Shaft device for water pump bearing

Abstract

The invention belongs to the technical field of bearing shafts and relates to a shaft device for a water pump bearing. The shaft device comprises a bearing outer ring, a shaft, rolling bodies, rubber sealing rings, a holding frame, a bearing shaft, a small shaft, a spline shaft, a threaded hole, a positioning end face, a bearing, lubricating grease, outer ring grooves and shaft grooves. The shaft comprises the bearing shaft, the small shaft and the spline shaft. The two shaft grooves are machined in the positions, corresponding to the outer ring grooves, on the outer circumferential surface of the bearing shaft. The rolling bodies roll between the outer ring grooves and the shaft grooves. An outer spline is machined on the outer circumferential surface of the spline shaft, the outer spline is matched with an inner spline of a belt wheel or a flange plate inner hole, and the rubber sealing rings are arranged on the end faces of the two sides of the bearing outer ring in a sealed manner; transmission force is large, the machining difficult is lowered, matching and installing are convenient, the production efficiency is improved, a transmission part inner hole and the shaft are prevented from being scratched, and end face runout of a transmission part is small; and the overall structural design is simple, the principle is scientific and ingenious, operation is convenient, use is convenient, safety and reliability are achieved, and environment friendliness is achieved in application.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of shaft-connected bearing shafts, and relates to a shaft device for shaft-connected bearings of water pumps, in particular to a shaft structure device used for shaft-connected bearings of water pumps, which reliably fixes power transmission components and effectively transmits power. [0003] Background technique: [0004] The traditional automobile engine water pump shaft-connected bearing, the bearing is composed of outer ring, shaft, rolling element, cage, grease, sealing ring, etc., a water seal and impeller are installed on one end of the shaft, and a pulley or pulley is installed on the other end of the shaft. Flange. Whether it is the impeller, water seal installed at one end of the shaft, or the flange or pulley at the other end of the shaft, they are all installed on the smooth shaft through interference fit. For the impeller and water seal, due to the small transmission power and small for...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art, and to design a shaft device for water pump shaft-connected bearings, so as to solve the problem of insufficient transmission force in the interference fit and high precision requirements for the installation guide surface of the large interference fit. The problem is to overcome the defects that the large interference fit is easy to cause the inner hole of the transmission part to be scratched and the end face to run out, and to solve the problem of difficult processing of the guide surface required by high precision and difficulty in installing the transmission part

Images