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, and the bogie frame comprises a box beam, a bearing beam, an inner vertical plate, an outer vertical plate, a bearing bottom plate, a bearing top plate and a plate spring. The box beams are hollow and respectively form mounting channels. The bearing beams are arranged on the box beams respectively. The inner vertical plates are arranged in a bent mode and connected with the bearing beams in a welded mode to define a center pin channel. And the outer vertical plate is welded with the box beam. The bearing bottom plate is connected with the box beam, the inner vertical plate and the outer vertical plate in a welded mode. The bearing top plate is located above the bearing top plate, the top of the box beam is open, the bearing top plate extends to the position above the box beam and is connected with the box beam in a welded mode to seal the top opening, and the bearing top plate is further connected with the bearing beam, the inner vertical plate and the outer vertical plate in a welded mode. The plate spring is installed in the installation channel and extends in the longitudinal direction of the box beam, and the two ends of the plate spring are each provided with a cushion block used for being connected with a wheel set shaft sleeve. The structure is simple, the strength is high, and the forming is convenient.

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, which is used to solve the technical problem in the prior art that it is difficult to optimize the weight of the frame, and realize the lightweight design of the frame.

[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] Two box beams are spaced apart and arranged in parallel, each of the box beams is hollow inside and forms a mounting channel;

[0008] Two load-bearing beams are respectively arranged on the sides of the two box beams facing each other;

[0009] Two inner vertical plates are arranged between the two box beams, the two inner vertical plates are bent in directions away from each other, and each inner vertical plate is welded to the two load-bearing beams to enclose and form a center pin channel;

[0010] Two external panels are arranged between the two box beams, and two sides of each external panel are respectively connected by welding to the two box beams;

[0011] Two bearing bottom plates are arranged between the two box beams, and each of the bearing bottom plates is respectively connected by welding to the two box beams, the inner vertical plate and the outer vertical plate;

[0012] A bearing top plate is located above the bearing top plate, each of the box beams has an opening at the top, the bearing top plate extends to the top of the box beam and is welded to close the top opening, and the bearing top plate is also welded to the bearing beam, the inner vertical plate and the outer vertical plate;

[0013] Two leaf springs are respectively installed in the two installation channels, and the leaf springs extend along the longitudinal direction of the box beam. Both ends of each leaf spring are respectively provided with a pad for connecting the wheelset sleeve.

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

[0015] The empty spring mounting seat is provided with a mounting protrusion protruding outward in the direction away from the bearing top plate, and the distance between the two empty spring mounting seats is adapted to the distance between the two leaf springs.

[0016] According to a bogie frame provided by the present invention, a leaf spring positioning portion is formed on the lower surface of the bearing top plate, and the leaf spring positioning portion is located in the mounting channel, wherein a connecting block is provided on the upper surface of the leaf spring, and 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.

[0017] According to a bogie frame provided by the present invention, a process hole is respectively provided on the lower surface of each box beam for forming the protrusion or the installation groove through processing through the process hole.

[0018] According to a bogie frame provided by the present invention, at least two U-shaped reinforcing ribs with their openings facing upwards are arranged at intervals in 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 sides of the two U-shaped reinforcing ribs away from each other are respectively connected to positioning arm seats.

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

[0020] The lower surface of each of the bearing base plates is configured with a traction rod seat and a lateral shock absorber mounting seat, and the traction rod seat and the lateral shock absorber mounting seat arranged on each of the bearing base plates are centrally symmetrically distributed along the center of the center pin channel;

[0021] The bearing top plate is provided with a motor hanger and forms a motor installation hanger point, the motor hanger extends toward the bearing bottom plate and is flush with the bearing bottom plate;

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

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

[0024] A carbon fiber top plate extending in the longitudinal direction of the box beam, wherein the carbon fiber top plate is arranged in an arc shape;

[0025] A carbon fiber bottom plate extending in the 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 bottom plate and the carbon fiber top plate facing 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;

[0026] 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;

[0027] 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.

[0028] According to a bogie frame provided by the present invention, the upper surface of the pad is matched with the lower surface of the carbon fiber bottom plate, and hooks are 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.

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

[0030] 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.

[0031] The bogie frame provided in the embodiment of the present invention comprises a main bearing structure formed by 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 bearing structure and leaf springs are used to replace the original structure of the cross beam and the side beam. The main bearing structure is formed by welding and has the characteristics of simple structure, high strength, and convenient forming. 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, thereby significantly reducing the weight of the frame.

