| 摘要 |
Apparatus for drilling laser guided microbore tunnels has a pair of ganged rams 22 which react against the drilling platform 2 driving the bore head 70 into the drill site. The bore head has a laser target 64 close to the leading wall of the head and a camera 120 which relays the image to a remote operator. The head is steered by a transverse ram 104 and a horizontal rain 106. The latter acts through a linkage 162, 166, 170 which imparts up and down steering to the drill shaft. Considerable compactness is achievable while still admitting a laser beam and generous airstream movement which removes slurry from the drill site along the tunnel. 20134 t-08,C:/Usrs/ harenelDocuments/SPECIFICATIONSdaes_1364cimswpd, 13 co IN CD lqt P, CIII --- ---- co CF) r C) (0 C) C.0 co C/J t oo C/l 0 C/l C) C/l cf) 0) 00 0 CO? C) r C/l C) C) 0) C/j 14- co 0) 11 1 CD 'IT 0 C/l -cco, o w 0 C) M (0 0 c1r) LL (Y) C/l ce) C/, CD? |
