A connecting rod fatigue test device

A technology of fatigue test and connecting rod, which is applied in the test of machine gear/transmission mechanism, etc., can solve the problems of fire hazards, low test efficiency, loud noise, etc., and achieve the effect of improving accuracy and reliability

Active Publication Date: 2016-09-07
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First, excessive impact often occurs during the loading process, resulting in abnormal test results, and the reliability of the test results is low;
[0006] Second, limited by objective reasons such as the structural form of the oil cylinder, the test loading frequency cannot be increased, and the test efficiency is low;
[0007] Third, hydraulic loading often produces loud noises, which are harmful to the health of workers;
[0008] Fourth, hydraulic oil is prone to leakage, which not only easily pollutes the workplace, but also may cause fire hazards and endanger safety

Method used

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  • A connecting rod fatigue test device
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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Please refer to figure 1 and figure 2 , figure 1 A structural schematic diagram of a specific embodiment of the connecting rod fatigue test device provided by the present invention; figure 2 for figure 1 side view.

[0032] The connecting rod fatigue test device includes a base 100, a connecting rod 200 and a loading device for loading the connecting rod 200. One end of the connecting rod 200 is fixed to the base 100, and the other end bears the load from the loading device.

[0033] In fact, when the engine is working, the connecting rod 200 is not only affected by the pressure from the piston, but also by the reciprocating inertia force and the swing inertia force. Although the inertia force is relatively s...

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Abstract

The invention discloses a connecting rod fatigue test device, which comprises a base, a connecting rod and a loading device, one end of the connecting rod is fixed on the base, the other end is loaded by the loading device, and the loading device is directed to the Continuously varying compressive and tensile forces are repeatedly applied to the connecting rod. Both the tension load and the pressure load change continuously from zero to the amplitude, and the conversion of tension and pressure is automatically formed, not forced to be applied or withdrawn, that is, the stress process of the connecting rod is continuous, and there is no excessive impact if it does not bear sudden changes The problem of abnormal test results will not occur, and the accuracy and reliability of the test results will be improved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a connecting rod fatigue test device. Background technique [0002] The connecting rod is an important component in the engine. It has a connecting rod small end, a connecting rod large end and a connecting rod body connected between the two, wherein the connecting rod small end is used to install the piston pin and is connected to the piston; the connecting rod large end It is used to connect the crankpin, which in turn connects with the crankshaft. [0003] During the working process of the engine, the connecting rod is always under the pressure of the gas in the cylinder and the reciprocating inertial force, and transmits the interaction force between the piston and the crankshaft, for example, converting the reciprocating linear motion of the piston into the rotational motion of the crankshaft. At any moment in the four strokes of the engine, the force on the connecting rod ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02
Inventor 季炳伟杨建法李京鲁许成
Owner WEICHAI POWER CO LTD
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