RAIL VEHICLE AND COMBINED UNDERBODY DEVICE AND ASSOCIATED BRIDGE COVER

Abstract

Rail vehicle and integrated underbody equipment system and associated bridge cover. The integrated underbody equipment system is attached to a vehicle body system of the rail vehicle. The vehicle body system comprises a chassis and has an outer contour surface.The combined underbody equipment system comprises the following: functional devices, each comprising a device housing and a functional device, wherein the functional device is mounted in the device housing, the device housing is designed for connection with the underframe, the device housing has a first outer contour surface and the device housing includes a first access hatch, and a bridge cover located on one or two longitudinal sides of each functional device, wherein the bridge cover is connected to the device housing, the bridge cover has a second outer contour surface and the first outer contour surface, the second outer contour surface and the vehicle body outer contour surface are combined to form an outer contour of the rail vehicle.The combined underfloor equipment system has relatively low redundancy, relatively low weight, and a relatively high space utilization rate, and can be easily repaired.

Description

[0001] The present application claims priority over Chinese patent applications No. 202310800954X entitled “BRIDGE COVER APPLIED TO A COMBINED UNDERRIDE EQUIPMENT SYSTEM” and No. 2023108057365 entitled “COMBINED UNDERRIDE EQUIPMENT SYSTEM AND RAIL VEHICLE”, which were filed with the Chinese Patent Office on June 30, 2023, and whose entire disclosure is incorporated herein by reference. AREA

[0002] The present application relates to the technical field of railway vehicles and in particular to a railway vehicle, an integrated underfloor device and a bridge cover of the integrated underfloor device. BACKGROUND

[0003] A rail vehicle comprises a vehicle body system and an underfloor equipment system. The vehicle body system mainly includes an underframe and carriages, which form the superstructure of the rail vehicle.

[0004] It will be on Fig. 1 referenced, which is a schematic structural view of an underfloor equipment system of a rail vehicle according to a particular embodiment of the prior art.

[0005] As in Fig. As shown in Figure 1, the underfloor equipment system 01 comprises functional equipment units 011 and an equipment compartment 012. The functional equipment units 011 refer to various auxiliary devices mounted under a subframe 02, such as an inverter, an air conditioning unit, etc. Each functional equipment unit 011 has an equipment housing 011a, which is attached to the subframe 02 to mount the functional equipment units 011 to the vehicle body system. The equipment compartment 012 is also attached to the subframe 02 and covers the functional equipment unit 011 to protect it. An outer wall surface of the equipment compartment 012 has a conformal design to improve the flatness of the underfloor contour of the rail vehicle and to reduce air resistance.

[0006] The equipment compartment 012 has a compartment flap 012a, and the equipment housing 011a has a housing flap 011b. During maintenance of the functional equipment units 011, a worker can open the compartment flap 012a and the housing flap 011b sequentially to repair the corresponding functional equipment units 011. SUMMARY

[0007] One objective of the present application is to provide a rail vehicle, an integrated underfloor equipment system, and a bridge cover for the underfloor equipment system. The integrated underfloor equipment system has low redundancy, reduced weight, high space efficiency, and is easy to repair. The bridge cover is provided longitudinally on one or both sides of a functional equipment unit of the integrated underfloor equipment system, thus covering an underfloor area not occupied by the functional equipment unit. The bridge cover has a second outer contour surface that directly forms part of an underfloor outer contour surface.

[0008] In a first aspect, the present application provides an integrated underfloor equipment system designed for mounting on the body of a rail vehicle. The body comprises a chassis and has an outer contour surface. The integrated underfloor equipment system includes at least one functional equipment unit and a bridge cover. The functional equipment unit comprises an equipment housing and a functional element mounted within the housing. The housing is designed for connection to the chassis and has a first outer contour surface. The housing has a first maintenance access panel. The bridge cover is provided longitudinally on one side or on each of two sides of the functional equipment unit and is connected to the housing.The bridge cover has a second outer contour surface, and the first outer contour surface, the second outer contour surface and the vehicle body outer contour surface together form an outer contour of the rail vehicle.

[0009] The integrated underfloor equipment system according to the present application integrates the functional equipment unit and the equipment compartment from the prior art into a single unit. The equipment housing of the functional equipment unit adopts a conformal design such that it has a first outer contour surface. The bridge cover is provided longitudinally on one side or on two sides of the functional equipment unit, so that it covers an underfloor area not occupied by the functional equipment unit. An outer wall surface of the bridge cover also adopts a conformal design such that it has a second outer contour surface. The first outer contour surface, the second outer contour surface, and the vehicle body outer contour surface together form the outer contour of the rail vehicle.

[0010] This arrangement eliminates the need for the equipment compartment in the prior art, thereby reducing the number of components and thus decreasing the redundancy of the underfloor equipment system. It also increases the available space beneath the vehicle, simplifying the installation and arrangement of the functional element. Furthermore, it reduces the weight of the rail vehicle, thus meeting the requirements for lightweight vehicle construction.

