Damping system, bogie and vehicle

Abstract

The application discloses a damping system, a bogie and a vehicle, and relates to the technical field of rail vehicles, in particular to a damping system for a bogie of a rail vehicle, which comprises: a middle support frame, which is adapted to be arranged below a vehicle body of the rail vehicle and connected with the vehicle body, and is adapted to be located above an axle bridge of the bogie and movably connected with the axle bridge in the up-down direction; and a vertical damping body, which is connected with the middle support frame at an upper end, and adapted to be connected with the axle bridge at a lower end. The vertical damping body is connected between the middle support frame and the axle bridge, so that the middle support frame can only move in the up-down direction relative to the axle bridge and cannot move in the transverse direction, and the vertical damping body is ensured not to be affected by the transverse force.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a vibration reduction system, bogie, and vehicle. Background Technology

[0002] In the field of rail vehicle manufacturing, the main body of the tram currently in use consists of the car body and the bogie. When the tram encounters curves or bumpy sections during its journey, there will be relative lateral and vertical vibrations between the car body and the bogie, causing passengers to feel swayed and resulting in a poor experience.

[0003] In related technologies, vibration reduction is achieved by using vibration dampers. However, in actual operation, the vibration damper is subjected to both lateral and vertical forces, causing deformation and bending of the vibration damper. This greatly worsens the working conditions of the vibration damper and reduces its service life. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a vibration reduction system, in which an intermediate support frame is provided under the vehicle body and connected thereto, and a vertical vibration damper is connected between the intermediate support frame and the axle axle. The intermediate support frame can only move vertically relative to the axle axle, but cannot move laterally, so that the vertical vibration damper is not subjected to lateral forces.

[0005] The present invention further proposes a bogie.

[0006] The present invention further proposes a vehicle.

[0007] According to a first aspect of the present invention, a vibration damping system is used for a bogie of a rail vehicle. The vibration damping system includes: an intermediate support frame adapted to be disposed below and connected to the car body of the rail vehicle, the intermediate support frame being adapted to be located above the axle bridge of the bogie and vertically movably connected to the axle bridge; and a vertical damping body, the upper end of the vertical damping body being connected to the intermediate support frame, and the lower end of the vertical damping body being adapted to be connected to the axle bridge.

[0008] According to the vibration reduction system of the present invention, an intermediate support frame is provided below the body of the rail vehicle and connected thereto. By connecting the vertical vibration damper between the intermediate support frame and the axle bridge, the intermediate support frame can only move up and down relative to the axle bridge and cannot move laterally. This prevents the vertical vibration damper from being subjected to lateral forces, thereby avoiding bending and deformation of the vertical vibration damper due to lateral forces and effectively improving the service life of the vertical vibration damper.

[0009] According to some embodiments of the present invention, the lower end of the intermediate support frame is provided with a first guide member, and the upper end of the shaft bridge is provided with a second guide member. The first guide member and the second guide member are guided and cooperated to enable the intermediate support frame and the shaft bridge to be movably connected vertically.

[0010] According to some embodiments of the present invention, the first guide member is one of a guide groove and a guide pin, and the second guide member is the other of a guide groove and a guide pin, wherein the guide pin is disposed in the guide groove, and the guide pin and the guide groove are movably connected vertically.

[0011] According to some embodiments of the present invention, a damping body is provided on the side of the guide pin facing the guide groove, and the damping body is adapted to contact and cooperate with the bottom wall of the guide groove.

[0012] According to some embodiments of the present invention, the vertical damper includes a vertical spring, the upper end of which is connected to the intermediate support frame, and the lower end of which is adapted to be connected to the shaft bridge.

[0013] According to some embodiments of the present invention, the vertical damping body further includes a vertical damper, the upper end of which is connected to the intermediate support frame, and the lower end of which is adapted to be connected to the axle bridge.

[0014] According to some embodiments of the present invention, there are two vertical springs and two vertical dampers, with the two vertical springs symmetrically arranged at both ends of the intermediate support frame and the shaft bridge, and the two vertical dampers symmetrically arranged at both ends of the intermediate support frame and the shaft bridge.

