Pipe weld crown removal device

Patent · 31 December 1991

OSTI ID:868547

Sword, Charles K ^[1]; Sette, Primo J ^[2]

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1. Pleasant Hills, PA
2. West Newton, PA

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.

• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5165206
• OSTI ID: 868547
• Country of Publication: United States
• Language: English

Related Subjects

/451/29/409/
adapted
aligned
assembly
assembly comprising
associated
bearing
bearing assembly
cage
common
comprising
corresponding
crown
device
directed
drive
drive unit
driven
extending
extending longitudinally
flush
grinding
grinding wheel
grinding wheels
housed
individually
joined
joining
longitudinally
motor
mounted
mounting
movement
opposite
pair
parallel
pipe
pipe sections
pipe weld
plurality
provide
provide radial
provided
provides
radial
radial movement
radially
radially directed
removal
removal device
respective
rings
rotation
sections
sections joined
shaft
shafts
spaced
sprocket
substantially
support
support shaft
supported
thereto
towards
unit
weld
wheel
wheels