Bogie frame, bogie and railway vehicle

Abstract

The present application relates to the field of rail vehicle technology, and provides a bogie frame, a bogie and a rail vehicle. The bogie frame comprises a box beam, a load bearing beam, an inner vertical plate, an outer vertical plate, a load bearing bottom plate, a load bearing top plate and a leaf spring. The box beam is hollow inside and forms mounting channels. The load bearing beam is arranged on the box beam. The inner vertical plate is curved and connected to the load bearing beam by welding to form a kingpin channel. The outer vertical plate is connected to the box beam by welding. The load bearing bottom plate is connected to the box beam, the inner vertical plate and the outer vertical plate by welding. The load bearing top plate is arranged above the load bearing top plate. The top of the box beam is open. The load bearing top plate extends above the box beam and is connected by welding to close the top opening. The load bearing top plate is also connected to the load bearing beam, the inner vertical plate and the outer vertical plate by welding. The leaf spring is mounted in the mounting channel. The leaf spring extends along the longitudinal direction of the box beam. The two ends of the leaf spring are provided with pads for connecting to wheelset shaft sleeves. The present application has the characteristics of simple structure, high strength and convenient forming.

Description

Technical Field

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

[0002] Rail vehicles are widely used in daily travel, and lightweight design is a key research direction for rail vehicles. The current bogie frame adopts the structure of crossbeams and side beams. This structure has reached its limit in terms of weight optimization. Therefore, there is an urgent need for a new structure of bogie frame to further reduce the weight of the bogie. Summary of the Invention

[0003] This invention provides a steering frame to solve the technical problem that it is difficult to optimize the weight of the frame in the prior art, and to achieve a lightweight design of the frame.

[0004] The present invention also provides a bogie.

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

[0006] This invention provides a steering architecture, comprising:

[0007] Two box girders are arranged at intervals and in parallel, and each box girder is hollow inside and forms an installation channel;

[0008] Two load-bearing beams are respectively located on one side of the two box beams facing each other;

[0009] Two inner vertical plates are disposed between the two box beams. The two inner vertical plates are bent in a direction away from each other, and each inner vertical plate is welded to the two load-bearing beams to form a central pin channel.

[0010] Two outer vertical panels are disposed between the two box beams, and the two sides of each outer vertical panel are welded to the two box beams respectively;

[0011] Two load-bearing base plates are disposed between the two box beams, and each load-bearing base plate is welded to the two box beams, the inner vertical plate and the outer vertical plate respectively;

[0012] A load-bearing top plate is located above the load-bearing top plate. Each of the box beams has an opening at the top. The load-bearing top plate extends above the box beams and is welded to them to close the top openings. Furthermore, the load-bearing top plate is also welded to the load-bearing beams, the inner vertical plate, and the outer vertical plate.

[0013] Two leaf springs are respectively installed in the two mounting channels. The leaf springs extend longitudinally along the box beam, and each leaf spring has a pad at both ends for connecting the wheelset bushing.

[0014] According to a bogie frame provided by the present invention, two air spring mounting seats are provided at intervals on the upper surface of the load-bearing top plate, and the two air spring mounting seats are respectively located above the two box beams;

[0015] The air spring mounting base is provided with a mounting protrusion that protrudes outward in the direction opposite to the bearing top plate, and the distance between the two air spring mounting bases is adapted to the distance between the two leaf springs.

[0016] According to a steering frame provided by the present invention, a leaf spring positioning part is formed on the lower surface of the supporting top plate, the leaf spring positioning part is located in the mounting channel, wherein a connecting block is provided on the upper surface of the leaf spring, one of the leaf spring positioning part and the connecting block is configured with a concave mounting groove, and the other of the leaf spring positioning part and the connecting block is configured with an outward protrusion, the protrusion being adapted to engage with the mounting groove, and the protrusion and the mounting groove are respectively configured as matching cross shapes.

[0017] According to a bogie frame provided by the present invention, each of the box beams has a process hole on its lower surface for forming the protrusion or the mounting groove through the process hole.

[0018] According to a bogie frame provided by the present invention, at least two U-shaped reinforcing ribs with upward openings are provided at intervals inside the box beam, wherein the two U-shaped reinforcing ribs are respectively located at the openings on both sides of the mounting channel, and the two U-shaped reinforcing ribs are respectively connected to positioning swing arm seats on the side away from each other.

