TENSIONING DEVICE FOR WINDING METAL PIPES INTO A COIL Russian patent published in 2022 - IPC B21D11/06 B21D53/06 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of mechanical engineering and can be used when winding heat exchange pipes for heat exchangers into a coil with a given diameter and winding pitch. The tensioning device contains an upper replaceable roller, two lower replaceable rollers mounted with the possibility of rotation and a caliper with a housing mounted on it with the possibility of rotation around the axis and fixation. A control unit for the longitudinal movement of the caliper is mounted in the housing, depending on the angular movement of the spindle shaft at a given step of winding metal pipes. The upper and lower rollers are mounted in conical bearings in the housing and are made multi-pass with a distance between the centers of the passes, which sets the winding density of the coil. The upper roller is installed with the possibility of vertical movement by means of sliders and adjusting screws.

EFFECT: it is possible to wind heat exchangers with a diameter of up to 2800 mm and obtain densely packed bundles of pipes with different diameters and thicknesses.

3 cl, 3 dwg