General-purpose coordinate device for manual defect detector
FIELD: measurement equipment.
SUBSTANCE: invention relates to non-destructive testing devices and is intended to determine coordinates of an inspection sensor when searching defects. A general-purpose coordinate device for a manual defect detector is arranged on a test object and includes at least one inspection sensor, and it is made in the form of a flat frame of an open type, the free ends of which are installed with a possibility of being turned on supporting fasteners fixed on the test object. With that, on the frame there are two encoders arranged, each of which is provided with a cable connected to a cassette holder located between the encoders, in which a cassette is installed and provided with at least one inspection sensor with a possibility of its movement along the test object surface.
EFFECT: improving object test reliability, as well as reducing labour input for use of a coordinate device.
The invention relates to a device for non-destructive testing in various fields of engineering and is intended for determining the coordinates of the sensor in the process of finding defects on the local portion of the surface of the testing object, such as housings gearboxes, piping, parts, or subassemblies marine or aviation equipment, etc.
One of the areas of application of the proposed device is its use in measuring devices to check the status of the railway, particularly in the hand-held flaw detectors intended for selective control of defects along the entire cross section of the rail.
The claimed technical solution relates to local non-destructive testing and can be used for inspection of welded joints, frogs, and to Refine data about the defects in the secondary control after flaw detector car or railcar.
A device flaw detector for manual sampling of individual sections of the rail head to detect defects fatigue of origin and assess their real size (http://avionica-ndt.com/prod/a-17.pdf: flaw AVIKON-17, see Annex No. 1).
The known device is mounted on the head rail and provide control and logging only the head of the rail, which prevents the OS�of carrying out control of the entire rail section and greatly reduces its scope.
As a prototype adopted the coordinate device designed to track and monitor the status of the sensor on the plane, made in the form of a mechanical system of two-dimensional coordinate reference type "hand", in the axis of rotation of which is embedded encoders. The device is equipped with two-coordinate positioning system and carries out the movement of the piezoelectric transducer (probe) on the tread surface, on the lateral surfaces of the head and neck of the rail, and also the feather of the sole, which allows scanning with the desired step and remember real-time depth coordinates of the detected defects with the construction of a tomographic image (http://www.votum.ru/ud4_ru/strel/; "Slider M1, see Annex No. 2).
The disadvantage of the prototype is that it is necessary to rearrange and to re-calibrate during control of each plane of the object of control.
For example, when working on the rail, the device should be repositioned to re-calibrate and five times on different planes of rail: the plane of the ski, the side surface of the rail head, the neck rail, feathers soles.
The device of the two-dimensional coordinate reference can work in a prescribed position on the same plane. If the test object contains multiple planes, each plane required per�stop device and a new calibration which leads to inaccuracies coordination, the mismatch of coordinate points in one cross section and increases the complexity and reduces the reliability of operation of the coordinate device.
The task of the claimed technical solution is to increase the reliability of the control object, reduce labor intensity, and the use of pointing devices.
The task is achieved due to the fact that the universal pointing device for handheld flaw detector, placed on the object and containing at least one monitoring sensor, made in the form of a flat frame of the open type, the free ends of which are mounted for rotation on the supporting clamps fixed on the test object, wherein the frame has two rotary encoders, each equipped with a cable connected to the cassette holder disposed between the encoders in which the cassette is placed inside at least one sensor control, with the possibility of moving along the surface of the testing object.
The inventive pointing device for handheld flaw detector is versatile because it can be applied to control both flat and various three-dimensional objects, including curved surfaces, which enhances its range of PR�changes.
The presence of flat open frame type, installed on the test object can be rotated, allows local control of the object, not only on one surface of the object, but on several surfaces surround the object of control, that is, one installation of the support clamps flat on the rotary frame object allows to control all the surface of the test object, for example, of the rail, which increases the positional accuracy of testing results to a specific cross section of the object, increases the reliability objective of document control throughout the cross section of the object, based on the results of measurements on the individual surfaces of the object of control. Flat rotary coordinate frame of the device mounted on the rail in an inclined position, allows to control on the surface of the rail, and the vertical position control on all other surfaces of the rail, namely on the side surfaces of the rail head, neck rail and feathers on the soles.
