Freight vehicle body and freight vehicle

Abstract

This application provides a freight vehicle body and a freight vehicle. The freight vehicle body includes: a side wall, comprising multiple side wall longitudinal beams connected to side wall vertical beams to form a side wall frame, with a side door mounting area in the middle of the side wall; a roof, comprising roof longitudinal beams, a first roof curved beam, a second roof curved beam, a door mechanism mounting beam, and a roof side beam; and a chassis, comprising an upper chassis crossbeam, a lower chassis crossbeam, an upper chassis side beam, a lower chassis side beam, and chassis columns, correspondingly forming an upper chassis frame and a lower chassis frame connected by the chassis columns; the side wall vertical beams, the second roof curved beam, and the upper chassis crossbeam are correspondingly connected to form an upper closed-loop structure; the upper chassis crossbeam, the lower chassis crossbeam, and the chassis columns are correspondingly connected to form a lower closed-loop structure, and the upper and lower closed-loop structures on at least both sides of the side door mounting area are correspondingly connected to form a double closed-loop structure. The freight vehicle body and freight vehicle provided in this application can be equipped with a wider side door, which is beneficial for rapid loading and unloading of goods.

Description

Technical Field

[0001] This application relates to rail vehicle technology, and more particularly to a freight car body and freight vehicle. Background Technology

[0002] In recent years, the domestic market's demand for railway vehicle transportation functions has gradually diversified, placing higher demands on lightweight car bodies. Currently, railway vehicles capable of loading and unloading products include several types such as end-loading, side-loading, and top-loading, with operating speeds of 80km / h, 100km / h, 120km / h, and 160km / h, and axle loads of 16.5t, 17t, 21t, and 23t, respectively.

[0003] Comparing the above cargo loading methods, end loading requires end platforms, which are only available in railway freight yards. While flatcars can be used as end loading platforms, this requires additional vehicles in the train set, making it less economical. Top loading requires large, flat areas with large cranes or gantry cranes, placing high demands on loading auxiliary equipment and space, and lacking flexibility. Side loading can utilize currently common passenger and freight car side platforms, using forklifts and self-unloading devices. Wheeled vehicles can drive directly in and out, making this loading method highly versatile and economical.

[0004] Currently, side-loading systems typically have a side door located in the middle of the cargo compartment. The opening width of this side door is usually no more than 2.5 meters, limiting its load-bearing capacity and hindering rapid loading. Increasing the opening width of the side door would reduce the strength of the vehicle's side walls. Summary of the Invention

[0005] To address one of the aforementioned technical deficiencies, this application provides a freight vehicle body and a freight vehicle.

[0006] According to a first aspect of the embodiments of this application, a freight vehicle body is provided, comprising:

[0007] Side wall; the side wall includes side wall longitudinal beams and side wall vertical beams; multiple side wall longitudinal beams and side wall vertical beams are connected to form the side wall frame, and 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 beams extend from the side of the side door installation area toward the end of the side wall;

[0008] The roof includes roof longitudinal beams, first roof curved beams, second roof curved beams, roof side beams, and door mechanism mounting beams. Multiple first roof curved beams are spaced apart, corresponding to the positions of the side door mounting areas. Multiple second roof curved beams are spaced apart, located between the first roof curved beams and the longitudinal ends of the roof. The length of the first roof curved beams is shorter than that of the second roof curved beams. The roof longitudinal beams are continuous beams, and multiple roof longitudinal beams are connected to each of the first and second roof curved beams to form the roof frame. The roof side beams extend longitudinally, connecting the ends of each of the second roof curved beams. The door mechanism mounting beams extend longitudinally, connecting the ends of each of the first roof curved beams.

[0009] The base frame includes an upper crossbeam, a lower crossbeam, an upper side beam, a lower side beam, and uprights. Multiple upper crossbeams connect to the upper side beams to form the upper frame; multiple lower crossbeams connect to the lower side beams to form the lower frame; uprights connect the ends of the upper and lower crossbeams; the lower frame has a smaller coverage area than the upper frame; the lower frame is located below the side door installation area.

