Railway vehicles, integrated underfloor equipment and their bridge covers

Abstract

We provide an integrated underfloor equipment system that is low in redundancy, lightweight, highly efficient in terms of space utilization, and easy to inspect. [Solution] Disclosed are a railway vehicle, an integrated underfloor equipment system and a bridge cover thereof, the integrated underfloor equipment system being attached to the body system of the railway vehicle, the body system including a frame and having an outer contour surface of the body, and the integrated underfloor equipment system including a functional device connected to the frame and having a first outer contour surface and an equipment housing including a first inspection door, and a functional device mounted inside the equipment housing, and a bridge cover located on one or both longitudinal sides of the functional device and connected to the equipment housing and having a second outer contour surface, the bridge cover having a first outer contour surface and a second outer contour surface that combine with the outer contour surface of the body to form the outer contour of the railway vehicle.

Description

Technical Field

[0001] This application claims the priority of two Chinese patent applications, one filed with the China National Intellectual Property Administration on June 30, 2023, with the application number 202310800954X and the invention title "Bridge Cover Applied to Integrated Underfloor Equipment System", and the other filed with the China National Intellectual Property Administration on the same day, with the application number 2023108057365 and the invention title "Integrated Underfloor Equipment System and Railway Vehicle", and all of its content is incorporated herein by reference.

[0002] This application relates to the technical field of railway vehicles, specifically to railway vehicles, integrated underfloor equipment and its bridge cover.

Background Art

[0003] A railway vehicle includes a car body system and an underfloor equipment system. The car body system includes a frame for forming the upper structure of the railway vehicle, the vehicle, etc.

[0004] Referring to FIG. 1, FIG. 1 is a structural schematic diagram of a specific embodiment of the underfloor equipment system of a railway vehicle in the related art.

[0005] As shown in FIG. 1, in the related art, the underfloor equipment system 01 includes functional equipment 011 and an equipment cabin 012. The functional equipment 011 is each accessory equipment installed below the frame 02, such as a converter, an air conditioning unit, etc. Each of these functional equipment 011 has an equipment housing 011a disposed thereon, and the equipment housing 011a is fixed to the frame 02 for installation, realizing the installation and fixation of each functional equipment 011 in the car body system. The equipment cabin 012 is also fixed to the frame 02 for installation, covering each functional equipment 011 and further protecting each functional equipment 011. The outer wall surface of the equipment cabin 012 has a shape matching design, thereby improving the smoothness of the lower contour of the railway vehicle and further reducing air resistance.

[0006] The equipment cabin 012 is provided with a cabin door 012a, and the equipment housing 011a is also provided with an access door 011b. When performing inspection work on the functional equipment 011, the worker opens the cabin door 012a and the access door 011b in order before performing the inspection work on the corresponding functional equipment 011. [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] This application aims to provide a railway vehicle, an integrated underfloor equipment system, and its bridge cover. The integrated underfloor equipment system has low redundancy, is lightweight, has high space utilization, and is convenient for inspection. The bridge cover is located on one or both sides of the functional equipment in the integrated underfloor equipment system in the longitudinal direction, covering the area under the floor where functional equipment is not located. The bridge cover comprises a second outer contour surface, which can directly participate in the formation of the underfloor outer contour surface. [Means for solving the problem]

[0008] According to a first aspect, the present application provides an integrated underfloor equipment system to be attached to a vehicle body system of a railway vehicle, the vehicle body system including a frame and having an outer contour surface, the integrated underfloor equipment system comprising a functional equipment comprising an equipment housing and a functional device mounted within the equipment housing, the equipment housing being connected to the frame and having a first outer contour surface and including a first inspection door, and a bridge cover located on one or both longitudinal sides of the functional equipment and connected to the equipment housing, having a second outer contour surface, the bridge cover being such that the first and second outer contour surfaces combine with the outer contour surface of the vehicle to form the outer contour of the railway vehicle.

[0009] The integrated underfloor equipment system provided in this application integrates functional equipment and equipment cabins in related technologies, and performs shape-matching design for the equipment housing of the functional equipment so that the equipment housing of the functional equipment has a first outer contour surface, and a bridge cover is provided on one or both longitudinal sides of the functional equipment to cover areas under the floor where functional equipment is not located, and shape-matching design may also be performed for the outer wall surface of the bridge cover, so that the bridge cover has a second outer contour surface, and the first outer contour surface and the second outer contour surface are combined with the outer contour surface of the vehicle body to form the outer contour of the railway vehicle.

[0010] By arranging the components in this way, the equipment cabin in related technologies is omitted, the number of components is reduced, the redundancy of the underfloor equipment system is reduced, the usable space under the floor is expanded, the installation and placement of functional devices is facilitated, and the weight of the railway vehicle is reduced, meeting the design requirements for overall vehicle weight reduction.

[0011] When performing inspection work, workers can inspect the relevant functional devices simply by opening the equipment housing, increasing inspection efficiency. Furthermore, because only the equipment housing is present, workers can access the relevant functional devices without having to enter deep into the underfloor equipment system, expanding the inspection space and improving the convenience of inspection.

[0012] Preferably, the first inspection door has an up-swing structure or a down-drop structure.

[0013] Preferably, the first inspection door is located on the lateral side of the equipment housing and is rotatably positioned.

[0014] Preferably, the equipment housing includes a frame and a first bottom plate, the frame includes two lateral frames arranged opposite each other laterally, the first bottom plate is connected to the two lateral frames and the first bottom plate and the lateral frames surround each other to form an inspection opening, and the first inspection door can close the inspection opening.

[0015] Preferably, the system further includes a first sealing member positioned to surround the inspection opening, the first sealing member being attached to the first inspection door.

[0016] Preferably, the framework further includes a top frame and two vertical frames arranged opposite each other in the vertical direction, the two horizontal frames and the two vertical frames all connected to the top frame and all connected to the first bottom plate.

[0017] Preferably, the equipment housing includes a first bottom plate, and the first inspection door is provided on the first bottom plate.

[0018] Preferably, the first bottom plate is provided with an inspection opening, a slide guide portion and a groove, and the first inspection door is provided with a sliding member that can slide along the slide guide portion and adjust the relative position between the first inspection door and the first bottom plate, and when the sliding member slides into the groove, the first inspection door closes the inspection opening.

[0019] Preferably, the frame includes a connecting member and two frame side sills arranged opposite each other laterally, the connecting member connecting the two frame side sills, and the functional equipment has a plurality of connecting bases, at least a portion of each connecting base being connected to the connecting member.

[0020] Preferably, a first locking member is provided on the first inspection door, and a first latching member is further provided on the equipment housing, and the first locking member and the first latching member cooperate to enable locking or unlocking of the first inspection door.

[0021] Preferably, the first latching member is a latching hole provided in the equipment housing.

[0022] Preferably, the base frame includes a connecting member and two base frame side sills disposed opposite to each other in the lateral direction, the connecting member connects the two base frame side sills, and the first inspection door can contact the base frame side sill in the closed state.

[0023] Preferably, a second sealing member is disposed on the first inspection door, and the first inspection door contacts the base frame side sill by the second sealing member.

[0024] Preferably, a first ventilation opening is disposed on the first inspection door, and a first filter member is further disposed in the first ventilation opening.

[0025] Preferably, a first cavity is formed between the equipment housing and the base frame, the equipment housing includes an inner chamber and a transition chamber, the functional device is mounted in the inner chamber, a first opening for communicating the transition chamber and the first cavity is provided at the top of the equipment housing, the inner chamber and the transition chamber are partitioned by a partition plate, a second ventilation opening is provided on the partition plate, a second filter member is further disposed in the second ventilation opening, and the first ventilation opening communicates with the transition chamber.

[0026] Preferably, a second cavity is formed in the bridge cover, a second opening for communicating the transition chamber and the second cavity is further provided on the longitudinal side of the equipment housing, and the second cavity communicates with the first cavity.

[0027] Preferably, the number of the functional devices is plural, each of the functional devices is arranged at intervals along the longitudinal direction, and a bridge cover is provided between two adjacent functional devices.

[0028] Preferably, the bridge cover includes a bottom part and two side parts, the two side parts are arranged at intervals in the lateral direction, and at least one of the side part and the bottom part is connected to the equipment housing.

[0029] Preferably, a mounting interface extending along the horizontal direction is provided on the vertical side portion of the device housing, and the bottom component is mounted on the device housing by the mounting interface.

[0030] Preferably, the bottom component includes a slide rail fixed and attached to the vertical side portion of the device housing, and a second bottom plate slidably mounted on the slide rail.

[0031] Preferably, the second bottom plate includes a plurality of partition plates arranged in the horizontal direction, a third sealing member is provided between two adjacent partition plates, and the two adjacent partition plates are in contact with each other by the third sealing member.

[0032] Preferably, the bottom component is located on one horizontal side of the slide rail and further includes a lower side sill connected to the slide rail.

[0033] Preferably, it further includes an adapter plate, the adapter plate includes a first plate portion and a second plate portion arranged to form an included angle, the first plate portion is connected to the slide rail, and the second plate portion is connected to the lower side sill.

