PURPOSE: To ensure an inner face welding by providing a bendable and expandable linking member and by linking with other linking member via linking member with wheels.
CONSTITUTION: The first, second and third link members 1, 2, 3 is respectively linked via link members 4, 5, 6 and pins. A torch 11 is arranged freely attached freely attachably and detachably via a knob 12 on a torch stand 10 on the midway of the first link 1. Conduplicatable arm levers 3a, 3b are fitted pivotally by pin 3c on the midway of the third link 3 and a fixed knob 16 is enabled to form the third link member 3 as well. Wheels 17, 18, 19 are provided on each link member 4, 5, 6 and the wheels 17, 19 are made drivable. With this mechanism the welding equipment is loaded with being bent into the narrow inner face of a work and enables the welding of the inner peripheral curved face via the driving wheels 17, 19. The inner face welding is therefore surely performed.
UCHIDA TAKAO
TAKENAKA KAZUHIRO
TOMOTA KENJI
KONDOU MITSUNORI
