Bogie frame, bogie and rail vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a bogie frame, a bogie and a railway vehicle. The bogie frame comprises a bearing main body and two plate springs, the bearing main body is integrally cast and formed by adopting a high-strength casting material, the bearing main body comprises two C-shaped beams which are oppositely arranged and two wing-shaped beams which are oppositely arranged and arranged between the two C-shaped beams, the two wing-shaped beams are respectively provided with a mounting channel, and the two wing-shaped beams are arranged in the mounting channel. The two C-shaped beams and the two wing-shaped beams jointly define a center pin channel used for installing a center pin. The two plate springs are installed on the two installation channels respectively and extend in the longitudinal direction of the bearing body, and the two ends of each plate spring are provided with cushion blocks used for being connected with a wheel set shaft sleeve respectively. The bearing body can be rapidly formed, the high strength mass ratio can be achieved, and meanwhile the welding defect of the framework can be avoided. The bearing body is simple in structure, the weight of the plate spring is far smaller than that of a traditional side beam due to the structural form of the plate spring, and the lightweight effect of the framework is obvious.

Description

Technical Field

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

[0002] Rail vehicles are widely used in daily travel, and lightweight design is a key research direction of rail vehicles. The current bogie frames all adopt the structure of crossbeams and side beams. Such a structure has reached saturation in weight optimization. Therefore, a new structure of bogie frame is urgently needed to further reduce the weight of the bogie. Summary of the invention

[0003] The present invention provides a bogie frame to achieve a lightweight design of a rail vehicle.

[0004] The invention also provides a bogie.

[0005] The invention also provides a rail vehicle.

[0006] The present invention provides a bogie frame, comprising:

[0007] The bearing body is integrally cast and includes two C-shaped beams disposed opposite to each other and two wing-shaped beams disposed opposite to each other between the two C-shaped beams, wherein the two wing-shaped beams are respectively configured with mounting channels, wherein the two C-shaped beams and the two wing-shaped beams are jointly enclosed to form a center pin channel for mounting a center pin;

[0008] Two leaf springs are respectively installed in the two installation channels, and the leaf springs extend in the longitudinal direction of the bearing body. Both ends of each leaf spring are respectively provided with a pad for connecting the wheelset sleeve.

[0009] According to a bogie frame provided by the present invention, the wing beam comprises:

[0010] A bottom beam, both ends of which are connected to the ends of the two C-shaped beams respectively, and a support is extended from the middle of the bottom beam in the direction away from the center pin channel;

[0011] A top beam, located between the two C-shaped beams, one end of the top beam is bent downward to form a bent portion, the bent portion is connected to the support, and the other end of the top beam extends in the lateral direction of the bearing body and is respectively connected to the two ends of the bottom beam through two connecting beams;

[0012] Wherein, the bottom beam, the top beam and the bent portion together enclose the installation channel.

[0013] According to a bogie frame provided by the present invention, one end of each of the bottom beams extends in a direction away from the C-shaped beam and forms a wing plate, and an anti-roll torsion bar seat is configured at the end of the wing plate;

[0014] An anti-rolling load transfer beam is provided below each of the C-shaped beams, and two ends of each of the anti-rolling load transfer beams are connected to two ends of the C-shaped beam or the two bottom beams respectively;

[0015] The anti-roll load transfer beam close to the wing panel is bent toward the C-shaped beam, and the anti-roll load transfer beam far from the wing panel is bent away from the C-shaped beam.

[0016] According to a bogie frame provided by the present invention, the lower surface of the bottom beam and the lower surface of the anti-roll load transfer beam are respectively provided with load transfer ribs, each of the load transfer ribs is respectively distributed along the length direction of the bottom beam and the anti-roll load transfer beam, and each of the load transfer ribs is respectively connected to the bottom beam and the anti-roll load transfer beam in a T-shape;

[0017] The upper surface of each of the top beams is provided with reinforcing ribs, each of the reinforcing ribs is distributed along the length direction of the top beam, and each of the reinforcing ribs is connected to the top beam in a T-shape.

[0018] According to a bogie frame provided by the present invention, an upper surface of each of the top beams is provided with an empty spring mounting seat, and the empty spring mounting seat is located above the mounting channel;

[0019] Wherein, the empty spring mounting seat is provided with a mounting protrusion protruding outward in the direction away from the leaf spring, and the distance between the two empty spring mounting seats is adapted to the distance between the two leaf springs.

