Bogie with built-in axle box and railway vehicle

Abstract

The application discloses a kind of axle box built-in bogie and rail vehicle, comprising: framework, including two parallel side beams and connecting between two side beams crossbeam;Axle box, is located in the inner side of side beam;Brake caliper mounting seat, is located in the outer side of side beam;Brake caliper hanger, it is the transverse flattening structure, is connected with brake caliper mounting seat by vertical positioning fastener of axial vertical and transverse positioning fastener of axial transverse;Brake caliper, with the bottom of brake caliper hanger connection.Brake caliper hanger is the transverse flattening structure, reduce the transverse dimension, it is favorable to reduce the transverse dimension of brake caliper mounting seat, in order to realize the stable fixation of brake caliper hanger, utilize vertical positioning fastener and transverse positioning fastener simultaneously connect brake caliper hanger and brake caliper mounting seat, improve the strength of connection of both, on the basis of saving brake caliper upper installation space, realizes the reliable installation of brake caliper.

Description

Technical Field

[0001] This invention relates to the field of bogie technology, and more specifically, to a bogie with an integrated axle box. Furthermore, this invention also relates to a rail vehicle comprising the aforementioned bogie with an integrated axle box. Background Technology

[0002] To adapt to the numerous small-radius curves on intercity and urban rail lines, axle box-mounted bogies have gradually been adopted. However, with the axle box built-in, the installation space for other structural components becomes very limited. For example, in related technologies, the brake caliper mounting structure is a box-type structure, which is very large and occupies a lot of space. If the brake caliper mounting structure in related technologies is still used, the lateral dimension of the bogie will be very large, which is not suitable for axle box-mounted bogies.

[0003] Therefore, how to install brake calipers in a small structural space is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a bogie with an axle box built-in, which can realize the installation of brake calipers in a small structural space.

[0005] Another object of the present invention is to provide a rail vehicle including the above-mentioned axle box built-in bogie, which can realize the installation of brake calipers in a small structural space.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A bogie with an axle box integrated includes:

[0008] The frame includes two parallel side beams and a crossbeam connecting the two side beams;

[0009] The axle box body is located on the inner side of the side beam;

[0010] A brake caliper mounting base is located on the outer side of the side beam;

[0011] The brake caliper hanger has a horizontally flattened structure and is connected to the brake caliper mounting base via a vertically oriented vertical positioning fastener and a horizontally oriented horizontal positioning fastener.

[0012] The brake caliper is connected to the bottom of the brake caliper hanger.

[0013] Optionally, the top of the brake caliper mounting base is provided with a tread cleaner mounting part for fixing the tread cleaner.

[0014] Optionally, it further includes a driving device, the driving device comprising:

[0015] A traction motor is mounted on the crossbeam;

[0016] The gearbox is located on the crossbeam;

[0017] A flexible floating gear coupling is used to connect the traction motor and the gearbox.

[0018] The traction motor, the gearbox, and the flexible floating gear coupling are all located between the two side beams.

[0019] Optionally, the traction motor has a lateral groove, and a portion of the flexible floating gear coupling extends into the groove.

[0020] Optionally, the gearbox is provided with a large gear, which includes a mounting part and a meshing part connected to the mounting part, wherein the meshing part and the mounting part are in different lateral positions.

[0021] Optionally, the crossbeam is provided with a gearbox hanger, which is an integral forging and has an arc-shaped portion so that the gearbox hanger has a structure that is wide at both ends and narrows in the middle along the longitudinal direction.

[0022] Optionally, the gearbox includes a shaft end speed sensor, a grounding device, and a signal sensor, wherein the shaft end speed sensor, the grounding device, and the signal sensor are all located in the gearbox, or the shaft end speed sensor, the grounding device, and the signal sensor are all located inside the gearbox body.

[0023] Optionally, a structure is provided between the top of the axle box and the side beam:

[0024] Rubber joint assemblies are used to provide longitudinal and lateral positioning stiffness and release vertical stiffness;

[0025] Two steel spring assemblies, used to provide vertical stiffness, are arranged longitudinally on both sides of the rubber node assembly;

[0026] A positioning tie rod is provided between the bottom of the axle box and the side beam. The positioning tie rod is used to provide longitudinal stiffness and release vertical and lateral stiffness.

[0027] Optionally, an adjusting shim is provided between the steel spring assembly and the top of the axle box;

[0028] The steel spring assembly includes an upper clamping plate, a lower clamping plate, and a steel spring connected between the upper clamping plate and the lower clamping plate. The upper clamping plate is connected to the side beam and has a through hole. The upper end of the lower clamping plate has a first threaded hole for screwing in a process bolt to increase, decrease, or replace the adjusting shim by changing the vertical position of the lower clamping plate.

[0029] Optionally, the rubber node assembly includes:

[0030] A mandrel, the upper end of which has a tapered guide post;

[0031] A rubber portion is provided on the outer periphery of the mandrel;

[0032] A frame side mounting base is connected to the side beam and is provided with an inner conical hole, which is connected to the conical guide post.

[0033] The axle box side mounting seat is connected to the axle box body and to the outer periphery of the rubber part, and is provided with a positioning hole. The axle box body is provided with a positioning boss that cooperates with the positioning hole for positioning.

[0034] Optionally, the side beam is narrow in the middle and wide at both ends, and both ends of the side beam are provided with the rubber node assembly and the steel spring assembly.

[0035] Optionally, the interior of the side beam is provided with:

[0036] A spring sleeve is provided with a hollow groove, at least a portion of the steel spring assembly is disposed inside the spring sleeve, the hollow groove is used to limit the upper clamping plate of the steel spring assembly and to allow fastening bolts or process bolts to pass through;

[0037] A positioning cylinder is used to install the rubber node assembly.

[0038] Optionally, the inner side of the side beam is provided with a first lifting seat, and the outer periphery of the rubber node assembly is provided with a second lifting seat, further comprising:

[0039] A lifting boom is used to connect to the first lifting seat and the second lifting seat respectively to lift the axle box body.

[0040] Optionally, a longitudinal auxiliary beam extending from the inner side of the side beam is provided in the middle of the side beam, and the longitudinal auxiliary beam has a hollow structure;

[0041] The middle part of the side beam is provided with an anti-hunting shock absorber mounting seat that extends out of the side beam. The anti-hunting shock absorber mounting seat is connected to one end of the anti-hunting shock absorber. The anti-hunting shock absorber mounting seat includes two symmetrically arranged arc-shaped side surfaces, an arc-shaped bottom surface, and a rectangular outer surface that are connected as one piece.

