Side wall structure, vehicle body and railway vehicle

Abstract

The invention provides a side wall structure, a vehicle body and a railway vehicle. The side wall structure is characterized in that a roof side rail is arranged in the length direction of a vehicle, and a door area and a plurality of window areas are formed below the roof side rail; the door upper cross beam assembly is fixedly connected to the top of the door area and connected with the upper edge beam. Wherein the door upper cross beam assembly and the upper edge beam are fixedly connected to form a square-shaped cavity structure, the door upper cross beam assembly comprises a plurality of supporting frames, and each supporting frame is installed in the square-shaped cavity structure and fixedly connected with the inner surface of the upper edge beam. The side wall structure can locally thicken the upper edge beam at the top of the door area by utilizing the door upper cross beam assembly based on mechanical topology analysis, so that the structural strength of the door area is improved; in addition, the door upper cross beam assembly is arranged to be of a square cavity structure, a supporting frame is additionally arranged in the cavity structure, and therefore the structural strength and reliability are further improved in the vehicle width direction, the weight increase of the side wall structure is within a controllable range, and the service life of the side wall structure is prolonged. Therefore, the side wall structure achieves the balance between meeting the strength reliability and meeting the light weight requirement.

Description

Technical Field

[0001] The invention relates to the field of rail transit and provides a side wall structure and a vehicle body, and an urban virtual rail vehicle. Background Art

[0002] With the continuous development of my country's rail lines, in order to improve the rail transit network system, virtual rail trains, as a new type of vehicle system, have been widely used and promoted in urban rail transit. At this stage, high-efficiency transportation has put forward new requirements for the safety design of virtual rail trains. The body profile can effectively improve the safety factor of the vehicle. As an important part of the vehicle system, the side wall structure is particularly important for the safety, reliability and lightweight of its structural design.

[0003] The existing side wall structures of virtual rail trains are welded structures that combine beams, columns and skin profiles, or large-section aluminum profiles with splice welding structures; there are also profiles that are formed by integral extrusion of the mask. The former structure not only ensures the strength of the vehicle body, but also provides passengers with a spacious interior space. However, this traditional side wall structure is too heavy and cannot meet the overall lightweight requirements of the vehicle. Although the latter structure can improve the assembly accuracy of the side wall as a whole and is easier to meet the lightweight requirements of the vehicle body, the universality of the profile is not good, which is not conducive to the maintenance and repair and replacement of local positions after the vehicle is in operation. In addition, in the above-mentioned side wall structure, the door area, window area and key connection between the mask and the column of the side wall are prone to stress concentration problems, which makes it more likely to have insufficient strength defects, making it more difficult for the side wall structure to achieve a balance between meeting the strength reliability and meeting the lightweight requirements. Summary of the invention

[0004] The present invention provides a side wall structure, a vehicle body, and an urban virtual rail vehicle, so as to solve the defect in the related art that it is more difficult to achieve a balance between meeting the strength reliability and meeting the lightweight requirements of the side wall structure, so as to achieve that the side wall structure meets the strength reliability requirements of the vehicle body on the basis of meeting the lightweight requirements of the vehicle body.

[0005] The side wall structure of the present invention comprises an upper side beam and an upper door cross beam.

[0006] The upper side beam is arranged along the vehicle length direction, and the lower part of the upper side beam constitutes a door area and a plurality of window areas.

[0007] The door upper cross beam is fixed to the top of the door area and connected to the upper side beam.

[0008] Among them, the upper door cross beam is fixedly connected to the upper side beam to form a U-shaped cavity structure. The upper door cross beam includes a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam.

[0009] According to a side wall structure of the present invention, the cross beam on the door comprises a main beam body and a plurality of support frames.

[0010] The main beam body is fixedly connected to the inner surface of the upper side beam, and the top and bottom of the main beam body are respectively fixedly connected to the inner surface of the upper side beam, so that the main beam body and the upper side beam are combined to form the U-shaped cavity structure with a closed cross-section.

[0011] A plurality of support frames are respectively connected to the main beam body and the inner surface of the upper side beam.

[0012] According to a side wall structure of the present invention, the main beam body includes a first connecting end and a second connecting end.

[0013] The first connecting end is arranged at the top of the main beam body, the first connecting end is bent toward the upper side beam to form a B-beam structure, and the top connecting end of the upper side beam is bent toward the main beam body to form a B-beam structure, and the end surface of the first connecting end after being bent abuts against and is fixedly connected to the end surface of the top connecting end of the upper side beam after being bent.

[0014] The second connecting end is arranged at the bottom of the main beam body, the second connecting end is bent toward the upper side beam to form a C-beam structure, and the end surface of the bent first connecting end abuts against and is fixedly connected to the inner surface of the bottom connecting end of the upper side beam.

[0015] According to a side wall structure of the present invention, the door upper crossbeam composition further includes a plurality of fixing holes, a plurality of stoppers and a plurality of riveted nuts.

[0016] A plurality of fixing holes are constructed on the surface of the main beam body.

[0017] A plurality of stopper parts are respectively fixedly connected to the surface of the main beam body facing the upper side beam, and each of the stopper parts is fixedly connected beside each of the fixing holes in a one-to-one correspondence.

[0018] A plurality of riveted nuts are respectively fixed on the surface of the main beam body facing the upper side beam.

[0019] According to a side wall structure of the present invention, the plurality of support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged at intervals and fixedly connected to the surface of the main beam body facing the upper side beam, and the first support frame and the second support frame are respectively arranged along the vehicle height direction.

[0020] The first support frame and the second support frame are respectively bent to form an "I" shape, and the bending directions of the first support frame and the second support frame are opposite.

[0021] Wherein, the fixing hole and the stopping portion are arranged between each of the first supporting frames and the previous second supporting frame.

[0022] Wherein, the rivet nut is arranged between each of the first supporting frames and the next second supporting frame.

[0023] According to a side wall structure of the present invention, the side wall structure also includes a pair of door columns, a pair of end columns, a plurality of window columns and a pair of window lower cross beams.

[0024] A pair of door posts are respectively arranged on both sides of the door area.

[0025] A pair of end columns are respectively arranged at both ends of the vehicle body.

[0026] A plurality of window columns are respectively arranged between the door columns and the end columns.

[0027] A pair of window lower cross beams are arranged below the upper side beams along the vehicle length direction, and each end column is connected to the door column on the corresponding side through the window lower cross beams.

[0028] Wherein, all the door columns, window columns and end columns are arranged along the vehicle height direction.

