Articulated connections for carriages

Abstract

An articulated bearing device (1) for articulating a carriage of a rail vehicle, the articulated bearing device comprising two concentrically staggered articulated bearings (13, 14), namely a main bearing (13) as an outer bearing and a locking bearing (14) as an inner bearing, wherein the main bearing (13) comprises an outer convex bearing part (15) connected to a load-bearing connection part (2) and an outer concave bearing part (16) connected to a semi-hook connection part (3), and wherein the locking bearing (14) comprises: an inner convex bearing part (32) which is fixedly connected to the semi-hook connection part (3) via a bolt (30); and an inner concave bearing part (34) which is fixedly connected to the load-bearing connection part (2). The outer convex bearing part (15) has a spherically curved sliding surface (17) and is formed as a one-piece lower housing part (15) of the main bearing (13), which is directly connected to the load-bearing connection part (2) by means of a first screw connection. The outer concave bearing part (16) has a further sliding surface (18) and is formed as a one-piece upper housing part (15) of the main bearing (13), which is directly connected to the semi-tie connecting part (3) by means of a second screw connection and further comprises a bolt (30).

Description

Technical Field

[0001] The invention relates to an articulated bearing arrangement for the articulated connection of a carriage of a rail vehicle according to the preamble of claim 1 . Background Art

[0002] Such an articulated bearing arrangement is known from EP 0559 635 B1. The articulated bearing arrangement connects a load-bearing bottom part to a semi-hook bottom part, wherein each bottom part, i.e. the connecting part, comprises a plurality of plates. Here, the plates located at the top are fixedly connected to the load-bearing plates located below them via bows, wherein the load-bearing plates of the bottom part are arranged at the same height. The same applies to the plates located at the top.

[0003] The two bottom parts of the articulated bearing device according to EP 0 559 635 B1 are classified as the carriages of the rail vehicle that follow each other. The semi-hook bottom part is coupled to the load-bearing bottom part by means of two spherical, concentric hinges. There is a circular opening in the load-bearing bottom plate, into which a cylindrical shell is welded. The shell carries an annular convex spherical crown, which is a part of one of the two spherical hinges, namely the outer hinge. The concave part belonging to the same hinge is inserted into the annular shell, which is welded into the circular opening of the extension arm of the semi-hook bottom part. A bolt pointing downward is welded into the horizontal bottom surface of the mentioned annular shell, on which the convex part of the inner spherical second hinge is fastened. The inner spherical hinge is closed by a cover plate, which is inserted into the central opening of the cylindrical shell connected to the load-bearing bottom part.

[0004] Another articulated connection of a carriage is disclosed in EP 1 925 527 B1. In this case, the articulated part is designed as a radial articulated bearing having an inner ring with a convexly curved spherical bearing surface and an outer ring with a concavely curved spherical bearing surface. Here, the contacting sections of the bearing surfaces of the inner ring and the outer ring are different in size starting from the center point of the inner ring in the direction of the vertical bearing axis. The outer ring can be an expansion bearing ring.

[0005] DE 10 2005 056 983 A1 describes a method for extending the service life of an articulated bearing by performing pivoting and tilting movements with small amplitudes under heavy one-sided loads. In the context of the method, a limited wear zone is determined with the aid of a sensor device when the bearing is installed. The bearing is then disassembled and installed again in a rotational manner, so that the unworn area is now arranged in the load zone of the bearing.

[0006] EP 1 983 202 B1 discloses a coupler pressure bearing for use in a coupler between a carriage and a bogie of a rail vehicle, wherein an outer housing has a horizontally oriented base from which side walls and an intermediate rod originate. An articulated bearing element, referred to as an outer ball, is arranged at the outer housing or at least partially in the outer housing. In addition, there is a so-called inner ball, which is arranged at the intermediate rod, i.e., screwed thereto. The outer ball is located between the inner ball and the outer housing. Summary of the invention

[0007] The invention is based on the object of specifying an articulated bearing arrangement which is improved compared to the prior art and which is characterized by a particularly advantageous relationship between the required installation space and the mechanical loadability while being production-friendly in design and having a low susceptibility to wear.

