SI22796A

SI22796A - Protection device against accidental derailing of rope from a pulley,particularly with forestry winches

Info

Publication number: SI22796A
Application number: SI200800145A
Authority: SI
Inventors: PAN Iztok Ĺ
Original assignee: Tajfun Planina Proizvodnja Strojev, D.O.O.
Priority date: 2008-06-03
Filing date: 2008-06-03
Publication date: 2009-12-31

Abstract

The protection device against accidental derailing of rope from a pulley (4) consists of at least a pin (11) and a stem (12) with an integrated spring (123) which are firmly interconnected. The pin (11) can be past the pulley (4) inserted through the coaxial openings (211, 221) which are at corresponding locations available in the mutually displaced walls (21, 22) of the enclosure (2), while through the specified walls (21, 22) an axis (3) is running through the freely rotating pulley (4). The stem (12) is firmly connected to the aforementioned pin (11) which can be shifted in the direction of its longitudinal axis from the position of fitting the aforementioned openings (211, 221) in the walls (21, 22) of the enclosure (2) to the position of fitting only one opening (221) in the wall (22) against the spring (123) force, which is during this supported against the corresponding wall (22) of the enclosure (2). The stem (12) which is on its free end (121) reaching towards the interior of the enclosure (2) past the pulley (4) equipped with a limiter (122), is designed parallel to the pin (11) and inserted through openings (222) in the corresponding wall (22) on that side of the enclosure (2) which the pin (11) can be moved to against the force of the aforementioned spring (123), while the specified stem (11) with pin (11) is firmly connected via a link (13) located outside the enclosure (2).

Description

Varovalo proti nehotenemu snetju vrvi z vrvenice, zlasti pri gozdarskem vitluIt is a safeguard against the unintentional removal of rope from the rope, especially with a winch

Izum je na področju delovnih postopkov in transporta uvrščen k pogonskim sklopom škripčevij in naprav za dviganje, zlasti gozdarskim vitlom in podobnim, večidel vsaj približno v horizontalni smeri delujočim napravam, še zlasti pa zadeva konstrukcijske podrobnosti tovrstnih naprav. Po drugi strani je izum v splošnem lahko uvrščen na področje strojnih elementov in transmisij, namreč vrvenicam.In the field of working procedures and transportation, the invention is classified as a set of pulleys and lifting gears, in particular forestry winches and the like, having grown at least approximately horizontally to the operating devices, and in particular concerns the structural details of such devices. On the other hand, the invention can generally be classified in the field of machine elements and transmissions, namely twine.

Pri tem je izum osnovan na problemu, kako zasnovati preprosto in priročno varovalo, s katerim bo po eni strani možno zanesljivo preprečiti nehoteno snetje vrvi z vrvenice v okrovu škripca, po drugi strani pa se izogniti neugodnemu štrlenju varovala iz okrova.The invention is based on the problem of how to design a simple and convenient guard, which, on the one hand, will be able to reliably prevent inadvertent removal of the rope from the cord in the pulley housing and, on the other, to avoid the unfavorable protrusion of the guard from the housing.

Strokovnjakom je znano, da na gozdarskih vitlih uporabljajo škripce, ki so namenjeni vodenju vrvi, in sicer predvsem zaradi preusmeritve le-te iz različnih možnih smeri v želeno smer, ki omogoča pravilno navijanje vrvi na boben. Tovrsten škripec sestoji iz okrova, ki obsega vsaj dve med seboj razmaknjeni steni, skozi kateri poteka os, na kateri je prosto vrteče se uležajena vrvenica. Ker vrv, ki je vstavljena v obodnem žlebu vrvenice, obdaja zgolj del obsega vrvenice, pri vlečenju oz. natekanju vrvi na vrvenico prihaja do zelo spremenljivih pogojev tako v pogledu smeri kot tudi jakosti obremenitve vrvi, pri čemer je treba upoštevati tudi določeno prožnost same vrvi. Z namenom, da bi preprečili nehoteno snetje vrvi z vrvenice, je v bližini slednje v okrovu škripca predvideno varovalo.It is well known to those skilled in the art that forestry winches use pulleys designed to guide the rope, mainly to divert the rope from different possible directions to the desired direction, allowing the rope to be wound correctly onto the drum. Such a pulley consists of a housing comprising at least two spaced apart walls through which an axle is provided, on which is a freely rotating bearing. Since the rope inserted in the circumferential groove of the rope, it encloses only a part of the circumference of the rope, when it is pulled or pulled. the rope running on the rope results in very variable conditions, both in terms of direction and the load capacity of the rope, taking into account some flexibility of the rope itself. In order to prevent the rope from being unintentionally removed from the rope, a guard is provided near the latter in the pulley housing.

