Rail vehicle and bogie, bogie crossbeam and bogie crossbeam module thereof

Abstract

The application discloses a rail vehicle and a bogie, a bogie crossbeam and a bogie crossbeam module thereof. The bogie crossbeam comprises a carbon fiber beam body with three cavities, and the three cavities are arranged along the extension direction of the crossbeam body. In the cross section of the bogie crossbeam, a first cavity among the three cavities is located in the middle, and a second cavity and a third cavity among the three cavities are symmetrically arranged on the two sides of the first cavity. The first cavity is provided with an upper and lower through mounting hole at the center position. The scheme can improve the overall rigidity of the crossbeam, has good load capacity on the basis of meeting the general assembly design requirements, and can reduce the weight of the crossbeam based on the carbon fiber material and has good assembly process. Meanwhile, the bogie crossbeam module is integrally provided with an additional air chamber, the assembly space of the bogie crossbeam can be further fully utilized, and the integration degree is good.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a rail vehicle and its bogie, bogie crossbeam, and bogie crossbeam module. Background Technology

[0002] With the rapid development of rail transit, bogies for rail vehicles have become a key research and development focus in the industry. Traditional metal bogie frames typically use two round or square tubes welded together with auxiliary beams and mounting supports. Metal bogie beams are heavy, and their manufacturing process is complex, requiring numerous steps such as material preparation and welding. Furthermore, metal bogie beams are prone to corrosion.

[0003] A typical carbon fiber bogie crossbeam is designed as two separate "U"-shaped carbon fiber crossbeams. To increase the overall stiffness of the two individual crossbeams, an auxiliary beam is used to assemble and connect them. This combination of separate crossbeams and auxiliary beams increases the assembly complexity of the bogie crossbeams.

[0004] In view of this, it is urgent to improve and optimize the crossbeam of the carbon fiber bogie in order to balance the overall rigidity and assembly processability. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a rail vehicle and its bogie, bogie crossbeam, and bogie crossbeam module. Through structural optimization, the overall rigidity of the crossbeam can be effectively improved, and the assembly processability can be enhanced.

[0006] The bogie crossbeam provided by the present invention includes a carbon fiber beam body with three cavities, and the three cavities are arranged along the extension direction of the crossbeam body; in the cross section of the bogie crossbeam, the first cavity of the three cavities is located in the middle, and the second and third cavities of the three cavities are symmetrically arranged on both sides of the first cavity; wherein, the center of the first cavity has a vertically penetrating mounting hole.

[0007] Optionally, the bottom surface of the bogie crossbeam has an upwardly formed concave portion at the center, and the lower edge of the mounting hole is located in the concave portion.

[0008] Optionally, the two end faces of the bogie crossbeam are provided with connection interfaces for adapting to the bogie side beams.

[0009] Optionally, the mounting hole is a square hole.

[0010] The application further provides a bogie crossbeam module, comprising an air chamber assembly and the bogie crossbeam as described above; the air chamber assembly comprises two built-in gas cylinders arranged in the beam body of the bogie crossbeam and used for being connected with air springs on both sides of the bogie respectively, wherein the first built-in gas cylinder is arranged in the second cavity of the bogie crossbeam, the second built-in gas cylinder is arranged in the third cavity of the bogie crossbeam, and the first built-in gas cylinder and the second built-in gas cylinder are arranged along the extension direction of the corresponding cavity.

[0011] Optionally, the air chamber assembly further comprises two external gas cylinders arranged outside the bottom of the beam body of the bogie crossbeam, wherein the first built-in gas cylinder and the first external gas cylinder are connected with each other through a mounting pipeline to form an air chamber, and the second built-in gas cylinder and the second external gas cylinder are connected with each other through a mounting pipeline to form another air chamber.

[0012] Optionally, the first external gas cylinder and the second external gas cylinder are arranged at the two ends of the bogie crossbeam respectively and are arranged along a direction perpendicular to the beam body of the bogie crossbeam.

