Axial and radial hydrostatic gear pump with helical teeth and double arc teeth

Abstract

A helical double-arc gear hydraulic gear pump supported by axial and radial static pressure. The hydraulic gear pump includes a pump body, a driving gear shaft and a driven gear shaft; The end cover, the driving gear shaft and the driven gear shaft are all supported in the pump body through radial hydrostatic bearings; the axial force bearing ends of the driving gear shaft and driven gear shaft are all installed on the rear end cover through thrust sliding bearings , the other end of the driving gear shaft protrudes from the front end cover. In the gear pump, the floating sleeve and the journal of the gear shaft form a radial static pressure sliding bearing, and the thrust sliding bearing and the end face of the gear shaft form a thrust static pressure sliding bearing. The static pressure formed by the floating sleeve and the thrust sliding bearing The pressure sliding bearing supports the gear shaft and bears the radial force and axial force of the gear shaft. The friction surface is mainly lubricated by hydrostatic pressure, which can not only balance the axial force and radial force of the gear shaft, but also significantly reduce friction power consumption and The wear of the contact surface prolongs the service life of the gear pump.

Description

technical field [0001] The invention relates to a helical-tooth double-arc-tooth hydraulic gear pump capable of realizing axial and radial static pressure support of a gear shaft. It belongs to the technical field of hydraulic gear pumps. Background technique [0002] The hydraulic gear pump is one of the main components of the hydraulic system. Its function is to convert the mechanical energy of the prime mover into the pressure energy of the liquid and provide power to the entire hydraulic system. It plays an important role in the hydraulic system. The gears used in traditional gear pumps are usually straight-toothed involute toothed gear pumps. The advantages of this gear pump are simple structure, good manufacturing process and low price. To ensure the smooth meshing and operation of the gears, the overlap coefficient must be greater than 1 during the meshing process of the gears, that is, before the previous pair of teeth is out of mesh, the latter pair of teeth enters...

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a helical double-arc tooth hydraulic gear pump with axial and radial static pressure support of the gear shaft, so as to solve the problem of the helical double-arc tooth hydraulic gear pump due to axial Problems caused by force and radial force

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