Method of track diagnostics
SUBSTANCE: invention relates to railway transport and may be used in complex diagnostics of track, for example, in rail detector cars. Proposed method consists in that measurement intervals are synchronised with rolling stock speed, interfering instruments are spaced apart and/or scattered in time, instantaneous measurement results of all instruments are delayed with due allowance for relative position and displacement speed so that said instruments are related to unique cross sections of the track, revealed defect is displayed in due time, current track section is displayed in 3D images as well as defects revealed in track transverse sections by all instruments. Fast decision about track conditions are made by one operator proceeding from analysis of produced image.
EFFECT: higher quality of diagnostics.
The invention relates to measuring devices to check the status of the railroad tracks with application to display multiple physical quantities General of the screen and can be used in complex diagnostics track a variety of devices, for example, in the cars of the flaw.
Railways are complex engineering objects with increased responsibility for transportation safety. Objects of the control track are:
- rails - for the presence of internal defects, damages heads, and blades, changing the geometry of the track, etc.;
- sleepers - for their landing, destruction, etc.;
- underlying cushion track - on the violation of density, emergence holes, cavities, etc.;
- contact power supply network for the sagging wires, the condition of the supporting elements, and so forth
To control these elements are used ultrasonic, magnetic, laser, radar, optical, mechanical and other non-destructive control methods and corresponding devices. Each of the measurement devices includes means for measuring, processing, storage and display of results. Monitoring the status of the track should not significantly affect the transfer and, which leads to the need to create high-speed, universal measuring means, carrying out a comprehensive condition monitoring of railway track. Auto diagnostic tools typically do not provide the desired level of confidence, result in a high probability of "false alarms" and (or) skip defect. But today the highest reliability, provide automated methods based on the interaction of the measuring devices with the operator. Thus there are two methods of evaluation of results:
- operational - allowing you to quickly detect defects in the measurement process and adequately respond to the critical condition of railway track;
- laboratory involves storing the results of measurements of the track and their further processing.
A known method for the diagnosis of the track , suggesting ultrasonic flaw detection rails, consisting in the emission of the ULTRASONIC probe signals, the reception of the reflected signals, detection of defects, saving, displaying and analie. For the operational analysis of the results of the soundings used:
1. A-scan - displays the time dependence of the amplitudes of the signals received during a single sensing.
2. B-scan display head of the dependence of the amplitudes of the signals, reflected from defects obtained along the length of the rail.
3. Displaying the detected defects on the transverse and longitudinal sections of the rail.
The first two ways of mapping is not obvious, tedious for the perception of requiring a highly skilled operator. The third method is more intuitive, but requires the simultaneous observation of four projections of the rail at the sounding of the two rails at the same time.
A known method for the diagnosis of the track , also involving the use of ULTRASONIC methods of non-destructive testing using multichannel schemes, which further complicates the operational condition monitoring of railway track.
The common disadvantage of the methods  and  is limited functionality for the diagnosis of the track - only ULTRASONIC rail flaw detection.
Closest to the claimed is a method for diagnosing the track , which consists in the fact that the instruments measure different parameters of the track mounted on the vehicle, which moves along the rail track, measure the current position and the moving speed of the devices, these devices periodically measure the parameters of the track, detect defects and determine their coordinates relative to the corresponding device, save the measurement results quickly and after okonchan the I survey section of rail track analyze them and decide on the condition of railway track.
The disadvantage of this method is that a variety of measuring instruments installed on the vehicle, are considered separately. However, the measurement results have unity on the location, interaction, speed of movement and the objects of study. The recognition of this unity when installing, the organization's measurement and analysis of the results will improve the quality of diagnostics of railway track.
