A bogie frame and a rail vehicle

Abstract

The present application discloses a bogie frame and a rail vehicle, including a cross beam and side beams. The frame includes multiple layers of frame plates, and the multiple layers of frame plates are stacked along the height direction of the frame. Each layer of the frame plate is an integral structure; each layer of the frame plate includes a cross beam plate portion and two side beam plate portions. The cross beam plate portion is located between the two side beam plate portions. The multiple layers of cross beam plate portions are stacked to form the main body of the cross beam, and the multiple layers of side beam plate portions are stacked to form the main body of the side beam. This frame can reduce the accuracy requirements and simplify the assembly process.

Description

Technical Field

[0001] The present invention relates to the technical field of railway vehicles, and particularly relates to a bogie frame and a railway vehicle. Background Art

[0002] The bogie includes a frame, which is the foundation of the bogie. The bogie is used to install wheelsets, braking components, etc. The typical structure of the frame is H-shaped, that is, it includes two side beams, and a cross beam is arranged between the two side beams. Therefore, during the design and manufacturing process of the frame, generally, the cross beam and the side beams are formed separately and then assembled. In this way, there are disadvantages such as high requirements for the processing accuracy of the assembly interface and complex assembly processes. Summary of the Invention

[0003] The purpose of this application is to provide a bogie frame and a railway vehicle to reduce the accuracy requirements and simplify the assembly process.

[0004] The bogie frame provided by this application includes a cross beam and side beams. The frame includes multiple layers of frame plates, and the multiple layers of frame plates are stacked along the height direction of the frame. Each layer of the frame plate is an integral structure; each layer of the frame plate includes a cross beam plate part and two side beam plate parts. The cross beam plate part is located between the two side beam plate parts. The multiple layers of cross beam plate parts are stacked to form the main body of the cross beam, and the multiple layers of side beam plate parts are stacked to form the main body of the side beam.

[0005] In a specific embodiment, the multiple layers of frame plates are assembled through connecting pieces.

[0006] In a specific embodiment, the connecting piece includes a strengthening layer. The multiple layers of cross beam plate parts are stacked to form the cross beam main body, and the strengthening layer at least covers the outer surface of the cross beam main body.

[0007] In a specific embodiment, the strengthening layer includes a composite material layer wound around the outer surface of the cross beam main body.

[0008] In a specific embodiment, a connection hole unit penetrating along the thickness direction is arranged in the middle of the frame plate. The connection hole units of the multiple layers of frame plates are stacked to form a connection hole. The connecting piece includes a fastener, and the multiple layers of frame plates are fastened by inserting the fasteners into the connection holes.

[0009] In a specific embodiment, the connection hole unit is arranged in the middle of the side beam plate part.

[0010] In a specific embodiment, the side beam plate portion includes a middle plate and end plates located on both sides of the middle plate. The height of the end plates is higher than that of the middle plate. The side beam plate portion further includes an inclined plate that connects the end plates and the middle plate. Among two adjacent side beam plate portions, at least one of the end plates has a wear-resistant layer provided on the outer surface facing the other one.

[0011] In a specific embodiment, the frame plate includes one cross beam plate portion, and the cross beam plate portion has a middle hole unit that penetrates in the thickness direction.

[0012] In a specific embodiment, the frame further includes a limiting structure that is used to limit the movement of multiple layers of the side beam plate portions in the longitudinal direction and the height direction.

[0013] In a specific embodiment, the limiting structure is a U-shaped clamp, and the side portion of the side beam is clamped inside the U-shaped clamp; or the limiting structure is an annular clamp, and the side beam passes through the annular clamp.

[0014] This application also provides a rail vehicle, including a bogie, and the bogie includes the bogie described in any one of the above.

[0015] In this application, the frame is formed by laminating multiple frame plates. The processing of a single-layer frame plate is simple. The single-layer frame plate itself includes the basic units of the side beam and the cross beam. After lamination and assembly, the side beam and the cross beam are directly formed without the need to set assembly interfaces, and the assembly process is simple.

