Air spring torsion fatigue test method and device for track traffic

Abstract

The utility model relates to a method and device for the torsion fatigue test for air springs or similar products, which is used in the rail traffic by simulating the actual working state of the air springs through vertical, horizontal and torsion multidimensional load systems. The torsion fatigue tester comprises a frame, a worktable, and an electrical control cabinet; wherein, the frame is in the structure of framed with four columns; an adjustable shelf is arranged at the upper part of the frame; a wobbler mechanism is positioned on the lateral face of the worktable of the frame; the wobbler mechanism can designed into a crank and rocker mechanism, which can drive the worktable into circular arc rotation with the length of the swing arm as the radius; the air spring for testing is positioned between the worktable and the adjustable shelf; a trapezoid screw is arranged on the adjustable shelf for vertically regulating the position of the adjustable shelf; a horizontal adjusting screw is also positioned on the adjustable shelf. The lateral shift is regulated by the horizontal adjusting screw on the adjustable shelf; the swinging radius is adjusted by the length of the swinging arm, and the vibration frequency is regulated by a frequency converter.

Description

technical field [0001] The invention relates to a test method and device for an air spring for rail transit, in particular to a method and a device for performing vertical, transverse and torsional multi-dimensional loading torsion fatigue tests on an air spring for rail transit or similar products simultaneously. Background technique [0002] With the development of the economy, the speed of rail transportation is getting higher and higher, and people's requirements for the comfort and environmental quality of the vehicles are getting higher and higher. In order to meet the above requirements, air springs are generally installed on railway vehicles and urban rail vehicles as elastic elements for vibration and noise reduction. As an important vibration and noise reduction component, the air spring must be subjected to a fatigue test in order to ensure its performance. At present, the general air spring fatigue testing machine is to make the tested part produce linear recipr...

AI Technical Summary

Problems solved by technology

At present, the general air spring fatigue testing machine is to make the tested part produce linear reciprocating motion in the axial or lateral direction for fatigue test, but the air spring actually used in rail transportation equipment is vertical, lateral, torsional The force in multiple directions produces the torsional motion of deformation. Therefore, the existing testing machine cannot comprehensively and truly simulate the actual force and deformation state of the air spring during the fatigue test, and the accuracy of the test results is very low.

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