[0042] The side beam is provided with an upper cover plate in the middle, and the upper cover plate is provided with an air spring in the middle; the upper cover plate has a first wing extending from the inside of the side beam and a second wing extending from the outside of the side beam, the first wing forming the top surface of the longitudinal auxiliary beam, and the second wing forming the top surface of the anti-hunting shock absorber mounting seat.

[0043] Optionally, the crossbeam includes a first crossbeam and a second crossbeam arranged in parallel, with a central pin between the first crossbeam and the second crossbeam;

[0044] One of the first crossbeam and the second crossbeam is provided with a traction rod, and the traction rod is located on the center line of the frame in the transverse direction;

[0045] A transverse damper is provided between the bottom of the side beam and the bottom formed by the center pin.

[0046] Optionally, the length of the first crossbeam is greater than the length of the second crossbeam, and the portion of the first crossbeam extending beyond the second crossbeam extends outward from the side beam. The end of the first crossbeam extending outward from the side beam is provided with an integrated mounting seat, and the integrated mounting seat is provided with a height valve.

[0047] The first crossbeam is a hollow structure, and an anti-roll torsion bar is inserted inside it. The anti-roll torsion bar extends from the end of the first crossbeam and is installed on the integrated mounting base.

[0048] A rail vehicle comprising any of the aforementioned axle box-integrated bogies.

[0049] The axle box-integrated bogie provided by this invention places the axle box body inside the side beam of the frame to form an axle box-integrated bogie. After the axle box is built in, the installation space is limited. In this embodiment, the brake caliper hanger is designed with a laterally flattened structure, which reduces the lateral dimension of the brake caliper hanger. This helps to reduce the lateral dimension of the brake caliper mounting seat used to install the brake caliper hanger. After the lateral dimension of the brake caliper mounting seat is reduced, the part that fixes the brake caliper hanger vertically is reduced. In order to achieve stable fixation of the brake caliper hanger, this embodiment uses vertical positioning fasteners and lateral positioning fasteners to connect the brake caliper hanger and the brake caliper mounting seat at the same time, so as to improve the connection strength between the brake caliper hanger and the brake caliper mounting seat. Therefore, reliable installation of the brake caliper is achieved while saving the upper installation space of the brake caliper.

[0050] The rail vehicle provided by the present invention includes the above-mentioned axle box-integrated bogie and has the same beneficial effects as the axle box-integrated bogie. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0052] Figure 1This is a structural schematic diagram of the axle box-integrated bogie when it is a train bogie, provided in a specific embodiment of the present invention;

[0053] Figure 2 for Figure 1 A bottom view;

[0054] Figure 3 This is a structural schematic diagram of the axle box-integrated bogie as a trailer bogie, provided in a specific embodiment of the present invention;

[0055] Figure 4 for Figure 3 A bottom view;

[0056] Figure 5 A schematic diagram of the brake caliper mounting structure;

[0057] Figure 6 This is a schematic diagram of the drive device.

[0058] Figure 7 This is a sectional view of a primary suspension system;

[0059] Figure 8 This is a cross-sectional view of the primary suspension system when the adjustment pad is being adjusted.

[0060] Figure 9 for Figure 7 Top view;

[0061] Figure 10 A cross-sectional view of the assembled rubber node assembly and length-adjustable hanger;

[0062] Figure 11 This is a structural schematic diagram of the EMU frame;

[0063] Figure 12 for Figure 11 A bottom view;

[0064] Figure 13 This is a structural diagram of the trailer frame;

[0065] Figure 14 for Figure 13 A bottom view.

[0066] Figure label:

[0067] 1-Frame; 11-Side beam; 111-Spring sleeve; 112-Positioning cylinder; 113-First lifting seat; 114-Top cover plate; 12-Crossbeam; 121-First crossbeam; 1211-Integrated mounting base; 122-Second crossbeam; 13-Longitudinal auxiliary beam; 2-Axle box body; 21-Positioning boss; 3-Brake caliper mounting base; 31-Brake caliper hanger; 311-Tread cleaner mounting part; 3 2-Vertical positioning fastener; 33-Transverse positioning fastener; 34-Brake caliper; 4-Tread surface cleaner; 5-Drive unit; 51-Traction motor; 511-Traction motor mount; 52-Gearbox; 521-Large gear; 5211-Mounting part; 5212-Meshing part; 522-Gearbox hanger; 5221-Arc-shaped part; 53-Flexible floating gear coupling; 61-Rubber joint assembly; 611- Mandrel; 612-Rubber part; 613-Frame side mounting seat; 614-Shaft box side mounting seat; 6141-Second process removal hole; 6142-Fastener; 615-Second lifting seat; 616-First mounting bolt; 617-Gland; 62-Steel spring assembly; 621-Upper clamping plate; 6211-Through hole; 622-Lower clamping plate; 6221-First threaded hole; 623-Steel spring; 624-Process Bolt; 63-Positioning tie rod; 631-Bend; 64-Adjusting pad; 65-Hanging rod; 66-Vertical damper; 67-Vibration damping rubber; 71-Anti-hunting damper mounting base; 72-Anti-hunting damper; 8-Air spring; 9-Center pin assembly; 10-Traction rod; 20-Lateral damper; 30-Anti-roll torsion bar; 40-Wheelset assembly; 50-Wheel flange lubrication device; 60-Sand spreading and obstacle removal device. Detailed Implementation

[0068] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] The core of this invention is to provide a bogie with an integrated axle box, which allows for the installation of brake calipers within a small structural space. Another core aspect of this invention is to provide a rail vehicle including the aforementioned bogie with an integrated axle box, which also allows for the installation of brake calipers within a small structural space.

[0070] Please refer to Figures 1 to 5 , Figures 11 to 14 This invention provides an axle box-integrated bogie, including a frame 1, an axle box body 2, and a brake caliper mounting base 3 (e.g., ...). Figure 11 and Figure 13As shown), the frame 1 includes two parallel side beams 11 and a crossbeam 12 connecting the two side beams 11; the axle box 2 is located on the inner side of the side beams 11; the brake caliper mounting seat 3 is located on the outer side of the side beams 11; the brake caliper hanger 31 has a horizontally flattened structure and is connected to the brake caliper mounting seat 3 by a vertically oriented vertical positioning fastener 32 and a horizontally oriented horizontal positioning fastener 33; the brake caliper 34 is connected to the bottom of the brake caliper hanger 31.

