EP2980003B1 - Winde mit einer kabelführungseinrichtung - Google Patents

Winde mit einer kabelführungseinrichtung Download PDF

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Publication number
EP2980003B1
EP2980003B1 EP15179102.7A EP15179102A EP2980003B1 EP 2980003 B1 EP2980003 B1 EP 2980003B1 EP 15179102 A EP15179102 A EP 15179102A EP 2980003 B1 EP2980003 B1 EP 2980003B1
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EP
European Patent Office
Prior art keywords
cable
pulling drum
guiding device
longitudinal axis
roller
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.)
Active
Application number
EP15179102.7A
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English (en)
French (fr)
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EP2980003A1 (de
Inventor
Michele Cazzaro
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.)
Harken Italy SpA
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Harken Italy SpA
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Publication date
Application filed by Harken Italy SpA filed Critical Harken Italy SpA
Publication of EP2980003A1 publication Critical patent/EP2980003A1/de
Application granted granted Critical
Publication of EP2980003B1 publication Critical patent/EP2980003B1/de
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Anticipated expiration legal-status Critical

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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
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B66D1/38—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of guides movable relative to drum or barrel

Definitions

  • the present invention refers to a captive winch, preferably but not exclusively intended for the nautical field.
  • winches In cable collecting winches, also known as captive winches, the recovered cable is entirely collected and wound on the drum of the winch.
  • winches are normally motorized and are capable of supporting static and dynamic loads that are even quite heavy (even greater than 20 tons). In the nautical field, for example, these are typically employed for driving sheets on sailboats of large size.
  • the captive winches essentially comprise a pulling drum which can be rotatably operated around a respective longitudinal axis to wind/unwind the cable and a cable-guiding device in order to guide the winding/unwinding of the cable on the pulling drum.
  • the cable-guiding device ensures that the cable is distributed on the pulling drum in a uniform manner.
  • the cable-guiding device avoids overlapping which can obstruct a subsequent driving of the winch and/or damage the cable.
  • the cable-guiding device is kinematically connected with the pulling drum in such a way that a complete rotation of the pulling drum corresponds to a movement of the cable-guiding device along a direction parallel to the longitudinal axis of the pulling drum for a section of a predetermined length, typically equal to the diameter of the cable to be wound/unwound.
  • the cable-guiding device is arranged side-by-side the pulling drum and comprises a screw-nut assembly, wherein the screw is arranged parallel to the pulling drum and kinematically connected thereto by means of a gear or chain/belt transmission; the nut screw supports a guide element.
  • the pulling drum is provided with a helical groove at its external surface and the cable-guiding device - arranged side-by-side the pulling drum - comprises a slider element that is engaged with such helical groove and is free to translate along a guide track parallel to the longitudinal axis of the pulling drum.
  • the cable-guiding device - arranged side-by-side the pulling drum - comprises a slider element that is engaged with such helical groove and is free to translate along a guide track parallel to the longitudinal axis of the pulling drum.
  • a further structural solution described in EP 2 151 411 A1 , which discloses a winch according to the preamble of claim 1, provides that the pulling drum and the cable-guiding device form a screw-nut assembly, in which more precisely the pulling drum and the cable-guiding device are the screw and the nut screw respectively; therefore the cable-guiding device completely surrounds the pulling drum.
  • Object of the present invention is to provide a captive winch which ensures the capacity of supporting very heavy loads.
  • a captive winch according to claim 1 Preferred features of such captive winch are set forth in the dependent claims. More particularly, a captive winch according to the invention comprises:
  • the winch is thus capable of supporting axial loads that are even very heavy, thanks to the shoulder resting just on the side of the pulling drum. Indeed, the load in axial direction on the cable under traction generates a thrust that tends to force the cable-guiding device towards the pulling drum, in radial direction with respect thereto; the presence of the supporting shoulder that rests directly on the side of the pulling drum allows distributing this radial load between the guide track and the resting on the side of the pulling drum.
  • the supporting shoulder comprises at least one roller, with which the shoulder rests on the side of the pulling drum.
  • the roller ensures a wide and safe support, with relatively limited contact pressures; two or more rollers can be provided, side-by-side or successive, in order to supply a greater distribution of the stresses.
  • the roller has a rotation axis which is tilted at an angle with respect to the longitudinal axis.
  • the angle coincides with the winding angle imposed on the cable by the cable-guide, translated by the transmission which connects it to the rotation of the pulling drum.
  • This angle will be such to orient the rolling direction of the roller substantially according to the winding direction of the cable, in such a way that lateral sliding of the roller is avoided, which under load would be a source of friction such to obstruct the rotation of the pulling drum, increasing the stresses.
  • the roller can be self-aligning, i.e. freely mounted to be oriented according to the stresses applied thereto (by the cable).
  • the cable-guiding device comprises at least one return pulley for the cable, in order to guide the orientation of the cable with low friction from the arrival direction in the cable-guiding device (direction which can also be completely axial) to the winding direction on the pulling drum, tangential to the pulling drum.
  • the roller and the return pulley are arranged in such a way that a plane P, which is orthogonal to the longitudinal axis A and passes through a center K of the roller, contains the rotation axis C of the return pulley, in such a way that the resulting force discharged by the cable and not supported by the other supports of the cable-guiding device (guide track and transmission) is discharged on the center of the roller.
  • a plane P which is orthogonal to the longitudinal axis A and passes through a center K of the roller, contains the rotation axis C of the return pulley, in such a way that the resulting force discharged by the cable and not supported by the other supports of the cable-guiding device (guide track and transmission) is discharged on the center of the roller.
  • the winch comprises a transmission between the pulling drum and the cable-guiding device, such that with a rotation of 360° of the pulling drum, there is a corresponding movement of the cable-guiding device along the guide track for a length section corresponding to the winding pitch of the cable on the pulling drum.
  • the loads provided on the cable are very heavy, the synchronization assured by such a transmission reduces sliding and consequent friction, which would further increase the stresses.
