.2 provided for receive the outer main body 26 of the hub 23 of the rope cutter 2.
  • the first semi-cylindrical housing 11.1, 11.2 is defined by a first semi-annular closing portion 15.1, 15.2 integral part of each half-shell 1.1, 1.2 and extending from the inner portion of the half-shell towards the inside of the device.
  • the depth first semi-cylindrical housing is chosen more large than the axial length of the axial cutting element 22, while their diameter is chosen greater than that said axial cutting element 22.
  • the second semi-cylindrical housing 12.1, 12.2 is partially closed by a second semi-annular portion 14.1, 14.2 integral part of each half-shell 1.1, 1.2 and extending radially from the part inside the half-shell towards the inside of the device.
  • This partial closure defines a cylindrical area 13.1, 13.2 intended to leave sufficient clearance around the propeller shaft when the protective device 1 is installed on a wire cutter in place on this tree.
  • the axial distance between a first semi-annular part closure 14.1, 14.2 and the second part of closing 15.1, 15.2 on the same half-shell is chosen substantially equal to or less than the axial length of the way.
  • the half-shell can be maintained by pinching, that is, climbing in force, between the face skew of the annular disk 20 on which the first ring portion 14.1, 14.2 and a rear face 24 of the hub, axially opposite the stern face 25, on which is based on the second annular portion 15.1, 15.2.
  • the diameter of the cylindrical inner groove 10.1, 10.2 is greater than the outside diameter of the circular edge cutting 21 of the wire cutter and the diameters of the second cylindrical housings 12.1, 12.2 are preferably determined, coaxially with the groove, so that the two annular half-shells enclose the hub 23 of the rope cutter, so as to serve as a radial abutment to the two half-shells rings in position on the rope cutter. So, the half-shells do not exert radial stress or of wear on the circular cutting edge 21.
  • each half-shell radially with respect to wire cutter 2 so that the annular disc 20 penetrates in the two grooves 10.1, 10.2 of the two half-shells 1.1, 1.2 until the teeth of the circular cutting edge 21 come in contact with the peripheral walls grooves of the two half-shells 1.1, 1.2.
  • the half-shells are then held firmly on the wire cutter and separated by a gap of weak thickness, for example 2 mm.
  • the configuration of the protection device 1 according to the invention in two half-shells 1.1, 1.2 allows assembly directly on a wire cutter 1 installed on a shaft 6 of a helix 5, as illustrated in FIGS. 4 and 5.
  • the half-shells can to understand means of liaison 41 to maintain together the two half-shells in their position on the cutter. This is particularly advantageous for ensuring that Half shells remain in place even if a wear of the cable cutter does not allow the force mounting of the half-shells.
  • connection means comprise in each of the semi-cylindrical outer surfaces 40.1, 40.2, a semi-annular groove respective 42.1, 42.2. These two gorges form together, when the protective device is in place, a throat device 43.
  • a link 44 is housed in the peripheral groove 43, thus ensuring the connection between the half-shells.
  • the link can advantageously be an elastic ring.
  • the device 5 does not include a semi-cylindrical outer surface, the outer surfaces 50.1, 50.2, follow substantially the internal geometry of the device, such as previously described, so that the device of protection is of substantially homogeneous thickness Ep, and thin.
  • the second embodiment can be made by plastic injection of a material elastically deformable, for example low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • a device according to second embodiment for the same external diameter 80 mm wire cutter, the outer diameter of the protection device can be 85 mm and its thickness can be substantially homogeneous from 2 to 3 mm.
  • the invention is not limited to the examples which have just been described and many can be made to these examples without going outside the box of the invention.
  • the structure and internal geometry of the protective device can be adapted to the specific geometry of each wire cutter.
  • the external form of the protective device do not be cylindrical.
  • the device can be molded in one piece comprising the two connected half-shells by the articulation.
  • the joint can thus be molded simultaneously with half-shells in the same material adapted.
  • the joint can also be an included insert when molding the half-shells.
  • the connecting hubs can also be from another type that a link in a peripheral groove and for example understand straps.
  • the throat may not be peripheral and only extend to part of one or two half-hulls.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Turning (AREA)
  • Dicing (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Harvester Elements (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Two semi-circular casings (1.1, 1.2) are fitted around the cutters (22), containing them when assembled.

Description

La présente invention concerne un dispositif de protection pour coupe-filin.The present invention relates to a device for protection for wire cutter.

Des coupe-filin sont installés sur les arbres des hélices de propulsion des bateaux et navires, avec pour fonction de sectionner tout câble ou filin qui viendrait s'enrouler autour de ces arbres et de ces hélices.Wire cutters are installed on the trees of Propellers for the propulsion of ships and ships, function of cutting any cable or wire that would come to wrap around these trees and these propellers.