[0071] It should be noted that, in this invention, the lateral direction refers to the lateral direction of the bogie built into the axle box, that is, the direction perpendicular to the side beam 11 and parallel to the cross beam 12; the longitudinal direction refers to the longitudinal direction of the bogie built into the axle box, that is, along the length of the side beam 11 or the direction parallel to the side beam 11; the vertical direction refers to the vertical direction of the bogie built into the axle box, that is, the vertical direction, which is the direction perpendicular to the lateral and longitudinal directions of the side beam 11 respectively.

[0072] In other words, in this embodiment, the axle box 2 is located inside the side beam 11 of the frame 1 to form an axle box-in-house bogie. After the axle box is built in, the installation space is limited. In this embodiment, the brake caliper hanger 31 is designed with a horizontally flat structure, which reduces the horizontal dimension of the brake caliper hanger 31. This helps to reduce the horizontal dimension of the brake caliper mounting seat 3 used to install the brake caliper hanger 31. After the horizontal dimension of the brake caliper mounting seat 3 is reduced, the part that fixes the brake caliper hanger 31 vertically is reduced. In order to achieve stable fixation of the brake caliper hanger 31, this embodiment uses vertical positioning fasteners 32 and horizontal positioning fasteners 33 to connect the brake caliper hanger 31 and the brake caliper mounting seat 3 at the same time, so as to improve the connection strength between the brake caliper hanger 31 and the brake caliper mounting seat 3. Therefore, reliable installation of the brake caliper 34 is achieved while saving the upper installation space of the brake caliper 34.

[0073] Furthermore, such as Figure 5 As shown, to further save space, in some embodiments, the top of the brake caliper mounting base 3 is provided with a tread cleaner mounting part 311 for fixing the tread cleaner 4. That is, in this embodiment, the tread cleaner mounting part 311 for fixing the tread cleaner 4 is integrated into the brake caliper mounting base 3, so that the brake caliper mounting base 3 has the function of fixing the brake caliper hanger 31 while also fixing the tread cleaner 4. This achieves the integration of the mounting structure of the tread cleaner 4 and the brake caliper 34, making the structure compact and thus further saving installation space.

[0074] It should be noted that this embodiment does not limit the specific structure of the brake caliper mounting base 3, as long as it can enable the installation of the brake caliper hanger 31 and / or the tread cleaner 4. In some embodiments, the brake caliper mounting base 3 is a square columnar structure. Furthermore, this embodiment does not limit the specific connection method between the brake caliper mounting base 3 and the side beam 11, as long as it allows the brake caliper mounting base 3 to be positioned on the outside of the side beam 11. For example, in some embodiments, the brake caliper mounting base 3 is welded to the side beam 11.

[0075] Additionally, please refer to Figure 1 and Figure 6 To further reduce the lateral dimension, in some embodiments, the axle box-integrated bogie also includes a drive unit 5. The drive unit 5 includes a traction motor 51, a gearbox 52, and a flexible floating gear coupling 53. The traction motor 51 and gearbox 52 are both located on the crossbeam 12, and the flexible floating gear coupling 53 connects the traction motor 51 and the gearbox 52. The traction motor 51, gearbox 52, and flexible floating gear coupling 53 are all located between the two side beams 11. In other words, this embodiment avoids increasing the lateral dimension by placing the three structural components of the drive unit 5 between the two side beams 11.

[0076] It should be noted that when the axle box-integrated bogie is equipped with a drive unit 5, the axle box-integrated bogie becomes a motor car bogie, such as... Figure 1 and Figure 2 As shown; however, when the drive unit 5 is not installed on the axle box-integrated bogie, the axle box-integrated bogie becomes a trailer bogie, as shown. Figure 3 and Figure 4 As shown; correspondingly, when the axle box-integrated bogie becomes the power car bogie, the power car bogie has a power car frame, such as... Figure 11 and Figure 12 As shown; when the axle box-integrated bogie becomes a trailer bogie, the trailer bogie has a trailer frame, such as Figure 13 and Figure 14 As shown. That is, apart from the drive unit 5, the other structures of the axle box-integrated bogie are interchangeable for both motor car bogies and trailer bogies.

[0077] To ensure the installation of the drive unit 5 in a confined lateral space, in some embodiments, the traction motor 51 has a lateral groove, into which a portion of the flexible floating gear coupling 53 extends. In other words, this embodiment designs the structure of the traction motor 51 to have a lateral groove, allowing a portion of the flexible floating gear coupling 53 to extend into the groove, resulting in a lateral overlap between the flexible floating gear coupling 53 and the traction motor 51, thereby reducing the lateral space required. It should be noted that by increasing the radial dimension of the traction motor 51 and rationally arranging its internal structural components, a lateral groove can be created within the existing lateral dimensions of the traction motor 51 to accommodate a portion of the flexible floating gear coupling 53.

[0078] In addition, such as Figure 6 As shown, to further reduce the lateral space, in some embodiments, a large gear 521 is provided inside the gearbox 52. The large gear 521 includes a mounting portion 5211 and a meshing portion 5212 connected to the mounting portion 5211. The meshing portion 5212 and the mounting portion 5211 are in different lateral positions. That is, in this embodiment, the mounting portion 5211 and the meshing portion 5212 of the large gear 521 do not extend radially along the same lateral position. Instead, the mounting portion 5211 is laterally offset relative to the meshing portion 5212. In this way, while ensuring that the meshing portion 5212 of the large gear 521 can normally mesh and transmit power with the small gear in the gearbox 52, it is beneficial to realize the installation of the large gear 521 and the axle in a small lateral space.

[0079] Additionally, please refer to Figure 6 and Figure 12 To increase lateral space, in some embodiments, the crossbeam 12 is provided with a gearbox hanger 522. The gearbox hanger 522 is an integral forging with an arc-shaped portion 5221, making it a structure that is wide at both ends and narrows in the middle along the longitudinal direction. It is understood that in related technologies, the gearbox hanger 522 is a box-shaped structure, occupying a large overall space. This application uses an integral forging, resulting in a compact structure and smaller space occupation. Furthermore, the integral forging has an arc-shaped portion 5221, making the gearbox hanger 522 a structure that is wide at both ends and narrows in the middle along the longitudinal direction. That is, this embodiment reduces the lateral structural dimensions of the middle portion of the gearbox hanger 522 along the longitudinal direction, thereby expanding the lateral space and facilitating the installation of other structural components.

