公开(公告)号：US3744259A

公开(公告)日：1973-07-10

申请号：US3744259D

申请日：1971-03-19

Applicant: ATLANTIC RICHFIELD CO

Inventor： WAGLEY A

IPC: E02D29/067 ,  F16L1/024 ,  F16L1/026 ,  F16L1/032 ,  F16L1/00 ,  B60G9/00

CPC classification number: E02D29/067 ,  F16L1/0246 ,  F16L1/026 ,  F16L1/032 ,  Y10T29/49828 ,  Y10T29/49831

Abstract: This machine is designed for laying large-diameter pipe over rough terrain in extreme climates. For example, it was designed to lay 48'''' steel pipe from the Alaskan North Slope across the mountains to the Gulf of Alaska. An enclosed, elongated vehicle or house straddles the ditch in which (or piers on which) the pipe is to be laid. The house is supported at each of the corners by pillars in order to maintain the house level. The pipe is supported through the house on carriages which are free to float from side to side and up and down. Therefore, the pipe is constructed with all its bends and crooks over the support position and the house follows the ditch, providing a warm environment for the workmen. A deck section follows the carriages up and down so the workers have a platform which is always maintained at a fixed position relative to the pipe. As the vehicle moves forward out from under the pipe, the pipe is lowered by a series of trailing roller jacks. A sleeve surrounds the pipe as it leaves the vehicle so the temperature of the pipe is gradually changed from the relatively warm temperature to the frigid arctic temperature.