Side door frame, side wall assembly and rail vehicle

Abstract

This invention relates to the field of rail vehicle technology, providing a side door frame, a side wall assembly, and a rail vehicle. The side door frame includes an upper crossbeam, a lower sill, connectors, and a pair of door posts. The pair of door posts are parallel and spaced apart along a reference direction, and are fixedly connected to the side wall panel. The two ends of the upper crossbeam are correspondingly connected to the upper ends of the pair of door posts, and the upper crossbeam is fixedly connected to the upper beam of the side wall. The lower ends of each pair of door posts are fixedly connected to the lower sill, and the lower sill is fixedly connected to the lower beam of the side wall. Connectors are located on the opposite sides of the pair of door posts, with connectors at both the upper and lower ends of each door post, suitable for fixed connection to the side wall posts. Thus, the side door frame is an independent, integral structure, formed before the side wall assembly and the base frame assembly. It is less affected by assembly errors and tolerance accumulation, and can be adjusted independently, which helps improve the structural dimensional accuracy of the door area installation interface.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and provides a side door frame, a side wall assembly, and a rail vehicle. Background Technology

[0002] The side wall door area is a crucial part of the rail vehicle's body structure, providing an installation interface for the passenger compartment side doors. In related technologies, during the fabrication of the side wall door area, a notch is first pre-drilled in the side wall panel. The door uprights are then welded and fixed to the left and right sides of the pre-drilled notch. The upper door crossbeam and lower door sill are then welded and fixed to the upper beam of the side wall and the side beam of the base frame, respectively. Since the side door area structure is formed after the side wall assembly and the base frame assembly, it is susceptible to manufacturing errors, assembly errors, tolerance accumulation, welding deformation, and other factors, which hinders the control of the structural dimensions and tolerances of the door area installation interface.

[0003] Therefore, how to solve the problem of controlling the structural dimensions and tolerances of the door area installation interface due to the unfavorable side door area structure in related technologies has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0004] This invention provides a side door frame, a side wall assembly, and a rail vehicle to address the shortcomings of related technologies where the side door area structure is not conducive to controlling the structural dimensions and tolerances of the door area installation interface, thereby reducing the difficulty of controlling the structural dimensions and tolerances of the door area installation interface and improving the dimensional accuracy of the door area installation interface.

[0005] This invention provides a side door frame, comprising:

[0006] A pair of doorposts, parallel to each other and spaced apart along a reference direction, wherein the doorposts are adapted to be fixedly connected to the side wall panel;

[0007] A door upper beam is provided at the upper end of a pair of door uprights, and the two ends of the door upper beam are correspondingly connected to the pair of door uprights. The door upper beam is adapted to be fixedly connected to the upper beam of the side wall.

[0008] The lower threshold is parallel to the upper beam of the door. The lower threshold is located at the lower end of a pair of door posts. The lower ends of the pair of door posts are fixedly connected to the lower threshold. The lower threshold is adapted to be fixedly connected to the lower edge beam of the side wall.

[0009] A connector is provided on one side of a pair of door posts that are far apart from each other. Each door post has a connector at both its upper and lower ends. The connector is adapted to be fixedly connected to a side wall post.

[0010] This configuration, with the upper door beam, lower door sill, and a pair of doorposts connecting to form a U-shaped door frame structure, makes the side door frame an independent, integral structure formed before the side wall assembly and base frame assembly. It is less affected by assembly errors and tolerance accumulation, and can be adjusted and repaired separately. This helps improve the structural dimensional accuracy of the door area installation interface and solves the problem in related technologies where the side door area structure is not conducive to the control of the structural dimensions and tolerances of the door area installation interface.

[0011] Moreover, the side door frame provided by the present invention is an independent and integral structure, and the door pillars, upper beams, lower sills and connectors of the side door frame are all connected to the side wall, which can greatly improve the overall strength, rigidity and stability of the side wall assembly formed by its connection with the side wall.

[0012] The connector is used to connect the side door frame and the side wall. The connector and the side door frame are pre-assembled and adjusted in advance, which can avoid the problem of deformation and adjustment difficulties caused by welding the connector after the side wall assembly is formed.