[0080] In some embodiments, the axle box-integrated bogie includes an axle end speed sensor, a grounding device, and a signal sensor, all of which are located in the gearbox 52, or inside the axle box body 2. It should be noted that when the axle box-integrated bogie is a motor vehicle bogie, including the drive unit 5, the axle end speed sensor, grounding device, and signal sensor can all be located in the gearbox 52, allowing both the axle end speed sensor and the signal sensor to detect the rotational speed of the large gear 521 or small gear in the gearbox 52 to reflect the axle speed. When the axle box-integrated bogie is a trailer bogie, excluding the drive unit 5, the axle end speed sensor, grounding device, and signal sensor can all be located inside the axle box body 2, allowing both the axle end speed sensor and the signal sensor to detect the axle speed inside the axle box body 2 to reflect the axle speed. This design avoids the axle end extending beyond the side beam 11, thereby further reducing lateral space.

[0081] Please refer to Figure 1 , Figure 3 , Figure 7 and Figure 8 In some embodiments, a rubber node assembly 61 and two steel spring assemblies 62 are provided between the top of the axle box 2 and the side beam 11. The rubber node assembly 61 is used to provide longitudinal and lateral positioning stiffness and release vertical stiffness. The steel spring assemblies 62 are used to provide vertical stiffness, and the two steel spring assemblies 62 are arranged longitudinally on both sides of the rubber node assembly 61. A positioning tie rod 63 is provided between the bottom of the axle box 2 and the side beam 11. The positioning tie rod 63 is used to provide longitudinal stiffness and release vertical and lateral stiffness.

[0082] In other words, the rubber node assembly 61, the two steel spring assemblies 62, and the positioning tie rod 63 form a suspension system. It can be understood that the steel spring assembly 62 provides vertical stiffness and releases lateral and longitudinal stiffness, while the rubber node assembly 61 provides lateral and longitudinal stiffness and releases vertical stiffness. Thus, by setting the steel spring assembly 62 and the rubber node assembly 61, the vertical stiffness is decoupled from the lateral and longitudinal stiffness, respectively. In addition, the positioning tie rod 63 provides longitudinal stiffness and releases vertical and lateral stiffness. That is, the lateral stiffness of the primary suspension system is provided by the rubber node assembly 61, and the longitudinal stiffness of the primary suspension system is jointly provided by the rubber node assembly 61 and the positioning tie rod 63. The positioning tie rod 63 can supplement the lack of longitudinal stiffness without participating in the lateral positioning constraint. In other words, the primary suspension system achieves decoupling of vertical, lateral and longitudinal stiffness, so that the stiffness in the vertical, longitudinal and lateral directions can be achieved independently. This satisfies the requirement that the primary suspension system has a small vertical stiffness, a large longitudinal stiffness and a moderate lateral stiffness between the vertical and longitudinal stiffness, so as to ensure sufficient wheel set axle box positioning stiffness and a small vertical stiffness, guarantee the vehicle's critical speed and ride comfort, and meet the requirements of high-speed stability and smoothness of the vehicle.

[0083] Furthermore, in this embodiment of the invention, both the rubber node assembly 61 and the two steel spring assemblies 62 are located on the top of the axle box 2, making the rubber node assembly 61 a top-mounted rubber node assembly 61 and the steel spring assembly 62 a top-mounted steel spring assembly 62. This arrangement results in a compact structure and small footprint. Additionally, the top-mounted rubber node assembly 61 and steel spring assembly 62 facilitate operation from above the frame 1, particularly suitable for axle box-integrated bogies where the installation of the primary suspension system is limited by the drive system, thus improving process convenience. Moreover, the presence of two steel spring assemblies 62, located on opposite sides of the rubber node assembly 61 along the longitudinal direction, allows for a large vertical load-bearing capacity within a limited lateral space. Furthermore, the steel spring assembly 62 exhibits linear vertical stiffness.

[0084] Please refer to Figure 7 and Figure 8To accommodate the varying working heights of the steel spring assembly 62 under different loads, in some embodiments, an adjusting shim 64 is provided between the steel spring assembly 62 and the top of the axle box 2. The steel spring assembly 62 includes an upper clamping plate 621, a lower clamping plate 622, and a steel spring 623 connected between the upper clamping plate 621 and the lower clamping plate 622. The upper clamping plate 621 is connected to the frame 1 and has a through hole 6211. The upper end of the lower clamping plate 622 has a first threaded hole 6221 for screwing in a process bolt 624, allowing the adjusting shim 64 to be added, removed, or replaced by changing the vertical position of the lower clamping plate 622. In other words, this embodiment uses adjusting shims 64 of different thicknesses or in different numbers between the steel spring assembly 62 and the top of the axle box 2 to allow the steel spring assembly 62 to adapt to different loads and thus have different working heights. Specifically, when the adjusting shim 64 needs to be adjusted, the process bolt 624 is passed through the through hole 6211 of the upper clamping plate 621 and screwed into the first threaded hole 6221 at the upper end of the lower clamping plate 622. The engagement of the process bolt 624 with the first threaded hole 6221 allows the lower clamping plate 622 to be lifted when the process bolt 624 is turned, thereby enabling the addition, removal, or replacement of the adjusting shim 64 within the small space. This structure allows for adjustment of the adjusting shim 64 from above the frame 1, making the adjustment of the lower adjusting shim 64 within the small space convenient.

[0085] Further, please refer to Figure 7 and Figure 8 In some embodiments, a vibration-damping rubber 67 is provided between the adjusting pad 64 and the lower clamping plate 622. That is, in this embodiment, the vibration-damping rubber 67 is used to dampen the steel spring assembly 62, thereby improving the vertical vibration damping effect.

[0086] To further improve the vertical vibration reduction effect, please refer to... Figure 7 and Figure 8 In some embodiments, a vertical damper 66 is provided between the frame 1 and the axle box 2.

[0087] In addition, the above embodiments do not limit the specific structure of the rubber node assembly 61, as long as the rubber node assembly 61 can be connected to the frame 1 and the axle box 2 respectively.

[0088] like Figure 7 , Figure 8 and Figure 10As shown, in some embodiments, the rubber node assembly 61 includes a mandrel 611, a rubber part 612, a frame-side mounting seat 613, and a shaft box-side mounting seat 614. The upper end of the mandrel 611 has a tapered guide post. The rubber part 612 is disposed on the outer periphery of the mandrel 611. The frame-side mounting seat 613 is connected to the frame 1, and the frame-side mounting seat 613 is provided with an inner conical hole, which is connected to the tapered guide post. The shaft box-side mounting seat 614 is connected to the shaft box body 2 and is connected to the outer periphery of the rubber part 612. The shaft box-side mounting seat 614 is provided with a positioning hole, and the shaft box body 2 is provided with a positioning boss 21 that is positioned in conjunction with the positioning hole. In other words, in this embodiment, the rubber node assembly 61 is connected to the frame 1 through the frame-side mounting base 613 and to the axle box body 2 through the axle box-side mounting base 614. At the same time, the frame-side mounting base 613 is connected to the rubber node through the inner conical hole and the conical guide post. The axle box-side mounting base 614 is connected to the outer periphery of the rubber part 612. In addition, during installation, the axle box-side mounting base 614 and the axle box body 2 are quickly installed and positioned through the cooperation of the positioning hole and the positioning boss 21. At the same time, the positioning and anti-shear functions are achieved through the cooperation of the positioning boss 21 and the positioning hole.

