SE128449C1 - - Google Patents

Description

Uppfinnare: V. Sy/wk. Inventor: V. Sy / wk.

Hus till rullningslager maste i regel gorses med lampliga tatningsanordningar mellan huset och en darifran utskjutande och relativt huset rorlig axel for att hindra fororeningar frau att tranga in i lagret och smorjmedlet frail att lacka ur lagerhuset. En mycket effektiv och darfor of La anvand tatningsanordfling ar labyrinttatningen, soin bestar, exernpelvis av en pa. en roterande axel monterad ring med ett antal ringformiga radiellt utskjutande kammar, som ingripa i pa rnotsvarande salt anordnade ringformiga kammar i lagerhusets axeloppning. Da kali-marna icke kunna foras axiellt f8rbi varandra maste antingen lagerhuset eller ett darpa monterat lock, i vilket kanamarna aro anordnade, utforas delat for att hopsattning shall kunna aga rum. Housing for rolling bearings must usually be gors with suitable sealing devices between the housing and a shaft projecting therefrom and relative to the housing movable to prevent contaminants from penetrating into the bearing and the lubricant frail to paint out of the bearing housing. A very effective and therefore of La use sealing device is the labyrinth seal, which consists, for example, of a pa. a rotating shaft mounted ring with a number of annular radially projecting cams, which engage in annular cams arranged in corresponding salt in the shaft opening of the bearing housing. Since the calipers cannot be moved axially past each other, either the bearing housing or a lid mounted lid, in which the canams are arranged, must be made divided so that assembly can take place.

Vid den sis.inamnda konstruktionen bear-betas delningsytorna pa lockets bagge delar noggrant fOr att fogen skall bli tat. Delarna ha hittills vanligen skruvats samman medelst vinkelrat snot skarvarna anordnade skruvar, varvid darjamte ett par styrpinnar varit i regel nodvandiga for att styra de hada halvorna relativt varandra. Sedan locket ph detta satt blivit hopsatt kring det inre labyrintorganet fastskruvas det vid huset. In the above-mentioned construction, the dividing surfaces of the lid parts of the lid are carefully machined so that the joint is taken. The parts have hitherto usually been screwed together by means of screws arranged at an angle to the snot joints, whereby a pair of guide pins have generally been necessary to guide the had halves relative to each other. After the lid ph this set has been assembled around the inner labyrinth member, it is screwed to the housing.

Nar det Or fraga om ett stort natal hus av samma sort exempelvis axelboxar blir kostnaden for den ovan beskrivna anordningen star och isartagande och hopsattningen av dessa lock 1. ex. for rengoring kraver avseYard Lid. When it comes to a large natal housing of the same type, for example shaft boxes, the cost of the device described above becomes rigid and disassembly and assembly of these lids 1. ex. for cleaning requirements avseYard Lid.

FOreliggande uppfinning lsar till andantal att astadkomma en sammanhindningsanordning for lockhalvorna som effektivt sammanpressar halvorna men som samtidigt blir billig i tillverkning och som kan snabbt sattas ihop eller tagas isar och ka.nnetecknas i huvudsak darav, att lockdelarna sammanhallas medelst fjaderanordningar, vilka trycka delarna mot varandra. The present invention relates to a number of means of providing a cohesive device for the lid halves which effectively compresses the halves but which at the same time becomes cheap to manufacture and which can be quickly assembled or taken into ice and is characterized mainly by the lid parts being held together by spring devices which press the parts against each other. .

En utforingsform av uppfinningen visas pa bifogade ritning, dar fig. 1 visar en axiell sektion genom ett lagerhus, fig. 2 Sr en plan vy av det yttre tatningsorganet och fig. 3 visar ett fjaderorgan dels i ospant och dels i spant lage. An embodiment of the invention is shown in the accompanying drawing, in which Fig. 1 shows an axial section through a bearing housing, Fig. 2 is a plan view of the outer sealing member and Fig. 3 shows a spring member partly in a frame and partly in a frame bearing.

Vid den visade utforingsformen Sr 1 en axel ph vilken Or monterad ett rullager 2, som Sr anbragt i ett lagerhus 3. Lagret fasthalles pa axeln mellan en pa axeln gangad mutter 4 och ett inre tatningsorgan 5, som anligger mot en skuldra 6 pa axeln. Tatningsorganet 5 Or forsett med ett antal utskjutande ringformiga kammar 7, vilka bilda en labyrint tillsammans med et-It antal inatriktade kammar 8 pa ett pa axelboxen fastskruvat lock 9. For att fa kammarna att ingripa mellan varandra maste locket tydligen vara delat. fig. 2 visas en planvy sedd inifran av locket 9, som Or delat vid tva stallen 10. Pa vardera sidan om vane delningsstalle Or locket forsett med urtag 11, som lampligen utformas yid gjutningen av locket men vans ytor 12 bearbetas parallella med varandra och till det Onskade avstandet fran varandra. I den centrerande delen 13 av locket Sr insvarvat ett spar 14, i vilket fjaderorganet inlagges. S5som framgar av fig. 3 har fjaderorganet formen av en bojd bladfjader, vars andar 16 ombojts till att bilda hakar. Fjadern Sr frail borjan starkare bOjd, sasom de prickade linjerna i figuren visa, an sedan den anbragts pa sin plats, da den antar den form som visas heldragen i fig. 3. Bajningen Sr emellertid avpassad sa i forhallande till fjaderns langd och avstandet mellan planen 12, att nar den anbragts pa sin plats, dess bojning motsvarar sphrets kr5kning, sit att fjadern kommer att ligga helt nedsankt i sparet sasom fig. 2 visar. In the embodiment shown Sr 1 a shaft ph which Or is mounted a roller bearing 2, which Sr is arranged in a bearing housing 3. The bearing is held on the shaft between a nut 4 threaded on the shaft and an inner sealing member 5, which abuts against a shoulder 6 on the shaft. The sealing member 5 is provided with a number of projecting annular cams 7, which form a labyrinth together with a number of aligned cams 8 on a lid 9 screwed onto the shaft box. In order to make the cams engage between each other, the lid must obviously be divided. Fig. 2 shows a plan view seen from the inside of the lid 9, which Or is divided at two stalls 10. On each side of the usual dividing stall Or the lid is provided with recesses 11, which are suitably formed by the casting of the lid but whose surfaces 12 are processed parallel to each other and to the desired distance from each other. In the centering part 13 of the lid Sr a groove 14 is turned, in which the spring member is inserted. As can be seen from Fig. 3, the spring means has the shape of a bent leaf spring, the spirits 16 of which are bent to form hooks. The spring Sr frail initially stronger bend, as the dotted lines in the figure show, than after it has been placed in place, as it assumes the shape shown in full in Fig. 3. However, the bending Sr is adapted so in relation to the length of the spring and the distance between the planes 12, that when it is placed in place, its bending corresponds to the curvature of the spring, that the spring will be completely immersed in the groove as shown in FIG.