[0020] According to a bogie frame provided by the present invention, a leaf spring positioning portion is formed on the lower surface of each of the top beams, a connecting block is provided on the upper surface of the leaf spring, one of the leaf spring positioning portion and the connecting block is configured with an inwardly concave mounting groove, and the other of the leaf spring positioning portion and the connecting block is configured with an outwardly convex protrusion, the protrusion is suitable for being snapped into the mounting groove, and the protrusion and the mounting groove are respectively arranged to be matching cross shapes.

[0021] According to a bogie frame provided by the present invention, each of the top beams is respectively provided with a motor mounting suspension point;

[0022] Each of the top beams extends toward the direction of the center pin channel and is connected to a transverse stop mounting seat;

[0023] An anti-snake shock absorber seat is constructed on one side of each of the bent portions away from the installation channel;

[0024] Both ends of each bottom beam are respectively connected with a positioning rotating arm seat;

[0025] A traction rod seat is respectively provided on the lower surface of each of the anti-roll load transfer beams.

[0026] According to a bogie frame provided by the present invention, the leaf spring comprises:

[0027] A carbon fiber top plate extending in the longitudinal direction of the bearing body, wherein the carbon fiber top plate is arranged in an arc shape;

[0028] A carbon fiber bottom plate extending in the longitudinal direction of the bearing body, 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 bottom plate and the carbon fiber top plate facing the same side, the curvature of the carbon fiber bottom plate being greater than that of the carbon fiber top plate, and the thickness of the carbon fiber bottom plate being less than that of the carbon fiber top plate;

[0029] A plurality of carbon fiber vertical plates are vertically and side by side arranged between the carbon fiber top plate and the carbon fiber bottom plate, and the plurality of carbon fiber vertical plates are sequentially attached to each other;

[0030] The carbon fibers of the carbon fiber top plate and the carbon fiber bottom plate are arranged unidirectionally in the longitudinal direction, the carbon fibers of the carbon fiber vertical plate are arranged bidirectionally and crosswise, and the angle between the carbon fiber direction of the carbon fiber vertical plate and the horizontal plane is 45 degrees;

[0031] The upper surface of the pad is matched with the lower surface of the carbon fiber bottom plate, and hooks are respectively extended upward on both sides of each pad, and the hooks are suitable for being hung on the upper surface of the carbon fiber top plate.

[0032] The present invention also provides a bogie, comprising the bogie frame as described above.

[0033] The present invention also provides a rail vehicle, comprising a center pin, a car body and a bogie as described above, wherein the bogie is connected to the car body via an empty spring, and the center pin passes through the center pin channel and is connected to the car body via a traction rod.

[0034] The bogie frame provided by the embodiment of the present invention replaces the original cross beam and side beam structure with a load-bearing body and a leaf spring. The load-bearing body is integrally cast using a high-strength casting material, so that the load-bearing body can be quickly formed and a high strength-to-weight ratio can be achieved, while also avoiding the generation of frame welding defects. The structure of the load-bearing body is simple, and the structural form of the leaf spring also makes the weight of the leaf spring much less than the weight of the traditional side beam, making the frame lightweight.

[0035] The bogie provided by the embodiment of the present invention uses the aforementioned bogie frame, and uses the load-bearing body and leaf springs to replace the original cross beam and side beam structure. The load-bearing body is integrally cast using high-strength casting materials, so that the load-bearing body can be quickly formed and can achieve a high strength-to-weight ratio, while also avoiding the occurrence of frame welding defects. The structure of the load-bearing body is simple, and the structural form of the leaf spring also makes the weight of the leaf spring much less than the weight of the traditional side beam, making the frame lightweight.

[0036] In the rail vehicle provided by the embodiment of the present invention, the bogie is connected to the car body through an empty spring, the center pin passes through the center pin channel and is connected to the car body through a traction rod, the bogie adopts the aforementioned bogie frame, and the original cross beam and side beam structure are replaced by a load-bearing body and a leaf spring. The load-bearing body is integrally cast using high-strength casting materials, so that the load-bearing body can be quickly formed and can achieve a high strength-to-weight ratio, while also avoiding the occurrence of frame welding defects. The structure of the load-bearing body is simple, and the structural form of the leaf spring also makes the weight of the leaf spring much less than the weight of the traditional side beam, making the frame lightweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is one of the three-dimensional structural schematic diagrams of the bogie frame provided by the present invention;

[0039] Figure 2 This is the second schematic diagram of the three-dimensional structure of the bogie frame provided by the present invention;

[0040] Figure 3 It is a schematic diagram of the three-dimensional structure of the bearing body provided by the present invention;

[0041] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the bearing body provided by the present invention;

[0042] Figure 5 It is a schematic diagram of the three-dimensional structure of the leaf spring provided by the present invention.

