A rail vehicle and a car body skirt thereof

Abstract

The present invention relates to a rail vehicle and a body skirt of the rail vehicle, wherein the body skirt of the rail vehicle comprises a skirt body, which is an integrally formed carbon fiber composite material; the skirt body comprises an outer skin, an inner skin, and an axial hole portion and a rib group arranged between the outer skin and the inner skin, the rib group can form a multi-cavity structure between the outer skin and the inner skin, and the axial hole portion is located at one end of the multi-cavity structure. The body skirt can meet the requirements of stiffness, strength and life, and can also achieve the goal of lightweight.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a rail vehicle and a vehicle body skirt thereof. Background Art

[0002] In order to reduce the running resistance and noise of rail vehicles, skirts are installed on the sides of the vehicle body, which can resist snow and ice, prevent debris from impacting and damaging the equipment under the vehicle, and avoid the accumulation of dirt and rain and snow under the vehicle.

[0003] There are three main types of existing body skirts: the first is a body skirt made of lightweight aluminum alloy, the second is a body skirt with a plate rib structure, and the third is a body skirt with a sandwich structure. Among them, the first and second body skirts can meet the requirements of stiffness, strength, impact, fire resistance, and life, but they are heavy and not conducive to achieving the goal of lightweight; the third type of body skirt with a sandwich structure has problems such as the core material being sensitive to moisture, the interface connection strength between the core material and the skin is not high, or due to the compressive strength limitation of the core material, the mechanical properties of the formed skin are low, resulting in skin damage resistance, which affects the service life.

[0004] Therefore, how to provide a body skirt of a rail vehicle that can meet the requirements of stiffness, strength and life, while also achieving the goal of lightweight, is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a rail vehicle and a body skirt of the rail vehicle, which can meet the requirements of stiffness, strength and life, and can also achieve the goal of lightweight.

[0006] In order to solve the above technical problems, the present invention provides a body skirt of a rail vehicle, which includes a skirt body, and the skirt body is an integrally formed carbon fiber composite material; the skirt body includes an outer skin, an inner skin, and an axial hole portion and a vertical rib group arranged between the outer skin and the inner skin, the vertical rib group can form a multi-cavity structure between the outer skin and the inner skin, and the axial hole portion is located at one side end of the multi-cavity structure.

[0007] The skirt body is made of a carbon fiber composite material with high rigidity and lightness, which can reduce weight while ensuring structural strength, making it easier to achieve the lightweight goal. In addition, since carbon fiber composite materials are insensitive to water vapor, there are no embedded metal parts and core materials, and no interface compatibility issues, the service life of the body skirt can be guaranteed to meet the service life requirements.

[0008] The rib group, the shaft hole part, the outer skin and the inner skin are integrally formed, which can simplify the manufacturing process, improve production efficiency and reduce costs. In addition, compared with the process of secondary assembly molding, the integrally formed structure can ensure the connection stability between the various parts of the skirt body, thereby ensuring the overall structural strength of the skirt body and its service life.

[0009] Optionally, the vertical rib group includes a plurality of I-shaped reinforcing ribs arranged in parallel and at intervals.

[0010] Optionally, the I-shaped reinforcement rib includes two reinforcement members in a C-shaped structure and a vertical rib plate sandwiched between the two reinforcement members, and the opening directions of the two reinforcement members are opposite.

[0011] Optionally, the ply direction / ratio of the outer skin is: 0° / 28%, ±45° / 44%, 90° / 28%; the ply direction / ratio of the inner skin is: 0° / 21.5%, ±45° / 57%, 90° / 21.5%.

[0012] Optionally, the outer skin and the inner skin include a carbon fiber prepreg layer, a glass fiber prepreg layer, a basalt prepreg layer and a fireproof layer arranged in sequence, and the fireproof layer is located on the outer side wall of the multi-cavity structure.

[0013] Optionally, a wear-resistant layer is provided on the inner wall of the shaft hole of the shaft hole portion.

[0014] Optionally, a thickened area is further provided in the middle of the outer skin or the inner skin, and the thickened area is formed in the multi-cavity structure.

[0015] Optionally, two end seals are further included, and the two end seals are sealed at two ends of the multi-cavity structure by bonding.

[0016] Optionally, a sealing groove for installing a sealing member is provided at one side end of the multi-cavity structure facing the shaft hole portion and one side end away from the shaft hole portion.

[0017] Optionally, it further comprises a skirt panel accessory, wherein the skirt panel accessory is fixed to the multi-cavity structure via a fastener, and the skirt panel accessory comprises at least one of a latch lock, a wind adjustment window and a guide block.

[0018] The present invention also provides a rail vehicle, which comprises the vehicle body skirt panel as described above.

[0019] The technical effect of the rail vehicle having the body skirt as described above is similar to the technical effect of the above-mentioned body skirt, and will not be described in detail here to save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic structural diagram of a car body skirt plate of a rail vehicle provided by an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the structure of the skirt body and the end seal;

[0022] Figure 3 is a cross-sectional view of the skirt body;

[0023] Figure 4 It is a schematic diagram of the ply structure of the skirt body;

[0024] Figure 5 yes Figure 4 A partial enlarged view of .

