MILLING OR GRINDING MACHINE FOR FINISHING FLAT SURFACES SUCH AS FLOORS OF STONE, CONCRETE OR SIMILAR HARD MATERIALS

摘要

The invention relates to a self-propelled grinding or milling machine for finishing a surface of concrete or similar hard material, eg a floor.
The machine, which consists of a frame carried on a number of wheels in which a rotating grinding or milling tool with a vertical shaft is suspended and loaded with weights so that the pressure of the wheels on the surface is maintained at a constant level at varying working pressures of the tool, is arranged to tilt laterally by means of a raising and lowering device which acts on the non-steerable wheels so that the pressure of the tool on the floor differs on the right-hand and left-hand side and so gives rise to frictional forces which cause the machine to move forward and rearward respectively at a speed which is dependent on the magnitude of tilt.