Method of and device for evaluating condition of rail track

FIELD: railway transport.

SUBSTANCE: method comes to measuring vertical and horizontal accelerations of meter body and those of left-hand and right-hand axle boxes of one of its wheelsets, determining values of measured accelerations and components of vertical accelerations of axle boxes for preset fixed running speed, and comparing obtained values with tolerable values and determining minimum value of maximum running speed of meter on particular section of rail track. Proposed device contains covered part transmitter, initial data packet shaper, accumulator, filter unit, operator's panel, acceleration meters, speed meter, board time system, scaling unit, path irregularities detector, wheel out-of-roundness detector, body vibration intensity detector, maximum speed meter and report date packet shaper. Group of inventions provides determination, with high accuracy and reliability, values of accelerations appearing in main members of meter-path system and obtaining complex characteristics of dynamic interaction of rail track and running train.

EFFECT: simple design of device, low cost.

3 cl, 2 dwg

 

The invention relates to the field of rail transport, and is intended for monitoring and evaluation of the condition of the railroad tracks.

There is a method of assessing the condition of the rail track and a device for its implementation, which produce prelaunch calibration of sensors for measuring parameters of the radius vectors from the tricks of sensors to points lying on the upper and inner side surfaces of the rail heads, and memorize the calibration data, during the movement of the car-potenzmittel cyclically measure in real time the current values of the traversed path, the current values of the power factors of the dynamic interaction between rolling stock and rail track, the current values of the height of the irregularities on the running surface of the rails, the current values of the radii-vectors, the current values of the orientation angles of the car-potenzmittel in a geographic coordinate system and accelerations in the direction of the axes of the associated coordinate system car potenzmittel obtained current values memorize, calculate the geometrical parameters of rail track, analyze and evaluate its condition and remember the results. (Patent RF №2114950, CL 61 K 9/08, E 01 35/00, 1997).

This method of assessment track is implemented by a device containing two sensors in rtically accelerations Buchs, installed on buildings books one of the wheel pairs in nikolovo part of the car-potenzmittel, two proximity sensor is an optical wavelength range of the measurement of vertical and horizontal movement of the rails relative to the body, installed on the outer surface of the bottom of the car-potenzmittel, two proximity sensor is an optical wavelength range of the measurement gauge installed on unsprung frame, a wheeled truck in nikolovo part of the car-potenzmittel, two sensor vertical displacement books on body installed on the car body-potenzmittel over-values of the pair of wheels in nikolovo parts, sensor of the traversed path, mounted on the housing of one of the books of the measuring wheel pairs and mounted on the side of the car-potenzmittel control computer system, including personal electronic computer (PC). (Patent RF №2114950, CL 61 K 9/08, E 01 35/00, 1997).

The disadvantage of this method of assessment of rail track and devices, it implements, is the lack of accuracy and reliability control, so as to measure only the deviations of geometrical parameters of the track from the set, and the number and type of measured deviations are determined by the number of sensors and placing them on the car-put the meter, as well as the presence of methodical errors due to low rigidity of the car potenzmittel when the control parameters of the track with the location of the sensors on a long basis.

In addition, the disadvantage of this method of assessment of railway track and a device which implements a synchronous reading of data from sensors on the principle of his actions are asynchronous, resulting in periodic foray phase error.

There is a method of assessing the condition of the track, whereby during movement of the meter provide a quantized measurement of the current values of the traversed path, asynchronously to which the measured current values of the vertical and transverse horizontal accelerations of the body of the meter, and the left and right Buchs one of the wheel pairs, the values obtained memorize. (Patent RF №2074829, CL 61 K 9/08, E 01 35/00, 1997).

A device for assessing the condition of the track containing the sensor of the traversed path, the driver package source data, the output of which is connected to the first input drive, the first output of which is connected to the input of the filter unit and the second output is the output of the device, the operator, the output of which is connected to the first input of the shaper original data and a second input of the drive. (Patent RF №2074829, CL 61 is 9/08, E 01 35/00, 1997).

The disadvantage of this method of assessing the condition of the track by measuring the geometrical parameters of the track and their deviations from the specified values, is the lack of reliability. The disadvantage of this device that implements the known method are its high complexity and cost.

