Equipment compartment end plate

Abstract

The utility model discloses an equipment compartment end plate which comprises a carbon fiber composite material plate and an aluminum alloy reinforcing rib, lap joints which are in contact with the upper surface of the carbon fiber composite material plate are arranged on the two sides of the aluminum alloy reinforcing rib respectively, and the lap joints are welded to the preset positions of the carbon fiber composite material plate through laser welding heads. The aluminum alloy reinforcing ribs are welded on the carbon fiber composite material plate, so that light weight can be realized on the premise of ensuring the rigidity of the end plate of the equipment compartment.

Description

Technical Field

[0001] The utility model relates to the technical field of rail vehicles, and particularly relates to an end plate of an equipment cabin. Background Art

[0002] The equipment cabin of the multiple unit train is an important component under the train, mainly responsible for protecting the equipment under the train and reducing the aerodynamic resistance. Due to the complex and diverse operation lines of the multiple unit train and the harsh and changeable environment under the train, the equipment cabin must have good structural characteristics to meet the strength requirements during its high-speed operation and ensure the normal function of the equipment under the train. The overall equipment cabin is a box-shaped structure, mainly composed of a bottom plate, a skirt plate, a bracket, an end plate and other structures.

[0003] The end plate of the equipment cabin is located in the front and rear areas of the bogie, which can effectively prevent the ballast from splashing during the high-speed operation of the train, avoid being damaged by the flying stones picked up during the vehicle running, and improve the flow field and noise environment in the bogie area. It is the main barrier for protecting the equipment under the train. The end plate usually adopts an integral forming structure to ensure high strength. The increase in the vehicle running speed will lead to an increase in the vehicle running resistance and noise. The end plate of the equipment cabin also plays a relatively key role in ensuring the smoothness of the whole vehicle structure and achieving resistance reduction and noise reduction.

[0004] The existing end plate of the equipment cabin is made of metal plates, and the commonly used materials are usually stainless steel plates or aluminum alloy plates. The forming process adopts stamping, and its reinforcing ribs are formed by stamping. However, the materials at the stamping deformation parts may be over-stretched to form defects, resulting in cracks or even breakage of the end plate under load.

[0005] Therefore, how to provide an end plate of the equipment cabin that reduces the weight on the basis of meeting the structural performance is a technical problem that those skilled in the art need to solve at present. Content of the Utility Model

[0006] The purpose of the utility model is to provide an end plate of an equipment cabin, which can achieve lightweight on the basis of meeting its structural performance.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An end plate of an equipment cabin, comprising: a carbon fiber composite material plate and aluminum alloy reinforcing ribs. The two sides of the aluminum alloy reinforcing ribs are respectively provided with joint heads in contact with the upper surface of the carbon fiber composite material plate, and the joint heads are welded to the preset positions of the carbon fiber composite material plate through laser welding heads.

[0009] Preferably, a plurality of the aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material plate, and the plurality of aluminum alloy reinforcing ribs are parallel to each other and evenly distributed on the carbon fiber composite material plate.

[0010] Preferably, the carbon fiber composite material plate is a rectangular plate, each aluminum alloy reinforcing rib is strip-shaped, the length extension direction of each aluminum alloy reinforcing rib is perpendicular to the long side of the carbon fiber composite material plate, a first connection hole is provided at the wide side of the carbon fiber composite material plate, a plurality of second connection holes are provided at equal intervals at the long side of the carbon fiber composite material plate, and both the first connection hole and the second connection hole are perpendicular to the carbon fiber composite material plate.

[0011] Preferably, the aluminum alloy reinforcing rib is a hat-shaped beam structure, the aluminum alloy reinforcing rib includes a U-shaped beam with a U-shaped cross-section and first and second connection sides integrally formed on both sides of the U-shaped beam, and both the first connection side and the second connection side are parallel to the upper surface of the carbon fiber composite material plate and are welded to the carbon fiber composite material plate.

[0012] Preferably, two aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material plate, and the two aluminum alloy reinforcing ribs are perpendicular to each other and are distributed in a cross shape on the carbon fiber composite material plate.

[0013] Preferably, a plurality of aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material plate, wherein a plurality of the aluminum alloy reinforcing ribs are parallel to each other and are distributed at equal intervals on the carbon fiber composite material plate, and the remaining plurality of aluminum alloy reinforcing ribs are distributed on both sides of the upper surface of the carbon fiber composite material plate. The two aluminum alloy reinforcing ribs on both sides are respectively distributed in a V shape, and the distance between the two aluminum alloy reinforcing ribs gradually increases in the direction from the middle to the side of the carbon fiber composite material plate.

