SE426049B

SE426049B - Winding safety, for example on a roll for winding bands, etc.

Info

Publication number: SE426049B
Application number: SE8102591A
Authority: SE
Inventors: L F Lenberg
Original assignee: Kabeldon Ab
Priority date: 1981-04-23
Filing date: 1981-04-23
Publication date: 1982-12-06
Also published as: SE8102591L

Abstract

A winding safety, designed to prevent the turning in locking position of a rotatable item 1 in one direction and to allow turning in the opposite direction, is designed with a latch part 7 belonging to the rotatable item where said latch part is in the form of a straight, preferably six-sided prism, concentric to the rotatable item and a hold fast 8 on the locking part, which hold fast has a recess 10 with a bottom and two opposing walls 11, 12 with separate heights, where the higher wall 11 is so high that during the turning of the locking part it turns in the allowed turning direction, and is constantly in contact with one of the locking part's corners, and with such a distance between the walls that the locking part's turn in the opposite turning direction is blocked due to the opposing corner's lying against the walls. <IMAGE>

Description

8102591-8 lÜ 15 20 25 FÖREDRAGEN UTFÖRINGSFORM Den uppfunna vridsäkringen exemplifieras med en vridsäkring för ett vridbart föremal, i detta fall en rulle, pa vilken ett band som star under dragspänning är upprullat. 8102591-8 lÜ 15 20 25 PREFERRED EMBODIMENT The invented rotary fuse is exemplified by a rotary fuse for a rotatable object, in this case a roller, on which a belt under tensile stress is wound.

Rullen l är framställd ur en ämnesstang i form av ett rakt, flersidigt prisma, här ett regelbundet, sex-sidigt prisma med plana sidor. En'del av stången är, som framgar av figur l , svarvad till en cylindrisk del 2 , pa vilken bandet skall rullas upp. I den cylindriska delen 2 är en genomgående springa 3 upp- tagen i stangens längsled för fästande av bandet.The roller 1 is made of a blank bar in the form of a straight, multi-sided prism, here a regular, six-sided prism with flat sides. A part of the rod is, as shown in figure 1, turned into a cylindrical part 2, on which the belt is to be rolled up. In the cylindrical part 2, a continuous gap 3 is accommodated in the longitudinal joint of the rod for fastening the strap.

Vid rullens ena ände är en lageryta 4 svarvad med samma diameter som den hos den cylindriska delen 2 . Pa ömse sidor om_ lagerytan 4 är stängens material kvarlämnat för att bilda tva styrflänsar 5 .At one end of the roller, a bearing surface 4 is turned with the same diameter as that of the cylindrical part 2. On either side of the bearing surface 4, the material of the rod is left to form two guide flanges 5.

Rullen l är med lagerytan 4 inlagd i en lagerbock 6 med ett inte närmare beskrivet halvcirkelformat urtag som lagersäte för rullen.The roller 1 is with the bearing surface 4 inserted in a bearing bracket 6 with a semicircular recess not further described as a bearing seat for the roller.

Rullens motsatta ände har kvar ämnesstangens sex-sidiga tvärsnitt och utgör en spärrdel 7 . Spärrdelen är inlagd i en spärrklove 8 med ett urtag sa format att rullen av detta spärras för vridning i en riktning.The opposite end of the roll retains the six-sided cross-section of the blank bar and forms a locking part 7. The locking part is inserted in a locking claw 8 with a recess so shaped that the roller of this is locked for rotation in one direction.

Spärrkloven 8 är, som framgar av figur 2 , utformad med ett urtag 10 med en botten med frigâng för spärrdelen 7 . Urtaget 10 är omgivet av tva väggar. Den ena av väggarna _12 är lag, tillnärmelsevis hälften så hög som en av spärrdelens 7 sidor är bred. Den laga väggen 12 är avslutad med ett rundat parti 13 , som sträcker sig bort fran urtaget lO och omfattar i stort sett en halvcirkel. Den andra av väggarna ll är högre, minst sa hög att den under spärrdelens 7 vridning för palindning av bandet hela tiden star i kontakt med ett av spärrdelens hörn, i exemplet sa hög att en linje 20 frân dess yttersta del till den närmaste punkten pa rundningen 13 bildar en vinkel B på 750 mot den högre väggen ll .As can be seen from Figure 2, the locking hook 8 is formed with a recess 10 with a bottom with clearance for the locking part 7. The recess 10 is surrounded by two walls. One of the walls _12 is straight, approximately half as high as one of the 7 sides of the barrier part is wide. The straight wall 12 is terminated with a rounded portion 13, which extends away from the recess 10 and comprises substantially a semicircle. The other of the walls 11 is higher, at least so high that during the rotation of the barrier part 7 for winding the strip it is constantly in contact with one of the corners of the barrier part, in the example so high that a line 20 from its outermost part to the nearest point on the rounding 13 forms an angle B of 750 towards the higher wall ll.

