Inductive sensor reading and record the fact of the wheel
(57) Abstract:Usage: to record the fact of passage of the wheel over point on the path. The inventive device comprises a sensor element 1, is attached to the base 2 attached to the rails. The sensing element has the form of a plate of thermoplastic material sealed therein coils. 2 Il. The invention relates to railway automatics and telemechanics and can be used to record the fact of passage of the wheel.Known inductive sensor reading and record the fact of the wheel containing two coils, made each in the form of a single-layer spiral wire, placed one after the other in one plane at a General flat base included according to the signal current, and a counter for external electromagnetic interference fields, and forming the working area of sensitivity, limited their geometrical dimensions, and means for attaching the base to the rails.A disadvantage of the known devices are of low reliability and complexity of the operation.The technical result, which directed this invention is to increase natinalitat is achieved by in the inductive sensor containing two coils made each arranged in a single layer spiral conductor, placed one after the other in one plane at a General flat base included according to the signal current, and a counter for external electromagnetic interference fields, and forming the working area of sensitivity, limited their geometrical dimensions, and means for attaching the base to the rails, coils made of volume conduction and sealed by sealing on all sides in the environment of a thermoplastic material having a shape of a plate.In Fig.1 is a perspective view of the claimed device, and Fig.2 the location of the crest of the wheels and the surface of the sensing element when installing the sensor on the rail.Inductive sensor has a sensor element 1 having the form of a plate of thermoplastic material sealed therein coils. The plate is attached to the base 2 by means of screws 3 and additionally glued adhesive layer 4 for sealing connection of the conclusions of the sensing element with the supply cable 5. The base is fastened by bolts through holes for rail mounting. While the crest of the stake is Rani rail head and during a RAID of a wheel on a rail are in the area of the turns of the coils. INDUCTIVE SENSOR READING AND record the FACT of the WHEEL containing two coils made each arranged in a single layer spiral conductor, placed one after the other in one plane at a General flat base included according to the signal current, and a counter for external electromagnetic interference fields, and obrazuyuschie working area sensitivity, limited their geometrical dimensions, and means for attaching the base to the rails, wherein the inductor is made of volume conduction and sealed by sealing on all sides in the environment of a thermoplastic material having a shape of a plate.
FIELD: railway transport; instrument technology.
SUBSTANCE: proposed wear checking system contains optical receiving projection system and converting-and-calculating unit. It includes also car position pickup and car counter whose outputs are connected to inputs to inputs of converting-ands-calculated unit. Optical receiving projection system consists of sets of stereo modules. Rigid structure of each module includes two CCD television cameras and lighting unit. Outputs of stereomodules are connected to corresponding inputs of converting-and-calculating unit. Stereomodules are rigidly installed relative to each other.
EFFECT: enlarged operating capabilities.
3 cl, 2 dwg
FIELD: definition of the diameter of wheel pairs.
SUBSTANCE: the mode and photolaser arrangement for definition of the diameter of wheel pairs of a railway mobile train in conditions of its moving is based on the principle of measuring with the help of a photolaser arrangement of sizes which characterize the changing of the diameter of wheel tread and a degree of deterioration(wear) of the wheel pair band and also is based on the principle of computing the diameter of the wheel according to a wheel rolling circle according to the formula characterizing the changing of the diameter depending on current meaning of a chord of the wheel tread and the magnitude of a wheel tread wear. The execution of the mode of measuring of the chord and of the wheel tread wear is made by way of using of laser sources of light installed along one side of the track, horizontal and vertical photoreceiving mould "toolbars" installed on the other side of the inset in the rail and the track. Precision of measuring of geometric sizes of the wheel pair in the range of ±0.1 mm is achieved at the expense of using of laser sources of light and of photoreceivers in the shape of the mould "toolbars".
EFFECT: increases quality of precision of measuring; using of a laser commutation system and reliability of measuring elements under any weather conditions.
4 cl, 6 dwg
FIELD: railway transport; measuring facilities.
