Tetherless internal line-up unit for pipeline welding

Details Tetherless internal line-up unit for pipeline welding Tetherless internal line-up unit for pipeline welding

2005-07-12

2005-07-12

Edmondson, Lynne R. (Department: 1725)

Metal fusion bonding

Process

With clamping or holding

C228S044300, C228S044500, C228S047100, C228S049100, C228S049300, C072S125000, C072S297000, C072S314000

Reexamination Certificate

active

06915943

ABSTRACT:
A line-up clamp unit is powered by a diesel engine which drives a hydraulic pump for operating hydraulic equipment in the unit. The unit includes a line-up clamp which has front shoes, rear shoes and expanding copper back-up tiles. Drive wheels are deployed by a hydraulic cylinder and operated by a hydraulic drive motor. A group of aligning assemblies are electrically operated and fiction to extend L-shaped members to beyond the diameter of the pipe being welded so that the unit can be automatically positioned at the end of a pipe section. A control box includes a radio receiver for receiving control signals and producing corresponding electric control commands for operating the line-tip unit. A remote control radio transmitter has operating, mechanisms, including push buttons and toggle switches, for operating the line-up unit, including the engine, drive motor, brakes, line-up clamp and aligners.

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