Force measuring wheelset dynamic calibration test bench

Abstract

The invention relates to the technical field of rail transit. The invention discloses a dynamic calibration test bench for a force measuring wheel set. The power system is switched between the static calibration state and the dynamic calibration state. In the static calibration state, the power system can make the force measuring wheel set rotate to any angle for loading. In the dynamic calibration state, the power system can make the force measuring wheel set continuously Rotate at low speed to load. The invention can realize the switching between the dynamic loading test and the indexing loading test of the force measuring wheel set, and the calibration data obtained under the dynamic loading has better continuity, which makes the analysis of the final result more accurate, and at the same time retains the accuracy of the measurement in the static state. Graduation loading of force wheel set.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a dynamic calibration test bench for a force measuring wheelset. Background technique [0002] The force-measuring wheelset dynamic calibration test bench is the key equipment to ensure the accuracy of wheel-rail force measurement. The precise calibration of the force measuring wheel pair on the test bench can determine the sensitivity of the force measuring wheel pair and effectively eliminate the coupling interference of lateral and longitudinal forces. [0003] Most of the force-measuring wheelset dynamic calibration test benches in the prior art are composed of three major systems: mechanical system, hydraulic loading system, electric control and measurement and control system. The loading system includes any one or more of a longitudinal loading device, a lateral loading device, and a longitudinal loading device, and the hydraulic system is the power source of the load...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document CN102564690A discloses a new type of dynamic calibration test bench for force-measuring wheelsets. The dynamic calibration test bench for force-measuring wheelsets includes a calibration platform bearing base as the support base for other components, and is arranged on the calibration platform bearing base. The gantry assembly for fixedly installing the force-measuring wheel set, and the wheel-set clamping and limiting device arranged on the gantry assembly for positioning the force-measuring wheel set, the wheel-set clamping and limiting device has The mechanism for adjusting and positioning the force-measuring wheel set at least includes a loading gantry structure capable of steplessly positioning the force-measuring wheel set laterally along the bearing base of the calibration platform. In this patent, it is used to adjust and position the force-measuring wheel set The mechanism of the wheel set is manual, which has a great influence on the calibration results

Although the wheel set rotation indexing system in the prior art can make the wheel set rotate to any angle for loading, the calibration of the force-measuring wheel set can only be carried out in a static state, and its disadvantage is that the calibration data lacks continuity. Inaccurate analysis of the final results. In addition, the dynamic calibration test bench for force-measuring wheel sets in the above-mentioned prior art is bulky and complex in structure, resulting in low degree of automation of the device, low work efficiency, and cumbersome installation and disassembly procedures.

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