Vibration and noise reduction train body and vacuum pipeline train

Abstract

The invention relates to the technical field of vacuum pipeline traffic, and discloses a vibration and noise reduction train body and a vacuum pipeline train. The vehicle body comprises an inner cabin body, an outer cabin body, a shock absorber and a vacuum layer, the vacuum layer is arranged between the inner cabin body and the outer cabin body, the inner cabin body and the outer cabin body are connected through the shock absorber, the inner cabin body comprises an inner cabin skin and an inner cabin framework, the inner cabin skin is connected with the inner cabin framework, and the inner cabin skin is connected with the inner cabin framework. The outer cabin body comprises an outer cabin skin and an outer cabin framework, and the outer cabin skin is connected with the outer cabin framework. Therefore, after the outer cabin body is damaged, the independent inner cabin body still keeps enough strength and sealing performance, and the safety of passengers in the cabin can be effectively kept. Moreover, a vacuum layer is arranged between the inner cabin body and the outer cabin body, air sound transmission between the outer cabin body and the inner cabin body can be isolated, the damper adopts an active control mode, damping of the damper is adjusted, structural sound can be effectively absorbed, meanwhile, vibration transmission paths are reduced, and the riding comfort is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum tube transportation, and in particular to a vibration and noise reduction vehicle body and a vacuum tube train. Background Art

[0002] The high-speed railway trains currently in use run at normal temperature and pressure. The main power loss during running comes from air resistance. Air resistance increases with speed. Air resistance is proportional to the square of speed, and aerodynamic noise is proportional to the fourth power of speed. Therefore, further increasing the running speed of the train will lead to a sharp increase in aerodynamic noise and resistance.

[0003] Therefore, in order to further increase the speed and reduce air resistance, the train is placed in a vacuum tube, and the vacuum tube is evacuated to a vacuum, which can significantly reduce air resistance, energy consumption and aerodynamic noise.

[0004] As the train travels at a speed of up to 600km / h to 1000km / h, high requirements are placed on the lightweight design and structural strength of the car body. At present, traditional train bodies are mostly thin-walled structures made of aluminum alloy, and are mostly in the form of multi-layer wall panels. Elastic plates, air layers and multi-layer sound-absorbing materials are alternately placed on the aluminum alloy skin to absorb noise outside the cabin. As the train body has a large rigidity and the layers of material on the skin are directly connected, the vibration caused to the cabin structure during operation has a large impact, which has a great impact on passenger comfort. In addition, due to the use of multi-layer materials, the structural efficiency is low. Summary of the invention

[0005] The present invention provides a vibration-reducing and noise-reducing car body and a vacuum tube train, which can solve the technical problems in the prior art.

[0006] The present invention provides a vibration-damping and noise-reducing vehicle body, wherein the vehicle body comprises an inner cabin, an outer cabin, a shock absorber and a vacuum layer, wherein the vacuum layer is arranged between the inner cabin and the outer cabin, and the inner cabin and the outer cabin are connected via the shock absorber, the inner cabin comprises an inner cabin skin and an inner cabin frame, wherein the inner cabin skin is connected to the inner cabin frame, and the outer cabin comprises an outer cabin skin and an outer cabin frame, wherein the outer cabin skin is connected to the outer cabin frame.

[0007] Preferably, the inner cabin body further comprises an inner cabin damper mounting bracket, which is connected to the inner cabin skin by co-curing.

[0008] Preferably, the outer cabin body further comprises an outer cabin shock absorber mounting bracket, which is connected to the outer cabin frame by a pre-embedded-co-curing method.

[0009] Preferably, the inner cabin skin is connected to the inner cabin skeleton by co-curing.

[0010] Preferably, the outer cabin skin is connected to the outer cabin frame by co-curing.

[0011] Preferably, the inner cabin skin, the inner cabin frame, the outer cabin skin and the outer cabin frame are made of carbon fiber epoxy composite material.

[0012] The present invention also provides a vacuum tube train, which includes the above-mentioned car body.

[0013] Through the above technical solution, an inner and outer double-layer cabin can be set up, and a redundant sealing design can be adopted. After the outer cabin is damaged, the independent inner cabin still maintains sufficient strength and sealing, which can effectively keep the passengers in the cabin safe. In addition, there is a vacuum layer between the inner and outer cabins, which can isolate the air sound transmission between the outer cabin and the inner cabin, and only the structural sound bridge is transmitted, so that the sound transmission path from the outer cabin to the inner cabin is environment-outer cabin-shock absorber-inner cabin. The shock absorber adopts an active control method to adjust the shock absorber damping, which can effectively absorb structure-borne sound, while reducing the vibration transmission path, and effectively improve riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1A-1B A schematic diagram of a vibration and noise reduction vehicle body according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0018] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0019] Figure 1A-1B A schematic diagram of a vibration and noise reduction vehicle body according to an embodiment of the present invention is shown.

