Patent ID: 6321778
Filing Date: 2001-11-27
Classification: F16L,Y10T

Abstract:
An apparatus for pipeline construction, comprisinga constructing mechanism (3) located on a lower part of the apparatus and including a chest (48) and a constructing unit completely receivable within the chest (48) for completing operations;a feeding mechanism (16) located on an upper part of the apparatus and to drive the constructing unit to rotate and move axially toward the pipeline; said feeding mechanism (16) includes a main shaft (31), a rod (32), a driving mechanism (13) and a rod feeding mechanism; said main shaft (31) having a central hole extending through said feeding mechanism (16) to drive said constructing unit; said rod (32) is provided within the central hole of the main shaft (31) and selectively moves with respect to said main shaft (31) to drive said constructing unit to approach the pipeline; said driving mechanism (13) transmits power to said main shaft (31) and drives said main shaft (31) to rotate and to move axially; and said rod feeding mechanism drives said rod (32) to move axially; anda base (6) including a bottom of said base (6) detachably connected with said constructing mechanism (3) and a top of said base (6) detachably connected to said feeding mechanism (16);wherein said rod feeding mechanism comprises a mechanism for controlling said rod (32) to rotate or not to rotate along with said main shaft (31).