Detection of rail trucks rolling stock, causing in the process of exploitation reinforced side wear of the rail and the wheel flange lubricators
(57) Abstract:The invention relates to methods of diagnosing technical problems with trucks rolling stock. The inventive method consists in determining the set on the path measuring device valueslandpon each wheel of the pair of wheels of the truck and amount of wear during their passage through the device with remembering the sequence number of each wheel pair in this part, the definition for each of these quantities characterizing the ratio of difference between wears and one other wheel of the pair to their sum and comparing it with the preset, in the case of exceeding of which the cart with a serial number of this wheel pair are separated from the stock and send for analysis of the causes of defects and their elimination. The method allows to identify trucks with defects as knots wheelset, and other sites. The invention relates to methods of technical diagnostics of trucks rolling stock.Causes of lateral wear of wheel flanges and the side rail wear in curves of small radius, the ambiguous, the individual case and is undetectable by visual inspections of trucks on different combs wheels reinforce the lateral wear of the rail head, and rails, with increased lateral wear even faster wear out wheel combs. The initiators of these processes is the rolling stock, because only when it is in motion there are side effects of wear ridges.There is a method of identifying trucks rail vehicles, causing in the process of exploitation reinforced lateral wear of the rail and the flange of the wheels, which consists in the fact that measured on the same height level of the thickness of the ridges of the left and right wheels of the pair of wheels of the trolley moves through the control area and determine the amount of wear by comparing the measured values with the project, the results of which are judged on the presence of the defect.The known method does not provide the possibility of identifying trucks with a combination of a number of faults, in addition to other wheelsets nodes truck.The elimination of this drawback derives from the fact that in the proposed method, detection of rail trucks rolling stock, causing in the process of exploitation reinforced lateral wear of the rail and the flange of the wheels, which consists in the fact that measured on the same height level of the thickness of the ridges of the left and right wheels of the pair of wheels of the truck in the process is to design, the results of which are judged on the presence of a defect, thickness measurements of wheel flanges and the determination of their wear is carried out in the process of moving the control section of the rolling stock, while additionally determine and memorize the serial number of each pair of wheels in rolling stock and for each value, which characterizes the ratio of the difference between wears and one other wheel of the pair to their sum, which is compared with the set, and in case of detection in rolling stock truck with a pair of wheels, in which the value of the above-mentioned relationship is more specified, a cart with a serial number of this wheelset is directed to analysis of the causes of the defect and fix them.It is established that all trucks rolling stock trigger the same serviceable the effect is, among trucks operated rolling stock there is always such that intensively with the process side wear of wheel flanges. Therefore, these trucks cause especially heavy wear of rails and got out of service transmitted in repair.The invention provides the possibility of detecting in a maintained Park of rolling stock trucks crews, causing particularly high is operated vehicles. The exclusion of trucks from the existing fleet of rolling stock will significantly reduce the lateral wear of the rail and the flange of the wheels in the remaining part operated trucks.It is known that the intensity of the lateral wear of wheel flanges and the side rail wear are determined by the forces acting in the contact of the wheels and rails, angles of crowding of wheel flanges on the rails and the length of the path which are above the power on the rails at high angles of crowding of wheel flanges on the rails.Found that for some pair of wheels of railway vehicles, even in the straight sections of the path, pass the greater part of its path in percona state relative to the longitudinal axis of the truck, i.e., they do not occupy a radial position in the wheel and not perpendicular to the longitudinal axis of the truck.Reasons percenage provisions wheelset in the cart can be distinguished by the size of the base frames have the same truck, large values of longitudinal (along the path) gap between values wheelset and axlebox guides bogie frames, different diameters of wheels wheelset, significantly different forms of Bicycle wheels at the same wheelset, aemmer.Definition of angles percenage movement of the wheelset on the track due to the complexity of measurement in the operational environment of very small angles of rotation of wheel pairs from the perpendicular to the axis of the truck (about 30-90 minutes of arc) is not feasible. Therefore, the movement of the wheelset on the track with the skew is not only a cause of increased on her side wear of wheel flanges, and are caused by enhanced lateral wear of rails, but a symptom of some other fault.Always value the lateral wear of the ridges on the various wheels of the same