A dynamic test device for radial elastic force of piston ring circumference

Abstract

The invention belongs to the technical field of piston ring profile design, and specifically relates to a dynamic test device for radial elastic force of piston ring circumference, which includes a fixed component consisting of a piston and a cylinder, and a force applying component composed of a first spring and a second spring. The components are divided into a static measurement component for the circumferential radial elastic force of the piston ring and a dynamic measurement component for the circumferential radial elastic force of the piston ring. The invention is easy to process and manufacture, the principle is simple, and the cost of each component is low; during detection, the piston ring is installed in the ring groove to ensure the stability of the piston ring during detection; the principle of leverage is used in the measurement process to measure the The pressure value in the piston ring is amplified, which reduces the measurement error caused by the accuracy of the sensor itself. The spherical contact between the pin shaft and the lever can improve the measurement accuracy; the stress state and working state of the piston ring can be guaranteed during the measurement process. Consistent, improve the measurement accuracy; can simultaneously measure the radial elastic value at multiple points when the piston ring is working under dynamic conditions.

Description

Technical field [0001] The present invention relates to the field of piston ring type line design, in particular, a piston ring circular radial elastic dynamic test device. Background technique [0002] The piston ring is applied in a mechanical device such as internal combustion engine, compressor, hydraulic pressure, mainly plays a seal and lubrication. [0003] The piston ring is embedded in the piston loop in the working state, which is roughly divided into two types: compression ring and engine oil according to the installation of the piston ring. [0004] The compression ring is used to seal high pressure gas or high pressure oil, and the oil rings are used to scrape excess oil on the wall of the cylinder. The piston ring is non-normal in the free state, and its outer dimensions are larger than the cylinder diameter, and when the piston ring is loaded into the cylinder, it is affected by its own radial elastic force; and there is a certain amount between the piston ring and...

AI Technical Summary

Problems solved by technology

[0007] The detection of the radial elasticity of the existing piston rings is performed manually with artificial aids. There are problems of poor fixation and low repeatability during the detection. In the prior art, it is impossible to measure the radial elasticity of the piston ring at multiple points simultaneously. The efficiency is low, the measurement state cannot be the same as the force state of the piston ring when it is working, resulting in a large measurement error, and there is a problem of high cost of the detection device, so it is necessary to develop a dynamic test device for radial elastic force of the piston ring circumference

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