Due to the fact that the coordinate device for one installation of the support clamps on the rotary frame object provides control over a variety of surfaces of the object and logs the results of monitoring throughout the cross section of the rail without moving it, W�acetelyne reduces the complexity of control object as a whole.
The presence of the swing frame of the two encoders, between which is placed a cassette holder that is associated with the encoder cables, each of which provides a measurement of linear displacement sensor control, allows to determine the position of the sensor on the object of control not only on the plane, but in three-dimensional space, which ensures the extension of the scope of the coordinate device for three-dimensional objects of control and increase the reliability of determination of coordinates, orientation, and size of these defects.
The presence of distinctive features in the claimed technical solution allows to make a conclusion about its compliance with the patentability of "novelty."
The essential features of the claimed invention, determining the receipt of the indicated technical result that is explicitly not follow from the prior art, which allows to make a conclusion about conformity of the invention the condition of patentability "inventive step".
The condition of patentability "industrial applicability" is confirmed on the example of a specific implementation.
The invention is illustrated technical drawings, where
Fig.1 - shown pointing device, mounted on the head rail, with flat frame is installed vertically and the cassette holder is located on the lateral �poverhnosti the rail head;
Fig.2 - flat frame mounted at an angle, wherein the cassette holder is located on the tread surface of the rail head;
Fig.3 is a side view in Fig.2;
Fig.4 - flat frame is installed vertically, while the cassette holder is located at the neck of the rail;
Fig.5 - flat frame is installed vertically, while the cassette holder is located on the feather of the sole.
Universal pointing device for handheld flaw detector is made in the form of a flat frame 1 of the open type, the free ends of which are mounted for rotation on the support 2 clamps fixed on the test object, in this case on the rail 3. On the frame 1 are two of the encoder 4, is provided with a cable 5. Each of encoders 4 is a sensor for measurement of linear displacement sensor using a flexible steel wire rope small diameter of the cord 5. The cables 5 are connected at one point to the cassette holder 6, forming a closed coordinate system. The cassette holder 6 is located between the 4 encoders. In the cassette holder 6 is installed, the cassette 7 placed in her control sensor (not shown), in this case, ultrasonic piezoelectric transducer (pet). The cassette holder 6 is designed for fastening and quick change sensors. For a comprehensive control of the object in the cassette can be� installed sensors for simultaneous implementation, for example, ultrasonic, electromagnetic-acoustic and eddy current control methods. Cassette 7 with the probe mounted on one of surfaces of the object control rail 3 with the possibility of movement on this surface. The coordinate unit is installed, positioned and held on the rail by means of a support clamps 2, made in this case magnetomechanical. Other objects of the control bearing retainers can be made in the form, for example, vacuum clamps.
Pointing device used in conjunction with manual flaw in the various programs non-destructive testing. Handheld flaw detector is equipped with a computer and a GPS receiver (not shown).
The device operates as follows.
To coordinate installation of the device on the testing set flat frame 1, for this purpose, the bearing clamps 2 of the frame 1 is fixed on a selected area of the object 3. The frame 1 is installed in a vertical or inclined position depending on the surface from which they control. Pointing device for handheld flaw detector is intended for registration of results of ultrasonic inspection of the entire cross section of the rail 3: control of the feathers of the base of the rail is performed on the upper surface, a neck and a head rail with lateral surfaces and the surface� Catania. In this case the coordinate positioning device to determine its location in the current time. The cassette 7 with the probe mounted on the surface of the inspection object 3 and manually moved along the surface, carrying out diagnostics of the selected local area. During movement of the cassette holder 6 and the cassette 7 with the probe is changed, the length of each cable 5, which is registered by the encoder 4. Automatically for a given program produces geometric computations, which determine the position of the probe on the test object. Based on these data, calculated the linear displacement of the probe relative to the base coordinates of the alignment, calibration. Thus always tracked the location of the probe, its coordinates.
Coordinate device, equipped with three-axis positioning system, allows scanning of surfaces with the desired step and remember real-time depth coordinates of the detected defects with the construction of tomographic images, which significantly improves the speed control while improving the objectivity and reliability.