[0029] The tops of all the door columns, window columns and end columns are connected to the upper side beams, and the bottoms of all the window columns are connected to the window lower cross beams on the corresponding sides.

[0030] Wherein, a reinforcement structure is installed at the connection between at least one of the door column, the window column and the end column and the cross beam under the window.

[0031] According to a side wall structure of the present invention, the position where the door pillar is connected to the end of the window lower cross beam on the corresponding side is the first connection point.

[0032] The reinforcement structure includes a first reinforcement plate and a backing plate.

[0033] The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixed to the outer surface of the first connection.

[0034] The pad connects the side surface of the door column and the end surface of the window lower beam.

[0035] According to a side wall structure of the present invention, the position where the end of the window column and the cross beam under the window are connected is the second connection point, and the reinforcement structure includes a first reinforcement plate, a second reinforcement plate and a pad; the first reinforcement plate is a rectangular plate, and the first reinforcement plate is fixed to the inner surface of the second connection point; the second reinforcement plate is a T-shaped plate, and the second reinforcement plate is fixed to the outer surface of the second connection point; the pad connects the end face of the window column and the upper surface of the cross beam under the window.

[0036] According to a side wall structure of the present invention, the position where the end column and the end of the window beam under the corresponding side are connected is the third connection; the reinforcement structure includes a first reinforcement plate and a pad; the first reinforcement plate is a rectangular plate, and the first reinforcement plate is fixed to the outer surface of the third connection; the pad connects the side surface of the end column and the end face of the window beam under the corresponding side.

[0037] According to a side wall structure of the present invention, the side wall structure further comprises a plurality of slide grooves, wherein the slide grooves are suitable for installing skirt boards, and the slide grooves are arranged at intervals and fixed to the lower surface of the cross beam under the window.

[0038] A vehicle body of the present invention comprises the side wall structure as described above, a roof, a plurality of decorative panels and a plurality of skirt panels.

[0039] A side wall structure, wherein a vehicle door is installed in a door area of ​​the side wall structure, and windows are installed in all window areas of the side wall structure.

[0040] A roof is connected to the top of the side wall structure.

[0041] A plurality of decorative panels respectively cover and are connected to the upper side beams of the side wall structure, and the top of the vehicle door and the top of all the windows are provided with the decorative panels.

[0042] A plurality of skirt panels respectively cover and are connected to the bottom of each of the windows.

[0043] According to a vehicle body of the present invention, the top of the window is bonded to the outer surface of the upper side beam, and the bottom of the window is bonded to the outer surface of the lower cross beam of the window; the two side edges of the window are respectively bonded to the outer surface of the door pillar and the outer surface of the window pillar, or respectively bonded to the outer surface of the end pillar and the outer surface of the window pillar.

[0044] According to a vehicle body of the present invention, the vehicle roof comprises an outer shed plate and an inner connecting beam, the top and the bottom of the inner connecting beam are respectively fixed to the inner surface of the outer shed plate, and the inner connecting beam is configured with at least one step portion.

[0045] The roof rail includes a first mounting portion, a second mounting portion and a third mounting portion.

[0046] The first mounting portion is a U-beam structure and can be assembled with the step portion through sliding cooperation. The assembled first mounting portion is fixed to the step portion through welding.

[0047] The second mounting portion is integrally connected to the bottom of the first mounting portion, the outer surface of the second mounting portion is connected to the decorative plate, and the decorative plate is connected to the bottom of the outer shelf plate.

[0048] The third mounting portion is an L-shaped beam structure. The third mounting portion is integrally connected to the bottom of the second mounting portion, and the top of the window body is bonded to the outer surface of the third mounting portion.

[0049] According to a vehicle body of the present invention, the vehicle body also includes an end wall, the end wall is constructed with at least one connecting part, the end column is constructed with a fourth mounting part, the connecting part and the fourth mounting part are both U-beam structures, the fourth mounting part can be assembled with the connecting part of the end wall by sliding fit, the assembled fourth mounting part is fixed to the connecting part by welding; the outer surface of the fourth mounting part is connected to the window body.

[0050] According to a vehicle body of the present invention, the skirt panel includes a skirt cover plate and a folding portion, the folding portion is configured to be a U-shaped hook, one end of the folding portion is connected to the top end of the skirt cover plate via a rotating shaft, the other end of the folding portion is provided with a horizontal extension section, the lower surface of the cross beam under the window of the side wall structure is connected with a slide groove, the bottom of the slide groove is provided with an opening, and the horizontal extension section is connected to the opening of the slide groove via a connecting bolt.

[0051] An urban virtual rail vehicle of the present invention comprises the side wall structure as described above; or comprises the vehicle body as described above.

[0052] The present invention provides a side wall structure, including an upper side beam and a door upper cross beam. The upper side beam is arranged along the length direction of the vehicle, and the lower part of the upper side beam constitutes a door area and a plurality of window areas; the door upper cross beam is fixedly connected to the top of the door area and connected to the upper side beam; wherein the door upper cross beam is fixedly connected to the upper side beam to form a U-shaped cavity structure, and the door upper cross beam includes a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam. The side wall structure can locally thicken the upper side beam at the top of the door area based on mechanical topological analysis by using the door upper cross beam, thereby improving the structural strength of the door area; the door upper cross beam is also arranged to form a U-shaped cavity structure, and a support frame is added to the cavity structure, thereby further improving the structural strength and reliability in the vehicle width direction (i.e., the thickness direction of the upper side beam), and the weight increase of the side wall structure is within a controllable range, so that the side wall structure achieves a balance between meeting the strength reliability and meeting the lightweight requirements.

[0053] The present invention also provides a car body, including the side wall structure, roof, several decorative panels and several skirt panels as described above. The door area of ​​the side wall structure is equipped with car doors, and all window areas of the side wall structure are equipped with windows; the roof is connected to the top of the side wall structure; each decorative panel covers and is connected to the upper side beam of the side wall structure, and the top of the car door and the top of all windows are provided with decorative panels; each skirt panel covers and is connected to the bottom of each window. By providing the above-mentioned side wall structure, the car body has all the advantages of the above-mentioned side wall structure, and the details are not repeated here. On this basis, the car body reliably assembles the side wall structure with the roof, decorative panels and skirt panels, so that the car body has substantial advantages such as beautiful appearance, simple structure and more reliable structural strength, and can meet the requirements of lightweight rail vehicles and the flatness requirements of the mounting surface of the external contour of the car body.

