Vibration damping device and rail transit bogie

Abstract

A vibration damping device (3) and a rail transit bogie (100). The vibration damping device (3) comprises a bottom plate (31), a top plate (32) disposed above the bottom plate (31) and spaced from the bottom plate (31), a damping spring (33) disposed between the bottom plate (31) and the top plate (32), limiting plates (34) extending upward from the bottom plate (31), guide plates (35) extending downward from the top plate (32), and protective pads (36). Each guide plate (35) is provided with a radially protruding guide post (351), each limiting plate (34) is provided with a vertically extending limiting slot (341), the limiting slot (341) is used for a corresponding guide post (351) to insert and move in the vertical direction, and each protective pad (36) is radially disposed between a corresponding limiting plate (34) and a corresponding guide plate (35) to separate the limiting plate (34) and the guide plate (35). According to the rail transit bogie (100) and the vibration damping device (3), by providing the guide plates (35) and the limiting plates (34), the vibration damping device (3) can be prevented from displacement during operation, and by providing the protective pads (36), wear can be reduced.

Description

Vibration reduction device and rail transit bogie

[0001] This application is based on the Chinese patent application with application number 202323089289.2 and application date of November 13, 2023, and claims the priority of the Chinese patent application. The entire content of the above patent application is hereby introduced into this application as a reference. Technical Field

[0002] The present application relates to a vibration damping device and a rail transit bogie. Background Art

[0003] The bogie is one of the most important components in the structure of rail vehicles, and its main functions are as follows: the bogie is used on the vehicle to increase the vehicle's load, length and volume, and improve the train's running speed to meet the needs of the development of railway transportation. It ensures that under normal operating conditions, the car body can be reliably located on the bogie, and the bearing device converts the rolling of the wheels along the rails into the translational motion of the car body along the line. It supports the car body, bears and transmits various loads and forces from the car body to the wheels or from the wheel rail to the car body, and evenly distributes the axle weight. The structure of the bogie should facilitate the installation of the spring vibration reduction device so that it has good vibration reduction characteristics, so as to alleviate the interaction between the vehicle and the line, reduce vibration and impact, reduce dynamic stress, and improve the smoothness and safety of vehicle operation.

[0004] The rail transit train bogie disclosed in publication number CN206465941U improves the anti-diameter rigidity of the bogie by adding an X-rod device. However, this rail transit train bogie has the following disadvantages: when the vehicle vibrates, the bogie's vibration damping structure, which uses a single spring for vibration damping, will experience vibration damping displacement, making it unable to quickly return to its original position and prone to friction damage.

[0005] In view of this, it is necessary to improve the existing device to solve the above problems.

[0006] The reference to any prior art in the specification is not an acknowledgement or suggestion that the prior art forms part of the common general knowledge in any jurisdiction, or that it could reasonably be expected that the person skilled in the art would understand, consider relevant and / or combine with other prior art.

[0007] Application Contents

[0008] The purpose of the present application is to provide a vibration damping device to solve the problem that the vibration damping structure of the existing bogie is prone to vibration damping displacement and friction damage.

[0009] In order to achieve one of the above-mentioned application purposes, the present application provides a vibration damping device, which includes a bottom plate, a top plate arranged above the bottom plate and spaced apart from the bottom plate, a vibration damping spring arranged between the bottom plate and the top plate, a limit plate extending upward from the bottom plate, a guide plate extending downward from the top plate, and a protective pad, wherein the guide plate is provided with a guide column protruding in the radial direction, the limit plate is provided with a limit groove extending in the vertical direction, the limit groove is used for the guide column to be inserted and moved in the vertical direction, and the protective pad is radially arranged between the limit plate and the guide plate to separate the limit plate and the guide plate.

[0010] As a further improvement of the embodiment of the present application, the protection pad is fixed on the limiting plate, and a clearance groove extending in the vertical direction is provided on the protection pad, and the clearance groove is used for the guide column to pass through.

[0011] As a further improvement to the implementation manner of the present application, the number of the guide plates and the number of the limit plates are both two, and the two guide plates are arranged at intervals, and the two limit plates are arranged at intervals.

[0012] As a further improvement of the embodiment of the present application, the guide plate and the limit plate are in the shape of arc plates, and the damping spring is arranged between the guide plate and the limit plate on both sides and fixed on the bottom plate.

[0013] The present application also provides a rail transit bogie, which includes a bogie body, a connecting plate located above the bogie body, and a vibration damping device as described above, wherein the bottom plate is fixed on the bogie body, and the top plate is fixed on the connecting plate.

[0014] As a further improvement of the implementation mode of the present application, fixing blocks are provided on both sides of the top plate protruding outward, and fixing holes are provided on the fixing blocks. The rail transit bogie also includes fixing bolts, which pass through the fixing holes to fix the top plate to the connecting plate.

