SU1305532A1 - Method of determining parameters of wheel pair-railway track interaction - Google Patents

Abstract

The invention relates to a measurement technique and can be used to measure the parameters of the interaction of a wheel pair with a rail track. The aim of the invention is to extend the functionality by determining the angle between the axis of the wheelset and the longitudinal axis of the rail track. On. the neck of the rails 1 and 2 paste the load cells and include them in bridge circuits. Strain gages are glued so that they are in the same plane A-A, perpendicular to the rail track (O 0). The drive, wheelset, and rail track are brought into contact. Registering the two signals from sensors pasted on rails 1 and 2, which carry information about the vertical forces acting on rails 1 and 2 as the wheelset passes along them. A fit time shift is recorded between the two measured signals and the angle I is determined; to the axis of the wheel pair 7 and the longitudinal axis (O 0) of the track, according to the formula arctg.ut V / L, where V is the speed of the wheel pair 7; L is the width of a rail track. 4 il. and iS cl

Description

The invention relates to a measurement technique and can be used to measure the parameters of the interaction of a wheel pair with a rail track. .

The purpose of the invention is to expand the functionality by determining the angle between the axis of the wheelset and the longitudinal axis of the rail track,

FIG. 1 shows a pair of wheels on the rail; in fig. 2 - placement of sensors on rail necks; in fig. 3 - recorded signals; in fig. 4 shows the sensor activation circuits.

The method of determining the parameters of the interaction of a wheel pair with a rail track is carried out as follows (again.

On the neck of each rail 1 and 2 paste the strain gauges 3 - 6 (Fig. 2), include them in the bridge circuit (Fig. 4). The load cells 3-6 are glued so that they are in the same plane A-A, perpendicular to the longitudinal axis of the rail track O о. The pair of wheels is brought into interaction. 7 and the rail track, which includes rails 1 and 2. Two signals are recorded (Fig. 3) from sensors pasted on rails 1 and 2. These signals carry information about the vertical forces acting on rails 1 and 2 as the wheelset passes through them, register time shift ut between

do the axis of the wheelset 7 and the longitudinal axis of the rail track by the formula

| 3 arctg ----,

where V is the speed of the wheel

pairs 7;

L is the width of a rail track. The method allows you to simultaneously determine three parameters of the interaction of the wheel set with the rail track: the vertical forces acting on each rail, and the angle between the axis of the wheel pair and the longitudinal axis of the rail track.

Claims (1)

Invention Formula The method of determining the parameters of the interaction of a wheel pair with a rail track, which consists in placing sensors on the neck of one of the rails, causing the interaction of the wheel pair and the rail track at the location of the sensors and measuring the signal from the sensors Yu. In order to expand the functionality, sensors are placed on the neck of the second rail in a plane passing through the sensors on the first rail and perpendicular to the axis of the rail track, the signal from the sensors placed on the second rail is measured, the shift is recorded over time between two measured signals and the data obtained are used to determine the parameters of the interaction of the wheel pair with the rail track. 9II Fig2 Fig.Z Figm