Bogie and railway vehicle

Abstract

This application provides a bogie and a rail vehicle. The air spring in the bogie includes an air spring body and an air spring cover. The air spring body has an air spring chamber. The air spring cover includes an air spring top plate and an air spring side plate. The air spring side plate is vertically disposed on the lower surface of the air spring top plate and forms a ring. The air spring side plate and the air spring top plate form an additional air chamber, which communicates with the air spring chamber to improve the load-bearing capacity of the air spring and thus improve the buffering capacity. The air spring cover has a vertical damper interface and an anti-roll torsion bar interface. The bottom end of the vertical damper is connected to the frame, and the top end is connected to the vertical damper interface of the air spring cover. The middle part of the anti-roll torsion bar is connected to the frame, and the end is connected to the anti-roll torsion bar interface of the air spring cover. Integrating the vertical damper and the anti-roll torsion bar into the air spring reduces the number of interfaces connected to the car body, thereby simplifying the car body structure and reducing the installation process after the car is dismounted.

Description

Technical Field

[0001] This application relates to rail vehicle technology, and more particularly to a bogie and a rail vehicle. Background Technology

[0002] The bogie is one of the important components of a rail vehicle, used to support the car body and enable running and steering functions. Between the bogie and the car body, there are structures that buffer the forces acting between them, such as air springs, vertical dampers, anti-hunting dampers, and anti-roll torsion bars.

[0003] In bogie-based designs, components such as air springs, vertical dampers, anti-hunting dampers, and anti-roll torsion bars are all connected to the bogie beam, which is then uniformly installed onto the car body. However, due to the significant weight and bulkiness of the bogie beam, it no longer meets the requirements for lightweight bogie design. Currently, these buffer structures are typically installed separately onto the car body, requiring multiple mounting interfaces. After unloading, each buffer structure must be individually installed onto the car body, a cumbersome process that is inconvenient for both assembly and disassembly. Summary of the Invention

[0004] To address one of the aforementioned technical deficiencies, this application provides a bogie and a rail vehicle.

[0005] According to a first aspect of the embodiments of this application, a bogie is provided, including: a frame, an air spring, a vertical damper, and an anti-roll torsion bar; the air spring includes: an air spring body and an air spring cover, the bottom end of the air spring body is mounted on the frame; the air spring body has an air spring chamber; the air spring cover is disposed on the top end of the air spring body; The air spring cover includes: an air spring top plate and an air spring side plate; the air spring side plate is vertically disposed on the lower surface of the air spring top plate and forms a ring, the air spring side plate and the air spring top plate form an auxiliary air chamber, and the auxiliary air chamber is connected to the air spring chamber; The air spring cover is equipped with a vertical damper interface and an anti-roll torsion bar interface; the bottom end of the vertical damper is connected to the frame, and the top end is connected to the vertical damper interface of the air spring cover; the middle part of the anti-roll torsion bar is connected to the frame, and the end is connected to the anti-roll torsion bar interface of the air spring cover.

[0006] According to a second aspect of the embodiments of this application, a rail vehicle is provided, including: a bogie as described above.