[0054] The present invention also provides an urban virtual rail vehicle, comprising the above-mentioned side wall structure; or comprising the above-mentioned vehicle body. The urban virtual rail vehicle is provided with at least the above-mentioned side wall structure, so that the vehicle body has all the advantages of the above-mentioned side wall structure, and the details are not repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 It is a schematic structural diagram of the side wall structure provided by the present invention.

[0057] Figure 2 It is a schematic rear view of the side wall structure provided by the present invention.

[0058] Figure 3 The present invention is a schematic structural diagram of the outer surface of the door upper crossbeam component.

[0059] Figure 4 The present invention is a schematic structural diagram of the inner surface of the door upper crossbeam composition.

[0060] Figure 5 yes Figure 2 A schematic structural diagram of the AA direction is shown in FIG.

[0061] Figure 6 yes Figure 5 Schematic structural diagram of point B shown in FIG.

[0062] Figure 7 yes Figure 1Schematic structural diagram at C shown in FIG.

[0063] Figure 8 yes Figure 1 Schematic structural diagram at D shown in FIG.

[0064] Fig. 9 yes Figure 2 Schematic structural diagram of E shown in FIG.

[0065] Fig.10 yes Figure 2 The schematic structural diagram of the FF direction is shown in FIG.

[0066] Fig.11 yes Figure 2 Schematic structure diagram of GG direction shown in FIG.

[0067] Fig.12 yes Fig.10 A schematic structural diagram of H is shown in FIG.

[0068] Fig.13 yes Figure 2 A schematic structural diagram in the MM direction is shown in FIG. 1 (the length direction is partially omitted).

[0069] Fig.14 It is a schematic structural diagram of the vehicle body provided by the present invention.

[0070] Fig.15 The figure is a schematic diagram of the connection structure of the end column, the end wall and the window provided by the present invention.

[0071] Fig.16 The present invention is a schematic diagram of the connection structure between the window column and the window body.

[0072] Fig.17 The present invention is a schematic diagram of the connection structure between the door column and the window.

[0073] Fig.18 The present invention provides a schematic diagram of the connection structure of the upper side beam, the roof, the decorative panel and the window.

[0074] Fig.19 The present invention is a schematic diagram of the connection structure between the crossbeam under the window and the window body.

[0075] Fig. 20 It is a schematic diagram of the connection structure between the cross beam under the window and the skirt board provided by the present invention.

[0076] Reference numerals: 1. Upper side beam; 11. Top connection end; 12. Bottom connection end; 2. Door column; 3. Window column; 31. Connection groove; 4. End column; 5. Window lower beam; 51. Process hole; 6. Door upper beam composition; 61. Main beam body; 62. First connection end; 63. Second connection end; 64. Fixing hole; 65. Rivet nut; 66. Stopper; 67. Support frame; 7. First reinforcement plate; 8. Second reinforcement plate; 9. Pad; 10. Slide; 100. Roof; 110. External shed board; 120. Internal connection beam; 130. Eaves; 200. Decorative board; 300. Sealant; 400. Window body; 500. Skirt board; 510. Folding part; 520. Skirt cover board; 530. Connection bolt; 600. End wall; DETAILED DESCRIPTION

[0077] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0078] The following references Figures 1 to 20 The side wall structure and vehicle body, and the urban virtual rail vehicle (referred to as “rail vehicle” in this embodiment of the present invention) described in detail are shown.

[0079] It should be noted that the vehicle body of the present invention includes a first side wall and a second side wall. The first side wall and the second side wall are arranged side by side on both sides of the vehicle width relative to the vehicle length direction. The embodiment of the present invention takes the first side wall as an example to explain the side wall structure in detail.

[0080] It should be noted that the "front", "rear" and "vehicle length direction" mentioned in the present invention refer to the length direction of the vehicle body of the rail vehicle. The "thickness direction" and "vehicle width direction" mentioned in the present invention refer to the width direction of the vehicle body of the rail vehicle. The "upper", "lower", "top", "bottom" and "vehicle height direction" mentioned in the present invention refer to the height direction of the vehicle body of the rail vehicle. The "left" and "right" mentioned in the present invention refer to the left and right directions shown in the corresponding drawings.

[0081] like Figure 1 and Figure 2As shown, the side wall structure described in the embodiment of the present invention includes an upper side beam 1 and a door upper cross beam assembly 6. The upper side beam 1 is arranged along the vehicle length direction. The lower part of the upper side beam 1 constitutes a door area and a plurality of window areas. The door upper cross beam assembly 6 is fixedly connected to the top of the door area and is connected to the upper side beam 1. Based on the mechanical topological analysis, the side wall structure can locally thicken the upper side beam 1 at the top of the door area by using the door upper cross beam assembly 6, thereby improving the structural strength of the door area. Among them, the door upper cross beam assembly 6 is fixedly connected to the upper side beam 1 to form a square cavity structure, and the door upper cross beam assembly 6 includes a plurality of support frames 67, each of which is installed in the square cavity structure and fixed to the inner surface of the upper side beam 1. The side wall structure further improves the structural strength and reliability in the vehicle width direction (i.e., the thickness direction of the upper side beam 1) by setting the door upper cross beam assembly 6 into a square cavity structure and adding a support frame 67 in the cavity structure. It can be seen that the side wall structure can ensure that its weight increase is within a controllable range, so that the side wall structure achieves a better balance between meeting strength reliability and meeting lightweight requirements.

[0082] In some embodiments, Figure 3 and Figure 4 As shown, the door upper cross beam assembly 6 includes a main beam body 61 and a plurality of the above-mentioned support frames 67. The main beam body 61 is fixedly connected to the inner surface of the upper side beam 1 to provide reliable support for the upper side beam 1. The top and bottom of the main beam body 61 are respectively fixedly connected to the inner surface of the upper side beam 1, so that the main beam body 61 and the upper side beam 1 are combined to form a U-shaped cavity structure with a closed cross section, such as Figure 5 and Figure 6 As shown. The U-shaped cavity structure can reinforce the thickness of the upper side beam 1 in the vehicle width direction to improve the structural strength, and because the cavity structure has a hollow inner cavity, the weight gain is within a controllable range and can meet the lightweight requirements of the vehicle body. Each support frame 67 is respectively connected to the main beam body 61 and the inner surface of the upper side beam 1, so that the support frame 67 is used to provide effective support in the thickness direction in the hollow inner cavity of the U-shaped cavity structure, ensuring the local position between the upper side beam 1 and the main beam body 61. Strengthen the support, further improve the structural strength, thereby ensuring the reliability of mechanical transmission above the door area and avoiding deformation of the door area. The support frame 67 can also ensure that the flatness of the door mechanism installation surface of the vehicle door meets the requirements, thereby improving the installation accuracy and reliability of the door mechanism.

