PURPOSE: To same a test piece by remote control by providing a core drill adapted to bore and break off a core in one process on a robot for sampling a test piece from a concrete structure such as a sewer or the like.
CONSTITUTION: A truck 14 is moved by remote control to monitor the surface statue of a concrete pipe 15 by a telecamera i5. After the truck 14 is stopped at a desired place, a motor 19 is driven to elevate or retreat a table 20, thereby pressing a core drill 22 to the concrete pipe 15. Simultaneously, or preceding to the above operation, the drill driving motor 19 is driven to rotate the core drill 22. Thus an annular hole is formed on the surface of the concrete pipe 13. When the core drill 22 advances by a fixed amount, a taper projection provided on the root of the interior of the core drill 22 is brought into contact with the forward end of the core 10 to break off the core 10. Subsequently, the core drill 22 is retreated so that the core is also drawn out. Then the motor 19 is stopped and the truck 14 is operated to move.
TAKAHASHI YOSHIFUMI
TAKASOU TSUNETO
KAI TAKAAKI
YOSHIOKA HIROAKI
INOUE NAOTAKE
KURIHARA KENICHIRO
MIZOBE HIROSHI
NIPPON HUME PIPE
TOKYO METROPOLITAN GOV
| JPS5328869U | 1978-03-11 | |||
| JPS6389206A | 1988-04-20 |