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

[0011] According to a second aspect of the embodiments of this application, a freight vehicle is provided, including: a freight vehicle body as described above.

[0012] The technical solution provided in this application embodiment includes a side wall comprising side wall longitudinal beams and side wall vertical beams; multiple 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 beams extend from the side of the side door installation area toward the end of the side wall; the roof includes roof longitudinal beams, a first roof curved beam, a second roof curved beam, a roof side beam, and a door mechanism mounting beam; multiple first roof curved beams are arranged at intervals, corresponding to the side door installation area. Location; multiple second roof curved beams are arranged at intervals, located between the first roof curved beam and the longitudinal end of the roof; the length of the first roof curved beam is less than that of the second roof curved beam; the roof longitudinal beams are continuous beams, and multiple roof longitudinal beams are connected to each of the first and second roof curved beams to form the roof frame; the roof side beams extend longitudinally and connect the ends of each of the second roof curved beams; the door mechanism mounting beams extend longitudinally and connect the ends of each of the first roof curved beams; the underframe includes an upper underframe crossbeam, a lower underframe crossbeam, and an upper underframe side beam. The underframe consists of a lower side beam and an underframe upright; multiple upper crossbeams connect to the upper side beams to form the upper frame; multiple lower crossbeams connect to the lower side beams to form the lower frame; the uprights connect between the ends of the upper and lower crossbeams; the lower frame has a smaller coverage area than the upper frame; the lower frame is located below the side door installation area, improving the strength of the side door installation area; the side wall vertical beams, the second roof curved beam, and the upper crossbeams connect to form an upper closed-loop structure; the bottom... The upper crossbeam, lower crossbeam, and lower column of the frame are connected to form a lower closed-loop structure. At least on both sides of the side door installation area, the side wall vertical beams, the second roof curved beam, the upper crossbeam, the lower crossbeam, and the lower column of the frame are connected to form a double closed-loop structure. Several closed-loop structures are connected in series by longitudinal beams to form a cage structure, which can improve the overall rigidity of the vehicle body, especially the vertical rigidity, so that a larger opening side door can be opened on the side wall, thereby improving the loading and unloading speed of goods and meeting the loading and unloading needs of large goods. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

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

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

[0016] Figure 3 This is a structural schematic diagram of the first sidewall in the cargo vehicle body provided in an embodiment of this application;

[0017] Figure 4This is a structural schematic diagram of the second sidewall in the freight vehicle body provided in an embodiment of this application;

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

[0019] Figure 6 A schematic diagram of the roof of a freight vehicle provided in an embodiment of this application from a low angle;

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

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

[0022] Figure 9 Another bottom view of the underframe of the freight vehicle body provided in the embodiments of this application;

[0023] Figure 10 This is a structural schematic diagram of the mid-section wall of the freight vehicle body provided in an embodiment of this application;

[0024] Figure 11 A perspective view of the freight vehicle body frame forming a closed-loop structure provided in the embodiments of this application;

[0025] Figure 12 A cross-sectional view showing the formation of a closed loop in the cargo vehicle body frame provided in an embodiment of this application;

[0026] Figure 13 A cross-sectional view of the freight vehicle body provided in an embodiment of this application;

[0027] Figure 14 A schematic diagram of the equipment compartment door in the freight vehicle body in a closed state, provided for an embodiment of this application;

[0028] Figure 15 A side view of the equipment compartment door in the cargo vehicle body with the door closed, provided for an embodiment of this application;

[0029] Figure 16 A schematic diagram of a cargo vehicle body with the equipment compartment door open and the battery located inside the equipment compartment, provided in an embodiment of this application.