[0008] This object is achieved according to the invention by an articulated bearing arrangement having the features of claim 1. In a basic solution known per se, an articulated bearing arrangement for articulating a carriage of a rail vehicle comprises two concentrically staggered articulated bearings, a main bearing as an outer bearing and a locking bearing as an inner bearing, wherein the main bearing comprises an outer convex bearing part connected to the load-bearing connection and an outer concave bearing part connected to the semi-hook connection. The locking bearing comprises an inner convex bearing part, which is fixedly connected to the semi-hook connection via a bolt, and an inner concave bearing part fixedly connected to the load-bearing connection, the name of the locking bearing being selected independently of whether locking is actually required in the operation of the articulated bearing arrangement.

[0009] According to the invention, the outer convex bearing part has a spherically curved sliding surface and is formed as a one-piece lower housing part of the main bearing, which is directly connected to the load-bearing connecting part by means of a first screw connection, and the outer convex bearing part has another sliding surface and is formed as a one-piece upper housing part of the main bearing, which is directly connected to the semi-mounted connecting part by means of a second screw connection, and the upper housing part also includes a bolt. The entire articulated bearing device is thus particularly compact and has a component-saving design. This reduces the time required for the initial installation of the articulated bearing device and at the same time reduces the personnel required for this purpose.

[0010] According to one possible embodiment, the lower housing part rigidly connected to the load-bearing connecting part has an outer side surface which is inserted into a receptacle of the load-bearing connecting part and which projects in the radial direction beyond the spherically curved sliding surface of the outer convex bearing part.

[0011] Here, a shoulder is formed between the spherically curved sliding surface of the outer convex bearing part and the outer side surface, into which shoulder a seal is inserted, which contacts the outer concave bearing part and has, for example, a V-shaped cutout extending around the outer circumference. The seal optionally also contacts the load-bearing connection part in addition to the lower housing part and the outer concave bearing part, i.e., the upper housing part, and the sealing effect of the seal is maintained even in the case of significant pivoting movements of the connection part, also about a horizontal pivot axis. Despite the simple design of the seal, it provides the desired sealing function under all conditions of proper operation.

[0012] The lower housing part connected to the load-bearing connection part has an inner side surface which is concentric with the outer side surface in a preferred embodiment, into which the inner concave bearing part is inserted. The inner concave bearing part can be supported on an inner shoulder which closes the inner side surface upwards.

[0013] According to the invention, the connection between the housing part and the associated connecting part is established by screwing, which is a load-bearing connecting part in the case of the lower housing part and a semi-hook connecting part in the case of the upper housing part. As a result, a quick and simple replacement of the articulated bearing arrangement is possible.

[0014] The upper housing part connected to the semi-hook type connecting part by the second screw connection is formed in one piece with the bolt pointing downward. The bolt is connected to the housing plate of the upper housing part which is used as a cover when viewed from above.

[0015] The upper housing part can be designed in a partially conical manner and can be inserted into a correspondingly shaped receptacle of the semi-hook connection. In a particularly space-saving design, the conical wall region of the upper housing part overlaps in the radial direction with the further sliding surface of the outer concave bearing part, which is also formed by the upper housing part. The radial direction here refers to the vertically oriented center axis of the articulated bearing arrangement. Overlap in the radial direction is synonymous with the presence of at least one imaginary cylinder concentric to the center axis, the cylinder side of which intersects not only the conical wall region but also the concave further sliding surface.

[0016] In contrast to the upper housing part, which is preferably closed at the top by the aforementioned housing plate, the lower housing part has a central opening or hole in a preferred design which does not have to be covered. The bolt connected in one piece to the upper housing part is visible from below through the opening. The downward orientation of the bolt and the shaping and orientation of the other bearing components prevent water from accumulating during operation of the rail vehicle. This also prevents the accumulation of dirt.

