After the diameter of the rubber ball is determined, the elasticity and weight of the rubber ball cannot be adjusted to a large extent. A rubber ball is provided. The rubber ball has a hollow structure, and the hollow part of the rubber ball is filled with plastic hollow balls. The dimensions of the outer surface correspond to the dimensions of the hollow portion of the rubber ball.
The rubber ball surface is smooth and oiled, comprising a bin body, the middle part of the right side of the bin body is welded with a motor through a fixing frame, and a hollow drum is laterally installed in the middle part of the inner cavity of the bin body through a coupling sleeve.