[0083] In some embodiments, Figure 3 and Figure 4 As shown, the main beam body 61 includes a first connecting end 62 and a second connecting end 63 .

[0084] In some specific embodiments, the first connecting end 62 is arranged at the top of the main beam body 61, the first connecting end 62 is bent toward the upper side beam 1 and forms a B-beam structure, and the top connecting end 11 of the upper side beam 1 is bent toward the main beam body 61 and forms a B-beam structure. The end surface of the first connecting end 62 after bending is abutted against and fixed to the end surface of the top connecting end 11 of the upper side beam 1 after bending, thereby forming the top of the closed cross section of the above-mentioned square cavity structure. This structural setting can make the end surface of the first connecting end 62 located at the top of the upper side beam 1 and the end surface of the top connecting end 11 located at the top of the main beam body 61 form a surface-to-surface abutment welding fixation, increase the connection contact area, and improve the strength of the connection and support, and this structure can cooperate with the following connection structure of the upper side beam 1 and the roof 100, and will not interfere with the sliding cooperation between the upper side beam 1 and the roof 100 during the installation process (the installation structure of the upper side beam 1 and the roof 100 will be described in detail in the subsequent content, and will not be repeated here).

[0085] In some specific embodiments, the second connecting end 63 is arranged at the bottom of the main beam body 61. The second connecting end 63 is bent toward the upper side beam 1 and forms a C-beam structure. The end surface of the first connecting end 62 after being bent abuts against and is fixedly connected to the inner surface of the bottom connecting end 12 of the upper side beam 1, thereby forming the bottom of the closed cross section of the above-mentioned U-shaped cavity structure. The end surface of the second connecting end 63 after being bent is welded and fixed to the bottom surface of the upper side beam 1 in a face-to-face manner, thereby increasing the connection contact area and improving the strength of the connection and support.

[0086] In some embodiments, Figure 3 and Figure 4 As shown, the door upper crossbeam component 6 also includes a plurality of fixing holes 64, a plurality of stoppers 66 and a plurality of rivet nuts 65. Each fixing hole 64 runs through the surface of the main beam body 61. Each fixing hole 64 is an oblong hole. Preferably, the fixing hole 64 is a special-shaped oblong hole. Each rivet nut 65 is respectively fixed to the surface of the main beam body 61 facing the upper side beam 1. The fixing holes 64 and the rivet nuts 65 are arranged on the main beam body 61 according to the position of the adapter door mechanism connection interface, which can facilitate the integrated installation of the door mechanism installation interface of the vehicle door on the main beam body 61 and facilitate the adjustment of the installation position. Each stopper 66 is respectively fixed to the surface of the main beam body 61 facing the upper side beam 1, and each stopper 66 is fixed to the side of each fixing hole 64 one by one. The stopper 66 is inside the fixing hole 64, which can form a protection and stopper effect on the bolt to ensure that the bolt will not rotate after installation.

[0087] In some embodiments, Figure 3 and Figure 4As shown, the above-mentioned several support frames 67 at least include a first support frame 67 and a second support frame 67. The first support frame 67 and the second support frame 67 are arranged at intervals and fixedly connected to the surface of the main beam body 61 facing the upper side beam 1, and the first support frame 67 and the second support frame 67 are respectively arranged along the vehicle height direction. The first support frame 67 and the second support frame 67 are respectively bent to form a "Y" shape, and the bending directions of the first support frame 67 and the second support frame 67 are opposite. This structural setting ensures that both the first support frame 67 and the second support frame 67 can be reliably supported between the inner surface of the main beam body 61 and the inner surface of the upper side beam 1, and the combination of the first support frame 67 and the second support frame 67 can support the main beam body 61 from a two-way angle combination, thereby improving the flatness of the surface of the main beam body 61.

[0088] In some embodiments, a fixing hole 64 and a stopper 66 are provided between each first support frame 67 and the previous second support frame 67. A rivet nut 65 is provided between each first support frame 67 and the next second support frame 67. The specific arrangement of the fixing hole 64, the stopper 66 and the rivet nut 65 can be arranged according to the requirements of the door mechanism installation structure.

[0089] In some specific embodiments, Figure 4 As shown, the inner surface of the main beam body 61 described in the embodiment of the present invention is provided with two groups of support frames 67, and each group of support frames 67 is composed of a first support frame 67 and a second support frame 67. The first support frame 67 and the second support frame 67 in each group are arranged at a certain distance. Two fixing holes 64 are respectively provided through the surface of the main beam body 61 on the left and right sides of each group of support frames 67. The two fixing holes 64 are arranged in parallel up and down, and a certain distance is left between the two fixing holes 64. Two stoppers 66 are respectively provided at the positions corresponding to the two fixing holes 64, and each stopper 66 is located at the position of the corresponding fixing hole 64. The length of each stopper 66 is the same as the length of the fixing hole 64. When the bolts of the door mechanism mounting interface pass through the fixing hole 64, they can be inserted into the stopper 66 to achieve the stopping and anti-rotation effect on the bolts. Two rivet nuts 65 are provided between the first support frame 67 and the second support frame 67 of each group. The two rivet nuts 65 are fixed to the surface of the main beam body 61 according to the upper and lower positions, and a certain distance is left between the two rivet nuts 65.

[0090] It should be noted that, in order to further reduce weight, a plurality of weight-reducing holes are provided on the surface of the main beam body 61. The distribution of the weight-reducing holes is determined according to the mechanical topological analysis, so as to maximize the weight reduction while ensuring the strength of the main beam body 61. The weight-reducing holes are preferably at least one of a circular hole and an oblong hole.

[0091] In some embodiments, Figure 1 and Figure 2As shown, the side wall structure also includes a pair of door columns 2, a pair of end columns 4, a plurality of window columns 3 and a pair of window lower cross beams 5. A pair of door columns 2 are respectively arranged on both sides of the door area. A pair of end columns 4 are respectively arranged at both ends of the vehicle body, suitable for connecting the end wall 600 of the vehicle body. A plurality of window columns 3 are respectively arranged between the door columns 2 and the end columns 4. A pair of window lower cross beams 5 are arranged below the upper side beam 1 along the vehicle length direction, and each end column 4 is connected to the door column 2 on the corresponding side through the window lower cross beam 5. Among them, all door columns 2, window columns 3 and end columns 4 are arranged along the vehicle height direction. The tops of all door columns 2, window columns 3 and end columns 4 are connected to the upper side beam 1, and the bottoms of all window columns 3 are connected to the window lower cross beam 5 on the corresponding side. In the above-mentioned side wall structure, a pair of door columns 2 and an upper side beam 1 together form a door area; the upper side beam 1, a pair of end columns 4, a pair of window lower cross beams 5 and the door columns 2 together form two groups of window areas, and the two groups of window areas are respectively located on both sides of the door area; a plurality of window columns 3 further divide the two groups of window areas into a plurality of window areas.

