WO1994002682A1

WO1994002682A1 - Roller device

Info

Publication number: WO1994002682A1
Application number: PCT/EP1993/001872
Authority: WO
Inventors: Sebastian Benenowski; Albrecht Demming; Hans-Ulrich Dietze; Alfred Kais; Erich Nuding
Original assignee: Bwg Butzbacher Weichenbau Gmbh
Priority date: 1992-07-22
Filing date: 1993-07-16
Publication date: 1994-02-03
Also published as: FI950219A; ATE180849T1; AU4569793A; PL307228A1; PL176589B1; FI950219A0

Abstract

Proposed is a roller device (14) for rails (10, 12) designed to be moved with respect to each other. The device immobilizes the mobile rail (12) relative to the stationary rail (10) in the closed or open position on a base (16) and in an intermediate position is separated from the base.

Description

description

Role setup

The invention relates to a roller device for a second track part, which is adjustable to a first track part and can be supported on a rolling element, which, with respect to the first track part, rests on a base such as a sliding chair in a remote and adjacent position and is spaced between them to the base.

Roller bearings for switch tongues are known, by means of which it is possible to support the switch tongue only on a sliding chair when it is in and against a stock rail. For this purpose, the switch tongue foot can be supported on a roller between the lying and lying position (AT 375 697, DE 314 265).

In order to reduce the friction when adjusting a switch tongue, rolling devices are used which originate from brackets lifted by compression springs (EP 0 389 851 A2).

In the case of a switch tongue rolling device according to DD 56 536, a switch part starts from a molded part on which supporting rollers are supported on a resilient rolling surface. DE-B 1 056 641 shows a resilient, height-adjustable roller bearing for soft tongues. The spring used has a purely supporting function. The roller itself is mounted in a roller block, which is arranged in a cage of a bearing block. Since the spring used does not dampen, there may be knocks between the roller block and the bearing block. This in turn leads to shock loads on the tongue.

The present invention has for its object to develop a roller device of the type mentioned so that a further reduction in friction when adjusting the second track part is achieved from the adjacent to the remote position and vice versa. It should also be ensured that the second track part is fixed in its end positions independently of other track closures. Finally, the possibility is also to be created that vibrations introduced into the track part are damped to a sufficient extent, in particular to prevent impacts on the base such as a sliding chair.

The object is essentially achieved in that the roller element cooperates with a guide element, by means of which the roller element is subjected to a forced movement in such a way that the second track part lies with respect to the first track part in the on and off position on the base and between these positions are spaced from the base. In this case, the guide element itself can start from the second track part or be arranged essentially stationary with respect to this, in which case the roller element itself is mounted on the second track part.

In particular, the guide element on the roU side can have a cranked guide line or surface sliding along the roller element with an average distance projecting in the direction of the roller element and two outer portions running in one plane and set back to the central portion. According to a further embodiment, in which the roller element originates from the second track part or a holder fastened to it, it is provided that the roller element is guided in a guideway running below the base with a central section which is offset from one plane in the direction of the base and which starts from two outer sections running in the plane.

In an embodiment of the invention that is to be emphasized, it is provided that the second track part is held down in its abutting and lying position over the roller element on the support, so that when vibrations are initiated, beating on the support like sliding chair is excluded.

An independent solution suggests that the roller element is supported by a spring element which effects at least one damping.

In particular, it is provided that the roller element is supported on at least two spring elements, the spring elements being mechanically coupled to one another in such a way that the roller element holds the second track part down on the support in its resting and resting position and in the area in which the track part is spaced from the base, is resiliently supported. In the end positions, a spring element acts as a tension spring, whereas the other spring element has no effect. In the area in between, however, the latter spring element acts as a compression spring, whereas the first res shows no spring properties.

According to a preferred embodiment, the spring elements are based on a common support plate which is displaceable in a receptacle and can be placed against a stop, the first spring element acting as a compression spring running between the support plate and the bottom surface of the receptacle facing this. The second spring element, which acts as a tension spring, runs between the support plate and an element that is spaced apart for receiving and has the guideway. With the teaching according to the invention, the second track part is raised from the locked position, in which the switch tongue is held down on the sliding chair, in order to be moved into the remote position without touching the surface, such as sliding chair, in which a hold-down on the surface then takes place again .

