EP3042875B1 - Treuil pour la foresterie, machines agricoles et similaires - Google Patents

Treuil pour la foresterie, machines agricoles et similaires Download PDF

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Publication number
EP3042875B1
EP3042875B1 EP16150677.9A EP16150677A EP3042875B1 EP 3042875 B1 EP3042875 B1 EP 3042875B1 EP 16150677 A EP16150677 A EP 16150677A EP 3042875 B1 EP3042875 B1 EP 3042875B1
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EP
European Patent Office
Prior art keywords
rope
drum
control lever
winding
hydraulic motor
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
EP16150677.9A
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German (de)
English (en)
Other versions
EP3042875A1 (fr
Inventor
Andrea Ricca
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.)
Ricca Andrea and C SNC
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Ricca Andrea and C SNC
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Publication date
Application filed by Ricca Andrea and C SNC filed Critical Ricca Andrea and C SNC
Publication of EP3042875A1 publication Critical patent/EP3042875A1/fr
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Publication of EP3042875B1 publication Critical patent/EP3042875B1/fr
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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
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • 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
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/006—Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction

Definitions

  • the present invention regards a winch for forestry machines, agricultural machines and the like, particularly for vertical and horizontal wood cutting machines.
  • winches applied to machines thus made have the function of being able to move heavy loads such as for example trunks or stumps to be cut, to machine the operating area.
  • these winches typically comprise a drum for winding and unwinding a rope that can be connected to the load.
  • a rotary hydraulic motor actuates - with the shaft thereof - the drum, through a hydraulic distributor in turn actuated by a manual control lever or a remote control displaceable to a position for unwinding or winding the rope from opposite sides with respect to a central hydraulic motor stop position.
  • the known winches of this type currently available in the market for the aforementioned applications, use electrical contacts for stopping the rotation of the drum both in the step of unwinding and winding the rope, or sophisticated stop mechanisms that usually act in a single direction of displacement of the rope.
  • the known winches are prone to erroneous manoeuvre on the hydraulic distributor control lever by the operator, with the risk of entanglement of the rope during the unrolling step or even the snapping of the rope at the point of fixing to the drum.
  • EP1832454 discloses a winch for a snow grooming machine with an electrical control unit.
  • DE1116463 describes the use of a automatic winch stop arrangement that is activated as soon as the hook reaches a certain distance to the lifting boom.
  • US-4358088A discloses a vehicular-mounted winch operated by the P.T.O. of the vehicle through an input shaft which drives a main shaft through a controllable clutch, an automatic one-way clutch and a controllable brake.
  • EP-2363371A1 and US-4884783A are also disclosing winches operated by a motor through a hydraulic coupling or clutch.
  • the object of the present invention is to overcome the aforementioned drawbacks simultaneously attaining the advantages in terms of small overall dimensions, low costs as well as ease and reliability of use even due to the absence electrical components of any kind.
  • the winding of the rope by the winch is allowed in only one direction of rotation of the drum, without the possibility of erroneous manoeuvre by the operator.
  • the unwinding of the rope i.e. the unrolling thereof from the drum can be exclusively carried out by pulling the rope manually.
  • the lever is provided with a sliding engagement member in which the rope can be engaged in a releasable fashion when the latter is pulled manually to be unwound from the drum, so as to control the positioning of the hydraulic distributor in the aforementioned unwinding position.
  • the hydraulic distributor is positioned automatically in the hydraulic motor stop position at the end of the rewinding of the rope on the drum, without requiring the actuation of the relative control lever.