[0017] All four concave or convexly curved bearing parts have sliding surfaces which can be formed by any, in principle known sliding bearing material. Here, the sliding lining can be glued in a known manner to the basic body provided by the lower housing part or the upper housing part in the case of the main bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a detailed description of an embodiment of the present invention based on the accompanying drawings. It is shown here:

[0019] Figure 1 A cross-sectional view showing an articulated bearing arrangement,

[0020] Figure 2 A perspective view of an articulated bearing arrangement is shown. DETAILED DESCRIPTION

[0021] The articulated bearing arrangement, which is designated as a whole by the reference numeral 1, is provided for use in a rail vehicle. With regard to the basic function of the articulated bearing arrangement 1, reference is made to the prior art described in detail at the outset.

[0022] The articulated bearing assembly 1 comprises a load-bearing connecting part 2 and a semi-tie connecting part 3 , wherein the connecting plates 4 , 5 of the connecting parts 2 , 3 are oriented vertically in the installed state of the articulated bearing assembly 1 and are fixedly connected to the rail vehicle.

[0023] Each connecting element 2 , 3 has a substantially horizontally oriented plate section 7 , 8 .

[0024] In the plate section 7 of the load-bearing connecting element 2 there is a hole 10, and in the plate section 8 of the connecting element 3 located therebelow there is a hole 11. The bearing assembly, designated as a whole by 12, which is also referred to in a narrow sense as an articulated bearing, is accommodated in the holes 10, 11.

[0025] The bearing assembly 12 comprises a main bearing 13 as an outer bearing and a captive bearing 14 as a smaller inner bearing. An outer male bearing part 15 and an outer female bearing part 16 are components of the main bearing 13. Here, the outer male bearing part 15 is simultaneously a lower housing part of the main bearing 13 and the outer female bearing part 16 is simultaneously an upper housing part of the main bearing 13. Accordingly, the sliding surfaces 17, 18 are provided by the lower housing part 15 or the upper housing part 16.

[0026] In the load-bearing connecting part 2, more precisely in the plate section 7, there is a receptacle 19 which concentrically surrounds the hole 10 and into which the lower housing part 15 is inserted. The axis of symmetry of the receptacle 19 is identical to the vertically oriented center axis of the articulated bearing arrangement 1, which is designated by M. The outer cylindrical side surface of the lower housing part 15, which is held by the receptacle 19, is designated by 20. A shoulder 21 is formed between the sliding surface 17 of the outer convex bearing part 15 and the side surface 20, in which a seal 23 is placed. The seal 23 has a V-shaped cutout 24 on its outer circumferential surface and contacts a total of three components, namely the housing parts 15, 16 and the load-bearing connecting part 2. In order to fasten the lower housing part 15 in the plate section 7 of the load-bearing connecting part 2, screws 22 are provided, which extend into the receptacle 19 and are arranged concentrically around the hole 10.

[0027] In contrast to the lower housing part 15, the upper housing part 16 has a closed housing plate 25. The housing plate 25 is inserted into a receptacle 26 of the semi-hook attachment 3 and fastened there by means of screws 29. The upper housing part 16 is partially conically shaped corresponding to the conical wall 27 of the housing plate 25. The upper housing part 16 also has a cylindrical section 28, which is likewise inserted into the receptacle 26.

[0028] Starting from the housing plate 25, a bolt 30 is oriented vertically downward. The bolt 30 is concentrically surrounded by an inner side 31 of the lower housing part 15. An inner male bearing part 32 of the inner bearing 14 is seated on the bolt 30 and fixed by means of a nut 33. The inner male bearing part 32 is in contact with an inner female bearing part 34, which is inserted into the inner side 31 and stops on an inner shoulder 35 of the outer male bearing part 15.

