Shock absorber mounting seat, bogie and railway vehicle

Abstract

The embodiment of the invention provides a shock absorber mounting seat, a bogie and a railway vehicle, and the shock absorber mounting seat comprises a mounting main body, the mounting main body is used for being fixed to a bogie side beam; the mounting main body is provided with a first side surface and a second side surface which are opposite; the vertical shock absorber interface is arranged on the second side surface of the mounting main body; the anti-snaking shock absorber connector is arranged on the second side face of the installation body, and the anti-snaking shock absorber connector and the vertical shock absorber connector are sequentially arranged in the width direction of the installation body. According to the shock absorber mounting seat provided by the embodiment of the invention, the vertical shock absorber and the anti-snaking shock absorber are integrated together, so that the number of mounting seats arranged on a side beam can be reduced, the structure of the side beam is simplified, and mounting procedures are reduced; and the operation space is large, the operation convenience is improved, installation and maintenance are more convenient, and therefore the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to rail vehicle structural technology, and in particular to a shock absorber mounting seat, a bogie, and a rail vehicle. Background Art

[0002] The bogie, the running gear of a rail vehicle, is one of the most critical components of a metro vehicle, directly determining the safety and comfort of its operation. High-speed, heavy-load operation, in particular, places increasingly stringent performance demands on rail vehicles, particularly bogies. The frame, as the bogie's backbone, is its core component, connecting various functional components and transmitting and bearing loads.

[0003] Snake motion is an inherent feature of railway rolling stock. If controlled within a certain range, this motion can guide the movement of the rolling stock. However, if this motion becomes uncontrolled, it can cause severe vibrations in the bogie and body of the rolling stock, seriously affecting ride comfort and safety. Therefore, snake motion must be controlled. Low-speed rolling stock generally relies on the friction of secondary side bearings to suppress snake motion. High-speed rolling stock generally requires the installation of anti-snaking dampers. If one set of anti-snaking dampers is insufficient, two sets or vertical dampers may be required.

[0004] Currently, the anti-snaking mounting seat and the vertical shock absorber seat are both split structures, which are installed on the side beam through separate mounting seats. As a result, the side beam occupies a large space, is difficult to assemble and weld, has poor installation convenience, high manufacturing cost, and is difficult to guarantee installation tolerances. Summary of the Invention

[0005] In order to solve one of the above-mentioned technical defects, an embodiment of the present application provides a shock absorber mounting seat, a bogie and a rail vehicle.

[0006] According to a first aspect of an embodiment of the present application, a shock absorber mounting base is provided, comprising:

[0007] Mounting body; the mounting body is used to be fixed to the bogie side beam; the mounting body has a first side surface and a second side surface opposite to each other, the first side surface being in contact with the side beam;

[0008] A vertical vibration damper interface is provided on the second side surface of the mounting body;

[0009] The anti-snaking damper interface is arranged on the second side surface of the installation body and is arranged in sequence with the vertical damper interface along the width direction of the installation body.

[0010] According to a second aspect of an embodiment of the present application, a bogie is provided, comprising: a side beam and the shock absorber mounting seat as described above; the shock absorber mounting seat is fixed to the outer side of the middle portion of the side beam.

[0011] According to a third aspect of an embodiment of the present application, there is provided a rail vehicle comprising: the bogie as described above.

[0012] The technical solution provided in the embodiment of the present application is that the shock absorber mounting seat adopts a mounting body for fixing to the bogie side beam; the mounting body has a first side surface and a second side surface relative to each other, and the first side surface is in contact with the side beam; the vertical shock absorber interface and the anti-snaking shock absorber interface are both arranged on the second side surface of the mounting body; the two are arranged in sequence along the width direction of the mounting body, on the one hand, it can reduce the number of mounting seats provided on the side beam, thereby simplifying the side beam structure and reducing the installation process; on the other hand, it also has a larger operating space, improves the convenience of operation, and is more convenient for installation and maintenance, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 A schematic diagram of a bogie provided in an embodiment of the present application from a top view;

[0015] Figure 2 A schematic diagram of a bogie provided in an embodiment of the present application from an upward angle;

[0016] Figure 3 A schematic structural diagram of a shock absorber mounting base provided in an embodiment of the present application;

[0017] Figure 4 A schematic diagram of the structure of the shock absorber mounting base connected to the vertical shock absorber provided in an embodiment of the present application;

[0018] Figure 5 A schematic diagram of the structure of the shock absorber mounting base and the vertical shock absorber provided in an embodiment of the present application connected at another angle;

[0019] Figure 6 A cross-sectional view of the shock absorber mounting base provided in an embodiment of the present application at the vertical shock absorber interface;

[0020] Figure 7 A schematic structural diagram of a brake hanger in a bogie provided in an embodiment of the present application.