Coordinate device records the results of manual inspection of the rail along the entire cross section and with the help of special programs forms of objective testing document. Protocol to�trol automatically includes information about the location and size of defects along the entire cross section of the rail. The device allows you to remember in the on-line depth coordinates of the detected defects. Using manual flaw detect defects such as cracks, incomplete penetration, bubbles, pores, gas shells, non-metallic slag inclusions, etc.
To control other dedicated local section of the flat object of the rotary frame 1 is transferred to this area, and fix it on the object using the reference of the holders 2 in the appropriate position and the cassette 7 with the sensors mounted on another surface of the object.
Thus, the performance of pointing devices in the form of high-precision encoder, provided with ropes and placed on a flat rotary frame, provides three-dimensional positioning, which allows to extend the field of application of the device to use it both flat and a variety of three-dimensional objects of control.
In this case the coordinate device provides control of various surfaces of the object for one to install the supporting fixator frame, allows you to record the results of monitoring throughout the cross section of the rail without moving the device, thereby increasing the accuracy of determining the location and size of defects along the entire cross section of the selected local area of the object of control, and also reduces the complexity ispolzovanpokoleniya device.
Universal pointing device for handheld flaw detector, placed on the object and containing at least one sensor, characterized in that it is made in the form of a flat frame of the open type, the free ends of which are mounted for rotation on the supporting clamps fixed on the test object, wherein the frame has two rotary encoders, each equipped with a cable connected to the cassette holder disposed between the encoders in which the cassette is placed inside at least one sensor monitoring its movement over the surface of the test object.
SUBSTANCE: linear guide with a sliding carriage is installed on a framework. Laser range profilometers with the possibility of moving them to change the position by the conveyor are mounted on the carriage. Laser scanners fixed on a bracket with one laser emitter and two receivers of the reflected signal, which are installed in the laser scanners, are used as the laser range profilometers. The receivers read the reflected signal simultaneously of the same cross-section of a reinforced concrete cross-tie. Minimum two laser scanners for simultaneous measurement of two or more reinforced concrete cross-ties are fixed on the carriage.
EFFECT: simplification of the system and measuring process and an improved performance and efficiency of the system operation due to the provision of a possibility to measure the parameters of two or more cross-ties at the same time.
SUBSTANCE: method comprises inspecting a portion of a railway line using a magnetic flaw detector mounted on a flaw detector car; identifying defects and structural components (bolt and welded joints of rails, metal rail plates etc), signals from which and positions of which are stored in a test card; using data on the structural components of the railway line for navigation during ultrasonic flaw detection of the same portion of the railway line; detailed analysis of objects identified by the magnetic flaw detector using an ultrasonic flaw detector; correcting the test card based on the flaw detection results.
EFFECT: high accuracy, quality and rate of detecting defects on rails.
2 cl, 5 dwg
FIELD: measurement equipment.
SUBSTANCE: device is used to monitor the deviation from straightness at the surface of the side active face of a rail head in horizontal plane and at the rail head running surface in vertical plane by contactless method. The device for automatic monitoring of rails' welded joint straightness comprises a casing, a mechanical portion, end face panels, contactless location sensors, sensors for contactless measurement of distance to the rail surface and an electronic unit. The mechanical portion consists of locating prisms closed by the end face panels on the outer side, the panels are fitted by cutouts corresponding to the surfaces mating the surfaces to be monitored with built-in magnets being installed between them. Each prism is equipped by backing-up tips contacting with the monitored surfaces. The contactless location sensors interfaced with the electronic unit are set near the tips. In the central casing part between the auxiliary prisms there installed are the sensors for contactless measurement of distance to the rail surface which are interfaced with the electronic unit providing for the display of the nonstraightness at analogue indicators and at a graphic display unit and for the storage of nonstraightness results in a memory block. The invention is also related to the method of using the device.
EFFECT: possibility of getting visualised and reliable information, reduction of time required for monitoring of rails' welded joint straightness.