Le document FR2768120 divulgue un coupe-filin destiné à être monté sur un arbre d'hélice de bateau, notamment à moteur embarqué, entre l'extrémité extérieure du tube d'étambot de celui-ci et l'hélice, pour couper les filins ou autres, qui pourraient sinon s'enrouler autour de l'arbre d'hélice et, en coopération avec le tube d'étambot, bloquer celle-ci.Document FR2768120 discloses a wire cutter intended to to be mounted on a boat propeller shaft, particularly at onboard engine, between the outer end of the tube stern and propeller, to cut the ropes or others, which could otherwise wrap around the propeller shaft and, in cooperation with the stern tube, block this one.

On entend ici par filin de nombreux éléments pouvant se trouver dans l'eau au niveau de l'arbre d'hélice, tels que : filins, fils de pêche, parties de filets de pêche, herbes ou autres, ayant de manière générale une forme allongée.Here we mean by rope many elements that can be in the water at the propeller shaft, such that: ropes, fishing lines, parts of fishing nets, herbs or other, generally having a shape elongate.

Des coupe-filin de ce type comportent par exemple un moyeu de fixation sur un arbre d'hélice de bateau à moteur embarqué, un disque annulaire s'étendant radialement à partir de l'extérieur du moyeu et présentant sur sa périphérie extérieure un bord circulaire coupant et sur sa face prévue pour être en vis à vis du tube d'étambot un élément coupant faisant axialement saillie avec un bord de coupe situé dans un plan radial espacé de la face d'étambot.Cable cutters of this type comprise, for example, a fixing hub on a motor boat propeller shaft embedded, an annular disk extending radially from outside the hub and having on its outer periphery a sharp circular edge and on its face intended to be opposite the stern tube a cutting element axially protruding with an edge of cut in a radial plane spaced from the face stern.

Or la manutention et les opérations d'installation ou d'enlèvement d'un coupe-filin sur l'arbre d'hélice d'un bateau posent de sérieuses difficultés en termes de sécurité et de protection contre les coupures. Par ailleurs, une chute d'un coupe-filin ou un contact accidentel de celui-ci contre un corps rigide peuvent provoquer une détérioration des dents périphériques du coupe-filin. De plus, la présence d'un coupe-filin à proximité immédiate d'une hélice pose aussi des problèmes de sécurité lorsque le bateau se trouve hors d'eau à des fins de transport ou de maintenance. Il n'existe pas actuellement de solution satisfaisante pour parer aux risques précités.But handling and installation operations or removal of a rope cutter on the propeller shaft of a boat pose serious difficulties in terms of security and protection against cuts. By elsewhere, a fall of a wire cutter or a contact accidental of it against a rigid body can cause deterioration of the peripheral teeth of the cable cutter. In addition, the presence of a rope cutter immediate proximity to a propeller also poses problems safety when the boat is out of the water at transportation or maintenance purposes. He does not exist currently a satisfactory solution to deal with aforementioned risks.

Le but de la présente invention est de remédier à cette situation en proposant un dispositif de protection pour coupe-filin qui assure à la fois une protection des utilisateurs et installateurs de coupe-filin ainsi que des personnes susceptibles d'approcher un coupe-filin par exemple lorsqu'un bateau se trouve hors d'eau, et une protection des coupe-filin contre les risques de détérioration accidentelle.The purpose of the present invention is to remedy this situation by proposing a protective device cable cutter which provides both protection of users and installers of wire cutters as well as people likely to approach a rope cutter by example when a boat is out of the water, and a protection of cable cutters against the risks of accidental deterioration.

Cet objectif est atteint avec un dispositif de protection pour un coupe-filin avec au moins une partie tranchante et comportant un moyeu de fixation à un arbre d'hélice destiné à être monté sur un arbre d'hélice de bateau à moteur embarqué. Le dispositif comprend deux demi-coques annulaires prévues pour enserrer en position assemblée ladite partie tranchante à l'intérieur desdites demi-coques annulaires.This objective is achieved with a protection for a rope cutter with at least one cutting portion and having a hub for attachment to a propeller shaft for mounting on a boat engine propeller shaft. The device includes two annular half-shells intended to grip in position assembling said cutting portion within said annular half-shells.

Ainsi, le dispositif de protection selon l'invention peut être utilisé de façon repositionnable, du fait de sa structure en deux demi-coques, soit pour le transport et la manutention d'un coupe-filin non installé ou démonté, soit pour couvrir complètement un coupe-filin installé et fixé sur un arbre d'hélice. Thus, the protection device according to the invention can be used in a repositionable way, because of its structure in two half-shells, either for transport and handling of a cable cutter not installed or disassembled, either to completely cover an installed and fixed wire cutter on a propeller shaft.

