Bogie antenna mounting beam, bogie and railway vehicle

Abstract

The application discloses a bogie antenna mounting beam, a bogie and a railway vehicle, which comprises a core mould, a mounting seat, a horizontal beam and a mounting support which are integrally formed by a composite material and cover the outer surface of the core mould, the mounting seat is located at the bottom of the center position of the horizontal beam, the mounting support is arranged at the two ends of the horizontal beam, a first mounting hole is arranged on the mounting seat and is used for mounting an antenna, and a second mounting hole is arranged on the mounting support and is used for mounting the antenna mounting beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bogie antenna mounting beam, in particular to an integrated composite bogie antenna mounting beam, a bogie and a railway vehicle. BACKGROUND

[0002] The current bogie antenna mounting beam is mainly composed of a metal tailor-welded structure, and the stress concentration at the weld is obvious. There is a problem of weld cracking and structural fatigue failure caused by severe vibration. Some parts of the antenna mounting beam are replaced by composite materials, but the design is not from the perspective of overall forming, the lightweight effect is not obvious, there are still a large number of connections, and the problem of complex structure has not been fundamentally solved. For example, in the patent with the application number CN201220447009.3, a bogie antenna beam is disclosed, which comprises a beam body, a mounting seat and a connecting plate. The mounting seat is used to connect with the end of the side beam of the bogie frame, and the two ends of the beam body are connected with the mounting seat. The upper end of the connecting plate is connected with the beam body, and the connecting plate has a plurality of mounting holes for mounting auxiliary devices of the bogie. The mounting seat is a metal frame welded by a metal plate or an integrally formed metal structure, and the mounting seat is connected with the side beam of the bogie frame by bolts. Therefore, the problem of fatigue failure still exists. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide an integrated composite bogie antenna mounting beam, a bogie and a railway vehicle.

[0004] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0005] In the first aspect, the embodiments of the present application provide an integrated composite bogie antenna mounting beam, which comprises a core mold and a mounting seat, a horizontal beam and a mounting bracket integrally formed by a composite material covering the outer surface of the core mold. The mounting seat is located at the bottom of the center position of the horizontal beam, and the mounting bracket is arranged at both ends of the horizontal beam. A first mounting hole is arranged on the mounting seat for the installation of an antenna, and a second mounting hole is arranged on the mounting bracket for the installation of the antenna mounting beam itself.

[0006] As a further technical scheme, from the connection position of the mounting bracket and the horizontal beam, along the extension direction of the mounting bracket, the outer contour area of the mounting bracket becomes larger and larger.

[0007] As a further technical scheme, a first process hole is arranged on the mounting seat, and a second process hole is arranged on the mounting bracket.

[0008] As a further technical scheme, the mounting bracket is symmetrically arranged at both ends of the horizontal beam relative to the center line of the horizontal beam.

[0009] As a further technical solution, the layers of the mounting seat, the horizontal beam and the mounting bracket are carbon fiber woven cloth, first carbon fiber unidirectional tape, glass fiber woven cloth and second carbon fiber unidirectional tape from outside to inside.

[0010] As a further technical solution, the carbon fiber woven cloth, the first carbon fiber unidirectional tape, the glass fiber woven cloth and the second carbon fiber unidirectional tape are staggered.

[0011] As a further technical solution, the layer thickness and direction of the first unidirectional tape layer and the second unidirectional tape layer are set according to the principal stress direction of the bogie antenna mounting beam.

[0012] As a further technical solution, the connection positions of the mounting seat, the horizontal beam and the mounting bracket are all connected through a circular arc.

[0013] In a second aspect, the application further provides a bogie, which comprises the bogie antenna beam structure, the antenna and the bogie frame, the mounting bracket is connected to the bogie frame, and the antenna is connected to the mounting seat.

[0014] In a third aspect, the application further provides a railway vehicle, which comprises the bogie described above.

