A vehicle body, a rail vehicle and an intelligent freight transportation system

Abstract

The embodiment of the application provides a vehicle body, a rail vehicle and an intelligent freight transportation system, the vehicle body comprises a roof assembly, a middle frame assembly and a chassis assembly; the middle frame comprises two side walls which are arranged in a transverse direction and are spaced apart, and a plurality of large-opening doorways are arranged in a longitudinal direction opposite to the side walls, and the large-opening doorways are provided with side door support frames, so as to improve the structural strength of the large-opening doorway and disperse the stress of the doorway area; the structure is weakened due to the large-opening doorway, and the weakening is compensated by arranging a partition wall frame assembly, the top load is effectively transmitted to the chassis, local rigid support is provided, and the deformation of the doorway area is inhibited; the bottom cross beam is fixed with the side door support frame, so as to enhance the structural strength of the bottom of the doorway area, improve the torsional stiffness, and help the load to be uniformly distributed to the chassis. The above device effectively enhances the structural stability of the large-opening doorway area while ensuring the overall strength of the vehicle body, improves the carrying capacity and the torsional stiffness of the vehicle body, supports modular manufacturing and standardized assembly.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, specifically to a car body, a rail vehicle, and an intelligent freight system. Background Technology

[0002] In addition to dedicated freight trains, with the continuous standardization of express delivery services, goods are packaged in standardized containers and bags specifically designed for high-speed rail express delivery and stored in express delivery lockers, dining car counters, and other spacious carriages on passenger trains, forming express delivery services carried on passenger trains and passenger-freight intermodal express delivery. In recent years, with the increasing demand for high-speed rail express delivery, it has moved beyond simply carrying goods on passenger trains and using passenger-freight intermodal transport models, and has begun to seek to upgrade passenger trains to improve transport capacity. Modified or developed high-speed / conventional rail express trains utilize "station-to-station" passenger-freight shared lines for transport.

[0003] The aforementioned railway freight transport all suffer from relatively inefficient manual loading and unloading operations, semi-mechanized operations, and mechanized operations. However, overall, it suffers from a lack of variety in transported goods, low loading and unloading efficiency, long platform stops for dedicated trains, and poor door-to-door connections.

[0004] Existing passenger-dedicated freight train transportation technologies, designed for large volumes of e-commerce goods, time-sensitive items, and high-value-added goods, suffer from insufficient side doors on the trains, failing to meet the requirements for loading and unloading in extremely short timeframes. Furthermore, the gaps in the side doors result in a loss of vehicle rigidity, affecting the overall load-bearing capacity of the trains. The door mechanisms also occupy interior loading space. Summary of the Invention

[0005] This application provides a vehicle body, a rail vehicle, and an intelligent freight system to address the problems of insufficient side-opening doors and lack of rigidity in existing vehicles, which affect the overall load-bearing capacity of the vehicle.

[0006] To achieve the above objectives, this application provides the following technical solution: A vehicle body, characterized in that it comprises a roof assembly, a middle frame assembly, and a chassis assembly, wherein the middle frame assembly is located between the roof assembly and the chassis assembly; the middle frame assembly includes: Two side walls are spaced apart laterally, and the two side walls are provided with several large-opening doorways facing each other longitudinally, and the large-opening doorways are provided with side door support frames; A top mounting frame is fixed to the top of the side wall. The top mounting frame includes several top beams, which are located at both ends of the wide-opening doorway and are arranged laterally. The partition wall frame is located below the top beam and is fixed to the top beam, the side door support frame, and the base frame. The bottom beam consists of several bottom beams arranged laterally, and the bottom beams are fixed to the side door support frame.

[0007] This application also provides a rail vehicle, including the vehicle body described in any of the above embodiments.

[0008] This application also provides an intelligent freight system, including an intelligent unit vehicle and the rail vehicle described in the above embodiments.

