Tension-compression fatigue test device for engine cylinder body part
A technology for engine cylinder block and fatigue testing, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, etc. It can solve the problems that the inertial force of moving parts cannot be applied, the impact strength of load simulation is low, and the frequency of test assessment is low, etc., to achieve Conducive to objective evaluation, convenient and reliable assembly, and high test efficiency
Active Publication Date: 2021-04-16
CHINA NORTH ENGINE INST TIANJIN
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Benefits of technology
This patented technical effect of this patents describes an improved type of equipment used for measuring mechanical properties like compression or strain caused by external forces applied over time. These tests involve applying various loads onto the tested part while it remains stationary without changing its shape. They use specialized tools made from materials called steel structures instead of standard ones, making them more efficient than previous designs. Additionally, they have integrated features like stealthyness and vibration isolation, allowing for precise measurement of these factors. Overall, these improvements improve performance and reduce cost compared to existing methods.
Problems solved by technology
This patented technical problem addressed by the inventor relates to testing the mechanical properties (strengths) and functions of castings used in engines due to their complicated structures and diverse needs. These tests involve applying tensile or compression forces over time while changing certain conditions like temperature and humidity. However, current methods require open hydrauled systems which have limitations when trying to achieve accurate results at frequencies ranging from 1000 Hz upwards.
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[0024] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as
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The invention provides a tension-compression fatigue test device for an engine cylinder body part. The device comprises an upper connecting flange, the upper part of the upper connecting flange is used for being connected with an upper actuating head of a high-frequency tester, a non-standard cylinder cover is arranged below the upper connecting flange, a test cylinder body sample piece is arranged below the non-standard cylinder cover, and a straight shaft is arranged at a main bearing hole of the test cylinder body sample piece; the length of the straight shaft stretches across a main bearing seat adjacent to the test cylinder body sample piece, a horizontal lubricating oil channel and a cross oil channel are formed in the straight shaft, an oil inlet pipeline connector is arranged at one end of the horizontal lubricating oil channel, and the lower portion of the straight shaft is hinged to a hinge middle body in the X direction through a hinge connecting rod; and the lower part of the hinged base is connected to a tester working platform through a lower connecting flange. The tension-compression fatigue test device for the engine cylinder body part can realize high-frequency loading, accurate test load, consistent sample failure modes, real-time monitoring and processing of sample states, high test efficiency, clean working environment and the like.
Description
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