Bogie with built-in axle boxes and railway vehicle

Abstract

The invention discloses a bogie with a built-in axle box and a railway vehicle, and the bogie comprises a framework which comprises two parallel side beams and a cross beam connected between the two side beams; the axle box body is arranged on the inner side of the side beam; the brake clamp mounting seat is arranged on the outer side of the side beam; the brake clamp hanger is of a transverse flat structure and is connected with the brake clamp mounting seat through a vertical positioning fastener with a vertical axial direction and a transverse positioning fastener with a transverse axial direction; and the brake clamp is connected with the bottom of the brake clamp hanger. The braking clamp hanging piece is of a transverse flat structure, the transverse size is reduced, the transverse size of the braking clamp mounting base is reduced, and in order to achieve stable fixing of the braking clamp hanging piece, the braking clamp hanging piece and the braking clamp mounting base are connected through the vertical positioning fastening piece and the transverse positioning fastening piece at the same time; on the basis that the installation space of the upper portion of the brake clamp is saved, reliable installation of the brake clamp is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bogies, and more specifically, to a bogie with an axle box built in. In addition, the present invention also relates to a rail vehicle comprising the above-mentioned bogie with an axle box built in. Background Art

[0002] In order to adapt to the situation of many small radius curves on inter-city lines, bogies with built-in axle boxes are gradually being used. However, after the axle boxes are built-in, the installation space of other structural parts becomes very limited. For example, in the related art, the installation structure of the brake caliper belongs to a box-type structure, the structure is very large, and it occupies a large space. If the installation structure of the brake caliper in the related art is still used, the lateral size of the bogie will be very large, which is not applicable to the bogie with built-in axle boxes.

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

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

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

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A bogie with built-in axle box, comprising:

[0008] A frame, comprising two parallel side beams and a cross beam connected between the two side beams;

[0009] an axle box body, arranged on the inner side of the side beam;

[0010] A brake caliper mounting seat, disposed on the outer side of the side beam;

[0011] The brake caliper hanging piece is a transverse flattened structure, and is connected to the brake caliper mounting seat through a vertical positioning fastener with a vertical axis and a transverse positioning fastener with a transverse axis;

[0012] A brake caliper is connected to the bottom of the brake caliper hanging component.

[0013] Optionally, a tread cleaner mounting portion is provided on the top of the brake caliper mounting seat for fixing a tread cleaner.

[0014] Optionally, a driving device is further included, the driving device comprising:

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

[0016] A gear box, arranged on the crossbeam;

[0017] A flexible floating gear coupling connected between the traction motor and the gear box;

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

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

[0020] Optionally, a large gear is provided in the gear box, and the large gear includes a mounting portion and a meshing portion connected to the mounting portion, and the meshing portion and the mounting portion are at different lateral positions.

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

[0022] Optionally, it includes a shaft end speed sensor, a grounding device and a signal sensor, and the shaft end speed sensor, the grounding device and the signal sensor are all arranged on the gear box, or the shaft end speed sensor, the grounding device and the signal sensor are all arranged on the inner side of the shaft box body.

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

[0024] Rubber node assembly, used to provide longitudinal and lateral positioning stiffness and release vertical stiffness;

[0025] Two steel spring assemblies, used for providing vertical stiffness, are arranged on both sides of the rubber node assembly in the longitudinal direction;

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

[0027] Optionally, an adjustment pad is provided between the steel spring assembly and the top of the axle box body;

[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 is provided with a through hole. The upper end of the lower clamping plate is provided with a first threaded hole. The first threaded hole is used for screwing in a process bolt so as to increase, decrease or replace the adjustment pad by changing the vertical position of the lower clamping plate.

[0029] Optionally, the rubber node assembly includes:

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

[0031] A rubber portion, disposed on the outer periphery of the core shaft;

[0032] A frame side mounting seat connected to the side beam and provided with an inner conical hole, wherein the inner conical hole is cooperatively connected with the conical guide column;

[0033] The axle box side mounting seat is connected to the axle box body and 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 width of the side beam is narrow in the middle and wide at both ends, and the rubber node assembly and the steel spring assembly are provided at both ends of the side beam.

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

[0036] A spring sleeve, wherein the spring sleeve is provided with a hollow groove, at least part of the steel spring assembly is arranged in the spring sleeve, and 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, a first lifting seat is provided on the inner side of the side beam, and a second lifting seat is provided on the outer periphery of the rubber node assembly, further comprising:

[0039] A lifting rod is used to be connected 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 is a hollow structure;

[0041] The middle part of the side beam is provided with an anti-snaking shock absorber mounting seat extending outward from the side beam, the anti-snaking shock absorber mounting seat is connected to one end of the anti-snaking shock absorber, and the anti-snaking shock absorber mounting seat includes two symmetrically arranged arcuate side surfaces, an arcuate bottom surface and a rectangular outer side surface connected as one body;

[0042] An upper cover plate is provided in the middle of the side beam, and an air spring is provided in the middle of the upper cover plate; the upper cover plate has a first wing extending from the inner side of the side beam and a second wing extending from the outer side of the side beam, the first wing forms the top surface of the longitudinal auxiliary beam, and the second wing forms the top surface of the anti-snaking shock absorber mounting seat.

[0043] Optionally, the crossbeam comprises a first crossbeam and a second crossbeam arranged in parallel, and a center pin is provided between the first crossbeam and the second crossbeam;

[0044] One of the first cross beam and the second cross beam 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 lateral vibration damper is arranged between the bottom of the side beam and the bottom formed by the center pin.

[0046] Optionally, the length of the first cross beam is greater than that of the second cross beam, a portion of the first cross beam that exceeds the second cross beam extends outward from the side beam, an end portion of the first cross beam 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 cross beam is a hollow structure, in which an anti-roll torsion bar is inserted. The anti-roll torsion bar passes through the end of the first cross beam and is installed on the integrated mounting seat.

