| 摘要 |
According to the present invention, applied is a type, similar to a conveyor belt system of a factory, in which an object is carried by a carrier by means of rotation. The upper portion of a conveyor belt has formed thereon a plurality of hook-like protruding portions, in which a tennis ball can be contained, at a fixed interval. The belt, which is endless, is suspended on belt wheels, and the belt wheels are driven by rotating same by means of an electric motor. The conveyor belt has a structure of "L" shape or a "Π" shape rotating 180°. The outer portion of the conveyor belt having formed thereon a plurality of hook-like protruding portions is formed as an outer frame. Both ends of the conveyor belt have belt wheels formed thereon, and bending parts, which are on the center of the conveyor belt that has a structure of an "L" shape or a "Π" shape rotating 180°, each have a support roller (25) formed thereon and in between the hook-like protruding portions, thereby enabling the conveyor belt to move while bent. The belt wheels, a support roller, a tennis ball basket, the electric motor, a switch, a charging device, and one or more wheels that are formed on the lower portion of the frame are supported by means of a frame portion. |