[0009] The vehicle body, rail vehicle, and intelligent freight system provided in this application embodiment have the following technical advantages compared to the prior art: In this application, the vehicle body includes a roof assembly, a middle frame assembly, and a chassis assembly. The middle frame includes two side walls spaced laterally, and several large-opening doorways are longitudinally opposite each other on the side walls. Side door support frames are provided for the large-opening doorways to improve the structural strength at these locations and distribute stress in the doorway area. Simultaneously, the partition wall frame assembly compensates for the structural weakening caused by the large-opening doorways, effectively transferring the top load to the chassis and providing localized rigid support to suppress deformation in the doorway area. Furthermore, the bottom crossbeam is fixed to the side door support frames to enhance the bottom structural strength of the doorway area, improve torsional stiffness, and help distribute the load evenly to the chassis. This device, while ensuring the overall strength of the vehicle body, effectively enhances the structural stability of the large-opening doorway area, improving the vehicle body's load-bearing capacity and torsional stiffness, and supporting modular manufacturing and standardized assembly. Attached Figure Description

[0010] 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: Figure 1 This is a schematic diagram of the structure of an intelligent freight system provided in the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of an intelligent freight system provided in the second embodiment of this application; Figure 3 for Figure 2 A partial sectional view of the structure; Figure 4 This is a schematic diagram of the structure of the intermediate frame provided in the embodiments of this application; Figure 5 for Figure 4 A partially enlarged structural diagram; Figure 6 for Figure 4 Front view structural diagram; Figure 7 This is a partial structural diagram of the vehicle body provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the partition wall frame provided in the embodiments of this application; Figure 9 This is a schematic diagram of the structure of the bottom crossbeam provided in an embodiment of this application; Figure 10 The structural schematic diagrams of the side door support frame and the central support frame provided in the embodiments of this application are as follows: Figure 11 A schematic diagram of the assembly structure of the vehicle body and the intelligent unit vehicle provided in the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the intelligent unit vehicle provided in the embodiments of this application; Figure 13 This is a cross-sectional structural diagram of the base frame provided in the embodiments of this application; Figure 14 A cross-sectional structural schematic diagram of the side beam of the underframe provided in an embodiment of this application; Figure 15 This is a bottom view of the base frame structure provided in the embodiments of this application.

[0011] The following labels are shown in the attached diagram: Vehicle body 8900; Roof assembly 8910, middle frame assembly 8920, underframe assembly 8930, enclosed elastomer assembly 8940, enclosed guide elastomer assembly 8950, intelligent unit trolley 8960; Side wall 89201, large opening doorway 89202, side door support frame 89203, top mounting frame 89204, partition wall frame 89205, bottom beam 89206, middle support frame 89207; Top crossbeam 892041, top longitudinal beam 892042; Rectangular frame 892051, cross-shaped frame 892052; Bottom crossbeam 892061; Groove 892071, fixing hole 892072; docking groove 89601; Base frame side beam 89301, base frame middle beam 89302, cross beam 89303, corrugated plate 89304, skirt plate 89305, side beam web plate 89306. Detailed Implementation

[0012] This invention discloses a vehicle body, a rail vehicle, and an intelligent freight system to solve the problems of insufficient number of side doors and lack of rigidity in existing vehicles, which affect the overall load-bearing capacity of the vehicle.

[0013] 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.

[0014] Please see Figure 1-12 , Figure 1 This is a schematic diagram of the structure of an intelligent freight system provided in the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of an intelligent freight system provided in the second embodiment of this application; Figure 3 for Figure 2 A partial sectional view of the structure; Figure 4 This is a schematic diagram of the structure of the intermediate frame provided in the embodiments of this application; Figure 5 for Figure 4 A partially enlarged structural diagram; Figure 6 for Figure 4 Front view structural diagram; Figure 7 This is a partial structural diagram of the vehicle body provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the partition wall frame provided in the embodiments of this application; Figure 9 This is a schematic diagram of the structure of the bottom crossbeam provided in an embodiment of this application; Figure 10 The structural schematic diagrams of the side door support frame and the central support frame provided in the embodiments of this application are as follows: Figure 11 A schematic diagram of the assembly structure of the vehicle body and the intelligent unit vehicle provided in the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the intelligent unit vehicle provided in an embodiment of this application.

