Bogie and railway vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a bogie and a railway vehicle. The bogie comprises a framework, a first traction mechanism and a second traction mechanism. The first traction mechanism is longitudinally arranged on the framework, the first end is elastically connected with the framework, and the second end and the third end are rigidly connected with the framework; the second traction mechanism is longitudinally arranged on the framework, the first end is elastically connected with the framework, the second end and the third end are rigidly connected with the framework, and the twisting direction of the second traction mechanism is opposite to that of the first traction mechanism. According to the bogie and the railway vehicle, a longitudinal traction structure is adopted, the lower space is saved, and the lower limit is guaranteed; the torsion directions are opposite, so that the torque on the framework can be counteracted, the torsion influence on the framework is reduced, the stress is reduced, the stability of the framework is improved, and the service life of the framework is prolonged; in addition, the first traction mechanism and the second traction mechanism are of a three-point suspension type structure with two-point rigid connection and one-point elastic connection, and the advantages of being simple in structure and convenient to assemble are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and provides a bogie and a rail vehicle. Background Art

[0002] The curve radius of urban rail transit lines is usually small, and the curve radius of some lines is even less than 60 m. The problems brought about by this are large wheel-rail forces, fast wheel wear, low life, high maintenance costs, and the floor surface of urban rail vehicles is low for the convenience of passengers getting on and off.

[0003] In the related technologies of rail vehicles, there is a large installation space for the bogie. When the rail vehicle passes through a line with a small curve radius, the torque of the motor has an obvious torsional influence on the frame, resulting in increased stress and reduced service life of the bogie. Therefore, how to save the installation space, ensure the lower clearance limit, reduce the torsional influence of the motor on the frame, and reduce the stress are urgent problems to be solved at present. Summary of the Invention

[0004] Embodiments of the present invention provide a bogie and a rail vehicle to solve the defects in the related technologies that the installation space of the bogie is large, and when passing through a line with a small curve radius, the torque of the motor has an obvious torsional influence on the frame, resulting in increased stress and reduced service life of the bogie.

[0005] A bogie provided by the present invention includes: A frame; A first traction mechanism longitudinally disposed on the frame, with the first end elastically connected to the frame and the second and third ends rigidly connected to the frame; A second traction mechanism longitudinally disposed on the frame, with the first end elastically connected to the frame and the second and third ends rigidly connected to the frame, and the torsional direction of the second traction mechanism is opposite to that of the first traction mechanism.

[0006] According to an embodiment of the present invention, the first end of the first traction mechanism is suspended to the frame through an elastic node, and the second and third ends of the first traction mechanism are respectively connected to the frame through rigid nodes; the first end of the second traction mechanism is suspended to the frame through an elastic node, and the second and third ends of the second traction mechanism are respectively connected to the frame through rigid nodes.

[0007] According to an embodiment of the present invention, the first traction mechanism includes: A first housing provided with two first rigid nodes, and the first housing is connected to the frame through the two first rigid nodes; The first traction motor is provided on the first housing, and a first elastic node is provided on the first traction motor. The first traction motor is suspended to the frame through the first elastic node, and the two first rigid nodes and the one first elastic node form a three-point suspension structure.

[0008] According to an embodiment of the present invention, the second traction mechanism includes: A second housing is provided with two second rigid nodes, and the second housing is connected to the frame through the two second rigid nodes; A second traction motor is provided on the second housing, and a second elastic node is provided on the second traction motor. The second traction motor is suspended to the frame through the second elastic node, and the two second rigid nodes and the one second elastic node form a three-point suspension structure.

[0009] According to an embodiment of the present invention, it further includes: A mounting seat, the mounting seat is connected to the frame, and the second end and the third end of the first traction mechanism are connected to the mounting seat, and the second end and the third end of the second traction mechanism are connected to the mounting seat.

[0010] According to an embodiment of the present invention, it further includes: A passive magnetic track braking device is connected to the frame.

[0011] According to an embodiment of the present invention, it further includes: An elastic member, one end of which is connected to the frame, and the other end is connected to the passive magnetic track braking device to suspend the passive magnetic track braking device to the frame through the elastic member.

[0012] According to an embodiment of the present invention, it further includes: An axle box is provided on the frame and is located inside the wheel set.

[0013] According to an embodiment of the present invention, it further includes: An air spring, one end of which is connected to the frame; A bolster is connected to the other end of the air spring, and the bolster is provided on the secondary suspension device.

[0014] A rail vehicle provided by the present invention includes a bogie as described in the above embodiments of the present invention.

