VERTICAL OFFLINE STAND BUILDING AND MANIPULATING SYSTEM

摘要

A vertical off-line stand building system includes a mast having a basal portion and an upper portion. An upper pipe elevator is mounted in the upper portion of the mast and is selectively translatable by a selecting actuable first hoist between upper raised and lowered positions. A lower pipe elevator is mounted in the basal portion of the mast and is selectively translatable by a selecting actuable second hoist between basal raised and lowered positions. A horizontal pipe support table is positioned adjacent the base of the mast. A horizontal pipe translator is mounted in the table for translating a pipe single longitudinally along the table so as to engage a first end of the pipe single with the lower pipe elevator when in its basal lowered position. The lower pipe elevator draws the first pipe into the mast through a front opening in the mast. The upper pipe elevator takes the first pipe and elevates it to the top of the mast. The lower pipe elevator raises the next pipe into the mast which is then threaded to the first pipe and the pipe stand then elevated by the upper pipe elevator so that the lower pipe elevator may add successive pipes to the pipe stand. The rear of the mast is entirely open so that the assembled pipe stand may be removed.