JP5100296B2 - Device for switching point tongs - Google Patents

Description

  The present invention relates to a device for switching point tongs whose tong legs rest on the roller surface of a slide chair constituted by at least one roller pair.

  The switchable tong device placed at the point has a region-specific and different shape. In most European regions, mainly tong devices with a low tong cross section (so-called low depth-shallow depth rail profil) are used. This has the advantage that a tension bracket for the stock rail can be arranged under the tongs, in particular providing a space with a larger width than the mounting surface on the slide chair even after the tong legs have moved. I will provide a.

  In another large main group of point tongs, symmetrical rail cross-sections are used for the tong cross-section, which corresponds to the adjustment rail cross-section, which is usually also used for track rails. Therefore, the height of the tongue is approximately equivalent to the height of the stock rail (so-called high-depth rail profil).

  In this group, for example, a tong cross-section manufactured according to the AREMA standard (American standard) belongs, and the tong leg is partly in the area in front of the tong device and / or the British BS It is essentially narrower than the tongue cross section.

  The movement of the tongue section within the point is usually performed by a roller device that supports the tongue.

For example present on the sleepers, when the slide chair rib plate Patent Documents 1 and 2 are integrated into the roller system in the known market, the spacing between the rollers is very large, continuous on roller device And uniform movement is only conditionally or generally possible with very narrow tong legs. In this case, the tong leg rides on the first roller and then the tong leg edge in front of the first roller and the second roller until the tong leg is lifted again on the outer peripheral surface of the second roller and further carried. It falls into a wide space between the second rollers. This non-continuous movement can cause damage to the roller set, possibly caused by the tongs striking the roller frame between the rollers. In addition, this discontinuity greatly increases the switching force of the tongs, thus making point movement worse.

  Therefore, the problem underlying the present invention is to provide a point tong switching device of this kind which makes it possible to carry out easy and trouble-free transport even with point tongs with narrow tongs, without the disadvantages mentioned at the outset. .

The problem is that according to the invention, the lateral movement of the roller pair is such that the tongue moving on the roller pair is assisted by the third roller during the transition of the roller pair from the first roller to the second roller. The third roller is provided approximately at the center between the two rollers, and the roller outer periphery of the roller offset laterally overlaps the rollers of the pair of rollers . This makes it possible for the narrow leg of the point tong to always move unambiguously and effectively on at least two rollers with a triple roller arrangement at the time of switching . That is, when the maximum distance between the roller shafts of the third and first rollers or between the roller shafts of the third and second rollers exists at the approximate center between the two rollers, It is determined to be on or in contact with the two rollers by the edge.

In the present invention , the roller outer periphery of the roller pair and the roller offset laterally overlap each other. The outer circumference of two consecutive rollers, one of which is always a laterally offset roller, overlaps to ensure that the space between the front and rear rollers of the roller pair is filled or Bridged. However, this can also be assured even if the space between these rollers is somewhat larger than the width of the tong leg with the narrowest.

According to the proposal of the present invention, the first roller, the second roller, and the third roller of the roller pair are formed so as to be vertically adjustable. This allows a predetermined pre-adjustment so that the third roller is adjusted to be at least as high as the adjacent surface of the slide chair, preferably somewhat protruding from this surface. In this case, the height of the roller can be adjusted by means of a cam or an eccentric roller bearing, so that the roller can be easily and steplessly adapted to the height level of the pair of rollers or slide chair and adjusted position. Can be locked to.

The movement is further improved when the vertical height of the front roller located near the point tongue on which the tongue first moves is adjusted lower than the rear roller.

Horizontal especially if roller is offset in height unadjustable, according to an advantageous proposal of the invention, the vertical height of the roller is offset laterally are vertical front roller height The rollers are adjusted or arranged so as to be between the vertical height of the rear roller and the rear roller. Therefore, a roller surface inclined forward is obtained by the interaction of all the rollers.

According to the present invention , the third roller and a pair of rollers adjacent to and parallel to the third roller are supported on a common plate of the slide chair. The plate or rib plate is, for example, a component of the fixed frame that houses the roller together with its eccentricity adjusting part. The fixed frame movably integrated with the slide chair allows the front roller to be as close as possible to the tongue legs when adjusting the roller assembly, so that the movement when changing the tongue is as fast as possible.

  Further features and details of the invention can be derived from the claims and the subsequent description of the embodiments of the invention illustrated in the drawings.

FIG. 1 shows a point tong switching device 1 to which a stock rail 2 is fixed. Tongue tip 4 of point tongue 3 abuts on stock rail 2 (see FIG. 2). In addition to the position 5 that contacts the stock rail 2, the point tongue 3 is also illustrated at a position 6 that deviates from the stock rail 2. The point tongue 3 is stopped and moved on the roller surface of the fixed frame 8 formed in a plate shape by the narrow tong leg 7 during displacement movement. The fixed frame 8 is a point tongue switching device for positioning. One slide chair 9 is linearly movable.