[0021] Reference numerals:

[0022] 1- side beam; 2- cross beam; 3- shock absorber mounting seat;

[0023] 31 - Mounting body; 311 - First overlap; 312 - Second overlap; 32 - Vertical shock absorber interface; 321 - Mounting column; 322 - Internally threaded hole; 3221 - Conical hole; 3222 - Cylindrical hole; 323 - Support rib; 324 - Limiting boss; 33 - Anti-snaking shock absorber interface; 331 - Mounting block; 332 - Mounting hole; 333 - Second limiting plane; 334 - Secondary measurement reference seat;

[0024] 4-Vertical shock absorber;

[0025] 5-wheel brake hanger;

[0026] 6-disc brake hanger; 61-hanger fixing part; 611-hanger connecting piece; 612-welding part; 613-connecting plate; 62-hanger connecting part; 63-hanger mounting part; 631-brake connecting part. DETAILED DESCRIPTION

[0027] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0028] This embodiment provides a shock absorber mounting base for mounting on a side beam of a bogie, and integrally connecting a vertical shock absorber and an anti-snaking shock absorber to the mounting base. The bogie is a bogie of a rail vehicle and can be a powered bogie or a non-powered bogie.

[0029] Figure 1 and Figure 2 Only the bogie frame and the components installed on the frame are shown. Figure 1 and Figure 2 As shown, the bogie frame provided in this embodiment includes: a side beam 1 and a cross beam 2. The two side beams 1 are arranged parallel and side by side, and the cross beam 2 is connected between the two side beams 1. The side beam 1 can be a box-shaped structure formed by welding an upper cover plate, a lower cover plate, an inner vertical plate, and an outer vertical plate.

[0030] The shock absorber mounting bracket 3 is attached to the outer side surface of the middle portion of the side sill 1. The vertical shock absorber is also located on the outer side of the side sill 1 and extends vertically. One end of the vertical shock absorber is connected to the shock absorber mounting bracket 3, and the other end is connected to the vehicle body. The anti-snaking shock absorber is located on the outer side of the side sill 1 and extends longitudinally. One end of the anti-snaking shock absorber is connected to the shock absorber mounting bracket 3, and the other end is connected to the vehicle body.

[0031] In this embodiment, the length direction of the side beam of the bogie is called the longitudinal direction, the width direction of the side beam is called the transverse direction, and the height direction of the side beam is called the vertical direction or the upright direction.

[0032] like Figure 3 As shown, the shock absorber mount 3 provided in this embodiment includes a mounting body 31, a vertical shock absorber interface 32, and an anti-snaking shock absorber interface 33. The mounting body 31 is a thin plate-like structure having a first side surface and a second side surface facing each other. The first side surface is fixed to the side beam 1 in contact with the first side surface. From the perspective of the shock absorber mount 3 being mounted on the side beam 1, the width of the shock absorber mount 3 is longitudinal, and the height is vertical.

[0033] The vertical vibration damper interface 32 and the anti-snaking vibration damper interface 33 are both provided on the second side surface of the mounting body 31. The anti-snaking vibration damper interface 33 and the vertical vibration damper interface 32 are sequentially arranged along the width direction of the mounting body 31.

[0034] The vertical damper interface 32 and the anti-snaking damper interface 33 are pre-set on the mounting body 31 and are mounted on the side beam as a finished product together with the mounting body 31 , for example, welded to the side beam.

[0035] Conventional solutions include installing the shock absorber interface on the outer panel of the side member 1 or on the lower cover of the side member 1. The solution of installing the shock absorber interface on the lower cover of the side member 1 has extremely limited operating space below the side member, making operation less convenient and requiring specialized tools that can adapt to small operating spaces.

[0036] In this embodiment, the vertical shock absorber interface 32 and the anti-snaking shock absorber interface 33 are both arranged on the second side surface of the installation body 31, that is, the outside of the side beam 1. Therefore, there is a larger installation space, and the operator can easily operate on the outside of the side beam. Moreover, the tools used are not restricted by space, which can improve convenience and efficiency.