[0015] A bogie provided by the present invention includes: a frame, a first traction mechanism, and a second traction mechanism. The first traction mechanism is longitudinally disposed on the frame, with its first end elastically connected to the frame and its second and third ends rigidly connected to the frame; the second traction mechanism is longitudinally disposed on the frame, with its first end elastically connected to the frame and its second and third ends rigidly connected to the frame, and the torsion direction of the second traction mechanism is opposite to that of the first traction mechanism. In the bogie provided by the present invention, both the first traction mechanism and the second traction mechanism adopt a longitudinal structure, which can save more space at the lower part and ensure the lower clearance; and their torsion directions are opposite, which can offset the torque on the frame during operation, thereby reducing the torsional influence on the frame, reducing stress, and improving the stability and service life of the frame; in addition, the first traction mechanism and the second traction mechanism adopt a three-point suspension structure with two-point rigid connection and one-point elastic connection, which has the advantages of simple structure and convenient assembly.

[0016] Further, the present invention also provides a rail vehicle. Since it includes the bogie in the above-mentioned embodiment of the present invention, it has the same advantages as above. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of the bogie provided in one embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the structures of the first traction mechanism and the second traction mechanism provided in one embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the specific structure of the frame and the passive magnetic track brake device provided in one embodiment of the present invention.

[0021] Figure 4 is Figure 3 a partial schematic diagram of part A in

[0022] Figure 5 It is a schematic diagram of the structure of the bolster with an air spring provided in one embodiment of the present invention.

[0023] Reference Signs: 100: Frame; 200: First traction mechanism; 300: Second traction mechanism; 400: Foundation braking device; 500: Axle box; 600: Bolster; 700: Vertical gearbox; 800: Passive magnetic track braking device; 900: Brake disc; 1: Rigid node; 2: Elastic node; 3: First housing; 4: First traction motor; 5: Second housing; 6: Second traction motor; 7: Elastic member; 8: Air spring. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of this embodiment, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this embodiment.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0027] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0028] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be 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", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] As Figures 1 to 5 shown, the present invention provides a bogie. The bogie includes: a frame 100, a first traction mechanism 200, and a second traction mechanism 300.

[0030] The frame 100; The first traction mechanism 200 is longitudinally disposed on the frame 100, and the first end is elastically connected to the frame 100, and the second end and the third end are rigidly connected to the frame 100; The second traction mechanism 300 is longitudinally disposed on the frame 100, and the first end is elastically connected to the frame 100, and the second end and the third end are rigidly connected to the frame 100, and the torsion direction of the second traction mechanism 300 is opposite to that of the first traction mechanism 200.

[0031] Specifically, in addition to the frame 100, the first traction mechanism 200, and the second traction mechanism 300, the bogie of the present invention further includes: a foundation braking device 400, an inboard axle box 500, a secondary suspension device with a bolster 600, a vertical gear drive device, a magnetic track braking device, etc., which will be specifically described in the following embodiments.

[0032] Both the first traction mechanism 200 and the second traction mechanism 300 in the present invention can adopt the form of traction motors to provide traction power for the rail vehicle. Both the first traction mechanism 200 and the second traction mechanism 300 adopt a longitudinal structure, that is, both are longitudinal motors, and moreover, the torque directions output by the two are opposite, so that the two traction motors can cancel the torque on the frame 100 during operation, thereby reducing the torsional influence on the frame 100, reducing stress, and improving the stability and service life of the frame 100.

[0033] It should be understood that the first traction mechanism 200 and the second traction mechanism 300 being longitudinally disposed on the frame 100 means that the traction motors of the two are installed along the longitudinal axis of the rail vehicle.

[0034] Furthermore, the first traction mechanism 200 and the second traction mechanism 300 are connected by a rigid node 1 to form a longitudinally arranged structure. In the following embodiments, a motor base is connected to two rigid nodes 1 outside the first traction mechanism 200 and the second traction mechanism 300 to form an integral longitudinally arranged structure, which is then assembled onto the frame 100. In the above solution, when the first traction mechanism 200 and the second traction mechanism 300 are working, their positive and negative torques cancel each other out on the motor base. Therefore, the influence of the motor torsion on the frame 100 is reduced.

[0035] Of course, the first traction mechanism 200 and the second traction mechanism 300 can also be separately installed on the frame 100 without passing through the motor base. When working, although the generated torque will have an impact on the local part of the frame 100, generally speaking, the positive and negative torques will cancel each other out. Compared with the large torque impact of the existing traction motor on a certain direction of the frame 100, it still has a good torque cancellation effect, thereby improving the stability and service life of the frame 100.

