Method of controlling continuous welded rail track rail lengths
SUBSTANCE: invention relates to controlling continuous welded rail track rail lengths. Prior to laying rail length, stress concentration zone (SCZ) is defined from intrinsic magnetic scatter field (IMSF) by using magnetometer pickup to scan along rail head. Magnetic field scatter gradient Hp (dHp/dx) is defined in SCZ, where Hp is magnetic field intensity, A/m, x is analysed line of SCZ, and obtained data is stored as initial data. Then, rail length is again diagnosed in SCZ to define above said parameters after 50-150 mln t of freight is carried on track and obtained data is stored as data on 50-150 mln t of freight transportation. Obtained data is compared with initial data to define maximum parameters. Said zones are defined as most predisposed to failure. Revealed SCZs are subjected to additional intermittent control. Zones most predisposed to failure are subjected to additional control in case rail length temperature is 50-60 degrees below or 10-15 degrees above that of laying rail lengths. In case defect is detected, it is to be eliminated.
EFFECT: higher quality and validity.
The invention relates to the field of monitoring the status of the railroad tracks, in particular to methods of controlling stress conditions sections of rail lashes welded railway tracks caused by temperature changes and fatigue phenomena, caused by the periodic impact of the wheel on the rail with the passage of the composition, and can be used to determine the critical values of the longitudinal compression forces that occur when the temperature of rail lashes compared to the temperature in the fuser, which can create the risk of ejection path or critical tensile force, when the temperature decreases, which may cause fracture of the scourge and the formation of a large gap, dangerous for passage of a train or rail gap junction from for the shear bolts.
A known system for controlling the movement of rail scourge railway track containing a vehicle equipped with a recording device and non-contact sensors that are installed with the possibility of detection and analysis of the location of the working labels printed on the rail whip and on the lining lighthouse sleepers (RF patent No. 2174082).
A disadvantage of the known system is that control deformation of the rail scourge of jointless tracks is carried out only on labels located on the rail of the scourge (the and the upper part of the sole rail scourge) and the frame (lining "lighthouse" sleepers), that is insufficient to obtain reliable results and avoid false triggering of the system and, in addition, in the known device the analysis labels are painted, which also contributes to the reliability of the results.
The known method of control of rail lashes welded rail track, including the registration of the temperature of the rail scourge when laying it into the path, the control torque of terminal nuts and bolts embedded and longitudinal motions (hijacking) of whips on the displacements of the control sections of rail scourge regarding the "lighthouse" sleepers, carrying out measures to eliminate theft excess, and detection in rail scourge of dangerous defect, determining, using a removable ultrasonic flaw detector, border propagation of internal cracks relative to the working face of the rail head, the location of the defect along the length of the rail, its removal and recovery of the rod or rail installation this place pads, if possible, leaving defective places in the scourge.
As a "lighthouse" and selects the sleeper located against the picket column. Its about top rail is painted bright paint. "To the lighthouse" the sleeper is not moved, it must always be well padded, fitting the bolts will tighten the s, standard terminals are replaced by terminals with a reduced height of the feet, and the rubber or rubber cord strip - plastic or other low friction.
Equipment "lighthouse" sleepers and applying the marks made immediately after fixing lashes on continuous mode of operation (Technical instructions on the device, installation, maintenance, repair seamless way. Moscow, "Transport", 2000. Next TO).
The main challenge when implementing this method is to preserve and control the position of the marks relative to the "lighthouse" sleepers when performing track work.
However, in this method there are a large number of false positives and omissions labels as on the rails during operation chalk write the hoisting height (in his way) and other labels. At some sites, the labels are applied in alignment with the first as the vehicle face of the lining, and on the other with the opposite and the sensors are either not getting a signal to actuate, or get it, but with delay, which reduces the reliability and validity of the system.
In the summer with higher temperatures rails, close to the highest for the area, and in winter at lower temperatures of 60°C or more, compared with the temperature in the fuser, or when the air temperature is -30°C and below for the whole validity period of such temperatures to ntrol for seamless whip increases. In those days, the stress state rail lashes requires constant and informative way to control the stress state of welded rail track.
The objective of the proposed technical solution is to increase the safety of railway traffic.
In the process of solving the task is achieved technical result consists in increasing state control of railroads, in particular state of stress control plots rail lashes welded railway tracks caused by temperature changes and fatigue cyclic phenomena in identifying areas where the critical values of the longitudinal compression forces that occur when the temperature of rail lashes compared to fusing temperature, may create a risk of ejection path or critical tensile force, when the temperature decreases, which may cause fracture of the scourge and the formation of a large gap, dangerous for passage of a train or rail gap junction because of the shear bolts.
This technical result is achieved by the proposed control method rail lashes welded rail track, including the registration of the temperature of the rail scourge when laying it into the path, the control torque of terminal nuts and bolts embedded and food is ranked on the progress (theft) of whips on the displacements of the control sections of rail scourge regarding the "lighthouse" sleepers, activities to eliminate theft excess, and detection in rail scourge of the defect determination with removable ultrasonic flaw detector the location of the defect, while before laying rail scourge spend the definition of stress concentration zones (SCZS) by its own magnetic field scattering (smlf)by scanning probe magnetometer along the surface of the rail head, in SCZ determine the gradient of the magnetic field scattering Hp (dHp/dx), where Hp is the magnetic field strength, a/m, x - line survey in SCZ, the received information is stored as the original, then hold re-diagnosis of the scourge in SCZ with the definition of the above parameters when passing on the way 50-150 million tons of cargo, the received information is stored as received after passing on the way 50-150 million tons, compare the received data with the original data, obtained earlier in the respective RCP, determine the maximum change settings, these zones will determine the most susceptible to destruction, revealed SCZ subjected to additional control, periodically carry out such control, the zone of maximum susceptibility to fracture is subjected to additional control in excess of 10-15 degrees, or when the reduction temperature is s at 50-60 degrees scourge, regarding temperature styling whip in the path, if a defect is detected spend his resolve.