  • the supporting shoulder can be rested on the side of the pulling drum downstream and/or upstream of a winding position of the cable on the pulling drum.
  • a downstream support will be preferable, i.e. directly on the pulling drum, so as not to involve the cable.
  • an upstream support could be provided, i.e. on the cable already wound on the pulling drum, so as to minimize the bulk in axial direction; if maximum support is desired, a support upstream and one downstream could be provided, so as to have two resting areas on the two sides of the cable that is wound, i.e. of the area where the thrust of the cable-guiding device against the pulling drum is concentrated.
  • the winding of the cable on the pulling drum proceeds from the end of the pulling drum which is remote with respect to the traction direction of the cable.
  • reference number 1 overall indicates a captive winch according to the invention.
  • the winch 1 essentially comprises a pulling drum 10 , which can be rotatably operated by means of motor means 11 around a longitudinal axis A to wind/unwind a cable 2 (represented in section in figure 2 and only schematically in figure 1 , so as to allow an improved visibility of the parts at the back) subjected to traction and axially oriented (i.e. in a direction parallel to the longitudinal axis A), and a cable-guiding device 20 , arranged side-by-side the pulling drum and adapted to guide the winding/unwinding of the cable 2 on the pulling drum 10.
  • the pulling drum 10 and the cable-guiding device 20 are preferably mounted on a frame 30 essentially comprising a base 31 and support walls 32 for the pulling drum 10 and for the motor means 11.
  • the base 31 can be suitably configured in accordance with the mounting requirements of the winch 1.
  • the support walls 32 are adapted to rotatably support the pulling drum 10 at its opposite longitudinal ends 12 and 13 , in such a way that the longitudinal axis A lies substantially parallel to the base 31.
  • the motor means 11 typically electric or hydraulic and in any case of known type, are provided at the single longitudinal end 13 of the pulling drum 10.
  • motor means could be provided at both ends, in order to reduce the stresses on the pulling drum 10, especially the twisting stresses during the winding of the cable 2 when the latter is subject to a high tension.
  • the cable-guiding device 20 is slidably mounted on the frame 30 in a direction parallel to the longitudinal axis A, alongside the pulling drum 10.
  • the cable-guiding device 20 comprises a body 21 , slidably engaged along a fixed guide track 33 arranged in the frame 30 of the winch 1, in a position parallel to the longitudinal axis A of the pulling drum 10 and spaced therefrom.
  • the cable-guiding device 20 comprises a return pulley 22 of the cable 2, rotatably and idly mounted in the body 21 around a pin 23 , arranged according to a rotation axis C , perpendicular to and not coplanar with the longitudinal axis A, as shown in the drawings.
  • the cable 2 during the winding, enters into the pulley 22 from an axial direction parallel to the longitudinal axis A and exits therefrom in a direction towards the pulling drum 10.
  • the return pulley 22 has a peripheral groove 24 , of section suitable for receiving the cable 2, and is arranged with its centerline plane M substantially tangent to the pulling drum 10, in such a way that the cable 2 exiting from the return pulley 22 and during winding/unwinding on the pulling drum 10 does not stress the sides of the groove 24.
  • the pulling drum 10 and the cable-guiding device 20 are kinematically connected with each other with a prefixed timing, such that with every rotation of 360° of the pulling drum 10, there is a corresponding movement of the cable-guiding device 20 along a direction parallel to the longitudinal axis A of the pulling drum 10 for a predetermined length section, equal to the winding pitch of the cable 2 on the pulling drum 10; typically, this pitch is equal to the diameter of the cable 2.
  • a transmission 40 is provided.
  • the transmission 40 comprises a pair of identical threaded bars 41 , rotatably supported on the walls 32 of the frame 30 in a position parallel to the longitudinal axis A, and a corresponding pair of threaded bushings 42 fixedly mounted in the body 21 of the cable-guiding device 20.
  • a gear train 43 kinematically connects the pulling drum 10 and the bars 41. The pitch of the threads of the bars 41 and the transmission ratio of the gear train 43 are selected in such a way as to obtain the desired timing between the rotation of the pulling drum 10 and the translation of the cable-guiding device 20.
  • the cable-guiding device 20 also comprises a supporting shoulder 25 , which is fixed on the body 21 and is provided with a roller 26 , idly mounted; the supporting shoulder 25 is rested on a side 14 of the collection roller 10 by means of the roller 26.
  • the roller 26 has a rotation axis D , which is tilted with respect to the longitudinal axis A and is not coplanar thereto; in addition, the roller 26 has a center K equidistant from the opposite ends of the roller.
  • the tilt angle ⁇ of the rotation axis D with respect to the longitudinal axis A is prefixed, in such a way as to orient the rolling direction of the roller 26 substantially according to the winding direction of the cable 2 on the pulling drum 10, so as to avoid lateral sliding of the roller 26 on the side 14 of the pulling drum 10.
  • the positioning on the body 21 of the cable-guiding device 20 and of the return pulley 22 is such that a plane P , which is orthogonal to the longitudinal axis A and passes through the center K of the roller 26 (i.e. the plane of fig. 2 ), contains the rotation axis C of the return pulley 22.
  • the supporting shoulder 25 is rested -by means of its roller 26- on the side 14 of the pulling drum 10; the support area is preferably downstream of the winding position of the cable 2 on the pulling drum 10, in such a way that the resting occurs directly on the pulling drum 10 and not on the cable 2 wound thereon.
  • the winding of the cable 2 on the pulling drum 10 proceeds from the end 12 of the pulling drum 10 which is remote with respect to the traction direction of the cable 2 towards the other and 13.
  • the materials for the above-described components can be selected based on the use provided for the winch 1. For example, for nautical use, light and saline corrosion resistant materials are preferred.
  • the pulling drum 10 and/or the cable-guiding device 20 are preferably made of light metallic alloys, e.g. aluminum alloys that have been surface-treated against saline corrosion.
  • one or both such components can be made of composite material, e.g. of carbon fiber in a polymer matrix.
  • the cable 2 is wound and unwound on the pulling drum 10 by driving the motor means 11, which control both the rotation of the pulling drum 10 and the rotation of the threaded bars 41; the rotation of these threaded bars 41, thanks to the engagement with the threaded bushings 42, causes the translation of the cable-guiding device 20 along the guide track 33, with the desired timing with respect to the rotation of the pulling drum 10.
  • the stress imparted by the tension of the cable 2 (in axial direction, according to the longitudinal axis A) is discharged on the return pulley 22 and from this on the cable-guiding device assembly 20, hence tending to thrust the cable-guiding device 20 radially towards the pulling drum 10.
  • the winch 1 has a preferred, though not exclusive, use for driving sheets on boats of large size, especially sailboats but also motorboats.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Claims (10)

