Abstract
A device for moving a tongue rail of a switch is provided, the device having a retaining element attached to a stock rail and at least one roller fastened thereon, the axis of rotation of which roller is substantially parallel to the rail course, and which is arranged in such a way that the tongue rail can roll up from a lower contact position on the stock rail onto the roller to a remote position, and having a spring element arranged in the interior of the roller and fastened by at least one screw connection fixed adjustably to a slide rail on the retaining element.
Claims
1. A device for moving a tongue rail of a switch, the device comprising a retaining element configured and arranged to be coupled to a stock rail; and at least one roller attached thereto, the axis of rotation of which is substantially parallel to the course of the rail, and which is arranged in such a way that the tongue rail can roll up from a lower contact position on the stock rail onto the at least one roller to a remote position; and a spring element arranged in an interior of the at least one roller, and wherein the at least one roller includes at least one screw connection configured and arranged to adjustably fix the at least one roller to a slide rail on the retaining element.
2. The device according to claim 1, characterized in that an outermost shell of the at least one roller is metal.
3. The device according to claim 1, characterized in that the at least one roller is an elastomer-sprung roller.
4. The device according to claim 1, characterized in that the at least one roller is attached to the retaining element by at least one eccentric fastening.
5. The device according to claim 4, characterized in that the eccentric fastening includes at least one polygonal plate fixed in the slide rail on the retaining element, and at least one shaft configured and arranged to extend through the plate via an acentric bore.
6. The device according to claim 1, characterized in that a second roller of the at least one roller is fastened to the retaining element, wherein an axes of rotation of the first and second rollers are arranged substantially parallel to one another.
7. The device according to claim 1, characterized in that a bearing of the at least one roller is integral to the retaining element.
8. The device according to claim 1, characterized in that the spring element is a hollow cylinder with an inner diameter in a range between 30% and 60% of the outer diameter.
9. The device of claim 2, characterized in that the roller is designed as an elastomer-sprung roller.
10. The device of claim 3, characterized in that the roller is attached to the retaining element by at least one eccentric fastening
11. The device of claim 5, characterized in that a second roller of the at least one roller is fastened to the retaining element, and wherein an axes of rotation of the first and second rollers are arranged substantially parallel to one another.
12. The device of claim 6, characterized in that a bearing of the at least one roller is integral to the retaining element.
13. The device of claim 7, characterized in that the spring element is a hollow cylinder with an inner diameter is in a range between 30% and 60% of the outer diameter.
14. The device of claim 13, wherein the inner diameter of the spring element is in a range between 45% and 55% of the outer diameter.
15. The device of claim 8, wherein the inner diameter of the spring element is in a range between 45% and 55% of the outer diameter.
Description
[0018] In the following, the present invention will be explained in more detail by reference to embodiment variants depicted in the figures, wherein:
[0019] FIG. 1a shows a side view of an embodiment with a tongue rail in the contact position;
[0020] FIG. 1b shows a side view of an embodiment with a tongue rail in a remote position;
[0021] FIGS. 2a to 2d show different views of an embodiment of an eccentric fastening;
[0022] FIG. 3 shows an exploded view of an embodiment with two rollers;
[0023] FIG. 4 shows an exploded view of a spring roller.
[0024] FIG. 1a discloses a side view of an embodiment, having a tongue rail 2, which is in a contact position. A retaining element 7 of the device is attached to a stock rail 3 with a fastening device 4. The device is not arranged directly at the end of the tongue rail 2 so that tongue rail 2 and stock rail 3 do not touch even in the contact position in the area of the device. A roller 1 is connected to an eccentric fastening via its shaft 20. The size of the roller 1 is chosen so that it is easy to roll up the tongue rail 2 and positioned so that the highest point of its shell is slightly higher than the bearing surface of the tongue rail 2. The eccentric fastening is designed as a polygonal plate 6 in the form of a regular octagon with an acentric hole 2c for the passage of shaft 20. This embodiment makes it particularly easy to adjust the height of roller 1 when assembling the device or even at a later date. Depending on which side of the octagon is facing downwards, the uppermost point of the shell of roller 1 is in a less or more elevated position relative to the bearing surface of the tongue rail 2. Thus the lifting height of the tongue rail 2 can be optimally adjusted depending on the installation situation of the device and external parameters. The eccentric fastening is guided in a slide rail 7a of the retaining element 7. The eccentric fastening and thus also the roller 1 is fixed to the retaining element 7 via a nut 8. The horizontal position of roller 1 can be easily adjusted and, if necessary, readjusted on site by means of the guide in slide rail 7a. The optimum setting is when the roller 1 and the tongue rail 2 touch each other in the contact position, but the tongue rail 2 still does not rest fully on the roller 1, but rests on a slide chair 21. This guarantees that forces applied to the tongue rail 2 by corresponding vehicles when the tongue rail 2 is passed over are not transferred to the roller 1, or only to a small extent. At the same time, however, it is ensured that rolling onto roller 1 is easily possible and that there is no unnecessary friction. Thus, by setting only one axis, namely shaft 20, the position of roller 1 can be precisely set. On the one hand, this is very cost-efficient and offers low susceptibility to errors and, on the other hand, the setting is very easy and quick to perform and can be changed at any time as required.
[0025] FIG. 1b shows the same embodiment, but the tongue rail is in a remote position. Rolling onto roller 1 has already taken place and the tongue rail is already in a position a few millimeters away from the slide chair 21.
[0026] FIGS. 2a to 2d show an embodiment of an eccentric fastening 6 in front, side and rear view, as well as an oblique view. It has an octagonal adjustment segment 6a and a centrically arranged guide segment 6b with an acentric bore 2c, the latter being intended to receive the shaft 20 of the roller 1. The position of hole 2c is selected so that a different distance to each side edge of adjustment segment 6a results from its center point. By turning the eccentric fastening 6 in a corresponding guide in the retaining element 7, the exact position of hole 2c and thus the position of roller 1, in particular the height of roller 1, can be set.
[0027] FIG. 3 shows an exploded view of an embodiment variant with two rollers 1. The retaining element 7 is designed similarly to the embodiment described in FIG. 1a and FIG. 1b. However, two rollers 1 are mounted on two shafts 20 with two eccentric fastenings on each side in the slide rail 7a. Between the eccentric fastenings and the rollers 1, disks 19 are arranged; between the eccentric fastenings 6 and the nuts 8, disks 9 are further inserted and a spacer element 10 is inserted on each side. The spacer element 10 is designed in such a way that, on the one hand, the rollers 1 do not come too close to each other when the device is adjusted, and, on the other hand, the distance between the rollers can still be adjusted. This is achieved by forming a hole for a shaft 20 in an oblong manner. This means that the maximum rolling path of the tongue rail 2 on the rollers 1 can be optimally adjusted as required.
[0028] FIG. 4 shows an exploded view of a spring roller. It has an outermost shell 11, in which there is a spring element 13 made of elastic material, preferably elastomer, flanked by two safety rings 12, which hold the spring element 13 in the outermost shell 11. The outermost shell 11 can be made of robust metal to prevent wear from rolling up the tongue rail. However, it can also be made of elastic material to provide additional damping. Inside the spring element 13 there is a fixing ring 14 as well as two limiting elements 15. The limiting elements 15 are arranged on a hollow shaft 17, which rests on shaft 20. Distal to the limiting elements 15 are further safety rings 16, as well as a disk 18 each, and a toothed disk 19. Outside the disks there is the eccentric fastening 6, which is separated by another disk 9 and adjoins the nut 8.
