Skirt structure and rail vehicle

Abstract

The application discloses a skirt plate structure and a rail vehicle, and relates to the technical field of rail vehicles.The skirt plate structure comprises a skirt plate body and a mounting seat.The skirt plate body is an integrally-formed profile structure, the profile cross section of the skirt plate body has at least one closed cavity, and the skirt plate body is provided with a mounting interface for mounting accessories.The mounting seat is connected with the skirt plate body, and is used for mounting the skirt plate body on a side beam of a vehicle body bottom frame.The skirt plate structure provided by the application can effectively reduce the types of components and the overall weight, greatly improve the integration degree of the skirt plate structure, and ensure the structural strength and stability of the skirt plate structure during vehicle operation.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and more specifically, to a skirt structure and a rail vehicle. Background Technology

[0002] In the area under the equipment of rail vehicles, a skirt structure is usually installed. This skirt structure serves both to protect the equipment under the vehicle and to improve the vehicle's aerodynamic performance and enhance its aesthetic appearance.

[0003] Traditional skirting structures are mostly assembled from individual profiles or sheet metal parts. To meet the installation, opening, and locking requirements of different locations (such as moving and fixed areas), it is usually necessary to design and manufacture various skirting bodies and corresponding mounting bases of different specifications. This results in a wide variety of component specifications, which not only increases manufacturing and logistics costs but also hinders later replacement and maintenance. At the same time, traditional skirting structures have a low degree of integration. Their sealing structure, lock mounting position, and support structure often need to be completed in different processing steps or additional components, resulting in a relatively loose overall structure, complex assembly process, and heavy overall weight, making it difficult to achieve a balance between lightweight and structural strength.

[0004] In addition, traditional skirt panels often suffer from problems such as insufficient ease of operation and unreasonable lock arrangement when opening or maintaining them.

[0005] Therefore, how to achieve functional integration while ensuring both lightweight and strength in the skirt structure has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a skirt structure that can achieve functional integration while ensuring both lightweight and strength of the skirt structure.

[0007] Another objective of this application is to provide a rail vehicle having the aforementioned skirt structure.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] A skirt structure, comprising:

[0010] The skirt board body is an integrally formed profile structure. The profile cross-section of the skirt board body has at least one closed cavity, and the skirt board body is provided with an installation interface for installing accessories.

[0011] Mounting bracket, which is connected to the skirt body, is used to mount the skirt body onto the side beam of the vehicle body frame.

[0012] Optionally, in the above-described skirt structure, the mounting interface includes at least one of a C-shaped groove and a pivot mounting hole.

[0013] Optionally, in the above-described skirt structure, the main body of the skirt is a movable skirt body, which is hinged to the mounting base via a pivot, and the pivot is installed in the pivot mounting hole.

[0014] Optionally, the above-mentioned skirt structure also includes a telescopic support member, one end of which is connected to the mounting base, and the other end of which is connected to the movable skirt body.

[0015] Optionally, the above-mentioned skirt structure further includes a connecting seat and a connecting member. The main body of the movable skirt is connected to the connecting seat through the connecting member, the telescopic support is connected to the connecting seat, and the connecting member is located in the C-shaped groove.

[0016] Optionally, in the above-described skirt structure, the telescopic support includes a gas spring or a hydraulic rod.

[0017] Optionally, the above-described skirt structure further includes one or more reinforcing seats, which are used to rotatably connect the main body of the movable skirt to the side beam of the vehicle body frame.

[0018] Optionally, the above-described skirt structure further includes a skirt lock, which is used to lock the movable skirt body to the mounting base, and at least one of the closed cavities is a rectangular cavity for installing the skirt lock.

[0019] Optionally, in the above-described skirt structure, the main body of the skirt is a fixed skirt body, which is fixedly connected to the mounting base by a fastener, and the fastener is located within the C-shaped groove.

[0020] A rail vehicle includes a chassis side beam and a skirt structure as described in any of the preceding claims, wherein the skirt body is mounted on the chassis side beam via the mounting base.

