EP4074648A1 - Éjecteur pour un treuil forestier - Google Patents

Éjecteur pour un treuil forestier Download PDF

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Publication number
EP4074648A1
EP4074648A1 EP22159968.1A EP22159968A EP4074648A1 EP 4074648 A1 EP4074648 A1 EP 4074648A1 EP 22159968 A EP22159968 A EP 22159968A EP 4074648 A1 EP4074648 A1 EP 4074648A1
Authority
EP
European Patent Office
Prior art keywords
ejector
roller
pressure roller
cable
driven
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.)
Pending
Application number
EP22159968.1A
Other languages
German (de)
English (en)
Inventor
Michael WILLENBÜCHER
Claus Hofmann
Bernward Welschof
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.)
Suffel Foerdertechnik GmbH and Co KG
Original Assignee
Suffel Foerdertechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suffel Foerdertechnik GmbH and Co KG filed Critical Suffel Foerdertechnik GmbH and Co KG
Publication of EP4074648A1 publication Critical patent/EP4074648A1/fr
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
    • B66D2700/0191—Cable guiding during winding or paying out

Definitions

  • the invention relates to an ejector for a forestry winch, the ejector having a rotatable ejector roller over which a plastic cable is guided and deflected.
  • a plastic cable is a fabric cable made from a dimensionally unstable, flexible plastic thread structure, which has the advantage of being lighter than a steel cable. Furthermore, a plastic rope is insensitive when it is wound up on the rope drum of the forestry winch without any force and enables smaller deflection radii.
  • a significant advantage of forestry cable winches with a plastic cable compared to forestry cable winches with a steel cable is the significantly reduced weight of the plastic cable, which means that when the plastic cable is unwound, result in low load-bearing forces for the rope carrying of the plastic rope for the operator.
  • the object of the present invention is to provide an ejector for a forestry winch that is suitable for a plastic cable and avoids the disadvantages mentioned.
  • the ejector has at least one rotatable pressure roller which is driven by a drive motor and by means of which the plastic cable is pressed onto the ejector roller.
  • the idea according to the invention is therefore not to drive the ejector roller in a forestry cable winch with a plastic cable, but to actively drive a rotatable pressure roller by means of a drive motor, which presses the plastic cable onto the ejector roller, so that the axial forces and thus the cable tension on the plastic cable are not caused by a drive the ejector roller, but are transmitted to the plastic cable by a drive of the pressure roller and generated on the plastic cable.
  • the pressure roller driven by the drive motor thus presses the plastic cable onto the ejector roller and generates the axial force on the plastic cable.
  • the driven pressure roller with which the required axial forces are transmitted to the plastic cable, makes it possible to design the ejector roller as a steel roller, which only has to assume the function of a deflection roller for deflecting the plastic cable. Since the having the function of the deflection roller Ejector roller has to transmit the high nominal operating forces, the ejector roller is advantageously designed as a stable steel roller.
  • the pressure roller has a rubberized surface, by means of which the pressure roller lies against the plastic cable.
  • a rubberized surface of the pressure roller good power transmission values can be achieved in a simple manner from the pressure roller driven by the drive motor to the plastic rope, which means that sufficient axial forces can be transmitted to the plastic rope from the driven pressure roller in a simple manner in order to achieve the desired low operating forces for pulling of the synthetic rope when unwinding the synthetic rope.
  • the pressure roller which is actively driven by the drive motor, and the ejector roller are rotationally coupled. This makes it possible for the ejector roller not to be rotated via the plastic rope and thus driven, but rather rotated and thus driven by the pressure roller actively driven by the drive motor, which means that the ejector roller can be driven reliably, resulting in little wear on the plastic rope and the ejector roller.
  • a gear for example a chain or belt drive
  • a gear for example a chain or belt drive
  • toothing that is insensitive to radial tolerances can be formed in order to take the ejector roller with you from the pressure roller and drive it.
  • a force entrainment for driving the ejector roller by the pressure roller is formed between the actively driven pressure roller and the ejector roller.
  • the ejector roller can be entrained and thus the ejector roller can be driven by the actively driven pressure roller with force entrainment.
  • At least one further pressure roller that is not actively driven by a drive motor can be provided, by means of which the plastic cable is pressed onto the ejector roller.
  • the pressure roller that is not actively driven by a drive motor can be designed as a passively running pressure roller.
  • the further pressure roller and the ejector roller are rotationally coupled.
  • a force entrainment for driving the further pressure roller by the ejector roller is formed between the ejector roller and the at least one further pressure roller, which is not actively driven by a drive motor.