[0034] Preferably, the lower side sill and the second plate portion are connected by a connection bolt, and a rotation prevention member capable of restricting the rotation of the connection bolt is further arranged on the lower side sill.

[0035] Preferably, it further includes a fourth sealing member for sealing the gap between the lower side sill and the second bottom plate.

[0036] Preferably, it further includes a second locking member capable of locking the second bottom plate to the lower side sill.

[0037] Preferably, the second locking member includes a locking pin and a locking cylinder seat, the locking cylinder seat being fixedly mounted to the second bottom plate, the locking pin being mounted within the locking cylinder seat and displaceable relative to the locking cylinder seat, and / or the second locking member includes a locking bolt having a locking hole extending radially in the head, a fixedly positioned locking block, and a locking rope that is insertable through the locking hole and connectable to the locking block.

[0038] Preferably, the system further includes a compression member that tightens the second bottom plate in the vertical direction.

[0039] Preferably, the crimping member includes a press roller attached to the slide rail, the second bottom plate is provided with a projection, and the press roller is in contact with the projection in the vertical direction.

[0040] Preferably, the side component is rotatably mounted on the bottom component or on the frame.

[0041] Preferably, the system further includes a fifth sealing member that provides a seal between the side component and the bottom component, between the side component and the equipment housing, and between the side component and the frame.

[0042] Preferably, a second locking member is provided on the side component, and a second latching member is provided on the frame, and the second locking member and the second latching member cooperate to enable locking or unlocking of the side component.

[0043] Preferably, a second inspection door is provided in the bottom component.

[0044] According to a second aspect, the present application further provides a railway vehicle comprising a body system and an underfloor equipment system, wherein the underfloor equipment system is the integrated underfloor equipment system described above.

[0045] Since the above-mentioned integrated underfloor equipment system already possesses the aforementioned technological benefits, railway vehicles equipped with this integrated underfloor equipment system should also possess similar technological benefits, and therefore no further explanation is provided here.

[0046] According to a third aspect, the present application provides a bridge cover applicable to an integrated underfloor equipment system, the integrated underfloor equipment system includes functional equipment, the functional equipment includes equipment housing, the equipment housing has a first outer contour surface, the bridge cover is located longitudinally on one or both sides of the functional equipment and has a second outer contour surface, the first and second outer contour surfaces are combined to form an underfloor outer contour surface of a railway vehicle, the bridge cover includes a bottom component and two side components, the two side components are spaced apart laterally, and at least one of the side components and the bottom component is connected to the equipment housing.

[0047] The integrated underfloor equipment system is a novel underfloor equipment system that specifically integrates functional equipment and equipment cabins in related technologies. By performing shape-matching design with respect to the equipment housing of the functional equipment, the equipment housing of the functional equipment has a first outer contour surface, which can directly participate in the formation of the underfloor outer contour surface. This eliminates the need for equipment cabins in related technologies, reduces redundancy in the underfloor equipment system, improves the utilization rate of underfloor space, and also achieves overall vehicle weight reduction, making inspections easier.

[0048] The bridge cover provided in this application is located on one or both sides in the longitudinal direction of functional equipment and covers an area under the floor where functional equipment is not located. The outer wall surface of the bridge cover may also be designed to conform to the shape, thereby providing the bridge cover with a second outer contour surface, and the first outer contour surface and the second outer contour surface are combined to form an underfloor outer contour surface, thereby improving the smoothness during the operation of the railway vehicle and further reducing the operating resistance during the operation of the railway vehicle.

[0049] Preferably, the bottom component includes a slide rail fixed to the longitudinal side of the equipment housing and a second bottom plate slidably mounted on the slide rail.

[0050] Preferably, the second bottom plate includes a plurality of partition plates arranged laterally, a third sealing member is provided between two adjacent partition plates, and the two adjacent partition plates are in contact with each other by the third sealing member.

[0051] Preferably, the bottom component further includes a lower side sill located on one lateral side of the slide rail and connected to the slide rail.

[0052] Preferably, the adapter plate further includes an adapter plate comprising a first plate portion and a second plate portion arranged to form an angle, the first plate portion being connected to the slide rail and the second plate portion being connected to the lower side sill.

[0053] Preferably, the lower side sill and the second plate portion are connected by connecting bolts, and the lower side sill is further provided with a rotation prevention member capable of restricting the rotation of the connecting bolts.

[0054] Preferably, the system further includes a fourth sealing member that seals the gap between the lower side sill and the second bottom plate.

[0055] Preferably, the system further includes a second locking member capable of locking the second bottom plate to the lower side sill.

[0056] Preferably, the second locking member includes a locking pin and a locking cylinder seat, the locking cylinder seat being fixedly mounted to the second bottom plate, the locking pin being mounted within the locking cylinder seat and displaceable relative to the locking cylinder seat, and / or the second locking member includes a locking bolt having a locking hole extending radially in its head, a fixedly positioned locking block, and a locking rope that is insertable through the locking hole and connectable to the locking block.

[0057] Preferably, the system further includes a compression member that tightens the second bottom plate in the vertical direction.

[0058] Preferably, the crimping member includes a press roller attached to the slide rail, the second bottom plate is provided with a projection, and the press roller is in contact with the projection in the vertical direction.

[0059] Preferably, the side component is rotatably mounted on the bottom component, or rotatably mounted on the underframe of a railway vehicle.

[0060] Preferably, the system further includes a fifth sealing member that provides a seal between the side component and the bottom component, between the side component and the equipment housing, and between the side component and the frame.

[0061] Preferably, a second locking member is provided on the side component, and a second latching member is provided on the frame, and the second locking member and the second latching member cooperate to enable locking or unlocking of the side component. [Brief explanation of the drawing]

[0062] [Figure 1] This is a schematic diagram illustrating a specific embodiment of an underfloor equipment system for railway vehicles in relation to related technologies. [Figure 2] This is a simplified cross-sectional view of a railway vehicle provided in this application. [Figure 3]This is a local structural diagram of the integrated underfloor equipment system provided in this application. [Figure 4] This is a diagram showing the connection structure of the frame, the first base plate, and the first inspection door. [Figure 5] Figure 4 is a schematic diagram of the framework structure. [Figure 6] This is a localized enlarged view of region A in Figure 5. [Figure 7] Figure 4 is a schematic diagram of the structure of the first base plate. [Figure 8] Figure 7 is a cross-sectional view in the BB direction. [Figure 9] Figure 7 is a cross-sectional view in the CC direction. [Figure 10] Figure 4 is a schematic diagram of the structure of the first inspection door. [Figure 11] This is a schematic diagram of the structure of the first bottom plate where the first inspection doors are located. [Figure 12] Figure 11 is a schematic diagram of the structure of the first inspection door. [Figure 13] Figure 11 is a schematic diagram of the slide guide section. [Figure 14] This is a diagram showing the relative positions of the underfloor equipment system and the underframe. [Figure 15] This is a localized magnified view of region D in Figure 14. [Figure 16] Figure 15 is a schematic diagram of the structure of the deformed solution. [Figure 17] This is a schematic diagram of the structure of an air intake solution for functional equipment. [Figure 18] This is a schematic diagram of the structure of other air intake solutions for functional equipment. [Figure 19] This is a schematic diagram of the structure of a specific embodiment of the bridge cover. [Figure 20] Figure 19 shows the connection structure between the bottom component and the first bottom plate. [Figure 21] Figure 20 is a schematic diagram of the structure of the deformed solution. [Figure 22] Figure 19 is a cross-sectional view. [Figure 23] This is a localized enlarged view of region E in Figure 22. [Figure 24] This is a localized enlarged view of region F in Figure 22. [Figure 25] This is a diagram illustrating the connection structure between the slide rail and the lower side sill. [Figure 26] This is a diagram showing the connection structure between the adapter plate and the rotation prevention member. [Figure 27] This is a schematic diagram of the structure of a specific embodiment of the second locking member. [Figure 28] Figure 27 is a schematic diagram illustrating the structure in which the second locking member connects the second bottom plate and the lower side sill. [Figure 29] This is a schematic diagram of the structure of another specific embodiment of the second locking member. [Figure 30] Figure 29 is a schematic diagram illustrating the structure in which the second locking member connects the second bottom plate and the lower side sill. [Modes for carrying out the invention]

[0063] To help those skilled in the art better understand the technical solutions of this application, the application will be described in more detail below, combining the drawings and specific embodiments.

[0064] In the embodiments of this application, terms such as “First,” “Second,” “Third,” “Fourth,” and “Fifth” are not intended to indicate or imply relative importance, nor to implicitly indicate the number of technical features being referred to, but are merely for descriptive purposes. Thereafter, features referred to as “First,” “Second,” “Third,” “Fourth,” and “Fifth” explicitly or implicitly include one or more such features.

[0065] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, terms such as “attachment,” “connection,” and “connection” should be understood in a broad sense. For example, “connection” may be a removable connection or a non-removable connection, a direct connection or an indirect connection via an intermediate medium.

[0066] The directional terms used in the embodiments of this application, such as "vertical direction," "horizontal direction," "perpendicular direction," "inside," and "outside," all refer to directions and positional relationships limited to the railway vehicle. The "vertical direction" is both the direction of operation of the railway vehicle and the length direction of the railway vehicle; the "horizontal direction" is the width direction of the railway vehicle; the "horizontal direction" and the "vertical direction" are perpendicular; and the "perpendicular direction" is both the height direction of the railway vehicle and the up and down direction.