[0007] The technical solution provided in this application embodiment includes a bogie comprising: a frame, an air spring, a vertical damper, and an anti-roll torsion bar; the air spring comprises: an air spring body and an air spring cover, the bottom end of the air spring body being mounted on the frame; the air spring body having an air spring chamber inside; the air spring cover covering the top of the air spring body; the air spring cover comprising: an air spring top plate and an air spring side plate; the air spring side plate being vertically disposed on the lower surface of the air spring top plate and forming an annular shape, the air spring side plate and the air spring top plate forming an additional air chamber, the additional air chamber communicating with the air spring chamber, which can enhance the load-bearing capacity of the air spring, thereby improving the cushioning capacity. In addition, the air spring cover is equipped with a vertical damper interface and an anti-roll torsion bar interface; the bottom end of the vertical damper is connected to the frame, and the top end is connected to the vertical damper interface of the air spring cover; the middle part of the anti-roll torsion bar is connected to the frame, and the end is connected to the anti-roll torsion bar interface of the air spring cover. Integrating the vertical damper and the anti-roll torsion bar into the air spring can reduce the number of interfaces connected to the vehicle body, thereby simplifying the vehicle body structure and reducing the installation process after the vehicle is dismounted. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the bogie structure provided in an embodiment of this application; Figure 2 A side view of a bogie provided in an embodiment of this application; Figure 3 for Figure 1 Enlarged view of some of the structures in the image; Figure 4 A schematic diagram showing the connection between the air spring and various buffer structures provided in the embodiments of this application; Figure 5 A cross-sectional view of an air spring provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the air spring cover provided in an embodiment of this application; Figure 7 This is another schematic diagram of the air spring cover provided in an embodiment of this application; Figure 8 This is a schematic diagram of the sand-spreading device provided in the embodiments of this application; Figure 9 This is another structural schematic diagram of the sand-spreading device provided in the embodiments of this application; Figure 10 This is a partial schematic diagram of the sand-spreading device provided in the embodiments of this application; Figure 11 This is a partial schematic diagram from another angle of the sand-spreading device provided in the embodiments of this application; Figure 12 This is a schematic diagram of the auxiliary seat in the sand-spreading device provided in the embodiments of this application; Figure 13 This is a schematic diagram of the structure of the sand spreading base plate in the sand spreading device provided in the embodiments of this application.

[0009] Figure label: 1-Side beam; 2-Crossbeam; 3-Sand spreading device; 31-Auxiliary seat; 32-Connecting plate; 33-Sand spreading seat plate; 34-Sand spreading seat; 35-Back plate; 36-Anti-loosening seat; 361-Boss; 41-First elongated hole; 42-Second elongated hole; 43-Mounting round hole; 51 - First bolt; 52 - First nut; 6-Air spring; 61-Air spring body; 611-Air spring chamber; 62-Air spring top cover; 621-Air spring top plate; 622-Air spring side plate; 623-Additional air chamber; 624-Vertical damper interface; 6241-Vertical damper spare interface; 625-Anti-roll torsion bar interface; 626-Support rib; 627-Through hole; 628-Reinforcing rib; 6291-Car body mounting interface; 6292-Car body positioning component; 6293-Anti-rotation pin; 63-Anti-hunting mounting bracket; 631-Top longitudinal beam; 632-Transition beam; 633-Anti-hunting connection part; 7-Vertical vibration damper; 8-Anti-roll torsion bar; 9-Anti-hunting vibration damper. Detailed Implementation

[0010] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0011] This embodiment provides a bogie applicable to rail vehicles, such as EMU trains, subway vehicles, and light rail vehicles. The bogie provided in this embodiment improves upon the complex assembly and disassembly of the buffer structure in traditional solutions.

[0012] In this embodiment, the direction of travel of the rail vehicle is referred to as the longitudinal direction, which is also the length direction of the vehicle. The width direction of the rail vehicle is referred to as the transverse direction.

[0013] like Figures 1 to 7As shown, the bogie provided in this embodiment includes a frame and wheelsets. The frame, as the main structure of the bogie, plays a primary supporting role and provides connection interfaces for various components. The frame includes side beams 1 and crossbeams 2, with the two side beams 1 arranged side-by-side and the crossbeam 2 connecting the two side beams 1 at their midpoints. Wheelsets are located at both longitudinal ends of the frame, and each wheelset includes an axle, a wheel, and an axle box.

[0014] The bogie also includes: air springs 6, vertical dampers 7, and anti-roll torsion bars 8. These components can all buffer the forces between the bogie and the car body.