[0021] Optionally, the above-mentioned rail vehicle also includes a bogie, wherein the end of the skirt body near the bogie is an arc-shaped structure.

[0022] The skirt structure provided in this application improves the structural strength of the skirt body by setting the main body of the skirt as a one-piece molded profile structure and setting at least one closed cavity in its profile cross-section. Simultaneously, the skirt body is provided with mounting interfaces for installing accessories, and the skirt body can be mounted on the side beam of the vehicle body frame via mounting seats. As can be seen from the above example, the skirt structure provided in this application, through its one-piece molded profile structure, can be flexibly processed and adapted on the same profile basis according to actual working conditions, thereby effectively reducing the variety of specifications of the skirt body and corresponding mounting seats, and lowering manufacturing and logistics costs. At the same time, the closed cavity in the cross-section can significantly reduce the overall weight of the skirt while ensuring structural strength, effectively addressing the problem that traditional assembly structures struggle to balance lightweighting and structural strength. Furthermore, the installation interfaces directly integrated into the main body of the skirt panel eliminate the need for accessories such as seals, supports, or locks to be distributed on additional components. Combined with the connection between the mounting base and the side beam of the vehicle body frame, the assembly process is simplified, and the functions are integrated. This effectively reduces the types of components and the overall weight while significantly improving the integration level of the skirt panel structure, ensuring the structural strength and stability of the skirt panel structure during vehicle operation.

[0023] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are those explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a cross-sectional schematic diagram of the skirt structure provided in Embodiment 1 of this application;

[0026] Figure 2 This is a cross-sectional schematic diagram of the skirt structure provided in Embodiment 2 of this application;

[0027] Figure 3 An installation layout diagram of the main body of the movable skirt panel provided in an embodiment of this application;

[0028] Figure 4 A schematic diagram illustrating the installation and opening of the movable skirt panel body provided in an embodiment of this application;

[0029] Figure 5 This is an assembly diagram of the movable skirt body and the telescopic support provided in an embodiment of this application;

[0030] Figure 6 This is an assembly diagram of the telescopic support and connecting seat provided in the embodiments of this application;

[0031] Figure 7 This is an assembly diagram of the reinforcing seat provided in an embodiment of this application;

[0032] Figure 8 An installation layout diagram of the fixed skirt board body provided in the embodiments of this application;

[0033] Figure 9 This is a schematic diagram of the installation of the fixed skirt panel body provided in an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the skirt structure arrangement provided in an embodiment of this application;

[0035] The annotations in the attached figures are explained as follows:

[0036] Among them, 10, skirt panel body; 11, closed cavity; 111, rectangular cavity; 12, mounting interface; 121, C-shaped slide; 122, pivot mounting hole; 13, movable skirt panel body; 14, fixed skirt panel body; 20, mounting base; 30, telescopic support; 40, connecting base; 50, connecting piece; 60, skirt panel lock; 70, fixing piece; 80, vehicle body underframe side beam; 90, arc-shaped structure; 100, reinforcing base. Detailed Implementation

[0037] The core of this application is to provide a skirt structure that can achieve functional integration while ensuring both lightweight and strength.

[0038] Another key aspect of this application is to provide a rail vehicle with the aforementioned skirt structure.

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the structural design of rail vehicles, the skirt structure of the equipment area under the vehicle is a crucial component. This structure not only needs to withstand wind and rain erosion and the impact of gravel to protect the internal electrical equipment and piping systems, but also needs to reduce air resistance and aerodynamic noise during high-speed operation by optimizing the external surface shape. Furthermore, as an important display surface of the vehicle's appearance, the harmony between the skirt's shape and the vehicle's outline directly determines the overall visual aesthetics of the vehicle.

