Device for measuring the wear of the side surface of the head rail rail

 

The invention relates to railway automation, and in particular to systems of diagnostics of technical condition of the railway track. Device for measuring the wear of the side surface of the rail head of the rail gauge is installed in the car-potenzmitel with running truck, equipped with unsprung frame. It contains the generator voltage, the eddy current sensor wear side surface of the rail head, mounted on the inner half of the surface controlled rail input connected to the generator output voltage, measuring amplifier, the input coupled to the output of the wear side surface of the rail head, and the processor node processing and registration information, an input connected to the output of the measuring amplifier. In the device there is also a movable platform mounted on the unsprung frame of the undercarriage of the car-potenzmittel can move along the frame in transverse relation to controlled rail direction, an actuator mounted on the unsprung frame of the undercarriage, the output link associated with the mobile platform, eddy current position sensor of the undercarriage in a rut, unny to the generator output voltage, comparison circuit, one input connected to the output of the position sensor of the undercarriage on the track, a source of reference voltage, an output connected to another input of the comparison circuit, a discrete power source of the actuator, the output connected to the input of the actuator, the control circuit, an input connected to the output of the comparison circuit, the output to the input of a discrete power source. Wear the lateral surface of the head rail is mounted on a movable platform. As a result, due to more accurate measurement of the amount of wear of the side surfaces of the heads of rails increases the safety of trains. 1 Il.

The invention relates to railway automation, and in particular to systems of diagnostics of technical condition of the railway track, and can be used for non-contact diagnostic control of the amount of wear of the side surface of the head rails of the railway track.

Known eddy current device for multiparameter control of technical condition of the railway track, including amount of wear of the side surface of the rail head, containing the generator voltage, virato is pancicii transverse displacements of the undercarriage of the car - potenzmittel in motion, due to short rough railroad tracks and the variability of the width of the railway track that leads to significant errors in the measurement of the amount of wear of the side surface of the rail head, as the output signal of the eddy current probe, which wear depends not only on the amount of wear of the rail head, but also on the relative positions of the transducer and the rail.

The closest entity to the claimed technical solution is the eddy current device for multiparameter monitoring of the routes containing the generator, eddy current transducer controlled parameter into an electrical signal, a processor node processing and registration information [2].

However, this device also does not provide a node compensate for lateral displacement of the undercarriage of the car-potenzmitel and rigidly installed on it relative to the transducer controlled rail that leads to significant error and reduce the accuracy of measurements for the same reason as in the device [1].

The technical result of the invention is to ensure the safety of trains due to more the CSOs technical solution is in a device for measuring the wear of the side surface of the rail head rail gauge installed in the car-potenzmitel with running truck, equipped with unsprung frame containing the generator voltage, the eddy current sensor wear side surface of the rail head, mounted on the inner half of the surface controlled rail input connected to the generator output voltage, measuring amplifier, the input coupled to the output of the wear side surface of the rail head, and the processor node processing and registration information, an input connected to the output of the measuring amplifier entered the mobile platform, mounted on the unsprung frame of the undercarriage of the car-potenzmittel can move along the frame in transverse relation to controlled rail direction, an actuator mounted on the unsprung frame of the undercarriage, the output link associated with the mobile platform, eddy current position sensor of the undercarriage in a track mounted on the moving platform above the outer edge surface of the controlled rail input connected to the generator output voltage, the circuit travunia, output connected to another input of the comparison circuit, a discrete power source of the actuator, the output connected to the input of the actuator, the control circuit, an input connected to the output of the comparison circuit, the output to the input of a discrete power source, and the wear of the side surface of the head rail is mounted on a movable platform.

