A device for testing a stress state of an e-shaped elastic strip of a railroad fastener

Abstract

A device for testing a stress state of an e-shaped elastic strip of a railroad fastener is disclosed. The device comprises a jack, a data collecting processor, a data displaying screen, a stress holder with which a middle leg of an e-shaped elastic strip to be tested are assembled, an electronic displacement meter used for measuring a vertical displacement of a toe end of the e-shaped elastic strip to be tested and a strain transducer adhered to the surface of the e-shaped elastic strip to be tested. The data collecting processor and the data displaying screen are separately fixed to the stress holder. The jack is disposed at a bottom plate of the stress holder. The top of an ejector rod of the jack is provided with a force transducer propped against the bottom surface of the toe end of the e-shaped elastic strip to be tested. The device can effectively and rapidly test the stress state of the e-shaped elastic strip on site, a testing result is further compared with theoretical analysis results and standards, and the stress state of the e-shaped elastic strip can be evaluated.

Description

technical field [0001] The invention relates to a force testing device, in particular to a device for testing the force state of e-shaped spring bars of railway fasteners. Background technique [0002] The e-type clip is widely used in railways and urban rail transit. It has the advantages of fewer parts, eliminating the need for re-tightening and oiling of traditional fastener bolts, and greatly reducing the maintenance and repair workload. However, it also exposed the problems of insufficient buckle pressure and large dispersion during its use, especially in some areas where a large number of e-shaped clips even broke, which posed a great threat to the operation of the train, so it is necessary to Test it out. [0003] The traditional method of testing the pressure of the e-clip buckle is to use a hydraulic universal servo testing machine for loading experiments, which must be carried out in a large laboratory, and it is difficult to carry out on-site testing in practice....

AI Technical Summary

Problems solved by technology

However, it also exposed the problems of insufficient buckle pressure and large dispersion during its use, especially in some areas where a large number of e-shaped clips even broke, which posed a great threat to the operation of the train, so it is necessary to test it

[0003] The traditional method of testing the pressure of the e-clip buckle is to use a hydraulic universal servo testing machine for loading experiments, which must be carried out in a large laboratory, and it is difficult to conduct on-site testing in practice

Furthermore, traditional methods cannot be used to carry out buckle pressure tests on the e-type clips at the railway site, let alone test the stress state of the e-type clips, so that it is impossible to find the cause of the damage and fracture of the e-type clips, and it is impossible to Accurate evaluation of the force state of the e-clip

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