[0029] Description of Reference Numerals

[0030] 1 Articulated bearing device 2 Load-bearing connection 3 Semi-hook connection 4-5-6-7 Plate section of load-bearing connection 8 Plate section of semi-hook connection 9-10 Holes in plate section of load-bearing connection 11 Holes in plate section of semi-hook connection 12 Bearing assembly 13 Main bearing, external bearing 14 Anti-slip bearing, internal bearing 15 External convex bearing part, lower housing part of main bearing 16 External concave bearing part, upper housing part of main bearing 17 External convex bearing Sliding surface of the part 18, another sliding surface of the external concave bearing part 19, the accommodating part of the load-bearing connecting part 20, the external side surface of the lower shell part 21, the shoulder 22, the screw 23, the seal 24, the V-shaped cutout 25, the shell plate 26, the accommodating part of the semi-hanging connecting part 27, the conical wall portion of the shell plate 28, the cylindrical section of the upper shell part 29, the screw 30, the bolt 31, the internal side surface of the lower shell part 32, the internal convex bearing part 33, the nut 34, the internal concave bearing part 35, the internal shoulder M center axis.

Claims

1. An articulated bearing device (1) for articulating a carriage of a rail vehicle, the articulated bearing device comprising two concentrically staggered articulated bearings (13, 14), namely a main bearing (13) as an outer bearing and an anti-slip bearing (14) as an inner bearing, wherein the main bearing (13) comprises an outer convex bearing member (15) connected to a load-bearing connection member (2) and an outer concave bearing member (16) connected to a semi-hook connection member (3), and wherein the anti-slip bearing (14) comprises: an inner convex bearing member (32) fixedly connected to the semi-hook connector (3) via a bolt (30); and an inner concave bearing member (34) fixedly connected to the load-bearing connector (2), It is characterized in that The outer convex bearing part (15) has a spherically curved sliding surface one (17) and is configured as a one-piece lower housing part of the main bearing (13), and the lower housing part is directly connected to the load-bearing connecting part (2) by means of a first screw connection, and the outer concave bearing part (16) has a sliding surface two (18) and is configured as a one-piece upper housing part of the main bearing (13), and the upper housing part is directly connected to the semi-hanging connecting part (3) by means of a second screw connection and further comprises a bolt (30), and the bolt (30) is connected to the upper housing part The lower housing part is constructed in one piece, and the lower housing part connected to the load-bearing connecting part (2) has an outer side surface (20) inserted into a receiving part (19) of the load-bearing connecting part (2), and the outer side surface extends beyond the spherically curved sliding surface (17) of the outer convex bearing part (15) in the radial direction. A shoulder (21) is formed between the outer side surface (20) and the spherically curved sliding surface (17) of the outer convex bearing part (15), and a sealing part (23) in contact with the outer concave bearing part (16) is inserted into the shoulder.

2. The articulated bearing device (1) according to claim 1, characterized in that The sealing member (23) has an annularly circumferential V-shaped cutout (24) on its outer circumferential surface.

3. The articulated bearing device (1) according to claim 1 or 2, characterized in that: The seal (23) is additionally in contact with the load-bearing connection (2).

4. The articulated bearing device (1) according to claim 1 or 2, characterized in that: The lower housing part connected to the load-bearing connecting part (2) has an inner side surface (31) concentric with the outer side surface (20), and the inner concave bearing part (34) is inserted into the inner side surface.

5. The articulated bearing device (1) according to claim 1 or 2, characterized in that: The upper housing part is partially conically designed and is inserted into a correspondingly shaped receptacle 2 (26) of the semi-hook connecting part (3).

6. The articulated bearing device (1) according to claim 5, characterized in that The conical wall region of the upper housing part overlaps in the radial direction with a second sliding surface (18) of the outer concave bearing part (16) which is also formed by the upper housing part.

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