Bogie frame, bogie and rail transit vehicle

Abstract

The utility model discloses a bogie frame, bogie and rail transit vehicle, the bogie frame comprises two side beams and a cross beam arranged between the two side beams, the cross beam and the two side beams form an H-shaped structure, each side beam comprises a side beam upper cover plate, a first end cover plate and a second end cover plate are respectively welded at two ends of the side beam upper cover plate, and the first end cover plate and the second end cover plate are connected with the cross beam. The side beam further comprises an integrated side beam lower cover plate, the side beam lower cover plate and the side beam upper cover plate are connected through a side beam inner vertical plate and a side beam outer vertical plate, a cap cylinder is welded to the first end cover plate, the side wall of the cap cylinder is welded to the side beam inner vertical plate and the side beam outer vertical plate, and the side wall of the cap cylinder is welded to the side beam inner vertical plate and the side beam outer vertical plate. The side beam lower cover plate is provided with a through hole, and the end of the through hole covers the periphery of the bottom end of the cap cylinder. According to the bogie frame, the structural strength is improved, the local stress is reduced, the stress concentration is reduced, the welding manufacturability is improved, and the running safety of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit equipment, in particular to a bogie frame, a bogie and a rail transit vehicle. Background Art

[0002] As the running gear of a rail vehicle, the bogie is one of the most core components of a rail vehicle. The various parameters of the bogie directly determine the stability and ride comfort of the vehicle.

[0003] The bogie frame is the skeleton of the bogie and plays the role of connecting various functional components and bearing and transmitting various forces. Therefore, the safe and reliable structural design of the bogie frame directly affects the driving safety of the passenger car and the life of the bogie.

[0004] For the existing B-type subway bogie frame, the bogie frame has more or less problems such as low strength and high local stress, which reduces the safety of the vehicle during operation. At the same time, there are many factors that affect the performance of the bogie. According to different performance requirements, different structural design requirements are combined, including the design of performance parameters, and different structural designs also have mutual influence. In view of this, it is necessary to continuously improve the bogie frame and continuously optimize the bogie frame structure to achieve the technical effect of improving structural strength, reducing local stress, and continuously improving vehicle operation safety. Utility Model Content

[0005] The utility model aims to provide a bogie frame, a bogie and a rail transit vehicle, which improve the structural strength, reduce the local stress, reduce the stress concentration, improve the welding processability, and improve the safety of vehicle operation.

[0006] To achieve the above-mentioned purpose, the utility model provides a bogie frame, comprising two side beams and a cross beam arranged between the two side beams, the cross beam and the two side beams are in an H-shaped structure, the side beam comprises a side beam upper cover plate, the two ends of the side beam upper cover plate are respectively welded with a first end cover plate and a second end cover plate, and the weld extends obliquely along the length direction of the side beam upper cover plate, a reinforcing rib plate is inserted on the surface of the side beam upper cover plate, the side beam also comprises an integrated side beam lower cover plate, the side beam lower cover plate and the side beam upper cover plate are connected by inner and outer vertical plates of the side beam, a cap barrel is welded on the first end cover plate, the side wall of the cap barrel is welded to the inner and outer vertical plates of the side beam, the side beam lower cover plate is provided with a through hole, and the end of the through hole covers the bottom end of the cap barrel.

[0007] Preferably, upper surfaces of the side beam upper cover plate, the first end cover plate and the second end cover plate are arranged flush.

[0008] Preferably, the lower surfaces of the first end cover plate and the second end cover plate are both provided with a protruding structure, the protruding structure is matched with the cap barrel, and the protruding structure is arranged on the inner side of the cap barrel.

[0009] Preferably, the reinforcing rib plate is arranged at a position close to the weld.

[0010] Preferably, the cross beam comprises two seamless steel pipes arranged in parallel, two longitudinal beams are arranged between the two seamless steel pipes, the two longitudinal beams are respectively located at two ends of the seamless steel pipe, and the two ends of the seamless steel pipe are respectively connected to the two side beams.

[0011] Preferably, a motor hanger and a gear box hanger are also provided on any seamless steel pipe, the two motor hangers and the two gear box hangers are distributed in a cross shape, and a transverse damper seat is provided on the upper surface of a longitudinal beam.

[0012] Preferably, the motor hanger includes a motor reinforcement plate and a motor seat plate, and the motor reinforcement plate and the motor seat plate are also provided with weight reduction holes.

[0013] The utility model also provides a bogie, comprising the bogie frame as described above.

[0014] The utility model also provides a rail transit vehicle, comprising the bogie as described above.

