Method of measuring horizontal irregularities (levering) and curvature in plan of rail lines
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.
The method can be used to monitor and forecast the state of the railroad tracks and is that measured by the inertial navigation system (ins)above the king pin of the measuring trolley, the current rate potenzmitteln car and using a sensor of angular displacement current wobbling angle measuring truck relative to the car body and also by means of sensors Buchs-rail measure the distance from the flanges of the respective wheels of the truck to the rail head. According to the received information calculate the current rates of rail lines. Values of horizontal irregularities of rail lines receive as a work base truck on the deviation of current courses of rail lines from the current average on the basis of truck courses of rail lines. Current radii of curvature of the rail lines is the quotient of the base truck to increment the course of the corners of the rail lines on the basis of the truck.
The invention relates to monitoring the condition of the railway track.
There is a method of measuring cantilever bending in the plan (straightening) from asymmetrical chord, which is measured for each rails amount of horizontal movement of the rail in three points (over 4.5 m and 17 m) with respect to the car body with optical sensors body-rail .
A known method of measuring the curvature of the path in terms of , which is determined by the change of angle moving along the path of the chord length equal to the base of the carriage in a horizontal plane. The rotation angle equal to the azimuth (azimuth of the longitudinal axis of the body)measured Ann, minus the wobbling angle of the body, determined by differential horizontal movements of the opposite ends of the body relative to the rails, measured by the optical sensors of the rail-wheel drive.
Horizontal irregularities of the rail lines is fully characterized by the alignment and curvature of the path in the plan. The straightening of rail lines are short, the irregularities of the rail lines, defined as the deviation of the current provisions of rail lines from the middle (approximating) curves.
The disadvantages of these methods are: distortion Hardouin method of short horizontal irregularities (straightening); low accuracy of the measurement of the curvature of the short curves, such as turnouts, due to the fact that the chord length comparable to the length of the curve.
Consider in more detail the properties of chordates methods of measurement.
Assume that the chord length lx=a+b sliding their ends along the curve x(y) (see figure 1). A small amount of roughness compared to the chord length allows to represent the movement of the chord as the amount of rotation around the instantaneous center at small angles and translational movement et the center with speed γ in the y-direction. Output value bordovogo meter is the length of f(y) boom bending, spaced at a distance b from the end of the notochord (point 3 in figure 1). Input the influence of the roughness of the rail x(y), which can be written as harmonic functions x=x0cosωt.
It is known that the ordinates xipoints 1, 2 and 3, the curve associated with a boom length of her bending ratio
The expression (1) allows to obtain the transfer function bordovogo method. When exposed to harmonic irregularities having frequency ω and the amplitude of x0given the delay that is proportional to a constant speed of movement of the car ν, ordinates xi(i=1,2,3) are changed according to the law
Taking into account (1) and (2) boom length of the curve can be represented in the form
Thus, using the expression (3)can Hardaway measuring device to correlate the frequency transfer function
Because the bumps are easier to present as a function of the longitudinal coordinate of the way, let's move to the new independent variable, using the obvious relation y=νt. Then harmonic the Skye roughness takes the form
where λ - wavelength roughness. Note that the right side of expression (5) does not depend on the speed of the car.
If the input signal will be considered as moving x2measuring roller or measured by non-contact sensor distance from the chord to the rail, the transfer function bordovogo measuring device will be
where- spatial frequency roughness".
A dependency graph of module frequency transfer function r(λ), constructed in accordance with the expression (4) for the case ranapia chord (a=b, lx=2A, shown in figure 2. From the graph we see that the link method makes it possible to approximately reconstruct the shape of the bumps only on the condition that its length exceeds the length of the chord λ>A. When increasing the length of the uneven sensitivity of the method decreases significantly.
The proposal to use not only the angle but also the speed information generated by the Ann, was made Professor Speditionen. The resulting algorithm for determining the horizontal and vertical irregularities using the corners of the course and tilt of the carriage in the longitudinal plane (pitch) and the speed of the car. However, as rightly said by the author himself, "goniometric methods for the determination of the profile across the tsya methodical error associated with the mismatch between the tangent to the track line and the longitudinal axis of the car, which is, essentially, a chord length of 20 m. Indeed, the proposed method will skip the bumps having a length equal to the length of the chord, since it does not change the angular orientation of the car body, and will have all the disadvantages of Hardaway method.