[0041] However, in existing technologies, skirt structures mostly adopt a split design approach. Specifically, aluminum alloy profiles or sheet metal parts of different specifications are often cut and then assembled into the final skirt components through welding, bolting, and other methods. Due to the diverse types of equipment under vehicles and varying maintenance frequencies, the undercarriage area needs to be divided into movable skirt areas and fixed skirt areas. To accommodate these two different working states, traditional solutions must design and manufacture multiple skirt components with different mounting interfaces, latches, or pivot structures. This "one area, one design" approach directly leads to a complex variety of skirt component specifications and mating parts, significantly increasing mold costs and raw material preparation difficulties, placing a heavy burden on subsequent warehousing management and on-site assembly, and significantly raising the overall lifecycle maintenance costs.

[0042] Meanwhile, the installation interfaces for functional accessories such as sealing strips, lock mounting bases, and support rods of traditional skirt panels are not integrated into the main structure of the profile. They typically require secondary processing, such as welding studs, drilling mounting holes, or riveting additional brackets, for fixation. This "dispersed processing, post-integration" model not only results in a large number of components but also makes individual fixing points prone to localized stress concentration due to a lack of structural coordination. Furthermore, the cumulative tolerances caused by multiple processes further prolong the assembly process; and due to limitations in the cross-section and wall thickness of conventional profiles, to meet the required wind pressure resistance, the plate material is often passively thickened or additional reinforcing ribs are added, resulting in a higher overall weight for the skirt panel.

[0043] In addition, traditional skirt panels often suffer from problems such as insufficient ease of operation and unreasonable lock arrangement when opening or maintaining them.

[0044] To address this, this application discloses a skirt structure, including a skirt body 10 and a mounting base 20. Through an integrally formed profile structure, it is possible to flexibly adapt and process the same profile according to actual working conditions, thereby effectively reducing the variety of specifications for the skirt body 10 and the corresponding mounting base 20, and lowering manufacturing and logistics costs. Simultaneously, the closed cavity 11 on the cross-section significantly reduces the overall weight of the skirt while ensuring structural strength, effectively addressing the problem that traditional assembly structures struggle to balance lightweighting and structural strength. Furthermore, the mounting interface 12 directly integrated on the skirt body 10 eliminates the need for accessories such as seals, supports, or locks to be distributed across additional components. Combined with the connection between the mounting base 20 and the vehicle chassis side beam 80, this simplifies the assembly process and achieves functional integration. This effectively reduces the variety of components and overall weight while significantly improving the integration level of the skirt structure, ensuring the structural strength and stability of the skirt structure during vehicle operation.

[0045] The following will combine Figures 1 to 10 The common skirt structure in the embodiments of this application will be explained and described in detail.

[0046] Among them, such as Figure 1 and Figure 2 As shown, the skirt body 10 can adopt a one-piece molded profile structure, and its profile cross-section can have at least one closed cavity 11. The skirt body 10 also has an installation interface 12 for mounting accessories. Simultaneously, the mounting base 20 is connected to the skirt body 10 to mount the skirt body 10 onto the vehicle body underframe side beam 80. Specifically, the skirt body 10 adopts a one-piece molded profile structure, such as, but not limited to, an aluminum alloy extruded part. Because it is a one-piece molded structure, it eliminates the need to prepare multiple profiles with different cross-sections as in traditional solutions when meeting different functional requirements. Instead, it allows for adaptive processing based on the same profile, effectively reducing the variety of specifications for the skirt body 10 and the corresponding mounting base 20. Furthermore, the profile cross-section of the skirt body 10 has at least one closed cavity 11, i.e., as shown in the diagram. Figure 2 As shown, the closed cavity 11 can be one, two, three or more, such as... Figure 1 As shown, the presence of the closed cavity 11 not only significantly reduces the overall weight while ensuring the structural strength of the skirt body 10, effectively addressing the problem that traditional assembly structures struggle to balance lightweighting and structural strength, but the closed cavity 11 itself can also serve as a storage space or mounting carrier for components such as the skirt lock 60. Furthermore, the mounting interface 12 on the skirt body 10 is used to integrate accessories (such as seals, connectors 50, or fasteners 70), eliminating the need for these accessories to be scattered across additional components. This allows them to connect with the mounting base 20 and the vehicle chassis side beam 80, simplifying the assembly process and achieving functional integration.

