Patent RU-2743496-C1 (RU)
Title: Machine for materials fatigue-frictional properties determination
Inventor: Vakhrushev Vladimir Vladimirovich
IPC: G01N3/56
Filed: 2020-07-29
Granted: 2021-02-19
Abstract: FIELD: tribometry testing equipment.SUBSTANCE: inventions group relates to testing equipment in tribometry. Machine contains an electric motor, a torque transducer, bearing supports, a mechanism for frictional loading of a sample, a climatic chamber that supports a support, a sensor designed to transmit information about the rotation frequency and friction path of the sample to a recording device. Climatic chamber contains: a temperature sensor of the working medium inside the chamber, a valve, heating elements and a wear particle sensor. The mechanism of frictional loading of the sample consists of a stationary faceplate, coaxially fixed on the glass. A cam is installed on the stationary faceplate, which rests on the glass through rollers, while four brackets are attached to the stationary faceplate using axles, in the bracket are installed: a roller on the axis and a friction roller on the axis. Load on the friction roller is created by reference weights placed on the rod. A non-contact sensor for measuring the wear of the sample is installed on the cam. In a symmetric loading cycle, the cyclic loading mechanism of the sample consists of an eccentric body with a faceplate installed in it, through a rolling bearing with short cylindrical rollers, the faceplate is connected to a disk on the shaft using threaded connections, the eccentric body through an axis is connected to a dynamometer, which allows you to adjust and control the amount of bending moment on the sample, and the dynamometer through the axis is connected to the pendulum rocker, and the pendulum rocker arm is connected to the bar, which, in turn, is connected to the bracket, a supporting support is installed in the bracket, consisting of a body, an axis in which there is a cavity for installing the sample, the pendulum rocker arm is installed through the axis and bearings into the brackets, and the axis with the bracket is made with the ability to move along the pendulum rocker arm, and the support bracket is connected to the pendulum arm through the rolling bearing, and the pendulum arm is connected to the support using rolling bearings and axles. In the case of a non-zero loading cycle, the sample cyclic loading mechanism contains a drive shaft with a cavity for installing the sample, the pendulum rocker arm is connected to a bar that is connected to the bracket, and a supporting support is installed in the bracket, consisting of a body, an axis in which there is a cavity for installing the sample and bearings , serving as supports for the axle, the pendulum rocker is installed through the axle and bearings in the brackets, while the axis with the bracket is made with the possibility of movement along the pendulum rocker arm, the bracket of the supporting support through the rolling bearing is connected to the pendulum arm, and the pendulum arm is connected to the support using rolling bearings and the axis, the sample is loaded with torque by reference weights through the suspension placed on the pendulum rocker.EFFECT: increase of reliability of determining the fatigue-frictional properties of materials in the presence of lubricating fluids at high / low temperatures and pressures, in an extended range of load, temperature and speed modes.2 cl, 5 dwg