GEAR TO SMOOTH CONCRETE SURFACES Russian patent published in 2003 - IPC

FIELD: construction industry. SUBSTANCE: invention is meant to be used as blade working tool of finishing machines, predominantly gantry or cantilever type, employed at factory fabricating reinforced concrete articles, it can also be used in manual smoothing machines. Gear to smooth concrete surfaces includes smoothing working tool in the form of blades mounted of drive shaft with the aid of bearing disc and mechanism changing inclination angle of blades that includes pressure disc mounted on shaft for longitudinal movement along it and interacting with blades through rests. Mechanism changing inclination angle of blades has flywheel mounted on drive shaft for movement along its longitudinal axis which interacts with pressure disc with its lower plane. Vertical guides with limiters positioned on end of each guide are made fast to bearing disc. EFFECT: simplified design, improved quality of machined surface by way of raised accuracy of adjustment of inclination angle of blades, expanded application field of gear. 3 dwg