发明名称 PROCESS AND DEVICE FOR SETTING UP AND CONTROLLING A HYDRAULIC CHUCKING OF ONE OR A PLURALITY OF BOLTS
摘要 <p>Process for setting up and controlling the axial preloading of a chucking portion (34) of at least one stem of the screw or bolt type (4). Preloading comprises tensioning the extended portion (33) of the stem (4) comprising the chucking portion (34), using a load-handling device (9) of the stem (4) and a tensioning device (6). The control process comprises a stage where, before preloading, the tensioning device is brought into a rest position and the load-handling device (9) is brought alongside the tensioning device (6) in the rest position, and a stage where, after the preloading has been completed, the tensioning device is returned to the said rest position and flattened in the rest position toward one of the extremities of the extended portion (33) and a comparison is made, in relation to a threshold, of the difference between the initial length (Li) and the final length (Lf) of the extended portion (33).</p>
申请公布号 WO2008025922(A2) 申请公布日期 2008.03.06
申请号 WO2007FR51832 申请日期 2007.08.20
申请人 AKTIEBOLAGET SKF;MONVILLE, JEAN-MICHEL 发明人 MONVILLE, JEAN-MICHEL
分类号 G01L5/24 主分类号 G01L5/24
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