Rail transit transport vehicle and transverse damping device thereof
The lateral vibration damping device, composed of airbags and gas delivery components, solves the vibration reduction problem of rail transit vehicles in different environments, achieving stable vibration reduction effect and improved ride comfort.
Patent Information
- Application Number
- CN202520348058.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The existing suspension frame structure of rail transit vehicles uses rubber springs to achieve passive lateral vibration reduction, which has a narrow response frequency band and cannot meet the vibration reduction requirements of different operating environments.
The transverse vibration damping device, composed of an airbag and a gas delivery component, utilizes the design of the first and second vibration damping chambers of the airbag, combined with a throttle orifice and a one-way valve, to achieve air pressure regulation and the coordination of an emergency spring, adapting to the vibration damping requirements of different operating environments.
It achieves stable vibration reduction for rail transit vehicles in different operating environments, improving vehicle stability and ride comfort.
Smart Images
Figure CN223686569U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of rail transit vehicles, and more particularly, to a lateral damping device. In addition, the present application also relates to a rail transit vehicle comprising the lateral damping device. BACKGROUND
[0002] The carrying capacity of rail transit vehicles is generally strong, and thousands of passengers and a large amount of goods can be transported along the track, which has strong carrying capacity and is particularly suitable for long-distance transportation or crossing obstacles. In particular, compared with ordinary diesel locomotives or electric cars, high-speed maglev trains have a higher maximum speed.
[0003] The smoothness index and the ride comfort are important indicators for evaluating the operation of rail transit vehicles. At present, the suspension structure of high-speed maglev trains generally uses rubber springs for passive lateral damping. However, due to the narrow response frequency band of the rubber spring, it cannot meet the damping requirements of rail transit vehicles applied in different operating environments.
[0004] In summary, how to meet the damping requirements of rail transit vehicles applied in different operating environments is a problem that needs to be solved by the technical personnel in the field. CONTENT OF THE INVENTION
[0005] Therefore, the purpose of the present application is to provide a lateral damping device that can meet the damping requirements of rail transit vehicles in different operating environments.
[0006] Another purpose of the present application is to provide a rail transit vehicle comprising the lateral damping device.
[0007] In order to achieve the above purpose, the present application provides the following technical solutions:
[0008] A lateral damping device, comprising: an air bag and a gas conveying member;
[0009] The gas conveying member is arranged on a suspension, and the air bag is arranged on the gas conveying member and abuts against a vehicle body.
[0010] The air bag has a first damping chamber, and the gas conveying member has an inflation port that is in communication with the first damping chamber and is used to convey damping gas with a preset pressure into the first damping chamber.
[0011] Preferably, the gas conveying member has a second damping chamber and a throttle port.
[0012] The inflation port is in communication with the second damping chamber and an external environment of the gas conveying member, and is used to inflate the air bag with gas.
[0013] The throttle port is in communication with the second damping chamber and the first damping chamber.
[0014] Preferably, a one-way valve is arranged in the inflation port to prevent the gas in the second damping chamber from being discharged through the inflation port.
[0015] Preferably, an emergency spring is further arranged, the tail end of the emergency spring is arranged in the gas delivery member and located in the first damping chamber, and the head end of the emergency spring and the head end of the air bag have a damping space in the transverse direction for abutting against the vehicle body after the air bag is deformed by a preset distance in the transverse direction.
[0016] Preferably, the head end of the emergency spring is provided with a wear-resistant layer.
[0017] Preferably, the gas delivery member, the emergency spring and the air bag are coaxially extended.
[0018] Preferably, the tail end of the air bag is open and sealingly connected to the gas delivery member.
[0019] Preferably, the gas delivery member and the air bag are both frustoconical structures, and the gas delivery member is a shell structure.
[0020] Preferably, the gas delivery member has a connecting rod for being inserted into a mounting hole of the suspension frame and threadedly connected to a fastener to fix the gas delivery member to the suspension frame through the fastener.
[0021] An rail transit vehicle comprising the lateral damping device as claimed in any one of the preceding claims.
