CN117864189A - Bogie and railway vehicle with same - Google Patents

Abstract

The invention provides a bogie and a railway vehicle with the same, wherein the bogie comprises: the framework assembly comprises a heart plate frame and two side frames, the two side frames extend longitudinally and are arranged at intervals along the transverse direction, the heart plate frame extends along the transverse direction and is positioned between the two side frames, and the side frames are provided with walking installation parts; the walking assembly comprises a rotating shaft mounting box and a wheel shaft component arranged on the rotating shaft mounting box, and the rotating shaft mounting box is arranged on the walking mounting part; a brake assembly having a braking state in braking engagement with the axle member and a running state separated from the axle member; the two ends of the center plate frame are respectively connected with the two side frames in a rotating way, the rotating axis of the center plate frame extends transversely, and the center plate frame can rotate relative to the opposite side frames within a preset angle range. Through the technical scheme provided by the application, the problem that the bogie in the related art cannot improve the uniform load of the framework on the premise of not reducing the overall diamond deformation resistance of the framework can be solved.

Description

Bogie and railway vehicle with same

Technical Field

The invention relates to the technical field of railway vehicles, in particular to a bogie and a railway vehicle with the bogie.

Background

Railway freight cars generally consist of car bodies, bogies, brake devices, car coupler buffer devices and the like. The bogie is an independent running structure formed by two or more pairs of wheel pairs connected by a frame or other device on the vehicle, capable of rotating relative to the vehicle body, and equipped with a spring or other component. The bogie functions to support the vehicle body, guide the vehicle along the track, and receive various loads from the vehicle body and the road. The body is supported on two or more bogies, depending on the total weight of the vehicle.

Railway freight car trucks mainly include two types of three-piece trucks and one-piece frame trucks. The whole bearing structure of the three-piece bogie is formed by connecting a center plate frame with two side frames through elastic bodies such as pillow springs and the like, and the whole framework of the whole framework bogie is of a rigid integrated structure. The three-piece bogie has the advantages of simple structure, reliable performance, low cost, good wheel weight average load performance and the like. The integral frame type bogie has the advantages of no diamond deformation, light unsprung mass, high running speed and the like.

Under the condition that the left and right side frames of the three-piece bogie are deformed through the sleeper springs to cause torsion, although the track irregularity can be well adapted, as the left and right side frames are elastically connected through the sleeper springs, the overall rhombic deformation resistance of the framework is poor, the running stability of the vehicle is not high, and the three-piece bogie is not suitable for long-time high-speed running. Meanwhile, as a spring suspension system is not arranged between the wheel axle and the side frame, the unsprung mass of the three-piece bogie is large, and the action force between wheel tracks is increased. The integral frame type bogie has the advantages that the frame adopts a rigid structure, the side frame and the center plate frame cannot be twisted, the adaptability to unsmooth lines is poor compared with three-piece type bogies, and the passing safety of curves is poor.

In order to improve the torsion capability of the rigid frame, the following technical means are adopted in the industry at present: 1) The central center frame is arranged into a two-section structure which can be twisted relatively. The structure is mainly suitable for a passenger car bogie structure borne by a side bearing, is not suitable for a railway wagon taking a heart plate as a main bearing structure, and can bring about the reduction of the overall strength of a framework heart plate frame and influence the driving safety; 2) The side frame of the framework and the center plate frame are elastically connected at the end connecting position. The structure can realize the relative nodding torsion of the center plate frame and the side frame, but also has the freedom degree of movement of the side frame and the center plate frame in the transverse moving and head shaking directions, reduces the integral diamond deformation resistance of the framework and reduces the running speed of the vehicle.

Therefore, the problem that the bogie in the related art cannot improve the uniform load of the framework on the premise of not reducing the overall diamond deformation resistance of the framework exists.

Disclosure of Invention

The invention provides a bogie and a railway vehicle with the bogie, which are used for solving the problem that the bogie in the related art cannot improve the uniform load performance of a framework on the premise of not reducing the integral diamond deformation resistance of the framework.