[0014] Preferably, the carbon fiber composite material plate includes a carbon fiber prepreg unidirectional tape layer located at the core and short carbon fiber composite layers located on both sides.

[0015] Preferably, a surface strengthening layer is provided on one side of the lapping head facing the carbon fiber composite material plate, and the surface strengthening layer is a grid-shaped micro-texture strengthening layer.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] An equipment cabin end plate provided by the present invention includes: a carbon fiber composite material plate and aluminum alloy reinforcing ribs. Lapping heads in contact with the upper surface of the carbon fiber composite material plate are respectively provided on both sides of the aluminum alloy reinforcing ribs, and the lapping heads are welded to a preset position of the carbon fiber composite material plate through a laser welding head. By welding the aluminum alloy reinforcing ribs on the carbon fiber composite material plate, lightweight can be achieved on the premise of ensuring the stiffness of the equipment cabin end plate. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0019] Figure 1 Schematic diagram of the pre-deformation structure of an equipment cabin end plate provided by a specific embodiment of the present invention;

[0020] Figure 2 Schematic three-dimensional structure diagram of an equipment cabin end plate provided by another specific embodiment of the present invention;

[0021] Figure 3 is Figure 2 the top view of;

[0022] Figure 4 Schematic three-dimensional structure diagram of an equipment cabin end plate provided by another specific embodiment of the present invention;

[0023] Figure 5 is Figure 4 the top view of;

[0024] Figure 6 Schematic three-dimensional structure diagram of an equipment cabin end plate provided by another specific embodiment of the present invention;

[0025] Figure 7 is Figure 6 the top view of;

[0026] Figure 8 Schematic diagram of the structure of a tooling platform for an equipment cabin end plate provided by a specific embodiment of the present invention.

[0027] The reference numerals are as follows:

[0028] 100 is the equipment cabin end plate, 101 is the carbon fiber composite material plate, 1011 is the first connection hole, 1012 is the second connection hole, 102 is the aluminum alloy reinforcing rib, 1021 is the U-shaped beam, 1022 is the first connection side, 1023 is the second connection side;

[0029] 10 is the bottom plate;

[0030] 20 is the first pressing assembly, 21 is the pressing block, 211 is the kidney-shaped hole, 22 is the threaded adjusting member, 23 is the pressing strip;

[0031] 30 is the second pressing assembly, 31 is the pressing head, 32 is the fixed column, 33 is the lifting driving member;

[0032] 40 is a welding device;

[0033] 50 is a pressure sensor. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1 , a device cabin end plate 100 provided by an embodiment of the present invention includes: a carbon fiber composite material plate 101 and an aluminum alloy reinforcing rib 102. Both sides of the aluminum alloy reinforcing rib 102 are respectively provided with butt joints that contact the upper surface of the carbon fiber composite material plate 101. The butt joints are welded to a preset position of the carbon fiber composite material plate 101 through a laser welding head. The preset position of the carbon fiber composite material plate 101 is its weak position. Since the sizes of the carbon fiber composite material plates 101 are different, their weak positions are also different, that is, the welding positions of the aluminum alloy reinforcing ribs 102 are also different. Specifically, the welding positions of the aluminum alloy reinforcing ribs 102 need to be determined in advance according to the actual carbon fiber composite material plates 101. By welding the aluminum alloy reinforcing ribs 102 on the carbon fiber composite material plates 101, lightweighting can be achieved while ensuring the stiffness of the device cabin end plate 100.

[0036] Regarding the structure of the carbon fiber composite material plate 101, in a specific embodiment, it is preferably a sandwich core structure. The overall thickness of the plate is 4 mm. The core is a carbon fiber prepreg unidirectional tape ply, and both sides are short carbon fiber composite layers. The carbon fiber prepreg unidirectional tape ply is located between the two short carbon fiber composite layers. The overall resin content of the composite material is 40%. For example, the carbon fiber grades include T300, T700, T800, M40, M60, etc.; the ply design angles of the carbon fiber prepreg include 0°, 45°, 90°, etc.; or the fibers can also be in a woven form; the resin content can vary (for example, 20% - 70%), and the type of resin can also be a certain variety in thermoplastic resins (such as PA6, PA66, PEEK, PPS, etc.); common long fiber or short fiber reinforced composite material plates (i.e., non-sandwich core structures) can also be used as long as the resin content is appropriate and the flatness of the plate meets the standards. In addition, other resin-based composite materials with reinforcing fibers (such as glass fiber, basalt fiber, high-density polyethylene fiber, etc.) can also be selected.