[0022] In the present application, the inner cavity of the air bag is the first damping chamber, and the left end of the air bag is fixed on the gas delivery member. An inflation port is reserved on the side wall of the gas delivery member to communicate the first damping chamber through a pipeline or a gas inlet port of the air bag, so that the first damping chamber can be filled with damping gas through the inflation port.
[0023] In use, the left end of the gas delivery member is mounted on the suspension frame, so that the right end of the air bag abuts against the vehicle body. By filling the first damping chamber with damping gas of different gas pressures, the stiffness of the air bag can be adjusted to adapt to the rail transit vehicle in different operating environments. BRIEF DESCRIPTION OF DRAWINGS
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of a specific embodiment provided in this application.
[0026] Figure label:
[0027] 1-Suspension frame; 2-Vehicle body; 3-Airbag; 31-First damping chamber; 4-Gas delivery component; 41-Second damping chamber; 42-Throttle port; 5-One-way valve; 6-Emergency spring; 7-Wear-resistant layer; 8-Connecting rod; 9-Fastener. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] The core of this application is to provide a rail transport vehicle with a lateral vibration damping device that can meet the vibration reduction requirements of rail transport vehicles in different operating environments. Another core aspect of this application is to provide a rail transport vehicle that includes the aforementioned lateral vibration damping device.
[0030] This application provides a lateral vibration damping device, including an airbag 3 and a gas delivery component 4; wherein, the gas delivery component 4 is disposed on a suspension frame 1, the airbag 3 is disposed on the gas delivery component 4, and the airbag 3 is used to abut against a vehicle body 2; the airbag 3 has a first vibration damping chamber 31, and the gas delivery component 4 has an inflation port, the inflation port being connected to the first vibration damping chamber 31, for delivering vibration damping gas at a preset pressure into the first vibration damping chamber 31.
[0031] Specifically, such as Figure 1 As shown, the inner cavity of the airbag 3 is the first vibration damping chamber 31, and the left end of the airbag 3 is fixed on the gas delivery component 4. An inflation port is reserved on the side wall of the gas delivery component 4 so as to connect the first vibration damping chamber 31 through a pipeline or by connecting to the air inlet of the airbag 3, and vibration damping gas can be injected into the first vibration damping chamber 31 through the inflation port.
[0032] In use, the left end of the gas delivery component 4 is installed on the suspension frame 1, so that the right end of the airbag 3 abuts against the vehicle body 2. By filling the first damping chamber 31 with damping gas of different pressures, the stiffness of the airbag 3 can be adjusted to adapt to rail transit vehicles in different operating environments.
[0033] Based on the above embodiment, the gas delivery component 4 has a second damping chamber 41 and a throttle port 42; the inflation port is connected to the external environment of the second damping chamber 41 and the gas delivery component 4, and is used to fill the airbag 3 with gas; the throttle port 42 is connected to the second damping chamber 41 and the first damping chamber 31.
[0034] Specifically, such as Figure 1 As shown, the gas delivery component 4 has a reserved second vibration damping chamber 41. The first vibration damping chamber 31 and the second vibration damping chamber 41 are arranged side by side. A throttling port 42 is reserved on the side wall of the gas delivery component 4 opposite to the airbag 3. The right end of the throttling port 42 extends toward the first vibration damping chamber 31 and communicates with the first vibration damping chamber 31. The left end of the throttling port 42 extends toward the second vibration damping chamber 41 and communicates with the second vibration damping chamber 41.
[0035] Furthermore, one end of the inflation port extends into the interior of the gas delivery component 4 and connects to the second damping chamber 41, while the other end extends to the outer surface of the gas delivery component 4 to connect to the external environment of the gas delivery component 4. During use, gas at a preset pressure flows sequentially through the inflation port, the second damping chamber 41, the throttle port 42, and the first damping chamber 31 to complete the process of replenishing gas to the airbag 3. The throttle port 42 can delay the local state changes of the gas environment in the first damping chamber 31, reducing the oscillations and instability during the dynamic process of replenishing gas to the airbag 3, thus ensuring the uniformity of the stiffness of the airbag 3.
