Freight vehicle body and freight vehicle

Abstract

The embodiment of the invention provides a freight vehicle body and a freight vehicle, and the freight vehicle body comprises a side wall which comprises a plurality of side wall longitudinal beams and side wall vertical beams which are connected to form a side wall framework, and the middle part of the side wall is provided with a side door installation area; the roof comprises a roof longitudinal beam, a first roof camber beam, a second roof camber beam, a door mechanism mounting beam and a roof edge beam; the chassis comprises a chassis upper cross beam, a chassis lower cross beam, a chassis upper edge beam, a chassis lower edge beam and chassis stand columns, and a chassis upper framework and a chassis lower framework are correspondingly formed and connected through the chassis stand columns; the side wall vertical beams, the second roof camber beams and the underframe upper cross beams are correspondingly connected to form an upper closed-loop structure; the underframe upper cross beam, the underframe lower cross beam and the underframe stand columns are correspondingly connected to form a lower closed-loop structure, and at least the upper closed-loop structure and the lower closed-loop structure on the two sides of the side door installation area are correspondingly connected to form a double-closed-loop structure. According to the freight vehicle body and the freight vehicle, the side door with the large width can be arranged, and goods can be loaded and unloaded rapidly.

Description

Technical Field

[0001] The present application relates to rail vehicle technology, and in particular to a freight vehicle body and a freight vehicle. Background Art

[0002] In recent years, the domestic market has gradually diversified its demands for railway vehicle transportation functions, and has put forward higher requirements for lightweight vehicle bodies. At present, railway vehicles that can meet product loading and unloading include end loading, side loading, top loading and other forms, with operating speeds of 80km / h, 100km / h, 120km / h and 160km / h, and axle weights of 16.5t, 17t, 21t and 23t.

[0003] Compared with the above-mentioned cargo loading methods, end loading requires an end platform, which is only available in railway freight yards. Flat cars can also be used as end loading platforms, but this requires additional vehicles in the train marshaling, which is not very economical. Top loading requires a large crane or gantry crane to be set up in a large and flat site, which has high requirements for loading auxiliary equipment and site, and is not flexible. Side loading can rely on the current common side platforms of passenger cars and trucks, and can be completed using forklifts and dump devices. Wheeled vehicles can drive in and out directly. The loading method is highly versatile and economical.

[0004] At present, the side loading form usually sets a side door in the middle of the carriage, and the side door opening is usually no more than 2.5m, and its load-bearing capacity is limited, and rapid loading cannot be achieved. If the side door opening is increased, the strength of the side wall of the carriage will be reduced. Summary of the invention

[0005] In order to solve one of the above-mentioned technical defects, a freight body and a freight vehicle are provided in an embodiment of the present application.

[0006] According to a first aspect of an embodiment of the present application, a freight vehicle body is provided, comprising:

[0007] Side wall; the side wall includes a side wall longitudinal beam and a side wall vertical beam; a plurality of side wall longitudinal beams are connected with the side wall vertical beams to form a side wall frame; a side door installation area is provided in the middle of the side wall; the width of the side door installation area is greater than 3m; the side wall longitudinal beam extends from the side of the side door installation area toward the end of the side wall;

[0008] Roof; the roof includes a roof longitudinal beam, a first roof curved beam, a second roof curved beam, a roof side beam and a door mechanism mounting beam; a plurality of first roof curved beams are arranged at intervals, corresponding to the position of the side door mounting area; a plurality of second roof curved beams are arranged at intervals, and are located between the first roof curved beam and the longitudinal end of the roof; the length of the first roof curved beam is shorter than that of the second roof curved beam; the roof longitudinal beam is a full-length beam, and a plurality of roof longitudinal beams are connected to each of the first roof curved beams and the second roof curved beam to form a roof frame; the roof side beams extend in the longitudinal direction, connecting the ends of each of the second roof curved beams; the door mechanism mounting beam extends in the longitudinal direction, connecting the ends of each of the first roof curved beams;

[0009] The chassis; the chassis comprises an upper chassis cross beam, a lower chassis cross beam, an upper chassis side beam, a lower chassis side beam and a chassis column; a plurality of upper chassis cross beams are connected to the upper chassis side beams to form an upper chassis frame; a plurality of lower chassis cross beams are connected to the lower chassis side beams to form a lower chassis frame, and the chassis column is connected between the upper chassis cross beam and the end of the lower chassis cross beam; the coverage area of ​​the lower chassis frame is smaller than that of the upper chassis frame; the lower chassis frame is located below the side door installation area;

[0010] The side wall vertical beams, the second roof curved beam, and the upper cross beam of the chassis are connected correspondingly to form an upper closed-loop structure; the upper cross beam of the chassis, the lower cross beam of the chassis, and the chassis columns are connected correspondingly to form a lower closed-loop structure; at least the side wall vertical beams, the second roof curved beam, the upper cross beam of the chassis, the lower cross beam of the chassis, and the chassis columns on both sides of the side door installation area are connected to form a double closed-loop structure.