[0015] According to some embodiments of the present invention, the vibration reduction system further includes: a car body mounting base adapted to be connected to the car body of a rail vehicle, and the intermediate support frame being movably connected to the car body mounting base.

[0016] According to some embodiments of the present invention, it further includes: a lateral vibration damper, the lateral vibration damper being arranged laterally along the rail vehicle, and the two ends of the lateral vibration damper being connected to the vehicle body mounting seat and the intermediate support frame, respectively.

[0017] According to some embodiments of the present invention, the lateral damping body includes a lateral spring, the two ends of which are respectively connected to the vehicle body mounting base and the intermediate support frame.

[0018] According to some embodiments of the present invention, there are two transverse springs, with the ends of the two transverse springs close to each other connected to the vehicle body mounting base, and the ends of the two transverse springs far apart from each other respectively connected to the intermediate support frame.

[0019] According to some embodiments of the present invention, the lateral damping body further includes a lateral damper, the two ends of which are respectively connected to the vehicle body mounting base and the intermediate support frame.

[0020] According to some embodiments of the present invention, there are two lateral dampers, which are respectively disposed at both ends of the two lateral springs. The ends of the two lateral dampers away from the lateral springs are respectively connected to both ends of the vehicle body mounting bracket. The ends of the two lateral dampers close to the lateral springs and the ends of the two lateral springs away from each other are connected together to the intermediate support frame.

[0021] According to some embodiments of the present invention, it further includes: a boom rotatably connected between the intermediate support frame and the vehicle body mounting base.

[0022] According to some embodiments of the present invention, there are two suspension rods, which are respectively disposed at both ends of the intermediate support frame, and the two ends of the suspension rods are rotatably connected to the vehicle body mounting seat and the intermediate support frame, respectively.

[0023] According to some embodiments of the present invention, the two ends of the vehicle body mounting base are provided with connecting portions, the connecting portions extending downward and inclined toward one end of the intermediate support frame, so that the hanger is suspended between the intermediate support frame and the vehicle body mounting base.

[0024] According to some embodiments of the present invention, the intermediate support frame is provided with a recessed groove facing the axle bridge side, the groove opening facing the vehicle body mounting seat, and the vehicle body mounting seat is provided with a lateral stop extending towards the recessed groove side, the lateral stop engaging within the recessed groove and limiting its movement within the recessed groove.

[0025] According to a second aspect of the present invention, a bogie includes: an axle bridge; and the vibration damping system, wherein the upper end of the vertical damper is connected to the intermediate support frame, and the lower end of the vertical damper is connected to the axle bridge.

[0026] According to a third aspect of the present invention, a rail vehicle includes: a car body; and the bogie disposed below the car body.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the connection between the vibration reduction system and the rail vehicle according to an embodiment of the present invention;

[0030] Figure 2 This is a structural schematic diagram of the vibration reduction system and its bogie according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the vibration reduction system according to an embodiment of the present invention;

[0032] Figure 4 This is a cross-sectional schematic diagram of a vibration reduction system according to an embodiment of the present invention;

[0033] Figure 5 This is a first-view structural schematic diagram of the intermediate support frame in the vibration reduction system according to an embodiment of the present invention.

[0034] Figure 6 This is a structural schematic diagram of the intermediate support frame in the vibration reduction system according to an embodiment of the present invention from a second perspective.

[0035] Figure 7 This is a top view of a vibration reduction system according to an embodiment of the present invention.

[0036] Figure label:

[0037] 1. Vehicle body mounting bracket; 11. Mounting bracket body; 12. Connecting part; 13. Lateral stop part;

[0038] 2. Intermediate support frame; 21. First mounting base; 22. Second mounting base; 23. Third mounting base; 24. Notch; 25. First guide component; 26. Vibration damper; 27. Reinforcing rib;

[0039] 31. Lateral spring; 32. Lateral damper; 33. Third hinge;

[0040] 41. Vertical spring; 42. Vertical damper; 43. First hinge;

[0041] 5. Hanging rod; 51. Second hinge component;

[0042] 200. Bogie; 210. Axle bridge; 211. Second guide component; 220. Running wheel; 230. Guide frame; 240. Guide wheel; 250. Steering knuckle; 260. Steering tie rod; 300. Car body; 400. Track beam. Detailed Implementation

[0043] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0044] The following is for reference. Figures 1-7A vibration damping system according to embodiments of the present invention is described for a bogie of a rail vehicle. Furthermore, the present invention also proposes a bogie and a vehicle having the same.