[0015] The beneficial effects of the embodiments of the application are as follows:

[0016] 1. The mounting bracket, the horizontal beam and the antenna mounting seat of the antenna mounting beam are integrated in the application, which is different from the whole large cross-section structure, and the closed cavity structure is integrally formed through the variable cross-section design, so that the weight is reduced and the overall stiffness is improved, and the reasonable process hole design realizes the installation of the closed cavity structure.

[0017] 2. The antenna mounting beam of the application is different from the isotropic single layer design, and carbon fiber woven cloth-carbon fiber unidirectional tape-glass fiber woven cloth-carbon fiber unidirectional tape are designed from outside to inside, the unidirectional tape arranged according to the principal stress direction makes the most of the anisotropy of the composite material, and the glass fiber improves the impact resistance and fatigue resistance of the structure.

[0018] 3. The application realizes the integrally formed closed cavity structure, and the whole closed cavity structure has no parting surface; the preformed body can be laid on the inflatable core mold, which is separated from the external steel film, so that the preformed body and the forming mold are separated, the production efficiency is improved, the fiber continuity of the whole structure is realized through the staggered layer design method between layers, and the stress concentration phenomenon is greatly avoided; the inflatable core mold has a double effect: providing forming pressure through heating and expansion together with the external mold during forming, and serving as a reinforcing core to improve the overall stiffness of the antenna beam after forming. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application, and are incorporated into and constitute a part of this specification. The embodiments of the application, and their

[0020] Figure 1 、 Figure 2 is a schematic diagram of the overall structure of the application;

[0021] Figure 3 is a schematic diagram of the structure when the application is being made;

[0022] Figure 4 is a schematic diagram of the staggered overlaying of the layers during the making of the application;

[0023] In the figure: 1 horizontal beam, 2 mounting bracket, 3 mounting seat, 21 process hole, 22 mounting hole, 31 process hole, 32 mounting hole; 4 core mold, 5 fiber layer, 6 external steel mold. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed description is illustrative only, and is intended to provide further description in order to provide a further understanding of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0025] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the term "comprising" and / or "including" is used in the specification, it means that the features, steps, operations, devices, components and / or combinations thereof are present;

[0026] For the convenience of description, if the terms "upper", "lower", "left", "right" appear in the present application, they only indicate the upper, lower, left and right directions consistent with the drawings themselves, and do not limit the structure, but only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the application.

[0027] As introduced in the background, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an integrated composite bogie antenna mounting beam.

[0028] In a typical embodiment of the present application, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4The integrated composite bogie antenna mounting beam disclosed in the embodiment comprises a core mold and a mounting seat 3, a horizontal beam 1 and a mounting bracket 2 which are integrally formed by composite materials and cover the outer surface of the core mold. The mounting seat 3 is located at the bottom of the center position of the horizontal beam 1. The mounting bracket 2 is arranged at both ends of the horizontal beam 1. From the position where the mounting bracket is connected with the horizontal beam, the outer contour area of the mounting bracket 2 becomes larger and larger along the extending direction of the mounting bracket, that is, the mounting bracket is a variable cross-section structure. A first mounting hole 32 is arranged on the mounting seat 3, and the first mounting hole 32 is used for mounting an antenna. A second mounting hole 22 is arranged on the mounting bracket 2, and the second mounting hole 22 is used for mounting the antenna mounting beam itself.

[0029] A first process hole 31 is arranged on the mounting seat 3, and the first process hole 31 is used for bolt fastening at the first mounting hole 32. A second process hole 21 is arranged on the mounting bracket 2, and the second process hole 21 is used for bolt fastening at the second mounting hole 22.

[0030] Further, the mounting bracket 2 is symmetrically arranged at both ends of the horizontal beam 1 relative to the center line of the horizontal beam 1.

[0031] Further, the outer contours of the mounting bracket and the mounting seat are both four-prism structures with gradually changing areas. From the position where the mounting bracket is connected with the horizontal beam, the outer contour area of the mounting bracket and the mounting seat becomes larger and larger along the extending direction of the mounting bracket and the mounting seat, so that the overall structure is a variable cross-section closed cavity type structure, so as to improve the overall rigidity of the bogie antenna mounting beam.

