SI22712A

SI22712A - Pulley on forest winch

Info

Publication number: SI22712A
Application number: SI200800013A
Authority: SI
Inventors: Drago Pintar; AleĹˇ Marko
Original assignee: Uniforest, D.O.O.
Priority date: 2008-01-21
Filing date: 2008-01-21
Publication date: 2009-08-31

Abstract

The intention of the invention is to design a pulley on a forest winch without a rope guide and safe against an unintended access of upper extremities. The solution lies in pulley housing, whose two side wall edges are essentially more distant from the rope drum rotation point as the edge of the rope drum is. The width of the rope entry area into the housing is less than the width of the rope drum. The edge of the side walls is semicircularly shaped or equipped with a reinforcing profile. The two sides are stiffly bound together on the potential upper and lower path of the rope.

Description

Škripec na gozdarskem vitluA pulley on a forest winch

Predmet izuma je škripec na gozdarskem vitlu preko katerega je napeljana vrv z bobna do hlodovine. Škripec je vrtljivo vpet v ogrodje gozdarskega vitla in vsakokrat omogoča spremembo zasuka v smeri sile vleka vrvi. Moment za zasuk povzroči neposreden kontakt vrvi na škripec. Pri tem je izum osnovan na problemu, kako zasnovati ohišje za sprejetje neposrednega kontakta vrvi na ohišje škripca in preprečiti nehoten poseg zgornjih okončin v področje stiska med vrvjo in vrvenico.The subject of the invention is a pulley on a forestry winch through which a rope is routed from the drum to the log. The pulley is rotatably mounted in the frame of the winch, and in each case allows the rotation to be changed in the direction of the pulling force of the rope. The twisting moment causes direct contact of the rope to the pulley. The invention is based on the problem of how to design a housing for receiving direct contact of the rope on the pulley housing and preventing the upper limbs from accidentally interfering with the area of contact between the rope and the rope.

Najpogostejše rešitve so rešitve škripca z ohišjem v katerem je gibljivo nameščena na osi vrvenica. Na tej osi je gibljivo vpeto vodilo vrvi. Vrv poteka po vrvenici in skozi odprtino vodila v smeri hlodovine. Vsako spremembo smeri opravi kontakt vrvi z vodilom vrvi. Pomanjkljivost te rešitve je, daje za spremembo smeri potrebno imeti vodilo vrvi. To predstavlja dodatne elemente. Samo za spremembo smeri ni potrebna robustna izvedba vodila vrvi, potrebna pa je za preprečitev deformacije, kadar navijemo vrv z bobnom, da z vlečnim kavljem na vrvi obremeni vodilo vrvi s polno silo vleka. Vodilo vrvi dodatno predstavlja nevarnost stiska prstov roke.The most common solutions are solutions of a pulley with a housing in which it is movably mounted on the axle axis. A flexible rope guide is provided on this axis. The rope runs along the line and through the guide opening in the direction of the log. Each change of direction is made by contact of the rope with the rope guide. The disadvantage of this solution is that in order to change direction it is necessary to have a rope guide. This represents additional elements. Only the change of direction does not require a robust design of the rope guide, but is necessary to prevent deformation when winding the rope with the drum to load the rope guide with full pulling force by pulling the hook on the rope. The rope guide additionally poses a risk of fingers pinching.

Za odpravo pomanjkljivosti, je po izumu škripec na gozdarskem vitlu izveden v področju vstopa vrvi v škripec iz smeri vleka hlodovine tako, da sta roba stranic ohišja bistveno bolj oddaljena od vrtišča vrvenice kot je oddaljen rob vrvenice. Širina vstopnega področja vrvi v ohišje je manjša kot je širina vrvenice, sam rob stranic je polkrožno oblikovan. Stranici sta na zgornji in spodnji možni poti vrvi togo povezani.In order to remedy the drawbacks, according to the invention, the pulley on the forestry winch is made in the area of entry of the cord into the pulley from the direction of the log haul so that the edge of the sides of the casing is substantially farther from the pivot point than the distal edge of the cord. The width of the inlet area of the rope into the casing is smaller than the width of the rope and the edge of the sides is semicircularly shaped. The sides of the rope are rigidly connected at the upper and lower possible paths.

