SI26287A - Pulley with improved wire rope guidance and the winch with said pulley - Google Patents

Pulley with improved wire rope guidance and the winch with said pulley Download PDF

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Publication number
SI26287A
SI26287A SI202100214A SI202100214A SI26287A SI 26287 A SI26287 A SI 26287A SI 202100214 A SI202100214 A SI 202100214A SI 202100214 A SI202100214 A SI 202100214A SI 26287 A SI26287 A SI 26287A
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SI
Slovenia
Prior art keywords
pulley
rope
guide
wire rope
housing
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SI202100214A
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Slovenian (sl)
Inventor
Franc Pišek
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PIŠEK - VITLI KRPAN, d.o.o.
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Application filed by PIŠEK - VITLI KRPAN, d.o.o. filed Critical PIŠEK - VITLI KRPAN, d.o.o.
Priority to SI202100214A priority Critical patent/SI26287A/en
Priority to EP22212372.1A priority patent/EP4194389B1/en
Publication of SI26287A publication Critical patent/SI26287A/en

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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
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/10—Applications of braking or detent devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)

Abstract

Pričujoči izum spada na področje gozdarskih vitlov, natančneje na področje konstrukcijskih podrobnosti vitlov, še posebno vezanih na zgornji škripec z odvijalno napravo. Izum se nanaša na škripec z izboljšanim vodenjem žične vrvi in vitel z omenjenim škripcem, kije sestavljen iz: fiksnega ohišja (11), ki je v vertikalni osi premično vpeto na ohišje vitla na znane načine; premičnega vodila (12) vrvi (2) gibljivo vpetega v fiksno ohišje (11); vrvenice (13), po kateri teče vrv (2); ter vodilno-potisnega sestava (14), ki je vpet na gibljivo vodilo (12) vrvi, tako da se pritisni mehanizem (14) giblje sinhrono z vodilom (12) žične vrvi in je razdalja med sestavom (14) ter vodilom (12) žične vrvi vedno enaka ne glede na horizontalni položaj vodila (12) žične vrvi.The present invention belongs to the field of forestry winches, more precisely to the field of constructional details of winches, especially those attached to the upper pulley with an unwinding device. The invention relates to a pulley with improved wire rope guidance and a winch with said pulley, which consists of: a fixed housing (11) which is movably clamped in the vertical axis to the winch housing in known ways; of the movable guide (12) of the rope (2) flexibly clamped in the fixed housing (11); cord (13), along which the rope (2) runs; and the guide-push assembly (14), which is clamped to the flexible guide (12) of the rope, so that the pressing mechanism (14) moves synchronously with the guide (12) of the wire rope and the distance between the assembly (14) and the guide (12) is of the wire rope is always the same regardless of the horizontal position of the guide (12) of the wire rope.

Description

ŠKRIPEC Z IZBOLJŠANIM VODENJEM ŽIČNE VRVI IN VITEL Z OMENJENIM ŠKRIPCEMPULLEY WITH IMPROVED WIRE ROPE GUIDANCE AND WINCH WITH SAID PULLEY

Področje tehnikeThe field of technology

Pričujoči izum spada na področje gozdarskih vitlov, natančneje na področje konstrukcijskih podrobnosti vitlov, še posebno vezanih na zgornji škripec z odvijalno napravo. Izum se nanaša na škripec z izboljšanim vodenjem žične vrvi in vitel z omenjenim škripcem.The present invention belongs to the field of forestry winches, more precisely to the field of constructional details of winches, especially those attached to the upper pulley with an unwinding device. The invention relates to a pulley with improved wire rope guidance and a winch with said pulley.

