ギヤポンプにおけるサイドプレート周りの変位解析

抄録

Gear pumps are used in dump trucks and other construction equipment, and can be regarded as the heart of construction machinery that produces hydraulic pressure driven by the engine. At present, gear pumps are required to have performance comparable to that of axial piston pumps, and it is essential to improve the efficiency of gear pumps to achieve this. There are several ways to improve efficiency, but oil leakage from the high pressure side to the low pressure side inside the gear pump is a critical issue, and true efficiency improvement cannot be expected without solving this problem. One of the oil leakage points inside the gear pump is around the side plate. However, there are few studies on the displacement of side plates, gear cases, brackets, and covers during operation. In this study, we obtained basic knowledge about the displacement around the side plates under gear pumps operation by analysing the displacement with a 3D model of the component around the side plates.