Lorsque le coupe-filin protégé comprend un disque annulaire comportant un bord circulaire coupant s'étendant radialement, chaque demi-coque annulaire peut avantageusement comporter une rainure interne agencée pour recevoir ce bord circulaire coupant.When the protected wire cutter includes a disk ring having a cutting circular edge extending radially, each annular half-shell can advantageously comprise an internal groove arranged for to receive this cutting circular edge.

Pour un coupe-filin comprenant en outre un élément coupant circulaire s'étendant axialement à partir d'une face du disque annulaire prévue pour être en vis à vis d'un tube d'étambot, chaque demi-coque peut alors comporter en outre un premier logement semi-cylindrique prévu pour recevoir cet élément coupant circulaire axial.For a rope cutter further comprising an element circular cutter extending axially from a face of the annular disk intended to be opposite a stern tube, each half-hull may then comprise in addition to a first semi-cylindrical housing provided for receive this axial circular cutting element.

De préférence, chaque premier logement semi-cylindrique présente axialement une profondeur sensiblement plus grande que l'épaisseur de l'élément coupant circulaire axial, de façon à assurer une protection totale de cet élément coupant en cas de choc ou de chute.Preferably, each first semi-cylindrical housing axially presents a depth substantially greater than the thickness of the circular cutting element axial, so as to ensure total protection of this cutting element in case of shock or fall.

Les deux demi-coques annulaires peuvent aussi être avantageusement prévues pour enserrer en position assemblée au moins une partie du moyeu de fixation. Chaque demi-coque comporte alors en outre un second logement semi-cylindrique prévu pour recevoir au moins une partie du moyeu de fixation.The two annular half-shells can also be advantageously provided to grip in assembled position at least a part of the fixing hub. Each half-hull then further comprises a second semi-cylindrical housing provided to receive at least a portion of the hub of fixation.

Par ailleurs, chaque second logement semi-cylindrique peut être partiellement fermé par une partie annulaire de fermeture s'étendant de la périphérie extérieure de chaque demi-coque, et présente une profondeur déterminée de façon à recevoir le corps principal extérieur du moyeu.Moreover, each second semi-cylindrical housing can be partially closed by an annular part of closure extending from the outer periphery of each half-shell, and has a determined depth of receiving the outer main body of the hub.

Les parties annulaires de fermeture sont en outre agencées de façon à définir une ouverture de diamètre suffisant pour permettre le passage d'un arbre d'hélice.The annular closing parts are furthermore arranged to define a diameter opening sufficient to allow the passage of a propeller shaft.

Le diamètre de la rainure peut être avantageusement choisi égal ou supérieur à celui du bord circulaire coupant du coupe-filin et les diamètres des seconds logements cylindriques sont de préférence déterminés, coaxialement au diamètre de la rainure, de sorte que les deux demi-coques annulaires enserrent le moyeu d'un coupe-filin, de façon à servir de butée radiale aux deux demi-coques annulaires en position sur le coupe-filin. Ainsi, les demi-coques n'exercent pas de contrainte ou d'usure sur le bord circulaire coupant.The diameter of the groove can be advantageously chosen equal to or greater than that of the circular cutting edge of the rope cutter and the diameters of the second housing cylindrical are preferably determined, coaxially with the diameter of the groove, so that the two half-shells rings enclose the hub of a wire cutter, so as to serve as a radial stop for the two annular half-shells in position on the rope cutter. Thus, the half-shells do not exert stress or wear on the edge cutting circular.

Les deux demi-coques peuvent être réalisées de nombreuses manières, par exemple par moulage ou par usinage, avec des matériaux variés, par exemple en métal, en matière plastique ou en résine. Le matériau constitutif peut avantageusement présenter une élasticité suffisante pour faciliter l'insertion du coupe-filin dans les deux demi-coques, et assurer le maintien des demi-coques par pincement sur le coupe-filin. Par exemple, une demi-coque peut être pincée sur le coupe-filin entre la partie annulaire de fermeture du second logement cylindrique, en appui sur le moyeu, et une face opposée de la rainure, en appui sur le disque annulaire.The two half-shells can be made of many ways, for example by molding or by machining, with various materials, for example metal, made of plastic or resin. The constituent material can advantageously have sufficient elasticity to facilitate the insertion of the rope cutter in both half-hulls, and ensure the maintenance of the half-hulls by pinching on the rope cutter. For example, a half-hull can be pinched on the wire cutter between the part annular closure of the second cylindrical housing, bearing on the hub, and an opposite face of the groove, in support on the annular disc.

