Wheel-rail force testing method for bogie of three-piece truck

Abstract

The invention discloses a wheel-rail force testing method for a bogie of a three-piece truck. The wheel-rail force testing method for the bogie of the three-piece truck comprises the steps of S1, selecting a plurality of strain measuring points, meeting preset conditions, of the bogie of the three-piece truck, S2, determining a bridging mode of the plurality of strain measuring points according to the main stress mode of each strain measuring point, S3, according to the bridging mode, assembling a bridge circuit, and acquiring the three-piece truck bogie after bridging, S4, carrying out a calibration coefficient test on the bogie of the three-piece truck after bridging, and S5, testing according to the calibration coefficient to obtain the wheel-rail force of the bogie of the three-piece truck.

Description

technical field [0001] The invention relates to the technical field of truck testing, in particular to a wheel-rail force testing method for a three-piece truck bogie. Background technique [0002] Due to the uneven geographical distribution of natural energy in my country, energy materials and product goods need to be transported across long distances. Railway freight has become the main force in my country's freight transportation due to its large volume and low pollution. In recent years, the speed of railway freight cars has continued to increase. The ever-increasing load has brought severe challenges to the service life of track, sleeper, roadbed and other line facilities. At the same time, the excessive axle load of trucks has aggravated the development of track geometric irregularities and further deteriorated the wheel-rail relationship, making railway trucks Safety issues such as derailment are prominent. In order to ensure the safety of railway freight transportatio...

AI Technical Summary

Problems solved by technology

Among them, the force-measuring rail can only be distributed intermittently in some sections of the train, so it also belongs to the intermittent measurement method of the wheel-rail force. Due to the long distance of railway freight transportation, it is impossible to obtain the force of the freight train when the freight train is running on the whole road through partial rail force measurement. The wheel-rail force information cannot provide real-time warning of the safety of freight trains; the force-measuring wheel set can realize continuous measurement of the wheel-rail force due to its vehicle-mounted characteristics, but when the force-measuring wheel set is manufactured, a single wheel set needs to be removed , to carry out a series of work such as grinding, patching, bridge assembly, and calibration. The production process requires high requirements, high production costs, and a long production cycle. At the same time, when the wheel tread is greatly worn, it needs to be re-calibrated. Trains are used in large quantities, so it is necessary to find a relatively low-cost, high-precision, and continuous measurement method for testing the wheel-rail force of railway wagons

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