[0048] A rail vehicle comprises any one of the above-mentioned bogies with built-in axle boxes.

[0049] The axle box built-in bogie provided by the present invention arranges the axle box body on the inner side of the frame side beam to form an axle box built-in bogie. After the axle box is built-in, the installation space is limited. This embodiment reduces the lateral size of the brake caliper hanger by designing the brake caliper hanger as a transverse flattened structure, which is beneficial to reducing the lateral size of the brake caliper mounting seat used to install the brake caliper hanger. After the lateral size of the brake caliper mounting seat is reduced, the part from which the brake caliper hanger is vertically fixed is reduced. In order to achieve stable fixation of the brake caliper hanger, this embodiment utilizes vertical positioning fasteners and transverse positioning fasteners to simultaneously connect the brake caliper hanger and the brake caliper mounting seat to improve the connection strength between the brake caliper hanger and the brake caliper mounting seat. Therefore, on the basis of saving the upper installation space of the brake caliper, reliable installation of the brake caliper is achieved.

[0050] The rail vehicle provided by the present invention comprises the above-mentioned bogie with built-in axle box, and has the same beneficial effects as the bogie with built-in axle box. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0052] Figure 1A schematic structural diagram of a bogie with an internal axle box provided in a specific embodiment of the present invention when the bogie is a motor vehicle bogie;

[0053] Figure 2 for Figure 1 Bottom view of

[0054] Figure 3 A schematic structural diagram of a trailer bogie when the axle box built-in bogie provided in a specific embodiment of the present invention is a trailer bogie;

[0055] Figure 4 for Figure 3 Bottom view of

[0056] Figure 5 is a schematic diagram of a brake caliper mounting structure;

[0057] Figure 6 is a schematic diagram of the structure of the driving device;

[0058] Figure 7 It is a cross-sectional view of a suspension system;

[0059] Figure 8 This is a cross-sectional view of a suspension system when adjusting the adjustment pad;

[0060] Fig. 9 for Figure 7 A top view of

[0061] Fig.10 It is a cross-sectional view of the assembled rubber node assembly and the length-adjustable suspension rod;

[0062] Fig.11 This is a structural diagram of the EMU frame;

[0063] Fig.12 for Fig.11 Bottom view of

[0064] Fig.13 It is a structural diagram of the trailer frame;

[0065] Fig.14 for Fig.13 Bottom view of .

[0066] Reference numerals:

[0067] 1-frame; 11-side beam; 111-spring sleeve; 112-positioning cylinder; 113-first lifting seat; 114-upper cover; 12-crossbeam; 121-first crossbeam; 1211-integrated mounting seat; 122-second crossbeam; 13-longitudinal auxiliary beam; 2-axle box; 21-positioning boss; 3-brake caliper mounting seat; 31-brake caliper hanging member; 311-tread cleaner mounting portion; 3 2-vertical positioning fastener; 33-lateral positioning fastener; 34-brake caliper; 4-tread sweeper; 5-driving device; 51-traction motor; 511-traction motor seat; 52-gear box; 521-large gear; 5211-installation part; 5212-meshing part; 522-gear box hanger; 5221-arc part; 53-flexible floating gear coupling; 61-rubber node assembly; 611- Mandrel; 612-rubber part; 613-frame side mounting seat; 614-axle box side mounting seat; 6141-second process withdrawal hole; 6142-fastener; 615-second lifting seat; 616-first mounting bolt; 617-pressure cover; 62-steel spring assembly; 621-upper clamp; 6211-through hole; 622-lower clamp; 6221-first threaded hole; 623-steel spring; 624-process Bolt; 63-positioning rod; 631-bending part; 64-adjusting pad; 65-hanging rod; 66-vertical shock absorber; 67-anti-vibration rubber; 71-anti-snaking shock absorber mounting seat; 72-anti-snaking shock absorber; 8-air spring; 9-center pin assembly; 10-traction rod; 20-lateral shock absorber; 30-anti-roll torsion bar; 40-wheel set assembly; 50-wheel rim lubrication device; 60-sand spreading obstacle removal device. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] The core of the present invention is to provide a bogie with built-in axle box, which can realize the installation of brake calipers in a small structural space. Another core of the present invention is to provide a rail vehicle including the above bogie with built-in axle box, which can realize the installation of brake calipers in a small structural space.

[0070] Please refer to Figures 1 to 5 , Figures 11 to 14 The embodiment of the present invention provides a bogie with an internal axle box, comprising a frame 1, an axle box body 2, a brake clamp mounting seat 3 (such as Fig.11 and Fig.13As shown), a brake caliper hanger 31 and a brake caliper 34, the frame 1 includes two parallel side beams 11 and a cross beam 12 connected between the two side beams 11; the axle box 2 is arranged on the inner side of the side beam 11; the brake caliper mounting seat 3 is arranged on the outer side of the side beam 11; the brake caliper hanger 31 is a transverse flattened structure, and is connected to the brake caliper mounting seat 3 by a vertical positioning fastener 32 with a vertical axis and a transverse positioning fastener 33 with a transverse axis; the brake caliper 34 is connected to the bottom of the brake caliper hanger 31.

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

[0072] That is to say, in the present embodiment, the axle box body 2 is arranged on the inner side of the side beam 11 of the frame 1 to form an axle box built-in bogie. After the axle box is built-in, the installation space is limited. In the present embodiment, the lateral dimension of the brake caliper hanger 31 is reduced by designing the brake caliper hanger 31 as a transverse flattened structure, which is conducive to reducing the lateral dimension of the brake caliper mounting seat 3 used to install the brake caliper hanger 31. After the lateral dimension of the brake caliper mounting seat 3 is reduced, the part from which the brake caliper hanger 31 is vertically fixed is reduced. In order to achieve stable fixation of the brake caliper hanger 31, the present embodiment uses a vertical positioning fastener 32 and a transverse positioning fastener 33 to simultaneously connect the brake caliper hanger 31 and the brake caliper mounting seat 3 to improve the connection strength between the brake caliper hanger 31 and the brake caliper mounting seat 3. Therefore, on the basis of saving the upper installation space of the brake caliper 34, the reliable installation of the brake caliper 34 is achieved.

