Shaft sleeve structure, wheel set, bogie and railway vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a shaft sleeve structure, a wheel set, a bogie and a railway vehicle. The shaft sleeve structure comprises a first shaft sleeve and a second shaft sleeve; the first shaft sleeve and the second shaft sleeve are coaxial, are arranged on the two sides of the gearbox respectively and are suitable for being fixedly connected with the gearbox respectively. The first shaft sleeve and the second shaft sleeve are respectively provided with an axial shaft penetrating hole, and the shaft penetrating holes are suitable for penetrating an axle coaxially fixed with a wheel; the first shaft sleeve comprises a first pipe body close to the gear box and a second pipe body far away from the gear box, the second shaft sleeve comprises a second pipe body, the first pipe body is of a sleeve structure with a round inner side and a square outer side, and the second pipe body is of a round sleeve structure and is suitable for being rotationally connected to the inner side of a wheel. The axle can only transmit torque, the first shaft sleeve and the second shaft sleeve play a bearing role, the torque transmission function and the bearing function are decoupled, good bending resistance is achieved, and the safety coefficient is effectively improved.

Description

Technical Field

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

[0002] The function of axles of traditional rail vehicles is to carry vehicles and transmit starting and braking torques. The forces on axles are complex and require high strength. How to separate the load-bearing function of traditional axles from the torque transmission function, transform the complex forces into a single force mode, improve the safety factor, and take into account lightweight and material costs has always been the goal pursued by axle design. Summary of the invention

[0003] The present invention provides an axle sleeve structure, a wheelset, a bogie and a rail vehicle, which are used to solve the defects in the prior art that the rail vehicle axle needs to carry the vehicle and transmit starting and braking torque at the same time, the axle has complex force and high strength requirements, and realizes the separation of the load-bearing function and the torque transmission function of the traditional axle.

[0004] The present invention provides a shaft sleeve structure, comprising a first shaft sleeve and a second shaft sleeve;

[0005] The first shaft sleeve and the second shaft sleeve are coaxial, and the first shaft sleeve and the second shaft sleeve are disposed on both sides of the gear box and are respectively suitable for being fixedly connected to the gear box;

[0006] The first sleeve and the second sleeve are respectively provided with an axial through-hole, and the through-hole is suitable for passing an axle fixed coaxially with the wheel;

[0007] The first sleeve includes a first tube body close to the gear box and a second tube body away from the gear box, the second sleeve includes a second tube body, the first tube body is a sleeve structure with a circular inner side and a square outer side, the second tube body is a circular sleeve structure, and the second tube body is suitable for being rotatably connected to the inner side of the wheel.

[0008] According to a shaft sleeve structure provided by the present invention, a bell-mouth structure is provided at one end of the first shaft sleeve and the second shaft sleeve connected to the gear box, and the diameter of the bell-mouth structure gradually decreases from the end close to the gear box to the end far from the gear box.

[0009] According to a shaft sleeve structure provided by the present invention, the bell mouth structure is a square bell mouth.

[0010] According to a shaft sleeve structure provided by the present invention, a flange is provided on the outer side of one end of the bell-mouth structure facing the gear box, and the flange is suitable for being connected with bolts of the gear box.

[0011] According to a shaft sleeve structure provided by the present invention, the first tube body of the first shaft sleeve is provided with a motor hanger, and the motor hanger is used to connect the traction motor.

[0012] According to a shaft sleeve structure provided by the present invention, the motor hanger includes a plurality of lifting rings, which are disposed on upper and lower sides of the first shaft sleeve, and the lifting rings are suitable for being connected with the traction motor bolts.

[0013] A shaft sleeve structure provided according to the present invention further includes at least one of the following structures:

[0014] a pair of boss structures, located on the upper sides of the first sleeve and the second sleeve, suitable for connecting with the leaf spring rubber block;

[0015] A speed sensor, disposed on the first shaft sleeve or the second shaft sleeve, for measuring the rotation speed of the axle;

[0016] A grounding device, disposed on the first sleeve or the second sleeve, and used for connecting a grounding wire;

[0017] The traction plate seat is arranged on the first shaft sleeve or the second shaft sleeve and is suitable for connecting the frame.

