Bearing for Supporting Roller

Abstract

Bearing for at least one supporting roller of a carriage, which supporting roller is supported on at least one bearing surface, comprising at least one axle device which can be rotated about at least one rotational axis, at least one rocker which is connected to the axle device such that it is reliably driven, wherein, at an end which lies opposite the axle device, the rocker has at least one first connecting device for connecting the rocker to the supporting roller, at least one spring device which is arranged mechanically between the axle device and/or the rocker on one side and at least one holding device on the other side, wherein a force which forces the supporting roller onto the bearing surface can be built up on the axle device and the rocker by means of the spring device, and at least one damping device, by means of which a rotational movement of the axle device about the rotational axis can be damped, characterized in that the spring device and the damping device are configured in one piece at least in regions by way of at least one torsion spring element which is of rubber-elastic configuration at least in regions.

Claims

1. Bearing (3) for at least one supporting roller (5) of a carriage, which supporting roller is supported on at least one bearing surface, comprising at least one axle device (21) which can be rotated about at least one rotational axis (37), at least one rocker (17) which is connected to the axle device (21) such that it is reliably driven, wherein, at an end which lies opposite the axle device (21), the rocker (17) has at least one first connecting device (15) for connecting the rocker (17) to the supporting roller (5), at least one spring device (27) which is arranged mechanically between the axle device (21) and/or the rocker (17) on one side and at least one holding device (23) on the other side, wherein a force which forces the supporting roller (5) onto the bearing surface can be built up on the axle device (21) and the rocker (17) by means of the spring device (27), and at least one damping device (27, 33, 35), by means of which a rotational movement of the axle device (21) about the rotational axis (37) can be damped, characterized in that the spring device and the damping device are configured in one piece at least in regions by way of at least one torsion spring element (27) which is of a rubber elastic configuration at least in regions.

2. Bearing according to claim 1, characterized in that the supporting roller (5) comprises at least one roller element (7) which can be rotated around at least one rolling axis (11), wherein the roller element (7) is preferably mounted in at least one roller fork (9), in particular the roller fork (9) is mounted around at least one pivot axis (13) which runs substantially perpendicularly to the rolling axis (11) and/or the rotational axis (37), wherein the pivot axis (13) and the rolling axis (11) preferably intersect or run in a skewed manner in relation to each other.

3. Bearing according to claim 1, characterized in that the vehicle is configured in the form of at least a trailer, at least a load truck and/or at least a lift truck, preferably a forklift truck, in particular with a five wheel chassis, and/or comprises at least one support structure, such as at least one support frame, wherein the holding device (23) is preferably supported on the mechanical side facing away from the spring device (27) at least indirectly on the support structure, in particular is connected to the support structure.

4. Bearing according to claim 1, characterized in that the rotational axis (37) runs substantially perpendicularly to the normal direction of the bearing surface.

5. Bearing according to claim 1, characterized by a plurality of rockers (17) connected to the axle device (21) and/or a plurality of supporting rollers (5), wherein every rocker (17) comprises at least one first connecting device (15) for connection to at least one supporting roller (5) and/or for connecting the rocker (17) to at least two supporting rollers and/or the bearing is comprised of at least one coupling torsion bar (1).

6. Bearing according to claim 1, characterized in that the axle device (21) on one side and the rocker (17) and/or rockers (17) on the other side are connected to one another by means of at least one second connecting device (19), wherein the second connecting device preferably comprises at least one connection acting in a force fitting, form fitting, and/or integrally bonded manner, in particular at least one welded connection (19), screw connection, snap-on connection, plug connection and/or press connection.

7. Bearing according to claim 1, characterized in that the spring device (27) comprises at least one thermosetting, thermoplastic and/or elastomer material, such as polyurethane, ethylene propylene diene monomer (EPDM), caoutchouc and/or rubber.