Let us consider this situation in some detail in relation to the control of irregularities in the horizontal plane. For the transition from the angular position of the carriage to the unevenness of the rails sensors are used translational movements of fixed points of the body relative to the rails. Connecting the control points on the rail between them, get a line, which we will refer to measuring chord (figure 3). The angular deviation and offset measurement of the chord from the longitudinal axis of the body of the car shelter can be caused by the following reasons.
1. Bias truck from the axis of the gauge in the process of cross-section fluctuations or changing the gauge. This leads to a change in the distance δijbetween panel Jack and rail (i=1, 2 is the number of the measuring wheel pair; j=l, n is the index of the left and right wheels). Distance δijmeasured by non-contact displacement sensors optical or other type.
2. Turn the trucks around the king pin otnositel the body on the corners α 1and α2. In the distance values between the first and second carriages and the body is changed to
where a is the distance from the wheel axis to the transverse axis of the truck. Expression (7) is true for measuring the chord lx=l+2f, where l is the distance between the pins of the first and second trolleys.
3. The wobbling (yaw) of the car body on the spring suspension regarding books wheelset. If we assume that the fluctuations of the car on the corner of the yaw happen around its center of mass, it δB1=-δB2.
Thus, the total angular deviation measuring chord from the longitudinal axis of the car will be
The angular position of the measuring chord relative to the project and course angle Towards0
where ψ - the yaw angle measured by the ins. The angle of the chord relative to the direction North is defined by the expression
where the heading angle ANT K=K0+ψ.
All included in the expression (8) the angular and linear displacements of the elements of the car must be measured by sensors included in the measurement system. Modern potenzmitteln cars, such as the German car OMWE, have such a set of sensors. Better yet, use ncont Kanye sensors, measuring directly the distance between the car body and the surface of the rail. After all the transformations again come to Hardaway method of measurement.
A direct transition from the angle measuring chord to coordinate and profile roughness way possible only in a fairly small range of long irregularities. Indeed, by analogy with the expression (2) we write for x1start and x2the end of the notochord
The relationship between the coordinates of the ends of the chord and the angle of its rotation α set expression
On the other hand,
where:- introduced higher repetition frequency waves irregularities.
The frequency transfer function (x1- the angle of rotation of α) bordovogo device takes the form
To obtain an inverse of a transfer function is necessary to know the magnitude of the translational displacements of the center of rotation of the chord. Comparing expressions (6) and (9), it is easy to see that the dependence r(λ) will have the same form as the graph presented in figure 2, if we replace the l xon the x-axis. Hence the fair and all the conclusions made above defects bordovogo method.
The objective of the invention is to develop beshanogo (single point) method of measurement the straightening of rail lines.
To solve the problem in the method of measuring horizontal irregularities (straightening) and curvature in terms of rail lines calculate the current rates of rail lines as the current rate of the body minus the current angle of nparalleled of wheels wheelset measuring truck and rail heads thread, then get the current values of horizontal irregularities (straightening) of rail lines as a work base truck or reject the current rate of rail lines from the current average on the basis of truck courses of rail lines, and current radii of curvature of the rail lines is the quotient of the base truck to increment the course of the corners of the rail lines on the basis of the truck.
The technical essence of the invention is explained as follows.
Under the straightening mean roughness of each of the rail lines in the horizontal plane relative to the average position of each thread.
The current rate of rail lines can be defined as
where KIns- the current rate of car body; γTKithe wobbling angle change is sustained fashion truck relative to the body; (hli-h2(i-n))/bT=αL- angle nparalleled of ribs of the left wheels of the trolley head of the left rail; (h3i-h4(i-n))/bT=αP- angle nparalleled of ribs right wheels of the trolley head right rail; hji- the distance from the j-th flange to the rail head; bTbase truck; n=bT/λML; where W λML- increment the odometer (distance sensor).
In other words, the current rate of the rails the same as the course truck virtual pressed against the flanges of the wheels to the rail head (at a depth of 15.7 mm below the running surface of rails).
Values of the current horizontal irregularities will have values
where- (deviations from the current rate of rail lines from the current average), and averaged on the basis of the current truck courses, characterizing the average position of rail lines (in azimuth)
Current radii of curvature are determined by the formula
where δKl=Kl-KRL(i-n); δKC=KC-KRP(i-n).
More accurate current assessment of the Ki of the radii of curvature using an average current rate of rail lines, namely
as in (10) excluded the effect of short horizontal irregularities.
