Method of nondestructive check of railway rails in process of rolling stock traveling and device for its realisation
FIELD: metering equipment.
SUBSTANCE: invention is related to the field of instrument making. Device for contactless collection of information on internal defects of rail at any depth of their location inside rail comprises SHF generator, detector, indicator, antenna, serially connected low pass filter, signal amplifier, analog-digital converter, storage device and neural computer. SHF generator is represented by autodyne transceiver, which is connected to antenna and detector input, and output of neural computer is connected to indicator. In process of rolling stock motion vibrating surface of rail is radiated with electromagnetic waves of SHF range, reflecting from which, SHF electromagnetic waves are received by transceiving antenna. Phase detection is used to extract signal that contains information on parametres of rail vibration, which is compared to reference signals stored in device memory. In order to make decision on defects in rail, comparison circuit is used on the basis of neural computer algorithm.
EFFECT: improved efficiency of monitoring.
2 cl, 1 dwg
The invention relates to the field of instrumentation and can be used for diagnostics of technical condition of rails on a railway transportation.
Existing methods for testing of rails on a railway transport based on the use of ultrasound (see non-Destructive testing of rails in their operation and repair / Akhurik, Bpowmon, Hagrp. - M.: Transport, 1983, - 318 C.). Use of shadow, mirror, shadow, pulse-echo methods.
The main disadvantages of ultrasonic rail flaw detection method are the low speed and the efficiency of control, the need to ensure good physical contact between the controlled material and the piezoelectric transducer by using the liquid ("wet method"), false registration of defects (especially vulnerable to false factors mobile devices - cars, cars, electronics), plus the presence of the human factor (psychophysical condition, qualification and skills of operators) during testing. A significant drawback of the "wet" ultrasonic inspection are high maintenance costs. Piezoelectric transducers during testing abraded or damaged. By design, they are not recoverable.
Known contactless method nerazrushayu the control rails in motion, for example, eddy-current control method for measuring the wear of the side surface of the rail head (patent RF №2236971 C2, 2002.07.16). To implement this method utilizes a device that is installed in the car-potenzmitel with a running truck. After installing the unsprung frame of the undercarriage of the car-potenzmittel sensors in its original position and power up the device the generator voltage begins to produce a high-frequency voltage, which with its output simultaneously to the input of the wear side surface of the rail head. In this issue of the electromagnetic field interacts with controlled rail, creating in the surface region of the rail head eddy currents, the density of which depends on the geometrical shape and dimensions of the rail head. Electromagnetic field eddy current effect on the sensor, inducing in it proportional to these currents EMF resulting from the outputs of the sensor shows a corresponding output voltage, the value of which allows to judge about the defects in the rail head. This method allows us to control at any speed. Its main drawback is the limited ability to identify defects in the depth of the rail. Logged defects at a depth of no more than 6-8 mm
Also known acoustic JV the property of the fault detection of railway track in the process of the motion by rail (patent RF №2126339 C1, 1999). How is that in rails transmit an acoustic signal and then receive the reflected signal of the piezoelectric transducers mounted on bearings on the shaft of the pair of wheels. The transmission and reception of signals are carried out alternately. This method makes it possible to control the movement, however, the disadvantage of it is that it does not preclude direct physical contact with the piezoelectric receiver and requires additional expensive equipment for excitation of ultrasound in the rail segment.
A device for measuring vibration (RF patent No. 2025669, 1991), containing connected in series microwave generator, a detector connected to the indicator and the antenna. The disadvantage of this device is the low sensitivity of the meter, due to its design.
Closest to the claimed method is a method that is used in the vibration meter (patent RF №2082114 C1, 1997.06.20), namely, that between the antenna and the vibrating surface of the object of control is established a standing microwave electromagnetic wave, the parameters of which are judged on the amount of vibration of the test object. The disadvantage of this method is the complexity of its implementation for the inspection of rails in motion.