Po izumu pri škripcu na gozdarskem vitlu spremembo smeri opravi kontakt vrvi z zaobljeno stranico brez nevarnosti za poškodbo vrvi. V primeru obremenitve z vlečnim kavljem s polno silo vleka, deformacije prenese kompaktno ohišje s togo povezavo obeh delov stranic. Širina vstopnega področja vrvi in oddaljenost nevarnega področja stiska prepreči nevarnost stiska zgornji okončin med vrvenico in vrvjo.According to the invention, in the case of a pulley on the winch, the change of direction is made by contact of the rope with the rounded side without the risk of damage to the rope. In the case of a full-force towing hook, the deformation is transmitted by a compact housing with a rigid connection between the two sides of the sides. The width of the inlet area of the rope and the distance of the dangerous area of compression prevents the risk of compression of the upper limb between the rope and the rope.

Izum bo opisan na izvedbenem primeru in sliki, ki prikazujeThe invention will be described in the embodiment and in the drawing

51.1 Gozdarsko vitlo s škripcem51.1 Forestry winch with pulley

51.2 Škripec51.2 Pulley

S 1.3 Škripec v prerezuS 1.3 Pulley in section

S1.4 Škripec v prerezuS1.4 Cross section pulley

Na sliki 1 je prikazano gozdarsko vitlo z ogrodjem 2 in na bobnu 3 navito vrv 4, ki poteka od bobna 3 skozi škripec 1 do hlodovine v smeri H. Škripec 1 je vrtljiv v ogrodju 2 okoli simetrale 6.Figure 1 shows a forest winch with a frame 2 and a rope 4 wound on drum 3 extending from drum 3 through pulley 1 to log in direction H. Pulley 1 is rotatable in frame 2 around symmetry 6.

Na sliki 2 je prikazan škripec z v ohišju 9 na osi 8 nameščeno vrvenico 7. Stranici 10 ohišja 9 sta na zunanjem robu med seboj zunaj področja vstopa vrvi 4 povezani s togo povezavoFigure 2 shows a pulley with a row 7 housed in the housing 9 on the axis 8. The sides 10 of the housing 9 are connected to a rigid connection at the outer edge of each other outside the inlet area of the line 4.

11.11.

Na sliki 3 je prikazan škripec v prerezu z vrvenico 7 s širno jermenice A . V izvedbenem primeru sta prikazani stranici 10, katerih rob je ojačan z ojačitvenim profilom 12. Širina B med stranicama 10 je manjša kot širina A jermenice 7. Ojačitveni profil 12 je okroglega ali podobnega preseka, da prepreči pri kontaktu z vrvjo 4 poškodbo le te.Figure 3 shows a pulley in section with lanyard 7 with pulley A. In the embodiment, the sides 10 are shown, the edge of which is reinforced by the reinforcing profile 12. The width B between the sides 10 is smaller than the width A of the pulley 7. The reinforcing profile 12 is of circular or similar cross-section to prevent damage to the rope 4.

Izvedba roba je lahko izvedena neposredno iz materiala stranice in ukrivljen tako, da tvori širino B med stranicama 10 in z ustrezno polkrožno oblikovanim robom.The edge design may be derived directly from the material of the side and curved to form a width B between the sides 10 and with a corresponding semicircularly shaped edge.

Na sliki 4 je prikazan škripec v prerezu s točko nevarnosti stiska S in točko varne oddaljenosti V. Točko S predstavlja presečišče roba jermenice 7 in vrvi 4 in je od simetrale osi 8 oddaljena za polmer Rs. Točko V prestavlja presečišče roba stranice 10 in vrvi 4 in je od simetrale osi 8 oddaljena za polmer Rv. Razdaljo med točko nevarnosti stiska S in točko varne oddaljenosti V je razdalja Vr.Figure 4 shows a cross-section with a point of danger of compression S and a point of safe distance V. Point S represents the intersection of the edge of the pulley 7 and the rope 4 and is away from the symmetry of the axis 8 by a radius of Rs. Point V is the intersection of the edge of the side 10 and the rope 4 and is offset from the axis 8 by the radius Rv. The distance between the point of danger of distress S and the point of safe distance V is the distance Vr.

V odvisnosti od širine B se določi minimalna oddaljenost po standardu za varnostne razdalje, ki preprečujejo doseg nevarnih območij z zgornjimi udi. Razdalja Vr mora biti enaka ali večja od te določene minimalne oddaljenosti.Depending on the width B, a minimum distance is defined according to the standard for safety distances that prevent the danger areas with upper limbs from being reached. The distance Vr must be equal to or greater than this specified minimum distance.

