Railway vehicle bogie frame, bogie and railway vehicle

Abstract

The present application relates to the field of rail vehicle technology, and provides a rail vehicle bogie frame, a bogie and a rail vehicle, the rail vehicle bogie frame comprising two side beams, a cross beam and two air spring support seats.The two side beams are arranged in parallel.The cross beam is arranged between the two side beams, and a center pin mounting channel for connecting a center pin is formed in the middle of the cross beam.The wheels of the rail vehicle are adapted to be mounted on the outer sides of the two side beams, each side beam is provided with a mounting hole, a connecting piece is arranged in the mounting hole, the end of the connecting piece is located on the outer side of the side beam, and a tread cleaner mounting seat and a wheel disc brake mounting seat are connected to the end of the connecting piece.A shaft disc brake mounting seat is arranged on one side of the cross beam along the length direction parallel to the side beam, so that the frame has the advantages of light weight, strong curve passing capacity and the like, the running quality of the rail vehicle is improved, and the wheel-rail force is reduced.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to a rail vehicle bogie frame, bogie, and rail vehicle. Background Technology

[0002] The bogie frame directly affects the running performance of rail vehicles. In traditional bogies, the wheels and axle boxes are located inside the frame, resulting in a large frame and wheel mass, difficulty in navigating small-radius curves, and poor adaptability to track twisting. Furthermore, the current frame design lacks spatial compactness in the arrangement of wheel disc brake mounts and axle disc brake mounts compared to other mounts. Summary of the Invention

[0003] This invention provides a bogie frame for rail vehicles to solve the technical problems of poor ability of rail vehicles to pass through small-radius curves and poor rationality of the layout of each mounting seat in the prior art, which result in poor overall structural compactness. It improves the ability of rail vehicles to pass through small-radius curves, reduces the mass of the bogie, improves the running quality of rail vehicles, and makes the frame structure more compact.

[0004] The present invention also provides a bogie.

[0005] The present invention also provides a rail vehicle.

[0006] This invention provides a bogie frame for rail vehicles, comprising:

[0007] Two side beams, the two side beams being arranged in parallel;

[0008] A crossbeam is disposed between the two side beams, and a center pin mounting channel for connecting the center pin is formed in the middle of the crossbeam;

[0009] Two air spring support seats are respectively located on the side of the two side beams away from each other;

[0010] The wheels of the rail vehicle are adapted to be installed on the outer side of the two side beams. Each side beam is provided with a mounting hole, and a connector is inserted into the mounting hole. The end of the connector is located on the outer side of the side beam and is connected to a tread cleaner mounting seat and a wheel disc brake mounting seat. A wheel disc brake mounting seat is provided on one side of the crossbeam along the length direction parallel to the side beam.

[0011] According to a rail vehicle bogie frame provided by the present invention, the air spring support seat has a hollow interior forming a first cavity, and the upper surface of the air spring support seat is provided with an air spring cylinder for installing an air spring, and the air spring cylinder has an installation channel communicating with the first cavity.

[0012] A second cavity is formed within the side beam, and an air hole is constructed on the side of the side beam facing the air spring mounting seat to connect the first cavity and the second cavity and form an additional air chamber.

[0013] According to a rail vehicle bogie frame provided by the present invention, the connecting member is provided with a connecting seat. The cross-section of the connecting seat is I-shaped along the height direction of the side beam. The connecting seat includes a C-shaped beam and a support beam arranged along the length direction of the side beam, and a web plate arranged along the height direction of the side beam. The C-shaped beam and the support beam are respectively connected to the upper and lower sides of the web plate. The side edges of the C-shaped beam extend outward with ear plates. The ear plates are provided with tread cleaner mounting seats. The support beam is provided with wheel disc brake mounting seats on both sides of the web plate.

[0014] According to the present invention, a bogie frame for a rail vehicle is provided, wherein each of the side beams has two mounting holes, the two mounting holes are respectively located on both sides of the air spring support seat, and two axle disc brake mounting seats are respectively provided on both sides of the crossbeam;

[0015] The wheel disc brake mounting base and the axle disc brake mounting base have the same suspension method.

