(57) The invention relates to the technical field of concrete grinding equipment, in particular
to a concrete grinder and a concrete grinding apparatus. The concrete grinder comprises
a main body, wherein the lower end of the main body is rotatably connected with a
grinding disk, the outer wall of the main body is rotatably connected with a drive
ring, a dust-proof cover is coaxially mounted at the lower end of the drive ring,
a plurality of drive grooves are formed on the inner wall of the drive ring, and the
drive ring is equipped with an adjusting assembly for locking the position of the
drive ring; and the concrete grinding apparatus comprises a main body and a bracket
connected thereto, wherein the bottom of the bracket is equipped with at least two
sliding wheels, a mounting frame is mounted on the bracket, limiting member are mounted
on the mounting frame, an lifting plate is mounted on the main body, limiting grooves
are formed on the lifting plate, the limiting members are inserted in the limiting
grooves in a sliding manner, and the mounting frame is connected with a locking bolt
in a threaded manner. The axial direction of the locking bolt is perpendicular to
the extending direction of the limiting grooves. The invention can improve the precision
of the concrete grinder.
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