[0092] The side wall structure (i.e., the side wall skeleton structure) described in the present embodiment is simple in structure. The door pillars 2, the window lower cross beams 5, and the window pillars 3 are preferably made of stainless steel square tube structures. Compared with the traditional ribbed beams, the structures are simple in structure and have higher rigidity, and can play a sufficient supporting and force transmitting role in the side wall structure. In addition, the upper side beam 1 is preferably a rolled part, and a position for installing the door upper cross beam assembly is reserved in the door area to realize the reinforcement of the door area. The top of the upper side beam 1 is suitable for connecting to the roof 100, and the bottom is suitable for connecting to the window 400, so as to realize the maximum utilization of parts, thereby achieving an effective balance between meeting the lightweight requirements and maximizing the reliability of the supporting strength.

[0093] It should be noted that, in the side wall structure described in the embodiment of the present invention, the allocation of the door area and the window area can be adopted as follows: Figure 1 In the symmetrical structure shown, the door area is located in the middle of the vehicle body, that is, the middle of the lower side beam, and a number of window areas are arranged on both sides of the door area; other structures can also be used, such as setting door areas at the ends of the vehicle body and the window areas are located between the door areas.

[0094] In some embodiments, in order to further improve the skeleton support and connection strength of the side wall structure, a reinforcement structure is installed at the connection between at least one of the door column 2, the window column 3 and the end column 4 and the window lower cross beam 5. The reinforcement structure can effectively prevent stress concentration at the connection of each beam body, and reliably control the deformation of the connection of each beam body, thereby extending the service life of the side wall structure.

[0095] The reinforcement structure should be provided with different connection methods according to the specific structure of the connection between each beam body in the side wall structure. In some specific embodiments, the reinforcement structure includes a reinforcing plate and a pad 9. The reinforcing plate covers and is connected to the outer surface of the connection of the beam body to improve the connection reliability of the connection. Preferably, the connecting plate and each beam body are connected by spot welding, which can reliably control the structural deformation of the connection. The pad 9 is paved and connected to the connection end face position of the beam body. Arc welding is used for the positions of the beam body connections of the side wall structure that cannot be spot welded. By adding the pad 9, the welding deformation can be effectively controlled.

[0096] In the embodiment of the present invention, the position where the door column 2 is connected to the end of the window lower beam 5 on the corresponding side is the first connection; the position where the end of the window column 3 is connected to the window lower beam 5 is the second connection. Based on the mechanical topological analysis, it can be obtained that all the first connections and second connections in the side wall structure need to be reinforced.

[0097] In some specific embodiments, the reinforcement structure at the first connection is as follows: Figure 7 As shown. The reinforcement structure includes a first reinforcing plate 7 and a pad 9. The first reinforcing plate 7 is a rectangular plate, and the first reinforcing plate 7 is fixed to the outer surface of the first connection. The first reinforcing plate 7 is fixed to the ends of the door column 2 and the lower window beam 5 by spot welding. The pad 9 connects the side surface of the door column 2 and the end surface of the lower window beam 5, that is, the pad 9 is padded between the end surface of the lower window beam 5 and the side surface of the door column 2. The pad 9 can reliably control the welding deformation between the lower window beam 5 and the door column 2, thereby improving the structural strength.

[0098] In some specific embodiments, the reinforcement structure at the second connection is as follows: Figure 8 and Fig. 9 The reinforcement structure includes a first reinforcement plate 7, a second reinforcement plate 8 and a pad 9. Fig. 9 As shown, the first reinforcing plate 7 is a rectangular plate, the first reinforcing plate 7 is fixed to the inner surface of the second connection, and the first reinforcing plate 7 is fixed to the end of the window lower cross beam 5 and the window column 3 by spot welding on the inner surface of the second connection. Preferably, the window lower cross beams 5 located on both sides of the first reinforcing plate 7 are respectively constructed with process weight reduction holes. The second reinforcing plate 8 is a T-shaped plate, the second reinforcing plate 8 is fixed to the outer surface of the second connection, and the second reinforcing plate 8 is fixed to the end of the window lower cross beam 5 and the window column 3 by spot welding on the outer surface of the second connection, and the connection area between the second reinforcing plate 8 and the window lower cross beam 5 is increased by using the structure of the T-shaped plate, further improving the connection strength of the second connection and eliminating stress. The pad 9 connects the end face of the window column 3 and the upper surface of the window lower cross beam 5, that is, the pad 9 is padded between the end face of the bottom of the window column 3 and the upper surface of the window lower cross beam 5, and the pad 9 can reliably control the welding deformation between the window lower cross beam 5 and the window column 3, thereby improving the structural strength.

[0099] In some specific embodiments, the reinforcement structure at the third connection is similar to the reinforcement structure at the first connection. The reinforcement structure at the third connection includes a first reinforcement plate 7 and a pad 9. The first reinforcement plate 7 is a rectangular plate, and the first reinforcement plate 7 is fixed to the outer surface of the first connection. The first reinforcement plate 7 is fixed to the end of the end column 4 and the end of the cross beam 5 under the window by spot welding. The pad 9 connects the side surface of the end column 4 and the end face of the cross beam 5 under the window, that is, the pad 9 is padded between the end face of the cross beam 5 under the window and the side surface of the end column 4. The pad 9 can reliably control the welding deformation between the cross beam 5 under the window and the end column 4, thereby improving the structural strength.

[0100] In some embodiments, Fig.10 , Fig.11 and Fig.12 As shown, the side wall structure also includes a plurality of slide grooves 10. The slide grooves 10 are suitable for installing the skirt board 500, and each slide groove 10 is arranged at intervals and fixed to the lower surface of the lower cross beam 5 of the window. The lower surface of the lower cross beam 5 of the window is fixed with a plurality of slide grooves 10 at intervals along the length direction. The channel formed by each slide groove 10 is connected front and back along the length direction of the vehicle, and each slide groove 10 is preferably in a C-shaped structure, with the open end of the slide groove 10 facing the bottom of the vehicle, and the closed end face of the slide groove 10 is welded to the lower surface of the lower cross beam 5 of the window. The structural setting of the slide groove 10 can facilitate the sliding installation of the equipment compartment skirt board 500, facilitate the rapid assembly of the vehicle body and the height positioning of the skirt board 500, reduce assembly deviation, and improve assembly efficiency.