[0018] The present invention also provides a wheelset, comprising an axle, a gear box, a pair of wheels and the above-mentioned sleeve structure;

[0019] The shaft sleeve structure is fixedly connected to the gear box;

[0020] The pair of wheels are disposed at two ends of the shaft sleeve structure, and the inner sides of the pair of wheels are rotatably connected to the corresponding second tube bodies;

[0021] The axle is passed through the axle hole, and the end of the axle is fixedly connected to the corresponding wheel through a connecting structure.

[0022] The present invention also provides a bogie comprising the above-mentioned wheelset.

[0023] The present invention also provides a rail vehicle, comprising the above-mentioned bogie.

[0024] The shaft sleeve structure, wheelset, bogie and rail vehicle provided by the present invention arrange the gear box between the first shaft sleeve and the second shaft sleeve, which can facilitate the connection of the gear box to the axle, and the first shaft sleeve and the second shaft sleeve are rotatably connected to the wheel, so that the axle only transmits torque, and the first shaft sleeve and the second shaft sleeve play a load-bearing role, thereby realizing the decoupling of the torque transmission function and the load-bearing function. In addition, since the first tube body of the first shaft sleeve is a sleeve structure with a circular inner side and a circular outer side, it has good bending resistance while meeting the requirements for connection with the axle, and effectively improves the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of a shaft sleeve structure provided by the present invention;

[0027] Figure 2 It is a schematic diagram of a connection structure between a shaft sleeve structure and a gear box provided by the present invention;

[0028] Figure 3 This is a schematic structural diagram of a shaft sleeve structure provided by the present invention in a use state;

[0029] Figure 4 It is a schematic diagram of a sleeve structure provided by the present invention showing a bearing and a fender structure;

[0030] Figure 5 This is one of the structural schematic diagrams of a wheelset provided by the present invention (the gear box is hidden in the figure);

[0031] Figure 6 This is the second structural schematic diagram of a wheelset provided by the present invention (the gear box and the second shaft sleeve are hidden in the figure);

[0032] Figure 7 This is the third structural schematic diagram of a wheelset provided by the present invention;

[0033] Figure 8 This is one of the cross-sectional views showing the connection structure of a wheelset provided by the present invention;

[0034] Fig. 9 It is a structural schematic diagram of a connection structure in a wheelset provided by the present invention;

[0035] Fig.10 This is the second cross-sectional view showing the connection structure of a wheelset provided by the present invention;

[0036] Fig.11 It is a schematic diagram of a wheelset performance frame connector installation structure provided by the present invention;

[0037] Fig.12 It is a schematic diagram of a wheelset performance frame connecting member structure provided by the present invention;

[0038] Reference numerals:

[0039] 100, first sleeve; 101, first tube body; 102, second tube body; 103, bell mouth structure; 104, flange; 105, lifting ring; 106, boss structure; 107, traction plate seat; 108, bearing; 109, fender;

[0040] 200, second sleeve;

[0041] 300, gear box;

[0042] 400, axle;

[0043] 500, wheel; 501, rim; 502, elastic rubber; 503, spoke;

[0044] 600, connection structure; 601, transmission member; 602, first connection flange; 603, second connection flange; 604, sealing structure;

[0045] 700, frame connector; 701, first connector; 702, second connector;

[0046] 800, traction motor;

[0047] 900. Positioning node. DETAILED DESCRIPTION

[0048] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0051] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0053] Combine the following Figures 1 to 12 The sleeve structure of the present invention is described.