[0037] The technical solution provided in this embodiment is that the shock absorber mounting seat adopts a mounting body for fixing to the bogie side beam; the mounting body has a first side surface and a second side surface relative to each other, and the first side surface is in contact with the side beam; the vertical shock absorber interface and the anti-snaking shock absorber interface are both arranged on the second side surface of the mounting body; the two are arranged in sequence along the width direction of the mounting body, on the one hand, it can reduce the number of mounting seats provided on the side beam, thereby simplifying the side beam structure and reducing the installation process; on the other hand, it also has a larger operating space, improves the convenience of operation, is more convenient for installation and maintenance, and thus improves work efficiency.

[0038] Based on the above technical solution, the vertical damper interface 32 and the anti-snaking damper interface 33 are integrally formed with the mounting body 31, for example, through a forging process. This provides high strength, simple manufacturing, minimal steps, and low cost. If manufactured from aluminum alloy, this can also achieve a lightweight effect, reducing the bogie's deadweight, thereby improving traction efficiency and facilitating production and transportation.

[0039] On the basis of the above technical solution, Figure 3 、 Figure 4 and Figure 5 As shown, the vertical vibration absorber interface 32 includes a mounting post 321 , one end of the mounting post 321 is fixed to the second side surface of the mounting body 31 , and the other end is provided with an internal threaded hole 322 .

[0040] The bottom end of the vertical vibration damper 4 is provided with an annular connecting sleeve, which is provided with an elastic node, which is bolted to the internal threaded hole 322. The elastic node is a structure formed by vulcanizing an outer metal ring, a middle rubber ring, and an inner metal ring, and the outer metal ring is fixedly connected to the connecting sleeve.

[0041] Traditional vertical dampers 4 are connected to the side sills at two connection points, but this embodiment uses a single-point connection, which provides a higher degree of freedom and allows the vertical damper 4 to swing slightly around the mounting point. This allows it to better adapt to changes in the relative displacement between the vehicle body and bogie, improving curve handling performance. Furthermore, the single-point connection can significantly reduce costs.

[0042] Furthermore, the vertical damper 4 features a single, flexible connection, allowing the damping effect to be more directly transmitted to the side sill or vehicle body, making it suitable for applications where vertical vibration suppression is less demanding. Furthermore, the reduced number of connection points reduces potential points of failure, improving long-term stability and reliability.

[0043] Furthermore, the mounting post 321 is truncated in shape, and the bottom surface with a larger diameter is fixed to the mounting body 31 , which can improve stability.

[0044] Furthermore, support ribs 323 are provided on both sides of the mounting column 321, and the support ribs 323 are respectively fixed to the outer surface of the mounting column 321 and the second side surface of the mounting body 31, so as to improve the installation strength and firmness of the mounting column 321, thereby improving the reliability of the vertical shock absorber installation.

[0045] A limiting boss 324 is also provided on the first side of the mounting body 31. A long bolt is threaded through the elastic node of the vertical vibration damper 4 and the mounting post 321, then connected to the nut. A first limiting surface is provided on the side of the limiting boss 324 facing the nut. This surface abuts against one of the nut's circumferential surfaces, thereby limiting the nut's rotation and preventing it from loosening.

[0046] Further, such as Figure 6 As shown, the internal threaded hole 322 includes a conical hole 3221 and a cylindrical hole 3222. The center lines of the conical hole 3221 and the cylindrical hole 3222 are collinear. The cross-sectional area of ​​the conical hole 3221 gradually decreases from the second side surface toward the first side surface. The small diameter end of the conical hole 3221 is connected to the cylindrical hole 3222, and the diameter of the small diameter end of the conical hole 3221 is larger than the diameter of the cylindrical hole 3222.

[0047] A connector with external threads on its end is used, with one conical section and the other cylindrical. The connector is inserted into the internally threaded hole 322 from the second side, and the end protruding from the first side is tightened with a nut. The portion of the connector located within the conical hole 3221 forms an interference fit with the inner wall of the conical hole 3221, automatically compensating for initial eccentricity between the connector and the conical hole 3221, ensuring alignment of their axes and preventing vibration or localized stress concentration caused by misalignment.

[0048] Furthermore, by adjusting the axial press-in of the connector (e.g., tightening the nut or hydraulically advancing it to ensure proper contact between the mounting surfaces), the interference fit can be precisely controlled to accommodate varying operating conditions (e.g., frequent disassembly for light loads or high tightening forces for heavy loads). The large contact area of ​​the conical surface fit and the even distribution of radial pressure generated by the interference fit allow it to withstand higher torques, axial forces, and combined loads (particularly suitable for high-speed rotating components).