Den laga väggen 12 har en lutning av i storleksordningen S0 i förhållande till den höga väggen ll ,Iutningen år riktad in mot urtaget 10 . lÜ 15 20 25 8102591-8 Alternativt kan de bada väggarna ll , 12 vara parallella.The low wall 12 has an inclination of the order of magnitude S0 in relation to the high wall 11, the inclination being directed towards the recess 10. lÜ 15 20 25 8102591-8 Alternatively, the bathing walls ll, 12 may be parallel.

Avståndet mellan väggarna ll , 12 är sa avpassat i förhållande till spärr- delens 7 största diameter att spärrdelens vridning för avrullning av bandet är hindrad pa grund av dess motstaende hörns anliggning mot väggarna; i exemplet är avståndet mellan väggarna 9 procent mindre än spärrdelens största dia- meter.The distance between the walls 11, 12 is so adapted in relation to the largest diameter of the locking part 7 that the rotation of the locking part for unrolling the belt is prevented due to the abutment of its opposite corners against the walls; in the example, the distance between the walls is 9 percent smaller than the largest diameter of the barrier part.

Urtagets botten är intill den laga väggen 12 utformad till en upphöjd klack 14 . Klacken är avsedd att utgöra ett stöd för làsdelen 7 , bl a i dess lästa läge.The bottom of the recess is adjacent to the low wall 12 formed into a raised lug 14. The lug is intended to form a support for the locking part 7, among other things in its read position.

Bade spärrkloven B och den tidigare beskrivna lagerbocken 6 är utförda av stalplaz.Both the locking claw B and the previously described bearing bracket 6 are made of stable space.

Bandet 15 är till en del upprullat pa den cylindriska delen 2 av rullen l och star under dragspänning. Rullen med bandet är genom samverkan mellan spärr-delen 7 och spärrkloven 8 last i den i figur 2 visade ställningen med ett hörn av den sex-sidiga spärrdelen stött mot den höga väggens ll övre del, ett diametralt motsatt hörn stött mot den laga väggens lZ nedre del och en av spärrdelens plana sidor stödd mot klacken 14 i urtagets botten.The belt 15 is partly wound on the cylindrical part 2 of the roller 1 and is under tensile stress. The roller with the belt is by interaction between the locking part 7 and the locking hook 8 loaded in the position shown in figure 2 with a corner of the six-sided locking part abutting against the upper part of the high wall 11, a diametrically opposite corner abutting against the low wall 1Z lower part and one of the flat sides of the locking part supported against the lug 14 in the bottom of the recess.

Läsningen pa spärrdelen 7 gör verkan även om bandets 15 vinkel A mot den höga väggen ll tilläts variera, åtminstone om vinkeln varierar inom grän- serna 10o° tm 2eo° .The reading on the locking part 7 has an effect even if the angle A of the belt 15 towards the high wall 11 is allowed to vary, at least if the angle varies within the limits 10o ° tm 2eo °.

Om bandet l5 är eftergivligt anordnat kan det ytterligare rullas upp pa rullen l genom vridning med ett vridverktyg, tex en skiftnyckel, pa den utstickande, sex~sidiga delen a» spärrdelen 7 . Spärrdelens skilda lägen under vridningen visas i figur 3 , där det lästa läget visas med heldragna linjer, läget efter en liten vridning visas med streckade linjer och läget efter fortsatt vridning visas med prickade linj-rr. Ytterligare fortsatt vridning leder till att spärrdelen 7 på nytt faller ned i urtaget i làsläge, som det är visat av de heldragna linjerna. 8102591-8 lÛ 15 Zl] Under vridningen av spärrdelen 7 fran ett läsläge till det nästföljande kommer, som framgår av figur 3 , en av spärrdelens plana sidor att rulla pà rund- ningen 13 vid den låga väggen 12 , varigenom spärrdelen lyfts ut ur ur- taget 1D i spärrkloven 8 . När vridningen fortsätter när till šlut spärrdelens hörn inte längre upp på rundningen, utan glider ned efter rundningen och utefter den låga väggen, så att till slut spärrdelen pà nytt intar ett làsläge likt det tidigare, men med spärrdelen 7 vriden 1/6 varv.If the strap 15 is resiliently arranged, it can be further wound up on the roller 1 by turning with a turning tool, for example a wrench, on the protruding, six-sided part of the locking part 7. The different positions of the locking part during the rotation are shown in Figure 3, where the read position is shown in solid lines, the position after a small rotation is shown in broken lines and the position after further rotation is shown in dotted lines-rr. Further continued rotation causes the locking part 7 to fall back into the recess in the locked position, as shown by the solid lines. During the rotation of the locking part 7 from one reading position to the next, as shown in Figure 3, one of the flat sides of the locking part will roll on the rounding 13 at the low wall 12, whereby the locking part is lifted out of taken 1D in the blocking law 8. When the rotation continues until the end of the locking part no longer up on the rounding, but slides down after the rounding and along the low wall, so that finally the locking part again assumes a locking position like the previous one, but with the locking part 7 turned 1/6 turn.