[0067] In the descriptions of the embodiments of this application, unless otherwise specified, "multiple" in this application refers to two or more. When "multiple" indicates the number of several components, it does not indicate the quantitative relationship between these components.

[0068] In the descriptions of embodiments of this application, the terms “includes,” “incorporates,” or any other variation thereof are intended to include non-exclusive inclusion, thereby including not only those elements but also other elements not explicitly listed, or even elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the elements limited by the phrase “includes XX” do not preclude the process, method, article, or apparatus containing such elements from having other identical elements.

[0069] In the embodiments of this application, "and / or" simply describes the relationship between related objects and indicates that three relationships exist. For example, A and / or B indicates three situations: A existing individually, A and B existing simultaneously, and B existing individually. Also, in this specification, the symbol " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0070] Refer to Figure 2, which is a simplified lateral cross-sectional view of the railway vehicle provided in this application.

[0071] As shown in Figure 2, this application provides a railway vehicle, comprising a car body system 1 and an underfloor equipment system 2.

[0072] The car body system 1 includes a frame and vehicle to form the superstructure of the railway vehicle, and the car body system 1 has an outer contour surface 1a (thick line in the drawing). The underfloor equipment system 2 is located below the car body system 1 and houses the functional equipment of the railway vehicle, such as a converter, air conditioning unit, underfloor water tank, waste tank, battery box, etc., and the underfloor equipment system 2 has an underfloor outer contour surface 2a (thick line in the drawing).

[0073] The outer contour surface 1a of the car body and the outer contour surface 2a of the undercarriage are designed to be combined to form the outer contour of the railway vehicle. In practical terms, by employing a shape-matching design for both the outer contour surface 1a of the car body and the outer contour surface 2a of the undercarriage, the outer contour of the railway vehicle is optimized to improve the smoothness of the railway vehicle during operation and further reduce air resistance during operation.

[0074] Herein, the embodiments of this application do not limit the specific shapes of the outer contour surface 1a of the vehicle body and the outer contour surface 2a of the underbody, and in actual application, those skilled in the art may determine them by combining actual needs and certain simulation tests. Generally, the outer contour surface 1a of the vehicle body and the outer contour surface 2a of the underbody are designed to be as streamlined as possible while meeting requirements such as height and width limitations, thereby significantly reducing the operating resistance and wear of the railway vehicle.

[0075] As described in the background technology section, in the related technology, the underfloor equipment system includes functional equipment and an equipment cabin, the functional equipment has a separate equipment housing, the equipment cabin covers and shields the functional equipment, and the outer wall surface of the equipment cabin forms the underfloor outer contour surface.

[0076] In such a solution, the underfloor equipment system 2 actually has two layers of housing, an equipment cabin and an equipment housing, and there is a certain degree of redundancy in the structure. When inspecting the functional devices within the functional equipment, the equipment cabin and equipment housing must be opened sequentially, which is detrimental to improving inspection efficiency. Furthermore, considering factors such as the requirement for opening and closing the inspection door provided in the equipment housing, there is wasted space in both the vertical and lateral directions in the equipment cabin and functional equipment, resulting in a low utilization rate of the underfloor space.

[0077] In contrast, the embodiment of the present application further provides an integrated underfloor equipment system, integrating functional equipment and equipment cabins, and performing shape-matching design with respect to the equipment housing of the functional equipment so that the equipment housing of the functional equipment can directly participate in the formation of the underfloor outer contour surface 2a. A bridge cover is provided on one or both longitudinal sides of the functional equipment to cover areas under the floor where functional equipment is not located, and shape-matching design may also be performed on the outer wall surface of the bridge cover so that the bridge cover can also directly participate in the formation of the underfloor outer contour surface 2a.

[0078] By using this solution, the equipment cabin in related technologies can be omitted, reducing the number of components and lowering the redundancy of the underfloor equipment system 2. After verification with specific vehicle types, using the solution in the embodiment of this application, the reduction in the number of underfloor components reaches 15%, significantly reducing the number of components. Furthermore, the reduction in the number of underfloor components expands the usable space under the floor, facilitating the installation and placement of functional devices. In addition, it reduces the weight of the railway vehicle, meeting the design requirements for overall vehicle weight reduction.

[0079] When performing inspection work, workers can inspect the relevant functional devices by opening only the equipment housing, thus increasing inspection efficiency. Furthermore, because only the equipment housing is present, workers can access the relevant functional devices without having to enter deep into the underfloor equipment system, expanding the inspection space and improving the convenience of inspection.

[0080] Referring to Figures 3 to 18, Figure 3 is a local structural diagram of the integrated underfloor equipment system provided in this application, Figure 4 is a structural diagram of the connection between the frame, the first bottom plate and the first inspection door, Figure 5 is a schematic structural diagram of the frame in Figure 4, Figure 6 is a local enlarged view of area A in Figure 5, Figure 7 is a schematic structural diagram of the first bottom plate in Figure 4, Figure 8 is a cross-sectional view of Figure 7 in the BB direction, Figure 9 is a cross-sectional view of Figure 7 in the CC direction, Figure 10 is a schematic structural diagram of the first inspection door in Figure 4, and Figure 11 is the first point Figure 12 is a schematic diagram of the structure of the first bottom plate where the inspection doors are located, Figure 13 is a schematic diagram of the structure of the slide guide section of Figure 11, Figure 14 is a diagram showing the relative position of the underfloor equipment system and the frame, Figure 15 is a localized enlarged view of area D in Figure 14, Figure 16 is a schematic diagram of a modified example of Figure 15, Figure 17 is a schematic diagram of the structure of the air intake means of the functional equipment, and Figure 18 is a schematic diagram of the structure of other air intake means of the functional equipment.

[0081] As shown in Figure 3, the integrated underfloor equipment system provided in this application includes a functional equipment 21 and a bridge cover 22. The functional equipment 21 includes an equipment housing 211 and a functional device, the functional device being mounted within the equipment housing 211, the type of functional device relating to, and not limited to, the type of functional equipment 21, and the equipment housing 211 being further connected to the frame 11 to enable mounting and securing of the functional equipment 21 at the bottom of the vehicle body system 1. The bridge cover 22 is located on one or both sides of the functional equipment 21 in the longitudinal direction, is connectable to the functional equipment 21, and covers the area below the railway vehicle where the functional equipment 21 is not located.

[0082] The equipment housing 211 has a first outer contour surface 2a-1, and the bridge cover 22 has a second outer contour surface 2a-, and the first outer contour surface 2a-1 and the second outer contour surface 2a-2 together form the underfloor outer contour surface 2a.

[0083] Herein, the embodiments of this application do not limit the number of functional devices 21, and in actual application, those skilled in the art may determine the number by combining the type of railway vehicle, etc. For example, the number of functional devices 21 may be one, or there may be multiple functional devices 21, in which case each functional device 21 is arranged with a gap in the vertical direction, and a bridge cover 22 is placed between two adjacent functional devices 21.

[0084] Furthermore, the embodiments of this application do not limit the placement position of the functional equipment 21, and in actual application, those skilled in the art may determine the specific related functions of the functional equipment 21 by combining them. For example, the functional equipment 21 may be located at the longitudinal end of the underfloor equipment system 2, in which case the first outer contour surface 2a-1 further participates in forming the end contour of the underfloor equipment system 2, or the functional equipment 21 may be positioned away from the longitudinal end, in which case the bridge cover 22 forms the longitudinal end of the underfloor equipment system 2 and participates in forming the end contour of the underfloor equipment system 2 from the second outer contour surface 2a-2.

[0085] A localized area of ​​the equipment housing 211 forms a first inspection door 211a, and the outer wall surface of the first inspection door 211a constitutes a part of the first outer contour surface 2a-1.

[0086] The first inspection door 211a has both an open and a closed position. When open, the functional device is directly exposed, allowing workers to easily inspect and maintain the functional device within the equipment housing 211. When closed, the first inspection door 211a isolates the functional device from the external environment, protecting the functional device.

[0087] In some embodiments, the first inspection door 211a is located on the lateral side of the equipment housing 211.

[0088] The first inspection door 211a is attached and secured by removable connecting members such as screws. Thus, when switching to the open state of the first inspection door 211a, the removable connecting members are removed, the entire first inspection door 211a is removed and placed on the ground or another operating surface, and when switching to the closed state of the first inspection door 211a, the first inspection door 211a is attached using the removable connecting members.

[0089] Alternatively, the first inspection door 211a may be rotatably positioned. In this embodiment, the first inspection door 211a may always be located in the underfloor equipment system 2, and when switching between the open and closed states, there is no need to attach or detach the entire first inspection door 211a, improving inspection efficiency. Also, when switching to the open state, the first inspection door 211a does not need to "fall," reducing the space occupied by related components during inspection work and improving the convenience of inspection work.

[0090] The equipment housing 211 includes a frame 211b. The frame 211b is specifically a frame-type structure composed of multiple beam bodies, which meets the strength requirements of the equipment housing 211, and the functional devices are directly attached to the frame 211b.

