文档介绍：1 1 ! !"#$%&'()*'+,-./01234*'.56789":;& '/<'=>26?***@AB CD4EFG&'*'-/HI6?JKL/***@AMNO3"P012QR* './*'STBUVWXYZ[*'.\]3^4:;_<'=>)`abc/ de3:<Jfghi[-jkl%XYZ[+,3mn&'"*<'opqrs tu3viwtxyBz{4ghi|j6?q}***@A3~&'*'/!"3 #6$h%g&<''(!"/vi=>******@AB !z{)|Jghi*'.MS*/XYZ*'./+,346$-./* '.+,:<J56b0B !"1*'+, ghi <'=> XYZ q}***@A !"#$%&'153893706 2 2 Abstract Onthebasisofthefirstgenerationofsmashingteedevicemachineserveisto improvethe design and analysis improve volleyball ball speed. First,asimpleanalysisandresearchonthecurrentsituationofthedomesticand internationalvolleyball ballmachine, based onaclear principle byafrictionwheeltee,forexample,targetedtoimprovethespeedoftheball,the rotationcharacteristics,thebeltdrivemechanismtoreplacethefrictionwheeldevice, makingvolleyballinforceissuedbeforetheballlonger,, themechanicalstructureofthebeltdrive,thefocusistothevolleyballservetheprocess, thatis,intotheconveyorbelttothespeedandforceanalysisofthemovementoftheball this process. Finally,summedupthedifferencewiththeTransmissionteeandtheoriginal friction wheel serveto further perfecttee deviceimprovement program. Keywords:Servedevice2Beltdrive2Theballspeed2Frictionwheel2Mechanical analysis 3 3 # $ 34.............................. ........ .............................................................................................. ...................I Abstract ......................................................... ........................................................................................... II 56.............................. ........ .............................................................................................. ...................III #$...............................................................................................................................................1 :;/k<=H>?***@.........................................................................................................1