[0030] Figure 17 A partial enlarged view of the equipment compartment door in the cargo vehicle body with the battery located inside the equipment compartment, provided in an embodiment of this application.

[0031] Figure 18 A side view of a freight vehicle body with the equipment compartment door open and the battery located inside the equipment compartment, provided in an embodiment of this application.

[0032] Figure 19 A schematic diagram of a cargo vehicle body with the equipment compartment door open and the battery extending from the equipment compartment, provided in an embodiment of this application;

[0033] Figure 20 A side view of a freight vehicle with the equipment compartment door open and the battery extending from the equipment compartment, provided in an embodiment of this application.

[0034] Figure label:

[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 post;

[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-Underframe; 31-Upper underframe frame; 32-Lower underframe frame; 33-Upper underframe crossbeam; 34-Lower underframe crossbeam; 35-Upper underframe side beam; 36-Lower underframe side beam; 37-Underframe column; 38-Skin; 391-Traction beam; 392-Buffer beam; 393-Sleeper beam; 310-Middle underframe beam; 311-Slide ramp;

[0038] 4-End wall;

[0039] 5-Body skirts;

[0040] 61-Equipment door; 62-Guide rail; 621-Fixed guide rail; 622-Moving guide rail; 623-Door guide rail; 63-Battery; 64-Equipment bracket; 65-Guide wheel; 66-First link; 67-Second link. Detailed Implementation

[0041] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0042] This embodiment provides a freight car body, which is applied to freight vehicles, especially rail vehicles.

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

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

[0045] Both the first side wall 11 and the second side wall 12 have side door mounting areas for installing side doors. Opening the side doors allows goods to be transported into or removed from the vehicle. The side door mounting area can be located in the exact center of the side wall or slightly closer to one end of the vehicle body. In this embodiment, the side door mounting area is not located in the exact center of the side wall, resulting in different longitudinal lengths on the two side walls of the side door mounting area. Figure 3 and Figure 4 As shown.

[0046] like Figure 3 and Figure 4 As shown, the first sidewall 11 and the second sidewall 12 have the same structure, both including sidewall longitudinal beams 13 and sidewall vertical beams 14. The sidewall vertical beams 14 extend vertically, and the sidewall longitudinal beams 13 extend longitudinally, extending from the side of the side door mounting area 15 towards the end of the sidewall. There are multiple sidewall longitudinal beams 13 and multiple sidewall vertical beams 14. These multiple sidewall longitudinal beams 13 and sidewall vertical beams 14 are connected to form a sidewall frame. A side door mounting area 15 is located in the middle of the sidewall. The width of the side door mounting 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 mounting area 15 can be up to one-third of the carriage length. In this embodiment, the width of the side door mounting area 15 is 5m-10m, and the height of the side door mounting area is 2.5m-3m. In addition, an inner skin is provided on the inner side of the sidewall frame, and an outer skin is provided on the outer side. The side wall longitudinal beam 13 and the side wall vertical beam 14 can be connected together by welding or other means.

[0047] like Figures 5 to 7 As shown, the roof 2 includes a roof longitudinal beam 21, a first roof curved beam 22, and a second roof curved beam 23. Among them, the roof longitudinal beam 21 is a continuous beam that extends longitudinally, and multiple roof longitudinal beams 21 are arranged side by side.

[0048] Both the first roof curved beam 22 and the second roof curved beam 23 are curved beams extending along the width of the vehicle. Multiple first roof curved beams 22 are arranged at intervals, corresponding to the positions of the side door mounting areas 15. Multiple second roof curved beams 23 are arranged at intervals, positioned between the first roof curved beams 22 and the longitudinal ends of the roof. The length of the first roof curved beams 22 is less than that of the second roof curved beams 23, to increase the height of the side door mounting areas 15.