[0013] According to a side door frame provided by the present invention, the upper door beam is disposed between a pair of door posts, and the end face of the upper door beam is fixedly connected to the door posts;

[0014] The inner side of the upper beam of the side wall has a first through groove extending along the reference direction. The first through groove has an upper side wall and a lower side wall. The upper beam of the door is embedded in the first through groove.

[0015] The upper end of the door post is provided with a clearance notch to avoid the upper and lower side walls of the first through groove, so that the upper end of the door post can be inserted into the first through groove from the inside of the upper beam of the side wall.

[0016] With this configuration, the upper crossbeam of the door is embedded in the first through slot, and the placement of the upper crossbeam of the side door frame does not affect the thickness of the upper beam on the side wall. Furthermore, the upper end of the doorpost can be inserted into the first through slot of the upper beam on the side wall, until the doorpost abuts against the inner side of the side wall panel. The clearance notch on the doorpost and the upper and lower side walls of the upper beam on the side wall allow for positioning of the doorpost and the upper beam, as well as the doorpost and the side wall panel, which helps improve the installation accuracy of the side door frame on the side wall.

[0017] According to a side door frame provided by the present invention, the upper side of the door upper beam has a second through groove extending along the reference direction, and a reinforcing seat is provided in the second through groove, the reinforcing seat being fixedly connected to each side wall of the second through groove.

[0018] This design, with the reinforcement seat, increases the rigidity and strength of the upper beam of the door, and improves the structural rigidity, strength, and stability of the side door frame.

[0019] According to a side door frame provided by the present invention, at least two reinforcing seats are provided, and each of the reinforcing seats is spaced apart along the reference direction;

[0020] And / or, the reinforcing seat includes a base plate, a first bent plate, a second bent plate, and a third bent plate, the base plate being perpendicular to the reference direction, the first bent plate, the second bent plate, and the third bent plate being perpendicular to the base plate, and the first bent plate, the second bent plate, and the third bent plate being adapted to be fixedly connected to each sidewall of the second through groove.

[0021] This configuration, by increasing the number of reinforcing seats, can enhance the stiffness and strength of the door's upper beam at various locations, uniformly improving its rigidity and strength. The first, second, and third bending plates of the reinforcing seats enhance their stiffness and strength, and also increase support for the door's upper beam, further improving its rigidity and strength.

[0022] According to a side door frame provided by the present invention, the length of the lower threshold along the reference direction is greater than the distance between a pair of door posts along the reference direction, the two ends of the lower threshold extend to the side of the pair of door posts that are far apart, and the two ends of the lower threshold are adapted to support the side wall posts.

[0023] This design, which utilizes the lower threshold to support the side wall columns, improves the structural stability of the side walls.

[0024] According to a side door frame provided by the present invention, the lower end of the door post is formed with a slot with an open lower end, and the lower threshold is embedded in the slot, the shape of the slot matching the shape of the lower threshold.

[0025] This design improves the fit between the lower end of the doorpost and the lower sill, resulting in higher relative stability. Furthermore, the placement of the doorpost on the side door frame does not affect the thickness of the side wall. Additionally, welding the doorpost and lower sill together improves welding quality and enhances the connection strength between them.

[0026] A side door frame according to the present invention further includes:

[0027] A corner reinforcement is provided, wherein the upper door beam, the lower door sill, and a pair of door posts form a U-shaped door frame structure. The corner reinforcement is disposed within the U-shaped door frame structure, and one corner reinforcement is disposed at each corner of the U-shaped door frame structure. The corner reinforcement is fixedly connected to the door posts, and the corner reinforcement is also fixedly connected to one of the upper door beam and the lower door sill.

[0028] This design strengthens the corner structure and increases the body strength in areas of stress concentration by using corner reinforcement components.

[0029] According to the present invention, a side door frame is provided, wherein the corner reinforcement is a stamped and bent part, the corner reinforcement includes an arc panel and a pair of fourth bent plates, the pair of fourth bent plates are distributed along the inner and outer directions of the side wall, the fourth bent plates are fixedly connected to the U-shaped door frame structure, and the arc panel forms a rounded corner at the corner of the U-shaped door frame structure.