[0043] Reference numerals:

[0044] 100, load-bearing body; 110, C-shaped beam; 1110, anti-roll load transfer beam; 120, wing beam; 1210, bottom beam; 1220, support; 1230, top beam; 1240, bending part; 1250, connecting beam; 1260, wing plate; 1270, anti-roll torsion bar seat; 1280, load transfer rib; 1290, reinforcing rib; 130, installation channel; 140, center pin channel; 200, leaf spring; 21 0. Pad; 220. Connecting block; 230. Mounting groove; 240. Carbon fiber top plate; 250. Carbon fiber bottom plate; 260. Carbon fiber vertical plate; 270. Hook; 300. Empty spring mounting seat; 310. Mounting protrusion; 400. Leaf spring positioning portion; 410. Protrusion; 500. Motor mounting hanging point; 600. Anti-snake shock absorber seat; 700. Positioning swing arm seat; 800. Traction rod seat; 900. Horizontal stop mounting seat. DETAILED DESCRIPTION

[0045] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0046] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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 devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0047] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0048] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0050] Combine the following Figure 1-Figure 5 Embodiments of the present invention are described.

[0051] The present embodiment provides a bogie frame, which mainly includes a load-bearing body 100 and two leaf springs 200. The load-bearing body 100 is integrally cast using high-strength casting materials. The load-bearing body 100 includes two oppositely disposed C-shaped beams 110 and two oppositely disposed wing-shaped beams 120 disposed between the two C-shaped beams 110. The two wing-shaped beams 120 are respectively configured with mounting channels 130, wherein the two C-shaped beams 110 and the two wing-shaped beams 120 are jointly enclosed to form a center pin channel 140 for mounting a center pin. The two leaf springs 200 are respectively mounted in the two mounting channels 130, and the leaf springs 200 extend in the longitudinal direction of the load-bearing body 100. The two ends of each leaf spring 200 are respectively provided with a pad 210 for connecting the wheelset bushing.

[0052] In this embodiment, the original cross beam and side beam structure are replaced by the load-bearing body 100 and the leaf spring 200. The load-bearing body 100 is integrally cast using high-strength casting materials, so that the load-bearing body 100 can be quickly formed and can achieve a high strength-to-weight ratio, while also avoiding the occurrence of frame welding defects. The structure of the load-bearing body 100 is simple, and the structural form of the leaf spring 200 also makes the weight of the leaf spring 200 much less than the weight of the traditional side beam, making the frame lightweight.

[0053] The structures of the C-shaped beam 110 and the wing-shaped beam 120 can be designed based on the load transfer of the frame, and the structures of the C-shaped beam 110 and the wing-shaped beam 120 can be topologically optimized based on the load-bearing conditions at each position, so that the C-shaped beam 110 and the wing-shaped beam 120 not only have good load-bearing performance, but also have the advantages of simple structure and less consumables, so as to achieve a lightweight design of the frame.

[0054] The vertical load on the frame is mainly borne by the two leaf springs 200 , and the lateral load and longitudinal load are borne and transmitted through the load-bearing body 100 .

[0055] According to the bogie frame provided by the present invention, the wing beam 120 includes a bottom beam 1210 and a top beam 1230, the two ends of the bottom beam 1210 are respectively connected to the ends of the two C-shaped beams 110, and a support 1220 is extended in the middle of the bottom beam 1210 in the direction away from the center pin channel 140. The top beam 1230 is located between the two C-shaped beams 110, one end of the top beam 1230 is bent downward to form a bending portion 1240, and the bending portion 1240 is connected to the support 1220, and the other end of the top beam 1230 extends in the lateral direction of the load-bearing body 100 and is respectively connected to the two ends of the bottom beam 1210 through two connecting beams 1250. Among them, the bottom beam 1210, the top beam 1230 and the bending portion 1240 together enclose the installation channel 130.