Method of assessment the track and the device for its realization in patent No. 2074829 on community tasks and basic characteristics, is the most loved and chosen as the prototype for both objects of the invention.

The technical result of the invention is to provide a method for condition assessment of railway track, allowing the motion of the meter with a speed up to 250 km/h to determine with high accuracy and reliability values of the accelerations that occur in the basic elements of the system the measuring path and obtain an overall characteristics of the dynamic interaction between rail track and rolling stock.

The technical result of the creation of a device that implements the proposed method are its relative simplicity and low cost.

The essence of the invention lies in the fact that according to the method of assessment of rail track during movement of the meter provide a quantized measurement of the current values passed the wow path, asynchronously to which the measured current values of the vertical and transverse horizontal accelerations of the body of the meter, and the left and right Buchs one of the wheel pairs, the values obtained remember, synchronously with the quantization of the path determines the speed of movement of the probe along the path is determined for a predetermined fixed speed values measured accelerations and memorize them, determine to a predetermined fixed speed values of the vertical accelerations books as a result of the imbalance and circular roundness of the wheels and as a result of exposure to the wheels vertical rail irregularities path defined for fixed speed values of acceleration is compared with the valid and determine the minimum speed limit movement meter on a particular stretch of track.

The invention consists also in the fact that in a device for assessing the condition of the track containing the sensor of the traversed path, the driver package source data, the output of which is connected to the first input drive, the first output of which is connected to the input of the filter unit and the second output is the output of the device, the operator, the output of which is connected to the first input of the shaper original data and a second input, however, is Italia, introduced three measures of acceleration, speed detector, the system Board time, the scaler, the determinant of the degree of roughness of the road, the determinant of the degree of roundness of the wheels, the determinant of the intensity of oscillations of a body, the determinant of the speed limit and driver packages reporting data, and the sensor output of the traversed path connected to the first input of the speed detector, the first input of the scaler and the inputs of the first, second and third measuring accelerations, the outputs of which are connected respectively with the second, third and fourth inputs of the block scaling, the output of the speed detector is connected to the fifth input of the scaler and the second input of the shaper package of inputs, the third input of which connected to the output of the scaler, the output of the operator is connected to the sixth input of the scaler and to the first inputs of the determinant of the degree of roughness of the road, the determinant of the degree of roundness of the wheels, the determinant of the intensity oscillations of the body and the determinant of the speed limit, the second inputs of which are connected with the first output drive, and outputs connected respectively to the first, second, third and fourth inputs of the driver packages reporting data, the output of which is connected with the third input buffer, the output of the filter block to connect the eh with the third inputs of the determinant of the degree of roughness of the road and the determinant of the degree of roundness of the wheels, the output of the system Board time is connected to the second input of the speed detector, the fourth input of the shaper of packets of source data and the third input of the determinant of the intensity oscillations of the body, while the first, second and third measuring accelerations are installed respectively on the left and right dont forget a pair of wheels and the body of the meter and the sensor distance traveled installed on PTC site wheelset.

The invention is illustrated by drawings.

1 shows a functional block diagram of the device for estimating the state of the track;

figure 2 shows a functional block diagram of the measuring accelerations of the device for estimating the state of the track.

Figure 1 is labeled sensor 1 of the traversed path, the imaging unit 2 packets of source data, a storage unit 3, unit 4 filters, the operator controller 5, the probes 6, 7 and 8 of the accelerations, the determinant of a 9 speed system 10 flight time, block 11 zoom keys 12 of the degree of roughness of the road, the keys 13 of the degree of roundness of the wheels, the keys 14 of the intensity oscillations of the body, the determinant of a 15 speed limit and the driver 16 packages reporting data.

Figure 2 indicated the accelerometers 17, 18, 19 and 20, ADC (analog-to-digital converters) 21, 22, 23 and 24, the identifier 25 average values, the determinant of 26 extreme values, interf Isny Converter 27, the generator 28 clock pulses and the synchronizer 29.

Your assessment of rail track (1) the output of the sensor 1 of the traversed path connected to the first input of the determinant 9 speed, the first input unit 11 scaling and inputs of the first 6, second 7 and third 8 meters accelerations, the outputs of which are connected respectively with the second, third and fourth inputs of the block 11 scaling the output of the determinant 9 speed is connected to the fifth input unit 11 scale and with a second input of the shaper 2 package of inputs, the third input connected to the output of block 11 scaling.