According to one aspect of the present invention, there is provided a bogie comprising: the framework assembly comprises a heart plate frame and two side frames, the two side frames extend longitudinally and are arranged at intervals along the transverse direction, the heart plate frame extends along the transverse direction and is positioned between the two side frames, and the side frames are provided with walking installation parts; the walking assembly comprises a rotating shaft mounting box and a wheel shaft component arranged on the rotating shaft mounting box, and the rotating shaft mounting box is arranged on the walking mounting part; a brake assembly having a braking state in braking engagement with the axle member and a running state separated from the axle member; the two ends of the center plate frame are respectively connected with the two side frames in a rotating way, the rotating axis of the center plate frame extends transversely, and the center plate frame can rotate relative to the opposite side frames within a preset angle range.

Further, be provided with revolution mechanic between heart dish frame and the side bearer, revolution mechanic includes pivot and spliced eye, and one of them sets up the tip of heart dish frame, and another of pivot and spliced eye sets up in the middle part of side bearer, and the pivot is followed transversely and is extended and insert in the spliced eye to realize the both ends of heart dish frame and be connected with the rotation of two side bearer respectively.

Further, the rotating structure further includes: the bearing mounting seat is penetrated in the inserting hole and fixedly connected with the side frame; the sliding bearing is sleeved on the rotating shaft in an interference fit mode and extends into the bearing mounting seat; a thrust bearing positioned at the end of the bearing mounting seat; and the shielding cover is fixedly connected with the rotating shaft and covers the outer sides of the bearing mounting seat and the sliding bearing.

Further, the rotating structure further comprises a gap adjusting pad, wherein the gap adjusting pad is positioned between the bearing mounting seat and the shielding cover, and/or the gap adjusting pad is positioned between the bearing mounting seat and the end face of the center plate frame.

Further, an anti-over-rotation structure is further arranged between the center plate frame and the side frame, so that the center plate frame rotates relative to the opposite side frame within a preset angle range.

Further, the anti-over-rotation structure includes: the first stop surface is arranged on one of the end surface of the heart plate frame and the outer side wall of the bearing mounting seat; the second stop surface is arranged on the other of the end surface of the heart plate frame and the outer side wall of the bearing mounting seat, and the first stop surface and the second stop surface are in stop fit.

Further, the walking assembly further comprises a bearing piece and a wearing plate, the wheel shaft component comprises a wheel shaft and wheels arranged on the wheel shaft, the rotating shaft mounting box is provided with an axle mounting opening, the end part of the wheel shaft is arranged in the axle mounting opening in a penetrating mode through a bearing piece, the bearing piece is arranged in the axle mounting opening, the lower end of the bearing piece is provided with an arc-shaped notch matched with the shape of the bearing piece, the wearing plate is arranged on the rotating shaft mounting box and located at the top of the axle mounting opening, and the upper end of the bearing piece can be in contact with the wearing plate.

Further, the walking assembly further comprises: the inclined wedge assembly is positioned at one side of the rotating shaft installation box, the inclined wedge assembly comprises an inclined wedge block and a first vertical spring, the lower end of the first vertical spring is in butt joint with the rotating shaft installation box, the inclined wedge block is positioned above the first vertical spring and in butt joint with the upper end of the first vertical spring, and the upper surface of the inclined wedge block can be in butt joint with the guide frame of the side frame; the longitudinal spring piece is positioned on the other side of the rotating shaft mounting box, the extending direction of the longitudinal spring piece extends longitudinally and can slide vertically relative to the rotating shaft mounting box, one end of the longitudinal spring piece is abutted with the rotating shaft mounting box, and the other end of the longitudinal spring piece can be abutted with the guide frame.

Further, the walking assembly further comprises a second vertical spring, the second vertical spring is located below the longitudinal spring piece, the lower end of the second vertical spring is abutted to the rotating shaft installation box, and the upper end of the second vertical spring can be abutted to the guide frame; and/or the inner frame body and the outer frame body of the guide frame are of an integrated structure.

According to another aspect of the present invention there is provided a railway vehicle comprising a bogie as provided above.