[0049] Multiple roof longitudinal beams 21 are connected to each of the first roof curved beams 22 and the second roof curved beams 23 to form a roof frame. Roof side beams 25 extend longitudinally and connect to the ends of each of the second roof curved beams 23. Door mechanism mounting beams 26 extend longitudinally and connect to the ends of each of the first roof curved beams 22. Door mechanism mounting beams 26 are used to mount the side door drive mechanism.

[0050] like Figure 5 As shown, above the side door mounting area 15 is the first roof curved beam 22. A roof skin 27 is provided on the outer side of the roof frame. Figure 5 The image shows the roof skin 27, but the roof longitudinal beams 21 are not visible. Figure 6 The roof longitudinal beam 21 can be seen. The roof longitudinal beam 21, the first roof curved beam 22, and the second roof curved beam 23 can be connected together by welding or other methods.

[0051] like Figure 8 and Figure 9 As shown, the base frame 3 includes an upper crossbeam 33, a lower crossbeam 34, an upper side beam 35, a lower side beam 36, and a base frame column 37. The upper crossbeam 33 extends laterally, and multiple upper crossbeams 33 are arranged longitudinally at intervals. The lower crossbeam 34 extends laterally, and multiple upper crossbeams 33 are arranged longitudinally at intervals. The lower crossbeam 34 is located below the upper crossbeam 33, specifically directly below it.

[0052] The upper side beam 35 of the base frame extends longitudinally and connects to the ends of the upper crossbeams 33 of each base frame. Upper side beams 35 are provided on both the left and right sides of the base frame. The lower side beam 36 of the base frame extends longitudinally and connects to the ends of the lower crossbeams 34 of each base frame. Lower side beams 36 are provided on both the left and right sides of the base frame.

[0053] Multiple upper crossbeams 33 of the base frame are connected to two upper side beams 35 of the base frame to form the upper frame 31, and multiple lower crossbeams 34 of the base frame are connected to the lower side beams 36 of the base frame to form the lower frame 32. Base frame columns 37 are connected between the ends of the upper crossbeams 33 and the lower crossbeams 34, connecting the upper frame 31 and the lower frame 32 to form a three-dimensional frame. The coverage area of ​​the lower frame 32 is smaller than that of the upper frame 31, and the lower frame 32 is located below the side door installation area 15. The upper frame 31 and the lower frame 32 form a fish-belly shaped structure, which is equivalent to having an additional base frame structure below the side door installation area 15, thereby improving the strength of the base frame in the side door area.

[0054] The side wall vertical beam 14, the second roof curved beam 23, and the underframe upper crossbeam 33 are connected to form an upper closed-loop structure, while the underframe upper crossbeam 33, the underframe lower crossbeam 34, and the underframe column 37 are connected to form a lower closed-loop structure. At least on both sides of the side door mounting area, the side wall vertical beam 14, the second roof curved beam 23, the underframe upper crossbeam 33, the underframe lower crossbeam 34, and the underframe column 37 are connected to form a double closed-loop structure. In other words, at least on both sides of the side door mounting area, the upper and lower closed-loop structures are connected to form a double closed-loop structure. Most of the upper and lower closed-loop structures are shared, resulting in high strength. Furthermore, the upper and lower closed-loop structures are longitudinally connected together via the roof 2, side wall 1, and underframe upper side beam 35 to form a cage-like structure, which helps improve the torsional stiffness of the vehicle body.

[0055] Specifically, the upper and lower closed-loop structures can 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 can be connected to the lower closed-loop structure to form a double closed-loop structure.

[0056] Each upper closed-loop structure and lower closed-loop structure is connected by the roof longitudinal beam 21, the underframe longitudinal beam, the underframe side beam, and the side wall longitudinal beam to form a cage-like structure car body. The aforementioned underframe upper side beam 35, underframe lower side beam 36, underframe column 37, underframe upper crossbeam 33, and underframe lower crossbeam 34 can be connected to form a skeleton structure by welding or other methods.