[0011] When maintenance is required, a worker only needs to open the equipment housing before repairing the relevant functional element, increasing maintenance efficiency. Furthermore, since there is only one housing, the equipment housing, the worker does not need to penetrate deep into the underground equipment system to access the functional element, but can perform the maintenance work in a large space, thus improving ease of maintenance.

[0012] In one embodiment, the first maintenance flap has a design that can be folded upwards or downwards.

[0013] In one embodiment, the first maintenance flap is located on a transverse side section of the device housing and is rotatable.

[0014] In one embodiment, the device housing comprises a frame and a first base plate. The frame includes two transverse side frames, distributed opposite each other along a transverse direction and connected to the first base plate. The first base plate and the two transverse side frames define a maintenance opening, and the first maintenance flap is designed to block the maintenance opening.

[0015] In one embodiment, the integrated underground device system further comprises a first seal that surrounds the maintenance opening and is attached to the first maintenance flap.

[0016] In one embodiment, the frame further comprises an upper frame and two longitudinal side frames. The two longitudinal side frames are distributed opposite each other along one longitudinal direction. The two transverse side frames and the two longitudinal side frames are all connected to the upper frame and the first base plate.

[0017] In one embodiment, the device housing comprises a first base plate, and the first maintenance hatch is arranged on the first base plate.

[0018] In one embodiment, the first base plate has a maintenance opening. The first base plate has a sliding guide section and forms a countersunk groove, and the first maintenance hatch is provided with a slide. The slide is designed to slide along the sliding guide section to adjust the position of the first maintenance hatch relative to the first base plate. The first maintenance hatch is designed to block the maintenance opening when the sliding guide section slides into the countersunk groove.

[0019] In one embodiment, the base frame comprises two base frame side supports distributed opposite each other along the transverse direction, and a connecting element that joins the two base frame side supports. The functional device unit is provided with several connection receptacles, and at least some of the connection receptacles are designed for connection with the connecting element.

[0020] In one embodiment, the first maintenance hatch is provided with a first locking element, and the device housing is provided with a first locking cooperation element. The first locking element and the first locking cooperation element are configured to interact in order to lock or unlock the first maintenance hatch.

[0021] In one embodiment, the first locking cooperation element is a locking cooperation hole provided on the device housing.

[0022] In one embodiment, the underframe comprises two underframe side supports, which are distributed opposite each other along the transverse direction, and a connecting element that joins the two underframe side supports. In a closed state, the first maintenance hatch is in contact with the underframe side supports.

[0023] In one embodiment, the first maintenance hatch is provided with a second seal, and the first maintenance hatch is in contact with the underframe side supports via the second seal.

[0024] In one embodiment, the first maintenance flap has a first vent opening, and the first vent opening has a first filter element.

[0025] In one embodiment, a first chamber is formed between the device housing and the base, and the device housing comprises an inner chamber and a transition chamber. The functional element is located within the inner chamber. A first opening is formed on an upper section of the device housing and is connected to the transition chamber and the first chamber. The inner chamber and the transition chamber are separated by a partition, and the partition has a second vent opening. The second vent opening is provided with a second filter element, and the first vent opening is connected to the transition chamber.

[0026] In one embodiment, a second chamber is formed within the bridge cover, and a second opening is provided on a longitudinal side section of the device housing. The second opening is connected to the transition chamber and the second chamber, and the second chamber is connected to the first chamber.

[0027] In one embodiment, several functional device units are provided, and these units are distributed along the longitudinal direction and spaced apart from one another. The bridge cover is arranged between two adjacent functional device units.

[0028] In one embodiment, the bridge cover comprises a base component and two side components. The two side components are distributed along a transverse direction and spaced apart from each other. The side components and / or the base component is / are connected to the device housing.

[0029] In one embodiment, a mounting opening is formed on a longitudinal side section of the device housing and extends in a transverse direction. The base component is attached to the device housing via this mounting opening.

[0030] In one embodiment, the base component comprises a slide rail and a second base plate. The slide rail is attached to the longitudinal side section of the device housing, and the second base plate is slidable on the slide rail.

[0031] In one embodiment, the second base plate comprises several sub-plates distributed along the transverse direction. A third seal is provided between each pair of adjacent sub-plates, and the two adjacent sub-plates are in contact with each other via this third seal.

[0032] In one embodiment, the bottom component further comprises a lower side support which is located on a transverse side of the slide rail and is connected to the slide rail.

[0033] In one embodiment, the integrated underfloor device system further comprises a connecting plate. The connecting plate comprises a first plate section and a second plate section. An enclosed angle exists between the first plate section and the second plate section. The first plate section is connected to the guide rail, and the second plate section is connected to the lower side support.

[0034] In one embodiment, the lower side support is connected to the second plate section via a connecting bolt. The lower side support is further equipped with an anti-rotation element designed to prevent the connecting bolt from rotating.

[0035] In one embodiment, the integrated underfloor device system further comprises a fourth seal designed to seal a gap between the lower side support and the second base plate.

[0036] In one embodiment, the integrated underfloor device system further comprises a second locking element designed to fasten the second base plate to the lower side support.