[0091] There is a variety of structural configurations for the equipment housing 211, which are specifically determined by combining the actual usage needs. In the embodiments shown in the drawings, as shown in Figures 4 and 5, the frame 211b includes two lateral frames 211b-1, a top frame 211b-2, and two vertical frames 211b-3, where the two lateral frames 211b-1 are arranged opposite each other in the lateral direction, and the two vertical frames 211b-3 are arranged opposite each other in the vertical direction, with the top portions of both the two lateral frames 211b-1 and the top portions of the two vertical frames 211b-3 all connected to the top frame 211b-2.

[0092] The equipment housing 211 further includes a first bottom plate 211c, which is fixed and mounted to the lower ends of two lateral frames 211b-1 and two longitudinal frames 211b-3, thereby providing shielding on the underside of the functional equipment 21. Herein, in some other embodiments, the frame 211b may include a bottom frame, which is connected to the two lateral frames 211b-1 and two longitudinal frames 211b-3, and the first bottom plate 211c may be attached to the bottom frame. Of course, in the embodiments of this application, the former solution, i.e., the solution that omits the bottom frame, is preferred as it is advantageous for reducing the overall weight of the vehicle.

[0093] After the installation of the first bottom plate 211c is completed, the first bottom plate 211c and the side frame 211b-1 form an inspection opening 211d, and a worker can perform inspection work on the functional device through the inspection opening 211d, and the first inspection door 211a can specifically close and open the inspection opening 211d.

[0094] The vertical size of the first inspection door 211a may basically match that of the functional equipment 21, in which case the inspection opening 211d of the functional equipment 21 may be designed to be large, and its inspection area may be large. Alternatively, the first inspection door 211a may be distributed only to a localized area in the vertical direction of the functional equipment 21.

[0095] As shown in Figure 4, the lateral frame 211b-1 includes an upper side sill 211b-1a and two transition side sills 211b-1b that are spaced apart in the vertical direction, with both ends of the transition side sills 211b-1b connected to the upper side sill 211b-1a and the first bottom plate 211c, respectively. The inspection opening 211d is specifically formed to be surrounded by the upper side sill 211b-1a, the first bottom plate 211c and the two transition side sills 211b-1b, and in the embodiment of Figure 4, the inspection opening 211d is substantially rectangular, while in some other embodiments, the inspection opening 211d may be trapezoidal or have other structural shapes.

[0096] The first inspection door 211a is rotatably connected to the first bottom plate 211c, forming a drop-down structure, and the first inspection door 211a rotates downward so that it can be switched to an open state; refer to Figure 4 for such an embodiment. Alternatively, the first inspection door 211a may have an up-swing structure, in which case the first inspection door 211a is rotatably connected to the upper side sill 211b-1a or another position on the upper part of the equipment housing 211, and the first inspection door 211a rotates upward so that it can be switched to an open state; refer to Figure 16 for such an embodiment.

[0097] Combining Figures 7 to 9, the first base plate 211c includes a bottom wall 211c-1, two lateral side walls 211c-2, and two vertical side walls 211c-3. The two lateral side walls 211c-2 are spaced apart in the lateral direction, and the inner wall surfaces of the two lateral side walls 211c-2 are connected to two lateral frames 211b-1. The two vertical side walls 211c-3 are spaced apart in the vertical direction, and the inner wall surfaces of the two vertical side walls 211c-3 are connected to two vertical frames 211b-3.

[0098] A first hinge connecting cylinder 211c-2b is formed on the outer wall surface of the side wall 211c-2. Connecting Figure 10, a second hinge connecting cylinder 211a-5 is formed on the inner wall surface of the first inspection door 211a. When specifically installed, a hinge shaft is further positioned, and the hinge shaft passes through the first hinge connecting cylinder 211c-2b and the second hinge connecting cylinder 211a-5, and further realizes a rotatable connection between the first inspection door 211a and the first bottom plate 211c.

[0099] In fact, the specific implementation of the rotatable connection can be diverse, as long as it satisfies the requirements for use. For example, one of the first inspection door 211a and the first bottom plate 211c may be provided with an arc-shaped plate and the other with a hinge shaft, and the rotatable arrangement of the first inspection door 211a can be achieved in the same way by the engagement of the hinge shaft and the arc-shaped plate, or the rotatable arrangement of the first inspection door 211a may be achieved by providing a structure such as a hinge.

[0100] As shown in Figure 10, the first inspection door 211a is provided with a first sealing member 211a-1, which is positioned to surround the inspection opening 211d. When the first inspection door 211a is closed, the first inspection door 211a contacts the frame 211b and the first bottom plate 211c via the first sealing member 211a-1. The first sealing member 211a-1 absorbs the manufacturing tolerances between the first inspection door 211a, the frame 211b, and the first bottom plate 211c, effectively eliminating the gap between the first inspection door 211a, the frame 211b, and the first bottom plate 211c, and further improving the sealing performance of the equipment housing 211 at the first inspection door 211a.

[0101] By combining Figures 6 and 8, a first housing groove 211b-5 is provided in the upper side sill 211b-1a and the transition side sill 211b-1b, and a second housing groove 211c-2a is provided in the lateral side wall 211c-2 of the first bottom plate 211c. When the first inspection door 211a is closed, the first sealing member 211a-1 is fitted into the first housing groove 211b-5 and the second housing groove 211c-2a, thereby reducing the lateral size of the equipment housing 211 when the first inspection door 211a is closed. The first housing groove 211b-5 and the second housing groove 211c-2a further limit the deformation range of the first sealing member 211a-1, reducing the possibility of the first sealing member 211a-1 falling out of the first inspection door 211a.

[0102] A first locking member 211a-2 is further positioned on the first inspection door 211a, and a first latching member is further positioned on the equipment housing 211. The first locking member 211a-2 and the first latching member work together to lock or unlock the first inspection door 211a.

[0103] Using this solution, the first inspection door 211a does not need to cooperate with the vehicle body system 1 to achieve locking, improving the structural independence of the underfloor equipment system 2, eliminating the fit tolerance between the first locking member 211a-2 and the first latching member, and further facilitating the butt joint and installation of the underfloor equipment system 2 and the vehicle body system 1.

[0104] The specific structural form and number of the first locking member 211a-2 and the first latching member are not limited here, and in actual application, those skilled in the art may design them according to their specific needs, as long as they meet the requirements for use. For example, the first latching member may be a locking base (not shown) that can engage with the first locking member 211a-2, the locking base being mounted on the equipment housing 211, specifically attached to a position such as the frame 211b, and / or the first latching member may be a latching hole 211b-1c provided in the equipment housing 211, for which one can refer to Figure 5, and the latching hole 211b-1c is specifically provided in the upper side sill 211b-1a, in which case the structural form of the first latching member is simple and advantageous for reducing the overall weight of the vehicle.

[0105] Here, the above solution, in which both the first locking member 211a-2 and the first latching member are provided in the underfloor equipment system 2, is merely a preferred solution in the embodiment of this application and does not limit the scope of the integrated underfloor equipment system provided in this application. In actual application, the first latching member may be provided in the vehicle body system 1 and does not affect the realization of the locking function of the first inspection door 211a.

[0106] Combining Figures 3 and 4, in the area where the first bottom plate 211c and the first inspection door 211a of the frame 211b are not located, i.e., the top frame 211b-2 and the vertical frame 211b-3, a covering plate 211e is placed to cover the top and vertical sides of the functional equipment 21, thereby better isolating and protecting the functional device.

[0107] In some other embodiments, as shown in Figure 11, the first inspection door 211a may be provided on the first bottom plate 211c.

[0108] In detail, the first bottom plate 211c is provided with an inspection opening (not shown), and a slide guide portion 211c-1a and a groove 211c-1c are arranged on the first bottom plate 211c. A slide member 211a-6 is arranged on the first inspection door 211a. The slide member 211a-6 can slide along the slide guide portion 211c-1a to adjust the relative position between the first inspection door 211a and the first bottom plate 211c.

[0109] When the sliding member 211a-6 slides into the groove 211c-1c, the first inspection door 211a closes the inspection opening. To inspect through the inspection opening, the first inspection door 211a is pushed up to release the sliding member 211a-6 from the groove 211c-1c, and then the first inspection door 211a is slid along the slide guide portion 211c-1a to open the inspection opening.

[0110] The specific structural forms of the slide guide portion 211c-1a and the slide member 211a-6 can be diverse, as long as they satisfy the requirements for use. In the solution shown in the drawings, as shown in Figures 12 and 13, the slide member 211a-6 may be a roller, and the slide guide portion 211a-1a may be a channel steel, with a slide groove 211c-1b provided in the side wall of the channel steel, the roller being able to slide within the slide groove 211c-1b to adjust the position of the first inspection door 211a relative to the first bottom plate 211c, and the recessed groove 211c-1c and the slide groove 211c-1b being in communication, and otherwise the roller may slide directly within the space limited by the channel steel.

[0111] A locking member is further positioned on the first inspection door 211a. After the sliding member 211a-6 slides into the groove 211c-1c, the locking member locks the first inspection door 211a, preventing the first inspection door 211a from escaping from the inspection opening during the operation of the railway vehicle. The specific structural form of the locking member is not limited here, and those skilled in the art may install it according to their specific needs in actual application. For example, the locking member may include a rotatable locking plate, which abuts against the side wall of the channel steel to achieve locking.