[0036] It should be noted that there are no restrictions on the types of the first damping chamber 31 and the second damping chamber 41, as long as they can meet the damping requirements. For example, the first damping chamber 31 can be a square chamber or a cylindrical chamber.
[0037] Based on the above embodiment, a one-way valve 5 is provided in the inflation port to prevent the gas inside the second damping chamber 41 from being discharged through the inflation port.
[0038] Specifically, such as Figure 1 As shown, by arranging the one-way valve 5, gas can be supplied to the second damping chamber 41 from the outside to the inside, and gas can be prevented from being discharged from the second damping chamber 41 through the air inlet, thus ensuring the stability of the air pressure in the first damping chamber 31 and the second damping chamber 41.
[0039] On the basis of the above-mentioned embodiments, an emergency spring 6 is further included, the tail end of the emergency spring 6 is arranged in the gas conveying member 4 and located in the first damping chamber 31, and the head end of the emergency spring 6 and the head end of the air bag 3 have a damping space in the transverse direction, which is used for abutting against the vehicle body 2 after the air bag 3 is deformed by a preset distance in the transverse direction.
[0040] Specifically, as shown in Figure 1 the first damping chamber 31 is provided with the emergency spring 6, the emergency spring 6 extends in the transverse direction, the left end of the emergency spring 6 is fixed on the upper surface of the gas conveying member 4 by welding or clamping, etc., the right end is a free end, and a damping space is left between the emergency spring 6 and the right end of the air bag 3. In use, when the vehicle body 2 vibrates in the transverse direction, the air bag 3 is first pressed and pushed to shrink, after the air bag 3 shrinks by a distance equal to the width of the damping space in the transverse direction, the right end wall of the air bag 3 abuts against the upper surface of the emergency spring 6, and then the vibration of the vehicle body 2 will press and push the emergency spring 6 to shrink, so as to avoid excessive transverse displacement of the vehicle body 2.
[0041] On the basis of the above-mentioned embodiments, the head end of the emergency spring 6 is provided with a wear-resistant layer 7.
[0042] Specifically, as shown in Figure 1 the right end of the emergency spring 6 is fixedly connected with the wear-resistant layer 7 by adhesion or vulcanization bonding, etc., the wear-resistant layer 7 can be a rubber layer or a plastic layer, etc., so as to avoid damage to the right end wall of the air bag 3, and to ensure the damping performance of the transverse damping device.
[0043] On the basis of the above-mentioned embodiments, the gas conveying member 4, the emergency spring 6 and the air bag 3 are coaxially extended, so that during the process that the vehicle body 2 vibrates in the transverse direction and presses the transverse damping device, the stress of the gas conveying member 4 is relatively stable, and the damping points in the two processes that the vehicle body 2 is pushed back by the air bag 3 and is pushed back by the air bag 3 and the emergency spring 6 together coincide, so that the counterforce generated by the transverse damping device to the vehicle body 2 is concentrated on the vehicle body 2 and in the area centered on the position through which the center line of the transverse damping device passes, so as to ensure the damping stability.
[0044] On the basis of the above-mentioned embodiments, the tail end of the air bag 3 is open and is sealingly connected to the gas conveying member 4.
[0045] Specifically, as shown in Figure 1As shown, the airbag 3 adopts a cover with an open left end, that is, the left end of the airbag 3 does not have an end wall extending vertically, and the left end face of the peripheral wall of the airbag 3 is sealed to the gas conveying component 4 by means of bonding or vulcanization bonding, and the left end of the airbag 3 covers the throttle port 42 inside, so the gas flowing through the throttle port 42 will flow into the first vibration damping chamber 31. With this configuration, the structure of the transverse vibration damping device is simple and the weight is light.
[0046] Furthermore, there is a deformation space between the peripheral surface of the emergency spring and the inner wall of the airbag, and the throttle port is located on the side of the emergency spring and directly connected to the deformation space, so as to ensure that the airbag can deform or recover smoothly and ensure the smooth flow of gas into the first damping chamber.