[0011] According to a second aspect of an embodiment of the present application, there is provided a freight vehicle, comprising: the freight vehicle body as described above.

[0012] The technical solution provided by the embodiment of the present application is that the side wall includes a side wall longitudinal beam and a side wall vertical beam; a plurality of side wall longitudinal beams are connected to the side wall vertical beams to form a side wall frame, a side door installation area is provided in the middle of the side wall, and the width of the side door installation area is greater than 3m; the side wall longitudinal beam extends from the side of the side door installation area toward the end of the side wall; the roof includes a roof longitudinal beam, a first roof curved beam, a second roof curved beam and a roof side beam, and a door mechanism installation beam; a plurality of first roof curved beams are arranged at intervals, corresponding to the side door installation area Position; multiple second roof curved beams are arranged at intervals and are located between the first roof curved beam and the longitudinal end of the roof; the length of the first roof curved beam is smaller than that of the second roof curved beam; the roof longitudinal beam is a full-length beam, and multiple roof longitudinal beams are connected to each first roof curved beam and the second roof curved beam to form a roof frame; the roof side beams extend longitudinally and connect the ends of each second roof curved beam; the door mechanism mounting beams extend longitudinally and connect the ends of each first roof curved beam; the chassis includes an upper cross beam of the chassis, a lower cross beam of the chassis, and an upper side beam of the chassis , chassis lower side beams and chassis columns; multiple chassis upper cross beams are connected to the chassis upper side beams to form a chassis upper frame; multiple chassis lower cross beams are connected to the chassis lower side beams to form a chassis lower frame, and the chassis columns are connected between the chassis upper cross beams and the ends of the chassis lower cross beams; the coverage area of ​​the chassis lower frame is smaller than that of the chassis upper frame; the chassis lower frame is located below the side door installation area, which can improve the strength of the side door installation area; the side wall vertical beams, the second roof curved beams, and the chassis upper cross beams are correspondingly connected to form an upper closed loop structure; the bottom The upper crossbeam of the frame, the lower crossbeam of the frame, and the upright posts of the frame are connected correspondingly to form a lower closed-loop structure; at least the side wall vertical beams on both sides of the side door installation area, the second roof curved beam, the upper crossbeam of the frame, the lower crossbeam of the frame, and the upright posts of the frame are connected to form a double closed-loop structure, and several closed-loop structures are connected in series through longitudinal beams to form a cage-type structure, which can improve the overall rigidity of the vehicle body, especially the vertical rigidity, so that a side door with a larger opening can be opened on the side wall, thereby improving the cargo loading and unloading speed, and can meet the loading and unloading needs of large cargo. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 A schematic diagram of the structure of a freight vehicle body provided in an embodiment of the present application;

[0015] Figure 2 A side view of a freight vehicle body provided in an embodiment of the present application;

[0016] Figure 3 A schematic diagram of the structure of a first side wall in a freight vehicle body provided in an embodiment of the present application;

[0017] Figure 4A schematic diagram of the structure of the second side wall in the freight vehicle body provided in an embodiment of the present application;

[0018] Figure 5 A schematic diagram of a roof of a freight vehicle body from a top view provided in an embodiment of the present application;

[0019] Figure 6 A schematic diagram of the roof of a freight vehicle body as viewed from above provided in an embodiment of the present application;

[0020] Figure 7 A cross-sectional view of a roof in a freight vehicle body provided for an embodiment of the present application;

[0021] Figure 8 A bottom view of the underframe of a freight vehicle body provided in an embodiment of the present application;

[0022] Fig. 9 Another bottom view of the underframe of the freight vehicle body provided in the embodiment of the present application;

[0023] Fig.10 A schematic diagram of the structure of the middle end wall of a freight car body provided in an embodiment of the present application;

[0024] Fig.11 A three-dimensional diagram of a closed-loop structure formed by a freight vehicle body frame provided in an embodiment of the present application;

[0025] Fig.12 A cross-sectional view of a closed loop formed by a freight vehicle body frame provided in an embodiment of the present application;

[0026] Fig.13 A cross-sectional view of a freight vehicle body provided for an embodiment of the present application;

[0027] Fig.14 A schematic diagram of the structure of a equipment door in a closed state in a freight vehicle body provided in an embodiment of the present application;

[0028] Fig.15 A side view of a equipment door in a closed state in a freight vehicle body provided in an embodiment of the present application;

[0029] Fig.16 A schematic diagram of a structure in which the equipment compartment door of a freight vehicle provided in an embodiment of the present application is open and the battery is located in the equipment compartment;

[0030] Fig.17 A partial enlarged view of a freight vehicle body provided in an embodiment of the present application, in which the equipment compartment door is open and the battery is located in the equipment compartment;

[0031] Fig.18 A side view of a freight vehicle body provided in an embodiment of the present application, in which the equipment compartment door is open and the battery is located in the equipment compartment;

[0032] Fig.19 A schematic diagram of a structure in which the equipment compartment door of a freight vehicle provided in an embodiment of the present application is in an open state and the battery extends out of the equipment compartment;

[0033] Fig. 20 A side view of a freight vehicle body provided in an embodiment of the present application, in which the equipment compartment door is open and the battery extends out of the equipment compartment.