[0015] Compared with the above-mentioned background technology, the bogie frame provided by the utility model includes two side beams and a cross beam arranged between the two side beams, the cross beam and the two side beams are in an H-shaped structure, the side beams include a side beam upper cover plate, the two ends of the side beam upper cover plate are respectively welded with a first end cover plate and a second end cover plate, and the weld extends obliquely along the length direction of the side beam upper cover plate, and a reinforcing rib plate is inserted on the surface of the side beam upper cover plate, and the side beam also includes an integrated side beam lower cover plate, the side beam lower cover plate and the side beam upper cover plate are connected by the inner and outer side beam vertical plates, a cap barrel is welded on the first end cover plate, the side wall of the cap barrel is welded to the inner and outer side beam vertical plates, and the side beam lower cover plate is provided with a through hole, and the end of the through hole covers the bottom end of the cap barrel. With such a configuration, the beneficial effects of the bogie frame are:

[0016] 1. A reinforcing rib plate is inserted on the surface of the side beam upper cover plate, that is, the side beam upper cover plate and the reinforcing rib plate are connected by an inserting method, which enhances the structural strength of the side beam upper cover plate compared to a single-sided groove weld.

[0017] 2. The weld between one end of the side beam upper cover and the first end cover, as well as the weld between the other end of the side beam upper cover and the second end cover, are all bevel butt welds, that is, the weld extends obliquely along the length direction of the side beam upper cover, rather than perpendicular to the length extension direction of the side beam upper cover. Compared with straight butt welds, bevel butt welds not only have a stronger stress bearing capacity and reduce stress concentration in the weld, but also increase the area of ​​the weld and reduce the force at the weld. At the same time, the bevel butt weld structure shortens the distance between the edge of the end cover and the cap barrel, increases the welding space between the cap barrel and the inner welding corners of the inner and outer vertical plates of the side beam, and makes it easier for the welding gun to extend into welding, so there is more welding space.

[0018] 3. The weld between the cap barrel and the inner and outer vertical plates of the side beam is a double-sided weld, which enhances the connection strength here. The double-sided weld can be used here because: the welding sequence is to weld the first end cover plate and the cap barrel first, and then weld the upper cover plate of the side beam. This ensures that the inner side of the weld between the cap barrel and the inner and outer vertical plates of the side beam can also be welded, that is, a double-sided weld.

[0019] 4. The side beam lower cover is provided with a through hole, and the end of the through hole covers the bottom of the cap barrel, that is, the non-through hole part of the side beam lower cover is fully wrapped around the cap barrel, thereby increasing the contact area between the side beam lower cover and the cap barrel, and strengthening the strength of the connection between the two, thereby reducing the stress concentration of the side beam lower cover around the through hole, thereby improving the structural reliability of the frame and enhancing the safety of vehicle operation.

[0020] Furthermore, the upper surfaces of the side beam upper cover plate, the first end cover plate and the second end cover plate are arranged flush, and the lower surfaces of the first end cover plate and the second end cover plate are provided with a raised structure, which is adapted to the cap barrel and arranged on the inner side of the cap barrel. In this way, the strength of the two ends of the side beam upper cover plate can be enhanced while ensuring the levelness of the upper surfaces of the four corners of the two side beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the upper surface of a bogie frame provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the lower surface of a bogie frame provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the protruding structures of the first end cover plate and the second end cover plate of the bogie frame provided in an embodiment of the utility model before processing;

[0025] Figure 4 A schematic diagram of the protruding structures of the first end cover plate and the second end cover plate of the bogie frame provided in an embodiment of the utility model after processing;

[0026] in:

[0027] 1. Side beam, 2. Cross beam, 3. Axle box locating seat, 4. Anti-roll torsion bar seat, 5. Brake hanger, 6. Vertical shock absorber seat, 7. Seamless steel pipe, 8. Longitudinal beam, 9. Motor hanger, 10. Gear box hanger, 11. Traction rod seat, 12. Vertical stop seat, 13. Transverse shock absorber seat, 14. Side beam upper cover plate, 15. First end cover plate, 16. Second end cover plate, 17. Side beam lower cover plate, 18. Reinforcement rib plate, 19. Brake connecting plate seat, 20. Cap tube, 21. Motor reinforcement plate, 22. Motor seat plate, 23. Raised structure. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The bogie frame provided by the utility model, see Figure 1 and Figure 2 , including two side beams 1 and a cross beam 2 arranged between the two side beams 1, and the cross beam 2 and the two side beams 1 are in an H-shaped structure.

