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    • 29. 发明专利
    • DEVICE AND METHOD FOR ASSEMBLING SEGMENT AUTOMATICALLY
    • JPH0860995A
    • 1996-03-05
    • JP20110194
    • 1994-08-25
    • HITACHI CONSTRUCTION MACHINERY
    • KAMEI TAKESHIHIRASAWA YUKIHISAMORI YASUOOZAWA HAJIME
    • E21D11/40
    • PURPOSE: To achieve automatic positioning for automated assembly by providing a storage means for storing the amount of manual correction when a segment is temporarily assembled automatically with some manual correction, an anticipation means for anticipating, based on the previous amount of correction, the amount of manual correction to be expected during the automatic assembly, and an automatic assembly means for performing correction based on the anticipated value. CONSTITUTION: A built-up segment 11 is roughly positioned near a predetermined assembling position. The boundary between an existing segment ring 2 and the built-up segment 11 along the circumferential direction of a tunnel are illuminated with two of three slits of light from projectors 3a, 3b, 3c, and the boundary between an existing segment 12 and the built-up segment 11 along the direction of the tunnel axis is illuminated with the remaining one slit of light. Light-section images A-A', B-B', C-C' produced by the slits of light are picked up by television cameras 4a, 4b, 4c. A clearance is measured, and correction and positioning are carried out based on the measured value. The rate of automation of segment assembling can thus be enhanced.