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A kind of piston ring fatigue testing machine and fatigue testing method

A fatigue testing machine and piston ring technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve the problems of unstable rotation speed, complex mechanism, easy falling off of piston rings, etc., to improve the degree of automation , The effect of improving test accuracy and improving work efficiency

Active Publication Date: 2018-08-03
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional piston ring fatigue testing machine has unstable speed and large vibration during operation, the piston ring is easy to fall off, and the mechanism is relatively complicated, which cannot accurately simulate the fatigue life of the piston ring, and the measured life of the piston ring fatigue test varies greatly , the existing equipment cannot meet the detection requirements

Method used

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  • A kind of piston ring fatigue testing machine and fatigue testing method
  • A kind of piston ring fatigue testing machine and fatigue testing method
  • A kind of piston ring fatigue testing machine and fatigue testing method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as Figure 1-6 As shown, a piston ring fatigue testing machine includes a base 1, a three-phase asynchronous motor 2 is fixedly installed at the lower end of the base 1, and the motor 2 is connected to a camshaft 6 through a pulley 3. The cam and one end of the spring push rod 8 form a cam push rod transmission fit, the middle part of the spring push rod 8 forms a sliding fit with the guide rail 7, the other end of the spring push rod 8 is connected to the piston ring clamp body 11, the piston A sensor 10 is arranged in the middle of the ring clamp body 11, and the sensor 10 is electrically connected to the control cabinet 4. The control cabinet 4 is provided with a counter, and the control cabinet 4 is installed on the top of the base 1. The fatigue life of the piston ring can be studied by the above-mentioned fatigue testing machine, and the structure of the equipment is simplified through the cam transmission cooperation, thereby improving the reliability of the ...

Embodiment 2

[0047] The method of using any plug ring fatigue testing machine for fatigue testing includes the following steps:

[0048] S1: Fix the open ends of the 8 piston rings 9 to be tested on the fixed part and the movable part of the piston ring clamp body 11, and fix them with screws;

[0049] S2: Set the motion law of the camshaft 6 according to the model and use environment of the piston ring 9 to be tested, set it to the fifth-order polynomial motion law, and ensure that the stroke h of the push rod is the free opening size of the piston ring. The button on the control cabinet 4 sets the number of fatigue tests;

[0050] S3: By starting the motor 2, the driving wheel 31 is driven by the motor 2, and the driving wheel 31 drives the driven wheel 33 to rotate through the belt 32. The driven wheel 33 and the camshaft 6 are connected by a flat key to transmit power to the spring push rod 8, and the spring pushes The rod 8 is connected to the movable part of the piston ring clamp body 11, ...

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Abstract

The invention discloses a piston ring fatigue testing machine and a fatigue testing method. A pedestal is included. A lower end of the pedestal is fixedly provided with a three-phase asynchronous motor. The motor is connected to a camshaft through a belt pulley. A cam on the camshaft and one end of a spring push rod form cam push rod transmission cooperation. A middle portion of the spring push rod and a guide rail form sliding fit. The other end of the spring push rod is connected to a piston ring fixture body. A middle portion of the piston ring fixture body is provided with a sensor. The sensor and a control cabinet are electrically connected. A counter is arranged in the control cabinet. The control cabinet is installed on a top of the pedestal. The structure is simple and operation is convenient. Fatigue lives of eight groups of piston rings can be detected simultaneously. A condition that one piston ring generates an abnormal value during detection is prevented. One range where a data difference can be allowed and accepted is convenient to analyze. A force bearing condition of the piston ring in a fuel engine can be simulated and an effect of detecting whether the fatigue life of the piston ring accords with a design requirement is reached.

Description

Technical field [0001] The invention relates to a piston ring fatigue test equipment in a fuel engine, in particular to a piston ring fatigue test machine and a fatigue test method. Background technique [0002] The present invention mainly studies the structural forms of engine piston rings that are common at home and abroad and designs a common piston ring fatigue testing machine structure with a basic diameter between 85mm and 135mm. It is an important part of the engine. The service life of parts directly affects the interval between engine overhauls. The piston ring fatigue testing machine is a very important testing machine, which is a mechanical afterburner testing machine used to test the mechanical properties of piston ring materials such as tension and compression. The traditional piston ring fatigue testing machine has unstable rotation speed and high vibration during operation. The piston ring is easy to fall off, and the mechanism is relatively complicated. It canno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 王道吴海华
Owner CHINA THREE GORGES UNIV
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