Mobile flaw detector servo drive centering device
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.
The claimed technical device relates to the field of rail transport, in particular to the special mobile assets equipped with instrumentation to check the status of the path, and is intended to ensure the quality of rail flaw detection at high velocities of the mobile detector.
A device truck carrier, which is made of two independent single axle trucks, the frame of each single axle truck connected parallelogram mechanism with a common frame, and the witness is in the witness wheels, dont forget the witness of the opposite wheels single axle trucks hinged longitudinal beams with the mechanism of lifting-and lowering mechanism, correction, diagnostic device, wherein the longitudinal beams fixed with the possibility of angular and axial movement uniaxial trucks, this site compensate for the offset axis of the bogie relative to each other is, for example, a spherical joint, which is fixed to the linear bearing in the inner cavity of which set the end of the longitudinal beam, and a correction mechanism offset seekers associated with sensor movement control servo wheels (patent RU No. 2309077; published 27.10.2007; IPC B61K 9/08; "Cart-carrier").
However the com of the known device is reduce the quality of diagnosis in high-speed trolley-carrier mobile detector, as well as the need for time-consuming maintenance.
For the prototype of the proposed technical solutions adopted centering device pleading look mobile detector, comprising driving the truck, on the transverse frame which is installed on the drive movement of the rolling element contact elements pivotally connected to the guardrails witness skis and located between the guardrails, the ends of which are located between the paddle wheels wheelset undercarriage, the device is equipped with an intermediate link and a lever, and a movable link contact elements mounted on the intermediate element by means of a hinged connection, the axis of rotation which is parallel to the axis of the hinge connecting the movable link with guardrails, and levers connected to the frame of the undercarriage and guardrails through hinge joints axes of rotation which are parallel to the axis of the hinge connecting the movable link with guardrails, and each hinge securing the lever to the frame of the undercarriage posted on turning around the horizontal axis of the housing, the lever is located on the axis of this hinge can move along the axis in a linear guide parallel to the axis of the hinge mounting of rolling element to an intermediate element made in the form of a lever mounted by hinge soy is inane on the frame of the undercarriage, in addition, the movable link is made with adjustable stops (the patent for useful model RU # 38708; published 10.07.2004; IPC B61K 9/08; "centering Device pleading look mobile detector").
The disadvantages of the prototype is the complexity of the design and the associated low reliability of the centering device.
With increasing speed of the mobile detector known device does not provide the necessary quality control devices and the reliability of the performed measurements, which is due primarily to the necessity of a witness skis, which requires high complexity of its installation and operation.
The complexity of the use of the witness skis are expressed also in the issue of passing turnouts, possible deviations in the dynamic impacts, including impacts, the need for a dynamic contact with a dirty surface of the rail, which significantly degrades the quality control process.
At high speeds of movement of the mobile detector the device performance alignment is significantly reduced without providing, in particular, the required accuracy and performance, which leads to lack of control of individual sections of the rail, not subjected to quality testing.
Accelerated wear of tordos the face inserts, installed on the witness ski, reduces the accuracy of centrifuge pleading look of the system relative to the longitudinal axis of the rail.
The objective of this technical solution is to simplify the design and improve the quality condition monitoring of railway track at high speed mobile detector.
The problem is solved due to the fact that the centering device tracking system mobile detector relative to the longitudinal axis of the rail seekers equipped with a centering device, made in the form of permanent magnets placed end sides of each selector on carriages lateral movement, kinematically connected with seekers and installed on the guide rods rigidly connected with the carrier beam suspension tracking system.
The presence of the centering device is necessary to ensure seeker optimum position above the rail in the process of monitoring, which allows to improve the quality testing to improve the performance and reliability of the device as a whole.
Performing a centering device in the form of permanent magnets placed end sides of each selector, greatly simplifies the design, allowing you to eliminate the need for bulky difficult drive for correction is ogene seeker and the need for its regulation and adjustment tools.
The placement of the permanent magnets of the device to self-align with the end sides of the finder so that in the initial position of their longitudinal axis and the longitudinal axis of the finder are in the same vertical plane with the longitudinal axis of the rail, provides for the creation between the magnets and the head rail by magnetic forces, which, due to the commitment of permanent magnets to the original position, creating a magnetic return force when the deviation of the seeker from the original optimum position, thereby providing the effect of centering the seeker.