[0036] In addition, in the present invention, the general four-point assembly structure for the first traction mechanism 200 and the second traction mechanism 300 is improved. Both the first traction mechanism 200 and the second traction mechanism 300 are elastically connected to the frame 100 at the first end, and rigidly connected to the frame 100 at the second end and the third end. Since the torques of the first traction mechanism 200 and the second traction mechanism 300 cancel each other out, the rigid connections of their second ends and third ends to the frame 100 mainly play a role in vertical support to prevent tilting; the elastic connection of the first end to the frame 100 plays a role in overall suspension.

[0037] It should be understood that the first end in the first traction mechanism 200 and the second traction mechanism 300 is the non-driving end, that is, located on the outer surface of the non-output end of the motor. Preferably, the upper surface of the motor housing is suspended to the frame 100 through an elastic node 2.

[0038] A bogie provided by the present invention includes: a frame 100, a first traction mechanism 200, and a second traction mechanism 300. The first traction mechanism 200 is longitudinally disposed on the frame 100, with its first end elastically connected to the frame 100 and its second and third ends rigidly connected to the frame 100; the second traction mechanism 300 is longitudinally disposed on the frame 100, with its first end elastically connected to the frame 100 and its second and third ends rigidly connected to the frame 100, and the torsional direction of the second traction mechanism 300 is opposite to that of the first traction mechanism 200. For the bogie provided by the present invention, both the first traction mechanism 200 and the second traction mechanism 300 adopt a longitudinal structure, which can save more lower space and ensure the lower clearance; and their torsional directions are opposite, so that the torque on the frame 100 can be offset during operation, thereby reducing the torsional influence on the frame 100, reducing stress, and improving the stability and service life of the frame 100; in addition, the first traction mechanism 200 and the second traction mechanism 300 adopt a three-point suspension structure with two-point rigid connection and one-point elastic connection, which has the advantages of simple structure and convenient assembly.

[0039] In one embodiment of the present invention, the first end of the first traction mechanism 200 is suspended to the frame 100 through an elastic node 2, and the second and third ends of the first traction mechanism 200 are respectively connected to the frame 100 through rigid nodes 1; the first end of the second traction mechanism 300 is suspended to the frame 100 through an elastic node 2, and the second and third ends of the second traction mechanism 300 are respectively connected to the frame 100 through rigid nodes 1. In this embodiment, both the first traction mechanism 200 and the second traction mechanism 300 adopt a three-point assembly form, where two points are rigid connections to the frame 100 and one point is an elastic connection to the frame 100.

[0040] Preferably, the elastic node is composed of a composite of rubber and other reinforcing materials (such as metal), aiming to provide certain elastic and damping characteristics to absorb vibration, reduce noise, and allow moderate relative movement between components; the rigid node refers to a type of node used to connect different components and transfer loads in a mechanical structure; compared with the elastic node, the main feature of the rigid node is that it hardly provides any elastic deformation or vibration damping function, but focuses on providing a connection with high strength and high stiffness to ensure a fixed relative position and angle between the connected components.

[0041] In one embodiment of the present invention, the first traction mechanism 200 includes: a first housing 3 and a first traction motor 4. Among them, the first housing 3 is provided with two first rigid nodes, and the first housing 3 is connected to the frame 100 through the two first rigid nodes; the first traction motor 4 is arranged on the first housing 3, and a first elastic node is arranged on the first traction motor 4. The first traction motor 4 is suspended from the frame 100 through the first elastic node, and the two first rigid nodes and the first elastic node form a three-point suspension structure.

[0042] In the above embodiment, the first traction mechanism 200 is composed of a first housing 3 (i.e., the motor housing) and a first traction motor 4. Two rigid nodes 1 are arranged on the outer side of the first housing 3, and the first housing 3 is connected to the frame 100 through the two rigid nodes 1. The first traction motor 4 is fixed on the first housing 3, so that the first traction motor 4 is connected to the frame 100 through the two rigid nodes 1 on the first housing 3; at the same time, an elastic node 2 is arranged at the non-output end of the first traction motor 4, and the first traction motor 4 is suspended from the frame 100 through the elastic node 2. In this embodiment, the vertical support of the first traction motor 4 is realized through the rigid node 1, and it is suspended from the frame 100 through the elastic node 2.

[0043] In the above embodiment, the first traction motor 4 is a longitudinally-mounted motor, that is, it is installed along the longitudinal axis of the rail vehicle. On the one hand, the longitudinally-mounted motor can improve space utilization and the overall design balance. On the other hand, it is also convenient for the installation of another longitudinally-mounted motor, so that the torques can cancel each other out.