[0015] The air spring 6 includes an air spring body 61 and an air spring cover 62. The bottom end of the air spring body 61 is mounted to the frame, and an air spring chamber 611 is provided inside the air spring body 611, which is filled with gas. The air spring cover 62 is placed on the top end of the air spring body 61, sealing the gas inside the air spring chamber 611. When subjected to a vertical load from the vehicle body, the air spring deforms vertically, thus buffering the vertical load from the vehicle body. The air spring body 61 can adopt existing solutions in the art, and this embodiment is not limited thereto.

[0016] This embodiment primarily optimizes the air spring cover 62. The air spring cover 62 includes an air spring top plate 621 and an air spring side plate 622. The air spring side plate 622 is vertically disposed on the lower surface of the air spring top plate 621 and forms a ring. The air spring side plate 622 and the air spring top plate 621 form an auxiliary air chamber 623, which communicates with the air spring chamber 611. The auxiliary air chamber 623 supplements the inflation volume, which can improve the load-bearing capacity of the air spring 6 to adapt to a wider range of loads, and also improve the cushioning capacity and enhance comfort.

[0017] Additionally, the air spring cover 62 is provided with a vertical damper interface 624 and an anti-roll torsion bar interface 625. The bottom end of the vertical damper 7 is connected to the frame, and the top end is connected to the vertical damper interface 624. The middle part of the anti-roll torsion bar 8 is connected to the frame, and the end is connected to the anti-roll torsion bar interface 625.

[0018] This is equivalent to integrating the vertical shock absorber 7 and the anti-roll torsion bar 8 between the frame and the air spring cover 62. The vehicle body only needs to be connected to the air spring cover, and the shock absorber interface is no longer set on the vehicle body. On the one hand, this simplifies the vehicle body structure, and on the other hand, the shock absorber can be pre-installed on the air spring, reducing the assembly process after the vehicle is dismounted.

[0019] The technical solution provided in this embodiment includes a bogie comprising: a frame, an air spring, a vertical damper, and an anti-roll torsion bar; the air spring comprises: an air spring body and an air spring cover, the bottom end of the air spring body being mounted on the frame; the air spring body having an air spring chamber inside; the air spring cover covering the top of the air spring body; the air spring cover comprising: an air spring top plate and an air spring side plate; the air spring side plate being vertically disposed on the lower surface of the air spring top plate and forming a ring, the air spring side plate and the air spring top plate forming an additional air chamber, the additional air chamber communicating with the air spring chamber, which can enhance the load-bearing capacity of the air spring, thereby improving the cushioning capacity. In addition, the air spring cover is equipped with a vertical damper interface and an anti-roll torsion bar interface; the bottom end of the vertical damper is connected to the frame, and the top end is connected to the vertical damper interface of the air spring cover; the middle part of the anti-roll torsion bar is connected to the frame, and the end is connected to the anti-roll torsion bar interface of the air spring cover. Integrating the vertical damper and the anti-roll torsion bar into the air spring can reduce the number of interfaces connected to the vehicle body, thereby simplifying the vehicle body structure and reducing the installation process after the vehicle is dismounted.

[0020] Based on the above technical solution, this embodiment illustrates the implementation of the air spring cover 62. The air spring cover 62 in this embodiment is higher than a conventional air spring cover, with the protruding portion serving as an additional air chamber 623. For example, the height of the air spring cover 62 in this embodiment is approximately 110mm, and the additional air chamber 623 increases the gas volume by approximately 20L, equivalent to an increase of about 50%, significantly improving cushioning capacity and enhancing vehicle comfort. The specific height of the air spring cover 62 can be set according to the distance between the vehicle body and the bogie.

[0021] Furthermore, a support rib 626 is provided in the additional air chamber of the air spring cover 62. The support rib 626 extends radially along the air spring cover 62, and both ends of the support rib 626 are connected to the air spring side plate 622.

[0022] There are three support ribs 626, with an included angle of 60° between any two adjacent support ribs 626. The top of each support rib 626 extends to connect with the top plate 621 of the air spring, and the bottom of each support rib 626 extends to be flush with the bottom of the side plate 622 of the air spring. The support ribs 626 enhance the strength of the air spring cover 62.

