MULTISTAGE FRICTION MACHINE Russian patent published in 2016 - IPC G01N3/56 

FIELD: test equipment.

SUBSTANCE: invention relates to test equipment, namely to specimens external and internal cylindrical surfaces tribological tests devices, and can be used in testing for wear, for example, cylinder liners, shafts, etc. Multistage friction machine comprises housing, samples and counter samples holders, rotation drive and loading mechanisms. Loading mechanism is made in form of independent units for each friction pair, installed on L-shaped holders, wherein holders are located on opposite sides parallel to sample holder axis and shifted relative to each other by value equal to half the distance I between loading mechanisms assemblies mounting axes, thus creating only one friction pair in sample to counter samples contact plane, and each loading assembly comprises one-way hydraulic cylinder, which rod is connected to pivoted in barrel spring-loaded counter sample to sample clamp via force meter; wherein hydraulic cylinder output and input are connected with hydraulic station inlet and outlet, respectively, by pipelines, whereto electric power supply unit and system control station with output and input to computer or personal computer through analogue-to-digital and digital-analog converter signals amplifier unit are connected.

EFFECT: technical result is expansion of functional capabilities when performing multiple-factor experiment, higher efficiency, accuracy and reliability of test results.

1 cl, 3 dwg