[0034] Reference numerals:

[0035] 1-side wall; 11-first side wall; 12-second side wall; 13-side wall longitudinal beam; 14-side wall vertical beam; 15-side door installation area; 16-door column;

[0036] 2-roof; 21-roof longitudinal beam; 22-first roof curved beam; 23-second roof curved beam; 25-roof side beam; 26-door mechanism mounting beam; 27-roof skin;

[0037] 3- chassis; 31- chassis upper frame; 32- chassis lower frame; 33- chassis upper cross beam; 34- chassis lower cross beam; 35- chassis upper side beam; 36- chassis lower side beam; 37- chassis column; 38- skin; 391- traction beam; 392- buffer beam; 393- pillow beam; 310- chassis middle beam; 311- lower slideway;

[0038] 4- End wall;

[0039] 5-body skirt;

[0040] 61-equipment door; 62-guide rail; 621-fixed guide rail; 622-movable guide rail; 623-door guide rail; 63-battery; 64-equipment bracket; 65-guide wheel; 66-first connecting rod; 67-second connecting rod. DETAILED DESCRIPTION

[0041] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0042] This embodiment provides a freight vehicle body, which is used in freight vehicles, especially rail vehicles.

[0043] In this embodiment, the length direction of the vehicle body is called the longitudinal direction, the width direction of the vehicle body is called the transverse direction, and the height direction of the vehicle body is called the vertical direction. The longitudinal direction is also the extension direction of the track.

[0044] like Figures 1 to 10As shown, the freight vehicle body provided in this embodiment includes: side walls 1, a roof 2, a bottom frame 3 and end walls 4. The side wall 1 includes a first side wall 11 and a second side wall 12, and the first side wall 11 and the second side wall 12 are arranged opposite to each other and are respectively located on both sides of the vehicle body. The roof 2 is connected between the tops of the first side wall 11 and the second side wall 12, and the bottom frame 3 is connected between the bottoms of the first side wall 11 and the second side wall 12. The end walls 4 are respectively arranged at the longitudinal ends of the vehicle body. The first side wall 11, the second side wall 12, the roof 2, the bottom frame 3 and the two end walls 4 enclose a compartment space for containing goods.

[0045] The first side wall 11 and the second side wall 12 are both provided with a side door installation area for installing a side door. The side door can be opened to transport goods into the vehicle compartment or to take goods out of the vehicle compartment. The side door installation area can be set in the middle of the side wall or slightly closer to one end of the vehicle body. The side door installation area in this embodiment is not set in the middle of the side wall, resulting in different longitudinal lengths of the side walls on both sides of the side door installation area, such as Figure 3 and Figure 4 shown.

[0046] like Figure 3 and Figure 4 As shown, the first side wall 11 and the second side wall 12 have the same structure, both including a side wall longitudinal beam 13 and a side wall vertical beam 14. The side wall vertical beam 14 extends vertically, and the side wall longitudinal beam 13 extends longitudinally, extending from the side of the side door installation area 15 toward the end of the side wall. There are multiple side wall longitudinal beams 13, and there are multiple side wall vertical beams 14. Multiple side wall longitudinal beams 13 are connected with the side wall vertical beams 14 to form a side wall frame. A side door installation area 15 is provided in the middle of the side wall. The width of the side door installation area 15 is greater than 3m, for example, it can be 4m, 5m, 6m, 7m, 8m, 9m, 10m, etc. Depending on the length of the carriage, the width of the side door installation area 15 can account for a maximum of one third of the length of the carriage. In this embodiment, the width of the side door installation area 15 is 5m-10m, and the height of the side door installation area is 2.5m-3m. In addition, an inner skin is provided on the inner side of the side wall frame, and an outer skin is provided on the outer side. The side wall longitudinal beams 13 and the side wall vertical beams 14 can be connected together by welding or other methods.

[0047] like Figures 5 to 7 As shown, the roof 2 includes a roof longitudinal beam 21, a first roof bow beam 22 and a second roof bow beam 23. The roof longitudinal beam 21 is a full-length beam extending in the longitudinal direction, and a plurality of roof longitudinal beams 21 are arranged side by side.