[0032] The bogie provided in the embodiment of the present invention uses the aforementioned bogie frame, and utilizes 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 to form a main load-bearing structure, and utilizes the main load-bearing structure and leaf springs to replace the original cross beam and side beam structure. The main load-bearing structure is formed by welding, and has the characteristics of simple structure, high strength, and easy forming. 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, so that the lightweight effect of the frame is obvious.

[0033] The rail vehicle provided by the embodiment of the present invention has a bogie connected to the car body through an empty spring, a center pin passing through the center pin channel and connected to the car body through a traction rod, the bogie adopts the above-mentioned bogie frame, and the main bearing structure is composed 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 bearing structure and leaf springs are used to replace the original cross beam and side beam structure. The main bearing structure is formed by welding, and has the characteristics of simple structure, high strength, and easy forming. 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, so that the frame lightweight effect is obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 It 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 schematic diagram of the three-dimensional structure of the bogie frame provided by the present invention;

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

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

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

[0040] Reference numerals:

[0041] 110, box beam; 1110, process hole; 1120, U-shaped reinforcement rib; 1130, positioning arm seat; 1140, anti-snake 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, installation groove; 230, carbon fiber top plate; 240, carbon fiber bottom plate; 250, carbon fiber vertical plate; 260, pad; 300, empty spring mounting seat; 310, installation protrusion; 320, leaf spring positioning part; 330, protrusion. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Combine the following Figure 1-Figure 5 Embodiments of the present invention are described.

[0048] The present embodiment provides a bogie frame, comprising 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 arranged in parallel, and each box beam 110 is hollow inside and forms a mounting channel 170 respectively. The two load-bearing beams 120 are respectively arranged on the sides of the two box beams 110 facing each other. The two inner vertical plates 130 are arranged between the two box beams 110, and the two inner vertical plates 130 are respectively bent in directions away from each other, and each inner vertical plate 130 is respectively welded to the two load-bearing beams 120 to enclose and form a center pin channel 180. The two outer vertical plates 140 are arranged between the two box beams 110, and the two sides of each outer vertical plate 140 are respectively welded to the two box beams 110. Two bearing bottom plates 150 are arranged between the two box beams 110, and each bearing bottom plate 150 is respectively welded to the two box beams 110, the inner vertical plate 130 and the outer vertical plate 140. The bearing top plate 160 is located above the bearing top plate 160, and each box beam 110 is respectively opened at the top. The bearing top plate 160 extends to the top of the box beam 110 and is welded to close the top opening, and the bearing top plate 160 is also welded to the bearing beam 120, the inner vertical plate 130 and the outer vertical plate 140. Two leaf springs 200 are respectively installed in the two installation channels 170, and the leaf springs 200 extend in the longitudinal direction of the box beam 110. The two ends of each leaf spring 200 are respectively provided with a pad 260 for connecting the wheelset bushing.

[0049] In this embodiment, a main bearing structure is formed by a box beam 110, a load-bearing beam 120, an inner vertical plate 130, an outer vertical plate 140, a bearing bottom plate 150 and a bearing top plate 160. The main bearing structure and a leaf spring 200 replace the original structure of the cross beam and the side beam. The main bearing structure is formed by welding, and has the characteristics of simple structure, high strength, and easy forming. 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 lightweight effect of the frame is obvious.

[0050] The box beam 110, the load-bearing beam 120, the inner vertical plate 130, the outer vertical plate 140, the load-bearing bottom plate 150 and the load-bearing top plate 160 are welded and formed, so that the shapes of the box beam 110, the load-bearing beam 120, the inner vertical plate 130, the outer vertical plate 140, the load-bearing bottom plate 150 and the load-bearing top plate 160 can be independently processed and structurally designed, and the plate thickness, beam width, etc. of the box beam 110, the load-bearing beam 120, the inner vertical plate 130, the outer vertical plate 140, the load-bearing bottom plate 150 and the load-bearing top plate 160 can be reasonably planned based on their respective load-bearing requirements, so as to meet the requirements of lightweight design while ensuring that the strength requirements are met. After the box beam 110, the load-bearing beam 120, the inner vertical plate 130, the outer vertical plate 140, the load-bearing bottom plate 150 and the load-bearing top plate 160 are processed respectively, they are welded by a welding mechanism to form a main load-bearing structure.

