Integral window frame skeleton connecting structure, vehicle body and railway vehicle

Abstract

The invention relates to the field of rail transit, and provides an integral window frame skeleton connecting structure, a vehicle body and a rail vehicle. The integral type window frame framework connecting structure comprises a plurality of window frames, a plurality of stand columns and joint connecting pieces. A window area is defined by the window frames and suitable for being connected with an outer wallboard. The node connecting piece is connected between two adjacent window frames; the node connecting piece is vertically bent to form a node bent section, and the node bent section can be connected to the wallboard bent section of the outer wallboard in an attached mode. The stand columns are connected to the node connecting pieces respectively. According to the integral type window frame framework connecting structure, the connecting relation between the window frame and the stand column can be optimized through the node connecting piece, and the connecting relation of the bent sections of the wallboards is improved, so that it is guaranteed that the integral type window frame framework connecting structure can reliably adapt to different force transmission paths; the stability and strength requirements of window area cooperative vehicle body bearing can be completely met, and the light weight requirement of the vehicle body can be met.

Description

Technical Field

[0001] This invention relates to the field of rail transit, and provides an integral window frame skeleton connection structure, as well as a car body and rail vehicle. Background Technology

[0002] In the body structure of rail vehicles, the window area, as an opening in the side wall, significantly impacts the structural integrity and load-bearing capacity. Window area design must balance lighting requirements with structural strength, particularly offsetting the reduction in overall body rigidity caused by the opening to prevent stress concentration that could lead to deformation or fatigue damage. Simultaneously, the connection strength between the window area and the body frame directly affects the vehicle's torsional resistance during operation, especially under conditions such as curved driving and emergency braking, where it must collaboratively bear longitudinal and lateral loads, making it a critical node for ensuring the vehicle's load-bearing stability.

[0003] However, in the existing vehicle body side wall structure, the window area installation structure is scattered and complex. After the window area structure is formed, it contributes very little to the overall strength and stiffness of the side wall. It is difficult to adapt to the column structure with different force transmission paths, resulting in a complex beam and column structure in the side wall frame structure, which does not meet the requirements of vehicle body lightweighting.

[0004] Furthermore, the window area installation structure is scattered and complex, and is also affected by manufacturing errors, tolerance accumulation, and welding deformation, which is not conducive to the structural dimensions, tolerance control, and on-site vehicle construction process requirements of each installation interface in the window area.

[0005] Furthermore, the corners of the window area are stress concentration zones. In existing window area structures, the corners are usually reinforced with reinforcing plates, which has limited effect on improving structural strength and makes it difficult to fully meet the stability and strength requirements of the vehicle body. Summary of the Invention

[0006] This invention provides an integral window frame skeleton connection structure to solve the defects in related technologies, such as the dispersed and complex window area installation structure, the small contribution of the window area structure to the overall strength and stiffness of the side wall after its formation, the difficulty in adapting to column structures with different force transmission paths, and the complex beam and column structures in the side wall skeleton structure.

[0007] Based on this integral window frame skeleton connection structure, the present invention further provides a vehicle body.

[0008] Based on this integral window frame skeleton connection structure or vehicle body, the present invention further provides a rail vehicle.

[0009] The present invention provides an integral window frame skeleton connection structure, comprising a plurality of window frames enclosing a window area, the window area being suitable for connecting an exterior wall panel; node connectors connecting adjacent window frames; the node connectors being vertically bent to form node bending sections, the node bending sections being able to fit and connect to the wall panel bending sections of the exterior wall panel; and a plurality of columns, respectively connected to the node connectors.

[0010] According to the present invention, an integral window frame skeleton connection structure includes a node connector comprising: a connecting body, which is vertically bent to form the node bending section; a plurality of protruding sections, which are respectively connected to the connecting body and extend outward from the connecting body as the center; the window frame and the column can be connected to the connecting body through the protruding sections; and a plurality of transition sections, which are respectively disposed between two adjacent protruding sections.

[0011] According to the present invention, an integral window frame skeleton connection structure includes several protruding sections: two first protruding sections, which are respectively connected to adjacent window frames; several second protruding sections, which are respectively connected to each of the columns; wherein, the connecting body forms a transition section between two adjacent first protruding sections, between two adjacent second protruding sections, and between adjacent first protruding sections and second protruding sections.