[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, the mounting interface 12 may include at least one of a C-shaped groove 121 and a shaft mounting hole 122, i.e., as Figure 1 As shown, the profile cross-section of the skirt panel body 10 can simultaneously be provided with a C-shaped groove 121 and a pivot mounting hole 122. In this case, the skirt panel body 10 can be installed with the telescopic support 30 via the C-shaped groove 121, or a pivot can be installed via the pivot mounting hole 122 to achieve movable opening; of course, as... Figure 2 As shown, the skirt panel body 10 can also have only a C-shaped groove 121 on its profile cross-section, in which case the skirt panel body 10 can be fixedly installed through the C-shaped groove 121; in addition, the pivot mounting hole 122 can also be set independently, so that a pivot can be installed through the pivot mounting hole 122 to realize the movable opening. The specific setting method can be selected according to actual needs, for example, Figure 2 As shown, when the skirt structure is a fixed structure, the profile section of the skirt body 10 may only have a C-shaped groove 121. In this case, the skirt body 10 can be fixedly connected to the mounting base 20 through the fixing member 70 in the C-shaped groove 121; or, as Figure 1 As shown, when the skirt structure is a movable structure, the profile section of the skirt body 10 can be simultaneously provided with a C-shaped groove 121 and a pivot mounting hole 122. In this case, the skirt body 10 can be installed with the telescopic support 30 via the C-shaped groove 121, or a pivot can be installed via the pivot mounting hole 122 to achieve movable opening, thereby facilitating the maintenance of the equipment below the rail vehicle. Specifically, as... Figure 5 and Figure 9 As shown, the opening of the C-shaped slide 121 faces the mounting base 20, that is, away from the back of the skirt panel body 10, thus providing a track-type sliding fit installation space for components such as the mounting base 20, connecting base 40, and limiting rubber strip. One, two, or more C-shaped slides 121 can be used to accommodate the installation of more accessories. Simultaneously, the C-shaped slide 121 can also achieve self-locking guidance through its internal C-shaped structure, allowing the fixing member 70 or connecting member 50 to be reliably positioned within the C-shaped slide 121.

[0048] In some embodiments, such as Figure 5 and Figure 9As shown, the outer contour of the skirt body 10 conforms to the outer contour of the rail vehicle, allowing its outer surface to smoothly transition with the side wall of the carriage after it is installed on the underframe side beam 80. This enhances the overall aesthetics of the vehicle and reduces wind resistance during operation. Furthermore, the skirt body 10 can be made of aluminum alloy, formed in one piece through extrusion molding, giving it advantages such as light weight, high strength, and good corrosion resistance. Of course, the skirt body 10 can also be made of other metal or non-metal profiles with similar properties, such as stainless steel, titanium alloy, engineering plastics, or composite materials; this is not limited to these methods here.

[0049] In some embodiments, such as Figure 1 and Figures 3 to 5 As shown, the main body 10 of the skirt panel can be a movable skirt panel 13, and the movable skirt panel 13 is hinged to the mounting base 20 via a pivot, with the pivot installed in the pivot mounting hole 122. When operators need to inspect the equipment under the vehicle, they can drive the movable skirt panel 13 to rotate upwards around the pivot and open, facilitating convenient access to the under-vehicle space for inspection. Specifically, the pivot mounting hole 122 on the movable skirt panel 13 is a through-hole structure penetrating the cross-section of the skirt panel 10 profile. The pivot passes through this pivot mounting hole 122, and both ends of the pivot are hinged to the corresponding mounting base 20. In actual assembly, the upper side of the movable skirt panel 13 is hinged to the mounting base 20 via the pivot, while the other side is locked by the skirt panel lock 60. When the skirt panel lock 60 is unlocked, the movable skirt panel 13 can rotate around the axis of the pivot, thereby opening. The rotating shaft can be a cylindrical metal shaft, and its surface can be heat-treated or chrome-plated to improve wear resistance and corrosion resistance. The diameter of the rotating shaft is matched with the diameter of the rotating shaft mounting hole 122 to ensure an appropriate fit clearance between them. This ensures that the rotating shaft can rotate freely while preventing the movable skirt body 13 from shaking during opening or closing due to excessive clearance. It should be noted that, as Figure 4 As shown, the opening angle of the movable skirt panel 13 can be set according to actual needs, such as opening to 30°, 45°, 60° or 90° with the vertical plane, which is not limited in this application.