[0112] Aside from the translation solution, the first inspection door 211a may be rotatably mounted on the first bottom plate 211c.

[0113] As shown in Figure 14, the underframe 11 of the vehicle body system 1 includes a connecting member 111 and two underframe side sills 112 that are arranged opposite each other in the lateral direction. The connecting member 111 connects the two underframe side sills 112 to form the underframe 11 as a whole member. Specifically, the connecting member 111 may be an underframe crossbeam and a vehicle body floor, or the connecting member 111 may include only the vehicle body floor, in which case the thickness of the vehicle body floor may be appropriately increased.

[0114] The underfloor equipment system 2 may further include a connecting base 211b-4, which may be attached to the frame 211b or to the covering plate 211e. At least one of the connecting member 111 and the underframe side sill 112 is connected to the connecting base 211b-4 to realize the connection and mounting of the underfloor equipment system 2 and the vehicle body system 1.

[0115] When closed, the first inspection door 211a can contact the underframe side sill 112. In this way, the gap between the first inspection door 211a and the underframe side sill 112 is effectively eliminated, further reducing the possibility of dust and other impurities from the outer space III in the lateral direction of the railway vehicle entering the underfloor equipment system 2, thereby ensuring the cleanliness of the inside of the underfloor equipment system 2, and further improving the aerodynamic performance of the entire vehicle.

[0116] As shown in Figure 15, a second sealing member 211a-3 is positioned on the first inspection door 211a, and the first inspection door 211a is in contact with the frame side sill 112 by the second sealing member 211a-3. The second sealing member 211a-3 improves the sealing effect by absorbing the manufacturing tolerance between the first inspection door 211a and the frame side sill 112 through its own deformation.

[0117] Here, the mounting position of the second sealing member 211a-3 is related to the opening and closing method of the first inspection door 211a and the direction of compression deformation of the second sealing member 211a-3.

[0118] In one embodiment, the second sealing member 211a-3 can be compressed laterally, and under such compressive deformation conditions, wear of the second sealing member 211a-3 during use is small. Refer to Figure 15 for such an embodiment, in which case the first inspection door 211a has a drop-down structure and the second sealing member 211a-3 may be attached to the inner wall surface of the first inspection door 211a in the later direction. Alternatively, refer to Figure 16 for such an embodiment, in which case the first inspection door 211a has an up-swing structure and the second sealing member 211a-3 is attached to the outer wall surface of the first inspection door 211a in the later direction.

[0119] In another embodiment, the second sealing member 211a-3 may be compressed vertically, in which case the second sealing member 211a-3 may be attached to the top portion of the first inspection door 211a.

[0120] As shown in Figure 17, a first ventilation opening 211a-4 may be provided in the first inspection door 211a, and a first filter member (not shown) may be further provided in the first ventilation opening 211a-4, the first filter member being specifically a filter mesh or the like. By providing the first ventilation opening 211a-4, the functional equipment 21 takes in air from the outer space III in the lateral direction of the underfloor equipment system 2, thereby achieving ventilation and heat dissipation for the functional devices.

[0121] As shown in Figure 18, in actual use, a first cavity I is formed between the equipment housing 211 and the frame 11, and the first cavity I is specifically located above the equipment housing 211, and air is present within the first cavity I in the same manner.

[0122] Based on this, in the embodiment of the present application, the equipment housing 211 comprises an inner chamber (not shown) and a transition chamber 211-1, a functional device is mounted in the inner chamber, a first opening is provided at the top of the equipment housing 211 that connects the transition chamber 211-1 and the first cavity I, the inner chamber and the transition chamber 211-1 are separated by a partition plate 211e-1 which is part of the covering plate 211e, a second ventilation opening 211e-1a is provided in the partition plate 211e-1, a second filter member (not shown) is further arranged in the second ventilation opening 211e-1a, the second filter member may specifically be a filter mesh, and the first ventilation opening 211a-4 is in communication with the transition chamber 211-1. In this way, the functional equipment 21 can take in air from the outer space III in the lateral direction of the underfloor equipment system 2, and also take in air from within the first cavity I, thereby enhancing the ventilation and heat dissipation effects.

[0123] In fact, a second cavity II is also formed inside the bridge cover 22, and air is present inside the second cavity II in the same way. Thus, a second opening is provided on the vertical side of the equipment housing 211, connecting the transition chamber 211-1 and the second cavity II, and the second cavity II and the first cavity I can communicate. In this case, the functional equipment 21 can take in even more air from inside the second cavity II, further improving the ventilation and heat dissipation effects.

[0124] Here, there is a correspondence between the differences in ventilation and heat dissipation structural configurations and the types of functional devices installed within the functional equipment 21. If the heat dissipation needs of the functional devices within the functional equipment 21 are normal, air can be directly drawn in from the outside space III through the first ventilation opening 211a-4. If the heat dissipation needs of the functional devices within the functional equipment 21 are high, air can be drawn in simultaneously through the first ventilation opening 211a-4 and the second ventilation opening 211e-1a. If the heat dissipation needs of the functional devices within the functional equipment 21 are very low, they do not need to be placed in close contact with the first ventilation opening 211a-4 or the second ventilation opening 211e-1a, and the basic heat dissipation requirements can be met by using the airflow after heat dissipation by other functional devices. In other words, when actually using the equipment, the ventilation and heat dissipation structural configuration of the equipment housing 211 can be adjusted based on differences such as the type and mounting position of the heat dissipation devices within the functional equipment 21.

[0125] Referring to Figures 19 to 30, Figure 19 is a schematic diagram of the structure of a specific embodiment of the bridge cover, Figure 20 is a diagram of the connection structure between the bottom part of Figure 19 and the first bottom plate, Figure 21 is a schematic diagram of the structure of the modified solution of Figure 20, Figure 22 is a cross-sectional view of Figure 19, Figure 23 is a local enlarged view of area E in Figure 22, Figure 24 is a local enlarged view of area F in Figure 22, Figure 25 is a diagram of the connection structure between the slide rail and the lower side sill, Figure 26 is a diagram of the connection structure between the adapter plate and the anti-rotation member, Figure 27 is a schematic diagram of the structure of a specific embodiment of the second locking member, Figure 28 is a schematic diagram of the structure connecting the second bottom plate and the lower side sill by the second locking member of Figure 27, Figure 29 is a schematic diagram of the structure of another specific embodiment of the second locking member, and Figure 30 is a schematic diagram of the structure connecting the second bottom plate and the lower side sill by the second locking member of Figure 29.

[0126] As shown in Figure 19, the bridge cover 22 includes a bottom component 221 and two side components 222 that are spaced apart laterally.

[0127] At least one of the side component 222 and the bottom component 221 is connected to the equipment housing 211, thereby connecting the bridge cover 22 and the functional equipment 21 as a whole component, thereby improving the overall integrity of the underfloor equipment system 2 and providing advantages for butt-fitting and mounting of the underfloor equipment system 2 and the vehicle body system 1. Here, the bridge cover 22 does not actually have to be connected to the functional equipment 21. In this case, the bridge cover 22 may be directly connected to the vehicle body system 1 to fix the bridge cover 22, and the bridge cover 22 and the functional equipment 21 may be in contact but not connected. For the sake of clarity, in the related descriptions below, the connection between the bridge cover 22 and the functional equipment 21 will be used as an example.

[0128] Mounting interfaces 211c-3a extending horizontally are provided on the vertical side of the equipment housing 211. Connecting members in the form of bolts are mounted within the mounting interface 211c-3a and connected to the bottom component 221, thereby enabling the mounting and fixing of the bottom component 221 to the equipment housing 211. As shown in Figure 9, the mounting interface 211c-3a may also be provided on the vertical side wall 211c-3 of the first bottom plate 211c. Of course, the mounting interface 211c-3a may also be provided at other locations on the equipment housing 211, for example, by attaching it to the covering plate 211e of the vertical frame 211b-3.

[0129] As shown in Figures 19 and 20, the bottom component 221 includes a slide rail 221a fixed to the longitudinal side of the equipment housing 211 and a second bottom plate 221b slidably mounted on the slide rail 221a. In this way, the relative position of the second bottom plate 221b and the slide rail 221a can be easily adjusted, and when the second bottom plate 221b slides outward along the lateral direction relative to the slide rail 221a, an opening is formed in the bottom component 221, allowing a worker to enter the second cavity II inside the bridge cover 22 through this opening and conveniently perform maintenance work on the inside of the bridge cover 22 or on related areas such as the longitudinal side of the functional equipment 21.

[0130] As an alternative solution to the above solution, as shown in Figure 21, the bottom component 221 may have a one-piece structure and be fixed and attached to the first bottom plate 211c as a whole.

[0131] For the sake of clarity, the following description of the embodiments of this application will focus only on the solution in which the bottom component 221 includes a slide rail 221a and a second bottom plate 221b.