8. Bearing according to claim 1, characterized in that the spring device (27) is connected to the axle device (21) and/or the rocker (17) or at least one rocker (17) by means of at least one, preferably at least one holding element (30) comprising a third connecting device (29), wherein the third connecting device (31) preferably comprises at least one connection acting in a force fitting, form fitting, and/or integrally bonded manner, in particular at least one welded connection, adhesive connection, vulcanized connection, tongue and groove connection, connection (29) comprising at least one projection engaging in at least one recess, plug connection, snap-on connection and/or press connection, wherein the spring device (27) preferably is connected to the holding element (30) in an integrally bonded manner and/or the holding element is connected to the rocker (17) and/or the axle device (21) in a form fitting manner.

9. Bearing according to claim 1, characterized in that the axle device (21) and/or the rocker (17) comprise, in particular in the region of the second connecting device (19), at least one metallic material and/or, in particular in the region of the third connecting device (29), at least one plastic material, preferably a hard plastic material.

10. Bearing according to claim 1, characterized in that the spring device (27) is connected to the holding device (23) by means of at least one fourth connecting device (31), wherein the fourth connecting device (31) preferably comprises at least one force fitting, form fitting, and/or integrally bonded connection, in particular at least one welded connection, adhesive connection, vulcanized connection (31), tongue and groove connection, connection comprising at least one projection engaging in at least one recess, plug connection, snap-on connection and/or press connection.

11. Bearing according to claim 1, characterized in that the holding device (23), in particular in the region of the fourth connecting device (31), and/or the holding element (30) comprise at least one plastic material, in particular a hard plastic material, such as polyamide.

12. Bearing according to claim 1, characterized in that the damping device comprises at least one friction element (33), which is connected to the axle device (21) and/or the rocker (17) so that it is reliably driven rotationally and is supported on at least one friction surface of the holding device (23) and/or spring device (27).

13. Bearing according to claim 12, characterized in that a frictional force, with which the friction element (33) is supported on the friction surface, can be changed by means of at least one adjusting element (35).

14. Bearing according to claim 1, characterized in that the spring device (27) is penetrated at least in regions by the rocker (17) and/or the axle device (21), wherein preferably the friction surface is configured on a side of the spring device (27) facing away from the third connecting device.

Description

[0030] The drawings show:

[0031] FIG. 1 A perspective view of a coupling torsion bar comprising a bearing according to the invention; and

[0032] FIG. 2 A detailed view of the coupling torsion bar in FIG. 1 in accordance with Section A.

[0033] FIG. 1 depicts a coupling torsion bar 1 according to the invention. The coupling torsion bar 1 comprises two bearings 3 according to the invention. The bearings 3 make it possible for the supporting rollers 5 to rest on a bearing surface (not shown) with a prescribed contact pressure. The supporting rollers 5 are configured as supporting rollers that can pivot freely. In this case, the supporting rollers 5 comprise roller elements 7, which are mounted in a roller fork 9 so they can rotate around a rolling axis 11. The roller fork 9 is mounted in turn in a first connecting device 15 so that it can pivot around a pivot axis 13.

[0034] The respective supporting roller 5 is connected to a rocker 17 by means of the first connecting device 15. The rocker 17 is in turn connected to an axle device 21 so that it is reliably driven rotationally in an integrally bonded manner by means of a second connecting device in the form of a welded connection 19.

[0035] As FIG. 2 in particular shows, the bearing 3 comprises a holding device 23, by means of which the coupling torsion bar 1 can be connected to a support structure (not shown) of the vehicle. For this purpose, the holding device 23 comprises connecting elements 25.

[0036] The bearing 3 comprises in particular a spring device 27 arranged mechanically between the holding device 23 and the rocker 19 or the axle device 21. The spring device 27 is configured as a rotational spring element, which comprises a polyurethane material in regions. The spring device 27 is connected in a reliably rotationally driven manner to the rocker 17 and thereby to the axle device 21 via a second connecting device 29. For this purpose, the third connecting device comprises at least one holding element 30 preferably comprising polyamide, which is connected to the spring device 27 in an integrally bonded manner. In particular, a form fitting connection is made between the rocker 17 and the end of the spring device 27 facing the rocker 17, in particular the holding element 30 connected in an integrally bonded manner with said end.