[0016] In addition, the side beam of the frame has an end. Since the side beam is a plate-like structure, its end has a certain deformation ability and can be used as a primary spring, that is, a primary spring is no longer specially provided. In this way, the structure of the finally formed bogie is simpler, and the weight can be controlled. Moreover, the end of the side beam is a layered structure, and multiple layers of end plates can disperse and release the deformation and shear force borne when the end of the side beam is used as a primary spring, so that the end will not be damaged due to deformation or the damage will be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the frame 1 of the bogie in the embodiment of this application;

[0018] Figure 2 is Figure 1 a schematic diagram of a single-layer frame plate of the frame in

[0019] Figure 3 is Figure 1 a top view of the frame in

[0020] Figure 4 is Figure 1 a side view of the frame in

[0021] Figure 5 is Figure 1 the left view of

[0022] Figures 1-5 The reference numerals in the drawings are explained as follows:

[0023] 1 - Frame; 11 - Side beam; 11a - Connection hole; 111 - End; 112 - Inclined part; 113 - Middle part; 12 - Cross beam; 121 - Cross beam body; 122 - Reinforcement layer; 12a - Middle hole.

[0024] 1' - Frame plate; 11' - Side plate part; 11a' - Connection hole unit; 111' - End plate; 112' - Inclined plate; 113' - Middle plate; 121' - Cross beam plate part; 121a' - Middle hole unit. Detailed implementation mode

[0025] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation modes.

[0026] As Figures 1-3 shown, Figure 1 is a schematic diagram of the frame 1 of the bogie in the embodiment of the present application; Figure 2 is Figure 1 a schematic diagram of the single - layer frame plate 1' of the frame 1 in Figure 3 is Figure 1 the top view of the frame 1 in

[0027] The frame 1 of the bogie in this embodiment includes a cross beam 12 and two side beams 11. The cross beam 12 connects the two side beams 11 on both sides. The side beams 11 extend longitudinally, and the longitudinal direction is perpendicular to the transverse direction. That is, the frame 1 is specifically an H - shaped frame 1. The number of cross beams 12 is not limited and can be one, two, etc. Figure 1 The cross beam 12 in is one, and a cross - beam middle hole 12a is provided in the middle. The cross beam 12 of this structure has a certain width and can better maintain the strength of the frame 1. The setting of the cross - beam middle hole 12a can achieve the purpose of weight reduction, that is, one cross beam 12 achieves the connection effect of two cross beams, and the integrity is better. Of course, the specific structure of the cross beam 12 in this embodiment is not limited.

[0028] It should be emphasized that the frame 1 in this embodiment includes multiple layers of frame plates 1' made of composite materials. Each layer of frame plate 1' is an integral structure, and the frame plate 1' can specifically be a carbon fiber plate. Its integral forming process can be manual laying, automatic laying or similar processes, and finally cured and formed. The main structure of the frame 1 in this embodiment is composed of multiple layers of frame plates 1' along the height direction of the frame 1 (shown in Figure 4) formed by stacking, the height direction of the frame 1 is also the thickness direction of the frame plate 1'. From Figure 2 viewpoint, the basic shape of the frame plate 1' is consistent with the shape of the overall frame 1, that is, it is also an H-shaped plate structure. Specifically, each layer of the frame plate 1' includes a cross beam plate portion 121' and two side beam plate portions 11'. The cross beam plate portion 121' is located between the two side beam plate portions 11'. The multi-layer cross beam plate portions 121' are stacked to form the main body of the cross beam 12, and the multi-layer side beam plate portions 11' are stacked to form the main body of the side beam 11.

[0029] As Figure 1 shown, in this embodiment, the frame 1 is formed by stacking multiple frame plates 1'. The processing of a single-layer frame plate 1' is simple. The single-layer frame plate 1' itself includes the basic units of the side beam 11 and the cross beam 12. After stacking and assembling, the side beam 11 and the cross beam 12 are directly formed without the need to set up assembly interfaces, and the assembly process is simple.

