EP4201866A1 - Treuil mécanique avec un commutateur mécanique pour terminer l'enroulement d'un câble sur le tambour du treuil - Google Patents

Treuil mécanique avec un commutateur mécanique pour terminer l'enroulement d'un câble sur le tambour du treuil Download PDF

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Publication number
EP4201866A1
EP4201866A1 EP22212377.0A EP22212377A EP4201866A1 EP 4201866 A1 EP4201866 A1 EP 4201866A1 EP 22212377 A EP22212377 A EP 22212377A EP 4201866 A1 EP4201866 A1 EP 4201866A1
Authority
EP
European Patent Office
Prior art keywords
rope
winch
housing
base plate
plate
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
EP22212377.0A
Other languages
German (de)
English (en)
Other versions
EP4201866B1 (fr
Inventor
Franc Pisek
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.)
Pisek Vitli Krpan
Original Assignee
Pisek Vitli Krpan
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 Pisek Vitli Krpan filed Critical Pisek Vitli Krpan
Publication of EP4201866A1 publication Critical patent/EP4201866A1/fr
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Publication of EP4201866B1 publication Critical patent/EP4201866B1/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
    • B66D1/02—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
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
    • 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
    • B66D1/16—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake
    • B66D1/18—Power transmissions between power sources and drums or barrels the drums or barrels being freely rotatable, e.g. having a clutch activated independently of a brake and the power being transmitted from a continuously operating and irreversible prime mover, i.e. an internal combustion engine, e.g. on a motor vehicle or a portable winch
    • 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
    • B66D1/54—Safety gear
    • B66D1/56—Adaptations of limit switches

Definitions

  • the present invention belongs to the field of mechanical engineering, more precisely to the field of forestry winches and safety devices for forestry winches.
  • the invention relates to a mechanical winch with a mechanical switch for terminating winding of a rope on a drum of the winch.
  • the brake When the first, green rope is pulled for activation of winding, the brake is automatically activated, which ensures that the brake belt slides along the winch drum, but it does not brake, because the drum is rotating in the direction of winding. Consequently, the drum is rotated, rope is wound onto it and the load is pulled towards the winch.
  • the drum When the first rope for activation of winding is released with the load attached, the drum would rotate in the direction of unwinding of the rope, which is automatically prevented by the activated brake. This is enabled by an eccentric connected to the brake belt. Thus, the drum does not rotate and the rope is not winding anymore, which consequently holds the load steady.
  • the second, red rope for deactivation of the brake has to be pulled, which via a special lever system releases the brake belt, thus allowing rotation of the drum, wherein the said lever system is connected to the brake belt so that the latter can be partly released using a handle.
  • the brake can be released in two manners, i.e., proportionally with slight pulling so that the load is released in a step-wise manner, or completely with full movement to the position in which the brake is completely deactivated, thus locking the lever system and allowing the rope to freely unwind.
  • the latter is used for example when pulling of the rope is needed during fixing of the load.
  • the technical problem which is solved by the present invention, is a constructional design of a mechanism, which will reliably terminate the pulling function in a mechanical winch, wherein the mechanism has to enable easier return into the initial position, in which unwinding of the rope and consequent load pulling is enabled.
  • a winch with a safety mechanism for switching off winding of a rope wherein an end switch for switching off rope winding is triggered with a pushing element, which is pushed into the end switch by a rotatably mounted washer on an accessory on a rope guide, when the accessory of an end piece due to winding of the pulling rope reaches the washer and pushes it into its final position.
  • the mechanism may be installed in winches with electric, hydraulic or mechanic steering of winding and unwinding of the pulling rope.
  • the present invention differs from this disclosure as the termination of winding is not purely mechanical.
  • the solution of the stop switch described in patent JP6050697 is adapted for a winch installed in a car. Termination of the drive of the pulling rope is achieved mechanically, wherein on one side a switching element rotatable around one axis is provided, said switching element can be pushed by the end part of the rope. Upon pressure of the end part of the rope on the switching element, a coupling for turning on and off the PTO shaft is moved, so that the winch terminates winding of the rope.
  • This solution differs from the present invention in that termination of winding is achieved in a different manner, as the invention is adapted for a forestry winch, the drum of which is not driven by the PTO shaft.
  • the essence of the mechanical winch with a mechanical stop switch according to the invention is in that the mechanical stop switch has a Bowden inside which a wire rope is led, said wire rope being attached on one end to a pushing element installed at a orifice of a rope guide and on the other end to a switching mechanism, which upon contact of the end part of the rope with the pushing element moves from inactive to active position due to the translation through said wire rope.
  • the orifice of the rope guide is provided with a spring-supported pushing element, which is preferably shaped as a washer or a plate with an opening for receiving the rope, which is with support elements connected to the inner part of the pushing element, or housing of the rope guide or the orifice, respectively,
  • the Bowden, inside which the wire rope is led, is mounted on the pushing element or its inner part, respectively, wherein the wire rope is attached between the inner part and the outer washer or plate.
  • the Bowden and the wire rope inside it are led to the switching mechanism and on the other end the Bowden is attached on the base plate or its accessory, while the wire rope is attached to the switching plate.
  • the stop switch mechanism in the interior or the exterior of the winch comprises:
  • At least three balls have to be provided, optimally five.
  • suitable movable cylinders or pressure pins that operate in the same or similar manner as described balls can be used.
  • the mechanical stop switch functions in the following way: the coupling is activated by pulling the green rope on the winch and consequently the base plate, which triggers operation of the winch (winding of the rope on the drum, i.e. pulling of the load.
  • the mechanical force is transferred through the wire rope in the Bowden to the switching plate, which is rotated and releases momentum or locking force between the base plate and the housing or the handle of the base plate and the handle of the housing.
  • the latter is connected to the coupling mechanism via a rod installed in a bearing of the housing, which consequently jumps to the zero position and terminates pulling with the winch.
  • the base plate and the housing are returned to the zero-position due to activity of the spring.
  • the balls or the restraining element move from the grooves in the switching plate to the grooves in the housing, which means that the positions of the base plate and the housing are locked again, so that the base plate and the housing are again movable together.
  • the coupling mechanism is prepared for activation or pulling of a load with the winch.
  • the return to the initial position, in which winding is again possible, can be done with another handle or a lever instead of springs, which is obvious to an expert in the field of machine components and the above description of the invention.
  • Figure 1 shows an orifice 1 of the pulley, which is provided with a spring-supported pushing element shaped as a washer or a plate 11 with an opening for receiving the rope, which is with supporting elements 12 connected to an inner part 13 of the pushing element, housing of the guide or the orifice.
  • Bowden B inside which the wire rope Z is installed, is mounted on the inner part 13 of the pushing element, while the wire rope is attached in the middle between the inner part 13 and the outer washer or the plate 11.
  • the Bowden B and the wire rope Z are then led to the switching mechanism shown in figures 2 , 3 and 4.
  • Figure 4 shows an assembled switching mechanism, while figures 2 and 3 show intermediate bearings for installation on a winch axle, a distancing bush and distancing elements.
  • the switching mechanism in the interior of the winch according to the preferred embodiment comprises:
  • Figure 5 shows a cross-section of the switching mechanism, wherein the ball is between the base plate 3 and the housing 4, so that they are connected and pulling is enabled.
  • the switching plate 2 has the groove, which is upon rotation of the switching plate 2 due to impact of the end part of the rope to the pushing element 11 moved in such a manner to align with holes of the base plate 3, which moves the balls 5 between the base plate 3 and the switching plate 2 and terminates winding.
  • pulling the green rope does not activate in pulling, as the elements are disengaged.
  • the elements For return into the initial state in which activation is enabled, the elements have to be returned into their initial state, i.e. both plate 3 and housing 4 have to be connected.
  • the spring attached to the frame and the leg 32 of the plate 3 ensures the first step, while the plate 3 is pulled into its initial position by pulling the winch red rope. This initial position is needed for any new working cycle (load pulling) that has been terminated using the described switching mechanism.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Transmission Devices (AREA)
EP22212377.0A 2021-12-20 2022-12-08 Treuil mécanique avec un commutateur mécanique pour terminer l'enroulement d'un câble sur le tambour du treuil Active EP4201866B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI202100228A SI26289A (sl) 2021-12-20 2021-12-20 Mehanski vitel z mehanskim stikalom za prekinitev navijanja vrvi na boben vitla

