JP7419524B2 - car body joints - Google Patents

Description

The present invention relates to a spherical plain bearing assembly for articulating the body of a rail vehicle, constructed according to the preamble of claim 1.

A spherical plain bearing assembly of the above type is known from EP 0 559 635 B1. The spherical plain bearing assembly connects a bearing bottom with a mounting bottom, each bottom, or connecting portion, including a plurality of plates. In this case, the upper plate is in each case firmly connected via a bracket to the lower bearing plate, the bottom bearing plates being arranged at the same height. The same applies to the plate placed on the upper side.

Both bottom parts of the spherical plain bearing assembly according to EP 0 559 635 B1 are installed in a series of rail vehicles. The mounting bottom is connected to the bearing bottom using two concentric spherical joints facing each other. In the bearing plate of the bearing bottom there is a circular opening to which a cylindrical housing is welded. This housing supports a ring-shaped convex spherical carrot, which is a component of both spherical joints, i.e. the lateral joints. The concave component associated with the articulation is incorporated in a ring-shaped housing, which is fixed by welding to the circular opening of the extension arm of the resting base. A downwardly directed journal is fixed by welding to the horizontal bottom surface of the above-mentioned ring-shaped housing, to which the convex component of the second inner spherical joint is fixed. The inner spherical joint is sealed by a cover plate, which is incorporated into the central opening of the cylindrical housing connected to the bearing base.

A further articulation of the vehicle body is disclosed in EP 1925527B1. In this case, the joint is designed as a radial spherical plain bearing with an inner ring with a convexly curved spherical bearing surface and an outer ring with a concavely curved spherical bearing surface. In this case, the contacting sections of the bearing surfaces of the inner and outer rings differ in size in the direction of the vertical bearing axis extending from the center of the inner ring. The outer ring may be a segmented bearing ring.

DE 10 2005 056 983 A1 describes a method for extending the life of spherical plain bearings that performs pivoting and tilting movements with small amplitudes under large unilateral loads. Within this method, a localized sealing zone is determined in the assembled bearing using a sensor system. The bearing is then disassembled, rotated so that the sealing area is no longer located in the load zone of the bearing, and reassembled.

European Patent No. 1983202B1 discloses a coupling thrust bearing for use in a coupling between a vehicle and a bogie of a rail vehicle, in which the outer housing has a horizontally aligned base; Extending side walls and a central shaft. A spherical plain bearing part, shown as an outer ball, is arranged on or at least partially within the outer housing. Furthermore, there is a so-called inner ball, which is mounted on the central shaft, ie screwed onto the central shaft. The outer ball is between the inner ball and the outer housing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spherical plain bearing assembly for a rail vehicle which is further developed over the above-mentioned prior art, and which has an easy-to-manufacture structure and low wear properties at the same time. , is characterized by a particularly favorable balance between the required installation space and mechanical load capacity.

This problem is solved according to the invention by a spherical plain bearing assembly having the features of claim 1 . In a basic concept known per se, a spherical plain bearing assembly provided for articulating the body of a rail vehicle consists of two spherical plain bearings arranged concentrically one on top of the other, namely the main bearing as the outer bearing and the inner The main bearing includes an anti-lifting bearing as a bearing, and the main bearing includes an outer convex bearing portion connected to the bearing connection portion and an outer concave bearing portion connected to the mounting connection portion. Anti-lifting bearings, whose name is chosen independently of whether a spherical plain bearing assembly is actually required to be secured against lifting during operation, are internally connected rigidly to the resting connection via a journal. It includes a convex bearing portion and an inner concave bearing portion fixedly connected to the bearing connection portion.

According to the invention, the outer convex bearing part has a spherically curved sliding surface and is connected directly to the bearing connection part by means of a first threaded connection, an integral lower housing part of the main bearing. an integral upper housing of the main bearing, the outer concave bearing part having a further sliding surface and being directly connected to the mounting connection part by means of a second threaded connection and further comprising a journal; formed as a part. The overall spherical plain bearing assembly therefore has a particularly compact construction with a reduced number of parts. This simultaneously reduces the time required for the initial assembly of the spherical plain bearing assembly and the personnel required to do so.

According to a possible configuration, the lower housing part, which is fixedly connected to the bearing connection part, has an outer circumferential side integrated into the receptacle of the bearing connection part, the outer circumferential side being radially outwardly convex. It is located on the outside of the spherically curved sliding surface of the bearing part.

In this case, a step is formed between the outer peripheral side surface of the outer convex bearing portion and the spherically curved sliding surface, and a sealing material that contacts the outer concave bearing portion is incorporated in the step. The sealing material has, for example, a V-shaped cut portion surrounding it in a ring shape on its outer peripheral surface. This sealing material maintains its sealing effect even during significant swivel movements of the connecting part and also during swiveling movements about the horizontal swivel axis, and furthermore, the lower housing part has an outer concave bearing part, i.e. the upper housing. and optionally also the bearing connection part. Therefore, despite the simple structure of this seal, it provides the desired sealing function under all conditions of proper operation.