[0073] Furthermore, if Figure 5 As shown, in order to further save space, in some embodiments, a tread cleaner installation portion 311 is provided on the top of the brake caliper mounting seat 3 for fixing the tread cleaner 4. That is to say, in this embodiment, the tread cleaner installation portion 311 for fixing the tread cleaner 4 is integrated into the brake caliper mounting seat 3, so that the brake caliper mounting seat 3 has the function of fixing the brake caliper hanging member 31 and the tread cleaner 4, realizing the integration of the installation structure of the tread cleaner 4 and the brake caliper 34, making the structure compact, thereby further saving the installation space.

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

[0075] Also, please refer to Figure 1 and Figure 6 In order to further reduce the transverse dimension, in some embodiments, the axle box built-in bogie further includes a drive device 5, which includes a traction motor 51, a gear box 52 and a flexible floating gear coupling 53. The traction motor 51 and the gear box 52 are both arranged on the cross beam 12, and the flexible floating gear coupling 53 is connected between the traction motor 51 and the gear box 52; the traction motor 51, the gear box 52 and the flexible floating gear coupling 53 are all arranged between the two side beams 11. In other words, in this embodiment, the three structural components of the drive device 5 are arranged between the two side beams 11 to avoid increasing the transverse dimension of the drive device 5 during installation.

[0076] It should be noted that when the axle box built-in bogie is installed with a driving device 5, the axle box built-in bogie becomes a motor vehicle bogie. Figure 1 and Figure 2 When the axle box built-in bogie is not installed with the drive device 5, the axle box built-in bogie becomes a trailer bogie, such as Figure 3 and Figure 4 Correspondingly, when the axle box has a built-in bogie to become a motor vehicle bogie, the motor vehicle bogie has a motor vehicle frame, such as Fig.11 and Fig.12 As shown; when the axle box is built into the bogie to become a trailer bogie, the trailer bogie has a trailer frame, such as Fig.13 and Fig.14 That is, except the driving device 5, the other structures of the axle box built-in bogie can be common to the motor vehicle bogie and the trailer bogie.

[0077] In order to ensure the installation of the drive device 5 in a small lateral space, in some embodiments, the traction motor 51 has a groove in the lateral direction, and part of the structure of the flexible floating gear coupling 53 extends into the groove. That is to say, in this embodiment, the traction motor 51 is designed to have a lateral groove, so that part of the structure of the flexible floating gear coupling 53 can be extended into the groove, so that the flexible floating gear coupling 53 and the traction motor 51 have an overlapping structure in the lateral direction, thereby reducing the lateral space. It should be noted that the radial size of the traction motor 51 can be expanded and the internal structural parts of the traction motor 51 can be reasonably arranged so that the traction motor 51 can leave a lateral groove on the basis of the existing lateral size to install part of the structure of the flexible floating gear coupling 53.

[0078] In addition, if Figure 6 As shown, in order to further reduce the lateral space, in some embodiments, a large gear 521 is provided in the gear box 52, and the large gear 521 includes a mounting portion 5211 and a meshing portion 5212 connected to the mounting portion 5211, and the meshing portion 5212 is at a different lateral position from the mounting portion 5211. That is, in this embodiment, the mounting portion 5211 and the meshing portion 5212 of the large gear 521 do not radially extend along the same lateral position, but the mounting portion 5211 is laterally offset relative to the meshing portion 5212, so that, on the basis of ensuring that the meshing portion 5212 of the large gear 521 can normally mesh with the small gear in the gear box 52, it is conducive to the installation of the large gear 521 and the axle in a small lateral space.

[0079] Also, please refer to Figure 6 and Fig.12 In order to increase the lateral space, in some embodiments, the crossbeam 12 is provided with a gearbox hanger 522, which is an integral forging, and the gearbox hanger 522 has an arcuate portion 5221, so that the gearbox hanger 522 is a structure with wide ends and a contracted middle in the longitudinal direction. It can be understood that in the related art, the gearbox hanger 522 is a box-shaped structure, which occupies a large space as a whole, while the present application adopts an integral forging, which makes the structure compact and occupies a small space. Furthermore, the integral forging has an arcuate portion 5221, so that the gearbox hanger 522 is a structure with wide ends and a contracted middle in the longitudinal direction, that is, the present embodiment reduces the structural size of the middle part of the gearbox hanger 522 in the longitudinal direction in the lateral direction, thereby expanding the lateral space, which is conducive to the installation of other structural parts.

[0080] In addition, in some embodiments, the axle box built-in bogie includes an axle end speed sensor, a grounding device and a signal sensor, and the axle end speed sensor, the grounding device and the signal sensor are all arranged in the gear box 52, or the axle end speed sensor, the grounding device and the signal sensor are all arranged on the inner side of the axle box body 2. It should be noted that when the axle box built-in bogie is a motor vehicle bogie, at this time, it includes a drive device 5, and the axle end speed sensor, the grounding device and the signal sensor can be arranged in the gear box 52, so that the axle end speed sensor and the signal sensor can detect the rotation speed of the large gear 521 or the small gear in the gear box 52 to reflect the axle speed; when the axle box built-in bogie is a trailer bogie, at this time, it does not include a drive device 5, and the axle end speed sensor, the grounding device and the signal sensor can be arranged on the inner side of the axle box body 2, so that the axle end speed sensor and the signal sensor can detect the axle speed inside the axle box body 2 to reflect the axle speed. This solution can avoid the axle end of the axle extending outside the side beam 11, thereby further reducing the 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 body 2 and the side beam 11, and the rubber node assembly 61 is used to provide longitudinal and lateral positioning stiffness and release vertical stiffness; the steel spring assembly 62 is used to provide vertical stiffness, and the two steel spring assemblies 62 are longitudinally arranged on both sides of the rubber node assembly 61; a positioning rod 63 is provided between the bottom of the axle box body 2 and the side beam 11, and the positioning rod 63 is used to provide longitudinal stiffness and release vertical stiffness and lateral stiffness.

