Framework combination seat and bogie for railway vehicle

By designing a frame assembly seat for rail vehicles, sharing functional interfaces and using integrated precision casting or forging molding, the problems of excessive weight of the frame structure and complex design of independent mounts in the prior art are solved, and the lightweight of the frame structure and the improvement of manufacturing efficiency are achieved.

CN119953412APending Publication Date: 2025-05-09CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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Patent Information

Application Number
CN202510245114.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-04
Publication Date
2025-05-09

AI Technical Summary

Technical Problem

The structural weight of existing rail transit vehicles is too large, resulting in high unit energy consumption and long braking distances of vehicles. The independent mount design leads to complex structure, poor welding process, and easy to accumulate ice and snow, which increases production and application costs.

Method used

A structural combined seat for rail vehicles is designed. The mounting interface part is formed integrally on one side of the substrate of the seat body, and the functional interface is shared to reduce the number of independent mounting seats. It adopts integrated precision casting or forging to form a box-shaped fully enclosed structure, simplifying the form of welded joints, and improving manufacturing efficiency and structural reliability.

Benefits of technology

The weight of the frame structure is reduced, the vehicle's unit energy consumption is improved and the braking distance is short, the frame design is simplified, the manufacturing efficiency and structural reliability are improved, and the problem of ice and snow accumulation and post-welding processing costs are reduced.

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Abstract

The invention discloses a framework combination seat for a rail vehicle and a bogie with the framework combination seat, and belongs to the technical field of bogies of rail transit vehicles, the framework combination seat is provided with a seat body b capable of being connected with a side beam a, and the seat body b is provided with a base plate. The framework combination seat comprises a base plate, a combination seat body b is arranged on the base plate, a mounting interface part with a mounting function is integrally formed on one side of the base plate, and the mounting interface part comprises at least two functional interfaces and is used for mounting functional components. The framework combination seat has the advantages that the mounting interface part is integrally formed on the base plate, so that the independent mounting seats share one combination seat body b in the prior art; the purposes of reducing the structural weight and improving the reliability of the framework are achieved, meanwhile, the production and manufacturing efficiency of the framework adopting the scheme of the combined seat is improved, the functions of reducing the aerodynamic resistance of the framework and reducing accumulated ice and snow of the framework are achieved, and the combined seat has the beneficial effects of light weight, reliable structure, high manufacturing efficiency and low cost.
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Description

Technical Field

[0001] The invention relates to the technical field of rail transit vehicle bogies, and in particular to a frame assembly seat for rail vehicles and a bogie having the frame assembly seat. Background Art

[0002] As the main body of the rail vehicle's functional components, the frame needs to be equipped with multiple functional interfaces. Usually, each functional interface is designed as an independent mounting seat and connected to the main structure of the frame by welding. Since the existing mounting seats adopt an independent design scheme, there are many mounting seats, and the total weight usually accounts for more than 30% of the frame weight. At the same time, in order to have good welding processability, a large welding space must be left between the existing mounting seats, which further increases the weight of the structure and makes the main structure of the frame complex. With the continuous increase in vehicle speed and increasingly stringent energy-saving and environmental protection requirements, the demand for vehicle structure weight reduction has become more and more prominent. Existing technical means have conducted a lot of weight reduction research and application on the mounting seats through methods such as topological optimization. The weight of a single mounting seat has basically reached the optimal value, so other technical means are needed to further reduce the weight of the mounting seat.

[0003] See attached for existing independent mounts. Figure 1 As shown, the side of the side beam a is welded with an anti-snaking damper mounting seat b and an anti-roll torsion bar mounting seat c, a rib plate d is welded between the side beam a and the anti-snaking damper mounting seat b, and a rib plate e and a rib plate f are welded between the side beam a and the anti-roll torsion bar mounting seat c. The independent mounting seat mainly has the following disadvantages:

[0004] First, each mounting seat is designed independently, and there are many mounting seats. The frame needs to be equipped with a connection interface for each mounting seat. In order to ensure reliable connection between the mounting seat and the frame, multiple reinforcing ribs must be set between the mounting seat and the frame, and between the mounting seats. The additional number of parts increases the weight of the structure, which is not conducive to reducing drag and energy consumption. Secondly, the addition of multiple reinforcing ribs increases the amount of structural welding, resulting in large deformation of the mounting seat after welding. After welding, the functional interface of each mounting seat must be machined in the entire frame state to ensure dimensional accuracy, and the production cost of the frame is high. At the same time, since the rib plates are set in the limited space between the mounting seats, there are problems of crossing, overlapping and multiple welding joints between the welding seams of the mounting seats and rib plates with similar distances, resulting in poor welding processability and poor structural reliability. Finally, the independent design of each mounting seat makes it easy for ice and snow to accumulate in the gaps formed between each mounting seat and the rib plates, and there is a problem of structural damage caused by frost heave, which increases the cost of de-icing and snow removal per user.

[0005] Therefore, in view of the above problems, it is necessary for the present invention to provide a frame assembly seat for rail vehicles and a bogie having the frame assembly seat which is light in weight, reliable in structure, high in manufacturing efficiency and low in cost. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a frame assembly seat for rail vehicles and a bogie having the frame assembly seat, so as to at least solve the problem of heavy weight of the frame structure in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The frame assembly seat for rail vehicles disclosed in the present invention comprises:

[0009] A seat body b capable of being connected to a side beam a, wherein the seat body b has a base plate, one side of the base plate is integrally formed with a mounting interface portion having a mounting function, and the mounting interface portion includes at least two functional interfaces for mounting functional components.

[0010] Furthermore, a connecting plate is formed on the other side of the base plate, and the connecting plate, the base plate and the frame body are combined to form a box structure.

[0011] Furthermore, at least one concave weight-reducing groove is formed on the surface of the base plate on the connecting plate side and on the surface of the connecting plate.

[0012] Furthermore, the base plate and the connecting plate are flat or curved plates.

[0013] Furthermore, the base plate and the connecting plate together form a hollow chamber.

[0014] Furthermore, a rib plate is provided in the hollow chamber.

[0015] Furthermore, the connecting plate is arranged obliquely and forms an inclined angle with the connecting position of the base plate and the frame body.

[0016] Furthermore, the welding seams of the base plate, the connecting plate and the frame body are in the same form.

[0017] Furthermore, the seat body b is formed by forging or casting.

[0018] The bogie disclosed in the present invention comprises a frame body and the above-mentioned frame assembly seat for rail vehicles.

[0019] In the above technical solution, the frame assembly seat for rail vehicles provided by the present invention has the following beneficial effects:

[0020] The frame combination seat for rail vehicles designed by the present invention has an installation interface portion integrally formed on one side of the base plate of the seat body b, and the installation interface portion includes at least two functional interfaces for installing functional components, so that each independent mounting seat in the prior art shares a combination seat body b, thereby achieving the purpose of reducing the structural weight and improving the reliability of the frame, while improving the production and manufacturing efficiency of the frame adopting the combination seat scheme, and having the effects of reducing the aerodynamic resistance of the frame and reducing the accumulation of ice and snow on the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the prior art solution after welding on the frame;

[0023] Figure 2 It is a schematic structural diagram of a frame assembly seat for a rail vehicle disclosed in the present invention after being welded on a frame;

[0024] Figure 3 It is a schematic diagram of the structure of the frame assembly seat for rail vehicles disclosed in the present invention (left side);

[0025] Figure 4 It is a schematic diagram of the structure of the frame assembly seat for rail vehicles disclosed in the present invention (right side);

[0026] Figure 5 It is a structural schematic diagram (elevation angle) of a frame assembly seat for a rail vehicle disclosed in the present invention.

[0027] Description of reference numerals:

[0028] Prior art reference numerals: a-side beam, b-anti-snaking damper mounting seat, c-anti-roll torsion bar mounting seat, d-rib plate, e-rib plate, f-rib plate;

[0029] Reference numerals of the present invention: a, side beam; b, seat body b;

[0030] 1. Base plate; 2. Mounting interface; 3. Connecting plate; 4. Concave weight-reducing groove; 5. Rib plate; 6. Inclination angle. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figure 2 , 3 As shown;

[0033] The invention discloses a frame assembly seat for a rail vehicle, comprising: a seat body b

[0034] The seat body b can be connected to the side beam a of the frame body. One side of the base plate 1 of the seat body b is integrally formed with an installation interface portion with an installation function. The installation interface portion includes at least two functional interfaces for installing functional components. Preferably, a connecting plate 3 is formed on the other side of the base plate 1, and the connecting plate 3, the base plate 1 and the frame body are combined to form a box structure.