[0013] Optionally, the air chamber assembly further comprises two valve groups and a differential pressure valve, the first built-in gas cylinder and the first external gas cylinder are connected through the first valve group, a first air chamber interface for being connected with the air spring on the corresponding side is arranged on the first valve group, the second built-in gas cylinder and the second external gas cylinder are connected through the second valve group, a second air chamber interface for being connected with the air spring on the corresponding side is arranged on the second valve group, and the differential pressure valve is connected between the two air chambers.

[0014] Optionally, the first valve group, the second valve group and the differential pressure valve are arranged in the first cavity of the bogie crossbeam.

[0015] The application further provides a bogie frame, comprising two longitudinally arranged bogie side beams and a transversely arranged bogie crossbeam; the bogie crossbeam adopts the bogie crossbeam as described above.

[0016] The application further provides a railway vehicle, comprising a bogie, and the bogie adopts the bogie frame as described above.

[0017] Aiming at the existing carbon fiber bogie crossbeam, the application proposes a whole carbon fiber crossbeam, specifically, including three cavities arranged along the extension direction of the crossbeam body, in the cross section of the bogie crossbeam, the first cavity of the three cavities is located in the middle, and the second cavity and the third cavity of the three cavities are symmetrically arranged on the two sides of the first cavity; wherein, the first cavity has an upper and lower through mounting hole at the center position, for mounting the central traction device, the transverse stop, the vertical stop and other components. By such arrangement, the overall rigidity of the crossbeam can be improved as a whole, on the basis of meeting the assembly design requirements, the load capacity is good; at the same time, based on the carbon fiber material, the weight of the crossbeam can be reduced, and the assembly process is good.

[0018] In an optional scheme of the application, the provided bogie crossbeam module includes an air chamber assembly and the bogie crossbeam as described above; the air chamber assembly includes two built-in gas cylinders built in the beam body of the bogie crossbeam, for being connected with the air springs on the two sides of the bogie respectively; in this way, based on the carbon fiber crossbeam with overall load capacity, the additional air chambers are integrated in the space inside the crossbeam body, which is further utilized for the overall vehicle layout. In addition, the air chamber assembly further includes two external gas cylinders externally arranged at the bottom of the beam body of the bogie crossbeam, the first built-in gas cylinder and the first external gas cylinder are connected with each other through the installation pipeline to form an air chamber, and the second built-in gas cylinder and the second external gas cylinder are connected with each other through the installation pipeline to form another air chamber, which further utilizes the space at the bottom of the bogie to expand the air chamber layout, and can better meet the configuration needs of the air spring.

[0019] In another optional scheme of the application, the air chamber assembly further includes two valve groups and a differential pressure valve, the first built-in gas cylinder and the first external gas cylinder are connected through the first valve group, the second built-in gas cylinder and the second external gas cylinder are connected through the second valve group, the second air chamber interface for being connected with the corresponding side air spring is located on the second valve group, and the differential pressure valve is connected between the two air chambers to ensure driving safety. Here, the first valve group, the second valve group and the differential pressure valve are all arranged in the first cavity of the bogie crossbeam; by such arrangement, the integration degree of the bogie crossbeam module can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the bogie crossbeam module described in the specific embodiment;

[0021] Figure 2 It is a side view of the bogie crossbeam shown in Figure 1 ;

[0022] Figure 3 It is a side view of the bogie crossbeam shown in Figure 1 ;

[0023] Figure 4 It is a side view of the bogie crossbeam shown in Figure 2Structure diagram of bogie crossbeam in the embodiment;

[0024] Figure 5 Structure diagram of the air chamber assembly in the embodiment;

[0025] Figure 6 Structure diagram of the air chamber assembly in the embodiment; Figure 5 View B of the air chamber assembly in the embodiment;

[0026] Figure 7 View C of the air chamber assembly in the embodiment; Figure 5 View C of the air chamber assembly in the embodiment;

[0027] Figure 8 Pneumatic circuit principle diagram of the air chamber assembly in the embodiment;

[0028] Figure 9 Structure diagram of the bogie crossbeam and the bogie longitudinal beam in the embodiment.