[0015] In one specific embodiment, the vehicle body 8900 provided in this application includes a roof assembly 8910, a middle frame assembly 8920, and a chassis assembly 8930, wherein the middle frame assembly 8920 is located between the roof assembly 8910 and the chassis assembly 8930; the middle frame assembly 8920 includes: Two side walls 89201 are arranged horizontally at intervals, and the two side walls 89201 are provided with several large-opening doorways 89202 in the longitudinal direction. The large-opening doorways 89202 are provided with side door support frames 89203. The top mounting frame 89204 is fixed to the top of the side wall 89201. The top mounting frame 89204 includes several top beams 892041. The top beams 892041 are located at both ends of the longitudinal direction of the large opening door 89202 and are arranged in the transverse direction. The partition wall frame assembly 89205 is located below the top beam 892041 and is fixed to the top beam 892041, the side door support frame 89203 and the base frame assembly 8930 respectively. The bottom crossbeam 892061 forms 89206, which includes several bottom crossbeams 892061 arranged in the horizontal direction. The bottom crossbeams 892061 are fixed to the side door support frame 89203.

[0016] The roof assembly 8910 forms the upper space of the car body 8900, which is fixedly connected to the top mounting frame 89204 to form a complete top load-bearing structure. The underframe assembly 8930 serves as the basic load-bearing structure of the entire car body 8900. It is connected to the bogie and bears and transmits the load of the entire vehicle. The structural connection is achieved through the partition frame assembly 89205 and the bottom crossbeam 892061 to form 89206, forming a complete vertical force transmission path.

[0017] The top crossbeam 892041, partition wall frame, and bottom crossbeam 892061 of the intermediate frame together constitute a composite support system; the intermediate frame component 8920 includes side walls 89201, top mounting frame 89204, partition wall frame component 89205, and bottom crossbeam 892061 component 89206; among them, the two side walls 89201 are arranged at transverse intervals along the rail vehicle, and each side wall 89201 is provided with multiple large-opening doors 89202 in the longitudinal direction, which are used for the intelligent unit warehouse of the intelligent freight system to move onto the vehicle body 8900, providing space for the autonomous loading and unloading of the intelligent unit warehouse. The large-opening doors 89202 are provided with side door support frames 89203, which serve as support units for the large-opening doors 89202, improve the structural strength at the door, disperse the stress in the door area, and prevent local deformation or fatigue fracture. The side door support frame 89203 is preferably a rectangular frame 892051 structure, which is set inside the large-opening doorway 89202, and is preferably detachably fixed to the side wall 89201 to facilitate disassembly and modular manufacturing.

[0018] The top mounting frame 89204 and the roof assembly 8910 together serve as the top load-bearing structure of the roof. The top mounting frame 89204 is located on top of the side wall 89201 and is detachably and fixedly connected to the side wall 89201 and the roof assembly 8910 to realize the transfer of roof load. The top mounting frame 89204 includes top longitudinal beams 892042 and several top transverse beams 892041. Two top longitudinal beams 892042 are arranged laterally opposite each other and are located on the top of the corresponding side walls 89201. The top transverse beams 892041 are located between the two top longitudinal beams 892042. The two ends of any top transverse beam 892041 are fixedly connected to the top longitudinal beams 892042. The top mounting frame 89204 is formed by the top transverse beams 892041 and the top longitudinal beams 892042. With the large opening door 89202 provided, the additional top mounting frame 89204 is set together with the roof to form 8910, which enhances the strength of the top structure and meets the strength requirements of the whole vehicle.

[0019] The partition frame assembly 89205 is located between the top mounting frame 89204 and the base frame assembly 8930. Its upper part is fixed to the top crossbeam 892041, its middle part is fixed to the side door support frame 89203, and its lower part is fixed to the base frame assembly 8930. It constructs a vertical force transmission path, effectively transferring the top load to the base frame assembly 8930, compensating for the structural weakening caused by the door opening. It provides local rigid support to suppress deformation in the door area, while improving the overall load-bearing capacity and torsional stiffness of the vehicle body 8900.

[0020] The bottom crossbeam 892061 assembly 89206 includes several bottom crossbeams 892061 arranged laterally, which enhance the strength of the bottom structure in the doorway area, improve the torsional stiffness, provide support for the floor structure, and help distribute the load evenly to the base frame assembly 8930.