[0101] In some specific embodiments, Fig.12 As shown, the cross beam 5 under the window is constructed with a connecting groove 31 opening downward, and the above-mentioned slide groove 10 is embedded in the connecting groove 31 to further improve the connection strength between the slide groove 10 and the cross beam under the window 5, and to increase the weight of the skirt board 500 or the equipment compartment suspended by the slide groove 10, thereby increasing the load capacity of the equipment under the vehicle.

[0102] Based on the above side wall structure, Fig.14As shown, an embodiment of the present invention further provides a vehicle body. The vehicle body includes the side wall structure, the roof 100, a plurality of decorative panels 200 and a plurality of skirt panels 500 as described above. The door area of ​​the side wall structure is equipped with a vehicle door, and all window areas of the side wall structure are equipped with a window 400; the roof 100 is connected to the top of the side wall structure; each decorative panel 200 covers and is connected to the upper side beam 1 of the side wall structure, and the top of the vehicle door and the top of all windows 400 are provided with a decorative panel 200; each skirt panel 500 covers and is connected to the bottom of each window 400. By providing the above-mentioned side wall structure, the vehicle body has all the advantages of the above-mentioned side wall structure, and the details will not be repeated here. On this basis, the car body reliably assembles the side wall structure with the roof 100, the decorative panel 200 and the skirt panel 500. Compared with the traditional car body, the side wall structure of the car body is not provided with a metal exterior wall panel. Instead, the decorative panel 200 and the glass window 400 are directly bonded to the outside of the skeleton beam of the side wall structure, thereby reducing the weight of the car body and meeting the reliable support and structural strength requirements of the side wall. The car body has substantial advantages such as beautiful appearance, simple structure and more reliable structural strength, and can meet the lightweight requirements of rail vehicles and the flatness requirements of the installation surface of the external contour of the car body.

[0103] It should be noted that in the vehicle body described in the embodiment of the present invention, the side wall structure at least includes the upper side beam 1 and the door upper cross beam assembly as described above; further, the side wall structure also includes the door pillar 2, window pillar 3, end pillar 4 and window lower cross beam 5 as described above. The specific connection structure of each beam body of the side wall structure is not repeated.

[0104] It should be noted that if Figure 5 and Fig.13 As shown, the door column 2 is a large-section square tube structure. The upper part of the door column 2 has a spot welding process hole 51 on the inner side surface, and is spot welded to the upper side beam 1; the middle part of the door column 2 has a spot welding process hole 51 on the side surface, and is pre-assembled with a first reinforcement plate 7 and a pad 9 by spot welding, and the first connection is reliably reinforced and the welding deformation is effectively controlled by the reinforcement structure. The side of the door column 2 connected to the door mechanism has a plurality of key holes to provide an installation interface for the door mechanism.

[0105] It should be noted that if Fig.10 and Fig.13 As shown, the window column 3 is a small-section square tube structure. The upper part of the window column 3 is provided with a spot welding process hole 51 on the inner side surface, and is spot-welded to the upper side beam 1; the lower part of the window column 3 is pre-assembled and installed with a first reinforcement plate 7, a second reinforcement plate 8 and a pad 9 by spot welding, and the second connection is reliably reinforced and the welding deformation is effectively controlled by the reinforcement structure.

[0106] It should be noted that if Fig.11 and Fig.13As shown, the end column 4 is a B-beam structure, and can form a sliding connection with the B-shaped profile of the end wall 600 during the installation stage. The specific connection structure is described in detail in the subsequent content and will not be repeated here. The upper part of the end column 4 is connected to the upper side beam 1 by spot welding, and the lower part of the end column 4 is pre-assembled and installed with the first reinforcement plate 7 and the pad 9 by spot welding. The third connection is reliably reinforced and the welding deformation is effectively controlled by the reinforcement structure.

[0107] It should be noted that if Fig.12 and Fig.13 As shown, one end of the window lower beam 5 is connected to the door column 2, and the other end of the window lower beam 5 is connected to the end column 4. The middle of the window lower beam 5 is connected to the window column 3. A plurality of slide grooves 10 are provided on the lower surface of the window lower beam 5 to provide an interface for the installation of the equipment cabin and the skirt board 500.

[0108] It should be noted that the upper side beam 1 is preferably a special-shaped structure. The top connection end 11 of the upper side beam 1 is a B-beam as described above, and can form a sliding connection with the B-beam profile of the roof 100 during the installation stage to facilitate assembly. The specific connection structure is described in detail in the subsequent content and will not be repeated here. The bottom connection end 12 of the upper side beam 1 is L-shaped to provide an interface for the installation of the window 400.

[0109] In some embodiments, Fig.15 , Fig.16 , Fig.17 and Fig.18 As shown, the top of the window 400 is bonded to the outer surface of the upper side beam 1. The front and rear sides of the window 400 in the vehicle length direction are respectively bonded to the outer surface of the door pillar 2 and the outer surface of the window pillar 3, or respectively bonded to the outer surface of the end pillar 4 and the outer surface of the window pillar 3. The bonding structure of the window 400 ensures that the surface of each window area of ​​the vehicle body is covered with the window 400 made of glass, and the bonding of the window 400 is preferably achieved by a sealant 300, thereby achieving a sealed connection between the window 400 and the side wall structure.

[0110] In some embodiments, Fig.19 As shown, the bottom of the window 400 is bonded to the outer surface of the window lower beam 5. Preferably, the bottom of the window 400 is bonded to the outer surface of the window lower beam 5 by at least two sets of sealants 300 arranged at intervals, so as to achieve a sealed connection between the bottom of the window 400 and the window lower beam 5.

[0111] It should be noted that the window 400 described in the embodiment of the present invention is made of glass. The decorative panels 200 are all composite panels with a lower material density. The vehicle body uses the decorative panels 200 and the window 400 to replace the metal exterior wall panels on the surface of the traditional vehicle body, thereby achieving reliable weight reduction.