[0089] To improve the reliability of the connection, in some embodiments, the axle box side mounting seat 614 is interference-fitted with the outer periphery of the rubber part 612; the inner conical hole is interference-fitted with the conical guide post.

[0090] Additionally, please refer to Figure 7 and Figure 10To further improve the reliability of the connection and the ease of disassembly, in some embodiments, the frame-side mounting base 613 is provided with a first process removal hole communicating with the inner conical hole, the top of the conical guide post is provided with a second threaded hole, and the rubber node assembly 61 also includes a first mounting bolt 616. The first mounting bolt 616 passes through the first process removal hole and connects with the second threaded hole. The head of the first mounting bolt 616 is pressed onto the frame 1 through a pressure cap 617. The first process removal hole is used to allow the first process removal component to pass through during disassembly, so as to apply a vertically downward force to the top of the mandrel 611, so that the mandrel 611 is separated from the frame-side mounting base 613. That is to say, in this embodiment, the first mounting bolt 616 is connected to the second threaded hole, and the head of the first mounting bolt 616 is pressed onto the frame 1 through the pressure cap 617, which improves the tightness of the fit between the conical guide post and the inner conical hole, thereby improving the reliability of the connection between the rubber node assembly 61 and the frame 1. In addition, to facilitate the disassembly of the rubber node assembly 61, this embodiment provides a first process removal hole on the mounting base 613 on the frame side. During disassembly, the first process removal component passes through the first process removal hole, causing the first process removal hole to abut against the top of the mandrel 611 and apply a downward vertical force to the top of the mandrel 611, thereby disengaging the mandrel 611 from the inner conical hole. It should be noted that this embodiment does not limit the specific structure of the first process removal hole and the first process removal component. In some embodiments, the first process removal hole is a threaded hole, and the first process removal component is a process removal bolt. By screwing the process removal bolt into the threaded hole, the end of the process removal bolt faces downward and pushes against the top of the mandrel 611, thereby separating the mandrel 611 from the inner conical hole.

[0091] Furthermore, the above embodiments do not limit the connection method between the axle box side mounting base 614 and the axle box body 2, as long as the connection between the two can be achieved. In some embodiments, the axle box side mounting base 614 and the axle box body 2 are connected by fasteners 6142, for example, by a second mounting bolt.

[0092] Additionally, please refer to Figure 9 To facilitate the disassembly of the axle box side mounting base 614 and the axle box body 2, in some embodiments, the axle box side mounting base 614 is provided with a second process removal hole 6141, which allows a second process removal component to pass through and push against the axle box body 2 during disassembly. Further, in some embodiments, the second process removal hole 6141 is a threaded hole, and the second process removal component is a process removal bolt. It should be noted that this embodiment does not limit the specific number of second process removal holes 6141; the number of second process removal holes 6141 can be one or at least two.

[0093] In some embodiments, a preset distance is maintained between the bottom of the spindle 611 and the top of the axle box 2, so that when the vertical displacement of the primary suspension system exceeds a preset value, the spindle 611 contacts and is limited by the axle box 2. In other words, this embodiment limits the vertical displacement of the primary suspension system by maintaining a preset distance between the bottom of the spindle 611 and the top of the axle box 2. When the vertical displacement of the primary suspension system is less than the preset value, it indicates that the vertical displacement is normal. At this time, the preset distance between the bottom of the spindle 611 and the top of the axle box 2 allows the primary suspension system to generate the required vertical displacement. When the vertical displacement of the primary suspension system exceeds the preset value, it indicates that an abnormal vertical displacement has occurred. The bottom of the spindle 611 contacts the axle box 2, and both stop and limit the vertical displacement, preventing the primary suspension system from continuing to generate vertical displacement and causing an abnormality. That is, the space with the preset distance between the bottom of the spindle 611 and the top of the axle box 2 constitutes the vertical displacement travel space of the primary suspension system.

[0094] To facilitate the installation of the rubber node assembly 61 and the steel spring assembly 62, in some embodiments, the side beam 11 is narrow in the middle and wide at both ends, with the rubber node assembly 61 and the steel spring assembly 62 provided at both ends of the side beam 11. In other words, this embodiment limits the width of the side beam 11, making the width (i.e., the lateral dimension) of the two ends of the side beam 11 larger. This provides more space to accommodate the rubber node assembly 61 and the steel spring assembly 62, improving the reliability of their installation.

[0095] Furthermore, in some embodiments, the middle part of the side beam 11 is a bent structure with a downward arc-shaped concave portion. That is, by making the middle part of the side beam 11 concave, a larger space is formed, which can be used to install other structural components, making the structural layout more compact.

[0096] Further, please refer to Figure 12 and Figure 14To facilitate the installation of the steel spring assembly 62 and the rubber node assembly 61, in some embodiments, the side beam 11 is provided with a spring sleeve 111 and a positioning cylinder 112. The spring sleeve 111 has a hollow groove, and at least a portion of the steel spring assembly 62 is disposed within the spring sleeve 111. The hollow groove is used to limit the upper clamping plate 621 of the steel spring assembly 62 and to allow the fastening bolts or process bolts 624 to pass through. The positioning cylinder 112 is used to install the rubber node assembly 61. In other words, this embodiment achieves the installation of the steel spring assembly 62 by providing a spring sleeve 111 on the side beam 11, enabling rapid installation and positioning of the steel spring assembly 62 and preventing it from falling off. Similarly, by providing a positioning cylinder 112 on the side beam 11, the installation of the rubber node assembly 61 is achieved, enabling rapid installation and positioning of the rubber node assembly 61 and preventing it from falling off.