[0021] The vehicle body 8900, rail vehicle, and intelligent freight system provided in this application embodiment have the following technical advantages compared to the prior art: In this application, the vehicle body 8900 includes a roof assembly 8910, a middle frame assembly 8920, and a chassis assembly 8930. The middle frame includes two side walls 89201 spaced laterally, and the side walls 89201 are longitudinally opposite to each other with several large-opening doorways 89202. The large-opening doorways 89202 are provided with side door support frames 89203 to improve the structural strength of the large-opening doorways 89202 and disperse the stress in the doorway area. At the same time, the partition wall frame assembly 89205 is provided to compensate for the structural weakening caused by the opening of the large-opening doorways 89202. It effectively transfers the top load to the chassis and provides local rigid support to suppress the deformation of the doorway area. Secondly, the bottom crossbeam 892061 is fixed to the side door support frame 89203 to enhance the bottom structural strength of the doorway area, improve the torsional stiffness, and help to evenly distribute the load to the chassis. The aforementioned device, while ensuring the overall strength of the vehicle body 8900, effectively enhances the structural stability of the area of ​​the large-opening doorway 89202, thereby improving the load-bearing capacity and torsional stiffness of the vehicle body 8900 and supporting modular manufacturing and standardized assembly.

[0022] In one specific embodiment, the vehicle body 8900 also includes several central support frames 89207, which are located in the middle of the vehicle body 8900 in the transverse direction. The central support frames 89207 are arranged in a one-to-one correspondence with the side door support frames 89203. The central support frames 89207 are fixedly connected to the top crossbeam 892041, the partition wall frame 89205 and the bottom crossbeam 892061 89206 respectively.

[0023] The central support frame 89207 is located in the transverse center of the vehicle body 8900, parallel to the side door support frame 89203. The central support frame 89207, together with the side door support frames 89203 on both sides of the vehicle body 8900, forms a three-way support structure. This provides additional support points at the concentrated load areas in the doorway region, preventing deformation or stress concentration, increasing the lateral force transmission path, and improving the overall torsional rigidity of the vehicle. Simultaneously, the central support frame 89207 more evenly transmits the top load to the underframe assembly 8930. Its modular structure facilitates individual prefabrication and assembly, improving production efficiency and assembly accuracy. The structure of the central support frame 89207 can be designed with reference to the side door support frame 89203; preferably, the two have identical structures to facilitate modularization and reduce manufacturing costs.

[0024] The specific load transfer path is as follows: the load on the roof is transferred to the top crossbeam 892041, and then to the middle support frame 89207 and the side door support frame 89203 respectively. The middle support frame 89207 transfers part of the load downward to the bottom crossbeam 892061, and the bottom crossbeam 892061 transfers the load to the underframe assembly 8930. This achieves multi-point support and multi-path force transfer. The middle support frame 89207 makes up for the shortcomings of the traditional vehicle body 8900, which relies only on the two sides for support, and enhances the strength of the middle structure. It is precisely matched to the door position to achieve local structural reinforcement. Together with the top crossbeam 892041, the partition frame, and the bottom crossbeam 892061, it forms a closed force system, which significantly improves the structural strength and stability of the door area, effectively disperses the load, reduces the risk of local stress concentration, and improves the torsional performance of the whole vehicle.

[0025] Specifically, the partition frame assembly 89205 is located laterally between the side door support frame 89203 and the central support frame 89207; the partition frame assembly 89205 is fixed to the central support frame 89207; a partition frame assembly 89205 is provided between each side door support frame 89203 and the central support frame 89207, forming a connecting bridge between them, realizing a smooth transition of load from the side door support frame 89203 to the central support frame 89207, thereby enhancing structural continuity, avoiding stress concentration, and improving the overall lateral stiffness of the vehicle body 8900. The partition frame assembly 89205 and the central support frame 89207 are connected by a detachable fixing method, such as bolt connection, so that the two form a stable force-bearing system, effectively transferring the load transmitted by the top crossbeam 892041 to the bottom crossbeam 892061, improving the structural torsional resistance during dynamic operation.

[0026] Furthermore, the partition frame 89205 includes a rectangular frame 892051 and a star-shaped frame 892052 located within the rectangular frame 892051, with each vertex of the star-shaped frame 892052 fixed to the rectangular frame 892051.

[0027] The top edge of the rectangular frame 892051 is located below the top crossbeam 892041. The two sides of the rectangular frame 892051 are fixed to the side door support frame 89203 and the central support frame 89207, respectively. The bottom edge of the rectangular frame 892051 is fixed to the base frame assembly 8930. This allows the load of the side door support frame 89203 to be transferred to the central support frame 89207 via the partition wall frame assembly 89205, achieving multi-path force distribution and uniform load distribution. Simultaneously, the partition wall frame assembly 89205 is fixedly connected to the central support frame 89207 and positioned between the side door support frame 89203 and the central support frame 89207, forming a transverse closed force ring. This significantly enhances the torsional stiffness of the vehicle body 8900 and reduces torsional deformation caused by uneven force distribution on the left and right sides.