[0019] According to a bogie frame provided by the present invention, the box beam is provided with an anti-snake-like shock absorber seat and an anti-roll torsion bar seat on the side away from the inner vertical plate;

[0020] The lower surface of each of the bearing base plates is provided with a traction rod seat and a transverse shock absorber mounting seat. The traction rod seat and the transverse shock absorber mounting seat provided on each of the bearing base plates are centrally symmetrically distributed along the center of the central pin channel.

[0021] The top support plate is equipped with a motor hanger and forms a motor mounting point. The motor hanger extends toward the bottom support plate and is flush with the bottom support plate.

[0022] Each of the aforementioned load-bearing beams extends toward the central pin channel and is connected to a transverse stop mounting seat.

[0023] According to a steering frame provided by the present invention, the leaf spring includes:

[0024] A carbon fiber top plate extends longitudinally along the box girder, and the carbon fiber top plate is configured as an arc shape;

[0025] A carbon fiber base plate extends longitudinally along the box girder. The carbon fiber base plate is arc-shaped and located below the carbon fiber top plate. The bending directions of the carbon fiber base plate and the carbon fiber top plate are on the same side. The arc of the carbon fiber base plate is greater than that of the carbon fiber top plate, and the thickness of the carbon fiber base plate is less than that of the carbon fiber top plate.

[0026] Multiple carbon fiber vertical plates are arranged vertically and side by side between the carbon fiber top plate and the carbon fiber bottom plate, and the multiple carbon fiber vertical plates are sequentially attached to each other;

[0027] The carbon fiber top plate and the carbon fiber bottom plate are arranged unidirectionally along the longitudinal direction, while the carbon fiber vertical plate is arranged bidirectionally and crosswise. The angle between the direction of the carbon fiber vertical plate and the horizontal plane is 45 degrees.

[0028] According to a steering frame provided by the present invention, the upper surface of the pad is adapted to the lower surface of the carbon fiber base plate, and hooks extend upward from both sides of each pad, the hooks being adapted to be attached to the upper surface of the carbon fiber top plate.

[0029] The present invention also provides a bogie, including the bogie frame as described above.

[0030] The present invention also provides a rail vehicle, including a center pin, a car body and a bogie as described above, the bogie being connected to the car body via a spring, and the center pin passing through the center pin channel and being connected to the car body via a traction rod.

[0031] The bogie frame provided in this invention consists of a box beam, a load-bearing beam, an inner vertical plate, an outer vertical plate, a load-bearing bottom plate, and a load-bearing top plate forming the main load-bearing structure. The main load-bearing structure and leaf springs replace the original crossbeams and side beams. The main load-bearing structure is welded and has the characteristics of simple structure, high strength, and convenient forming. The structure of the leaf springs also makes the weight of the leaf springs much less than that of the traditional side beams, resulting in a significant lightweight effect for the frame.

[0032] The bogie provided in this embodiment of the invention uses the aforementioned bogie frame, which comprises a main load-bearing structure consisting of a box beam, a load-bearing beam, an inner vertical plate, an outer vertical plate, a load-bearing bottom plate, and a load-bearing top plate. The main load-bearing structure and leaf springs replace the original crossbeams and side beams. The main load-bearing structure is welded and has the characteristics of simple structure, high strength, and convenient molding. The structure of the leaf springs also makes the weight of the leaf springs much smaller than that of the traditional side beams, resulting in a significant lightweight effect of the frame.

[0033] The rail vehicle provided in this embodiment of the invention has a bogie connected to the car body via air springs. The center pin passes through the center pin channel and is connected to the car body via a traction rod. The bogie adopts the aforementioned bogie frame, which uses a box beam, load-bearing beam, inner vertical plate, outer vertical plate, load-bearing bottom plate, and load-bearing top plate to form the main load-bearing structure. The main load-bearing structure and leaf springs replace the original crossbeams and side beams. The main load-bearing structure is welded and has the characteristics of simple structure, high strength, and convenient molding. The structure of the leaf springs also makes the weight of the leaf springs much smaller than that of the traditional side beams, resulting in a significant lightweight effect of the frame. Attached Figure Description

[0034] 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.

[0035] Figure 1 This is one of the three-dimensional structural schematic diagrams of the bogie frame provided by the present invention;

[0036] Figure 2 This is the second three-dimensional structural schematic diagram of the bogie frame provided by the present invention;

[0037] Figure 3 This is a bottom view of the steering frame provided by the present invention;

[0038] Figure 4 This is a partial structural schematic diagram of the steering frame provided by the present invention;

[0039] Figure 5 This is a three-dimensional structural diagram of the leaf spring provided by the present invention.