[0045] like Figures 1-3 As shown, the vibration reduction system includes: intermediate support frame 2 and vertical vibration damper.

[0046] The intermediate support frame 2 is adapted to be located below the body 300 of the rail vehicle and connected to the body 300. Specifically, an intermediate support frame 2 is provided below the body 300 and connected to it. When the rail vehicle shakes, the intermediate support frame 2 shakes along with the body 300.

[0047] Furthermore, the intermediate support frame 2 is adapted to be located above the axle bridge 210 of the bogie and is vertically movably connected to the axle bridge 210. Generally, during the operation of the rail vehicle, the intermediate support frame 2 will undergo vertical displacement relative to the axle bridge 210.

[0048] Furthermore, the upper end of the vertical damper is connected to the intermediate support frame 2, and the lower end of the vertical damper is adapted to be connected to the axle bridge 210. In other words, the intermediate support frame 2 is connected to the axle bridge 210 vertically via the vertical damper. When the intermediate support frame 2 moves vertically along with the vehicle body 300, the intermediate support frame 2 can only move vertically relative to the axle bridge 210, and cannot move laterally. This prevents the vertical damper from being subjected to lateral forces, avoiding bending and deformation of the vertical damper due to lateral forces, and effectively improving the service life of the vertical damper.

[0049] Therefore, by connecting the vertical vibration damper between the intermediate support frame 2 and the axle bridge 210, the intermediate support frame 2 can only move up and down relative to the axle bridge 210, but cannot move laterally. This prevents the vertical vibration damper from being subjected to lateral forces, thus avoiding bending and deformation of the vertical vibration damper due to lateral forces and effectively improving the service life of the vertical vibration damper.

[0050] Furthermore, the lower end of the intermediate support frame 2 is provided with a first guide member 25, and the upper end of the axle bridge 210 is provided with a second guide member 211. The first guide member 25 and the second guide member 211 are guided and cooperated so that the intermediate support frame 3 and the axle bridge 210 can be connected vertically.

[0051] In other words, the first guide member 25 at the lower end of the intermediate support frame 2 and the second guide member 211 at the upper end of the axle bridge 210 are guided and cooperated. Under the guidance and cooperation of the first guide member 25 and the second guide member 211 in the vertical direction, it is further ensured that the intermediate support frame 2 can only move up and down relative to the axle bridge 210 and will not move in the lateral direction, so that the vertical damping body is not subjected to lateral force and the service life of the vertical damping body is improved.

[0052] In some embodiments, the first guide member 25 is one of a guide groove and a guide pin, and the second guide member 211 is the other of a guide groove and a guide pin. The guide pin is disposed in the guide groove, and the guide pin and the guide groove are movably connected vertically. Specifically, the guide pin engages in the guide groove. When the intermediate support frame 3 moves vertically relative to the shaft bridge 210, the guide pin engages with the guide groove within the guide groove, thereby enabling the guide pin and the guide groove to move vertically, and thus enabling the intermediate support frame 3 and the shaft bridge 210 to move vertically.

[0053] In an embodiment of the present invention, the first guide member 25 at the lower end of the intermediate support frame 2 is a guide pin, and the second guide member 211 at the upper end of the shaft bridge 210 is a guide groove. The guide pin is located in the guide groove, so that the guide pin can always be engaged with the guide groove and guide the guide groove, thereby preventing the vertical damping body from being subjected to lateral forces.

[0054] The guide pin has a damping body 26 on the side facing the guide groove, and the damping body 26 is adapted to contact and cooperate with the bottom wall of the guide groove. In this way, the damping body 26, such as a damping pad, is provided at the end of the guide pin to play a certain role in damping vibration and to prevent wear and noise problems when the guide pin moves vertically in the guide groove.

