A device for determining irregularities on the surface of the rail
(57) Abstract:Usage: railway transport, namely carriages and track measurement devices for monitoring and identifying irregularities on the surface of the rail. The inventive device for determining irregularities on the surface of the rail contains two accelerometer attached to buxom one pair of car-potenzmittel, delay lines, the switch analog signals, the sensor turns the wheel, digital speed gauge, decoders codes, switch digital signals, two-input logic element OR pulse counter, two blocks of double integration, and unit detect the trajectory of the wheel on the rail head, the memory multiplier and a digital signal. In the device entered the magnitude of the acceleration is proportional to the speed of the wheel on the rail head, which being multiplied by constant values recorded in the memory cells arrive at the input of the integration is invariant to speed. 6 Il. The invention relates to railway transport and can be used to identify irregularities on the running surface of the rails.Known useplanning to buxom one pair of car potenzmitel, switch analog signals, the sensor turns the wheels connected to the digital speedometer, the output of which is connected a decoder codes, and two blocks of double integration, the outputs of which are connected with the inputs of the block defining the trajectory of the wheel on the rail head.In the known device the sampling frequency of the analog signals of the acceleration is constant and is determined by maximum permissible speed of the wheel rolling on the rail. For large values of permissible speed of the wheel rolling on the rail, the sampling frequency can reach significant values, which leads to redundancy of information in m times at low speeds of the wheel rolling on the rail and, as a consequence, the performance of the known device as a whole.To ensure the conditions of invariance of the calculated values of vertical acceleration to the speed of the wheel rolling on the rail in the known device used blocks of double integration, which have different transmission characteristics, taking into account the speed of the wheel rolling on the rail. The number of blocks of double integration 12-i, 13-i, having individual transfer characteristics, related to the values of m, the complexity of the known device is considerably increased.The purpose of the invention increase productivity while simplifying the structure of the device.This is achieved in that in a device for determining irregularities on the surface of the rail containing two accelerometer attached to buxom one pair of car-potenzmittel, switch, analog signals, the sensor turns the wheels connected to the digital speedometer, the output of which is connected a decoder codes, and two blocks of double integration, the outputs of which are connected with the inputs of the block defining the trajectory of the wheel on the rail head, inputs of m memory cells, the switch to digital signals, connected in series with the element OR the counter and additional codes decoder, delay line and serially connected analog-to-digital - to-howl Converter, the multiplier digital signals and the multiplexer digital signal outputs connected to the inputs of two blocks of integration, and managing input to an output of the second decoder codes, additionally connected with the control input of the switch analog signals, the functional inputs of which are connected through one and the other delay lines with one and the other sensor is th input is through a third delay line coupled to the output element OR one and the other inputs of which are connected, respectively, directly and through the fourth delay line with rpm sensor wheel. Each of the information inputs of switch digital signals connected to the corresponding i-th memory cell, the control input with the output of the first decoder codes that are output to the second input of the multiplier digital signals. Each stage of the first and second blocks of double integration includes shift registers, the control inputs of which are respectively connected through the fifth and consistently connected fourth and sixth delay line with rpm sensor wheel, and connected to the outputs of registers via the optional digital multipliers adder.In Fig.1 shows a block diagram of the device of Fig.2 a block circuit diagram of double integration; Fig.3 a block circuit diagram of the determination of the trajectory of the wheels on one rail of Fig.4 and 5 implementation scheme switch analog signal multiplexer digital signals and switch to digital signals, and Fig.6 hodograph distribution of force F, velocity V and acceleration a, acting on the wheel when driving on the rail head.A device for determining irregularities on the surface of the I, six lines 3-8 delay, the switch 9 analog signals, the input of which is through lines 3 and 4 delays connected with sensors 1 and 2 accelerations, and the output is connected to one of inputs of analog-to-digital Converter 10, the output of which is connected to one input of the multiplexer 11 digital signals. Two-element OR 12 with its output connected to the second input of the analog-to-digital Converter 10 and the input of the counter 13 pulses. The device has two decoder 14 and 15 codes, the sensor 16 of wheel revolutions, its output connected to the input digital speedometer 17, the output of which is connected to the decoder 14 codes. Included in the device multiplier 18 digital signals its input connected to the output of analog-to-digital Converter 10. The output of the multiplier is connected to the functional input of the multiplexer 11 digital signals, the outputs of which are connected with the inputs of the blocks 19 and 20 double integration.Unit 21 to detect the trajectory of the wheel on the rail head (hereinafter, the unit determining the trajectory of its inputs connected to the outputs of the blocks 19 and 20 double integration. The newly introduced into the device m of the cell memory 22 are connected with the inputs of the switch 23 digital signals, the output of which is s contains the first block 24 of integration, which includes m registers 25 shift, m-1 multipliers 26 digital signals, the inputs of which are connected to the outputs of the above-mentioned registers 25 of the shift. The outputs of the multipliers 26 are connected with the inputs of the multi-input adder 27, the output of which is the functional