DEVICE TO ASSEMBLE VESSEL CIRCULAR BUTTS TO BE WELDED Russian patent published in 2010 - IPC B23K37/53 

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for assembling vessel circular butts to welded together and can be used in machine building, ship building, etc. Proposed device comprises tubular bar 7 with brackets 8 and 9. Brackets 8 are locked inside said tubular bar 7 perpendicular its axis, while brackets 9 are locked on the face parallel to its axis. Unclamping driven mechanism is hinged in brackets and consists of a set of reciprocating and turning cylinders connected in series and L-like levers 14, their number corresponding to that of forming sectors 1 and 2. First reciprocating cylinder 10 is fitted in bracket 8 and has its rod connected by L-like levers with turning cylinder 12 fitted in face bracket 9 of tubular rod. Second reciprocating cylinder 11 is arranged on the axle first turning cylinder 12 and has its rod coupled with second turning cylinder 13 articulated with the centre of each forming sector 1. Half of said sectors, next but one, has pins arranged on both sides, while another half has cutouts to make, with mating pins, the steps with tapered holes.

EFFECT: reliable squeezing of backing rind and its locking during welding, ease of removal from welded vessel neck without extra appliances.

4 dwg