Device for measuring the longitudinal displacement of the rail scourge railway

 

(57) Abstract:

The invention is intended for measuring the longitudinal displacement of the rail scourge railway track at its current renovation. The vehicle mounted proximity sensors for detecting the marks on the rail of the scourge and proximity sensor for detecting marks on the frame. Proximity sensors for detecting the marks on the rail of the scourge spaced along the vehicle and connected to a recording device through the respective counters and computing device. Contactless sensor for detecting marks on the frame is connected to a recording device via the pulse counter and the computing device. To the corresponding inputs of the pulse counter connected to the pulse generator. The technical result - the increase measurement accuracy. 2 Il.

The invention relates to a device for measuring the longitudinal displacements of rail lashes welded rail track and can be used in its current contents to determine the values of the displacements plots rail lashes in a longitudinal direction relative to the frames.

Known ustroystva resistance, made in the form of a segment of rail and fastened on the measured track section scourge with free change of its linear dimensions, while the reference resistance connected in series to the circuit section of rail scourge and a source of electrical current and is included in the double measuring bridge with locking device (SU 1710640 A1, E 01 35/00, 07.02.92 year).

This device does not move along the path and to determine the longitudinal movements of other portions of rail lashes either sequentially transfer and install it to the device on these sites, or to mount several of these devices along the rail lashes, which reduces the performance of the work, monitoring the displacements of rail lashes. In addition to this the device must meet the highest quality requirements for electrical contact of the device with rail whip, taking into account the influence on device reads electromagnetic fields (interference from the contact wire and the currents flowing in the rail scourge (traction current and Tiki signaling).

A device for measuring the longitudinal movement of the rails of the railway track containing transport sredska connection rails, the encoder is connected to the logger diode bridge and a threshold device (SU 1786220 A1, E 01 35/00, 07.01.93 year).

In the measurement process is determined by the distance between the joints of rail lashes and closest to the corresponding interface of the terminal is bolted connections lashes with pojelavam base. Use the device to determine the offset end sections of rail lashes, when this cannot be determined offset in the longitudinal direction of the path middle sections of rail lashes. In this case, the terminal-bolt connection is the label on the marker ("lighthouse" spała), which is determined by the offset end portion of the scourge, and the joint can be mistaken for the mark on the rail of the scourge.

In addition, this device has a number of disadvantages, namely: terminal rigidly connected to the rail, so prone to move with him when moving sleepers in ballast, low accuracy of measurements due to slippage of the sensor path along the rail, the possible error in the measurement due to the lack of gap junction rail lashes, it is important to consider the impact on the device reads electromagnetic fields (interference from the contact wire and the currents flowing in the rail scourge (although the sites to track the scourge (the length of the section, for example, 100 m between frames) along its entire length, improving the accuracy of measurement of progress rail stations scourge, the reduction of time for the measurement.

To achieve this technical result, the device for measuring the longitudinal displacement of the rail scourge railway track containing the vehicle, installed contactless sensor for detecting the marks on the rail of the scourge and proximity sensor for detecting marks on the frame, connected to the recording device equipped with installed on the vehicle the second proximity sensor for detecting the marks on the rail of the scourge to exclude encoder, counters, clock frequency, and the computing device, this proximity sensors for detecting the marks on the rail of the scourge spaced along the vehicle at a fixed distance and are connected to a recording device through the respective counters and computing device, and a proximity sensor for detecting marks on the frame is connected to a recording device via a pulse counter, one input of which is connected to the output of the first in the direction of movement t of the said generator is connected to the corresponding inputs of the counters.

In Fig. 1 shows a diagram of a device for measuring the longitudinal displacement of the rail scourge of railway. In Fig. 2 is a diagram of the locations of the sensors of this device relative to the marks on the rail of the scourge and the rapper.

In the operation of jointless tracks can occur progress of individual sections of rail lashes due to the redistribution of stresses in the magnitude and in sign, while the ends of the pipe can be fixed. The change of the stress state of jointless tracks can be identified by the change in the distance between the mark on the rail of the scourge and the mark on the reference mark in each control section. The marks on the rail of the scourge executes, for example, transverse stripes, applied bright oil paint on the top part of the foot rail of the lash marks on the frame are, for example, transverse stripes, applied bright oil paint on the pad "lighthouse" sleepers. Immediately after laying rail lashes they are mentioned labels so that the label on the rail of the scourge and the label on the lining were on the same line. As a reference point can be used "lighthouse" sleepers (for example, sleepers, located opposite the picket table is further fixed facilities around the way.

Device "lighthouse" sleepers must be performed in accordance with TU-2000. Terminals must be connected (or terminal is placed a special washer) so that the inner face does not touch the soles of rail scourge. Rubber Podilskyi gaskets should be replaced by a strip of low friction, such as plastic, that is, to "lighthouse" sleeper did not prevent longitudinal movement of the rail scourge.

