| 摘要 |
mechanical engineering. SUBSTANCE: invention relates to devices designed for mechanical cleaning of coatings. Proposed scraper with drive from tractor has curved lever 5 with wedge-like scraper 6 mounted on frame, bracket 8 to which lever 5 is hinge-connected, coiled spring 11 one end of which rests on lever 5 and the other, on bushing 13 turned into frame. Tie-rod 12 is passed inside spring 11. One end of tie-rod is hinge-connected with lever 5, and on the other end, provided with thread and fitted with clearance into bushing 13, handle 14 is turned. Weight 17 on frame is designed to prevent separation of frame from surface under cleaning. Hinge joint of lever 5 is made in form of eccentric of shaft fitted in lever hole and mounted in bracket 8 and rotated, for instance, by hydraulic drive. EFFECT: improved quality of cleaning. 3 cl, 11 dwg
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