[0054] Combination Figure 1 and Figure 2 The sleeve structure includes a first sleeve 100 and a second sleeve 200, the first sleeve 100 and the second sleeve 200 are coaxial, the first sleeve 100 and the second sleeve 200 are disposed on both sides of the gear box 300, and are respectively connected to the gear box 300, the first sleeve 100 and the second sleeve 200 are respectively provided with axial through-shaft holes; the through-shaft holes are suitable for passing through the axle 400 coaxially fixed with the wheel 500; the first sleeve 100 includes a first tube body 101 close to the gear box 300 and a second tube body 102 away from the gear box 300, the second sleeve 200 is provided with the second tube body 102; the first tube body 101 is a sleeve structure with a circular inner side and a square outer side, the second tube body 102 is a circular sleeve structure, and the second tube body 102 is suitable for rotatably connecting to the inner side of the wheel 500.

[0055] When the first sleeve 100 and the second sleeve 200 are in use, two opposite side walls of the first tube body 101 are arranged vertically, and the other two opposite side walls are arranged horizontally.

[0056] In this embodiment, the first sleeve 100 and the second sleeve 200 can rotate relative to the axle 400 and the wheel 500. When the axle 400 drives the wheel 500 to rotate, the first sleeve 100 and the second sleeve 200 do not bear torque, and accordingly, the torque borne by the first sleeve 100 and the second sleeve 200 will not be transmitted to the axle 400. Therefore, this embodiment realizes the decoupling of the torque transmission function and the load-bearing function, which can reduce the requirements for the bending resistance of the axle 400. Furthermore, when designing, the diameter of the axle 400 can be reduced, thereby reducing the overall weight, and the structural design freedom is higher.

[0057] Optionally, the vertical height of the first tube body 101 is greater than its width, so that it has better vertical bearing capacity.

[0058] Optionally, the first tube body 101 in the first sleeve 100 is integrally formed with the corresponding second tube body 102 to ensure the structural strength between the first tube body 101 and the second tube body 102 and to reduce the difficulty of processing the first sleeve 100 .

[0059] Combination Figure 1 and Figure 2 In some embodiments of the present invention, a bell-mouth structure 103 is provided at one end of the first sleeve 100 and the second sleeve 200 connected to the gear box 300, and the diameter of the bell-mouth structure 103 gradually decreases from the end close to the gear box 300 to the end away from the gear box 300. In this embodiment, the bell-mouth structure 103 can be easily connected to the housing of the gear box 300, and is conducive to reducing stress concentration. Optionally, the bell-mouth structure 103 and the first tube body 101 or the second tube body 102 connected thereto are integrally formed, without the need for welding operations, and are easy to process and ensure connection strength.

[0060] Optionally, the bell mouth structure 103 is a square bell mouth. When in use, the two oppositely disposed side walls of the bell mouth structure 103 are arranged vertically, which can increase the vertical pressure bearing capacity of the bell mouth structure 103.

[0061] It is worth noting that the second sleeve 200 can be provided with the first tube 101, or Figure 1 The first tube body 101 is not provided in the figure; when the second sleeve 200 is provided with the first tube body 101, the second tube body 102 of the second sleeve 200 is connected to the first tube body 101, and the first tube body 101 of the second sleeve 200 is connected to the bell mouth structure 103; for example Figure 1 When the second sleeve 200 is not provided with the first tube body 101 , the second tube body 102 thereof is connected to the bell mouth structure 103 .

[0062] Optionally, a flange 104 is provided on the outer side of one end of the bell-mouth structure 103 facing the gear box 300. The flange 104 is a square ring structure that is compatible with the end of the bell-mouth structure 103. The flange 104 is circumferentially provided with multiple mounting holes. The flange 104 is suitable for being connected to the gear box 300 by bolts passing through the mounting holes.