In a preferred embodiment, the lower housing part connected to the bearing connection part has an inner circumferential side concentric to the outer circumferential side, in which the inner concave bearing part is integrated. In this case, the inner concave bearing part can be supported on a step which partitions the inner circumferential side at the top.

According to the invention, the connection between the housing part and the associated connection part, in this case the bearing connection part of the lower housing part and in this case the resting connection part of the upper housing part, is provided by a threaded connection. Established. Thereby, quick and easy replacement of the spherical plain bearing assembly is possible.

In that case, the upper housing part, which is connected to the mounting connection part by a second threaded connection, is formed in one piece with a downwardly directed journal. In this case, the journal connects to a housing plate of the upper housing part, which acts as a cover when viewed from above.

In this case, the upper housing part has a partially conical design and is integrated into a correspondingly shaped receptacle of the mounting connection part. In a particularly space-saving design, the conical wall area of the upper housing part overlaps radially with a further sliding surface of the outer concave bearing part, which is also formed by the upper housing part. In this case, radial direction refers to the vertically aligned central axis of the spherical plain bearing assembly. A radial overlap is defined as at least a virtual cylinder concentric to the central axis, the circumferential side of which intersects both the conical wall area and the further concave sliding surface. It has the same meaning as .

Unlike the upper housing part, which is preferably closed at the top by the above-mentioned housing plate, the lower housing part has a central opening or hole which, in the preferred construction, does not necessarily have to be covered. Through this opening, the journal, which is integrally connected to the upper housing part, is visible from below. Water accumulation during operation of the rail vehicle is avoided by aligning the journal downwards and by forming and aligning further bearing components. Therefore, dirt accumulation is also prevented.

A total of four convexly or concavely curved bearing parts have sliding surfaces, which can be formed by any sliding bearing material known in principle. In this case, the sliding lining is applied in a manner known per se on the basic body provided by the lower or upper housing part in the case of a main bearing.

Embodiments of the invention will be explained in more detail below with reference to the drawings.

FIG. 2 is a cross-sectional view of a spherical plain bearing assembly. FIG. 2 is a perspective view of a spherical plain bearing assembly.

The entire spherical plain bearing assembly, designated with the reference numeral 1, is provided for use in a rail vehicle. From the point of view of the functional principle of the spherical plain bearing assembly 1, reference is made to the prior art cited at the beginning.

The spherical plain bearing assembly 1 comprises a bearing connection part 2 and a mounting connection part 3, the connection plates 4, 5 of the connection parts 2, 3 being vertically aligned in the assembled state of the spherical plain bearing assembly 1, Fixedly connected to the vehicle.

Each connecting part 2, 3 has a substantially horizontally aligned plate section 7, 8.

In the plate section 7 of the bearing connection part 2 there is a hole 10, and in the plate section 8 of the connection part 3 placed above the plate section 7 there is a hole 11. The bores 10, 11 accommodate a bearing assembly, generally designated 12, also referred to in the narrow sense as a spherical plain bearing assembly.

The bearing assembly 12 comprises a main bearing 13 as an outer bearing and an anti-lifting bearing 14 as a smaller inner bearing. The outer convex bearing portion 15 and the outer concave bearing portion 16 are components of the main bearing 13. In this case, the outer convex bearing part 15 is at the same time the lower housing part of the main bearing 13 and the outer concave bearing part 16 is at the same time the upper housing part of the main bearing 13. Accordingly, the sliding surface 17 is provided by the lower housing part 15 and the sliding surface 18 by the upper housing part 16.

In the bearing connection part 2, or more precisely in the plate section 7, there is a recess 19 concentrically surrounding the bore 10, into which the lower housing part 15 is integrated. The axis of symmetry of the housing 19 is labeled M and is the same as the vertically aligned central axis of the spherical plain bearing assembly 1. The outer cylindrical circumferential side of the lower housing part 15, which is retained by the receptacle 19, is labeled 20. A step 21 is formed between the peripheral side surface 20 of the outer convex bearing portion 15 and the sliding surface 17, in which a sealing material 23 is enclosed. The sealing material 23 has a V-shaped cutout 24 on its outer circumferential surface and contacts three parts in total, namely the housing parts 15 , 16 and the bearing connection part 2 . For fixing the lower housing part 15 with the plate section 7 of the bearing connection part 2, a screw 22 is provided, which projects into the receptacle 19 and is arranged concentrically around the bore 10.