[0030] In addition, the side beam 11 of the frame 1 has an end portion 111. In this embodiment, the side beam 11 is formed by stacking multiple side beam plate portions 11'. Therefore, the side beam 11 is a plate-like structure, and its end portion 111 has a certain deformation ability and can be used as a primary spring, that is, no special primary spring is set up. In this way, the structure of the finally formed bogie is simpler and the weight can be controlled.

[0031] It should be noted that when the end portion 111 of the side beam 11 acts as a primary spring, there will be a certain deformation during the working process of the end portion 111, and the displacement amounts of the upper surface and the lower surface of the end portion 111 are not the same. At this time, as Figure 2 shown, the side beam plate portion 11' of the frame plate 1' includes an end plate 111'. In this embodiment, the frame 1 is formed by stacking multiple frame plates 1'. Therefore, the end portion 111 of the side beam 11 is finally formed by stacking the end plates 111' of multiple side beam plate portions 11'. At this time, the end portion 111 of the side beam 11 is not a whole structure but a layered structure. The multiple end plates 111' can disperse and release the deformation and shear force borne by the end portion 11 of the side beam 11. That is, the side beam 11 of the frame 1 has a multi-layer structure end portion 111, so that when it is used as a primary spring, it will not be damaged due to deformation or reduce this kind of damage. It can be seen that in this embodiment, the multiple end plates 111' of the end portion 111 are actually separated from each other, that is, they are only in a stacked relationship, and the adjacent end plates 111' are not fixed and are in a contactable relationship, and they are at least movable in the deformation displacement direction of the end portion 111.

[0032] Specifically in this embodiment, in order to better meet the stiffness requirements for the end portion 111 of the side beam 11 to be used as a primary spring, the side beam 11 can be set as an inverted hat-shaped structure.

[0033] It can be understood in combination with Figure 4 this.Figure 4 is Figure 1 a side view of the middle frame 1 in

[0034] In this embodiment, the side beam plate part 11' includes a middle plate 113' and end plates 111' located on both sides of the middle plate 113'. The height of the end plates 111' is higher than that of the middle plate 113'. In the working state, the end plates 111' and the middle plate 113' are arranged substantially horizontally. The side beam plate part 11' further includes inclined plates 112'. Each side beam plate part 111' specifically includes two inclined plates 112'. Each inclined plate 112' is used to connect the end plate 111' and the middle plate 113'. In this way, the end plate 111' is suspended relative to the middle plate 113' through the inclined plate 112', so that the end plate 111' will have better elasticity. By adjusting the inclination angle of the designed inclined plate 112', the stiffness of the end plate 111' can be adjusted more flexibly. After being stacked, the end 111 of the formed side beam 11 is more likely to meet the stiffness requirements for use as a primary spring. As Figure 2 shown, multiple layers of middle plates 113' are stacked to form the middle part 113 of the side beam 11, multiple layers of inclined plates 112' are stacked to form the inclined part 112 of the side beam 11, and multiple layers of end plates 111' are stacked to form the end 111 of the side beam 11.

[0035] In addition, in this embodiment, in two adjacent side beam plate parts 11' of the side beam 11, at least one of the at least end plates 111' is provided with a wear-resistant layer (not shown in the figure) on the outer surface facing the other. That is, it is sufficient to have a wear-resistant layer between two adjacent end plates 111'. The wear-resistant layer can be provided on both opposite side surfaces of two adjacent end plates 111', or only on one of them. As analyzed above, when the end 111 deforms, the deformation amounts of the end plates 111' of different layers are different, so relative displacement will occur between two adjacent end plates 111'. The setting of the wear-resistant layer can, on the one hand, reduce the wear caused by the relative displacement, and on the other hand, can play a damping effect, that is, reduce the deformation displacement amount. The deformation amount described in this application, when there are multiple layers of end plates 111', mainly refers to the possible relative displacement in the longitudinal direction between adjacent end plates 111'.

[0036] It can be seen that since the end 111 of the side beam 11 is used as a primary spring, the deformation mainly occurs at the end 111 of the side beam 11. Therefore, it is sufficient to set the wear-resistant layer mainly on the surface of the end plate 111', but the setting area of the wear-resistant layer can also be larger. For example, the surface of the inclined plate 112' can also be provided with a wear-resistant layer. The specific setting range of the wear-resistant layer can be considered according to the actual situation of the deformation. The wear-resistant layer can be a coating directly coated on the surface of the end plate 111'.

