Patent ID: 6540095
Filing Date: 2003-04-01
Classification: B66C

Abstract:
A pipe-laying vehicle comprising:a lower vehicle body defining a major vehicle body plane extending along said vehicle body; a driver's cab mounted on said lower vehicle body; a jib having a base end and a free end opposite each other, wherein said base end is pivotally connected to said lower vehicle body so that said jib is pivotable relative to said lower vehicle body about a first pivot axis (8) oriented perpendicularly relative to said major vehicle body plane and about a second pivot axis (11) oriented parallel to said major vehicle body plane; a sheave head pivotally mounted on said free end of said jib so that said sheave head is pivotable relative to said jib about an adjustment axis (32) that extends longitudinally along a longitudinal extension direction of said jib passing through said base end and said free end, and wherein said sheave head comprises two parallel spaced-apart bearing plates, a deflection pulley rotatably arranged between said bearing plates, and an upper block sheave rotatably arranged between said bearing plates and spaced apart from said deflection pulley; a lower block sheave arranged below said upper block sheave, and a pipe suspension device that is adapted to support therefrom a pipe to be laid by said pipe-laying vehicle, and that is connected to said lower block sheave; and a hoist cable running along said jib and deflecting over said deflection pulley, said upper block sheave, and said lower block sheave, so that said hoist cable, said upper block sheave and said lower block sheave together form a block and tackle arrangement for supporting, lifting and lowering the pipe to be laid from said pipe suspension device.