Ozadje izuma in tehnični problemBackground of the Invention and Technical Problem

Običajno imajo gozdarski vitli zgornji škripec in spodnji škripec, preko katerih se žična vrv navija na navijalni boben in s tem vleče breme proti vitlu. Spodnji škripec se uporablja v primeru, kadar želi uporabnik znižati težišče in je s tem traktor bolj stabilen. Do sedaj znani škripci imajo odvijalne kolute, ki naj bi preprečevali ali vsaj omejevali izpad vrvi iz škripca v območju med vrvenico in vodilom oziroma vstopnim ustjem vrvi. Omenjeni odvijalni koluti so pri znanih rešitvah nameščeni na ohišju zgornjega škripca, kar pa pogosto ne preprečuje izpada vrvi. Namreč, zgornji škripec se giblje v vertikalni osi za približno 180°, medtem ko se vodilo žične vrvi v horizontalni osi giblje za približno 115°, zaradi te razlike pa lahko posledično izstopa žična vrv med odvijalnimi koluti ter vodilom žične vrvi. Ta problem je še posebno očiten v primeru, ko je vodilo žične vrvi pri odvijanju obrnjeno navzdol, na primer, ko je žična vrv napeljana skozi spodnji škripec. Ker sta razdalja in kot med odvijalnimi koluti ter vodilom žične vrvi velika, se večkrat zgodi, da žična vrv med odvijalnimi koluti ter vodilom žične vrvi izstopi, v ekstremnih primerih pa se lahko tudi zavozla. Še večja verjetnost za tak dogodek je pri poškodovani vrvi. V kolikor uporabnik vklopi vleko in ne opazi dislocirane ali zavozlane vrvi, se lahko poškoduje oziroma pretrga žično vrv bodisi poškoduje dele vitla. Ker lahko uporabnik vitla spregleda, da je žična vrv izstopila iz škripca, zlasti, ko je vklopljeno trajno odvijanje žične vrvi, je zato zaželeno, da je škripec prilagojen za ustrezno vodenje vrvi, ki naj bi preprečevalo tovrstne izpade vrvi. Obstoječe rešitve vključujejo razne gibljive pokrove in sornike, ki so med delom izpostavljeni ter se hitro poškodujejo ali se zatikajo.Forestry winches usually have an upper pulley and a lower pulley, through which the wire rope is wound onto the take-up drum and thereby pulls the load towards the winch. The lower pulley is used when the user wants to lower the center of gravity and thus make the tractor more stable. Pulleys known up to now have unwinding discs, which are supposed to prevent or at least limit the rope from falling out of the pulley in the area between the rope and the guide or the entrance of the rope. In known solutions, the mentioned unwinding reels are installed on the housing of the upper pulley, which often does not prevent the rope from falling out. Namely, the upper pulley moves in the vertical axis by about 180°, while the wire rope guide moves in the horizontal axis by about 115°, and because of this difference, the wire rope may come out between the unwinding reels and the wire rope guide. This problem is particularly evident when the wire rope guide is facing downwards during unwinding, for example when the wire rope is fed through the lower pulley. Since the distance and angle between the unwinding reels and the wire rope guide are large, it often happens that the wire rope between the unwinding reels and the wire rope guide comes out, and in extreme cases it can also get knotted. The probability of such an event is even higher with a damaged rope. If the user turns on the traction and does not notice the dislocated or knotted rope, the wire rope may be damaged or broken or parts of the winch may be damaged. Since the winch user may not notice that the wire rope has come out of the pulley, especially when the permanent wire rope unwinding is engaged, it is therefore desirable that the pulley is adapted for proper rope guidance, which should prevent such rope losses. Existing solutions include various flexible covers and bolts that are exposed during work and are quickly damaged or stuck.

Tehnični problem, ki ga rešuje izum, je kako učinkovito preprečiti izstop žične vrvi med odvijalnimi koluti in vodilom žične vrvi, še posebno v primeru, ko se vlečenje bremena izvaja tudi preko spodnjega škripca, ki zagotavlja večjo stabilnost.The technical problem solved by the invention is how to effectively prevent the wire rope from coming out between the unwinding reels and the wire rope guide, especially in the case when the load is also pulled via the lower pulley, which ensures greater stability.

