The method of determining the position of the railway track in terms of circular curves
(57) Abstract:Usage: definition of gauge clearance between the crest rail and the wheel with the registration of rolling stock in the circular curves of the railway track. The inventive method is that when moving the vehicle along the path measure the angles of rotation of its driving trucks relative to the base vehicle. These undercarriage without Rysbekov wheelset axles, is set to the maximum skew and define a rut, limited the side of the head of the outer rail and a crest wheel ratio, ukazannogo in the formula. 3 Il. The invention relates to railway transport, in particular to methods of continuous recording track clearances when copying rolling in a circular curves railroad tracks, and is intended for use in scientific studies of geometric fit, processes of interaction between the crew and the railroad tracks, and control the rail of railroad track in the plan.There is a method of determining the position of the railway track in terms of circular curves, namely, that Opredelenie the angles of rotation of the bogie relative to the base vehicle  . The disadvantage of this method is that the measuring of the position of the tramways in the plan and gauge requires the use of special pasture with a special track measurement (single axle trucks) are complex mechanical system with the use of pneumatic cylinders in addition, in the measurement process requires constant contact of the rollers with the rails, which significantly reduces the reliability and efficiency of the measuring system. To ensure measurement requires six sensors. It is necessary to pay attention that this car potenzmittel able to register the curves are plots of small size by tram, and not crooked ways IPU and Protransporte, the car is not capable of logging curves over 1200 m in Addition, the position of the trolley on the track indefinitely due to the presence of a free gap - the difference in width between rail and wheel track. To compensate for the uncertainty of the position of the truck applied the sensors linear uniaxial trucks. Is trying to make the algorithm external and internal threads of the way. But this method does not take into account the uncertainty in the kinematics of the device and track gaps in the curve.sebnem wheel.This is achieved by the fact that in the method of determining the position of the railway track in terms of circular curves, namely, that determine the position of the path in terms of moving vehicles, including two trucks, and measured the angles of rotation of the bogie relative to the base vehicle, truck without Rysbekov wheelset axles, is set to the maximum skew and define a rut, limited the side of the head of the outer rail and a crest wheel ratio
= and (C-p, where is the total gap by widening the track;
and half the base truck;
p- the angle of rotation of the front truck in rads;
C- the angle of rotation of the rear truck, I am glad.In Fig. 1 shows a block diagram of the device of Fig.2 is a connection diagram of a contactless sensors of this device; Fig.3 is a diagram of the operation of this device.P R I m m e R. When measuring the gauge of the gap in the circular curves of the railway track in terms of using locomotive TGM-4, in which the carriages are not cross Rysbekov wheelset. The undercarriage of this vehicle are in the position of maximum misalignment when MT frictional forces between wheels and rails. On the trucks of the locomotive set housing contactless inductive sensors type ID 3IYX, motile rods which are fastened to the frame body, measure the angles of the axes of the trucks relative to the axis of the base of the locomotive.According to the scheme (Fig. 1) proximity sensor 1 produces an electrical signal proportional to the rotation angle of the front of the truck relative to the car body of the locomotive. The signal is sent to the divider 2 voltage of the operational amplifier 3, operating in the inverter mode, via an input resistance 4. Operational amplifier 3 is made by the serial scheme, supplemented by resistance 5 feedback. The inverted signal is input to divider 6 voltage across the input resistance 7, the first input of the operational amplifier 8 mode adder with inverted. The sensor 9 generates an electrical signal proportional to the angle between the axis of the rear truck and the axle body of the vehicle relative to the king pin of the rear truck. The signal is sent to the divider 10, the voltage of the second input of the operational amplifier 8 through the input resistance 11. Operational amplifier 8 is executed by the serial scheme, supplemented by a feedback resistance 12. Output operationnal the part of the body. The electrical signal at the output of the device is proportional to the gauge gaps in the circular curves of the railway track in the plan. Unit 13 registration registers the value of the MCPFE gaps in circular curves railroad tracks in the plan as a function of time or a passable way. A device that implements the method for determining the gauge of the gaps