L'une au moins des deux demi-coques peut être réalisée en une seule pièce, par exemple par injection, moulage ou usinage d'un bloc.At least one of the two half-shells can be made in one piece, for example by injection, molding or machining a block.

D'autres avantages et caractéristiques de l'invention apparaítront à l'examen de la description détaillée d'un mode de mise en oeuvre nullement limitatif, et des dessins annexés sur lesquels :

  • la figure 1 est une vue d'un premier mode de réalisation pour un dispositif de protection selon l'invention, dont seule une des demi-coques enserrant une partie d'un coupe-filin est représentée ;
  • la figure 2 est une vue de face d'un dispositif de protection selon l'invention ;
  • la figure 3 est une vue en coupe d'un dispositif de protection selon l'invention ;
  • la figure 4 illustre l'une des deux demi-coques d'un dispositif de protection selon l'invention utilisé en place sur un coupe-filin installé sur un arbre d'hélice ;
  • la figure 5 illustre le dispositif de protection de la figure 4 complètement installé sur le coupe-filin ;
  • la figure 6 est une figure similaire à la figure 3, le dispositif de protection comprenant en outre des moyens de liaison entre les deux demi-coques ; et,
  • la figure 7 est une vue en coupe, similaire aux figures 3 et 6, d'un deuxième mode de réalisation pour un dispositif de protection selon l'invention.
Other advantages and characteristics of the invention will appear on examining the detailed description of an embodiment which is in no way limitative, and the appended drawings in which:
  • Figure 1 is a view of a first embodiment for a protection device according to the invention, of which only one of the half-shells enclosing a portion of a wire cutter is shown;
  • Figure 2 is a front view of a protection device according to the invention;
  • Figure 3 is a sectional view of a protection device according to the invention;
  • Figure 4 illustrates one of the two half-shells of a protective device according to the invention used in place on a wire cutter installed on a propeller shaft;
  • FIG. 5 illustrates the protection device of FIG. 4 completely installed on the cable cutter;
  • Figure 6 is a figure similar to Figure 3, the protection device further comprising connecting means between the two half-shells; and,
  • Figure 7 is a sectional view, similar to Figures 3 and 6, of a second embodiment for a protection device according to the invention.

On va maintenant décrire, en référence aux figures 1 à 5 précitées, un exemple de réalisation d'un dispositif de protection selon l'invention.We will now describe, with reference to FIGS. 5, an exemplary embodiment of a device for protection according to the invention.

Ce dispositif de protection 1 est conçu pour la protection d'un coupe-filin 2 comportant un moyeu cylindrique 23 dont une première face d'extrémité 25 définit une partie d'une face d'étambot qui, à l'état monté, est en vis-à-vis de la face d'extrémité extérieure 30 d'un tube d'étambot 3 et à proximité de celle-ci, et un disque annulaire 20 s'étendant radialement à partir de la surface extérieure du moyeu 23 dans une zone adjacente à cette première face d'extrémité 25 du moyeu 23. L'une des faces du disque annulaire 20 constitue l'autre partie de la face d'étambot et sa périphérie extérieure présente un bord circulaire coupant 21. Le coupe-filin 2 comprend en outre un élément coupant 22 faisant axialement saillie sur la face d'étambot, avec un bord de coupe situé dans un plan radial espacé de la face d'étambot. Le dispositif de protection 1 est constitué de deux demi-coques 1.1, 1.2 prévues pour enserrer le coupe-filin 2, que ce dernier soit effectivement installé sur un arbre d'hélice ou qu'il soit non installé et manipulé comme un composant isolé. Chaque demi-coque 1.1, 1.2, est de forme extérieure semi-cylindrique. Elles sont chacune délimitées extérieurement par une surface extérieure semi-cylindrique 40.1, 40.2. Chaque demi-coque comprend une rainure intérieure cylindrique 10.1, 10.2 conçue pour recevoir le bord circulaire coupant 21 du coupe-filin 2, située d'une part entre un premier logement semi-cylindrique 11.1, 11.2 prévu pour recevoir l'élément coupant axial 22 et d'autre part un second logement semi-cylindrique 12.1, 12.2 prévu pour recevoir le corps principal extérieur 26 du moyeu 23 du coupe-filin 2.This protection device 1 is designed for the protection of a cable cutter 2 having a hub cylindrical 23 including a first end face 25 defines a part of a stern face which, in the state mounted, is vis-à-vis the outer end face 30 of a stern tube 3 and close to it, and a annular disc 20 extending radially from the outer surface of the hub 23 in an area adjacent to this first end face 25 of the hub 23. One of the the sides of the annular disc 20 constitutes the other part of the stern face and its outer periphery has an edge circular cutter 21. The rope cutter 2 further comprises a cutting element 22 projecting axially on the stern side, with a cutting edge located in a plane radial spaced from the stern side. The device protection 1 consists of two half-shells 1.1, 1.2 provided to grip the rope cutter 2, whether the latter is actually installed on a propeller shaft or that it be not installed and handled as an isolated component. Each half shell 1.1, 1.2 is of semi-cylindrical outer shape. They are each delimited externally by a semi-cylindrical outer surface 40.1, 40.2. Each half-shell includes an inner groove cylindrical 10.1, 10.2 adapted to receive the edge cutting circular 21 of the rope cutter 2, located on the one hand between a first semi-cylindrical housing 11.1, 11.2 provided to receive the axial cutting element 22 and secondly a second semi-cylindrical housing 12.1, 12.2 provided for receive the outer main body 26 of the hub 23 of the rope cutter 2.