Stanje tehnikeState of the art

Patent SI22855 opisuje napravo za kontroliranje navijanje in odvijanje vrvi preko škripca, kjer prostorsko oziroma tridimenzionalno prilagoditev žične vrvi, ki potuje preko škripca, uravnava nihajni nosilec z vodilno-potisnimi kolesi, ki ju pritiskata dve vzmeti nastavljivi z vijakoma nihajnega nosilca. Ta nosilec je nameščen na ohišje škripca, ob premikanju vodenja vrvi pa se še vedno lahko ustvari vrzel, kjer lahko vrvi izstopi.Patent SI22855 describes a device for controlling the winding and unwinding of a rope via a pulley, where the spatial or three-dimensional adjustment of the wire rope traveling over the pulley is regulated by an oscillating support with guide-push wheels pressed by two springs adjustable by the screws of the oscillating support. This bracket is mounted on the pulley housing and moving the rope guide can still create a gap where the rope can exit.

Patent SI25044 opisuje škripec, ki ga sestavlja fiksno ohišje in gibljivo ohišje z vodilom vrvi, pri čemer je škripec dodatno opremljen z omejevalom žične vrvi, ki ima palico vodeno v utoru desne in leve stranice fiksnega ohišja. Palica je krmiljena s krivuljo fiksno nameščeno na desno in levo stranico gibljivega ohišja. Kontakt palice z utorom in krivuljo je v območju od najmanjšega tveganja do največjega tveganja izstopa žične vrvi iz odvijalne naprave pred vodilom vrvi. Krivulja je oblikovana z nižjo višino v območju povečanega tveganja in po zveznem prehodu v višjo višino v območju zmanjšanega tveganja. Krivulja ima na vsakem koncu oblikovan kavelj za prisilni pomik palice in nižja višina krivulje omogoča prehod palice v utoru, višja višina krivulje to preprečuje. Opisano omejevalo ob premikih gibljivega ohišja z vodilom vrvi v smeri proti navzdol še vedno dopušča dovolj veliko vrzel, kjer lahko vrvi izstopi iz škripca, kar je razvidno tudi iz slik omenjenega patenta. Ta rešitev tehničnega problema torej ne rešuje na dovolj zanesljiv način.Patent SI25044 describes a pulley consisting of a fixed housing and a movable housing with a rope guide, the pulley being additionally equipped with a wire rope stop having a rod guided in a groove on the right and left sides of the fixed housing. The rod is controlled by a curve fixed to the right and left sides of the flexible housing. The contact of the rod with the groove and the curve is in the range from the least risk to the greatest risk of the wire rope exiting the unwinding device in front of the rope guide. The curve is formed with a lower height in the area of increased risk and after a federal transition to a higher height in the area of reduced risk. The curve has a shaped hook at each end to force the rod to move and a lower curve height allows the rod to pass through the groove, a higher curve height prevents this. The described limiter still allows a sufficiently large gap when the flexible housing with the rope guide moves downwards, where the rope can exit the pulley, which is also evident from the images of the mentioned patent. This solution therefore does not solve the technical problem in a sufficiently reliable way.

Patent SI25661 se nanaša na gozdarski vitel z izpopolnjenim varovanjem med vodenjem vlečne vrvi v območju zgornjega škripčnika. Omenjeni škripčnik je opremljen z vodilom vlečne vrvi, ki obsega vodilno pušo, skozi katero je vstavljena vlečna vrv. Omenjena vodilna puša je pričvrščena na dvojici krakov, ki sta razporejena vsak na svoji strani omenjene vrvenice in skupaj z omenjeno vodilno pušo vsaj za določen kot relativno glede na ohišje zgornjega škripčnika zasukljiva okoli omenjene horizontalne geometrijske osi, okoli katere je sicer vrtljiva tudi omenjena vrvenica. V območju med ohišjem zgornjega škripčnika v bližini vrvenice in vodilom vlečne vrvi je nameščeno varovalo vlečne vrvi, tako da vsaj v pretežni meri zastira v obodni smeri vrvenice potekajočo vrzel med okrovom zgornjega škripčnika in vodilom vlečne vrvi. Varovalo je sestavljeno iz dveh členkasto povezanih varovalnih sklopov, pri čemer je prvi izmed varovalnih sklopov členkasto povezan z ohišjem škripca, drugi varovalni sklop pa je členkasto povezan z vodilom vlečne vrvi. Ob premikanju vodila vlečne vrvi se varovalo iztegne ali pa zloži v pokončen položaj, kar nudi določeno zaščito pred izpadom vrvi, vendar pa tudi pri tej rešitvi pride do vrzeli med varovalom in ustjem vodila vrvi, ko je le to obrnjeno navzdol.Patent SI25661 relates to a forestry winch with improved protection while guiding the towing rope in the area of the upper pulley. Said pulley is equipped with a towing rope guide comprising a guide bush through which the towing rope is inserted. Said guide bushing is attached to a pair of arms, which are arranged on each side of said cord and together with said guide bush, at least for a certain angle relative to the housing of the upper pulley, it is rotatable around said horizontal geometric axis, around which said cord is also rotatable. In the area between the housing of the upper pulley near the sheave and the guide of the tow rope, the protector of the tow rope is installed, so that it covers at least to a large extent the gap running in the circumferential direction of the sheave between the casing of the upper pulley and the guide of the tow rope. The guard consists of two hinged safety assemblies, the first of the safety assemblies is hinged to the pulley housing, and the second safety assembly is hinged to the pull rope guide. When the towing rope guide is moved, the guard extends or folds into an upright position, which provides some protection against the rope falling out, but even with this solution, there is a gap between the guard and the mouth of the rope guide when it is only facing down.