Since there is no contact with the sliding chair when the second track part is pivoted, lubricants between the sliding chair and the track part are consequently basically no longer necessary.

The fact that the second track part is supported by resilient and in particular damping roller elements ensures that the track part cannot be set into vibrations in the positions resting on the sliding chair in such a way that blows act on the sliding chair. For this purpose, it is particularly provided that a potential energy is stored in the tensioned tension spring, which is greater than the normally possible kinetic energy that can be introduced into the second track part.

In order to ensure, in particular, that the second track part such as a switch tongue does not hit a support such as a sliding chair when vibration is excited, a roller device is provided for a second track part that is adjustable to a first track part and can be supported on a rolling element and that at least in relation to the first track part The first position in contact rests on a base such as a sliding chair and is spaced apart from the position to the base, which is characterized in that the roller element is supported on at least two spring elements of different characteristics, that the one spring element has an essentially constant rigidity and the other spring element has a variable rigidity and that the spring elements are mechanically coupled to one another in such a way that when the roller element is loaded by the second track part such as the tongue, each spring element has a resilient state. In particular, it is provided that the spring elements extend on opposite sides of a carrier element and can be adjusted in a distance-adjustable manner with respect to one another via a connecting element such as a screw, that the spring element effecting damping runs with the variable rigidity on the side of the carrier element facing away from the tongue, that the spring element with the Variable stiffness when the roller element is not loaded is attracted by the connecting element against the support element in such a way that a spring effect is excluded or essentially excluded, and that when the roller element is loaded, each of the spring elements has usual additional loading and unloading of the roller element to accommodate spring travel lengths .

The spring elements are, on the one hand, a suspension spring and, on the other hand, a damping spring, at least the latter, but preferably both being elastomer springs. The damping spring has a stiffness that is preferably ten times smaller than that of the suspension spring.

When prestressing the spring elements, i.e. when the roller element is not loaded, the damping spring is set to Biock or almost to block, in order to then move to a working position (working point) with the roller element loaded by the tongue (working point), which makes it possible for conventional Loading and unloading (tongue loading) of the roller element the pretension point, ie the block position is not reached.

At the operating point, the damping spring provides suspension and thus damping in both directions, so that the tongue cannot be hit on a surface such as a sliding chair. At the same time, due to the damping properties of the damping spring, rapid vibration reduction in the tongue itself is brought about.

The stiffness of the suspension spring determines the working position of the roller elements, i.e. the level at which the tongue comes to rest. According to a further embodiment of the invention that is to be emphasized, the roller element can start from a receptacle in which the second track part, such as the tongue, can be positively fixed, for example, in the lifting position. The recording itself can be connected to the stock rail in the usual way, but preferably with support such as a threshold. The latter measure causes a further decoupling from the stock rail.

By fixing the tongue in the remote position, it is ensured that vibrations introduced cannot lead to undesired hitting of the switch tongues and thus to undesired wear.

In the case of the first and second track parts, the first track part can be a stock rail or a wing rail and the second track part can be a switch tongue or a frog tip.

Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - by themselves and / or in combination - but also from the following description of preferred exemplary embodiments which can be found in the drawing.

Show it:

1 shows a first embodiment of a guide element cooperating with a roller element for a switch tongue in its position remote from a stock rail,

Fig. 2 shows the embodiment of FIG. 1 with the switch tongue in one

Position that lies between the on and off position,

3 shows the embodiment of FIG. 1 with the tongue attached, 4 shows a section along the line AA in FIG. 3,

5 shows a second exemplary embodiment of a guide element of a switch tongue interacting with a roller element in the position corresponding to FIG. 1,

6 shows a representation of the second exemplary embodiment corresponding to FIG. 2,

7 shows a representation of the second exemplary embodiment corresponding to FIG. 3,

8 shows a section along the line AA in FIG. 7,

FIG. 9 shows a representation corresponding to FIG. 6, but during an incorrect journey,

10 shows a third embodiment of a roller element of a tongue interacting with a guide element in the position corresponding to FIG. 1,

11 shows the third exemplary embodiment in that corresponding to FIG. 2

Position,

Fig. 12 shows the third embodiment in that corresponding to FIG. 3

Position,

13 shows a section along the line AA in FIG. 12,

Fig. 14 shows a fourth embodiment of a cooperating with a guide element roller element of a switch tongue in the 1 corresponding position,

Fig. 15 shows the fourth embodiment in that corresponding to Fig. 2

Position,

FIG. 16 shows the fourth exemplary embodiment in that corresponding to FIG. 3

Position,

17 shows a section along the line AA in FIG. 17,

FIG. 18 shows a position of the switch tongue corresponding to FIG. 15, but in the event of an incorrect travel.