[0015] As a further improvement of the embodiment of the present application, the rail transit bogie further includes a buffer pad, which is arranged between the top plate and the connecting plate.

[0016] As a further improvement to the embodiment of the present application, the number of the bogie bodies and the number of the vibration damping devices are both two, and the connecting plate is fixedly connected to the two vibration damping devices.

[0017] As a further improvement of the embodiment of the present application, the rail transit bogie further includes a fixing member arranged on the connecting plate.

[0018] As a further improvement of the implementation mode of the present application, the fixing part includes a frame fixed on the connecting plate, a connecting rod, a limiting rod, and a connecting bolt. The frame has a first connecting port opened in the vertical direction and a second connecting port opened in the horizontal direction. The connecting rod is inserted into the frame from the first connecting port. The connecting rod is provided with a clearance hole for the limiting rod to pass through. The limiting rod passes through the second connecting port and the clearance hole, and the connecting bolt fixes the limiting rod and the frame.

[0019] Compared with the prior art, the present invention has the following advantages: the rail transit bogie and vibration damping device of the present invention, by providing guide plates and limit plates, can prevent displacement of the vibration damping device during operation, and by providing protective pads, can reduce wear. The provision of fixings makes the installation and disassembly of the rail transit bogie easier, facilitating disassembly and maintenance.

[0020] As used herein, the term "comprise" and variations of the term, such as "comprises," "comprised," "comprising," "including," and "containing" do not exclude other features, components, elements, or steps unless the context clearly requires otherwise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of a rail transit bogie of the present application;

[0022] FIG2 is a schematic diagram of the exploded structure of the rail transit bogie of the present application;

[0023] FIG3 is a schematic structural diagram of a fixing member of a rail transit bogie of the present application;

[0024] FIG4 is a schematic diagram of the exploded structure of the vibration reduction device of the present application;

[0025] FIG5 is an enlarged structural schematic diagram of area A in FIG2 . DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0029] As shown in Figures 1 to 5, the rail transit bogie 100 of the present application includes a bogie body 1, a connecting plate 2 located above the bogie body 1, a vibration damping device 3, a fixing bolt 4, a buffer pad 5 arranged between the vibration damping device 3 and the connecting plate 2, and a fixing part 6 arranged on the connecting plate 2.

[0030] There are two bogie bodies 1 and two vibration damping devices 3 , and the connecting plate 2 is fixedly connected to the two vibration damping devices 3 .

[0031] As shown in FIG. 3 , the fixing member 6 includes a frame 61 fixed on the connecting plate 2 , a connecting rod 62 , a limiting rod 63 , and a connecting bolt 64 .

[0032] The frame 61 has a first connection port 611 opened in a vertical direction and a second connection port 612 opened in a horizontal direction, wherein the first connection port 611 and the second connection port 612 have overlapping portions.

[0033] In this embodiment, the first connection port 611 and the second connection port 612 are both in the shape of a quadrangular prism, and the frame 61 can be understood as two square tubes vertically crossed and fixed together.

[0034] The connecting rod 62 is inserted into the frame 61 through the first connecting port 611. The connecting rod 62 is provided with a clearance hole 621 for the limiting rod 63 to pass through. The top end of the connecting rod 62 is fixedly connected to the vehicle body and is coated with an anti-rust coating to prevent rust damage.

[0035] The limiting rod 63 passes through the second connection port 612 and the clearance hole 621, and the connecting bolt 64 securely connects the limiting rod 63 to the frame 61. The limiting rod 63 and the connecting bolt 64 secure the connecting rod 62 to the frame 61, thereby securing the vehicle body secured to the connecting rod 62 to the connecting plate 2. This facilitates the installation and securement of the rail transit bogie 100 to the train, as well as disassembly and maintenance.

[0036] As shown in Figure 4, the vibration damping device 3 includes a bottom plate 31, a top plate 32 arranged above the bottom plate 31 and spaced apart from the bottom plate 31, a vibration damping spring 33 arranged between the bottom plate 31 and the top plate 32, a limit plate 34 extending upward from the bottom plate 31, a guide plate 35 extending downward from the top plate 32, and a protective pad 36.

[0037] The bottom plate 31 is fixed on the bogie body 1 .

[0038] The top plate 32 is fixed to the connecting plate 2. In this embodiment, fixing blocks 321 are protruding outwards from both sides of the top plate 32. The fixing blocks 321 are provided with fixing holes 322. The fixing bolts 4 pass through the fixing holes 322 to fix the top plate 32 to the connecting plate 2.

[0039] The buffer pad 5 is arranged between the top plate 32 and the connecting plate 2. The buffer pad 5 protects the top plate 32 to prevent the top plate 32 from being worn and damaged.

[0040] The damping spring 33 is fixed on the base plate 31 .