The output of shaper 2 packets of source data connected to the first input of the drive 3, the first output of which is connected to the input unit 4 filters, and the second output is an output device. The output of the operator controller 5 is connected to the first input of the shaper 2 packets of source data from a second input drive 3, with the sixth input unit 11 scaling and with the first input keys 12 of the degree of roughness of the path identifier 13 of the degree of roundness of the wheels, the keys 14 of the intensity oscillations of the body and keys 15 maximum speed, a second input which is connected to the first output of the memory 3, and outputs connected respectively to the first, second, third and fourth inputs of the former (16 packets is tchernykh data.

The output of driver 16 packages reporting data is connected to the third input of the drive 3, the output of block 4 filters connected to the third inputs of the keys 12 of the degree of roughness of the road and the determinant of 13 the degree of roundness of the wheels, the output of the system 10 on-Board time is connected with the second input keys 9 speed, the fourth input of the shaper 2 packets of source data and the third input keys 14 of the intensity fluctuations in the body.

The first 6, the second 7 and third 8 meters accelerations are installed respectively on the left and right dont forget a pair of wheels and the body of the meter and the sensor 1 of the traversed path is installed on PTC site wheelset.

In each of the measuring devices 6, 7 and 8 acceleration (figure 2) outputs of the first 17 and second 18, 19 third and fourth 20 accelerometers are connected respectively to the first inputs of the first 21, second 22, third 23 and fourth 24 ADC, the outputs of which are combined and connected with the first inputs of the determinant 25 averages and determinant 26 extreme values, the outputs of which are connected respectively with the first and second inputs of the interface Converter 27, the first and second outputs of which are connected respectively to the second inputs of the determinant 25 averages and determinant 26 extreme values, the third inputs of which are connected with the first output of the synchronizer 29, second, t the th, the fourth and fifth outputs of which are connected respectively to the second inputs of the first 21, second 22, third 23 and fourth 24 ADC, the third input of which is connected to the sixth output of the synchronizer 29, an input connected to the output of the generator 28 clock pulses, a third input interface Converter 27 is supplied the output signal from the sensor 1 of the traversed path, and a third output interface Converter 27 is the output of the meter accelerations.

The first 17 and second 18 accelerometers have high sensitivity, 19 and the third and fourth 20 is low, the sensitivity axis of the first 17 and 19 third accelerometers are directed vertically, and the second 18 and fourth 20 horizontally and transversely to the track.

Device for assessing the condition of the rail track works as follows.

During the movement of the meter pan the wheels and the body are experiencing acceleration, which are perceived first - third meters 6-8 accelerations. The sensor 1 of the traversed path (DPP) perceives the rotation of the pair of wheels of the meter in such a way that after passing through the axis of the wheel pair of a certain quantum of the way it generates the next pulse.

Each of 6-8 meters accelerations contains accelerometers 17-20, analog signals from outputs of which are received at the first inputs of high-speed ADC 21-24. The generator 28 that is preset pulse operates at a frequency of about 100 kHz. The synchronizer 29 contains, for example, a counter, a decoder and a group of logic elements. It periodically generates a sequence of control pulses.

The pulse from the sixth output of the synchronizer 29 ADC 21-24 produce memorizing the values of analog signals from the outputs of the accelerometers 17-20, respectively, and convert them into digital code. Further, the synchronizer 29 produces consistently the second-fifth output pulse survey ADC 21-24, respectively, on which the digitized values of the measured accelerations consistently arrive at the first inputs of the 25 secondary determinant and the determinant 26 extreme values at the same time, where recorded in the memory by the pulses coming in on their third inputs from the first output of the synchronizer 29.

The above steps are performed cyclically in the intervals between the pulses coming from the DPP 1 and the third input interface Converter 27. With the arrival of the next pulse interface Converter 27 generates the first output request signal by which the identifier 25 averages performs its objective function over the sample values received from the ADC 21-24 for the last time interval between pulses from the PLT 1, then passes the four defined average values at the first input interface p is OBRAZOVATEL 27. In this way the front-end Converter 27 communicates with the keys 26 of extreme values. The obtained information is output for each of the 6-8 meters accelerations, she served on the second to fourth input unit 11 of the scale. At the first input unit 11 scaling receives pulses from the sensor 1 of the traversed path, and on his fifth and sixth inputs - information on current and fixed values of velocity, respectively. Keys 9 speed determines the current value of the speed of movement of the probe along the track for the duration of the last period of time between successive pulses from the output PLT 1, using the output information of the system 10 on-Board time.