[0028] Specifically, each top crossbeam 892041 is provided with two partition wall frames 89205 below it. One end of each partition wall frame 89205 is fixed to the side door support frame 89203, and the other end is fixed to the middle support frame 89207, so as to further improve the rigidity of the vehicle body 8900.

[0029] In another embodiment, one end of the bottom crossbeam 892061 is fixed to the side door support frame 89203, and the other end is fixed to the central support frame 89207. The bottom crossbeam 892061, while connected to the underframe, is also fixed to the side door support frame 89203, directly participating in the load-bearing capacity of the doorway area. This helps to effectively transfer the local load of the doorway area to the bottom structure. The other end of the underframe is fixed to the central support frame 89207, spanning the width of the vehicle body 8900, forming a lateral tie and strengthening the structural connection between the middle and sides of the vehicle body 8900. Several bottom crossbeams 892061 are arranged continuously in the lateral direction on both sides of the central support frame 89207, thereby ensuring structural continuity and improving load-bearing capacity.

[0030] Based on the above embodiments, a deformable closed elastomer assembly 8940 is also included. The closed elastomer assembly 8940 is arranged circumferentially along the side door support frame 89203 or the central support frame 89207. When the closed elastomer assembly 8940 is in a full state, it is used to seal and fix the outer edge of the intelligent unit car 8960 and the car body 8900.

[0031] The enclosed elastic component is a flexible sealing structure capable of expansion and contraction. It can be made of rubber, silicone, TPU, or other high-molecular elastic materials and can be filled with gas or liquid to achieve volume changes. When the intelligent unit trolley 8960 enters the car body 8900 through the large-opening door 89202, the enclosed elastic component 8940 seals the side door support frame 89203 and the intelligent unit trolley 8960, forming an airtight space. This achieves the seal at the large-opening door 89202 of the car body 8900. The end wall of the intelligent unit trolley 8960 functions as a "door" for the rail vehicle, cooperating with the large-opening door 89202, and the two are fixed and sealed by the enclosed elastic component 8940. When fully inflated, the enclosed elastic component 8940 applies pressure to the intelligent unit trolley 8960, achieving temporary clamping. At the same time, the elastic material has a certain energy absorption capacity, playing a shock-absorbing role during operation.

[0032] It is understandable that both the side door support frame 89203 and the middle support frame 89207 are respectively provided with closed elastomer components 8940 in the circumferential direction. The closed elastomer components 8940 of the side door support frame 89203 fix and seal the intelligent unit trolley 8960, and the middle support frame 89207 further improves the positioning and clamping of the intelligent unit trolley 8960, thereby improving stability.

[0033] Several grooves 892071 are evenly provided around the side door support frame 89203 and the middle support frame 89207. Fixing holes 892072 are provided on the bottom wall of the grooves 892071 for fixing the closed elastomer assembly 8940. At the same time, when the two side door support frames 89203 / middle support frames 89207 are arranged longitudinally adjacent to each other, the grooves 892071 provide clearance space to facilitate maintenance operations; at the same time, they also provide installation space for the inflation assembly.

[0034] In one specific embodiment, the closed elastomer assembly 8940 includes a closed elastomer and an inflation drive assembly; the closed elastomer is circumferentially fixed to the inner edge of the side door support frame 89203 or the central support frame 89207; the inflation drive assembly is located on the side door support frame 89203 or the central support frame 89207 and communicates with the closed elastomer for inflating the closed elastomer.

[0035] The enclosed elastomer is a rubber tube with a rectangular structure, designed according to the inner edge shape of the side door support frame 89203 and the central support frame 89207. It can be understood that the first and second electromagnets are positioned on the inner walls of the rubber tube, with a set of first and second electromagnets respectively positioned on the four sides of the rectangular structure. This accelerates the expulsion of gas from the rubber tube by compressing its inner wall, improving deflation efficiency. The inflation drive assembly can be an electric air pump or an automatic inflation system, powered by the vehicle's power supply, enabling remote control and automatic inflation. Preferably, a pressure sensor is installed within the enclosed elastomer to detect air pressure in real time and provide feedback to the control system.