Varovalo predstavlja zatič, ki je podobno kot os vrvenice vstavljen skozi soosni odprtini v omenjenih stenah okrova in razporejen na radiju, ki je večji od radija vrvenice in v obodni smeri na tisti lokaciji, kjer bi lahko prišlo do izstopa vrvi iz žleba vrvenice in s tem do nehotenega snetja vrvi. Med uporabo vitla pa se občasno zgodi, daje potrebno vrv sneti z vrvenice, kar pomeni, daje treba začasno odstraniti varovalo iz območja varovanja in ga zatem po ponovni namestitvi vrvi spet vrniti v položaj varovanja. V ta namen je omenjenemu zatiču soosno priključeno steblo, ki štrli ven iz okrova škripca, in sicer v tisto smer, v katero se med začasno odstranitvijo iz območja varovanja premakne omenjeni zatič. Na prostem koncu stebla je na voljo omejevalo, med slednjim in pripadajočo steno okrova pa je na steblu nameščena tlačna vzmet. Tako je možno zatič iz območja varovanja umakniti proti sili omenjene vzmeti ter zatem sneti in ponovno namestiti vrv na vrvenico, nakar omenjena vzmet varovalo samodejno vrne v položaj varovanja. Problem tovrstne zasnove je v tem, da omenjeno steblo skupaj z vzmetjo in omejevalom štrli iz okrova, kar ni problematično zgolj z estetskega vidika, marveč tudi iz čisti praktičnih razlogov. Med spravilom lesa ali tudi med transportom vitla lahko pride do zatikanja predmetov ob štrleče dele ter posledično do deformacij ali celo lomov štrlečih delov. Celo v primeru že manjše deformacije stebla in/ali zatiča je zanesljivost delovanja varovala vprašljiva, s čimer je varno delo z vitlom postavljeno pod vprašaj.The guard is a pin, which, similar to the axis of the string, is inserted through the coaxial openings in said walls of the housing and arranged on a radius larger than the radius of the string and in a circumferential direction at the location where the rope may exit from the groove of the string and thereby until the rope is unintentionally removed. However, when using the winch, it occasionally happens that the rope must be removed from the rope, which means that the guard must be temporarily removed from the safeguard area and then returned to the safeguard position after reinstalling the rope. To this end, the stem is coaxially connected by a stem projecting out of the pulley housing in the direction in which the said pin moves during temporary removal from the security zone. A stop is available at the free end of the stem, and a pressure spring is mounted between the latter and the associated wall of the casing. Thus, it is possible to remove the pin from the securing zone against the force of said spring and then remove and re-attach the rope to the rope, after which said spring automatically returns the guard to the securing position. The problem with this design is that the said stem, together with the spring and restraint, protrudes from the housing, which is not only problematic from the aesthetic point of view, but also for purely practical reasons. During the harvesting of the timber or during the transport of the winch, objects may be pinned against the projecting parts and may result in deformation or even fracture of the projecting parts. Even in the case of minor deformation of the stem and / or pin, the reliability of the guard is questionable, thus making the winch work in doubt.