[0097] In addition, to facilitate the lifting of the wheelset, such as Figure 10 As shown, in some embodiments, a first lifting seat 113 is provided on the inner side of the side beam 11, and a second lifting seat 615 is provided on the outer periphery of the rubber node assembly 61. A lifting rod 65 is also included, which is used to connect to the first lifting seat 113 and the second lifting seat 615 respectively for lifting the axle box 2. In other words, this embodiment proposes to provide a second lifting lug on the outer periphery of the rubber node assembly 61. The lifting of the rubber node assembly 61 via the lifting rod 65 indirectly achieves the lifting function of the axle box 2 and the wheelset located on the axle box 2. This facilitates lifting the axle box 2 in a small space for a bogie with the axle box 2 located inside the frame 1, resulting in a compact structure. Furthermore, the rubber node assembly 61 and the two steel spring assemblies 62 are both located between the top of the axle box 2 and the frame 1, which improves the connection strength between the axle box 2 and the frame 1. Therefore, placing the second lifting lug on the outer periphery of the rubber node assembly 61 can also meet the strength requirements for lifting.

[0098] Furthermore, in some embodiments, the lifting rod 65 includes a first lifting rod and a second lifting rod symmetrically arranged about the rubber node assembly 61. One of the first and second lifting rods is a fixed-length lifting rod, and the other is a length-adjustable lifting rod. For example, the first lifting rod is a fixed-length lifting rod, and the second lifting rod is a length-adjustable lifting rod. That is, in this embodiment, the length of the length-adjustable lifting rod can be adjusted to fit the fixed-length lifting rod, thereby ensuring smoothness during lifting and installation and avoiding the inability to install the first and second lifting rods smoothly due to installation errors. It should be noted that this embodiment does not specifically limit the length adjustment method of the length-adjustable lifting rod, as long as its length is adjustable. For example, in some embodiments, the length-adjustable lifting rod includes a first connecting rod, a second connecting rod, and a double-threaded rod that is threadedly connected to the first and second connecting rods respectively. The first connecting rod is used to connect to the first lifting lug, and the second connecting rod is used to connect to the second lifting lug. By adjusting the thread engagement length of the double-threaded rod with the first and second connecting rods respectively, the length of the length-adjustable lifting rod is adjusted. The structure is simple and easy to implement.

[0099] In addition, such as Figure 9 As shown, in some embodiments, the positioning rod 63 has a bent portion 631. That is, in this embodiment, by giving the positioning rod 63 a bent portion 631, the bent portion 631 avoids the installation space of other components, thus preventing the positioning rod 63 from interfering with other components.

[0100] like Figures 11 to 14 In some embodiments, a longitudinal auxiliary beam 13 extending from the inner side of the side beam 11 is provided in the middle of the side beam 11, and the longitudinal auxiliary beam 13 has a hollow structure; an anti-hunting shock absorber mounting seat 71 extending from the outer side of the side beam 11 is provided in the middle of the side beam 11, and the anti-hunting shock absorber mounting seat 71 is connected to one end of the anti-hunting shock absorber 72. The anti-hunting shock absorber mounting seat 71 includes two symmetrically arranged arc-shaped side surfaces, an arc-shaped bottom surface, and a rectangular outer side surface connected as one piece; an upper cover plate 114 is provided in the middle of the side beam 11, and an air spring 8 is provided in the middle of the upper cover plate 114; the upper cover plate 114 has a first wing extending from the inner side of the side beam 11 and a second wing extending from the outer side of the side beam 11, the first wing forming the top surface of the longitudinal auxiliary beam 13, and the second wing forming the top surface of the anti-hunting shock absorber mounting seat 71.

[0101] Understandably, the longitudinal auxiliary beam 13 is a hollow structure to reduce weight. In some embodiments, the longitudinal auxiliary beam 13 is a hollow steel plate structure, which has a base extending along the plane of the upper cover plate 114 and an installation platform fixed to the base. The installation platform is perpendicular to the base. A bent portion is provided at the edge of the installation platform for overall lifting. The bent portion is used to connect with lifting equipment, and an anti-detachment protrusion is provided at the end of the bent portion. The arrangement of the upper cover plate 114 achieves diversified functions, making its structure compact and its functions concentrated. The anti-hunting shock absorber mounting base 71 is a thin-walled, large-section structure. Four positioning seats are provided on the rectangular outer surface. The positioning seats have threaded holes and positioning grooves for installing the anti-hunting shock absorber 72. The anti-hunting shock absorber mounting base 71 may include a horizontal body connecting plate, a vertical body connecting plate, and an anti-hunting shock absorber mounting block. The horizontal body connecting plate is riveted to the bottom surface of the side beam 11, and its back side is designed as a large horizontal body connecting surface for close contact with the side beam of the vehicle chassis. The horizontal body connecting plate typically has several sets of rivet holes for a secure connection to the side beam of the vehicle chassis. The vertical body connecting plate is riveted to the inner side of the side beam of the chassis, and its back side is designed as a large vertical body connecting surface, also connected to the side beam of the chassis by rivets. The vertical body connecting plate not only serves a connecting function but also increases the overall stability of the mounting base. Multiple reinforcing ribs connected to the horizontal body connecting plate are arranged at both ends of the vertical body connecting plate on the side facing away from the side beam of the chassis, and between the multiple rows of rivet holes, further improving the strength of the entire structure. The anti-hunting shock absorber mounting block is located on the bottom surface of the horizontal body connecting plate or on the side beam 11. The anti-hunting shock absorber mounting block consists of a large anti-hunting shock absorber mounting block in the center and four small anti-hunting shock absorber mounting blocks on either side. The large anti-hunting shock absorber mounting block has a cylindrical pin hole in the center for mounting the vehicle connection end of the anti-hunting shock absorber. Several bolt holes are arranged around the cylindrical pin hole for mounting and fixing the anti-hunting shock absorber. Each small anti-hunting shock absorber mounting block also has a bolt hole as needed, serving as an auxiliary fixing and positioning tool. Between the mounting blocks, material is hollowed out in areas of low stress, forming two "+" shaped grooves. This reduces the overall weight of the structure without affecting the overall strength and function of the mounting base. Furthermore, to further reduce weight, square weight-reducing holes can be made on the back of the large anti-hunting shock absorber mounting block. Simultaneously, optimized rounded transitions are used at all corners of the mounting base, with larger rounded transitions in high-stress areas to avoid stress concentration. This allows the entire structure to enhance load-bearing capacity while reducing overall mass, ultimately making full and effective use of materials to achieve optimal design. In addition, the longitudinal auxiliary beam 13 also serves to support the first wing, while the second wing is supported by the anti-hunting damper mounting base 71.The longitudinal auxiliary beam 13 and the anti-hunting shock absorber mounting base 71 jointly support the wing-shaped structure of the upper cover plate 114. The central part of this wing-shaped structure is a circular air spring 8 support. The air spring 8 support is annular and detachably mounted on the upper cover plate 114. The central axis of the air spring 8 support is located at the intersection of the centerline of the side beam 11 in the length direction and the centerline of the side beam 11 in the width direction. This air spring 8 support provides sufficient vertical support to meet the installation requirements of the air spring 8 and can withstand the vertical force exerted on the frame 1 by the vehicle body through the air spring 8.