pair of wheels differ from each other; the value of the lateral wear of the ridge more on the wheel of the pair of wheels on which a force in contact with the wheel flange and rail, the angle of crowding crest on the rails and the length of the path on which the comb is pressed against the rail head more than on the opposite wheel.Therefore the difference in the values of the lateral wear of wheel flanges of the same wheelset, referred to the average value of the wear of both of these wheels is characteristic of this pair of wheels on its harmfulness in the education side of rail wear, and therefore the lateral wear of the ridges of the other colonese indicates the specific malfunction of this truck, defining caused by the processes of lateral wear of wheel flanges and rails.Therefore, an effective way to recognize and identify operated in the Park trucks cars and locomotives, causing intense side wear of rails, having a large intensity of the lateral wear of wheel flanges and cause increased lateral wear of wheel flanges on the other of the wheel pairs, including on other crews (through reinforced side rail wear) is the following sequence of actions:
Measurementlandpthe thickness of the ridges of the left and right wheels of each wheel pair of carriages passing along the way through the device installed on this path, for the production of such measurements; these measurements should relate to the same specified height level of the ridges above the rolling surface of the wheels;
Fixation using a counting device sequence in the course of the composition of non wheelset, which are specified in paragraph 1 dimensions (with subsequent breakdown of their ordinal numbers of trucks and crews);
The conversion specified in paras.1 and 2 information into electrical signals and transmitting this information in the computer that is connected to mentioned is her by the formula (io- whereaboutand design and izmereniya the thickness of the comb;
The calculation on the same computer relationships =ilip)/(il+ ip)| for each pair of wheels, where ipand ilaccordingly, the wear amounts of the right and left ridges of the same wheelset;
Mapping on the computer the absolute value with the allowable value 
The issuance of the computers on copropagate. serial numbers of crews in the composition, numbers of trucks in the crew room of the pair of wheels in the cartpandlthe thickness of the ridges of the right and left wheels of each wheel pair, the lateral wear and marks on the compliance value set normatic 
Allocation to a special path for completion of the special survey crews, in which at least one wheel pair will be >  <  where  is minimum admissible thickness of the ridge.Full technical inspection of trucks sorted crews.In the process full technical survey check
the identity values of the dimensions of the base of the right and left frames of each truck;
compliance with the tolerance of the longitudinal and transverse Rysbekov axlebox node axlebox guides;
the correspondence is between the various wheels in the whole cart;
in a rambling trucks specified values are gaps in those wearing the nodes and elements of the truck, which depends on the magnitude of the distortions wheelset and races RAM truck relative to each other, the allowable values (for example, in trucks of the type CRI-X3 wear in the V-system, leaf spring suspension and axle-nodes;
the specified values and tolerances table and damping (friction) force resistance to rotation of the bogie relative to the frame or body of the crew, as well as differences in these values when turning the truck in all directions.
compliance with the permissible norms of wear and damage of the support body on the truck (pivot node, sliders and other elements of its connection with the body, which can lead to pereconomy the position of the truck relative to the body or increase the values guiding efforts on track.Based on the results of examination decisions on the composition and volume of repair truck.With long-term Parking of rolling stock on stations or repair with no the above automatic measurement of the thickness of the crests of the wheelsets and the computer listed above in the description of the proposed global survey trucks) can be carried out using known measuring templates and computational tools. DETECTION of RAIL TRUCKS ROLLING stock, CAUSING IN the PROCESS of EXPLOITATION REINFORCED LATERAL WEAR of the RAIL AND the flange of the WHEELS, which consists in the fact that measured on the same height level of the thickness of the ridges of the left and right wheels of the pair of wheels of the trolley moves through the control area and determine the amount of wear by comparing the values with the project, the results of which are judged on the presence of a defect, characterized in that the measuring thickness of wheel flanges and the determination of the quantities of wear is carried out in the process of moving the control section of the rolling stock, while additionally determine and memorize the serial number of each pair of wheels in rolling stock and for each value, characterizing the ratio of the difference between wear one and the other wheel of the pair to their sum, which is compared with the set, and in case of detection in rolling stock truck with a pair of wheels, in which the value of the above-mentioned relationship is more specified, a cart with a serial number of this wheelset is directed to analysis of the causes of the defect and fix them.
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.