CN210101630U - Fuel tank cap for rail transit vehicle - Google Patents
Fuel tank cap for rail transit vehicle Download PDFInfo
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- CN210101630U CN210101630U CN201920726328.XU CN201920726328U CN210101630U CN 210101630 U CN210101630 U CN 210101630U CN 201920726328 U CN201920726328 U CN 201920726328U CN 210101630 U CN210101630 U CN 210101630U
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Abstract
The utility model relates to a fuel tank cover for a rail transit vehicle, which comprises a first carbon fiber fabric/resin matrix composite layer, a second carbon fiber fabric/resin matrix composite layer and a foam layer arranged between the first carbon fiber fabric/resin matrix composite layer and the second carbon fiber fabric/resin matrix composite layer; the inner side surface of the third carbon fiber fabric/resin-based composite material layer is integrally connected with the outer side surface of the first carbon fiber fabric/resin-based composite material layer, and a fourth carbon fiber fabric/resin-based composite material layer is arranged on the outer side surface of the foam layer; and a plurality of mounting holes are formed in the third carbon fiber fabric/resin-based composite material layer. The utility model discloses a fuel tank cap quality is light, and the product size is stable, and the whole shaping of accessible combined process can avoid welding deformation in original steel material forming process.
Description
Technical Field
The utility model belongs to the rail transit equipment field relates to a fuel tank cap for rail transit vehicle.
Background
With the increasing requirements of low carbon and environmental protection in the rail transit industry, the light weight of vehicles is imperative. At present, the lightweight of parts is successfully realized on the vehicle interior decoration part by the carbon fiber composite material, and the force bearing part is still in the early stage of research and development and verification. The conventional fuel tank cap for rail transit vehicles is made of a steel material through a welding process.
Generally, the conventional steel fuel tank cap is made of Q345E steel with a thickness of 8mm, and in order to ensure the pressure requirement of the fuel tank cap, a steel reinforcing rib is welded on the fuel tank cap, which is not beneficial to the light weight of the component, and in combination, the conventional fuel tank cap has the following disadvantages:
(1) the whole fuel tank cover is made of steel materials, and the weight is heavy;
(2) the fuel tank cap is easy to generate welding deformation in the process of welding the steel reinforcing ribs, so that the deviation of the installation interface is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lightweight fuel tank cap for rail transit vehicle to prior art not enough.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the fuel tank cover for the rail transit vehicle is characterized by comprising a first carbon fiber fabric/resin-based composite material layer, a second carbon fiber fabric/resin-based composite material layer and a foam layer arranged between the first carbon fiber fabric/resin-based composite material layer and the second carbon fiber fabric/resin-based composite material layer; the first carbon fiber fabric/resin-based composite material layer is integrally connected with the outer side face of the foam layer, the first carbon fiber fabric/resin-based composite material layer is parallel to the second carbon fiber fabric/resin-based composite material layer, a fourth carbon fiber fabric/resin-based composite material layer is arranged on the outer side face of the foam layer, the fourth carbon fiber fabric/resin-based composite material layer extends towards the first carbon fiber fabric/resin-based composite material layer and is integrally connected with the first carbon fiber fabric/resin-based composite material layer, and the fourth carbon fiber fabric/resin-based composite material layer extends towards the second carbon fiber fabric/resin-based composite material layer and is integrally connected with the second carbon fiber fabric/resin-based composite; and a plurality of mounting holes are formed in the third carbon fiber fabric/resin-based composite material layer.
Further, the foam layer is made of PVC foam material.
Further, the carbon fiber fabric/resin-based composite material layer is mainly composed of the carbon fiber fabric and epoxy resin filled in gaps in the carbon fiber fabric.
In order to meet the requirement of shielding a magnetic field, a copper metal mesh is embedded in the second carbon fiber fabric/resin matrix composite material layer.
Further, the ratio of the thicknesses of the first carbon fiber fabric/resin-based composite material layer, the second carbon fiber fabric/resin-based composite material layer and the foam layer is (1-9): (1-9): (25-35).
Furthermore, the thickness of the third carbon fiber fabric/resin-based composite material layer is 1.5-3 times that of the first carbon fiber fabric/resin-based composite material layer, so that the fastening strength requirement required by the installation interface can be effectively ensured.