[0037] In one embodiment, the second locking element comprises a locking pin and a locking tube receptacle, wherein the locking tube receptacle is attached to the second base plate and the locking pin is mounted in the locking tube receptacle and is movable relative to the locking tube receptacle, and / or the second locking element comprises a locking bolt, a locking block and a locking cable, a head section of the locking bolt has a locking hole extending in a radial direction of the head section of the locking bolt, the locking block is attached and the locking cable passes through the locking hole and is connected to the locking block.

[0038] In one embodiment, the integrated underground device system further comprises a pressure component designed to press the second base plate firmly in a vertical direction.

[0039] In one embodiment, the pressure component comprises a pressure roller attached to the slide rail. The second base plate is provided with a projecting section, and the pressure roller abuts the projecting section in a vertical direction.

[0040] In one embodiment, each side component is rotatably attached to the base component, or each side component is rotatably attached to the base frame.

[0041] In one embodiment, the integrated underfloor device system further comprises a fifth seal designed to seal a gap between each side component and the bottom component, the device housing and the base frame.

[0042] In one embodiment, each side component is provided with a second locking element, and the base is provided with a second locking cooperation element. The second locking element and the second locking cooperation element are configured to interact in order to lock or unlock the side component.

[0043] In one embodiment, the bottom component is provided with a second maintenance hatch.

[0044] In a second aspect, the present application also provides a rail vehicle comprising a vehicle body system and the integrated underfloor equipment system described above.

[0045] Since the above-mentioned integrated underfloor equipment system has the above-mentioned technical effects, the rail vehicle with the integrated underfloor equipment system also has similar technical effects, which are not repeated here.

[0046] In a third aspect, the present application provides a bridge cover for use with the integrated underfloor equipment system. The integrated underfloor equipment system comprises a functional equipment unit. The functional equipment unit includes an equipment housing, and the equipment housing has a first outer contour surface. The bridge cover is provided longitudinally on one side or on each of two sides of the functional equipment unit and has a second outer contour surface. The first outer contour surface and the second outer contour surface together form an underfloor outer contour surface of a rail vehicle. The bridge cover comprises a bottom component and two side components, and the two side components are distributed along a transverse direction and spaced apart from each other. At least one of the two side components and the bottom component are designed for connection with the equipment housing.

[0047] The integrated underfloor equipment system is a novel system that integrates the functional equipment unit and the equipment compartment from the prior art into a single unit. The housing of the functional equipment unit adopts a conformal design, such that its first outer contour surface directly forms part of the underfloor outer contour surface. This eliminates the need for the equipment compartment from the prior art, reducing redundancy in the underfloor equipment system and improving space efficiency beneath the vehicle. This also facilitates lightweight vehicle construction and simplifies maintenance.

[0048] The bridge cover according to the present application is provided longitudinally on one side or on two sides of the functional equipment unit and covers an underfloor area not occupied by the functional equipment unit. An outer wall surface of the bridge cover also assumes a conformal design such that it has a second outer contour surface. The first outer contour surface and the second outer contour surface together form the underfloor outer contour surface, which improves the smoothness of the rail vehicle's movement and thereby reduces air resistance during the rail vehicle's movement.

[0049] In one embodiment, the base component comprises a slide rail and a second base plate. The slide rail is designed for attachment to a longitudinal side section of the device housing, and the second base plate is slidable on the slide rail.

[0050] In one embodiment, the second base plate comprises several sub-plates distributed along the transverse direction. A third seal is provided between each pair of adjacent sub-plates, and the two adjacent sub-plates are in contact with each other via this third seal.

[0051] In one embodiment, the bottom component further comprises a lower side support which is located on a transverse side of the slide rail and is connected to the slide rail.

[0052] In one embodiment, the bridge cover further comprises a connecting plate. The connecting plate includes a first plate section and a second plate section. An enclosed angle exists between the first plate section and the second plate section. The first plate section is connected to the sliding rail, and the second plate section is connected to the lower side support.

[0053] In one embodiment, the lower side support is connected to the second plate section via a connecting bolt. The lower side support is further equipped with an anti-rotation element designed to prevent the connecting bolt from rotating.

[0054] In one embodiment, the bridge cover further comprises a fourth seal designed to seal a gap between the lower side support and the second base plate.

[0055] In one embodiment, the bridge cover further comprises a second locking element designed to fasten the second base plate to the lower side support.

[0056] In one embodiment, the second locking element comprises a locking pin and a locking tube receptacle, wherein the locking tube receptacle is attached to the second base plate and the locking pin is mounted in the locking tube receptacle and is movable relative to the locking tube receptacle, and / or the second locking element comprises a locking bolt, a locking block and a locking cable, a head section of the locking bolt has a locking hole extending in a radial direction of the head section of the locking bolt, the locking block is attached and the locking cable passes through the locking hole and is connected to the locking block.

[0057] In one embodiment, the bridge cover further comprises a pressure component designed to press the second base plate firmly in a vertical direction.

[0058] In one embodiment, the pressure component has a pressure roller attached to the slide rail. The second base plate is provided with a projecting section, and the pressure roller abuts this projecting section in a vertical direction.

[0059] In one embodiment, each side component is rotatably attached to the base component, or each side component is designed to be rotatably attached to the base frame.