[0016] According to the present invention, a bogie frame for a rail vehicle is provided, wherein the crossbeam is a box girder, comprising:

[0017] The top cover plate is connected to the two side beams on both sides in the horizontal direction;

[0018] The lower cover plate is connected to the two side beams on both sides in the horizontal direction, and the lower cover plate is located below the upper cover plate;

[0019] An inner vertical plate is provided on the inner periphery of the upper cover plate and the lower cover plate, and the two sides of the inner vertical plate in the vertical direction are respectively connected to the upper cover plate and the lower cover plate to form the center pin installation channel;

[0020] Two outer panels are spaced apart between two side beams. The horizontal sides of each outer panel are connected to the two side beams respectively, and the vertical sides of each outer panel are connected to the upper cover plate and the lower cover plate respectively.

[0021] The inner vertical plate located in the direction from the air spring support to the side beam extends upward to form a transverse stop. A stiffening plate is connected to the side of the transverse stop facing the side beam. The stiffening plate is connected to the upper cover plate. Furthermore, along the direction from the side beam to the air spring support, the upper surface of the stiffening plate gradually approaches the upper cover plate.

[0022] According to the present invention, a bogie frame for a rail vehicle is provided, wherein the inner upright plate is configured as an annular plate, and two sides of the annular plate face away from the two outer upright plates respectively, forming a mounting surface. The two mounting surfaces are respectively provided with traction contact plates for contacting the center pin to transmit traction force and braking force.

[0023] The crossbeam is provided with reinforcing ribs, which are connected between the inner vertical plate and the outer vertical plate. The positions of the reinforcing ribs are adapted to those of the traction contact plate and the stiffening plate.

[0024] According to the present invention, a bogie frame for a rail vehicle is provided, wherein each of the side beams is provided with a vertical shock absorber mounting seat at both ends;

[0025] The lower surface of each side beam is stepped near the end to form at least two mounting platforms of different heights, and each mounting platform is embedded with a spring mounting seat.

[0026] According to a rail vehicle bogie frame provided by the present invention, each of the air spring support seats is provided with an anti-snake-like shock absorber seat on the side away from the crossbeam, and each of the air spring support seats is provided with an anti-roll torsion bar mounting seat on its lower surface.

[0027] The present invention also provides a bogie, including the rail vehicle bogie frame as described above.

[0028] The present invention also provides a rail vehicle, including a car body, wherein the car body is provided with a bogie as described above.

[0029] The rail vehicle bogie frame provided in this invention uses two parallel side beams to connect a crossbeam, fixing the crossbeam between the two side beams. A center pin mounting channel is provided in the middle of the crossbeam for installing the center pin, enabling force transmission. The air spring support is located on the outer side of the side beams, and the wheels are also mounted on the outer side of the two side beams. This shortens the axle length, reduces the weight of the wheelset, and enhances the vehicle's curve handling capability. Due to the shortened axle length, the bending moment on the axle is reduced, allowing for a smaller axle radius and further weight reduction of the frame. This results in a lightweight frame with strong curve handling capability, improving the rail vehicle's running quality and reducing wheel-rail interaction forces. The tread cleaner mounting seat and wheel disc brake mounting seat are integrated into a single connector, and an axle disc brake mounting seat is provided on the crossbeam, achieving both axle disc braking and wheel disc braking while making the frame structure more compact.

[0030] The bogie provided in this embodiment of the invention, by installing the aforementioned rail vehicle bogie frame on the bogie, utilizes two parallel side beams to connect the crossbeam, fixing the crossbeam between the two side beams. A center pin mounting channel is provided in the middle of the crossbeam for installing the center pin, realizing force transmission. The air spring support is located on the outside of the side beam, and the wheels are also mounted on the outside of the two side beams. This can shorten the axle length, reduce the weight of the wheelset, and improve the vehicle's curve handling capability. Based on the shortened axle length, the bending moment on the axle will be reduced, allowing for a smaller axle radius, further reducing the weight of the frame. This gives the frame advantages such as light weight and strong curve handling capability, improving the running quality of the rail vehicle and reducing wheel-rail interaction forces. Integrating the tread cleaner mounting seat and the wheel disc brake mounting seat into a single connector, and providing an axle disc brake mounting seat on the crossbeam, achieves both axle disc braking and wheel disc braking while making the frame structure more compact.