[0112] In some embodiments, Fig.18As shown, the roof 100 includes an outer shed 110 and an inner connecting beam 120. The outer shed 110 is preferably provided with an arc transition profile at one side or two sides of the vehicle body to reduce wind resistance. The top and bottom of the inner connecting beam 120 are respectively fixed to the inner surface of the outer shed 110, which plays a role in reliably supporting and thickening the outer shed 110 and reinforcing the roof 100. The inner connecting beam 120 is preferably constructed with at least one step portion so that it can be reliably slidably assembled with the upper side beam 1 during the vehicle body assembly (installation) stage.

[0113] In some specific embodiments, Fig.18 As shown, the upper side beam 1 includes a first mounting portion, a second mounting portion and a third mounting portion which are integrally connected from top to bottom. The first mounting portion is a U-shaped beam structure, which can be assembled with the step portion of the U-shaped beam structure by sliding fit. The first mounting portion and the step portion are butted against each other at both ends, and a sliding gap is left in the middle, so that the relative height between the roof 100 and the upper side beam 1 can be flexibly adjusted during the vehicle body installation stage; the assembled first mounting portion and the step portion are fixed by welding. The second mounting portion is integrally connected to the bottom of the first mounting portion, and the outer surface of the second mounting portion is connected to a decorative panel 200, which is connected to the bottom of the outer shelf 110. The top and bottom of the decorative panel 200 outside the upper side beam 1 are respectively bonded to the top and bottom of the second mounting portion by a sealant 300, and the decorative panel 200 is arranged in parallel with the second mounting portion. The decorative panel 200 replaces the traditional metal exterior wall panel on the outside of the upper side beam 1 to protect, seal and decorate the upper side beam 1. The third mounting portion is an L-shaped beam structure, which is integrally connected to the bottom of the second mounting portion, and the top of the window 400 is bonded to the outer surface of the third mounting portion. The third mounting portion is bonded to the top of the window 400 by a sealant 300, so that the third mounting portion uses the L-shaped beam structure to provide a mounting interface for the window 400.

[0114] In some embodiments, the roof 100 also includes a rain eave 130. The rain eave 130 is integrally connected to the bottom of the outer shed board 110 and is connected to the top of the decorative panel 200. The rain eave 130 forms a hook-shaped structure toward the outside of the vehicle to guide rainwater. A decorative panel 200 is arranged between the rain eave 130 and the window 400, and the decorative panel 200 is applied to the outer surface of the upper side beam 1 by applying a sealant 300, which can ensure that the outer surface of the decorative panel 200 is in the same plane with the outer surface of the window 400 after installation, replacing the metal exterior wall panel of the traditional vehicle body, achieving the flatness of the outer contour of the side wall to meet the wind resistance requirements, meet the lightweight requirements, and improve the structural strength.

[0115] In some embodiments, Fig.15 As shown, the vehicle body further includes an end wall 600. The end wall 600 is configured with at least one connecting portion, and the connecting portion of the end wall 600 is preferably configured on both sides of the end wall 600 along the vehicle width direction. Fig.15What is shown is the connecting portion of the end wall 600 on one side. The end column 4 of the side wall structure is constructed with a fourth mounting portion. Both the connecting portion and the fourth mounting portion are U-beam structures. The fourth mounting portion can be assembled with the connecting portion of the end wall 600 by sliding fit. The fourth mounting portion and the connecting portion of the end wall 600 are butted against each other at both ends, and a sliding gap is left in the middle, so that the relative distance between the end wall 600 and the end column 4 can be flexibly adjusted during the vehicle body installation stage; the assembled fourth mounting portion and the connecting portion are fixed by welding. The outer surface of the fourth mounting portion is connected to the window body 400. Preferably, the side edge of the window body 400 is bonded to the outer surface of the fourth mounting portion by at least two groups of sealants 300 arranged at intervals, so as to achieve a sealed connection of the side edge of the window area.

[0116] It should be noted that in the vehicle body described in the embodiment of the present invention, the sliding connection between the side wall structure and the roof 100 can flexibly adjust the height difference between the roof 100 and the side wall structure during the vehicle body assembly stage. The decorative panel 200 provided on the outer surface of the upper side beam 1 can serve as a transition structure between the roof 100 and the window 400, thereby eliminating manufacturing errors and improving manufacturing accuracy by adjusting the glue seam width between the decorative panel 200 and the rain eaves 130 and the upper edge of the window 400.

[0117] In some embodiments, Fig. 20 As shown, the skirt board 500 includes a skirt cover plate 520 and a hinge portion 510. The hinge portion 510 is configured as a U-shaped hook structure. Specifically, one end of the hinge portion 510 is connected to the top of the skirt cover plate 520 through a rotating shaft to realize the rotation of the skirt board 500 around the rotating shaft, thereby realizing the lifting and closing of the skirt board 500. The lower surface of the window lower cross beam 5 of the side wall structure is connected with a slide groove 10, and an opening is provided at the bottom of the slide groove 10. The other end of the hinge portion 510 is provided with a horizontal extension section, and preferably the horizontal extension section can be placed flat below the opening of the slide groove 10. The horizontal extension section is connected to the opening of the slide groove 10 through a connecting bolt 530. During the vehicle body installation stage, the skirt board 500 can be quickly aligned with its slide groove 10 through the hinge portion 510, ensuring the efficient installation of the connecting bolt 530, and improving the installation accuracy and efficiency of the skirt board 500.

[0118] The present invention also provides an urban virtual rail vehicle, comprising the above-mentioned side wall structure; or comprising the above-mentioned vehicle body. The urban virtual rail vehicle is provided with at least the above-mentioned side wall structure, so that the vehicle body has all the advantages of the above-mentioned side wall structure, and the details are not repeated here.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A side wall structure, It is characterized in that include: An upper side beam is arranged along the vehicle length direction, and the lower part of the upper side beam forms a door area and a plurality of window areas; The door upper cross beam is fixed to the top of the door area and connected to the upper side beam; Among them, the upper door cross beam is fixedly connected to the upper side beam to form a U-shaped cavity structure. The upper door cross beam includes a plurality of support frames, each of which is installed in the U-shaped cavity structure and fixedly connected to the inner surface of the upper side beam.

2. The side wall structure according to claim 1, It is characterized in that The cross beam on the door comprises: A main beam body is fixedly connected to the inner surface of the upper side beam, and the top and bottom of the main beam body are respectively fixedly connected to the inner surface of the upper side beam, so that the main beam body and the upper side beam are combined to form the U-shaped cavity structure with a closed cross section; A plurality of support frames are respectively connected to the main beam body and the inner surface of the upper side beam.

