EP4063312A1 - Éjecteur pour un treuil forestier - Google Patents

Éjecteur pour un treuil forestier Download PDF

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Publication number
EP4063312A1
EP4063312A1 EP22159918.6A EP22159918A EP4063312A1 EP 4063312 A1 EP4063312 A1 EP 4063312A1 EP 22159918 A EP22159918 A EP 22159918A EP 4063312 A1 EP4063312 A1 EP 4063312A1
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.)
Granted
Application number
EP22159918.6A
Other languages
German (de)
English (en)
Other versions
EP4063312B1 (fr
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 EP4063312A1 publication Critical patent/EP4063312A1/fr
Application granted granted Critical
Publication of EP4063312B1 publication Critical patent/EP4063312B1/fr
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
    • B66D1/7415—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
    • 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
    • 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, the ejector roller being driven by a drive motor.
  • 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, by means of which the plastic cable is pressed onto the ejector roller, the driven ejector roller and the pressure roller being rotationally coupled.
  • the idea according to the invention is therefore to drive the ejector roller in a forest cable winch with a plastic cable and to additionally provide a pressure roller which is rotationally coupled to the driven ejector roller.
  • the pressure roller which is rotationally coupled to the driven ejector roller, is thus rotated and driven via the rotary coupling by the ejector roller driven by the drive motor.
  • the wear and tear between the driven ejector roller and the plastic rope can be reduced on the one hand, and power transmission from the pressure roller to the plastic rope can take place on the other hand, so that the axial forces and thus the rope tension on the plastic rope can be partially or completely replaced by the over the rotary coupling driven by the driven ejector roller Pressure roller transferred to the plastic cable and generated on the plastic cable.
  • the pressure roller driven by the driven ejector roller via the rotary coupling thus presses the plastic cable onto the ejector roller and generates the axial force on the plastic cable.
  • Such a pressure roller which is driven by the driven ejector roller via a rotary coupling and with which the required axial forces are transmitted to the plastic cable, makes it possible to design the ejector roller as a steel roller. Since the ejector roller has to transmit the high nominal operating forces, the ejector roller is advantageously designed as a stable steel roller.
  • the associated disadvantage that the pairing of steel ejector roller and plastic cable results in very poor force transmission values, is overcome according to the invention in that the axial forces are applied to the plastic cable by the pressure roller driven by the driven ejector roller via the rotary coupling, since the pressure roller is simpler Way can be designed in such a way that good power transmission values result for power transmission to the plastic cable.
  • an ejector is thus made available which is suitable and suitable for a plastic rope and which, while avoiding wear-causing slipping of the plastic rope on the ejector roller, makes it possible to be able to transmit sufficient axial forces to the plastic rope in order to achieve the desired low operating forces for pulling the plastic rope to achieve when unwinding the plastic rope.
  • 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 force transmission values can be achieved in a simple manner from the pressure roller, which is driven by the driven ejector roller via the rotary coupling, to the plastic cable, which means that sufficient axial forces can be transmitted from the pressure roller to the plastic cable in a simple manner in order to achieve the desired low operating forces for pulling the plastic rope when unwinding the plastic rope and slippage of the plastic rope on the driven ejector roller can be reduced.
  • a transmission such as a chain or belt drive, between the of the Drive motor-driven ejector roller and the pinch roller may be provided to drive the pinch roller through the ejector roller.
  • toothing that is insensitive to radial tolerances can be formed between the ejector roller driven by the drive motor and the pressure roller, in order to drive the pressure roller through the ejector roller.
  • a force entrainment for driving the pressure roller by the ejector roller is formed between the driven ejector roller and the pressure roller.
  • force entrainment allows the pressure roller to be entrained and thus the pressure roller to be driven by the ejector roller driven by the drive motor.
  • the pressure roller has a rubberized surface, by means of which the pressure roller bears against the ejector roller.
  • a rubberized surface With a rubberized surface, good force transmission values for force entrainment from the ejector roller driven by the drive motor to the pressure roller for rotary coupling between the driven ejector roller and the pressure roller to be driven 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 dipping into the receiving groove of the ejector roller and the pressure roller is 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 and that end faces of the pressure roller rest against the groove flanks of the ejector roller.
  • 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 the construction-related flattening of the loaded synthetic rope is taken into account.
  • Such contours and such a shape of the ejector roller and the pressure roller also enable a simple drive of the pressure roller by the ejector roller driven by the drive motor by flank entrainment between the end faces of the pressure roller and the groove flanks of the ejector roller. Force entrainment can be formed between the end faces of the pressure roller and the groove flanks of the ejector roller or toothing that is insensitive to radial tolerances can be formed in order to drive the pressure roller through the ejector roller.
  • the outer peripheral surface that dips into the receiving groove and/or 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 can be achieved in a simple manner from the pressure roller, which is driven by the driven ejector roller via the rotary coupling, to the plastic cable.