Izum se nanaša na varovalo proti nehotenemu snetju vrvi z vrvenice, sestoječe iz v notranjost okrova škripca mimo vrvenice štrlečega zatiča in z njim togo povezanega stebla. Zatič je vstavljiv skozi med seboj soosni luknji, ki sta na ustrezni lokaciji na voljo v med seboj razmaknjenih stenah okrova, pri čemer skozi omenjeni steni sicer poteka tudi os na slednji prosto vrteče se vrvenice. Na omenjenem steblu je predvidena vzmet, omenjeni zatič pa je po izbiri premakljiv v smeri svoje vzdolžne osi iz položaja naleganja v obeh omenjenih luknjah v stenah okrova v položaj naleganja v zgolj eni luknji v steni proti sili omenjeni vzmeti, ki je pri tem oprta proti pripadajoči steni okrova. Po izumu je na svojem v notranjost okrova mimo vrvenice štrlečem prostem koncu z omejevalom na sebi nameščene vzmeti opremljeno steblo zasnovano vzporedno z zatičem in vstavljeno v skoznji luknji v pripadajoči steni na tisti strani okrova, proti kateri je sicer proti sili omenjene vzmeti premakljiv zatič, pri čemer omenjeno steblo z zatičem togo povezano preko izven okrova razporejene vezi. Pri tem je sestav zatiča, stebla in vezi prednostno opremljen z izven okrova razporejenim držalom. Omenjena vzmet, ki je prednostno tlačna vzmet, po izbiri lahko deloma sega v območje luknje, skozi katero poteka steblo. Nadalje omenjeno varovalo prednostno predstavlja razcepka. Še nadalje je vez, s katero sta med seboj togo povezana zatič in steblo, ploščato zasnovana in prirejena za naleganje na zunanji površini pripadajoče stene okrova.The invention relates to a guard against the unintentional removal of rope from a cord, consisting of a pulley inside the pulley case, past the cord of the projecting pin and its rigidly connected stem. The pin is insertable through coaxial holes, which are available at the appropriate location within the walls of the enclosure, spaced apart from each other, with the axis on the latter freely rotating through the said walls. A spring is provided on said stem, and said pin is optionally movable in the direction of its longitudinal axis from the recess position in both said holes in the walls of the enclosure to the recess position in only one hole in the wall against the force of said spring, which is thus supported against the corresponding the wall of the enclosure. According to the invention, on its inside of the casing, a stem, projecting parallel to the pin, is protruding past the projecting spur end of the projecting spring and is inserted in the through hole in the corresponding wall on the side of the casing against which the spring is moved against the force of said spring. the said stem being rigidly connected via an out-of-the-box spacer joint. In this case, the assembly of the pin, stem and linkage is preferably provided with an out-of-the-box holder. Said spring, which is preferably a pressure spring, can optionally partially extend into the area of the hole through which the stem passes. The aforementioned guard preferably represents a split. Furthermore, the bond with which the pin and the stem are rigidly connected is flat-shaped and adapted to fit on the outer surface of the corresponding wall of the housing.

Izum bo v nadaljevanju podrobneje obrazložen na osnovi primera izvedbe, ki je ponazorjen na priloženi skici, kjerThe invention will now be explained in more detail on the basis of the embodiment illustrated in the accompanying drawing, where

Sl. 1 kaže v perspektivi ponazorjeno in v pripadajočem škripcu gozdarskega vitla vgrajeno varovalo proti nehotenemu snetju vrvi z vrvenice;FIG. 1 shows in perspective an illustrated and in the associated pulley of the winch a built-in guard against unintentional removal of the rope from the rope;

Sl. 2 pa taisto varovalo, prav tako v vgrajenem stanju in v položaju varovanja, tokrat v delnem prerez u skozi škripec v ravnini varovala.FIG. 2 and the same guard, also in the built-in condition and in the guard position, this time in a partial section u through a pulley in the plane of the guard.

Na Sl. 1 je nazorno ponazorjen škripec, ki sestoji iz okrova 2 z med seboj razmaknjenima stenama 21, 22, skozi kateri poteka os 3, na kateri je med omenjenima stenama 21, 22 prosto vrteče se uležiščena vrvenica 4. Na odmiku od slednje je v območju med omenjenima stenama 21, 22 okrova 2 predvideno varovalo 5.In FIG. 1 is a clearly illustrated pulley consisting of a casing 2 spaced apart by walls 21, 22, through which an axis 3 extends, with rope 4 lying freely between said walls 21, 22. said walls 21, 22 of enclosure 2 provided guard 5.