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

[0058] Traditional trucks have a central beam at the bottom of the chassis, which improves vertical load-bearing capacity, but its torsional stiffness is still relatively weak, requiring a large-section main crossbeam. However, installing a main crossbeam occupies under-vehicle space, making it difficult to arrange equipment underneath. In this application, the cage-like frame scheme with the aforementioned upper and lower structures eliminates the need for a large-section main crossbeam, freeing up under-vehicle space for equipment placement and reducing vehicle weight.

[0059] Other examples Figure 10 As shown, end wall 4 includes end wall crossbeams and end wall vertical beams. Multiple end wall crossbeams and end walls are connected together. Specifically, resistance spot welding or plug welding can be used, which helps to improve the flatness of the weld.

[0060] like Figures 11 to 12 As shown, the side wall vertical beam 14, the second roof curved beam 23, and the underframe upper crossbeam 33 are connected to form an upper closed-loop structure. The side wall vertical beam 14, the second roof curved beam 23, the underframe lower crossbeam 34, and the underframe column 37 are connected to form a lower closed-loop structure. The aforementioned upper and lower closed-loop structures can improve the overall strength of the vehicle body, allowing for side doors with a larger opening to be opened on the side walls.

[0061] The technical solution provided in this embodiment includes a side wall comprising longitudinal beams and vertical beams; multiple longitudinal beams and vertical beams are connected to form a side wall frame; a side door mounting area is provided in the middle of the side wall, and the width of the side door mounting area is greater than 3m; the longitudinal beams extend from the side of the side door mounting area toward the end of the side wall; the roof includes roof longitudinal beams, a first roof curved beam, a second roof curved beam, roof side beams, and door mechanism mounting beams; multiple first roof curved beams are arranged at intervals, corresponding to the positions of the side door mounting areas. The vehicle is equipped with multiple second roof curved beams arranged at intervals, located between the first roof curved beam and the longitudinal ends of the roof; the length of the first roof curved beam is shorter than that of the second roof curved beam; the roof longitudinal beams are continuous beams, and multiple roof longitudinal beams are connected to each of the first and second roof curved beams to form the roof frame; the roof side beams extend longitudinally and connect the ends of each of the second roof curved beams; the door mechanism mounting beams extend longitudinally and connect the ends of each of the first roof curved beams; the underframe includes an upper underframe crossbeam, a lower underframe crossbeam, and an upper underframe side beam. The underframe consists of a lower side beam and an underframe upright; multiple upper crossbeams connect to the upper side beams to form the upper frame; multiple lower crossbeams connect to the lower side beams to form the lower frame; the uprights connect the ends of the upper and lower crossbeams; the lower frame has a smaller coverage area than the upper frame; the lower frame is located below the side door installation area, improving the strength of the side door installation area; the side wall vertical beams, the second roof curved beam, and the upper crossbeams are connected to form an upper closed-loop structure; the bottom... The upper crossbeam, lower crossbeam, and lower column of the frame are connected to form a lower closed-loop structure. At least on both sides of the side door installation area, the side wall vertical beams, the second roof curved beam, the upper crossbeam, the lower crossbeam, and the lower column of the frame are connected to form a double closed-loop structure. Several closed-loop structures are connected in series by longitudinal beams to form a cage structure, which can improve the overall rigidity of the vehicle body, especially the vertical rigidity, so that a larger opening side door can be opened on the side wall, thereby improving the loading and unloading speed of goods and meeting the loading and unloading needs of large goods.

[0062] The inner and outer sides of the sidewall frame are covered with skin, which not only serves a decorative purpose but also helps to improve the torsional stiffness of the cage frame.

[0063] When the width of the side door installation area 15 is about 10m, the width of the roof 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-formed 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 is a large-section continuous beam, which can not only support the installation of the side doors, but also improve the overall rigidity of the roof.