[0044] In one embodiment of the present invention, the second traction mechanism 300 includes: a second housing 5 and a second traction motor 6. Among them, the second housing 5 is provided with two second rigid nodes, and the second housing 5 is connected to the frame 100 through the two second rigid nodes; the second traction motor 6 is arranged on the second housing 5, and a second elastic node is arranged on the second traction motor 6. The second traction motor 6 is suspended from the frame 100 through the second elastic node, and the two second rigid nodes and the second elastic node form a three-point suspension structure.

[0045] In the above embodiment, the second traction mechanism 300 is composed of a second housing 5 (i.e., the motor housing) and a second traction motor 6. Two rigid nodes 1 are arranged on the outer side of the second housing 5, and the second housing 5 is connected to the frame 100 through the two rigid nodes 1. The second traction motor 6 is fixed on the second housing 5, so that the second traction motor 6 is connected to the frame 100 through the two rigid nodes 1 on the second housing 5; at the same time, an elastic node 2 is arranged at the non-output end of the second traction motor 6, and the second traction motor 6 is suspended from the frame 100 through the elastic node 2. In this embodiment, the vertical support of the second traction motor 6 is realized through the rigid node 1, and it is suspended from the frame 100 through the elastic node 2.

[0046] In the above embodiment, the second traction motor 6 is a longitudinally-mounted motor, that is, it is mounted along the longitudinal axis of the rail vehicle. On the one hand, the longitudinally-mounted motor can improve space utilization and overall design balance. On the other hand, it is also convenient for the installation of another longitudinally-mounted motor, so that the torques can cancel each other out.

[0047] In one embodiment of the present invention, the bogie further includes: a mounting seat, which is connected to the frame 100, and the second end and the third end of the first traction mechanism 200 are connected to the mounting seat, and the second end and the third end of the second traction mechanism 300 are connected to the mounting seat. Preferably, the mounting seat is a motor seat, and the first traction motor 4 and the second traction motor 6 are mounted on the motor seat through the rigid nodes 1 on their motor housings to form a longitudinally-mounted integral structure, and this structure is integrally assembled onto the frame 100. The forward and reverse rotations of the two traction motors cancel out the torques on the motor seat. Therefore, the torque influence of the above integral structure on the frame 100 is reduced, and the stress is decreased.

[0048] It should be understood that due to the torque cancellation effect of the two motors, the four-point suspension in the prior art can be simplified to a three-point suspension structure. Because in the prior art, when the motor is working, a four-point suspension structure is required to achieve anti-torsion; but in the present invention, the two motors are installed together, which can cancel out the torques, so that a three-point suspension structure that does not require anti-torsion can be used. The two rigid nodes 1 only act as supports, and the elastic node 2 only acts as a suspension. Compared with the four-point suspension structure, the present invention simplifies the structure while ensuring the suspension function.

[0049] In addition, in order to ensure the stable assembly of the first traction motor 4 and the second traction motor 6, the rigid nodes 1 on the first housing 3 and the rigid nodes 1 on the second housing 5 are located on different sides, and cooperate with the elastic node 2 to suspend the traction motor to the frame 100.

[0050] In one embodiment of the present invention, the bogie further includes: a passive magnetic rail braking device 800, which is connected to the frame 100.

[0051] In one embodiment of the present invention, the bogie further includes: an elastic member 7, one end of which is connected to the frame 100, and the other end of which is connected to the passive magnetic rail braking device 800 to suspend the passive magnetic rail braking device 800 to the frame 100 through the elastic member 7. Preferably, the elastic member 7 can be an air spring 8, a steel spring, a rubber spring or other spring structures.

[0052] In the above embodiments, the passive magnetic track braking device 800 adopts a unique elastic suspension above the spring. Compared with the traditional cylinder actuating method (high-suspended magnetic track braking device), the weight is reduced by 50%. In the above embodiments, by utilizing the characteristics of large primary suspension stiffness and low deflection of rubber nodes, an installation form of a low-suspended magnetic track braking device (the passive magnetic track braking device 800) that can be installed on the frame 100 through rubber nodes is provided; through the above structure, the installation of the frame 100 of the passive magnetic track device is realized, the weight is reduced, and the braking function is satisfied.

[0053] In one embodiment of the present invention, the bogie further includes: a journal box 500, which is provided on the frame 100 and located inside the wheel set. In this embodiment, the journal box 500 adopts an in-built design, integrating the journal box 500 and related suspension components inside the frame 100 instead of being exposed outside. This design method helps to improve the running efficiency, stability and maintenance convenience of the train. Further, adopting an in-built structure of the journal box 500 with a small wheelbase, the frame 100 adopts a flexible design and small size, and the overall weight of the bogie is reduced by about 10% compared with the traditional bogie.