Varovalo 1 sestoji iz zatiča 11, ki je vstavljen v med seboj soosnih skoznjih luknjah 211, 221 v omenjenih stenah 21, 22 okrova 2, in stebla 12, ki pa zatiču 11 ni soosno prioblikovano, marveč poteka vzporedno z omenjenim zatičem 11, pri čemer pa sta steblo 11 in zatič 12 med seboj togo povezana s pomočjo ustrezne vezi 13, ki se nahaja na zunanji strani okrova 2.The retainer 1 consists of a pin 11 inserted into the coaxially through holes 211, 221 in said walls 21, 22 of the housing 2, and a stem 12 which, however, is not coaxially shaped but runs parallel to said pin 11, wherein however, the stem 11 and the pin 12 are rigidly interconnected by means of a suitable link 13 located on the outside of the housing 2.

Kot je razvidno na Sl. 2, zatič 11 v položaju varovanja poteka skozi obe steni 21, 22 okrova 2 in je v prikazanem primeru pred hoteno odstranitvijo vrvi z vrvenice 4 ali tudi med ponovnim nameščanjem vrvi premakljiv proti desni, pri čemer je v vsakem primeru vstavljen vsaj v desni steni 22. Po drugi strani povsem zadostuje, če je steblo 12 vstavljeno zgolj v steni 22, v kateri je v vsakem primeru t.j. tudi pri izključenem oz. proti desni premaknjenem varovalu voden zatič 11. Na prostem koncu 121 stebla 12, ki pa se v vsakem primeru nahaja v notranjosti okrova 2 škripca, je predvideno omejevalo 122, med slednjim in pripadajočo steno 22 okrova 2 pa je vstavljena vzmet 123, ki je v prikazanem primeru tlačna vzmet. Omejevalo 122 v prikazanem primeru predstavlja klasična razcepka.As can be seen in FIG. 2, the pin 11 in the securing position extends through the two walls 21, 22 of the housing 2 and, in the shown case, is movable to the right before the rope is removed from the rope 4 or even during repositioning, in each case being inserted at least in the right wall 22 On the other hand, it is quite sufficient if the stem 12 is inserted only in the wall 22, in which in each case, e.g. even with the excluded or. guided pin 11 is moved to the right-hand guard, at the free end 121 of the stem 12, which in each case is located inside the pulley housing 2, a restraint 122 is provided, and a spring 123 is inserted between the latter and the associated wall 22 of the pulley 2. the example shown is a pressure spring. In the example shown, limiter 122 represents a classical split.

Kadar je za delovanje varovala predvidena večja dolžina vzmeti 123, je slednja po izbiri lahko podaljšana tudi v notranjost luknje 222, ki je v pripadajoči steni 22 okrova 2 prirejena za prejem stebla 12 varovala 1.Where a longer spring length of 123 is provided for the operation of the guard, the latter may optionally be extended into the interior of the hole 222, which is adapted to receive the shaft 12 of the guard 1 in the corresponding wall 22 of the housing 2.

Na Sl. 2 je varovalo ponazorjeno v položaju varovanja, kar pomeni, da zatič 11 poteka skozi obe steni 21,22 okrova 2, z zatičem 11 preko vezi 13 togo povezano steblo 12 pa zgolj skozi luknjo 222 v steni 22 in v notranjosti okrova 2 pri tem štrli proti nasprotni steni 21 okrova 2, pri steblo 12 in s tem posredno tudi zatič 11 v takem položaju drži vzmet 123.In FIG. 2, the guard is illustrated in the securing position, which means that the pin 11 extends through both walls 21,22 of the housing 2, and with the pin 11 through the connection 13 a rigidly connected stem 12 only through the hole 222 in the wall 22 and protrudes therein. against the opposite wall 21 of the housing 2, at the stem 12, and thus indirectly, the pin 11 holds the spring 123 in such a position.