[0030] With this design, the corner reinforcement is a hollow structure. When connected to the doorpost, upper door beam, and lower door sill, only the edge of the fourth bend plate needs to be welded for fixation. Compared to making the corner reinforcement a solid block structure, the corner reinforcement provided by this invention is more conducive to ensuring welding quality.

[0031] The present invention also provides a side wall assembly, including the aforementioned side door frame.

[0032] The present invention also provides a rail vehicle, including the side door frame described above, or including the side wall assembly described above.

[0033] The side door frame provided by this invention includes an upper door beam, a lower door sill, connectors, and a pair of door posts. The pair of door posts are parallel to each other and spaced apart along a reference direction. The upper door beam and the lower door sill are parallel to each other, with the upper door beam located at the upper end of the pair of door posts and the lower door sill located at the lower end of the pair of door posts. Both ends of the upper door beam are connected to the pair of door posts, and the lower ends of both door posts are fixedly connected to the lower door sill. The upper door beam, lower door sill, and pair of door posts together form a U-shaped door frame structure. A door area is reserved on the side wall, with the edge of the door area consisting of an upper side wall beam, a lower side wall beam, and a side wall panel. The upper door beam of the side door frame provided by this invention is used for fixed connection to the upper side wall beam, the lower door sill is used for fixed connection to the lower side wall beam, and the door posts are used for fixed connection to the side wall panel. Connectors are located on the side of the pair of door posts that are far apart from each other, and each door post has connectors at both its upper and lower ends. Side wall columns are also installed on the side wall panels, and connectors are used to fix them to the side wall columns. This arrangement, through the connection of the upper door beam, lower door sill, and a pair of door columns, forms a U-shaped door frame structure. The side door frame is an independent, integral structure, formed before the overall assembly of the side wall and the base frame. It is less affected by assembly errors and tolerance accumulation, and can be adjusted independently. This helps improve the structural dimensional accuracy of the door area installation interface, solving the problem in related technologies where the side door area structure is unfavorable for controlling the structural dimensions and tolerances of the door area installation interface.

[0034] Furthermore, the side wall assembly provided by the present invention also possesses the various advantages described above due to the presence of the side door frame as described above.

[0035] Furthermore, the rail vehicle provided by the present invention also possesses the various advantages described above due to having the side door frame or side wall assembly as described above. Attached Figure Description

[0036] 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.

[0037] Figure 1 This is a structural schematic diagram of the side door frame provided by the present invention from one viewpoint.

[0038] Figure 2 yes Figure 1 A magnified view of the Chinese character "S".

[0039] Figure 3 This is a structural schematic diagram of the side door frame provided by the present invention from another perspective.

[0040] Figure 4 This is a schematic diagram of the structure of the side door frame provided by the present invention when it is installed on the side wall.

[0041] Figure 5 yes Figure 4 A magnified view of point P in the middle.

[0042] Figure 6 yes Figure 4 A magnified view of point Q in the middle.

[0043] Figure 7 yes Figure 4 A magnified view of point R in the middle.

[0044] Figure 8 This is a schematic diagram of the cross-sectional shape of the top beam on the side wall provided by the present invention.

[0045] Figure 9 This is a schematic diagram of the structure of the door upper beam and reinforcing seat provided by the present invention.

[0046] Figure 10 This is a schematic diagram of the reinforcing seat provided by the present invention.

[0047] Figure 11 This is a structural schematic diagram of the corner reinforcement component provided by the present invention.

[0048] Figure 12 This is a schematic diagram of the slot structure at the lower end of the door post provided by the present invention.

[0049] Figure 13This is a schematic diagram showing the relative positions of the lower side beam of the side wall and the lower threshold provided by the present invention.