[0035] Specifically, the seat body b of the frame assembly seat includes at least one substrate 1 having a thickness;

[0036] The base plate 1 is provided with a mounting interface with certain functions. Based on the structural characteristics of the base plate 1 and the need for weight reduction, at least two functional interfaces 2 should be integrated on one side of the base plate 1, and 0 to multiple connecting plates 3 can be provided on the other side according to structural requirements. The base plate 1 and the connecting plates 3 are used to connect with the main structure of the frame, and the combined seat after connection is constructed as a box-type structure.

[0037] In a preferred embodiment, the base plate 1 and the connecting plate 3 are flat or curved plates, that is, the base plate 1 and the connecting plate 3 can be designed as flat or curved structures as required.

[0038] See also Figure 4 , 5 As shown:

[0039] In a preferred embodiment, in order to further reduce the weight of the structure, the area enclosed by the connecting plate 3 and the base plate 1 should be hollow, and at the same time, the inner surface of the base plate 1 and the connecting plate 3 has at least one concave weight-reducing groove 4, and the thickness of the weight-reducing groove 4 is 10% to 90% of the thickness of the corresponding base plate 1 or the connecting plate 3, and 60% is optimal. According to the structural strength and rigidity requirements, the hollow area can be provided with 0 to multiple rib plates 5;

[0040] See also Figure 3 As shown:

[0041] In a preferred embodiment, in order to reduce aerodynamic drag and avoid accumulation of ice and snow, the connection between the connecting plate 3 and the base plate 1 and the main frame structure should adopt a connection method with an inclination angle 6, wherein the inclination angle of the windward connecting plate 3 and the transverse center plane of the main frame and the horizontal plane of the track should be between 95° and 150°. Considering the comprehensive structural stress conditions, 110° is optimal.

[0042] In a preferred embodiment, in order to facilitate manufacturing and reduce the processing workload after assembly with the frame, the seat body b of the combined seat is formed by one-piece precision casting or forging, and each functional interface is processed in the state of a single piece of the combined seat;

[0043] In the preferred embodiment, in order to facilitate welding and improve welding quality and efficiency, the welds between the base plate 1 and the connecting plate 3 and the frame are designed to be of the same type. According to the strength evaluation results, a T-joint welding scheme can be adopted, or full penetration can be achieved by adding a gasket or adopting a deep penetration process, so as to further improve the structural reliability;

[0044] In a preferred embodiment, grooves are formed at the welding positions of the base plate 1 and the connecting plate 3. By setting appropriate grooves on the base plate 1 and the connecting plate 3, the connecting weld between the seat body b and the side beam a of the frame body can also be set to a butt-jointed full-penetration structure, further improving the weld strength and the structural fatigue resistance and bearing capacity. Therefore, the welding structure of the seat body b can be butt-jointed, T-shaped, or any combination of the two according to design requirements.

[0045] In a preferred embodiment, any other required installation interface parts such as the vertical shock absorber interface can continue to be integrated on the combined seat, thereby achieving the purpose of reducing weight, improving reliability, improving manufacturing efficiency, reducing costs, reducing ice and snow accumulation, and reducing operating resistance.

[0046] In the above technical solution, the frame assembly seat for rail vehicles provided by the present invention has the following beneficial effects:

[0047] Since the number of independent mounting seats is reduced, each functional interface shares the mounting interface portion on the same frame assembly seat, and at the same time, the number of reinforcing ribs between the independent mounting seats in the prior art will also be reduced simultaneously, thereby reducing the number of parts that need to be welded for each function, reducing the weight of the frame configured with the assembly seat structure, and thereby achieving lower unit energy consumption and shorter braking distance for the vehicle under the same operating speed conditions.

[0048] Since each functional interface shares the same installation interface portion on the frame assembly seat, the installation interface portion includes multiple functional interfaces, which reduces the number of installation interface portions that must be set up on the frame configured with the assembly seat structure, reduces the difficulty of frame design, and improves the utilization rate of the equipment layout space on the frame.