The Union of the set of measuring equipment in the car detector allows to diagnose the track faster and cheaper. When setting up and organization of the measuring instruments should take into account their mutual influence, in particular electromagnetic compatibility. Periodicity of measurement devices must be selected from the speed of the vehicle to achieve a desired resolution. Online condition monitoring of railway track in the presence of a large number of diverse instrumentation requires either a large number of operators (in the way  assumes the presence of 5 operators), or the interpretation of the results have to spend after the end of the measurement, which reduces the efficiency of control. In addition, defects in different elements of the railway are often associated with each other, and some of the defects found what are the different methods. In these conditions it is expedient to reduce the measurements of all sensors together, display, and analyze them together.
The ability of the proposed method are most easily be traced back to the multi-channel ULTRASONIC flaw detector , figure 1. To reduce interference and structural features of the meter electroacoustic transducers (there's)located on the wheelset, 1-1, which is essentially independent devices, are directed in different directions - while moving in the opposite direction, perpendicular to the surface, etc. as a result, for example, hole bolting rails will first discovered the front of the ULTRASONIC transducer aimed in the direction of travel in position a, after reflection from the base of the rail, then this object will be detected by the same ULTRASONIC transducer in position b. Then the respective ULTRASONIC transducers detects reflection c, d and e. For conventional processing, display and analysis of the measurement results refer to different moments in time, and the operator will receive the image Fig.1-2, from which it is difficult to understand that the detected reflectors refer to the same object. The inventive method assumes that all measurements are delayed so that the detected reflectors has been reduced to a single cross-section of the rail. So about the time, sources of reflections a, b, c, d and e will be combined, 1 to 3 that will allow you to easily determine the nature of the source of the reflection.
Note that combining the results of measurements of electroacoustic transducers requires consideration of the speed of their movement. The movement speed also affects the frequency of soundings rail to provide the desired resolution of the diagnostic.
The problem solved by the claimed method, is to improve the quality of diagnosis rail track through appropriate collaboration measuring and combining results from different instruments, display them in a convenient form and joint analysis.
Significant differences of the proposed method are the following:
synchronization periods of the measuring devices with the speed of movement of the vehicle allows to achieve the desired resolution for each of the devices, and also to eliminate redundancy at low speeds.
In the prototype, the issue of synchronization of the measurements is not considered.
The diversity of spatial and (or) time of operation of the apparatus allows to eliminate or reduce their influence. Space diversity involves the installation of devices and related sensors at distances or directions, smart is superior to their influence on each other. For example, in the ULTRASONIC flaw detection direction of the piezoelectric transducers are selected so as to avoid (reduce) interference and diffraction of ULTRASONIC signals. GPR, magnetic and ULTRASONIC meters can greatly affect each other, so that in addition to spatial diversity to solve electromagnetic compatibility it is necessary to resort to the temporary separation of the torque sensing at the expense of the corresponding centralized synchronization.
In the prototype does not cover the compatibility of the devices.
Delay instantaneous measurements of all devices taking into account the relative position and speed of the devices so that they belonged to one and the same transverse cross-sections of railway track, allows you to get information about the defects detected in the specified section of all devices. Spatial combining this information allows you to analyze the integral information about defects and to identify the relationship between them.
In the prototype, the joint analysis of information about defects is not considered.
Operational alarm on detection of a defect, for example, audio, allows you to attract the operator's attention to any event, as long observation of the results of measurements leads to rapid fatigue of the operator is RA and the ability to skip defect.
In the prototype, there is no such option.
View 3D image of the current segment of rail track and defects found in its cross sections all devices, allows you to combine all the measurements in a comprehensible to the operator of the image.
In the prototype assumes control of the operator for the results of measurements of each device separately.
A prompt decision on the condition of railway track take one operator on the basis of the analysis of the specified image.
In the prototype assumes the use of 5 operators.
Thus, the inventive method involves centralized management of complex instrumentation and joint processing of the results compared with the prototype and provides better diagnostics of railway track.
The inventive method are illustrated in the following graphics:
Figure 1 - diagram of the detection object in the ULTRASONIC sensing rail, where there electroacoustic transducers multi-channel ULTRASONIC flaw detector 1.