[0082] That is to say, the rubber node assembly 61, the two steel spring assemblies 62 and the positioning rod 63 form a suspension system. It can be understood that the steel spring assembly 62 provides vertical stiffness and releases lateral stiffness and longitudinal stiffness, and the rubber node assembly 61 provides lateral stiffness and longitudinal stiffness and releases vertical stiffness. It can be seen that by setting the steel spring assembly 62 and the rubber node assembly 61, the vertical stiffness is decoupled from the lateral stiffness and the longitudinal stiffness respectively. In addition, the positioning rod 63 provides longitudinal stiffness and releases vertical stiffness 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 provided by the rubber node assembly 61 and the positioning rod 63. The positioning rod 63 can make up for the lack of longitudinal stiffness without participating in the lateral positioning constraint. That is, the primary suspension system realizes the decoupling of vertical stiffness, lateral stiffness and longitudinal stiffness, and can make the stiffness in the three directions of vertical, longitudinal and lateral be realized independently, thereby satisfying the primary suspension system with smaller vertical stiffness, larger longitudinal stiffness and more moderate lateral stiffness between the vertical stiffness and the longitudinal stiffness, so as to ensure sufficient wheelset axle box positioning stiffness and smaller vertical stiffness, ensure the critical speed and ride comfort of the vehicle, and meet the high-speed stability and smoothness requirements of the vehicle.

[0083] In addition, in the embodiment of the present invention, the rubber node assembly 61 and the two steel spring assemblies 62 are both arranged on the top of the axle box body 2, so that the rubber node assembly 61 becomes an axle box top rubber node assembly 61, and the steel spring assembly 62 becomes an axle box top steel spring assembly 62. This arrangement has a compact structure and occupies a small space. In addition, the axle box top rubber node assembly 61 and the axle box top steel spring assembly 62 are also conducive to operating the rubber node assembly 61 and the steel spring assembly 62 from the top of the frame 1, which is particularly suitable for the axle box built-in bogie and the installation of the first suspension system is limited by the drive system, thereby facilitating the improvement of process convenience. Moreover, the number of steel spring assemblies 62 is two, and the two steel spring assemblies 62 are respectively arranged on both sides of the rubber node assembly 61 along the longitudinal direction, which can achieve a larger vertical bearing capacity in a small lateral space. And the steel spring assembly 62 has a linear vertical stiffness.

[0084] Please refer to Figure 7 and Figure 8In order to adapt to the difference in working height of the steel spring assembly 62 under different loads, in some embodiments, an adjustment pad 64 is provided between the steel spring assembly 62 and the top of the shaft box body 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 the upper clamping plate 621 is provided with a through hole 6211, and 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 screwing in a process bolt 624, so as to increase, decrease or replace the adjustment pad 64 by changing the vertical position of the lower clamping plate 622. That is, in this embodiment, by providing different thicknesses or different numbers of adjustment pads 64 between the steel spring assembly 62 and the top of the shaft box body 2, the steel spring assembly 62 can adapt to different loads and have different working heights. Specifically, when the adjustment pad 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 process bolt 624 cooperates with the first threaded hole 6221, so that when the knob process bolt 624 is turned, the lower clamping plate 622 is lifted up, thereby increasing, decreasing or replacing the adjustment pad 64 in the small space. This structure allows the adjustment of the adjustment pad 64 to be achieved by operating from above the frame 1, making the adjustment operation of the adjustment pad 64 in the small space convenient.

[0085] For further information, please refer to Figure 7 and Figure 8 In some embodiments, an anti-vibration rubber 67 is provided between the adjustment pad 64 and the lower clamping plate 622. That is, in this embodiment, the anti-vibration rubber 67 is used to reduce vibration of the steel spring assembly 62, so as to improve the vertical vibration reduction effect.

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

[0087] In addition, the above embodiment does 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 Fig.10As shown, in some embodiments, the rubber node assembly 61 includes a core shaft 611, a rubber portion 612, a frame side mounting seat 613 and an axle box side mounting seat 614, the upper end of the core shaft 611 has a tapered guide column; the rubber portion 612 is arranged on the outer periphery of the core shaft 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, and the inner conical hole is connected with the tapered guide column; the axle box side mounting seat 614 is connected to the axle box body 2 and is connected to the outer periphery of the rubber portion 612, the axle box side mounting seat 614 is provided with a positioning hole, and the axle box body 2 is provided with a positioning boss 21 that cooperates with the positioning hole for positioning. That is to say, in this embodiment, the rubber node assembly 61 is connected to the frame 1 through the frame side mounting seat 613, and is connected to the axle box body 2 through the axle box side mounting seat 614; at the same time, the frame side mounting seat 613 is connected to the rubber node through the connection between the inner tapered hole and the tapered guide column; the axle box side mounting seat 614 is connected to the outer periphery of the rubber part 612; in addition, during installation, the axle box side mounting seat 614 and the axle box body 2 can be quickly installed and positioned by the cooperation between the positioning hole and the positioning boss 21, and at the same time, the positioning and anti-shearing functions are realized by the cooperation between the positioning boss 21 and the positioning hole.

[0089] In order to improve the reliability of the connection, in some embodiments, the axle box side mounting seat 614 is connected to the outer periphery of the rubber part 612 by interference fit; the inner tapered hole is connected to the tapered guide column by interference fit.