[0049] Since each functional interface shares the same frame installation interface, compared with the solution in the prior art that each independently arranged installation seat needs to be welded separately, there is no relative welding deformation between each functional interface after the combined seat is welded once, so it is unnecessary to process each functional interface after the combined seat is welded, which reduces the time of the overall frame processing occupying large-scale CNC equipment, thereby improving the frame manufacturing efficiency and reducing the production cost;

[0050] Since the functional interfaces share the same frame installation interface and the number of parts that need to be welded to achieve each function is reduced, the welding joint form can be further simplified and the number of welds can be reduced, making the welding visibility, accessibility and operability better than independent mounting bases, thereby improving welding efficiency, welding quality and structural reliability, thereby reducing the use and maintenance costs of the structure in the later stage due to poor welding quality.

[0051] Since the combined seat is implemented by an integrated precision casting or forging process, each functional interface is processed in the state of a single component after casting or forging, and the reinforcing ribs arranged between the existing independent mounting seats can be realized by the parent material design structure through integrated casting, forging or processing, so that the welds of the reinforcing ribs that need to be welded to the existing independent mounting seats are transformed into the parent material, and the structural reliability is further improved.

[0052] Since the combined seat and the frame body form a box-shaped fully enclosed structure after welding, the load-bearing and deformation resistance of the combined seat with the box-shaped structure are better than those of the existing independent mounting seats. Taking the installation of shock absorbers as an example, since the overall rigidity of the combined seat box-shaped structure is greater, the working efficiency of the shock absorber damping characteristics can be improved.

[0053] Since the combined seat and the frame body are welded to form a box-shaped fully enclosed structure, the narrow gaps between the existing independent mounting seats and the frame and between the mounting seats are completely eliminated. At the same time, the windward outer surfaces of the combined seats are designed as inclined surfaces with an angle, which can solve the problem of ice and snow accumulation when the vehicle is used in winter, reduce the pressure of de-icing and snow removal operations in the use department, and avoid structural damage and functional failure of the mounting seat caused by rain and snow frost heaving.

[0054] In the above technical solution, the bogie provided by the present invention includes a frame body and the above-mentioned frame assembly seat for rail vehicles, and therefore has the same beneficial effects as the frame assembly seat, which will not be described in detail here.

[0055] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A frame assembly seat for a rail vehicle, comprising: The seat body b that can be connected to the side beam a is characterized by: The seat body b comprises a base plate (1), one side of the base plate (1) is integrally formed with a mounting interface portion having a mounting function, the mounting interface portion comprising at least two functional interfaces for mounting functional components.

2. The frame assembly seat for a rail vehicle according to claim 1, It is characterized by: A connecting plate (3) is formed on the other side of the base plate (1), and the connecting plate (3) is combined with the base plate (1) and the frame body to form a box structure.

3. The frame assembly seat for a rail vehicle according to claim 2, It is characterized by: At least one concave weight-reducing groove (4) is formed on the surface of the base plate (1) located on the side of the connecting plate (3) and on the surface of the connecting plate (3).

4. The frame assembly seat for rail vehicles according to claim 2, characterized in that ； The base plate (1) and the connecting plate (3) are flat or curved plates.

5. The frame assembly seat for rail vehicles according to claim 2, characterized in that ； The base plate (1) and the connecting plate (3) together form a hollow chamber.

6. The frame assembly seat for rail vehicles according to claim 5, characterized in that ； A rib plate (5) is arranged in the hollow chamber.

7. The frame assembly seat for a rail vehicle according to claim 2, It is characterized by: The connecting plate (3) is arranged obliquely, and forms an inclined angle with the connecting position of the base plate (1) and the frame body.

8. The frame assembly seat for a rail vehicle according to claim 2, It is characterized by: The welding seams of the base plate (1) and the connecting plate (3) are in the same form as the frame body.

9. The frame assembly seat for rail vehicles according to claim 1, characterized in that ； The seat body b is formed by forging or casting.

10. A bogie, characterized in that: The invention comprises a frame body and a frame assembly seat for a rail vehicle as claimed in any one of claims 1 to 9.