Ko uporabnik namerava odstraniti ali namestiti vrv, izvleče zatič 11 v smeri proti desni po Sl. 2 in torej proti sili vzmeti 123, kar mu je možno olajšati s tem, daje na zatiču 11 na voljo primemo držalo 111. S tem se zatič 11 skupaj z vezjo 13 in steblom 12 pomakne proti desni, in sicer teoretično do te mere, kolikor to dopušča vzmet 123 ali omejevalo 122 na steblu 12. Zatem zahvaljujoč vzmeti 123 sledi samodejna vrnitev zatiča 11 in stebla 12 vključno z vezjo 13 v položaj varovanja.When the user intends to remove or install the rope, he pulls out the pin 11 in the right direction of FIG. 2, and thus against the force of the spring 123, which can be facilitated by the presence of a clamp 111 on the pin 11, thereby moving the pin 11 together with the link 13 and the stem 12 to the right, theoretically to the extent that this allows the spring 123 or the stop 122 on the stem 12. Then, thanks to the spring 123, the automatic return of the pin 11 and the stem 12, including the link 13, to the securing position.

Edina dela varovala po izumu, ki segata ven iz okrova 2 škripca, sta vez 13 in držalo 111. Vez 111 je lahko izvedena iz razmeroma neobsežnega in povrhu vsega ploščatega materiala, ki v ničemer ne ovira manipulacije predmetov v okolici okrova 2 škripca. Tudi držalo 111 je lahko izvedeno karseda priročno in neobsežno, kar pa je sicer sekundarnega pomena, saj bi celo morebitna znatna deformacija ali celo porušitev držala 111 v primeru zatikanja predmetov obenj praktično v ničemer ne mogla ogroziti zanesljivosti delovanja samega varovala.The only parts of the guard according to the invention extending out of the pulley box 2 are the tie 13 and the holder 111. The tie 111 can be made of relatively large and on top of all the flat material that does not in any way interfere with the manipulation of objects around the pulley box 2. The holder 111 can also be constructed as conveniently and extensively as possible, but this is of secondary importance, since even a substantial deformation or even destruction of the holder 111 in the event of contact with objects could practically in no way jeopardize the reliability of the guard itself.

Claims

1. A guard against the unintentional removal of a rope from a rope (4), consisting of a pin (11), past which can be inserted past the rope (4) through coaxial holes (211, 221), which are at a suitable location spaced apart the walls (21, 22) of the housing (2), the axis (3) extending through said walls (21, 22) to the latter of the freely rotating rope (4), as well as the stem (12), which is rigidly connected to said pin (11) and on which a spring (123) is provided, said pin (11) being optionally movable in the direction of its longitudinal axis from the recess position in both said holes (211, 221) in the walls (21, 22) housing (2) to the recess position in only one hole (221) in the wall (22) against the force of the spring (123), which is supported against the corresponding wall (22) of the housing (2), characterized in that the interior of the housing (2), past the rope (4), the projecting free end (121) with a stop (122), springs mounted on it (123), equipped with a stem (12) designed in parallel with the pin (11) and inserted into the through hole (222) in the associated wall (22) on the side of the housing (2), against which the spring (123) is otherwise moved against the force of said spring (11), with said stem (11) with a pin (11) rigidly connected beyond the enclosure (2) of the spaced link (13).

A retainer according to claim 1, characterized in that the assembly of the pin (11), the stem (12) and the ties (13) are provided with a holder (111) arranged outside the housing (2).

Fuse according to claim 1, characterized in that the spring (123) is a pressure spring.

The retainer according to claim 3, characterized in that the spring (123) extends in part into the area of the hole (222) through which the stem (12) passes.

Fuse according to claim 1, characterized in that the fuse (122) is a split.

6. A retainer according to claim 1 or 2, characterized in that the bond (13) with which the pin (11) and the stem (12) are rigidly interconnected are flat-shaped and adapted to fit on the outer surface of the associated wall (22). casing (2).