Rail deflection control device
SUBSTANCE: invention relates to metrology and can be used for automated control of the rail deflection, for example, in straightening the rail prior to welding the seamless rails. The device incorporates a measuring platform accommodating three optical pickups to keep its front and rear ends and centre, and a measuring device connected to the said pickups. The device comprises also the strips optically contrast relative to the rail surface, arranged on the platform beneath the rail, and a mechanism shifting the rail relative to the immovable measuring platform. The optical pickups are shadow column instruments to record the rail shadow projection against the background of the contrast strip.
EFFECT: possibility of measuring vertical and horizontal rail deflection in straightening.
6 cl, 3 dwg
The invention relates to the field of measurement technology and can be used for automated control of the deflection of the rail, for example, when the alignment before welding seamless rails.
Currently, due to increased speed of rail transport, it is important to use long seamless rail lashes. Therefore, when welding of rail lashes sharply raises the issue of providing values of vertical and horizontal deflection of the rail on the base length. Objective technical control of these parameters allows you to accelerate the Assembly of seamless rail lashes, to reduce the cost of their manufacture and to simplify the Assembly technology of the track of the rail lashes.
A device for measuring the geometrical parameters of the rail (see U.S. patent No. 4288855, CL G01B 7/28, 1981), including mounted on the base platform of the contact sensors measuring the amount of vertical and horizontal deflection of the rail at a predetermined length, and the height of the rail head and the width of its surface.
The main disadvantage of the known device is not sufficiently high measurement accuracy associated with the use of mechanical contact sensors under the control of the newly collected rail lashes. This is because the rail at the stage of the post the key can have external contamination or local corrosion delamination of the metal, which will be perceived by mechanical sensors.
In addition, the known device has a small performance needed to establish reliable contact with the surface, which complicates its use in automatic complexes Assembly rail lashes.
Closest to the claimed device technical essence is a device for controlling the track, taken as a prototype (see U.S. patent No. 4040738, CL G01C 3/00, 1977), including installation on the base platform of the three optical sensors controlling the rail at the beginning, center and end, as well as the measuring device is connected to the sensors. The device allows to measure the magnitude of the vertical and horizontal deflection of the rail at a given length.
The main disadvantage of the known device is that the measurement of the parameters of the rail is produced on the reflected component of the incident radiation. On an operating section of rail track surface of the rail is a mirror surface, which is well reflected by the mirror component of the incident radiation. The rails, which were not in operation, have a low reflectivity, and therefore, the known device will be practically unusable.
In addition, the known device measures the parameters of the rail by p is moving on a special platform and makes measurements relative to the existing rail track, which was previously exhibited as horizontally and vertically. When the control rail passing alignment, there are no technological base against which you can measure its basic parameters, i.e. without installing rails on control plot ways to measure its parameters by means of the known device is not possible.
The aim of the present invention is to remedy these disadvantages, namely the measurement of the vertical and horizontal deflection of the rail in the process of straightening.
The objective in the device for controlling the deflection of the rail, comprising a base platform, which is equipped with three optical sensors that control the rail at the beginning, center and end, as well as the measuring device is connected to the sensors is achieved in that the device additionally introduced optical contrast relative to the surface of the rail strip mounted on the measuring platform under the rail, and the mechanism of movement of the rail relative to the stationary measuring platform, the optical sensors are used shadow sensors to register the shadow projection of the rail on a background of contrasting stripes.
Specified, the device allows three shadow images of rail coming after straightening, to determine its trough in ismere the second plane.
To ensure movement of the rail relative to the stationary measurement platform used mechanism made in the form of a roller conveyor, the rollers of which has contrasting stripes.
It is advisable as a contrasting stripe to use either illuminated from the bottom frosted glass or reflective strip, illuminated from above with a diffused light source such as fluorescent lamp.
To improve the accuracy of the measurement as a shadow receiver sensor used linear photodiode matrix or linear CCD matrix (matrix-based devices with the charging current link).
The proposed device for measuring the deflection of the rail due to the shadow of optical sensors, allows you to use as a measuring platform directly to the base of the press for straightening rails, aligning the measurement area, with the area of the straightening of the rail, which is unique among the known devices used to control the geometric parameters of rails before welding in long lashes, and therefore meets the criterion of "inventive step".