The presence of carriages mounted on the guide rods associated with the carrier beam suspension, allows lateral movement relative to the longitudinal axis of the rail.
The presence of kinematic link finder with carriages lateral movement provides stabilization of the position of seeker, guiding the seeker of the offset provisions in the original, due to the recoil strength of the magnetic field of permanent magnets.
The process of centering the operating position of the selector increases the efficiency of the welding research by increasing their credibility with a simultaneous increase in the moving speed of the mobile detector.
The proposed device is self-centering allows you to refuse the t of the contact elements of the track rail in the form of witness skis or witness wheels carrying out non-contact centering seeker, providing a significant advantage of this device in the movement and overcoming turnouts at high speeds.
The presence of the distinguishing features of the claimed technical solution allows to make a conclusion about its compliance with the conditions of patentability of "novelty."
The condition of patentability "industrial applicability" is confirmed on the example of a specific implementation.
The invention is illustrated with technical drawings, on which:
figure 1 - shows a General view finder device with self-centering;
figure 2 - side view of figure 1;
figure 3 - General view of the device in a perspective view;
figure 4 is a bottom view of the end portion of the finder and the centering device in a perspective view.
Figure 1 shows the supporting beam 1 servo system for mobile detector, which by means of brackets 2 are rigidly fixed on the trolley mobile detector (not shown).
The tracking system mobile detector contains seekers 3, which establishes the transducers monitoring devices and are in the process of testing moved over the rolling surface of the rail head 9.
On both sides of the front parts finder 3 posted by permanent magnets 4, attached by means of brackets 5 the levers 6 on the carriage 7 (2) lateral movement. The carriage 7 is installed on the guide rods 8 (figure 4), with the possibility of movement in a direction transverse to the longitudinal axis of the rail 9 (Fig 1).
Finder 3 is suspended on the rods 10 of the power cylinder 11 of the vertical movement mechanism of the finder 3.
The power cylinder 11 mounted on the carriage 7, forming a kinematic relationship seeker 3 with the carriage 7 for its lateral movement.
The guide rod 8 to move the carriage 7 spaced from each other by a distance which provides accommodation and rigid fastening on the carriage 7 of the power cylinder 11, the free end of the rod 10 which is connected with one end of the finder 3, with a fixed converters.
The centering device is set so that the initial stable position before operating the longitudinal axis of the permanent magnets 4 and the longitudinal axis a pleading look beam 3 is placed in the same vertical plane with the longitudinal axis of the rail. In this optimal position transducers monitoring devices ensure maximum reliability of results.
To get started permanent magnets 4 on the bracket 5 is turned relative to the levers 6, transferring them from the top of the transport position in the lower working position, establishing permanent magnets 4 on the rail 9 by small the gap, determined by the magnetic field between them.
The operation of the centering of the servo system is that in the process of moving a mobile detector, placed on a track vehicle, when the external dynamic pressure shift pleading look system from its original position, the strength of the magnetic field existing between the rail 9 and the permanent magnets 4, force magnets 4 to return to its original position relative to the longitudinal axis of the rail 9.
Rushing from the shifted position in the source, the permanent magnets 4 carry the carriage 7, which, easily moving along the guide rods 8 and being in kinematic connection with the finder 3, return seekers 3 of the offset in the original optimum position, thereby ensuring their centering.
In permanent magnets 4 under the action of magnetic fields arise recoil force that is always directed towards the original equilibrium and depends on the magnitude of displacement of the seeker and the magnetic-eld strength, i.e. acts peculiar magnetic spring device, centering.
Lateral movement of the selector 3 in the process provide a carriage 7 which, being in kinematic connection with the finder 3, allow him to return from a biased Ref is the initial optimal position by moving the carriage 7 along the guide rods 8.
Rod 8 is rigidly fixed with their ends in bearing beam 1 is mounted by means of brackets 2 on the trolley mobile detector, which in the process control moves along the track.