[0063] Combination Figure 1 and Figure 3 In some embodiments of the present invention, the sleeve structure further includes a motor hanger, which is used to connect the traction motor 800. Specifically, the motor hanger is arranged on the first tube body 101 of the first sleeve 100. When the traction motor 800 is installed on the first tube body 101 of the first sleeve 100, the traction motor 800 is supported by the first sleeve 100, and the traction motor 800 is adjacent to the gear box 300, which facilitates the transmission between the motor shaft of the traction motor 800 and the gear box 300, realizes modular installation, and reduces the difficulty of processing and assembly.

[0064] Optionally, the motor hanger includes a plurality of lifting rings 105, which are disposed on the upper and lower sides of the first sleeve 100, and the axes of the plurality of lifting rings 105 are horizontal and perpendicular to the axis direction of the first sleeve 100. The number of lifting rings 105 corresponds to the number of bolt mounting holes of the traction motor 800, or is greater than the number of bolt mounting holes of the traction motor 800. For example, there are four lifting rings 105, of which two lifting rings 105 are located on the upper side of the first sleeve 100, and the other two lifting rings 105 are located on the lower side of the first sleeve 100, and the two lifting rings 105 located on the upper side are aligned with the two lifting rings 105 located on the lower side in the vertical direction. The lifting ring 105 is suitable for being bolted to the traction motor 800. Specifically, the four bolt mounting holes of the traction motor 800 are respectively aligned with the two lifting rings 105 on the upper side and the two lifting rings 105 on the lower side of the first sleeve 100. Bolts are respectively arranged corresponding to the four lifting rings 105. The bolts are simultaneously passed through the corresponding lifting rings 105 and the bolt mounting holes, and are fastened by the bolts to fix the traction motor 800.

[0065] In some embodiments of the present invention, the sleeve structure further includes a pair of boss structures 106, which are disposed on the upper sides of the first sleeve 100 and the second sleeve 200. The boss structure 106 on the first sleeve 100 and the boss structure 106 on the second sleeve 200 are symmetrically arranged about the vertical plane of the sleeve structure. The boss structure 106 is suitable for connecting with the leaf spring rubber block to realize the support of the leaf spring by the sleeve structure.

[0066] Combination Figure 1In some embodiments of the present invention, the bushing structure further includes a speed sensor, which is used to measure the rotational speed of the axle 400. It should be noted that the speed sensor can be provided on one of the first bushing 100 and the second bushing 200 to meet the measurement needs. Furthermore, the speed sensors can be provided on the first bushing 100 and the second bushing 200 to facilitate measurement verification and eliminate errors.

[0067] In some embodiments of the present invention, the sleeve structure further includes a grounding device, which is disposed on the first sleeve 100 or the second sleeve 200 to achieve a grounding function.

[0068] In some embodiments of the present invention, the sleeve structure further includes a traction plate seat 107, which is disposed on the first sleeve 100 or the second sleeve 200. The traction plate seat 107 is connected to the rail vehicle frame through a frame connector 700. In this embodiment, the traction plate seat 107 and the traction motor 800 are located on the same side of the sleeve structure.

[0069] Optionally, the first sleeve 100 and the second sleeve 200 are respectively provided with a traction plate seat 107 .

[0070] Optionally, the traction plate seats 107 on the first sleeve 100 and the second sleeve 200 are symmetrically arranged with respect to the vertical plane of the sleeve structure.

[0071] Combination Figure 4 In some embodiments of the present invention, the sleeve structure further includes a bearing 108, which is used to connect with the wheel 500 to reduce the friction resistance between the wheel 500 and the second tube 102. Optionally, the first sleeve 100 and the second sleeve 200 are respectively provided with bearings 108 on the outside of the second tube 102.

[0072] Optionally, the first sleeve 100 and the second sleeve 200 are provided with a fender 109, which is arranged on the outer wall of the first sleeve 100 and the second sleeve 200 and is located on the side of the bearing 108 close to the middle of the sleeve structure, so as to play a protective role.

[0073] The following is an exemplary introduction to a wheelset provided in an embodiment of the present invention.

