Summary
Hydraulic pump is the power component of hydraulic systems, its performance has a direct impact on the performance and reliability of the hydraulic system, it plays a important part in the hydraulic transmission.
The content of paper includes two parts: the noise analysis of hydraulic axial piston pump and improved design of structure. This paper focused on the noise analysis of hydraulic axial piston pump and the contrast experiment before and after the improved design. First based on the basic principles of hydraulic pumps, the axial piston pump is introduced combining with their own characteristics. Then, the impact factors for axial piston pump noise is analyzed, as well as improved methods and what factors are related to optimized structure. Finally, the reason of improved design and the design steps is showed gradually.
The improved design to reduce the noise of the axial piston pump mainly analyze on the three pairs of friction which influenced on the noise of the axial piston pump, such as: the friction between cylinder and plate, the friction between variable and slipper, the friction between plunger and the plunger hole. The paper improves the structure of the first friction and use the structure of slipper with the plunger packaged. The experiment was been proved that the length of the rat tail belong to plate which influence the pump noise. Through a series of experiment on the length of rat tail to found a proper dimension. During the experiment, satisfactory results were achieved because of several groups cylinder and plates were selected in experiment.
Main advantage of this text,all with trial-produce experiment set out,have good application prospect and better economic worth from production practices.