19a-d show a diagram of spring characteristics of spring elements supporting a roller element with their corresponding positions and

Fig. 20 is a schematic diagram of a threshold starting and up

Spring elements supportable roller elements.

The teaching according to the invention is described below using the example of a switch tongue (12) which can be adjusted to a stock rail (10), without this being intended to impose a restriction. Rather, an analogous transfer to z. B. a spring-moving centerpiece tip with associated wing rails easily possible.

1 to 17, in which basically the same elements are provided with the same reference numerals, it should be clarified that the switch tongue (12) associated with the stock rail (10) interacts in this way via guide elements with at least one roller element (14) that the switch tongue (12) in its adjacent position (Fig. 3, 7, 12, 16) and in its remote position (Fig. 2, 5, 10, 14) on a sliding chair (16) is supported and fixed there or locked and is spaced in the area between these positions, ie when pivoting from the locked into the open position to the sliding chair (16) or a corresponding base. These positions are shown in FIGS. 2, 6, 1 1 and 15.

In the exemplary embodiments in FIGS. 1 to 8, the roller element or elements (14) are based on bow-shaped holders (17) which can be connected to the stock rail (10) in the usual way. Alternatively, of course, there is also the possibility that ß the roller elements (14) mounting brackets (17) are connected with a support such as a threshold, so that a decoupling from the stock rail (10) takes place.

The roller element (14) is arranged stationary with respect to the switch tongue (12). A guide element (18) extends from the switch tongue (12) and, in the exemplary embodiment, is connected to the underside of the foot (20) of the switch tongue (12) as is screwed or welded. The guide element (18), which can also be referred to as a guide plate, has a guide track or line (22) on the roU side, which is bent. The guide line or guideway (22) is composed of a central section (24) and two outer sections (26) and (28), which lie in mutually offset planes.

The section (24) protrudes in the direction of the roller element (14) in order to bring about a spacing between the underside of the tongue base (12) and the sliding chair (16) between the adjacent position of the switch tongue (12) when interacting with it.

So that the switch tongue (12) rests on the sliding chair (16) in its end positions, i.e. the locked or the opened position, the sections (26) and (28) run in a common direction with respect to the section (24) the stock rail or the switch tongue (12) offset plane. In order to prevent the switch tongue (12) from being obstructed in the locked position by the guide plate (18), this has a recess for the longitudinal edge of the stock rail foot (32) extending in the direction of the switch tongue (12).

The sectional view of Fig. 4 illustrates on the one hand the plate-shaped guide element (18) and on the other hand that the holder (17) consists of two spaced apart bow-shaped cheeks (34) and (36) in which the roller element (14) is mounted.

In order to give the holder (17) sufficient stability, the cheeks (34), (36) can be connected by a base plate (38) and have stiffeners (40).

The embodiment shown in FIGS. 5 to 9 differs from that of FIGS. 1 to 4 in that the roller element (14) is mounted in a cage (42) which is vertically displaceable in the holder (17) and on a spring element (14) can be supported, which has both a supporting and a damping function. The spring element (44) can be an elastomer spring.

The spring element (44) adjusts itself in such a way that when the switch tongue (12) is between the lying and lying position, ie in the area in which there is normally a spacing from the sliding chair (16) according to FIG. 6 In the event of an incorrect travel (indicated by a wheel (46) on the switch tongue (12)), damping takes place in such a way that the switch tongue (12) comes to rest on the sliding chair (16) without destroying the roller element (14).

10 to 17, the teaching is also realized on the one hand that the switch tongue (12) rests on the sliding chair (16) in the on and off position and is spaced between these positions from the sliding chair (16) and on the other hand in the end positions via the roller element (14) is locked. The roller element starts from the switch tongue (12). For this purpose, a U-shaped holder (46) is connected to the underside of the switch tongue foot (20) as if it were screwed on.

Rollers (52) and (54) then emanate from the outer sides of the legs (48) and (50) of the holder (56), which in the actual sense form the roller element (14).

