EP3988495A1 - Verfahren zur steuerung des betriebs einer capstan-winde und capstan-winde, die ein solches verfahren umsetzt - Google Patents

Verfahren zur steuerung des betriebs einer capstan-winde und capstan-winde, die ein solches verfahren umsetzt Download PDF

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Publication number
EP3988495A1
EP3988495A1 EP21202043.2A EP21202043A EP3988495A1 EP 3988495 A1 EP3988495 A1 EP 3988495A1 EP 21202043 A EP21202043 A EP 21202043A EP 3988495 A1 EP3988495 A1 EP 3988495A1
Authority
EP
European Patent Office
Prior art keywords
cable
drum
capstan
storage drum
winch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21202043.2A
Other languages
English (en)
French (fr)
Other versions
EP3988495B1 (de
Inventor
Ronny DEBEVERE
Sébastien DECREUSEFOND
Thomas THUBET
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.)
Reel SAS
Original Assignee
Reel SAS
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Filing date
Publication date
Application filed by Reel SAS filed Critical Reel SAS
Publication of EP3988495A1 publication Critical patent/EP3988495A1/de
Application granted granted Critical
Publication of EP3988495B1 publication Critical patent/EP3988495B1/de
Active legal-status Critical Current
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
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7405—Capstans having two or more drums providing tractive force
    • B66D1/741—Capstans having two or more drums providing tractive force and having rope storing means
    • 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
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
    • 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
    • B66D1/76—Capstans having auxiliary drums or barrels for storing the ropes or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical

Definitions

  • the invention relates to the field of winches, and more specifically so-called capstan winches.
  • a capstan winch is conventionally made up of one or two traction drums, driven in rotation by means of a motor, generally electric, around the periphery of which a traction cable is wound according to general, a plurality of turns distributed over a single layer. Said cable is then stored on a storage drum, generally adjacent to the capstan, and traditionally with an axis of rotation parallel to the axis of rotation of the capstan, with a view in particular to allowing the storage of long lengths of cables, said drum being moved in rotation by means of a motor, also electric.
  • the well-known advantage of the implementation of a capstan lies in the ability to deploy a particularly strong force, in particular for lifting or hauling high loads.
  • Capstan winches have proven their effectiveness for many years. However, for a certain number of reasons, in particular linked to the nature of the outer surface of the drum(s) which constitute the capstan, the wear of the cable, or the conditions of use, in particular atmospheric (frost or ice on the surface ), it is not uncommon to observe a relative slippage of the cable on the drum or drums of the capstan, and therefore, as a corollary, a reduction in the effectiveness of the traction exerted on the cable and, moreover, in the efficiency of the motor rotating said capstan.
  • the process described in this document does indeed make it possible to achieve the desired result, on the other hand it requires the implementation of an additional device, in this case the device for measuring the cable at the entrance to the winch, typically mounted on a deflection pulley, therefore complicating the resulting winch, and accelerating the wear of the cable due to its passage within the groove of said deflection pulley, notwithstanding the free rotation of the latter.
  • the device described in this document implements, by reason of its mode of operation, a permanent regulation of the torque on the motor actuating the storage drum. In doing so, due to the permanent variations acting on said motor, the wear of the latter is accelerated, and in addition, reliability is lost.
  • the objective sought by the present invention is identical to that which aims to solve these various problems, while simplifying the winch in question.
  • the torque of the motor of the storage drum is fixed at a minimum and constant nominal value.
  • this minimum value is determined according to the number of turns on the capstan drum(s), the minimum coefficient of friction of the peripheral surface of the capstan drum(s) encountered in operation, and the minimum tension necessary to guarantee good winding the cable on the storage drum.
  • the invention no longer consists in adding an additional technical means for determining the relative speeds of the storage drum and the capstan by measuring an additional quantity, but in integrating within the fundamental elements constituting a capstan winch a device capable of simply measuring one of the quantities, in this case the theoretical unwinding length of the cable. In doing so, the management of said winch is considerably simplified.
  • the invention also relates to a capstan winch implementing this method.
  • an encoder is associated with the storage drum, able to deliver information corresponding to the number of rotations performed by said storage drum to management electronics, the latter being able to determine, according to this given the diameter of said storage drum, the diameter of the cable, and the maximum number of turns of cable per layer on said drum, the effective unwinding length of the cable.
  • This management electronics is connected to a management unit of said winch, at which the information relating to the speed of the motor rotating the drum or drums of the capstan ends up, and thus establishes a comparison between the theoretical unwinding length of the cable and the effective length of said unwinding. If a determined threshold is exceeded, the management unit causes the immediate activation of the mechanical brakes acting on the storage drum.
  • the figure 1 is a schematic representation of the capstan winch according to the invention.
  • the figure 1 clearly shows schematically, on the one hand the storage drum (2), and on the other hand the drum, in this case unique, constituting the capstan (4) with which the winch of the invention is provided.
  • the respective axes of rotation of the storage drum and of the capstan are parallel to each other.
  • the storage drum (2) is rotated by means of a first electric motor (3).
  • the capstan (4) is rotated by means of a second motor (5), also electric.
  • the electric motor (5) of the capstan is much more powerful, insofar as said capstan provides traction on the load (7).
  • the electric motor (3) of the storage drum develops significantly less power, since it is also only intended to provide a counterforce necessary for operation in order in particular to ensure a orderly winding of the cable on the storage drum, without participating in the traction of said load.
  • One of the ends of the cable (6) is mechanically fixed to the storage drum (2), so that there can be no slippage of the said cable at the level of the said storage drum.
  • the other free end of the cable receives a load (7), intended to be winched by means of the winch of the invention.
  • the electric motor (3) of the storage drum (2) is required to operate at a constant minimum nominal torque. In doing so, even under conditions likely to favor the sliding of the cable on the drum or drums of the capstan (4), for example due to the covering of the peripheral surface of the drum or drums of the capstan with a layer of frost or ice , there is always a tension T 1 exerted by the storage drum (2) on the cable strand (8) separating the storage drum (2) from the capstan (4) sufficient to ensure correct unwinding and winding said cable on said storage drum (2).
  • This provides a permanent and sufficient tension of the cable strand (8), to ensure correct operation of the winding screw, and as a corollary an orderly winding of the cable on the storage drum.
  • an encoder (1) which makes it possible to precisely determine the number of revolutions carried out by the storage drum ( 2).
  • This information is communicated to management electronics, programmed to determine, due to the knowledge of the diameter of said storage drum, the diameter of the cable and the number of turns of cables per layer of said storage drum, the theoretical unwinding length of the cable (6). This theoretical length constitutes one of the two values intended to be compared in accordance with the method of the invention.
  • the cable is wound around the capstan (4) of which, again, the outer diameter is known. It is known that the ratio of the tensions of the cable strand (8) to the tension resulting from the load (7) on the cable (6) is directly dependent, on the one hand, on the number of winding turns of the cable on the capstan (4), and on the other hand of a coefficient of friction of the cable on the periphery of said capstan, coefficient likely to vary according to the conditions of use of the winch, the wear of the cable or the external surface of the capstan (see relationship above).
  • the method according to the invention determines the theoretical unwinding length of the cable by determining the speed of the motor ( 5) ensuring the rotation of said capstan. A simple integration over time of this speed makes it possible to determine the theoretical unwinding length of the cable.
  • a resulting value is determined which is compared with a determined threshold, stored in a management unit (not shown ) of said winch. If this value exceeds a determined threshold, said management unit immediately generates the actuation of the brakes, mechanical in this case, on the storage drum (2), and therefore the blocking of the cable, for obvious safety reasons.
  • the thermal behavior and the lifetime of the motor of the storage drum are also optimized, although operating at minimum torque, simply by sufficient dimensioning of its power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Unwinding Of Filamentary Materials (AREA)
EP21202043.2A 2020-10-26 2021-10-12 Verfahren zur steuerung des betriebs einer capstan-winde und capstan-winde, die ein solches verfahren umsetzt Active EP3988495B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2010940A FR3115531A1 (fr) 2020-10-26 2020-10-26 Procede pour controler le fonctionnement d’un treuil a cabestan et treuil a cabestan mettant en œuvre un tel procede