  • the pressure roller that is not actively driven by a drive motor is thus driven by the force entrainment of the drive roller, which in turn is driven by the pressure roller that is actively driven by the drive motor, for example by a force entrainment.
  • This ejector-pressure roller combination thus represents a friction gear.
  • the pressure roller and the additional pressure roller that may be present have a rubberized surface, by means of which the pressure roller rests against the ejector roller.
  • a rubberized surface With a rubberized surface, good force transmission values for force entrainment from the pressure roller driven by the drive motor to the ejector roller to be driven by the pressure roller or from the ejector roller to the other pressure roller to be driven by the ejector roller can be achieved in a simple manner.
  • the ejector roller has a receiving groove for the plastic cable, the receiving groove having a groove base, in particular a flat groove base, on which the plastic cable rests, and having two lateral groove flanks, the pressure roller and any other pressure roller that may be present into the receiving groove of the ejector roller and the pressure roller and the additional pressure roller that may be present are designed to dip into the receiving groove in such a way that the plastic cable is pressed onto the bottom of the groove by an outer peripheral surface of the pressure roller or by an outer peripheral surface of the additional pressure roller and that end faces of the pressure roller abut against the groove flanks of the ejector roller for driving the ejector roller by the pressure roller or that end faces of the further pressure roller rest against the groove flanks of the ejector roller for driving the further pressure roller through the ejector roller issue.
  • the contour of the ejector roller formed by the receiving groove and the contour of the pressure roller formed by the outer peripheral surface and the end faces of the pressure roller, which dips into the receiving groove, are designed in such a way that an increase in the power transmission to the synthetic rope, avoidance of rope wear on the synthetic rope and a shape adjustment to the non-dimensionally stable plastic rope is achieved, with which the construction-related flattening of the loaded plastic rope is taken into account.
  • Such contours and such a shape of the ejector roller and the pressure roller also enable the ejector roller to be driven easily by the pressure roller actively driven by the drive motor by flank entrainment between the end faces of the pressure roller and the groove flanks of the ejector roller, so that the ejector roller does not first work via the plastic cable but directly set in motion by the pressure roller.
  • Such contours and such a shape of the ejector roller and the further pressure roller also enable a simple drive of the further pressure roller by the ejector roller by flank entrainment between the groove flanks of the ejector roller and the end faces of the further pressure roller.
  • the outer peripheral surface that dips into the receiving groove and at least the areas of the end faces of the pressure roller that dip into the receiving groove are provided with a rubberized surface.
  • a rubberized surface on the outer peripheral surface good power transmission values from the pressure roller driven by the drive motor can be achieved in a simple manner as well as the additional pressure roller on the synthetic rope.
  • rubberized surfaces on the end faces of the pressure roller force entrainment in the form of flank entrainment between the end faces of the pressure roller and the groove flanks of the ejector roller can be formed in a simple manner for driving the ejector roller by the pressure roller driven by the drive motor.
  • the pressure roller As a solid rubber roller.
  • the pressure roller it is possible to design the pressure roller as a steel roller, with the rubberized surfaces being vulcanized onto the pressure roller.
  • the pressure roller is prestressed in the direction of the ejector roller by means of a prestressing device, in particular a spring device.
  • a prestressing device in particular a spring device.
  • the number of driven pressure rollers can be adjusted accordingly depending on the design of the forestry cable winch and the associated different degree of required ejector cable forces. Depending on the design, one, two, three or even more driven pressure rollers can be provided for this purpose in order to be able to generate the required axial forces on the plastic cable.
  • the drive motor driving the pressure roller can be designed as a hydraulic motor or as an electric motor. If several driven pressure rollers are used, each driven pressure roller can have its own drive motor or a common drive motor can be provided for several driven pressure rollers, with the drive motor being able to drive several pressure rollers via a mechanical transmission, for example a chain or belt drive.
  • the ejector has a cable ejector window for the plastic cable, which is laterally connected to two side plates is limited, between which the plastic rope is guided, the side plates having rounded inner edges as rope outlet curves.
  • the ejector has a cable ejector window that is suitable for the plastic cable. Since there is very little friction between the plastic cable and steel bodies in the ejector according to the invention, with two side plates made of steel plates, which have rounded inner edges, for example circular segment-shaped, as cable outlet curves, sharp edges can occur on the surfaces of the side plates that come into contact with the plastic cable if the plastic cable is run out at the side easily avoided.