The rollers (52) and (54) each run in a guideway (56) and (58) which are delimited by webs (60) and (62) or (64) and (66). The webs (60), (62), (64) and (66) go according to the embodiment of FIGS. 10 to 13 from the inside of the bow-shaped cheeks (34), (36) of the holder (18). The clear distance between the webs (60) and (62) or (64) and (66) is larger than the diameter of the rollers (52) and (45).

As illustrated by the side representations of FIGS. 10 to 12, the guideway (56) or (58) is composed of a central section (68) which is offset towards the switch tongue (12) and two lying in a common plane and away from the tongue (12 ) offset outer sections (70) and (72) together. If the tongue (12) is now pivoted from the adjacent position to the remote position or vice versa, the roller element (14) originating from the holder (46), that is to say the rollers (52), (54), passes from the outer section (70). or (72) to the central section (68). The rollers (52) and (54) are supported on the webs (62) and (66). This causes the switch tongue (12) (FIG. 11) to be lifted, so that a spacing from the sliding chair (16) is ensured.

In the end positions, the rollers (52) and (54) rest against the webs (60) and (64) in such a way that the foot (20) of the switch tongue (12) is pulled towards the sliding chair (16), that is to say it is held thereon , so that the initiation of vibrations cannot lead to impacts on the sliding chair (16). A safe hold down of the tongue (12) in its end positions with simultaneous damping can be achieved by the measure of the exemplary embodiment according to FIGS. 14 to 18, while at the same time ensuring that the roller element (16), if it is driven incorrectly (FIG. 18) the rollers (52) and (54) or their axes which are supported on the webs (62) and (66) cannot be damaged or destroyed.

For this purpose, the guideways (56) and (58) are supported by spring elements (74) and (76) which originate from a holding plate (78) which can be displaced in regions in a cage. The cage is laterally delimited by bow-shaped cheeks (80) and (82) of a holder (84) which corresponds to the holder (17) in terms of its basic structure.

The spring elements (74) and (76) can be elastomer springs.

The spring element (76), which can be called a compression spring, is connected on the one hand to the support plate (78) and on the other hand to the bottom (86) of the cage or the holder (84). The spring element (74), which can be referred to as a tension spring, extends between sleeves (96) and (98), one of which is from the support plate (78) and the other from a device (88) having the guideways (56) and (58), namely the bottom surface (90) of which runs out.

During operation, the spring elements (74) and (76) perform different functions.

Thus, in the end positions of the switch tongue, that is to say in its on and off position, the tongue is held down by the spring element (74), which acts exclusively as a tension spring. In these positions, the spring element (76) does not have a spring effect. In order to achieve this, the support plate (78) lies against a stop (100), (102) which starts from the inner wall of the cage, that is to say the inside of the cheeks (80) and (22) of the holder (84). When the switch tongue (12) is pivoted, only the spring element (76) acts as a compression spring and can therefore move between the stop (100), (102) and the bottom area (86) of the cage. At the same time, the spring element (74) lies on a block. For this purpose, the bottom (90) of the receptacle (88) rests on the sleeve (96) extending from the support plate (78), so that the spring properties of the spring element (74) are prevented.

During normal operation, the base element (90) of the receptacle (88) is spaced apart from the edges (92), (94) of the cage or the holder (84). However, if the switch tongue (12) is in the wrong position (Fig. 18) between the end positions, the rollers (52) and (54) cannot be destroyed by any other impact-like loads, since the compression spring (76) is effective is.

19 and 20 show further features to be emphasized of the teaching according to the invention, by means of which it is possible that a switch tongue to be supported or displaced on roller elements is damped to such an extent that striking on documents such as sliding chairs is suppressed is excluded. At the same time, this ensures that the roller elements themselves do not have any impact-like impacts leading to destruction, a disadvantage which is inherent in the roller elements which can be found in the prior art.

In FIG. 20, roller elements (107), (109) and (111) and a further roller element (113) are based on a receptacle (115) which, in side view, has a shape of a lying U with different leg lengths. The longer leg (101) faces a holder (106). The receptacle (115) is supported on spring devices (103) and (105), which in turn are fastened on the holder (106), which in the exemplary embodiment is based on a threshold (108). The holder (106) can be moved in the direction of or from a stock rail (108). For this purpose, side legs of the holder (106) have elongated holes (110) and (112) which connect the holder (106) to the threshold (108). binding fasteners such as screws is enforceable.

