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Title: Pipe weld crown removal device

A device is provided for grinding down the crown of a pipe weld joining aligned pipe sections so that the weld is substantially flush with the pipe sections joined by the weld. The device includes a cage assembly comprising a pair of spaced cage rings adapted to be mounted for rotation on the respective pipe sections on opposite sides of the weld, a plurality of grinding wheels, supported by the cage assembly for grinding down the crown of the weld, and a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for individually mounting respective grinding wheels. Each end of the support shafts is mounted for rotation in a bearing assembly housed within a radially directed opening in a corresponding one of the cage rings so as to provide radial movement of the associated shaft, and thus of the associated grinding wheel, towards and away from the weld. A first drive sprocket provides rotation of the cage assembly around the pipe sections while a second drive unit, driven by a common motor, provides rotation of the grinding wheels.
Authors:
 [1] ;  [2]
  1. (Pleasant Hills, PA)
  2. (West Newton, PA)
Publication Date:
OSTI Identifier:
868547
Report Number(s):
US 5165206
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pipe; weld; crown; removal; device; device; provided; grinding; crown; pipe; weld; joining; aligned; pipe; sections; weld; substantially; flush; pipe; sections; joined; weld; device; cage; assembly; comprising; pair; spaced; cage; rings; adapted; mounted; rotation; respective; pipe; sections; opposite; weld; plurality; grinding; wheels; supported; cage; assembly; grinding; crown; weld; plurality; support; shafts; extending; longitudinally; joined; pipe; sections; parallel; thereto; individually; mounting; respective; grinding; wheels; support; shafts; mounted; rotation; bearing; assembly; housed; radially; directed; corresponding; cage; rings; provide; radial; movement; associated; shaft; associated; grinding; wheel; towards; weld; drive; sprocket; provides; rotation; cage; assembly; pipe; sections; drive; unit; driven; common; motor; provides; rotation; grinding; wheels; radial movement; pipe sections; pipe sections; pipe sections; pipe sections; pipe sections; bearing assembly; grinding wheels; grinding wheels; grinding wheels; support shaft; support shaft; extending longitudinally; assembly comprising; drive unit; removal device; radially directed; grinding wheel; grinding wheel; grinding wheel; grinding wheel; sections joined; provide radial; pipe weld; pipe weld /451/29/409/