[0050] In some embodiments, such as Figure 3 and Figure 5 As shown, the skirt structure may further include a telescopic support member 30, with one end of the telescopic support member 30 connected to the mounting base 20 and the other end connected to the movable skirt body 13. The telescopic support member 30 provides support and maintains the open state after the movable skirt body 13 is opened, preventing the movable skirt body 13 from accidentally closing under gravity or wind load, thereby ensuring the safety of workers.

[0051] In some embodiments, such as Figure 5 and Figure 6 As shown, the skirt structure may further include a connecting seat 40 and a connecting member 50. The movable skirt body 13 is connected to the connecting seat 40 via the connecting member 50, and the telescopic support member 30 is connected to the connecting seat 40, with the connecting member 50 located within the C-shaped groove 121. Specifically, the connecting seat 40 has a connecting hole and a mounting ear plate. The connecting member 50 passes through the C-shaped groove 121 and is fixedly connected to the mounting ear plate of the connecting seat 40. One end of the telescopic support member 30 is hinged to the connecting hole, thus achieving a secure connection between one end of the telescopic support member 30 and the movable skirt body 13. Simultaneously, the other end of the telescopic support member 30 is hinged to the mounting seat 20 via a pin. When the movable skirt body 13 is opened, the piston rod of the telescopic support member 30 extends outward, putting the telescopic support member 30 in a stretched state and providing continuous support force to the movable skirt body 13. It should be noted that the connector 50 can be a combination of a bolt and a slider nut. That is, the connector 50 may include a bolt passing through the mounting ear plate of the connecting seat 40 and a slider nut that mates with the bolt. During assembly, the slider nut is first slid into the C-shaped groove 121 from the end of the groove, and then the bolt is screwed into the slider nut through the connecting seat 40. As the bolt is tightened, the slider nut is pulled tight and secured to the inner wall of the C-shaped groove 121, thereby achieving a tight connection between the connecting seat 40 and the movable skirt body 13. Alternatively, the connector 50 can be a bolt fastening assembly with a pre-embedded T-shaped slider. In this case, a slider with a T-shaped cross-section is pre-embedded in the C-shaped groove 121. The shape of the T-shaped slider is adapted to the opening and internal space of the C-shaped groove, so that it can only slide along the length of the groove and cannot come out. During installation, the bolts are passed through the mounting lugs of the connector 40 and threaded onto the embedded T-slider, thereby providing a larger force-bearing area during tightening and significantly improving the pull-out resistance and positioning stability of the connector 40.

[0052] In some embodiments, such as Figure 5 and Figure 6As shown, the telescopic support 30 may include a gas spring or a hydraulic rod. The gas spring has advantages such as small size, light weight, easy installation, and adjustable support force. It uses high-pressure gas as the working medium and achieves its support function through the extension and retraction of a piston rod. The hydraulic rod utilizes the incompressibility of hydraulic oil to provide a more stable and adjustable support force. Those skilled in the art can select either a gas spring or a hydraulic rod as the telescopic support 30 according to actual working conditions. In this embodiment, the telescopic support 30 preferably uses a gas spring, which may include a cylinder and a piston rod. The cylinder is filled with high-pressure inert gas (such as nitrogen), and the piston rod has a piston with a throttling orifice. When the movable skirt body 13 is opened, the piston rod extends outward under force. The gas passing through the throttling orifice generates a damping effect, making the movement of the piston rod smoother and preventing the movable skirt body 13 from impacting or rapidly falling during opening. Furthermore, an overload protection valve can be installed inside the gas spring. When the external load exceeds a preset threshold, the valve automatically opens to relieve pressure, thereby protecting the gas spring from damage.