2 cl, 10 dwg
SUBSTANCE: railway testing system contains track measuring truck and network centre and reference stations connected with the system. The truck contains control-computing complex to which track geometrical parameters measurement tools, navigational signals receiver, display unit, memory unit, transmit-receive unit, processor, communication interface unit, local alarm messaging unit and acoustical-electrical transducers are connected. Each reference station includes transceiver for navigational signals. Network centre consist of communication server, processing and control unit and data archiving unit. Also, external track gang notification system is included in the system.
EFFECT: improved safety of track gangs and mobile testing facilities.
2 cl, 1 dwg
SUBSTANCE: diagnostics car incorporated with the train and equipped with strain-gage mounted axles, strain-gage auto couplings, meters, systems of satellite navigation and wireless communication are used to define the track geometry conditions. Cure radii, positions of rail threads in plan and profile, track gage and other parameters related to electronic GPS map to relate them to the data of last trips of track metering train. At a time, strain-gage mounted axles are used to define vertical and lateral forces, their relationship in interaction between track and rolling stock and between rail and wheel. Strain-gage auto couplings are used to define dynamic forces at rolling stock to estimate dangerous section of the track for empty cars to be related to track profile. Proceeding from track geometry parameter measurements and train speed, probability of train derailing is estimated caused by rolling of wheel flange on the rail. Track sections are defined which can have anti-derailing factors lower than standard ones to work out recommendations on current maintenance of said tracks.
EFFECT: higher validity and efficiency of estimation.
2 cl, 3 dwg
SUBSTANCE: invention relates to control over the state of track, particularly, to control over displacement of welded railway rail skeleton section displacement. Proposed method consists in defining the position of markers on rail skeleton relative to fixed objects (reference sleepers). Welded butts are used as said markers. Relative arrangement of selected welded butt with respect to selected reference sleeper is defined by the data of flaw detector car magnetic control channel so that signals from, say, bird pad and welded but can be unambiguously identified on defectogram. Besides their relative spatial position can be unambiguously identified by the data received from track transducer (coordinate meter) of flaw detector car. Magnitude of displacement is defined by comparing current data with that obtained before.
EFFECT: instrumental control over displacement.
SUBSTANCE: invention relates to track safety control and serves for remote detection of changes in track conditions caused by rail structure faults and occurrence of dangerous objects in groundwork. Proposed method comprises recording of vibroacoustic pulses in rail resulted from interaction of wheel pairs with rail joints at equal opposite distances therefrom. Signals registered on train passing said rail joints are filtered out and accumulated. Note here that after passage of first train over known-good track said signals are converted to maximum affinity to conserve parameters of correcting circuit. In passage of the next train of track section - signal generator result of comparison is compared with preset threshold. In case it is exceeds decision is made about availability of affected track ahead of running train.
EFFECT: higher reliability of remote detection in real time conditions.
3 cl, 5 dwg
SUBSTANCE: Invention relates to railway transport, particularly, to determination of track irregularities and other defects. Propose method consists in defining the level controlled track section of electromagnetic radiation by video control appliances in shifting electromagnetic radiation receiver along said section. Measured level of electromagnetic radiation is used to define track wear and defects. Track image is locked in visible spectrum of electromagnetic radiation in polarisation filter with rotary gating axis and processing of images by estimation of Stocks parameters.
EFFECT: determination of track whatever defects and irregularities by whatever processing means.
SUBSTANCE: invention relates to flaw inspection and nondestructive checks. Invention consists in using pulses of surface electromagnetic waves radiated forward and/or backward relative to train direction, registering reflection of said pulses from irregularities of the track and defining type of track and/or rolling stock defects from character of said irregularities.
EFFECT: detection of dangerous macroscopic defects at distance exceed stopping distance and registration of derailment.
SUBSTANCE: invention relates to instruments intended for testing health of tracks. Proposed method consists in mounting flaw detectors, surface irregularities metres and rails video surveillance devices on transport facility at preset relative points.Transport facility is displaced along rails to measure its speed and position relative to rails and continuously measure rails heath by all said devices. Obtained results are combined to relate them to the same rail cross-sections and analyse in said combination. Current and future rails health is estimated.
EFFECT: higher validity of estimation.
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
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.