[0031] The side beam 1 includes a side beam upper cover plate 14, and a first end cover plate 15 and a second end cover plate 16 are welded to the two ends of the side beam upper cover plate 14, and the weld extends obliquely along the length direction of the side beam upper cover plate 14. Figure 1 The two end edges of the side beam upper cover plate 14 are not perpendicular to the extension direction of the side beam upper cover plate 14, but have a certain inclination angle compared to the extension direction of the side beam upper cover plate 14. After the first end cover plate 15 and the second end cover plate 16 are welded at both ends of the side beam upper cover plate 14, an oblique butt weld is formed. The oblique butt weld can also avoid interference with the connection between the reinforcing rib plate 18 and the brake connecting plate seat 19, thereby optimizing the structure.

[0032] A reinforcing rib plate 18 is inserted into the surface of the side beam upper cover plate 14, and the reinforcing rib plate 18 is arranged at a position close to the weld. It can be seen that the oblique butt weld plays a role of avoiding the reinforcing rib plate 18. At the same time, a plug-in structure is used to realize the connection between the side beam upper cover plate 14 and the reinforcing rib plate 18. Its function is similar to that of the reinforcing rib plate 18 being connected to the side beam upper cover plate 14 by a circular weld. Compared with the single-sided groove weld method, the structural strength of the side beam 1 is enhanced.

[0033] The side beam 1 also includes an integrated side beam lower cover plate 17, which is connected to the side beam upper cover plate 14 via the inner and outer vertical plates of the side beam. A cap barrel 20 is welded to the first end cover plate 15, and the side walls of the cap barrel 20 are welded to the inner and outer vertical plates of the side beam. The side beam lower cover plate 17 is provided with a through hole, and the end of the through hole covers the bottom end of the cap barrel 20.

[0034] It can be seen that the through hole size of the side beam lower cover plate 17 is the same as the bottom end size of the cap cylinder 20, and the non-through hole portion of the side beam lower cover plate 17 covers the bottom end of the cap cylinder 20, so that the bottom end contact area of ​​the side beam lower cover plate 17 and the cap cylinder 20 is maximized, thereby enhancing the connection reliability between the two, reducing the stress concentration of the side beam lower cover plate 17, and improving the overall structural strength of the bogie frame.

[0035] The upper surfaces of the side beam upper cover plate 14, the first end cover plate 15 and the second end cover plate 16 are arranged flush with each other. Figure 3 and attached Figure 4 A protruding structure 23 is provided on the lower surface of the first end cover plate 15 and the second end cover plate 16 . The protruding structure 23 is matched with the cap barrel 20 , and the protruding structure 23 is provided on the inner side of the cap barrel 20 .

[0036] Attached Figure 3 FIG. 2 shows a schematic diagram of the protruding structure 23 of the first end cover plate 15 and the second end cover plate 16 before processing. Figure 4 It is a schematic diagram of the raised structure 23 after processing; based on the existence of the raised structure 23, the thickness of the first end cover plate 15 and the second end cover plate 16 can be increased, thereby enhancing the structural strength of the first end cover plate 15 and the second end cover plate 16. During assembly, the upper surfaces of the first end cover plate 15 and the second end cover plate 16 are flush with the upper surface of the side beam upper cover plate 14, that is, ensuring that the upper surfaces of the four corners of the side beam 1 are flat.

[0037] An axle box locating seat 3, an anti-roll torsion bar seat 4, a brake hanger 5 and a vertical shock absorber seat 6 can also be arranged on each side beam 1. Four axle box locating seats 3 are arranged on each side beam lower cover plate 17, two of which form a group, and each group of axle box locating seats 3 are symmetrically arranged on both sides of the cross beam 2. An anti-roll torsion bar seat 4 is arranged on each side beam lower cover plate 17. The two anti-roll torsion bar seats 4 are arranged opposite to each other and are located near the middle of the side beam lower cover plate 17. Two brake hangers 5 are arranged on each side beam 1, which are respectively located on both sides of the cross beam 2. The brake hangers 5 are arranged on the inner sides of the inner and outer vertical plates of the side beam, that is, a total of four brake hangers 5 are arranged opposite to each other in pairs. A total of four vertical shock absorber seats 6 are arranged, and a vertical shock absorber seat 6 is provided at both ends of the side beam lower cover plate 17, and the vertical shock absorber seat 6 is closer to the end edge of the side beam lower cover plate 17 than the cap barrel 20.