[0102] In addition, such as Figures 11 to 14 As shown, in some embodiments, the crossbeam 12 includes a first crossbeam 121 and a second crossbeam 122 arranged in parallel. A longitudinal auxiliary beam 13 is connected to the first crossbeam 121 and the second crossbeam 122 at both ends along the longitudinal direction, and is connected to the side beam 11 along the outer side in the transverse direction. That is, in this embodiment, the first crossbeam 121 and the second crossbeam 122 are connected together by the longitudinal auxiliary beam 13, and the longitudinal auxiliary beam 13 strengthens the connection between the side beam 11 and the first crossbeam 121 and the second crossbeam 122, sharing the stress at the connection points between the first crossbeam 121, the second crossbeam 122 and the side beam 11, making the overall structure more reliable.

[0103] In addition, such as Figure 1 and Figure 3 As shown, in some embodiments, the crossbeam 12 includes a first crossbeam 121 and a second crossbeam 122 arranged in parallel, with a central pin assembly 9 between the first crossbeam 121 and the second crossbeam 122; one of the first crossbeam 121 and the second crossbeam 122 is provided with a traction rod 10, which is located on the center line of the frame 1 in the transverse direction; a transverse damper 20 is provided between the bottom of the side beam 11 and the bottom of the central pin assembly 9.

[0104] The traction rod 10 is located on the transverse centerline of the frame 1, which facilitates the traction method of a single traction rod 10, thereby reducing the structural space. The transverse vibration damper 20 is located at the bottom of the frame 1, which also reduces the structural space.

[0105] Additionally, please refer to Figure 1 , Figure 3 , Figure 11 and Figure 13In some embodiments, the length of the first crossbeam 121 is greater than the length of the second crossbeam 122. The portion of the first crossbeam 121 that extends beyond the second crossbeam 122 extends outward from the side beam 11. An integrated mounting base 1211 is provided at the end of the first crossbeam 121 that extends outward from the side beam 11. The integrated mounting base 1211 is provided with a height valve. The first crossbeam 121 has a hollow structure, and an anti-roll torsion bar 30 is inserted inside it. The anti-roll torsion bar 30 extends out from the end of the first crossbeam 121 and is installed on the integrated mounting base 1211.

[0106] In other words, this embodiment integrates the height valve mounting base and the anti-roll torsion bar mounting base into a single structure using an integrated mounting base 1211. The integrated mounting base 1211 is installed on the outer periphery of both ends of the first crossbeam 121, without affecting the installation of the anti-roll torsion bar. This makes the structural layout of the bogie frame 1 more reasonable and compact, facilitating miniaturization. In some embodiments, the integrated mounting base 1211 is an integral forging structure with four mounting holes and grooves for installing the anti-roll torsion bar 30, and one mounting hole for installing the height valve. A boss is provided on the other side, which is embedded inside the tube beam to ensure structural reliability. The anti-roll torsion bar 30 passes through the hollow structure of the first crossbeam 121, making full use of the internal space of the first crossbeam 121 without requiring additional installation space, resulting in a more compact and reasonable structural layout. In addition, setting the first crossbeam 121 as a hollow structure is beneficial to reduce weight and achieve lightweighting; in addition, it can also ensure the normal function of the anti-roll torsion bar 30 while protecting the anti-roll torsion bar 30 from being hit by stones on the line.

[0107] In some embodiments, the integrated mounting base 1211 includes a base body, a height valve mounting position, an anti-roll bar mounting position, and a connecting structure. The base body is the main structure of the integrated mounting base 1211, generally made of metal, and has sufficient strength and rigidity to withstand the weight of the height valve and the anti-roll torsion bar 30, as well as various forces generated during operation. The base body is typically fixed to the first crossbeam 121 by welding, bolting, or other methods. The height valve mounting position on the integrated mounting base 1211 has a dedicated location and fixing structure for installing the height valve; these fixing structures may include bolt holes, slots, or other suitable connection methods to ensure that the height valve can be securely installed on the base body and accurately sense the relative height change between the car body and the bogie, thereby controlling the inflation or deflation of the air spring 8. The torsion bar mounting position on the integrated mounting base 1211 also has an installation position and fixing method for the anti-roll torsion bar 30 and its related components (such as torsion bars, torsion arms, support seats, etc.). For example, the support seat of the torsion bar is fixed by a slot or bracket of a specific shape, so that the anti-roll torsion bar 30 can effectively resist the roll of the vehicle body. The torsion arm is connected to the support seat and other connecting components by means of hinges to transmit the torsional force of the torsion bar; in order to connect the integrated mounting seat 1211 to the first crossbeam 121, some connecting structures, such as connecting rods and pins, are also provided. These connecting structures must ensure that the connection between the integrated mounting seat 1211 and the bogie is firm and reliable, and also allow relative movement within a certain range to adapt to various dynamic changes during vehicle operation.

[0108] like Figure 1 As shown, in some embodiments, the train bogie further includes wheelset assembly 40 and wheel flange lubrication device 50. In some embodiments, the trailer bogie further includes wheelset assembly 40 and sand spreading and obstacle removal device 60.

[0109] In addition to the aforementioned axle box-integrated bogie, the present invention also provides a rail vehicle including the axle box-integrated bogie disclosed in the above embodiments. For the structure of other parts of the rail vehicle, please refer to the relevant technology, which will not be repeated here.

[0110] The key point of this embodiment is that the axle box-integrated bogie disclosed in any of the above embodiments has the same beneficial effects as the axle box-integrated bogies described above.