[0040] Figure label:

[0041] 110. Box girder; 1110. Process hole; 1120. U-shaped reinforcing rib; 1130. Positioning swing arm seat; 1140. Anti-snake-like shock absorber seat; 1150. Anti-roll torsion bar seat; 120. Load-bearing beam; 1210. Lateral stop mounting seat; 130. Inner vertical plate; 140. Outer vertical plate; 150. Load-bearing bottom plate; 1510. Traction rod seat; 1520. Lateral shock absorber mounting seat; 160. Load-bearing top plate; 1610. Motor hanger; 170. Installation channel; 180. Center pin channel; 200. Leaf spring; 210. Connecting block; 220. Mounting groove; 230. Carbon fiber top plate; 240. Carbon fiber bottom plate; 250. Carbon fiber vertical plate; 260. Pad block; 300. Air spring mounting seat; 310. Mounting protrusion; 320. Leaf spring positioning part; 330. Protrusion. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] The following is combined Figures 1-5 Embodiments of the present invention are described.

[0048] This embodiment provides a bogie frame, including two box beams 110, two load-bearing beams 120, two inner vertical plates 130, two outer vertical plates 140, two load-bearing bottom plates 150, a load-bearing top plate 160, and two leaf springs 200. The two box beams 110 are spaced apart and parallel, each box beam 110 being hollow and forming an installation channel 170. The two load-bearing beams 120 are respectively located on one side of the two box beams 110 facing each other. The two inner vertical plates 130 are located between the two box beams 110, and are bent away from each other. Each inner vertical plate 130 is welded to one of the two load-bearing beams 120 to form a central pin channel 180. The two outer vertical plates 140 are located between the two box beams 110, and both sides of each outer vertical plate 140 are welded to one of the two box beams 110. Two load-bearing base plates 150 are disposed between two box beams 110, and each load-bearing base plate 150 is welded to the two box beams 110, the inner vertical plate 130, and the outer vertical plate 140, respectively. A load-bearing top plate 160 is located above the load-bearing top plate 160. Each box beam 110 has an opening at the top, and the load-bearing top plate 160 extends above the box beam 110 and is welded to it to close the top opening. Furthermore, the load-bearing top plate 160 is also welded to the load-bearing beam 120, the inner vertical plate 130, and the outer vertical plate 140. Two leaf springs 200 are respectively installed in two mounting channels 170. The leaf springs 200 extend longitudinally along the box beam 110, and each end of the leaf spring 200 is provided with a pad 260 for connecting the wheelset bushing.

[0049] In this embodiment, the main load-bearing structure is composed of box beam 110, load-bearing beam 120, inner vertical plate 130, outer vertical plate 140, load-bearing bottom plate 150 and load-bearing top plate 160. The main load-bearing structure and leaf spring 200 replace the original crossbeam and side beam structure. The main load-bearing structure is welded and has the characteristics of simple structure, high strength and convenient molding. The structural form of leaf spring 200 also makes the weight of leaf spring 200 much less than that of traditional side beams, so that the lightweight effect of the frame is obvious.

[0050] The box girder 110, load-bearing beam 120, inner vertical plate 130, outer vertical plate 140, load-bearing bottom plate 150, and load-bearing top plate 160 are welded together, allowing for independent processing and structural design of their shapes. This enables the rational planning of plate thickness and beam width based on their respective load-bearing requirements, ensuring both lightweight design and strength requirements are met. After the box girder 110, load-bearing beam 120, inner vertical plate 130, outer vertical plate 140, load-bearing bottom plate 150, and load-bearing top plate 160 are individually processed, they are then welded together by a welding mechanism to form the main load-bearing structure.

[0051] The box girder 110 has a hollow internal structure. An installation channel 170 is provided longitudinally inside the box girder 110, allowing the leaf spring 200 to be installed within the installation channel 170 and arranged longitudinally along the box girder 110. This allows the leaf spring 200 to replace the original side beam structure. The leaf spring 200 is made of carbon fiber, which has advantages such as high strength, light weight, and ease of processing, thus meeting the lightweight design requirements of the frame.