The drawing shows a block diagram of the device. The device comprises a generator voltage 1, an eddy current probe 2 wear side surface of the rail head 7 mounted on the inner half of the surface of the controlled rail 7, the input connected to the generator output voltage 1, the measuring amplifier 3, an input connected to the output of the sensor wear 2 side surface of the rail head 7, and the processor unit 4 processing and registration information, an input connected to the output of the measuring amplifier 3, the movable platform 5 mounted on the unsprung frame 6 of the undercarriage of the car-potenzmittel can move along the frame 6 in the transverse in relation to controlled rail 7 direction, the actuator 8 mounted on the unsprung frame 6 of the undercarriage, the output element 9 spodvignul platform 5 on the outer edge surface of the controlled rail 7, input connected to the generator output voltage 1, the comparison circuit 11, one input connected to the output of the sensor 10 of the regulations of the undercarriage in a rut, reference voltage source 12, an output connected to another input of the comparison circuit 11, a discrete power source 13 of the actuator 8, the output connected to the input of the actuator 8, the control circuit 14, an input connected to the output of the comparison circuit 11, the output to the input of a discrete power source 13, and the sensor 2 wear side surface of the head rail is mounted on a movable platform 5.

The device operates as follows.

After installing the unsprung frame 6 of the undercarriage of the car-potenzmittel sensors 2 and 10 to the initial position so that the sensor 2 is positioned over the inner half of the surface of the controlled rail 7, and the sensor 10 over its outer edge, and the power device, the generator voltage 1 begins to produce a high-frequency voltage, which with its output simultaneously to the input of the sensor 2 wear side surface of the rail head 7 and to the input of the sensor 10 of the regulations of the undercarriage in a rut. In this issue around the sensors 2 and 10 of the electromagnetic field interacts with the visit from its geometric forms and sizes, and also on the relative positions of the sensors 2, 10 and rail 7. Electromagnetic field, eddy currents affects the sensors 2 and 10, inducing in them proportional to these currents EMF resulting from the outputs of the sensors 2 and 10 shows a corresponding output voltage. The output voltage from the sensor 2 - Uo symptom- comes from the sensor 2 to the input of the measuring amplifier 3 and then to the input of processor node 4 processing and registration information. The amplitude of this voltage depends in the initial position of the sensor 2 from the amount of wear, i.e., changing the shape and geometrical dimensions of the side surface of the rail head 7, as the sensor 2 is installed on its internal wear a half. When the transverse displacement of the undercarriage, and with it the sensor 2, on the track during the movement of the car-potenzmittel on the value, for examplex, the output voltage of this sensor is changed to some value Uxthat is the error of measurement of the amount of wear of the side surface of the rail head 7, as the resulting output voltage of the sensor 2 in this case is: Uo==Uo symptom+ Ux.

To eliminate their the chick 2 wear side surface of the rail head is not installed directly on the unsprung frame 6 of the undercarriage of the car - potenzmitel, and on a movable platform 5, which are mounted on the frame 6 can move in the transverse with respect to controlled rail 7 direction. On the same frame 6 has an Executive mechanism 8, for example, type “gear - rake” reversible electric gear. Rake mechanism 8 is connected with a movable platform 5 draft 9, which in this example, the output link mechanism 8. The power of the reversing drive is carried out from a discrete power source 13, having two States: on and off.