Further, the distance between the inner side surface and the outer side surface of the third carbon fiber fabric/resin-based composite material layer is 200-500 mm.
Further, the first carbon fiber fabric/resin-based composite material layer, the second carbon fiber fabric/resin-based composite material layer and the foam layer are rectangular.
Further, the minimum distance between the mounting hole and the outer side face of the third carbon fiber fabric/resin-based composite material layer is 20-80 mm.
First carbon fiber fabric/resin base combined material layer, second carbon fiber fabric/resin base combined material layer and set up in the foam layer "sandwich structure" between first carbon fiber fabric/resin base combined material layer, second carbon fiber fabric/resin base combined material layer, structural strength is high, combined material and foam layer's application can effectively reduce tank cap finished product weight, in addition, can select the functional foam material preparation foam layer that rigidity is high, further increase the rigidity of tank cap product, take place too big deformation during the avoidance force.
Compared with the prior art, the beneficial effects of the utility model are as follows:
(1) the weight is light, and the weight is reduced by more than 50% compared with the steel fuel tank cover.
(2) The steel material can be formed by one-step integral forming through a composite process, the product size is stable, welding deformation in the forming process of the original steel material is avoided, and the manufacture is simpler.
(3) The structure strength and the rigidity performance are good, and the steel oil tank has the capability of being pressed by 60kPa of the traditional steel oil tank.
(4) By pre-embedding the copper metal mesh, the requirement of magnetic field shielding can be met.
Drawings
Fig. 1 is a front view of a fuel tank cap for a rail transit vehicle according to a first embodiment of the present invention.
Fig. 2 is a plan view of a fuel tank cap for a rail transit vehicle according to a first embodiment of the present invention.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Fig. 4 is an enlarged view of portion i of fig. 3.
Fig. 5 is a partial sectional view of a first embodiment of the present invention for a rail transit vehicle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
As shown in fig. 1 to 4, the fuel tank cap for the rail transit vehicle comprises a first carbon fiber fabric/resin-based composite material layer 1, a second carbon fiber fabric/resin-based composite material layer 2 and a foam layer 4 arranged between the first carbon fiber fabric/resin-based composite material layer 1 and the second carbon fiber fabric/resin-based composite material layer 2; still include annular third carbon fabric/resin matrix composite material layer 5, the medial surface of third carbon fabric/resin matrix composite material layer 5 and the lateral surface body coupling of first carbon fabric/resin matrix composite material layer 1 are equipped with fourth carbon fabric/resin matrix composite material layer 6 on the lateral surface of foam layer 4, fourth carbon fabric/resin matrix composite material layer 6 extends and rather than body coupling to third carbon fabric/resin matrix composite material layer, fourth carbon fabric/resin matrix composite material layer extends and rather than body coupling to second carbon fabric/resin matrix composite material layer. The first carbon fiber fabric/resin-based composite material layer 1, the second carbon fiber fabric/resin-based composite material layer 2 and the foam layer 4 are rectangular. The third carbon fiber fabric/resin-based composite material layer is provided with a plurality of mounting holes 7 which are arranged in a rectangular shape, as shown in fig. 1. In fact, only two carbon fiber fabrics are needed for forming each carbon fiber fabric/resin matrix composite layer during specific composite forming.
The second carbon fiber fabric/resin-based composite material layer 2 and the fourth carbon fiber fabric/resin-based composite material layer 6 are connected through a fillet, and the fillet is close to R10; the third carbon fibre fabric/resin-based composite material layer 5 is connected to the fourth carbon fibre fabric/resin-based composite material layer 6 by means of rounded corners, which are close to R10.
The carbon fiber fabric/resin-based composite material layer mainly comprises carbon fiber fabrics and epoxy resin filled in gaps in the carbon fiber fabrics, and the proportion of the carbon fiber fabrics to the epoxy resin can be determined according to requirements.
And a copper metal mesh 3 is pre-embedded in the second carbon fiber fabric/resin-based composite material layer 2.
The thicknesses of the first carbon fiber fabric/resin-based composite material layer 1, the second carbon fiber fabric/resin-based composite material layer 2 and the foam layer 4 are 4mm, 4mm and 30mm respectively. The thickness of the third carbon fibre fabric/resin-based composite material layer 5 is 8 mm.
The minimum distance between the mounting hole 7 and the outer side surface of the third carbon fiber fabric/resin-based composite material layer is 25 mm.