Unit 11 scaling determines for each quantum path the current value of the scale factor as a function of the current and fixed values of speed of movement of the probe along the way, and then performs the multiplication of extreme and averaged over the quantum path values at the above-mentioned scale factor. The data output unit 11 scaling arrives at the shaper 2 data packets, which generates data packets, the duration and effectiveness of which is determined based on the values of the current time and the current speed on the criteria that are sent from the controller 5 of the operator.

The generated data packets are sequentially received in the drive 3, where remembered. The contents of the drive 3 can be read in an external device for processing results of the trip meter. The proposed device allows for the analysis of the data obtained during the trip.

In this case, the next data packet from the memory 3 is supplied to the unit 4 filters, which defines the parameters of its harmonic components, with the argument set of quanta way. The next data packet from the memory 3 is supplied also to the second inputs of the determinants 12-15 degree of roughness of the road, the degree of roundness of the wheels of the meter, the intensity of fluctuations in the body and speed limit, and on their first inputs - information processing modes, constant values and a priori data. The parameters of the harmonic components of the measured data are used to determine the degree of roughness of the road and the degree of roundness of the wheels.

The final results of the determinants 12-15 parameters are received at the respective inputs of the driver 16 packages reporting data and further into the drive 3, from the second output of which on command from the remote control 5 operator they can be issued to an external device.

The proposed method of assessing the condition of the track allows the movement of the meter is about speed up to 250 km/h to determine with high accuracy and reliability values of accelerations, emerging in the basic elements of the system the measuring path, and obtain an overall characteristics of the dynamic interaction between rail track and rolling stock, with the device that implements the proposed method is relatively simple and has low cost.

The simplicity of the device, its relatively low cost and the ability for a long time to work in offline mode allows with it a rapid assessment of rail track and rolling stock in the country.

The above leads to the practical applicability of the invention.

1. Method of assessment the track, whereby during movement of the meter provide a quantized measurement of the current values of the traversed path, asynchronously to which the measured current values of the vertical and transverse horizontal accelerations of the body of the meter, and the left and right Buchs one of the wheel pairs, the values obtained remember, characterized in that simultaneously with the quantization of the path determines the speed of movement of the probe along the path is determined for a predetermined fixed speed values measured accelerations and memorize them, determine to a predetermined fixed speed values of the vertical accelerations books as financial p is tat imbalance and circular roundness of the wheels and as a result of exposure to the wheels vertical unevenness of the track, defined for fixed speed values of acceleration is compared with the valid and specify the minimum value of the maximum velocity meter in the specific area of the track.

2. Device for assessing the condition of the track containing the sensor of the traversed path, the driver package source data, the output of which is connected to the first input drive, the first output of which is connected to the input of the filter unit and the second output is the output of the device, the operator, the output of which is connected to the first input of the shaper original data and a second input drive, characterized in that it introduced three measures of acceleration, speed detector, the system Board time, the scaler, the determinant of the degree of roughness of the road, the determinant of the degree of roundness of the wheels, the determinant of the intensity of oscillations of a body, the determinant of the speed limit and driver packages reporting data, and the sensor output of the traversed path connected to the first input of the speed detector, the first input of the scaler and the inputs of the first, second and third measuring accelerations, the outputs of which are connected respectively with the second, third and fourth inputs of the block scaling, the output of the speed detector is connected to the fifth input of the unit of the scale is berbania and with the second input of the shaper data package, a third input connected to the output of the scaler, the output of the operator is connected to the sixth input of the scaler and to the first inputs of the determinant of the degree of roughness of the road, the determinant of the degree of roundness of the wheels, the determinant of the intensity oscillations of the body and the determinant of the speed limit, the second inputs of which are connected with the first output drive, and outputs connected respectively to the first, second, third and fourth inputs of the driver packages reporting data, the output of which is connected with the third input buffer, the output of the filter block is connected to third inputs of the determinant of the degree of roughness of the road and the determinant of the degree of roundness of the wheels, the system output Board time is connected with the second the input of the speed detector, the fourth input of the shaper of packets of source data and the third input of the determinant of the intensity oscillations of the body, while the first, second and third measuring accelerations are installed respectively on the left and right dont forget a pair of wheels and the body of the meter and the sensor distance traveled installed on PTC site wheelset.