[0074] like Figures 5 to 7 As shown, the wheelset includes the above-mentioned sleeve structure and an axle 400, a gear box 300, a pair of wheels 500 and a connecting structure 600; the sleeve structure is fixedly connected to the gear box 300; the axle 400 is rotatably arranged in the sleeve structure; a pair of wheels 500 are disposed at both ends of the sleeve structure and are rotatably connected to the sleeve structure respectively, and the connecting structure 600 is respectively connected to the axle 400 and the wheel 500, so as to realize the synchronous rotation of the axle 400 and the wheel 500.

[0075] In this embodiment, the sleeve structure includes a first sleeve 100 and a second sleeve 200. The first sleeve 100 and the second sleeve 200 are disposed on both sides of the gear box 300 and are fixedly connected to the gear box 300 by bolts respectively. The through-axle holes of the first sleeve 100 and the second sleeve 200 are suitable for passing an axle 400 coaxially fixed with the wheel 500. The axle 400 is connected to the gear box 300. When the gear box 300 transmits power to the axle 400, it can drive the axle 400 to rotate axially. Since both ends of the axle 400 are connected to the wheel 500 by a connecting structure 600, the axle 400 can be transmitted to the wheel 500 through the connecting structure 600 to rotate the wheel 500. The wheel 500 is rotationally connected to the first sleeve 100 and the second sleeve 200. When the axle 400 and the wheel 500 rotate, no torque is transmitted to the first sleeve 100 and the second sleeve 200, and the vertical bending moment borne by the first sleeve 100 and the second sleeve 200 is not transmitted to the axle 400.

[0076] It is worth noting that the above embodiment only exemplarily describes a scheme in which the sleeve structure is divided into the first sleeve 100 and the second sleeve 200 when the wheelset is used as a power wheelset. In some other embodiments of the present invention, when the wheelset is used as a non-power wheelset, the sleeve structure may also be in an integrated form, that is, the sleeve structure is not divided into the first sleeve 100 and the second sleeve 200, nor is it connected to the gear box 300. The two ends of the sleeve structure constitute the second tube body 102, and the portion located between the two second tube bodies 102 constitutes the first tube body 101 (see Figure 7 ). It can be understood that when the shaft sleeve structure is in an integrated form, the shaft sleeve structure does not have an axle 400, and the second tubes 102 at both ends of the shaft sleeve structure are rotatably connected to the wheels 500 respectively, and the shaft sleeve structure can adopt a hollow structure to reduce weight, or a solid structure to enhance bending resistance, which is not specifically limited here.

[0077] In some embodiments of the present invention, the connection structure 600 includes a transmission member 601, which is arranged on the outside of the wheel 500. The end of the axle 400 extends out of the first sleeve 100 and the second sleeve 200. The transmission member 601 is cooperatively connected with the end of the axle 400 and is fixedly connected to the side wall of the wheel 500. When the axle 400 rotates, it can drive the transmission member 601 to rotate, and the transmission member 601 transmits power to the wheel 500 to drive the wheel 500 to rotate.

[0078] Combination Figure 8In an optional solution, the connection structure 600 also includes a first connection flange 602 and a second connection flange 603. A spline structure is provided at the end of the axle 400. The first connection flange 602 is spline-matched with the axle 400 and fixedly connected. The second connection flange 603 is coaxially fixed to the wheel 500 by, for example, bolt connection or welding. The transmission member 601 is a flexible plate, which adopts a disc-shaped or annular structure and is bolted to the first connection flange 602 and the second connection flange 603 respectively.

[0079] Optionally, the transmission member 601 is made of carbon fiber.

[0080] In this embodiment, the transmission member 601 can achieve the characteristics of large radial stiffness and small axial stiffness, and only transmit the driving and braking torque applied to the axle 400 to the wheel 500 to achieve the rotation function. Since the axle 400 only bears torque, a small diameter combined with new materials can be used to achieve significant weight reduction. In addition, the deformable ability of the transmission member 601 can be used to achieve the function of releasing the axial relative displacement of the sleeve structure and the axle 400.