[0023] Furthermore, the support rib 626 has through holes 627 extending along the thickness direction, achieving weight reduction without affecting strength.

[0024] In addition, the support rib 626 is also provided with reinforcing ribs 628, and through holes 627 are provided on both sides of the reinforcing ribs 628. The reinforcing ribs 628 can further improve the strength of the support rib 626, thereby improving the strength of the air spring cover 62.

[0025] The air spring cover 62 can be integrally cast from aluminum alloy, resulting in higher strength, higher reliability, and lighter weight. The connection method between the air spring cover 62 and the air spring body 61 is the same as the traditional solution, ensuring the maturity of the product structure. No changes to the structure of the air spring body 61 are required, facilitating installation and maintenance.

[0026] Based on the above scheme, a circular area is defined in the middle of the air spring cover 62 for connection with the air spring body 61. The outer periphery of the air spring cover 62 extends to form interfaces for connection with various structures. Specifically, the air spring cover 62 is provided with three vehicle body mounting interfaces 6291 for connection to the vehicle body via bolts.

[0027] The upper cover 62 of the air spring is provided with a body positioning component 6292 and an anti-rotation pin 6293 in the middle, which are used to cooperate with the positioning hole and pin hole at the bottom of the body. The body positioning component 6292 is inserted into the positioning hole at the bottom of the body for installation and positioning, and the anti-rotation pin 6293 is inserted into the pin hole at the bottom of the body and cooperates with the body positioning component 6292 to achieve two-point positioning, thereby preventing relative rotation between the air spring 6 and the body.

[0028] The air spring cover 62 is also provided with a vertical damper interface 624 and a spare vertical damper interface 6241 for connection to the vertical damper 7. Normally, the vertical damper 7 is connected to the vertical damper interface 624 by bolts. When the vertical damper interface 624 fails to install or when an additional vertical damper is added, the vertical damper 7 is connected to the spare vertical damper interface 6241.

[0029] The air spring cover 62 is also provided with an anti-roll torsion bar interface 625 for installing the anti-roll torsion bar 8.

[0030] By using the aforementioned air spring cover 62, the vertical damper 7 and the anti-roll torsion bar 8 are integrated and installed onto the air spring cover 62, reducing the number of interfaces on the vehicle body and thus simplifying the vehicle body structure.

[0031] In addition, referring to the structure of the air spring cover in the traditional scheme, it is also equipped with a pressure test spare hole and a mounting hole for connecting with the air spring body.

[0032] Based on the above technical solution, an anti-hunting mounting bracket 63 is also adopted, which is set on the outer side of the air spring 6. The top end of the anti-hunting mounting bracket 63 is used to connect to the vehicle body, and the bottom end is connected to the anti-hunting shock absorber 9. That is to say, the anti-hunting shock absorber 9 is mounted to the vehicle body through the anti-hunting mounting bracket 63.

[0033] One specific embodiment is as follows: the anti-hunting mounting bracket 63 includes a top longitudinal beam 631 and a transition beam 632. The top longitudinal beam 631 extends longitudinally, with its first section close to the vertical damper 7 and its second end away from the vertical damper 7. The top end of the top longitudinal beam 631 is connected to the vehicle body.

[0034] The top end of the transition beam 632 matches the length of the top longitudinal beam 631. The bottom end of the transition beam 632 forms an anti-hunting connection 633, which is located below the second end of the top longitudinal beam 631, and its length is less than half the length of the top longitudinal beam 631. The transition beam 632 is approximately triangular in shape, making way for the anti-hunting damper 9. The anti-hunting damper 9 extends longitudinally and connects to the anti-hunting connection 633.

[0035] Furthermore, at least two weight-reduction holes are opened on the transition beam 632 to play a role in lightweight design.