[0031] The rail vehicle provided in this embodiment of the invention, by installing the aforementioned bogie on the car body, uses two parallel side beams to connect the crossbeam, fixing the crossbeam between the two side beams. A center pin mounting channel is provided in the middle of the crossbeam for installing the center pin, realizing force transmission. The air spring support is located on the outside of the side beam, and the wheels are also installed on the outside of the two side beams. This can shorten the axle length, reduce the weight of the wheelset, and improve the vehicle's curve handling ability. Based on the shortened axle length, the bending moment on the axle will be reduced, allowing for a smaller axle radius, further reducing the weight of the frame. This results in a frame with advantages such as light weight and strong curve handling ability, improving the running quality of the rail vehicle and reducing wheel-rail interaction forces. Integrating the tread cleaner mounting seat and the wheel disc brake mounting seat into a single connector, and setting the axle disc brake mounting seat on the crossbeam, achieves both axle disc braking and wheel disc braking while making the frame structure more compact. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is one of the three-dimensional structural schematic diagrams of the rail vehicle bogie frame provided by the present invention;

[0034] Figure 2 This is the second three-dimensional structural schematic diagram of the rail vehicle bogie frame provided by the present invention;

[0035] Figure 3 This is the third three-dimensional structural schematic diagram of the rail vehicle bogie frame provided by the present invention.

[0036] Figure label:

[0037] 10. Side beam; 110. Air vent; 120. Primary vertical shock absorber mounting base; 130. Mounting platform; 140. Primary spring mounting base; 20. Crossbeam; 210. Center pin mounting channel; 220. Upper cover plate; 230. Lower cover plate; 240. Inner vertical plate; 250. Outer vertical plate; 260. Transverse stop seat; 270. Rib plate; 280. Traction contact plate; 290. Reinforcing rib; 2100. Shaft 30. Disc brake mounting base; 310. Air spring support base; 320. First cavity; 330. Air spring cylinder; 340. Mounting channel; 350. Anti-snaking shock absorber base; 460. Anti-roll torsion bar mounting base; 470. Connecting piece; 410. Tread cleaner mounting base; 420. Wheel disc brake mounting base; 430. Connecting base; 440. C-beam; 450. Support beam; 460. Web plate; 470. Ear plate. Detailed Implementation

[0038] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0039] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0041] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] The following is combined with Figures 1-3 This embodiment describes an embodiment of the invention, which provides a bogie frame for a rail vehicle, including two side beams 10, a crossbeam 20, and two air spring support seats 30. The two side beams 10 are arranged in parallel. The crossbeam 20 is located between the two side beams 10, and a center pin mounting channel 210 for connecting a center pin is formed in the middle of the crossbeam 20. The wheels of the rail vehicle are adapted to be mounted on the outer sides of the two side beams 10. Each side beam 10 is provided with a mounting hole, and a connector 40 passes through the mounting hole. The end of the connector 40 is located on the outer side of the side beam 10 and is connected to a tread cleaner mounting seat 410 and a wheel disc brake mounting seat 420. A wheel disc brake mounting seat 2100 is provided on one side of the crossbeam 20, arranged parallel to the length direction of the side beam 10.

[0044] In this embodiment, the crossbeam 20 is connected by two parallel side beams 10, fixing the crossbeam 20 between the two side beams 10. A center pin mounting channel 210 is provided in the middle of the crossbeam 20 for mounting the center pin, thus transmitting force. The air spring support 30 is located on the outside of the side beams 10, and the wheels are also mounted on the outside of the two side beams 10. This can shorten the axle length, reduce the weight of the wheelset, and improve the vehicle's curve handling capability. Based on the shortened axle length, the bending moment on the axle will be reduced, allowing for a smaller axle radius and further reducing the weight of the frame. This results in a frame with advantages such as light weight and strong curve handling capability, improving the running quality of the rail vehicle and reducing wheel-rail interaction forces. The tread cleaner mounting seat 410 and the wheel disc brake mounting seat 420 are integrated into a single connector 40, and an axle disc brake mounting seat 2100 is provided on the crossbeam 20. This achieves both axle disc braking and wheel disc braking while making the frame structure more compact.