By applying the technical scheme of the invention, the bogie comprises a framework component, a walking component and a braking component. The frame assembly includes a spider and two side frames extending longitudinally and spaced laterally apart, the spider extending laterally and being positioned between the side frames. The two ends of the center plate frame are respectively connected with the two side frames in a rotating mode, the rotating axis of the center plate frame extends transversely, the center plate frame can rotate relative to the side frames within a preset angle range, relative torsion of the side frames and the center plate frame is achieved, the adaptation performance to line irregularity can be improved, and therefore curve passing safety can be improved. By adopting the structure, the two side frames of the bogie can move relatively to the center plate frame only in the torsion direction, the uniform load performance of the framework is improved, the integral diamond deformation resistance of the framework is not reduced, the diamond deformation resistance of the framework bogie is effectively reserved, and the technical advantages of light unsprung mass, high running speed and the like are achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 shows a schematic structural view of a bogie provided according to an embodiment of the present invention;

FIG. 2 shows a schematic structural view of the walking assembly of FIG. 1;

FIG. 3 shows a schematic structural view of the walking assembly of FIG. 1;

FIG. 4 shows a schematic structural view of the framing assembly of FIG. 1;

FIG. 5 shows a schematic structural view of the side frame of FIG. 1;

FIG. 6 shows a schematic structural view of the center tray of FIG. 1;

FIG. 7 shows a cross-sectional view of a bogie provided according to an embodiment of the present invention;

FIG. 8 shows a schematic structural view of the bearing mount of FIG. 7;

FIG. 9 shows a schematic structural view of the first thrust bearing of FIG. 7;

FIG. 10 shows a schematic structural view of the gap-adjusting pad of FIG. 7;

FIG. 11 shows a schematic structural view of the second thrust bearing of FIG. 7;

fig. 12 shows a schematic structural view of a bogie provided according to an embodiment of the present invention;

fig. 13 shows a cross-sectional view of a bogie provided according to an embodiment of the present invention.

Wherein the above figures include the following reference numerals:

10. a frame assembly; 11. a heart plate frame; 111. a brake assembly mounting hole; 12. a side frame; 121. a guide frame; 122. a tile changing operation hole; 123. a chute wear plate;

20. a walking assembly; 21. a rotating shaft mounting box; 22. an axle member; 23. a carrier; 24. wearing plate members; 25. a cam assembly; 251. wedge block; 252. a first vertical spring; 26. a longitudinal spring member; 27. a second vertical spring;

30. a brake assembly;

40. a rotating structure; 41. a rotating shaft; 42. a plug hole; 43. a bearing mounting seat; 44. a sliding bearing; 45. a thrust bearing; 451. a first thrust bearing; 452. a second thrust bearing; 46. a shielding cover; 47. a gap adjusting pad; 50. an anti-over-rotation structure; 51. a first stop surface; 52. and a second stop surface.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-13, an embodiment of the present invention provides a bogie comprising a frame assembly 10, a walking assembly 20, and a brake assembly 30. The frame assembly 10 includes a spider 11 and two side frames 12, the two side frames 12 extending longitudinally and being spaced apart laterally, the spider 11 extending laterally and being located between the two side frames 12, the side frames 12 being provided with walk-on mounts. The traveling assembly 20 includes a rotation shaft mounting case 21 and a wheel shaft member 22 provided on the rotation shaft mounting case 21, the rotation shaft mounting case 21 being provided on the traveling mounting portion. The brake assembly 30 has a braking condition in braking engagement with the axle member 22 and a travel condition separate from the axle member 22. Wherein, the two ends of the center plate frame 11 are respectively connected with the two side frames 12 in a rotating way, the rotating axis of the center plate frame 11 extends along the transverse direction, and the center plate frame 11 can rotate relative to the side frames 12 within a preset angle range.

By applying the bogie provided by the embodiment, the two ends of the center plate frame 11 are respectively connected with the two side frames 12 in a rotating way, so that the center plate frame 11 can rotate relative to the side frames 12 within a preset angle range, the relative torsion of the side frames 12 and the center plate frame 11 is realized, the adaptability to line irregularity can be improved, and the curve passing safety can be improved. By adopting the structure, the two side frames 12 of the bogie can move relatively to the center plate frame 11 only in the torsion direction, the uniform load performance of the framework is improved, the integral diamond deformation resistance of the framework is not reduced, the diamond deformation resistance of the framework bogie is effectively reserved, and the technical advantages of light unsprung mass, high running speed and the like are achieved.