Figure 2 - structural diagram of the device that implements the inventive method, where:
1 - multi-channel ULTRASONIC flaw detector,
2 - magnetic measuring defects in rails,
3 - subsurface GPR,
4 - sensor current position,
5 is a transmitting / receiving device
6 - server,
7 mass storage device
8 - monitor.
Figure 2-3d image of a segment of the track, where
9 is a defect detected ULTRASONIC flaw detector,
10 - subsurface gully detected by GPR.
Consider the implementation of the proposed method on the example of diagnosing the track using the flaw detector car, containing 2, multi-channel ULTRASONIC flaw detector 1, the magnetic gauge rails 2, subsurface GPR 3 and the sensor current position 4 with the corresponding receiving-transmitting devices (SRD) 5. Each diagnostic instrument aims to measure the relevant parameters of the railroad, and is created by the respective organization or group of experts who solve the problem of the Autonomous relevant measurements, state estimation for a given parameter, detection, display and diagnosis of the defect. To solve this problem, they have their own technical means of measurement, evaluation and display of results. The objective of the proposed method is to ensure their integrated use. Each of the measuring devices 1, 2 and 3 involves the development of probing signals, receiving and processing responses and contains the computer. All computers through a serial interface connected to the server 5, provided with an external storage device the PTO 6 database of railway track and monitor 7. The database contains information about the geometry of the track, the location of joints, switches and the like, and non-critical defects found in previous measurements. Electroacoustic transducers (PUR 5) multi-channel ULTRASONIC flaw detector 1 is installed in the rear part of the car detector in the hanging block. The magnetic coil of the meter 2 (PUR 5) are arranged on the axis of the wheels of the car of the instrument in its anterior part. Antenna subsurface GPR 3 (PUR 5) are arranged in the front part of the car detector. This arrangement foam 5 is selected on the basis of electromagnetic compatibility, i.e. reduce their interaction. When installing the measured parameters relative position of the foam 5. Sensor current position 4 contains the GPS equipment and the measuring path "between the wheels" with the appropriate foam 5. Pre-positioning of the carriage of the instrument carries out the GPS equipment. Precise georeferencing is performed periodically in the server 5, for example, by detecting electromagnetic meter 2 characteristic points, in particular bolting rails, and comparing them with a database of rail track. Between exact bindings measurement position is "on wheels". According to the current location in the server 5 calculates the moving speed of the carriage of the instrument.
When moving the research Institute of the car detector in the server 5 determines the periodicity of formation of probing signals in each of the measuring devices 1-3 based on the requirements for their resolution and speed of the car detector. In the server 6 form a trigger signal corresponding measuring devices with the possibility of interaction of the probe or response signals. Each of the measuring devices 1-3 on a signal from the server 6 generates the excitation signals, receives and processes the feedback received. When defects are detected track and are defined by their coordinates relative to the foam 5. The information obtained, including the signals received by each PPU 5, transmitted to the server 6, where it is stored, and the information about the defects linked to the absolute coordinates of the track and associated with the cross sections of the track. Thus, information about the defect is delayed in the server. Data about defects detected on the part of railroad, all gauges, formed after working on this piece all the measuring devices 1-3. If defective, the sound signal that attracts the operator's attention to the display device. Information about defects is displayed on the monitor 7, which allows you to watch 3D picture, figure 3, the current double-strand cut the track with a mark of defects found all the measuring devices. The screen can also display the coordinates of the characteristics of the defect and other information. Figure 3 VI is but that crack 8 in the rail head, the detected ultrasonic flaw detector, may be caused by a pothole 9 in the cushion track. Thus, the inventive method allows a single operator to quickly observe, assess defects and to establish the relationship between them.
Thus, the inventive method allows online one operator to perform the monitoring, analysis and evaluation of the condition of the track, which improves the quality of diagnosis, and therefore, the safety of Railways.
Sources of information
1. Markov, A.A., Shpagin D.A. Ultrasonic rail flaw detection. 2nd ed. revised and enlarged extra - SPb: Education and culture, 2008.
