ARRANGEMENT FOR SURFACE FINISHING OF CONCRETE MIX ARTICLES Russian patent published in 1994 - IPC

FIELD: manufacture of prefabricated concrete and reinforced concrete articles. SUBSTANCE: arrangement has carriage with end face brushes and cylindrical brushes 16. Both end face and cylindrical brushes are provided with pressure and release mechanisms. Each of cylindrical brushes has mechanism for its axial displacement. This mechanism is made in the form of coaxially located drive and driven bevel gears 29 and 30 respectively and intermediate bevel gear 32. Teeth of drive and driven gears are made on undulated initial surface. Means for axial translation of intermediate gear along brush shaft contains slide 33, carrier 35 and worm gearing with controllable worm 37. Slide is disposed on carrier 35, which is rotatable about shaft 25 of brush 16 and retainable by means of worm gear 36. Law of cyclic axial displacement of cylindrical brush is determined by shape of undulated initial surface of intermediate gear 32 on one hand and drive gear 29 and driven gear 30 engageable with it on the other hand. EFFECT: arrangement design makes it possible to set best values of finishing parameters depending on technological features of surface cleaning operation. 8 dwg