US 11,053,744 B2
Feed beam and method of manufacturing the same
Kimmo Eronen, Pirkkala (FI); Anssi Hyvarinen, Tampere (FI); Paul Brown, Helsinki (FI); Stephen Connelly, Tampere (FI); Risto Kallinen, Nokia (FI); Sirpa Launis, Tampere (FI); Juha Piipponen, Tampere (FI); Esa Rantala, Tampere (FI); and Teemu Majander, Tampere (FI)
Assigned to Sandvik Mining and Construction Oy, Tampere (FI)
Filed by SANDVIK MINING AND CONSTRUCTION OY, Tampere (FI)
Filed on Dec. 17, 2018, as Appl. No. 16/222,648.
Claims priority of application No. 17208050 (EP), filed on Dec. 18, 2017.
Prior Publication US 2019/0186206 A1, Jun. 20, 2019
Int. Cl. E21B 15/00 (2006.01); E21B 7/02 (2006.01); B32B 1/08 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 5/18 (2006.01); B32B 27/40 (2006.01)
CPC E21B 15/00 (2013.01) [B32B 1/08 (2013.01); B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/40 (2013.01); E21B 7/025 (2013.01); B32B 2262/106 (2013.01); B32B 2266/0278 (2013.01); B32B 2307/56 (2013.01); B32B 2597/00 (2013.01)] 8 Claims
OG exemplary drawing
 
8. A rock drilling unit, comprising:
a feed beam;
a rock drilling machine supported on the feed beam; and
a feed device arranged for moving the drilling machine longitudinally on the feed beam, the feed beam including at least one multilayered longitudinal section, wherein a cross-section of the multilayered longitudinal section is a two-layer composite structure having an inner layer component and an outer layer component, whereby the outer layer component and the inner layer component are superimposed and made of two different composite materials both including reinforcing fibers and a matrix material, and wherein the outer layer component is mounted in a removable manner on the inner layer component to thereby be a changeable component.