[0060] In one embodiment, the bridge cover further comprises a fifth seal designed to seal between each side component and the bottom component, the device housing and the substructure.

[0061] In one embodiment, each side component is provided with a second locking element, and the base is provided with a second locking cooperation element. The second locking element and the second locking cooperation element are configured to interact in order to lock or unlock the side component. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic structural view of an underfloor equipment system of a rail vehicle according to a specific embodiment of the prior art. Fig. Figure 2 is a schematic cross-sectional view of a railway vehicle according to the present application. Fig. Figure 3 is a partial structural view of an integrated underground equipment system according to the present application, Fig. Figure 4 is a structural view showing the connection between a frame, a first base plate and a first maintenance hatch. Fig. 5 is a schematic structural view of the in Fig. 4 skeletons shown, Fig. Figure 6 is an enlarged view of part A from Fig. 5, Fig. 7 is a schematic structural view of the in Fig. 4 first base plate shown, Fig. 8 is a sectional view along a line BB in Fig. 7, Fig. 9 is a section view along a line CC in Fig. 7, Fig. 10 is a schematic structural view of the in Fig. 4 first maintenance hatch shown, Fig. Figure 11 is a schematic structural view of a first base plate that is integrated with a first maintenance hatch. Fig. 12 is a schematic structural view of the in Fig. 11 first maintenance hatch shown, Fig. 13 is a schematic structural view of a Fig. 11 shown sliding guide section, Fig. Figure 14 is a view showing the relative position of the underfloor equipment system and a base frame. Fig. 15 is an enlarged view of part D from Fig. 14, Fig. 16 is a schematic structural view of a variant of the in Fig. 15 shown solution, Fig. Figure 17 is a schematic structural view showing an air inlet solution of a functional device unit. Fig. Figure 18 is a schematic structural view showing another air inlet solution of the functional device unit, Fig. 19 is a schematic view of a bridge cover according to a specific embodiment, Fig. 20 is a schematic structural view showing the connection between the first base plate and one in Fig. The soil component shown in 19 indicates Fig. 21 is a schematic structural view of a variant of the in Fig. 20 shown solutions, Fig. 22 is a cross-sectional view of Fig. 19, Fig. 23 is an enlarged view of part E from Fig. 22, Fig. 24 is an enlarged view of part F from Fig. 22, Fig. 25 is a structural view showing the connection between a slide rail and a lower side support, Fig. Figure 26 is a structural view showing the connection between a connecting plate and an anti-rotation element. Fig. Figure 27 is a schematic structural view of a second locking element according to a specific embodiment, Fig. 28 is a schematic structural view showing the connection between a second base plate and the lower side support via the in Fig. The second locking element shown in 27 indicates Fig. Figure 29 is a schematic view of a second bridge according to a further specific embodiment and Fig. 30 is a schematic structural view showing the connection between the second base plate and the lower side support via the in Fig. The second locking element shown is depicted in 29. Reference symbols in FIG. 1: 01 Underfloor device system, 011 functional device unit, 011a Device housing, 012 Device compartment, 02 Base frame. 011b Housing flap, 012a Compartment flap, Reference numerals in the Fig. 2 to 30: 1 Vehicle body system, 11 Base frame, 112 Undercarriage side supports, 2a Underfloor outer contour surface, 2a-2 second outer contour surface, 211 Device housings, 211a first maintenance hatch, 211a-2 first locking element, 211a-4 first vent opening, 211a-6 Slider, 211b-1 transverse side frame, 211b-1b Transition side support, 211b-2 upper frame, 211b-4 Connection establishment, 211c first base plate, 211c-1a Sliding guide section, 1a Vehicle body outer contour surface, 111 Connecting element, 2 underground equipment systems, 2a-1 first outer contour surface, 21 functional device unit, 211-1 Transitional Chamber, 211a-1 first seal, 211a-3 second seal, 211a-5 second hinge tube, 211b Skeleton, 211b-1a upper side support, 211b-1c Locking cooperation hole, 211b-3 longitudinal side frame, 211b-5 first recording, 211c-1 Floor wall, 211c-1b Sliding groove, 211c-1c Countersunk nut, 211c-2a second recording, 211c-3 longitudinal side wall, 211d Maintenance opening, 211e-1 Partition wall, 22 Bridge covers, 221a Sliding rail, 221a-1a Sliding intervention section, 221b second base plate, 221b-2 third seal, 221c lower side support, 221c-1a Access slot, 222a fifth seal, 224 Connecting plate, 224b second plate section, 226 fourth seal, 227a Locking pin, 227a-2 Handle section, 227b-1 groove-shaped rail, 227c-1 Locking hole, 227e Locking cable, 227g locking plate holder, 228a Pressure roller, 211c-2 transverse side wall, 211c-2b first hinge tube, 211c-3a Mounting opening, 211e Cover plate, 211e-1a second vent opening, 221 Soil component, 221a-1 horizontal plate section, 221a-2 vertical plate section, 221b-1 Subplate, 221b-3 Leading section, 221c-1 Anti-rotation element, 222 page component, 222b third locking element, 224a first plate section, 225 connecting bolts, 227 second locking element, 227a-1 Pen section, 227b Locking tube receptacle, 227c Locking bolt, 227d Locking block, 227f Locking nut, 228 Printing component, First chamber, II second chamber, III. Outdoor space. DETAILED DESCRIPTION OF THE EXECUTION FORMS

[0062] In order to enable the person skilled in the art to better understand the technical solutions of the present application, the present application is described in more detail below with reference to drawings and specific embodiments.

