The method of determining the state of the rail-sleeper grid operated welded railway track
(57) Abstract:Use: for the control status of the railway track potenzmitteln means. The inventive method is that potenzmitteln means continuously measure the curvature of the rail lashes in a horizontal plane. While periodically measure the temperature of the lashes using a contactless temperature sensors. Then the expression where F is the cross-sectional area of the rail scourge; n - number of sections rail scourge, in which the measured temperature Ti; TC- minimum temperature rail scourge when it's fixed, determine the average values of the longitudinal compressive every scourge forces. From the expression where KCRthe curvature of the legal track of the scourge; Klionthe curvature of the left rail of the scourge; S is the average distance between the axes of adjacent sleepers, determine the force that tends to move the sleepers across the way, and compare the values of the last forces H them with admissible values for this section of the route. The method makes it possible to determine the longitudinal-transverse stability of rail-sleeper lattice under the action of this longitudinal temperature compressive forces. The invention relates to x2">There is a method of determining the state of the rail-sleeper grid operated welded railway tracks, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path (ed. St. USSR N 379719, CL E 01 35/02, 1973).The technical result of the invention is the determination of the longitudinal-transverse stability of the rail and tie lattice path under the action of this longitudinal temperature compressive forces.For this purpose, the method of determining the state of the rail-sleeper grid operated welded rail track, mainly its longitudinal lateral stability under the action of this longitudinal temperature compressive forces, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path, measuring the curvature of the rail lashes periodically measure the temperature of these lashes using contactless temperature sensors, determine average values of the longitudinal compressive each rail scourge forces in expression
P= 25F Ti-T is given, where P is the cross-sectional area of the rail scourge, cm2;
n number of sections rail scourge, kotoji,aboutWith, then determine the force tending to move the sleepers across the way, in the words
H P(KCR+ KlionS
Dan, where KCRand Klionthe curvature of the respectively right and left rail of the scourge, cm-1;
S the average distance between the axes of adjacent sleepers, m, and compare the values of the last forces N s admitted their values for a given section of the route.The method consists in the following.Determine during the installation or repair of jointless tracks on any site (within the boundaries of each pair of welded whips) the following source data necessary for the subsequent implementation of the method: conditional parcel number jointless tracks; the coordinates of the beginning and end of the plot (km, picket, the distance of the beginning and end rail of the scourge, (m) from the picket sign in the course of kilometers; the cross-sectional area of rails 2F, cm2; the average distance between the axes of adjacent sleepers S on this site; minimum measured temperature of rail lashes TCwhen it is docked in the rail fastenings on the site.Enter these data for long-term use in the memory of the onboard computer potenzmitteln car, prescriptie to the us still original data replaced with new ones.Measure the proximity sensors when driving potenzmitteln car every 50-100 m temperature rail scourge.Transfer these measurements to the temperature of rail lashes in onboard computing machine potenzmitteln car and calculate on the machine for each plot (two welded rail lashes) average temperature compressive rail scourge forces in expression
(Pt)cf= 25 F Ti-T
Dan, where n is the number of sections in this area, in which the measured temperature of the rails.Pass the value (Pt)cfin memory of the onboard computer.Measured continuously at each site using inertial way the curvature of the rail lashes in the plane of the path of the right and left of the scourge TOCRand Klionm-1record it on the tape potenzmitteln car and passed into the memory of the onboard computer. Determine continuously in each cross section of the controlled area jointless tracks with on-Board computers potenzmitteln of the carriage during its movement on the plot of the values of the forces tending to move the sleepers rail-sleeper grid across SUB>t)max(KCR+KlionS, Dan
Record these values on the paper tape graphically. Compare the values of this indicator with admissible values of (N) depending on the kind and material of the ballast material sleepers, the degree of filling sleeper boxes, sizes of shoulder ballast, contamination of the ballast layer, the presence of bursts in the path of the share otrajennyh sleepers (), missed on the way in the number of cargo after work associated with the softening of the ballast.In places, where H(N), resistance jointless tracks are provided, and where N>(H) are dangerous in the meaning of the loss of transverse stability of the rail and tie lattice paths.Also determine the Hmaxfor this plot, at a time when it maximum for a given region of positive temperatures rails, computing Hmaxon the same computing machine according to the formula
Hmax= (Pt)max(KCR+KlionS/ Dan where (Rt)maxthe maximum longitudinal compressive force in the rails, it is possible on this section of road.Compare Hmaxs (N) and draw conclusions about the sustainability of jointless tracks when the section of MAXIMO WELDED RAIL track, mostly its longitudinal lateral stability under the action of this longitudinal temperature compressive forces, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path, wherein measuring the curvature of the rail lashes, periodically measure the temperature of these lashes using contactless temperature sensors, determine average values of the longitudinal compressive each rail scourge forces in expression
< / BR>where F is the cross-sectional area of the rail scourge, cm2;
n number of sections rail scourge, in which the measured temperature Ti;
T3the minimum temperature of the rail scourge when it's fixed,oWITH,
then continuously determine the force that tends to move the sleepers across the way, in the words
< / BR>where Kppthe curvature of the right rail of the scourge;
Kleinthe curvature of the left rail of the scourge;
S the average distance between the axes of adjacent sleepers, m,
and compare the values of the last forces H them with admissible values for this section of the route.
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