Figure 1 shows a drawing explaining the principle of operation of the claimed device.
Figure 2 presents plots of the electric output signal of the optical shadow sensor, spaced from zero is tetki at distances L 1and L2.
Figure 3 presents the block diagram of the measuring device.
Figure 1 shows a rail 1 is mounted on the rollers of the conveyor 2; contrasting stripe 3; optical shadow sensor 4 (D1, D2, D3), mounted on a support beam 5 and having the angle 6.
Figure 3 shows the block diagram of the microprocessor of the measuring device 7, which includes a microprocessor 8; random access memory (RAM) 9; a persistent storage device (ROM) 10; expander I / o (RVV) 11; information bus 12; a signal Converter sensors 13, keyboard 14, a display device 15.
The device operates as follows. On the roller conveyor 2 is placed in the measurement area of the reference preparation (flat slat) with zero deviation and register the obtained shadow image sensor 4 (D1, D2, D3) as a benchmark, which is stored in the ROM 10. After this roller conveyor 2 move the rail 1 through the zone of measurement sensors 4. Operator indicator device 15 determines the section of the rail with the greatest curvature in the horizontal plane and stops the movement mechanism 2. After a stop rail sensors D1-D3 to more accurately measure the position coordinates of the edge rail X1-X3 relative to the given basis for comparison (see figure 2), respectively, at the beginning, middle and end zones of control.p> In the measuring device 7 according to the measurement results X1-X3 each sensor calculates the amount of arrow deflection Δ as:
In case of exceeding the magnitude of arrow deflection valid values rails straightened and again measured the arrow deflection. The process is repeated for the entire length of the rail to obtain acceptable values of arrow deflection. For control of arrow deflection in the vertical plane of the rail chantuese and the procedure is repeated.
The measured geometric parameters of the rail are displayed on the display device 15 (monitor or plotter).
As the shadow of sensors used coordinate-sensitive projection sensors. The sensor is based on the projection of a shadow image of the rail on the background of the reflective surface on the photodiode line (or linear CCD matrix) with the subsequent registration of the signal line using an analog-to-digital Converter and the data analysis of microprocessor-based measuring device. As a contrast stripe was used or illuminated from the bottom frosted glass or reflective strip, illuminated from above by a light source. As the reflective strip has been used, for example, adhesive tape, used for pasting shared is public transport to prevent collisions in the dark.
The average accuracy of the measurement of the deflection of the rail of 0.5 mm, which satisfies the required conditions in the Assembly rail lashes.
Thus, the proposed device allows to reliably control the amount of vertical and horizontal deflection of the rail at a given length.
1. Device for controlling the deflection of the rail, comprising a sensor platform, which is equipped with three optical sensors that control the rail at the beginning, center and end, as well as the measuring device is connected to the sensors, characterized in that it contains optical contrast relative to the surface of the rail strip mounted on the measuring platform under the rail, and the mechanism of movement of the rail relative to the stationary measuring platform, the optical sensors are used shadow sensors to register the shadow projection of the rail on a background of contrasting stripes.
2. The device according to claim 1, characterized in that the mechanism of movement of the rail relative to the stationary measuring platform is designed in the form of a roller conveyor, the rollers of which has contrasting stripes.
3. The device according to claim 1, characterized in that as a contrasting stripe is used illuminated from the bottom frosted glass.
4. The device according to claim 1, characterized in that kachestvennosti strip is used reflective stripe illuminated from above by a light source.
5. The device according to claim 1, characterized in that as the receiver of the shadow sensor used linear photodiode matrix.
6. The device according to claim 1, characterized in that as the receiver of the shadow sensor used linear CCD array.
FIELD: control-mounting systems.
SUBSTANCE: device has laser fixed in body, images forming device made in form of intersecting filaments. Body is made in form of hollow prism, provided with cone at the end. Upper portion of cone is combined with center of apertures provided in coordinate lines system. Body is mounted with possible angular displacements around aperture center. Forming device filaments are made non-transparent and fixed in frames inserted in system. Frames are placed with possible displacement independently from one another in direction perpendicular to filaments.
EFFECT: higher precision.
FIELD: railway transport; track gauge measurements.