[0037] Regarding the structure of the aluminum alloy reinforcing rib 102, in a specific embodiment, as Figure 2 and Figure 3 shown, the aluminum alloy reinforcing rib 102 is preferably a hat-shaped beam structure. For example, aluminum alloys of grades such as 6063, 6082, 5083, 2011, 7075, etc. can be selected for manufacturing. Specifically, aluminum alloy profiles can be selected for manufacturing, and solid profiles, semi-hollow profiles, and hollow profiles can be selected. Solid profiles are generally angular, grooved, I-beams, etc. Even the cross-sectional dimensions of the hat-shaped beam can be different. In addition, according to the size of the carbon fiber composite plate 101, a section of aluminum alloy strip can be cut and welded, which can also achieve a certain structural strengthening effect. For the aluminum alloy reinforcing rib 102 of the hat-shaped beam structure, it specifically includes a U-shaped beam 1021 with a U-shaped cross-section and a first connecting edge 1022 and a second connecting edge 1023 integrally formed on both sides of the U-shaped beam 1021. That is, the U-shaped beam 1021, the first connecting edge 1022, and the second connecting edge 1023 are an integral structure. Before welding, the notch of the U-shaped beam 1021 corresponds to the upper surface of the carbon fiber composite plate 101, and both the first connecting edge 1022 and the second connecting edge 1023 are parallel to the upper surface of the carbon fiber composite plate 101 and are welded to the carbon fiber composite plate 101. Since the first connecting edge 1022 and the second connecting edge 1023 can increase the contact area between the aluminum alloy reinforcing rib 102 and the carbon fiber composite plate 101, it is beneficial to improve the welding stability of the two. The U-shaped beam 1021 can be hollow or solid.

[0038] In some embodiments, multiple aluminum alloy reinforcing ribs 102 are welded to the upper surface of the carbon fiber composite plate 101. The number of aluminum alloy reinforcing ribs 102 can be selected according to the size of the carbon fiber composite plate 101. The larger its size, the more the number of aluminum alloy reinforcing ribs 102. Among them, multiple aluminum alloy reinforcing ribs 102 are parallel to each other and evenly spaced on the carbon fiber composite plate 101. It should be noted that the evenly spaced parallel distribution of the aluminum alloy reinforcing ribs 102 is only a preferred arrangement method. Specifically, the welding positions of the aluminum alloy reinforcing ribs 102 can also be determined according to actual needs as long as they can strengthen the carbon fiber composite plate 101.

[0039] In some embodiments, as Figure 3As shown, the carbon fiber composite material plate 101 is a rectangular plate. Each aluminum alloy reinforcing rib 102 is strip-shaped, and the length extension direction of each aluminum alloy reinforcing rib 102 is perpendicular to the long side of the carbon fiber composite material plate 101. A first connection hole 1011 is provided at the wide side of the carbon fiber composite material plate. For example, a first connection hole 1011 can be provided in the middle of the wide side of the carbon fiber composite material plate. A plurality of second connection holes 1012 with equal spacing are provided at the long side of the carbon fiber composite material plate. For example, three second connection holes 1012 can be provided at the long side of the carbon fiber composite material plate. Both the first connection hole 1011 and the second connection hole 1012 are perpendicular to the carbon fiber composite material plate 101. The carbon fiber composite material plate 101 can be fixed on the equipment cabin by fasteners such as rivets or screws passing through the first connection hole 1011 and the second connection hole 1012.

[0040] In some embodiments, as Figure 4 and Figure 5 shown, two aluminum alloy reinforcing ribs 102 are welded on the upper surface of the carbon fiber composite material plate 101. The two aluminum alloy reinforcing ribs 102 are perpendicular to each other and are distributed on the carbon fiber composite material plate 101 in a cross shape. For example, the carbon fiber composite material plate 101 can be selected as a rectangular plate. The first aluminum alloy reinforcing rib 102 is perpendicular to the long side of the carbon fiber composite material plate 101, and the second aluminum alloy reinforcing rib 102 is perpendicular to the wide side of the carbon fiber composite material plate 101. This aluminum alloy reinforcing rib 102 can be of a two-section structure, and these two sections are respectively located on both sides of the first aluminum alloy reinforcing rib 102. Of course, the first aluminum alloy reinforcing rib 102 can also be of a two-section structure. By distributing the two aluminum alloy reinforcing ribs 102 in a cross shape, it is beneficial to improve the strength of the carbon fiber composite material plate 101 in two mutually perpendicular directions. In addition, less material is used, which is beneficial to reducing the weight of the end plate of the equipment cabin.