Opisane znane rešitve torej ne rešujejo problema, ko vrv prihaja od spodaj in je vodilo vrvi obrnjeno navzdol. Konstrukcija pričujočega izuma ta problem rešuje in se posledično razlikuje od opisanih rešitev.The described known solutions therefore do not solve the problem when the rope comes from below and the rope guide is facing downwards. The construction of the present invention solves this problem and consequently differs from the described solutions.

Opis rešitve tehničnega problemaDescription of the solution to the technical problem

Tehnični problem je rešen kot je predstavljeno v neodvisnem patentnem zahtevku, medtem ko so prednostne izvedbe rešitve tehničnega problema predstavljene v odvisnih zahtevkih.The technical problem is solved as presented in the independent patent claim, while preferred embodiments of the solution to the technical problem are presented in the dependent claims.

Škripec z izboljšanim vodenjem žične vrvi, ki učinkovito preprečuje izpad vrvi v vseh položajih, je sestavljen iz fiksnega ohišja, ki je v vertikalni osi vrtljivo vpeto na ohišje vitla na znane načine, ter iz gibljivega vodila vrvi, ki je gibljivo vpeto v fiksno ohišje, in vrvenice, preko katere poteka vrv, pri čemer je škripec opremljen z prilagodljivim pritisnim mehanizmom, ki je vpet na gibljivo ohišje vodila vrvi. Pritisni mehanizem je nameščen tako, da se premakne ob premiku ohišja vodila vrvi, s čemer se razdalja med omenjenim sestavom in vodilom vrvi ne spreminja, kar učinkovito ščiti vrv pred izpadom iz škripca. Zaradi sestava in njegovega vpetja je položaj vrvi v območju pritisnega mehanizma vedno tangenten na vrvenico, kar je optimalno za zanesljivo vodenje vrvi.The winch with improved wire rope guidance, which effectively prevents the rope from falling out in all positions, consists of a fixed housing, which is rotatably clamped to the winch housing in the vertical axis in known ways, and a flexible rope guide, which is movably clamped to the fixed housing, and a sheave over which the rope passes, the sheave being equipped with a flexible pressure mechanism which is clamped to the flexible housing of the rope guide. The pressure mechanism is arranged to move when the rope guide housing is moved, thereby keeping the distance between said assembly and the rope guide unchanged, effectively protecting the rope from falling out of the pulley. Due to the composition and its fastening, the position of the rope in the area of the pressure mechanism is always tangential to the cord, which is optimal for reliable rope guidance.

