RU2114235C1 - Curvilinear track section lining method - Google Patents

Abstract

FIELD: railway transport; repair of permanent way. SUBSTANCE: in proposed method four-point lining device is used for measuring deflection of rail lines in two points of track, comparing the obtained values and shifting the track as necessary by shifting mechanism. Deflection of rail line measured on lined up track is corrected before comparing it with deflection measured behind rollers of track shifting mechanism by means of differential selsyn included into lining device to make it equal to deflection when point of track in which deflection is measured is located on designed curve. This takes place when corrected deflection exceeds measured one by value K1 where K is coefficient equal to l₃/L, l₃ is distance between measuring trucks and L is distance between end tricks, 1 is value of designed track shift in point of track above which front end truck of linear is arranged. EFFECT: provision of checking of track lining and improved quality of lining. 1 dwg

Description

 The invention relates to the repair of a railway track.

 A known method of straightening curved sections of a railway track, based on the use of a four-point leveling device, consisting of a track shift mechanism, two measuring trolleys, two end trolleys, between which a cable-chord is stretched, from which the bending arrows of rail threads are measured at two points - behind the mechanism rollers the path offset and on the straight path, the control panel with two carriages, one of which is connected using a flexible thread to the sync-receiver, electrically connected to the sync-sensor, is set located on the first measuring trolley, wherein the leveling device comprises a second selsyn sensor mounted on the second measuring trolley and a second selsyn receiver, and the second carriage is made with electrical contacts for switching the electrohydrosolotter of the track shift mechanism, which consists in measuring the rail bending arrows threads at the mentioned points of the path, compare these arrows and produce a shift of the path of the shift mechanism.

 In order to straighten the path to the calculated position during straightening using the fixed-point method (according to the prototype), it is necessary to write the value of the calculated shift before chalking, and during the straightening process to continuously adjust the position of the tensioned chord cable so that its front end moves along the calculated line outlines of the curve. For this, the front end carriage of the leveling device is equipped with a mechanism for moving the end of the cable-chord across the rail gauge and equipment for remote control of this mechanism. During straightening, the operator monitors the inscriptions that are made on every fifth sleeper, and remotely control the mechanism on the front end carriage, shifting the front end of the cable-chord by the amount of shift.

 The disadvantage of this method is that it is quite complex, time-consuming and uncontrolled, since the operator manages to give the command to the mechanism for shifting the end of the cable-chord during moving from one sleepers with a mark to another, which takes 2-2.5 s or not, it is impossible to verify.

 The technical result of the proposed method of straightening the curved sections of the railway track consists, firstly, in that it significantly simplifies the design of the device, which enables a large number of machines that can straighten the track only by the smoothing method, to straighten the track according to predetermined shifts, i.e. by calculation, which will increase the safety of train traffic and reduce the cost of maintaining the track and rolling stock, and, secondly, reduce labor costs (no need to inscribe the amount of shifts on the sleepers) and increase control over the work performed, since by placing the recorder on the pointer with which the graph line is drawn on the tape drive, you can see how accurately the graph line is drawn around the line that it leaves.

To achieve this technical result, in a method of straightening curved sections of a railway track, based on the use of a four-point straightening device, consisting of a track shift mechanism, two measuring trolleys, two end trolleys, between which a cable-chord is stretched, from which the bending arrows of rail threads are measured in two points - behind the rollers of the track shift mechanism and on the straightened track, the control panel with two carriages, one of which is connected electrically with a selsyn receiver, electrically connected to a selsyn sensor mounted on the first measuring trolley, and the leveling device also contains a second selsyn sensor mounted on the second measuring trolley, and a second selsyn receiver, and the second carriage is made with electrical contacts for switching the electrohydrosolotter of the track shift mechanism, which consists in that they measure the arrows of the bending of rail threads at the mentioned points of the path, compare these arrows and produce a shift of the path by the shear mechanism, the arrow of bending of the rail thread, measured on the surface before comparing it with the boom, measured at the rear of the rollers of the track shift mechanism, it is corrected by means of a differential selsyn connected to the second carriage and electrically connected to a second selsyn sensor and a second selsyn receiver connected to using a flexible thread with an additional carriage, which is equipped with a control panel and which is made with a pointer to track the graph of K • e values, where e is the value of the calculated shift at the track point, above which the front end trolley is placed, and K is a coefficient equal to l ₃ / L, where l ₃ is the distance between the measuring trolleys, and L is the distance between the end trolleys.

 The drawing shows a schematic diagram of the straightening of the curved section of the track, which in the serviceable (calculated) position is shown by a solid line 1, and in an upset state is shown by a dash-dot line 2.