The power cylinder 11 vertical movement of the finder 3, mounted on the carriage 7 and its associated rod 10 with the finder 3, provides the kinematic relationship of the seeker 3 with the carriage 7, the transverse movement of which causes the strength of the magnetic field of the permanent magnet 4, the recoil forces which are constantly striving to bring back the seeker 3 from position offset in the original optimal position of the control.
The magnetic forces between the rail and the magnets are permanent and do not require additional devices, drives and external control, thereby providing a continuous process of self-centering seekers in the process of implementation of the inspection of rails.
Return the strength of the magnetic field does not depend on the influence of external factors such as temperature, humidity, dirt and ice on the surface of the rail, which distinguishes the considered device from contact devices centering a pleading look systems, largely dependent on external factors.
Testing of these units are in low temperatures, ice and high snow cover area under the adopted his quality work, in contrast to the results of the use in similar conditions known analogues.
Permanent magnets that do not change their performance within their service life, ensure the stable operation of the centering seeker and provide high efficiency testing at high speeds of movement of the mobile detector.
The centering device tracking system mobile detector relative to the longitudinal axis of the rail, characterized in that the seekers equipped with a centering device, made in the form of permanent magnets placed end sides of each selector on carriages lateral movement, kinematically connected with seekers and installed on the guide rods rigidly connected with the carrier beam suspension tracking system.
SUBSTANCE: proposed system comprises data collection device mounted at rolling stock head and consisting of microcontroller whereto connected are transmitter, receiver and data output unit, transceiver module arranged at rolling stock tail and comprising transmitter and receiver, transmitter being connected via intercom line with data collection receiver. Measuring module is arranged on controlled track section. Said measuring module consists of receiver with its output connected to power accumulator, transmitter with its input connected to microcontroller output with its input connected via interface with vibration and temperature pickups. Vibration pickups are secured to rails or sleepers of controlled track section. Temperature pickups are secured to controlled track section rails. Power accumulator output is connected to microcontroller and transmitter supply inputs.
EFFECT: higher validity of control.
SUBSTANCE: invention relates to control instruments. Proposed system comprises radiation source 2 and signal processor 3 and photo receiver 1 made up of level transducer 21 and receiving analyser system 11 including lens 13 and position-sensitive optical radiation receiver 15, arranged on control truck 9 arranged on track 10. Output of photo receiver 1 is connected to input of signal processor 3. Radiation source is arranged on at least one contact-wire line support 4 or other structure, and is made up of reference mark containing at least two modulated light diodes 5 and photo receiver (b) and radiation source control circuit connected to independent power supply input 7. Photo receiver unit comprises extra receive-and-analyse system 12, control module 17 including at least one light diode radiator 18, photo receiver 18 and data signal processing circuit 20 with its output connected with input of second processing unit 3 with third input connected to level transducer 21 rigidly coupled with photo receiver 1.
EFFECT: higher accuracy of measurement.
SUBSTANCE: invention relates to railway transport. Proposed method comprises measuring rails spacing by means of contact and contactless (laser) metres. Distances between rails measured by contact and contactless metres are compared. If discrepancy in readings of said metres falls below tolerance, mean arithmetic values is entered into memory. If discrepancy in readings of said metres exceeds tolerance for straight track section, readings of contactless metre are entered in memory. In control track curved section, track curve radius is defined.
EFFECT: higher accuracy of control.
6 dwg, 2 ex
SUBSTANCE: set of inventions relates to railway transport. Proposed method comprises measuring rail profile, track gauge and distance to rails with the help of beams of two laser senders arranged on track-tester car platform above the rails. Measured data is entered into onboard computer memory together with data on run time to determine departure from preset values. Laser senders are secured to turn around. Turn of laser senders is synchronised. Proposed track-tester car comprises two laser senders secured on car platform above the rails and connected via controller to computer. Said senders encased in protective enclosures arranged to turn relative the axis perpendicular to lengthwise axis of senders and are connected with, at least, one drive, e.g. hydraulic cylinder with rod.
EFFECT: higher accuracy of measurements.
11 cl, 10 dwg
SUBSTANCE: invention relates to railway transport. Proposed device comprises transducer of distance covered and displacement transducer to measure distance between rails, controller, processor and storage unit mounted on truck. Said truck comprises measuring rule with support and measuring wheels articulated with platform by means of hinged tie rod. Measuring wheel is spring loaded in direction opposite the support wheel and fitted on axle that can axially displace to get in contact with displacement transducer. Hinged tie-rod comprises pins coupled with angular turn transducers electrically connected with processor.