[0063] In the embodiments of the present application, terms such as "first(s)," "second(s)," "third(s)," "fourth(s)," and "fifth(s)" serve only a descriptive purpose and are not to be interpreted as indicating or implying a relative meaning or implicitly indicating the number of technical features referred to. Therefore, the feature defined by the terms "first(s)," "second(s)," "third(s)," "fourth(s)," "fifth(s)," and the like may explicitly or implicitly comprise one or more such features.

[0064] In the description of the embodiments of the present application, it should be noted that, unless explicitly stated or defined otherwise, the terms "attached to", "connected to", "attached to", and the like are to be understood in a broad sense. The connection may, for example, be detachable or non-detachable, and may be direct or indirect via an intermediate element.

[0065] The directional terms used in the embodiments of the present application, such as "longitudinal," "transverse," "vertical," "inside," and "outside," are based on orientations and positional relationships with respect to a rail vehicle. The "longitudinal direction" refers to a direction of movement of the rail vehicle, which is also a longitudinal direction. The "transverse direction" refers to a width direction of the rail vehicle and is perpendicular to the "longitudinal direction." The "vertical direction" refers to a height direction of the rail vehicle and is also the upward and downward direction.

[0066] In the description of the embodiments of the present application, the term "several" refers to two or more unless otherwise specified. The use of the term "several" to describe the number of some components does not restrict the numerical relationship between these components.

[0067] In the description of embodiments of the present application, the terms "have," "comprise," or other variants are intended to cover a non-exclusive inclusion, such that a process, method, object, or device with a series of elements includes not only the listed elements but also other elements not expressly listed, or even inherent elements of the process, method, object, or device. Without further limitations, an element defined by the phrase "comprises a..." does not preclude the possibility that there is another identical element in the process, method, object, or device with the described element.

[0068] In the embodiments of the present application, the term "and / or" describes only correlation relationships between correlated objects and indicates that there can be three correlation relationships. For example, the expression "A and / or B" denotes three cases: that only A is present, that A and B are present simultaneously, and that only B is present. Furthermore, the symbol " / " generally denotes an "or" relationship between the associated objects before and after this symbol.

[0069] It will be on Fig. 2 referenced, which is a simple schematic cross-sectional view of a railway vehicle according to the present application.

[0070] As in Fig. As shown in Figure 2, the present application provides a rail vehicle comprising a vehicle body system 1 and an underfloor equipment system 2.

[0071] The vehicle body system 1 mainly comprises an underframe and carriages that form the superstructure of the rail vehicle. The vehicle body system 1 has an outer body contour surface 1a (shown in bold in the figure). The underfloor equipment system 2 is located below the vehicle body system 1 and is designed to accommodate a functional equipment unit of the rail vehicle, such as an inverter, an air conditioning unit, an underfloor water tank, a wastewater tank, a battery box, etc. The underfloor equipment system 2 has an outer underfloor contour surface 2a (shown in bold in the figure).

[0072] The vehicle body outer contour surface 1a and the underfloor outer contour surface 2a together form an outer contour of the rail vehicle. In practice, the vehicle body outer contour surface 1a and the underfloor outer contour surface 2a are both designed to conform to each other, so that the outer contour of the rail vehicle can be optimized to improve the smoothness of the rail vehicle's running and thereby reduce air resistance during the rail vehicle's movement.

[0073] The specific shapes of the vehicle body outer contour surface 1a and the underfloor outer contour surface 2a are not restricted. In specific applications, their shapes can be determined by a person skilled in the art based on the actual requirements and simulation tests. In general, the vehicle body outer contour surface 1a and the underfloor outer contour surface 2a should be designed to be as streamlined as possible, while adhering to the height and width restrictions, in order to significantly reduce the air resistance of the rail vehicle during movement and the wear and tear on the rail vehicle.

[0074] As described in the background section, a prior art underfloor device system comprises a functional device unit and a device compartment. The functional device unit has its own housing. The device compartment can cover and shield the functional device unit, and an outer wall surface of the device compartment forms part of an underfloor outer contour surface.

[0075] In this solution, the underfloor equipment system 2 actually has two housings: the equipment compartment and the equipment housing, resulting in a redundant structure. If a functional element within the functional equipment unit needs repair, the equipment compartment and the equipment housing must be opened sequentially, negatively impacting maintenance efficiency. Furthermore, creating sufficient space to open a maintenance hatch on the equipment housing requires wasting space in both the equipment compartment and the functional equipment unit, both vertically and transversely, leading to reduced efficiency of the underfloor space.