[0048] The first roof bow beam 22 and the second roof bow beam 23 are both curved beams extending in the vehicle width direction. A plurality of first roof bow beams 22 are arranged at intervals, corresponding to the position of the side door installation area 15. A plurality of second roof bow beams 23 are arranged at intervals, arranged between the first roof bow beam 22 and the longitudinal end of the roof. The length of the first roof bow beam 22 is smaller than that of the second roof bow beam 23, so as to increase the height of the side door installation area 15.

[0049] A plurality of roof longitudinal beams 21 are connected to the first roof bow beams 22 and the second roof bow beams 23 to form a roof frame. A roof side beam 25 extends longitudinally and connects the ends of the second roof bow beams 23. A door mechanism mounting beam 26 extends longitudinally and connects the ends of the first roof bow beams 22. The door mechanism mounting beam 26 is used to mount a side door drive mechanism.

[0050] like Figure 5 As shown, above the side door mounting area 15 is a first roof bow 22. A roof skin 27 is provided on the outside of the roof frame. Figure 5 The roof skin 27 is shown, but the roof rails 21 are not visible. Figure 6 The roof longitudinal beam 21 can be seen in the figure. The roof longitudinal beam 21, the first roof bow beam 22 and the second roof bow beam 23 can be connected together by welding or the like.

[0051] like Figure 8 and Fig. 9 As shown, the chassis 3 includes a chassis upper crossbeam 33, a chassis lower crossbeam 34, a chassis upper side beam 35, a chassis lower side beam 36 and a chassis column 37. The chassis upper crossbeam 33 extends in the transverse direction, and a plurality of chassis upper crossbeams 33 are arranged in sequence in the longitudinal direction. The chassis lower crossbeam 34 extends in the transverse direction, and a plurality of chassis upper crossbeams 33 are arranged in sequence in the longitudinal direction. The chassis lower crossbeam 34 is located below the chassis upper crossbeam 33, and can be located directly below the chassis upper crossbeam 33.

[0052] The underframe upper side beam 35 extends longitudinally and is connected to the end of each underframe upper cross beam 33. The underframe upper side beam 35 is arranged on both the left and right sides of the underframe. The underframe lower side beam 36 extends longitudinally and is connected to the end of each underframe lower cross beam 34. The underframe lower side beam 36 is arranged on both the left and right sides of the underframe.

[0053] A plurality of chassis upper cross beams 33 are connected to two chassis upper side beams 35 to form a chassis upper frame 31, and a plurality of chassis lower cross beams 34 are connected to chassis lower side beams 36 to form a chassis lower frame 32. The chassis columns 37 are connected between the ends of the chassis upper cross beams 33 and the chassis lower cross beams 34, connecting the chassis upper frame 31 and the chassis lower frame 32 to form a three-dimensional frame. The coverage area of ​​the chassis lower frame 32 is smaller than that of the chassis upper frame 31, and the chassis lower frame 32 is located below the side door installation area 15. The chassis upper frame 31 and the chassis lower frame 32 form a fish belly structure, which is equivalent to having an extra part of the chassis structure below the chassis below the side door installation area 15, which can improve the chassis strength in the side door area.

[0054] The side wall vertical beam 14, the second roof curved beam 23, and the upper cross beam 33 of the chassis are connected to form an upper closed-loop structure, and the upper cross beam 33 of the chassis, the lower cross beam 34 of the chassis, and the upright posts 37 of the chassis are connected to form a lower closed-loop structure. At least the side wall vertical beam 14, the second roof curved beam 23, the upper cross beam 33 of the chassis, the lower cross beam 34 of the chassis, and the upright posts 37 of the chassis are connected to form a double closed-loop structure on both sides of the side door installation area, that is, at least the upper closed-loop structure and the lower closed-loop structure on both sides of the side door installation area are connected to form a double closed-loop structure. Most of the structures of the upper closed-loop structure and the lower closed-loop structure are shared and have high strength. In addition, the upper closed-loop structure and the lower closed-loop structure are longitudinally connected together through the roof 2, the side wall 1, and the upper side beam 35 of the chassis to form a cage structure, which is conducive to improving the torsional rigidity of the vehicle body.

[0055] Specifically, the upper closed-loop structure and the lower closed-loop structure may be connected to form a double closed-loop structure only on both sides of the side door, or the upper closed-loop structure of the entire vehicle body may be connected to the lower closed-loop structure to form a double closed-loop structure.

[0056] The upper closed-loop structures and the lower closed-loop structures are connected to form a cage-type vehicle body through the roof longitudinal beam 21, the chassis longitudinal beam, the chassis side beam and the side wall longitudinal beam. The chassis upper side beam 35, the chassis lower side beam 36, the chassis column 37, the chassis upper cross beam 33 and the chassis lower cross beam 34 can be connected to form a skeleton structure by welding or other methods.

[0057] Furthermore, the upper chassis frame 31 and the lower chassis frame 32 are provided with skins 38 respectively. The skin 38 at the bottom of the lower chassis frame 32 is used to cover the bottom of the vehicle body, and a bottom plate and other structures can be provided above the skin on the upper surface of the upper chassis frame 31.