[0045] like Figure 1 and Figure 2 As shown, the center pin mounting channel 210 is a square channel, and the side beam 10 is a box beam, which is welded together from several box beams. The cross-section of the middle part of the side beam 10 is larger, while the cross-sections on both sides are smaller, achieving lightweight while meeting strength requirements.

[0046] The end of the connector 40 connects to the tread cleaner mounting seat 410 and the wheel disc brake mounting seat 420 on the outer side of the side beam 10, so as to install the tread cleaner and wheel disc brake on the outer side of the side beam 10, satisfying the requirements of tread cleaning and wheel disc braking. A disc brake mounting seat 2100 is provided on the crossbeam 20 for mounting the disc brake, satisfying the requirements of disc braking. The disc brake mounting is welded to the crossbeam 20, and the disc brake mounting has an internally hollow structure, achieving lightweight while meeting structural strength requirements. The wheel disc brake mounting seat 420 is welded to the connector 40.

[0047] According to the rail vehicle bogie frame provided by the present invention, the air spring support 30 has a hollow interior forming a first cavity 310. An air spring cylinder 320 for mounting an air spring is provided on the upper surface of the air spring support 30, and the air spring cylinder 320 has a mounting channel 330 communicating with the first cavity 310. A second cavity is formed within the side beam 10, and an air hole 110 is constructed on the side of the side beam 10 facing the air spring mounting seat to connect the first cavity 310 and the second cavity, forming an additional air chamber.

[0048] The lower end of the air spring is directly inserted into the mounting channel 330 of the air spring cylinder 320, thereby enabling the air spring to communicate with the first cavity 310. Since the first cavity 310 and the second cavity are interconnected through the air hole 110 to form an additional air chamber, the air spring can operate through this additional air chamber. Because the structure can integrate an additional air chamber, no additional connecting pipes are required.

[0049] Since the side beam 10 is a box beam with a hollow interior, at least two partitions are provided on the inner side of the side beam 10. These partitions cooperate with the inner surface of the side beam 10 to form a second cavity. The position of the second cavity is adapted to the position of the first cavity 310, and the air hole 110 on the side beam 10 is adapted to the position of the second cavity, so as to enable communication between the first cavity 310 and the second cavity through the air hole 110.

[0050] The connector 40 is provided with a connecting seat 430. The cross section of the connecting seat 430 is I-shaped along the height direction of the side beam 10. The connecting seat 430 includes a C-shaped beam 440 and a support beam 450 arranged along the length direction of the side beam 10, and a web plate 460 arranged along the height direction of the side beam 10. The C-shaped beam 440 and the support beam 450 are respectively connected to the upper and lower sides of the web plate 460. The side edges of the C-shaped beam 440 extend outward with ear plates 470. The ear plates 470 are provided with tread cleaner mounting seats 410. The support beam 450 is provided with wheel disc brake mounting seats 420 on both sides of the web plate 460.

[0051] The I-shaped connecting seat 430 has good structural strength, facilitating effective fixation of various mounting seats. The ear plate 470 and the C-shaped beam 440 are integrally formed to reduce welds and ensure structural strength. The tread cleaner mounting seat 410 and the brake mounting seat are integrated into a single connecting seat 430, giving the connecting seat 430 two mounting functions. This satisfies the bogie interface requirements while making the bogie and frame structure more compact and space-efficient.

[0052] Each side beam 10 has two mounting holes, located on both sides of the air spring support 30. Two axle disc brake mounting seats 2100 are provided on both sides of the cross beam 20. Connectors 40 pass through each of the two mounting holes, allowing four connectors 40 to be installed on the frame. The wheel disc brake mounting seat 420 and the axle disc brake mounting seat 2100 have the same hanging method, ensuring a unified interface between the wheel disc brake mounting seat 420 and the axle disc brake mounting, enabling modular production.

