Gear box oil pump having oil unloading structure, and gear box
A gearbox and oil pump technology, applied in the field of machinery, can solve the problems of increased oil leakage, deformation of the oil pump casing and diaphragm, etc., and achieves the effect of reducing the axial force and improving the service life.
Pending Publication Date: 2019-01-01
江阴华欧德汽车动力系统研发有限公司
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The invention provides a gear box oil pump having an oil unloading structure, and a gear box. The gear box oil pump is characterized in that a shell is provided with an annular groove and an oil unloading channel, the annular groove is positioned on the outer side of an oil pump rotor, and is arranged on the surface, attached to a separation plate, of the shell, the oil unloading channel is communicated to the annular groove, the separation plate is provided with a communication hole, one end of the communication hole is communicated to the annular groove, and the other end of the communication hole is communicated to the oil suction channel of the gear box oil pump. According to the present invention, the annular groove and the oil unloading channel communicated to the annular groove arearranged on the oil pump shell, and the communication hole respectively communicated to the annular groove and the oil suction channel of the oil pump is arranged on the position, corresponding to theannular groove, of the separation plate, such that the oil liquid in the gap between the oil pump shell and the separation plate can be discharged to the oil suction port of the oil pump so as to slow down the rising speed of the oil pressure in the gap between the oil pump shell and the separation plate, effectively reduce the axial force of the oil liquid on the part in the oil pump, and improve the service life of the oil pump.
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