[0029] In the figure:

[0030] Bogie crossbeam module 100, bogie crossbeam 10, first cavity 101, second cavity 102, third cavity 103, square hole 104, inner recess 105, air chamber assembly 20, first built-in gas cylinder 201, second built-in gas cylinder 202, first external gas cylinder 203, second external gas cylinder 204, first valve group 205, first air chamber interface 2051, second valve group 206, second air chamber interface 2061, differential pressure valve 207, side beam 30. Embodiment

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] Without losing generality, the embodiment takes the illustrated bogie crossbeam as the basis for expression, and it should be understood that, as an exemplary description, the size and proportion relationship of each component of the bogie crossbeam does not constitute a substantial limitation on the scope of protection claimed in the present application. Please refer to Figure 1 and Figure 2 Among them, Figure 1 Structure diagram of the bogie crossbeam module in the embodiment, Figure 2 View A of the bogie crossbeam module in the embodiment. Figure 1 View A of the bogie crossbeam module in the embodiment.

[0033] As Figure 1 and Figure 2 The bogie crossbeam module 100 includes the bogie crossbeam 10 and the air chamber assembly 20, and the air chamber assembly 20 is integrated on the bogie crossbeam 10 as a component of the bogie frame, and forms additional air chambers connected with air springs (not shown in the figure) respectively.

[0034] The body of the bogie crossbeam 10 is a whole carbon fiber crossbeam, which comprises three cavities arranged along the extension direction of the crossbeam body. Specifically, in the cross section of the bogie crossbeam, the first cavity 101 is located in the middle, and the second cavity 102 and the third cavity 103 are symmetrically arranged on both sides of the first cavity 101, forming a "eye" shape. The bogie crossbeam 10 described in this embodiment can be made of carbon fiber to realize the corresponding layer structure, and the bogie crossbeam can be manufactured by winding, molding, manual layering and other forming processes according to the layer structure of the crossbeam.

[0035] Please also refer to Figure 3 and Figure 4 , wherein, Figure 3 is Figure 1 the side view of the bogie crossbeam shown in Figure 4 is Figure 2 the structural schematic view of the bogie crossbeam shown in

[0036] The whole carbon fiber bogie crossbeam is symmetrically arranged left and right, that is, symmetrically arranged with respect to the vertical center line of the end face. The first cavity 101 has a through hole 104 at the center position. The through hole 104 separates the first cavity 101 and is used to install central traction device, transverse stop, vertical stop and other components. In other specific implementations, the through hole 104 as a mounting hole can also be circular, rather than limited to the square through hole shown in the figure.

[0037] The bottom surface of the bogie crossbeam 10 has a recessed portion 105 in the middle, that is, the bottom surface of the bogie crossbeam 10 on both sides of the recessed portion 105 protrudes downward along the length direction of the bogie crossbeam 10. As shown in the figure, the lower hole edge of the middle square hole 104 is located in the recessed portion 105.

[0038] In this way, based on the arrangement of the recessed portion 105, the limit of the bogie structure can be met, and the installation and connection of the crossbeam and the central traction device can be realized; at the same time, the bottom surface of the bogie crossbeam 10 on both sides of the recessed portion 105 protrudes downward, and this part is used for connecting the bogie side beam 30, which can maximize the stiffness of the crossbeam. Overall, it has good carrying capacity on the basis of meeting the general assembly design requirements; at the same time, based on the carbon fiber material, the weight of the crossbeam can be reduced, and the assembly process is good.

