Motion analysis of conjugate side about opposed biconical cone screw high-pressure seawater hydraulic pump

In order to study the movement principle about the conjugate side of a new type opposed biconical cone screw high-pressure seawater hydraulic pump, motion analysis of the opposed biconical cone screw high-pressure seawater hydraulic pump is carried out by the establishment of surface equation, the surface and the solid model about the cone screw and bush which are the main components of the seawater hydraulic pump. Analysis show that the curves of the section central point\´s displacement, velocity and acceleration about the screw in each axis component are the periodic curves, the period of the curves in two axis of the end is the time which the screw runs around, the period of the curves in axial direction is the time which the screw runs a half cycle, the trajectory about the section central point of the screw is "lip curve" ; the curves of the each point on exterior surface about the screw in each axis component are sine or cosine curves, the cycle of the curves in two axis of the end is the time which the screw runs around, the cycle of the curves in axial direction is the time which the screw runs a half cycle, the trajectories about the different exterior surface point of the screw is different size oval.