input of the second block 28 of integration is identical to the block 24 of integration. The second input unit 28 of integration is connected with the output of the sensor 16 of wheel revolutions through the delay line 8, the output of block 28 of integration is the output of the block 19 or 20 double integration.Unit 21 to detect the trajectory of the wheel on the rail head contains four multiplier 29-32 digital signals, two two-input adder 33 and 34 and two cells 35 and 36 of the memory. The first inputs of the multipliers 29 and 31 connected to the output unit 19 double integration, the second input of the multiplier 29 is connected to the output of memory cell 35, and the second input of the multiplier 31 and a cell output memory 36.The output of the multiplier 29 is connected to the first input of two-input adder 33, the output of multiplier 31 to the first input of two-input adder 34, and the first inputs of the multipliers 30 and 32 connected to the output of block 20 double integration. The second input of the multiplier 30 is connected to the cell output 35 pambo adder 34, and the output of multiplier 32 with the second input of two-input adder 33. The outputs of the adders 33 and 34 are output.The switch 23 digital signal contains the mn-bit switches 37, m functional inputs connected to the outputs of the m cell memory 22, and the control inputs of the n-bit switches 37 to m outputs of decoder 14. Outputs n-bit switch 37 connected together and connected to the second input of the multiplier digital signals 18. Each of the n-bit switches 37 consists of n keys 38, the functional inputs of which are connected to the outputs of the respective n-bit cell memory 22, and control inputs connected together and connected to the corresponding output of the decoder 14. The outputs of the keys 38 of the i-th n-bit switch 37 is combined with the corresponding outputs of the remaining n-bit switches 37.The device operates as follows.When rolling a pair of wheels, the wheels which do not have irregularities on the surface, the irregularities on the rail sensors 1 and 2 accelerations enshrined dont forget a pair of wheels with a vertical orientation of the axis of sensitivity, produce an electrical signal proportional to occur vertical speed of the wheel rolling on the rail. This sequence of pulses through the delay line 5 and the two-input logical OR element 12 is supplied to the counting input of the counter 13, the output of which is a binary code input to the decoder 15. The decoder 15 generates a control signal on the control input of analog switch 9 through a line 6 delay input "Starting ADC" analog-to-digital Converter 10 and the control input of the digital multiplexer 11. Depending on the state of the counter 13, the decoder 15 generates a control signal by which the analog switch 9 in turn connects to the input of analog-to-digital Converter 10, the signals from the acceleration sensors 1 and 2, starts with a delay conversion to analog-to-digital Converter 10, and is connected using a digital multiplexer 11, the output of multiplier 18 digital signals to the inputs of corresponding blocks 19 and 20 double integration. At the same time the sequence of pulses from the sensor 16 of wheel revolutions is input to the digital speedometer 17, which at its output generates code that depends on the speed of the rolling wheel. Output digital speedometer code 17 is input to decoder 14, which generates the control signal for commute is noites 18 digital signal output corresponding cell memory 22, the stored code, the value of which corresponds to the correction factor transfer characteristics of the blocks 19 and 20 double integration in this speed range, rolling wheels, what is required for compliance with the conditions of invariance calculation of displacements of the wheel vertical accelerations to the speed of the wheel rolling on the rail. In addition, the sequence of pulses from the sensor 16 of wheel revolutions through lines 7 and 8 of the delay is fed to the control inputs of shift registers integrators blocks 19 and 20 double integration. From the output of analog-to-digital Converter 10 code corresponding to the acceleration signal of the currently connected sensor acceleration is applied to the first input of the multiplier 18 digital signals, which performs the correction data by multiplying the coefficients stored in the cell memory 22 and which uniquely correspond to the respective sub-bands in the range of permissible speed of the wheel rolling on the rail. From the output of the multiplier 18 digital code signals received at the input of digital multiplexer 11, which gives it to the inputs of corresponding blocks 19 and 20 double integration. In blocks 19 and 20 double integration going on the th in digital form vertical displacements of the wheels rolling it over bumps on the head rail. Outputs of blocks 19 and 20 double integration codes corresponding to vertical movement of axle equipment wheelset, served on the block 21 determine the trajectory, which implements the algorithm for solving the system of two algebraic equations. This block determine the trajectories allows to eliminate the influence of vertical displacement of axle equipment. The outputs of the block 21 are the outputs of the device. Each sensor 1 and 2 accelerations captures the total component accelerations from two wheels. To separate the components of the accelerations in the device entered the block determine the trajectories of the motion of the wheel irregularities in the rail head, which implements the function of solving a system of two equations with two unknowns.The sensor 16 of wheel revolutions is set to frequency quantization.If we assume that for a full revolution of the wheel for 1 sec sensor 16 turns of the wheel will generate a sequence of pulses with a frequency fowhen the speed increases by m times the rpm sensor wheel will generate a sequence of pulses with a frequency m fo. The time of passage of the roughness length l of the wheel decreases in m times.Therefore, at any speed the passage to the ranks m, determined only by the value of fothe greatest frequency harmonic in the spectrum of the input signal. I.e., in the proposed device, enter only the necessary amount of information to determine the trajectory of a malfunction, do not depend on the speed of the wheel. Hence, the performance of the proposed device in m times higher than the prototype.The trajectory Z(l), where l is the coordinate describing the x-axis), the motion of the irregularities of the rail head is described by the equation:
