SU823986A1 - Device for measuring lubricant friction and adhesion - Google Patents

Description

I

This invention relates to friction testing materials.

A device for measuring friction and adhesion is known, comprising a housing, an actuator coaxially mounted in the sample and counter sample housings, an axial load generation system and measurement angles of friction torque and tearing force D-1 - A disadvantage of the known device

This is because the friction torque and pullout measurement nodes are made in the form of elastic elements with load cells glued on them, which predetermines the use of special amplifying and recording equipment, which complicates the measurement process. In addition, the use of known sites for measuring the moment of friction and the effort of separation leads to an increase in the cost of the device as a whole.

The purpose of the invention is to simplify the measurements.

This goal is achieved by the fact that the green measurement of the moment of friction is made in the form of a dynamometer mounted on the body, a track of blocks, one of which is connected to the rod of the dynamometer and the other two are fixed on the body, and a closed power string encompassing the bloom and passing skvs) The hole is made in the holder of the counter piece, and the unit for measuring the pullout force is made in the form of a roller mounted on the holder of the counterbeam, a drum mounted on the housing with the possibility of rotation, and a lead string, which is strangulated by the rotor and the block rod and a dynamometer, the ends of which are attached to the drum.

The drawing shows a diagram of the proposed device. (

The device includes a housing 1, on which an actuator 2 is mounted, connected with a holder 3 of sample 4, made in the form of a glass. In the case, rotatably around its axis and translational movement along it, 6 are mounted, coaxially with holder 3, a holder 5 of a counterpiece 6. Symmetrical relative to the axis of the holders in the case, two blocks 7 and 8 are fixed, and the third two-block block 9, the axis of which is parallel to the axes of blocks 7 and 8 and intersects the axis of the holders 3 and 5, is connected to the rod of the dynamometer Yu attached to the case. Blocks 7, 8 and 9 are enclosed by a closed power string 11 passing through a hole 12 made in the holder 5. The force string 13 bends around the block 9 of the rod of the dynamometer 10 and the roller 14, set-: lenty on the holder 5, and its ends are fixed on the drum 15 mounted in the housing. e 1 rotatably. . The holder 5 is associated with an axial load generating system, which is a set of weights 16 that lie loosely on a shaft 17 fixed to the holder 5. The device operates as follows. Sample 4 is fixed into the holder 3. Then the test liquid (for example, a lubricant) is poured inside the holder. Contrast 6 is installed in the bis holder using the drum 15 and the power string 13, driven into the roller 14, by translational movement along the axis, is brought into contact with the sample 4. Three axial loads on the tested conjugation are created by placing the weights 16 on the platform L7. The force string 11 enters the hole 12 of the holder 5. At the friction measurement station, the power beam 13 does not cover the roller 14. The nature 2 turns on, which is held back by the holder 3 together with the sample 4 fixed in it. Friction that occurs between sample 4 and counterbrasy 6, tends to rotate the latter around its axis. As a result of this, the Yylova string 11 is closed, tending to 864 to tangle onto the holder 5, which is being tightened. The tension force of the string with the ASSISTANCE of blocks 7, 8 and 9 is transmitted to the torque of the dynamometer 10. According to the magnitude of this effort, friction between samples 4 and 6 is judged. When measuring adhesion, the actuator 2 is turned off, the string 11 is output from block 9, and the power string 13 is put on the roller 14, connected to the block 9. The drum 15 is driven into rotation, the counterpiece 6 is detached from the sample 4. The separation force is recorded by a dynamometer 10. The adhesion value is measured by the magnitude of the egogr force. A device for measuring friction and adhesion of lubricants, comprising a housing, an actuator, coaxially mounted in the housing sample and counterpiece holders, an axial load generation system and measurement units for friction moment and peel force, about l and -. In order to simplify the measurements, the friction torque measurement unit is made in the form of a dynamometer mounted on the case, three blocks, one of which is connected to the dynamometer rod, and the other two are fixed on the case and the closed power string covering the blocks and passing through the hole made in the holder of the counter piece, and the unit for measuring the pullout force is made in the form of a roller mounted on the holder of the counter piece, a drum mounted on the body with the possibility of rotation, and a power string enclosing the roller and lok schtoka dynamometer, the ends of which are fixed to the drum. Sources of information received in the examination at l.S-HtorSfc.W.E.The cjie eeion of metoEs McI faeiors-thai in-Etuence it. voET, Lah4chR.R. (PROG-g),

Claims (1)

formula A device for measuring friction and adhesion _{20 of} lubricant grease, comprising a housing, a drive, sample and counter-sample holders coaxially mounted in the housing, an axial load generating system and measurement units * of friction moment and separation force, characterized in that, in order to simplify measurements, the measurement unit the friction moment is made in the vice dynamometer mounted on the housing, three blocks, one of which is connected to the rod of the dynamometer, and the other two are fixed on the housing and a closed power string covering the blocks and passing through the hole, ennoe kontrobraztsa in the holder, and pull-off force measurement unit is made vice roller mounted on the holder kontrobraatsa drum mounted on the housing rotatably and power strings embracing roller dynamometer unit and the rod, the ends of which are fixed to the drum.