[0041] In some embodiments, as Figure 6 and Figure 7 shown, a plurality of aluminum alloy reinforcing ribs 102 are welded on the upper surface of the carbon fiber composite material plate 101. The plurality of aluminum alloy reinforcing ribs 102 are divided into two parts. One part has a plurality of aluminum alloy reinforcing ribs 102, and the aluminum alloy reinforcing ribs 102 in this part are parallel to each other and are distributed on the carbon fiber composite material plate 101 at equal intervals; the remaining plurality of aluminum alloy reinforcing ribs 102 are the other part, and the plurality of aluminum alloy reinforcing ribs 102 in this part are distributed on both sides of the upper surface of the carbon fiber composite material plate 101. The two aluminum alloy reinforcing ribs 102 on both sides are respectively distributed in a V shape, and the distance between the two aluminum alloy reinforcing ribs 102 gradually increases from the middle to the side of the carbon fiber composite material plate 101. Specifically, as Figure 6 and Figure 7As shown in the figure, seven aluminum alloy reinforcing ribs 102 are welded to the upper surface of the carbon fiber composite material plate 101. Among them, three aluminum alloy reinforcing ribs 102 are parallel to each other and evenly distributed in the middle of the upper surface of the carbon fiber composite material plate 101. These three aluminum alloy reinforcing ribs 102 are all perpendicular to the long side of the carbon fiber composite material plate 101. The other four aluminum alloy reinforcing ribs 102 are located on both sides of the upper surface of the carbon fiber composite material plate 101. The extending directions of the four aluminum alloy reinforcing ribs 102 on both sides are along the bisecting lines of the four corners of the carbon fiber composite material plate 101. Through the above distribution method of the aluminum alloy reinforcing ribs 102, the strength of the middle and both sides of the carbon fiber composite material plate 101 can be effectively improved, which is beneficial to improving its service life.

[0042] In some embodiments, before welding the aluminum alloy reinforcing rib 102 and the carbon fiber composite material plate 101, the surface of the aluminum alloy reinforcing rib 102 is cleaned and pretreated, and the surface of the carbon fiber composite material plate 101 is cleaned. For example, it can be cleaned by dipping ethanol and wiping to remove the dust and organic substances adhered to the surface. One side of the lap joint facing the carbon fiber composite material plate 101 is provided with a surface strengthening layer, and the welding strength between the aluminum alloy reinforcing rib 102 and the carbon fiber composite material plate 101 can be improved through the surface strengthening layer. The surface strengthening layer is a grid-like micro-texture strengthening layer, which can be specifically formed by laser micro-texturing, and optional methods such as grid-like micro-texturing, partial filling micro-texturing, and full filling micro-texturing can be adopted.

[0043] When welding the end plate of the equipment cabin, first place the carbon fiber composite material plate 101 on the welding platform and press it tightly through the first pressing assembly 20. Please refer to Figure 8 , the welding platform includes a bottom plate 10, a first pressing assembly 20, a second pressing assembly 30 and a laser welding device 40. The bottom plate 10 is used to support the carbon fiber composite material plate 101. The first pressing assembly 20 includes a pressing block 21 and a threaded adjusting member 22. One end of the pressing block 21 is a fixed end, and the other end is a pressing end. The fixed end is connected to the bottom plate 10. A preset gap is provided between the body of the pressing block 21 and the bottom plate 10. A through hole is provided on the body of the pressing block 21. The pressing block 21 is an L-shaped pressing block. The vertical plate of the L-shaped pressing block is fixedly connected to the bottom plate 10, and the through hole is provided on the horizontal plate of the L-shaped pressing block. The through hole is an oblong hole 211 extending along the length direction of the horizontal plate. The lower end of the threaded adjusting member 22 passes through the through hole and is connected to the bottom plate 10. The pressing end is used to press tightly on the plate when the threaded adjusting member 22 is screwed downwards. When the threaded adjusting member 22 is screwed downwards, the pressing end of the pressing block 21 will generate a downward movement, so that the pressing end can press tightly on the plate. A pressure strip 23 is provided at the lower end of the pressing end. The length extending direction of the pressure strip 23 is perpendicular to the reinforcing rib, and multiple reinforcing ribs can be pressed tightly through the pressure strip 23.