[0032] Further, the surface where the mounting bracket is connected with the bogie member is a plane, four mounting holes 22 are arranged on the plane, one process hole 21 is arranged on each of the two side surfaces adjacent to the plane, and the mounting holes 22 are arranged according to the mounting relationship on the bogie. Each two mounting holes 22 correspond to one process hole 21.

[0033] Further, the connection positions of the mounting seat, the horizontal beam and the mounting bracket are all connected through a circular arc, so that the stress distribution is more uniform, the stress concentration phenomenon is avoided, and the high adhesion degree during the laying of the fiber cloth (strip) is ensured.

[0034] Further, the horizontal beam is an equisection rectangular beam, the rectangular beam has good anti-rotation function, and the mounting stability of the antenna is ensured to a certain extent.

[0035] Further, the surface where the mounting seat is connected with the antenna is a plane, four mounting holes 32 are arranged on the plane (bottom surface), two process holes 31 are arranged on each of the two side surfaces, the mounting holes 32 are arranged according to the mounting relationship of the antenna, and each mounting hole 32 corresponds to one process hole 31.

[0036] Further, the carbon fiber ply of the mounting seat 3, the horizontal beam 1 and the mounting bracket 2 is carbon fiber woven cloth-carbon fiber unidirectional tape-glass fiber woven cloth-carbon fiber unidirectional tape from outside to inside, that is, the overall ply of the antenna mounting beam is carbon fiber woven cloth-first carbon fiber unidirectional tape-glass fiber woven cloth-second carbon fiber unidirectional tape from outside to inside, wherein the ply thickness and direction of the first carbon fiber unidirectional tape layer and the second carbon fiber unidirectional tape are designed according to the principal stress direction obtained through simulation analysis, and the ply angle is set as 0°, ±45° and 90° (with the in-plane extension direction of each component as the 0° reference direction), according to the simulation analysis, the horizontal beam mainly bears bending stress, the arrangement of the first carbon fiber unidirectional tape and the second carbon fiber unidirectional tape is mainly 0° and ±45°, the mounting bracket mainly bears shear stress, the arrangement of the first carbon fiber unidirectional tape and the second carbon fiber unidirectional tape is mainly 90° and ±45°, the mounting seat mainly bears tensile stress, the arrangement of the first carbon fiber unidirectional tape and the second carbon fiber unidirectional tape is mainly 90° and ±45°, the anisotropy of the composite material is used to the greatest extent, and the lightweight design according to the stress flow is realized. The glass fiber woven cloth improves the impact resistance and fatigue resistance of the bogie antenna mounting beam as a whole, and the carbon fiber woven cloth ensures the appearance of the outer visible surface of the bogie antenna mounting beam.

[0037] In the preform preparation process, the ply is pasted from inside to outside according to the ply design sequence starting from the inflatable core mold 4, the joint cover is performed between layers according to the ply design of staggered layer covering, the whole closed cavity structure without parting surface and the fiber continuity of the overall structure are realized, the preform is made, and then the mold is cured to realize the separation of the preform and the forming mold, the core mold 4 provides the forming pressure after being heated and expanded during the forming, and the core mold 4 serves as a reinforcing core to improve the overall stiffness of the antenna beam after the forming.

[0038] The antenna mounting beam is made by adopting the process of inflation core mold molding, the mounting bracket, the horizontal beam and the antenna mounting seat of the antenna mounting beam are structurally integrated, and a variable cross-section closed cavity structure (wall thickness 8mm) is formed; process holes are designed in the mounting hole area, which is convenient for the installation of the antenna beam itself and the antenna; the overall ply of the antenna mounting beam is carbon fiber woven cloth-carbon fiber unidirectional tape-glass fiber woven cloth-carbon fiber unidirectional tape from outside to inside, wherein the ply thickness and direction of the unidirectional tape are designed according to the principal stress direction obtained through simulation analysis, the ply is pasted from inside to outside according to the ply design sequence starting from the inflatable core mold during the preform preparation process, the joint cover is performed between layers according to the ply design of staggered layer covering, the whole closed cavity structure without parting surface and the fiber continuity of the overall structure are realized, the preform is made, and then the mold is cured to realize the separation of the preform and the forming mold, the core mold is heated and expanded to provide the forming pressure during the forming, and the core mold serves as a reinforcing core to improve the overall stiffness of the antenna beam after the forming.