[0058] The bottom of the chassis of traditional trucks is equipped with a middle beam. Although it can improve the vertical load-bearing capacity, its torsional rigidity is still weak and needs to be matched with a main crossbeam with a larger cross section. However, the installation of a main crossbeam will occupy the space under the vehicle, making it difficult to arrange the equipment under the vehicle. In this application, the cage-type frame solution with the upper and lower structures mentioned above is adopted, and there is no need to use a main crossbeam with a large cross section. The space under the vehicle is freed up to arrange the equipment, and the weight of the vehicle body can also be reduced.

[0059] In addition, Fig.10 As shown, the end wall 4 includes an end wall cross beam and an end wall vertical beam, and a plurality of end wall cross beams and end walls are connected, and resistance spot welding or plug welding can be used, which is beneficial to improve the welding flatness.

[0060] like Figure 11 to Figure 12 As shown, the side wall vertical beam 14, the second roof curved beam 23, and the bottom frame upper cross beam 33 are connected to form an upper closed loop structure. The side wall vertical beam 14, the second roof curved beam 23, the bottom frame cross beam 34, and the bottom frame column 37 are connected to form a lower closed loop structure. The upper closed loop structure and the lower closed loop structure formed above can improve the overall strength of the vehicle body, so that a side door with a larger opening can be opened on the side wall.

[0061] The technical solution provided in this embodiment is that the side wall includes a side wall longitudinal beam and a side wall vertical beam; a plurality of side wall longitudinal beams are connected to the side wall vertical beams to form a side wall frame; a side door installation area is provided in the middle of the side wall, and the width of the side door installation area is greater than 3m; the side wall longitudinal beam extends from the side of the side door installation area toward the end of the side wall; the roof includes a roof longitudinal beam, a first roof curved beam, a second roof curved beam, a roof side beam, and a door mechanism installation beam; a plurality of first roof curved beams are arranged at intervals, corresponding to the position of the side door installation area The first roof beam is arranged at intervals and is located between the first roof beam and the longitudinal end of the roof; the length of the first roof beam is smaller than that of the second roof beam; the longitudinal roof beam is a full-length beam, and the plurality of longitudinal roof beams are connected to the first roof beams and the second roof beams to form a roof frame; the roof side beams extend longitudinally and connect the ends of the second roof beams; the door mechanism mounting beams extend longitudinally and connect the ends of the first roof beams; the chassis includes an upper cross beam, a lower cross beam, an upper side beam, The underframe lower side beam and underframe upright column; multiple underframe upper cross beams are connected with the underframe upper side beams to form an underframe upper frame; multiple underframe lower cross beams are connected with the underframe lower side beams to form an underframe lower frame, and the underframe upright column is connected between the underframe upper cross beam and the end of the underframe lower cross beam; the coverage area of ​​the underframe lower frame is smaller than that of the underframe upper frame; the underframe lower frame is located below the side door installation area, which can improve the strength of the side door installation area; the side wall vertical beams, the second roof curved beams, and the underframe upper cross beams are correspondingly connected to form an upper closed loop structure; the bottom The upper crossbeam of the frame, the lower crossbeam of the frame, and the upright posts of the frame are connected correspondingly to form a lower closed-loop structure; at least the side wall vertical beams on both sides of the side door installation area, the second roof curved beam, the upper crossbeam of the frame, the lower crossbeam of the frame, and the upright posts of the frame are connected to form a double closed-loop structure, and several closed-loop structures are connected in series through longitudinal beams to form a cage-type structure, which can improve the overall rigidity of the vehicle body, especially the vertical rigidity, so that a side door with a larger opening can be opened on the side wall, thereby improving the cargo loading and unloading speed, and can meet the loading and unloading needs of large cargo.

[0062] The inner and outer sides of the side wall frame are respectively provided with skins, which not only play a decorative role, but also help to improve the torsional rigidity of the cage-type frame.

[0063] When the width of the side door installation area 15 is about 10m, the width of the roof part is only about 2m. In this embodiment, the roof crossbeam 23 at the top of the side door installation area 15 is made of cold-bent steel, which can not only meet the installation requirements of the side door, but also improve the strength and rigidity of the vehicle body.

[0064] The roof longitudinal beam 21 adopts a large-section full-length beam, which can not only bear the installation of the side door, but also improve the overall rigidity of the roof.

[0065] Further, such as Fig.13 As shown, door pillars 16 are arranged on both sides of the side door installation area 15, the bottom ends of the door pillars 16 are connected to the bottom frame 3, and the tops are connected to the second roof curved beam 23. The door pillars 16 can be made of large-section profiles, such as large-section cold-bent steel, which can improve the vertical rigidity and torsional rigidity of the vehicle body, thereby improving the strength of the side door installation, and can improve the stability of the opening and closing process, which is also conducive to improving the driving safety of the vehicle.

