SE123713C1

SE123713C1 -

Info

Publication number: SE123713C1
Authority: SE
Publication date: 1948-01-01

Description

KLASS 21 c:14'11 BESKRIVNING OFFENTLIGGJORD AV KUNGL. PATENT- OCH REGISTRERINGSVERKET BEVILJAT DEN 4 NOVEMBER 1948 PATENTTID FRAN DEN 14 OKT. 1946 PUBLICERAT DEN 4 JANUAR! 1949 Ans. den Vo 1946, nr 8932/1946. Hartil1 en ritning. CLASS 21 c: 14'11 DESCRIPTION PUBLISHED BY KUNGL. THE PATENT AND REGISTRATION AUTHORITY GRANTED ON 4 NOVEMBER 1948 PATENT PERIOD FROM 14 OCTOBER. 1946 PUBLISHED ON JANUARY 4! 1949 Ans. den Vo 1946, No. 8932/1946. Hartil1 a drawing.

C. H. LUNDEQVIST, LINKOPING. C. H. LUNDEQVIST, LINKOPING.

Expansionsfasto for isolatorpinnar. Expansion fastener for insulator pins.

Det vanligaste sattet for fastsattning av isolator pa isolatorpinne dr for narvarande fastsattning genom drevning eller direkt fastgjutning av isolatorpinnen i isolatorporslinet. mom stallyerksutrustningar dar isolatorerna anvandas som stOd samt i apparatkonstruktioner, efterstravas god centrering av porslinet pa pinnen och anordning for snabbt isolator-byte. Drevningen medfOr emellertid dalig centrering och ringa motstand mot vridning och fastgjutningen stor reservhallning eller omgjutning, vilket kraver tid och speciell kunskap om gjutningen. Fastgjutningen medlar dessutom ofta, att porslinet sonderspranges pa grund av de olika materialens specifika utvidgningskoeffcienter. The most common method of attaching an insulator to an insulator pin is for the present attachment by driving or direct casting of the insulator pin in the insulator porcelain. In addition to stable equipment where the insulators are used as supports and in device constructions, good centering of the porcelain on the pin and device for rapid insulator replacement is sought. However, the drive entails poor centering and little resistance to twisting and casting, large spare inclination or recasting, which requires time and special knowledge of the casting. The casting also often means that the porcelain shatters due to the specific expansion coefficients of the different materials.

F5religgande uppfinning avser en anordfling, varmed en pet lampligt salt utformad insats anbringas i porslinet, pa vilken isolatorpinnar o. d. av onskat utforande kunna pamonteras. The present invention relates to a device flap, by means of which an insert suitably salted is applied to the porcelain, on which insulator pins or the like of the desired design can be mounted.

Tanken vid konstruktionens uppbyggnad liar varit att alstra ett mekaniskt kopplingselement mellan isolatorporslin och pinne, vilket kopplingselement skall vara billigt i utf8- rande och som skall fylla behovet mom omradet, vartill det ar avsett. The idea in the construction of the structure was to produce a mechanical coupling element between the insulator porcelain and the pin, which coupling element should be inexpensive in design and which should fill the need for the area for which it is intended.

Uppfinningen bestdr i huNudsak av en i nedre anden gangad tryckskruv och en kring tryckskruven omslutande och i Owe anden fastsatt och i nedre anden mot en ansats styrd spiralfjader, vilken liar en lindningsstigning, som noga overensstammer med gangstigningen i isolatorhalet och en ytterdiameter, som i fritt tillstand nagot overskrider isolatorhalets diameter. Spiralfj dderns ovre ande Ar medelst ett eller flera lindningsvarv centrerad pa den I flera hopkopplingsbara delar utforda, med en isolatorpinne hopbyggda eller med ett skarvstycke for sedda tryckskruven. Spiralfjaderns nedre ande ar med ett eller flera Hadningsvarv centrerad och frigaende anbringad mot en ansats pa tryckskruven, vilken dude ar anbringad Indian en stoppbricka och en expanderande packning paverkad av en mutter Over en bricka med tillh8rande lasbricka, varigenom, sedan tryckskruven med spiralfjadern ingangats 1 fasthalet, yid iddragning ay muttern spiralfjadern fastlases och tryckskruven centreras och elastiskt fastspannes fasthalet. The invention consists essentially of a pressure screw threaded in the lower spirit and a helical spring enclosing around the pressure screw and fixed in the lower spirit against a shoulder, which has a winding pitch which closely corresponds to the pitch of the insulator tail and an outer diameter which condition slightly exceeds the diameter of the insulator tail. The upper end of the coil spring is by means of one or more winding turns centered on the challenge in several connectable parts, assembled with an insulator pin or with a joint piece for the set screw. The lower end of the coil spring is centered with one or more hatching turns and loosely mounted against a shoulder on the pressure screw, which dude is fitted with a stop washer and an expanding gasket actuated by a nut over a washer with associated load washer, whereby. , yid tightening ay the nut the coil spring is fastened and the pressure screw is centered and elastically clamped on the hold.