Despite the fact that Ann has a significant error (fraction of a degree) course angle measurement, the accuracy of determining the horizontal roughness and curvature in the plan will be high, as in the method used increments course angles, all components of which are measured with high accuracy and high resolution. Increment and course angle of the body can be measured by a laser gyro ins with an error of less angular seconds. Dvadtsatimetrovy optical sensor relative angular displacement, measuring the angle of the wobbling of the measuring bogie relative to the body, has an error at the level of the angular seconds.
Measurement error angle nparalleled of wheels wheelset measuring truck and rail heads of threads is determined by the errors of optical sensors Buchs-rail, which is no worse ±0,1 mm At the base of the truck bTequal to 2.4 m, it will be 17 seconds of arc. The total measurement error variance of the current courses of rail lines from the current average will be about 20 seconds of arc (RS 9.69·10-5rad). Then the measurement error of the horizontal n is ravesta will not exceed ± 0,25 mm
Thus, the proposed method allows to measure with high precision and without distortion wavelength horizontal irregularities of the rail lines that at small increment odometer will allow you to identify defects in the rail head. In addition, the proposed method allows high-precision measurement of the radii of curvature of short curves plots, such as turnout (because the length of the base of the truck about 7 times smaller than the base car).
1. Wagon-potenzmittel CRI-4. Technical description. EIMN t0. - M.: 1996.
A method of measuring horizontal irregularities (straightening) and curvature in terms of rail lines, which is measured by the inertial navigation system (ins), mounted over the pivot measuring trucks, the current rate of body potenzmitteln car and using a sensor of angular displacement current wobbling angle of the measuring bogie relative to the body, then with the help of sensors Buchs-rail measure the distance from the flanges of the respective wheels of the truck to the rails, characterized in that the measurement information calculated current rates of rail lines as the current rate of the body minus the current angle of the wobbling of the measuring bogie relative to the body minus the current angle of nparalleled the flanges of the wheel is ar measuring truck and heads of rail lines, then get the current values of horizontal irregularities of the rail lines as a work base truck on the deviation of current courses of rail lines from the current average on the basis of truck courses of rail lines, calculated from the rates of rail lines, and current radii of curvature of the rail lines is the quotient of the base truck on the measured increment of course angles of rail lines on the basis of the truck.
FIELD: location of radiation sources.
SUBSTANCE: the method consists in determination of the angles-bearings of radiation sources, which is performed with the aid of two optic-location units, each having a scanning mirror, lens and a photodetector. The point located on the intersection of the scanning mirror and the lens optical axis is used as the reference point of angles-bearings. At determination of angles-bearings the shift of the angle-bearing reference point due to scanning is determined, and the change of the distance between the optic-location units is determined, which is used in determination of the co-ordinates of the radiation sources. Two optic-location units in the device for remote determination of the co-ordinates of the radiation sources are connected to the unit for determination of the angles-bearings of the radiation sources connected to the unit for determination the co-ordinates of the radiation source, and a unit for determination of the shift of the reference points of angles-bearings, unit for input and storage of the data of distance between the optic-location units and an adder are introduced. The output of the unit for determination of angles-bearings is connected to the input of the unit for determination of the shift of the reference points of angles-bearings, the outputs of the unit for determination of the shift of the reference points of angles-bearings and the unit for input and storage of the data of distance between the optic-location units are connected to the adder, whose output is connected to the unit for determination of the co-ordinates of the radiation sources.
EFFECT: enhanced accuracy of readout of the co-ordinates of radiation sources due to correction of the co-ordinates of the reference points of angles-bearings.
2 cl, 5 dwg
FIELD: instrument engineering; measurement engineering.
SUBSTANCE: system can be used in night vision devices. Bench mark unit of the device is put into coincidence with night vision device in such a way that bench mark element disposition orientation vector is oriented relatively optical axis of night vision device. System has synchronizer, night vision device control unit, bench mark unit distance measurement control unit. First input of synchronizer is connected with night vision device through night vision device control unit. Second output of synchronizer is connected with input of bench mark unit distance measurement through bench mark unit distance measurement control unit of the device.
EFFECT: widened operational capabilities.
5 cl, 4 dwg
FIELD: cosmonautics, applicable in space activity - space exploration, exploration of the solar system, observation of the Earth from the space, at which it is necessary to determine the space co-ordinates of the space vehicles and the components of their flight velocity vectors.