  1. Auftrommelnde Winsch, umfassend:
    - eine Ziehtrommel (10), die um eine entsprechende Längsachse (A) drehbar betätigt werden kann, um ein aus einer im Wesentlichen parallel zur Längsachse (A) der Ziehtrommel (10) liegenden Richtung unter Zug stehendes Seil (2) auf- bzw. abzuwickeln,
    - eine parallel zur Längsachse (A) liegende und von ihr beabstandete Führungsbahn (33), und
    - eine Seilführungseinrichtung (20), die Seite-an-Seite mit der Ziehtrommel (10) angeordnet ist und einen Korpus (21) umfasst, der längs der Führungsbahn (33), die parallel zur Längsachse (A) liegt, verschiebbar in Eingriff genommen wird und zur Translation auf der Führungsbahn (33) bei Drehung der Ziehtrommel (10) eingerichtet ist, um das Aufwickeln/Abwickeln des Seils (2) auf die/von der Ziehtrommel (10) auf einer ihrer Seiten (14) zu führen,
    dadurch gekennzeichnet, dass die Seilführungsvorrichtung (20) eine Stützschulter (25) aufweist, die auf der Seite (14) der Ziehtrommel (10) ruht.
  2. Winsch nach Anspruch 1, wobei die Stützschulter (25) mindestens eine Rolle (26) umfasst, mit der die Stützschulter (25) auf der Ziehtrommel (10) ruht.
  3. Winsch nach Anspruch 2, wobei die mindestens eine Rolle (26) eine Drehachse (D) aufweist, die in einem voreingestellten Winkel (α) in Bezug auf die Längsachse (A) geneigt ist.
  4. Winsch nach Anspruch 3, wobei der voreingestellte Winkel (α) dem Wickelwinkel des Seils (2) auf der Ziehtrommel (10) entspricht.
  5. Winsch nach einem beliebigen der Ansprüche 2 bis 4, wobei die mindestens eine Rolle mindestens zwei Rollen umfasst, die Seite-an-Seite oder aufeinander ausgerichtet angeordnet sind.
  6. Winsch nach einem beliebigen der Ansprüche 2 bis 5, wobei die mindestens eine Rolle selbstausrichtend ist.
  7. Winsch nach einem beliebigen der vorstehenden Ansprüche, wobei die Seilführungsvorrichtung (20) mindestens eine Umlenkrolle (22) für das Seil (2) umfasst.
  8. Winsch nach Anspruch 7, sofern abhängig von Anspruch 2, wobei die mindestens eine Rolle (26) und die Umlenkrolle (22) derart angeordnet sind, dass eine Ebene (P), die rechtwinklig zur Längsachse (A) liegt und durch einen Mittelpunkt (K) der Rolle (26) hindurchgeht, die Drehachse (C) der Umlenkrolle (22) enthält.
  9. Winsch nach einem beliebigen der vorstehenden Ansprüche, wobei die Stützschulter (25) auf der Seite (14) der Ziehtrommel (10) stromabwärts einer Wickelposition des Seils (2) auf der Ziehtrommel (10) ruht.
  10. Winsch nach einem beliebigen der vorstehenden Ansprüche, wobei die Stützschulter auf der Seite (14) der Ziehtrommel stromaufwärts einer Wickelposition des Seils auf der Ziehtrommel ruht.
EP15179102.7A 2014-07-30 2015-07-30 Winde mit einer kabelführungseinrichtung Active EP2980003B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20141389 2014-07-30

