초록 ▼

The object of the invention is to provide a drilling device which is compact and has good sliding properties. The object is achieved by an upper beam for use with a lower beam in a telescopic feeder for a drilling device for rock drilling. The upper beam extends along a longitudinal axis and has a g

The object of the invention is to provide a drilling device which is compact and has good sliding properties. The object is achieved by an upper beam for use with a lower beam in a telescopic feeder for a drilling device for rock drilling. The upper beam extends along a longitudinal axis and has a generally U-shaped cross section comprising a bottom wall and a first and a second side wall. Each side wall has an inward surface and an outward surface. The upper beam comprises a cooperating member intended for sliding cooperation with the lower beam. The cooperating member comprises an attachment structure extending outwardly from each outward surface of each side wall. Each attachment structure is intended for fixed mounting of a crank block bracket, which crank block bracket faces the outward surface of each side wall.

대표청구항 ▼

The invention claimed is: 1. Upper beam intended to be used with a lower beam in a telescopic feeder for a drilling machine in rock drilling, said upper beam extending along a longitudinal axis and having a substantially U-shaped cross section comprising a bottom wall and a first and a second side w

The invention claimed is: 1. Upper beam intended to be used with a lower beam in a telescopic feeder for a drilling machine in rock drilling, said upper beam extending along a longitudinal axis and having a substantially U-shaped cross section comprising a bottom wall and a first and a second side wall, each side wall having an inward surface and an outward surface, and said upper beam comprises a cooperating member for sliding cooperation with the lower beam wherein said cooperating member comprises an attachment means extending outwardly from each outward surface of each side wall and that each attachment means is mounted to a crank block bracket which faces said outward surface of each side wall.