As shown in fig. 5 and 6, a rotating structure 40 is arranged between the heart disk frame 11 and the side frames 12, the rotating structure 40 comprises a rotating shaft 41 and a plug hole 42, one of the rotating shaft 41 and the plug hole 42 is arranged at the end part of the heart disk frame 11, the other of the rotating shaft 41 and the plug hole 42 is arranged at the middle part of the side frames 12, and the rotating shaft 41 transversely extends and is inserted into the plug hole 42 so as to realize that two ends of the heart disk frame 11 are respectively connected with the two side frames 12 in a rotating way.

In this embodiment, the two ends of the center frame 11 are provided with the rotating shafts 41, and the middle parts of the two side frames 12 are provided with the inserting holes 42.

As shown in fig. 7, the rotating structure 40 further includes a bearing mount 43, a slide bearing 44, a thrust bearing 45, and a shielding cover 46. The bearing mounting seat 43 is arranged in the inserting hole 42 in a penetrating way and fixedly connected with the side frame 12, the sliding bearing 44 is sleeved on the rotating shaft 41 in an interference fit way and extends into the bearing mounting seat 43, the thrust bearing 45 is positioned at the end part of the bearing mounting seat 43, and the shielding cover 46 is fixedly connected with the rotating shaft 41 and covers the outer sides of the bearing mounting seat 43 and the sliding bearing 44. The slide bearing 44 can reduce the sliding resistance between the rotation shaft 41 and the insertion hole 42, so that the center frame 11 slides smoothly against the side frame 12, and responds to adaptive changes of line irregularity in time. The shielding cover 46 can limit the sliding bearing 44, and prevent the sliding bearing 44 from falling out of the rotating shaft 41.

The sliding bearing 44 has a self-lubricating function, and reduces abrasion of a friction pair while realizing a rotation function, thereby improving functional sensitivity and reliability of the rotating mechanism.

In the present embodiment, the thrust bearing 45 includes a first thrust bearing 451 and a second thrust bearing 452, the first thrust bearing 451 is interposed between the shielding cover 46 and the bearing mount 43, and both sides of the first thrust bearing 451 are respectively abutted against the inner side surface of the shielding cover 46 and one side surface of the bearing mount 43. The second thrust bearing 452 is interposed between the bearing mount 43 and the center plate frame 11, and both sides of the second thrust bearing 452 are respectively abutted against the other side surface of the bearing mount 43 and the end surface of the center plate frame 11. By providing the first thrust bearing 451 and the second thrust bearing 452, the spindle 41 and the side frame 12 can be tightly matched after assembly, and only the nodding motion of the side frame 12 and the center frame 11 can be realized in practical application.

The rotating structure 40 further includes a gap adjusting pad 47, wherein the gap adjusting pad 47 is located between the bearing mounting seat 43 and the shielding cover 46, and/or the gap adjusting pad 47 is located between the bearing mounting seat 43 and an end surface of the center plate frame 11.

In the present embodiment, the gap adjustment pad 47 is located between the shielding cover 46 and the first thrust bearing 451, and both sides of the gap adjustment pad 47 are respectively abutted against the inner side surface of the shielding cover 46 and the outer side surface of the first thrust bearing 451. The gap can be filled by the gap adjusting pad 47, no gap is realized, only the nodding motion of the side frame 12 and the center plate frame 11 is realized in actual application, and the uniform load of the framework is improved.

As shown in fig. 6 and 8, an anti-over-rotation structure 50 is further disposed between the center frame 11 and the side frame 12, so that the center frame 11 rotates relative to the side frame 12 within a preset angle range, and the transition rotation of the center frame 11 is avoided, so that the stability can be improved. By adopting the structure, the bogie can simultaneously meet the overall rigidity and the curve passing safety.

The anti-over rotation structure 50 includes a first stop surface 51 and a second stop surface 52. The first stopper surface 51 is provided on one of the end surface of the center plate frame 11 and the outer side wall of the bearing mount 43. The second stop surface 52 is provided on the other of the end surface of the center plate frame 11 and the outer side wall of the bearing mount 43, and the first stop surface 51 and the second stop surface 52 are in stop fit.

