CURVE PROPELLING METHOD FOR SMALL CALIBER PIPE

• Main Authors: TAKEGAKI YOSHIKATSU, MORIOKA KINYA, KATO KAZUNORI, KATANO KOJI, SATO TSUTOMU, YAMANA MAMORU, TAKAHASHI HIROKI, YAMAZAKI TAKAHIRO, MORITAKA YUKI, NOZAWA TAMOTSU, NOAMI HAYAO, KIMURA NOBUHIRO, KAWASHIMA SHINJI, TAKEUCHI KATSUNOBU, IGARASHI KAZUYUKI
• Format: Patent
• Language: English
• Published: 09.09.1997
• Edition: 6
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

PROBLEM TO BE SOLVED: To make it possible to laid a long distance curve of a buried pipe while correcting a locus by subsequently jointing a knee bending control connection pipe and a knee bending connection pipe to a propelling machine, traveling a traveling instrument in both connection pipes with joint, and measuring a propelling locus. SOLUTION: Knee bending control connection pipe 3a and knee bending connection pipe 3b are jointed to a propelling machine 1 equipped with an excavation cutter 2. Both connection pipes 3a and 3b are hinged with a pin in a bendable manner. They are jointed to both opening ends with bolt and nut, and a traveling way 6 is constructed. Jacks 7 having a wire type expansion length measuring device to a knee bending site are used for the knee bending control connection pipe 3a to control elongation together with an outside controller. A traveling instrument 8 mounting a bearing angle detector and a moving distance detector such as rotary encoder, etc., thereon is traveled on the traveling way 6 to measure a traveling distance and direction, and a curve is made while correcting a locus by expansion controlling the jacks 7.