Publications (2)

Publication Number Publication Date
EP4201866A1 true EP4201866A1 (fr) 2023-06-28
EP4201866B1 EP4201866B1 (fr) 2024-07-24

Family

ID=85158899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22212377.0A Active EP4201866B1 (fr) 2021-12-20 2022-12-08 Treuil mécanique avec un commutateur mécanique pour terminer l'enroulement d'un câble sur le tambour du treuil

Country Status (2)

Country Link
EP (1) EP4201866B1 (fr)
SI (1) SI26289A (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160101969A1 (en) * 2013-05-21 2016-04-14 M.A.T. Malmedie Antriebstechnik Gmbh Drive train for hoisting gear
EP3042875A1 (fr) * 2015-01-08 2016-07-13 Ricca Andrea & C. S.n.c. Treuil pour la foresterie, machines agricoles et similaires
EP3095748A1 (fr) 2015-05-22 2016-11-23 Pisek - Vitli Krpan, d.o.o. Treuil avec un mécanisme de sécurité pour l'arrêt de l' enroulement d'une corde
JP6050697B2 (ja) 2013-02-12 2016-12-21 株式会社岡村製作所 段積み段ばらし装置
US20190177136A1 (en) * 2017-09-28 2019-06-13 Mark S. Soderberg Trailer mounted capstan winch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6050697B2 (ja) 2013-02-12 2016-12-21 株式会社岡村製作所 段積み段ばらし装置
US20160101969A1 (en) * 2013-05-21 2016-04-14 M.A.T. Malmedie Antriebstechnik Gmbh Drive train for hoisting gear
EP3042875A1 (fr) * 2015-01-08 2016-07-13 Ricca Andrea & C. S.n.c. Treuil pour la foresterie, machines agricoles et similaires
EP3095748A1 (fr) 2015-05-22 2016-11-23 Pisek - Vitli Krpan, d.o.o. Treuil avec un mécanisme de sécurité pour l'arrêt de l' enroulement d'une corde
US20190177136A1 (en) * 2017-09-28 2019-06-13 Mark S. Soderberg Trailer mounted capstan winch

Also Published As

Publication number Publication date
SI26289A (sl) 2023-06-30
EP4201866B1 (fr) 2024-07-24

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