[0055] In some embodiments, the vertical damper includes a vertical spring 41, the upper end of which is connected to the intermediate support frame 2, and the lower end of which is adapted to be connected to the axle bridge 210. The vertical spring 41 can be an air spring, which connects the intermediate support frame 2 and the axle bridge 210, and can effectively attenuate the vibration of the rail vehicle.

[0056] Furthermore, the vertical damping body also includes a vertical damper 42, the upper end of which is connected to the intermediate support frame 2, and the lower end of which is adapted to be connected to the axle bridge 210.

[0057] In other words, in addition to the vertical spring 41, a vertical vibration damper 42 is also provided between the intermediate support frame 2 and the axle bridge 210, so that the upper end of the vertical vibration damper 42 is connected to the intermediate support frame 2 and the lower end is connected to the axle bridge 210. In this way, the vibration damping effect of the rail vehicle in the vertical direction can be further improved, and the intermediate support frame 2 can only move up and down relative to the axle bridge 210, but cannot move laterally, so that the vertical spring 41 and the vertical vibration damper 42 are not subjected to lateral forces.

[0058] Furthermore, there are two vertical springs 41 and two vertical dampers 42. The two vertical springs 41 are symmetrically arranged at both ends of the intermediate support frame 2 and the shaft bridge 210, and the two vertical dampers 42 are symmetrically arranged at both ends of the intermediate support frame 2 and the shaft bridge 210. Thus, referring to... Figure 3As shown, two vertical springs 41 are symmetrically arranged at both ends of the intermediate support frame 2 and the axle bridge 210, and two vertical dampers 42 are symmetrically arranged at both ends of the intermediate support frame 2 and the axle bridge 210. The vertical springs 41 and vertical dampers 42 located at the same end of the intermediate support frame 2 and the axle bridge 210 are spaced apart, which can better attenuate the vibration from the rail vehicle and improve the running stability and smoothness of the rail vehicle.

[0059] Specifically, the intermediate support frame 2 is provided with a second mounting seat 22 and a third mounting seat 23, which are spaced apart. The upper end of the vertical spring 41 is installed and connected to the second mounting seat 22, and the upper end of the vertical damper 42 is installed and connected to the third mounting seat 23.

[0060] Furthermore, the vertical damper 42 is provided with first hinge members 43 at both ends. The central axis of the first hinge member 43 is perpendicular to both the transverse and vertical directions, that is, parallel to the longitudinal direction. The vertical damper 42 is hinged to the intermediate support frame 2 through the first hinge member 43. The first hinge member 43 can be a ball joint.

[0061] In an embodiment of the present invention, the second mounting base 22 and the third mounting base 23 are spaced apart in the longitudinal direction, and the second mounting base 22 and the third mounting base 23 are provided at both ends of the intermediate support frame 2, so that the vertical spring 41 and the vertical damper 42 are installed at both ends of the intermediate support frame 2 to connect the intermediate support frame 2 and the axle bridge 210.

[0062] Combination Figures 1-4 As shown, the vibration reduction system also includes: a car body mounting seat 1, which is adapted to be connected to the car body 300 of the rail vehicle, and an intermediate support frame 2 is movably connected to the car body mounting seat 1.

[0063] In other words, the rail vehicle body 300 and the intermediate support frame 2 are connected via a body mounting seat 1. The body mounting seat 1 is connected to the rail vehicle body 300, and the body mounting seat 1 is movably connected to the intermediate support frame 2. When the rail vehicle shakes, the intermediate support frame 2 shakes along with the body mounting seat 1 and the rail vehicle body 300. Furthermore, since the intermediate support frame 2 is equipped with vertical vibration dampers, and is connected between the rail vehicle body 300 and the intermediate support frame 2 via the body mounting seat, the service life of the intermediate support frame 2 can be further improved.

[0064] Furthermore, the vibration reduction system also includes: a lateral vibration damper, which is arranged along the lateral direction of the rail vehicle, with its two ends connected to the car body mounting base 1 and the intermediate support frame 2, respectively. Specifically, the vertical vibration damper is arranged along the vertical direction of the rail vehicle, and the lateral vibration damper is arranged along the lateral direction of the rail vehicle, with the two arranged perpendicular to each other.

