Multi-station elastic fatigue test tooling

Abstract

The invention discloses a multi-station elastic fatigue test tool comprising a pedestal, a mould, a loading mechanism and a plurality of loading blocks. The plurality of moulds are arranged on the pedesetal in a surrounding manner; and clamping stations are formed on the moulds. The plurality of loading blocks are in one-to-one correspondence with the moulds. The loading mechanism drives the loading blocks to vibrate towards the corresponding clamping stations in a sine wave manner. With the multi-station elastic fatigue test tool, fatigue testing can be carried out on a plurality of to-be-tested elastic pieces; and compared with the prior art using the traditional tool for testing, the disclosed tool enables a stable test effect to be realized.

Description

technical field [0001] The invention relates to a pressure test tool, in particular to a multi-station elastic fatigue test tool. Background technique [0002] The most important part of the track structure is the fastener system between the rail and the sleeper. The rail fastener can not only alleviate the impact damage of the train to the track structure, but also ensure the reliable connection between the rail and the sleeper. It can ensure the stability of the track structure. Plays an important role in terms of sex and reliability. The elastic bar is a key component in the fastener system, which can undergo elastic deformation to absorb the energy generated by the vibration of the rail while ensuring its fastening force. If the fastener spring breaks due to fatigue damage, the fastener system will lose its function of holding the rail, which may cause the train to derail or overturn, causing heavy loss of life and property. Therefore, fatigue performance is the most c...

AI Technical Summary

Problems solved by technology

The known displacement control type or electro-hydraulic servo type fatigue testing machine adopts the single downward pressure force application method, the test efficiency is very low, and a lot of test resources are wasted. When the test volume increases, only The number of equipment can be increased to meet the test requirements, which ultimately leads to an increase in cost and personnel

[0004] The principle of the traditional spring fatigue testing machine is that the eccentric wheel rotates, and the amplitude is realized by adjusting the position of the center of the circle. The single station has a large vibration during the test, and the vibration frequency of the workpiece is up to 16Hz. Due to the large centrifugal force generated by the eccentricity, the amplitude adjustment range is low, and the amplitude adjustment Need to calibrate

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