SU34582A1 - Tool for checking railroad track curves - Google Patents

Description

The proposed device has the purpose to rationalize one of the works on repairing the railway track and keeping it in good condition, namely, checking and rehiring the track in curves.

It is indisputable that the correct curve has the same, if not greater, significance as the direct path for driving safety, for keeping rolling stock and simply for quiet driving. If the rolling stock rolls on an unrepresented straight way contribute to the chattering of the running gears, then on the unpresented curve with sufficient accuracy, these adverse effects are aggravated, coupled with increased wear of the wheel tires from the wheel bolt from the outer thread of the curve to the inner and back.

Meanwhile, the usual way of checking curves and re-fitting them on iron horns is of a primitive nature. Curves are checked along the length of the booms for two rail links by pulling a thin wire between the extreme joints and measuring the boom at the middle joint with a pocket meter.

This method of checking the curves leads to the following losses: 1) two people are required for checking at the ends of the cord (1 or wire) and one person responsible

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the agent at the middle joint, 2) when rehtovka work is intermittently, because after shifting rehtuyomogo joint should be checked with a cord, then a new supply and again check, and so on. This work can be accelerated only by allocating two people specifically to the cord that , of course, it accelerates the work, but it increases the cost of its production, 3) besides, there is no doubt that the test for the cord cannot provide sufficient accuracy, 4) due to the complexity of the production of checking the curves for sushi, test, conditions, periodic check they are often reduced to Overko broadening is the path and the elevation of the outer rail, the geometrical accuracy of the curve is applied to the eye. The proposed device eliminates these disadvantages, namely:

1) by its design, when checking, it requires the participation of only one person,

2) during the rechtovka observation of the moving joint goes continuously, therefore saving time is obtained, 3) the method of fixing the end joints gives the greatest accuracy, 4) does not require an additional two people, has little weight, the device allows the agent watching the condition of the path ( road master), to check the curves more often and more precisely, 5) with the addition of

Of minor details, the fixture may be suitable for other verification work on curves (elevation of the outer rail and broadening) as well as on straight sections, i.e., to be a universal testing instrument.

In the schematic drawing of FIG. 1 is a side elevational view; hfig 2 is a section along the line ab in FIG. one; FIG. 3 view. adaptations from above; FIG. 4-shield; FIG. 5-scheme of installation of the device; fig, b-part fixture; FIG. 7-scheme of work with devices.

The device and operation of the device is based on the method of checking the curve along the arrows of the segments of this curve over two rail links. The measurement of the arrows of the curves is carried out by fixing the end joints of the segment of the curve along the images in the mirrors of the device installed at the middle rail joint.

 The device consists of the rail A (Fig. 1), with the strips C and D attached at its ends, supporting the device (when it is placed on the rails of the track. The rail length A is equal to the normal rail track width. Metal is laid along the top of the rail screw D, having tape cutting at one end approximately 1.5 strings a and 1 cm long and capable of being rotated in bearings Ж, Ж ..- Ж by means of handle P.

A carriage 3 is placed at one of the ends of the rail A, moving along the rail L by means of a nut and a screwed end of the lead screw D. The correct and smooth movement of the rail is achieved by having special protrusions sliding on the grooves M. On the carriage 3 two mirrors are fixed //, H at an angle of 45 ° to the longitudinal axis of the rail A and the face Ik of the end B of the rail. The mirrors have one vertical risk at equal distances from the line of intersection of the planes of the two mirrors.

At the end B of the slat A, at an angle of 45 ° thereto, the sighting mirror O is reinforced, on which two vertical risks are placed at distances from the middle of it, equal to the projection distances of such

risk from the line of intersection of the planes of the mirrors H, N.,

On the upper rail of the rail A at the end of the carriage, divisions are made, according to which the readings of the arrow lengths of the curves are taken when checking them. For smaller counts in the fission segments at the carriage 3 on the end of the screw D at the handle, the disk C is fixed, with ten divisions on it around the circumference. Turning the disk with a screw D on a circle corresponds to the movement of the carriage 3

1 „„ p

on -TQ-linear measure. The division on the disk C is counted against the horizontal shelf of the plate.