[0076] In light of this, the present application provides an integrated underfloor device system that integrates the functional device unit and the device compartment from the prior art into a single unit. The device housing of the functional device unit is designed to directly form part of the underfloor outer contour surface 2a. A bridge cover is provided longitudinally on one side or on two sides of the functional device unit to cover an underfloor area not occupied by the functional device unit. An outer wall surface of the bridge cover can also be designed to directly form another part of the underfloor outer contour surface 2a.

[0077] This solution eliminates the equipment compartment from the prior art, thereby reducing the number of components and thus decreasing the redundancy of the underfloor equipment system 2. According to tests on a specific vehicle model, the number of underfloor components is reduced by 15% with the solution in the embodiment of the present application, which represents a significant reduction. Furthermore, reducing the number of underfloor components increases the available underfloor space, which facilitates the arrangement of the functional element. Additionally, the reduction in underfloor components makes the rail vehicle lighter, thus meeting the requirements for a lightweight vehicle design.

[0078] When maintenance is required, a worker simply needs to open the equipment housing to repair the relevant functional element, increasing maintenance efficiency. Since there is only one housing, the equipment housing, the worker does not need to penetrate deep into the underground equipment system to access the functional element, but can perform the maintenance work in a large space, further improving ease of maintenance.

[0079] It will be directed to the Fig. 3 to 18 referred. Fig. Figure 3 is a partial structural view of an integrated underground equipment system according to the present application. Fig. Figure 4 is a structural view showing the connection between a skeleton, a first base plate and a first maintenance hatch. Fig. 5 is a schematic structural view of the in Fig. 4 skeletons shown. Fig. Figure 6 is an enlarged view of part A from Fig. 5. Fig. 7 is a schematic structural view of the in Fig. 4 first base plate shown. Fig. 8 is a section view along a line BB from Fig. 7. Fig. 9 is a section view along a line CC from Fig. 7. Fig. 10 is a schematic structural view of the in Fig. 4 first maintenance hatch shown. Fig. Figure 11 is a schematic structural view of a first base plate that is integrated with a first maintenance hatch. Fig. 12 is a schematic structural view of the in Fig. 11 first maintenance hatch shown. Fig. 13 is a schematic structural view of a Fig. 11 shown sliding guide section. Fig. Figure 14 is a view showing the relative position of the underfloor equipment system and a base frame. Fig. 15 is an enlarged view of part D from Fig. 14. Fig. 16 is a schematic structural view of a variant of the in Fig. 15 shown solution. Fig. Figure 17 is a schematic structural view showing an air inlet solution of a functional device unit. Fig. Figure 18 is a schematic structural view showing another air inlet solution of the functional device unit.

[0080] As in Fig. As shown in Figure 3, the integrated underfloor equipment system according to the present application comprises a functional equipment unit 21 and a bridge cover 22. The functional equipment unit 21 comprises an equipment housing 211 and a functional element mounted inside the equipment housing 211. The type of functional element depends on the type of functional equipment unit and is not limited here. The equipment housing 211 is designed for connection with a substructure 11 to attach the functional equipment unit 21 to the floor of the vehicle body system 1. The bridge cover 22 is provided longitudinally on one side or on each of two sides of the functional equipment unit 21 and covers an area below the rail vehicle that is not occupied by the functional equipment unit 21.

[0081] The device housing 211 has a first outer contour surface 2a-1 and the bridge cover 22 has a second outer contour surface 2a-2. The first outer contour surface 2a-1 and the second outer contour surface 2a-2 together form the underfloor outer contour surface 2a.

[0082] The number of functional device units 21 is not limited in the embodiment of the present application. In specific applications, the number of functional device units 21 can be determined by the person skilled in the art based on the type of rail vehicle. In one example, there is only one functional device unit 21. Alternatively, several functional device units 21 can be present, distributed along the longitudinal direction and spaced apart from one another. The bridge cover 22 is arranged between each pair of adjacent functional device units 21.

[0083] The position of the functional device unit 21 is not restricted. In specific applications, the position of the functional device unit 21 can be determined by a person skilled in the art based on the functions of the functional device unit 21 and other factors. In one example, the functional device unit 21 is located at one longitudinal end of the underfloor device system 2. In this case, the first outer contour surface 2a-1 also forms part of an end contour of the underfloor device system 2. Alternatively, the functional device unit 21 can be arranged remotely from the longitudinal end of the underfloor device system 2. In this case, the bridge cover 22 can form part of the longitudinal end of the underfloor device system 2, and the second outer contour surface 2a-2 can form part of the end contour of the underfloor device system 2.

[0084] Part of the device housing 211 forms a first maintenance hatch 211a. An outer wall surface of the first maintenance hatch 211a can form part of the first outer contour surface 2a-1.

[0085] The first service hatch 211a has an open and a closed position. In the open position, the functional element can be directly exposed, which facilitates repair and maintenance of the functional element inside the device housing 211 by a worker. In the closed position, the first service hatch 211 isolates the functional element from an external environment to protect it.

[0086] In some embodiments, the first maintenance hatch 211a is located on a transverse side section of the device housing 211.

[0087] The first access panel 211a can be secured by removable fasteners, such as screws. This allows the first access panel 211a to be completely removed when it needs to be opened by loosening the fasteners, and then placed on the ground or other work platforms. When the first access panel 211a needs to be closed, it can be reattached using the removable fasteners.