[0036] In another embodiment, a heat tracing device, such as a resistance wire or other heat tracing element, is installed in the sealed elastic body for use in extremely cold regions (-40°C) to ensure the normal operation of the rubber hose under extreme temperature conditions. Accordingly, a temperature sensor is installed in the sealed elastic body to monitor changes in ambient temperature and prevent air pressure instability caused by temperature fluctuations. When the air pressure is lower than the set threshold or a leak is detected, the system will issue an alarm and automatically start the air replenishment program.

[0037] Preferably, shape memory metal can be incorporated into the enclosed elastomer to significantly enhance its functionality and adaptability. Shape memory metal is a material with unique properties that can recover its preset shape under specific temperature conditions. The shape memory metal can be pre-set in shape before inflation to ensure a tight fit against the outer edge of the intelligent unit vehicle 8960 after inflation, providing a better seal. When the temperature changes, the shape memory metal can automatically adjust its shape to compensate for dimensional changes caused by temperature, maintaining sealing performance. When the inflatable component is fully inflated, the shape memory metal can provide additional rigid support to prevent displacement or loosening caused by external impacts or vibrations.

[0038] The specific working process is as follows: When the intelligent unit trolley 8960 enters the vehicle body 8900 through the wide-opening doorway 89202, the intelligent unit trolley 8960 is guided into the designated position within the vehicle body 8900 via a track or guide system. At this time, the closed elastic body component 8940 located on the doorway or central support frame 89207 is in a deflated and contracted state, not interfering with the movement of the intelligent unit trolley 8960. After the intelligent unit trolley 8960 is in position, the sealing and fixing operation is initiated. The control system fills the closed elastic body with gas or liquid, causing the closed elastic body component 8940 to expand and fit tightly against the outer wall of the trolley. The end wall of the intelligent unit trolley 8960 and the wide-opening doorway 89202... The gate of the rail vehicle is formed, sealing the vehicle body 8900 to ensure the required air density during vehicle operation and to prevent dust, rain, or air pressure fluctuations from affecting equipment operation; it also prevents the intelligent unit trolley 8960 from sliding or tipping over during vehicle operation; during vehicle operation, the sealing elastomer assembly 8940 continuously provides clamping force and cushioning. When vibration or impact occurs, the sealing elastomer assembly absorbs energy to protect the intelligent unit trolley 8960; when the intelligent unit trolley 8960 needs to disembark, the control system vents, the sealing elastomer assembly 8940 returns to its original state, and the intelligent unit trolley 8960 can slide out freely to complete the task switching.

[0039] The aforementioned vehicle body 8900 achieves rapid fixation and sealing of the intelligent unit vehicle 8960 through the deformable closed elastomer component 8940, thereby improving safety. At the same time, the closed elastomer component 8940 is arranged around the side door or the central support frame 89207 to enhance the overall structural synergy. It is suitable for new application scenarios such as AGVs, intelligent lockers, and mobile medical equipment, and can be connected to the whole vehicle control system to realize one-click operation and status monitoring.

[0040] In another embodiment, in order to guide the intelligent unit vehicle 8960 to get on and off, the two bottom crossbeams 892061 located at both ends of the longitudinal direction within the side door support frame 89203 are reused as guide crossbeams to guide the intelligent unit vehicle 8960. The guide beam is provided with a deformable closed guide elastomer assembly 8950, which extends along the length of the guide beam. When the closed guide elastomer assembly 8950 is in a fully inflated state, it is used to guide the movement of the intelligent unit trolley 8960.

[0041] The bottom crossbeam 892061 has a hollow cavity, within which a closed guide elastomer assembly 8950 is housed. This assembly forms a flexible guide channel, facilitating the precise entry and exit of the intelligent unit vehicle 8960 in the doorway area. The closed guide elastomer assembly is a deformable flexible guide structure, made of materials such as rubber, TPU, or silicone. Its volume changes through inflation or liquid filling, thereby altering the depth of the guide path. Guide grooves are formed between the closed guide elastomer assembly 8950 and the side walls of the bottom crossbeam 892061, limiting the lateral deviation of the intelligent unit vehicle 8960 and ensuring its movement along the predetermined path. It is understood that the structure of the closed guide elastomer assembly 8950 can be designed with reference to the closed elastomer assembly 8940, thereby simplifying the manufacturing process.