Publications (2)

Publication Number Publication Date
EP3988495A1 true EP3988495A1 (de) 2022-04-27
EP3988495B1 EP3988495B1 (de) 2023-09-06

Family

ID=74183344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21202043.2A Active EP3988495B1 (de) 2020-10-26 2021-10-12 Verfahren zur steuerung des betriebs einer capstan-winde und capstan-winde, die ein solches verfahren umsetzt

Country Status (3)

Country Link
EP (1) EP3988495B1 (de)
ES (1) ES2960792T3 (de)
FR (1) FR3115531A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234167A (en) * 1978-08-18 1980-11-18 Otis Engineering Corporation Automatic inhaul winch system
FR2843954A1 (fr) * 2002-08-28 2004-03-05 Kley France Dispositif de regulation de tension de cable sur un enrouleur de cable cooperant avec un treuil, notamment un treuil du type dit a cabestan
EP3319899A1 (de) 2015-07-07 2018-05-16 JENOPTIK Advanced Systems GmbH Seilwinde, verfahren zum steuern eines betriebs einer seilwinde und verfahren zum betreiben einer seilwinde

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234167A (en) * 1978-08-18 1980-11-18 Otis Engineering Corporation Automatic inhaul winch system
FR2843954A1 (fr) * 2002-08-28 2004-03-05 Kley France Dispositif de regulation de tension de cable sur un enrouleur de cable cooperant avec un treuil, notamment un treuil du type dit a cabestan
EP3319899A1 (de) 2015-07-07 2018-05-16 JENOPTIK Advanced Systems GmbH Seilwinde, verfahren zum steuern eines betriebs einer seilwinde und verfahren zum betreiben einer seilwinde

Also Published As

Publication number Publication date
ES2960792T3 (es) 2024-03-06
EP3988495B1 (de) 2023-09-06
FR3115531A1 (fr) 2022-04-29

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