[0053] Four connecting pieces 40 are provided with four disc brake mounting seats 420 for connecting the four disc brakes. Correspondingly, two axle disc brake mounting seats 2100 are provided on the front and rear sides of the crossbeam 20 to connect the four axle disc brakes.

[0054] This structural design fully utilizes the space of the side beams 10 within the crossbeam 20, ensuring the side beams 10 are internally mounted while achieving compatibility between two-wheel disc brakes and two-axle disc brakes. The coordinated installation of the wheel disc brake mounting base 420 and the axle disc brake mounting base 2100 enables a four-caliper arrangement on one axle, maximizing braking force for the vehicle.

[0055] like Figure 1 and Figure 2 As shown, the crossbeam 20 is a box girder, welded from steel plates. The steel plates are thin-walled with a large cross-section, making the crossbeam 20 relatively lightweight yet possessing good structural strength. The crossbeam 20 includes an upper cover plate 220, a lower cover plate 230, an inner vertical plate 240, and two outer vertical plates 250. The upper cover plate 220 is connected to two side beams 10 on both sides in the horizontal direction. The lower cover plate 230 is also connected to two side beams 10 on both sides in the horizontal direction, and is located below the upper cover plate 220. The inner vertical plate 240 is located on the inner periphery of the upper cover plate 220 and the lower cover plate 230, and its vertical sides are connected to both the upper cover plate 220 and the lower cover plate 230, forming a center pin mounting channel 210. Two outer vertical plates 250 are spaced apart between two side beams 10. The horizontal sides of each outer vertical plate 250 are connected to the two side beams 10 respectively, and the vertical sides of each outer vertical plate 250 are connected to the upper cover plate 220 and the lower cover plate 230 respectively. Among them, the inner vertical plate 240 located in the direction from the air spring support seat 30 to the side beam 10 extends upward to form a transverse stop seat 260. The side of the transverse stop seat 260 facing the side beam 10 is connected to a stiffening plate 270. The stiffening plate 270 is connected to the upper cover plate 220, and along the direction from the side beam 10 to the air spring support seat 30, the upper surface of the stiffening plate 270 gradually approaches the upper cover plate 220.

[0056] Understandably, both the upper cover plate 220 and the lower cover plate 230 have square holes in their center, and the inner vertical plate 240 is positioned within these square holes, thus forming a center pin mounting channel 210. The upper cover plate 220, the lower cover plate 230, the inner vertical plate 240, and the two outer vertical plates 250 are connected by welding. Furthermore, the upper cover plate 220, the lower cover plate 230, the inner vertical plate 240, and the two outer vertical plates 250 are all thin-walled, large-section steel plates, which allows the resulting crossbeam 20 to be relatively lightweight while still meeting strength requirements.

[0057] The inner vertical plate 240, located in the direction from the air spring support 30 to the side beam 10, extends upward to form a transverse stop 260 for mounting transverse stops. The force applied to the transverse stop 260 is transmitted through the stiffening plate 270, and then to the cross beam 20 and the two side beams 10. The stiffening plate 270 is triangular, and its upper surface gradually approaches the connecting beam, which reduces the weight of the stiffening plate 270 while meeting the force transmission requirements.

[0058] The inner vertical plate 240 is configured as an annular plate, with two sides of the annular plate facing away from the two outer vertical plates 250, forming mounting surfaces. Each mounting surface is provided with a traction contact plate 280 for contacting the center pin to transmit traction and braking forces. The crossbeam 20 contains reinforcing ribs 290, which connect the inner vertical plate 240 and the outer vertical plates 250, and the positions of the reinforcing ribs 290 are adapted to the positions of the traction contact plates 280 and the reinforcing ribs 270.

[0059] Traction contact plates 280 are respectively provided in the front and rear directions of the inner vertical plate 240. When the traction contact plate 280 contacts the center pin, it can transmit braking force and traction force. By setting the traction contact plate 280, there is no need to set the traction tie rod seat on the cross beam 20 or the side beam 10, making the structure of the frame simpler and the function complete.

[0060] The internal reinforcing ribs 290 are used to support the traction contact plate 280 and the stiffening plate 270 in order to withstand the impact of longitudinal forces.