The four-point leveling device, which underlies the proposed straightening method, consists of two measuring trolleys 3 and 4 and two end trolleys 5 and 6, between which a cable-chord is stretched. During straightening, the rear end carriage 6 is on the straight path, and the front end carriage 5 is on the detuned path 2. In this case, the cable-chord is shown by the solid line 7, and when the point of the path above which the carriage 5 is located is on the line of the calculated outline curve, the cable-chord occupies the position indicated by the dash-dotted line 8. From the cable-chord, the arrows of bending of rail threads are measured with selsyn sensors 9 and 10 located on measuring carts 3 and 4. These selsyn sensors are in a four-point straightening device They are connected to the receiver 11 and 12 mounted on the control panel 13. The selsyn receivers are connected to the carriages 15 and 16 with flexible threads 14, which move along the panel at distances proportional to the measured arrows. Electrical contacts are placed on these carriages, with the help of which the electrohydrosoller of the path shift mechanism 18 is switched. These carriages compare the bending arrows of rail threads and control the operation of the track shift mechanism. When the compared arrows are equal to each other, the carriages 15 and 16 are located opposite each other, the electrical contacts on the carriages are open, the electrohydrosolot is in the neutral position and the hydraulic cylinders of the shift mechanism 18 are locked. As soon as the indicated equality is violated, one of the carriages moves relative to the other, one of the electrical contacts 17 of one carriage closes with the electrical contact of the other carriage, the electrohydroshaker activates and so turns on the cavities of the hydraulic cylinders of the shear mechanism so that it moves its rollers in the right direction so that the arrows to be compared are are equal to each other. In order that four-point leveling devices, which are available in large numbers on track machines (ELB, VPO-3000, etc.), could be straightened not only by the method of smoothing, but also by calculation, the following changes are made to the design of the control panel of the device: instead of sync the receiver 12 establish a differential selsyn, which is also a selsyn receiver, and therefore the position 12 remains behind it, the removed selsyn receiver is installed on the remote as a selsyn sensor 19, which is electrically connected to the differential linen selsyn 12 and flexible thread with an additional carriage 20 with a pointer. In addition, a paper tape with a graph of K • e values is laid on the tape drive mechanism of the console. During straightening, the operator moves the carriage 20 so that its pointer is always on line 21 of the graph of K • e values. Differential selsyn 12 summarizes the values of h ₂ and K • e, coming to him from selsyn sensors 10 and 20, moves the carriage 16 by a distance equal to the sum of these values. This total value is compared with the arrow, which the carriage 11 displays on the remote control, as a result of which the curve is unloaded in the calculated (design) position.

, где l₃ - расстояние между измерительными тележками, а L - расстояние между концевыми тележками. Суммирование указанных величин (h₂ + K • e) осуществляется с помощью установленного на пульте управления дифференциального сельсина.Thus, in the Turovsky method, instead of adjusting the position of the tensioned chord cable used in the prototype to shift the path by the calculated values, the value of the arrow measured on the straightened path is adjusted. As a result of this, instead of equipping the front end carriage with a mechanism for displacing the front end of the cable-chord and equipment for remote control, it is required to install one differential selsyn instead of one selsyn receiver, and install the freed selsyn receiver on the control panel as a selsyn sensor. In addition, instead of inscribing the calculated shift of the path on every fifth sleeper, it is necessary to draw a graph of K • e values, to place the remote control of the displacement of the front end of the cable-chord, draw a line around the K • e graph with carriage 20, where e is the value the estimated shift of the path at the point of the path above which the front end trolley of the leveling device is located, and the coefficient

where l ₃ is the distance between the measuring trolleys, and L is the distance between the end trolleys. The summation of the indicated values (h ₂ + K • e) is carried out using the differential selsyn installed on the control panel.

A plot of K • e values is pre-drawn on a paper tape in a 1: 1 scale, the path is drawn to the scale of the tape’s broaching by a tape drive. Since the differential selsyn continuously enters into two rotation angles of the selsyn sensors rotors: one proportional to the arrow h ₂ measured on the straight path, and the second proportional to K • e, the differential selsyn rotor rotates by an angle equal to the sum of these two angles, and he moves his carriage a distance proportional to the sum of h ₂ and K • e. A stele h _{2 of a} bend of a rail thread measured on a straight path before comparing it with an arrow h _{1 of a} bend of a rail thread measured at the rear of the rollers of the track shift mechanism is adjusted so that it is equal to the arrow provided that the point of the path at which this arrow is measured located on the line of the calculated outline of the curve. This occurs when this corrected boom, measured on the straightened path, is more than measured by the value of K • e.

Claims (1)

The method of straightening the curved sections of the railway track, based on the use of a four-point leveling device, consisting of a track shift mechanism, two measuring trolleys, two end trolleys, between which a cable-chord is tensioned, from which the bending arrows of rail threads are measured at two points - behind the rollers of the shift mechanism the path and on the straight path, the control panel with two carriages, one of which is connected by means of a flexible thread to a selsyn receiver, electrically connected to a selsyn sensor installed on the first measuring trolley, wherein the leveling device also contains a second selsyn sensor mounted on the second measuring trolley, and a second selsyn receiver, and the second carriage is made with electrical contacts for switching the electrohydrosolotter of the track-shift mechanism, which consists in measuring the bending arrows of the rail threads at the mentioned way points, these arrows are compared and the path is shifted by a shift mechanism, characterized in that the bending arrow of the rail thread, measured from the straightened path, before comparison by lowering it with the arrow, measured at the rear of the rollers of the track-shift mechanism, they are corrected by means of a differential selsyn included in the leveling device, connected by means of a flexible thread to a second carriage and electrically connected to a second selsyn sensor and a second selsyn receiver connected by a thread with an additional the carriage, which is equipped with a control panel and which is made with a pointer for tracking the graph of values of k • e, where e is the value of the calculated shift at the path point above which the front end trolley, and K is the coefficient equal to l ₃ / L, where l ₃ is the distance between the measuring trolleys, and L is the distance between the end trolleys.