[0036] The air spring cover provided in this embodiment integrates the mounting bases for the vertical dampers and anti-roll torsion bars in the secondary suspension system, achieving multi-purpose functionality in one unit. It features a compact structure, small footprint, and lightweight construction achieved through a cast aluminum structure. This allows the weight of the bogie's bolster beam to be reduced from approximately 1 ton to a total weight of 100 kg by replacing two air spring covers, significantly reducing the bogie's weight. Simultaneously, the integrated installation of secondary suspension system components facilitates rapid vehicle assembly, reducing the structural complexity of the car body and substantially lowering vehicle manufacturing costs. The combination of air springs and secondary vertical hydraulic dampers avoids the problem of poor vehicle comfort caused by using only air springs with damping holes in subways, while also solving the problems of high weight, high energy consumption, and high cost associated with using a combination of air springs and secondary vertical hydraulic dampers in high-speed trains. This results in a high-performance urban rail vehicle bogie product with lightweight, intelligent, low-noise, high load-to-weight ratio, and environmentally friendly characteristics, suitable for speeds between 140 km / h and 200 km / h.

[0037] In addition, this embodiment also installs a temperature and vibration composite sensor on the axle box of the wheelset. Previously, high-speed train bogies only had axle box temperature sensors. However, this time, through the upgrade of the sensor, a temperature and vibration composite sensor is used. Based on the temperature change that occurs when abnormal bearing rolling is detected in the axle box, the judgment logic is used to determine the safety of the running vehicle. This not only makes up for the blind spot of using temperature changes to judge bearing abnormalities, but also judges the comfort of the vehicle based on vibration data, ensuring the safe and reliable operation of the vehicle.

[0038] A lateral displacement sensor was added to the lateral instability sensor at one end of the frame. The lateral instability sensor detects the magnitude of lateral acceleration to determine if lateral instability is present, affecting vehicle stability. The lateral displacement sensor detects whether the displacement at the end of the frame exceeds the limits, especially when navigating curves, to check for collisions or interference between the relative rotation of the vehicle body and the bogie. It can also determine whether the performance parameters of the vehicle's secondary suspension system meet the vehicle's clearance requirements.

[0039] In addition, a lateral stop is installed between the central traction device and the bogie frame to restrict lateral movement and prevent the vehicle from exceeding the clearance limits. The lateral stop is composed of elastic rubber components, with the clearance consisting of both free clearance and elastic clearance. Its main function is during curve operation; if a collision occurs while traversing a curve, the lateral stop undergoes elastic compression deformation, reducing the elastic clearance. The stress load and elastic clearance displacement curves during this change are shown in the diagram. If lateral movement occurs during vehicle operation—that is, lateral displacement of the car body relative to the bogie—and the lateral free clearance is insufficient, the central traction device will compress the lateral stop on the bogie frame, continuously consuming the lateral elastic clearance. However, when the lateral stress load reaches a certain value, the elastic clearance will be exhausted, eventually approaching rigid contact, ensuring safe vehicle operation and preventing lateral movement beyond the clearance limits. To promptly assess and respond to appropriate measures, such as timely speed reduction, and ensure lateral stability and comfort, stress sensors are installed on the lateral stops at the bogie ends of the frame. Openings are provided on the lateral stop supports of the frame for sensor mounting and wiring, enabling the detection of stress during lateral elastic compression. This allows the driver to make timely judgments and ensure passenger comfort.

[0040] Based on the above technical solution, this embodiment also provides a sand spreading device 3 on the bogie, specifically at the end of the side beam 1.

[0041] like Figures 8 to 13 As shown, the sand-spreading device 3 includes: an auxiliary seat 31, a connecting plate 32, a sand-spreading seat plate 33, and a sand-spreading seat 34. The top of the auxiliary seat 31 is connected to the end of the side beam 1. The auxiliary seat 31 extends downwards, and the connecting plate 32 is provided at the bottom of the auxiliary seat 31.

[0042] The connecting plate 32 is provided with a first elongated hole 41 extending along a first direction, and the first elongated hole 41 is a through hole. The connecting plate 32 can be pre-welded to the auxiliary seat 31 to form an integral structure.