[0053] In some embodiments, such as Figure 4 As shown, the skirt structure may further include a skirt lock 60, which can lock the movable skirt body 13 and the mounting base 20. At least one closed cavity 11 is a rectangular cavity 111, which can accommodate the skirt lock 60. In this embodiment, as... Figure 4 As shown, the skirt panel lock 60 is installed in the rectangular cavity 111. When the movable skirt panel body 13 is in the closed state, the latch of the skirt panel lock 60 can extend out of the rectangular cavity 111 and engage with the latch on the mounting base 20 to lock. The skirt panel lock 60 can adopt various structural forms such as rotary latch lock, paddle lock, and latch lock.

[0054] In some embodiments, such as Figure 4 As shown, the skirt panel lock 60 can be a rotary latch lock. The rotary latch lock uses a four-corner key to drive the lock cylinder to rotate 90° to open and close the lock. The rotary latch lock has a self-locking function; when the lock is in the open or locked state, the latch cannot rotate freely and the lock cylinder must be driven to rotate by the key, thus ensuring the safe locking of the movable skirt panel body 13 in operation. When the movable skirt panel body 13 is closed, the latch extends into the lock groove or keyhole on the mounting base 20 to achieve locking. When it is necessary to open, the user drives the lock cylinder to rotate 90° using the key, causing the latch to exit the lock groove or keyhole and unlock.

[0055] In some embodiments, such as Figure 8 and Figure 9 As shown, the skirt panel body 10 can be a fixed skirt panel body 14. The fixed skirt panel body 14 is fixedly connected to the mounting base 20 via a fastener 70, and the fastener 70 is located within the C-shaped groove 121. Wherein, as... Figure 2As shown, the fixed skirt panel body 14 and the movable skirt panel body 13 adopt the same profile cross-section structure, but the pivot mounting hole 122 on the fixed skirt panel body 14 can be machined away, thus eliminating this structural feature. The skirt panel body 10 can be transformed into the structure of the fixed skirt panel body 14 by removing material, and further weight reduction of the skirt panel structure can be achieved. Specifically, the fastener 70 can be a bolt, screw, pin, or other fastener. During the assembly of the fixed skirt panel body 14, the fastener 70 passes through the open end of the C-shaped groove 121, its head is embedded in the C-shaped groove 121 and locked by a nut or directly engaged with the inner wall of the C-shaped groove 121. Due to the restriction of the opening direction of the C-shaped groove 121, the fastener 70 will not come out of the C-shaped groove 121, thus ensuring reliable fixation between the fixed skirt panel body 14 and the mounting base 20. Of course, during the installation of the fixed skirt panel body 14, a pre-embedded slider can also be used. The slider is placed in the C-shaped groove 121 in advance, and bolts and other fasteners 70 pass through the threaded holes of the slider to press the slider against the inner wall of the C-shaped groove 121, thereby achieving the fixed installation of the fixed skirt panel body 14 and further improving the connection strength and positioning accuracy of the fixed skirt panel body 14.

[0056] In the above embodiments, each skirt panel body 10 can be provided with one or more mounting seats 20 along the length of the vehicle. The number of mounting seats 20 can be appropriately increased or decreased according to the actual length of the skirt panel body 10. For example, when the length of the skirt panel body 10 is 1100mm to 2336mm, 2 to 4 mounting seats 20 can be provided to meet the installation requirements. At the same time, the mounting seats 20 can also adopt an integrated aluminum alloy structure or other integrated thin-walled closed structure. After the connecting surface (such as the flange surface) of the mounting seat 20 is attached to the mounting surface of the vehicle body underframe side beam 80, it is locked by bolts or other fasteners, thereby realizing the installation and fixation of the skirt panel body 14 on the vehicle body underframe side beam 80.

