US 5,165,206 A · Pipe weld crown removal device

Abstract

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.

Claims19

Dependent claims

A device for grinding down the crown of a pipe weld joining first and second pipe sections so that the weld is substantially flush with the pipe sections joined by the weld, said device comprising:

a cage assembly comprising first and second spaced cage rings adapted to be mounted on respective pipe sections on opposite sides of a weld joining the pipe sections;
a plurality of grinding wheels, supported by said cage assembly, for grinding down the crown of the weld;
a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for mounting respective grinding wheels;
a bearing means, disposed at each end of each of said support shafts, for supporting said support shafts for rotation;
means for slidably mounting said bearing means within said first and second rings so as to provide radial movement of said shafts, and thus of said grinding wheels, towards and away from the outer surface of the pipe sections;
a first drive means for providing rotation of said cage assembly around the pipe sections;
and
a second drive means for providing rotation of said grinding wheels.

5 more elements

A device for grinding down the crown of a pipe weld joining first and second pipe sections so that the weld is substantially flush with the pipe sections joined by the weld, said device comprising:

a cage assembly comprising first and second spaced cage rings adapted to be mounted on respective weld-joined pipe sections on opposite sides of a weld joining the pipe sections;
track means adapted to be mounted on the respective pipe sections on opposite sides of the weld, for mounting the cage assembly on the joined sections for rotation around the outer surface of the joined pipe sections;
a plurality of grinding wheels, supported by said cage assembly, for grinding down the crown of the weld;
a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for individually mounting said grinding wheels;
bearing means, disposed at each end of each of said support shafts, for supporting said support shafts for rotation;
means for mounting said bearing means within, in radial extending openings in said first and second cage rings so as to provide radial movement of said shafts, and thus of said grinding wheels, towards and away from the outer surface of the pipe sections;
a first drive means for providing rotation of said cage assembly around the pipe sections;
and
a second drive means for providing rotation of said grinding wheels.

6 more elements

Dependencies are inferred from the claim text.

Pipe weld crown removal device

Life of this patent

Pipe weld crown removal device

Life of this patent

Abstract

Claims19