To achieve clear images of the end rail joints, when working with the device, special shields painted in two colors are installed on them. Their arrangement is clear from FIG. four.

The fixture is laid across the path on the rails Above the first joint from the beginning of the test curve so that the end of the rail with mirrors H, H is located at the outer rail of the curve. At the joints of the rails, limiting the ends of the part of the curve over two rail links, auxiliary plates are installed (Fig. 4 and 7). Then, watching in mirror O, rotating the handle P moves the mirror H, H on the carriage 3 until the images of the vertical axes installed on the end joints of the panels become in the vertical scrutiny of the mirrors H, N and O. As the mirrors move P, H, end B of the lath A is slightly moved to the left or right in order to reach the desired position as soon as possible; This is to ensure that the end of the rail A does not depart from the co-contact with the rail. This is achieved by lightly pressing the reiki during manipulation. After reaching the desired position on the rail and on disk C, the resulting reading is performed and recorded. Then the device is transferred to the next rail joint, rearranged the butt plates, respectively, and performed tighter manipulation, etc. After passing through the entire checked, curve, the deformation of the crooked curve is determined by comparing the recorded readings.

A schematic view of one half of the mirror O when fitting the joints is shown in FIG. b, where a, b, c, d-half mirror O; d, e, f, s, image of the mirror I, I; and, k, A is the secondary image of the butt shield; On the sighting axis of the mirror O.

The operation of the device is shown schematically in FIG. 5, where the mirrors are denoted by the letters L, I and O, and C, C-extreme joints of the curve with the established

shields.

When using a device for traveling rehtovki in curves can be. Two cases: 1) rehtovka curve of a known radius, 2) rehtovka curve, the radius of which is unknown.

In the first case, the following is done: according to a special table, against the radius of a given curve and the length of a curve equal to two rail links m, take the length of the boom and lay on the staff rail, move the carriage 3, respectively. Then put the fixture on the rail junction first from the beginning, and at the adjacent joints are scutes. According to the images in the mirrors I and O and on the vertical risks on the mirrors, the joint O is fixed, which is achieved by gradually moving the end B of the device to the right or left. Having thus established the device, ch d in the right side of the mirror O, according to the risks on it and on the right mirror S, fix the correct position of the junction in. In case of its inconsistency with the hanging plane, a command is given to the worker standing at the junction in advancing this junction in one direction or the other until it is fully set in the correct position. When this joint is brought to its normal position, the device b and c are transferred to it and, correspondingly, to the other joints, plates b and c, after which the work is done in the same order.

In the second case, the work is performed in the following sequence. Initially, the arrows of the curve segments at each joint are measured in the manner described above. According to the recorded readings, the average length of the boom is found for a segment of a curve over two rail links, which is laid on the instrument rail by the carriage 3.

Further work is done as in the first case.

The subject matter of the invention.

Claims (4)

1. A device for checking railroad curves along the arrows of curve sections over mainly two rail links, characterized by the use of a pair of mirrors R, H arranged perpendicular to each other for viewing through them in a common sighting mirror O the location of the images of the ends C, C of the measured the length of the path relative to the control risks that are present on mirrors I, J, and O, so that the mentioned images coincide with them only if the exact positions of the risks of mirrors I, H on the chord C and C the area being measured of the way. 2. The form of making the device according to claim 1, characterized in that the mirrors H, H are mounted on the carriage 3, moving along the bar B with a measuring scale, which serves to read the dimensions of the boom of the section to be measured crooked. 3. In the device according to claim 1, use the spindle to move the carriage 3. 4. In the device according to claim 1, use a pair of adjustable plates (Fig. 4) to more clearly mark the ends of the curve to be measured.