[0066] like Fig.13 As shown, the roof is provided with a door mechanism mounting beam 26 for mounting the upper part of the door mechanism. A lower slide 311 is provided at the outer end of the upper cross beam 33 of the chassis at the side door mounting area 15. The lower slide 311 extends longitudinally and straddles a plurality of upper cross beams 33 of the chassis. The side door can be embedded in the lower slide 311 and slide in the lower slide 311 to realize the opening and closing of the side door.

[0067] In addition, the underframe and bogie interfaces at the corresponding positions of the bogies match each other to ensure that the bogies and underframes will not collide when the vehicle is running, ensuring driving safety. There is a jacking position on the underframe for lifting the vehicle body.

[0068] In the above scheme, the chassis includes an upper chassis frame 31 and a lower chassis frame 32, and the space between the upper chassis frame 31 and the lower chassis frame 32 can accommodate devices such as batteries. The upper chassis frame 31 and the lower chassis frame 32 are provided with skins 38 correspondingly, which can separate the upper space and the lower space of the corresponding frame. For example, steel plates are welded between corresponding beams to form an independent enclosed space, which can improve the dustproof and waterproof performance of the equipment storage space.

[0069] Furthermore, the chassis 3 further comprises: a traction beam 391, a buffer beam 392 and a bolster beam 393. The traction beam 391 extends longitudinally and is disposed at the middle position of the chassis end. The buffer beam 392 extends transversely and is located at the chassis end and is connected to the traction beam 391. The bolster beam 393 extends transversely and is disposed at the chassis end for connection with the bogie.

[0070] When the vehicle load is light, the chassis upper cross beam 33 is a beam extending in the transverse direction, and its two ends are respectively connected to the chassis upper side beam 35. When the vehicle load is heavy, a chassis middle beam 310 can also be used, extending in the longitudinal direction and located in the middle of the vehicle frame, and the two ends of the chassis weight 310 are respectively connected to the bolster beam 393. A shorter chassis upper cross beam 33 is used, one end of which is connected to the chassis upper side beam 35, and the other end is connected to the chassis middle beam 310.

[0071] The cross section of the chassis middle beam 310 can be adjusted according to the load weight. When the load weight is large, the chassis middle beam 310 with a larger cross section is used.

[0072] Furthermore, a chassis partition is used, which is arranged between the upper chassis frame and the lower chassis frame, to divide the area between the upper chassis frame and the lower chassis frame into an equipment compartment, which can accommodate batteries, brake equipment, etc. The chassis partition extends along the plane where the vertical and horizontal directions are located, so that the equipment compartments are arranged in sequence along the longitudinal direction. Using the upper and lower chassis frames of the chassis as a box for installing equipment is equivalent to setting the equipment box and the chassis as an integrated structure, without the need for an additional box structure, which can reduce the weight of the vehicle body.

[0073] Furthermore, an equipment door is provided at the lower part of the side of the vehicle body, which is connected between the edges of the upper frame of the chassis and the lower frame of the chassis and can be opened to the outside of the vehicle body; the equipment door is connected to the edge of the upper frame of the chassis or the lower frame of the chassis through a hinge.

[0074] The equipment compartment door can be opened to put equipment into the equipment compartment, or to take equipment out, so as to perform maintenance and replacement on the corresponding equipment.

[0075] Taking the insertion of a battery as an example, this embodiment provides an implementation method: Fig.14 and Fig.15 As shown, the vehicle body skirt 5 is provided with an opening corresponding to the equipment hatch 61. The equipment hatch 61 is located in the opening of the vehicle body skirt 5, and the bottom of the equipment hatch 61 is hinged to the vehicle body skirt 5, so that the equipment hatch 61 can be flipped up to close, or flipped down to open, so that the battery is exposed.

[0076] A specific solution is: Fig.14 , Fig.15 , Fig.16 , Fig.17 and Fig.18 As shown, a guide rail 62 extending in the transverse direction and an equipment bracket 64 for carrying a battery 63 are provided in the equipment compartment, and a guide wheel 65 that can move along the guide rail 62 is provided at the bottom of the equipment bracket 64 .

[0077] The device door 61 is flipped downward to open, and the device bracket 64 moves outward through the guide wheel 65 and the guide rail 62, and the battery 63 on the device bracket 64 can be maintained or replaced. After the maintenance is completed, the device bracket 64 is moved inward, and then the device door 61 is closed.