[0043] One end of the sand-spreading base plate 33 is provided with a second elongated hole 42 extending in a second direction, which is perpendicular to the first direction. The sand-spreading base plate 33 is connected to the auxiliary base 31 by a first bolt 51 that can pass through the first elongated hole 41 and the second elongated hole 42 in sequence. The other end of the sand-spreading base plate 33 is provided with a bolt hole and is also connected to the sand-spreading base 34 by bolts.

[0044] During assembly, the sand-spreading base plate 33 is first placed on the connecting plate 32, and the second elongated hole 42 is aligned with the first elongated hole 41, so that there is an overlapping area between them. Then, the first bolt 51 is passed through the first elongated hole 41 on the connecting plate 32 and the second elongated hole 42 on the sand-spreading base plate 33 in sequence, and then tightened with the first nut 52 to complete the assembly of the sand-spreading base plate 33 and the connecting plate 32.

[0045] If, after the vehicle has been running for a period of time, it is found that the sand-spreading device has become misaligned and cannot be aligned with the rail surface, the first nut 52 is loosened, and then the sand-spreading base plate 33 is moved along the direction of the first elongated hole 41 to adjust its position. The sand-spreading base plate 33 can also be moved up and down to adjust the position of the first bolt 51 in the second elongated hole 42. After adjustment, the second nut 52 is tightened, thus adjusting the position of the sand-spreading device 3. This allows the sand-spreading device to be re-aligned with the rail surface for accurate sand spreading, improving driving safety and reducing wheel and rail wear. Furthermore, it eliminates the need for frequent replacement of the sand-spreading device, reducing operating costs.

[0046] Furthermore, the sand spreading device provided in this embodiment can adapt to different bogie models. After the vehicle is unloaded or during operation, the position of the sand spreading device can be adjusted according to the vehicle's load and other working conditions, which can improve the adaptability of the sand spreading device. It is no longer necessary to design a separate sand spreading device for different bogies, thereby significantly reducing production costs.

[0047] Furthermore, the sand-spreading base can be implemented using structures commonly used in the field, and this embodiment is not limited thereto. The interface on the sand-spreading base plate 33 provided in this embodiment can be designed based on existing sand-spreading bases.

[0048] After the aforementioned sand-spreading device is installed on the bogie, the first elongated hole 41 extends longitudinally (i.e., in the direction of vehicle length), and the second elongated hole 42 extends vertically. One embodiment involves having one first elongated hole 41 and two second elongated holes 42. The two second elongated holes 42 are arranged side-by-side, with the distance between them less than the length of the first elongated hole 41, so that the sand-spreading base plate 33 can move along the direction of the first elongated hole 41, allowing both second elongated holes 42 to overlap.

[0049] Two first bolts 51 are used, each inserted into one of the two second elongated holes 42 for connection. Furthermore, a back plate 35 is used, located on the side of the connecting plate 32 opposite to the sand-spreading base plate 33. The back plate 35 has bolt holes, which correspond to the second elongated holes 42.

[0050] An anti-loosening seat 36 is also used, which is set on the side of the sand-spreading seat plate 33 opposite to the connecting plate 32. The anti-loosening seat 36 is provided with connecting holes for the first bolt 51 to pass through. Specifically, the anti-loosening seat 36 has two connecting holes, which are set corresponding to the second elongated hole 42.

[0051] Specifically, the first bolt 51 first passes through the bolt hole of the back plate 35, then through the first elongated hole 41 on the connecting plate 32, then through the second elongated hole 42 of the sand spreading base plate 33, and then through the connecting hole on the anti-loosening seat 36, and is tightened with the threaded engagement of the first nut 52 to complete the connection between the sand spreading base plate 33 and the auxiliary seat 31.

[0052] Furthermore, a boss 361 is provided on the surface of the anti-loosening seat 36 away from the sand-spreading seat plate 33. The side of the boss 361 is flat and is used to fit against the outer side of the first nut 52 to prevent the first nut 52 from rotating.

