NO161831B

NO161831B - AGRICULTURAL DRUM EQUIPMENT.

Info

Publication number: NO161831B
Application number: NO883358A
Authority: NO
Inventors: Crister Stark
Original assignee: Crister Stark
Priority date: 1986-12-02
Filing date: 1988-07-29
Publication date: 1989-06-26
Also published as: DE337999T1; DE3770829D1; NO883358L; NO883358D0; NO161831C

Description

Oppfinnelsen gjeldet et bæteaggregat for en 1andbrukstromme 1, for elastisk forbindelse av trommelens ramme med en seksjon som omfatter en aksel og t romme Ir inger. The invention concerned a bait unit for a commercial drum 1, for elastic connection of the frame of the drum with a section comprising an axle and drum links.

Slike bæreaggregat et kjente. Det kan henvises til US patentskrift nr. 2.796.712, CH patentskrift nr. 193844, SE uti.skrift nr. 4I0b46, EP patentsøknad nr. 668 LS og DE uti.skrift, nr. 2703038 . De har til formål å tillate en bevegelse i vertikalplanet for en seksjon av trommelen, slik at denne skai kunne tilpasse seg ti 1 ujevnheter i underlaget under drift. Kjente bæreaggregat består av flere deler, som ofte kan ha komplisert fotm ellet et dyre å tilvirke. Slike ulemper unngås gjennom oppfinnelsen, som på en meget enkel og rimelig måte skaper et elastisk bæreaggregat. Dette oppnås mod de trekk som er angitt i patentkravene. Such carrier units are known. Reference can be made to US Patent No. 2,796,712, CH Patent No. 193844, SE Publication No. 4I0b46, EP Patent Application No. 668 LS and DE Publication No. 2703038. Their purpose is to allow a movement in the vertical plane for a section of the drum, so that this skai could adapt to ten 1 irregularities in the substrate during operation. Known carrier units consist of several parts, which can often be complicated or expensive to manufacture. Such disadvantages are avoided through the invention, which creates an elastic carrier assembly in a very simple and affordable way. This is achieved against the features specified in the patent claims.

Oppfinnelsen er nedenfor beskrevet nærmere under henvisning til tegningen, hvor fig. I viser et sideriss av et bæreaggregat i samsvar med oppfinnelsen, mens fig. 2 viser et sideveis perspektiv. The invention is described below in more detail with reference to the drawing, where fig. I shows a side view of a carrier assembly in accordance with the invention, while fig. 2 shows a lateral perspective.

1 figurene betegnet 1 en tingttommel, 2 trommelens ramme og 3 et feste for et ytte hus 4. Med E> betegnes ei indre hylse, som bærer den ytre enden av t rommelseks jons aksel. Med 6 betegnes to elastiske labber av gummi, som forbinder huset 4 med hylsa b slik at hylsa under trommelens arbeide kan bevege seg i det ytre huset 4. På oversida hhv. undersida av labbene 6 finnes det åpninger 7 og 8. På denne måten blir aggregatets stivhet mindre i vertikal retning enn i horisontal. Trommelseksjonen kan derfor følge underlagets ujevnheter uten at det skjer noen særlig bevegelse i kjøreretningen. 1 the figures denote 1 a thing thumb, 2 the frame of the drum and 3 a fastening for an outer housing 4. By E> is denoted an inner sleeve, which carries the outer end of the t rommel sexjon's shaft. 6 denotes two elastic rubber feet, which connect the housing 4 to the sleeve b so that the sleeve can move in the outer housing 4 during the work of the drum. On the upper side or on the underside of the legs 6 there are openings 7 and 8. In this way, the unit's stiffness is less in the vertical direction than in the horizontal direction. The drum section can therefore follow the unevenness of the ground without any particular movement in the direction of travel.

Det har vist seg at det beste resultatet oppnås dersom labbene har en aksiell utstrekning som utgjør 40-50% av husets diameter. It has been shown that the best result is achieved if the lugs have an axial extent that is 40-50% of the housing diameter.