EFFECT: higher accuracy of measurements.
4 cl, 9 dwg
SUBSTANCE: invention relates to measuring technique, particularly to means of diagnostics for transport facilities with ICE and can be used at self-propelled special rolling stock used for repair and maintenance of railways in operation. Proposed system comprises microprocessor, interface between microprocessor and serial data transfer channel, tank fuel level metre, ambient temperature metre, transport facility assembly units and part performances control unit, location determination unit, sound synthesiser unit, unit to store data and transfer them to dispatcher station, multifunction display and microprocessor switching and control unit. Besides onboard diagnostics system comprises operating conditions determination unit and process conditions determination unit, both being communicated via microprocessor with unit to store data and transfer them to dispatcher station.
EFFECT: expanded performances, higher quality of railroad repair.
SUBSTANCE: invention relates to railway transport and can be used to control track state, namely for measuring dynamic deformability of rail bed and possible deviations of track. Proposed method comprises measuring track width with the help of optical pickups mounted on track measuring car and revealing defects of track attachment. Said optical pickups are mounted on track measuring car in three zones corresponding to different zones of load said car applies onto track in motion. Track width is consecutively measured by said optical pickups of every said zone. Two of said pickups are arranged on car ends and one is arranged between car running wheels. Track attachments defects are revealed allowing for measurements results provided by pickups of aforesaid three zones. All pickups are arranged in one plane. Optical pickups inquiry is performed at spacing making at least 25 cm in motion along track.
EFFECT: higher accuracy and reliability of control.
4 cl, 2 dwg
SUBSTANCE: opto-electronic system for monitoring spatial position of a railway track includes at least one radiation source, a measuring bogie mounted on the rail track on which there is a processing unit and a photodetector unit, optically connected to the radiation source. The radiation source can be installed on structures moved out of the boundaries of the rail track and lying on the path of the measuring bogie. The photodetector unit has two reception and analysis systems, a tilt sensor of the photodetector unit, a control module whose output is connected to the input of the processing unit, and other input to the output of the tilt sensor of the photodetector unit, and an indicator for movement of the measuring bogie past the radiation source, whose output is connected to the input of the control module.
EFFECT: increased accuracy of measuring spatial position of a railway track and possibility of monitoring the design position of the rail track simultaneously in two mutually perpendicular directions.
6 cl, 2 dwg
SUBSTANCE: method of monitoring a railway track involves steps on which: a line is illuminated from one end of the railway track to another; part of the light reflected from the track is received; a set of images are generated; the set of images is analysed; the set of images is compiled; corresponding geographical locations of the images are recorded; physical characteristics of a part of the railway track is displayed. A system which realises the method of monitoring a railway track and which is installed on a vehicle includes: at least one light source which is a laser lying next to the railway track for projecting a light beam from one end of the track to the other, one optical receiver lying next to the railway track. The optical receiver has a digital camera, one processor for analysing the set of images and determining geographical location of the set of images. The processor can compile the set of images and record the corresponding geographical location of the set of images.
EFFECT: simplification of the procedure of monitoring the state of a railway track.
70 cl, 12 dwg
FIELD: metering equipment.
SUBSTANCE: invention is related to the field of instrument making. Device for contactless collection of information on internal defects of rail at any depth of their location inside rail comprises SHF generator, detector, indicator, antenna, serially connected low pass filter, signal amplifier, analog-digital converter, storage device and neural computer. SHF generator is represented by autodyne transceiver, which is connected to antenna and detector input, and output of neural computer is connected to indicator. In process of rolling stock motion vibrating surface of rail is radiated with electromagnetic waves of SHF range, reflecting from which, SHF electromagnetic waves are received by transceiving antenna. Phase detection is used to extract signal that contains information on parametres of rail vibration, which is compared to reference signals stored in device memory. In order to make decision on defects in rail, comparison circuit is used on the basis of neural computer algorithm.
EFFECT: improved efficiency of monitoring.
2 cl, 1 dwg
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.