[0090] Also, please refer to Figure 7 and Fig.10In order to further improve the reliability of connection and the convenience of disassembly, in some embodiments, the frame side mounting seat 613 is provided with a first process withdrawal hole connected to the inner conical hole, and the top of the conical guide column is provided with a second threaded hole. The rubber node assembly 61 also includes a first mounting bolt 616, which passes through the first process withdrawal hole and is connected to the second threaded hole. The head of the first mounting bolt 616 is pressed on the frame 1 through a pressure cap 617; the first process withdrawal hole is used for the first process withdrawal part to pass through during disassembly, so as to apply a vertical downward force to the top of the core shaft 611, so that the core shaft 611 is separated from the frame side mounting seat 613. That is, 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 on the frame 1 through a pressure cap 617, so as to improve the tightness of the tapered guide column and the inner conical hole, thereby improving the reliability of the connection between the rubber node assembly 61 and the frame 1. In addition, in order to facilitate the disassembly of the rubber node assembly 61, the present embodiment is provided with a first process withdrawal hole on the frame side mounting seat 613. During disassembly, the first process withdrawal piece is passed through the first process withdrawal hole, so that the first process withdrawal hole is pressed against the top of the mandrel 611 and a vertical downward force is applied to the top of the mandrel 611, so that the mandrel 611 is separated from the inner conical hole. It should be noted that the present embodiment does not limit the specific structure of the first process withdrawal hole and the first process withdrawal piece. In some embodiments, the first process withdrawal hole is a threaded hole, and the first process withdrawal piece is a process withdrawal bolt. By screwing the process withdrawal bolt into the threaded hole, the end of the process withdrawal bolt pushes downward against the top of the mandrel 611, so as to achieve separation of the mandrel 611 from the inner conical hole.

[0091] In addition, the above embodiment does not limit the connection mode between the axle box side mounting seat 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 seat 614 is connected to the axle box body 2 through a fastener 6142, for example, through a second mounting bolt.

[0092] Also, please refer to Fig. 9 In order to facilitate the disassembly of the axle box side mounting seat 614 and the axle box body 2, in some embodiments, the axle box side mounting seat 614 is provided with a second process withdrawal hole 6141, which is used for the second process withdrawal part to pass through to push the axle box body 2 during disassembly. Further, in some embodiments, the second process withdrawal hole 6141 is a threaded hole, and the second process withdrawal part is a process withdrawal bolt. It should be noted that the specific number of the second process withdrawal holes 6141 is not limited in this embodiment, and the number of the second process withdrawal holes 6141 can be one or at least two.

[0093] In some embodiments, there is a preset distance between the bottom of the mandrel 611 and the top of the shaft box 2, so that when the vertical displacement of the primary suspension system exceeds the preset value, the mandrel 611 and the shaft box 2 are in contact and limited. That is to say, in this embodiment, the vertical displacement of the primary suspension system is limited by the preset distance between the bottom of the mandrel 611 and the top of the shaft box 2. When the vertical displacement of the primary suspension system is less than the preset value, it indicates that the vertical displacement is a normal displacement of the primary suspension system. At this time, the preset distance between the bottom of the mandrel 611 and the top of the shaft 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 the primary suspension system has an abnormal vertical displacement. The bottom of the mandrel 611 contacts the shaft box 2, and the two stop and limit to prevent the primary suspension system from continuing to generate vertical displacement and abnormality. That is, the space with a preset distance between the bottom of the mandrel 611 and the top of the shaft box 2 constitutes the vertical displacement travel space of the primary suspension system.

[0094] In order to facilitate the installation of the rubber node assembly 61 and the steel spring assembly 62, in some embodiments, the width of the side beam 11 is narrow in the middle and wide at both ends, and the rubber node assembly 61 and the steel spring assembly 62 are provided at both ends of the side beam 11. In other words, this embodiment limits the width of the side beam 11, so that the width (i.e., the lateral dimension) of the two end sections of the side beam 11 is larger, so that more space can be provided to accommodate the rubber node assembly 61 and the steel spring assembly 62, thereby improving the reliability of the installation of the rubber node assembly 61 and the steel spring assembly 62.

[0095] Furthermore, in some embodiments, the middle portion of the side beam 11 is a bent structure having a downward arc-shaped recessed portion, that is, by making the middle portion of the side beam 11 recessed to form a larger space, other structural members can be installed to make the structural layout more compact.

[0096] For further information, please refer to Fig.12 and Fig.14In order to facilitate the installation of the steel spring assembly 62 and the rubber node assembly 61, in some embodiments, a spring sleeve 111 and a positioning sleeve 112 are provided inside the side beam 11. The spring sleeve 111 is provided with a hollow groove. At least part of the steel spring assembly 62 is provided 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 the fastening bolts or process bolts 624 to pass through; the positioning sleeve 112 is used to install the rubber node assembly 61. That is, in this embodiment, by providing the spring sleeve 111 on the side beam 11 to achieve the installation of the steel spring assembly 62, the steel spring assembly 62 can be quickly installed and positioned, and the steel spring assembly 62 can be prevented from falling off. And by providing the positioning sleeve 112 on the side beam 11 to achieve the installation of the rubber node assembly 61, the rubber node assembly 61 can be quickly installed and positioned, and the rubber node assembly 61 can be prevented from falling off.

[0097] In addition, in order to facilitate the lifting of the wheelset, Fig.10 As shown, in some embodiments, a first lifting seat 113 is provided on the inner side of the side beam 11, a second lifting seat 615 is provided on the outer periphery of the rubber node assembly 61, and a suspension rod 65 is further provided, and the suspension rod 65 is used to be connected to the first lifting seat 113 and the second lifting seat 615 respectively, so as to lift the axle box 2. That is to say, this embodiment proposes to set a second lifting ear on the outer periphery of the rubber node assembly 61, and indirectly realize the lifting function of the axle box 2 and the wheelset arranged on the axle box 2 by lifting the rubber node assembly 61 with the suspension rod 65. This is convenient for lifting the axle box 2 in a small space for the axle box built-in bogie in which the axle box 2 is arranged on the inner side of the frame 1, so that the structure is compact. Moreover, the rubber node assembly 61 and the two steel spring assemblies 62 are both arranged 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, setting the second lifting ear on the outer periphery of the rubber node assembly 61 can also meet the strength requirements of lifting.