Optionally, the fuel tank cap of the present application may be integrally formed by a vacuum import molding method, and further, a carbon fiber fabric a, a foam layer, and a carbon fiber fabric B may be sequentially laid in the mold from bottom to top, where the size of the area of the carbon fiber fabric a may be the same as the size of the area surrounded by the outer side surface of the third carbon fiber fabric/resin-based composite material layer, and the area of the carbon fiber fabric B may be slightly larger than the carbon fiber fabric a; and then vacuumizing by using vacuum equipment to keep negative pressure in the cavity of the laid material, injecting epoxy resin into the position of the carbon fiber fabric, molding, heating and curing to obtain a finished product of the fuel tank cap.
The utility model discloses an oil tank cap has been through finite element analysis software's operating mode simulation to successful trial-manufacturing is accomplished, and the trial-manufacturing product is verified through the loading, and the abnormal situation of free from occurrence. The result shows, the utility model discloses a quality of fuel tank cap alleviates by a wide margin, and compound molding preparation process size is stable, has reduced the error in the installation.
The above-mentioned embodiments are illustrative and should not be construed as limiting the scope of the invention, which is defined by the appended claims, and all modifications of the equivalent forms of the present invention which are obvious to those skilled in the art after reading the present invention.
Claims (7)
1. The fuel tank cover for the rail transit vehicle is characterized by comprising a first carbon fiber fabric/resin-based composite material layer (1), a second carbon fiber fabric/resin-based composite material layer (2) and a foam layer (4) arranged between the first carbon fiber fabric/resin-based composite material layer (1) and the second carbon fiber fabric/resin-based composite material layer (2); the composite material layer is characterized by further comprising a third carbon fiber fabric/resin-based composite material layer (5) integrally connected with the outer side face of the first carbon fiber fabric/resin-based composite material layer (1), the third carbon fiber fabric/resin-based composite material layer (5) is parallel to the first carbon fiber fabric/resin-based composite material layer (1), a fourth carbon fiber fabric/resin-based composite material layer (6) is arranged on the outer side face of the foam layer (4), the fourth carbon fiber fabric/resin-based composite material layer (6) extends towards the third carbon fiber fabric/resin-based composite material layer and is integrally connected with the third carbon fiber fabric/resin-based composite material layer, and the fourth carbon fiber fabric/resin-based composite material layer extends towards the second carbon fiber fabric/resin-based composite; and a plurality of mounting holes (7) are formed in the third carbon fiber fabric/resin-based composite material layer.
2. The tank cap according to claim 1, wherein the carbon fiber cloth/resin-based composite material layer is mainly composed of a carbon fiber cloth and an epoxy resin filled in a gap in the carbon fiber cloth.
3. The tank cap according to claim 1, characterized in that a copper metal mesh (3) is embedded in the second carbon fiber fabric/resin matrix composite layer (2).
4. The tank cap according to claim 1, characterized in that the ratio of the thicknesses of the first carbon fiber fabric/resin-based composite material layer (1), the second carbon fiber fabric/resin-based composite material layer (2) and the foam layer (4) is (1-9): (1-9): (25-35).
5. The tank cap according to claim 1, wherein the thickness of the third carbon fiber cloth/resin-based composite material layer is 1.5 to 3 times the thickness of the first carbon fiber cloth/resin-based composite material layer.
6. The tank cap according to any one of claims 1 to 4, characterized in that the first carbon fiber fabric/resin-based composite material layer (1), the second carbon fiber fabric/resin-based composite material layer (2) and the foam layer (4) are rectangular.
7. The tank cap according to any one of claims 1 to 4, characterized in that the mounting hole (7) has a minimum distance of 20-80mm from the outer side of the third carbon fiber fabric/resin-based composite material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920726328.XU CN210101630U (en) | 2019-05-21 | 2019-05-21 | Fuel tank cap for rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920726328.XU CN210101630U (en) | 2019-05-21 | 2019-05-21 | Fuel tank cap for rail transit vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210101630U true CN210101630U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920726328.XU Active CN210101630U (en) | 2019-05-21 | 2019-05-21 | Fuel tank cap for rail transit vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210101630U (en) |
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2019
- 2019-05-21 CN CN201920726328.XU patent/CN210101630U/en active Active
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