A device and method for testing axle weight change of a tamping stabilization vehicle

By installing pressure reducing valves, stop valves and pressure sensors on the working small axle box, combining displacement sensors to monitor the compression changes of rubber springs, and calculating the change of shaft weight in real time, the problem that the existing technology cannot monitor the changes of the working small axle weight in real time, and effective guidance on the compression force of the wheel axle is achieved.

CN111307258BActive Publication Date: 2025-03-25RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +3
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Patent Information

Application Number
CN201911256985.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-12-10
Publication Date
2025-03-25
Estimated Expiration
2039-12-10

AI Technical Summary

Technical Problem

The existing technology cannot monitor the changes in the working small axle weight in real time, which affects the guidance of the pressing force of the wheel axle.

Method used

A test device for tamping and stabilizing axle weight change is designed. By installing a pressure reducing valve at the total oil inlet of the supporting cylinder of the working small axle box, and setting a stop valve and pressure sensor at the oil inlet of each support cylinder, combining a displacement sensor to monitor the compression change of the rubber spring, and calculate the axle weight change value in real time.

Benefits of technology

Real-time monitoring of the changes in the axle weight of the working small car is achieved, and data is conducive to guiding the pressing force of the wheel shaft.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present invention relates to a testing device and method for the change of axle weight of a tamping stabilization vehicle. A pressure reducing valve is provided at the total oil inlet of the supporting oil cylinder of the working trolley axle box, a stop valve is provided at the oil inlet of each oil cylinder, and a pressure sensor is provided between the stop valve and each oil cylinder. The testing method comprises the following steps: (1) connecting the pressure oil circuit of the supporting oil cylinder, opening the stop valve, extending the piston rod and supporting the top of the axle box body; (2) measuring the gap between the bottom of the axle box body and the corresponding lower baffle plate, the left and right sides of the front axle are completely supported without gap, and the left and right sides of the rear axle have a gap of about 5 mm; (3) adjusting the hydraulic pressure through the pressure reducing valve, and observing the gap between the bottom of the axle box body and the lower baffle plate at the same time, until there is a gap between the bottom of the front axle box and the lower baffle plate so that a newspaper can pass smoothly; (4) locking the pressure reducing valve, closing the stop valve, and starting the test. The present invention can continuously monitor the change of axle weight of a tamping stabilization vehicle in real time during the tamping operation, which is beneficial to guiding the axle pressing force.
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