Large surface grinder for grinding e.g. parquet floor of building, has frame supporting separate grinding devices, where grinding devices are movably fixed at frame such that curvatures are obtained at large surface

摘要

The grinder has a frame (11) i.e. plate, supporting separate grinding devices (12). The grinding devices are movably fixed at the frame such that curvatures are obtained at a large surface (13). The grinding devices are designed as rotation grinding devices. The grinding devices are supported by a rubber damper (20) whose middle axle (22) runs concentric to rotation axis (23) of the grinding devices. The grinding devices are connected with the frame via a helical spring and provided a grinding wheel (14) with diameter ranging from 10 cm to 20 cm.