Publications (2)

Publication Number Publication Date
EP2980003A1 EP2980003A1 (de) 2016-02-03
EP2980003B1 true EP2980003B1 (de) 2016-11-30

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ID=51663244

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Application Number Title Priority Date Filing Date
EP15179102.7A Active EP2980003B1 (de) 2014-07-30 2015-07-30 Winde mit einer kabelführungseinrichtung

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EP (1) EP2980003B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10315894B2 (en) 2017-01-30 2019-06-11 Cameron Anderson Winch fairlead guide

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1973446A (en) * 1934-01-23 1934-09-11 Brer A E Resenquist Cable guiding device
US2926867A (en) * 1955-11-21 1960-03-01 Breeze Corp Winch
DE1156212B (de) * 1959-08-08 1963-10-24 Asea Ab Selbsttaetige Seilfuehrung
JPS5935504Y2 (ja) * 1980-02-19 1984-10-01 日本ビクター株式会社 昇降機
ATE529370T1 (de) 2008-08-07 2011-11-15 Harken Italy Spa Kabelaufrollwinde
KR101320123B1 (ko) * 2011-11-29 2013-10-18 현대제철 주식회사 와이어 유도장치
DE102012003855A1 (de) * 2012-02-29 2013-08-29 Db Netz Ag Seilwinde

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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