SUBSTANCE: the method consists in the fact that in the intermediate orbit simultaneously with determination of the co-ordinates of the space vehicle (SV) at initial time moment t0 by signals of the Global Satellite Navigation Systems the determination and detection of radiations at least of three pulsars is carried out, and then in the process of further motion of the space vehicle determination of the increment of full phase ΔФp=Δϕp+2·π·Np of periodic radiation of each pulsar is effected, the measurement of the signal phase of pulsar Δϕp is determined relative to the phase of the high-stability frequency standard of the space vehicle, and the resolution of phase ambiguity Np is effected by count of sudden changes by 2·π of the measured phase during flight of the space vehicle - Δt=t-t0; according to the performed measurements determined are the distances covered by the space vehicle during time Δt in the direction to each pulsar and the position of the space vehicle in the Cartesian coordinate system for the case when the number of pulsars equals three is determined from expression where Dp - the distance that is covered by the space vehicle in the direction to the p-th pulsar; Δt - the value of the difference of the phases between the signal of the p-th pulsar and the frequency standard of the space vehicle, measured at moment Tp - quantity of full periods of variation of the signal phase of the p-th pulsar during time Δϕp; Np - column vector of the position of the space vehicle at moment Δt; - column vector of the space vehicle position at initial moment t0; -column vector of estimates of space vehicle motions in the direction cosines determining the angular position of three pulsars.
EFFECT: provided high-accuracy determination of the space vehicle position practically at any distance from the Earth.
FIELD: rocketry, spacecraft engineering, possible use for detecting direction of bearing rocket in flight.
SUBSTANCE: satellite navigation equipment and three gyro-integrators simultaneously determine values of projections of speed vector in starting and connected coordinates system respectively and transfer determined values to onboard digital computing machine, which, using received information, determines values of angles of orientation of moving object in space in accordance to algorithm for determining orientation of moving object.
EFFECT: decreased dimensions of device for realization of proposed method down to 40x40x40 millimeters (without consideration for size of onboard digital computing machine) while maintaining precision for determining angles of direction of moving object to 4 angular minutes.
2 cl, 4 dwg
FIELD: railway transport; monitoring systems.
SUBSTANCE: proposed system designed for checking location of railway train has n navigational satellites, train, navigational receiver, parameter corrector, speed corrector, covered distance calculator, location calculator, insulated rail joint sensor connected with first input of parameter corrector whose second input is connected with storage unit. Third input of parameter corrector is connected with out put of location calculator. To corrected measured pseudodistances use is made of data base containing coordinates of insulated rail joints and points with fringe reception of signals, for instance, in tunnels.
EFFECT: improved reliability of location of railway train.
FIELD: railway transport.
SUBSTANCE: proposed repair team warning device contains "n" navigational satellites, dispatcher station consisting of receiving antenna, satellite signals receiver, computing unit to determine corrections to radio navigational parameter for signals from each navigational satellite, modulator, transmitter, transmitting antenna and computer of standard values of radio navigational parameters, movable object installed on locomotive and consisting of satellite signals receiving antenna, satellite signals receiver, computing unit for determining location of movable object, first receiving antenna, first receiver, first demodulator, matching unit, modulator, transmitter, transmitting antenna, second receiving antenna, second receiver and second demodulator, and warming device consisting of receiving antenna, receiver, demodulator, computing unit for determining distance between movable object, warning device, modulator, transmitter, transmitting antenna, satellite signals receiving antenna, satellite signals receiver and control unit.
EFFECT: improved safety of track maintenance and repair teams in wide zone of operation.
FIELD: the invention refers to radio navigation and may be used for solving the task of radio navigational determination of the coordinates and the speed of a moving object as a user of radio navigational information of the cosmic navigational system(CNS) in conditions of action of unfavorable geometric factor.
SUBSTANCE: the arrangement has four blocks of aboard equipment of navigational cosmic apparatus(NCA), two blocks of navigational equipment of the user(NEU), a block of correcting evaluations of the coordinates and the velocity component of the object, a demodulator, a receiver, two antennas, a block of computation of evaluations of the navigational equipment of the user each of which has two accumulating summation units with reset, a block of computing weight coefficients, nine blocks of subtraction, a meter of cycle impulses, eight elements «I», six blocks of remultiplication and a block of multiplication on a constant coefficient.
EFFECT: expands the functions of the arrangement.
SUBSTANCE: device for finding position of movable robot is made for précised finding of robot's position by means of calculating time being necessary to any ultrasonic signal generated by ultrasonic signal generating aids to reach movable robot. The purpose is reached due to moment of time during which moment the radio frequency signal is generated which signal is radiated by movable robot. Distance between movable robot and charge station is calculated on the base of calculated time for achieving the robot. Angle between charge station and movable robot is calculated on the base of computed value of distance as well s on the base of preset value of distance between ultrasonic signal generating aids.