[0065] Furthermore, the two ends of the transverse damper are connected to the car body mounting seat 1 and the intermediate support frame 2 respectively. When the rail vehicle shakes, the transverse damper connected between the intermediate support frame 2 and the car body mounting seat 1 can attenuate the vibration in the transverse direction.

[0066] In some embodiments, the lateral damping body includes a lateral spring 31, the two ends of which are connected to the vehicle body mounting seat 1 and the intermediate support frame 2, respectively.

[0067] Furthermore, there are two transverse springs 31. The ends of the two transverse springs 31 that are close to each other are connected to the vehicle body mounting seat 1, and the ends of the two transverse springs 31 that are far apart from each other are connected to the intermediate support frame 2 respectively.

[0068] In embodiments of the present invention, such as Figure 4 As shown, the ends of the two transverse springs 31 that are close to each other can be connected to the vehicle body mounting base 1, and the ends of the two transverse springs 31 that are far apart from each other are respectively connected to the intermediate support frame 2.

[0069] The intermediate support frame 2 is provided with a first mounting seat 21, and the two ends of the transverse spring 31 are connected to the first mounting seat 21 and the vehicle body mounting seat 1, respectively.

[0070] In addition, the lateral damping system also includes a lateral damper 32, the two ends of which are connected to the vehicle body mounting base 1 and the intermediate support frame 2, respectively. This further enhances the damping and cushioning effect in the lateral direction.

[0071] Furthermore, there are two lateral dampers 32, which are respectively installed at both ends of the two lateral springs 31. The ends of the two lateral dampers 32 away from the lateral springs 31 are respectively connected to both ends of the vehicle body mounting seat 1. The ends of the two lateral dampers 32 close to the lateral springs 31 and the ends of the two lateral springs 31 away from each other are connected together to the intermediate support frame 2.

[0072] refer to Figure 3 and Figure 4 As shown, two lateral dampers 32 are respectively disposed at both ends of two lateral springs 31. The ends of the two lateral springs 31 closest to each other are connected to the middle of the vehicle body mounting base 1, while the ends of the two lateral springs 31 furthest from each other are respectively connected to the first mounting base 21 on the intermediate support frame 2. Furthermore, the ends of the two lateral dampers 32 closest to the lateral springs 31 are connected to the first mounting base 21 on the intermediate support frame 2, while the ends of the two lateral dampers 32 furthest from the lateral springs 31 are respectively connected to both ends of the vehicle body mounting base 1.

[0073] When the vehicle body mounting seat 1 experiences lateral vibration, the lateral spring 32 is axially stretched and compressed between one end of the first mounting seat 21 and the vehicle body mounting seat 1, and the lateral damper 32 is extended and retracted between the other end of the first mounting seat 21 and the vehicle body mounting seat 1. The two work together to achieve effective lateral vibration reduction.

[0074] Specifically, the two ends of the lateral damper 32 are respectively provided with a third hinge 33. The central axis of the third hinge 33 is perpendicular to the lateral direction and the vertical direction. The lateral damper 32 is connected to the first mounting base 21 and the vehicle body mounting base 1 through the third hinge 33 to ensure that the lateral damper 32 only performs lateral buffering along the lateral direction.

[0075] And, reference Figure 3 and Figure 4 The body mounting seat 1 extends downward toward the middle of the middle support frame 2, so that the ends of the two transverse springs 31 that are close to each other can be connected to the middle of the body mounting seat 1.

[0076] Of course, the connection positions of the two lateral springs 31 and the two lateral dampers 32 are not limited to those described above. For example, the connection positions of the two lateral springs 31 and the two lateral dampers 32 can be interchanged, and the damping effect can still be achieved.

[0077] Combination Figures 4-6 As shown, the vibration damping system also includes a suspension rod 5, which is rotatably connected between the intermediate support frame 2 and the vehicle body mounting seat 1.