Znane rešitve se torej razlikujejo od pričujočega izuma po tem, da njihova konstrukcija ne omogoča, da bi se varovalo oziroma omejevalo premaknilo skupaj z vodilom žične vrvi, medtem ko je bistvo izuma, da se razdalja med pritisnim mehanizmom in vodilom vrvi ne spreminja ter tako v vseh položajih vodila žične vrvi preprečuje izpadanje žične vrvi med odvijalno napravo in vodilom žične vrvi.Known solutions therefore differ from the present invention in that their construction does not allow the guard or limiter to move together with the wire rope guide, while the essence of the invention is that the distance between the pressure mechanism and the rope guide does not change, and thus in in all positions of the wire rope guide prevents the wire rope from falling out between the unwinding device and the wire rope guide.

Pritisni mehanizem je lahko oblikovan na katerikoli primeren način, prednostno pa je zasnovan kot nosilec, ki ima v svoji notranjosti nameščen vsaj en, prednostno dva ali več, optimalno dva vodilno-potisna koluta. Vodilno-potisni koluti so lahko prosto vrteči, lahko pa so tudi gnani. V primeru sledenjega so lahko gnani vsi koluti ali pa le eden izmed njih. Koluta imata prednostno vbočen polkrožni utor, v katerega lepo nalega vrv, ki poteka po vrvenici škripca. Sicer pa utor kolutov ni nujen, saj delujejo tudi verzije brez utorov. Kolut je nameščen preko sornika, puše ali drugega primernega elementa ter krogličnega ali drugega primernega ležaja oziroma primernega elementa, kot je puša. Ohišje vodilno potisnih kolutov je prednostno preko vijakov, lahko pa na katerikoli drug primeren način, prilagodljivo vpeto na ohišje vodila vrvi hkrati pa vsaj ena tlačna vzmet, prednostno dve ali več tlačni vzmeti povzročajo pritisk vodilno potisnih kolutov na gnano vrvenico. Posledično se vodilno potisni koluti gibljejo z ohišjem vodila vrvi, hkrati pa je zagotavljeno tridimenzionalno prilagajanje gnane vrvenice in potisnih kolutov glede na položaj vrvi v utoru vrvenice in kolutov.The pressure mechanism can be designed in any suitable way, but it is preferably designed as a support that has at least one, preferably two or more, optimally two guide-push discs installed in its interior. Guide-push pulleys can be free-rotating, but they can also be driven. In the case of tracking, all reels can be driven or only one of them. The reels preferably have a concave semicircular groove, into which the rope that runs along the pulley cord fits nicely. Otherwise, the groove of the reels is not necessary, as versions without grooves also work. The reel is mounted via a bolt, bushing or other suitable element and a ball or other suitable bearing or a suitable element such as a bushing. The housing of the guide pusher pulleys is preferably via screws, but it can be flexibly clamped to the rope guide housing in any other suitable way, while at the same time at least one pressure spring, preferably two or more pressure springs cause pressure of the guide pusher pulleys on the driven rope. As a result, the guide push pulleys move with the rope guide housing, and at the same time, a three-dimensional adjustment of the driven rope and push pulleys is ensured according to the position of the rope in the groove of the rope and pulleys.

Opisani škripec je lahko nameščen na katerikoli vitel ali katero drugo primerno delovno napravo, pri čemer se škripec prednostno namesti na hidravlični vitel.The described pulley can be installed on any winch or any other suitable working device, whereby the pulley is preferably installed on a hydraulic winch.

Odvijalni škripec z izboljšanim vodenjem žične vrvi in vitel z omenjenim odvijalnim škripcem po izumu bo v nadaljevanju podrobneje opisan s pomočjo izvedbenega primera in slik, ki prikazujejo:The unwinding pulley with improved guidance of the wire rope and the winch with said unwinding pulley according to the invention will be described in more detail in the following with the help of an example and pictures showing:

Slika 1a Znan škripec v stanju, v katerem se vleče breme preko spodnjega škripcaFigure 1a A known pulley in the state in which the load is pulled via the lower pulley

Slika 1b Znan škripec kadar izstopi žična vrv in se naredi zankaFigure 1b The familiar pulley when the wire rope comes out and a loop is made

Slika 2 Škripec po izvedbenem primeru, kjer je vodilo vrvi obrnjeno navzdolFigure 2 Pulley according to the implementation example, where the rope guide is facing downwards