[0056] like Figure 2 and Figure 3 As shown, the bottom beam 1210 is located below the top beam 1230, the bottom beam 1210 is arranged along the longitudinal direction of the load-bearing body 100, and the top beam 1230 is arranged along the transverse direction of the load-bearing body 100, that is, the top beam 1230 and the bottom beam 1210 are perpendicular to each other in space arrangement. One end of the top beam 1230 is bent vertically downward to form a bending portion 1240, and the bending portion is connected by an arc transition, and the bending portion 1240 is connected to the support 1220 in the middle of the bottom beam 1210, so that one end of the top beam 1230 is connected to the middle of the bottom beam 1210 to form a whole. The other end of the top beam 1230 is connected to the two ends of the bottom beam 1210 through two connecting beams 1250, so that the other end of the top beam 1230 is connected to the two ends of the bottom beam 1210 to form a whole.

[0057] The thickness of the connector gradually increases along the direction from one end of the top beam 1230 away from the bent portion 1240 to the end of the bottom beam 1210 to meet the load-bearing requirements. The shape of the connector is generally set to be an arc, and along the direction from one end of the top beam 1230 away from the bent portion 1240 to the end of the bottom beam 1210, the connector is slightly bent toward the center pin channel 140.

[0058] After the connecting member connects the ends of the top beam 1230 and the bottom beam 1210, the L-shaped top beam 1230 can enclose the middle part of the bottom beam 1210 to form the aforementioned installation channel 130, so as to be used to connect the leaf spring 200. The height of the enclosed installation channel 130 is just adapted to the maximum height of the leaf spring 200, so that the middle part of the leaf spring 200 is fixed in the installation channel 130, and the width of the enclosed installation channel 130 matches the width of the leaf spring 200, so that the leaf spring 200 can be inserted into the installation channel 130.

[0059] One end of each bottom beam 1210 extends in a direction away from the C-shaped beam 110 and forms a wing plate 1260, and an anti-roll torsion bar seat 1270 is configured at the end of the wing plate 1260. The anti-roll torsion bar seat 1270 is used to install the anti-roll torsion bar to achieve the anti-roll of the frame. The provision of the wing plate 1260 allows the anti-roll torsion bar seat 1270 to achieve the required installation position requirements.

[0060] An anti-rolling load transfer beam 1110 is provided below each C-shaped beam 110, and both ends of each anti-rolling load transfer beam 1110 are connected to both ends of the C-shaped beam 110 or two bottom beams 1210. The anti-rolling load transfer beam 1110 is used to transfer the anti-rolling load to meet the load transfer requirements of the anti-rolling.

[0061] Both anti-roll load transfer beams 1110 are bent. The anti-roll load transfer beam 1110 close to the wing panel 1260 is bent toward the C-shaped beam 110, and the anti-roll load transfer beam 1110 away from the wing panel 1260 is bent away from the C-shaped beam 110, so that each anti-roll load transfer beam 1110 can meet its own load transfer requirements.

[0062] The lower surface of the bottom beam 1210 and the lower surface of the anti-rolling load transfer beam 1110 are respectively provided with load transfer ribs 1280, each of which is distributed along the length direction of the bottom beam 1210 and the anti-rolling load transfer beam 1110, and each of which is connected to the bottom beam 1210 and the anti-rolling load transfer beam 1110 in a T-shape. The upper surface of each top beam 1230 is respectively provided with a reinforcing rib 1290, each of which is distributed along the length direction of the top beam 1230, and each of which is connected to the top beam 1230 in a T-shape.

[0063] The load transfer ribs 1280 can assist the bottom beam 1210 and the anti-roll load transfer beam 1110 in transferring loads, and can improve the structural strength and fatigue strength of the bottom beam 1210 and the anti-roll load transfer beam 1110, and further ensure that the bottom beam 1210 and the anti-roll load transfer beam 1110 meet the load transfer requirements. Each load transfer rib 1280 is connected to the bottom beam 1210 and the anti-roll load transfer beam 1110 in a T-shape, so that the structure formed by the load transfer rib 1280, the bottom beam 1210 and the anti-roll load transfer beam 1110 is more stable, and at the same time meets the lightweight design requirements.

[0064] The reinforcing ribs 1290 can assist the top beam 1230 in transferring loads, and can improve the structural strength and fatigue strength of the top beam 1230, further ensuring that the top beam 1230 meets the requirements of load transfer. Each reinforcing rib 1290 is connected to the top beam 1230 in a T-shape, so that the structure formed by the reinforcing ribs 1290 and the top beam 1230 is more stable, while meeting the requirements of lightweight design.