[0050] Figure label:

[0051] 1. Door post; 2. Side wall panel; 3. Door top beam; 4. Side wall top beam; 5. Lower threshold; 6. Side wall bottom beam; 7. Connector; 8. Side wall post; 9. First through groove; 10. Upper side wall; 11. Lower side wall; 12. Clearance notch; 13. Second through groove; 14. Reinforcing seat; 15. Base plate; 16. First bent plate; 17. Second bent plate; 18. Third bent plate; 19. Slot; 20. Door corner reinforcement; 21. Curved panel; 22. Fourth bent plate. Detailed Implementation

[0052] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0053] The following is combined Figures 1 to 13 The side door frame of the present invention is described.

[0054] like Figures 1 to 13 As shown, the side door frame provided in this embodiment of the invention includes an upper door beam 3, a lower door sill 5, a connector 7, and a pair of door posts 1.

[0055] Specifically, a pair of doorposts 1 are parallel to each other and spaced apart along a reference direction. When the side door frame is installed on the side wall, the reference direction is consistent with the longitudinal direction of the side wall. Figure 4 and Figure 1 The direction indicated by m.

[0056] The upper door beam 3 and the lower door sill 5 are parallel to each other. The upper door beam 3 is located at the upper end of a pair of doorposts 1, and the lower door sill 5 is located at the lower end of a pair of doorposts 1. The two ends of the upper door beam 3 are connected to the pair of doorposts 1 respectively, and the lower ends of the pair of doorposts 1 are fixedly connected to the lower door sill 5. The upper door beam 3, the lower door sill 5 and the pair of doorposts 1 together form a U-shaped door frame structure.

[0057] The side wall includes an upper side beam 4, a lower side beam 6, a side wall panel 2, and a side wall column 8. The upper side beam 4 and the lower side beam 6 are distributed vertically and extend along a reference direction. The side wall panel 2 is located between the upper side beam 4 and the lower side beam 6. A door area is reserved on the side wall. The edge of the door area is occupied by the upper side beam 4, the lower side beam 6, and the side wall panel 2. Outside the door area, the upper end of the side wall panel 2 is fixedly connected to the lower edge of the upper side beam 4, and the lower end of the side wall panel 2 is fixedly connected to the upper edge of the lower side beam 6. The side wall panel 2 is substantially aligned with the outer sides of the upper side beam 4 and the lower side beam 6. The side wall column 8 is located inside the side wall panel 2 and is fixedly connected to the upper side beam 4 and the lower side beam 6.

[0058] The side door frame provided in this embodiment of the invention has an upper door crossbeam 3 for fixed connection with the upper side beam 4 of the side wall, a lower door sill 5 for fixed connection with the lower side beam 6 of the side wall, and a door post 1 for fixed connection with the side wall panel 2.

[0059] Connector 7 is provided on the opposite side of a pair of doorposts 1, with connector 7 provided at both the top and bottom ends of each doorpost 1. Side wall posts 8 are also provided on the side wall panel 2, and connector 7 is used to fix them to the side wall posts 8.

[0060] This configuration, with the upper door beam 3, lower door sill 5, and a pair of doorposts 1 connected to form a U-shaped door frame structure, makes the side door frame an independent, integral structure formed before the side wall assembly and the base frame assembly. It is less affected by assembly errors and tolerance accumulation, and can be adjusted and repaired separately. This helps to improve the structural dimensional accuracy of the door area installation interface and solves the problem in related technologies where the side door area structure is not conducive to the control of the structural dimensions and tolerances of the door area installation interface.

[0061] Moreover, the side door frame provided in this embodiment of the invention is an independent and integral structure, and the door post 1, the upper beam 3, the lower threshold 5 and the connector 7 of the side door frame are all connected to the side wall, which can greatly improve the overall strength, rigidity and stability of the side wall assembly formed by its connection with the side wall.

[0062] Connector 7 is used to connect the side door frame and the side wall. Connector 7 and the side door frame are pre-assembled and adjusted in advance, which can avoid the problem of deformation and adjustment difficulties caused by welding the connector after the side wall assembly is formed.

[0063] In this embodiment of the invention, the upper door beam 3 is disposed between a pair of door posts 1, and the end face of the upper door beam 3 is fixedly connected to the door posts 1. A first through groove 9 is provided on the inner side of the upper beam 4 on the side wall. The first through groove 9 extends along a reference direction, and the opening of the first through groove 9 faces the inner side of the side wall.

