DEVICE TO CENTRE AND CLAMP TUBULAR ELEMENTS Russian patent published in 2010 - IPC B23K37/53 

FIELD: machine building.

SUBSTANCE: elongated cylinder 1 houses clamping appliances representing one set of clamping blocks 2 arranged all around said cylinder to radially extend to come in contact with walls of clamped tubes. Drive appliances serve to displace every set of pressure blocks 2 between position they extend from cylinder 1 from and that they are retracted into said cylinder. Set of support elements 5 is arranged on plate 4 mounted to be decoupled from drive member 3. First end of jointing link 6 is arranged to pivot about axle of said support element. Second end of jointing link 6 can pivot about axle of another support element that retains pressure block 2.

EFFECT: ease of manufacture at reduced wear of axles supporting jointing links.

6 cl, 1 dwg