[0065] The upper surface of each top beam 1230 is provided with an empty spring mounting seat 300, which is located above the mounting channel 130. The empty spring mounting seat 300 is provided with a mounting protrusion 310 protruding outward in the direction opposite to the leaf spring 200, and the distance between the two empty spring mounting seats 300 is adapted to the distance between the two leaf springs 200.

[0066] The empty spring mounting seat 300 is used to connect the empty spring. The empty spring mounting seat 300 is provided with a protrusion 410 protruding outward in the direction opposite to the leaf spring 200. The empty spring is provided with a groove corresponding to the protrusion 410. When installing the empty spring, the groove of the empty spring is aligned with the protrusion 410 to achieve the positioning installation of the empty spring. Compared with the traditional method of inserting the empty spring into the mounting seat, the empty spring will not be inserted into the installation channel 130 in the above method, so that the empty spring is prevented from damaging the leaf spring 200 in the installation channel 130.

[0067] The distance between the two empty spring mounting seats 300 is adapted to the distance between the two leaf springs 200 . Specifically, the distance between the two empty spring mounting seats 300 is the same as the distance between the two leaf springs 200 to avoid generating additional torque on the leaf springs 200 .

[0068] A leaf spring 200 positioning portion is formed on the lower surface of each top beam 1230, and a connecting block 220 is provided on the upper surface of the leaf spring 200. One of the leaf spring 200 positioning portion and the connecting block 220 is configured with an inwardly concave mounting groove 230, and the other of the leaf spring 200 positioning portion and the connecting block 220 is configured with an outwardly convex protrusion 410. The protrusion 410 is suitable for being snapped into the mounting groove 230, and the protrusion 410 and the mounting groove 230 are respectively arranged to be matched cross shapes.

[0069] The mounting portion of the leaf spring 200 and the mounting groove 230 on the connecting block 220 cooperate with the protrusion 410 to achieve the positioning and installation of the leaf spring 200. The protrusion 410 and the mounting groove 230 are respectively arranged in a matching cross shape to achieve the longitudinal and transverse limiting functions of the leaf spring 200. Specifically, the mounting portion of the leaf spring 200 is configured with a cross-shaped protrusion 410, and the connecting block 220 is configured with a cross-shaped mounting groove 230.

[0070] Each top beam 1230 is respectively provided with a motor installation hanging point 500 so as to hang and install the motor, wherein the motor is connected to the motor installation hanging point 500 via a hanging rod.

[0071] Each top beam 1230 extends toward the direction of the center pin channel 140 and is connected to a transverse stop mounting seat 900 to achieve the installation of the transverse stop.

[0072] An anti-snake shock absorber seat 600 is configured on one side of each bending portion 1240 away from the installation channel 130 for installing an anti-snake shock absorber.

[0073] Both ends of each bottom beam 1210 are respectively connected to a positioning arm seat 700 to install the trapezoidal groove positioning arm.

[0074] A traction rod seat 800 is provided on the lower surface of each anti-roll load transfer beam 1110 to install a traction rod.

[0075] The leaf spring 200 includes a carbon fiber top plate 240, a carbon fiber bottom plate 250, and a plurality of carbon fiber vertical plates 260. The carbon fiber top plate 240 extends in the longitudinal direction of the bearing body 100, and the carbon fiber top plate 240 is arranged in an arc shape. The carbon fiber bottom plate 250 extends in the longitudinal direction of the bearing body 100, and the carbon fiber bottom plate 250 is arranged in an arc shape. The carbon fiber bottom plate 250 is located below the carbon fiber top plate 240, and the bending directions of the carbon fiber bottom plate 250 and the carbon fiber top plate 240 face the same side. The curvature of the carbon fiber bottom plate 250 is greater than the curvature of the carbon fiber top plate 240, and the thickness of the carbon fiber bottom plate 250 is less than the thickness of the carbon fiber top plate 240. The plurality of carbon fiber vertical plates 260 are arranged vertically and side by side between the carbon fiber top plate 240 and the carbon fiber bottom plate 250, and the plurality of carbon fiber vertical plates 260 are attached to each other in sequence.