En utforingsform ay uppfinningen skall harnedan i anslutning till ritningen narmare beskrivas. En isolator och en del av en iso.: latorpinne ar inritad med punktstreckade linjer for konstruktionens askadliggorande men tillhor ej uppfinningen. An embodiment of the invention will be described in more detail below in connection with the drawing. An insulator and a part of an insulator stick are drawn with dotted lines for the ash-like construction of the structure but do not belong to the invention.

En tryckskruv 1 är i nedre anden gangad mot en ansats 11 och i ovre anden utford med ett huNud, vars overyta noga overensstammer med urskalningen 9 i isolatorhalets botten och mars sidor endast lamna rum far en mjuk packning 8 ay asfaltpapp e. d. I huvudet är borrat ett hal 12 for fastnitning av fjadern 2. Fjadern 2 ir utford med en stigning motsvarande gangstigningen i isolatorhalet och i ovrigt sa att den med jamnt tryck noga ansluter sig till isolatorhetlets vaggyta 10, nar fjadern Ar placerad mot botten 9 i isolatorhalet. Fjaderns Owe ande dr med ett eller flera lindningsvarv centrerad intill tryckskruvens huvud och fjaderns nedre del ar med ett lindningsvarv centrerad under ansatsen 11 pa tryckskruven. Over tryckskruven 1 och mellan ansatsen 11 och innersidan pa nedre fastet av fjadern 2 dr patradd en stoppbricka 3. Over tryckskruven 1 och mot utsidan ay nedre fastet for fjadern 2 ar patradd en elastisk packning 4 av tjocka asfaltpappbriekor, blyklatt gummi e. d. Over tryckskruvens nedre del ar mot packningen 4 patradd en bricka 5 och mot denna bricka en fjader- eller lasbricka 6. PA tryckskruvens gangade del ar pa.- skruvad en lang mutter 7, medelst vilken den expanderande delen ay expansionsfastet fast-lases i isolatorn, varjamte muttern utgor haste for isolatorpinne, isolatorkrok e. d. A pressure screw 1 is in the lower spirit threaded against a shoulder 11 and in the upper spirit challenged with a huNud, the upper surface of which closely corresponds to the peeling 9 in the bottom of the insulator tail and March sides only left rooms get a soft gasket 8 ay asphalt cardboard ed. hall 12 for riveting the spring 2. The spring 2 is challenged with a pitch corresponding to the pitch of the insulator tail and otherwise so that it evenly adheres with even pressure to the cradle surface 10 of the insulator heater when the spring Ar is placed against the bottom 9 of the insulator tail. The spring end of the spring has one or more winding turns centered next to the head of the pressure screw and the lower part of the spring has a winding turn centered under the shoulder 11 on the pressure screw. A stop washer 3 is pushed over the pressure screw 1 and between the shoulder 11 and the inside of the lower fastening of the spring 2, above the pressure screw 1 and towards the outside of the lower fastening of the spring 2 is an elastic gasket 4 of thick asphalt cardboard bricks, leaded rubber etc. a washer 5 is threaded against the gasket 4 and a spring or load washer 6 is attached to this washer. On the threaded part of the pressure screw a long nut 7 is screwed on, by means of which the expanding part of the expansion fastener is fixed in the insulator, and the nut is urgent. for insulator pin, insulator hook ed