[0012] According to the present invention, an integral window frame skeleton connection structure is provided, wherein the two first protruding sections are perpendicular to each other, and the transition section connecting the two first protruding sections is an arc-shaped transition section.

[0013] According to the integral window frame skeleton connection structure provided by the present invention, the two first protruding sections are arranged collinearly, and the transition section connecting the two first protruding sections is a straight transition section.

[0014] According to the present invention, the outer surface of the protruding section is constructed as a cap-shaped beam, and the ends of the column and the window frame are respectively constructed with grooves. The protruding section can be slidably assembled with the grooves of the column or the window frame through the cap-shaped beam and achieve three-sided overlapping connection.

[0015] According to the present invention, an integral window frame frame connection structure is provided, wherein the outer wall panel includes: a first wall body with an upper side beam connection end at the top and the window area thereon; a second wall body with a lower side beam connection end at the bottom; a wall panel bending section is provided along the vehicle length and connected between the first wall body and the second wall body, and the first wall body is set at an angle to the second wall body based on the wall panel bending section; the wall panel bending section is located below the lower edge of the window frame; wherein, each end of the window area along the vehicle length direction is connected to a node connector.

[0016] According to the present invention, an integral window frame frame connection structure is provided, wherein a plurality of horizontal beams and a plurality of columns are arranged at intervals on the first wall and the second wall, wherein each horizontal beam is arranged along the length of the vehicle, and each column is arranged at an angle to the horizontal beam.

[0017] According to the present invention, an integral window frame frame connection structure is provided, wherein the window frame includes: an outer window frame, which is arranged as a B-beam and is integrally constructed on the outer wall panel at the location where the window area is provided; an inner window frame, one end of which is fixed to the inner side of the outer window frame and the other end of which is fixed to the surface of the nearest horizontal beam; a continuous bending section is constructed between the two ends of the inner window frame, and the continuous bending section can be closed with the outer window frame to form a U-shaped cavity structure.

[0018] According to the present invention, an integral window frame skeleton connection structure further includes: auxiliary connectors, which are connected between the plurality of columns.

[0019] The present invention also proposes a vehicle body, comprising: an outer wall panel on which the above-mentioned integral window frame skeleton connection structure is installed; and a window frame installed on the integral window frame skeleton connection structure.

[0020] The present invention also proposes a rail vehicle, including the above-described integral window frame skeleton connection structure; or, including the vehicle body as described in claim 11.

[0021] This invention provides an integral window frame skeleton connection structure (hereinafter referred to as "window frame skeleton connection structure" or "skeleton structure"). The skeleton structure includes several window frames, several columns, and node connectors. The window frames enclose a window area, which is suitable for connecting an exterior wall panel. Node connectors connect adjacent window frames; the node connectors are vertically bent to form node bends, which can fit snugly against the bends of the exterior wall panel. Several columns are respectively connected to the node connectors; each column can fit snugly against the flat surface of the exterior wall panel. This integral window frame skeleton connection structure optimizes the connection relationship between the window frames and columns through node connectors and improves the connection relationship with the bends of the wall panel, thereby ensuring that the integral window frame skeleton connection structure can reliably adapt to different force transmission paths. It can fully meet the stability and strength requirements of the window area co-bearing the vehicle body, while also meeting the requirements for lightweighting the vehicle body.

[0022] Furthermore, the skeleton structure provided by this invention can reliably adapt to the bending sections of the side walls, ensuring that after the columns and window frames are connected by the node connectors, they can be flat and fit snugly against the inner surface of the exterior wall panel, avoiding the use of bending, stamping, or other structures on the columns, effectively improving the vertical support strength of the columns and improving the longitudinal force transmission efficiency; on the other hand, the node connectors play a reinforcing role at the window corner positions in the window area, replacing the traditional window corner reinforcement plates, improving the overall rigidity of the window area, and improving the window corner stress.

[0023] The present invention also provides a vehicle body, including an outer wall panel and a window. The outer wall panel is fitted with the aforementioned frame structure. The window is mounted on the window frame of the frame structure. By setting the aforementioned frame structure, the vehicle body possesses all the advantages of the aforementioned frame structure, which will not be elaborated further here.

[0024] The present invention also provides a rail vehicle, which, by setting the above-mentioned frame structure, possesses all the advantages of the above-mentioned frame structure, and the details will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a front view of the integral window frame skeleton connection structure provided by the present invention.

[0027] Figure 2 This is a side view of the integral window frame skeleton connection structure provided by the present invention.