[0098] Further, in some embodiments, the suspension rod 65 includes a first suspension rod and a second suspension rod symmetrically arranged about the rubber node assembly 61, one of the first suspension rod and the second suspension rod is a fixed-length suspension rod, and the other is a length-adjustable suspension rod. For example, the first suspension rod is a fixed-length suspension rod, and the second suspension rod is a length-adjustable suspension rod, that is, in this embodiment, the length of the adjustable suspension rod can be adjusted so that the length-adjustable suspension rod can be adapted to the fixed-length suspension rod, thereby ensuring the smoothness during the lifting and installation, and avoiding the first suspension rod and the second suspension rod from being unable to be smoothly installed due to installation errors, etc. It should be noted that this embodiment does not specifically limit the length adjustment method of the length-adjustable suspension rod, as long as its length is adjustable. For example, in some embodiments, the length-adjustable suspension rod includes a first connecting rod, a second connecting rod, and a double-headed threaded rod threadedly connected to the first connecting rod and the second connecting rod, respectively, the first connecting rod is used to connect to the first lifting ear, and the second connecting rod is used to connect to the second lifting ear, and by adjusting the length of the double-headed threaded rod threadedly engaged with the first connecting rod and the second connecting rod, respectively, the length of the length-adjustable suspension rod is adjusted. The structure is simple and easy to implement.

[0099] In addition, if Fig. 9 As shown, in some embodiments, the positioning rod 63 has a bent portion 631. That is, in this embodiment, the positioning rod 63 has a bent portion 631, and the bent portion 631 is used to avoid the installation space of other components, thereby avoiding interference between the positioning rod 63 and 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 part of the side beam 11, and the longitudinal auxiliary beam 13 is a hollow structure; an anti-snaking shock absorber mounting seat 71 extending from the outer side of the side beam 11 is provided in the middle part of the side beam 11, and the anti-snaking shock absorber mounting seat 71 is connected to one end of the anti-snaking shock absorber 72, and the anti-snaking 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 body; an upper cover plate 114 is provided in the middle part of the side beam 11, and an air spring 8 is provided in the middle part 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 forms the top surface of the longitudinal auxiliary beam 13, and the second wing forms the top surface of the anti-snaking shock absorber mounting seat 71.

[0101] It is understandable that the longitudinal auxiliary beam 13 is a hollow structure, which can reduce weight. In some embodiments, the longitudinal auxiliary beam 13 is a hollow steel plate structure, and the steel plate structure is provided with a base portion extending along the plane where the upper cover plate 114 is located and a mounting platform fixed to the base portion, and the mounting platform is arranged perpendicular to the base portion. A bending portion is provided at the edge of the mounting platform for realizing the overall lifting function, and the bending portion is used to connect with the lifting equipment, and an anti-slip convex portion is provided at the end of the bending portion. The setting method of the upper cover plate 114 realizes the diversification of the functions of the upper cover plate 114, making the structure of the upper cover plate 114 compact and the functions concentrated. The anti-snaking shock absorber mounting seat 71 is a thin-walled large-section structure as a whole, and four positioning seats are provided on the rectangular outer surface. The positioning seat is provided with threaded holes and positioning grooves for installing the anti-snaking shock absorber 72. The anti-snaking shock absorber mounting seat 71 may include a horizontal body connecting plate, a vertical body connecting plate and an anti-snaking shock absorber mounting block, wherein the horizontal body connecting plate is riveted and fixed to the bottom surface of the side beam 11, and its back is designed as a large horizontal body connecting surface for tightly fitting with the body chassis side beam. The horizontal body connecting plate is usually arranged with a plurality of groups of rivet holes, and a firm connection with the body chassis side beam is achieved by rivets. The vertical body connecting plate is riveted and fixed to the inner side surface of the chassis side beam, and the back is designed as a large vertical body connecting surface, which is also connected to the chassis side beam by rivets. The vertical body connecting plate not only plays a connecting role, but also increases the overall stability of the mounting seat. A plurality of 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 chassis side beam, and between multiple rows of rivet holes, further improving the strength of the entire structure. The anti-snaking shock absorber mounting block is arranged on the bottom surface of the horizontal body connecting plate or on the side beam 11. The anti-snake shock absorber mounting block includes a large anti-snake shock absorber mounting block located in the center and four small anti-snake shock absorber mounting blocks located on both sides thereof. A cylindrical pin hole for mounting the vehicle connection end of the anti-snake shock absorber is arranged in the center of the large anti-snake shock absorber mounting block, and several bolt holes are arranged around the cylindrical pin hole for mounting and fixing the anti-snake shock absorber. A bolt hole is also arranged on the small anti-snake shock absorber mounting block as needed to assist in fixing and positioning. Between each mounting block, the material is hollowed out for the parts with less stress to form two "cross" shaped grooves, which can reduce the weight of the overall structure without affecting the overall strength and function of the mounting seat. In addition, in order to further reduce the weight, a square weight-reducing hole can be opened on the back of the large anti-snake shock absorber mounting block. At the same time, optimized arc transitions are used at each corner of the mounting seat, and large arc transitions are used in high stress areas to avoid stress concentration, so that the entire structure can reduce the overall mass while enhancing the bearing capacity, and finally fully and effectively utilize the material to achieve the optimal design. In addition, the longitudinal auxiliary beam 13 also plays a role in supporting the first wing, and the second wing is supported by the anti-snaking shock absorber mounting seat 71.The longitudinal auxiliary beam 13 and the anti-snaking shock absorber mounting seat 71 jointly support the wing-shaped structure of the upper cover plate 114. The middle part of the wing-shaped structure is a circular air spring 8 support seat. The air spring 8 support seat is a ring-shaped structure and is detachably arranged on the upper cover plate 114. The central axis of the air spring 8 support seat is located at the intersection of the center line of the length direction of the side beam 11 and the center line of the width direction of the side beam 11. The air spring 8 support seat can provide sufficient vertical support to meet the installation requirements of the air spring 8 and can withstand the vertical force applied to the frame 1 by the vehicle body through the air spring 8.