[0076] The carbon fiber top plate 240, the carbon fiber bottom plate 250 and the plurality of carbon fiber vertical plates 260 constitute the carbon fiber leaf spring 200, so that the leaf spring 200 is light in weight, which is beneficial to the lightweight structure. The curved carbon fiber top plate 240 and the curved carbon fiber bottom plate 250 are both beneficial to the load-bearing of the leaf spring 200. The bending directions of the carbon fiber bottom plate 250 and the carbon fiber top plate 240 face the same side, and the curvature of the carbon fiber bottom plate 250 is greater than that of the carbon fiber top plate 240, so that the upper carbon fiber top plate 240 can resist pressure, and the lower carbon fiber bottom plate 250 can resist pressure.

[0077] The thickness of the carbon fiber bottom plate 250 is smaller than that of the carbon fiber top plate 240 , so that the upper carbon fiber top plate 240 can resist pressure and the lower carbon fiber bottom plate 250 can resist pressure.

[0078] A plurality of carbon fiber vertical plates 260 are vertically and side by side arranged between the carbon fiber top plate 240 and the carbon fiber bottom plate 250, and the plurality of carbon fiber vertical plates 260 are attached to each other in sequence. The number of carbon fiber vertical plates 260 can be selected based on the actual stiffness requirements. In this embodiment, the number of carbon fiber vertical plates 260 is set to 10.

[0079] The carbon fibers of the carbon fiber top plate 240 and the carbon fiber bottom plate 250 are arranged unidirectionally in the longitudinal direction, and the carbon fibers of the carbon fiber vertical plate 260 are arranged bidirectionally and crosswise, and the angle between the carbon fiber direction of the carbon fiber vertical plate 260 and the horizontal plane is 45 degrees. Based on its unique carbon fiber arrangement, the strength design and lightweight design of the leaf spring 200 are ensured.

[0080] The upper surface of the pad 210 is matched with the lower surface of the carbon fiber bottom plate 250, and hooks 270 are extended upward on both sides of each pad 210, and the hooks 270 are suitable for being hung on the upper surface of the carbon fiber top plate 240. The pad 210 is fixed by the hook 270, and the longitudinal force and lateral force of the pad 210 can be not constrained. Specifically, the pad 210 is a rubber block.

[0081] On the other hand, the present invention also provides a bogie, comprising the bogie frame in the aforementioned embodiment.

[0082] In this embodiment, by using the aforementioned bogie frame, the load-bearing body 100 and the leaf spring 200 are used to replace the original cross beam and side beam structure, and the load-bearing body 100 is integrally cast using high-strength casting materials, so that the load-bearing body 100 can be quickly formed and can achieve a high strength-to-weight ratio, while also avoiding the generation of frame welding defects. The structure of the load-bearing body 100 is simple, and the structural form of the leaf spring 200 also makes the weight of the leaf spring 200 much less than the weight of the traditional side beam, making the frame lightweight.

[0083] On the other hand, the present invention also provides a rail vehicle, including a center pin, a car body and a bogie of the aforementioned embodiment, wherein the bogie is connected to the car body via an empty spring, and the center pin passes through the center pin channel 140 and is connected to the car body via a traction rod.

[0084] In this embodiment, the bogie is connected to the car body through an empty spring, the center pin passes through the center pin channel 140 and is connected to the car body through a traction rod. The bogie adopts the above-mentioned bogie frame, and the load-bearing body 100 and the leaf spring 200 are used to replace the original cross beam and side beam structure. The load-bearing body 100 is integrally cast with high-strength casting materials, so that the load-bearing body 100 can be quickly formed and can achieve a high strength-to-weight ratio, while avoiding the occurrence of frame welding defects. The structure of the load-bearing body 100 is simple, and the structural form of the leaf spring 200 also makes the weight of the leaf spring 200 much less than the weight of the traditional side beam, so that the frame has a significant lightweight effect.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bogie frame, characterized in that: include: The bearing body is integrally cast and includes two C-shaped beams disposed opposite to each other and two wing-shaped beams disposed opposite to each other between the two C-shaped beams, wherein the two wing-shaped beams are respectively configured with mounting channels, wherein the two C-shaped beams and the two wing-shaped beams are jointly enclosed to form a center pin channel for mounting a center pin; Two leaf springs are respectively installed in the two installation channels, and the leaf springs extend in the longitudinal direction of the bearing body. Both ends of each leaf spring are respectively provided with a pad for connecting the wheelset sleeve.