  • rubberized surfaces on the end faces of the pressure roller force entrainment in the form of flank entrainment between the groove flanks of the ejector roller and the end faces of the pressure roller for driving the pressure roller can be easily formed by the ejector 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 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 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 ejector roller can be designed as a hydraulic motor or as an electric motor.
  • the ejector has a rope ejector window for the plastic rope, which is delimited laterally by two side plates 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 downwind winch and which is provided with a plastic cable, with the forestry cable winch having a comfortable cable ejection with low operating forces for pulling the Has plastic rope when unwinding the plastic rope, has low load-bearing forces for the rope carrying 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 rope 4 is guided from the rope drum 3 in the vertical direction V to the ejector roller 7, over the ejector roller 7 and at the ejector roller 7 deflected in such a way that the rope 4 is led 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 ejector roller 7 is driven by a drive motor 12 .
  • the drive motor 12 can be designed, for example, as a hydraulic motor or an electric motor.
  • the pressure roller 10 is rotatably coupled to the ejector roller 7 driven by the drive motor 12 , so that the pressure roller 10 is driven by the ejector roller 7 .
  • 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 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 end faces 26a, 26b of the Pressure roller 10 rests against the groove flanks 22a, 22b of the ejector roller 7 for driving the pressure roller 10 by the ejector roller 10 driven by the drive motor 12.
  • a force entrainment between the groove flanks 22a, 22b of the ejector roller 7 and the inclined end faces 26a, 26b of the pressure roller 10 is formed between the ejector roller 7 and the pressure roller 10 for a rotary coupling between the driven ejector roller 7 and the pressure roller 10.
  • toothing that is insensitive to radial tolerances can be formed for the rotary coupling between the driven ejector roller 7 and the pressure roller 10.
  • 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 areas of the two end faces 26a, 26b of the pressure roller 10 that dip into the receiving groove 20 are 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 in the areas B1, B2 a force entrainment is achieved as rotary coupling in the form of a flank entrainment and a flank drive, with which the pressure roller 10 is rotated and driven by the ejector roller 7 driven by the drive motor 12 and that an axial force is exerted by the pressure roller 10 driven by the driven ejector roller 7 by means of the rotary coupling the plastic cable 4 can be applied.
  • the ejector roller 7 is therefore driven by the drive motor 12, with the rubberized outer peripheral surface 25 of the pressure roller 10 driven by the rotary coupling, for example flank entrainment, preventing in a first step the wearing slip between the plastic cable 4 and the steel roller Ejector roller 7 is reduced.
  • the rubberized pressure roller 10, which is driven by the driven ejector roller 7 via the rotary coupling, can thus indirectly prevent slipping between the ejector roller 7, which is designed as a steel roller and is driven by the drive motor 12, and the plastic cable 4, since the pressure roller 10 either takes the plastic cable 4 with it or the driven ejector roller 7 brakes.
  • the power transmission and the generation of the axial force on the plastic cable 4 takes place here via the 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.
  • At slightly sideways out of the rope ejector window 35 of the ejector head 45 pulled out plastic cable 4 are thus avoided sharp edges that could damage the plastic cable 4.
  • 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.
  • the circular side plates 36a, 36b are provided with the rounded inner edges 37a, 37b at least in the area between the two limiting pins 40, 41 viewed in the circumferential direction.
  • an ejector with a plurality of pressure rollers 10, 10a, 10b is shown, which are preferably each rotatably coupled to the ejector roller 7 driven by the drive motor 12.
  • the further 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 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 that dips into the receiving groove 20 and at least the areas of the two end faces 26a, 26b of the other pressure roller 10a or 10b that dip into the receiving groove 20 are provided with a rubberized surface, so that, analogously to the pressure roller 10, a force entrainment is designed to drive the further pressure roller 10a or 10b by the ejector roller 7 driven by the drive motor 12. This is done, for example, analogously to the pressure roller 10 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 other pressure roller 10a or 10b can have the same diameter as the pressure roller 10 . 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP22159918.6A 2021-03-25 2022-03-03 Éjecteur pour un treuil forestier Active EP4063312B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021107515.7A DE102021107515A1 (de) 2021-03-25 2021-03-25 Auswerfer für eine Forsteilwinde

Publications (2)

Publication Number Publication Date
EP4063312A1 true EP4063312A1 (fr) 2022-09-28
EP4063312B1 EP4063312B1 (fr) 2024-08-14

Family

ID=80625585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159918.6A Active EP4063312B1 (fr) 2021-03-25 2022-03-03 Éjecteur pour un treuil forestier

Country Status (3)

Country Link
US (1) US20220306433A1 (fr)
EP (1) EP4063312B1 (fr)
DE (1) DE102021107515A1 (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 (11)

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Publication number Priority date Publication date Assignee Title
US1337341A (en) * 1918-06-24 1920-04-20 American Hoist & Derrick Co Sheave-block
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
DE4123819A1 (de) * 1990-09-01 1992-03-12 Rinio Gmbh Triebzeugtechnik Vorrichtung zum verlagern von lasten mittels eines seils
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

Also Published As

Publication number Publication date
EP4063312B1 (fr) 2024-08-14
DE102021107515A1 (de) 2022-09-29
US20220306433A1 (en) 2022-09-29

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