[0038] The cross beam 2 includes two parallel seamless steel pipes 7, two longitudinal beams 8 are arranged between the two seamless steel pipes 7, and the two longitudinal beams 8 are respectively located at both ends of the seamless steel pipe 7, and the two ends of the seamless steel pipe 7 are respectively connected to the two side beams 1. The seamless steel pipe 7 and the side beam 1 can be transitionally connected by forgings, etc., so as to reduce stress concentration.

[0039] A motor hanger 9 and a gear box hanger 10 are also provided on any seamless steel pipe 7. The two motor hangers 9 and the two gear box hangers 10 are distributed in a cross shape. A transverse shock absorber seat 13 is provided on the upper surface of a longitudinal beam 8. The gear box hanger 10 includes a traction rod seat 11. A vertical stop seat 12 is also provided on each seamless steel pipe 7.

[0040] The motor hanger 9 includes a motor reinforcement plate 21 and a motor base plate 22, and the motor reinforcement plate 21 and the motor base plate 22 are also provided with weight-reducing holes, which can reduce the weight of the motor hanger 9 and conveniently weld the inner welds at the connection. The motor base plate 22 is provided with three motor vertical plates, which are arranged in parallel. A motor reinforcement plate 21 is provided between every two motor vertical plates, wherein double-sided welds are provided between the motor reinforcement plate 21 and the motor vertical plate, between the motor base plate 22 and the motor vertical plate, and between the motor reinforcement plate 21 and the seamless steel pipe 7, thereby enhancing the strength of the motor hanger 9 and making the structure of the crossbeam 2 simple, the strength reliable, and the weight light.

[0041] The utility model also provides a bogie and a rail transit vehicle, wherein the bogie comprises the bogie frame described above, and the rail transit vehicle comprises the bogie frame. Other components of the bogie and the rail transit vehicle can refer to the prior art and will not be elaborated here.

[0042] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0043] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A bogie frame, characterized in that: The invention comprises two side beams (1) and a cross beam (2) arranged between the two side beams (1), the cross beam (2) and the two side beams (1) presenting an H-shaped structure, the side beam (1) comprising a side beam upper cover plate (14), two ends of the side beam upper cover plate (14) are respectively welded with a first end cover plate (15) and a second end cover plate (16), and the weld extends obliquely along the length direction of the side beam upper cover plate (14), and the surface of the side beam upper cover plate (14) is plugged with The side beam (1) further comprises an integrated side beam lower cover plate (17), wherein the side beam lower cover plate (17) and the side beam upper cover plate (14) are connected via side beam inner and outer vertical plates, a cap barrel (20) is welded to the first end cover plate (15), a side wall of the cap barrel (20) is welded to the side beam inner and outer vertical plates, and the side beam lower cover plate (17) is provided with a through hole, and an end of the through hole covers the bottom of the cap barrel (20) around the periphery.

2. The bogie frame according to claim 1, characterized in that: The upper surfaces of the side beam upper cover plate (14), the first end cover plate (15) and the second end cover plate (16) are arranged flush.

3. The bogie frame according to claim 1, characterized in that: The lower surfaces of the first end cover plate (15) and the second end cover plate (16) are both provided with a protruding structure (23), the protruding structure (23) is compatible with the cap barrel (20), and the protruding structure (23) is arranged on the inner side of the cap barrel (20).

4. The bogie frame according to claim 1, characterized in that: The reinforcing rib plate (18) is arranged at a position close to the welding seam.

5. The bogie frame according to claim 1, characterized in that: The cross beam (2) comprises two seamless steel pipes (7) arranged in parallel, two longitudinal beams (8) are arranged between the two seamless steel pipes (7), the two longitudinal beams (8) are respectively located at two ends of the seamless steel pipe (7), and the two ends of the seamless steel pipe (7) are respectively connected to the two side beams (1).

6. The bogie frame according to claim 5, characterized in that: Any of the seamless steel pipes (7) is also provided with a motor hanger (9) and a gear box hanger (10), the two motor hangers (9) and the two gear box hangers (10) are arranged in a cross shape, and a transverse damper seat (13) is provided on the upper surface of one of the longitudinal beams (8).

7. The bogie frame according to claim 6, characterized in that: The motor hanger (9) comprises a motor reinforcement plate (21) and a motor seat plate (22), and the motor reinforcement plate (21) and the motor seat plate (22) are also provided with weight reduction holes.

8. A bogie, characterized in that: Comprising a bogie frame as described in any one of claims 1 to 7 above.

9. A rail transit vehicle, characterized in that: Comprising a bogie as claimed in claim 8 above.

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