2. The bogie frame according to claim 1, characterized in that: The wing beam comprises: A bottom beam, both ends of which are connected to the ends of the two C-shaped beams respectively, and a support is extended from the middle of the bottom beam in the direction away from the center pin channel; A top beam, located between the two C-shaped beams, one end of the top beam is bent downward to form a bent portion, the bent portion is connected to the support, and the other end of the top beam extends in the lateral direction of the bearing body and is respectively connected to the two ends of the bottom beam through two connecting beams; Wherein, the bottom beam, the top beam and the bent portion together enclose the installation channel.

3. The bogie frame according to claim 2, characterized in that: One end of each of the bottom beams extends in a direction away from the C-shaped beam to form a wing plate, and an anti-roll torsion bar seat is configured at the end of the wing plate; An anti-rolling load transfer beam is provided below each of the C-shaped beams, and two ends of each of the anti-rolling load transfer beams are connected to two ends of the C-shaped beam or the two bottom beams respectively; The anti-roll load transfer beam close to the wing panel is bent toward the C-shaped beam, and the anti-roll load transfer beam far from the wing panel is bent away from the C-shaped beam.

4. The bogie frame according to claim 3, characterized in that: The lower surface of the bottom beam and the lower surface of the anti-roll load transfer beam are respectively provided with load transfer ribs, each of which is distributed along the length direction of the bottom beam and the anti-roll load transfer beam, and each of the load transfer ribs is respectively connected to the bottom beam and the anti-roll load transfer beam in a T-shape; The upper surface of each of the top beams is provided with reinforcing ribs, each of the reinforcing ribs is distributed along the length direction of the top beam, and each of the reinforcing ribs is connected to the top beam in a T-shape.

5. The bogie frame according to claim 2, characterized in that: An empty spring mounting seat is respectively provided on the upper surface of each of the top beams, and the empty spring mounting seat is located above the mounting channel; Wherein, the empty spring mounting seat is provided with a mounting protrusion protruding outward in the direction away from the leaf spring, and the distance between the two empty spring mounting seats is adapted to the distance between the two leaf springs.

6. The bogie frame according to claim 2, characterized in that: A leaf spring positioning portion is formed on the lower surface of each of the top beams, and a connecting block is provided on the upper surface of the leaf spring. One of the leaf spring positioning portion and the connecting block is configured with an inwardly concave mounting groove, and the other of the leaf spring positioning portion and the connecting block is configured with an outwardly convex protrusion, the protrusion is suitable for being snapped into the mounting groove, and the protrusion and the mounting groove are respectively arranged to be matching cross shapes.

7. The bogie frame according to claim 4, characterized in that: Each of the top beams is respectively provided with a motor installation hanging point; Each of the top beams extends toward the direction of the center pin channel and is connected to a transverse stop mounting seat; An anti-snake shock absorber seat is constructed on one side of each of the bent portions away from the installation channel; Both ends of each bottom beam are respectively connected with a positioning rotating arm seat; A traction rod seat is respectively provided on the lower surface of each of the anti-roll load transfer beams.

8. The bogie frame according to any one of claims 1 to 7, characterized in that: The leaf spring comprises: A carbon fiber top plate extending in the longitudinal direction of the bearing body, wherein the carbon fiber top plate is arranged in an arc shape; A carbon fiber bottom plate extending in the longitudinal direction of the bearing body, 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 bottom plate and the carbon fiber top plate facing the same side, the curvature of the carbon fiber bottom plate being greater than that of the carbon fiber top plate, and the thickness of the carbon fiber bottom plate being less than that of the carbon fiber top plate; A plurality of carbon fiber vertical plates are vertically and side by side arranged between the carbon fiber top plate and the carbon fiber bottom plate, and the plurality of carbon fiber vertical plates are sequentially attached to each other; The carbon fibers of the carbon fiber top plate and the carbon fiber bottom plate are arranged unidirectionally in the longitudinal direction, the carbon fibers of the carbon fiber vertical plate are arranged bidirectionally and crosswise, and the angle between the carbon fiber direction of the carbon fiber vertical plate and the horizontal plane is 45 degrees; The upper surface of the pad is matched with the lower surface of the carbon fiber bottom plate, and hooks are respectively extended upward on both sides of each pad, and the hooks are suitable for being hung on the upper surface of the carbon fiber top plate.

9. A bogie, characterized in that: Comprising a bogie frame as claimed in any one of claims 1-8.

10. A rail vehicle, characterized in that: It comprises a center pin, a car body and a bogie as claimed in claim 9, wherein the bogie is connected to the car body through an empty spring, and the center pin passes through the center pin channel and is connected to the car body through a traction rod.

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