[0028] Figure 3 This invention provides Figure 2 An enlarged schematic diagram of the structure at point D is shown in the figure.

[0029] Figure 4 This invention provides Figure 1 An enlarged schematic diagram of the structure at point A is shown in the image.

[0030] Figure 5 This invention provides Figure 1 The side sectional view of the structure at point B is shown in the figure.

[0031] Figure 6 This invention provides Figure 1 The side sectional view of the structure at point C is shown in the figure.

[0032] Figure label: 1. Exterior wall panel; 11. First wall; 12. Second wall; 2. Horizontal beam; 3. Node connector; 30. Connecting body; 31. Node bending section; 32. First protruding section; 33. Second protruding section; 34. Transition section; 4. Column; 5. Window frame; 51. Inner window frame; 52. Outer window frame; 6. Wall panel bending section; 7. Auxiliary connector; 8. Upper beam connection end; 9. Lower beam connection end. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] refer to Figures 1 to 6 As shown, the skeleton structure described in this embodiment of the invention is installed on the side wall of a rail vehicle as part of the overall skeleton structure of the side wall. This skeleton structure includes several window frames 5, several columns 4, and node connectors 3. The window frames 5 enclose a window area, which is suitable for connecting to the outer wall panel 1. The node connectors 3 connect adjacent window frames 5. The node connectors 3 are vertically bent to form node bending sections 31, which can fit and connect to the wall panel bending sections 6 of the outer wall panel 1. Several columns 4 are respectively connected to the node connectors 3. Each column 4 can fit and connect to the flat surface of the outer wall panel 1. Because the node bending section 31 is tightly fitted with the wall panel bending section 6 of the outer wall panel 1, it can reliably adapt to the bending section of the side wall, ensuring that the column 4 and the window frame 5 can be flatly fitted to the inner surface of the outer wall panel 1 after being connected by the node connector 3. This avoids the use of bending, stamping, or other structures on the column 4, effectively improving the vertical support strength of the column 4 and improving the longitudinal force transmission efficiency. On the other hand, the node connector 3 plays a reinforcing role at the window corner position of the window area, replacing the traditional window corner reinforcement plate, improving the overall rigidity of the window area, and improving the window corner stress.

[0035] Therefore, the integral window frame 5 skeleton connection structure can optimize the connection relationship between the window frame 5 and the column 4 through the node connector 3, and improve the connection relationship with the wall panel bending section 6, thereby ensuring that the integral window frame 5 skeleton connection structure can reliably adapt to different force transmission paths, which can not only fully meet the stability and strength requirements of the window area cooperating with the vehicle body to bear load, but also meet the requirements of vehicle body lightweighting.

[0036] It should be noted that, in the embodiments of the present invention, "up" and "down" refer to up and down along the vertical direction of the vehicle body. "Front" and "rear," and "left" and "right" refer to front and rear along the length of the vehicle body. "Inner" refers to the direction inside the vehicle; "outer" refers to the direction outside the vehicle.

[0037] In some embodiments, reference Figure 1 and Figure 2 As shown, the exterior wall panel 1 includes a first wall 11 and a second wall 12 integrally connected vertically. The top of the first wall 11 has an upper beam connecting end 8, which is adapted to connect to the upper beam of the vehicle side wall. The first wall 11 has a window area. The bottom of the second wall 12 has a lower beam connecting end 9, which is adapted to connect to the lower beam of the vehicle side wall. In this embodiment of the invention, the wall panel bending section 6 is arranged along the vehicle length, and the wall panel bending section 6 connects the first wall 11 and the second wall 12. That is, the first wall 11 and the second wall 12 bend at the wall panel bending section 6, so that the first wall 11 is angled to the second wall 12 based on the wall panel bending section 6. To ensure the structural rigidity of the window and reasonably reduce wind resistance, it is preferable that the wall panel bending section 6 is located below the lower edge of the window frame 5. In this embodiment, a node connector 3 is connected to each end of the window area along the length of the vehicle. In particular, the node connector 3 connected to the lower left and lower right corners of the window in this embodiment can fit tightly with the wall panel bending section 6. Since the node bending section 31 fits tightly with the wall panel bending section 6 of the outer wall panel 1, it can reliably adapt to the bending section of the side wall, ensuring that after the column 4 and the window frame 5 are connected by the node connector 3, they can fit flatly and fit on the inner surface of the outer wall panel 1, avoiding the use of bending, stamping or other structures on the column 4, effectively improving the vertical support strength of the column 4 and improving the longitudinal force transmission efficiency; on the other hand, the node connector 3 plays a reinforcing role at the window corner position of the window area, replacing the traditional window corner reinforcement plate, improving the overall rigidity of the window area, and improving the window corner stress.