[0049] The above solution makes the vertical shock absorber easy to disassemble and reuse. The mating surfaces can be separated by reverse axial force (such as hydraulic ejection or removal of nuts), avoiding the problem of traditional cylindrical interference fit that often requires heating or violent disassembly, which can easily damage the surface and cause damage to parts.

[0050] like Figure 3 As shown, for the anti-snaking shock absorber interface 33, this embodiment also provides an implementation method: the anti-snaking shock absorber interface 33 includes: two installation blocks 331 arranged at intervals, one end of the installation block 331 is fixed to the second side surface of the installation body 31, and the other end is provided with a mounting hole 332.

[0051] Specifically, two mounting blocks 331 are arranged in sequence along the height direction of the mounting body 31, and the centerline of the mounting hole 332 is aligned with the width direction of the mounting body 31. The anti-snaking damper is approximately longitudinally oriented, with an elastic node at one end. Two bolts pass through the elastic node and the mounting hole 332, respectively, and are then tightened with nuts.

[0052] Furthermore, a second limiting plane 333 is provided on the mounting block 331 . The second limiting plane 333 is parallel to the center line of the mounting hole 332 . The second limiting plane 333 is in close contact with one of the circumferences of the nut, thereby limiting the rotation of the nut and achieving an anti-loosening effect.

[0053] On the basis of the above technical solution, a secondary measurement reference seat 334 is provided on the upper surface of the mounting block 331 above. The top surface of the secondary measurement reference seat 334 is a plane and can be used as a reference for installing and adjusting the height of the secondary suspension device.

[0054] Traditional solutions usually place the secondary measurement reference seat at the outer end of the crossbeam extending from the side beam or on the side beam, and fix it by welding. This is more likely to cause welding deformation, resulting in inaccurate secondary measurement.

[0055] In the present application, the secondary measurement reference seat 334 is forged together with the mounting body 31 and mounted on the side beam as a forging, which completely overcomes the problem of welding deformation in the traditional solution, thereby achieving higher secondary measurement accuracy.

[0056] Based on the above technical solution, this embodiment further optimizes the mounting body 31: the top of the mounting body 31 is bent toward the first side surface to form a first overlapping portion 311, which overlaps the upper cover of the side beam 1. The bottom of the mounting body 31 is bent toward the first side surface to form a second overlapping portion 312, which overlaps the lower cover of the side beam 1.

[0057] The mounting body 31, the first overlap portion 311, and the second overlap portion 312 form a space that can accommodate the side beam 1. During the assembly process, the shock absorber mounting seat 3 is clamped on the outside of the side beam 1, which can achieve quick positioning and can be operated with one hand, which is convenient and fast. The first overlap portion 311 is then welded to the upper cover plate of the side beam, the second overlap portion 312 is welded to the lower cover plate of the side beam, and the mounting body 31 is welded and fixed to the outer plate of the side beam. The deformation generated during the welding process is only the deformation of the mounting body 31 itself, and will not affect the position accuracy of the shock absorber interfaces or the secondary measurement base seat.

[0058] Furthermore, the first overlap portion 311 and the mounting body 31 are transitioned through an arcuate surface, avoiding the edge between the side beam upper cover plate and the outer vertical plate, thus preventing damage to the side beam and providing space for welding deformation.

[0059] The second overlap portion 312 and the installation body 31 are transitioned through an arc surface, avoiding the edge between the side beam lower cover plate and the outer vertical plate, avoiding damage to the side beam, and also providing space for welding deformation.

[0060] Based on the above technical solutions, this embodiment further provides a bogie, comprising: a side beam 1 and a shock absorber mounting base 3 provided in any of the above contents, wherein the shock absorber mounting base 3 is fixed to the outer side of the middle portion of the side beam 1. Specific implementation methods can refer to the above contents.

[0061] Furthermore, the bogie adopts a combination of wheel disc brake and axle disc brake, such as Figure 1As shown, a disc brake hanger 5 is provided on the inner side of the side beam 1 for mounting a disc brake for directly applying braking force to the wheel.

[0062] An axle disc brake hanger 6 is provided on the crossbeam 2 for installing an axle disc brake for applying a braking force to the axle disc provided on the axle, thereby indirectly achieving braking.