Slika 3 Škripec po izvedbenem primeru, kjer je vodilo vrvi obrnjeno navzgorFigure 3 Pulley according to the implementation example, where the rope guide is facing upwards

Slika 4 Eksplozijska risba vodilno-potisnega sestavaFigure 4 Exploded view of the guide-thrust assembly

Sliki 1 a in Ib prikazujeta znan odvijalni škripec 1', ki je sestavljen iz: - fiksnega ohišja 11' vrtljivo vpetega v osi 11 a na ohišje vitla, - premičnega vodila 12' vrvi 2' gibljivo vpetega v fiksno ohišje 11', - vrvenice 13', po kateri teče vrv 2', terFigures 1a and 1b show a known unwinding pulley 1', which consists of: - a fixed housing 11' rotatably clamped in the axis 11a to the winch housing, - a movable guide 12' a rope 2' movably clamped in a fixed housing 11', - a rope 13', along which runs the rope 2', ter

- pritisnega mehanizma 14' nameščenega na fiksno ohišje 11' škripca T, ki se ne more premikati ob premiku vodila 12' vrvi.- the pressure mechanism 14' mounted on the fixed housing 11' of the pulley T, which cannot move when the guide 12' of the rope moves.

Zaradi slednjega lahko iz škripca 1' izstopi žična vrv 2' in se v najslabšem primeru naredi zanka, tako kot je prikazano na sliki 2. V takšnem primeru mora uporabnik biti previden ali mora poskrbeti, da se vrv izravna.Due to the latter, the wire rope 2' can come out of the pulley 1' and in the worst case a loop is formed, as shown in figure 2. In such a case, the user must be careful or must ensure that the rope is straightened.

Rešitev problema, kot je prikazana na slikah 2 do 4, je zasnovana tako, da je škripec 1 opremljen z pritisnim mehanizmom 14, kije vpet na gibljivo vodilo 12 vrvi. Posledično se pritisni mehanizem 14 po horizontalni osi giblje sinhrono z vodilom 12 žične vrvi in je razdalja med mehanizmom 14 ter vodilom 12 žične vrvi vedno enaka ne glede na horizontalni položaj vodila 12 žične vrvi. Ker se glavni odvijalni kolut pri odvijanju vrti v smeri proti vodilu žične vrvi, je skoraj nemogoče, da bi žična vrv izstopila iz škripca v območju med odvijalnimi koluti in vodilom.The solution to the problem, as shown in figures 2 to 4, is designed in such a way that the pulley 1 is equipped with a pressure mechanism 14, which is clamped on the flexible guide 12 of the rope. As a result, the pressing mechanism 14 moves along the horizontal axis synchronously with the guide 12 of the wire rope and the distance between the mechanism 14 and the guide 12 of the wire rope is always the same regardless of the horizontal position of the guide 12 of the wire rope. Since the main unwinding reel rotates in the direction towards the wire rope guide when unwinding, it is almost impossible for the wire rope to come off the pulley in the area between the unwinding reels and the guide.

