DEVICE FOR CHECKING SHAPE OF PIPELINE CROSS-SECTION Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: device has measuring unit with recording element and mechanism intended for retaining measuring unit on pipeline and made in the form of sections of flexible tape connected with the aid of rollers and spring lock. Measuring unit is made in the form of hinge-connected carriages bearing support rollers connected with flexible tape sections. First carriage is provided with upright pivoted to tie rod carrying pivotally connected lever accommodating additional pivot for connection with upright of second carriage. Lever is connected by screw to guide plate, one end of which has longitudinal recess and the other is provided with recording element pressed to measuring disk on end face of drum, axle of which is secured on upright of second carriage. Drive of drum rotation is made in the form of reel seated on axle of one of rollers of retaining mechanism and provided with flexible carrier, one end of which is wound on drum and second is fixed on reel. EFFECT: enlarged potentialities of device due to simultaneous measurements of curvature radii of cross section under check and its perimeter. 3 dwg