Iz slike 3 in 4 je razvidno, daje oddaljenost roba stranice 10, kije od simetrale osi 8 oddaljen za polmer Rs, mnogo večja od oddaljenosti roba vrvenice 7, kije od simetrale osi 8 oddaljen za polmer Rv. Hkrati je širina B med stranicama 10 manjša kot širina A vrveniceIt is apparent from Figures 3 and 4 that the distance of the edge of the side 10 extending by a radius of axis 8 by a radius Rs is much greater than the distance of the edge of the line 7 extending from the symmetry of the axis 8 by a radius Rv. At the same time, the width B between the sides 10 is smaller than the width A of the string

7. Pri spremembi smeri vleka hlodovine je vedno omogočen samo kontakt vrvi 4 s stranico7. Only the rope 4 contact with the sideline is always enabled when changing the direction of hauling of the log

10.10.

Škripec 1 na gozdarskem vitlu omogoča vsakokrat spremembo zasuka v smeri vleka vrvi po izumu z neposrednim kratkim kontaktom vrvi 4 na rob stranice 10 ohišja 9 in usmeri jermenico v smeri vleke hlodovine. Nehoteni poseg z zgornjimi udi v nevarno področje škripca 1 konstrukcija po izumu prepreči poškodbo okončin med vrvjo 4 in vrvenico 7.The pulley 1 on the winch allows the change of turn in the direction of rope pulling according to the invention in each case by direct short contact of the rope 4 to the edge of the side 10 of the housing 9 and directs the pulley in the direction of hauling of the log. Inadvertent intervention with the upper limbs in the dangerous area of the pulley 1, the structure of the invention prevents damage to the extremities between the rope 4 and the rope 7.

Ohišje 9, z ukrivljenim robom stranice 10 ali ojačitvenim profilom 12, s povezanimi stranicami 10 s togima povezavama 11, predstavlja robustno rešitev, ki prepreči deformacije pri morebitni obremenitvi ohišja 9 z vlečnim kavljem s polno silo vleka.The housing 9, with the curved edge of the side 10 or the reinforcing profile 12, with the connected sides 10 with rigid connections 11, is a robust solution that prevents deformation of the housing 9 with full pulling force of the housing 9.

Legenda pozicijPosition legend

1 1 v Škripec v Pulley 11 11 Toga povezava A tight connection 2 2 Ogrodje Framework 12 12 Ojačitveni profil Reinforcement profile 3 3 Boben The drum 4 4 Vrv Rope Rs Rs Polmer Radius H H Smer do hlodovine Direction to the log Rv Rv Polmer Radius 6 6 Simetrala vrtišča The center of rotation Vr Vr Varnostna razdalja Safety distance 7 7 vrvenica twine A A širina width 8 8 Os Os B B širina width 9 9 ohišje housing S S Točka nevarnosti striga The point of danger of striga 10 10 stranici page V V Točka varne oddaljenosti Safe distance point

Claims

PATENT APPLICATIONS

1. A pulley on a forestry winch clamped in a frame and rotating about a symmetry, with a rope positioned from the drum through the pulley to the log, with a casing with a cord on the axle and sides of the casing, characterized in that the safety distance (Vr) is the distance between the point of danger of distress ( S), which represents the intersection of the edge of the pulley (7) and the rope (4) and is a radius (Rs) away from the axis of the axis (8), and the point at me of distance (V) that represents the intersection of the edge of the side (10) of the housing (9) ) and rope (4) and is more than zero radius (8) away from the axis (8) and gives a width (B) between the sides (10) smaller than the width (A) of the rope (7).

Forestry winch pulley according to claim 1, characterized in that the safety distance (Vr) is equal to or greater than the minimum distance according to the standard for safety distances preventing the reach of dangerous areas with upper limbs, depending on the width (B) between the sides (10).

3. A winch pulley according to claim 1, characterized in that the edge of the sides (10) can be made with a reinforcing profile (12) of circular or similar cross-section or curved with a corresponding semicircularly shaped edge.

Forestry winch pulley according to claim 1, characterized in that the sides (10) of the housing (9) on the edge outside the entry area of the rope 4 are interconnected by a rigid connection (H) ·