[0051] The box beam 110 is a hollow structure. The box beam 110 is provided with a mounting channel 170 along the longitudinal direction. The leaf spring 200 can be installed in the mounting channel 170 and arranged along the longitudinal direction of the box beam 110, so that the leaf spring 200 can replace the original side beam structure. The leaf spring 200 is made of carbon fiber material, which has the advantages of high strength, light weight and easy processing, thereby meeting the lightweight design requirements of the frame.

[0052] like Figure 4 As shown, each load-bearing beam 120 includes two beam bodies distributed in an eight-shaped shape, and the two beam bodies are close to each other along the direction from the box beam 110 to the center pin channel 180. The inner vertical plate 130 and the outer vertical plate 140 are located on the inner side and the outer side respectively, so that the inner side and the outer side of the load-bearing bottom plate 150 and the load-bearing top plate 160 are respectively in a closed state, and the inner vertical plate 130 and the outer vertical plate 140 can also play a load-bearing effect. The inner vertical plate 130 and the outer vertical plate 140 are both arranged in an arc shape, and the two inner vertical plates 130 are bent in directions away from each other, and the two outer vertical plates 140 are also bent in directions away from the inner vertical plates 130, so that the shape of the inner vertical plate 130 and the outer vertical plate 140 are designed respectively, so that the frame is more beautiful while achieving a lightweight design and meeting the load-bearing requirements.

[0053] like Figure 1As shown, two empty spring mounting seats 300 are arranged at intervals on the upper surface of the load-bearing top plate 160, and the two empty spring mounting seats 300 are respectively located above the two box beams 110. The empty spring mounting seats 300 are provided with mounting protrusions 310 protruding outwards in the direction away from the load-bearing top plate 160, and the distance between the two empty spring mounting seats 300 is adapted to the distance between the two leaf springs 200.

[0054] The empty spring mounting seat 300 is used to connect the empty spring. The empty spring mounting seat 300 is provided with a mounting protrusion 310 that protrudes outward in the direction opposite to the leaf spring 200. The empty spring is provided with a groove corresponding to the mounting protrusion 310. When installing the empty spring, the groove of the empty spring is aligned with the mounting protrusion 310 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 170 in the above method, so that the empty spring is prevented from damaging the leaf spring 200 in the installation channel 170.

[0055] 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 .

[0056] like Figure 3 and Figure 5 As shown, a leaf spring 200 positioning portion is formed on the lower surface of the bearing top plate 160, and the leaf spring 200 positioning portion is located in the mounting channel 170, wherein a connecting block 210 is provided on the upper surface of the leaf spring 200, and one of the leaf spring 200 positioning portion and the connecting block 210 is configured with an inwardly concave mounting groove 220, and the other of the leaf spring 200 positioning portion and the connecting block 210 is configured with an outwardly convex protrusion 330, and the protrusion 330 is suitable for being snapped into the mounting groove 220, and the protrusion 330 and the mounting groove 220 are respectively arranged to be matched cross shapes.

[0057] The mounting groove 220 and the protrusion 330 on the mounting portion of the leaf spring 200 and the connecting block 210 cooperate with each other to realize the positioning and installation of the leaf spring 200. The protrusion 330 and the mounting groove 220 are respectively arranged in a matching cross shape to realize 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 330, and the connecting block 210 is configured with a cross-shaped mounting groove 220.

[0058] like Figure 2As shown, the lower surface of each box beam 110 is provided with a process hole 1110, which is used to form a protrusion 330 or a mounting groove 220 through the process hole 1110. Through the process hole 1110, it is convenient to form a cross-shaped protrusion 330 on the mounting portion of the leaf spring 200 after welding, so as to realize the assembly between the leaf spring 200 and the mounting channel 170. The cross-shaped protrusion 330 is processed and formed after welding, which can ensure the accuracy of the installation point position and avoid the problem that the cross-shaped protrusion 330 is formed first and then the box beam 110 is formed by welding, which causes the installation position of the leaf spring 200 to be inaccurate.

[0059] like Figure 4 As shown, at least two U-shaped reinforcing ribs 1120 with openings facing upward are spaced apart in the box beam 110, wherein the two U-shaped reinforcing ribs 1120 are respectively located at the openings on both sides of the mounting channel 170, and the sides of the two U-shaped reinforcing ribs 1120 away from each other are respectively connected to positioning arm seats 1130.