  • the side plates are arranged laterally on the ejector roller and have a circular peripheral surface in the area of the cable ejector window. In this way, disruptive edges are avoided in a simple manner when the plastic cable runs out upwards or downwards.
  • the cable ejector window is delimited vertically at the top by an upper delimiting pin and vertically at the bottom by a lower delimiting pin.
  • the rope run-out of the plastic rope on the ejector roller can be limited vertically above and below.
  • the invention also relates to a forest cable winch which has a cable drum driven by a drive motor and an ejector according to the invention, a plastic cable being guided from the cable drum to the ejector roller and guided over the ejector roller.
  • a forestry cable winch is made available which can be used as a felling and/or tailing winch and which is provided with a plastic cable, the forestry cable winch having a comfortable cable ejection with low operating forces for pulling the plastic cable when unwinding the plastic cable, has low load-bearing forces for the rope carrying of the plastic rope for the operator and has a good winding quality of the plastic rope on the cable drum.
  • FIG 1 a forest winch 1 according to the invention is shown in a schematic representation.
  • the figure 1 shows a front view of the forestry cable winch 1 according to the invention.
  • the forest cable winch 1 has a cable drum 3 which is driven by a drive motor 2 and on which a plastic cable 4 is wound up.
  • the cable drum 3 is arranged to be rotatable about an axis of rotation 5 and is driven by the drive motor 2 .
  • the drive motor 2 can be designed, for example, as a hydraulic motor or an electric motor.
  • the forest cable winch 1 also has an ejector 6 with an ejector roller 7 which is arranged to be rotatable about an axis of rotation 8 .
  • the plastic cable 4 is guided from the cable drum 3 in the vertical direction V to the ejector roller 7, guided over the ejector roller 7 and deflected at the ejector roller 7 in such a way that the cable 4 is guided away from the ejector roller 7 in the horizontal direction.
  • the ejector 6 also has at least one pressure roller 10 which is arranged to be rotatable about an axis of rotation 11 and by means of which the plastic cable 4 is pressed onto the ejector roller 7 .
  • the pressure roller 10 is actively driven by a drive motor 12 .
  • the drive motor 12 can be designed, for example, as a hydraulic motor or an electric motor.
  • the ejector roller 7 has a receiving groove 20 in which the plastic cable 4 is arranged.
  • the receiving groove 20 has a flat groove base 21 on which the plastic cable 4 rests, and two lateral inclined groove flanks 22a, 22b.
  • the pressure roller 10 driven by the drive motor 12 plunges into the receiving groove 20 of the ejector roller 7 and is designed in such a way that the plastic cable 4 resting on the groove base 21 is pressed onto the groove base 21 by an outer peripheral surface 25 of the pressure roller 10 and that two lateral and inclined Faces 26a, 26b of the pressure roller 10 rest against the groove flanks 22a, 22b of the ejector roller 7 for driving the ejector roller 7 by the pressure roller 10.
  • the inclined end faces 26a, 26b of the pressure roller 10 and the groove flanks 22a, 22b of the ejector roller 7 can be formed with teeth that are insensitive to radial tolerances for the rotary coupling between the driven pressure roller 10 and the ejector roller 7.
  • the ejector roller 7 is preferably designed as a steel roller.
  • the outer peripheral surface plunging into the receiving groove 20 25 and at least the ones in the Receiving groove 20 plunging areas of the two end faces 26a, 26b of the pressure roller 10 provided with a rubberized surface In order to be able to transmit sufficient axial forces from the pressure roller 10 driven by the drive motor 12 to the plastic cable 4 and to achieve force entrainment for driving and rotating the ejector roller 7 by the pressure roller 10 driven by the drive motor 12, the outer peripheral surface plunging into the receiving groove 20 25 and at least the ones in the Receiving groove 20 plunging areas of the two end faces 26a, 26b of the pressure roller 10 provided with a rubberized surface.
  • the pressure roller 10 is preferably formed by a steel roller, onto which a rubber layer is vulcanized on the outer peripheral surface 25 and the two end faces 26a, 26b.
  • the pressure roller 10 is also prestressed in the direction of the ejector roller 7 by means of a prestressing device 30 .
  • the prestressing device 30 is designed as an adjustable tension spring.
  • the pretensioning device 30 thus pretensions the pressure roller 10 in the direction of the ejector roller 7 in such a way that the pressure roller 10 is in contact with the plastic cable 4 via the rubberized outer peripheral surface 25 and the plastic cable 4 is pressed onto the groove base 21 of the receiving groove 20 of the ejector roller 7 and that the end faces 26a, 26b of the pressure roller 10 come into contact with the groove flanks 22a, 22b of the ejector roller 7 in areas B1, B2.