[0078] In other words, the intermediate support frame 2 and the vehicle body mounting seat 1 are movably connected by the hanger 5. The hanger 5 is rotatably connected to both the intermediate support frame 2 and the vehicle body mounting seat 1. This means that when the vehicle body mounting seat 1 moves vertically, it will pull the intermediate support frame 2 to move vertically in sync. This restricts the movement between the intermediate support frame 2 and the vehicle body mounting seat 1 to only lateral movement and prevents vertical movement. This ensures that the lateral damping body is not subjected to vertical force, thus avoiding the problem of axial deformation and bending caused by vertical force.

[0079] Furthermore, there are two booms 5, which are respectively set at both ends of the intermediate support frame 2, and the two ends of the booms 5 are rotatably connected to the vehicle body mounting seat 1 and the intermediate support frame 2 respectively.

[0080] Thus, each end of the intermediate support frame 2 is provided with a hanger 5, so that the hanger 5 is hinged to the intermediate support frame 2 and the car body mounting seat 1 respectively. In this way, on the one hand, when the car body mounting seat 1 undergoes vertical displacement, the hanger 5 pulls the intermediate support frame 2 to move vertically together, thereby greatly reducing the swaying of the rail vehicle under the damping and buffering of the vertical spring 41 and the vertical damper 42; on the other hand, the hinged connection between the hanger 5 and the intermediate support frame 2 and the car body mounting seat 1 respectively can limit the movement between the intermediate support frame 2 and the car body mounting seat 1 to only lateral movement.

[0081] Specifically, the boom 5 has second hinge members 51 at both ends. The central axis of the second hinge member 51 is perpendicular to the horizontal and vertical directions. The boom 5 is hinged to the intermediate support frame 2 and the vehicle body mounting seat 1 through the second hinge members 51. The second hinge member 51 can be a ball joint to ensure the stability of the hinged connection between the boom 5 and the intermediate support frame 2 and the vehicle body mounting seat 1.

[0082] Furthermore, the two ends of the vehicle body mounting base 1 are provided with connecting parts 12, which extend downward and are inclined toward one end of the intermediate support frame 2, so that the hanger 5 is suspended between the intermediate support frame 2 and the vehicle body mounting base 1.

[0083] Specifically, the car body mounting base 1 includes a mounting base body 11 and connecting portions 12. The mounting base body 11 has connecting portions 12 at both ends. The connecting portions 12 extend downward relative to the mounting base body 11 and extend obliquely towards the intermediate support frame 2, so that the suspension rod 5 is suspended between the intermediate support frame 2 and the connecting portions 12. Thus, the mounting base body 11 is suitable for connection to the car body of the rail vehicle, and the suspension rod 5 is suspended between the intermediate support frame 2 and the connecting portions 12. This reduces space requirements and restricts lateral movement between the intermediate support frame 2 and the car body mounting base 1 to only occur laterally.

[0084] Based on the structural design of the boom 5 described above, on the one hand, when the car body mounting seat 1 undergoes vertical displacement, the boom 5 pulls the intermediate support frame 2 to move vertically together, and at the same time, the lateral damping body moves vertically along with the intermediate support frame 2. In this way, the lateral damping body only undergoes axial deformation and is not subjected to vertical force, which greatly optimizes the load conditions and helps to improve its service life. On the other hand, when the car body mounting seat 1 undergoes lateral displacement, lateral movement occurs between the intermediate support frame 2 and the car body mounting seat 1, and the lateral swaying of the rail vehicle is greatly reduced under the damping and buffering effect of the lateral damping body.

[0085] like Figures 1-4As shown, the intermediate support frame 2 is provided with a recessed groove 24 facing the side of the axle bridge 210. The opening of the groove 24 faces the vehicle body mounting seat 1. The vehicle body mounting seat 1 is provided with a transverse stop 13 extending towards the side of the groove 24. The transverse stop 13 is fitted into the groove 24 and moves within the groove 24.

[0086] With this configuration, a notch 24 is provided on the intermediate support frame 2, with the notch facing the side of the vehicle body mounting seat 1, making the intermediate support frame 2 have an inverted "V" structure. Correspondingly, a transverse stop 13 is provided on the side of the vehicle body mounting seat 1 facing the notch 24, so that the transverse stop 13 fits in the notch 24. When the vehicle body 300 generates transverse vibration, the transverse stop 13 moves within the notch 24 to limit the movement, which plays a certain transverse limiting role, and can also prevent excessive stretching and compression.

