EP3929143B1 - Un treuil mécanique disposant d'un mécanisme de contrle avec une sécurité améliorée - Google Patents

Un treuil mécanique disposant d'un mécanisme de contrle avec une sécurité améliorée Download PDF

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Publication number
EP3929143B1
EP3929143B1 EP21180483.6A EP21180483A EP3929143B1 EP 3929143 B1 EP3929143 B1 EP 3929143B1 EP 21180483 A EP21180483 A EP 21180483A EP 3929143 B1 EP3929143 B1 EP 3929143B1
Authority
EP
European Patent Office
Prior art keywords
winch
rope
control mechanism
protective housing
brake
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
EP21180483.6A
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German (de)
English (en)
Other versions
EP3929143A1 (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 doo
Original Assignee
Pisek Vitli Krpan doo
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Publication date
Application filed by Pisek Vitli Krpan doo filed Critical Pisek Vitli Krpan doo
Publication of EP3929143A1 publication Critical patent/EP3929143A1/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
    • B66D1/54—Safety gear
    • B66D1/56—Adaptations of limit switches
    • 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
    • B66D1/28—Other constructional details

Definitions

  • the present invention belongs to the field of forestry winches, more precisely to the field of constructional details in mechanical forestry winches, which relate to control, namely activation of pulling and shutting down.
  • the present invention relates to a mechanical winch with improved safety of the control mechanism.
  • Mechanical winches are characterized in that their control is performed with a mechanism, which has a first rope (usually green) for activation of pulling and a second rope (usually red) for release (deactivation) of the brake (an expression that is commonly used is also a brake for proportional release).
  • a mechanism which has a first rope (usually green) for activation of pulling and a second rope (usually red) for release (deactivation) of the brake (an expression that is commonly used is also a brake for proportional release).
  • 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 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.
  • Some hydraulic winches have controlled mechanism of valves inside a housing, however the mechanisms of mechanical winches due to their size and construction are not suitable for the solution used in hydraulic winches.
  • the mechanical winch according to the invention has all usual constructional elements of mechanical winches known to the person skilled in the art, such as:
  • the essence of the mechanical winch with improved safety of the control mechanism is in that the whole lever system of the mechanism is hidden inside a rigid protective housing, which is attached to the winch or preferably made as an integral part of the winch housing, while a part of the rope and the optional handle for activation of pulling and a part of the rope and the handle for releasing the brake are not inside the said protective housing, so that they are accessible to the user, wherein the ropes are led to the exterior through an opening in the protective housing.
  • the said opening which may have any shape, can be on any side of the protective housing, wherein the opening may be provided with elements for improving sliding of the rope.
  • the opening may be encased with rubber or plastic material in order to decrease the possibility of damaging the rope due to friction against the preferred metal housing.
  • the protective housing as such may be made from any suitable metal material, which is suitable for housings of winches and similar machines.
  • the protective housing is installed on the winch in a non-removable manner, for example with welding, or in a removable manner with screws or similar elements, which improves access to the control mechanism in case of breakdowns or maintenance or repairs.
  • the protective housing is made as a part of the winch housing, which allows better construction, safety and stability.
  • the mechanism for controlling the mechanical winch usually comprises:
  • 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 control mechanism for controlling the mechanical winch comprises:
  • Figure 1 shows a known mechanical winch 1, which has a control mechanism on its exterior, wherein the drum for winding the pulling rope and the drive parts inside the housing of the winch 1a, while the control mechanism is connected to the said parts from the side.
  • the control mechanism of the mechanical winch shown in figure 1 comprises:
  • 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 4 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.
  • FIG. 2 shows the mechanical winch 10 according to the invention, which has the control mechanism hidden inside a metal protective housing 10b, wherein the protective housing 10b is made as a part of the winch housing 10a.
  • the protective housing 10b has on one side an opening 10b', through which a part of the first rope 12 and a handle 12a for activation of pulling and a part of the second rope 13 and a handle for releasing the brake 13a are installed, so that they are accessible to the user.
  • the said opening 10b' which may have any shape, preferably oval shape, is provided with an element made from rubber or plastic for improved sliding of the rope, which decreases the possibility of rope damaging due to friction against the metal housing.
  • the protective housing 10b is provided with further elongated openings 10b" for ensuring air flow and improved visibility in case the control mechanism malfunctions.
  • the openings 10b" may have any shape or may be absent, so that the housing surface is smooth.

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

Claims (9)

  1. Un treuil mécanique (10) disposant d'un mécanisme de contrôle avec sécurité améliorée, caractérisé par le fait que les leviers du mécanisme de contrôle sont cachés à l'intérieur d'un boîtier de protection rigide (10b) qui est fixé au treuil, ou, ledit boîtier de protection fait partie du carter du treuil, où une partie d'un premier câble (12) destiné à l'activation de la traction et une partie du second câble (13) destiné à la désactivation du frein (13a) sont logées dans ledit boîtier de protection (10b), où lesdits câbles (12, 13) passent à l'extérieur du boîtier de protection par une ouverture (10b') dans le boîtier de protection (10b).
  2. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon la revendication 1, caractérisé en ce que ladite ouverture (10b') peut se situer sur n'importe quel côté du boîtier de protection (10b).
  3. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon la revendication 1 ou 2, caractérisé en ce que ladite ouverture (10b') est revêtue de plastique, de caoutchouc ou de tout autre matériau qui réduit la friction pendant la traction du câble.
  4. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications qui précèdent, caractérisé en ce que le boîtier de protection (10b) est également doté d'ouvertures allongées supplémentaires (10b") pour permettre une circulation de l'air et une visibilité améliorée au cas où le mécanisme de contrôle serait défectueux.
  5. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications qui précèdent, caractérisé en ce que le boîtier de protection (10b) est composé de tout matériau métallique approprié.
  6. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications qui précèdent, caractérisé en ce que le boîtier de protection (10b) se situe approximativement sur la partie centrale du treuil (10).
  7. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications qui précèdent, caractérisé en ce que le boîtier de protection (10b) fait partie du carter du treuil (10).
  8. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications qui précèdent, caractérisé en ce que le boîtier de protection (10b) n'est pas installé de façon amovible sur le treuil (10) par le biais de soudures.
  9. Le treuil mécanique disposant d'un mécanisme de contrôle avec sécurité améliorée selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le boîtier de protection (10b) est installé de façon amovible sur le treuil (10), de préférence par le biais de vis.
EP21180483.6A 2020-06-22 2021-06-19 Un treuil mécanique disposant d'un mécanisme de contrle avec une sécurité améliorée Active EP3929143B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI202000116A SI26017A (sl) 2020-06-22 2020-06-22 Mehanski vitel z izboljšano varnostjo mehanizma za upravljanje

Publications (2)

Publication Number Publication Date
EP3929143A1 EP3929143A1 (fr) 2021-12-29
EP3929143B1 true EP3929143B1 (fr) 2024-04-10

Family

ID=77126508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21180483.6A Active EP3929143B1 (fr) 2020-06-22 2021-06-19 Un treuil mécanique disposant d'un mécanisme de contrle avec une sécurité améliorée

Country Status (2)

Country Link
EP (1) EP3929143B1 (fr)
SI (1) SI26017A (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710035B2 (fr) * 1972-04-13 1982-02-24
US10343878B2 (en) * 2017-02-13 2019-07-09 Andrew J Limb Powered winch retrieval system for harvested big game

Also Published As

Publication number Publication date
SI26017A (sl) 2021-12-31
EP3929143A1 (fr) 2021-12-29

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