The receptacle (115) itself preferably consists of two U-shaped cheeks, in which the roller elements (107), (109), (111) and (113) are mounted and which are connected via e.g. a flat section is connected, which is fastened on the spring devices (103) and (105).

20 shows a switch tongue (114) to be assigned to the stock rail (108) on the one hand in the adjacent (solid line) and on the other hand in the remote position (dot-dash line). In the remote position, a section of the switch tongue foot (116) rests between the rollers (111) and (113), that is to say between the short leg (118) and the long leg (101) of the U-shaped receptacle (115) of the roller elements in side view (107), (109), (111) and (113). This measure has the effect that the switch tongue (114) is also virtually locked in the remote position in order to prevent it from striking.

Vibrations introduced into the switch tongue (114) are damped by the spring devices (103) and (105), each consisting of two spring elements (120) and (122) of different stiffnesses, while at the same time a quasi when the switch tongue (114) is at rest static condition is provided.

19 shows one of the preferably identical spring devices (103) and (105) and the properties of the individual spring elements themselves. Each spring device (103) or (105) consists of an upper and a lower plate element (124) and (126), preferably made of metal, and a support plate (128) running between them, which starts from the holder (106). Between the support plate (128) and the upper plate (124) on the one hand and between the support plate (128) and the lower plate (126), that is to say the cheek rail (108) on the other hand, the spring elements (122) and (120) extend differently Stiffness. The stiffnesses of the spring elements (120) and (122), which are elastomer springs, which are connected to the plates (124), (126), (128) or to portions, but not specified, starting from these, but vulcanized are purely in principle shown in Fig. La.

The spring elements (120) and (122) are mechanically coupled by a connecting element (130). This passes through the spring devices (103) and (105) centrally. In the exemplary embodiment, it is a screw (130) which rests with its plate-shaped head (132) on the outside of the plate (124) and its nut (134) lies on the outside of the plate (126) in order to tighten it Screw (130) to set the effective length of the screw (130) between the plates (124) and (126).

The spring element (120) is a damping spring with variable stiffness. The spring element (120) preferably has a progressive characteristic, as the left part of FIG. 19a is intended to illustrate.

The upper spring element (122) which is close to the stock rail (108) has a spring characteristic with constant or essentially constant rigidity and is intended to perform the actual carrying function.

In the unloaded state, the spring device (103), (105) has a position that corresponds to FIG. 1b. The plates (124) and (126), from which on the one hand the suspension spring (122) and on the other hand the damping spring (120) extend, are spaced apart from the support plate (128). In Fig. La this state coincides with the coordinate origin of the diagram, in which the force (tension / load) is plotted against the spring travel.

In order to bring the spring devices (103) and (105) into the working position (lifting the receptacle (115) into a position above the basic position in which the receptacle (115) is loaded - on the roller elements (107), (109) and ( 111) If the spring tongue (114) is supported - is set (Fig. 19b)), the screw (130) is tightened until the spring element (120) lies on a block or almost on a block, i.e. is pushed together in such a way that spring properties no longer exist demonstrate. This state corresponds to the bias point 2 in Fig. 19a.

The position in which the switch tongue (114) is supported on the roller elements (107), (109), (111) is shown purely schematically in FIG. 19d. The damping spring (120) is relieved by a spring travel - 5 units in FIG. 19a purely by way of example. At the same time, the suspension spring (122) is tensioned by the same spring travel, i.e. by 5 travel units in the drawing. This position corresponds to point 3 in Fig. 19a, which is the working point.

If vibrations are now introduced into the switch tongue (114), these can be completely absorbed by the spring devices (103) and (105) and in particular damped by the spring element (120) without striking; because the operating point 3 with respect to the spring characteristics is set so that the damping spring (120) can not reach its block position. In this way, the resilient state of the spring devices (103) and (105) is ensured both when the spring tongue (114) is loaded and relieved.

Claims

Rolleneiπrichtung

1. Roller device for a second track part (12) that is adjustable to a first track part (10) and can be supported on a rolling element (14), which, in relation to the first track part, rests on a support (18) like a sliding chair in a remote and adjacent position and between them is at a distance from the base, characterized in that the roller element (14) interacts with a guide element (18, 56, 58) by means of which the roller element is subjected to a forced movement in such a way that the second track part (12) with respect to the first track part (10) rests on the base (18) in the adjacent position and is spaced from the base between these positions.