2. Patent RU 2227911. The way multi-channel ULTRASONIC inspection of rails.
3. EN 2066645. MOBILE CONTROL COMPUTER DIAGNOSTIC SYSTEM.
Method for the diagnosis of the track, namely, that the devices of measurement of parameters of the track mounted on the vehicle, which moves along the rail track, measure the current position and the moving speed of the devices, which periodically measure the parameters of the track, detect defects and determine their coordinates relative to the corresponding device, save the measurement results, promptly after the end of the survey participation is ka track analyze them and decide on the condition of railway track, characterized in that the periods of measurement devices synchronize with the speed of movement of the vehicle, carry spatial and (or) time, interacting devices, delay instantaneous measurements of all devices taking into account the relative position and speed of the devices so that they belonged to one and the same transverse cross-sections of railway track, promptly indicate a defect is detected, the display in the form of 3D images of the current segment of rail track and the defects found in its cross sections of all the devices, an operational decision about the condition of the track is made by one operator on the basis of the analysis of the specified image.
SUBSTANCE: in the method, while determining the number of services, service quality control signals are measured and generated separately from service consumption control signals in order to determine quality of services for a defined period of time. The range of variation of quality signals is divided into sections with given borders. While varying signals with time, the time parts at which they stay on each section relative the entire time for using the services are determined and stored. The sum of products of parts with assigned coefficients, different for different sections of the range of variation of signals, is calculated, and the sum of products is multiplied by the number of services used and then stored.
EFFECT: method of controlling utilities by carrying out extra operations for processing quality signals of utilities.
SUBSTANCE: proposed machine comprises frame resting on bogies, tie tamping device and lifting-straightening device, measuring tool and platform coupled with said platform, test bogie and video cameras to observe track top structure. Test bogie is equipped with controller, track geometry pickup, equipment to process global navigation satellite system signals, optoelectronic measurement system and video data processing unit. Said optoelectronic system comprises, at least, one radiation source, data processing unit and photo receiver. Reference mark makes radiation source. Said reference mark comprises modulated LED, LED control circuit, photo receiver and self-contained power source. Photo receiver comprises two receive-and-analyse systems, inclination transducer and control module including data signal processor and photo receiver. One on the inputs of data processing unit is connected with inclination pickup, second input is connected with receive-and-analyse systems and third input is connected with data signal processor.
EFFECT: higher accuracy of track location measurement.
6 cl, 4 dwg
FIELD: measurement equipment.
SUBSTANCE: invention refers to the field of measurement equipment and can be used for control of the geometrical dimensions of the railroad gage. The unit contains a meter of the geometrical dimensions and control equipment that are mounted on the vehicle support. Laser devices are located above the corresponding rails of the road. The unit is equipped with a support swivel drive group in the vertical plane. The support is made with a swivel load-bearing part connected with the help of a pin to its fixed part. The record and satellite image processor, the image send group and the display are connected to the microprocessor that is installed in the vehicle cabin, for example, of the diesel locomotive. The navigation aerial for determination of location of the laser devices from the satellite is installed on the support.
EFFECT: extension of the functionality related to determination of the geometrical dimensions of the gage in front of the transportation vehicle thus ensuring its travel safety.
2 cl, 11 dwg
FIELD: railroad transport.
SUBSTANCE: invention refers to the field of railroad transport and is meant for control and evaluation of the railroad condition. The mobile workstation for diagnosis of the railroad consists of a self-propelled vehicle that has a width meter and a special device for measuring the section parameters of the railroad that through the corresponding signal processing modules are connected to the microprocessor. The target location device is connected to the microprocessor. The mobile workstation is equipped with the remote control unit that is connected through the communications link to the receiver wired up to the microprocessor and performing the controlling function in relation to the self-propelling vehicle. The self-propelling vehicle is composed of two carts, and the second cart is additionally equipped with the vertical straight scale and navigating receiver, and the first cart has a point-contact laser-optical device. The cart frames are equipped with docking devices for splitting and connection of the carts. Each of these devices is made in the form of a cup and a rod that are separately installed on the corresponding frames of the carts.