[0052] like Figure 4 As shown, each load-bearing beam 120 includes two beams arranged in a V-shape, positioned close to each other along the direction from the box girder 110 to the central pin channel 180. The inner and outer vertical plates 130 and 140 are located on the inner and outer sides, respectively, ensuring that the inner and outer sides of the load-bearing bottom plate 150 and load-bearing top plate 160 are closed, while also providing load-bearing capacity. Both the inner and outer vertical plates 130 and 140 are arranged in an arc shape, with the inner plates 130 curving away from each other and the outer plates 140 curving away from the inner plates 130. This design optimizes the shape of the inner and outer vertical plates 130, achieving lightweight design while enhancing the aesthetics of the structure and meeting load-bearing requirements.

[0053] like Figure 1As shown, two air spring mounting seats 300 are spaced apart on the upper surface of the supporting top plate 160, and the two air spring mounting seats 300 are respectively located above the two box beams 110. Among them, the air spring mounting seats 300 have mounting protrusions 310 protruding outward in the direction away from the supporting top plate 160, and the spacing between the two air spring mounting seats 300 is adapted to the spacing between the two leaf springs 200.

[0054] The air spring mounting base 300 is used to connect the air spring. The air spring mounting base 300 has a mounting protrusion 310 protruding outwards from the direction opposite to the leaf spring 200. The air spring has a groove corresponding to the mounting protrusion 310. When installing the air spring, aligning the groove of the air spring with the mounting protrusion 310 achieves proper positioning and installation. Compared to the traditional method of inserting the air spring into the mounting base, this method prevents the air spring from being inserted into the mounting channel 170, thus preventing damage to the leaf spring 200 within the mounting channel 170.

[0055] The spacing between the two air spring mounting seats 300 is adapted to the spacing between the two leaf springs 200. Specifically, the spacing between the two air spring mounting seats 300 is the same as the spacing between the two leaf springs 200 to avoid generating additional torque on the leaf springs 200.

[0056] like Figure 3 and Figure 5 As shown, a leaf spring 200 positioning part is formed on the lower surface of the supporting top plate 160. The leaf spring 200 positioning part is located in the mounting channel 170. The upper surface of the leaf spring 200 is provided with a connecting block 210. One of the leaf spring 200 positioning part and the connecting block 210 is constructed with a concave mounting groove 220. The other of the leaf spring 200 positioning part and the connecting block 210 is constructed with an outward protrusion 330. The protrusion 330 is adapted to be engaged with the mounting groove 220. The protrusion 330 and the mounting groove 220 are respectively configured as matching cross shapes.

[0057] The mounting groove 220 on the leaf spring 200 mounting part and the protrusion 330 on the connecting block 210 cooperate with each other to achieve the positioning and installation of the leaf spring 200. The protrusion 330 and the mounting groove 220 are respectively set as matching cross shapes to achieve the longitudinal and lateral limiting functions of the leaf spring 200. Specifically, the leaf spring 200 mounting part is constructed with a cross-shaped protrusion 330, and the connecting block 210 is constructed with a cross-shaped mounting groove 220.

[0058] like Figure 2As shown, each box girder 110 has a process hole 1110 on its lower surface, which is used to form a protrusion 330 or a mounting groove 220. The process hole 1110 facilitates the formation of a cross-shaped protrusion 330 on the leaf spring 200 mounting portion after welding, enabling assembly between the leaf spring 200 and the mounting channel 170. Forming the cross-shaped protrusion 330 after welding ensures the accuracy of the mounting point, avoiding inaccurate positioning of the leaf spring 200 caused by forming the cross-shaped protrusion 330 before welding the box girder 110.

[0059] like Figure 4 As shown, at least two U-shaped reinforcing ribs 1120 with upward openings are provided at intervals inside the box girder 110. The two U-shaped reinforcing ribs 1120 are located at the openings on both sides of the installation channel 170, and the two U-shaped reinforcing ribs 1120 are respectively connected to the positioning swing arm seat 1130 on the side away from each other.

[0060] The U-shaped reinforcing ribs 1120 can structurally strengthen the interior of the box girder 110, thereby improving the structural strength of the box girder 110. At least two U-shaped reinforcing ribs 1120 are arranged longitudinally at intervals inside the box girder 110 to provide structural reinforcement at multiple locations. The two U-shaped reinforcing ribs 1120 are respectively connected to positioning swing arm seats 1130 on the side away from each other to install trapezoidal groove positioning swing arms.

[0061] On the side of the box girder 110 away from the inner vertical plate 130, there are respectively an anti-snake damper seat 1140 and an anti-roll torsion bar seat 1150, so as to connect the anti-snake damper and the anti-roll torsion bar respectively.

