| 摘要 |
FIELD: construction.SUBSTANCE: device comprises a drum (2), installed for rotation and capable of winding and unwinding of a protective cover (10). The specified drum (2) is installed onto a mechanism of longitudinal displacement, comprising: (a) two flexible belts (31), fixed only at each of their ends (35) to four corners of the covered surface, and placed along two sections of the perimetre of the covered surface (3); and (b) a trolley (21), stretching above the covered surface (3) in transverse direction and supporting the drum (2), at the same time the specified trolley (21) comprises on each of its ends: (i) master wheel (9), the axis of rotation of which is parallel to the axis of rotation of the specified drum (2); (ii) at least two rollers (33), resting on the surface directly adjacent to the covered surface (3), and providing for longitudinal movement of the trolley (21), at the same time they are installed at both sides of the master wheel (9) and form with the latter a triangle, in which the master wheel forms its top; so that sections (31 a) of each flexible belt (31), enclosed between its places of fixation (35) and rollers are pressed to the peripheral section of the covered surface, and that the section (31b) of each belt enclosed between at least two rollers (33) stretches along the master wheel (9) without slipping.EFFECT: invention makes it possible to simplify and accelerate process of surface coating, to increase extent of its automation, to increase operational reliability of a coating mechanism.15 cl, 3 dwg |