[0087] Since the intermediate support frame 2 has an inverted "V" shape, reinforcing ribs 27 are provided at the bending parts of the intermediate support frame 2 to ensure that the bending parts are not prone to breakage and to improve the structural strength of the intermediate support frame 2.

[0088] According to a second aspect of the present invention, a bogie 200 includes: an axle bridge 210 and a vibration damping system.

[0089] The upper end of the vertical vibration damper is connected to the intermediate support frame 2, and the lower end of the vertical vibration damper is connected to the axle bridge 210. When the rail vehicle generates vertical displacement, the vertical spring 4 is stretched and compressed between the intermediate support frame 2 and the axle bridge 210, thereby achieving the function of vertical vibration damping and buffering. Furthermore, the intermediate support frame 2 can only move up and down relative to the axle bridge 210, but cannot move laterally, so that the vertical vibration damper will not be subjected to lateral force. This avoids bending and deformation of the vertical vibration damper due to lateral force, effectively improving the service life of the vertical vibration damper.

[0090] According to a third aspect of the present invention, a rail vehicle includes a car body 300 and a bogie 200, wherein the bogie 200 is disposed below the car body 300.

[0091] Specifically, in combination Figures 1-3 As shown, in the bogie 200, the running wheels 220 are rotatably connected to the axle bridge 210 via steering knuckles 250, and the guide frame 230 is rotatably connected to the axle bridge 210 via a slewing support. Both the running wheels 220 and the guide wheels 240 are rubber tires, and the running wheels 220 are mounted on the axle bridge 210 via steering knuckles 250. Steering tie rods 260 are connected to the steering knuckles 250, and the left and right steering knuckles 250 are connected via steering tie rods 260 and can rotate relative to each other. Guide wheels 240 are connected to the guide frame 230; the guide wheels 240 drive the guide frame 230 to deflect, which in turn drives the running wheels 220 to deflect, thus achieving vehicle steering.

[0092] Therefore, a vibration decoupling mechanism was added between the vehicle body mounting base 1 and the axle bridge 210, mainly composed of an intermediate support frame 2, a vertical damper, and a lateral damper. By connecting the vertical damper between the intermediate support frame 2 and the axle bridge 210, the intermediate support frame 2 and the axle bridge 210 can be connected vertically, ensuring that the intermediate support frame 2 can only move vertically relative to the axle bridge 210, and cannot move laterally, thus preventing the vertical damper from being subjected to lateral forces. Furthermore, the guiding cooperation of the first guide member 25 and the second guide member 211 further ensures that the vertical damper only undergoes axial deformation and is not subjected to lateral forces. Additionally, the hanger 5 is rotatably connected between the vehicle body mounting base 1 and the intermediate support frame 2, allowing only lateral movement between the two, thus ensuring that the lateral damper only undergoes axial deformation and is not subjected to vertical forces. In summary, the vibration reduction system of this invention significantly optimizes the load conditions of the lateral and vertical vibration dampers, which is beneficial to improving their service life. Compared with the prior art, this invention, through a vibration decoupling mechanism, not only achieves vibration reduction and buffering effects in both the vertical and lateral directions, but also decouples and prevents the vertical and lateral vibrations from affecting each other during vehicle movement. That is, the vertical vibration damper is not subjected to lateral force, and the lateral vibration damper is not subjected to vertical force, thus improving the vehicle's vertical comfort and stability, and effectively solving the problems of low spring life and poor stability in existing vehicles.