Closest to savla is the PTO device is a device for measuring vibration (RF patent 2082114 C1, 1997.06.20), which contains a microwave generator, a detector connected to the indicator and the antenna in the form of a circular waveguide. The disadvantage of this device is that when it is used for control in driving at high speed, the average distance between the antenna and the object of control (rail) remains unchanged, so you can choose the maximum sensitivity of the method by choosing the optimal distance between the antenna and the object of control is not possible.
The basis of the invention is a contactless information about the internal rail defects at any depth of their location inside of the rail, as well as improving the performance of the control.
The problem is solved in that in the method of non-destructive testing of rails during movement of the rolling stock on which the rail effect of microwave electromagnetic field and retrieve information about its defects, according to the invention, the SHF electromagnetic field perform automatic transceiver and from a mixture of incident and reflected microwave electromagnetic field by phase demodulation get information parameters, which are judged on integral defects in rails.
The problem is solved in that the device for implementing the method nerazrushayu the control rails during movement of the rolling stock, includes a microwave generator, a detector, an indicator, and antenna, according to the invention, further comprises connected in series lowpass filter, a signal amplifier, an analog-to-digital Converter, a storage device and neurocomputer, the microwave generators used automatic transceiver, which is connected to the antenna and to the input of the detector, and the output of the neurocomputer is connected to the indicator.
Acoustic oscillations arising in the rail during movement of the rolling stock, spreading inside rail, undergo multiple reflections from discontinuities and edges of rail fragment, interfere with each other and reach the surface of the rail, causing it to vibrate accordingly. Moreover, the vibration parameters in the frequency spectrum and time structure will be different from the regular fluctuations inherent in serviceable condition track.
Figure 1 presents a block diagram of an apparatus for implementing the proposed method, which contains consistently connected open transceiver antenna 1, automatic transceiver 2, a phase detector 3, a lowpass filter (LPF) 4, the signal amplifier 5, an analog-to-digital Converter (ADC) 6, operative memory (RAM) 7, a hardware and software processing unit of the signal (it is acomputer) 8 and the indicator 9. This device is installed on the frame of the bogie rolling stock.
During the movement of rolling stock vibrating surface of the rail is irradiated by electromagnetic waves in the microwave range, for example 10ggts. The electromagnetic wave radiated by transmitting antenna 1 which receives the signal of a given frequency from the automatic transceiver 2. Radiated by the transmitting antenna 1 of the electromagnetic wave penetrates into the surface layer of the rail to a depth limited by the skin layer. On the metal surface electromagnetic wave is modulated by the vibration parameters in the rail and preslusas back into space, is registered transceiver antenna 1 and fed to the input of automatic transceiver 2. The signal is then fed to the input of the phase detector 3, where by the phase detection is the information about the vibration of rail surface of the parameters of the differential signal between the incident and reflected signals. Difference frequency is
fGthe frequency of the irradiating microwave electromagnetic waves;
fPthe frequency of the reflected microwave electromagnetic waves.
The principal is the modulation of the phase parameter of the reflected microwave electromagnetic waves, since the phase of the electromagnetic waves directly which transfers information about the features of the defect rail, enclosed in its vibration during movement of the rolling stock. The phase shift of the reflected signal arising due to the vibration of the rail, is estimated as
Δr(Ω) is the amplitude of vibration of the rail, depending on their frequency Ω;
λ - the length of the irradiating microwave electromagnetic waves.
At small values of Δφ reflected microwave electromagnetic wave will have an amplitude modulation index corresponding to Δφ. For this reason, the information parameter of the defect can be identified as using phase, and using the amplitude detection. However, the phase parameter is more sensitive to the composition of the spectrum of a vibrating surface of the rail, which allows for more clearly identify the defects.
The signal transmitting-receiving antenna describes how
Um- signal amplitude;
ω is the operating frequency of the microwave electromagnetic waves
λ - the length of the irradiating microwave electromagnetic waves;
Δr is the amplitude of vibration of the rail;
φ0- the initial phase of the microwave electromagnetic waves.