[0060] The U-shaped reinforcement ribs 1120 can strengthen the structure inside the box beam 110, thereby improving the structural strength of the box beam 110. At least two U-shaped reinforcement ribs 1120 are arranged longitudinally and spaced apart inside the box beam 110 to strengthen the structure at multiple positions. The two U-shaped reinforcement ribs 1120 are respectively connected to the sides away from each other with positioning arm seats 1130 for installing the trapezoidal groove positioning arm.

[0061] An anti-snake-shaped shock absorber seat 1140 and an anti-roll torsion bar seat 1150 are respectively provided on one side of the box beam 110 away from the inner vertical plate 130 to connect the anti-snake-shaped shock absorber and the anti-roll torsion bar respectively.

[0062] The lower surface of each bearing base plate 150 is configured with a traction rod seat 1510 and a lateral shock absorber mounting seat 1520, which are arranged on each bearing base plate 150 and are centrally symmetrically distributed along the center of the center pin channel 180 to connect the traction rod and the lateral shock absorber respectively.

[0063] The bearing top plate 160 is provided with a motor hanger 1610 and forms a motor mounting hanging point, the motor hanger 1610 extends toward the bearing bottom plate 150 and is flush with the bearing bottom plate 150. The motor mounting hanging point formed by the motor hanger 1610 is used to connect the motor suspension rod to fix the motor.

[0064] Each load-bearing beam 120 extends toward the center 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 a plurality of carbon fiber vertical plates 250. The carbon fiber top plate 230 extends in the longitudinal direction of the box beam 110, and the carbon fiber top plate 230 is arranged in an arc shape. The carbon fiber bottom plate 240 extends in the longitudinal direction of the box beam 110, and the carbon fiber bottom plate 240 is arranged in an arc shape. The carbon fiber bottom plate 240 is located below the carbon fiber top plate 230, and the bending directions of the carbon fiber bottom plate 240 and the carbon fiber top plate 230 face the same side, the curvature of the carbon fiber bottom plate 240 is greater than the curvature of the carbon fiber top plate 230, and the thickness of the carbon fiber bottom plate 240 is less than the thickness of the carbon fiber top plate 230. A plurality of carbon fiber vertical plates 250 are arranged vertically and side by side between the carbon fiber top plate 230 and the carbon fiber bottom plate 240, and the plurality of carbon fiber vertical plates 250 are attached to each other in sequence. The carbon fibers of the carbon fiber top plate 230 and the carbon fiber bottom plate 240 are arranged unidirectionally in the longitudinal direction, the carbon fibers of the carbon fiber vertical plate 250 are arranged bidirectionally and crosswise, and the angle between the carbon fiber direction of the carbon fiber vertical plate 250 and the horizontal plane is 45 degrees.

[0066] The carbon fiber top plate 230, the carbon fiber bottom plate 240 and the plurality of carbon fiber vertical plates 250 constitute the carbon fiber leaf spring 200, so that the leaf spring 200 is light in weight, which is conducive to the lightweight structure. The curved carbon fiber top plate 230 and the curved carbon fiber bottom plate 240 are both conducive to the load-bearing of the leaf spring 200. The bending directions of the carbon fiber bottom plate 240 and the carbon fiber top plate 230 face 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 the upper carbon fiber top plate 230 can resist pressure, and the lower carbon fiber bottom plate 240 can resist pressure.

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

[0068] A plurality of carbon fiber vertical plates 250 are vertically and side by side arranged between the carbon fiber top plate 230 and the carbon fiber bottom plate 240, and the plurality of carbon fiber vertical plates 250 are attached to each other in sequence. The number of carbon fiber vertical plates 250 can be selected based on the actual stiffness requirements. In this embodiment, the number of carbon fiber vertical plates 250 is set to 10.

[0069] The carbon fibers of the carbon fiber top plate 230 and the carbon fiber bottom plate 240 are arranged unidirectionally in the longitudinal direction, and the carbon fibers of the carbon fiber vertical plate 250 are arranged bidirectionally and crosswise, and the angle between the carbon fiber direction of the carbon fiber vertical plate 250 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.

[0070] The upper surface of the pad 260 is matched with the lower surface of the carbon fiber bottom plate 240, and hooks are extended upward on both sides of each pad 260, which are suitable for being hung on the upper surface of the carbon fiber top plate 230. The pad 260 is fixed by the hook hanging method, and the longitudinal force and lateral force of the pad 260 can be not constrained. Specifically, the pad 260 is a rubber block.