[0041] The guide plate 35 is provided with a guide post 351 protruding in the radial direction, and the limiting plate 34 is provided with a limiting groove 341 extending in the vertical direction. The limiting groove 341 is used for the guide post 351 to be inserted into and move in the vertical direction.

[0042] In this embodiment, the guide plates 35 and the limit plates 34 are both arc-shaped, and the damping springs 33 are disposed between the guide plates 35 and the limit plates 34 on either side. Each of the guide plates 35 and the limit plates 34 on either side is half a cylinder. There are two guide plates 35 and two limit plates 34, each spaced apart. In this embodiment, the guide plates 35 are radially disposed between the limit plates 34 on either side.

[0043] When the connecting plate 2 is subjected to vibration, the vibration is transmitted to the vibration damping device 3, that is, the top plate 32 presses downward against the vibration damping spring 33, and the guide column 351 moves up and down in the limiting groove 341. The limiting groove 341 serves as a guide to prevent the vibration damping spring 33 and the top plate 32 from deviating.

[0044] The protection pad 36 is radially disposed between the limiting plate 34 and the guide plate 35 to separate the limiting plate 34 and the guide plate 35 .

[0045] The protection pad 36 is fixed on the limiting plate 34 and is provided with a clearance groove 361 extending in a vertical direction. The clearance groove 361 is used for the guide column 351 to pass through, thereby preventing the vibration damping device 3 from shifting during operation.

[0046] The protection pad 36 can prevent the guide plate 35 from wearing the limit plate 34 when moving up and down, thereby preventing the vibration damping device 3 from rebounding slowly during operation and preventing the vibration damping device 3 from wearing.

[0047] The rail transit bogie 100 and the vibration damping device 3 of the present application are provided with guide plates 35 and limit plates 34 to prevent displacement of the vibration damping device 3 during operation, and with protective pads 36 to reduce wear. The provision of the fixing member 6 simplifies the installation and disassembly of the rail transit bogie 100, facilitating disassembly and maintenance.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A vibration reduction device, characterized in that: The vibration reduction device includes a bottom plate, a top plate arranged above the bottom plate and spaced apart from the bottom plate, a vibration reduction spring arranged between the bottom plate and the top plate, a limit plate extending upward from the bottom plate, a guide plate extending downward from the top plate, and a protection pad, wherein the guide plate is provided with a guide column protruding in a radial direction, the limit plate is provided with a limit groove extending in a vertical direction, the limit groove is used for the guide column to be inserted and moved in a vertical direction, and the protection pad is radially arranged between the limit plate and the guide plate to separate the limit plate and the guide plate.

2. The vibration reduction device according to claim 1, characterized in that: The protection pad is fixed on the limiting plate, and a clearance groove extending in a vertical direction is provided on the protection pad, and the clearance groove is used for the guide column to pass through.

3. The vibration reduction device according to claim 1, characterized in that: The number of the guide plates and the number of the limiting plates are both two, and the two guide plates are arranged at intervals, and the two limiting plates are arranged at intervals.

4. The vibration reduction device according to claim 3, characterized in that: The guide plate and the limit plate are in an arc plate shape, and the damping spring is arranged between the guide plate and the limit plate on both sides and fixed on the bottom plate.

5. A rail transit bogie, characterized in that: The rail transit bogie includes a bogie body, a connecting plate located above the bogie body, and a vibration reduction device according to any one of claims 1 to 4, wherein the bottom plate is fixed to the bogie body, and the top plate is fixed to the connecting plate.

6. The rail transit bogie according to claim 5, characterized in that: Fixing blocks are protruding outwardly from both sides of the top plate, and fixing holes are provided on the fixing blocks. The rail transit bogie also includes fixing bolts, and the fixing bolts pass through the fixing holes to fix the top plate on the connecting plate.

7. The rail transit bogie according to claim 5, characterized in that: The rail transit bogie further includes a buffer pad, which is arranged between the top plate and the connecting plate.

8. The rail transit bogie according to claim 5, characterized in that: The number of the bogie body and the number of the vibration damping devices are both two, and the connecting plate is fixedly connected to the two vibration damping devices.

9. The rail transit bogie according to claim 5, characterized in that: The rail transit bogie also includes a fixing member arranged on the connecting plate.

10. The rail transit bogie according to claim 9, characterized in that: The fixing member includes a frame fixed on the connecting plate, a connecting rod, a limiting rod, and a connecting bolt. The frame has a first connecting port opened in the vertical direction and a second connecting port opened in the horizontal direction. The connecting rod is inserted into the frame from the first connecting port. The connecting rod is provided with a clearance hole for the limiting rod to pass through. The limiting rod passes through the second connecting port and the clearance hole. The connecting bolt fixes the limiting rod and the frame.

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