B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 37/053 (2006.01)
Patent
CA 2444322
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. Brakes are also operated hydraulically. A group of aligning assemblies are electrically operated and function to extend L-shaped members to beyond the diameter of the pipe being welded so that the unit can be retracted and automatically positioned at the end of a pipe section. A control box is mounted to the line-up unit and includes a radio receiver for receiving control signals and producing corresponding electric control commands for operating the hydraulic and electric components of the line-up unit. A remote control radio transmitter has operating mechanisms, including push buttons and toggle switches, for operating the multiple operative elements of the line-up unit, including the engine, drive motor, brakes, line-up clamp and aligners. By using the remote control unit and transmitting the control signals by radio signal to the receiver in the control box of the unit, there is no need for a reach rod or tether for moving, positioning and operating a line-up clamp. The use of a radio control unit as described reduces the time required for positioning and operating a line-up clamp unit in welding pipe sections to construct a pipeline.
Crc-Evans Pipeline International Inc.
Kirby Eades Gale Baker
LandOfFree
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