[0044] Then, place the aluminum alloy reinforcing rib 102 on the carbon fiber composite material plate 101 and press it tightly through the second pressing assembly 30. The second pressing assembly 30 includes a pressing head 31, two fixed columns 32, and two lifting driving members 33. The two sides of the pressing head 31 are respectively connected to the two fixed columns 32 in a liftable manner. The two fixed columns 32 mainly play a guiding role for the pressing head 31, and the lower ends of the fixed columns 32 are connected to the bottom plate 10. The two lifting driving members 33 are respectively connected above the two ends of the pressing head 31. When it is necessary to press the reinforcing rib tightly, the two lifting driving members 33 drive the pressing head 31 to descend; after welding is completed, or after welding is completed and maintained for a period of time, the lifting driving members 33 drive the pressing head 31 to rise to release the reinforcing rib. The lifting driving member 33 is preferably an electric push rod. In addition, a pneumatic push rod or a hydraulic push rod can also be selected, as long as the lifting of the pressing head 31 can be achieved.

[0045] After the clamping is completed, start the laser welding device 40 to weld along the weld between the aluminum alloy reinforcing rib 102 and the carbon fiber composite material plate 101. The welding head of the laser welding device 40 is installed on the end shaft of the robot. The position and angle of the welding head can be adjusted through the robot, and the welding head is automatically controlled to weld along a preset trajectory through the control program pre-stored in the robot. The process parameters of the laser welding device 40 are as follows: laser power 300 - 1000W, speed 0.2 - 0.8m / min, defocus amount +5 - +20mm, pressure 50 - 600N, and the pressure will be adjusted during the welding process. Since the deformation amounts generated when welding the reinforcing ribs at different positions are different, when welding the reinforcing ribs at different positions, the pressure of the second pressing assembly 30 at the corresponding position can be adjusted. When it is necessary to weld multiple aluminum alloy reinforcing ribs 102, the sequence of the aluminum alloy reinforcing ribs 102 can be determined in advance. For example, for the equipment cabin end plate 100 with three reinforcing ribs arranged on the plate, the reinforcing ribs are respectively recorded as the first reinforcing rib, the second reinforcing rib, and the third reinforcing rib from left to right. The welding device 40 welds a total of six passes, and the six welding sequences are as follows: the right side of the first reinforcing rib, the left side of the first reinforcing rib, the right side of the second reinforcing rib, the left side of the second reinforcing rib, the left side of the third reinforcing rib, the right side of the third reinforcing rib. During the welding of the six welds, the pressures of the second pressing assembly 30 are respectively controlled at about 100N, 300N, 500N, 300N, 300N, and 300N in sequence, and the pressure fluctuation during the welding process does not exceed ±5%. Through this welding sequence, the welding deformation amount can be effectively reduced.

[0046] After welding is completed, a constant pressure is applied to the reinforcing rib by the second pressing assembly 30 and maintained for a preset duration. Since the end plate 100 of the equipment cabin will deform under the condition of thermal expansion and contraction after welding is completed, by controlling the constant pressure applied by the second pressing assembly 30, deformation of the end plate 100 of the equipment cabin can be avoided, which is beneficial to ensuring the flatness of the end plate 100 of the equipment cabin. In order to accurately detect the pressure of the pressing head 31, a pressure sensor 50 can be provided between the electric push rod and the pressing head 31. The pressure sensor 50 can detect the pressure of the pressing head 31 in real time and send it to the electric control system. The electric control system can control the pressing head 31 to apply a constant pressure to the aluminum alloy reinforcing rib 102, thereby reducing the welding deformation amount after welding.