[0054] In one embodiment of the present invention, the bogie further includes: an air spring 8 and a bolster 600. One end of the air spring 8 is connected to the frame 100; the bolster 600 is connected to the other end of the air spring 8, and the bolster 600 is provided on the secondary suspension device. In this embodiment, a bolster 600 is installed between the air spring 8 and the car body, and the bolster 600 is arranged on the secondary suspension, reducing the yaw moment between the car body and the bogie, having excellent curve negotiation performance, and reducing wheel wear.

[0055] In one embodiment of the present invention, the vertical gear drive device adopts a vertical gearbox 700, which has functions such as a compact design, efficient transmission, durability, maintenance convenience and vibration damping design.

[0056] In one embodiment of the present invention, an external brake disc 900 is adopted. The brake disc 900 is installed outside the wheel set at both ends of the axle. This design is opposite to the in-built braking system, which usually integrates the braking components inside the bogie or near the axle center. Adopting an external axle disc structure, the brake disc 900 can be replaced without removing the wheels, which is convenient for maintenance. Adopting the structure of the external brake disc 900, its replacement is simple, reducing the maintenance cost.

[0057] The present invention also provides a rail vehicle. The rail vehicle includes: the bogie in the above embodiments of the present invention.

[0058] The present invention also provides a rail vehicle. Since it includes the bogie in the above embodiments of the present invention, it has the same advantages as above.

[0059] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative work.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bogie, characterized in that: include: Frame (100); A first traction mechanism (200) is longitudinally disposed on the frame (100), with a first end elastically connected to the frame (100), and a second end and a third end rigidly connected to the frame (100); The second traction mechanism (300) is longitudinally disposed on the frame (100), and has a first end elastically connected to the frame (100), a second end and a third end rigidly connected to the frame (100), and a torsional direction of the second traction mechanism (300) is opposite to that of the first traction mechanism (200).

2. The bogie according to claim 1, characterized in that: The first end of the first traction mechanism (200) is suspended to the frame (100) via an elastic node (2), and the second end and the third end of the first traction mechanism (200) are respectively connected to the frame (100) via rigid nodes (1); The first end of the second traction mechanism (300) is suspended to the frame (100) via an elastic node (2), and the second end and the third end of the second traction mechanism (300) are respectively connected to the frame (100) via rigid nodes (1).

3. The bogie according to claim 2, characterized in that: The first traction mechanism (200) comprises: A first shell (3) is provided with two first rigid nodes, and the first shell (3) is connected to the frame (100) via the two first rigid nodes; A first traction motor (4) is arranged on the first housing (3), and a first elastic node is provided on the first traction motor (4); the first traction motor (4) is suspended to the frame (100) via the first elastic node, and the two first rigid nodes and the one first elastic node form a three-point suspension structure.

4. The bogie according to claim 2, characterized in that: The second traction mechanism (300) comprises: A second outer shell (5) is provided with two second rigid nodes, and the second outer shell (5) is connected to the frame (100) via the two second rigid nodes; A second traction motor (6) is arranged on the second housing (5), and a second elastic node is provided on the second traction motor (6). The second traction motor (6) is suspended to the frame (100) via the second elastic node, and the two second rigid nodes and the one second elastic node form a three-point suspension structure.

5. The bogie according to claim 1, characterized in that: Also includes: A mounting seat, the mounting seat is connected to the frame (100), the second end and the third end of the first traction mechanism (200) are connected to the mounting seat, and the second end and the third end of the second traction mechanism (300) are connected to the mounting seat.

6. The bogie according to claim 1, characterized in that: Also includes: A passive magnetic track braking device (800) is connected to the frame (100).

7. The bogie according to claim 6, characterized in that Also includes: An elastic member (7) has one end connected to the frame (100) and the other end connected to the passive magnetic track braking device (800), so as to suspend the passive magnetic track braking device (800) to the frame (100) via the elastic member (7).

8. The bogie according to any one of claims 1 to 7, characterized in that Also includes: The axle box (500) is arranged on the frame (100) and is located on the inner side of the wheelset.

9. The bogie according to any one of claims 1 to 7, characterized in that: Also includes: An air spring (8), one end of which is connected to the frame (100); A bolster (600) is connected to the other end of the air spring (8), and the bolster (600) is arranged on the secondary suspension device.

10. A rail vehicle, characterized in that: include: A bogie as claimed in any one of claims 1 to 9.

Images