  • a support structure of the upright type of a wood cutting machine to which a winch according to the invention is applied is indicated with 1. It should be observed that the illustrated arrangement is provided purely by way of example, in that the winch according to the invention could be applied to machines of any kind, for example forestry machines, agricultural machines and industrial machines.
  • the winch 2 comprises a rotary hydraulic motor 3 whose shaft 4 actuates a drum 5 for the winding and unwinding of a rope or cable 6, for example provided with a hook 7 at an end thereof.
  • the shaft 4 of the hydraulic motor 3 is coupled to the drum 5 through a one-way engagement means for example constituted by a free wheel 8 which makes them mutually joined in rotation only in the direction corresponding to the winding of the rope 6 on the drum 5.
  • the hydraulic motor 3 is actuated through a hydraulic distributor generally indicated with 9, also fixed to the support structure 1, or fixed on a different point.
  • the hydraulic distributor 9 consists, in a generally conventional manner, in a spool valve displaceable, from opposite sides with respect to a central stop position of the hydraulic motor 3, respectively in a position for unwinding or winding the rope 6 relatively to the drum 5.
  • the control lever 10 is provided with an engagement member 11, in form of an open ring, in which the rope 6 is slidably engaged in a releasable fashion during the unwinding thereof 5, according to the methods described hereinafter.
  • the rope 6 extends into an inclined tubular arm 12 of the support structure 1 bearing - at the end thereof - a return pulley 13 to which there is articulated a guide member 14 of the rope 6.
  • Such guide member 14 is freely rotatable between the lowered position represented in figures 1 and 2 and the raised position in figure 8 , corresponding to the complete winding of the rope 6 on the drum 5, in which the guide member 14 is aligned with the section of the rope 6 extending into the tubular arm 12.
  • the pulley 13 is carried by the tubular arm 12 by interposing a calibrated resilience group 15, for example constituted by disc springs, and it bears a bracket 16 to which there is connected the sheath 17 of a flexible cable transmission 18 whose one end is anchored in 19 to the end of the tubular arm 12, as better observable in figure 3 .
  • the other end of the cable 18, indicated with 20, is anchored to a side of the spool of the hydraulic distributor 9 to execute the function to be outlined hereinafter.
  • the winch according to the invention operates as follows.
  • the hook 7 shall be firstly pulled manually and the control lever 10 of the hydraulic distributor 9 shall be simultaneously moved from the central neutral position or towards the right, i.e. in position A, so as to unwind the rope 6 from the drum 5 initially for a short section, so as to insert such rope 6 into the sliding engagement member 11 of the control lever 10 of the distributor 9, as represented in figure 7 .
  • the free wheel 8 decouples the drum 5 from the hydraulic motor 2 thus, were the operator to simply actuate the lever 10 in the direction corresponding to the unwinding of the rope 6 (towards the right with respect to the central position) the drum 5 would remain stationary, thus avoiding the risk of entanglement of the rope 6 in the tubular arm 12.
  • the rope 6 After unrolling the rope 6 for the required length and after anchoring it through the hook 7 to the load to be transferred, the rope 6 is removed from the engagement member 11 of the lever 10 and thus the latter may be displaced manually by the operator towards the left with respect to the central position, to be positioned in the rewinding position indicated with B in figure 1 .
  • the drum 5 thus controlled in rotation by the hydraulic motor 2 rewinds the rope 6 up to positioning the load at the operating position of the machine.
  • the operator may once again actuate the control lever 10 by moving it towards the left in the winding position B, to complete the total recovery of the rope 6.
  • the hook 7 intercepts the guide member 14, thus causing the rotation thereof from the lowered position of figures 1 and 2 to the raised position of figure 8 in which, as mentioned, the guide member 14 is aligned with the tubular arm 12.
  • the pull pressure applied to the rope 6 causes the compression of the resilient group 15, as represented in figure 9 , and the ensuing lowering of the bracket 17 due to which the cable transmission 17 automatically returns, i.e. without requiring the actuation of the control lever 10, the hydraulic distributor 9 in the central position for stopping the hydraulic motor 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Control Devices (AREA)

Claims (5)