Le premier logement semi-cylindrique 11.1, 11.2 est défini par une première partie semi-annulaire de fermeture 15.1, 15.2 partie intégrante de chaque demi-coque 1.1, 1.2 et s'étendant depuis la partie intérieure de la demi-coque vers l'intérieur du dispositif. Axialement, la profondeur des premiers logements semi-cylindriques est choisie plus grande que la longueur axiale de l'élément coupant axial 22, tandis que leur diamètre est choisi supérieur à celui dudit élément coupant axial 22.The first semi-cylindrical housing 11.1, 11.2 is defined by a first semi-annular closing portion 15.1, 15.2 integral part of each half-shell 1.1, 1.2 and extending from the inner portion of the half-shell towards the inside of the device. Axially, the depth first semi-cylindrical housing is chosen more large than the axial length of the axial cutting element 22, while their diameter is chosen greater than that said axial cutting element 22.

Le second logement semi-cylindrique 12.1, 12.2 est partiellement fermé par une seconde partie semi-annulaire de fermeture 14.1, 14.2 partie intégrante de chaque demi-coque 1.1, 1.2 et s'étendant radialement depuis la partie intérieure de la demi-coque vers l'intérieur du dispositif. Cette fermeture partielle définit une zone cylindrique 13.1, 13.2 prévue pour laisser un jeu suffisant autour de l'arbre d'hélice lorsque le dispositif de protection 1 est installé sur un coupe-filin en place sur cet arbre.The second semi-cylindrical housing 12.1, 12.2 is partially closed by a second semi-annular portion 14.1, 14.2 integral part of each half-shell 1.1, 1.2 and extending radially from the part inside the half-shell towards the inside of the device. This partial closure defines a cylindrical area 13.1, 13.2 intended to leave sufficient clearance around the propeller shaft when the protective device 1 is installed on a wire cutter in place on this tree.

La distance axiale entre une première partie semi-annulaire de fermeture 14.1, 14.2 et la seconde partie de fermeture 15.1, 15.2 sur une même demi-coque est choisie sensiblement égale ou inférieure à la longueur axiale du moyen. Ainsi, la demi-coque peut être maintenue par pincement, c'est à dire montée en force, entre la face d'étambot du disque annulaire 20 sur laquelle s'appuie la première partie annulaire 14.1, 14.2 et une face arrière 24 du moyeu, axialement opposée à la face d'étambot 25, sur laquelle s'appuie la deuxième partie annulaire 15.1, 15.2.The axial distance between a first semi-annular part closure 14.1, 14.2 and the second part of closing 15.1, 15.2 on the same half-shell is chosen substantially equal to or less than the axial length of the way. Thus, the half-shell can be maintained by pinching, that is, climbing in force, between the face skew of the annular disk 20 on which the first ring portion 14.1, 14.2 and a rear face 24 of the hub, axially opposite the stern face 25, on which is based on the second annular portion 15.1, 15.2.

Le diamètre de la rainure intérieure cylindrique 10.1, 10.2 est supérieur au diamètre extérieur du bord circulaire coupant 21 du coupe-filin et les diamètres des seconds logements cylindriques 12.1, 12.2 sont de préférence déterminés, coaxialement à la rainure, de sorte que les deux demi-coques annulaires enserrent le moyeu 23 du coupe-filin, de façon à servir de butée radiale aux deux demi-coques annulaires en position sur le coupe-filin. Ainsi, les demi-coques n'exercent pas de contrainte radiale ou d'usure sur le bord circulaire coupant 21.The diameter of the cylindrical inner groove 10.1, 10.2 is greater than the outside diameter of the circular edge cutting 21 of the wire cutter and the diameters of the second cylindrical housings 12.1, 12.2 are preferably determined, coaxially with the groove, so that the two annular half-shells enclose the hub 23 of the rope cutter, so as to serve as a radial abutment to the two half-shells rings in position on the rope cutter. So, the half-shells do not exert radial stress or of wear on the circular cutting edge 21.