[0047] Before welding, the surface of the carbon fiber composite material plate 101 needs to be cleaned. For example, it can be cleaned by dipping and wiping with ethanol to remove dust and organic substances adhered to the surface. The welding surface of the aluminum alloy reinforcing rib 102 is cleaned and surface strengthened. The cleaning is to put the profile into ethanol and ultrasonically clean it to remove surface dust and oil. After drying, pretreatment is carried out. Here, the method of laser micro-texturing is adopted, and optional methods include grid micro-texturing, partial filling micro-texturing, full filling micro-texturing, etc. For the grid micro-texture, the process parameter range is: laser power 30 - 70W, pulse frequency 40 - 80kHz, grid spacing 0.1 - 0.4mm, scanning speed 1000 - 3000mm / s, and scanning times 5 - 20 times. In addition, other surface strengthening treatment methods can also be adopted (for example, anodization, micro-arc oxidation, silanization, micro-texturing + anodization, micro-texturing + silanization, etc.).

[0048] To ensure the welding quality, a downward bending pre-deformation can be applied to both ends of the carbon fiber composite material plate 101 by the first pressing assembly 20 to resist the warping deformation generated at both ends of the carbon fiber composite material plate 101 during welding. The pre-deformation amount needs to be preset according to the structures of the carbon fiber composite material plate 101 and the aluminum alloy reinforcing rib 102; a pre-deformation adapted to the carbon fiber composite material plate 101 is applied to the reinforcing rib by the second pressing assembly 30. When pressing, the electric control system controls the electric push rod to press the pressing head 31 onto the aluminum alloy reinforcing rib 102, and then, according to the pre-calculated welding deformation amount, controls the electric push rod to press down in place to complete the corresponding pre-deformation, thereby achieving the effect of reducing the deformation amount during the welding process.

[0049] It should be noted that in this specification, relational terms such as first and second 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.

[0050] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0051] The above has introduced in detail an equipment cabin end plate provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. An equipment compartment end plate, characterized in that: include: A carbon fiber composite material plate and an aluminum alloy reinforcement rib, wherein two sides of the aluminum alloy reinforcement rib are respectively provided with lap joints in contact with the upper surface of the carbon fiber composite material plate, and the lap joints are welded to the preset position of the carbon fiber composite material plate by a laser welding head.

2. The equipment compartment end plate according to claim 1, characterized in that: A plurality of aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material plate, and the plurality of aluminum alloy reinforcing ribs are parallel to each other and are distributed on the carbon fiber composite material plate at equal intervals.

3. The equipment compartment end plate according to claim 2, characterized in that: The carbon fiber composite material plate is a rectangular plate, and each of the aluminum alloy reinforcement ribs is in the shape of a long strip. The length extension direction of each of the aluminum alloy reinforcement ribs is perpendicular to the long side of the carbon fiber composite material plate. A first connecting hole is provided at the wide side of the carbon fiber composite material plate, and a plurality of second connecting holes distributed at equal intervals are provided at the long side of the carbon fiber composite material plate. The first connecting hole and the second connecting hole are both perpendicular to the carbon fiber composite material plate.

4. The equipment compartment end plate according to claim 1, characterized in that: The aluminum alloy reinforcement rib is a hat-type beam structure, and the aluminum alloy reinforcement rib includes a U-shaped beam with a U-shaped cross-section and a first connecting edge and a second connecting edge integrally formed on both sides of the U-shaped beam, and the first connecting edge and the second connecting edge are both parallel to the upper surface of the carbon fiber composite material panel and welded to the carbon fiber composite material panel.

5. The equipment compartment end plate according to claim 1, characterized in that: Two aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material plate, and the two aluminum alloy reinforcing ribs are perpendicular to each other and distributed in a cross shape on the carbon fiber composite material plate.

6. The equipment compartment end plate according to claim 1, characterized in that: A plurality of aluminum alloy reinforcing ribs are welded to the upper surface of the carbon fiber composite material panel, wherein the plurality of aluminum alloy reinforcing ribs are parallel to each other and are evenly spaced on the carbon fiber composite material panel, and the remaining plurality of aluminum alloy reinforcing ribs are distributed on both sides of the upper surface of the carbon fiber composite material panel, the two aluminum alloy reinforcing ribs on both sides are respectively distributed in an eight-shaped shape, and the spacing between the two aluminum alloy reinforcing ribs gradually increases from the middle to the side of the carbon fiber composite material panel.

7. The equipment compartment end plate according to claim 1, characterized in that: The carbon fiber composite material plate comprises a carbon fiber prepreg unidirectional tape ply located at a core and short carbon fiber composite layers located at two sides.

8. The equipment compartment end plate according to claim 1, characterized in that: A surface strengthening layer is provided on a side of the lap joint facing the carbon fiber composite material plate, and the surface strengthening layer is a grid-shaped micro-texture strengthening layer.

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