[0057] In some embodiments, such as Figure 3 and Figure 7As shown, for movable skirt body 13 with a longer length or requiring higher operational stability, the skirt structure may also be equipped with one or more reinforcing seats 100, which can be used to rotatably connect the movable skirt body 13 to the side beam 80 of the vehicle body frame. Specifically, the reinforcing seat 100 and the aforementioned mounting seat 20 may have a similar integrally formed profile structure, but it is not used for locking or cooperating with the skirt lock 60, but simply serves as an auxiliary rotation support component. The upper end of the reinforcing seat 100 is fixedly connected to the bottom surface of the side beam 80 of the vehicle body frame by fasteners such as bolts, and its lower end is provided with a hinge hole adapted to the movable skirt body 13. The corresponding position of the movable skirt body 13 is hinged to the reinforcing seat 100 through an independent pivot. When the movable skirt body 13 rotates around its pivot to open or close, the reinforcing seat 100 simultaneously bears the radial load during its rotation, thereby preventing sagging or twisting deformation in the middle due to excessive length or wide span of the movable skirt body 13. It should be noted that in actual assembly, the number and position of the reinforcing seats 100 can be flexibly set according to the length of the movable skirt body 13, the arrangement spacing of the skirt locks 60, and the maintenance space of the under-vehicle equipment. For example, when the distance between two adjacent skirt locks 60 is too large, or when the length of the movable skirt body 13 exceeds a preset threshold, such as more than 1500mm, a reinforcing seat 100 can be added in the middle between the two skirt locks 60. When the length of the movable skirt body 13 is further increased, two or more reinforcing seats 100 can also be set to form multi-level auxiliary support. By adding reinforcing seats 100, the end free deflection of the movable skirt body 13 in the open state can be effectively reduced, ensuring the consistency of the opening; at the same time, in the locked state, it can significantly absorb the pulsating load brought by wind pressure, transforming the force originally concentrated on the mounting seats 20 and locks at both ends into the collaborative force of multiple nodes, thereby greatly extending the fatigue life of the skirt structure under long-term operating conditions and improving the reliability of the entire skirt structure.

[0058] In some embodiments, both the skirt body 10 and the mounting base 20 are machined from aluminum alloy profiles. The lowest point of the skirt body 10 is approximately 350mm from the lower plane of the underframe side beam 80. Meanwhile, to ensure that the movable skirt body 13 can open smoothly around the pivot without interfering with the underframe side beam 80, a gap of approximately 8mm is provided between the upper edge of the skirt body 10 and the lower surface of the underframe side beam 80. Along the longitudinal direction of the vehicle body, an assembly gap of approximately 5mm is reserved between adjacent skirt bodies 10, which satisfies the deformation requirements of thermal expansion and contraction while maintaining overall aesthetic appeal. For the fixed skirt body 14, it is connected to the mounting base 20 via a slider embedded in the C-shaped groove 121 and a fixing element 70 (such as a bolt). The mounting base 20 is then fixed to the underframe side beam 80 by bolts. The movable skirt panel body 13 is connected to the mounting base 20 via skirt panel locks 60 and connecting seats 40, and is equipped with a pivot, telescopic support 30, and limiting rubber strip. When the skirt panel structure is long (e.g., between 1160mm and 2780mm), each movable skirt panel body 13 can be equipped with 2 to 4 skirt panel locks 60. In addition, if the distance between two adjacent skirt panel locks 60 is too large, in order to ensure locking reliability and force balance during opening, an auxiliary pivot seat can be added in the middle of the distance to distribute stress and ensure smooth opening and closing.