[0081] Combination Fig. 9 and Fig.10 In another optional solution, the transmission member 601 is a rigid member, for example, a rigid member made of aluminum alloy material, the transmission member 601 is spline-matched with the axle 400 and axially slidably connected, and the transmission member 601 is bolted to the wheel 500.

[0082] In this embodiment, the transmission member 601 and the axle 400 are clearance-fitted, transmission is achieved through a spline structure, and can slide relatively along the axial direction of the axle 400, thereby realizing the function of releasing the axial relative displacement of the sleeve structure and the axle 400 while meeting the transmission requirements.

[0083] Optionally, the transmission member 601 includes a shaft matching portion, a connecting portion and a wheel matching portion, wherein the shaft matching portion is a cylindrical structure, and an inner wall of which is provided with an internal spline so as to be suitable for being sleeved on the outer side of the axle 400 and forming a spline match with the axle 400; the connecting portion is fixedly connected to the shaft matching portion and the wheel matching portion respectively; the wheel matching portion is an annular structure, and a plurality of through holes are circumferentially provided, and the wheel matching portion is fixedly connected to the wheel 500 by bolts passing through the through holes.

[0084] Optionally, the side wall of the connecting part is configured as an outwardly convex arc structure, thereby enabling the connecting part to have better impact resistance and not easily damage foreign objects during rotation, and the cavity formed inside the connecting part can provide space for the installation of other components.

[0085] Optionally, sealing structures 604 are provided at both ends of the bearing 108 connecting the shaft sleeve structure and the wheel 500, for forming a sealing protection for the bearing 108. Furthermore, a limiting ring is provided on the inner side of the connecting portion, and the limiting ring is an annular structure with an L-shaped cross section. The limiting ring cooperates with the sealing structure 604 at the outer end of the bearing 108 to provide a better protection effect for the bearing 108.

[0086] In some embodiments of the present invention, the wheelset also includes a frame connector 700, one end of the frame connector 700 is connected to the traction plate seat 107 of the sleeve structure, and the other end is suitable for connecting to the positioning node 900 of the frame. By connecting the traction plate seat 107 and the frame through the frame connector 700, a series of positioning of the wheelset can be achieved.

[0087] The following is an exemplary introduction to two optional forms of the frame connector 700 in this embodiment:

[0088] See you later Figure 6 and Figure 7 In an optional form, the frame connector 700 is an elastic member, and the frame connector 700 is suitable for fixed connection with the shaft sleeve structure and the positioning node 900.

[0089] Specifically, the frame connector 700 adopts a fin plate structure, and its two ends are fixedly connected to the positioning node 900 and the traction pull plate seat 107 by bolts. The end of the frame connector 700 connected to the sleeve structure is flat along the axial direction of the sleeve structure in the width direction, thereby achieving sufficient longitudinal and transverse positioning stiffness and a smaller vertical stiffness. The deformation of the frame connector 700 is utilized to release the deflection displacement of the inter-spring components caused by the side rolling of the frame, thereby avoiding excessive stress caused by the deformation of the positioning device due to the deflection.

[0090] Combination Fig.11 and Fig.12 In another optional form, the frame connector 700 is a rigid member, the frame connector 700 is rotatably connected to the sleeve structure, and is suitable for being rotatably connected to the positioning node 900.

[0091] Specifically, the frame connector 700 includes a first connector 701 and a second connector 702 fixedly connected to the first connector 701. Two second connectors 702 are arranged in parallel and spaced apart. The first connector 701 and the second connector 702 are respectively provided with axial holes. The first connector 701 is adapted to be adapted to the traction plate seat 107 by using an adapter shaft which passes through the axial hole on the first connector 701 and is fixedly connected to the traction plate seat 107. The two second connectors 702 are adapted to be adapted to be adapted to the positioning node 900 by using an adapter shaft which passes through the axial holes of the two connectors at the same time.