[0039] In this embodiment, the gas chamber assembly 20 comprises two built-in gas cylinders and two external gas cylinders, wherein the two built-in gas cylinders can be built into the beam body of the bogie crossbeam 10, and the two external gas cylinders are externally arranged at the bottom of the beam body of the bogie crossbeam 10. Please also refer to Figure 5 , Figure 6 and Figure 7 , wherein, Figure 5The overall structure schematic diagram of the air chamber assembly, Figure 6 The B view of Figure 5 Figure 7 The C view of Figure 5

[0040] As shown in the figure, the first built-in gas cylinder 201 is located in the second cavity 102 of the bogie beam 10, and the second built-in gas cylinder 202 is located in the third cavity 103 of the bogie beam 10 and arranged along the extension direction of the two cavities, thereby fully utilizing the internal space of the bogie beam 10. Please also refer to Figure 1 and Figure 2 The first external gas cylinder 203 and the second external gas cylinder 204 are both located below the beam body of the bogie beam 10, and here, the two external gas cylinders are respectively located at both ends of the bogie beam 10 and arranged in a direction perpendicular to the beam body of the bogie beam 10.

[0041] Among them, the first built-in gas cylinder 201 and the first external gas cylinder 203 are connected to each other through the installation pipeline to form an air chamber, and the second built-in gas cylinder 202 and the second external gas cylinder 204 are connected to each other through the installation pipeline to form another air chamber, and are respectively connected to the air spring on the corresponding side.

[0042] In specific implementation, the two external gas cylinders are not limited to being located at the end of the bogie beam 10 in the figure, but can also be a certain distance from the end of the beam body, as long as they can form the above-mentioned air chamber with the corresponding built-in gas cylinder.

[0043] Of course, in other specific implementations, according to the overall design requirements of different vehicle models and the parameter settings of the air spring, the two external gas cylinders can be selectively configured, in other words, the function needs of the air spring can be met through the two built-in gas cylinders.

[0044] For the two built-in gas cylinders and the two external gas cylinders configured in groups, the two gas cylinders in each group can be integrated and connected through a valve group. As shown in the figure, the first built-in gas cylinder 201 and the first external gas cylinder 203 are connected through the first valve group 205, and the first air chamber interface 2051 for connecting the air spring on the corresponding side is located on the first valve group 205; the second built-in gas cylinder 202 and the second external gas cylinder 204 are connected through the second valve group 206, and the second air chamber interface 2061 for connecting the air spring on the corresponding side is located on the second valve group 206. Please also refer to Figure 8 The figure is the air path principle diagram of the air chamber assembly 20 of the embodiment.

[0045] Further, the air chamber assembly 20 further comprises a differential pressure valve 207, which is arranged between the two air chambers, and based on the configuration of the differential pressure valve 207, the difference between the internal pressures of the air springs on both sides of a bogie is ensured to avoid exceeding the threshold value for ensuring driving safety.​​

[0046] It should be noted that the specific function implementation of the first valve group 205, the second valve group 206 and the differential pressure valve 207 is not the core of the present application, and those skilled in the art can implement it based on the prior art, so this paper will not repeat it.

[0047] In the present embodiment, the first valve group 205, the second valve group 206 and the differential pressure valve 207 are all integrated in the bogie beam 10. For example Figure 1 and Figure 2 As shown, the first valve group 205, the second valve group 206 and the differential pressure valve 207 are all located in the first cavity 101 of the bogie beam 10, and it can be understood that according to the actual arrangement position of the pipeline, the corresponding connecting pipe can selectively pass through the partition wall between the cavities to realize the necessary gas path connection relationship.

[0048] Please see Figure 9 , which is a schematic diagram of the assembly relationship between the bogie beam and the bogie longitudinal beam in the present embodiment.

[0049] As shown in the figure, the bogie frame includes Figures 1 to 4 the bogie beam 10 described in the above and two bogie side beams 30. The two side end faces of the bogie beam 10 are provided with connecting interfaces 106 adapted to the bogie side beams 30.

[0050] When assembled, the two ends of the bogie beam 10 are connected and fixed with the side beams 30 of the corresponding side to form Figure 9 the bogie frame shown in the above. In actual application, the upper part of the bogie beam 10 is used to realize the installation of the lateral damper mounting seat and the gear box hanger, and the side of the beam body of the bogie beam 10 is used to realize the installation of the motor mounting support and the traction rod mounting seat.

