Oil seal radial force testing method

Abstract

The invention discloses an oil seal radial force testing method, and provides an oil seal radial force testing device and an oil seal sealing ring. The testing device comprises a to-be-tested supporting seat and a test shaft. The test shaft is fixed on the to-be-tested supporting seat. A positioning structure is arranged between the to-be-tested supporting seat and the test shaft. The positioningstructure comprises a first screw hole array, a second screw hole array and a positioning group. The first screw hole array comprises a plurality of first screw holes. The first screw holes are distributed in the to-be-tested supporting seat in an array form. The first screw hole array comprises a plurality of first screw holes, the second screw hole array comprises a plurality of second screw holes, the second screw holes are distributed in the test shaft in an array form and are arranged corresponding to the first screw holes. The positioning group comprises a plurality of positioning screws, and the positioning screws are in threaded connection with the first screw holes and the second screw holes. The oil seal radial force testing method provided by the invention is simple to operate,wide in measurement range and high in measurement precision.

Description

technical field [0001] The invention relates to the technical field of oil seal radial force testing, in particular to an oil seal radial force testing method. Background technique [0002] The radial force of an oil seal is a key parameter to characterize its sealing performance and service life. Selecting an oil seal with a suitable radial contact force is an important basis for structural optimization. Therefore, the measurement of the radial force of an oil seal is particularly important. The current method of testing the radial force of the oil seal basically encapsulates the oil to be tested on the test shaft, and the test shaft is fixed on two half shafts, one of which is fixed and the other half shaft is a displacement sensor. A force sensor is installed on the fixed half shaft. The core element of the sensor is a strain gauge. The measured deformation of the strain gauge is converted into a force value to obtain the radial force of the oil seal. In this way, the me...

AI Technical Summary

Problems solved by technology

In this way, the method of only installing a force sensor on the fixed half shaft for measurement cannot fully obtain the measurement data of the radial force of the oil seal, resulting in low measurement accuracy

And the existing oil seal radial force testing device cannot conveniently measure oil seals with different diameters

Scholars at home and abroad are also constantly exploring the issue of controlling the shaft diameter of the oil seal. For example, CY Lee proposed to use a hollow sealed shaft sleeve in the article "Simulation and experimentation on the contact width and pressure distribution of lipseals" (2006). Internal pressure is applied to adjust the shaft diameter, and strain gauges are used to measure the change in shaft diameter. Although this method ensures the integrity of the shaft sleeve, the structure is complex and the measurement range is limited.

Images