[0062] Each load-bearing base plate 150 has a traction rod seat 1510 and a lateral shock absorber mounting seat 1520 on its lower surface. The traction rod seat 1510 and the lateral shock absorber mounting seat 1520 are centrally symmetrically distributed along the center of the center pin channel 180 on each load-bearing base plate 150 to connect the traction rod and the lateral shock absorber, respectively.

[0063] The top support plate 160 is provided with a motor hanger 1610, forming a motor mounting point. The motor hanger 1610 extends towards the bottom support plate 150 and is flush with the bottom support plate 150. The motor mounting point formed by the motor hanger 1610 is used to connect the motor hanger rod, thereby fixing the motor.

[0064] Each load-bearing beam 120 extends toward the central pin channel 180 and is connected to a transverse stop mounting seat 1210 to achieve transverse stopping.

[0065] like Figure 5As shown, the leaf spring 200 includes a carbon fiber top plate 230, a carbon fiber bottom plate 240, and multiple carbon fiber vertical plates 250. The carbon fiber top plate 230 extends longitudinally along the box girder 110 and is curved. The carbon fiber bottom plate 240 extends longitudinally along the box girder 110 and is also curved. The bottom plate 240 is located below the top plate 230, and the bending directions of the bottom plate 240 and the top plate 230 are towards the same side. The curvature of the bottom plate 240 is greater than that of the top plate 230, and the thickness of the bottom plate 240 is less than that of the top plate 230. Multiple carbon fiber vertical plates 250 are arranged vertically and side by side between the top plate 230 and the bottom plate 240, and are sequentially attached to each other. Among them, the carbon fiber of the carbon fiber top plate 230 and the carbon fiber bottom plate 240 are arranged in a single longitudinal direction, while the carbon fiber of the carbon fiber vertical plate 250 is arranged in a bidirectional cross direction, and the carbon fiber direction of the carbon fiber vertical plate 250 is at an angle of 45 degrees with the horizontal plane.

[0066] The carbon fiber top plate 230, carbon fiber bottom plate 240, and multiple carbon fiber vertical plates 250 constitute the carbon fiber leaf spring 200, thereby reducing the weight of the leaf spring 200 and facilitating the weight reduction of the frame. The curved carbon fiber top plate 230 and the curved carbon fiber bottom plate 240 both enhance the load-bearing capacity of the leaf spring 200. The bending directions of the carbon fiber bottom plate 240 and the carbon fiber top plate 230 are towards the same side, and the curvature of the carbon fiber bottom plate 240 is greater than that of the carbon fiber top plate 230, so that both the upper carbon fiber top plate 230 and the lower carbon fiber bottom plate 240 can withstand compression.

[0067] The thickness of the carbon fiber base plate 240 is less than the thickness of the carbon fiber top plate 230, so that the upper carbon fiber top plate 230 and the lower carbon fiber base plate 240 can withstand pressure.

[0068] Multiple carbon fiber vertical plates 250 are vertically and side-by-side between the carbon fiber top plate 230 and the carbon fiber bottom plate 240, with the plates sequentially attached to each other. The number of carbon fiber vertical plates 250 can be selected based on actual stiffness requirements. In this embodiment, 10 carbon fiber vertical plates 250 are used.

[0069] In this design, the carbon fiber top plate 230 and carbon fiber bottom plate 240 have carbon fibers arranged unidirectionally along the longitudinal direction, while the carbon fiber vertical plate 250 has carbon fibers arranged in a bidirectional cross pattern. Furthermore, the angle between the direction of the carbon fiber vertical plate 250 and the horizontal plane is 45 degrees. This unique carbon fiber arrangement ensures both the strength and lightweight design of the leaf spring 200.

[0070] The upper surface of the pad 260 is adapted to the lower surface of the carbon fiber base plate 240. Each pad 260 has hooks extending upwards on both sides. The hooks are suitable for hanging on the upper surface of the carbon fiber top plate 230. By fixing the pad 260 by hooking, the longitudinal and lateral forces of the pad 260 are not constrained. Specifically, the pad 260 is a rubber block.

[0071] On the other hand, the present invention also provides a bogie, including the bogie frame in the foregoing embodiments.

[0072] In this embodiment, by using the aforementioned bogie frame, the main load-bearing structure is formed by box beam 110, load-bearing beam 120, inner vertical plate 130, outer vertical plate 140, load-bearing bottom plate 150 and load-bearing top plate 160. The main load-bearing structure and leaf spring 200 replace the original crossbeam and side beam structure. The main load-bearing structure is welded and has the characteristics of simple structure, high strength and convenient molding. The structural form of leaf spring 200 also makes the weight of leaf spring 200 much less than the weight of traditional side beam, so that the lightweight effect of the frame is obvious.

