DEVICE FOR WINDING MATERIAL WEB ON SHAFT AND UNWINDING FROM SHAFT Russian patent published in 2016 - IPC E06B9/64 

FIELD: manufacturing technology.

SUBSTANCE: this device includes two pulling cables (3, 16) and has the following signs. Material web (2) has the first fastening end (5), with which fabric (2) material may directly or indirectly be attached to bearing structure (8). Material web (2) has opposite to the first fixing end (5) the second fastening end (4), which is fixed in circumferential direction of shaft (1, 15) so, that at rotation of shaft (1, 15) around the axis of rotation of the web (2) of material can be wound on the central section of the shaft (1, 15) and unwound. Shaft (1, 15) has edge sections (10) in its two axial end areas, along the circumference of each area pulling cable (3, 16) is fixed, and both pulling cables (3, 16) during rotation of shaft (1, 15) can be wound on the relevant end sections (10) and unwound. At rotation of shaft (1, 15) in direction of unwinding, where the shaft (1, 15) is moved from the bearing structure (8), material web (2) is unwound with central shaft section (1, 15), and tension cables (3, 16) are wound on the relevant end sections (10) of the shaft. At rotation of shaft (1, 15) in the direction of rotation of the winding, at which the shaft (1, 15) move up to bearing structure (8), fabric (2) of material wound on the central section of the shaft (1, 15), a tension cables (3, 16) unwound from the appropriate end sections (10) of the shaft. Note here that provided for arbitrary length (L) of unwinding material web (2) the first radial distance (R1) from web (2) of material to the axis of rotation differs from the value provided for the length (L) of unwinding of the second radial distance (R2) from pulling cable (3, 16) to the axis of rotation, so that the first torque acting from the side of the material web (2) on the shaft (1, 15) differs from the second torque acting from the side of pulling cables (3, 16) on shaft (1, 15) in the direction and value so that the drive shaft (1, 15) due to difference between the first moment of rotation and the second moment of rotation is carried out by force (F), transmitted by means of pulling cables (3, 16).

EFFECT: device for winding material web (2) on the shaft (1, 15) and unwinding from the shaft.

15 cl, 14 dwg