[0038] In some specific embodiments, reference is made to Figure 1 and Figure 2As shown, several horizontal beams 2 and several vertical columns 4 are arranged at intervals on the first wall 11 and the second wall 12, respectively. Each horizontal beam 2 is set along the length of the vehicle, and each vertical column 4 is set at an angle to the horizontal beam 2. The multiple spaced horizontal beams 2 are fixed to the surface of the outer wall panel 1 by flanges, providing a force transmission path in the length direction for the side wall and locally thickening the frame structure of the outer wall panel 1 to improve structural rigidity. Each vertical column 4 is set at an angle to the horizontal beam 2, and the vertical column 4 has force components in both the height and length directions of the vehicle. Therefore, it can not only cooperate with the horizontal beams 2 to provide force transmission and load-bearing in the height and length directions of the vehicle, but also form a triangular beam unit with the upper beam, lower beam, any window frame 5, and any horizontal beam 2, providing sufficient structural rigidity for the side wall. The triangular beam unit ensures excellent stability, high material utilization, and superior mechanical properties of the sidewall. Composed of multiple columns 4 and window frames 5 or side beams, the triangular beam unit effectively and reliably transmits loads acting on the frame structure, such as tension, compression, and bending moments, along the length of the columns 4. The columns 4 primarily bear tension or compression along their length, representing the most efficient material utilization state and fully utilizing the material's strength potential, significantly reducing material waste caused by bending stress. Based on this structure, the node connectors 3 and auxiliary connectors 7 ensure that the inclined columns 4 avoid the curved sections of the sidewall's waistline area (e.g., the aforementioned wall panel bending section 6). These curved sections are fitted to the sidewall contour through the inner and outer contours of the node connectors 3, ensuring that all inclined columns 4 connected to the node connectors 3 are straight beam segments. This also significantly reduces the number of columns 4 and optimizes the column 4 structure.

[0039] This is because the skeleton structure, composed of multiple columns forming multiple triangular beam units, creates an overall structure with extremely high rigidity. This effectively resists bending and shear deformation caused by various external loads, ensuring overall structural stability and safety. Furthermore, since column 4 primarily bears axial forces and the force transmission path is clear and direct, the skeleton structure can achieve a large span or height with relatively lightweight beam cross-sections, significantly saving material and reducing structural weight and cost. Moreover, in the complex spatial grid structure constructed from these interconnected triangular beam units, the interconnection of these units provides multiple load transfer paths for the skeleton structure. Even if individual columns 4 fail, the load can be redistributed through other paths, providing a certain degree of safety redundancy and overall robustness to the structure.

[0040] It should be noted that, in this embodiment of the invention, the column 4 is preferably inclined relative to the vehicle length direction because the frame structure, through the aforementioned node connectors 3, effectively improves the stress state of the window corners and the wall panel bending section 6 of the outer wall panel 1. It should be understood that this frame structure can also be applied to conventional vertical column 4 configurations.

[0041] In some embodiments, reference Figures 1 to 4 As shown, the node connector 3 includes a connecting body 30, several protruding sections, and several transition sections 34. The connecting body 30 is vertically bent to form the node bending section 31, as shown in the reference diagram. Figure 2 and Figure 3 As shown. By bending the connecting body 30 vertically to adapt to and fit the surface of the outer wall panel 1, the entire frame structure is ensured to fit the outer wall panel 1, achieving better reliable adaptation to different force transmission paths. Several protruding sections are connected to the connecting body 30, and extend outwards from the connecting body 30 as the center. The window frame 5 and the column 4 can be connected to the connecting body 30 through the protruding sections. Several transition sections 34 are respectively set between two adjacent protruding sections. Since the connecting body 30 bears the load of the wall panel bending section 6, the number and structure of the columns 4 are optimized, ensuring that the columns 4 maintain a straight beam structure regardless of whether they are set vertically or inclined, reducing manufacturing costs, and further optimizing the structure, cost, and types of molds.