[0088] Alternatively, the first maintenance access panel 211a can be rotatably mounted. In this embodiment, the first maintenance access panel 211a is held on the underfloor equipment system 2. When the first maintenance access panel 211a switches between the open and closed states, it does not need to be removed and reattached, thus improving maintenance efficiency. Furthermore, when the first maintenance access panel 211a switches to the open state, it does not need to be placed on the floor, which further reduces the space required for the associated components during maintenance work and thus increases ease of maintenance.

[0089] The device housing 211 comprises a frame 211b. In particular, the frame 211b is a structure formed from several supports. The frame 211b fulfills the strength requirements for the device housing 211, and the functional element described above can be mounted directly onto the frame 211b.

[0090] The device housing 211 can have various structural forms, which must be determined according to the actual usage requirements. In one embodiment shown in the drawings, as in the Fig. 4 and Fig. As shown in Figure 5, the framework 211b comprises two transverse side frames 211b-1, an upper frame 211b-2, and two longitudinal side frames 211b-3. The two transverse side frames 211b-1 are arranged opposite each other along the transverse direction, and the two longitudinal side frames 211b-3 are arranged opposite each other along the longitudinal direction. The upper sections of the two transverse side frames 211b-1 and the two longitudinal side frames 211b-3 are all connected to the upper frame 211b-2.

[0091] The device housing 211 further comprises a first base plate 211c, which is attached to the lower ends of the two transverse side frames 211b-1 and the two longitudinal side frames 211b-3 to cover an underside of the functional device unit 21. It is understood that in other embodiments, the frame 211b may comprise a base frame connected to the two transverse side frames 211b-1 and the two longitudinal side frames 211b-3, with the first base plate 211c attached to the base frame. This solution is also possible. In the embodiments of the present application, the first-mentioned solution, i.e., the solution without a base frame, is preferred. This facilitates weight reduction of the vehicle.

[0092] When the first base plate 211c is in place, a maintenance opening 211d is defined by the first base plate 211c and each of the transverse side frames 211b-1. The worker can repair the functional element via the maintenance opening 211d, and the first maintenance hatch 211a described above is designed to block or release the maintenance opening 211d.

[0093] The size of the first longitudinal maintenance hatch 211a can essentially correspond to the size of the functional device unit 21. This allows for a large maintenance opening 211d, thus providing a large area for maintenance. Alternatively, the first longitudinal maintenance hatch 211a can occupy only a portion of the functional device unit 21, which is also possible.

[0094] As in Fig. As shown in Figure 4, each transverse side frame 211b-1 comprises an upper side support 211b-1a and two transition side supports 211b-1b. The two transition side supports 211b-1b are spaced apart longitudinally. Two ends of each transverse side frame 211b-1b are connected to the upper side support 211b-1a and the first base plate 211c, respectively. The maintenance opening 211d is defined in particular by the upper side support 211b-1a, the first base plate 211c, and the two transition side supports 211b-1b. In the Fig. In the embodiment shown in Figure 4, the maintenance opening 211d is essentially rectangular. In other embodiments, the maintenance opening 211d may be trapezoidal or have other shapes.

[0095] The first maintenance hatch 211a is rotatably connected to the first base plate 211c. In this case, the first maintenance hatch 211a has a downward-folding design. It can be rotated downwards to move into the open position. This embodiment is shown in Fig. 4 shown. Alternatively, the first maintenance hatch 211a has an upward-folding design. In this case, the first maintenance hatch 211a is rotatably connected to the upper side support 211b-1a or, at another position, to an upper part of the device housing 211. The first maintenance hatch 211a can be rotated upwards to move into the open position. This embodiment is shown in Fig. 16 shown.

[0096] With regard to the Fig. In sections 7 to 9, the first base plate 211c comprises a base wall 211c-1, two transverse side walls 211c-2, and two longitudinal side walls 211c-3. The two transverse side walls 211c-2 are spaced apart along the transverse direction, and the inner wall surfaces of the two transverse side walls 211c-2 are each connected to the two transverse side frames 211b-1. The two longitudinal side walls 211c-3 are spaced apart along the longitudinal direction, and the inner wall surfaces of the two longitudinal side walls 211c-3 are each connected to the two longitudinal side frames 211b-3.

[0097] An outer wall surface of each transverse side wall 211c-2 is provided with a first hinge tube 211c-2b. With reference to Fig. 10. An inner wall surface of the first access panel 211a is provided with a second hinge tube 211a-5. During assembly, a hinge shaft is also provided. The hinge shaft runs through the first hinge tube 211c-2b and the second hinge tube 211a-5 to rotatably connect the first access panel 211a to the first base plate 211c.

[0098] The rotatable connection between the first access panel 211a and the first base plate 211c can be implemented in various ways, as long as the functional requirements are met. In one example, either the first access panel 211a or the first base plate 211c is provided with an arc plate, and the other element is equipped with a hinge shaft. Through the interaction of the arc plate and the hinge shaft, the first access panel 211a can also be rotatably connected to the first base plate 211c. Alternatively, the rotatable connection between the first access panel 211a and the first base plate 211c can be implemented by means of a hinge.