[0042] The specific working process is as follows: The intelligent unit trolley 8960 enters the door area of ​​the car body 8900, and the closed guide elastomer assembly 8950 is inflated to facilitate the intelligent unit trolley 8960 getting on and off the train. When the intelligent unit trolley 8960 is in position, the closed guide elastomer assembly 8950 is in a retracted state. A guide groove is formed between the upper surface of the closed guide elastomer assembly 8950 and the two side walls of the bottom crossbeam 892061, which limits the lateral displacement of the intelligent unit trolley 8960. As a result, the intelligent unit trolley 8960 descends as a whole and contacts and is fixed to the limiting support structure located on the train floor. The bottom crossbeam 892061 simultaneously undertakes the functions of load-bearing and guidance, improving the structural utilization rate; intelligent guidance is achieved through the deformable elastomer assembly, improving operational stability.

[0043] like Figure 13-15 As shown, Figure 13 This is a cross-sectional structural diagram of the base frame provided in the embodiments of this application; Figure 14 A cross-sectional structural schematic diagram of the side beam of the underframe provided in an embodiment of this application; Figure 15 This is a bottom view of the base frame structure provided in the embodiments of this application.

[0044] In one optional embodiment, the chassis assembly 8930 provided in this application includes: Two side beams 89301 of the base frame are arranged in opposite directions along the transverse direction. The side beams 89301 are C-shaped beams. The open side of the C-shaped beam is provided with a side beam web 89306, which extends longitudinally. Several base frame beams 89302 are located transversely between two base frame side beams 89301 and extend longitudinally; Several crossbeams 89303 are located transversely between the base frame side beams 89301 and the base frame middle beams 89302, and between the two base frame middle beams 89302; the crossbeams 89303 extend into the C-shaped cavity of the C-shaped beam.

[0045] The side beams 89301 of the base frame are located on the left and right sides of the base frame assembly 8930, and are arranged opposite each other in the transverse direction. The side beams 89301 are C-shaped beams, and the transverse openings of the C-shaped beams are provided with side beam webs 89306 to improve the structural stiffness and torsional performance. The side beam webs 89306 extend longitudinally, and there are several side beam webs 89306, forming a continuous support structure. The central beam 89302 of the base frame is located between the two base frame side beams 89301, extends longitudinally, and serves as the central load-bearing structure; it bears the wheel pressure and concentrated load of the intelligent unit trolley. The crossbeam 89303 is arranged transversely, connecting the side beams 89301 and the middle beams 89302 of the base frame, as well as the two middle beams 89302 of the base frame. The end of the crossbeam 89303 is inserted into the C-shaped cavity of the C-shaped beam and contacts the inner wall of the C-shaped cavity to form a closed structure, thereby improving the connection strength. The C-shaped cavity, the end of the crossbeam 89303, and the web plate 89306 of the side beam form a closed structure, further improving the connection strength and facilitating the transmission and distribution of force, thus enhancing the overall structural stability. It can be understood that the middle beams 89302 of the base frame have different cross-sectional sizes to jointly bear the vertical concentrated load after the intelligent unit trolley is mounted.

[0046] The underframe assembly 8930 also includes a corrugated plate 89304 and a skirt 89305. The corrugated plate 89304 is located on the upper part of the underframe side beam 89301, the underframe middle beam 89302, and the cross beam 89303, providing lateral load, longitudinal load transfer, vertical load support, and bending stiffness support for the vehicle body. The skirt 89305 is located on the lower part of the underframe side beam 89301 of the underframe assembly 8930, providing vertical load and bending stiffness support for the vehicle body. The skirt 89305 has a fixed welded skirt 89305 to the underframe side beam 89301 and a movable skirt 89305. The movable skirt 89305 provides convenience for vehicle equipment maintenance, while the fixed skirt 89305 provides vertical load and stiffness.

[0047] This application also provides a rail vehicle, including the vehicle body 8900 described in any of the above embodiments.

[0048] This application also provides an intelligent freight system, characterized in that it includes an intelligent unit trolley 8960 and the rail vehicle described in the above embodiments.

[0049] In one optional embodiment, the intelligent unit trolley 8960 has docking grooves 89601 at both ends and the middle section of its longitudinal direction, which cooperate with the closed guide elastomer assembly 8950 or closed elastomer assembly 8940 of the rail vehicle.

