FI94975B - gear structure - Google Patents

Description

1 94975

This invention relates to a gear structure, and more particularly to a rail rail gear structure that allows the movable tongue structures of a gear to be placed at a desired distance from the support rail and the movable tip portion of the pivot junction to either end position. The gearbox design is applicable to all gearbox types, regardless of their radius.

10

Known gear structures have drawbacks which, if left unchecked, can cause serious problems, in the worst case even derailment of the rolling stock and thus very great damage. These problems are mainly due to vibrations due to the length and / or movements of the 15 tongues, which cause a somewhat uncontrolled movement of the tongues.

The problems are exacerbated as traffic speeds increase.

Known structures have not shown good solutions for damping the vibrations produced by the rolling stock. In addition, the problems associated with the gears are exacerbated by the accumulation of contaminants, which reduces the positioning accuracy of the tongues with respect to the support rails.

As an attempt to control the problems, known solutions have used intermediate bar locks in the area of the moving part of the tongues.

25 In turn, one or more adjusters and various associated levers have been used to control the interlocks.

One prior art solution is disclosed in Finnish patent 81646, which discloses a gearbox having at least one multi-arm lever loaded on a tongue rail and pivoted about a fixed pivot axis. The lever can be operated with adjustable tongue rails. The apparatus ;. sa is determined by the distance of the tongue from the counter rail by a fixed, co-operative stop independent of the counter rail and possibly adjustable.

In general, all the functions according to the above-mentioned patent pass through the articulation mechanisms. However, articulation mechanisms in rail traffic are uncertain and problematic. For example, 2 94975 gears support causes shifts in structures that should be avoided in every way.

In addition, as a disadvantage of the prior art step-5 structure, it can be argued that the structure completely ignores the problems posed by the thermal elongation of long tongue structures, as the elongation naturally causes angular changes in the joint mechanisms. On the other hand, the vertical oscillations of the tongues place a considerable load on the joint mechanism, which easily causes malfunctions.

Another disadvantage of the structure of the previous publication is that the equipment remains in the intermediate position when opened, in which case both tongues of the gear unit are in the open position and the gear unit is completely unusable. According to the above-mentioned publication, the control of the moving tip of the intersection is impossible or at least cumbersome.

The object of the present invention is to provide a gear structure which overcomes the above-mentioned disadvantages of the prior art and provides a mechanism with a simple and reliable structure which takes into account the issues essential for safe operation and operational safety.

The gear structure according to the invention is suitable for use in any situation, regardless of the type or radius of the gear. It takes into account changes in the length of the languages and angular changes during translation between the language structures in a controlled manner. The vertical movement of the tongues is also taken into account in the structure according to the invention by allowing movement to a limited extent. This prevents dangerous loading of the structure 30 due to the above movements.

The gear structure according to the invention is also suitable for use in an open gear and likewise for controlling the movable tip of a pivoting junction. The structure according to the invention is easy to encapsulate completely, whereby it is protected from impurities and, in some respects, reliable.

The above and other advantages and advantages of the present invention are provided by a gear structure characterized by il: sa i aim il t St! 3,94975 given in the appended claims.

The invention will now be described in more detail with reference to the accompanying drawings, in which:

Figure 1 shows a gear structure according to the invention seen directly from above;

Figure 2 shows a second embodiment of a structure according to the invention;

Figure 3 shows the structure of Figure 2, but now applied to a different type of gear; Fig. 4a shows a top view of a carriage of a structure according to the invention;

Fig. 4b shows a side view of the carriage according to Fig. 4a, and the structures shown in the figures are schematic representations of the invention and are therefore not intended to limit the invention, but to give general guidelines for carrying out the invention.

In addition, the structure according to the invention is shown in the figures without the cover part of the housing, which would normally belong to the structure.

25

Figure 1 thus shows an overview of the general application of the structure * according to the invention, seen from above and with the lid open to show the parts. The gear unit includes support rails 12 and 13 and gear unit tongues 6 and 7 in the normal manner. Thus, in the conventional manner, the desired one can be selected from the two directions to be driven by moving the tongue sections between the two stations so that the rail vehicle is guided in either direction.

To guide the tongues 6 and 7, an intermediate rod 3 is placed, which can be fixed to the length-35 delta or adjustable as required. The intermediate rod passes through a housing 1 which is attached to the track sleepers or is part of the sleepers and at the same time also through a carriage 2, on the support surfaces of which the intermediate bar rests. The intermediate bar 3 pierces the structures of the carriage 2 so that it moves freely in its longitudinal direction through the carriage 2, but in the other directions 4 94975 the fit is tighter.

