Adjustable adaptive crankshaft bending fatigue test device

A technology of bending fatigue and test equipment, which is applied in the direction of measuring equipment, testing of mechanical components, testing of machine/structural components, etc., can solve the problems of low fatigue test frequency, single load action, high equipment function requirements, etc., and achieve short test period , load control is real, and the effect of low work cost

Inactive Publication Date: 2017-09-19
CHINA NORTH ENGINE INST TIANJIN
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Generally, crankshaft components have a low frequency of fatigue tests and a single load action, requiring a special hydraulic testing machine with high requirements for equipment functions.

Method used

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  • Adjustable adaptive crankshaft bending fatigue test device

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Embodiment Construction

[0026] 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.

[0027] 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 ...

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Abstract

The invention provides an adjustable adaptive crankshaft bending fatigue test device, which includes a trigger flange, a flexible bending plate, a main journal opening pressuring head, a rod journal support and a main journal support. The main journal support and the rod journal support are mounted vertically on a T-shaped groove of a test platform, and are respectively provided with a main journal support hole and a rod journal support hole. A first main journal and a rod journal of a test crankshaft unit are mounted in the main journal support hole and the rod journal support hole respectively through a first main journal adjustment tile and a rod journal adjustment tile. The main journal opening pressure head is mounted at a second main journal through a second main journal adjustment tile. The trigger flange is located above the main journal opening pressure head. The flexible bending plate is connected between the trigger flange and the main journal opening pressure head. The device of the invention meets different journal crankshaft bending fatigue test requirements and is suitable for working needs of a general high frequency tester, and the test crankshaft unit is adaptively bendable or deformable.

Description

technical field [0001] The invention belongs to the technical field of crankshaft fatigue testing, in particular to an adjustable self-adaptive crankshaft bending fatigue testing device. Background technique [0002] As the main part of the engine power output, the crankshaft is subjected to the periodic action of bending, torsion, vibration and other complex forces during work, and its structural strength and fatigue reliability are very important. In particular, the stress level at the fillet of the crankshaft main journal and the connecting rod journal is relatively high, which is mainly due to the bending deformation of the crankshaft under the action of the explosion pressure in the cylinder. Cracking failures tend to occur at fillets under alternating loads. [0003] In the product development stage, in order to test the structural strength and fatigue reliability of the crankshaft, component fatigue tests will be carried out on the basis of calculation and simulation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
CPCG01M13/027
Inventor 狄建兵侯晔星张丽强王延荣闫玮马宁王昊王龙韬
Owner CHINA NORTH ENGINE INST TIANJIN
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