From the output of the phase detector 3, the signal at the low pass filter 4, the output of which is fed to the input of the signal amplifier 5 and amplified, is fed to the input of analog-to-digital Converter 6, which is converted into digital form, after che is about digitally stored operational storage device RAM 7. Of the RAM 7, the turn signals are read and fed to the multi-input port of a hardware-software unit signal processing (neurocomputer) 8, which is implemented on the basis of the microcontroller. Software processing and interpretation of the useful signal using student neurocomputer algorithm (for example, Fusselman Neurocomputer technique: theory and practice /Per. s angl./ - M.: Mir, 1992. - 240 S.).
At this stage, the direct detection and identification of the type of defect in the welded joint.
Part of the neurocomputer is a memory module in which the digitally stored reference weight signals which are the result of "learning" this neurocomputer during the experimental work, resulting in a computer database of typical defects in the rail. Accordingly, the more memory is information about the different shapes and sizes of the defects, the more accurate qualitative assessment can be obtained about the state of the control object according to the input signal. The decision by the neurocomputer for each specific defect is not based on a single comparison, and on the basis of comparative analysis of the input signal and the statistical data obtained empirically and stored in the embedded memory module (such as module-based Flash memory).
For th is would be to make a decision about the defective condition of the rail, you need to determine correlation correlation signal samples stored in the memory module of a neurocomputer. Comparison of the signals is based neurocomputer algorithm. The result is displayed on the indicator 9.
The proposed method differs from known is completely non-invasive and, thanks to radar method of registration, provides control in motion at high speed. The device for implementing the inventive method may be mounted on the frame of the truck any standard vehicle is a locomotive, carriage, rail cars, etc. in Addition, there is no need to use equipment for excitation of ultrasonic vibrations in the rail, which reduces the cost of the devices used to implement the proposed method of control.
1. The method of non-destructive testing of rails during movement of the rolling stock on which the rail effect of microwave electromagnetic field and retrieve information about its defects, characterized in that the SHF electromagnetic field perform automatic transceiver, and from a mixture of incident and reflected microwave electromagnetic field by phase demodulation get information parameters, they will judge the defects in the rail.
2. The device OS is enforced method non-destructive testing of rails during movement of the rolling stock, includes a microwave generator, a detector, an indicator, and the antenna, characterized in that it further comprises connected in series lowpass filter, a signal amplifier, an analog-to-digital Converter, a storage device and neurocomputer, the microwave generators used automatic transceiver, which is connected with the antenna and the input of the detector, and the output of the neurocomputer is connected to the indicator.
SUBSTANCE: invention relates to mobile complexes of railway track diagnostics. Proposed complex represents a vehicle equipped with combined run system, hardware-software diagnostics system and actuating system. Aforesaid combined run system consists of front and rear suspensions representing a rotary frame made up of levers articulated with the vehicle bearing frame, and axle rigidly coupled with aforesaid levers to support guide rollers. Each suspension is comprises pneumatic drive containing pneumatic cylinders with their cases hinged to the crosswise beam rigidly connected vehicle bearing frame, while rods of pneumatic cylinders are hinged to suspension rotary frame. The hardware-software diagnostic complex consists of track-measuring and/or flaw detection systems with their measuring equipment placed on front and/or back suspension brackets of combined run system, and software-analytical center placed in arranged in interior of vehicle and containing registration unit with PC-based software, as well as long-range communication system, and location system.
EFFECT: higher efficiency.
5 cl, 10 dwg
SUBSTANCE: invention relates to appliances intended for testing diamond switches in conditions corresponding to their operating conditions. Test stand comprises a track section making a tested specimen with its head accommodating a smaller-than-normal-size diamond switch and a rolling body that, given the normal force applied thereon, rolls on over the track section diamond switch profile.
EFFECT: probability to forecast service life of certain material for wheel/rail pairs and to define influence of geometrical linear variations, load size and cycles on results of model test series.
5 cl, 4 dwg
FIELD: electrical engineering.
