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, which is made in the form of satellite gear 31 with pin 30, stationary gear wheel 33 with carrier 32, crank 35 and dog 29. Dog of shaft 24 of brush 16 is kinematically associated with pin 30 of satellite gear 31. Satellite gear shaft is pivotally connected with carrier 32. Satellite gear 31 is engaged with stationary gear wheel 33. One end of carrier 32 is secured in support of axial displacement mechanism housing and the other is connected via connecting rod 34 with crank 35, which is shifted relative axis of carrier 32 and rigidly secured on drive shaft. Possibility for programmable rotary motion and reciprocal displacement of cylindrical brush with variable angular and vertical linear accelerations allows setting necessary parameters of brush vibration to obtain most favorable effect of brush action onto surface being worked. EFFECT: improved quality of surface finishing of concrete mix articles. 8 dwg