[0053] Based on the above scheme, the boss 361 is disposed between the two connecting holes. The boss 361 has two sides, both of which are flat and respectively fit with the two first nuts 52, which can play a role in preventing the two second nuts 52 from loosening.

[0054] The anti-loosening seat 36 increases the contact area between the bolt and nut when tightening the bolt, ensuring friction while preventing loosening caused by vibration and impact. This structure is simple and reliable, preventing both bolts from loosening.

[0055] Based on the above technical solution, the auxiliary seat 31 adopts a box-shaped structure welded from steel plates, including a first extension section 311 and a second extension section 312. The first extension section 311 has a first mounting surface at its end, which is bolted to the end face of the side beam 1. The second extension section 312 connects to the bottom of the first extension section 311, extends along the vehicle width direction, and a connecting plate 32 is disposed on the end face of the second extension section 312, perpendicular to the vehicle width direction.

[0056] The other end of the sand-spreading base plate 33 is also provided with four mounting holes 43 for connecting to the sand-spreading base 34 by bolts.

[0057] Based on the above technical solutions, this embodiment also provides a rail vehicle that uses the bogie provided in any of the above-described contents. The rail vehicle provided in this embodiment has the same technical effects as the bogies described above.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0062] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A bogie, characterized in that, include: Frame, air springs, vertical dampers, anti-roll torsion bars; The air spring includes: an air spring body and an air spring cover; the bottom end of the air spring body is mounted on the frame; the air spring body has an air spring chamber inside; and the air spring cover is placed on the top of the air spring body. The air spring cover includes: an air spring top plate and an air spring side plate; the air spring side plate is vertically disposed on the lower surface of the air spring top plate and forms a ring, the air spring side plate and the air spring top plate form an auxiliary air chamber, and the auxiliary air chamber is connected to the air spring chamber; The air spring cover is equipped with a vertical damper interface and an anti-roll torsion bar interface; the bottom end of the vertical damper is connected to the frame, and the top end is connected to the vertical damper interface of the air spring cover; the middle part of the anti-roll torsion bar is connected to the frame, and the end is connected to the anti-roll torsion bar interface of the air spring cover.

2. The bogie according to claim 1, characterized in that, Also includes: The anti-hunting mounting bracket is installed on the outer side of the air spring; the top of the anti-hunting mounting bracket is used to connect to the vehicle body, and the bottom is connected to the anti-hunting shock absorber.

3. The bogie according to claim 2, characterized in that, Anti-hunting mounting brackets include: The top longitudinal beam extends longitudinally; the top of the top longitudinal beam is connected to the vehicle body. The transition beam has a top end that matches the length of the top longitudinal beam; the bottom end of the transition beam forms an anti-hunting connection, which is located below the second end of the top longitudinal beam, and the length of the anti-hunting connection is less than half the length of the top longitudinal beam; the anti-hunting damper extends longitudinally and connects to the anti-hunting connection.

4. The bogie according to claim 3, characterized in that, At least two weight-reducing holes are made on the transition beam.

5. The bogie according to claim 1, characterized in that, The additional air chamber of the air spring cover is provided with a support rib; the support rib extends radially along the air spring cover, and the two ends of the support rib are connected to the side plate of the air spring.

6. The bogie according to claim 5, characterized in that, There are three supporting bars, and the included angle between two adjacent supporting bars is 60°.

7. The bogie according to claim 5, characterized in that, The top of the support rib extends to connect with the top plate of the air spring, and the bottom of the support rib extends to be flush with the bottom of the side plate of the air spring.

8. The bogie according to claim 7, characterized in that, The supporting ribs have through holes that extend along the thickness direction.

9. The bogie according to claim 8, characterized in that, The supporting ribs are also equipped with reinforcing ribs, and through holes are provided on both sides of the reinforcing ribs.

10. A rail vehicle, characterized in that, include: The bogie as described in any one of claims 1-9.

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