[0063] Based on the above technical solution, this embodiment provides an implementation method of a shaft disc brake hanger 6. Figure 7 As shown, the disc brake hanger 6 includes a hanger fixing portion 61 , a hanger connecting portion 62 and a hanger mounting portion 63 .

[0064] The hanger fixing portion 61 includes two hanger connectors 611 for connecting to the crossbeam 2. The hanger connector 611 is a plate-like structure with one end bifurcated into two mutually perpendicular welded portions 612, which are welded to the upper cover and outer facade of the crossbeam 2, respectively. The other end has an arc-shaped notch. The two hanger connectors 611 are connected together by a connecting plate 613.

[0065] The mount connecting portion 62 is a cylindrical structure, embedded in the arc-shaped notch of the mount connector 611. The length direction of the mount connecting portion 62 is the same as the extending direction of the connecting plate 613, so that the mount connecting portion 62 is accommodated in the arc-shaped notches of the two mount connectors 611 at the same time.

[0066] One end of the hanger mounting portion 63 has an arc-shaped notch welded to the circumference of the hanger connection portion 62 facing away from the hanger fixing portion 61. There are two hanger mounting portions 63, symmetrically arranged around the circumference of the hanger connection portion 62. The other end of the hanger mounting portion 63 has a brake connection portion 631, which has a connection hole for connecting to the brake.

[0067] The above-mentioned hanger fixing part 61, hanger connecting part 62 and hanger installation part 63 are pre-fixed together by welding, and the shaft disc brake hanger 6 is installed on the beam 2 as a whole, avoiding the low efficiency problem caused by installing and machining holes one by one on the beam in the traditional solution.

[0068] This embodiment further provides a rail vehicle, comprising the bogie described above. The bogie and rail vehicle provided in this embodiment have the same technical effects as the shock absorber mounting seat described above.

[0069] This embodiment cleverly designs an integrated mounting seat for the anti-snaking shock absorber and the vertical shock absorber seat, which are used to install the anti-snaking shock absorber and the vertical shock absorber respectively. The integrated seat is dual-purpose, has a compact structure, occupies a small space, can effectively suppress the vehicle's snaking and rolling, and improve stability, thereby ensuring the safety and comfort of train operation.

[0070] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0073] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0074] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A shock absorber mounting seat, characterized in that: include: Install the main body; The mounting body is used to be fixed to the bogie side beam; the mounting body has a first side surface and a second side surface opposite to each other, and the first side surface is in contact with the side beam; A vertical vibration damper interface is provided on the second side surface of the mounting body; The anti-snaking damper interface is arranged on the second side surface of the installation body and is arranged in sequence with the vertical damper interface along the width direction of the installation body.

2. The shock absorber mounting base according to claim 1, characterized in that: The top of the installation body is bent toward the first side surface to form a first overlapping portion that overlaps with the upper cover plate of the side beam; the bottom of the installation body is bent toward the first side surface to form a second overlapping portion that overlaps with the lower cover plate of the side beam; the installation body, the first overlapping portion and the second overlapping portion enclose a space that can accommodate the side beam.

3. The shock absorber mounting seat according to claim 2, characterized in that: The first overlapping portion and the installation body are transitioned through an arc surface; the second overlapping portion and the installation body are transitioned through an arc surface.

4. The shock absorber mounting base according to claim 1, wherein: The vertical vibration damper interface includes a mounting column, one end of which is fixed to the second side surface of the mounting body, and the other end of which is provided with an internal threaded hole.

5. The shock absorber mounting base according to claim 4, characterized in that: Support ribs are respectively provided on both sides of the mounting post, and the support ribs are respectively fixed to the outer surface of the mounting post and the second side surface of the mounting body.

6. The shock absorber mounting base according to claim 1, characterized in that: The anti-snaking damper interface includes: two installation blocks arranged at intervals, one end of the installation block is fixed to the second side surface of the installation body, and the other end is provided with a mounting hole.

7. The shock absorber mounting base according to claim 6, characterized in that: The two mounting blocks are arranged in sequence along the height direction of the mounting body; the center line of the mounting hole is consistent with the width direction of the mounting body.

8. The shock absorber mounting base according to claim 7, characterized in that: A secondary measurement reference seat is provided on the upper surface of the mounting block located above.

9. A bogie, characterized in that: include: A side member and a shock absorber mounting seat according to any one of claims 1 to 8; The shock absorber mounting bracket is fixed to the outside of the middle part of the side member.

10. A rail vehicle, characterized in that: include: The bogie as claimed in claim 9.

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