Vid montering am expansionsfastet lossas muttern 7 sa. att fjadern 2 och brickorna 3, 5 och 6 samt packningen 4 aro frigaende och lOsa mid ansatsen 11 pa tryckskruven 1. I mutterns fria dnda inskruvas en isolatorpinne eller annan lamplig skruv (tillhor ej uppfinningen) till sadan langd, att tryckskruven 1 och den mot andra anden av muttern ingangade skruven lasa varandra. Pa tryckskruvens 2— — huvud patrades den mjuka packningen 8, varefter expansionsfastet nedsattes i isolatorhalet och inskruvas till isolatorhalets botten med hjalp av den pa muttern provisoriskt pasatta skruven, varvid fjadern 2, som utgor ganga pa expansionsfastet, hela tiden spanner mot isolatorhalets vaggyta 10 med ett jamnt tryck och med hopdragande verkan i viss relation till friktionsmomentet mellan fjader och isolatorkropp. Expansionsfastet nedskruvas sa. langt att fjaderns lindningsvarv n5rmast huhuvudet pa tryckskruven 1 i det narmaste hoptryckes, varvid tryckskruvens huvud spanner mot isolatorhalets batten. Den i muttern 7 provisoriskt ingangade skruven frigores harefter genom vridning i motsatt riktning, i v11- ket fall fjadern 2 fasthaller tryckskruven 1 i isolatorhalet genom fjaderns utsparrande verkan narmast huvudet pa tryckskruven. Slutligen atdrages muttern 7, varvid nedre delen pa fjadern 2 stravar att spa.nna ut sig samtidigt som packningen 4 utpressas mot isolatorhalets vaggar. Expansionsfastet sitter nu centrerande fastspant i isolatorhalet och kan ej vridas At nagondera hailet genom fjaderns lasande verkan. PA grand av den relativt mjuka och jamna tryckfordelningen mellan fastet och isolatorhalets vaggyta aventyras ej isolatorporslinets hallfasthetsegenskaper. Isolatorn kan med expansionsfastet monteras pa ett flertal satt t. ex. med isolatorpinnen staende, hangande eller lutande. Fastet kan med lamp-list verktyg uttagas ur isolatorkroppen och anvandas flera ganger, varigenom reservhallningen Inom stallverk o. d. dar ifragavarande materialslag kommer till anvandning kan begransas till enbart isolatorporslinen, som aro jamf8relsevis billiga i anskaffning. When mounting on the expansion bracket, loosen the nut 7 sa. that the spring 2 and the washers 3, 5 and 6 as well as the gasket 4 are free and loosen with the shoulder 11 on the pressure screw 1. An insulator pin or other suitable screw (does not belong to the invention) is screwed into the free end of the nut to such a length that the pressure screw 1 and the other spirit of the nut entered screw screw each other. On the head of the pressure screw 2 - - the soft gasket 8 was patterned, after which the expansion bracket was lowered into the insulator tail and screwed to the bottom of the insulator tail by means of the screw provisionally fitted on the nut, the spring 2, which extends on the expansion bracket an even pressure and with a contractile effect in some relation to the frictional moment between the spring and the insulator body. The expansion bracket is screwed down so. far so that the winding turn of the spring closest to the head of the pressure screw 1 is almost compressed, the head of the pressure screw spanning against the bottom of the insulator tail. The screw provisionally inserted in the nut 7 is then released by turning in the opposite direction, in which case the spring 2 holds the pressure screw 1 in the insulator tail by the receding action of the spring closest to the head of the pressure screw. Finally, the nut 7 is tightened, the lower part of the spring 2 trying to stretch out at the same time as the gasket 4 is pressed against the cradles of the insulator tail. The expansion bracket is now centered on the strut in the insulator tail and cannot be turned to penetrate the hail due to the lasing action of the spring. Due to the relatively soft and even pressure distribution between the fastener and the cradle surface of the insulator tail, the insulating porcelain properties of the insulator porcelain are not compromised. The insulator can be mounted with the expansion bracket in a number of ways, e.g. with the insulator stick standing, hanging or leaning. The lamp can be removed from the insulator body with lamp-strip tools and used several times, whereby the reserve hall In stables, etc. where the material type in question is used can be limited to only the insulator porcelain, which is relatively cheap to procure.

Uppfinningen ar icke begransad enbart till den i samband med ritningen beskrivna ut foringsformen utan Avon andra utforingsf ormer kunna tankas. The invention is not limited only to the embodiment described in connection with the drawing, but Avon other embodiments can be considered.

Tryckskruv 1 och isolatorpinne eller annat fastjarn kunna t. ex. vara utfOrda i en enhet. Pressure screw 1 and insulator pin or other fixed iron can e.g. be performed in one unit.

Tryckskruven 1 kan t. ex. utforas i flera hopkopplingshara delar. The pressure screw 1 can e.g. performed in several interconnecting hard parts.

Uppfinningen ar joke begransad enbart till anvandning vid isolatorer, utan kan givetvis anvandas aven mom andra omraden, dar likartat behov foreligger. The invention is joke limited only to use with insulators, but can of course also be used in other areas, where similar needs exist.

Claims

1. Claim claim: Expansion fastener, preferably for attaching insulators with threaded fasteners to insulator pins and the like, consisting of a helical screw threaded in the lower second and a helical spring arranged around it and attached to its upper end, which has a winding pitch which closely follows the step in the insulator tail and an outer diameter which in free condition slightly exceeds the diameter of the insulator tail, characterized in that the upper end of the coil spring (2) is centered by one or more winding turns on the one in several interconnectable parts, with an insulator pin assembled or with a joint the pressure screw (1), wherein the lower end of the coil spring with one or more winding turns is centered and releasably mounted against a shoulder (11) on the pressure screw, next to which a stop washer (3) and an expanding gasket (4) are actuated by a nut (7) Over a washer (5) with associated IA.s washer (6), whereby, then the pressure screw with spiral spring5.dern entered into the hold, upon tightening ay nut. the coil spring is fastened and the pressure screw is centered and elastically clamped in the fastener. Stockholm 1948. Kungl. Boktr. P. A. Norstedt & Saner 4800