The locking of the intermediate bar to its extreme positions is ensured by the power accumulators 4, in particular the spring means, which press the intermediate bar tightly towards its extreme position, whether in the embodiment shown in Figure 1 it is either the left or right extreme position. There are preferably two or an even number of spring means 4, whereby the load they cause on the intermediate rod 3 is even, and thus does not cause obstacles to the movement of the intermediate rod. The power batteries 4 are supported on the inner surface of the carriage 2.

10

The carriage 2 is located inside the housing 1 and is supported with limited movement on the bottom of the housing. The attachment will be described in more detail later. It is generally indicated in Figure 1 by reference numeral 5.

When the gear according to Fig. 1 turns from the position shown to its other position to the right in the figure, the tongues 6 and 7 and the connecting rod 3 connecting them move to the right. The spring means are compressed until they are perpendicular to the intermediate rod. As the movement continues, the spring means 4 20 begin to lengthen and transmit their force to the intermediate rod and thus to the tongues. In the final situation, the tongue 7 is against the support rail 12 and the tongue 6 is in turn detached from the support rail 13. The transition of the tongues to different positions can be achieved either by means of the wheels of the rail vehicle or by using a separate adjusting device not shown.

25

Fig. 2 shows another embodiment of the structure according to the invention, in which the structure described in connection with Fig. 1 is used connected only to the second tongue 6 of the gear. In this situation the intermediate rod 3 is otherwise completely analogous to 30 described above, except that the second tongue portion of the rod is now removed . The locking of the structure according to the invention is very useful in general for the more problematic! to control the language of the curve. In this embodiment, the languages can be controlled by a separate setter from different transfer points.

35

Fig. 3 shows a structure analogous to Fig. 2, now applied to the pivot tip junction of the gear, so that the intermediate rod 3 is attached to guide the movable tip portion 14 of the junction. Reference numerals 10 and 11 in this case denote the support rails on which the tip part rests in its various positions.

Figure 4a shows in more detail the carriage 2 of a gearbox according to the invention. It is essential for the invention that the carriage 2 is such that it adapts to the movement of the rails to which the intermediate bar 3 is attached due to temperature. On the other hand, it is advantageous that the carriage 2 also allows a limited vertical movement 10 and thus allows the vibrations of the rails not to overload the joints.

Thus, a solution enabling the movement of the carriage 2 according to the invention is shown in Figures 4a seen from the side and in Figure 4b seen from above. In this particular embodiment, the carriage 2 consists, for example, of an open box-shaped part, through the side walls of which the intermediate bar 3 passes. Thus, for example, the movement caused by the thermal expansion of the rails is transmitted from the intermediate rod 3 attached to the rails to the carriage 20 itself, whereby the carriage is displaced in a corresponding manner with respect to the fasteners 5.

This exemplary movement-allowing system 5 consists of at least one pin 52 fixed to the housing 1, which pierces 25 an elongate hole made in the bottom of the carriage 2, the width of which is approximately equal to the thickness of the pin 52. The pin or pins 52 are provided at their upper ends with stop plates 53, the purpose of which is to leave a small tolerance on the carriage for vertical movement, but to limit the movement to a rather small extent. In other words, the carriage 30 can move both in the longitudinal direction and also in the vertical direction of the rails to which the intermediate rod 3 is attached to a limited extent.

If desired, other restraints can be placed on the movements, such as spring-like members that resist movement. In particular, coil springs (not shown) around the pins 52 are possible as limiters of the vertical movement 35. It will be appreciated that limiters other than those set forth above may be used. As self-evident limiters, for example, those that come from the side of the carriage onto its base plate could be used.

94975 6

The solution according to the invention has been described above with reference to an embodiment thereof. It is clear, however, that within the inventive idea, various modifications can be made to it without departing from its spirit and scope.

5 • · 4

Claims (6)

7 94975 A gear structure comprising at least one rail movable between two positions, to which a spacer rod (3) is attached, to which 5 power batteries (4) are in turn connected to maintain the selected position, characterized by a carriage (2) associated with the spacer rod (3). fixed to its base at least in the longitudinal direction of the rails. Gear structure according to Claim 1, characterized in that the carriage (2) is fastened to its base both in the longitudinal direction and in the vertical direction. Gearbox structure according to Claim 1, characterized in that the fastening is provided by means of an elongate slot or slots 15 (51) and corresponding pins (52). Gear unit according to Claim 3, characterized in that the vertical movement of the carriage (2) is limited by means of stops (53) belonging to the pin or pins (52). 20 Gearbox structure according to one of the preceding claims, characterized in that the carriage (2) has a generally gutter-like or box-like structure, the intermediate bar (3) piercing the side walls of the carriage in a relatively tight fit. 25 Gear unit according to one of the preceding claims, characterized in that the carriage (2) is arranged on the housing bracket (1). 8 94975