EFFECT: improvement of the accuracy of profile measurement along the rising and dropping sites.
3 cl, 20 dwg
FIELD: railway transport.
SUBSTANCE: this invention covers gauges for check of railroad bed condition and can be applied for detection and check of corrosion damage level of operated rails by ultrasonic scanning. The method is as follows: ultrasonic signals directed into the rail base are emitted from the rail rolling surface; and the signals reflected from the rail base are received. Amplitude envelop of the received ultrasonic signals is calculated during movement along the rail according to which corrosion damage level of the rail base is determined.
EFFECT: early determination of danger areas of rail base.
2 cl, 1 dwg
FIELD: railway transport.
SUBSTANCE: this invention covers rail voltage monitoring system. This system includes a sensor unit which additionally includes a sensor to be installed directly on a rail length. The proper sensor includes a flat metal pad and at least one or more sensors installed at one side of such pad. Usually, the sensors are strain gages installed on the pad in a specific pre-set configuration. At least one data collection module is electrically connected to the sensor, and a data processing module receives and processes data collected by data collection module.
EFFECT: high measuring accuracy of rail operational characteristics.
29 cl, 10 dwg
FIELD: machine building.
SUBSTANCE: device and method is intended to be used at measurement of curvature through certain base length of object (2t), for example per 1 running metre and maximum curvature through the whole length of the object. The basis of measurements is proximity sensors. Condition of measurements is straight-line movement of the object. There can be deviations at movement in the form of transverse offsets and vibration. In order to relate measurements to length and to compose the object curvature chart, speed sensor is used. Enough number of sensors will be log2(L/t)+2 sensors. They are located at distances of (t, t, 2t, 4t, 8t, 16t,…) between each other, where t - half of the base distance for curvature measurement.
EFFECT: device allows reducing the number of involved sensors at curvature measurement.
2 cl, 7 dwg
SUBSTANCE: invention relates to railway diagnostics complexes. Proposed complex comprises control and measuring complex and onboard computation complex. Said control and measuring complex comprises system to control and estimate track geometrical parameters, system for contactless control of rails geometry, high-speed rail flaw detection system, track defect visual detection system, train dynamics control system, speed georadar control system, structure approach speed control system, ACS and telemetry state high-speed control system, contact circuit state control system, analog radio communication parameter control system and digital radio communication parameter control system. Proposed complex is equipped with multiple-discrete track and geophysical track coordinate synchroniser connected with each control and measuring system. Onboard computation complex incorporates universal system for visualisation of synchronised data of all control and measuring systems equipped with integral interface, system with combination analysis and railway structure state forecast, as well as control system provided with communication with integrated data space of railway infrastructure.
EFFECT: higher speed and validity of measurements.
SUBSTANCE: invention relates to railway transport, particularly, to auxiliary railway equipment. Proposed complex comprises removable rail carriage accommodating positioning device, track measuring equipment to measure currents track coordinates, track width, mutual position of rails in height, system to analyse track parameters, data transfer interface to transmit data to external data base computer via communication adapter, automatic device to measure curvature of rails in horizontal plane, and programmable analyser. The latter consists of measurement results registrator, device to detect the departure of track parameters from preset ones, in-situ digital indication and graphical visualisation unit that allows audio comments on every mark, and track parameters memory.
EFFECT: higher efficiency of diagnostics.
SUBSTANCE: invention relates to railroad transport. Servo drive centering device of mobile flaw detector along rail lengthwise axis comprises detectors furnished with self-centering device. The latter is made up of permanent magnets arranged on faces of every detector on crosswise displacement carriages articulated with detectors and arranged on guide bars rigidly coupled with load bearing bar of servo drive system suspension.
EFFECT: higher quality of rail state control, possibility for flaw detection at high speeds.