SUBSTANCE: inventions consider diagnostic and monitoring methods for the running order and wear-out of railway points and/or crossings and/or turn-outs and/or rail joints consisting of several running rails. When railway vehicle passes the points, crossings, turn-outs or rail joint, vibration accelerations are measured and recorded on one or more assemblies of the railway vehicle in two or more spatial directions. The above vibration accelerations are created in the railway vehicle assemblies when it passes the railway point, crossing, turnout or rail joint. In accordance with the invention, the railway vehicle speed is measured and recorded, the movement direction is defined and recorded, the railway point, crossing, turnout and rail joint location is defined and recorded and the exceeding of the given maximum values of the measured vibration accelerations is monitored. Measuring signals from acceleration sensors, speed meters and navigation unit are processed by data acquisition unit. After that, data are stored and evaluated predicting the required time of maintenance and related maintenance costs. If the given maximum values of vibration accelerations are exceeded, a decision is made on the future, more detailed analysis of the railway point, crossing, turn-out and rail joint status.
EFFECT: possible assessment of railway point, crossing, turn-out and rail joint system at less cost and before such assessment is critical.
7 cl, 1 dwg
SUBSTANCE: flaw detector carriage for railway rail control contains flaw detector equipment and rail-cleaning device. Rail-cleaning device contains frame with rail-cleaning scraper eliminating icing made as rectangular box open from front and rear and rail side, and two racks mounted on front and rear box ends connected with lid and walls of box. Inside box metal plates are installed perpendicular to rail surface, plates are divided by flexible gaskets installed on rod traversing racks, metal plates, and flexible gaskets. Longitudinal frame sides have L-shaped cuts with screws installed therein connected with racks, scraper capable of moving in vertical and horizontal-longitudinal planes along L-shaped cuts. Box walls, lid, flexible gaskets and rod are manufactured from electrical insulating materials. Load is placed on box lid increasing impact of metal plates on rail surface.
EFFECT: complete removal of icing from rail surface and increase of accuracy of rail control.
5 cl, 7 dwg
FIELD: building, road works.
SUBSTANCE: the invention refers to area of a railway transportation and is intended for the supervisory control of a rail way. The method of supervisory control of a railway position consists in installation of device on a rail rut, measurement of the passed way, excess of rails, rail gage, registration of the obtained data and addition of values with distance between measuring elements. Installation of wheel pairs on a device frame on the one hand, is performed rigidly, and on the other hand, with possibility of swinging against a cross-section axis. A gauge is measured by installation of measuring elements on lateral surfaces of rails for measurement of distance to an inside face of rails against the frame. Measuring elements are fixed in whatever position. The wheel pairs are used in a control unit of position of a railway, one of which mounted rigidly on a device frame, and the other so that to swing against the cross-section axis fixed on a device frame. The lock elements and the additional detecting device of linear movement are included into the detecting device of measurement of a gauge. Detecting devices of measurement of a gauge are located on a frame from the interior of each rail and supplied with spring-actuated measuring elements capable of being fixed with the lock elements connected with detecting devices of measurement of a gauge.
EFFECT: increase in measurement accuracy, higher operation amenity, expansion of the cart functionality.
2 cl, 4 dwg
SUBSTANCE: invention relates to metrology and can be used for automated control of the rail deflection, for example, in straightening the rail prior to welding the seamless rails. The device incorporates a measuring platform accommodating three optical pickups to keep its front and rear ends and centre, and a measuring device connected to the said pickups. The device comprises also the strips optically contrast relative to the rail surface, arranged on the platform beneath the rail, and a mechanism shifting the rail relative to the immovable measuring platform. The optical pickups are shadow column instruments to record the rail shadow projection against the background of the contrast strip.
EFFECT: possibility of measuring vertical and horizontal rail deflection in straightening.