[0047] like Figure 1 As shown, based on the above embodiment, both the gas conveying component 4 and the airbag 3 are frustum-shaped structures, and both the gas conveying component 4 are shell structures. The left end of both the mounting component and the gas conveying component 4 is its own large diameter end, and the right end is its own small diameter end. Therefore, the transverse vibration damping device has high structural stability and strong fatigue resistance.
[0048] Based on the above embodiment, the gas delivery component 4 has a connecting rod 8 for inserting into the mounting hole of the suspension frame 1 and threadedly connecting to a fastener 9, so as to fix the gas delivery component 4 to the suspension frame 1 by means of the fastener 9.
[0049] Specifically, such as Figure 1 As shown, a connecting rod 8 extending laterally is fixed to the left end of the gas conveying component 4. The connecting rod 8 has external threads machined on its circumferential surface. In use, the connecting rod 8 is passed through the mounting hole extending laterally in the suspension frame 1, and then the fastener 9 with internal threads on its inner circumferential surface is put on the outside of the connecting rod 8 and tightened on the connecting rod 8 so that the fastener 9 abuts against the suspension frame 1 to fix the gas conveying component 4, that is, to install the lateral vibration damping device. With this setting, the installation difficulty of the lateral vibration damping device is relatively low.
[0050] In addition to the aforementioned lateral vibration damping device, this application also provides a rail transport vehicle that includes the lateral vibration damping device disclosed in the above embodiments. The structure of other parts of the rail transport vehicle is described in the prior art and will not be repeated here.
[0051] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the directional terms "up," "down," "left," and "right" mentioned above are defined based on the accompanying drawings in the specification.
[0052] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0053] The foregoing has provided a detailed description of the rail transit vehicle and its lateral vibration damping device provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.
Claims
1. A lateral vibration damping device, characterized in that, The device comprises: an air bag (3) and a gas delivery member (4); the gas delivery member (4) is arranged on a suspension frame (1), the air bag (3) is arranged on the gas delivery member (4), and the air bag (3) is arranged to abut against a vehicle body (2); the air bag (3) has a first damping chamber (31), the gas delivery member (4) has an inflation port, and the inflation port is communicated with the first damping chamber (31) to deliver a preset pressure of damping gas into the first damping chamber (31).
2. The lateral vibration damping device according to claim 1, characterized by the gas delivery member (4) has a second damping chamber (41) and a throttle port (42); the inflation port is communicated with the second damping chamber (41) and an external environment of the gas delivery member (4) to inflate gas into the air bag (3); the throttle port (42) is communicated with the second damping chamber (41) and the first damping chamber (31).
3. The lateral vibration damping device according to claim 2, characterized by a one-way valve (5) is arranged in the inflation port to prevent the gas in the second damping chamber (41) from being discharged through the inflation port.
4. The lateral vibration damping device according to claim 1, characterized by an emergency spring (6) is further arranged, the tail end of the emergency spring (6) is arranged in the gas delivery member (4) and located in the first damping chamber (31), and the head end of the emergency spring (6) has a damping space in the transverse direction with the head end of the air bag (3) to abut against the vehicle body (2) after the air bag (3) is deformed by a preset distance in the transverse direction.
5. The lateral vibration damping device according to claim 4, characterized by the head end of the emergency spring (6) is provided with a wear-resistant layer (7).
6. The lateral vibration damping device according to claim 4, characterized by the gas delivery member (4), the emergency spring (6) and the air bag (3) are coaxially extended.
7. The lateral vibration damping device according to claim 6, characterized by the tail end of the air bag (3) is open and sealingly connected to the gas delivery member (4).
8. The lateral vibration damping device according to claim 7, characterized by the gas delivery member (4) and the air bag (3) are both frustoconical structures, and the gas delivery member (4) is a shell structure.
9. The lateral vibration damping device according to claim 8, characterized by the gas delivery member (4) has a connecting rod (8) arranged in a mounting hole of the suspension frame (1) and threadedly connected with a fastener (9) to fix the gas delivery member (4) to the suspension frame (1) through the fastener (9).
10. A rail transit vehicle, characterized by the device comprises the lateral damping device of any one of claims 1-9.