  • the shape of the receiving groove 20 of the ejector roller 7 and the shape of the rubberized outer peripheral surface 25 and the rubberized end faces 26a, 26b of the pressure roller 10 is such that the flattening of the plastic cable 4 under a tensile load is taken into account, so that the driven pressure roller 10 Axial force can be applied to the plastic cable 4 and a force entrainment in the form of flank entrainment and a flank drive is achieved in the areas B1, B2, with which the ejector roller 7 is rotated and driven by the driven pressure roller 10.
  • the ejector 6 has a holder 33 with which the ejector 6 can be pivoted about a vertical pivot axis 31, as shown in FIGS Figures 3 and 4 is illustrated by the arrow P1.
  • the holder 33 can include a tube section 32 in which the plastic cable 4 is guided to the cable drum 3 .
  • the ejector head 45 forms a cable ejector window 35 for the plastic cable 4, which is delimited laterally by two side plates 36a, 36b, between which the ejector roller 7 is rotatably arranged and the plastic cable 4 is guided.
  • the side plates 36a, 36b are fixed to the bracket 33. As shown in FIG.
  • the side plates 36a, 36b which are made of steel, for example, and laterally delimit the cable ejector window 35, each have a rounded inner edge 37a, 37b, which form corresponding cable outlet curves.
  • rounded inner edges 37a, 37b are thus - as from the figure 4 can be seen - gentle curves are achieved on the outer edges of the inner side flanks of the two side plates 36a, 36b, which represent surfaces tangent to the plastic cable 4 when the plastic cable 4 is pulled out slightly laterally from the ejector head 45, as in FIG figure 4 is shown.
  • sharp edges that could damage the plastic cable 4 are avoided.
  • the cable ejection window 35 formed by the two side plates 36a, 36b is limited vertically upwards by an upper limiting pin 40 and vertically downwards by a lower limiting pin 41.
  • the limiter pins 40, 41 are preferably round steel pins suitably secured in the side plates 36a, 36b.
  • the synthetic cable 4 is shown in an upper end position delimited by the upper delimiting pin 40 and in a lower end position delimited by the lower delimiting pin 41, the synthetic cable 4 - as illustrated by the arrow P2 - being pulled out of the cable ejector window 35 in every intermediate vertical pull-out direction can be.
  • the side plates 36a, 36b have a circular outer peripheral surface in the region between the two limiting pins 40, 41, at least when viewed in the peripheral direction.
  • the outer radius R1 of the side plates 36a, 36b is larger than the outer radius R2 of the ejector roller 7, at least in the area between the two limiting pins 40, 41 as seen in the circumferential direction the circular side plates 36a, 36b are provided with the rounded inner edges 37a, 37b.
  • an ejector with a plurality of pressure rollers 10, 10a, 10b is shown, with at least one further pressure roller 10a, 10b being provided in addition to the pressure roller 10 actively driven by means of the drive motor 12.
  • the additional pressure roller 10a or 10b preferably has an identical structure to the pressure roller 10 and is pretensioned in the direction of the ejector roller 7 by means of a corresponding pretensioning device 30a or 30b.
  • the further pressure roller 10a or 10b can be configured as a pressure roller that is not actively driven by a drive motor or as a pressure roller that is actively driven by a drive motor.
  • the other pressure roller 10a, 10b appears preferably analogous to the representation of figure 2 into the receiving groove 20 of the ejector roller 7 and is designed in such a way that the plastic cable 4 resting on the groove base 21 is pressed onto the groove base 21 by an outer peripheral surface 25 of the pressure roller 10a or 10b and that two lateral and inclined end faces 26a, 26b of the Pressure roller 10a and 10b rest against the groove flanks 22a, 22b of the ejector roller 7.
  • the outer circumferential surface 25 dipping into the receiving groove 20 and at least the areas of the two end faces 26a, 26b of the further pressure roller 10a and 10b dipping into the receiving groove 20 are provided with a rubberized surface.
  • each pressure roller 10, 10a, 10b can be driven by its own drive motor or a common drive motor 12 can be provided for driving the pressure rollers 10, 10a, 10b, which a mechanical gear drives the pressure rollers 10, 10a, 10b.
  • a common drive motor 12 can be provided for driving the pressure rollers 10, 10a, 10b, which a mechanical gear drives the pressure rollers 10, 10a, 10b.
  • Pressure roller 10a or 10b formed by the ejector roller 7. This is done, for example, analogously to the pressure roller 10 actively driven by the drive motor 12 by flank entrainment between the groove flanks 22a, 22b of the ejector roller 7 and the end face 26a, 26b of the other pressure roller 10a and 10b.
  • the pressure roller 10a or 10b not actively driven by a drive motor is thus driven by the drive roller 7 via this flank entrainment, which in turn is driven by the pressure roller 10 actively driven by the drive motor 12 via the corresponding flank entrainment.
  • the further pressure roller 10a or 10b can have the same diameter as the pressure roller 10 actively driven by the drive motor 12 . If it makes sense for reasons of space, the further pressure roller 10a or 10b can also have a smaller diameter than the pressure roller 10 actively driven by the drive motor 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Friction Gearing (AREA)
EP22159968.1A 2021-03-25 2022-03-03 Éjecteur pour un treuil forestier Pending EP4074648A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021107516.5A DE102021107516A1 (de) 2021-03-25 2021-03-25 Auswerfer für eine Forsteilwinde