3. Device for assessing the condition of the rail track according to claim 2, characterized in that each measuring accelerations contains at least four accelerometers and at least four ADC, the determinant of average values, the determinant of e is stremline values, interface Converter, clock and synchronizer, and the outputs of the first, second, third and fourth accelerometers are connected respectively to the first inputs of the first, second, third and fourth ADC whose outputs are combined and connected with the first inputs of the determinant of the average values and the determinant of extreme values, the outputs of which are connected respectively with the first and second inputs of the interface Converter, the first and second outputs of which are connected respectively with the second inputs of the determinant of the average values and the determinant of extreme values, the third inputs of which are connected with the first output of the synchronizer, second, third, fourth and fifth outputs of which are connected respectively with the second inputs of the first, second, third and fourth ADC, the third input of which is connected to the sixth output of the synchronizer, the input connected to the output of the clock generator pulses, the third input interface Converter is designed to receive the signal from the sensor output of the traversed path, and a third output interface Converter is the output of the meter accelerations, while the first and second accelerometers have high sensitivity, while the third and fourth low, the sensitivity axis of the first and third accelerometers e.g. the go vertically, and the second and fourth horizontally and transversely to the track.



 

Same patents:

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SUBSTANCE: invention relates to method of grading of existing bed of railway in which cables and/or pipes are laid beyond the limits of rails, and to laser measuring device to read bed profile. According to proposed method, operator removes material of bed by sucking through definite steps along bed to form pits or cross trenches at each side of track, and using laser camera, checks profile near pit and position of buried cables or pipes and stores obtained information. Then, using information kept in memory, operator controls device for mechanical digging of material from both sides of track without risk of damage to buried cables or pipes and profile of graded bed. Laser measuring device is mounted on railway motor car with cross guide beam 12 and carriage with laser camera which can be moved along guide beam. Laser camera is pointed with its lens downwards to read distance from ground, being connected with computer to record position of bogie on rails and distance from camera to ground.

EFFECT: provision of safe, quick and cheap method of railway bed grading with use of laser measuring device.

6 cl, 6 dwg

FIELD: railway transport; permanent way testing facilities.

SUBSTANCE: method of pulling contact system cable comes to the following: each rail 6 is read off by means of distance pickup 16 placed over rail and moved continuously in longitudinal direction of track and scanning in plane 20 passing square to longitudinal direction of track. Problem points of measurement 25 on rail defining geometry of switch are recorded as measurement values in polar system of coordinates. Polar coordinates for measurement values are converted into Cartesian coordinates and information is recorded in memory at continuous measurements of distance by means of measuring wheel after which lateral section for switch 1 is calculated basing on recorded measurement values. Actual measurement values are compared in definite points of measurement 25 with preset values of at least two of enumerated parameters kept in memory, namely, width of clearance between counter-rail and running rail, through clearance or state of tongue as to its wear, minimum width between edge of guide rail and side edge of running rail in curve, width of gauge and/or distance between counter-rails or guide surfaces and deviation of obtained values from preset values. In device for noncontact measurement of lateral section or rail-to-rail distance of track, each pickup 16 is arranged in area over corresponding rail 6 being essentially laser scanner 17 for reading problem points of measurement 25 defining geometry of switch which is made for reciprocation at angle of scanning (α).

EFFECT: provision of quick and accurate determination and evaluation of measurands of vital importance for switch.

4 cl, 6 dwg

FIELD: railway transport; track maintenance.

SUBSTANCE: geometry of track is measured by using high-accuracy measuring circuit with two mechanically coupled test trucks forming transport and mechanically coupled test trucks forming transport and mechanical part of measuring system and including covered distance meter and truck tilting level sensors relative to horizon and at least one radiating mark (optical radiation source) rigidly installed on first test truck in direction of movement and providing pressing of flange of wheel to inner head of base rail, and optical electronic receiving-and-analyzing system rigidly secured on second truck. Second truck is double axle, with flanges of corresponding wheelsets pressed to inner surface of head of base rail, thus forming measuring base identifying position of base rail in points of contact of corresponding wheelsets.