6 cl, 3 dwg
SUBSTANCE: tuning device incorporates and adaptor-extender to be attached with its one end to railway line tested in-situ or to a fastener attached to the railway section. The said device comprises a vibration signal measuring appliance to be attached to the other end of the aforesaid adapter-extender. The railway line section integrity testing device comprises a control appliance, a vibration generator, a tuning device to be attached to the railway line section. The vibration signal measuring appliance and vibration generator are connected with the aforesaid section to cause its vibration. The railway line section integrity testing system incorporates the railway line integrity testing device attached to the railway section over five consecutive sleepers arranged below the railway line and perpendicular to it.
EFFECT: fast and valid control of the rail parameters.
16 cl, 4 dwg
SUBSTANCE: invention relates to methods and devices intended to measure the rolling stock weight in operating conditions without stopping the said rolling stock and in inclined track automatic control systems. The force transducer incorporates a signal processing unit and a sensitive element fitted on the rail and made up of a passive and active parts moving relative to each other, the passive part being fitted directly on the rail while the active one being fitted on a rigid beam mounted on two hinged supports equidistant, along the rail, from the passive part. The aforesaid passive part represents a bush with an inner and outer threads and is fastened, by means of outer thread and nut, in the rail web hole, while the bush inner thread serves to locate a threaded stepwise rod made from a nonmagnetic material accommodating a magnetic material insert on its end face closer to the sensitive element active part. The said insert magnetisation vector is parallel to the measuring rail direction. The sensitive element active part incorporates a magnetic field intensity meter.
EFFECT: higher measurement accuracy.
FIELD: railway transport; track facilities.
SUBSTANCE: invention relate to method of straightening railway track in plan, physical profile and level and to device for implementing the method and they can be used in scheduled preventive straightening out of track and finishing of track before handling over for operation after major repairs. According to proposed method, railway track is electronically marked out by fitting electronic marks on track axis on each hundred meter and kilometer mark, and scanners of said marks are installed on track measuring car on each track maintainer. Parameters of track rails in plan, physical profile and level are checked by electronic marks. Marks are uninterruptedly read out, their identification number are kept in memory and distance covered at moment of their detection is recorded. In process of calculations and corresponding shifts of track, data base of said electronic marks is formed containing information on location of each marks and distance between adjacent marks. Results of obtained calculations and data base of electronic marks are transmitted to dispatcher centers of track maintainers and further on to computers of said machines. Track is subjected to straightening out starting from set mark and continuously reading information from electronic marks and automatically correcting current index of program task in moment of detection of mark if measured distance from initial mark differs from Log value. Information on current calculated shifts of track is periodically renewed basing of subsequent passings of track measuring car and is transmitted to track maintainers. Invention increases capacity of machine maintenance of track, cuts down time taken for calculation of required straightening out of track, provides acceleration of total certification of geometrical parameters of rail track gauge geometry measuring device and improves quality of said device, provides automatic tie of readings of track maintainers to longitudinal coordinates of track owing to doubling of existing staking out with electronic marking out.
EFFECT: increased capacity of track maintainers.
3 cl, 3 dwg
FIELD: railway transport; permanent way.
SUBSTANCE: invention relates to methods of measurement of displacement of rails under action of movable loads. According to proposed method, horizontal mark is made on nonworking face of rail and magnetized metal rule is attached to nonworking face of rail so that visible division on rule is parallel to horizontal mark on nonworking face of rail. Then geodetic stand is installed stationary out of the limits of track, and video camera is rigidly secured on stand. Definite focal distance is chosen, and horizontal collimating ray of video camera is directed perpendicular to nonworking face of rail to get simultaneous image of mark and rule division. Video frame of rail in unloaded state is fixed. Rule is removed. Then, without changing position of video camera and focal distance, video survey of change of rail level, when train passes, is carried out. Data, thus obtained, are compared by registration of frames of initial and loaded state of rail in computer program for processing of video frames. Difference in positions of rail head is revealed by displacement of horizontal mark relative to its initial positions, and elastic deflection of rail is determined in divisions of rule.
EFFECT: facilitated measurements, possibility of storing results of measurements.
2 cl, 3 dwg
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.