[0102] In addition, if Figures 11 to 14 As shown, in some embodiments, the cross beam 12 includes a first cross beam 121 and a second cross beam 122 arranged in parallel, and the longitudinal auxiliary beam 13 is respectively connected to the first cross beam 121 and the second cross beam 122 at both ends in the longitudinal direction, and the longitudinal auxiliary beam 13 is connected to the side beam 11 along the outer side in the transverse direction. That is, in this embodiment, the first cross beam 121 and the second cross beam 122 are connected together through the longitudinal auxiliary beam 13, and the connection between the side beam 11 and the first cross beam 121 and the second cross beam 122 is strengthened through the longitudinal auxiliary beam 13, and the stress at the connection between the first cross beam 121, the second cross beam 122 and the side beam 11 is shared, so that the overall structure is more reliable.

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

[0104] The traction rod 10 is located on the center line of the frame 1 in the transverse direction, which is conducive to realizing the traction mode of the single traction rod 10, thereby reducing the structural space. The transverse vibration damper 20 is arranged at the bottom of the frame 1, which can also reduce the structural space.

[0105] Also, please refer to Figure 1 , Figure 3 , Fig.11 and Fig.13In some embodiments, the length of the first cross beam 121 is greater than that of the second cross beam 122, and the portion of the first cross beam 121 that exceeds the second cross beam 122 extends out of the outside of the side beam 11. The end of the first cross beam 121 extending out of the outside of the side beam 11 is provided with an integrated mounting seat 1211, and the integrated mounting seat 1211 is provided with a height valve; the first cross beam 121 is a hollow structure, and an anti-roll torsion bar 30 is passed through it. The anti-roll torsion bar 30 passes through the end of the first cross beam 121 and is installed on the integrated mounting seat 1211.

[0106] That is to say, in this embodiment, the height valve mounting seat and the anti-roll torsion bar mounting seat are set as an integrated structure through the integrated mounting seat 1211, and the integrated mounting seat 1211 is installed on the periphery of the two ends of the first crossbeam 121, which will not affect the installation of the anti-roll torsion bar, making the structural layout of the bogie frame 1 more reasonable and the structure more compact, which is conducive to miniaturization. In some embodiments, the integrated mounting seat 1211 is an integral forging structure, which is provided with four mounting holes and grooves required for installing the anti-roll torsion bar 30, and a mounting hole for installing the height valve. A boss is provided on the other side, and the boss is embedded in the interior of the tube beam to ensure the reliability of the structure. The anti-roll torsion bar 30 is passed through the hollow structure of the first crossbeam 121, making full use of the space inside the first crossbeam 121, without occupying additional installation space, making the structural layout more compact and reasonable. In addition, setting the first cross beam 121 as a hollow structure is conducive to reducing mass and achieving lightweight; 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 track stones.

[0107] In some embodiments, the integrated mounting seat 1211 includes a seat body portion, a height valve mounting position, an anti-torsion bar mounting position and a connection structure, wherein the seat body portion is the main structure of the integrated mounting seat 1211, which is generally made of metal material and has sufficient strength and rigidity to bear the weight of the height valve and the anti-roll torsion bar 30 device and various forces generated during operation. The seat body portion is usually fixed to the first crossbeam 121 by welding, bolt connection, etc. The height valve mounting position is provided with a special position and fixing structure on the integrated mounting seat 1211 to install the height valve; these fixing structures may include bolt holes, card slots or other suitable connection methods to ensure that the height valve can be firmly installed on the seat body and can accurately sense the relative height change between the car body and the bogie, thereby realizing the control of the inflation or deflation of the air spring 8; the torsion bar mounting position 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.) on the integrated mounting seat 1211. 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 play a role in resisting the rolling of the vehicle body. The torsion arm is connected to the support seat and other connecting parts by means of hinges, etc. to transmit the torsion force of the torsion bar; in order to connect the integrated mounting seat 1211 with 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 allow relative movement within a certain range to adapt to various dynamic changes during the operation of the vehicle.

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

[0109] In addition to the above-mentioned axle box built-in bogie, the present invention also provides a rail vehicle including the axle box built-in bogie disclosed in the above-mentioned embodiment. For the structures of other parts of the rail vehicle, please refer to the relevant technology and will not be described in detail herein.

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

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

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

[0113] The above is a detailed introduction to the axle box built-in bogie and rail vehicle provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A bogie with built-in axle box, characterized in that: include: A frame (1) comprising two parallel side beams (11) and a cross beam (12) connected between the two side beams (11); An axle box body (2) is arranged on the inner side of the side beam (11); A brake caliper mounting seat (3) disposed on the outer side of the side beam (11); The brake caliper hanging member (31) is a transversely flattened structure, and is connected to the brake caliper mounting seat (3) via a vertical positioning fastener (32) with a vertical axis and a transverse positioning fastener (33) with a transverse axis; A brake caliper (34) is connected to the bottom of the brake caliper hanging component (31).

2. The bogie with built-in axle box according to claim 1, characterized in that: A tread cleaner mounting portion (311) is provided on the top of the brake caliper mounting seat (3) and is used to fix the tread cleaner (4).