[0093] In the description of this invention, 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," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0094] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0095] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vibration damping system for a bogie of a rail vehicle, characterized in that, The vibration reduction system includes: An intermediate support frame is adapted to be disposed below the body of the rail vehicle and connected to the body, and the intermediate support frame is adapted to be located above the axle bridge of the bogie and connected to the axle bridge in a way that allows it to move up and down. A vertical vibration damper, the upper end of which is connected to the intermediate support frame, and the lower end of which is adapted to be connected to the shaft bridge; A car body mounting base, the car body mounting base being adapted to be connected to the car body of a rail vehicle, and the intermediate support frame being movably connected to the car body mounting base; A transverse vibration damper is provided, which is arranged transversely along the rail vehicle, and its two ends are respectively connected to the vehicle body mounting base and the intermediate support frame; A boom is rotatably connected between the intermediate support frame and the vehicle body mounting seat to restrict the intermediate support frame and the vehicle body mounting seat to only allow lateral movement and not vertical movement, so as to ensure that the lateral damping body is not subjected to vertical force. The intermediate support frame is provided with a first guide at its lower end and a second guide at its upper end. The first guide and the second guide cooperate to ensure that the intermediate support frame can only move up and down relative to the axle bridge and cannot move laterally.

2. The vibration reduction system according to claim 1, characterized in that, The first guide member is one of a guide groove and a guide pin, and the second guide member is the other of a guide groove and a guide pin. The guide pin is disposed in the guide groove, and the guide pin and the guide groove are connected vertically.

3. The vibration reduction system according to claim 2, characterized in that, The guide pin has a damping body on the side facing the guide groove, and the damping body is adapted to contact and cooperate with the bottom wall of the guide groove.

4. The vibration reduction system according to claim 1, characterized in that, The vertical damping body includes a vertical spring, the upper end of which is connected to the intermediate support frame, and the lower end of which is adapted to be connected to the shaft bridge.

5. The vibration reduction system according to claim 4, characterized in that, The vertical damping body also includes a vertical damper, the upper end of which is connected to the intermediate support frame, and the lower end of which is adapted to be connected to the axle bridge.

6. The vibration reduction system according to claim 5, characterized in that, There are two vertical springs and two vertical dampers. The two vertical springs are symmetrically arranged at both ends of the intermediate support frame and the shaft bridge. The two vertical dampers are symmetrically arranged at both ends of the intermediate support frame and the shaft bridge.

7. The vibration reduction system according to claim 1, characterized in that, The lateral damping body includes a lateral spring, the two ends of which are connected to the vehicle body mounting base and the intermediate support frame, respectively.

8. The vibration reduction system according to claim 7, characterized in that, There are two transverse springs. The ends of the two transverse springs that are close to each other are connected to the vehicle body mounting bracket, and the ends of the two transverse springs that are far apart from each other are respectively connected to the intermediate support frame.

9. The vibration reduction system according to claim 8, characterized in that, The lateral damping body also includes a lateral damper, the two ends of which are connected to the vehicle body mounting base and the intermediate support frame, respectively.

10. The vibration reduction system according to claim 9, characterized in that, The number of lateral dampers is two. The two lateral dampers are respectively disposed at both ends of the two lateral springs. The ends of the two lateral dampers away from the lateral springs are respectively connected to both ends of the vehicle body mounting bracket. The ends of the two lateral dampers close to the lateral springs and the ends of the two lateral springs away from each other are connected together to the intermediate support frame.

11. The vibration reduction system according to claim 10, characterized in that, The number of the two hangers is two, and the two hangers are respectively set at both ends of the intermediate support frame. The two ends of the hangers are rotatably connected to the vehicle body mounting seat and the intermediate support frame, respectively.

12. The vibration reduction system according to claim 10, characterized in that, The vehicle body mounting base has connecting parts at both ends, the connecting parts extend downward and are inclined toward one end of the intermediate support frame, and the hanger is suspended between the intermediate support frame and the vehicle body mounting base.

13. The vibration reduction system according to claim 1, characterized in that, The intermediate support frame is provided with a recessed groove facing the axle bridge side, the groove opening facing the vehicle body mounting seat, and the vehicle body mounting seat is provided with a lateral stop extending towards the recessed groove side, the lateral stop engaging within the recessed groove and limiting its movement within the recessed groove.

14. A bogie, characterized in that, include: Axle bridge; Furthermore, in any one of claims 1-13, the upper end of the vertical damping body is connected to the intermediate support frame, and the lower end of the vertical damping body is connected to the axle bridge.

15. A rail vehicle, characterized in that, include: Vehicle body; And the bogie of claim 14, wherein the bogie is disposed below the vehicle body.

Images