[0132] Referring again to Figure 20, the slide rail 221a includes a horizontal plate portion 221a-1 and a vertical plate portion 221a-2 arranged to form an angle between them. The vertical plate portion 221a-2 is connected to the first bottom plate 211c, and the horizontal plate portion 221a-1 is provided with a slide joint portion 221a-1a. Slide engagement portions are provided at both ends of the second bottom plate 221b in the vertical direction, and these slide engagement portions can slide along the slide joint portion 221a-1a, thereby enabling the sliding mounting of the second bottom plate 221b on the slide rail 221a.

[0133] One of the slide joint portion 221a-1a and the slide engagement portion is a recessed structure, and the other is a protruding structure, and the protruding structure and the recessed structure form a slide guide.

[0134] Furthermore, the bridge cover 22 further includes a crimping member 228, which is attached to the slide rail 221a to improve the integration of equipment, or the crimping member 228 may be mounted independently to the equipment housing 211. The crimping member 228 tightens the second bottom plate 221b in the vertical direction, reducing the relative vertical displacement between the second bottom plate 221b and the slide rail 221a during the operation of the railway vehicle, and further improving the structural stability of the bridge cover 22.

[0135] Herein, the embodiments of this application do not limit the specific structural form of the crimping member 228, and in actual application, those skilled in the art can arrange it according to their specific needs, as long as it satisfies the requirements for use. Exemplaryly, as shown in Figures 23 and 24, the crimping member 228 includes a press roller 228a, which is mounted on a slide rail 221a and is rotatable, reducing the sliding resistance of the second bottom plate 221b and further reducing wear of the second bottom plate 221b during attachment and detachment, or the crimping member 228 may be a position-limiting structure in the form of a crimping block or the like.

[0136] When installing the components, the vertical mounting position of the crimping member 228 is adjusted, and the pitch between the crimping member 228 and the second bottom plate 221b is also adjusted to avoid excessive frictional resistance between the crimping member 228 and the second bottom plate 221b.

[0137] Furthermore, the second bottom plate 221b may be provided with a projection 221b-3, and the crimping member 228 specifically contacts the projection 221b-3 in the vertical direction. By arranging the projection 221b-3, wear of the main structure of the second bottom plate 221b can be reduced, and when installing, the mounting position of the crimping member 228 can be appropriately raised, so that the crimping member 228 contacts only the projection 221b-3, thereby reducing wear on other areas of the second bottom plate 221b. The specific structural form of the projection 221b-3 is not limited here.

[0138] In practical applications, the vertical displacement of the second bottom plate 221b may be limited by adjusting the sliding fit structure between the slide rail 221a and the second bottom plate 221b. For example, the slide rail 221a may be provided with a slide groove, and the second bottom plate 221b may slide within the slide groove. In such an embodiment, the side walls of the slide groove can restrict the position of the second bottom plate 221b, thereby suppressing its vertical displacement.

[0139] The second base plate 221b may be a single-piece structure.

[0140] Alternatively, the second bottom plate 221b may include a plurality of partition plates 221b-1 arranged laterally, thereby reducing the difficulty of processing the second bottom plate 221b. When Figure 24 is joined, a third sealing member 221b-2 is provided between two adjacent partition plates 221b-1, and the two adjacent partition plates 221b-1 come into contact with each other through the third sealing member 221b-2, improving the sealing performance.

[0141] In some preferred embodiments, the bottom component 221 is located on one lateral side of the slide rail 221a and further includes a lower side sill 221c connected to the slide rail 221a. In this way, the lower side sill 221c and the slide rail 221a are combined to form a frame structure, thereby improving the structural strength of the bridge cover 22.

[0142] Herein, the embodiments of this application do not limit the specific connection configuration between the lower side sill 221c and the slide rail 221a. In actual application, those skilled in the art can adjust it according to their specific needs, as long as the requirements for use are met.

[0143] As shown in Figures 25 and 26, the bridge cover 22 further includes an adapter plate 224. The adapter plate 224 includes a first plate portion 224a and a second plate portion 224b that are arranged to form an angle, specifically a 90-degree angle. The first plate portion 224a is connected to the slide rail 221a, and the second plate portion 224b is connected to the lower side sill 221c, thereby enabling connection and mounting between the lower side sill 221c and the slide rail 221a.

[0144] The lower side sill 221c and the second plate portion 224b are specifically connected by connecting bolts 225. As shown in Figure 26, the lower side sill 221c is further provided with a rotation prevention member 221c-1, which has a locking groove 221c-1a, and the head of the connecting bolt 225 is locked in the locking groove 221c-1a, restricting the rotation of the connecting bolt 225. Thus, when assembling the lower side sill 221c and the second plate portion 224b, it is preferable to tighten the nuts directly, making installation more convenient.

[0145] In the embodiment shown in Figure 26, the anti-rotation member 221c-1 is specifically a channel steel, and the two side wall plates of the channel steel effectively prevent rotation of the connecting bolt 225. Otherwise, the anti-rotation member 221c-1 may be a structural member such as an anti-rotation plate or an anti-rotation rod. The anti-rotation plate still engages with the outer wall surface of the head of the connecting bolt 225 to prevent rotation, and the anti-rotation rod is inserted radially through the head of the connecting bolt 225 to achieve the purpose of preventing rotation.

[0146] Based on the sliding mounting of the second bottom plate 221b, in the embodiments of this application, the bridge cover 22 further includes a second locking member 227 that locks the second bottom plate 221b to the lower side sill 221c and further locks the normal mounting position of the second bottom plate 221b. Herein, the embodiments of this application do not limit the specific structural form of the second locking member 227, and in actual application, those skilled in the art may design it according to their specific needs, as long as it satisfies the requirements of use.

[0147] In one embodiment, as shown in Figures 27 and 28, the second locking member 227 includes a locking pin 227a and a locking cylinder seat 227b.

[0148] The locking cylinder seat 227b is fixedly attached to the second base plate 221b, and a grooved rail 227b-1 is provided on the cylinder wall of the locking cylinder seat 227b. The locking pin 227a includes a pin portion 227a-1 that is inserted into the locking cylinder seat 227b, and a handle portion 227a-2 that is connected to the pin portion 227a-1 and located within the grooved rail 227b-1. The handle portion 227a-2 displaces the pin portion 227a-1 and adjusts the position of the handle portion 227a-2 within the grooved rail 227b-1, thereby enabling the locking or unlocking of the second locking member 227 with respect to the second base plate 221b.

[0149] In other embodiments, as shown in Figures 29 and 30, the second locking member 227 includes a locking bolt 227c, a locking block 227d, a locking rope 227e, a locking nut 227f, and a locking plate base 227g.

[0150] The lock plate base 227g is attached to the second bottom plate 221b, and the lock block 227d is attached to the lock plate base 227g. The head of the locking bolt 227c is provided with a lock hole 227c-1 that extends along its radial direction. The locking bolt 227c passes through the lock plate base 227g and the lower side sill 221c before being connected to the lock nut 227f, thereby locking the second bottom plate 221b and the lower side sill 221c. The lock rope 227e can be inserted through the lock hole 227c-1 and connected to the lock block 227d, thereby locking the locking bolt 227c and reducing the possibility of the locking bolt 227c loosening and falling out. Using such a solution, the second locking member 227 is an independent member, eliminating the need to process other structural members on the second bottom plate 221b, which is advantageous for simplifying the structure of the second bottom plate 221b.

[0151] As a variation of the above embodiment, the lock plate base 227g may be omitted. In this case, the lock block 227d is directly attached to the second bottom plate 221b, and the locking bolt 227c passes directly through the second bottom plate 221b, connecting the second bottom plate 221b and the lower side sill 221c.

[0152] Combining Figures 28 and 30, the bridge cover 22 further includes a fourth sealing member 226 that seals the gap between the lower side sill 221c and the second bottom plate 221b, thereby improving the sealing performance.

[0153] The side component 222 and the bottom component 221 may be fixed and connected, thus simplifying the structural form of the bridge cover 22.

[0154] Alternatively, the side component 222 and the bottom component 221 may be rotatably connected, so that the side component 222 can be switched between an open and a closed state, increasing the number of inspection positions and facilitating inspection work on the underfloor equipment system 2. Similar to the first inspection door 211a described above, the rotatably positioned side component 222 includes an up-swing structure and a down-down structure. When in the up-swing structure, the side component 222 is rotatably mounted on the frame 11. When in the down-down structure, the side component 222 is rotatably mounted on the lower side sill 221c. If the solution does not include the lower side sill 221c, the side component 222 is directly rotatably mounted on the second bottom plate 221b.

[0155] Furthermore, it further includes a fifth sealing member 222a that provides sealing between the side component 222 and the bottom component 221, between the side component 222 and the equipment housing 211, and between the side component 222 and the underframe 11. In this way, the possibility of impurities such as dust in the outer space III entering the bridge cover 22 is reduced, ensuring cleanliness inside the bridge cover 22, and further improving the aerodynamic performance of the entire vehicle.

[0156] The first sealing member 211a-1, the second sealing member 211a-3, the third sealing member 221b-2, the fourth sealing member 226, and the fifth sealing member 222a involved in the embodiments of this application described above may be the same in type and structure, or they may be different, as long as they can be arranged according to the actual needs of a person skilled in the art and meet the requirements for use. Exemplarily, these sealing members are manufactured from materials having a certain degree of flexible deformation capability, such as rubber, latex, or resin.