For å redusere støtkreftene ved påkjøring av steiner eller andre ujevnheter, kan det på oversida av hylsa 5 utformes en ås, som etter en viss forskyvning av hylsa b oppover kommer i kontakt med husets 4 innvendige flater. Denne åsen kan med fordel gjøres kilefotmet for å oppnå ei progressiv kraft. In order to reduce the impact forces when hitting stones or other irregularities, a ridge can be formed on the upper side of the sleeve 5, which, after a certain displacement of the sleeve b upwards, comes into contact with the inner surfaces of the housing 4. This ridge can advantageously be made wedge-footed to achieve a progressive force.

Ved å plassere hylsa 5 eksentrisk og under sentrum for net ytre huset 4, kan en la det elastiske materialet danne et tykkere lager mellom hylsa 5 og åsen 9. Dermed oppnås et større elastisk volum mellom hylsa og åsen, slik at større støtenergi kan fanges opp når hylsa 5 slår an mot huset 4. By placing the sleeve 5 eccentrically and below the center of the net outer housing 4, the elastic material can be allowed to form a thicker layer between the sleeve 5 and the ridge 9. This results in a larger elastic volume between the sleeve and the ridge, so that greater impact energy can be captured when the sleeve 5 hits the housing 4.

Ved tromler med flere deler, der de ytre delene svinges opp under transport for å redusere transportbredden, er det fordelaktig at labbene 6 er lange i trommelseksjonens aksielle retning, fordi trommeldelenes totale vekt, som kan gå opp i flere hundre kilo, da bæres utelukkene av bæreaggregatets elastiske partiet 6. In the case of drums with several parts, where the outer parts are swung up during transport to reduce the transport width, it is advantageous that the legs 6 are long in the axial direction of the drum section, because the total weight of the drum parts, which can amount to several hundred kilograms, is then carried by the the carrier unit's elastic part 6.

En fagmann kan utforme et bæreaggregat i samsvar med oppfinnelsen på flere måter innenfor patentkravenes ramme, avhengig av den funksjonen som ønskes. F.eks. kan åpningen 7 utformes med V-form med spissen rettet nedover. En oppnår da et mer elastisk materiale for opptak av støt og samtidig kan en utelate åsen 9. Andre modifikasjoner er også mulige. A person skilled in the art can design a carrier assembly in accordance with the invention in several ways within the scope of the patent claims, depending on the desired function. For example the opening 7 can be designed with a V-shape with the tip pointing downwards. A more elastic material is then obtained for absorbing shocks and at the same time the ridge 9 can be omitted. Other modifications are also possible.

Claims

1. Bearing unit for an agricultural drum, for elastic connection of the drum's frame with a ring section comprising an axle and drum rings, characterized by- an axially extending, outer housing (4), which is connected to the drum's (1) frame (2) by means of of a fastener (3), - an inner sleeve (5) which extends in the axial direction and carries the shaft end of the ring section, - a pair of horizontal tabs (6) of elastic material, for example rubber, which are arranged axially on different sides of the inner e sleeve (5) and which connects the outer housing (4) with the inner sleeve, as well as - through openings (7,8) designed at the top and bottom of the inner sleeve (5), to lower the stiffness in the vertical direction and thus allow the sleeve (5) to move more easily in this direction, so that the ring section is well adapted to unevenness in the substrate.

2. Aggregate in accordance with patent claim 1, characterized in that the tabs (6) extend axially along the entire length of the outer housing (4) and the inner sleeve (S).

3. Aggregate in accordance with patent claim 1 or 2, characterized in that the inner surface of the outer housing (4) and the outer surface of the inner sleeve (5) both have a circular cylindrical shape.

4. Aggregate in accordance with one of the patent claims 1-3, characterized in that the center of the inner sleeve (5) is eccentrically shifted downwards in relation to the center of the outer housing (4) and that the upper edge of the elastic tabs (6) is spaced over the sleeve (5).

5. Aggregate in accordance with patent claim 1, characterized in that on the paws above it the inner sleeve (5) is designed as a ridge (9) which is directed upwards, towards the inside of the outer housing (4) and which is made of elastic material.

6. Aggregate in accordance with patent claim 5, characterized in that the ridge (9) is tapered towards the inner surface of the outer housing.

7. Aggregate in accordance with patent claim 6, characterized in that the ridge (9) is wedge-shaped.

8. Aggregate in accordance with patent claim 1, characterized in that the length of the aggregate is smaller than the diameter of the outer housing.

9. Aggregate in accordance with patent claim 8, characterized in that the length of the aggregate is between 40% and b0% of the diameter of the outer housing.