Pour la mise en place du dispositif de protection 1, on déplace radialement chaque demi-coque par rapport au coupe-filin 2 de façon que le disque annulaire 20 pénètre dans les deux rainures 10.1, 10.2 des deux demi-coques 1.1, 1.2 jusqu'à ce que les dents du bord coupant circulaire 21 entrent en contact avec les parois périphériques intérieures des rainures des deux demi-coques 1.1, 1.2. Les demi-coques se trouvent alors maintenues fermement sur le coupe-filin et séparées par un interstice de faible épaisseur, par exemple 2 mm.For the installation of the protection device 1, we move each half-shell radially with respect to wire cutter 2 so that the annular disc 20 penetrates in the two grooves 10.1, 10.2 of the two half-shells 1.1, 1.2 until the teeth of the circular cutting edge 21 come in contact with the peripheral walls grooves of the two half-shells 1.1, 1.2. The half-shells are then held firmly on the wire cutter and separated by a gap of weak thickness, for example 2 mm.

La configuration du dispositif de protection 1 selon l'invention en deux demi-coques 1.1, 1.2 permet un montage direct sur un coupe-filin 1 installé sur un arbre 6 d'une hélice 5, comme l'illustrent les figures 4 et 5. The configuration of the protection device 1 according to the invention in two half-shells 1.1, 1.2 allows assembly directly on a wire cutter 1 installed on a shaft 6 of a helix 5, as illustrated in FIGS. 4 and 5.

Comme illustré à la figure 6, les demi-coques peuvent comprendre des moyens de liaison 41 pour maintenir ensemble les deux demi-coques dans leur position sur le coupe-filin. Ceci est particulièrement avantageux pour s'assurer que les demi-coques restent en place, même si une usure du coupe-filin ne permet pas le montage en force des demi-coques.As shown in Figure 6, the half-shells can to understand means of liaison 41 to maintain together the two half-shells in their position on the cutter. This is particularly advantageous for ensuring that Half shells remain in place even if a wear of the cable cutter does not allow the force mounting of the half-shells.

Dans l'exemple de la figure 6, les moyens de liaison comprennent dans chacune des surfaces extérieures semi-cylindriques 40.1, 40.2, une gorge semi-annulaire respective 42.1, 42.2. Ces deux gorges forment ensemble, lorsque le dispositif de protection est en place, une gorge périphérique 43.In the example of FIG. 6, the connection means comprise in each of the semi-cylindrical outer surfaces 40.1, 40.2, a semi-annular groove respective 42.1, 42.2. These two gorges form together, when the protective device is in place, a throat device 43.

Un lien 44 est logé dans la gorge périphérique 43, assurant ainsi la liaison entre les demi-coques. Le lien peut avantageusement être un anneau élastique.A link 44 is housed in the peripheral groove 43, thus ensuring the connection between the half-shells. The link can advantageously be an elastic ring.

Dans le mode de réalisation de la figure 7, le dispositif 5 ne comprend pas de surface extérieure semi-cylindrique, les surfaces extérieures 50.1, 50.2, suivent sensiblement la géométrie intérieure du dispositif, telle que décrite précédemment, de sorte que le dispositif de protection est d'épaisseur Ep sensiblement homogène, et de faible épaisseur.In the embodiment of FIG. 7, the device 5 does not include a semi-cylindrical outer surface, the outer surfaces 50.1, 50.2, follow substantially the internal geometry of the device, such as previously described, so that the device of protection is of substantially homogeneous thickness Ep, and thin.

Ceci est particulièrement avantageux pour réaliser des dispositifs destinés à protéger des coupe-filin de grandes dimensions pour un faible poids relatif du dispositif de protection.This is particularly advantageous for carrying out devices to protect large rope cutters dimensions for a low relative weight of the device protection.

En outre, le deuxième mode de réalisation peut être réalisé par injection plastique d'un matériau élastiquement déformable, par exemple de Polyéthylène Basse Densité (PEBD). La souplesse et l'élasticité d'un dispositif de protection ainsi réalisé permet de l'adapter sur un coupe-filin ayant subit une déformation ou une usure, ou sur un coupe-filin d'un type non prévu initialement. In addition, the second embodiment can be made by plastic injection of a material elastically deformable, for example low density polyethylene (LDPE). The flexibility and elasticity of a protection thus achieved makes it possible to adapt it to a cable cutter having undergone deformation or wear, or on a wire cutter of a type not originally planned.

Ceci permet aussi d'utiliser des méthodes de fabrication pour le dispositif de protection et le coupe-filin, qui nécessite des tolérances moins sévères.This also makes it possible to use methods of manufacture for the protection device and the cable cutter, which requires less severe tolerances.