[0042] In some specific embodiments, reference is made to Figure 1 and Figure 4 As shown, the protruding sections include two first protruding sections 32 and several second protruding sections 33. The two first protruding sections 32 are respectively connected to adjacent window frames 5. The several second protruding sections 33 are respectively connected to each column 4. The connecting body 30 forms a transition section 34 between adjacent first protruding sections 32, between adjacent second protruding sections 33, and between adjacent first protruding sections 32 and second protruding sections 33, respectively. (Refer to...) Figure 4 As shown.

[0043] Since the window frame 5 connected by the two first protruding sections 32 and the transition section 34 formed between the two first protruding sections 32 can together form a window corner of the window area, by changing the structural form of the window corner node connector 3, it is possible to adapt to the column 4 structure with different force transmission paths. The columns 4 are all in straight sections, avoiding the use of columns 4 with bending or stamping structures, thus reducing mold costs and types. Preferred Reference Figure 1As shown, the four corners of the window area are connected to the window frame 5 using node connectors 3 to form window corners. Since the node connectors 3 are attached to the exterior wall panel 1 and their width is significantly greater than that of the window frame 5 and the other columns 4, the extended section of the node connectors 3 can reliably connect to the window frame 5, forming a vertical force transmission path and protecting the window. Furthermore, the transition section 34 of the node connectors 3 thickens the structure at the window corners through an arc structure, thereby effectively improving the stress at the window corners and enhancing the overall rigidity of the window area.

[0044] The present invention provides two sets of specific structures of node connectors 3 as specific embodiments, and provides a detailed description of the structure of node connectors 3.

[0045] In one embodiment of the present invention, reference is made to Figure 1 As shown, for example, the node connectors 3 at the four corners of the window area are preferably made by stamping. The two first protruding sections 32 are perpendicular, and the transition section 34 connecting the two first protruding sections 32 is an arc-shaped transition section. Since the overall beam structure of the node connector 3 has a significantly larger coverage area than the column 4 of the window frame 5, the arc-shaped transition section can provide a more reliable stress-bearing structure for the window frame 5 at the window corner, avoiding stress concentration at the window corner and thus preventing insufficient stiffness in the window area. This better adapts to the different force transmission paths required in the frame structure of the vehicle sidewall. Furthermore, the node connector 3 forms a larger and more reliable load-bearing beam structure at the window corner, significantly reducing the number of other columns 4 connected to it. Combined with the inclined columns 4, it can provide force transmission paths in both the length and height directions of the vehicle to the sidewall, making the force transmission path of the frame structure more rational and efficient.

[0046] Understandably, all transition sections 34 of the preferred node connector 3 can be set as arc-shaped transition sections, as long as the included angle between the beams (e.g., two columns 4, or column 4 and window frame 5) connecting the extended sections on both sides of the transition section 34 is not 180 degrees. The arc-shaped transition section can ensure that the stress concentration between two beams set at the included angle reduces the damage to the structure caused by the angle and improves the structural stiffness.

[0047] In another embodiment of the present invention, for example, in the node connector 3 connected to the middle of the same window frame 5 in the window area, the two first protruding sections 32 are arranged collinearly, and the transition section 34 connecting the two first protruding sections 32 is a straight transition section 34. (Refer to...) Figure 1As shown, the lower frame is equipped with a node connector 3 of a different structure. The connecting body 30 of this node connector 3 has two first protruding sections 32 at an angle of 180 degrees. These two first protruding sections 32 are respectively connected to the same window frame 5. That is, the window frame 5 can be divided into two parts and connected by these two first protruding sections 32 to form the lower window frame 5, or it can be a single window frame 5 structure passing through these two first protruding sections 32, with the connecting body 30 reinforcing the lower window frame 5. The other two second protruding sections 33 of the node connector 3 at this location are respectively angled and extend downwards to connect to two inclined columns 4. These two columns 4 are reliably supported below the lower window frame 5 based on the node connector 3, providing reliable vertical load-bearing capacity for the window area and allowing the two columns 4 to reliably transmit force to the vehicle body through longitudinal force. Furthermore, this window lower structure only requires one node connector 3 and two inclined columns 4 to meet the load-bearing and force transmission requirements, resulting in a more optimized and lightweight structural composition compared to traditional sidewall frame structures.