[0064] Specifically, the top beam 4 on the side wall is a stamped and bent piece, and its cross-sectional shape is as follows: Figure 8 As shown.

[0065] When the side door frame is assembled and connected to the side wall, the side door frame is located inside the side wall, the upper door beam 3 corresponds to the position of the first through groove 9, and the upper door beam 3 is embedded in the first through groove 9. The setting of the upper door beam 3 of the side door frame does not affect the thickness of the upper beam 4 on the side wall.

[0066] The end face of the upper beam 3 of the door is connected to the door post 1. Simultaneously, the upper beam 3 corresponds to the first through groove 9, and the upper end of the door post 1 also corresponds to the first through groove 9. The first through groove 9 has an upper side wall 10 and a lower side wall 11. The upper end of the door post 1 is provided with a clearance notch 12, which is used to avoid the upper side wall 10 and lower side wall 11 of the first through groove 9. In this way, the upper end of the door post 1 can be inserted into the first through groove 9 of the upper beam 4 of the side wall, until the door post 1 abuts against the inner side of the side wall panel 2.

[0067] It should be noted that multiple reinforcing plates are provided on the inner side of the side wall panel 2, with the reinforcing plates spaced apart along the vertical direction, and each reinforcing plate is fixedly connected to the side wall panel 2. The reinforcing plates are bent plates, with protrusions and grooves extending along a reference direction. A recessed portion and a protruding portion are also provided on the side of the doorpost 1 closest to the side wall panel 2. The recessed portion matches the protrusion on the side wall panel 2, and the protruding portion matches the groove on the side wall panel 2. Thus, when the doorpost 1 abuts against the side wall panel 2, each position of the doorpost 1 conforms to the shape of the side wall panel 2 and the reinforcing plates. Welding the doorpost 1 to the side wall panel 2 and the reinforcing plates improves welding quality and connection strength.

[0068] By combining the raised grooves on the reinforcing plate with the raised and recessed parts on the door post 1, as well as the clearance notch 12 on the door post 1 and the upper side wall 10 and lower side wall 11 of the side wall upper beam 4, the door post 1 and the side wall upper beam 4 can be positioned, and the door post 1 and the side wall panel 2 can be positioned, which helps to improve the installation position accuracy of the side door frame on the side wall.

[0069] In this embodiment, a second through groove 13 is provided on the upper side of the door crossbeam 3, and the second through groove 13 extends along a reference direction. (Refer to...) Figure 9 The opening of the second through groove 13 is set facing upward, and the opening of the second through groove 13 corresponds to the upper side wall 10 of the first through groove 9.

[0070] Specifically, the upper beam 3 of the door is a stamped and bent part.

[0071] After the door beam 3 is embedded in the first through groove 9, the door beam 3 fills the first through groove 9 of the side wall top beam 4, and the side of the door beam 3 away from the side wall panel 2 is flush with the inner edge of the side wall top beam 4.

[0072] Multiple weight-reducing holes are provided on the side of the door beam 3 away from the side wall panel 2, and the multiple weight-reducing holes are distributed at intervals.

[0073] A reinforcing seat 14 is provided in the second through groove 13, and the reinforcing seat 14 is fixedly connected to each side wall of the second through groove 13. The setting of the reinforcing seat 14 increases the rigidity and strength of the upper beam 3 of the door, and improves the rigidity, strength and stability of the side door frame structure.

[0074] In some embodiments, at least two reinforcing seats 14 are provided, and each reinforcing seat 14 is spaced apart along the reference direction to increase the stiffness and strength of the upper door beam 3 at various positions and uniformly improve the stiffness and strength of the upper door beam 3.

[0075] In some embodiments, the reinforcing seat 14 includes a base plate 15, a first bent plate 16, a second bent plate 17, and a third bent plate 18. The base plate 15 is perpendicular to a reference direction, and the first bent plate 16, second bent plate 17, and third bent plate 18 are all perpendicular to the base plate 15. Specifically, the first bent plate 16 is located on the side of the base plate 15 closest to the side wall panel 2, the second bent plate 17 is located at the lower end of the base plate 15, and the third bent plate 18 is located on the side of the base plate 15 furthest from the side wall panel 2. The first bent plate 16, second bent plate 17, and third bent plate 18 are used for fixed connection with the respective side walls of the second through groove 13, such as... Figure 9 and Figure 10 As shown.