Specifically, the anti-over-rotation structure 50 includes two first stop surfaces 51 and two second stop surfaces 52. The two first stop surfaces 51 are longitudinally arranged on the end surface of the heart-shaped disc frame 11 at intervals, the bearing mounting seat 43 is positioned between the two first stop surfaces 51, the two second stop surfaces 52 are symmetrically arranged on the outer side wall of the bearing mounting seat 43, and the two first stop surfaces 51 and the two second stop surfaces 52 are in one-to-one clearance fit. The gap enables the side frame 12 and the center plate frame 11 to realize nodding movement, and the two first stop surfaces 51 and the two second stop surfaces 52 are used for being matched in a stop mode, so that the maximum rotation angle of the center plate frame 11 relative to the side frame 12 is limited, and the operation safety is guaranteed.

In this embodiment, the second stop surface 52 is an arc surface, so that the contact between the first stop surface 51 and the second stop surface 52 is smoother, and the stability during rotation is improved.

In this embodiment, the preset angle range is smaller than or equal to 1.5 °, so that the side frame 12 and the center frame 11 can realize nodding movement, and the maximum rotation angle of the center frame 11 relative to the side frame 12 can be limited to ensure operation safety. The preset angle range may be any one of 0.5 °, 1 °, 1.5 ° and less than or equal to 1.5 °.

Specifically, the frame-type bogie can meet the requirements of the vehicle on the linear hunting critical running speed and the vehicle curve passing performance, and improves the bogie adaptation curve passing capability and the linear hunting critical speed.

As shown in fig. 12 and 13, the walking assembly 20 further includes a carrier 23 and a wear plate 24, the axle member 22 includes an axle and wheels provided on the axle, the axle mounting box 21 has an axle mounting opening, an end portion of the axle is penetrated in the axle mounting opening by a bearing member, the carrier 23 is provided in the axle mounting opening, a lower end of the carrier 23 is provided with an arc-shaped notch adapted to an outer shape of the bearing member, the wear plate 24 is provided on the axle mounting box 21 and located at a top of the axle mounting opening, and an upper end of the carrier 23 can be in contact with the wear plate 24. The wheel shaft is fixed to the side frame 12 by the shaft mounting box 21, and the bearing 23 is provided in the shaft mounting box 21, whereby the manufacturability of assembling the shaft mounting box 21 and the bearing can be improved by the bearing 23. Also, since the shaft mounting case 21 is provided with the wear plate 24 above the carrier 23, the wear resistance of the component can be improved by the wear plate 24.

In the present embodiment, the wear plate 24 is made of spring steel, and the wear plate 24 can effectively buffer the vertical impact force from the rail to the axle.

As shown in fig. 12 and 13, walking assembly 20 further includes a cam assembly 25 and a longitudinal spring member 26. The wedge assembly 25 is located on one side of the rotating shaft mounting box 21, the wedge assembly 25 comprises a wedge 251 and a first vertical spring 252, the lower end of the first vertical spring 252 is abutted against the rotating shaft mounting box 21, the wedge 251 is located above the first vertical spring 252 and is abutted against the upper end of the first vertical spring 252, and the upper surface of the wedge 251 can be abutted against the guide frame 121 of the side frame 12. The longitudinal spring member 26 is located on the other side of the shaft mounting case 21, the extension and contraction direction of the longitudinal spring member 26 extends longitudinally and can slide vertically relative to the shaft mounting case 21, one end of the longitudinal spring member 26 abuts against the shaft mounting case 21, and the other end of the longitudinal spring member 26 can abut against the guide frame 121. By adopting the structure, the positioning vibration reduction mode of the wedge assembly and the longitudinal spring piece can properly increase the yielding property of the wheel set when passing through a curve while increasing the positioning rigidity of the wheel set.

Specifically, the wedge assembly and the longitudinal spring member are matched with a main friction plate made of a high-molecular wear-resistant material, so that vibration reduction stability and wear resistance are maintained. The longitudinal spring piece is a longitudinal rubber spring, adopts two-stage rigidity setting, and can adapt to the influence of the empty and heavy truck of the railway wagon on the dynamic performance.

In this embodiment, the walking assembly 20 further includes a second vertical spring 27, where the second vertical spring 27 is located below the longitudinal spring member 26, the lower end of the second vertical spring 27 abuts against the rotating shaft mounting box 21, and the upper end of the second vertical spring 27 can abut against the guide frame 121, so as to perform the functions of load transmission and shock absorption.

In this embodiment, the inner frame body and the outer frame body of the guide frame 121 are integrally formed.