SUBSTANCE: invention can be used automatic control of condition of wheelset and its position relative to rail track. According to proposed method of monitoring of wheelset parameters and its position relative to rail track, working surface of wheel is radiated by light and wheel profile and position of wheelset relative to rail track is determined basing on received radiation. Scattered radiation from points on irradiate working surface of wheel is used with measurement of coordinates of said points, and, using received coordinates, completed profile of wheel is formed which is compared with standard profile of wheelset. Basing on results of comparing decision is made on whether wheelset can be operated or should be rejected.
EFFECT: possibility of monitoring irrespective of condition of surfaces under checking.
FIELD: transport engineering; rail vehicles.
SUBSTANCE: invention relates to measuring facilities and it can be used for checking condition of rail vehicle wheels 1. According to propose method, axle-box of wheel 1 to be checked and rail 3 with contrast mark 9 are exposed to flow of radiation, and image is received by radiation receiver. Radiator and matrix receiver are placed at a distance from rail track. Axle box and rail are irradiated with flow in form of train of short pulses with frequency proportional to wheel speed. Position of maximum of correlation functions obtained at correlation of standard fragment of image of axle box or rail mark with image in current frame is determined and changes in radii and parameters of wheel are judged by changes of vertical coordinates of maxima of correlation functions of axle boxes and rail in image frames.
EFFECT: improved reliability, enlarged functional capabilities.
2 cl, 4 dwg
FIELD: railway transport; auxiliary equipment.
SUBSTANCE: invention relates to device for checking condition of wheelsets of rail vehicles. proposed device contains optical measuring unit including optical measuring sensor made in form of laser focused radiation source 1 and optically mated linear radiation receiver 6 and also signal electronic processing unit. Device is furnished with prechamber 3 with nozzle 4 located before source of laser radiation coaxially with source and compressed air supply system connected with prechamber.
EFFECT: enlarged operating capabilities of device in contaminated atmospheres.
FIELD: railway transport.
SUBSTANCE: invention relates to method and devices for detecting slides on wheel roll surface. Surface of wheel is irradiated by laser beam. Information of presence and parameters of slide is found by comparing obtained sequence of profiles of flange top by changed distance between flange top and upper edge of rail. Proposed device contains optical measuring systems 1 and 2 connected with electronic information processing unit 3 arranged at a distance from one another to permit taking measurements of flange profile of one and the other half of wheel.
EFFECT: increased speed and facilitated measurements.
2 cl, 3 dwg
FIELD: railway transport; auxiliary railway equipment.
SUBSTANCE: proposed device for noncontact inspection of wheelset roll surfaces in motion has roll surface check pickup 4 of wheelset and wheelset flange check pickup 5 secured on bracket 6 installed on axle box and protected from precipitation by hoods 8 and 9, recorder connected with pickups, supply unit to form pulses, splitter box and tube 3 with wires. End of bracket on which pickups are secured is divided into two parts, straight-line one and curved one. Boss in form of right-angled trapezium is made from side surface of bracket. Gusset is made to render rigidity to connection of right-angled trapezium with bracket, said gusset being arranged both on side and end face parts of right-angled trapezium.
EFFECT: increased safety, reduced accidents in operation of rail vehicle.
FIELD: railway transport.