[0078] One implementation is: the guide rail 62 includes: a fixed guide rail 621, a movable guide rail 622 and a door guide rail 623. The door guide rail 623 is fixedly arranged on the inner surface of the equipment cabin door 61; the fixed guide rail 621 is fixedly arranged on the bottom of the equipment cabin; one end of the movable guide rail 622 is hinged to the fixed guide rail 621, and when the equipment cabin door is closed, the movable guide rail 622 can be flipped upward to a storage state; when the equipment cabin door is opened, the movable guide rail 622 can be flipped downward to one end docking with the fixed guide rail 621 and the other end docking with the door guide rail 623, and the guide wheel 65 can roll on the fixed guide rail 621, the movable guide rail 622 and the door guide rail 623, so that the equipment bracket 64 can move outward from the equipment cabin to the top of the equipment cabin door 61 in the open state, and completely extend out of the equipment cabin, which is convenient for operators to perform maintenance operations, such as Fig.19 and Fig. 20 After maintenance, all guide rails can be retracted into the equipment compartment without taking up space.

[0079] Furthermore, a connecting rod assembly is provided between the equipment compartment and the equipment compartment door 61, for pulling the equipment compartment door 61 when the equipment compartment door 61 is in an open state, so as to prevent the equipment compartment door 61 from flipping downward excessively and causing the battery to fall.

[0080] A specific implementation: The connecting rod assembly includes a first connecting rod 66 and a second connecting rod 67, wherein one end of the first connecting rod 66 is hinged to the upper frame of the chassis, and the other end is hinged to the second connecting rod 67; the second connecting rod 67 is hinged to the equipment cabin door 61. When the equipment cabin door 61 is in a closed state, the first connecting rod 66 and the second connecting rod 67 are folded and stored in the equipment cabin. When the equipment cabin door 61 is opened, the first connecting rod 66 and the second connecting rod 67 rotate and stretch, applying an upward pulling force to the equipment cabin door 61.

[0081] In the above scheme, the skin material used for the car body can be steel plate, specifically nickel-chromium weathering steel. When the steel plate thickness is ≤2.5mm, Q310NQL2 is used, and when the thickness is 3mm to 6mm, Q345NQR2 is used. The material conforms to the provisions of TB / T 1979 "Atmospheric Corrosion Resistant Steel for Railway Vehicles" or other similar material standards.

[0082] Various beams used in the car body can be made of steel materials. For example, steel and plates with a thickness of more than 6mm can be made of ordinary carbon steel Q235B, nickel-chromium weathering steel Q345NQR2, Q450NQR1, Q550NQR1 or low-alloy high-strength structural steel Q355, which respectively comply with the requirements of GB / T700 "Carbon Structural Steel", TB / T1979 "Atmospheric Corrosion Resistant Steel for Railway Vehicles" or GB / T 1591 "Low-alloy High-strength Structural Steel".

[0083] The side wall door pillar 16 is made of large-section cold-bent steel, and the second roof curved beam 23 connected to the door pillar 16 is also made of cold-bent steel consistent with the door pillar 16. This improves the overall rigidity of the door entrance area and the vertical and torsional rigidity of the vehicle body. The cold-bent steel is made of high-strength Q450NQR2 weathering steel, with a plate thickness of 6mm and a rectangular section of 70mm×200mm.

[0084] In the above scheme, the chassis adopts a frame-type fish belly structure. On the one hand, the upper chassis frame and the lower chassis frame are used to form a closed-loop structure with the side wall vertical beams and the roof, and are connected with the longitudinal beams of the car body to form a cage-type integral frame, which can improve the strength and torsional rigidity of the car body; on the other hand, the upper chassis frame and the lower chassis frame are used to install batteries, brakes and other equipment, without the need for additional equipment boxes, which is conducive to reducing the weight of the car body, reducing the weight of the car body from the original 20t to less than 15t. The strength of the car body meets the requirements of TB / T 3550.1-2019 "Locomotive and Rolling Stock Strength Design and Test Appraisal Specification Car Body Part 1: Passenger Car Body". The roof structure in the cargo compartment area is designed to prevent smashing, which can effectively protect the safety of the products in the car. The car body is made of high-weathering steel with good anti-corrosion performance. The service life of the whole vehicle is not less than 30 years, and the car body steel structure will not be cut or replaced within 15 years.

[0085] The solution provided in this embodiment can meet the vehicle's load-bearing requirements for large body openings, and the resulting cage-type body structure has strong overall load-bearing performance and good body modality. Compared with a traditional body using a main crossbeam, the body weight of this solution is reduced by at least 10%.

[0086] In addition, the solution provided by this embodiment opens up another path for the actual demand of loading large packaged goods on the side of railway vehicles, and is backward compatible with the 25G and 25T luggage cars and parcel cars in use. In terms of loading long and large goods, a simpler and faster loading and unloading solution is provided. When the weight of the goods is not large, the center beam of the chassis can be further simplified to reduce the deadweight of the vehicle body and improve the vehicle's load capacity.

[0087] Compared with the traditional vehicle body structure with a main crossbeam, the solution provided by this embodiment can flexibly install various equipment under the vehicle. When an integrated underframe equipment cabin structure is adopted, the overall weight under the vehicle can be reduced.