In the initial position, when the sensor 2 of the wear is on the inner half of the monitored rail 7, and the position sensor 10, respectively on its outer edge, i.e., whenx=0, the voltage supplied from the output of the sensor 10 to one input of the comparison circuit 11, is equal to the largest stable reference voltage Uopcoming to another input of the comparison circuit 11 from the source 12. As a result, the voltage at its output is zero, the supply voltage reverse drive of the actuator 8 is missing, the movable platform 5 remains in its original position. If after the start of movement of the carriage-potism is 6 with a movable platform 5, which is equipped with sensors 2 and 10, begin to move in the transverse in relation to controlled rail 7 direction, the voltage at the output of the sensor 10 of the regulations of the undercarriage in the track begins to change: increases if the offset of the undercarriage is in the outer side of the track, and decreases when moving the cart in the inner side of the track. As the voltage Uopthe reference-voltage source 12 remains unchanged, the output of the comparison circuit 11 produces the error signal, the polarity of which depends on the direction of the displacement of the undercarriage, and with it the sensor 10, its position in the track: positive signal at the offset of the undercarriage and the sensor 10 in the outer side of the gauge and negative when the offset of the undercarriage and the sensor 10 inside track. This signal is fed to the input of the control circuit 14, which includes discrete power source 13 of the actuator 8, and from this source the supply voltage of the appropriate polarity is fed to the input of the actuator 8. The polarity of this voltage is such that the reversible actuating device 8 starts to move the output element 9, and with it the movable platform 5 and installed it the sensors 2 and 10 in the side 2 of the initially established its initial position over a controlled rail 7, the error signal is reduced to zero, the discrete power source 13 enters the off state, the actuator 8 is stopped. This ensures that the compensation of the transverse displacements of the undercarriage and unchanging, originally installed position of the wear indicator 2 above controlled rail 7, the elimination of a significant error signal at the input of the processor node 4, and the improvement of measurement accuracy of the amount of wear of the side surface of the rail head 7.

Time constants of all parts of this monitoring position sensor 2 system and the sensitivity of electronic circuits compare 11 and control 14 is selected such that the dynamic deflection sensor 2 wear side surface of the rail head from the original position do not exceed permissible to achieve the required measurement accuracy.

Thus, the technical result, which is the purpose of this invention and consisting in increasing the accuracy of measurement of the magnitude of the lateral wear of the side surface of the head rail, this device is achieved by introducing a movable platform mounted on the unsprung frame of the undercarriage vaginalnye, an actuating mechanism mounted on the unsprung frame of the undercarriage, the output link associated with the mobile platform, eddy current position sensor of the undercarriage in the gauge installed on the mobile platform over the outer edge surface of the controlled rail input connected to the generator output voltage, the comparison circuit, one input connected to the output of the position sensor of the undercarriage in a rut, the source of reference voltage, an output connected to another input of the comparison circuit, a discrete power source of the actuator, the output connected to the input of the actuator, the control circuit input connected to the output of the comparison circuit, output to the input of a discrete power supply, and installation of the wear side surface of the rail head on the mobile platform.

Claims

Device for measuring the wear of the side surface of the rail head rail gauge installed in the car-potenzmitel with running truck, equipped with unsprung frame containing the generator voltage, the eddy current sensor wear side surface of the rail head mounted Nanya, the measuring amplifier input coupled to the output of the wear side surface of the rail head, and the processor node processing and registration information, an input connected to the output of the measuring amplifier, characterized in that, to improve measurement accuracy, it introduced a mobile platform mounted on the unsprung frame of the undercarriage of the car-potenzmittel can move along the frame in transverse relation to controlled rail direction, an actuator mounted on the unsprung frame of the undercarriage, the output link associated with the mobile platform, eddy current position sensor of the undercarriage in a rut, mounted on the mobile platform over the outer edge surface of the controlled rail input connected to the generator output voltage, a comparison circuit, one input connected to the output of the position sensor of the undercarriage on the track, a source of reference voltage, an output connected to another input of the comparison circuit, a discrete power source of the actuator, the output connected to the input of the actuator, the control circuit, an input connected to the output of the comparison circuit, the output is IGNOU platform.

 

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FIELD: railway transport; instrument technology.

SUBSTANCE: proposed wear checking system contains optical receiving projection system and converting-and-calculating unit. It includes also car position pickup and car counter whose outputs are connected to inputs to inputs of converting-ands-calculated unit. Optical receiving projection system consists of sets of stereo modules. Rigid structure of each module includes two CCD television cameras and lighting unit. Outputs of stereomodules are connected to corresponding inputs of converting-and-calculating unit. Stereomodules are rigidly installed relative to each other.

EFFECT: enlarged operating capabilities.

3 cl, 2 dwg

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