[0051] It should be noted that the side beams 30 and other functional components of the bogie frame are not the core of the present application, and those skilled in the art can implement them based on the prior art, so this paper will not repeat it.

[0052] In addition to the above bogie beam, bogie beam module and bogie frame, the present embodiment also provides a railway vehicle, which includes the above bogie frame. Based on the carbon fiber bogie beam structure, compared with the split beam, the auxiliary beam assembly connection is cancelled, the overall stiffness of the bogie beam is improved, the weight of the beam is reduced, and the assembly process is good. At the same time, the additional air chamber is integrated, the assembly space is reasonably utilized, and the assembly integration of the bogie is improved. It should be understood that the other functional components of the railway vehicle are not the core of the present application, and those skilled in the art can implement them based on the prior art, so this paper will not repeat it.

[0053] In addition, the ordinal numbers "first" and "second" and the like used herein are only used to describe the same function of the constitution or structure in the technical solutions. It can be understood that the use of the ordinal numbers "first" and "second" and the like does not constitute a limitation on the understanding of the technical solutions claimed by the present application.

[0054] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A bogie cross member module, characterized in that, The bogie crossbeam comprises a carbon fiber beam body with three cavities, and the three cavities are arranged along the extension direction of the beam body; in the cross section of the bogie crossbeam, a first cavity of the three cavities is located in the middle, and a second cavity and a third cavity of the three cavities are symmetrically arranged on both sides of the first cavity; wherein the first cavity has an upper and lower through mounting hole at the center position. The air chamber assembly comprises two built-in gas cylinders arranged in the beam body of the bogie crossbeam, respectively connected with the air springs on both sides of the bogie, wherein the first built-in gas cylinder is arranged in the second cavity of the bogie crossbeam, and the second built-in gas cylinder is arranged in the third cavity of the bogie crossbeam. The air chamber assembly further comprises two external gas cylinders arranged at the bottom of the beam body of the bogie crossbeam, wherein the first built-in gas cylinder and the first external gas cylinder are connected with each other through the mounting pipeline to form an air chamber, and the second built-in gas cylinder and the second external gas cylinder are connected with each other through the mounting pipeline to form another air chamber. The first external gas cylinder and the second external gas cylinder are respectively arranged at the two ends of the bogie crossbeam, and are arranged in a direction perpendicular to the beam body of the bogie crossbeam.

2. The bogie cross member module of claim 1, wherein, The air chamber assembly further comprises two valve groups and a differential pressure valve, the first built-in gas cylinder and the first external gas cylinder are connected through the first valve group, and the first air chamber interface for connecting with the corresponding side air spring is arranged on the first valve group; the second built-in gas cylinder and the second external gas cylinder are connected through the second valve group, and the second air chamber interface for connecting with the corresponding side air spring is arranged on the second valve group; the differential pressure valve is connected between the two air chambers.

3. Bogie cross member module according to claim 1 or 2, characterized in that The first valve group, the second valve group and the differential pressure valve are arranged in the first cavity of the bogie crossbeam.

4. The bogie cross member module of claim 3, wherein, The bottom surface of the bogie crossbeam has an upwardly formed inner recess in the middle, and the lower hole rim of the mounting hole is located in the inner recess.

5. The bogie cross member module of claim 1, wherein, The two side end surfaces of the bogie crossbeam are provided with a connecting interface for adapting with the side beam of the bogie.

6. The bogie cross member module of claim 5, wherein, The mounting hole is a square hole.

7. Bogie cross member module according to claim 5 or 6, characterized in that The bogie crossbeam adopts the bogie crossbeam module of any one of claims 1 to 7.

8. A bogie frame comprising two longitudinally arranged bogie side beams and a transversely arranged bogie cross beam; characterized in that The bogie adopts the bogie frame of claim 8.

9. A railway vehicle comprising a bogie, characterized in that ​

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