A titre d'exemple non limitatif, pour la protection d'un coupe-filin d'un diamètre externe de 80 mm, un dispositif de protection selon le premier mode de réalisation de l'invention peut présenter les caractéristiques dimensionnelles suivantes :

  • diamètre extérieur des demi-coques annulaires assemblées : 96 mm
  • diamètre intérieur des rainures : 82 mm
  • largeur des rainures : 5,1 mm
  • diamètre intérieur des deux premiers logements semi-cylindriques assemblés : 68 mm
  • profondeur des premiers logements semi-cylindriques : 3,6 mm
  • profondeur des seconds logements semi-cylindriques : 9,3 mm
  • diamètre intérieur des deux seconds logements semi-cylindriques assemblés : 52,5 mm
  • diamètre de passage de l'arbre d'hélice : 32 mm
  • épaisseur de la partie de fermeture partielle : 2 mm
By way of nonlimiting example, for the protection of a cable cutter with an external diameter of 80 mm, a protection device according to the first embodiment of the invention may have the following dimensional characteristics:
  • outer diameter of assembled annular half-shells: 96 mm
  • internal diameter of the grooves: 82 mm
  • width of the grooves: 5.1 mm
  • inner diameter of the first two assembled semi-cylindrical housings: 68 mm
  • depth of the first semi-cylindrical housing: 3.6 mm
  • depth of the second semi-cylindrical housings: 9.3 mm
  • inside diameter of the two second assembled semi-cylindrical housings: 52.5 mm
  • diameter of passage of the propeller shaft: 32 mm
  • thickness of the partial closure part: 2 mm

A titre d'exemple non limitatif un dispositif selon le deuxième mode de réalisation, pour un même diamètre externe de coupe-filin de 80 mm, le diamètre extérieur du dispositif de protection peut être de 85 mm et son épaisseur peut être sensiblement homogène de 2 à 3 mm.By way of non-limiting example, a device according to second embodiment, for the same external diameter 80 mm wire cutter, the outer diameter of the protection device can be 85 mm and its thickness can be substantially homogeneous from 2 to 3 mm.

Bien sûr, l'invention n'est pas limitée aux exemples qui viennent d'être décrits et de nombreux aménagements peuvent être apportés à ces exemples sans sortir du cadre de l'invention. En particulier, la structure et la géométrie internes du dispositif de protection peuvent être adaptée à la géométrie spécifique de chaque coupe-filin. De même, la forme extérieure du dispositif de protection peut ne pas être cylindrique.Of course, the invention is not limited to the examples which have just been described and many can be made to these examples without going outside the box of the invention. In particular, the structure and internal geometry of the protective device can be adapted to the specific geometry of each wire cutter. Of the external form of the protective device do not be cylindrical.

Au lieu d'être indépendantes l'une de l'autre, les deux demi-coques reliées par articulation. Si le dispositif est réalisée par moulage, le dispositif peut être moulé d'une seule pièce comprenant les deux demi-coques reliées par l'articulation. L'articulation peut ainsi être moulée simultanément aux demi-coques dans une même matière adaptée. L'articulation peut aussi être un insert inclus lors du moulage des demi-coques.Instead of being independent of one another, two half-hulls connected by articulation. If the device is made by molding, the device can be molded in one piece comprising the two connected half-shells by the articulation. The joint can thus be molded simultaneously with half-shells in the same material adapted. The joint can also be an included insert when molding the half-shells.

Les moyeux de liaison peuvent aussi être d'un autre type qu'un lien dans une gorge périphérique et par exemple comprendre des sangles. La gorge peut ne pas être périphérique et ne s'étendre que sur une partie de l'une ou des deux demi-coques.The connecting hubs can also be from another type that a link in a peripheral groove and for example understand straps. The throat may not be peripheral and only extend to part of one or two half-hulls.

Claims (19)