3. The side wall structure according to claim 2, It is characterized in that The main beam body comprises: A first connecting end is arranged at the top of the main beam body, the first connecting end is bent toward the upper side beam to form a B-beam structure, and the top connecting end of the upper side beam is bent toward the main beam body to form a B-beam structure, and the bent end surface of the first connecting end abuts against and is fixedly connected to the bent end surface of the top connecting end of the upper side beam; The second connecting end is arranged at the bottom of the main beam body, the second connecting end is bent toward the upper side beam to form a C-beam structure, and the end surface of the bent first connecting end abuts against and is fixedly connected to the inner surface of the bottom connecting end of the upper side beam.

4. The side wall structure according to claim 2, It is characterized in that The cross beam on the door also includes: A plurality of fixing holes are constructed on the surface of the main beam body; A plurality of stoppers are respectively fixed to the surface of the main beam body facing the upper side beam, and each of the stoppers is fixed to the side of each of the fixing holes in a one-to-one correspondence; A plurality of riveted nuts are respectively fixed on the surface of the main beam body facing the upper side beam.

5. The side wall structure according to claim 4, It is characterized in that The plurality of support frames include a first support frame and a second support frame, the first support frame and the second support frame are arranged at intervals and fixedly connected to the surface of the main beam body facing the upper side beam, and the first support frame and the second support frame are respectively arranged along the vehicle height direction; Wherein, the first support frame and the second support frame are bent to form a letter "Y" shape respectively, and the bending directions of the first support frame and the second support frame are opposite; Wherein, the fixing hole and the stopper are provided between each of the first supporting frames and the previous second supporting frame; Wherein, the rivet nut is arranged between each of the first supporting frames and the next second supporting frame.

6. The side wall structure according to any one of claims 1 to 5, It is characterized in that The side wall structure also includes: a pair of door posts, respectively arranged on both sides of the door area; A pair of end columns are respectively arranged at both ends of the vehicle body; A plurality of window columns, respectively arranged between the door columns and the end columns; A pair of window lower cross beams are arranged below the upper side beams along the vehicle length direction, and each of the end pillars is connected to the door pillars on the corresponding side through the window lower cross beams; Wherein, all the door pillars, window pillars and end pillars are arranged along the vehicle height direction; The tops of all the door posts, window posts and end posts are connected to the upper side beams, and the bottoms of all the window posts are connected to the lower window beams on the corresponding sides; Wherein, a reinforcement structure is installed at the connection between at least one of the door column, the window column and the end column and the cross beam under the window.

7. The side wall structure according to claim 6, It is characterized in that The position where the door pillar is connected to the end of the window lower crossbeam on the corresponding side is the first connection point; The reinforcement structure includes a first reinforcement plate and a backing plate; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixedly connected to the outer surface of the first connection; The pad connects the side surface of the door column and the end surface of the window lower beam.

8. The side wall structure according to claim 6, It is characterized in that The position where the end of the window column is connected to the lower crossbeam of the window is a second connection point, and the reinforcement structure includes a first reinforcement plate, a second reinforcement plate and a pad; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixedly connected to the inner surface of the second connection; The second reinforcing plate is a T-shaped plate, and the second reinforcing plate is fixedly connected to the outer surface of the second connection; The backing plate connects the end surface of the window column and the upper surface of the window lower crossbeam.

9. The side wall structure according to claim 6, It is characterized in that The position where the end column is connected to the end of the window lower crossbeam on the corresponding side is the third connection point; The reinforcement structure includes a first reinforcement plate and a backing plate; The first reinforcing plate is a rectangular plate, and the first reinforcing plate is fixedly connected to the outer surface of the third connection; The pad connects the side surface of the end column and the end surface of the cross beam under the window.

10. The side wall structure according to claim 6, It is characterized in that The side wall structure also includes a plurality of slide grooves, which are suitable for installing skirt boards, and each of the slide grooves is arranged at intervals and fixed to the lower surface of the cross beam under the window.

11. A vehicle body, It is characterized in that include: The side wall structure according to any one of claims 1 to 10, wherein the door area of ​​the side wall structure is equipped with a vehicle door, and all window areas of the side wall structure are equipped with windows; A roof connected to the top of the side wall structure; A plurality of decorative panels, respectively covering and connected to the upper side beams of the side wall structure, the top of the door and the top of all the windows are provided with the decorative panels; A plurality of skirt panels respectively cover and are connected to the bottom of each of the windows.

12. The vehicle body according to claim 11, It is characterized in that The top of the window is bonded to the outer surface of the upper side beam, and the bottom of the window is bonded to the outer surface of the lower cross beam of the window; The two side edges of the window body are respectively bonded to the outer surface of the door column and the outer surface of the window column, or respectively bonded to the outer surface of the end column and the outer surface of the window column.

13. The vehicle body according to claim 12, It is characterized in that The roof comprises an outer shed plate and an inner connecting beam, the top and bottom of the inner connecting beam are respectively fixed to the inner surface of the outer shed plate, and the inner connecting beam is configured with at least one step portion; the upper side beam comprises: The first mounting portion is a U-beam structure, and can be assembled with the step portion by sliding fit, and the assembled first mounting portion is fixed to the step portion by welding; A second mounting portion is integrally connected to the bottom of the first mounting portion, the outer surface of the second mounting portion is connected to the decorative plate, and the decorative plate is connected to the bottom of the outer shelf plate; The third mounting portion is an L-shaped beam structure. The third mounting portion is integrally connected to the bottom of the second mounting portion, and the top of the window body is bonded to the outer surface of the third mounting portion.

14. The vehicle body according to claim 12, It is characterized in that The vehicle body also includes an end wall, which is configured with at least one connecting portion, and the end column is configured with a fourth mounting portion, and both the connecting portion and the fourth mounting portion are U-beam structures, and the fourth mounting portion can be assembled with the connecting portion of the end wall by sliding fit, and the assembled fourth mounting portion is fixed to the connecting portion by welding; the outer surface of the fourth mounting portion is connected to the window body.

15. The vehicle body according to claim 11, It is characterized in that The skirt board includes a skirt cover board and a hinge portion, the hinge portion is configured to be a U-shaped hook, one end of the hinge portion is connected to the top end of the skirt cover board via a rotating shaft, the other end of the hinge portion is provided with a horizontal extension section, the lower surface of the window lower beam of the side wall structure is connected with a slide groove, the bottom of the slide groove is provided with an opening, and the horizontal extension section is connected to the opening of the slide groove via a connecting bolt.

16. A rail vehicle, It is characterized in that It comprises the side wall structure as described in any one of claims 1-10; or it comprises the vehicle body as described in any one of claims 11-15.

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