[0076] In addition to serving as connecting parts for connecting the upper door beam 3, the first bending plate 16, the second bending plate 17, and the third bending plate 18 can also increase the support for the upper door beam 3, further improving the rigidity and strength of the upper door beam 3.

[0077] The first bending plate 16, the second bending plate 17, and the third bending plate 18 are all integrally formed with the base plate 15. Specifically, the reinforcing seat 14 is configured as a stamped bending part, formed by stamping and bending the steel plate using a stamping die. Bending ribs are formed at the connection points between the first bending plate 16 and the base plate 15, the second bending plate 17 and the base plate 15, and the third bending plate 18 and the base plate 15, which helps to improve the rigidity of the reinforcing seat 14.

[0078] In this embodiment of the invention, the lower threshold 5 is disposed below the doorpost 1, and the lower end of the doorpost 1 is connected to the upper surface of the lower threshold 5. The length of the lower threshold 5 along the reference direction is greater than the distance between a pair of doorposts 1 along the reference direction, and both ends of the lower threshold 5 extend to the side of the pair of doorposts 1 that is far apart.

[0079] A notch is pre-reserved in the lower side beam 6 corresponding to the door area. When the lower sill 5 is fixed to the lower side beam 6, the lower sill 5 fills the notch, and both ends of the lower sill 5 extend into the lower side beam 6 at the positions on both sides of the notch, as shown in the reference. Figure 13 The end of the lower threshold 5 overlaps with the lower side beam 6 of the side wall, together supporting the side wall column 8.

[0080] The lower end of the side wall column 8 extends above the lower threshold 5, which supports the side wall column 8.

[0081] In the side door frame provided in this embodiment, the door post 1 and the side wall post 8 are fixedly connected by the connector 7, and the lower sill 5 is fixedly connected to the side wall post 8, which improves the connection strength between the side door frame and the side wall and helps to improve the stability of the side wall assembly.

[0082] In this embodiment, a slot 19 is formed at the lower end of the doorpost 1, and the slot 19 is open downwards. The lower sill 5 is fitted into the slot 19, and the shape of the slot 19 matches the shape of the lower sill 5, which improves the fit between the lower end of the doorpost 1 and the lower sill 5, resulting in higher relative stability. Moreover, the installation of the doorpost 1 in the side door frame does not affect the thickness of the side wall. In addition, welding the doorpost 1 and the lower sill 5 together improves the welding quality and the connection strength between the doorpost 1 and the lower sill 5.

[0083] Specifically, the door post 1 is formed by processing tubing.

[0084] In this embodiment of the invention, the side door frame further includes corner reinforcement members 20. The corner reinforcement members 20 are disposed within the U-shaped door frame structure, and one corner reinforcement member 20 is disposed at each corner of the U-shaped door frame structure. The corner reinforcement members 20 are fixedly connected to the door post 1, and are also fixedly connected to one of the upper door beam 3 and the lower door sill 5.

[0085] Specifically, for the corner formed by the connection between the doorpost 1 and the upper door beam 3, the corner reinforcement 20 is fixedly connected to both the doorpost 1 and the upper door beam 3, thereby improving the structural strength of the connection between the doorpost 1 and the upper door beam 3. Similarly, for the corner formed by the connection between the doorpost 1 and the lower door sill 5, the corner reinforcement 20 is fixedly connected to both the doorpost 1 and the lower door sill 5, thereby improving the structural strength of the connection between the doorpost 1 and the lower door sill 5.

[0086] The corner reinforcement 20 can strengthen the corner structure and improve the strength of the side wall assembly in the stress concentration area.

