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1. (WO2018086733) DRILLING DEVICE FOR THE MACHINING OF TUBES ON TUBE FLOORS OF HEAT EXCHANGERS IN A RADIOACTIVE ENVIRONMENT

Pub. No.:    WO/2018/086733    International Application No.:    PCT/EP2017/001291
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Wed Nov 08 00:59:59 CET 2017
IPC: B23B 41/00
B23B 41/10
B23B 31/26
F22B 37/00
Applicants: WESTINGHOUSE ELECTRIC GERMANY GMBH
Inventors: ZIEGELMEYER, Fritz
Title: DRILLING DEVICE FOR THE MACHINING OF TUBES ON TUBE FLOORS OF HEAT EXCHANGERS IN A RADIOACTIVE ENVIRONMENT
Abstract:
The invention relates to a drilling device (10) for the machining of tubes on tube bases of heat exchangers in a radioactive environment. A holding plate (12) can be clamped in the tubes on a first side with at least two retaining fingers (16), and a first drive (30) is arranged on a second side, which drives a tool shaft (57). A tool chuck on a first front side of the tool shaft (57) is detachably connected to said tool shaft, wherein an advance of the tool shaft (57) is caused by an advancing device (20, 24, 46, 48, 50, 26). In addition, an unlocking device (34, 36, 38) can unlock the tool chuck from the tool shaft (57), said unlocking device (34, 36, 38) being controllable with a remote control device.