SUBSTANCE: invention relates to methods and devices for technological control. According to proposed method of dimensional checking of train parts on the run, rails are used as guide members setting trajectory of movement of part under checking, and also data processing system, optical measuring system whose distance pickups consist of radiator and receiver designed for recording backscattered radiation. Measuring pickups are arranged in space at both sides relative to guide member on additional vibration-isolating base, measuring system is secured stationary, moment of train approaching is recorded and identification of car is carried out, measuring pickups are calibrated, measuring pickups are synchronized with guide member position pickups and moment of intersection of area of measurement by part is determined. Moment of intersection of area of measurement by part is determined in one and the same position of part relative to guide member. Then measured surface of part is scanned in direction of part movement, measurement is done along line of scanning in one direction, data are gathered and processed taking into account weight of car, corresponding deflection of rail and speed of train. When processing the data, angle of attack of wheel on rail and deformation of rail at moment of taking of measurement are taken into account additionally, the moment id recorded when part under measurement leaves area of measurement, and required parameters of part are determined. According to invention, complex of dimensional checking of train parts on the run includes train approach moment pickup, pickup recording moment when part under measurement leaves are of measurement, vibration-isolating base for fastening the pickups, pickup determining position of part relative to guide member and synchronizing device for time gating of readings of all pickups. Optical measuring pickups are arranged in space at different sides of guide member, are provided with calibration device and made for scanning all surface of part to be measured. Receiver of distance pickups is provided with at least one quick-acting position sensitive photodetector. Rail displacement pickup is made with possibility of checking deformation of rail.
EFFECT: increased accuracy of measurements.
3 cl, 1 dwg
SUBSTANCE: invention relates to the equipment for measuring railway rails and wheels. The method of determination of the clearance between the railway wheel ridge (2) and rail head (1) includes attaching a pickup with its sensitive element directed towards the point of contact between the wheel and rail head to a crosswise beam (3) of the car truck. Simultaneously with the start of the car, the data coming the pickup on displacement of the wheel ridge relative to the rail head at a preset distance is continuously recorded. Then the pickup is removed from the car, the data carrier is removed from the pickup and the data obtained is processed using a computer programme to provided for a digital visual picture. On the picture thus obtained, a video image of a ruler with divisions is imposed to define the abode said clearance in divisions of the ruler. The said device has a case with a core, a pickup and light sources arranged on both sides of the pickup at an equal distance from it.
EFFECT: simpler design and smaller sizes of the device.
3 cl, 4 dwg
SUBSTANCE: method of railroad wheel pair contact surface wear monitoring proceeds from the measurement of the rail vertical vibration acceleration effected using an accelerometer and comprises converting the said data into electrical signals to be compared to reference signals corresponding to permissible defect tolerances. The method includes, additionally, measuring the wheel rim vertical travel along the contact surface development length by means of consecutively arranged magneto electric pickups, establishing the dependence of the induced signal magnitude upon the wheel rim position and comparing the resulted ratio with the defectless wheel reference data. The results obtained are correlated to the wheel pair linear speed to disclose, finally, the wheel defect size.
EFFECT: accurate measurement in wide range of train speeds.
FIELD: railway transport; traffic control.
SUBSTANCE: invention relates to organization and control of traffic, namely, to track devices interacting with train and set into action by magnetic devices when necessity arises to fix moment of passing of wheel set along preset section of track. Proposed track transducer contains rectangular-shape magnetic circuit whose length is equal to distance between necks of opposite rails of track section. End faces of magnetic circuit are in contact with necks of said rails. Electric circuit, consisting of series-connected inductance coil and resistor, is connected to ac voltage source, and analog-to-logic signal converter is connected in parallel to resistor. Resistance of magnetic circuit of track transducer consisting of magnetic circuit, rails and wheel set does not depend on mass and geometrical dimensions of flanges, so functioning of track transducer does not depend on parameters of flanges.
EFFECT: improved reliability of track transducer in operation.
SUBSTANCE: device incorporates two separate induction loops (IL) laid in the track prism along the tie edges and in tie boxes ahead and behind the point. The length of every separate induction loops exceeds the distance between the wheels of adjacent cars and is smaller than the car minimum wheel base, that between separate induction loops is also smaller than the car wheel pair base, while the total IL length corresponds to the preset length of the point section. The IL is connected to the floor-mounted electronic unit with its two channels comprising a DC pulse generator and a receiver-reflected signal analyser discerning in intervals between pulses the signal of various train parts. In compliance with the first version, the data on cut of cars is used directly in-situ without transmitting it over long ranges. In compliance with the other version, the aforesaid data is transmitted over long ranges. The floor-mounted electronic unit is connected, via two-wire cable line with the station electronic unit. The data from the floor-mounted unit is transmitted by varying certain-frequency supply current magnitude and the relative pulse duration.