In this embodiment, the side frames 12 and the center frame 11 are each of a box-type structure formed by welding plates, so that the bogie can be light and structural strength can be ensured. Specifically, the side frames and the center plate frame are all of box-shaped structures formed by steel plate assembly welding.

The spindle 41 and the center frame 11 are integrally formed, which has the advantages of easy processing and low cost. The side frame 12 is provided with shoe change operation holes 122 to facilitate subsequent shoe change. The core frame 11 is provided with a brake assembly mounting hole 111, and the brake assembly is mounted by the brake assembly mounting hole 111.

In this embodiment, the side frame 12 is provided with a chute wear plate 123 that is capable of friction-fitting with the brake beam slider so that the brake beam moves in the chute direction, thereby achieving a braking function. Specifically, the chute wear plate 123 is attached to the side frame by staking. The chute wear plate 123 is a stainless steel chute wear plate.

In this embodiment, the brake assembly 30 includes two parts, namely a foundation brake device and an empty-load car adjustment device. The brake assembly 30 has the following technical characteristics: (1) The basic braking device adopts an integrated braking device, so that the transmission efficiency and the release performance of a braking system can be improved, and the abrasion of wheel tiles can be slowed down; (2) In order to adapt to the change of the empty and heavy trucks of the welding frame type bogie, an empty and heavy truck adjusting valve arranged between a rotating shaft mounting box and a frame guide frame is adopted, and an empty and heavy truck touch plate structure arranged in the rotating shaft mounting box is simple in structure and has a vertical clearance adjustable function.

The bogie further comprises a vehicle body connecting structure, and the center plate and side bearing connecting structure is adopted, so that the bogie is convenient to overhaul, stable in performance, high in reliability, good in universality and interchangeability.

A further embodiment of the invention provides a railway vehicle comprising a bogie as provided above. Therefore, the railway vehicle can also realize that the two side frames 12 of the bogie can move relatively to the center plate frame 11 only in the torsion direction, so that the uniform load of the framework is improved, the integral diamond deformation resistance of the framework is not reduced, the diamond deformation resistance of the framework bogie is effectively reserved, and the railway vehicle has the technical advantages of light unsprung mass, high running speed and the like.

Wherein the vehicle comprises a railway wagon.

Through the device that this embodiment passed, have following beneficial effect:

(1) The flexible framework technology is realized through the rotating structure, the rhombic deformation resistance of the framework bogie is effectively reserved, the uniform load of the framework is improved while the integral rhombic deformation resistance of the framework is not reduced, and the flexible framework has the technical advantages of light unsprung mass, high running speed and the like;

(2) The positioning vibration reduction mode of the wedge and the longitudinal rubber spring is adopted, the positioning rigidity of the wheel set is increased, the yielding property of the wheel set when passing through a curve is properly increased, and meanwhile, the longitudinal rubber spring adopts two-stage rigidity setting, so that the vibration reduction device can adapt to the influence of a railway wagon empty-load car on the dynamic performance, and the wedge and the longitudinal rubber spring are matched with a main friction plate made of a high-molecular wear-resistant material, so that the vibration reduction stability and wear resistance are maintained;

(3) The bearing piece is arranged on the inner side of the rotating shaft mounting box and matched with the abrasion plate, so that the vertical impact force of the wheel rail is reduced, and the assembly manufacturability of the rotating shaft mounting box and the bearing piece is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A bogie, the bogie comprising:

the framework assembly (10) comprises a heart plate frame (11) and two side frames (12), wherein the two side frames (12) extend longitudinally and are arranged at intervals in the transverse direction, the heart plate frame (11) extends in the transverse direction and is positioned between the two side frames (12), and the side frames (12) are provided with walking installation parts;

the walking assembly (20) comprises a rotating shaft mounting box (21) and a wheel shaft component (22) arranged on the rotating shaft mounting box (21), and the rotating shaft mounting box (21) is arranged on the walking mounting part;

a brake assembly (30) having a braking condition in braking engagement with the axle member (22) and a travel condition separate from the axle member (22);

the two ends of the center plate frame (11) are respectively connected with the two side frames (12) in a rotating mode, the rotating axis of the center plate frame (11) extends transversely, and the center plate frame (11) can rotate relative to the side frames (12) within a preset angle range.