[0037] In alternative embodiments, the rubber elastic region of the spring device 27 can also be directly connected in a form fitting manner to the rocker 17 or to the axle device 21. For this purpose, the axle device 21 and/or the rocker 17 can be surrounded for example in regions by the rubber elastic material of the spring device, in particular by means of overmolding.

[0038] Furthermore, the spring device 27 is connected to the holding device 23 by means of a third connecting device 31. In the process, the holding device 23 consists of a plastic material, in particular a hard plastic material such as polyamide, and a connection between the spring device 27 and the holding device 23 is accomplished via an integrally bonded connecting device 31. Consequently, the holding device 23 is configured to be one piece with the spring device 27 because of the material connection.

[0039] Overall, the spring device 27 in this example thus constitutes a multi-component plastic part configured in one piece within the meaning of the invention, comprising the region comprising a rubber elastic material, at which the holding device 23 and the holding element 30 are fastened by means of a material connection. In other words, the spring device 27 thus comprises the holding device connected in an integrally bonded manner and the holding element connected in an integrally bonded manner.

[0040] As FIG. 2 also shows, the spring device 27 is penetrated by the axle device 21. The spring device 27 thus sits rotatably on the axle device 21, wherein the transfer of the spring forces is accomplished via the integrally bonded connection between the holding device 23 and the rubber elastic region of the spring device 27 as well as via the form fitting connection of the holding element 30, which is connected in an integrally bonded manner to the rubber elastic region of the spring device 27, with the rocker 17 or the axle device 21.

[0041] A friction element 33 is fastened on the end of the axle device 21 facing away from the rocker 17. A contact pressure of the friction element 33 on the surface of the holding device 23 acting as the friction surface can be modified via a screw connection 35. By modifying the contact pressure by means of the screw connection 35, it is possible to change the effect of the friction element 33 acting as a friction damper and thereby change a damping of the rotational movement of the axle device 21 around a rotational axis 37. The spring device 27, more precisely the holding device 23 of the spring device, thus provides a friction partner of the friction damping.

[0042] In alternative embodiments (not shown), the friction element 33 can also rest directly on a surface of the rubber elastic region of the spring device 27, which then acts as the friction surface. For this purpose, the holding device comprises a corresponding recess for accommodating the friction element.

[0043] In contrast to the coupling torsion bars known from the prior art, the invention makes it possible for a spring device, by means of which the coupling torsion bar is fastened to a support structure of the vehicle, to be configured structurally in a simple manner, in that the spring device is configured by a multi-component plastic part in the form of a rotational spring element.

[0044] Thus, the spring effect of the spring device is determined by the dimension and the material of the rotational spring element. This determination can change independent of the damping properties of the damping device, which is partially configured in one piece with the rotational spring element. Thus, the spring device interacts with a friction element, which acts a friction damper.

[0045] The features disclosed in the foregoing description, in the claims and in the drawings can be essential for the invention in the various embodiments thereof both individually as well as in any combination thereof.

LIST OF REFERENCE SIGNS

[0046] A Section [0047] 1 Coupling torsion bar [0048] 3 Bearing [0049] 5 Supporting roller [0050] 7 Roller element [0051] 9 Roller fork [0052] 11 Rolling axis [0053] 13 Pivot axis [0054] 15 Connecting device [0055] 17 Rocker [0056] 19 Welded connection [0057] 21 Axle device [0058] 23 Holding device [0059] 25 Connecting element [0060] 27 Spring device [0061] 29 Connecting device [0062] 30 Holding element [0063] 31 Connecting device [0064] 33 Friction element [0065] 35 Screw connection [0066] 37 Rotational axis