[0061] Each side beam 10 has a vertical shock absorber mounting seat 120 at both ends. The lower surface of each side beam 10 is stepped near the end to form at least two mounting platforms 130 of different heights, and each mounting platform 130 is embedded with a spring mounting seat 140.

[0062] The embedded primary spring mounting bracket 140 avoids damage to the side beam 10, ensuring the integrity of the end face of the side beam 10, guaranteeing the structural strength of the small-section side beam 10, and achieving weight reduction. The primary spring mounting bracket 140 is a single forging with a circular boss for mounting the primary spring. A through hole is provided in the center of the circular boss for removing and adding shims to the primary spring. A vertical damper mounting bracket is used to connect the primary vertical damper to meet its installation requirements.

[0063] Among them, the lower surface of the side beam 10 forms at least two mounting platforms 130 of different heights. Taking the formation of two mounting platforms 130 of different heights as an example, the two mounting platforms 130 can be equipped with two primary spring mounting seats 140, which can install two primary springs, satisfying the double primary spring installation method and realizing double spring installation at different heights.

[0064] Each side beam 10 is also provided with a positioning arm seat on its lower surface for mounting a traction rod to transmit the longitudinal force of the wheelset.

[0065] Each air spring support 30 has an anti-hunting damper seat 340 on the side away from the crossbeam 20, and each air spring support 30 has an anti-roll torsion bar mounting seat 350 on its lower surface. The anti-hunting damper is used to mount the anti-hunting damper, and the anti-roll torsion bar mounting seat 350 is used to mount the anti-roll torsion bar. Figure 2 As shown, the anti-roll torsion bar mount 350 is located at the center of the lower surface of the air spring support 30. In this configuration, the lower part of the center pin does not extend below the crossbeam 20, thus not interfering with the installation of the anti-roll torsion bar.

[0066] On the other hand, the present invention also provides a bogie, including the rail vehicle bogie frame of the foregoing embodiments.

[0067] In this embodiment, two parallel side beams 10 are used to connect the crossbeam 20, fixing the crossbeam 20 between the two side beams 10. A center pin mounting channel 210 is provided in the middle of the crossbeam 20 for mounting the center pin, thus achieving force transmission. The air spring support seat 30 is located on the outside of the side beams 10, and the wheels are also mounted on the outside of the two side beams 10. This can shorten the axle length, reduce the weight of the wheelset, and improve the vehicle's curve handling capability. Based on the shortened axle length, the bending moment on the axle will be reduced, allowing for a smaller axle radius and further reducing the weight of the frame. This results in a frame with advantages such as light weight and strong curve handling capability, improving the running quality of the rail vehicle and reducing wheel-rail interaction forces. The tread cleaner mounting seat 410 and the wheel disc brake mounting seat 420 are integrated into a single connector 40, and an axle disc brake mounting seat 2100 is provided on the crossbeam 20. This achieves both axle disc braking and wheel disc braking while making the frame structure more compact.

[0068] In another aspect, the present invention also provides a rail vehicle, including a car body, the car body being provided with a bogie as described in the foregoing embodiments.

