(12) Oversettelse av europeisk patentskrift

Transkript

1 (12) Oversettelse av europeisk patentskrift (11) NO/EP B1 (19) NO NORGE (51) Int Cl. Patentstyret E01B 1/00 ( ) E01B 27/14 ( ) (21) Oversettelse publisert (80) Dato for Den Europeiske Patentmyndighets publisering av det meddelte patentet (86) Europeisk søknadsnr (86) Europeisk innleveringsdag (87) Den europeiske søknadens Publiseringsdato (30) Prioritet , DE, U (84) Utpekte stater AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (73) Innehaver Robel Bahnbaumaschinen GmbH, Industriestrasse 31, Freilassing, DE- Tyskland (72) Oppfinner WIDLROITHER, Otto, Petersweg 22, Freilassing, DE-Tyskland (74) Fullmektig Tandbergs Patentkontor AS, Postboks 1570 Vika, 0118 OSLO, Norge (54) Benevnelse HAND-HELD TAMPER FOR UNDERFILLING BALLAST OF A TRACK (56) Anførte publikasjoner AT-B DE-B

2 EP [001] The invention relates to a hand tamper for tamping ballast of a track, including a drive motor for rotation of an imbalance, and a tamping blade fastened to a lower end of a shaft which is connected to the drive motor and has a longitudinal axis. [002] A hand tamper of this type is already known, for example, from AT In this, the shaft is designed as an axle tube, in the lower end of which the imbalance is provided. The tamping blade is designed in the shape of a slightly curved plane. [003] It is the object of the present invention to create a hand tamper of the kind mentioned at the beginning with which it is possible to attain an improved compaction effect. [004] According to the invention, this object is achieved with a hand tamper of the specified type by way of the features cited in claim 1. [005] With such a design of the tamping blade, the lower section thereof extends approximately in the direction of immersion of the hand tamper into the ballast. The upper section of the tamping blade subsequently causes an additional ballast compaction. Due to the angled arrangement of the two blade halves with respect to one another, a lateral slipping away of ballast can be reduced. [006] Additional advantages of the invention become apparent from the dependent claims and the drawing description.

3 2 [007] The invention will be described in more detail below with reference to embodiments represented in the drawing in which Fig. 1 is a view of a hand tamper, Figs. 2 to 5 are various enlarged views of a tamping blade, and Fig. 6 is a further variant of a tamping blade. [008] A hand tamper 1 shown in Fig. 1 has a drive motor 2 which is connected to hand grips 3 and to a shaft 4 having a longitudinal axis 7. A tamping blade 6 is provided at a lower end 5, spaced from the drive motor 2, of the shaft 4. A spindle 9 rotatable about the longitudinal axis 7 by means of the drive motor 2 is mounted inside the shaft 4. At the lower end 8 spaced from the drive motor 2, said spindle 9 has an imbalance 10 for producing tamping vibrations. [009] As can be seen in Figs. 2 to 5, the tamping blade 6 consists of two blade halves 11, each connected to the shaft 4. Each of these two blade halves 11 has an upper blade part 12, positioned closer to the drive motor 2 and extending parallel to the longitudinal axis 7, and a lower blade part 13. The two blade parts 12, 13 enclose an angle α of <180 0, preferably The angle α may vary over a range from about to about 180 0, depending on the configuration of the hand tamper. [010] Both blade halves 11 are arranged at an angle β <180 0, preferably 120 0, with regard to one another, when seen in the direction of the longitudinal axis 7 of the shaft 4 (see Fig. 4). The angle β may vary over a range from

4 3 about to about 170 0, depending on the configuration of the hand tamper 1. In Fig. 4, the tamping direction is indicated by an arrow 14. [011] In the variant of the invention visible in Fig. 6, only the two upper blade parts 12 are connected to the shaft 4. The lower blade parts 13 are welded both to one another as well as to the adjoining upper blade part 12. This variant is suited above all for a hand tamper whose imbalance is positioned in the region of the drive motor.

5 1 Patentkrav EP Håndstamper for å stampe ballast til et spor, inkludert en drivmotor (2) for rotasjon av en ubalanse (10), og et stampeblad (6) som er festet til en nedre ende av en aksel (4) som er koplet til drivmotoren (2) og har en langsgående akse (7), karakterisert ved følgende trekk: a) stampebladet (6) bestående av to bladhalvdeler (11), som hver er forbundet med akselen (4), b) hvor hver bladhalvdel (11) har en øvre blad-del (12), som er posisjonert nærmere drivmotoren (2), og en nedre blad-del (13) som er posisjonert i en vinkel α <180 med hensyn til førnevnte, c) hvor begge bladdelene (11) er posisjonert i en vinkel β <180 med hensyn til hverandre, sett i retning av den langsgående akse (7) til akselen (4). 2. Håndstamper ifølge krav 1, karakterisert ved at vinkelen α er mellom 100 og 180, fortrinnsvis Håndstamper ifølge krav 1, karakterisert ved at vinkelen β er mellom 110 og 170, fortrinnsvis 120.

6 1 NO/EP

7 2 NO/EP