2. Roller device according to claim 1, characterized in that the guide element extends from the second track part (12) and on the roU side a guide line or line (22) sliding along the roller element (14) with one in the direction of the roller element jumping mid-section (24) and two outer sections (26, 28) running in a common plane and set back to the middle section.

3. Roller device according to claim 1, characterized in that the roller element (14) extends directly or indirectly from the second track part (12) and is arranged displaceably in a guideway (56, 58), one towards the base (18) comprises a central section which is offset in a plane and which starts from two outer sections (70, 72) which run in the plane.

4. Roller device according to at least one of the preceding claims, characterized in that the second track part (12) is held down in its abutting and lying position on the roller element (14) on the support (18).

5. Roller device according to at least one of the preceding claims, characterized in that the roller element (14) is supported by a damping spring element (44).

6. Roller device according to at least one of the preceding claims, characterized in that the roller element (14) is supported on at least two spring elements (74, 76) which are mechanically coupled to one another in such a way that the second track part (12 ) only one of the spring elements (74) with tension spring function acts and that in the intermediate position only the other spring element (76) acts with compression spring function.

7. Roller device according to at least one of the preceding claims, characterized in that the spring elements (74, 76) of a common in a receptacle (84) displaceable and can be placed on a stop (100, 102) support plate (78) that the first spring element (76), which performs a compression spring function, runs between the support plate and this bottom-side surface (86) of the receptacle, that the second spring element (74), which essentially performs a tension spring function, between the support plate and one for receiving element (88) which can be spaced apart and has the guide track (56, 58), the second track part (12) being held down in its on and off position by means of the second spring element (74) and in the intermediate position via the spring element ( 76) can be supported.

8. Roller device according to at least one of the preceding claims, characterized in that the tension spring (74) in the tensioned state has stored a potential energy which is equal to or greater than the kinetic energy which can be introduced into the second track part (12) under normal conditions is.

9. Roller device for a second track part (12) which can be supported on a first track part (10) and which can be supported on a roll element (14) and which rests in relation to the first track part in a remote and adjacent position on a base (18) such as a sliding chair and preferably between this is spaced from the base, characterized in that the roller element (14) is supported on at least two spring elements (74, 76) which are mechanically coupled to one another in such a way that only one of the two track parts (12) is in and off the position of the spring elements (74) with tension spring function and that only the other spring element (76) with compression spring function acts in the intermediate position.

10. Roller device according to at least one of the preceding claims, characterized in that that the first track part is a stock rail (10) or a wing rail and the second track part is a switch tongue (12) or a frog tip.

11. Roller device for a to a first track part (108) adjustable on a rolling element (107, 109, 111, 113) supportable second track part (114), which with respect to the first track part at least in the adjacent (first) position on a base such as The sliding chair rests and is spaced from the base outside the first position, characterized in that the roller element (107, 109, 111, 113) is supported on at least two spring elements (120, 122) of different characteristics, that the one spring element (122) a substantially constant rigidity and the other spring element (120) have a variable rigidity and that the spring elements are mechanically coupled to one another such that each roller element (107, 101, 111) loaded by the second track part (114) has a resilient state .

12. Roller device according to claim 11, characterized in that the spring elements (120, 122) extend on opposite sides of a carrier element (128) and can be adjusted by means of a connecting element (130) such that the spring element (120) causing a damping can be adjusted with the Variable stiffness runs on the side of the support element facing away from the second track part, such as tongue (114), such that the spring element with the variable stiffness when the roller element (107, 109, 111) is not loaded is attracted by the connecting element against the support element such that a spring effect is excluded or essentially excluded, and that when the roller element is loaded, each of the spring elements has the usual additional spring and path lengths which absorb and relieve the roller element.

13. Roller device according to at least one of the preceding claims, characterized in that the roller element (107, 109, 111, 113) starts from a receptacle (115) in which the second track part (114) can be fixed in the remote position, the receptacle preferably indirectly or directly from the support such as threshold (110).

14. Roller device according to at least one of the preceding claims, characterized in that the spring elements (120, 122) are elastomer springs.

15. Roller device according to at least one of the preceding claims, characterized in that the connecting element (130) is a screw.