[0065] Furthermore, such as Figure 13 As shown, door pillars 16 are installed on both sides of the side door installation area 15. The bottom end of the door pillar 16 is connected to the base frame 3, and the top end is connected to the second roof curved beam 23. The door pillars 16 can be made of large-section profiles, such as large-section cold-formed steel, which can improve the vertical stiffness and torsional stiffness of the vehicle body, thereby improving the strength of the side door installation and the stability of the opening and closing process, which is also conducive to improving vehicle driving safety.

[0066] like Figure 13 As shown, a door mechanism mounting beam 26 is provided on the roof for mounting the upper part of the door mechanism. A sliding track 311 is provided at the outer end of the underframe upper crossbeam 33 in the side door mounting area 15. The sliding track 311 extends longitudinally and spans multiple underframe upper crossbeams 33. The side door can be embedded in the sliding track 311 and slide within the sliding track 311 to realize the opening and closing of the side door.

[0067] In addition, the underframe and bogie interfaces at corresponding positions on the bogie are matched to ensure that the bogie and underframe will not collide during vehicle operation, thus ensuring driving safety. The underframe in Shanghai is equipped with a top-mounted position for lifting and raising the car body.

[0068] In the above solution, the base frame includes an upper base frame 31 and a lower base frame 32. The space between the upper base frame 31 and the lower base frame 32 can accommodate equipment such as batteries. Skins 38 are correspondingly provided on the upper base frame 31 and the lower base frame 32, which can separate the upper and lower spaces of the corresponding frames. For example, steel plates can be welded between the corresponding beams to form an independent, sealed space, improving the dustproof and waterproof performance of the equipment storage space.

[0069] Furthermore, the underframe 3 also includes a traction beam 391, a buffer beam 392, and a bolster beam 393. The traction beam 391 extends longitudinally and is located at the middle of the underframe end. The buffer beam 392 extends laterally and is located at the underframe end, connected to the traction beam 391. The bolster beam 393 extends laterally and is located at the underframe end for connection with the bogie.

[0070] When the vehicle load is light, the upper crossbeam 33 of the underframe is a beam that runs horizontally, with both ends connected to the upper side beam 35 of the underframe. When the vehicle load is heavy, a middle beam 310 of the underframe can also be used, extending longitudinally and located in the middle of the frame, with both ends of the middle beam 310 connected to the bolster beam 393. Alternatively, a shorter upper crossbeam 33 can be used, with one end connected to the upper side beam 35 of the underframe and the other end connected to the middle beam 310 of the underframe.

[0071] The cross-section of the underframe beam 310 can be adjusted according to the load capacity. When the load capacity is large, the underframe beam 310 with a larger cross-sectional area is used.

[0072] Furthermore, a chassis partition is used, positioned between the upper and lower chassis frames, to divide the area between them into an equipment compartment that can accommodate batteries, braking equipment, etc. The chassis partition extends along both the vertical and horizontal planes, allowing the equipment compartments to be arranged longitudinally. By utilizing the upper and lower chassis frames as the housing for the equipment, the equipment housing and chassis are essentially integrated into a single structure, eliminating the need for an additional housing structure and reducing the vehicle's weight.

[0073] Furthermore, an equipment compartment door is provided on the lower part of the side of the vehicle body, which is connected between the edge of the upper frame and the lower frame of the underframe and can be opened to the outside of the vehicle body; the equipment compartment door is connected to the edge of the upper frame or the lower frame of the underframe by hinges.

[0074] Opening the equipment compartment door allows for the placement or removal of equipment for maintenance and replacement.

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

[0076] One specific solution is: such as Figure 14 , Figure 15 , Figure 16 , Figure 17 and Figure 18 As shown, the equipment compartment is provided with a guide rail 62 extending laterally and an equipment bracket 64 for carrying the battery 63. The bottom of the equipment bracket 64 is provided with a guide wheel 65 that can move along the guide rail 62.