[0048] In one specific embodiment of the present invention, reference is made to... Figure 1 As shown, the preferred side wall window area has four window frames 5: an upper window frame, a lower window frame, a left window frame, and a right window frame. The upper, lower, left, and right window frames together form a rectangular window area for fixing the window within this area. Preferably, the two ends of the upper window frame are connected to the left and right window frames respectively via the node connectors 3 described in the second embodiment; preferably, the two ends of the lower window frame are connected to the left and right window frames respectively via the node connectors 3 described in the first embodiment.

[0049] It should be noted that, in this embodiment of the invention, the number of the second protruding sections 33 of the node connector 3 is determined based on the number of connected columns 4. Preferably, the node connector 3 is constructed as a disc-shaped structure with multiple outwardly protruding sections, thereby greatly increasing the cavity area formed between the beam body of the node connector 3 and the outer wall panel 1, increasing the load-bearing capacity, and effectively improving the stress state at the current installation location. Preferably, the node connector 3 adopts a structure similar to a hat-shaped beam. That is, the cross-section of the node connector 3 includes a top plate, a pair of web plates, and a pair of flanges. The top plate is connected to a pair of web plates at both ends, and each pair of web plates is connected to a pair of flanges. The node connector 3 is reliably welded to the surface of the outer wall panel 1 or the beam 2 using a pair of flanges. A closed cavity is formed between the top plate of the node connector 3 and the surface of the outer wall panel 1 or the beam 2, thereby providing better reinforcement and fixation for its installation location.

[0050] In some specific embodiments, reference is made to Figure 4As shown, the outer surface of the protruding section of the present invention is preferably constructed as a hat-shaped beam. The hat-shaped beam includes a top plate, a web plate, and side plates, with outwardly folded side plates connected to both sides of the top plate. The hat-shaped beam of the protruding section is fixed to the outer wall panel 1 and the crossbeam 2 using the side plates, and the ends of the column 4 and the window frame 5 are respectively constructed with grooves, allowing the protruding section to slide and assemble with the grooves of the column 4 or the window frame 5 through the hat-shaped beam, thus optimizing the structure of the column 4. The column 4 is also preferably constructed as a hat-shaped beam, which is fastened to the outside of the protruding section to form a sliding assembly connection structure. During assembly, the overlapping assembly position of the column 4 and the protruding section can be flexibly adjusted by pulling.

[0051] Furthermore, after the cap-shaped beam structure of the extended section overlaps with the groove structure of the column 4 and the window frame 5, it is fixed by welding to form a three-sided overlapping connection structure of the top plate and a pair of web plates, thereby realizing the three-sided overlapping connection between the extended section and the column 4 or between the extended section and the window frame 5.

[0052] Furthermore, the cavity section structure of the cap-shaped beam can form a closed or semi-closed structure similar to a "box" or "mouth," which can effectively distribute the load, improve the overall load-bearing capacity, and provide a more uniform stress distribution when subjected to torque. This effectively resists torsional deformation, reduces deflection deformation, and improves the overall structural stiffness around the window area. More importantly, this structural design allows the skeleton structure equipped with node connectors 3 to better conform to the mechanical principle of "material reduction in tension zones and material addition in compression zones." By concentrating material in key stress-bearing areas (such as window corners and near wall panel bending parts), material consumption in non-stressed areas is reduced, achieving a balance between lightweight and high strength. Moreover, the one-piece molded cap-shaped beam structure has the advantages of continuous cross-section and no welding seams (or only a few seams), avoiding the degradation of material properties caused by welding heat. The use of cold bending and other processes can also improve the strength and stiffness of the material through work hardening, so that the columns 4 and window frames 5 with this structure can have higher bending and torsional resistance than ordinary profiles at the same weight.

[0053] It should be noted that the above-mentioned sliding assembly and three-sided overlapping structure can also realize an adjustable flexible connection between the node connector 3 and the column 4. That is, the overlapping position between the column 4 and the protruding section can be adjusted at any time according to the assembly needs. This can not only adapt to the force transmission path requirements, but also reliably adapt to process assembly errors while improving the connection strength, and further improve the structural rigidity.

[0054] It should be noted that, in the preferred embodiment of the present invention, both the crossbeam 2 and the column 4 are the above-mentioned hat-shaped beam structures, and the specific structural advantages will not be repeated here.