EFFECT: improved precision.
8 cl, 3 dwg
FIELD: railway transport.
SUBSTANCE: proposed system has "n" navigational satellites, checking-and-correcting station determining information on satellites required for operation of railway train which contains navigational receiver and position computer. Checking-and-correcting station contains additionally input unit whose output is connected with second input of modulator and series connected section-between-stations computer, block section computer and interface unit whose output is connected with locomotive control system, section-between stations memory unit whose output is connected with first input of section-between-stations computer, second input of which is connected with output of position computer, block section memory unit whose output is connected with second input of block section computer whose third input is connected with output of demodulator.
EFFECT: improved accuracy of checking and safety of traffic.
FIELD: radio engineering.
SUBSTANCE: method can be used for detection and finding of on-ground radio-frequency radiation sources. Method is based upon receiving of radio-frequency radiation in N≥3 points being distant from each other is space, transmission of data to central point, determination of Rn(x,y) distance from any point of (x,y) space to any n=1,2,...Nth point of receiving of data, measurement of efficient values f voltage of received radio signals Un, transmission of the signals to central point where they are subject to transformation to spatial indeterminate function F(x,y). Availability of radiation and position of source are found from location and value of maximum of the function. Value and position of maximum of spatial indetermination are evaluated in neighborhood of point having coordinates to be equal to weighted average coordinates of reception points with weights being equal to measured efficient values of voltage of received radio signals raised to 4/p power. P parameter is determined while taking dependence of strength of source field into account on distance with standard value being equal to 1 or 2.
EFFECT: improved precision; increased efficiency; stabilization of false alarm level.
FIELD: applications of measuring apparatus or devices for track-building purposes.
SUBSTANCE: control method involves setting survey points and determining coordinates of above points in X, Y, Z coordinate system; placing measuring station near structure and determining measuring station position in X, Y, Z coordinate system relative at least one survey point; determining distance and angle between above insertion device and measuring station with the use of above measuring station; calculating insertion device position on the base of above distance and measuring station position; moving insertion device to provide coincidence of above members with predetermined member insertion points along insertion axis. Insertion device comprises lever, which may perform longitudinal and rotational movement in three mutually perpendicular directions. The lever holds members to be inserted in the base and comprises mirrors to determine positions of the lever and the members in three dimensions with the use of measuring station.
EFFECT: increased accuracy and speed of insertion device arrangement on the base, simplified usage and reduced cost.
11 cl, 5 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: invention relates to methods of continuous recording of spatial position of track gauge. Proposed method includes recording of information from pickups of rail-to-rail space, covered distance, current course angle, longitudinal and cross grades at vehicle running and calculating of current coordinates of track gauge using data of pickups. Recording of course angle and longitudinal grade from said pickups and determination of current coordinates Xi,Yi,Hi is carried out for one of rail lines relative by any initial direction in horizontal plane at measuring pitch 1. Coordinates of point im corresponding to middle of straightline section connecting extreme points i0 and in are calculated by measured coordinates of extreme points for each preset section of track Pi. Deflection of rail in horizontal and vertical planes, δihδiv respectively, is determined by difference between calculated coordinate of indicated point and measured coordinate of corresponding point. Device for determining spatial parameters of rail tracks has running truck including support wheel and first and second measuring wheels and odometer wheel arranged on one axle over one of rail lines. Support wheel is connected with measuring wheels by link installed at angle of 90° relative to direction of running. Track gauge width pickup is installed on said link. Distance pickup is mounted on odometer wheel. Course and roll indicator is installed on axle connecting measuring wheels. Outputs of distance pickups, track gauge pickup and course and roll indicator are connected with computer through controller.
EFFECT: enlarged functional capabilities, with possibility of determination of relative position of track section in vertical and horizontal planes (level and sag), together with determination of spatial coordinates.
3 cl, 3 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 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; 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.
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.
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; 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; permanent way facilities.
SUBSTANCE: invention is designed for checking parameters of track. Proposed track gauge contains housing, device for measuring gauge width with movable and fixed stops to thrust against rail heads, rail level measuring device and device to measure ordinates and grooves of switches. Including vernier with stop to thrust against head of move-off rail or counterrail and interacting with digital indicators on gauge housing. Vernier is provided with additional stop to thrust against non-worn-out part of rail head. Rail side wear detector interacting with vernier is installed on gauge housing.
EFFECT: enlarged operating capabilities of track gauge, reduced errors in measurement.
2 cl, 3 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