[0157] Unlike the equipment housing 211, the bridge cover 22 has a different structural configuration. Since the bridge cover 22 lacks the upper side sills 211b-1a and transitional side sills 211b-1b of the equipment housing 211, the bridge cover 22 has a relatively simpler structural configuration and is lighter, which is advantageous for achieving overall vehicle weight reduction. Under these conditions, the fifth sealing member 222a between the side component 222 and the equipment housing 211 is provided in the vertical gap between the side component 222 and the equipment housing 211.

[0158] The fifth sealing member 222a between the side component 222 and the frame 11 can be positioned by referring to the second sealing member 211a-3 described above, and no further explanation is given here.

[0159] Furthermore, a third locking member 222b is positioned on the side component 222, and a second latching member is positioned on the frame 11. The third locking member 222b and the second latching member work together to lock or unlock the side component 222.

[0160] The structural configuration of the third locking member 222b and the second latching member can be described by referring to the first locking member 211a-2 and the first latching member described above, and no further explanation is provided here.

[0161] In some embodiments, the bottom component 221 is provided with a second inspection door, which allows inspection and maintenance of the underfloor equipment system at the location where the bridge cover 22 is located. For specific mounting configurations of the second inspection door, refer to the first inspection door 211a provided on the first bottom plate 211c, and will not be elaborated here.

[0162] The foregoing are merely preferred embodiments of the present application, and those skilled in the art may make several improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also fall within the scope of protection of the present application. [Explanation of Symbols]

[0163] 01 ···Underfloor equipment system; 011...Functional equipment; 011a ···Equipment housing; 011b ···Access door; 012... Equipment cabin; 012a ···Cabin door; 02 ···frame; 1. Vehicle body system; 1a...Car body outer contour surface; 11...frame; 111...Connecting member; 112 ···Underframe side sill; 2. Underfloor equipment system; 2a...outer contour surface under the floor; 2a-1...first outer contour surface; 2a-2 ···Second outer contour surface; 21...Functional equipment; 211... Equipment housing; 211-1...Transition room; 211a ···First inspection door; 211a-1 ···First sealing member; 211a-2 ···First locking member; 211a-3 ···Second sealing member; 211a-4...1st ventilation opening; 211a-5 ···Second hinge connecting tube; 211a-6 ···Slide component; 211b...framework; 211b-1 ···Side frame; 211b-1a ···Upper side sill; 211b-1b ···Transition side sill; 211b-1c ···Latching hole; 211b-2 ···Top frame; 211b-3 ···Vertical frame; 211b-4 ···Connection block; 211b-5 ···First storage groove; 211c...1st bottom plate; 211c-1...Bottom wall; 211c-1a ···Slide guide section; 211c-1b ···Slide groove; 211c-1c...concave groove; 211c-2...lateral side wall; 211c-2a...Second accommodation groove; 211c-2b ···First hinge connecting tube; 211c-3 ···Vertical side wall; 211c-3a ···Mounting interface; 211d...Inspection hatch; 211e...Covering board; 211e-1 ···Partition plate; 211e-1a...Second ventilation opening; 22...Bridge cover; 221...Bottom parts; 221a ···Slide rail; 221a-1 ···Horizontal plate part; 221a-1a ···Slide joint; 221a-2 ···Vertical plate part; 221b...Second bottom plate; 221b-1 ···Partition board; 221b-2 ···Third sealing member; 221b-3...protrusion; 221c ···Lower side sill; 221c-1 ···Anti-rotation member; 221c-1a...Latching groove; 222... Side parts; 222a ···Fifth sealing member; 222b ···Third locking member; 224...Adapter plate; 224a ···First plate section; 224b ···Second plate section; 225 ···Connecting bolt; 226 ···Fourth sealing member; 227 ···Second locking member; 227a ··· Locking pin; 227a-1 ···Pin section; 227a-2 ···Handle section; 227b ···Cylinder seat with lock; 227b-1 ... grooved rail; 227c ···Locking bolt; 227c-1 ···Lock hole; 227d ···Rock block; 227e ···Rock rope; 227f ···Lock nut; 227g ··· Locking plate stand; 228... Crimping material; 228a... Press roller; I ···First cavity; II ···Second cavity; III...outer space.

Claims

1. An integrated underfloor equipment system attached to a vehicle body system (1) of a railway vehicle, which includes a frame (11) and an outer contour surface (1a) of the vehicle body, wherein the integrated underfloor equipment system is A functional device (21) comprising a device housing (211) and a functional device mounted inside the device housing (211), wherein the device housing (211) is connected to the frame (11) and has a first outer contour surface (2a-1), and the functional device (21) includes a first inspection door (211a), An integrated underfloor equipment system characterized by comprising: a bridge cover (22) located on one or both sides in the longitudinal direction of the functional equipment (21), connected to the equipment housing (211), and having a second outer contour surface (2a-2), wherein the first outer contour surface (2a-1) and the second outer contour surface (2a-2) are combined with the outer contour surface (1a) of the vehicle body to form the outer contour of the railway vehicle; and a bridge cover (22) having a second outer contour surface (2a-2).

2. The integrated underfloor equipment system according to claim 1, characterized in that the first inspection door (211a) is located on the lateral side of the equipment housing (211) and is rotatably provided.

3. The integrated underfloor equipment system according to claim 2, characterized in that the first inspection door (211a) has an up-swing structure or a down-drop structure.

4. The integrated underfloor equipment system according to claim 2, characterized in that the equipment housing (211) includes a frame (211b) and a first bottom plate (211c), the frame (211b) includes two lateral frames (211b-1) arranged opposite to each other in the lateral direction, the first bottom plate (211c) is connected to the two lateral frames (211b-1), and the first bottom plate (211c) and the lateral frames (211b-1) form an inspection opening (211d) that surrounds it, and the first inspection door (211a) is capable of closing the inspection opening (211d).

5. The integrated underfloor equipment system according to claim 4, further comprising a first sealing member (211a-1) arranged to surround the inspection opening (211d), wherein the first sealing member (211a-1) is attached to the first inspection door (211a).

6. The integrated underfloor equipment system according to claim 4, wherein the framework (211b) further includes a top frame (211b-2) and two vertical frames (211b-3) arranged opposite to each other in the vertical direction, and the two horizontal frames (211b-1) and the two vertical frames (211b-3) are all connected to the top frame (211b-2) and are all connected to the first bottom plate (211c).

7. The integrated underfloor equipment system according to claim 1, characterized in that the equipment housing (211) includes a first bottom plate (211c), and the first inspection door (211a) is provided on the first bottom plate (211c).

8. The first bottom plate (211c) is provided with an inspection opening, a slide guide portion (211c-1a), and a groove (211c-1c), and the first inspection door (211a) is provided with a slide member (211a-6) that is slidable along the slide guide portion (211c-1a) and adjusts the relative position between the first inspection door (211a) and the first bottom plate (211c). The integrated underfloor equipment system according to claim 7, characterized in that when the sliding member (211a-6) slides into the groove (211c-1c), the first inspection door (211a) closes the inspection opening.

9. The frame (11) includes a connecting member (111) and two frame side sills (112) that are arranged opposite each other in the lateral direction, and the connecting member (111) connects the two frame side sills (112), The integrated underfloor equipment system according to claim 1, characterized in that a plurality of connection bases (211b-4) are arranged on the functional equipment (21), and at least a portion of each of the connection bases (211b-4) is connected to the connecting member (111).

10. The integrated underfloor equipment system according to claim 1, characterized in that a first locking member (211a-2) is provided on the first inspection door (211a), and a first latching member is further provided on the equipment housing (211), and the first locking member (211a-2) and the first latching member cooperate to enable locking or unlocking of the first inspection door (211a).

11. The integrated underfloor equipment system according to claim 10, characterized in that the first latching member is a latching hole (211b-1c) provided in the equipment housing (211).

12. The frame (11) includes a connecting member (111) and two frame side sills (112) that are arranged opposite each other in the lateral direction, and the connecting member (111) connects the two frame side sills (112), The integrated underfloor equipment system according to claim 1, characterized in that when closed, the first inspection door (211a) can contact the frame side sill (112).

13. The integrated underfloor equipment system according to claim 12, characterized in that a second sealing member (211a-3) is placed on the first inspection door (211a), and the first inspection door (211a) contacts the underframe side sill (112) by the second sealing member (211a-3).

14. The integrated underfloor equipment system according to claim 1, characterized in that a first ventilation opening (211a-4) is provided in the first inspection door (211a), and a first filter member is further provided in the first ventilation opening (211a-4).

15. An integrated underfloor equipment system according to claim 14, characterized in that a first cavity (I) is formed between the equipment housing (211) and the base frame (11), the equipment housing (211) comprises an inner chamber and a transition chamber (211-1), the functional device is mounted in the inner chamber, a first opening is provided at the top of the equipment housing (211) to connect the transition chamber (211-1) and the first cavity (I), the inner chamber and the transition chamber (211-1) are separated by a partition plate (211e-1), a second ventilation opening (211e-1a) is provided in the partition plate (211e-1), a second filter member is further arranged in the second ventilation opening (211e-1a), and the first ventilation opening (211a-4) and the transition chamber (211-1) are in communication.

