SU684342A1 - Method of measuring radial pressure of piston ring on cylinder walls - Google Patents

Description

(54) DEVICE FOR MEASUREMENT OF RADIAL PRESSURE OF PISTON SLEET ON CYLINDER WALLS

The invention relates to the field of measuring instruments and, in particular, to devices used to measure the radial pressures of a piston mepc on the walls of the internal combustion engine's shinshdr.

A well-known multi-tip device for determining the pressure profile of a psr yne-ring containing micrometric screws located in a housing radially; force sensors, made in the form of a P-jub- raznogo elastic element, with strain gauges; elements for transmitting force from the controlled cell to force sensors, made in the form of balls, freely installed in the holder, covering the side walls of the U-junction of the elastic element, do not provide the required accuracy of determining the pressure plot QL |.

The closest in technical terms to the invention is a device for measuring the radial pressures of a piston ring on the walls of the shinshra, comprising a housing, measuring supports, a lever system and a loading mechanism mounted on the housing, a plug — gauge and indicator f2j.

This device has a low measurement accuracy.

The aim of the invention is to improve the measurement accuracy.

This is achieved due to the fact that a rotary table mounted on the housing and spring-loaded adjusting levers are located in the housing, the measuring supports are mounted on the rotary table on the axles and rigidly pressed by the spring-loaded adjusting {plugs to the plug-in gauge.

FIG. I presents an overview of the described device; in fig. 2 - the same, top view; on the f. 3 - place of contact of the plug - gauge with the measuring support.

Claims (2)

The device consists of a housing 1 with a rotary table 2, on which there is a built-in stopper - caliber 3, which corresponds to the nominal diameter of the piston bump. On the turntable 2, there are 12 electrocontact screws 4 to the measuring feet 5, spring-loaded adjusting levers 6, pressing the measuring feet 5 to the cork - caliber 3. To detach the measuring feet 5 in the force measurement position, the wedge slide 7 is mixed by the lever system 8 from the handle 9. The loading mechanism consists of an evening supper load cell with an indicator 10 with a load contact 11, a screw 12 and a carriage 13. The device also incorporates a pin for measuring, consisting of a button 14 and a lever 15. On housing I there is a switch 16, a clamp 17 and signal lights 18 and 19. To turn the table 2 to the next position on its axis, there is a ratchet mechanism consisting of a handle 2O and a ratchet 21. A controlled jack 22 is installed between The measuring points 5 (soadakvdimi) the reference points, located on the nominal diameter of the ring (ig. 3). When turning the handle 20 counterclockwise by means of the lever system 8, move the slider 7 to the left extreme position: In this way, one of the measuring supports 5, A spring stitched stitching device with an inverter Y. At the same time, the system is & 8 presses the microswitch 16, into the signal light 18 lights up. The control ring 22, released at a given point from the support 5, is deformed by the deprecated value b. A screw 12, through a spring gauge meter with indicator 1O, loads the controlled ring 22 at this point until the latter takes its original position. In this case, the loading contact 11 is closed on the screw 4 - the signal lamp 19 lights up. The indicator 10 is removed; indications of the magnitude of the ring pressure force at this site. After the measurement, the spring force meter with indicator 1O is discharged, the loaded contact 11 is opened 68 24 and the warning light 19 goes out. The carriage 13, moving to the extreme right position, releases the wedge slider 7, which firmly closes the measuring support 5 on the surface of the plug — caliber 3. Thereby, the controlled ring 22 is set to its former position. The lever system 8 releases the microswitch 16, de-energizes the device, the signal light 18 goes out. Using the handle 20, through the ratchet 21, the turntable 2 is turned together with the counter-insulated ring 22 to the next position defined by the latch 17. The force is measured at the following points in the order described. At the end of the measurement, when the button 14 is pressed, the levers 15 push the ring 22 out of the device. The device of the proposed construction makes it possible to eliminate the measurement error and, without changing the shape of the ring installation on the outer surface, to determine the force of the ring pressure on the cylinder walls at every point with the greatest accuracy. The invention The device for measuring the radial pressures of a piston ring on the walls of a CESpindra, comprising a housing, measuring supports, {a single system and a load 5 {Sakiai mechanism installed on the housing, a plug — a gauge and an indicator, which, in order to improve the measurement accuracy it has a rotary table fixed on the body and spring-loaded adjusting levers located on the body, with the measuring supports mounted on the turntable on the axles and firmly pressed by the spring-loaded adjusting levers mi to cork - caliber. Sources of information taken into account during the examination 1. USSR author's certificate No. 27548О, cl. Q O1 U 1/04, 1953. 2. USSR author's certificate number 168924, cl. and O1 I 1/04, 195O.