[0087] In this embodiment, the corner reinforcement 20 includes an arc panel 21 and a pair of fourth bent plates 22. The arc panel 21 forms rounded corners at the corners of the U-shaped door frame structure. The pair of fourth bent plates 22 are distributed along the inner and outer directions of the side wall and are fixedly connected to the U-shaped door frame structure. The edges of the fourth bent plates 22 away from the arc panel 21 are two mutually perpendicular straight edges, so that one straight edge of the fourth bent plate 22 is fixedly connected to the door post 1, and one of the upper door beam 3 and the lower door sill 5 is fixedly connected to the other straight edge of the fourth bent plate 22.

[0088] The corner reinforcement 20 is a hollow structure. When it is connected to the door post 1, the upper door beam 3, and the lower door sill 5, only the edge of the fourth bending plate 22 needs to be welded and fixed. Compared to making the corner reinforcement 20 a solid block structure, the corner reinforcement 20 provided in this embodiment is more conducive to ensuring welding quality.

[0089] The aforementioned pair of fourth bent plates 22 are both integrally formed with the curved panel 21. Specifically, the corner reinforcement 20 is set as a stamped bent part, formed by stamping and bending the steel plate using a stamping die. A bending rib is formed at the position where the fourth bent part connects with the curved panel 21, which helps to improve the rigidity of the corner reinforcement 20.

[0090] In some embodiments, the side wall columns 8 are set in an inclined shape, as shown in the reference. Figure 4 The connector 7 used to connect the door post 1 and the side wall post 8 needs to be designed according to the inclination of the side wall post 8 and the distance between the side wall post 8 and the door post 1.

[0091] For the connection structure at the upper end of the side wall column 8 and the door column 1, refer to Figure 5 The end face of the side wall post 8 is inclined relative to its extension direction, so that the end face of the side wall post 8 is in close contact with the side of the door post 1. For the connector 7 at this location, the main body of the connector 7 is welded and fixed to the door post 1, while the main body of the connector 7 is connected to the side of the side wall post 8 away from the side wall panel 2. The connector 7 has a first extension portion, which is inclined at the same angle as the side wall post 8, so that the first extension portion is in close contact with the downward-facing surface of the side wall post 8. This connector 7 connects to the side wall post 8 from different positions and directions, making the connection structure between the connector 7 and the side wall post 8 more stable.

[0092] For the connection structure at the lower end of the side wall column 8 and the door column 1, refer to Figure 6 and Figure 7The lower end of the side wall post 8 is directly connected to the lower sill 5, with a gap between the lower end of the door post 1 and the lower end of the side wall post 8. At this time, the connector 7 is set as a connecting beam extending along the reference direction, with one end of the connecting beam welded and fixed to the door post 1. The other end of the connecting beam is provided with a second extension, the inclination angle of which is consistent with the inclination angle of the side wall post 8, so that the second extension is in close contact with the upward-facing surface of the side wall post 8.

[0093] In this embodiment, the fixed connection between the various components forming the side door frame is achieved by spot welding or segment welding.

[0094] On the other hand, embodiments of the present invention also provide a side wall assembly, including the side door frame provided in any of the above embodiments. The side door frame provided in any of the above embodiments is a separate, integral structure, which is beneficial for improving the structural dimensional accuracy of the door area installation interface. Therefore, the side wall assembly in this embodiment has the advantages of high structural dimensional accuracy and high strength and rigidity of the door area installation interface. The derivation process of the beneficial effects of the side wall assembly in the embodiments of the present invention is largely similar to the derivation process of the beneficial effects of the side door frame described above, and therefore will not be repeated here.

[0095] In another aspect, embodiments of the present invention also provide a rail vehicle, including the side door frame or side wall assembly provided in any of the above embodiments. It possesses all the advantages of the aforementioned side door frame or side wall, which will not be elaborated further here.

[0096] The derivation process of the beneficial effects of the rail vehicle in the embodiments of the present invention is largely similar to the derivation process of the beneficial effects of the side door frame or side wall assembly described above, so it will not be repeated here.

[0097] The rail vehicles provided in this embodiment of the invention can be high-speed trains, bullet trains, urban rail trains, etc.