16. The integrated underfloor equipment system according to claim 15, characterized in that a second cavity (II) is formed inside the bridge cover (22), a second opening is further provided on the longitudinal side of the equipment housing (211) to connect the transition chamber (211-1) and the second cavity (II), and the second cavity (II) and the first cavity (I) are in communication.

17. The integrated underfloor equipment system according to claim 1, characterized in that there are multiple functional devices (21), each functional device (21) is arranged with spacing along the vertical direction, and a bridge cover (22) is provided between two adjacent functional devices (21).

18. The bridge cover (22) includes a bottom part (221) and two side parts (222), the two side parts (222) being spaced apart laterally. The integrated underfloor equipment system according to any one of claims 1 to 17, characterized in that at least one of the side component (222) and the bottom component (221) is connected to the equipment housing (211).

19. The integrated underfloor equipment system according to claim 18, characterized in that a mounting interface (211c-3a) extending along the horizontal direction is provided on the vertical side of the equipment housing (211), and the bottom component (221) is attached to the equipment housing (211) by the mounting interface (211c-3a).

20. The integrated underfloor equipment system according to claim 19, characterized in that the bottom component (221) includes a slide rail (221a) fixed to the vertical side of the equipment housing (211), and a second bottom plate (221b) slidably mounted on the slide rail (221a).

21. The integrated underfloor equipment system according to 20, characterized in that the second bottom plate (221b) includes a plurality of partition plates (221b-1) arranged in the lateral direction, a third sealing member (221b-2) is provided between two adjacent partition plates (221b-1), and two adjacent partition plates (221b-1) are in contact with each other by the third sealing member (221b-2).

22. The integrated underfloor equipment system according to claim 20, characterized in that the bottom component (221) is located on one side in the lateral direction of the slide rail (221a) and further includes a lower side sill (221c) connected to the slide rail (221a).

23. The integrated underfloor equipment system according to 22, further comprising an adapter plate (224), the adapter plate (224) comprising a first plate portion (224a) and a second plate portion (224b) arranged to form an angle, the first plate portion (224a) being connected to the slide rail (221a), and the second plate portion (224b) being connected to the lower side sill (221c).

24. The integrated underfloor equipment system according to 23, characterized in that the lower side sill (221c) and the second plate portion (224b) are connected by connecting bolts (225), and a rotation prevention member (221c-1) capable of restricting the rotation of the connecting bolts (225) is further provided on the lower side sill (221c).

25. The integrated underfloor equipment system according to claim 22, further comprising a fourth sealing member (226) for sealing the gap between the lower side sill (221c) and the second bottom plate (221b).

26. The integrated underfloor equipment system according to claim 22, further comprising a second locking member (227) capable of locking the second bottom plate (221b) to the lower side sill (221c).

27. The second locking member (227) includes a locking pin (227a) and a locking cylinder seat (227b), the locking cylinder seat (227b) being fixedly attached to the second bottom plate (221b), the locking pin (227a) being mounted inside the locking cylinder seat (227b) and displaceable relative to the locking cylinder seat (227b), and / or The integrated underfloor equipment system according to 26, characterized in that the second locking member (227) includes a locking bolt (227c) having a locking hole (227c-1) extending radially along its head, a fixedly positioned locking block (227d), and a locking rope (227e) that can be inserted into the locking hole (227c-1) and connected to the locking block (227d).

28. The integrated underfloor equipment system according to claim 20, further comprising a compression member (228) for tightening the second bottom plate (221b) in the vertical direction.

29. The integrated underfloor equipment system according to 28, characterized in that the crimping member (228) includes a press roller (228a) attached to the slide rail (221a), the second bottom plate (221b) is provided with a projection (221b-3), and the press roller (228a) is in contact with the projection (221b-3) in the vertical direction.

30. The integrated underfloor equipment system according to claim 18, characterized in that the side component (222) is rotatably mounted on the bottom component (221) or on the underframe (11).

31. The integrated underfloor equipment system according to claim 30, further comprising a fifth sealing member (222a) that provides a seal between the side part (222) and the bottom part (221), between the side part (222) and the equipment housing (211), and between the side part (222) and the frame (11).

32. The integrated underfloor equipment system according to claim 30, characterized in that a third locking member (222b) is provided on the side component (222), a second latching member is provided on the frame (11), and the third locking member (222b) and the second latching member cooperate to enable locking or unlocking of the side component (222).

33. The integrated underfloor equipment system according to claim 18, characterized in that a second inspection door is provided in the bottom component (221).

34. A railway vehicle comprising a body system (1) and an underfloor equipment system (2), wherein the underfloor equipment system (2) is an integrated underfloor equipment system as described in any one of claims 1 to 33.

35. A bridge cover applicable to an integrated underfloor equipment system, wherein the integrated underfloor equipment system includes a functional device (21), the functional device (21) includes a device housing (211), and the device housing (211) comprises a first outer contour surface (2a-1), The bridge cover (22) is located on one or both sides in the longitudinal direction of the functional equipment (21) and has a second outer contour surface (2a-2), and the first outer contour surface (2a-1) and the second outer contour surface (2a-2) are combined to form the underbody outer contour surface (2a) of the railway vehicle. A bridge cover applicable to an integrated underfloor equipment system, characterized in that the bridge cover (22) includes a bottom component (221) and two side components (222), the two side components (222) being spaced apart laterally, and at least one of the side components (222) and the bottom component (221) being connected to the equipment housing (211).

36. The bridge cover applicable to the integrated underfloor equipment system according to claim 35, characterized in that the bottom component (221) includes a slide rail (221a) fixed to the vertical side of the equipment housing (211) and a second bottom plate (221b) slidably mounted on the slide rail (221a).

37. A bridge cover applicable to an integrated underfloor equipment system according to 36, characterized in that the second bottom plate (221b) includes a plurality of partition plates (221b-1) arranged in the lateral direction, a third sealing member (221b-2) is provided between two adjacent partition plates (221b-1), and two adjacent partition plates (221b-1) are in contact by the third sealing member (221b-2).

38. The bridge cover applicable to the integrated underfloor equipment system according to claim 36, characterized in that the bottom component (221) is located on one side in the lateral direction of the slide rail (221a) and further includes a lower side sill (221c) connected to the slide rail (221a).

39. A bridge cover applicable to an integrated underfloor equipment system according to 38, further comprising an adapter plate (224), the adapter plate (224) comprising a first plate portion (224a) and a second plate portion (224b) arranged to form an angle, the first plate portion (224a) being connected to the slide rail (221a), and the second plate portion (224b) being connected to the lower side sill (221c).

40. A bridge cover applicable to an integrated underfloor equipment system according to 39, characterized in that the lower side sill (221c) and the second plate portion (224b) are connected by connecting bolts (225), and a rotation prevention member (221c-1) capable of restricting the rotation of the connecting bolts (225) is further provided on the lower side sill (221c).

41. A bridge cover applicable to an integrated underfloor equipment system according to claim 38, further comprising a fourth sealing member (226) for sealing the gap between the lower side sill (221c) and the second bottom plate (221b).

42. A bridge cover applicable to an integrated underfloor equipment system according to claim 38, further comprising a second locking member (227) capable of locking the second bottom plate (221b) to the lower side sill (221c).

43. The second locking member (227) includes a locking pin (227a) and a locking cylinder seat (227b), the locking cylinder seat (227b) being fixedly attached to the second bottom plate (221b), the locking pin (227a) being mounted inside the locking cylinder seat (227b) and displaceable relative to the locking cylinder seat (227b), and / or The bridge cover applicable to the integrated underfloor equipment system according to 42, characterized in that the second locking member (227) includes a locking bolt (227c) having a locking hole (227c-1) extending radially along its head, a fixedly positioned locking block (227d), and a locking rope (227e) that can be inserted into the locking hole (227c-1) and connected to the locking block (227d).

44. A bridge cover applicable to an integrated underfloor equipment system according to claim 36, further comprising a compression member (228) for tightening the second bottom plate (221b) in the vertical direction.

45. The bridge cover applicable to the integrated underfloor equipment system according to claim 44, characterized in that the crimping member (228) includes a press roller (228a) attached to the slide rail (221a), the second bottom plate (221b) is provided with a projection (221b-3), and the press roller (228a) abuts against the projection (221b-3) in the vertical direction.

46. A bridge cover applicable to an integrated underfloor equipment system according to any one of claims 35 to 45, characterized in that the side component (222) is rotatably mounted on the bottom component (221) or rotatably mounted on the underframe (11) of a railway vehicle.

47. A bridge cover applicable to the integrated underfloor equipment system according to claim 46, further comprising a fifth sealing member (222a) that provides a seal between the side part (222) and the bottom part (221), between the side part (222) and the equipment housing (211), and between the side part (222) and the frame (11).

48. A bridge cover applicable to the integrated underfloor equipment system described in claim 46, characterized in that a third locking member (222b) is provided on the side component (222), a second latching member is provided on the frame (11), and the third locking member (222b) and the second latching member cooperate to enable locking or unlocking of the side component (222).

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