[0037] Please continue to refer to Figure 1, in this embodiment, the multi-layer crossbeam plate parts 121' of the multi-layer frame plate 1' are stacked to form the crossbeam body 121 of the crossbeam 12, and the outer surface of the crossbeam body 121 is also covered with a strengthening layer 122. In this way, on the one hand, the strengthening layer 122 can improve the strength of the crossbeam 12. In addition, the strengthening layer 122 also serves to fix the multi-layer frame plates 1' together. The multi-layer frame plates 1' in the embodiment of the present application are stacked together and need to be assembled into the frame 1, so the multi-layer frame plates 1' need to be assembled together through connecting pieces. Here, the strengthening layer 122 can be used as a connecting piece. Specifically, the strengthening layer 122 can be a composite material layer wound around the outer surface of the crossbeam body 121, such as a carbon fiber layer, that is, the strengthening layer 122 can be formed on the crossbeam body 121 by means of paving and the like.

[0038] In addition, in this embodiment, the crossbeam plate part 121' has a middle hole unit 121a', and a plurality of middle hole units 121a' are stacked to form the middle hole 12a of the crossbeam 12. The hole wall of the middle hole 12a is the inner surface of the crossbeam body 121, and the strengthening layer 122 can be as Figure 1 shown, only covered on the outer surface of the crossbeam body 121, so that such covering is easier to carry out. Of course, the strengthening layer 122 can also be covered on the inner surface of the crossbeam body 121.

[0039] The crossbeam 12 in this embodiment is covered with a strengthening layer 122. It can be seen that the strengthening layer 122 can also be covered on the outer surface of the middle part of the side beam 11. The side beam 11 mainly uses the end part 111 as a primary spring and will deform, but the middle part 113 of the side beam 11 basically does not deform. Covering the strengthening layer 122 on the middle part of the side beam 11 at the same time can better improve the overall strength of the frame 1.

[0040] In addition, as Figure 2 shown, a connection hole unit 11a' penetrating along the thickness direction is provided in the middle of the frame plate 1'. Then, the connection hole units 11a' of the multi-layer frame plates 1' can form a connection hole 11a after being stacked, and the multi-layer frame plates 1' can be fastened by fasteners inserted into the connection hole 11a. That is, the fasteners can also be used as a kind of connecting piece. The fasteners are, for example, screws, bolts, etc., so that the multi-layer frame plates 1' can be fixed together.

[0041] In this embodiment, the connection hole unit 11a' is specifically provided in the middle of the side beam plate part 11' of each frame plate 1', that is, provided on the middle plate 113'. It can be seen that it can also be provided on the crossbeam plate part 121'. In this embodiment, the position of the side beam 11 is fixed by inserting fasteners into the connection hole 11a, and the position of the crossbeam 12 is fixed by covering the strengthening layer 122. Then the combined fixing method is more reliable, but obviously only one fixing method is also possible. The assembly method of the multi-layer frame plates 1' of the frame 1 is not limited to this, and other methods can also be used, such as metal clamp parts can also be provided, or fixed by bonding and the like.

[0042] In addition, in combination with Figure 5 understanding, Figure 5 is Figure 1 the left view of.

[0043] As Figure 2 shown, in this embodiment, the frame plate 1' is provided with an arc-shaped concave unit A' at the corner position where the cross beam plate part 121' and the side beam plate part 11' are joined. As Figure 1 shown, after multiple layers of frame plates 1' are stacked, an arc-shaped concave part A is formed at the corner position where the side beam 11 and the cross beam 12 are joined. By setting it like this, the stress concentration here can be relieved.

[0044] The frame plate 1' in this embodiment can be directly laid and formed in a mold. In order to improve the strength, the laid and formed frame plate 1' can also be compacted by a pressing mold. The above-mentioned arc-shaped concave unit A', middle hole unit 121a', etc. can all be directly formed in the mold, or can also be formed by later cutting after basically being formed.