[0098] 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. A side door frame, characterized in that, include: A pair of doorposts (1) are parallel to each other and spaced apart along a reference direction, and the doorposts (1) are adapted to be fixedly connected to the side wall panels (2); A door upper beam (3) is provided at the upper end of a pair of door posts (1), and the door upper beam (3) is provided between the pair of door posts (1). The two ends of the door upper beam (3) are correspondingly connected to the pair of door posts (1), and the end face of the door upper beam (3) is fixedly connected to the door posts (1). The door upper beam (3) is adapted to be fixedly connected to the upper beam (4) on the side wall. The inner side of the upper beam (4) on the side wall has an extension along the reference direction. The first through groove (9) extends, the first through groove (9) has an upper side wall (10) and a lower side wall (11), the upper beam (3) of the door is embedded in the first through groove (9); the upper end of the door post (1) is provided with a clearance notch (12) for avoiding the upper side wall (10) and lower side wall (11) of the first through groove (9), so that the upper end of the door post (1) is inserted into the first through groove (9) from the inside of the upper beam (4) of the side wall; The lower threshold (5) is parallel to the upper beam (3) of the door. The lower threshold (5) is located at the lower end of a pair of door posts (1). The lower ends of the pair of door posts (1) are fixedly connected to the lower threshold (5). The lower threshold (5) is suitable for fixed connection with the lower side beam (6) of the side wall. A connector (7) is provided on one side of a pair of door pillars (1) that are far apart from each other. The connector (7) is provided at both the upper and lower ends of each door pillar (1). The connector (7) is adapted to be fixedly connected to the side wall pillar (8).

2. The side door frame according to claim 1, characterized in that, The upper side of the door crossbeam (3) has a second through groove (13) extending along the reference direction. A reinforcing seat (14) is provided in the second through groove (13), and the reinforcing seat (14) is fixedly connected to each side wall of the second through groove (13).

3. The side door frame according to claim 2, characterized in that, At least two reinforcing seats (14) are provided, and each reinforcing seat (14) is spaced apart along the reference direction; And / or, the reinforcing seat (14) includes a base plate (15), a first bent plate (16), a second bent plate (17) and a third bent plate (18), the base plate (15) being perpendicular to the reference direction, the first bent plate (16), the second bent plate (17) and the third bent plate (18) being perpendicular to the base plate (15), and the first bent plate (16), the second bent plate (17) and the third bent plate (18) being adapted to be fixedly connected to each sidewall of the second through groove (13).

4. The side door frame according to any one of claims 1-3, characterized in that, The length of the lower threshold (5) along the reference direction is greater than the distance between the pair of door posts (1) along the reference direction. The two ends of the lower threshold (5) extend to the side of the pair of door posts (1) that are far apart. The two ends of the lower threshold (5) are adapted to support the side wall posts (8).

5. The side door frame according to claim 4, characterized in that, The lower end of the door post (1) has a slot (19) with an open lower end, and the lower threshold (5) is embedded in the slot (19). The shape of the slot (19) matches the shape of the lower threshold (5).

6. The side door frame according to any one of claims 1-3, characterized in that, Also includes: A door corner reinforcement (20) is provided. The upper door beam (3), the lower door sill (5) and a pair of door posts (1) form a U-shaped door frame structure. The door corner reinforcement (20) is provided inside the U-shaped door frame structure, and a door corner reinforcement (20) is provided at each corner of the U-shaped door frame structure. The door corner reinforcement (20) is fixedly connected to the door posts (1), and the door corner reinforcement (20) is also fixedly connected to one of the upper door beam (3) and the lower door sill (5).

7. The side door frame according to claim 6, characterized in that, The corner reinforcement (20) is a stamped and bent part. The corner reinforcement (20) includes an arc panel (21) and a pair of fourth bent plates (22). The pair of fourth bent plates (22) are distributed along the inside and outside direction of the side wall. The fourth bent plates (22) are fixedly connected to the U-shaped door frame structure. The arc panel (21) forms a rounded corner at the corner of the U-shaped door frame structure.

8. A sidewall assembly, characterized in that, Includes the side door frame as described in any one of claims 1 to 7.

9. A rail vehicle, characterized in that, Includes the side door frame as described in any one of claims 1 to 7, or includes the side wall assembly as described in claim 8.

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