It presents the current status of the tennis partner machine's application,compares and analyzes the property of several typical tennis partner machines.In order to facilitate the training of athletes and provide recreational facilities for the public,it designs a new tennis partner machine.The device's mechanical part consists of serial parts,such as the components of collecting,storing,transporting,pushing,launching and changing elevation angle model.The speed and direction of the launching part is adjustable,so as to meet ...