in the circular curves of the railway track in plan, has a power connection unit non-contact sensors to the vehicle.Sensors 1 and 2 are connected to the battery 14 of the vehicle through the static Converter 15 for receiving an AC sinusoidal voltage and distribution transformer 16. Each sensor is connected to the individual rectifier signal of the rotation angle of the truck, the sensor 1 to 17, the sensor 9 to 18.In this case, when the registration of the vehicle in curved track sections, where the 19 outer thread 20 internal thread of the track, the frame 21 of the vehicle undercarriage trucks 22 and 23, the front pair of wheels which run over the outer thread of the rail track, and the rear wheel pair get guides efforts on the part of the internal thread, is installed in Polo is Techniki 25 contact sensors through the hard kinematic links 26 are connected to the frame 21 of the vehicle.The device is made in the case HH mm, to which using a shielded cable for connecting the outputs of two inductive sensors. As a recording unit used savesee device N-307-5. All equipment proposed method implemented in the device, except for the sensor was mounted in the cab.The method has the mathematical justification.It is known that the rotation angles of the front and rear axles relative to the base vehicle is determined by the formula
tgCC= (2) tgpptgCCbecause the rotation angle does not exceed a value of 5aboutWith, wherep- the angle of rotation of the front truck;
C- the angle of rotation of the rear truck;
L/2 - half of the base of the vehicle;
and half the base truck;
xppole length of the front truck;
xC- pole distance in the rear of the truck;
R is the radius of the curve of the railway track.When the position of the vehicle in the curve at the position of maximum warp, xp= xC= X. Find the pole distance from the expression (1)
x = L/2 + a - Rp(3) From the formula (2) determine the range of the circular curve
R = (6)
For truck values pole distance is
x=a+R (7) where is the total gap by widening the track. We substitute the expression (6) into (3) we obtain
= a (8) From the expression (7) we find the values of the total gap by widening:
= (9) Substituting (8) into (9) we get
Taking into account the expression (6) in the expression (10) the clearance value is
= and (C-p) (11)
Thus the expression (11) shows that the value of the total gap by widening in the radial curve of the railroad tracks in the plan directly proportional to the difference between the value of the rotation angles of the front and rear trucks, between their longitudinal axes and the axis of the frame of the vehicle, and the size and half the length of the base of the truck.Using the proposed method provides the following advantages:
the proposed method is implemented in the device registration gauge clearances, does not require the manufacture and use of special-purpose cars and, in particular, measuring trucks, and used only for the measurement of parameters by tram, but also by the IPU. The reliability of the measuring device provided by the absence of mechanical components and the use of modern electronic equipment. The poet is there a possibility of installation of the device on all types of railway vehicles, having two rotary undercarriage;
given that the cost of operation potenzmitteln car for 8 hours of work is 290 rubles (data Management North-Caucasian Railways), these costs are completely eliminated if you use the method implemented in the proposed measuring device;
working speed of movement potenzmitteln wagon 5 km / h for 8 h car diagnose the track with a length of 40 km, which reflects the closure of the ferry with a length of 40 km for 8 h, and this leads to failure of train schedules. According to the Department of North-Caucasian Railways, the failure of train schedules 1 h brings a loss of $ 13-14 thousand rubles So for 8 h, with the window in traffic loss is 32 thousand rubles These costs are completely eliminated using the proposed method, since the device is located on the locomotive, which is involved with the train and moves on driving operational speed. The METHOD of DETERMINING the POSITION of the RAILWAY track IN terms of CIRCULAR CURVES, namely, that determine the position of the path in terms of moving vehicles, including two trucks, and measured the angles of rotation of the bogie relative to the base transport sredstva crest rail and wheel, truck without Rysbekov wheelset axles, is set to the maximum skew and define a rut, limited the side of the head of the outer rail and a crest wheel ratio
b = a(C-p)
where b is the distance between the crest of the brace and the outer rail of the circular curve with the broadening of the wheel;
a - half base truck;
C- the angle of rotation of the rear truck;
p- the angle of rotation of the front truck.
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; 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.
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.
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: 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