Publications (1)

Publication Number Publication Date
EP4074648A1 true EP4074648A1 (fr) 2022-10-19

Family

ID=80628656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159968.1A Pending EP4074648A1 (fr) 2021-03-25 2022-03-03 Éjecteur pour un treuil forestier

Country Status (3)

Country Link
US (1) US20220306432A1 (fr)
EP (1) EP4074648A1 (fr)
DE (1) DE102021107516A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089045A1 (fr) * 2021-05-12 2022-11-16 Suffel Fördertechnik GmbH & Co. KG Procédé permettant de faire fonctionner un treuil forestier et treuil forestier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009072992A2 (fr) * 2007-12-04 2009-06-11 Uniforest, D.O.O. Engrenage d'entraînement pour déroulement de corde sur treuils forestiers
WO2009148414A1 (fr) * 2008-06-03 2009-12-10 Tajfun Planina Proizvodnja Strojev, D.O.O. Dispositif hydraulique pour conduire et guider un élément de halage longitudinal, en particulier une poulie de treuil forestier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309064A (en) * 1964-12-18 1967-03-14 Muller Wolf Winch mechanism with dual drive
US3399868A (en) * 1967-03-31 1968-09-03 Bucyrus Erie Co Rope pay-out apparatus
US3448962A (en) * 1967-07-11 1969-06-10 Us Navy Cable tensioning device for winches
US3707275A (en) * 1970-09-04 1972-12-26 Carter H Arnold Hoisting device
FR2632374B1 (fr) * 1988-06-03 1994-04-08 Secalt Sa Appareil pour l'entrainement d'un lien souple tel qu'une sangle ou une courroie
DE19830239B4 (de) * 1998-07-07 2008-02-07 S + R Maschinenbau Gmbh Schlang & Reichart Forstseilwinden Forstseilwinde
DE202005020694U1 (de) * 2005-04-08 2006-06-22 A. Ritter u. Söhne, Maschinenfabrik und Landmaschinen GmbH & Co KG Seilauswurf- und Seileinlaufbremsvorrichtung
SI22712A (sl) * 2008-01-21 2009-08-31 Uniforest, D.O.O. Ĺ kripec na gozdarskem vitlu
US11485618B2 (en) * 2018-12-27 2022-11-01 Hall Labs Llc Motor-driven fairlead to aid in spooling or unspooling a line from a winch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009072992A2 (fr) * 2007-12-04 2009-06-11 Uniforest, D.O.O. Engrenage d'entraînement pour déroulement de corde sur treuils forestiers
WO2009148414A1 (fr) * 2008-06-03 2009-12-10 Tajfun Planina Proizvodnja Strojev, D.O.O. Dispositif hydraulique pour conduire et guider un élément de halage longitudinal, en particulier une poulie de treuil forestier

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DE102021107516A1 (de) 2022-09-29
US20220306432A1 (en) 2022-09-29

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