  In this embodiment, the fixed frame 8 comprising a rib plate or plate 13 as a base support element has an interaction with the head plate (see FIG. 4), on the other hand, on the longitudinal axis and on the front roller 11a and rear The roller pair 10 having the second roller 11b is supported so as to be adjustable in height. On the other hand, the roller pair 10 is provided at approximately the center between the rollers 11a and 11b, spaced laterally offset from the roller pair 10 and is also adjustable in height--shown here. No--supported third roller 12 is attached, so that the point tongue 3 is always moved forward or backward 11a when it is displaced from its abutment position 5 to the offset position 6 or vice versa. 11b and a roller 12 offset laterally are supported. The attachment can be made so that the rollers 11a and 11b and the roller outer periphery of the roller 12 overlap each other. In any case, when the tongue leg 7 is located at the approximate center between the rollers 11a and 12 as shown for the tong 3 (position 6) deviated in FIG. Ensures that it rests on and is in contact with both rollers.

The third roller 12 bridges the space between the rollers 11a and 11b even though it is offset laterally, and even if it is a narrow tong leg 7, the point tong from the contact position 5 to the separation position 6 It is possible to always be on two rollers, ie, roller 11a and roller 12 or roller 11b and roller 12, respectively, when switching between three. This ensures movement of the continuous points tongue 3 calm, thereby, significantly reduce the tongue switching force within point.

As shown in FIGS. 1 and 2, the rollers 11 a, 11 b, and 12 that protrude from the common rib plate 13 of the fixed frame 8 disposed in the slide chair 9 have the front roller 11 a that substantially contacts the tongue leg 7. contact to, is moved to the stock rail 2 at a position 5 by the displacement of the fixed frame 8 in the direction of the tongue legs 7 points tongue 3 abuts, thereby, the movement at the time of switching points tongue is performed as soon as possible.

  If the front roller 11a and the central roller 12 are shown by the cam adjustment unit 14-here only for the rollers 11a and 11b-if adjusted lower than the rear roller 11b, the tongue 7 It can easily be stepped on the roller 12 offset laterally with the front roller 11a and further on the rear roller 11b. However, the height of the third roller 12 offset laterally should be pre-adjusted so as not to be less than or equal to the slide chair 9.

The stock rail fixed on the slide chair and the same arrangement in the slide chair, supported on the rollers of the roller set accommodated by the fixed frame, in contact with the stock rail and deviated from the stock rail The point tong switching apparatus which has the point tong illustrated in the state is shown with a perspective view. Fig. 2 shows the switching device of Fig. 1 as viewed from the side. As a detail of the switching device, a perspective view of a roller set including two rollers arranged one after the other or above and below and a third roller provided by being offset laterally with respect to these rollers is shown in a perspective view. The roller set of FIG. 3 seen from the adjustment surface on the right side is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Point tong switching device 2 Stock rail 3 Point tong 4 Tong tip 5 Contact position 6 Deviation position 7 Tongue leg 8 Fixed frame 9 Slide chair 10 Roller pair 11a Front roller 11b Rear roller 12 Third offset laterally Roller 13 Rib plate / plate 14 Cam adjustment part

Claims (4)

In a device for switching a point tongue (3) whose tong leg (7) rests on the roller surface of a slide chair (9) constituted by at least one roller pair (10),
The tongue (3) moving on the roller pair (10) is assisted by the third roller (12) during the transition of the roller pair (10) from the first roller (11a) to the second roller (11b). As shown in the figure, the third roller (12) is provided in the center of the roller pair (10) so as to be arranged next to the roller pair (10a). The rollers (11a, 11b) of the roller pair (10) ) And laterally offset rollers (12) , and the third roller (12) and a pair of rollers (10) adjacent to the third roller (12) are in common with the slide chair (9). Mounted on the plate (13), the common plate (13) contains a roller that can move laterally with respect to the point tongue (3) or the stock rail (2) against which the point tongue (3) abuts Apparatus characterized by being formed as because of the fixed frame (8).   The first roller (11a), the second roller (11a, 11b) and the third roller (12) of the roller pair (10) are formed so as to be vertically adjustable. Item 2. The apparatus according to Item 1.   The vertical height of the front roller (11a) disposed on the side of the position (5) where the tongue (3) contacts the stock rail (2) of the roller pair (10) is the rear roller (11b). 3. The device according to claim 2, wherein the device is adjusted to be lower than. Adjustment is performed so that the vertical height of the laterally offset roller (12) is between the vertical height of the front roller (11a) and the vertical height of the rear roller (11b). 4. The apparatus of claim 3 , wherein:

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