[0073] In another aspect, the present invention also provides a rail vehicle, including a center pin, a car body and a bogie as described in the foregoing embodiment, wherein the bogie is connected to the car body by a spring, and the center pin passes through a center pin channel 180 and is connected to the car body by a traction rod.

[0074] In this embodiment, the bogie is connected to the car body via air springs. The center pin passes through the center pin channel 180 and is connected to the car body via a traction rod. The bogie adopts the aforementioned bogie frame, which uses a box beam 110, a load-bearing beam 120, an inner vertical plate 130, an outer vertical plate 140, a load-bearing bottom plate 150, and a load-bearing top plate 160 to form the main load-bearing structure. The main load-bearing structure and leaf springs 200 replace the original crossbeams and side beams. The main load-bearing structure is welded and has the characteristics of simple structure, high strength, and convenient molding. The structural form of the leaf springs 200 also makes the weight of the leaf springs 200 much smaller than that of traditional side beams, resulting in a significant lightweight effect of the frame.

[0075] 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, characterized in that, The utility model relates to a box type beam, load bearing beam, inner vertical plate, outer vertical plate, load bearing bottom plate and load bearing top plate form a main body load bearing structure, and the main body load bearing structure is formed by welding. The upper surface of the load bearing top plate is provided with two air spring mounting seats, and the two air spring mounting seats are located above the two box type beams. The lower surface of the load bearing top plate is provided with a plate spring positioning part in the mounting channel. The lower surface of each box type beam is provided with a process hole for processing the protruding part or the mounting groove. The box type beam is provided with at least two U-shaped reinforcing ribs with openings facing upward. The side of the box type beam away from the inner vertical plate is provided with a snakelike damper seat and a lateral roll torsion bar seat. The lower surface of each load bearing bottom plate is provided with a traction pull rod seat and a transverse damper mounting seat, which are centrally symmetrically distributed along the center of the center pin channel. The load bearing top plate is provided with a motor hanging seat and forms a motor mounting hanging point. The motor hanging seat extends towards the load bearing bottom plate and is flush with the load bearing bottom plate.

2. The truck frame of claim 1, wherein ​ ​ 3. The truck frame of claim 1, wherein ​ 4. The truck frame of claim 3, wherein ​ 5. The truck frame of claim 1 wherein, ​ 6. The truck frame of claim 1 wherein, ​ ​ ​ Each of the load bearing beams extends in a direction towards the center pin passage and is connected with a transverse stop mounting seat.

7. The bogie frame according to any one of claims 1 to 6, characterized in that The leaf spring comprises: A carbon fiber top plate extending in a longitudinal direction of the box beam, the carbon fiber top plate being arranged in an arc shape; A carbon fiber bottom plate extending in a longitudinal direction of the box beam, the carbon fiber bottom plate being arranged in an arc shape, the carbon fiber bottom plate being located below the carbon fiber top plate, and the bending directions of the carbon fiber top plate and the carbon fiber bottom plate being towards the same side, the curvature of the carbon fiber bottom plate being greater than the curvature of the carbon fiber top plate, and the thickness of the carbon fiber bottom plate being less than the thickness of the carbon fiber top plate; A plurality of carbon fiber vertical plates vertically and side by side arranged between the carbon fiber top plate and the carbon fiber bottom plate, the plurality of carbon fiber vertical plates being sequentially attached to each other; The carbon fibers of the carbon fiber top plate and the carbon fiber bottom plate are arranged in a longitudinal unidirectional manner, the carbon fibers of the carbon fiber vertical plates are arranged in a bidirectional cross manner, and the angle between the carbon fibers of the carbon fiber vertical plates and a horizontal plane is 45 degrees.

8. The truck frame of claim 7, wherein, The upper surface of the cushion block is matched with the lower surface of the carbon fiber bottom plate, and both sides of each of the cushion blocks extend upwardly with a hook, the hook being adapted to be hung on the upper surface of the carbon fiber top plate.

9. A bogie, characterized by The bogie frame comprises the center pin, the car body and the bogie frame as claimed in claim 9.

10. A rail vehicle, characterized by The bogie comprises the center pin, the car body and the bogie as claimed in claim 9, the bogie being connected with the car body through air springs, the center pin passing through the center pin passage and being connected with the car body through traction rods.

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