EP0674049B1 - Roller apparatus - Google Patents

Abstract

The device has rollers (6) whose shafts are guided on both sides in a guide section (17), and fastened to it. The section is fitted into side pockets (18) of a roller seat housing (5). The pockets are open at the top. Removeable adjusting inserts (21) are located between the base (20) of the pockets and the guide sections. The guide sections are fastened to the roller seat housing via screws (19). The one-piece housing completely encloses the free chamber, which accommodates the rollers. It engages under the complete width of the rail foot (3).

Description

The invention relates to a rolling device according to the preamble of claim 1.

Such rolling devices are used in switch constructions to carry the switch tongue. They are preferably used in the sleeper area and carry the switch tongue in the switch position remote from the stock rail. When the switch tongue lies against the stock rail, the switch tongue preferably lies on a sliding chair plate attached to the threshold. The highest point of the rollers is preferably somewhat higher than the contact surface of the sliding chair. The result of this is that the switch tongue is raised when it is removed from the stock rail, so that no sliding friction occurs between the switch tongue and the sliding chair.

According to DE-A-16 58 366 it is known to arrange a height-adjustable rolling device of the type described at the beginning, which can be used in the vicinity of the threshold, and to fasten the rail base of the stock rail underneath it. It is also shown here that the rollers are arranged in a chamber which is free at the bottom, so that dirt, abrasion or snow and ice which occur cannot collect in the roller mounting space.

A disadvantage of the prior art has been shown that the rolling device described is very complex.

The invention has for its object to develop the rolling device of the known type such that it is simple and with few components and can be attached to the stock rail regardless of the threshold.

This object is achieved by the features of claim 1. Advantageous refinements and developments are described in claims 2-11.

The advantages achieved with the invention consist in particular in that a stable, versatile rolling device can be produced with simple means. This rolling device can advantageously be used for various stock rail sizes without additional measures.

When training with the features of claim 2, a height adjustment of the rollers can be made in a simple manner. The training according to claim 4 ensures a particularly stable design. In the embodiment according to claim 5, an extremely durable attachment to the rail base of the stock rail is achieved. The design according to claim 7 ensures easier conversion of the rolling device for insertion on stock rails of different sizes. The design according to claim 8 relieves the screw connection for fastening the clamping bolt. When manufacturing from iron or cast steel, preferably from spheroidal cast iron of one, several or all components of the rolling device, a simple and inexpensive manufacturing method has been found. This also applies to the training according to claim 10. With the training according to claim 11, an increased service life of the bearing is achieved if this is necessary in special applications.

Fig. 1

die Ansicht einer Rollvorrichtung in Verbindung mit der Weiche und

Fig. 2

eine Draufsicht auf die Rollvorrichtung nach Fig. 1.

An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it

Fig. 1

the view of a rolling device in connection with the switch and

Fig. 2

2 shows a plan view of the rolling device according to FIG. 1.

To carry the tongue 1 of a switch in the switching position remote from the stock rail 2, a rolling device is preferably used, which is attached in the sleeper area at the foot of the stock rail, under the latter. In Fig. 1 the stock rail 2 is cut and the switch tongue 1 shown in dash-dotted lines. Furthermore, Fig. 1 shows a hint of the contour of a foot 4 of a stock rail with a smaller cross section.

As shown in FIGS. 1 and 2, the rolling device consists of a roller receiving housing 5. This roller receiving housing 5 is formed in one piece and has a chamber 7 which is free at the bottom in the region of the rollers 6. This chamber 7 is completely enclosed by the roller housing 5. The roller housing 5 extends under the foot 3 of the stock rail 2 and projects beyond this on the side facing away from the roller. On the side facing the roller, the roller housing is designed with a rib 8 which engages over the foot 3 of the stock rail 2. On the side facing away from the roller, the roller receiving housing 5 has a longitudinal slot 9, in which a hammer head screw 10 is arranged for fastening a clamping bolt 11 which extends over the foot. The hammer head screw 10 forms a screw connection with a nut 12 with the interposition of preferably spring washers 13.

