文献类型：专利

英文题名：Torsion device for drill pipe, has helical mold that is arranged between chuck and heating coil such that central axial lines of helical mold and chuck are arranged coaxially along translational direction of translational unit

作者：HE Y;LI P;SU H;TANG A;WANG S

机构：[1]UNIV EAST CHINA SCI&TECHNOLOGY;[2]ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS C;[3]ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD;[4]ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO

申请号：CN101602075-B

公开日：2011-12-07

语种：英文

收录：DERWENT

摘要：NOVELTY - The device has a transmission unit (2) comprising the output shafts (202,203), which is connected to a drive motor. A chuck (5) is mounted on the end portion of output shaft (202), to hold the drill pipe. A heating coil (6) is wound around the drill pipe such that a translational unit (3) is positioned on the end portion of output shaft (203). A helical mold (4) of translational unit is arranged between the chuck and coil such that central axial lines (41,51) of the mold and chuck are arranged coaxially along the translational direction of translational unit. USE - Torsion device for drill pipe. ADVANTAGE - The uniform torsion can be applied reliably to the drill pipe. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of torsion device. Transmission unit (2) Translational unit (3) Helical mold (4) Chuck (5) Heating coil (6) Central axis line of helical mold (41) Central axial line of chuck (51) Output shafts (202,203)