[0111] It should also be noted that, in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0112] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0113] The axle box-integrated bogie and rail vehicle provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A bogie with an integrated axle box, characterized in that, include: The frame (1) includes two parallel side beams (11) and a crossbeam (12) connecting the two side beams (11). Axle box body (2) is located inside the side beam (11); Brake caliper mounting base (3) is located on the outside of the side beam (11); The brake caliper hanger (31) has a horizontally flattened structure and is connected to the brake caliper mounting base (3) by a vertical positioning fastener (32) with the axial direction being vertical and a horizontal positioning fastener (33) with the axial direction being horizontal. Brake caliper (34) is connected to the bottom of the brake caliper hanger (31); It also includes a drive unit (5), which comprises: A traction motor (51) is mounted on the crossbeam (12); Gearbox (52) is provided on the crossbeam (12); A flexible floating gear coupling (53) is connected between the traction motor (51) and the gearbox (52); The traction motor (51), the gearbox (52) and the flexible floating gear coupling (53) are all located between the two side beams (11); The gearbox (52) is provided with a large gear (521), which includes a mounting part (5211) and a meshing part (5212) connected to the mounting part (5211). The meshing part (5212) and the mounting part (5211) are in different lateral positions, so that the mounting part (5211) and the meshing part (5212) do not extend radially along the same lateral position. The traction motor (51) has a lateral groove, and a portion of the flexible floating gear coupling (53) extends into the groove. Between the top of the axle box body (2) and the side beam (11) is provided: A rubber node assembly (61) is used to provide longitudinal and lateral positioning stiffness and release vertical stiffness; Two steel spring assemblies (62), used to provide vertical stiffness, are arranged longitudinally on both sides of the rubber node assembly (61); the two steel spring assemblies (62) are located above the longitudinal centerline of the axle box body (2); A positioning tie rod (63) is provided between the bottom of the axle box body (2) and the side beam (11). The positioning tie rod (63) is used to provide longitudinal stiffness and release vertical and lateral stiffness. The connection position of the positioning rod (63) and the axle box (2) is located between the vertical center line of the axle box (2) and the longitudinal outer wall of the axle box (2), and the connection position of the positioning rod (63) and the axle box (2) is located below the vertical bottom wall of the axle box (2), and the rubber node assembly (61) is located above the vertical top wall of the axle box (2).

2. The axle box-integrated bogie according to claim 1, characterized in that, The top of the brake caliper mounting base (3) is provided with a tread cleaner mounting part (311) for fixing the tread cleaner (4).

3. The axle box-integrated bogie according to claim 1, characterized in that, The crossbeam (12) is provided with a gearbox hanger (522), which is an integral forging. The gearbox hanger (522) has an arc-shaped part (5221) so that the gearbox hanger (522) has a structure that is wide at both ends and narrows in the middle along the longitudinal direction.

4. The axle box-integrated bogie according to claim 1, characterized in that, It includes a shaft end speed sensor, a grounding device and a signal sensor. The shaft end speed sensor, the grounding device and the signal sensor are all located in the gearbox (52), or the shaft end speed sensor, the grounding device and the signal sensor are all located inside the shaft box body (2).

5. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, An adjusting pad (64) is provided between the steel spring assembly (62) and the top of the axle box (2). The steel spring assembly (62) includes an upper clamping plate (621), a lower clamping plate (622), and a steel spring (623) connected between the upper clamping plate (621) and the lower clamping plate (622). The upper clamping plate (621) is connected to the side beam (11), and the upper clamping plate (621) is provided with a through hole (6211). The upper end of the lower clamping plate (622) is provided with a first threaded hole (6221). The first threaded hole (6221) is used for a process bolt (624) to be screwed in, so as to increase, decrease, or replace the adjusting shim (64) by changing the vertical position of the lower clamping plate (622).

6. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The rubber node assembly (61) includes: Mandrel (611), the upper end of which has a tapered guide post; A rubber part (612) is provided on the outer periphery of the mandrel (611); The frame side mounting base (613) is connected to the side beam (11) and is provided with an inner conical hole, which is connected to the conical guide post. The axle box side mounting seat (614) is connected to the axle box body (2) and to the outer periphery of the rubber part (612), and is provided with a positioning hole. The axle box body (2) is provided with a positioning boss (21) that cooperates with the positioning hole for positioning.

7. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The width of the side beam (11) is narrow in the middle and wide at both ends. Both ends of the side beam (11) are provided with the rubber node assembly (61) and the steel spring assembly (62).

8. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The interior of the side beam (11) is provided with: A spring sleeve (111) is provided with a hollow groove. At least a portion of the steel spring assembly (62) is disposed in the spring sleeve (111). The hollow groove is used to limit the upper clamping plate (621) of the steel spring assembly (62) and to allow fastening bolts or process bolts (624) to pass through. Positioning cylinder (1112) is used to install the rubber node assembly (61).

9. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The inner side of the side beam (11) is provided with a first lifting seat (113), and the outer periphery of the rubber node assembly (61) is provided with a second lifting seat (615), and also includes: A lifting rod (65) is used to connect to the first lifting seat (113) and the second lifting seat (615) respectively to lift the axle box body (2).

10. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The middle part of the side beam (11) is provided with a longitudinal auxiliary beam (13) extending into the inside of the side beam (11), and the longitudinal auxiliary beam (13) has a hollow structure; The middle part of the side beam (11) is provided with an anti-hunting damper mounting seat (71) extending out of the side beam (11). The anti-hunting damper mounting seat (71) is connected to one end of the anti-hunting damper (72). The anti-hunting damper mounting seat (71) includes two symmetrically arranged arc-shaped side surfaces, an arc-shaped bottom surface, and a rectangular outer surface connected as one piece. The side beam (11) is provided with an upper cover plate (114) in the middle, and an air spring (8) is provided in the middle of the upper cover plate (114); the upper cover plate (114) has a first wing extending inside the side beam (11) and a second wing extending outside the side beam (11), the first wing forming the top surface of the longitudinal auxiliary beam (13), and the second wing forming the top surface of the anti-hunting shock absorber mounting base (71).

11. The axle box-integrated bogie according to any one of claims 1-4, characterized in that, The crossbeam (12) includes a first crossbeam (121) and a second crossbeam (122) arranged in parallel, and a central pin (9) is provided between the first crossbeam (121) and the second crossbeam (122). One of the first crossbeam (121) and the second crossbeam (122) is provided with a traction rod (10), which is located on the center line of the frame (1) in the transverse direction; A transverse damper (20) is provided between the bottom of the side beam (11) and the bottom of the center pin assembly (9).

12. The axle box-integrated bogie according to claim 11, characterized in that, The length of the first crossbeam (121) is greater than the length of the second crossbeam (122). The portion of the first crossbeam (121) that extends beyond the second crossbeam (122) extends outward from the side beam (11). The end of the first crossbeam (121) that extends outward from the side beam (11) is provided with an integrated mounting base (1211). The integrated mounting base (1211) is provided with a height valve. The first crossbeam (121) is a hollow structure, and an anti-roll torsion bar (30) is inserted inside it. The anti-roll torsion bar (30) extends out from the end of the first crossbeam (121) and is installed on the integrated mounting base (1211).

13. A rail vehicle, characterized in that, Includes the axle box-integrated bogie as described in any one of claims 1-12.

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