[0039] The preparation process of the antenna mounting beam described in the patent is schematically shown in the figure, after the preform is made on the core mold, the mold is cured, and the forming pressure is provided by the thermal expansion of the core mold.

[0040] The mounting bracket, horizontal beam and antenna mounting seat of the antenna mounting beam are integrally designed by using the integrated molding advantage of the composite material, the overall structure is a variable cross-section closed cavity structure, a process hole is arranged to realize the mounting of the antenna beam itself and the mounting of the antenna, the closed cavity structure is integrally formed by means of the expansion core mold molding process, the entire closed cavity structure has no parting surface, the fiber continuity of the overall structure is realized by means of the staggered layer covering design method between layers, the expansion core mold in the cavity improves the rigidity of the entire antenna beam after molding, the layers of the overall antenna mounting beam are composed of carbon fiber woven cloth prepreg, carbon fiber unidirectional tape prepreg and glass fiber woven cloth prepreg, the lightweight design of the force flow is realized, the impact resistance and fatigue resistance performance are realized by introducing glass fiber, and the integrated design of the structure is realized.

[0041] Compared with the traditional metal structure antenna mounting beam, the antenna mounting beam provided by the present application is reduced by more than 50%, and the problems of vibration fatigue, complex structure and difficult assembly of the traditional antenna beam are solved.

[0042] The bogie disclosed in the embodiment also comprises the bogie antenna beam structure, the antenna and the bogie frame, the mounting bracket is connected with the bogie frame, and the antenna is connected with the mounting seat. Since the bogie is provided with the bogie antenna beam structure as described above, the bogie also has all the advantages as described above.

[0043] The bogie disclosed in the embodiment also comprises the bogie antenna beam structure, the antenna and the bogie frame, the mounting bracket is connected with the bogie frame, and the antenna is connected with the mounting seat. Since the bogie is provided with the bogie antenna beam structure as described above, the bogie also has all the advantages as described above.

[0044] Finally, it should be noted that the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations.

[0045] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bogie antenna mounting beam, characterized by, The installation seat is located at the bottom of the horizontal beam, the installation support is arranged at both ends of the horizontal beam, the first installation hole is arranged on the installation seat and is used for installing the antenna, and the second installation hole is arranged on the installation support and is used for installing the antenna. The outer contour area of the installation support is larger and larger along the extending direction of the installation support from the position where the installation support is connected with the horizontal beam. The installation seat, the horizontal beam and the installation support are sequentially provided with carbon fiber woven cloth, first carbon fiber unidirectional tape, glass fiber woven cloth and second carbon fiber unidirectional tape from the outer layer to the inner layer; the carbon fiber woven cloth, the first carbon fiber unidirectional tape, the glass fiber woven cloth and the second carbon fiber unidirectional tape are staggered; and the thickness and direction of the first carbon fiber unidirectional tape and the second carbon fiber unidirectional tape are arranged according to the main stress direction of the bogie antenna installation beam.

2. The bogie antenna mounting beam of claim 1, wherein, The first process hole is arranged on the installation seat, and the second process hole is arranged on the installation support.

3. The bogie antenna mounting beam of claim 1, wherein, The installation support is symmetrically arranged at both ends of the horizontal beam relative to the center line of the horizontal beam.

4. The bogie antenna mounting beam of claim 1, wherein, The connection positions of the installation seat, the horizontal beam and the installation support are all connected through a circular arc.

5. A bogie, characterized by The bogie antenna installation beam, the antenna and the bogie frame are arranged according to any one of claims 1-4, the installation support is connected with the bogie frame, and the antenna is connected with the installation seat.

6. A rail vehicle, characterized by The bogie is arranged according to claim 5.

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