SUBSTANCE: proposed multipurpose gauge contains rod, fixed and movable stops, handle with tie-rod guide, device for determining railway track gauge with scale and device for determining distance between working faces of core and guard rail and distance between working faces of check rail and guard rail furnished with scales, respectively, carriage for checking ordinates of transition curves, width of troughs and side wear of rail head furnished with end piece with scale and mating with scale on tie-rod. Proposed method of checking comes to the following: check measurement of gauge is carried out by means of carriage whose end piece is fixed relative to CHECK position notch made on end piece. Then carriage is shifted to side of movable stop until end piece comes in contact with side working face of rail head and readings are taken from carriage scale relative to GAUGE CHECK position notch found on rod. Then gauge is measured by known method. Difference between readings obtained by known method and check measurement should not exceed gauge measurement error. Correspondence of readings is determine by comparing track gauge measurements and measurements of distance between core and guard rail or measurement of distance between check rail and guard rail. Difference between any values of gauge readings and distance between working faces of core and guard rail or distance between working faces of check rail and guard rail should be fixed.
EFFECT: improved maintenance of track gauge and quality of measurements.
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
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; 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
SUBSTANCE: tuning device incorporates and adaptor-extender to be attached with its one end to railway line tested in-situ or to a fastener attached to the railway section. The said device comprises a vibration signal measuring appliance to be attached to the other end of the aforesaid adapter-extender. The railway line section integrity testing device comprises a control appliance, a vibration generator, a tuning device to be attached to the railway line section. The vibration signal measuring appliance and vibration generator are connected with the aforesaid section to cause its vibration. The railway line section integrity testing system incorporates the railway line integrity testing device attached to the railway section over five consecutive sleepers arranged below the railway line and perpendicular to it.
EFFECT: fast and valid control of the rail parameters.
16 cl, 4 dwg
SUBSTANCE: invention relates to methods and devices intended to measure the rolling stock weight in operating conditions without stopping the said rolling stock and in inclined track automatic control systems. The force transducer incorporates a signal processing unit and a sensitive element fitted on the rail and made up of a passive and active parts moving relative to each other, the passive part being fitted directly on the rail while the active one being fitted on a rigid beam mounted on two hinged supports equidistant, along the rail, from the passive part. The aforesaid passive part represents a bush with an inner and outer threads and is fastened, by means of outer thread and nut, in the rail web hole, while the bush inner thread serves to locate a threaded stepwise rod made from a nonmagnetic material accommodating a magnetic material insert on its end face closer to the sensitive element active part. The said insert magnetisation vector is parallel to the measuring rail direction. The sensitive element active part incorporates a magnetic field intensity meter.
EFFECT: higher measurement accuracy.
FIELD: railway transport; track facilities.
SUBSTANCE: invention relate to method of straightening railway track in plan, physical profile and level and to device for implementing the method and they can be used in scheduled preventive straightening out of track and finishing of track before handling over for operation after major repairs. According to proposed method, railway track is electronically marked out by fitting electronic marks on track axis on each hundred meter and kilometer mark, and scanners of said marks are installed on track measuring car on each track maintainer. Parameters of track rails in plan, physical profile and level are checked by electronic marks. Marks are uninterruptedly read out, their identification number are kept in memory and distance covered at moment of their detection is recorded. In process of calculations and corresponding shifts of track, data base of said electronic marks is formed containing information on location of each marks and distance between adjacent marks. Results of obtained calculations and data base of electronic marks are transmitted to dispatcher centers of track maintainers and further on to computers of said machines. Track is subjected to straightening out starting from set mark and continuously reading information from electronic marks and automatically correcting current index of program task in moment of detection of mark if measured distance from initial mark differs from Log value. Information on current calculated shifts of track is periodically renewed basing of subsequent passings of track measuring car and is transmitted to track maintainers. Invention increases capacity of machine maintenance of track, cuts down time taken for calculation of required straightening out of track, provides acceleration of total certification of geometrical parameters of rail track gauge geometry measuring device and improves quality of said device, provides automatic tie of readings of track maintainers to longitudinal coordinates of track owing to doubling of existing staking out with electronic marking out.
EFFECT: increased capacity of track maintainers.
3 cl, 3 dwg