Device for measuring the longitudinal displacement of the rail scourge welded rail track contains a contactless optical sensors 1, 2 and 3, mounted on the beam of the truck or on the frame rail of the vehicle, for example, car potenzmitel, and connected to the corresponding inputs of the former (4 pulses. Sensor 1 is the first in the direction of the working movement of the car-potenzmittel. Sensors 1 and 2 spaced along the carriage potenzmitel and are located at a fixed distance d from each other in the same plane. Sensors 1 and 2 are designed to detect the marks on the rail of the scourge and aimed at the upper part of the foot rail of the scourge, and the sensor 3 is designed to detect marks on the frame and is directed, for example, under the of tchekov 6 and/or 7 pulses. To the other inputs of the counters 6 and 7 of the pulse generator 5 is connected the clock frequency. On count 6 of the pulses are the pulses from the sensors 1 and 3 and the generator 5, and the counter 7 - from sensors 1 and 2 and the generator 5. The outputs of the counters 6 and 7 pulses are connected to the inputs of the computing device 8, the output of which is connected to a recording device that includes a monitor 9 and block 10 memory.

Shaper 4 pulse counters 6 and 7 of the pulse generator 5 clock frequency computing unit 8 and the recording device (monitor 9 and block 10 memory) mounted on the carriage-potenzmittel.

When driving car potenzmittel sensor 1 detects the mark on the upper part of the sole rail whip and sends a signal to the imaging unit 4 pulses, then the sensor 3 detects the mark on the frame (lining "lighthouse" sleepers) and sends a signal to the imaging unit 4 pulses, after which the same mark on the upper part of the sole rail scourge sensor 2 detects and sends a signal to the imaging unit 4 pulses.

The mark detection sensors 1, 2 and 3 as follows. Laser led each sensor irradiates the analyzed surface (the upper part of the foot rail of the rod or the properties of the optical signal and generates at the output a certain level of an electrical signal. The level of the electric signal at the output of the sensor depends on the reflectivity of the surface being examined (the lighter, the signal level above). Thus, the motion sensor light over the mark on the rail of the scourge and the reference point on the sensor output obtained an electrical impulse.

The implementation of sensors 1, 2 and 3 optical is one of the possible options for their implementation. In case the sensors 1, 2 and 3, for example, magnetic marks on the rail of the scourge and benchmarks applied using appropriate methods that reads these sensors.

With shaper 4 pulses required forms arrive at the counters 6 and 7 pulses which is supplied and the clock frequency of the generator 5. The counter 7 determines the number of pulses of the generator 5 for the time interval between pulses from sensor 1 and 2. The counter 6 determines the number of pulses of the generator 5 for the time interval between pulses from the sensor 1 and 3. The device 8 performs calculation of a value equal to the distance S (Fig. 2), by multiplying the known distance d on the ratio of the number of pulses from the counter 6 to the number of pulses from the counter 7. The value of S is the distance between the mark on the upper part of the sole rail scourge and meta-laying rail scourge or since the previous measurement, the provisions of sections rail scourge. This value shifts the section of rail scourge with the computing device 8 is displayed on the monitor 9 and stored in the memory block 10.

Instead shaper 4 pulses can be used in analog - to-digital converters at the inputs of the counters 6 and 7 pulses, and the output of the sensor 1 is connected with the corresponding inputs of the counters 6 and 7 pulses, the output of the sensor 3 is connected with a respective input of the counter 6 pulses, and the output of the sensor 2 is connected with a respective input of the counter 7 pulses.

The device provides a measurement of the longitudinal movements of sections of rail scourge relative to the fixed reference points along the railway track at a certain distance from each other, with great accuracy and little time spent on it, which gives the possibility to control for the stress state rail lashes welded railway track.

High accuracy and performance are achieved through the use of completely non-contact measurement system. The use of two sensors located at a fixed distance d from each other, to identify the marks on the rail of the scourge eliminates mehanicheskogo contactless control of the displacements of the individual rail sections of the scourge, located at a certain distance from each other relative to the fixed reference points, with a high degree of accuracy and with a small investment of time (compared to the closest analogue).

Device for measuring the longitudinal displacement of the rail scourge railway track containing the vehicle, installed contactless sensor for detecting the marks on the rail of the scourge and proximity sensor for detecting marks on the frame, connected to a recording device, characterized in that it has installed on the vehicle the second proximity sensor for detecting the marks on the rail of the scourge, the counters, the clock frequency and the computing device, with non-contact sensors for detecting the marks on the rail of the scourge spaced along the vehicle and connected to a recording device through the respective counters and computing device, and a proximity sensor for detecting marks on the frame is connected to a recording device via a pulse counter, one input of which is connected to the output of the first in the direction of movement of the vehicle the date lsof connected to the corresponding inputs of the counters.

 

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