[0045] Furthermore, the frame 1 in this embodiment can further include a limiting structure. The limiting structure can be clamped on the side of multiple layers of side beam plate parts 11' to limit the displacement of multiple layers of side beam plate parts 11' in the horizontal or height direction, so as to further ensure the structural stability of the frame 1. As mentioned above, when the end part 111 of the side beam 11 deforms, the adjacent end part plates 111' may generate relative displacement longitudinally, then the limiting structure does not limit the displacement longitudinally. The limiting structure is, for example, a U-shaped clamp. Multiple layers of side beam plate parts 11' are clamped into the U-shaped clamp. Specifically, the end part 111 or the inclined part 112 of the side beam 11 can be clamped into the U-shaped clamp, or both can be clamped. The middle part 13 of the side beam 11 does not deform or has a small deformation amount, and the limiting structure can be not provided. The limiting structure is not limited to being a U-shaped clamp. For example, it can also be an annular clamp, and the side beam 11 can pass through the annular clamp. The limiting structure can also be a baffle plate arranged on both sides of the side beam 11, etc.

[0046] This embodiment also provides a rail vehicle, including a bogie. The bogie includes the bogie described in any of the above embodiments, and has the same technical effects, which will not be elaborated here.

[0047] In this article, specific examples are used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A bogie frame, comprising a cross beam and side beams, characterized in that, The said frame structure includes multiple layers of frame plates, and the multiple layers of said frame plates are stacked along the height direction of the frame structure. Each layer of said frame plate is an integral structure. Each layer of said frame plate includes a crossbeam plate part and two side beam plate parts. The crossbeam plate part is located between the two side beam plate parts. The multiple layers of said crossbeam plate parts are stacked to form the main body of the crossbeam, and the multiple layers of said side beam plate parts are stacked to form the main body of the side beam.

2. The frame of the bogie according to claim 1, characterized in that, The multiple layers of said frame plates are assembled by connecting parts.

3. The frame of the bogie according to claim 2, characterized in that, The said connecting part includes a strengthening layer. The multiple layers of said crossbeam plate parts are stacked to form the crossbeam main body, and the strengthening layer at least covers the outer surface of the crossbeam main body.

4. The framework according to claim 3, characterized in that, The said strengthening layer includes a composite material layer wound around the outer surface of the crossbeam main body.

5. The frame of the bogie according to claim 2, characterized in that, A connection hole unit penetrating along the thickness direction is provided in the middle of the said frame plate. The connection hole units of the multiple layers of said frame plates are stacked to form a connection hole. The said connecting part includes a fastening part, and the multiple layers of said frame plates are fastened by inserting the fastening part into the connection hole.

6. The frame of the bogie according to claim 5, characterized in that The said connection hole unit is provided in the middle of the side beam plate part.

7. The frame of the bogie according to any one of claims 1-6, characterized in that, The said side beam plate part includes a middle plate and end plates located on both sides of the middle plate. The height of the end plates is higher than that of the middle plate. The side beam plate part further includes an inclined plate that connects the end plates and the middle plate. Among two adjacent side beam plate parts, at least one of the at least one end plate is provided with a wear-resistant layer on the outer surface facing the other.

8. The frame of the bogie according to any one of claims 1-6, characterized in that, The said frame plate includes one crossbeam plate part, and the crossbeam plate part has a middle hole unit penetrating along the thickness direction.

9. The frame of the bogie according to any one of claims 1-6, characterized in that, The said frame structure further includes a limiting structure, and the limiting structure is used to limit the movement of the multiple layers of said side beam plate parts in the lateral direction and the height direction.

10. The frame of the bogie according to claim 9, characterized in that, The said limiting structure is a U-shaped clamp, and the side part of the side beam is clamped in the U-shaped clamp; or the limiting structure is an annular clamp, and the side beam passes through the annular clamp.

11. An orbital vehicle, characterized in that, It includes a bogie, and the bogie includes the bogie according to any one of claims 1-10.

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