Upper housing part 16 , unlike lower housing part 15 , has a closed housing plate 25 . The housing plate 25 is assembled in the housing part 26 of the mounting connection part 3 and is fixed in the housing part 26 with screws 29. Corresponding to the conical wall 27 of the housing plate 25, the upper housing part 16 is also partially conically shaped. Furthermore, the upper housing part 16 has a cylindrical section 28 which is likewise integrated into the receptacle 26 .

Extending from housing plate 25 is a journal 30 that is oriented vertically downwardly. The journal 30 is concentrically surrounded by the inner circumferential side 31 of the lower housing part 15. On the journal 30, the inner convex bearing part 32 of the inner bearing 14 is mounted and fixed using a nut 33. The inner convex bearing part 32 is in contact with an inner concave bearing part 34 which is integrated into the inner circumferential side 31 and abuts a step 35 of the outer convex bearing part 15 .

1 Spherical plain bearing assembly 2 Support connection part 3 Mounting connection part 4 -
5 -
6 -
7 Plate classification of bearing connection part 8 Plate classification of mounting connection part 9 -
10 Hole in the plate section of the bearing connection part 11 Hole in the plate section of the mounting connection part 12 Bearing assembly 13 Main bearing, outer bearing 14 Anti-lifting bearing, inner bearing 15 Outer convex bearing part, lower housing of the main bearing Parts 16 Outer concave bearing part, upper housing part of the main bearing 17 Sliding surface of the outer convex bearing part 18 Further sliding surface of the outer concave bearing part 19 Receiving part of the bearing connection part 20 Outer circumferential side of the lower housing part 21 Step part 22 Screw 23 Sealing material 24 V-shaped cutting 25 Housing plate 26 Receptacle for the mounting connection part 27 Conical wall of the housing plate 28 Cylindrical section of the upper housing part 29 Screw 30 Journal 31 Inner circumferential side of the lower housing part 32 Inside Convex bearing portion 33 Nut 34 Inner concave bearing portion 35 Inner stepped portion M Center shaft

Claims (7)

A spherical plain bearing assembly (1) for articulating the body of a rail vehicle, comprising two spherical plain bearings (13, 14) arranged concentrically one on top of the other, i.e. the main bearing (13) as outer bearing. and an anti-lifting bearing (14) as an inner bearing, the main bearing (13) having an outer convex bearing portion (15) connected to the bearing connection portion (2), and a mounting connection portion (3). an outer concave bearing portion (16) connected thereto, said anti-lift bearing (14) having an inner convex bearing portion (16) fixedly connected to said hanging connection portion (3) via a journal (30). In a spherical plain bearing assembly (1) comprising a bearing part (32) and an inner concave bearing part (34) fixedly connected to said bearing connection part (2),
The outer convex bearing part (15) has a spherically curved sliding surface (17) and is directly connected to the bearing connection part (2) by means of a first threaded connection to the main bearing. (13) is formed as an integral lower housing part (15), said outer concave bearing part (16) having a further sliding surface (18) and using a second threaded connection as described above. is formed as an integral upper housing part (16) of the main bearing (13), which is directly connected to the hanging connection part (3) and further includes the journal (30);
The integral lower housing part (15) connected to the bearing connection part (2) has an outer circumferential side (20) integrated into the receptacle (19) of the bearing connection part (2), Spherical plain bearing assembly (1), characterized in that the outer circumferential side surface (20) is radially external to the spherically curved sliding surface (17) of the outer convex bearing part (15) . A step (21) is formed between the outer peripheral side surface (20) of the outer convex bearing portion (15) and the spherically curved sliding surface (17), and the step (21) 2. Spherical plain bearing assembly (1) according to claim 1 , characterized in that ) incorporates a sealing material (23) in contact with the outer concave bearing portion (16). Spherical plain bearing assembly (1) according to claim 2 , characterized in that the sealing material (23) has a ring-shaped surrounding V-shaped cutout (24) on its outer circumferential surface. Spherical plain bearing assembly (1) according to claim 2 or 3 , characterized in that the sealing material (23) further contacts the bearing connection part (2). The integral lower housing part (15) connected to the bearing connection part (2) has an inner circumferential side surface (31) concentric to the outer circumferential side surface (20); Spherical plain bearing assembly (1) according to any one of claims 2 to 4 , characterized in that the inner concave bearing part (34) is incorporated in the inner concave bearing part (34). It is noted that said integral upper housing part (16) is of partially conical design and is integrated into a correspondingly shaped receptacle (26) of said hanging connection part (3). Spherical plain bearing assembly (1) according to any one of claims 1 to 5 , characterized in that: The conical wall area of the integral upper housing part (16) is in radial contact with the sliding surface (18) of the outer concave bearing part (16), which is also formed by the integral upper housing part (16). Spherical plain bearing assembly (1) according to claim 6 , characterized in that the spherical plain bearing assembly (1) overlaps with each other.

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