[0071] On the other hand, the present invention also provides a bogie, comprising the bogie frame in the aforementioned embodiment.

[0072] In this embodiment, the aforementioned bogie frame is used, 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 are used to form a main load-bearing structure, and the main load-bearing structure and a leaf spring 200 are used to replace the original structure of the cross beam and the side beam. The main load-bearing structure is formed by welding, and has the characteristics of simple structure, high strength, and convenient forming. 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 lightweight effect of the frame is obvious.

[0073] 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, the bogie is connected to the car body through an empty spring, and the center pin passes through the center pin channel 180 and is connected to the car body through a traction rod.

[0074] In this embodiment, the bogie is connected to the car body through an empty spring, and the center pin passes through the center pin channel 180 and is connected to the car body through a traction rod. The bogie adopts the aforementioned bogie frame, and the box beam 110, the load-bearing beam 120, the inner vertical plate 130, the outer vertical plate 140, the load-bearing bottom plate 150 and the load-bearing top plate 160 are used to form the main load-bearing structure. The main load-bearing structure and the leaf spring 200 replace the original structure of the cross beam and the side beam. The main load-bearing structure is formed by welding, which has the characteristics of simple structure, high strength, and easy forming. 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 lightweight effect is obvious.

[0075] 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: Two box beams are spaced apart and arranged in parallel, each of the box beams is hollow inside and forms a mounting channel; Two load-bearing beams are respectively arranged on the sides of the two box beams facing each other; Two inner vertical plates are arranged between the two box beams, the two inner vertical plates are bent in directions away from each other, and each inner vertical plate is welded to the two load-bearing beams to enclose and form a center pin channel; Two external panels are arranged between the two box beams, and two sides of each external panel are respectively connected by welding to the two box beams; Two bearing bottom plates are arranged between the two box beams, and each of the bearing bottom plates is respectively connected by welding to the two box beams, the inner vertical plate and the outer vertical plate; A bearing top plate is located above the bearing top plate, each of the box beams has an opening at the top, the bearing top plate extends to the top of the box beam and is welded to close the top opening, and the bearing top plate is also welded to the bearing beam, the inner vertical plate and the outer vertical plate; Two leaf springs are respectively installed in the two installation channels, and the leaf springs extend along the longitudinal direction of the box beam. 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: Two empty spring mounting seats are arranged at intervals on the upper surface of the load-bearing top plate, and the two empty spring mounting seats are respectively located above the two box beams; The empty spring mounting seat is provided with a mounting protrusion protruding outward in the direction away from the bearing top plate, and the distance between the two empty spring mounting seats is adapted to the distance between the two leaf springs.

3. The bogie frame according to claim 1, characterized in that: A leaf spring positioning portion is formed on the lower surface of the bearing top plate, and the leaf spring positioning portion is located in the mounting channel, wherein a connecting block is provided on the upper surface of the leaf spring, and 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 configured to be matching cross shapes.

4. The bogie frame according to claim 3, characterized in that: The lower surface of each box beam is respectively provided with a process hole for forming the protrusion or the installation groove through the process hole.

5. The bogie frame according to claim 1, characterized in that: At least two U-shaped reinforcing ribs with openings facing upward are arranged in the box beam at intervals, wherein the two U-shaped reinforcing ribs are respectively located at the openings on both sides of the installation channel, and the sides of the two U-shaped reinforcing ribs away from each other are respectively connected to positioning arm seats.

6. The bogie frame according to claim 1, characterized in that: The box beam is provided with an anti-snake shock absorber seat and an anti-roll torsion bar seat on one side away from the inner vertical plate; The lower surface of each of the bearing base plates is configured with a traction rod seat and a lateral shock absorber mounting seat, and the traction rod seat and the lateral shock absorber mounting seat arranged on each of the bearing base plates are centrally symmetrically distributed along the center of the center pin channel; The bearing top plate is provided with a motor hanger and forms a motor installation hanger point, the motor hanger extends toward the bearing bottom plate and is flush with the bearing bottom plate; Each of the load-bearing beams extends toward the center pin channel and is connected to 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 the longitudinal direction of the box beam, wherein the carbon fiber top plate is arranged in an arc shape; A carbon fiber bottom plate extending in the 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 bottom plate and the carbon fiber top plate facing 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 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.

8. The bogie frame according to claim 7, characterized in that: 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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