[0055] In some embodiments, reference Figure 1 , Figure 5 and Figure 6As shown, the preferred window frame 5 includes an outer window frame 52 and an inner window frame 51. The outer window frame 52 is preferably integrally stamped from the outer wall panel 1, while the inner window frame 51 is a bent component, with its four corners laser-welded. To improve the overall rigidity of the window frame 5, the outer window frame 52 and the inner window frame 51 are pre-assembled by welding, forming a closed-off cavity structure, effectively improving corner stress. In this embodiment, the outer window frame 52 is configured as a B-beam. The outer window frame 52 is integrally constructed at the location where the window area is located on the outer wall panel 1. That is, the outer wall panel 1 forms the outer window frame 52 at the end of the window area. One end of the inner window frame 51 is fixed to the inner side of the outer window frame 52, and the other end is fixed to the surface of the nearest horizontal beam 2. Thus, the outer window frame 52, the inner window frame 51, and the nearest horizontal beam 2 together form a closed-off cavity structure. Preferably, the inner window frame 51 has a continuous bent section between its two ends, which can be combined with the outer window frame 52 to form a U-shaped cavity structure. This structure can effectively widen and thicken the cavity of the window frame 5, reserve a cavity space within the window frame 5, strengthen the window connection, and provide reliable protection for the window. Therefore, the cavity structure formed by the integrated molded wall panel (outer window frame 52) and the inner window frame 51 can improve the overall strength and rigidity of the window frame 5, further strengthen the window corner structure, enhance the vehicle body strength in stress concentration areas, and improve the commercial appeal of the window area.

[0056] Furthermore, from a manufacturing process perspective, since the inner window frame 51 and the outer window frame 52 are welded together to form a cavity structure, it ensures precise matching of the shape and size requirements of the window frame 5. The close cooperation between the mold and the material effectively controls the geometric accuracy of the product, reducing dimensional deviations after molding. Moreover, it facilitates standardized production processes, enabling continuous and automated production, reducing manual intervention, ensuring the stability of the production rhythm, and thus improving overall production efficiency. In addition, the welded window frame 5 effectively reduces material consumption, improves material utilization, and meets the requirements for vehicle load distribution, stress distribution, stiffness, and lightweighting.

[0057] In some specific embodiments, reference is made to Figure 5 and Figure 6As shown, the outer window frame 52 includes an integrally bent wall panel, an outer window bend section, and an outer window flange. The cross-section of the outer window frame 52 constitutes a B-shaped beam. The integral molding of the outer wall panel 1 to form the outer window frame 52 can reduce the risk of fracture between the window area and the outer wall panel 1, reduce the possibility of stress concentration areas, and improve the overall structural rigidity of the window area. The crossbeam 2, which has a cap-shaped beam cavity structure, is fixed to the surface of the outer window frame 52 facing the inner window frame 51 by flange welding. The inner window frame 51 includes an integrally bent inner window flange and two continuous inner window bend sections. The two continuous inner window bend sections form two sets of continuous B-shaped cavities with a gap between them and the outer window frame 52 through continuous bending. The outer window frame 52 and the inner window frame 51 are fixed by overlapping welding of the outer window flange and the inner window flange, and the outer window frame 52 and the inner window frame 51 are enclosed by the two continuous inner window bend sections and the web of the crossbeam 2 to form the aforementioned mouth-shaped cavity.

[0058] It should be noted that the outer window frame 52 and the inner window frame 51 can also adopt other cavity structures, as long as the outer window frame 52 and the inner window frame 51 are enclosed by a cavity with a certain spatial thickness, thereby meeting the rigidity requirements of the window frame 5.

[0059] In some embodiments, reference Figure 1 As shown, the skeleton structure also includes auxiliary connectors 7. For example... Figure 1 The auxiliary connector 7 is shown on the outer side of the left and right window frames 5. The auxiliary connector 7 connects to multiple columns 4 to increase the connection strength between the columns 4, provide rigidity between adjacent columns 4, and reliably reinforce and strengthen the connection stress caused by the included angle between the inclined columns 4. The auxiliary connector 7 includes at least three protruding sections, and the connection structure between each protruding section and the column 4 preferably adopts the aforementioned sliding fit and three-sided overlapping connection structure. Preferably, the included angle between two adjacent protruding sections is less than or equal to 180 degrees. When the included angle between two protruding sections is 180 degrees, the columns 4 connecting these two protruding sections are collinear. Preferably, the auxiliary connector 7 can be directly overlapped and installed in the middle of one column 4, and reliably connected to the end of another column 4 through the third protruding section; or two columns 4 with the same degree of inclination (i.e., collinear) can be connected respectively through these two collinear protruding sections to achieve a linear force transmission effect, and the ends of these two columns 4 are reliably connected to the ends of another column 4 through the third protruding section of the auxiliary connector 7.