[0077] Flip down to open the equipment compartment door 61. The equipment bracket 64 moves outward via guide wheels 65 and guide rail 62, allowing maintenance or replacement of the battery 63 on the equipment bracket 64. After maintenance, move the equipment bracket 64 inward and then close the equipment compartment door 61.

[0078] One embodiment is as follows: 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 disposed on the inner surface of the equipment compartment door 61; the fixed guide rail 621 is fixedly disposed on the bottom of the equipment compartment; one end of the movable guide rail 622 is hinged to the fixed guide rail 621. When the equipment compartment door is closed, the movable guide rail 622 can be flipped upward to a retracted state; when the equipment compartment door is open, the movable guide rail 622 can be flipped downward to a position where one end engages with the fixed guide rail 621 and the other end engages with the door guide rail 623. 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 from inside the equipment compartment to above the open equipment compartment door 61, extending completely out of the equipment compartment, facilitating maintenance operations by the operator. Figure 19 and Figure 20 After maintenance is complete, all guide rails can be retracted into the equipment compartment, saving space.

[0079] Furthermore, a linkage assembly is provided between the equipment compartment and the equipment door 61 to pull the equipment door 61 when it is in the open state, so as to prevent the equipment door 61 from tilting downwards excessively and causing the battery to fall out.

[0080] One specific embodiment: The linkage assembly includes a first link 66 and a second link 67, wherein one end of the first link 66 is hinged to the upper frame of the base frame, and the other end is hinged to the second link 67; the second link 67 is hinged to the equipment compartment door 61. When the equipment compartment door 61 is in the closed state, the first link 66 and the second link 67 are folded and stored inside the equipment compartment. When the equipment compartment door 61 is opened, the first link 66 and the second link 67 rotate and extend, applying an upward pulling force to the equipment compartment 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~6mm, Q345NQR2, etc., 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] The various beams used in the car body can be made of structural steel materials, such as ordinary carbon steel Q235B, nickel-chromium weathering steel Q345NQR2, Q450NQR1, Q550NQR1 or low alloy high strength structural steel Q355, etc., which respectively comply with the provisions 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-formed steel, and the second roof beam 23, which is connected to the door pillar 16, is also made of the same cold-formed steel. This improves the overall rigidity of the doorway area and enhances the vertical and torsional rigidity of the vehicle body. The cold-formed steel is made of high-strength Q450NQR2 weathering steel, with a plate thickness of 6mm and a rectangular cross-section of 70mm × 200mm.

[0084] In the above scheme, the underframe adopts a frame-type fish-belly structure. On the one hand, the upper and lower underframe frames, together with the side wall vertical beams and the roof, form a closed-loop structure, which is connected to the longitudinal beams of the car body to form a cage-like overall frame, improving the car body strength and torsional stiffness. On the other hand, the upper and lower underframe frames are used to install batteries, brakes, and other equipment, eliminating the need for additional equipment housings, which helps reduce the car body weight from the original 20t to below 15t. The car body strength meets the requirements of TB / T 3550.1-2019 "Specifications for Strength Design and Testing of Locomotives and Rolling Stock - Part 1: Passenger Car Body". The roof structure in the cargo compartment area is designed with anti-impact protection to effectively protect the safety of the products inside the car. The car body is made of high weathering steel, with good corrosion resistance, and the overall service life is not less than 30 years, with no need for repair or replacement of the car body steel structure within 15 years.

[0085] The solution provided in this embodiment can meet the load-bearing requirements of vehicles with large openings in the body, and the resulting cage-like body structure has strong overall load-bearing capacity and good body modal characteristics. Compared with the traditional body using a main crossbeam, the weight of the body in this solution is reduced by at least 10%.

[0086] Furthermore, the solution provided in this embodiment opens up another path for meeting the practical needs of side-loading large, fully-assembled cargo on railway vehicles, and is backward compatible with existing 25G and 25T baggage cars and parcel cars. For loading long and oversized cargo, it offers a simpler and faster loading and unloading solution. When the cargo weight is not large, the underframe beams can be further simplified, reducing the car body's weight and increasing the vehicle's load-bearing capacity.