2. Bogie according to claim 1 characterized in that a rotating structure (40) is arranged between the core frame (11) and the side frames (12), the rotating structure (40) comprises a rotating shaft (41) and a plug hole (42), one of the rotating shaft (41) and the plug hole (42) is arranged at the end part of the core frame (11), the other of the rotating shaft (41) and the plug hole (42) is arranged at the middle part of the side frames (12), and the rotating shaft (41) extends transversely and is inserted into the plug hole (42) so as to realize the rotating connection of the two ends of the core frame (11) with the two side frames (12) respectively.

3. Bogie according to claim 2, characterized in that the rotating structure (40) further comprises:

the bearing mounting seat (43) is penetrated in the inserting hole (42) and fixedly connected with the side frame (12);

the sliding bearing (44) is sleeved on the rotating shaft (41) in an interference fit mode and extends into the bearing mounting seat (43);

a thrust bearing (45) located at an end of the bearing mount (43);

and a shielding cover (46) fixedly connected with the rotating shaft (41) and covered on the outer sides of the bearing mounting seat (43) and the sliding bearing (44).

4. A bogie according to claim 3 wherein the rotating structure (40) further comprises a gap adjustment pad (47), the gap adjustment pad (47) being located between the bearing mount (43) and the shielding cover (46) and/or the gap adjustment pad (47) being located between the bearing mount (43) and an end face of the core disc frame (11).

5. A bogie according to claim 3 wherein an anti-overspin structure (50) is further provided between the spider (11) and the side frame (12) to allow the spider (11) to pivot relative to the side frame (12) within the predetermined angular range.

6. The bogie according to claim 5, characterized in that the anti-over-rotation structure (50) comprises:

a first stopper surface (51) provided on one of the end surface of the center plate frame (11) and the outer side wall of the bearing mount (43);

and a second stop surface (52) arranged on the other of the end surface of the core plate frame (11) and the outer side wall of the bearing mounting seat (43), wherein the first stop surface (51) and the second stop surface (52) are in stop fit.

7. Bogie according to any of claims 1 to 6 characterized in that the walking assembly (20) further comprises a carrier (23) and a wear plate (24), the axle member (22) comprises an axle and wheels arranged on the axle, the axle mounting box (21) has an axle mounting opening, the end of the axle is arranged in the axle mounting opening by means of a bearing member in a penetrating way, the carrier (23) is arranged in the axle mounting opening, the lower end of the carrier (23) is provided with an arc-shaped gap adapted to the shape of the bearing member, the wear plate (24) is arranged on the axle mounting box (21) and on top of the axle mounting opening, the upper end of the carrier (23) can be in contact with the wear plate (24).

8. The bogie according to any of claims 1 to 6 wherein the walking assembly (20) further comprises:

the inclined wedge assembly (25) is positioned on one side of the rotating shaft mounting box (21), the inclined wedge assembly (25) comprises an inclined wedge block (251) and a first vertical spring (252), the lower end of the first vertical spring (252) is abutted against the rotating shaft mounting box (21), the inclined wedge block (251) is positioned above the first vertical spring (252) and is abutted against the upper end of the first vertical spring (252), and the upper surface of the inclined wedge block (251) can be abutted against the guide frame (121) of the side frame (12);

the longitudinal spring piece (26) is positioned on the other side of the rotating shaft mounting box (21), the extending and contracting direction of the longitudinal spring piece (26) extends longitudinally and can slide vertically relative to the rotating shaft mounting box (21), one end of the longitudinal spring piece (26) is abutted to the rotating shaft mounting box (21), and the other end of the longitudinal spring piece (26) can be abutted to the guide frame (121).

9. The bogie as claimed in claim 8, wherein,

the walking assembly (20) further comprises a second vertical spring (27), the second vertical spring (27) is located below the longitudinal spring piece (26), the lower end of the second vertical spring (27) is abutted to the rotating shaft mounting box (21), and the upper end of the second vertical spring (27) can be abutted to the guide frame (121); and/or the number of the groups of groups,

the inner frame body and the outer frame body of the guide frame (121) are of an integrated structure.

10. A railway vehicle, characterized in that it comprises a bogie as claimed in any one of claims 1 to 9.