[0069] In this embodiment, two parallel side beams 10 are used to connect the crossbeam 20, fixing the crossbeam 20 between the two side beams 10. A center pin mounting channel 210 is provided in the middle of the crossbeam 20 for mounting the center pin, thus achieving force transmission. The air spring support seat 30 is located on the outside of the side beams 10, and the wheels are also mounted on the outside of the two side beams 10. This can shorten the axle length, reduce the weight of the wheelset, and improve the vehicle's curve handling capability. Based on the shortened axle length, the bending moment on the axle will be reduced, allowing for a smaller axle radius and further reducing the weight of the frame. This results in a frame with advantages such as light weight and strong curve handling capability, improving the running quality of the rail vehicle and reducing wheel-rail interaction forces. The tread cleaner mounting seat 410 and the wheel disc brake mounting seat 420 are integrated into a single connector 40, and an axle disc brake mounting seat 2100 is provided on the crossbeam 20. This achieves both axle disc braking and wheel disc braking while making the frame structure more compact.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bogie frame for rail vehicles, characterized in that, include: Two side beams are arranged in parallel. A crossbeam is located between the two side beams, and a center pin mounting channel for connecting a center pin is formed in the middle of the crossbeam. Two air spring support seats are respectively located on the side of the two side beams away from each other. The air spring support seat is hollow and forms a first cavity. The upper surface of the air spring support seat is provided with an air spring cylinder for installing an air spring. The air spring cylinder forms an installation channel communicating with the first cavity. A second cavity is formed inside the side beam. The side beam facing the air spring support seat has an air hole for connecting the first cavity and the second cavity and forming an additional air chamber. The wheels of the rail vehicle are adapted to be installed on the outer side of the two side beams. Each side beam is provided with a mounting hole. A connector passes through the mounting hole. The end of the connector is located on the outer side of the side beam and is connected to a tread cleaner mounting seat and a wheel disc brake mounting seat. A wheel disc brake mounting seat is provided on one side of the crossbeam along the length direction parallel to the side beam. The crossbeam is a box girder, comprising: an upper cover plate, with its two horizontal sides connected to the two side beams respectively; a lower cover plate, with its two horizontal sides connected to the two side beams respectively, located below the upper cover plate; an inner vertical plate, disposed on the inner periphery of the upper and lower cover plates, with its two vertical sides connected to the upper and lower cover plates respectively, forming the center pin mounting channel; and two outer vertical plates, spaced apart between the two side beams, each outer vertical plate with its two horizontal sides connected to the two side beams respectively, and its two vertical sides connected to the upper and lower cover plates respectively; wherein, the inner vertical plate located in the direction from the air spring support to the side beam extends upward to form a transverse stop, and a stiffener is connected to the side of the transverse stop facing the side beam, the stiffener being connected to the upper cover plate, and the upper surface of the stiffener gradually approaches the upper cover plate along the direction from the side beam to the air spring support.

2. The rail vehicle bogie frame according to claim 1, characterized in that, The connector is provided with a connecting seat. Along the height direction of the side beam, the cross-section of the connecting seat is set to I-shape. The connecting seat includes a C-shaped beam and a support beam arranged along the length direction of the side beam, and a web plate arranged along the height direction of the side beam. The C-shaped beam and the support beam are respectively connected to the upper and lower sides of the web plate. The side edges of the C-shaped beam extend outward with ear plates. The ear plates are provided with the tread cleaner mounting seat. The support beam is provided with the wheel disc brake mounting seat on both sides of the web plate.

3. The rail vehicle bogie frame according to claim 1, characterized in that, Each of the side beams has two mounting holes, which are located on both sides of the air spring support seat. Two shaft disc brake mounting seats are provided on both sides of the crossbeam. The wheel disc brake mounting base and the axle disc brake mounting base have the same suspension method.

4. The rail vehicle bogie frame according to any one of claims 1-3, characterized in that, The inner upright plate is configured as an annular plate, with two sides of the annular plate facing away from the two outer upright plates respectively, forming a mounting surface. The two mounting surfaces are respectively provided with traction contact plates for contacting the center pin to transmit traction force and braking force. The crossbeam is provided with reinforcing ribs, which are connected between the inner vertical plate and the outer vertical plate. The positions of the reinforcing ribs are adapted to those of the traction contact plate and the stiffening plate.

5. The rail vehicle bogie frame according to any one of claims 1-3, characterized in that, Each of the side beams is provided with a vertical shock absorber mounting base at both ends; The lower surface of each side beam is stepped near the end to form at least two mounting platforms of different heights, and each mounting platform is embedded with a spring mounting seat.

6. The rail vehicle bogie frame according to any one of claims 1-3, characterized in that, Each of the air spring support seats is provided with an anti-snake-like shock absorber seat on the side away from the crossbeam, and each of the air spring support seats is provided with an anti-roll torsion bar mounting seat on its lower surface.

7. A bogie, characterized in that, Includes a rail vehicle bogie frame as described in any one of claims 1-6.

8. A rail vehicle, characterized in that, Includes a vehicle body, wherein the vehicle body is provided with a bogie as described in claim 7.

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