  1. Treuil pour machines de foresterie, machines agricoles et similaires, comprenant un tambour (5) pour l'enroulement et le déroulement d'un câble (6) prévu pour être raccordé à une charge, et un moteur hydraulique rotatif (3) dont l'arbre (4) entraîne le tambour (5) par le biais d'un distributeur hydraulique (9) ayant un levier de commande manuel, ou bien une commande à distance ou une commande électrique (10), déplaçable dans une position de déroulement ou dans une position d'enroulement sur les côtés opposés par rapport à une position d'arrêt centrale du moteur hydraulique (3), caractérisé en ce que l'arbre (4) du moteur hydraulique (3) est couplé audit tambour (5) par le biais d'un moyen de mise en prise à une voie (8) rendant ledit arbre (4) et ledit tambour (5) fixes en rotation entre eux uniquement dans la direction correspondant à l'enroulement du câble (6) sur le tambour (5), et comprenant une structure de support (1, 12) supportant une poulie de renvoi (13) et un élément (14) pour guider le câble (6) qui oscille, à la fin de l'enroulement dudit câble (6) sur le tambour (5), d'une position abaissée à une position levée afin de commander, au moyen d'une transmission de câble souple (17, 18) raccordée de manière opérationnelle audit distributeur (9), l'arrêt du moteur hydraulique (3) sans avoir à actionner ledit levier de commande (10).
  2. Treuil selon la revendication 1, caractérisé en ce que ledit moyen de mise en prise à une voie se compose d'une roue libre (8).
  3. Treuil selon la revendication 1 ou 2, caractérisé en ce que ledit élément de guidage (14) dans ladite position levée, actionne ladite transmission de câble (17, 18), suite à la traction du câble (6), par le biais d'un moyen résilient calibré (15).
  4. Treuil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit levier de commande (10) est configuré pour être déplacé par le câble (6) dans ladite position de déroulement.
  5. Treuil selon la revendication 4, caractérisé en ce que ledit levier de commande (10) est prévu avec un élément coulissant de mise en prise (11) amovible du câble (6) lorsque ce dernier est tiré manuellement pour se dérouler du tambour (5), afin de déplacer le levier de commande (10) dans ladite position de déroulement.
EP16150677.9A 2015-01-08 2016-01-08 Treuil pour la foresterie, machines agricoles et similaires Active EP3042875B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20150011 2015-01-08

Publications (2)

Publication Number Publication Date
EP3042875A1 EP3042875A1 (fr) 2016-07-13
EP3042875B1 true EP3042875B1 (fr) 2017-12-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024077362A1 (fr) * 2022-10-11 2024-04-18 Costa Luiz Henrique Ensemble amplificateur pour treuils électriques ou similaires

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3988494A1 (fr) * 2020-10-21 2022-04-27 Pisek - Vitli Krpan, d.o.o. Treuil forestier doté d'un commutateur d'arrêt mécanique
EP4089045B1 (fr) * 2021-05-12 2025-08-06 Suffel Fördertechnik GmbH & Co. KG Procédé permettant de faire fonctionner un treuil forestier et treuil forestier
SI26289A (sl) * 2021-12-20 2023-06-30 PIŠEK - VITLI KRPAN, d.o.o. Mehanski vitel z mehanskim stikalom za prekinitev navijanja vrvi na boben vitla
SI26365A (sl) * 2022-06-17 2023-12-29 Tajfun Planina Proizvodnja Strojev, D.O.O. Pomožni vitel, zlasti za uporabo na mobilnem hidravličnem dvigalu, in mobilno hidravlično dvigalo, opremljeno s tovrstnim vitlom

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116364B (de) * 1959-05-13 1961-11-02 Anton Lang Vorrichtung zum Endabschalten von elektrischen Seilwinden, insbesondere von Kleinelektrozuegen
EP1832545A2 (fr) * 2006-03-09 2007-09-12 Kässbohrer Geländefahrzeug AG Fléche munie d un treuil pour un véhicule tout comme un véhicule destiné au couplage et/ou au découplage d'un dispositif d'ancrage sur un élément d'ancre fixe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088305A (en) * 1976-12-17 1978-05-09 Caterpillar Tractor Co. Brake-one way winch
US4358088A (en) * 1980-10-14 1982-11-09 Paccar Of Canada Ltd. Winch drive and braking mechanism
US4884783A (en) * 1988-02-12 1989-12-05 Thorn, Inc. Hoist with oil cooled brake
US5398911A (en) * 1991-11-15 1995-03-21 Pace Engineering Pty. Limited Winch assembly
NL2004316C2 (nl) * 2010-03-01 2011-09-05 Vme B V Van Meerwijk Entpr Lier met hydraulische koppeling.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116364B (de) * 1959-05-13 1961-11-02 Anton Lang Vorrichtung zum Endabschalten von elektrischen Seilwinden, insbesondere von Kleinelektrozuegen
EP1832545A2 (fr) * 2006-03-09 2007-09-12 Kässbohrer Geländefahrzeug AG Fléche munie d un treuil pour un véhicule tout comme un véhicule destiné au couplage et/ou au découplage d'un dispositif d'ancrage sur un élément d'ancre fixe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024077362A1 (fr) * 2022-10-11 2024-04-18 Costa Luiz Henrique Ensemble amplificateur pour treuils électriques ou similaires

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