[0060] Based on the aforementioned skeleton structure, this embodiment of the invention also provides a vehicle body, including an outer wall panel 1 and a window. The outer wall panel 1 is fitted with the aforementioned skeleton structure. The window is installed in the window frame 5 of the skeleton structure. By setting the aforementioned skeleton structure, the vehicle body possesses all the advantages of the aforementioned skeleton structure, which will not be elaborated further here.

[0061] The present invention also provides a rail vehicle, which, by setting the above-mentioned frame structure, possesses all the advantages of the above-mentioned frame structure, and the details will not be repeated here.

[0062] It should be noted that in the description of this application, the terms "inner," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integral window frame skeleton connection structure, characterized in that, include: Several window frames are arranged together to form a window area, which is suitable for connecting an exterior wall panel; A node connector is connected between two adjacent window frames; the node connector is bent vertically to form a node bend section, and the node bend section can fit and connect to the wall panel bend section of the exterior wall panel; Several columns are respectively connected to the node connector.

2. The integral window frame skeleton connection structure according to claim 1, characterized in that, The node connectors include: The connecting body is vertically bent to form the node bending segment; Several protruding sections are respectively connected to the connecting body, and extend outward from the connecting body as the center; the window frame and the column can be connected to the connecting body through the protruding sections; Several transition sections are respectively set between two adjacent extension sections.

3. The integral window frame skeleton connection structure according to claim 2, characterized in that, Several of the aforementioned protruding segments include: The two first protruding sections are respectively connected to the adjacent window frames; Several second extension sections are respectively connected to each of the aforementioned columns; The connecting body has a transition section formed between two adjacent first protruding sections, between two adjacent second protruding sections, and between adjacent first protruding sections and second protruding sections.

4. The integral window frame skeleton connection structure according to claim 3, characterized in that, The two first protruding segments are perpendicular to each other, and the transition segment connecting the two first protruding segments is an arc-shaped transition segment.

5. The integral window frame skeleton connection structure according to claim 3, characterized in that, The two first extended segments are arranged collinearly, and the transition segment connecting the two first extended segments is a straight transition segment.

6. The integral window frame skeleton connection structure according to claim 2, characterized in that, The outer surface of the protruding section is constructed as a hat-shaped beam, and the ends of the column and the window frame are respectively constructed with grooves. The protruding section can be slidably assembled with the grooves of the column or the window frame through the hat-shaped beam and achieve three-sided overlapping connection.

7. The integral window frame skeleton connection structure according to any one of claims 1 to 6, characterized in that, The exterior wall panel includes: The first wall has an upper beam connection end at the top, and the first wall has the window area; The second wall has a lower beam connection end at the bottom; The wall panel bending section is provided along the length of the vehicle and connects the first wall and the second wall, and the first wall is set at an angle to the second wall based on the wall panel bending section; the wall panel bending section is located below the lower edge of the window frame; The window area is connected to a node connector at each end along the length of the vehicle.

8. The integral window frame skeleton connection structure according to claim 7, characterized in that, The first wall and the second wall are respectively arranged with a number of horizontal beams and a number of vertical columns at intervals. Each horizontal beam is arranged along the length of the vehicle, and each vertical column is arranged at an angle to the horizontal beam.

9. The integral window frame skeleton connection structure according to claim 8, characterized in that, The window frame includes: The outer window frame is set as a B-shaped beam, and the outer window frame is integrally constructed at the location where the window area is located on the outer wall panel; The inner window frame is fixed at one end to the inner side of the outer window frame and at the other end to the surface of the nearest crossbeam; a continuous bending section is constructed between the two ends of the inner window frame, and the continuous bending section can be closed with the outer window frame to form a U-shaped cavity structure.

10. The integral window frame skeleton connection structure according to claim 8, characterized in that, Also includes: Auxiliary connectors are used to connect the multiple columns.

11. A vehicle body, characterized in that, include: The exterior wall panel is equipped with an integral window frame frame connection structure as described in any one of claims 1 to 10; The window is installed on the window frame of the integral window frame skeleton connection structure.

12. A rail vehicle, characterized in that, Includes the integral window frame frame connection structure as described in any one of claims 1 to 10; or includes the vehicle body as described in claim 11.

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