[0050] 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.

[0051] 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 vehicle body, characterized in that, It includes a roof assembly, a middle frame assembly, and a chassis assembly, wherein the middle frame assembly is located between the roof assembly and the chassis assembly; the middle frame assembly includes: Two side walls are spaced apart laterally, and the two side walls are provided with several large-opening doorways facing each other longitudinally, and the large-opening doorways are provided with side door support frames; A top mounting frame is fixed to the top of the side wall. The top mounting frame includes several top beams, which are located at both ends of the wide-opening doorway and are arranged laterally. The partition wall frame is located below the top beam and is fixed to the top beam, the side door support frame, and the base frame. The bottom crossbeam consists of several bottom crossbeams arranged in a transverse direction, and the bottom crossbeams are fixed to the side door support frame; Several central support frames are located laterally in the middle of the vehicle body, and the central support frames are arranged in a one-to-one correspondence with the side door support frames; The central support frame is fixedly connected to the top crossbeam, the partition wall frame, and the bottom crossbeam.

2. The vehicle body according to claim 1, characterized in that, The partition wall frame assembly is located laterally between the side door support frame and the central support frame; the partition wall frame assembly is fixed to the central support frame.

3. The vehicle body according to claim 2, characterized in that, The partition wall frame comprises: A rectangular frame and a star-shaped frame located within the rectangular frame, wherein each vertex of the star-shaped frame is fixed to the rectangular frame.

4. The vehicle body according to claim 1, characterized in that, The top mounting frame also includes two top longitudinal beams arranged laterally opposite each other, the top longitudinal beams being located at the top of the side wall on the corresponding side; Both ends of any of the top crossbeams are fixedly connected to the two top longitudinal beams respectively.

5. The vehicle body according to claim 1, characterized in that, One end of the bottom crossbeam is fixed to the side door support frame, and the other end is fixed to the middle support frame.

6. The vehicle body according to claim 1, characterized in that, Also includes: A deformable closed elastomer assembly is provided, which is arranged circumferentially along the side door support frame or the central support frame. When the closed elastomer assembly is in a fully inflated state, it is used to seal and fix the outer edge of the intelligent unit vehicle and the vehicle body.

7. The vehicle body according to claim 6, characterized in that, The closed elastomer assembly includes: A closed elastic body is fixed around the inner circumferential edge of the side door support frame or the central support frame; An inflation drive assembly is located on the side door support frame or the middle support frame and is in communication with the closed elastomer, for inflating the closed elastomer.

8. The vehicle body according to claim 7, characterized in that, The closed elastomer assembly further includes: The first electromagnet and the second electromagnet are located on opposite inner walls of the closed elastic body, respectively. An electromagnetic control component is connected to the first electromagnet and the second electromagnet respectively, and is used to energize the first electromagnet and the second electromagnet so that the first electromagnet and the second electromagnet attract each other.

9. The vehicle body according to claim 1, characterized in that, The two bottom crossbeams located at both ends of the longitudinal direction within the side door support frame are reused as guide crossbeams to guide the intelligent unit vehicle. The guide beam is provided with a deformable closed guide elastomer assembly, which extends along the length of the guide beam. When the closed guide elastomer assembly is in a fully inflated state, it is used to guide the movement of the intelligent unit vehicle.

10. The vehicle body according to claim 1, characterized in that, The base frame comprises: Two side beams of the base frame are arranged laterally opposite each other. The side beams are C-shaped beams. The open side of the C-shaped beam is provided with a side beam web, and the side beam web extends longitudinally. Several base frame middle beams are located transversely between two base frame side beams and extend longitudinally; Several crossbeams are located laterally between the side beams of the base frame and the middle beam of the base frame, and between the two middle beams of the base frame; the crossbeams extend into the C-shaped cavity of the C-shaped beam.

11. A rail vehicle, characterized in that, Includes the vehicle body as described in any one of claims 1-10.

12. An intelligent freight system, characterized in that, Includes intelligent unit vehicles and the rail vehicle as described in claim 11.

13. The intelligent freight system according to claim 12, characterized in that, The intelligent unit trolley has docking grooves at both ends and the middle section, which cooperate with the closed guide elastomer assembly or closed elastomer assembly of the rail vehicle.

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