INSTALLATION FOR ELECTRIC ARC FUSION OF NON-ROTATING ARTICLES Russian patent published in 1998 - IPC

FIELD: welding and fusion of non-rotating large-size heavy articles in different industry branches. SUBSTANCE: installation includes frame 1. Jig 4 for fixing articles 5 and strut are mounted on frame. Bracket 31 is secured to rotation mechanism 11. Bracket carries feed mechanism 32 with electric motor, energy supply unit and electrode-wire coil. Switching assembly 36 is in the form of hollow shaft and outer sleeve. One end of lever 56 is electrically insulated and secured to outer sleeve. Other end of lever is mounted with possibility of lengthwise reciprocation motion onto articulated joint support 58 secured to rotation mechanism 11. Energy supply unit is arranged on lever 56 and it is electrically connected with spring-loaded electric-contact brushes. Electrically insulated current collecting rings are secured to hollow shaft and electrically connected with electric motor of feed mechanism. Hollow shaft is mounted on bracket 30 with possibility of rotation and fixation in predetermined position. Installation allows to eliminate winding of current conducting wires around moving members and provides possibility of continuous fusion of non-rotating cylindrical, conical and flat outer and inner surfaces along helical line. EFFECT: improved design, enhanced efficiency, enlarged using range. 2 dwg