n, l value, is inversely proportional to the magnitude and having the dimension of length,
Vn(l), an(l) respectively vertical components of velocity and acceleration of the movement of the wheel along the rail head;
N limit of integration, having the dimension of length.In the device function Z(l) is implemented at the output of blocks 19 and 20 double integration (unit 19 for determining the trajectory of the wheels on one rail, the block 20 on the other).In Fig. 6 shows a vector diagram acting on the wheel during the movement of forces F, FnFl, velocities V, VnVl, accelerations a, an, al(n, l signs respectively vertical is La F, acting on the wheel from irregularities and therefore the greater the vertical component of anthe acceleration measured by the acceleration sensor on the wheel of the truck.In a device for determining irregularities on the surface of the rail entered the magnitude of the acceleration is proportional to the speed of its movement along the rail head. The multiplier 18 and m memory cells 22, where the recorded values of the constants allow the magnitude of the acceleration input to the input blocks of integration, to make invariant to speed. When the values of the constants inversely proportional to the speeds of the wheels on the rail head, the problem of invariance (independence) from the velocity of the incoming information in blocks 19 and 20 double integration will be solved.The device for determination of the roughness on the surface of the rail can be successfully applied in train track measurement serving one of the main diagnostic tools the ways in which they identify a path failure, set the priority and timing of track works on elimination of the revealed faults of the way. A DEVICE FOR DETERMINING IRREGULARITIES ON the SURFACE of the RAIL, Sadeh signals, the rpm sensor wheel connected to the digital speedometer, the output of which is connected a decoder codes, and two blocks of double integration, the outputs of which are connected with inputs of the block defining the trajectory of the wheel on the rail head, characterized in that it introduced the m memory cells, the switch to digital signals, connected in series with the element OR the counter and additional codes decoder, a delay line and serially connected analog-to-digital Converter, a digital multiplier signal and the multiplexer digital signal outputs connected to the inputs of two blocks of integration, and managing input-output of the second decoder codes additionally connected with the control input of the switch analog signals, the functional inputs of which are connected through one and the other delay lines with one and the other acceleration sensors, respectively, and the output from the functional input of the analog-to-digital Converter, the control input of which is through a third delay line coupled to the output element or, one and the other inputs of which are connected, respectively, directly and through the fourth delay line with rpm sensor to what cacoy memory the control input with the output of the first decoder codes output from the second input of the multiplier digital signals, and each stage of the first and second blocks of double integration includes shift registers, the control inputs of which are respectively connected through the fifth and consistently connected fourth and sixth delay line with rpm sensor wheel, and connected to the outputs of registers via the optional digital multipliers adder.
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.
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: 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
SUBSTANCE: method to determine mechanical stresses in a rail consists in the fact that a conical hole is drilled in rail journals, and its diameters are measured along perpendicular axes, afterwards the measured diameters are subtracted. Rail temperature is also measured, afterwards all measured data is sent to a diagnostics station. The device for determination of mechanical stresses consists of an accessory of a conical shape for measurement of diameters, where a disc is inserted, the plane of which is parallel to the plane of the rail journal. At each side of the disc there is one strain gage sensor arranged on the perpendicular axes of the disc. Inside the accessory there is a temperature sensor. Outlets of sensors, via a sealing unit, are serially connected with amplifiers, analogue-digital converters, a microprocessor and a wireless modem.
EFFECT: higher reliability of rails operation by monitoring of mechanical stresses.
2 cl, 6 dwg
SUBSTANCE: invention relates to determination of endless surface curvature radius, for example, that of the track rail working surface. Wheel rolling path width is defined as well as the segment height measured from the chord subtending the circle arc of the rolling path surface outline. Quotient of the division of the sum of squares of the wheel rolling path half width and said segment height is calculated by said double height of the segment. Said segment height is measured in the axis extending from the rolling path centre perpendicular the chord subtending the extreme points of the rolling part surface.
EFFECT: possibility of determination under open pit conditions without complicated calculations and shaping the worn-out rails in due time.
2 cl, 4 dwg
FIELD: measuring equipment.
SUBSTANCE: when monitoring the railway track axis position in the diagram by the road measuring device (for example, a traveling car), at the beginning of the summer season (April-May, depending on the climatic zone), the rail bending values of a continuous track, not yet dangerous for the train movement, are fixed in the diagram. These original diagrams are retained until the diagrams are obtained in the next measuring device way. The subsequent diagrams are superimposed on the previous ones, combining them in a linear coordinate (abscissa), the difference in the ordinates is determined at the maximum boom position, this difference is divided by the elapsed time between the measuring device ways, the boom growth rate is determined, and thus a dangerous place is detected with a dangerous rate of the unevenness boom value change.
EFFECT: dangerous place with excessive longitudinal compressive force in rail lashes is detected in advance.