[0025] Attached Figure 1-5 In the figure, the reference numerals are described as follows:

[0026] 1-outer skin; 2-inner skin; 3-axial hole; 41-I-shaped reinforcement rib, 42-reinforcement member, 43-vertical rib plate; 5-multi-cavity structure, 51-cavity; 6-thickening area; 7-end seal; 8-sealing groove; 9-guide block. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please refer to Figure 1-5 , Figure 1 It is a schematic structural diagram of a car body skirt plate of a rail vehicle provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the skirt body and the end seal; Figure 3 is a cross-sectional view of the skirt body; Figure 4 It is a schematic diagram of the ply structure of the skirt body; Figure 5 yes Figure 4 A partial enlarged view of .

[0029] The embodiment of the present invention provides a rail vehicle and a body skirt of the rail vehicle, wherein the rail vehicle includes the body skirt, specifically, the body skirt in this embodiment includes a skirt body, specifically, the skirt body is an integrally formed carbon fiber composite material, such as Figure 1-3 As shown, the skirt body includes an outer skin 1, an inner skin 2, an axial hole portion 3 and a vertical rib group, wherein the vertical rib group and the axial hole portion 3 are integrally formed between the outer skin 1 and the inner skin 2, and the vertical rib group forms a multi-cavity structure 5 between the outer skin 1 and the inner skin 2, and the axial hole portion 3 is located at one side end of the multi-cavity structure 5.

[0030] Specifically, the skirt body is made of a carbon fiber composite material with high rigidity and lightness, which can reduce weight while ensuring structural strength, making it easier to achieve the lightweight goal. In addition, since the carbon fiber composite material is insensitive to water vapor, there are no embedded metal parts and core materials, and no interface compatibility issues, the service life of the body skirt can be guaranteed and meet the service life requirements.

[0031] In this embodiment, the rib group, the shaft hole portion 3, the outer skin 1, and the inner skin 2 are integrally formed. Figure 4 As shown, one-piece molding can simplify the manufacturing process, improve production efficiency and reduce costs. In addition, compared with the process of secondary assembly molding, the one-piece molding structure can ensure the connection stability between the various parts of the skirt body, thereby ensuring the overall structural strength of the skirt body and its service life.

[0032] In the above embodiment, the rib group includes a plurality of I-shaped reinforcing ribs 41 arranged in parallel at intervals, and a cavity is formed between two adjacent reinforcing ribs. Of course, in this embodiment, there is no limitation on the specific structure of each reinforcing rib of the rib group, and it can also be set as a partition between the outer skin 1 and the inner skin 2. The setting of the I-shaped reinforcing rib 41 can increase the contact area between the end of the reinforcing rib and the skin during the paving process, thereby ensuring the connection stability between each reinforcing rib of the rib group and the skin.

[0033] Further, such as Figure 5 As shown, the I-shaped reinforcement rib 41 includes two reinforcement members 42 and a rib plate 43 in a C-shaped structure, the opening directions of the two reinforcement members 42 are opposite, and the rib plate 43 is sandwiched between the two reinforcement members 42. Such a setting can simplify the molding process of the multi-cavity structure 5. Specifically, when preparing the multi-cavity structure 5, prepreg needs to be laid on both sides of the outer wall of the core mold. After the laying is completed, the prepreg can form a C-shaped structure wrapped around the outer wall of the core mold at both ends of the core mold, and then each core mold is arranged side by side, and the opening directions of the C-shaped structures of two adjacent core molds are opposite and a rib plate 43 is clamped, and then the outer skin and the inner skin are laid on the end faces of both sides of each core mold. After the skin is laid, the lower mold is placed, and then the upper mold is closed, the core mold is pulled out, and vacuum curing is performed. That is, vacuum curing is performed after the core mold is pulled out. Therefore, the setting of the rib plate 43 can provide support for the two C-shaped structures to ensure that no deformation occurs during the vacuum curing process.

[0034] In the above embodiment, the ply direction / ratio of the outer skin 1 is: 0° / 28%, ±45° / 44%, 90° / 28%; the ply direction / ratio of the inner skin 2 is: 0° / 21.5%, ±45° / 57%, 90° / 21.5%. Through simulation calculation and test summary, it can be known that plying the outer skin 1 and the inner skin 2 according to the above ply direction / ratio can achieve the optimal structural strength of the body skirt and ensure the overall structural strength.

[0035] In the above embodiment, the materials of the layers of the outer skin 1 and the inner skin 2 are the same, including a carbon fiber prepreg layer, a glass fiber prepreg layer, a basalt prepreg layer and a fireproof layer arranged in sequence. The fireproof layer is located on the outer side wall of the multi-cavity structure 5, that is, the side wall of the outer skin 1 away from the inner skin 2 and the side wall of the inner skin 2 away from the outer skin 1 are both provided with basalt prepreg and a fireproof layer, wherein the basalt prepreg can improve the wear resistance of the body skirt, thereby ensuring its service life, and the setting of the fireproof layer can ensure the fireproof performance of the body skirt and improve safety.