SUBSTANCE: proposed system comprises data collection device mounted at rolling stock head and consisting of microcontroller whereto connected are transmitter, receiver and data output unit, transceiver module arranged at rolling stock tail and comprising transmitter and receiver, transmitter being connected via intercom line with data collection receiver. Measuring module is arranged on controlled track section. Said measuring module consists of receiver with its output connected to power accumulator, transmitter with its input connected to microcontroller output with its input connected via interface with vibration and temperature pickups. Vibration pickups are secured to rails or sleepers of controlled track section. Temperature pickups are secured to controlled track section rails. Power accumulator output is connected to microcontroller and transmitter supply inputs.
EFFECT: higher validity of control.
FIELD: railway transport; measuring facilities.
SUBSTANCE: invention relates to special purpose devices for measuring separate geometric parameters of reinforced concrete ties, i.e. propelling and canting of rail flats on reinforced concrete ties. Proposed device contains housing 1 with fitted-on transport handle 2, right-hand support 3 and left-hand support 4. First support screw 5 and second support screw 6 are installed on right-hand support 3, third support screw 7 and fourth support screw 8 are installed on left-hand support 4, right-hand catcher 9 and left-hand catcher 10 are installed on ends of housing 1, sensor 11 is secured on first support screw 5. Housing 1 carries also right-hand orientation handle 13 with pushbutton 15 and left-hand orientation handle 14. Base 16 is fastened in central part of housing 1, controller 17 and supply compartment 18 being secured on base 16. Device for measuring rail flat canting contains housing 1 with fitted-on transport handle 2, right-hand support 3 and left-hand support 4. First support screw 5 and second support screw 6 are installed on right-hand support 3. And third support screw 7 and fourth support screw 8 are installed on left0hand support 4. Right-hand catcher 9 and left-hand catcher 10 are installed on ends of housing 1, first sensor 11 is secured on first support screw 5, and second sensor 19 is installed on fourth support screw 8. Housing 1 carries right-hand orientation handle 13 with pushbutton 15, and left-hand orientation handle 14. Base 16 with fitted-on controller 17 and supply compartment 18 is secured in central part of housing 1. Moreover, support 21 is connected to housing 1 through vertical rods in central part.
EFFECT: improved efficiency of measurements, increased accuracy and provision of operative measurement of parameters under checking.
3 cl, 2 dwg
FIELD: railway transport.
SUBSTANCE: invention relates to method of diagnosing condition of railway and street car tracks. Proposed device contains detectors designed for measuring deviation of gauge and position of track by level of sags, humps and cavities connected with contact members. Device contains also vertical parallel, inner and outer posts, rollers made for interaction with side working inner surfaces of side track, rollers made for interaction with upper working surfaces of rail track, jambs some ends of which are connected with roller races and others, with corresponding posts. One of detectors is made in form of dial indicator, being arranged on one of inner posts and coupled with roller-type contact elements made for interaction with side working inner surfaces of track. Rod of said indicator is in contact with upper end of other inner post. Springs are placed between inner post. Springs are placed between inner posts in upper and lower parts, mounted on upper surface of two pairs of bosses fitted on one axle. Holes are made in inner posts. Axle with bushing is placed in inner posts. Bracket is connected by one end to bushing, and other end of bracket serves for fastening to floor of test car. Second detector is made in form of metric rule secured to inner post, and two pointers secured on upper end faces of outer posts. Two pairs of slots are made on outer posts. Slots are arranged on one axis and they accommodate pins installed for movement. Pins are provided with stops from outer and inner parts of posts.
EFFECT: improved reliability of device, reduced cost, possibility of reading results of measuring directly from detectors.
FIELD: railway transport; permanent way.
SUBSTANCE: invention relates to method of noncontact inspection of profile of ballast base passing square to longitudinal direction of track. Inspection is carried out together with recording of deviation of track in level and in position. Depending on recorded defects as to level (a) and profile of ballast base 13 obtained for said level, amount of crushed stone for lifting track 4 to preset level and uniform ballasting is determined. To find amount of crushed stone required for ballast base 12, recorded profile of ballast base 13 is applied to preset profile of cross section 14.
EFFECT: improved ballasting of track.
3 cl, 4 dwg
FIELD: railway transport; permanent way.
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