Pritisni mehanizem 14 je po izvedbenem primeru, kot je prikazan na sliki 4, zasnovan kot ohišje oziroma nosilec 141, ki ima v svoji notranjosti nameščena dva vodilnopotisna koluta 142. Koluta 142 imata vbočen polkrožni utor 142a, v katerega lepo nalega vrv 2, ki poteka po vrvenici 13 škripca. Vsak kolut 142 je nameščen preko sornika 143 ali drugega primernega elementa ter krogličnega ali drugega primernega ležaja 144. Vmes so zagotovljeni še podložke 146 in vskočniki 147, kot je prikazano na sliki. Vskočniki so za osno varovanje sornikov. Alternativno, so slednji lahko varovani z razcepkami, vzmetnim zatičem, matico ali drugimi podobnimi elementi. Podložke služijo za zagotavljanje fizične distance med potisnim kolutom ter ohišjem. Celotno ohišje 141 vodilno-potisnih kolutov 142 je pritrjeno z dvema vijakoma 148 na ohišje vodila 12 vrvi. Na ohišje 141 sta montirani dve tlačni vzmeti 145, ki celotno ohišje 141 pritiskata proti gnani vrvenici. Zaradi prilagodljivega vpetja ter tlačnih vzmeti 145 se potisni koluti 142 lahko prilagajajo na gnano vrvenico oziroma na žično vrv. Posledično se vodilno potisni koluti gibljejo z ohišjem vodila vrvi hkrati pa zagotavlja tridimenzionalno prilagajanje gnane vrvenice in potisnih kolutov glede na položaj vrvi v utoru vrvenice in kolutov.The pressing mechanism 14, according to the embodiment shown in Figure 4, is designed as a housing or a support 141, which has two guide thrust pulleys 142 installed inside it. The pulleys 142 have a concave semicircular groove 142a, into which the rope 2, which according to the string 13 of the pulley. Each disc 142 is mounted via a bolt 143 or other suitable element and a ball or other suitable bearing 144. Washers 146 and spring washers 147 are also provided in between, as shown in the figure. The spring clips are for the axial protection of the bolts. Alternatively, the latter can be secured by cotter pins, a spring pin, a nut or other similar elements. The washers serve to ensure the physical distance between the pusher pulley and the housing. The entire housing 141 of the guide-push pulleys 142 is attached with two screws 148 to the guide housing 12 of the rope. Two pressure springs 145 are mounted on the housing 141, which press the entire housing 141 against the driven pulley. Due to the adjustable clamping and pressure springs 145, the push reels 142 can be adjusted to the driven rope or to the wire rope. As a result, the guide push sheaves move with the rope guide housing and at the same time provide three-dimensional adjustment of the driven sheave and push sheaves according to the position of the rope in the groove of the sheave and sheaves.

Claims (9)