[0088] On the basis of the above technical solution, this embodiment further provides a freight vehicle, including the freight vehicle body provided by any of the above contents. The freight vehicle provided by this embodiment has the same technical effect as the above freight vehicle body. The freight vehicle body provided by this embodiment can meet the requirements of a parcel vehicle / postal vehicle with a running speed of 160km / h and an axle weight of no more than 16.5t.

[0089] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0091] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0093] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A freight vehicle body, characterized in that: include: Side wall; the side wall includes a side wall longitudinal beam and a side wall vertical beam; a plurality of side wall longitudinal beams are connected with the side wall vertical beams to form a side wall frame; a side door installation area is provided in the middle of the side wall; the width of the side door installation area is greater than 3m; the side wall longitudinal beam extends from the side of the side door installation area toward the end of the side wall; Roof; the roof includes a roof longitudinal beam, a first roof curved beam, a second roof curved beam, a roof side beam and a door mechanism mounting beam; a plurality of first roof curved beams are arranged at intervals, corresponding to the position of the side door mounting area; a plurality of second roof curved beams are arranged at intervals, and are located between the first roof curved beam and the longitudinal end of the roof; the length of the first roof curved beam is shorter than that of the second roof curved beam; the roof longitudinal beam is a full-length beam, and a plurality of roof longitudinal beams are connected to each of the first roof curved beams and the second roof curved beam to form a roof frame; the roof side beams extend in the longitudinal direction, connecting the ends of each of the second roof curved beams; the door mechanism mounting beam extends in the longitudinal direction, connecting the ends of each of the first roof curved beams; The chassis; the chassis comprises an upper chassis cross beam, a lower chassis cross beam, an upper chassis side beam, a lower chassis side beam and a chassis column; a plurality of upper chassis cross beams are connected to the upper chassis side beams to form an upper chassis frame; a plurality of lower chassis cross beams are connected to the lower chassis side beams to form a lower chassis frame, and the chassis column is connected between the upper chassis cross beam and the end of the lower chassis cross beam; the coverage area of ​​the lower chassis frame is smaller than that of the upper chassis frame; the lower chassis frame is located below the side door installation area; The side wall vertical beams, the second roof curved beam, and the upper cross beam of the chassis are connected correspondingly to form an upper closed-loop structure; the upper cross beam of the chassis, the lower cross beam of the chassis, and the chassis columns are connected correspondingly to form a lower closed-loop structure; at least the side wall vertical beams, the second roof curved beam, the upper cross beam of the chassis, the lower cross beam of the chassis, and the chassis columns on both sides of the side door installation area are connected to form a double closed-loop structure.

2. The freight vehicle body according to claim 1, characterized in that: Also includes: The chassis partition is arranged between the chassis upper frame and the chassis lower frame to divide the area between the chassis upper frame and the chassis lower frame into an equipment compartment.

3. The freight vehicle body according to claim 2, characterized in that: Also includes: The equipment door is connected between the edges of the upper frame of the chassis and the lower frame of the chassis, and can be opened to the outside of the vehicle body; the equipment door is connected to the edge of the upper frame of the chassis or the lower frame of the chassis through a hinge.

4. The freight vehicle body according to claim 1, characterized in that: The width of the side door installation area is greater than 7m, and the height of the side door installation area is 2.5m-3m.

5. The freight vehicle body according to claim 4, characterized in that: The width of the side door installation area is 10m.

6. The freight vehicle body according to claim 1, characterized in that: Also includes: The door pillars are arranged on both sides of the side door installation area; the bottom ends of the door pillars are connected to the bottom frame, and the top ends are connected to the second roof curved beam.

7. The freight vehicle body according to claim 3, characterized in that: A guide rail extending in the transverse direction and an equipment bracket for carrying equipment are arranged in the equipment cabin, and a guide wheel capable of moving along the guide rail is arranged at the bottom of the equipment bracket.

8. The freight vehicle body according to claim 7, characterized in that: The rails include: Fixed rails, movable rails and door rails; the door rails are fixedly arranged on the inner surface of the equipment compartment door; the fixed rails are fixedly arranged on the bottom of the equipment compartment; one end of the movable rail is hinged to the fixed rail, and when the equipment compartment door is closed, the movable rail can be flipped upward to a storage state; when the equipment compartment door is opened, the movable rail can be flipped downward to one end docking with the fixed rail and the other end docking with the door rail.

9. The freight vehicle body according to claim 7, characterized in that: It also includes: a first connecting rod and a second connecting rod; one end of the first connecting rod is hinged to the upper frame of the base frame, and the other end is hinged to the second connecting rod; the second connecting rod is hinged to the equipment cabin door.

10. A freight vehicle, characterized in that: include: A freight car body as claimed in any one of claims 1 to 9.

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