The Research On The Parts Of The Radial Reciprocating Piston Ppump's Power End

With the continuously rapid development of science and technology, the equipments become more and more automatic and the requirements of the hydraulic pump are also higher.This subject is about researching a new type of four cylinder radial reciprocating piston pump.The power end of the pump uses a double slide cane instead of traditional CAM and crank rod system.It is novel designed, simple and compact structure, smaller and lower noise than traditional pump, energy saving, appearance beautiful, smooth operation, reliable performance, single disassembling and maintenance convenience, wide utilization and so on.The research object is based on the power end of the radial piston reciprocating pump, discussed the deficiencies of the traditional CAM mechanism structure theory and reciprocating pump, devised a new type structure scheme and working principle of the four cylinder radial piston reciprocating pump, designed the key parts of the power structure further, analysised and improved performance.It established the 3d model of the pump body with three-dimensional modeling software Pro/E, for analysising and simulationing the structure improvement further. It established the virtual prototype of the pump power and simulation analysised by Admas,conveniently and fast gained the kinematics and dynamics parameters of the power end parts,intuitively showing the motion characteristics of the four cylinder radial reciprocating piston pump. It provided the reliable basis for designing and improving the four cylinder radial reciprocating piston pump further by combining to the results of the dynamics simulation and the theoretical calculation. It designed the structure,size and dynamic balance of the key parts of the eccentric shaft, and finite element analysised it. Research the distribution of bending stress due to the torque and load points of skateboard. It offseted a certain distance between the four piston centerline and the spindle symmetric line relatived to the spindle rotation direction. It would greatly decreased the bending stress,the degree of load distributed non-uniform and effectively reduced the wear of skateboard, because of reducing the torque of skatbord.The innovationes of this paper lies in: 1. It devised a new type structure scheme and working principle of the four cylinder radial piston reciprocating pump, has the bearing capacity of the crank rod system and the simple structure form of CAM.2. It offseted a certain distance between the four piston centerline and the spindle symmetric line relatived to the spindle rotation direction. It would greatly decreased the bending stress,the degree of load distributed non-uniform and effectively reduced the wear of skateboard.