1. Škripec (1) z izboljšanim vodenjem žične vrvi, ki je sestavljen iz:1. Pulley (1) with improved wire rope guidance, consisting of: - ohišja (11), ki je v vertikalni osi (11 a) vrtljivo vpeto na ohišje vitla,- the housing (11), which is rotatably mounted on the winch housing in the vertical axis (11 a), - premičnega vodila (12) vrvi (2) gibljivo vpetega v fiksno ohišje (11) okoli osi vrtišča vrvenice (13),- the movable guide (12) of the rope (2) flexibly clamped into the fixed housing (11) around the pivot axis of the rope (13), - vrvenice (13), po kateri teče vrv (2), ter- cord (13), along which the rope (2) runs, and - pritisnega mehanizma (14) za vodenje vrvi, značilen po tem, da- a pressure mechanism (14) for guiding the rope, characterized in that - je pritisni mehanizem (14) vpet na gibljivo vodilo (12) vrvi, tako da se pritisni mehanizem (14) giblje sinhrono z vodilom (12) žične vrvi in je razdalja med sestavom (14) ter vodilom (12) žične vrvi vedno enaka ne glede na horizontalni položaj vodila (12) žične vrvi.- the pressure mechanism (14) is attached to the flexible guide (12) of the rope, so that the pressure mechanism (14) moves synchronously with the guide (12) of the wire rope and the distance between the assembly (14) and the guide (12) of the wire rope is always the same regardless of the horizontal position of the guide (12) of the wire rope. 2. Škripec z izboljšanim vodenjem žične vrvi po zahtevku 1, značilen po tem, da je pritisni mehanizem (14) lahko oblikovan na katerikoli primeren način, prednostno pa je zasnovan kot ohišje (141), ki ima v svoji notranjosti nameščen vsaj en, prednostno dva ali več, vodilno-potisna koluta (142).2. Pulley with improved wire rope guidance according to claim 1, characterized in that the pressing mechanism (14) can be designed in any suitable way, and is preferably designed as a housing (141) which has at least one installed inside, preferably two or more guide-push pulleys (142). 3. Škripec z izboljšanim vodenjem žične vrvi po predhodnem zahtevku, značilen po tem, da so vodilno-potisni koluti (142) lahko prosto vrteči ali gnani.3. Pulley with improved wire rope guidance according to the preceding claim, characterized in that the guide-push pulleys (142) can be freely rotating or driven. 4. Škripec z izboljšanim vodenjem žične vrvi po predhodnem zahtevku, značilen po tem, da so vodilno-potisni koluti (142) gnani, pri čemer so lahko gnani vsi koluti ali pa le eden izmed njih.4. Pulley with improved wire rope guidance according to the preceding claim, characterized in that the guide-push pulleys (142) are driven, whereby all pulleys or only one of them can be driven. 5. Škripec z izboljšanim vodenjem žične vrvi po predhodnem zahtevku, značilen po tem, da je vsak kolut (142) nameščen preko sornika (143), puše ali drugega primernega elementa ter krogličnega ali drugega primernega ležaja (144) ali elementa, kot je puša.5. Pulley with improved wire rope guidance according to the preceding claim, characterized in that each pulley (142) is mounted over a bolt (143), a bushing or other suitable element and a ball or other suitable bearing (144) or an element such as a bushing . 6. Škripec z izboljšanim vodenjem žične vrvi po kateremkoli izmed predhodnih zahtevkov od 2 do 5, značilen po tem, da ima vsak kolut (142) vbočen polkrožni utor (142a), v katerega lepo nalega vrv (2), ki poteka po vrvenici (13) škripca.6. Pulley with improved guidance of the wire rope according to any one of the preceding claims from 2 to 5, characterized in that each pulley (142) has a concave semicircular groove (142a) in which the rope (2) running along the rope ( 13) pulley. 7. Škripec z izboljšanim vodenjem žične vrvi po kateremkoli izmed predhodnih zahtevkov od 2 do 6, značilen po tem, da je ohišje (141) vodilno-potisnih kolutov (142) prednostno preko vijakov, lahko pa na katerikoli drug primeren način, prilagodljivo vpeto na ohišje vodila (12) vrvi, nad ohišjem (141) je montirana vsaj ena, prednostno pa sta montirani dve tlačni vzmeti (145), ki celotno ohišje (141) pritiskata proti gnani vrvenici (13).7. Pulley with improved guidance of the wire rope according to any one of the preceding claims from 2 to 6, characterized in that the housing (141) of the guide-push pulleys (142) is preferably via screws, but can be flexibly clamped on rope guide housing (12), at least one, preferably two pressure springs (145) are mounted above the housing (141), which press the entire housing (141) against the driven rope (13). 8. Škripec z izboljšanim vodenjem žične vrvi po kateremkoli izmed predhodnih zahtevkov od 2 do 7, značilen po tem, da so sorniki varovani z vskočniki (147), razcepkami, vzmetnim zatičem ali podobnim elementom, fizično distanco med potisnim kolutom in ohišjem pa zagotavljajo podložke (146).8. Pulley with improved wire rope guidance according to any one of the preceding claims from 2 to 7, characterized in that the bolts are protected by pop-ups (147), splits, spring pins or similar elements, and the physical distance between the push pulley and the housing is provided by washers (146). 9. Vitel s škripcem po kateremkoli izmed predhodnih zahtevkov.9. A winch with a pulley according to any one of the preceding claims.
SI202100214A 2021-12-08 2021-12-08 Pulley with improved wire rope guidance and the winch with said pulley SI26287A (en)

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SI202100214A SI26287A (en) 2021-12-08 2021-12-08 Pulley with improved wire rope guidance and the winch with said pulley
EP22212372.1A EP4194389B1 (en) 2021-12-08 2022-12-08 A pulley with improved guiding of a rope and a winch with said pulley

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SI22855A (en) * 2008-08-01 2010-02-26 PIŠEK - VITLI KRPAN, d.o.o. Device for controlled winding and unwinding of wire rope/spun wire cable
SI24540B (en) * 2013-11-08 2018-01-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Logging winch with advanced control assembly for controlled unwinding drawing rope from a winding drum
SI25044A (en) 2015-08-21 2017-02-28 Uniforest D.O.O. Wire rope limiter at unwinding device of forestry winch
SI25661A (en) 2018-06-01 2019-12-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Forestry winch with sophisticated protection while guiding the tow rope in the area of upper pulley

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