Vid hopsattning av lockhalvorna kring det inre organet 5 laggas de hada halvorna intill varandra och fjadrarna tryckas pa, varvid hakarna 16 gripa Over ytorna 12. Harvid spannas fjadrarna och utova en kraft vinkelrat mot skarvfogen, vilken yid en lamplig dimensionering av fjadrarna Or tillracklig for att astadkomma en tat skarv. Harpa fastskruvas locket pa axelboxen pa vanligt satt rnedelst skruvar 17. Eftersom sparet 14, i vilket fja- 2— — dern ligger Sr belaget i lockets centrerande del, som befinner sig inuti lagerhuset Sr fjadern helt innesluten och salunda sakras ett tillforlitligt satt fran att falla ur. When assembling the lid halves around the inner member 5, the had halves are laid next to each other and the springs are pressed on, the hooks 16 gripping over the surfaces 12. The springs are tensioned and exert a force perpendicular to the joint, which is sufficient to dimension the springs. achieve a tat joint. The harp is screwed to the cover on the shaft box in the usual way with screws 17. Since the groove 14, in which the spring is located in the centering part of the lid, which is located inside the bearing housing, the spring is completely enclosed and thus a reliable way of falling is ensured. from.

Nar lagret skall demonteras eller labyrinten rengliras lossas skruvarna, som halla locket, Varefter lagerhuset drages ax, varvid fjadrarna bli atkomliga och kunna avlagsnas med hjalp av ett lampligt enkelt verktyg. tippfinningen kan modifieras titan att dess princip darvid frangh.s. Salunda kan man t. ex. anviinda fjlidrar av annan utforingsform. Vidare behova givetvis ytorna 12 icke nodvandigtvis vara parallella utan kunna de exempelvis yam nagot snedstallda i forhallande till delningsytorna, varvid fjddrarna sakrare las pa sina platser under den tid innan locket anbragts pa sin plats. When the bearing is to be dismantled or the labyrinth is cleaned, the screws, which hold the lid, are loosened. After which the bearing housing is tightened, whereby the springs become accessible and can be removed with the aid of a suitable simple tool. the tipping invention can be modified titanium to its principle thereby frangh.s. Salunda can be e.g. used springs of another embodiment. Furthermore, of course, the surfaces 12 do not necessarily have to be parallel, but can, for example, be somewhat inclined in relation to the dividing surfaces, whereby the springs are more securely read in place during the time before the cover is fitted in place.

Claims (4)

Patentansprak:Patent claim: 1. Anordning vid tatningsorgan for lagerhus och dylikt med en ur lagerhuset utskju tande axel (1) och med en labyrinttatning (7, 8) for tatning av spalten mellan axeln °ch. huset (3), som bildas av relativt varandra rorliga organ (5, 9), anordnade det ena utanfor det andra, kannetecknad darav, att det yttre organet (9) Sr delat i axelriktningen och att delarna sammanhallas medelst fjaderanordningar (15), vilka trycka delarna mot varandra.Device for sealing means for bearing housing and the like with a shaft (1) projecting from the bearing housing and with a labyrinth seal (7, 8) for sealing the gap between the shaft ° and. the housing (3), which is formed by relatively movable members (5, 9), arranged one outside the other, characterized in that the outer member (9) is divided in the axial direction and that the parts are held together by means of spring devices (15), which press the parts against each other. 2. Anordning enligt patentanspraket 1, kannetecknad darav, att fjaderanordningarna besta av bagformigt bojda bladfjadrar (15), vars andar (16) aro ombojda till att bilda hakar, vilka ingripa i urtag (11) belagna pa var sin sida om det yttre organets delningsfogar (10).Device according to claim 1, characterized in that the spring devices consist of bag-shaped leaf springs (15), the spirits (16) of which are bent to form hooks, which engage in recesses (11) coated on each side of the dividing joints of the outer member. (10). 3. Anordning enligt patentanspraket 1 eller 2, kannetecknad darav, att fjadern (15) Sr anbragt i ett periferiellt lopande spar (14) i det yttre organet (9).Device according to claim 1 or 2, characterized in that the spring (15) is arranged in a circumferentially extending groove (14) in the outer member (9). 4. Anordning enligt patentanspraket 3, kannetecknad darav, att det periferiella sparet (14) Sr belaget -vid en del (13) av det yttre organet (9) som Sr anordnad att inforas i och tackas av lagerhuset (3).Device according to claim 3, characterized in that the peripheral groove (14) is located at a part (13) of the outer member (9) which is arranged to be inserted into and thanked by the bearing housing (3).