[0036] Similarly, in this embodiment, a wear-resistant layer is also provided on the inner wall of the shaft hole of the shaft hole portion 3. Since the shaft hole of the shaft hole portion 3 needs to cooperate with the rotating shaft and rotate relatively with the rotating shaft, the wear-resistant layer provided on the inner wall of the shaft hole can improve the wear resistance of the inner wall of the shaft hole, ensure the service life of the shaft hole portion 3, and further ensure the service life of the body skirt. Specifically, in this embodiment, there is no restriction on the specific material of the wear-resistant layer, such as it can be set as a basalt prepreg layer.

[0037] In the above embodiment, if Figure 3 As shown, a thickened area 6 is further provided in the middle of the outer skin 1 or the inner skin 2, wherein the "middle" refers to the middle area located in the multi-cavity structure 5, and is not strictly the middle position measured from the perspective of size. The multi-cavity structure 5 includes a plurality of cavities 51, and the thickness of the outer skin 1 or the inner skin 2 located in the middle cavity 51 is greater than the thickness of the outer skin 1 or the inner skin 2 located in the end cavity 51, and the thickened area 6 is located in the multi-cavity structure 5, so that the outer surface structure of the skirt body is smooth while ensuring the overall structural strength.

[0038] In the above embodiment, if Figure 2 As shown, the body skirt also includes two end seals 7, which are respectively fixed to the two ends of the multi-cavity structure 5 by bonding, so as to seal each cavity 51 of the multi-cavity structure 5 from both ends, and prevent water and dust from entering the cavity 51 to affect the service life of the body skirt. Specifically, in order to further ensure the installation stability between the end seal 7 and the skirt body, the end seal 7 and the skirt body can be further fixed by riveting.

[0039] In the above embodiment, if Figure 3 and Figure 4 As shown, the multi-cavity structure 5 is further provided with sealing grooves 8 at one end facing the shaft hole portion 3 and at one end away from the shaft hole portion 3, respectively. The sealing grooves 8 are used to install sealing members to achieve sealing between the vehicle body skirt and other surrounding structures during installation.

[0040] In the above embodiment, the body skirt also includes skirt accessories. Specifically, the skirt accessories are fixed to the multi-cavity structure 5 by fasteners, and the skirt accessories include at least one of a latch, a windshield, and a guide block 9 (metal material). The connection is achieved by fasteners, which is convenient for disassembly and assembly, and when the skirt accessories are damaged, they are easy to replace, which has good flexibility.

[0041] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A body skirt of a rail vehicle, characterized in that: It includes a skirt panel body, wherein the skirt panel body is an integrally formed carbon fiber composite material; The skirt plate body comprises an outer skin (1), an inner skin (2), an axial hole portion (3) and a rib group arranged between the outer skin (1) and the inner skin (2), wherein the rib group is capable of forming a multi-cavity structure (5) between the outer skin (1) and the inner skin (2), and the axial hole portion (3) is located at one end of the multi-cavity structure (5); The vertical rib group comprises a plurality of I-shaped reinforcing ribs (41) arranged in parallel at intervals; The I-shaped reinforcing rib (41) comprises two reinforcing members (42) in a C-shaped structure and a rib plate (43) sandwiched between the two reinforcing members (42), and the opening directions of the two reinforcing members (42) are opposite; The ply direction / ratio of the outer skin (1) is: 0° / 28%, ±45° / 44%, 90° / 28%; the ply direction / ratio of the inner skin (2) is: 0° / 21.5%, ±45° / 57%, 90° / 21.5%; A thickened area (6) is also provided in the middle of the outer skin (1) or the inner skin (2), and the thickened area (6) is formed in the multi-cavity structure (5).

2. The body skirt of a rail vehicle according to claim 1, characterized in that: The outer skin (1) and the inner skin (2) comprise a carbon fiber prepreg layer, a glass fiber prepreg layer, a basalt prepreg layer and a fireproof layer which are arranged in sequence, and the fireproof layer is located on the outer side wall of the multi-cavity structure (5).

3. The body skirt of a rail vehicle according to claim 1, characterized in that: The inner wall of the shaft hole of the shaft hole portion (3) is provided with a wear-resistant layer.

4. The body skirt of a rail vehicle according to claim 1, characterized in that: It also comprises two end seals (7), wherein the two end seals (7) are sealed at two ends of the multi-cavity structure (5) by bonding.

5. The body skirt of a rail vehicle according to claim 1, characterized in that: A sealing groove (8) for installing a sealing member is provided at one side end of the multi-cavity structure (5) facing the shaft hole portion (3) and at one side end away from the shaft hole portion (3).

6. The body skirt of a rail vehicle according to claim 1, characterized in that: It also includes a skirt panel accessory, which is fixed to the multi-cavity structure (5) via a fastener, and the skirt panel accessory includes at least one of a latch lock, a wind adjustment window, and a guide block (9).

7. A rail vehicle, characterized in that: The vehicle body skirt comprises the vehicle body skirt as claimed in any one of claims 1 to 6.

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