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A Piston Mechanical Fatigue Test Device That Can Apply Lateral Force

A technology of mechanical fatigue and test device, which is used in the testing of mechanical parts, measuring devices, and testing of machine/structural parts, etc. It can solve the problem of mechanical fatigue results of piston parts, fail to simulate the pressure on the side of the piston, and cannot simulate the lateral direction of the piston. force and other problems, to achieve the effect of simple structure, reasonable device design and easy realization

Active Publication Date: 2018-11-02
CHINA NORTH ENGINE INST TIANJIN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing test method fails to simulate the side pressure of the piston when it is working, and with the improvement of engine strengthening, the gas explosion pressure is getting higher and higher, and the problem of piston skirt failure is constantly exposed, while the traditional test device cannot simulate the whole machine The lateral force on the skirt of the piston in the case of the piston has brought difficulties to the evaluation of the mechanical fatigue results of the piston

Method used

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  • A Piston Mechanical Fatigue Test Device That Can Apply Lateral Force
  • A Piston Mechanical Fatigue Test Device That Can Apply Lateral Force
  • A Piston Mechanical Fatigue Test Device That Can Apply Lateral Force

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Embodiment Construction

[0023] 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.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] A piston mechanical fatigue test device capable of applying lateral force, such as figure 1 , 2 As shown, it includes a top plate 1, a support body 2, a piston pin 3, a bolt 4, a base 5, a sealing ring 6, a non-standard connecting rod 8 and a connecting rod base 9, and the top plate 1 and the base 5 are installed on the support body 2 respectively. The upper and lower ends are fixed by bolts 4; the connecting rod base 9 is arranged on the upper surface of the inner base 5 of the support body 2, and one end of the non-standard connecting rod 8 and the pin hole on the connecting rod base 9 adopt the original machine piston The piston pin 3 with the same pin is hingedly connected, ...

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Abstract

The invention provides a piston mechanical fatigue tester capable of applying a side force. The tester comprises a top plate, a support body, a piston pin, a pedestal, a non-standard connecting rod and a connecting rod pedestal, wherein the top board and the pedestal are mounted in upper and lower ends of the support body respectively; a connecting rod base is arranged in the upper surface of the pedestal in the support body, one end of the non-standard connecting rod is hinged to a pinhole in the connecting rod base via the piston pin, and the other end of the non-standard connecting rod is provided with a pinhole which is connected with a piston testpiece via the piston pin; and an included angel alpha exists between the non-standard connecting rod and the vertical direction. The tester can simulate the side force born by a skirt portion of a piston in the whole machine condition, so that the mechanical fatigue of a piston part is tested and evaluated more accurately.

Description

technical field [0001] The invention belongs to the technical field of engine component testing, in particular to a piston mechanical fatigue test device capable of applying lateral force. Background technique [0002] The piston is one of the key components that constitute the combustion chamber of the engine, and it bears the combined action of mechanical load and thermal load. With the continuous improvement of engine power density, the resulting problems of piston mechanical load and thermal load have become increasingly prominent. The main failure modes of the piston are the mechanical fatigue failure at the piston pin hole caused by the gas force and the piston skirt failure caused by the lateral force. In the early stage of mass production, the fatigue reliability test of components based on the component test bench is very important for product development. [0003] The existing test method fails to simulate the side pressure of the piston when it is working, and w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 张丽强侯晔星狄建兵阎玮王晓滕王昊
Owner CHINA NORTH ENGINE INST TIANJIN
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