[0059] This application also discloses a rail vehicle, including a car body underframe side beam 80 and a skirt structure as disclosed in the above embodiments. Therefore, it possesses all the technical effects of the aforementioned skirt structure, which will not be repeated here. The skirt body 10 is mounted on the car body underframe side beam 80 via a mounting base 20, and as described above... Figure 10 As shown, multiple skirt structures can be sequentially spliced ​​along the length of the vehicle. For example, according to maintenance needs, some skirt structures can be set as movable skirt main bodies 13, and the remaining skirt structures can be set as fixed skirt main bodies 14.

[0060] It should be noted that the arrangement order of the movable skirt panel body 13 and the fixed skirt panel body 14 in the longitudinal direction of the vehicle body can be adjusted according to the vehicle equipment maintenance needs. For example, the movable skirt panel body 13 can be set in equipment areas with routine maintenance needs, and the fixed skirt panel body 14 can be set in equipment areas without routine maintenance needs. On the same vehicle, the number and distribution position of the movable skirt panel body 13 and the fixed skirt panel body 14 can be freely determined according to the actual application scenario.

[0061] In some embodiments, the rail vehicle may further include a bogie, and the end of the skirt body 10 near the bogie is an arc-shaped structure 90. During operation, the bogie area is typically not equipped with a skirt, resulting in an opening at the end of the skirt in the bogie area. The arc-shaped structure 90 at the end of the skirt body 10 near the bogie not only avoids sharp edges in the skirt structure in the bogie area that could cause visual abruptness or safety hazards, but also improves the overall aesthetics of the vehicle.

[0062] The terminology used in the above embodiments is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0063] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0064] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0065] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0066] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A skirt structure, characterized in that, include: Skirt body (10), the skirt body (10) is an integrally formed profile structure, the profile section of the skirt body (10) has at least one closed cavity (11), and the skirt body (10) is provided with an installation interface (12) for installing accessories. Mounting seat (20), which is connected to the skirt body (10), is used to mount the skirt body (10) onto the side beam (80) of the vehicle body frame.

2. The skirt structure according to claim 1, characterized in that, The mounting interface (12) includes at least one of a C-shaped groove and a rotating shaft mounting hole (122).

3. The skirt structure according to claim 2, characterized in that, The main body of the skirt panel (10) is a movable skirt panel (13). The movable skirt panel (13) is hinged to the mounting base (20) through a pivot. The pivot is installed in the pivot mounting hole (122).

4. The skirt structure according to claim 3, characterized in that, It also includes a telescopic support (30), one end of which is connected to the mounting base (20), and the other end of which is connected to the movable skirt body (13).

5. The skirt structure according to claim 4, characterized in that, It also includes a connecting seat (40) and a connector (50). The movable skirt body (13) is connected to the connecting seat (40) through the connector (50). The telescopic support (30) is connected to the connecting seat (40). The connector (50) is located in the C-shaped groove.

6. The skirt structure according to claim 3, characterized in that, It also includes one or more reinforcing seats (100) for rotatably connecting the movable skirt body (13) to the side beam (80) of the vehicle body frame.

7. The skirt structure according to claim 3, characterized in that, It also includes a skirt lock (60) for locking the movable skirt body (13) and the mounting base (20), and at least one of the closed cavities (11) is a rectangular cavity (111) for installing the skirt lock (60).

8. The skirt structure according to claim 2, characterized in that, The main body of the skirt board (10) is a fixed skirt board main body (14). The fixed skirt board main body (14) is fixedly connected to the mounting base (20) through a fastener (70), and the fastener (70) is located in the C-shaped groove.

9. A rail vehicle, characterized in that, It includes a vehicle body underframe side beam (80) and a skirt structure as described in any one of claims 1 to 8, wherein the skirt body (10) is mounted on the vehicle body underframe side beam (80) via the mounting base (20).

10. The rail vehicle according to claim 9, characterized in that, It also includes a bogie, wherein the skirt body (10) near the end of the bogie is an arc-shaped structure (90).

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