Joint bearing self-lubricating gasket abrasion testing machine

Abstract

The invention relates to the technical field of bearing bush tests, and particularly discloses a joint bearing self-lubricating gasket abrasion testing machine which comprises a testing bottom table,a driving device, a loading device, a guiding device and a gasket fixing device, and the driving device, the loading device, the guiding device and the gasket fixing device are installed on the testing bottom table.The loading device comprises a support provided with a mounting through hole, a screw rod installed in the installation through hole, a first loading nut and a second loading nut whichare located above and below the support respectively, a pressure sensor installed on the screw rod, and a sliding block fixed to the support. The support is hinged with the driving device; the slide block is slidably connected with the guide device; and the screw rod is fixed on the support by the first loading nut and the second loading nut. According to joint bearing self-lubricating gasket abrasion testing machine, the loading device applies loading force to the gasket through the first loading nut and the second loading nut, the loading strength can be met, and continuous and accurate adjustment of the loading force is achieved in combination with measurement of the pressure sensor.

Description

technical field [0001] The invention relates to the technical field of bearing bush testing, in particular to a wear testing machine for self-lubricating pads of joint bearings. Background technique [0002] Self-lubricating spherical plain bearing is a kind of spherical sliding bearing, and its structure is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. The self-lubricating liner material is inlaid or bonded between the inner and outer rings, making it maintenance-free, lubrication-free, and small in friction factor. Therefore, the performance of the liner is particularly important for joint bearings. Once the liner is severely worn, it will lose normal lubrication. Therefore, it is necessary to test the friction and wear performance of the self-lubricating liner by a testing machine, so as to ensure the performance of the self-lubricating liner. [0003] At present, there are some liner wear testing mach...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some liner wear testing machines, such as hydraulic equipment for loading testing machine (patent number CN207703659U), but the hydraulic equipment is too large and complex, which will lead to maintenance difficulties and increase the risk of test bench load

In addition, the sleeve type rolling friction (patent No. CN107560932A), its radial load is applied to both ends of the central shaft, long-term loading will cause the deformation of the central shaft and affect the wear of the liner

In addition, the reciprocating double-station friction and wear testing machine (Patent No. CN106092794B) adopts a cushion heavy object lever type loading method, which is simple and convenient, but it needs to be configured with different weights, and the movement method used is a motor-driven disc Rotary movement requires additional gear system

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