  1. Protective device (1) for a rope cutter (2) with at least one cutting part (21, 22) and comprising a hub (23) for attachment to a propeller shaft, intended to be mounted on the propeller shaft (6) of a boat with an on-board motor, the device comprising two annular half-shells (1.1, 1.2) provided in order to hold, in the assembled position, said cutting part (21, 22) inside said annular half-shells (1.1, 1.2).
  2. Protective device according to claim 1, for a rope cutter (2) comprising a annular disk (20) comprising a annular disk (20) comprising a circular cutting edge (21) extending radially, characterized in that each annular half-shell (1.1, 1.2) comprises an internal groove (10.1, 10.2) arranged so as to receive said circular cutting edge (21).
  3. Protective device according to claim 2, for a rope cutter (2) also comprising a circular cutting element (22) extending axially from one surface (25) of the annular disk (20) provided to be opposite a stern tube (3), characterized in that each half-shell (1.1, 1.2) also comprises a first semi-cylindrical housing (11.1, 11.2) provided in order to receive said axial circular cutting element (22).
  4. Protective device according to claim 3, characterized in that each first semi-cylindrical housing (11.1, 11.2) has a depth which is appreciably greater than the thickness of the axial circular cutting element (22).
  5. Protective device according to one of claims 3 or 4, characterized in that the two annular half-shells (1.1, 1.2) are thus provided to hold at least part of the attachment hub (23) in the assembled position.
  6. Protective device according to claim 6, characterized in that each half-shell (1.1, 1.2) also comprises a second semi-cylindrical housing (12.1, 12.2) provided in order to receive at least part of the attachment hub (23).
  7. Protective device according to claim 6, characterized in that each second semi-cylindrical housing (12.1, 12.2) is partially closed by means of a annular closing part (14.1, 14.2) extending from the outer periphery of each half-shell (1.1, 1.2).
  8. Protective device according to claim 7, characterized in that each second semi-cylindrical housing (12.1, 12.2) has a determined depth so as to receive the main outer body (26) of the hub (23).
  9. Protective device according to one of claims 7 or 8, characterized in that the annular closing parts (14.1, 14.2) are arranged so as to define an opening (13.1, 13.2) with a sufficient diameter to allow the passage of a propeller shaft.
  10. Protective device according to one of claims 2 to 9, characterized in that the groove (10.1, 10.2) of each half-shell (1.1, 1.2) has a width which is approximately equal to or less than the thickness of the annular disk (20).
  11. Protective device according to any one of the preceding claims, characterized in that at least one of the two half-shells is produced in a single piece.
  12. Protective device according to any one of the preceding claims, characterized in that at least one of the half-shells is produced from a synthetic material.
  13. Protective device according to claim 12, characterized in that the material is low-density polyethylene.
  14. Protective device according to one of claims 7 to 13, characterized in that each first semi-cylindrical housing (11.1, 11.2) is defined by a first annular closing part (15.1, 15.2) extending from the outer periphery of each half-shell (1.1, 1.2) and in that the half-shells are held by the first and second annular closing parts axially clamping the rope cutter.
  15. Protective device according to one of claims 7 or 13, characterized in that the second housing (12.1, 12.2) is provided to abut radially against the hub.
  16. Protective device according to any one of the preceding claims, characterized in that it comprises an articulation connecting the two half-shells.
  17. Protective device according to any one of the preceding claims, characterized in that it has an approximately homogeneous thickness (Ep).
  18. Protective device according to any one of the preceding claims, characterized in that it comprises fasteners (41) for holding the two half-shells together in their position on the rope cutter.
  19. Protective device according to claim 18, characterized in that the fasteners (41) comprise, on an outer surface (40.1, 40.2) of at least one of the half-shells, a channel (42.1, 42.2) and a strap (44) provided to be housed in the channel.
EP03291083A 2002-05-07 2003-05-06 Protection device for cutter Expired - Lifetime EP1361154B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0205675 2002-05-07
FR0205675A FR2839492B1 (en) 2002-05-07 2002-05-07 PROTECTION DEVICE FOR ROPE CUTTER

Publications (2)

Publication Number Publication Date
EP1361154A1 EP1361154A1 (en) 2003-11-12
EP1361154B1 true EP1361154B1 (en) 2005-07-27

Family

ID=29226236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03291083A Expired - Lifetime EP1361154B1 (en) 2002-05-07 2003-05-06 Protection device for cutter

Country Status (5)

Country Link
EP (1) EP1361154B1 (en)
AT (1) ATE300466T1 (en)
DE (1) DE60301082T2 (en)
ES (1) ES2247499T3 (en)
FR (1) FR2839492B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104044718A (en) * 2013-03-12 2014-09-17 张建新 Sawtooth propeller

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246345A (en) * 1992-10-07 1993-09-21 Adams Jr Michael J Boat propeller cover
FR2768120B1 (en) 1997-09-11 2000-03-03 Jean Claude Geron WIRE CUTTER
US6085557A (en) * 1998-08-07 2000-07-11 Kaye, Jr.; Kenneth B. Anti-theft device for marine propellers

Also Published As

Publication number Publication date
FR2839492A1 (en) 2003-11-14
EP1361154A1 (en) 2003-11-12
FR2839492B1 (en) 2004-07-16
ATE300466T1 (en) 2005-08-15
DE60301082T2 (en) 2006-06-08
ES2247499T3 (en) 2006-03-01
DE60301082D1 (en) 2005-09-01

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