[0020] like Figure 1A-1B As shown, an embodiment of the present invention provides a vibration and noise reduction vehicle body, wherein the vehicle body includes an inner cabin, an outer cabin, a shock absorber 5 and a vacuum layer 8, wherein the vacuum layer 8 is arranged between the inner cabin and the outer cabin, and the inner cabin and the outer cabin are connected via the shock absorber 5, the inner cabin includes an inner cabin skin 3 and an inner cabin frame 4, the inner cabin skin 3 is connected to the inner cabin frame 4, the outer cabin includes an outer cabin skin 1 and an outer cabin frame 2, and the outer cabin skin 1 is connected to the outer cabin frame 2.

[0021] Through the above technical solution, an inner and outer double-layer cabin can be set up, and a redundant sealing design can be adopted. After the outer cabin is damaged, the independent inner cabin still maintains sufficient strength and sealing, which can effectively keep the passengers in the cabin safe. In addition, there is a vacuum layer between the inner and outer cabins, which can isolate the air sound transmission between the outer cabin and the inner cabin, and only the structural sound bridge is transmitted, so that the sound transmission path from the outer cabin to the inner cabin is environment-outer cabin-shock absorber-inner cabin. The shock absorber adopts an active control method to adjust the shock absorber damping, which can effectively absorb structure-borne sound, while reducing the vibration transmission path, and effectively improve riding comfort.

[0022] According to one embodiment of the present invention, the inner cabin body further comprises an inner cabin damper mounting bracket 7, which is connected to the inner cabin skin 3 by co-curing.

[0023] According to an embodiment of the present invention, the outer cabin body further includes an outer cabin damper mounting bracket 6, which is connected to the outer cabin frame 2 by a pre-embedded-co-curing method.

[0024] Thereby, the inner cabin shock absorber mounting bracket can be integratedly connected with the inner cabin skin, and the outer cabin shock absorber mounting bracket can be integrated and reliably connected with the outer cabin frame, so as to more reliably support and set the shock absorber.

[0025] According to an embodiment of the present invention, the inner cabin skin 3 is connected to the inner cabin skeleton 4 by co-curing.

[0026] According to an embodiment of the present invention, the outer cabin skin 1 is connected to the outer cabin frame 2 by co-curing.

[0027] In this way, the inner cabin skin and the inner cabin frame can be integrated, the outer cabin skin and the outer cabin frame can be integrated, and the sealing reliability of the inner and outer cabin bodies can be improved.

[0028] According to an embodiment of the present invention, the inner cabin skin, the inner cabin frame, the outer cabin skin and the outer cabin frame are made of carbon fiber epoxy composite material.

[0029] The cabin skin is formed by laying carbon fiber epoxy composite materials, with a smooth aerodynamic shape and seamless surface, avoiding the weld fatigue problem caused by welding aluminum alloy profiles. In addition, the skin and cabin frame adopt co-curing technology, which reduces the use of mechanical connection methods such as rivets and screws, reduces the difficulty of assembly, and improves assembly processability and sealing reliability.

[0030] An embodiment of the present invention further provides a vacuum tube train, which includes the car body described in the above embodiment.

[0031] It can be seen from the above embodiments that the vibration-damping and noise-reducing car body described in the above embodiments of the present invention can meet the requirements of lightweight design of the car body, reduce the transmission of external environmental noise to the cabin, and reduce the transmission of vibration to the inner cabin during train operation. In addition, the aerodynamic shape is smooth, the surface is seamless, and the skin and the cabin frame adopt co-curing technology, which reduces the use of mechanical connection methods such as rivets and screws, and has excellent sealing performance. At the same time, it reduces the difficulty of assembly and improves assembly processability. In general, the vibration-damping and noise-reducing car body described in the present invention has at least the following advantages: large components are integrally formed, the number of parts is small, the workload of general assembly is low, the aerodynamic shape is smooth, the structure is simple, the structural load-bearing efficiency is high, the anti-fatigue performance is excellent, and the sound insulation performance is excellent.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration and noise reduction vehicle body, It is characterized in that The vehicle body includes an inner cabin, an outer cabin, a shock absorber and a vacuum layer, wherein the vacuum layer is arranged between the inner cabin and the outer cabin, and the inner cabin and the outer cabin are connected through the shock absorber, the inner cabin includes an inner cabin skin and an inner cabin frame, the inner cabin skin is connected to the inner cabin frame, and the outer cabin includes an outer cabin skin and an outer cabin frame, the outer cabin skin is connected to the outer cabin frame.

2. The vehicle body according to claim 1, It is characterized in that The inner cabin body also includes an inner cabin shock absorber mounting bracket, which is connected to the inner cabin skin by co-curing.

3. The vehicle body according to claim 2, It is characterized in that The outer cabin body also includes an outer cabin damper mounting bracket, which is connected to the outer cabin frame by a pre-embedded-co-cured method.

4. The vehicle body according to claim 1, It is characterized in that The inner cabin skin is connected to the inner cabin frame by co-curing.

5. The vehicle body according to claim 4, It is characterized in that The outer cabin skin is connected to the outer cabin frame by co-curing.

6. The vehicle body according to any one of claims 1 to 5, It is characterized in that The inner cabin skin, the inner cabin frame, the outer cabin skin and the outer cabin frame are made of carbon fiber epoxy composite material.

7. A vacuum tube train, It is characterized in that A vehicle body comprising any one of claims 1 to 6.

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