Vridningen av spärrdelen 7 àskàdliggürs ytterligare av en radie 18 som i spärrdelens tre skilda ställningar är dragen till samma hörn.The rotation of the barrier part 7 is further impaired by a radius 18 which in the three different positions of the barrier part is drawn to the same corner.

Spärrdelens centrum 19 flyttas under vridningen ut ur urtaget lÛ och flyttas till slut tillbaka in i urtaget när spärrdelen intar lasläget.The center 19 of the locking part is moved during the rotation out of the recess lÛ and is finally moved back into the recess when the locking part assumes the welding position.

Under den beskrivna rörelsen hos spärrdelen 7 ligger lagerytan 4 kvar i lagerlocken 6 ; rullen l kommer därigenom att utföra en vickande rörelse.During the described movement of the locking part 7, the bearing surface 4 remains in the bearing caps 6; the roller 1 will thereby perform a rocking motion.

För att denna skall vara möjlig är lagerytan 4 utformad bredare än lager- bocken 6 .In order for this to be possible, the bearing surface 4 is designed wider than the bearing bracket 6.

Det följer av den uppfunna vridsäkringens utformning att det inte är möjligt att genom en vridning på rullen l släppa ut bandet 15 från rullen. En möjlighet att släppa ut bandet är att spärrdelen 7 med ett hammarslag slås ut ur spärrklovens urtag.It follows from the design of the invented anti-rotation device that it is not possible to release the belt 15 from the roller by a rotation of the roller 1. One possibility of releasing the strap is that the locking part 7 is knocked out of the recess of the locking claw with a hammer blow.

Om bandet 15 är använt för ombindning och fasthâllning kan ombindningen lösgöras genom att bandets ände motsatt mot rullen lösgöres. Om detta inte skulle vara möjligt kan försök göras med vridning av' rullen 1 i pàrullnings- riktningen tills bandet brister, och ombindningen därigenom blir lösgjord.If the belt 15 is used for binding and holding, the binding can be loosened by loosening the end of the belt opposite the roll. If this were not possible, attempts can be made to rotate the roller 1 in the winding direction until the strip breaks, and the binding is thereby loosened.

Claims

1. 0 15 2D KI! 8102591-8 PATENT REQUIREMENT 1 Anti-rotation device in the case of a rotatable object, for example in a roller for winding belts, ropes, trees, etc. the belt, etc., and allow rotation in the opposite direction, characterized by a locking part (7) associated with the rotatable object (1) in the form of a straight, multi-sided prism (7), concentric with the rotatable object, and a fixed locking claw (8), in which the locking part (7) is inserted, and which has a recess (10) with a bottom with clearance for the locking part (7) b "for two opposite walls (11, 12), one of which wall (12) is straight and has a height which is approximately half the width of one of the sides of the barrier part (7), and is terminated by a rounded portion (13), extending away from the recess (10), and the other wall (11) is higher and is at least so high that during the rotation of the locking part (7) for winding the belt (15) it is constantly intact with one of the corners of the locking part, and by a distance between the wall yarns (11, 12) so adapted in relation to the largest diameter of the locking part that the rotation of the locking part (7) for unrolling the strip is prevented due to its opposite corner abutment against the walls.

Swivel lock according to Claim 1, characterized in that the sides of the straight, multi-sided prism (7) are flat.

Pivot lock according to claim 2, characterized in that the straight, multi-sided prism (7) is six-sided.

Pivot lock according to claim 1, characterized in that the second, higher wall (11) is at least so high that a line (20) from its outermost part to the nearest point on the rounding (13) forms an angle (B) of 750 against the higher wall (ll), and by a distance between the walls (ll, 12) which is between 6 and 10 percent smaller than the largest diameter of the barrier part (7). Pivot lock according to claim 1, characterized by a raised heel (14) in the bottom of the recess (10) of the locking claw (8) adjacent to the lower of the walls (12) of the recess, intended to support the locking part (7), bl ai dess làsläge. Pivot lock according to claim 4, characterized in that the lower of the recess walls (12) has an inclination of 1 of magnitude 50 relative to the higher wall (11), and that the inclination is directed towards the recess (10). Pivot protection according to claim 4, characterized in that the two walls (11, 12) are parallel.