[0087] Compared to traditional vehicle body structures with main crossbeams, the solution provided in this embodiment allows for flexible installation of various equipment under the vehicle. Furthermore, when an integrated underframe equipment compartment structure is used, the overall weight of the undercarriage can be significantly reduced.

[0088] Based on the above technical solutions, this embodiment also provides a freight vehicle, including the freight vehicle body provided in any of the above-mentioned contents. The freight vehicle provided in this embodiment has the same technical effects as the freight vehicle body described above. The freight vehicle body provided in this embodiment can meet the requirements of a running speed of 160km / h and an axle load not exceeding 16.5t for parcel / postal vehicles.

[0089] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0092] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0093] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A freight vehicle body, characterized in that, include: Side wall; the side wall includes side wall longitudinal beams and side wall vertical beams; multiple side wall longitudinal beams and side wall vertical beams are connected to form the side wall frame, and 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 beams extend from the side of the side door installation area toward the end of the side wall; The roof includes roof longitudinal beams, first roof curved beams, second roof curved beams, roof side beams, and door mechanism mounting beams. Multiple first roof curved beams are spaced apart, corresponding to the positions of the side door mounting areas. Multiple second roof curved beams are spaced apart, located between the first roof curved beams and the longitudinal ends of the roof. The length of the first roof curved beams is shorter than that of the second roof curved beams. The roof longitudinal beams are continuous beams, and multiple roof longitudinal beams are connected to each of the first and second roof curved beams to form the roof frame. The roof side beams extend longitudinally, connecting the ends of each of the second roof curved beams. The door mechanism mounting beams extend longitudinally, connecting the ends of each of the first roof curved beams. The base frame includes an upper crossbeam, a lower crossbeam, an upper side beam, a lower side beam, and uprights. Multiple upper crossbeams connect to the upper side beams to form the upper frame; multiple lower crossbeams connect to the lower side beams to form the lower frame; uprights connect the ends of the upper and lower crossbeams; the lower frame has a smaller coverage area than the upper frame; the lower frame is located below the side door installation area. The side wall vertical beams, the second roof curved beam, and the underframe upper crossbeam are connected to form an upper closed-loop structure; the underframe upper crossbeam, the underframe lower crossbeam, and the underframe column are connected to form a lower closed-loop structure; at least on both sides of the side door installation area, the side wall vertical beams, the second roof curved beam, the underframe upper crossbeam, the underframe lower crossbeam, and the underframe column are connected to form a double closed-loop structure.

2. The freight vehicle body according to claim 1, characterized in that, Also includes: The base frame partition is located between the upper and lower base frame frames, dividing the area between them into an equipment compartment.

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

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: Door pillars are installed on both sides of the side door installation area; the bottom of the door pillar is connected to the base frame, and the top is connected to the second roof curved beam.

7. The freight vehicle body according to claim 3, characterized in that, The equipment compartment is equipped with guide rails that extend laterally and equipment brackets for supporting the equipment. The bottom of the equipment brackets is equipped with guide wheels that can move along the guide rails.

8. The freight vehicle body according to claim 7, characterized in that, The guide rail includes: Fixed guide rail, movable guide rail and door guide rail; the door guide rail is fixedly installed on the inner surface of the equipment compartment door; the fixed guide rail is fixedly installed at the bottom of the equipment compartment; one end of the movable guide rail is hinged to the fixed guide rail, and when the equipment compartment door is closed, the movable guide rail can be flipped upward to the storage state; when the equipment compartment door is open, the movable guide rail can be flipped downward to the point where one end connects with the fixed guide rail and the other end connects with the door guide rail.

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

10. A freight vehicle, characterized in that, include: The freight vehicle body as described in any one of claims 1-9.

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