To relieve this screw connection, the clamping bolt 11 is supported on the side facing away from the rail base against a system 14. In the exemplary embodiment, direct support is provided. The support can also be done via intermediate pieces. This would be the case if the clamping bolt 11 were pushed forward to fasten a smaller rail foot 4, provided that no other clamping bolt 11 is to be used in this application.

The rollers 6 are formed on both sides with axle extensions 15 which engage in bores 16 of guide pieces 17. These guide pieces 17, which are arranged on both sides, lie in upwardly open side pockets 18 of the roller accommodating housing 5 and are connected to the latter with screws 19. In order to adjust the height of the rollers 6 in relation to the underside of the foot 3 of the stock rail 2, tuning inserts 21 can be inserted between the bottom surface 20, the pockets 18 and the guide pieces 17. The height of the switch tongue 1 to the rail head 22 of the stock rail can thus be adjusted, whereby tolerances in both the switch tongue 1 and in the stock rail 2 can be compensated for. Furthermore, this height adjustment can be used to easily adapt the rolling device to different cross-section rails. In particular, in contrast to the prior art shown, this height adjustment is very stable and does not change during operation or due to an overload.

Reference list

1

tongue

2nd

Stock rail

3rd

foot

4th

foot

5

Reel housing

6

role

7

chamber

8th

rib

9

Longitudinal slot

10th

Hammer head screw

11

Tension bolt

12th

mother

13

Spring washer

14

investment

15

Axis approach

16

drilling

17th

Guide piece

18th

bag

19th

screw

20th

Floor area

21

Vote insert

22

Rail head

Claims (11)

1. Rolling device having arranged in a chamber (7), which is free in the downwards direction, rollers (6) for the purpose of carrying the tongue (1) of a switch gear which in a height adjustable manner and arranged in the distance between adjacent sleepers and engaging below the rail foot (3) of the stock rail (2) is attached thereto, characterised in that the rolling device is fixed by means of a clamping device fixedly to the rail foot (3) of the stock rail (2) and the axles of the rollers (6) are guided as one on both sides in each case in a height adjustable guide piece (17), which is inserted in the upwardly open lateral pockets (18) of a roller receiving casing (5) and is attached thereto.
2. Rolling device according to claim 1, characterised in that replaceable coordinating inserts (21) can be inserted between the base surface (20) of the pockets (18) and the guide pieces (17).
3. Rolling device according to claim 1 or claim 2, characterised in that the guide pieces (17) are attached to the roller receiving casing (5) by means of screws (19).
4. Rolling device according to any one or several of claims 1 to 3, characterised in that the roller receiving casing (5) is formed as one piece which fully encompasses the free chamber (7) in which the rollers (6) are arranged and engages below the rail foot (3) over the entire foot width.
5. Rolling device according to any one or several of claims 1 to 4, characterised in that the roller receiving casing (5) engages over the rail foot (3) on the roller side with a rib (8) or claws and at the side remote from the rollers (6) by means of a releasable and/or adjustable tensioning bar (11).
6. Rolling device according to any one or several of the claims 1 to 5, characterised in that the tensioning bar (11) is attached by way of a screw connection to the roller receiving casing (5).
7. Rolling device according to claim 6, characterised in that the screw connection comprises a hammer head screw (10) which penetrates a longitudinal slot (9) or an elongated hole in the roller receiving casing (5).
8. Rolling device according to any one or several of claims 1 to 7, characterised in that the tensioning bar (11) is supported against the roller receiving casing (5) at the side remote from the rail foot (3) directly or by way of an intermediate piece laterally against a contact piece (14).
9. Rolling device according to any one or several of claims 1 to 8, characterised in that the roller receiving casing (5), the rollers (6), the guide piece (17) and/or the tensioning bar (11) consist of iron or casting steel, preferably spheroidal graphite iron.
10. Rolling device according to any one or several of claims 1 to 9, characterised in that the rollers (6) are formed as one piece with the axle extension pieces (15) inserted into the bores (16) of the guide pieces (17).
11. Rolling device according to any one or several of claims 1 to 10, characterised in that sliding sleeves are inserted between the roller axles or axle extension pieces (15) and bores (16) in the guide pieces (17).

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