In the operation of jointless tracks can occur progress of individual sections of rail lashes due to the redistribution of stresses in the magnitude and in sign, while the ends of the pipe can be fixed. The change of the stress state of jointless tracks can be identified by the change in the distance between the mark on the rail of the scourge and the mark on the reference mark in each control section.
theft of the pipe causes a disturbance in the temperature-stress mode of their work and can lead to dangerous concentrations in the whips tensile or compressive stresses. Theft lashes only possible in areas where tightening the terminal and bolts embedded below permissible values given in p. TO.
However, despite the constant periodic monitoring of the torque of terminal nuts and bolts embedded, track time reduction tightening nuts is almost impossible. This is due to the fact that jointless tracks enough passing several compounds with wheel pairs having flows (Navara) on the rims. These wheels at a certain speed are resonant vibrations and create significant periodic shock loads on the rails, the cat is who passed on fasteners and bolts, and nuts. This vibration leads to samootvinchivaniya nuts, which can lead to the violation of the established temperature and stress regime in the scourge and can lead to dangerous concentrations in the scourge of tensile or compressive stresses.
During the passage of trains with defective wheels on the rail can be formed areas of high concentration of mechanical stresses, which may be zones of destruction. Data SCZ cannot be detected with conventional methods. Currently, based on the established correlation of dislocation processes in physics of magnetic phenomena in metals subjected to cyclic loads in the presence of a magnetic field of the Earth, developed a method of diagnosis of SCZ, based on the phenomenon of the self-magnetic field scattering (Vlasov V.T., Dubov A.A. Physical basis of the method of metal magnetic memory. CJSC "Yee", 2004, page 424). These zones are identified on magnetic field strength and gradient changes. The primary diagnostic parameter of the method of metal magnetic memory is the gradient of the magnetic field scattering Hp (dHp/dx), recorded during the scanning sensor specialized magnetometer along the surface of the rail head. It is established that this diagnostic option in force magnetomechanical effect directly on the displays energy state of the surface and deep layers of metal in SCZ. To clarify the question of how data SCZ are dangerous sections of the track, the authors have conducted studies revealed SCZ. Figure 3 shows the presence of multiple fatigue cracks extending from the surface into the base, and microcracks located at a certain deepening of the surface, which is parallel to the roll surface. This concentration and location of microcracks under appropriate mechanical stresses and the geometry of the path can be the focus of further destruction of the rail without any additional effort from outside. To identify SCZ offered periodically, after passing on the way 50-150 million tons, to control stress concentration zones (SCZS) by its own magnetic field scattering (smlf), SCZ to determine the intensity of the magnetic leakage field (smlf) - Hp and the magnetic field gradient (dHp/dx). Such periodic monitoring are to identify areas with a maximum susceptibility to destruction, and to conduct the necessary maintenance work. Mandatory additional control rail is subjected to the scourge in excess of 10-15 degrees or when the temperature of 50-60 degrees scourge regarding temperature styling whip in the way. Such a change in the temperature of the scourge should be classified as dangerous, as it can gain and the abrupt change of the stress state rail scourge, which may cause fracture of the scourge and the formation of a large gap, dangerous for passage of a train or rail gap junction because of the shear bolts.
The proposed method was tested on the rail of the scourge, which ends together in the second hole from the end was revealed the SC zone. The SC held device ICNM-FP. Figure 1 shows the change in the magnetic field strength in the area of the hole and the magnetic field gradient. Detailed research has identified zones KN showed the presence in the zone with the maximum value of the field gradient dHp/dx numerous microcracks with the disclosure of 15-30 microns. Figure 2 shows the results of metallographic studies of this area. The depth of the microcracks is about 1000 microns. Studies have shown the possibility of the proposed method to control the stress state of the track.
The method of control of rail lashes welded rail track, including the registration of the temperature of the rail scourge when laying it into the path, the control torque of terminal nuts and bolts embedded and longitudinal motions (hijacking) of whips on the displacements of the control sections of rail scourge regarding the "lighthouse" sleepers, carrying out measures to eliminate theft excess, and detection in rail scourge the effect determination with removable ultrasonic flaw detector the location of the defect, wherein the pre before laying rail scourge spend the definition of stress concentration zones (SCZS) by its own magnetic field scattering (smlf) by scanning probe magnetometer along the surface of the rail head, in SCZ determine the gradient of the magnetic field scattering Hp (dHp/dx), where Hp is the magnetic field strength, a/m, x - line survey in SCZ, the received information is stored as the source, then a second diagnosis of the scourge in SCZ with the definition of the above parameters when passing on the way 50-150 million tons of cargo, the received information is stored as received after passing through the way 50-150 million tons, compare the received data with the original data, obtained earlier in the respective RCP, determine the maximum change settings, these zones will determine the most susceptible to destruction, revealed SCZ subjected to additional control, periodically carry out such control, the zone of maximum susceptibility to fracture is subjected to additional control in excess of 10-15°C or when the temperature of 50-60°With the scourge regarding temperature styling whip in the path, if a defect is detected spend his elimination.
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.
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.
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.