EFFECT: preventing the point shifting under rolling stock and higher efficiency.
2 cl, 7 dwg
FIELD: transportation, physics.
SUBSTANCE: inductive-wire sensor contains measurement oscillator the input of which is connected with inductive stub and the output is connected to object presence detection circuit (PDC). In the first version, PDC contains connected in series mixer the input of which is the input of PDC, filter and threshold device, connected to the first input of controller the second input of which is connected with temperature sensor, at that, one of controller outputs is connected with the first input of reference oscillator and pulse oscillator is connected to the second input of reference oscillator and to the third input of controller, at that, threshold device output is the output of PDC. In the second version, PDC contains comparator and processor connected in series, at that, the comparator converts entered signal into pulse and brings it up to the level necessary for processor which detects the presence of signal from measurement oscillator and analyses frequency time variation. The sensor may contain two PDCs connected in parallel between measurement oscillator and summing unit. PDC may contain watchdog timer, indication device or level converter.
EFFECT: device reliability enhancement and providing safety of shunting operations.
10 cl, 3 dwg
SUBSTANCE: invention is related to track devices that interact with train and are actuated by means of magnetic facilities, when it is necessary to register moment of wheelset travelling in specified section of track. Device comprises rectangular magnetic core with induction coil wound on it, which is installed between internal journals of rail track rails, source of AC voltage, resistor and converter of analog signal into logical one, connected to induction coil. Between ends of rectangular magnetic core and internal journals of rail track rails, there are inserts installed made of ferrorubber.
EFFECT: improved reliability of path-control transducer operation.
3 cl, 1 dwg
SUBSTANCE: invention is related to railway automatics and telemechanics and is intended for control of transport vehicle availability within the limits of a ceratn path section. Path-control detector comprises sensitive element in the form of loop circuit laid inside rail track and connected to control equipment. Sensitive element additionally comprises switching block, to contacts of which loop circuit ends are connected, to make induction coil, at the same time loop circuit comprises at least two fixation devices and is fixed to rail with the possibility of pressing, with the possibility to control position of loop circuit on rail with further final fixation and stopping. Device for fixation of detector sensitive element comprises bracket rigidly connected to pin, on which tab and stopping element are fixed. Tab is equipped at least with one element that provides for its fixation to rail and grip that presses sensitive element; bracket is equipped with hook intended for rigid connection to rail and providing for fixation with rail foot; pin is equipped with elastic element that creates tension, installed via orifices between tab and stopping element.
EFFECT: improved reliability of device fixation on rail.
5 cl, 5 dwg
FIELD: instrument making, railway equipment.
SUBSTANCE: invention relates to track devices incorporating with rolling stock and driven by magnetic or electric means. Proposed device comprises magnetic core with induction coil connected to measuring circuit. Rectangular "П"-like magnetic core is arranged parallel to railhead axis, and its length is selected subject to wheel diametre, AC generator frequency and rolling stock speed. Rectangular magnetic core width should exceed that of wheel flange. Aforesaid induction coil is connected, via magnetic field, with wheel flange and, via current resistor, with AC voltage generator of measuring circuit. Note here that analog-to-logical-signal converter is connected in parallel to aforesaid current resistor to send signal into axle counting system.
EFFECT: higher reliability and expanded performances.
SUBSTANCE: invention relates to railway automation and telemechanics. Method for remote detection of passage of rolling stock wheel pairs involves changing in magnetic conductor by means of wheel magnetic flux, transformation of last information signal and its perception by fact of detection thereof. Information signal used is radiation flux in a light guide, part of magnetic conductor is made of magnetic fluid, and radiation flux is transformed by varying dispersion thereof in environment by moving magnetic fluid relative cladding-free core of light guide.
EFFECT: broader functional capabilities.
4 cl, 3 dwg