EFFECT: improved accuracy of measurement at simplification of process.

4 cl, 5 dwg

FIELD: railway transport; permanent way.

SUBSTANCE: proposed device for checking condition of switch tongue includes movable and fixed members in form of tongue includes movable and fixed members in form of tongue and ties with adjoining and second stock rails secured on ties and it contains one tongue position pickup relative to adjoining stock rail designed for shunting track circuits of automatic block system. Device is furnished with stop shoe secured on fixed member of track and designed for limiting displacement of tongue along adjoining stock rail. Tongue position pickup is made in form of stationary and movable contacts. Used as stationary contact is said stop shoe which is electrically connected with adjoining stock rail and is electrically insulated from second stock rail. Movable contact is electrically connected with second stock rail being electrically insulated from adjoining stock rail and installed for power interaction with tongue and forming electric connection with stationary contact.

EFFECT: improved safety of traffic, enlarged functional capabilities of device.

5 cl, 3 dwg

FIELD: railway transport.

SUBSTANCE: invention can be used for diagnosing condition of rails using combined ultrasonic and magnetic nondestructive testing devices of higher resolving power. Proposed rail track mobile testing device includes vehicle on frame of which flaw detector bogie is mounted with system for pneumatic and manual lifting of bogie I to traveling position. Tracking ski secured on frame of flaw detector bogie is provided with ultrasonic testing converters unit. Mobile device is provides also with pneumatic system for forced pressing of flaw detector bogie to rails made for adjusting force of pressing in vertical axis and with lateral stabilizing device consisting of roller carriage with flexible damping support. Series magnetizing coils of magnetic control device whose inductive sensor is installed after converters unit in rear part of tracing ski in direction of movement of flaw detector bogie, said coils being fitted on axles of wheel-steps of flaw detector bogie and connected to each other. Said magnetizing coils are installed on bearings and are arranged I protective hood secured on frame of flat detector bogie. Housing of converters unit, protective hood and frame of flaw detector bogie are made on nonmagnetic material. Wheels of flaw detector bogie are installed for independent rotation.

EFFECT: increased resolving power at diagnosing condition of rails, increased dynamic stability of device in movement along rails, reduced mass and dimensional characteristics.

2 cl, 1 dwg

FIELD: railway transport.

SUBSTANCE: method comes to measuring vertical and horizontal accelerations of meter body and those of left-hand and right-hand axle boxes of one of its wheelsets, determining values of measured accelerations and components of vertical accelerations of axle boxes for preset fixed running speed, and comparing obtained values with tolerable values and determining minimum value of maximum running speed of meter on particular section of rail track. Proposed device contains covered part transmitter, initial data packet shaper, accumulator, filter unit, operator's panel, acceleration meters, speed meter, board time system, scaling unit, path irregularities detector, wheel out-of-roundness detector, body vibration intensity detector, maximum speed meter and report date packet shaper. Group of inventions provides determination, with high accuracy and reliability, values of accelerations appearing in main members of meter-path system and obtaining complex characteristics of dynamic interaction of rail track and running train.

EFFECT: simple design of device, low cost.

3 cl, 2 dwg

FIELD: railway transport; permanent way.

SUBSTANCE: invention relates to methods of checking and forecasting condition of rail track. According to proposed method, running course of body of track-testing car is measured by means of inertia navigational system installed under pivot of test bogie, and running hunting angle of test bogie relative to body is measured by means of angular displacement transducer. Then, using axle box-rail transducers, distance from flanges of corresponding wheels of bogie to rail heads are measured. Basing on obtained information , running courses of rail lines are calculated as running course of body minus running hunting angle of test bogie relative to body minus running angle of parallel misalignment of flanges of wheelsets of test bogie and heads of rail lines. Then running values of horizontal irregularities of rail lines are found as product of bogie base by deflection of running course of rail lines from running averaged courses of rail lines on bogie base calculated from courses of rail lines. Running radii of curvature of rail lines are found by dividing bogie base by measured increment of course angles of rail lines on bogie base.

EFFECT: provision of chordless (single point) method of checking leveling of rail lines.

3 dwg

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