[0092] In this embodiment, the rotational connection between the frame connector 700, the sleeve structure and the positioning node 900 is utilized to achieve sufficient longitudinal and lateral positioning stiffness, while achieving smaller vertical stiffness. The relative rotation between the frame connector 700, the sleeve structure and the positioning node 900 is utilized to release the deflection displacement of the inter-spring component caused by the lateral rolling of the frame, thereby avoiding excessive stress caused by deformation of the positioning device due to the deflection.

[0093] In some embodiments of the present invention, a pair of wheels 500 are elastic wheels. For example, a V-shaped elastic rubber 502 is installed between the rim 501 and the spoke plate 503 of the wheel 500, so that the wheel 500 has elastic deformation ability, which can achieve the functions of vibration reduction and noise reduction, and reduce the vibration of the rail wheel 500.

[0094] An embodiment of the present invention further provides a bogie, comprising the above-mentioned wheelset.

[0095] An embodiment of the present invention further provides a rail vehicle, comprising the above-mentioned bogie.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sleeve structure, characterized in that: including a first sleeve and a second sleeve; The first shaft sleeve and the second shaft sleeve are coaxial, and the first shaft sleeve and the second shaft sleeve are disposed on both sides of the gear box and are respectively suitable for being fixedly connected to the gear box; The first sleeve and the second sleeve are respectively provided with an axial through-hole, and the through-hole is suitable for passing an axle fixed coaxially with the wheel; The first sleeve includes a first tube body close to the gear box and a second tube body away from the gear box, the second sleeve includes a second tube body, the first tube body is a sleeve structure with a circular inner side and a square outer side, the second tube body is a circular sleeve structure, and the second tube body is suitable for being rotatably connected to the inner side of the wheel.

2. The sleeve structure according to claim 1, characterized in that: The ends of the first sleeve and the second sleeve connected to the gear box are provided with a bell-mouth structure, and the diameter of the bell-mouth structure gradually decreases from the end close to the gear box to the end far away from the gear box.

3. The sleeve structure according to claim 2, characterized in that: The bell mouth structure is a square bell mouth.

4. The sleeve structure according to claim 2 or 3, characterized in that: A flange is arranged on the outer side of one end of the bell-mouth structure facing the gear box, and the flange is suitable for being bolted to the gear box.

5. The sleeve structure according to claim 1, characterized in that: The first tube body of the first sleeve is provided with a motor hanger, and the motor hanger is used to connect the traction motor.

6. The sleeve structure according to claim 5, characterized in that: The motor hanger includes a plurality of lifting rings, which are disposed on the upper and lower sides of the first shaft sleeve, and the lifting rings are suitable for being connected with the traction motor bolts.

7. The sleeve structure according to claim 1, characterized in that: Also includes at least one of the following structures: a pair of boss structures, located on the upper sides of the first sleeve and the second sleeve, suitable for connecting with the leaf spring rubber block; A speed sensor, disposed on the first shaft sleeve or the second shaft sleeve, for measuring the rotation speed of the axle; A grounding device, disposed on the first sleeve or the second sleeve, and used for connecting a grounding wire; The traction plate seat is arranged on the first shaft sleeve or the second shaft sleeve and is suitable for connecting the frame.

8. A wheelset, characterized in that: A vehicle comprising an axle, a gear box, a pair of wheels and a sleeve structure as claimed in any one of claims 1 to 7; The shaft sleeve structure is fixedly connected to the gear box; The pair of wheels are disposed at two ends of the shaft sleeve structure, and the inner sides of the pair of wheels are rotatably connected to the corresponding second tube bodies; The axle is passed through the axle hole, and the end of the axle is fixedly connected to the corresponding wheel through a connecting structure.

9. A bogie, characterized in that: Comprising the wheelset as claimed in claim 8.

10. A rail vehicle, characterized in that: Comprising a bogie as claimed in claim 9.

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