3. The bogie with built-in axle box according to claim 1, characterized in that: It also includes a driving device (5), wherein the driving device (5) includes: A traction motor (51) is arranged on the crossbeam (12); A gear box (52) disposed on the crossbeam (12); A flexible floating gear coupling (53) connected between the traction motor (51) and the gear box (52); The traction motor (51), the gear box (52) and the flexible floating gear coupling (53) are all arranged between the two side beams (11).

4. The bogie with built-in axle box according to claim 3, characterized in that: The traction motor (51) has a groove along the transverse direction, and a part of the structure of the flexible floating gear coupling (53) extends into the groove.

5. The bogie with built-in axle box according to claim 3, characterized in that: A large gear (521) is provided in the gear box (52), and the large gear (521) comprises a mounting portion (5211) and a meshing portion (5212) connected to the mounting portion (5211), and the meshing portion (5212) and the mounting portion (5211) are at different lateral positions.

6. The bogie with built-in axle box according to claim 3, characterized in that: The crossbeam (12) is provided with a gearbox hanger (522), the gearbox hanger (522) is an integral forging, and the gearbox hanger (522) has an arc-shaped portion (5221), so that the gearbox hanger (522) is a structure with wide ends and a contracted middle in the longitudinal direction.

7. The bogie with built-in axle box according to claim 3, characterized in that: It comprises 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 arranged on the gear box (52), or the shaft end speed sensor, the grounding device and the signal sensor are all arranged on the inner side of the shaft box body (2).

8. The bogie with built-in axle box according to any one of claims 1 to 7, characterized in that: Between the top of the axle box (2) and the side beam (11) is provided: A rubber node assembly (61) for providing longitudinal and lateral positioning stiffness and releasing vertical stiffness; Two steel spring assemblies (62), used for providing vertical stiffness, and arranged on both sides of the rubber node assembly (61) in the longitudinal direction; A positioning rod (63) is provided between the bottom of the axle box (2) and the side beam (11), and the positioning rod (63) is used to provide longitudinal rigidity and release vertical rigidity and transverse rigidity.

9. The bogie with built-in axle box according to claim 8, characterized in that: An adjustment pad (64) is provided between the steel spring assembly (62) and the top of the axle box body (2); The steel spring assembly (62) comprises 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), wherein 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), and the upper end of the lower clamping plate (622) is provided with a first threaded hole (6221), and the first threaded hole (6221) is used for screwing in a process bolt (624) so ​​as to increase, decrease or replace the adjustment pad (64) by changing the vertical position of the lower clamping plate (622).

10. The bogie with built-in axle box according to claim 8, characterized in that: The rubber node assembly (61) comprises: A core shaft (611), wherein the upper end of the core shaft (611) has a tapered guide column; A rubber portion (612) disposed on the outer periphery of the core shaft (611); A frame side mounting seat (613) connected to the side beam (11) and provided with an inner conical hole, wherein the inner conical hole is cooperatively connected to the conical guide column; 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, and the axle box body (2) is provided with a positioning boss (21) that cooperates with the positioning hole for positioning.

11. The bogie with built-in axle box according to claim 8, characterized in that: The width of the side beam (11) is narrow in the middle and wide at both ends, and the rubber node assembly (61) and the steel spring assembly (62) are provided at both ends of the side beam (11).

12. The bogie with built-in axle box according to claim 8, characterized in that: The interior of the side beam (11) is provided with: a spring sleeve (111), the spring sleeve (111) being provided with a hollow groove, at least a portion of the steel spring assembly (62) being arranged in the spring sleeve (111), the hollow groove being used to limit the position of an upper clamping plate (621) of the steel spring assembly (62) and being used to allow a fastening bolt or a process bolt (624) to pass through; The positioning cylinder (1112) is used to install the rubber node assembly (61).

13. The bogie with built-in axle box according to claim 8, characterized in that: A first lifting seat (113) is provided on the inner side of the side beam (11), a second lifting seat (615) is provided on the outer periphery of the rubber node assembly (61), and further comprises: A lifting rod (65) is used to be connected to the first lifting seat (113) and the second lifting seat (615) respectively, so as to lift the axle box (2).

14. The bogie with built-in axle box according to any one of claims 1 to 7, characterized in that: 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) is a hollow structure; An anti-snaking shock absorber mounting seat (71) extending outward from the side beam (11) is provided in the middle of the side beam (11), the anti-snaking shock absorber mounting seat (71) being connected to one end of the anti-snaking shock absorber (72), the anti-snaking shock absorber mounting seat (71) comprising two symmetrically arranged arcuate side surfaces connected as one body, an arcuate bottom surface and a rectangular outer side surface; 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-snaking shock absorber mounting seat (71).

15. The bogie with built-in axle box according to any one of claims 1 to 7, characterized in that: The crossbeam (12) comprises a first crossbeam (121) and a second crossbeam (122) which are arranged in parallel, and a center pin component (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), and the traction rod (10) is located on the center line of the frame (1) in the transverse direction; A lateral vibration damper (20) is provided between the bottom of the side beam (11) and the bottom of the center pin assembly (9).

16. The bogie with built-in axle box according to any one of claims 1 to 7, characterized in that: The length of the first cross beam (121) is greater than the length of the second cross beam (122); a portion of the first cross beam (121) that exceeds the second cross beam (122) extends outward from the side beam (11); an end portion of the first cross beam (121) extending outward from the side beam (11) is provided with an integrated mounting seat (1211); and the integrated mounting seat (1211) is provided with a height valve; The first crossbeam (121) is a hollow structure, and an anti-roll torsion bar (30) is inserted into the first crossbeam. The anti-roll torsion bar (30) passes through the end of the first crossbeam (121) and is mounted on the integrated mounting seat (1211).

17. A rail vehicle, characterized in that: A bogie with an axle box built in comprising the bogie as described in any one of claims 1-16.

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