SU1651633A1 - Method of determining parameters interaction of wheel pair with rail track - 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 purpose of the invention is to improve the measurement accuracy. On the neck of a single rail, sensors are placed in the same plane, to measure the vertical and horizontal forces, the wheelset and the rail track at the location of the sensors are interacted, and the signals from the sensors, as well as the time shift between their signals, are measured. The data obtained is used to determine the interaction parameters. 2 hp ff. 6 Il.

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 improve the measurement accuracy.

Fig. 1 shows a wheel pair and a rail wheel, front view; in fig. 2 is the same, top view; FIG. 3 shows the layout of the sensors on the rail neck; figure 4 is a graph of the recorded signals; Figures 5 and 6 show sensor activation circuits.

The method consists in placing sensors 2-7 on the neck of one rail 1 for measuring vertical and horizontal forces. (Sensors 2, 3. 6, 7 for measuring vertical forces, sensors 4 and 5 for measuring horizontal forces). The sensors are placed in the same plane, including them in the bridge circuit. The wheelset 8 and the rail track (rails 1 and 9) at the sensor location are brought into interaction. Signals from sensors 2-7 are recorded. installed for determining the horizontal forces Yr and the vertical forces Q in one section of the rail 1, when the wheelset passes along the rails 1 and 9. I register the time shift Dg between these signals.

The angle of the running wheel on the rail is determined by the formula

arctga - (rTnytg / 3 where d is the preemption of the crest of the wheel on the rail, is determined from the V Dx relation;

D t is the time shift between the measured signals;

V is the speed of movement of the wheel pair 8;

g - wheel radius;

fi - the angle of inclination of the working surface of the wheel flange (wheel pair 8);

n is the distance from the rail head level from the point of pressing the ridge to the rail.

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The guide force of the rail 1 to the wheel flange 10 in contact with the rail is determined by the formula

Y - G

1 and costa

where Yr is the horizontal force from the wheel to the rail;

and, - the angle of the running of the wheel on the rail.

The time shift between the two measured signals to determine the horizontal and vertical forces is determined simultaneously, and the sensors measuring the vertical and horizontal forces are placed in one section of the normal plane on the same rail, which gives an increase in the measurement accuracy.

Claims (1)

1. 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 rail to measure vertical sips, causes the wheel pair and rail track to interact at the sensor location and measure signals from sensors differing from In order to increase the accuracy of the measurements, sensors on the same rail place sensors on the same rail in the same plane to measure the body force, when measuring signals from sensors, measure the time shift between the signals and use The obtained data to determine the interaction parameters. 2, the method according to claim. Characterized in that the angle of incidence of the wheel on the rail is determined by the formula. arctga d jr + njtp where o is the anticipation of the incidence of the ridge of the forest on the rail, the nd formula is defined: d ° «V At; At-time shift between two measured signals from sensors registering vertical and horizontal forces from the wheel to the rail; V is the speed of the wheelset; g - wheel radius; n is the distance from the level of the rail head to the point where the wheel flange is pressed against the rail; 0a angle of runaway wheels on the rail; R - the angle of inclination of the working surface of the ridge to the horizon (for locomotives 65 °, for cars 60 °), 3, the method according to claim 1, wherein 5, in that the guide force, not the wheel flange from the rail, is determined by the formula V - g- cosn cos a where Yr is the horizontal force from the wheel on rail 0; and - the angle of the runaway wheel on the rail. 1 Have , FIG.