[0099] As in Fig. As shown in Figure 10, the first maintenance hatch 211a is provided with a first seal 211a-1 that surrounds the maintenance opening 211d. When the first maintenance hatch 211a is in the closed position, it is in contact with the frame 211b and the first base plate 211c via the first seal 211a-1. The first seal 211a-1 can compensate for the manufacturing tolerance between the first maintenance hatch 211a and the frame 211b or the first base plate 211c, and effectively eliminate any gap between the first maintenance hatch 211a and the frame 211b or the first base plate 211c, thereby improving the sealing performance of the device housing 211 at the first maintenance hatch 211a.

[0100] With regard to the Fig. 6 and Fig. 8 A first receiving groove 211b-5 is formed on the upper side support 211b-1a and on the transition side supports 211b-1b, and a second receiving groove 211c-2a is formed on the transverse side wall 211c-2 of the first base plate 211c. When the first maintenance hatch 211a is in the closed position, the first seal 211a-1 is received in the first receiving groove 211b-5 and the second receiving groove 211c-2a, thereby effectively reducing the transverse dimension of the device housing 211 when the first maintenance hatch 211a is in the closed position. Furthermore, the first receiving groove 211b-5 and the second receiving groove 211c-2a limit a deformation area of ​​the first seal 211a-1, thereby reducing the probability that the first seal 211a-1 will deviate from the first maintenance hatch 211a.

[0101] The first maintenance hatch 211a is further provided with a first locking element 211a-2, and the device housing 211 is further provided with a first locking cooperation element. The first locking element 211a-2 and the first locking cooperation element are configured to interact in order to lock or unlock the first maintenance hatch 211a.

[0102] With this solution, the first maintenance hatch 211a does not need to interact with the vehicle body system 1 for securing, thus making the underfloor equipment system 2 more structurally independent. It becomes easier to eliminate the fit tolerance between the first locking element 211a-2 and the first locking cooperation element, thereby simplifying the assembly of the underfloor equipment system 2 on the vehicle body system 1.

[0103] The specific structural form and number of first locking elements 211a-2 and first locking cooperation elements are not limited here and can be designed by the person skilled in the art in the art according to the actual requirements in the specific application, as long as the usage requirements are met. In one example, the first locking cooperation element is a locking receptacle (not shown in the drawings) for interaction with the first locking element 211a-2. The locking receptacle can be attached to the device housing 211. In particular, the locking receptacle is attached to the frame 211 or to other components, and / or the locking receptacle is a locking cooperation hole 211b-1c provided on the device housing 211, as shown in Fig. 5 shown. The locking cooperation hole 211b-1c is specifically provided on the upper side support 211b-1a, and in this case the first locking cooperation element has a simple structural shape, which is advantageous for reducing the weight of the vehicle.

[0104] It is understood that the solution described above represents only a preferred solution among the embodiments of the present application, in which both the first locking element 211a-2 and the first locking cooperation element are arranged in the underfloor device system 2. It should not be interpreted as limiting the scope of application of the integrated underfloor device according to the present application. In specific applications, the first locking cooperation element may be arranged on the vehicle body system 1, which does not affect the locking function of the first maintenance hatch 211a.

[0105] With regard to the Fig. 3 and Fig. 4. Cover plates 221e are provided in areas of the frame 211b that are not occupied by the first base plate 211c and the first maintenance hatch 211a, i.e., on the upper frame 211b-2 and the longitudinal side frames 211b-3. The cover plates 221e cover the upper part and the longitudinal side sections of the functional device unit 21, thereby better insulating and protecting the functional element.

[0106] In other embodiments, such as in Fig. As shown in Figure 11, the first maintenance hatch 211a is located on the first base plate 211c.

[0107] The first base plate 211c has, in particular, a maintenance opening (not shown in the drawings) and is provided with a sliding guide section 211c-1a and a countersunk groove 211c-1c. The first maintenance hatch 211a is provided with a slide 211a-6. The slide 211a-6 is designed to slide along the sliding guide section 211c-1a to adjust the position of the first maintenance hatch 211a relative to the first base plate 211c.

[0108] When the slide 211a-6 slides into the countersunk groove 211c-1c, the first access panel 211a blocks the access opening. If maintenance work is required via the access opening, the first access panel 211a is first pushed upwards to allow the slide 211a-6 to exit the countersunk groove 211c-1c. The first access panel 211a is then moved along the sliding guide section 211c-1a to open the access opening.

[0109] The specific structural shape of the sliding guide section 211c-1a and the slide 211a-6 can be varied as long as the usage requirements are met. According to a solution shown in the drawings, as in Fig. 12 and Fig. As shown in Figure 13, the slide 211a-6 is a roller and the sliding guide section 211a-1a is a steel channel. A sliding groove 211c-1b is formed on one side wall of the steel channel, and the roller can slide in the sliding groove 211c-1b to adjust the position of the first maintenance hatch 211a relative to the first base plate 211c. Furthermore, the countersunk groove 211c-1c is connected to the sliding rail 211c-1b. Alternatively, the roller can slide directly into a space defined by the steel channel, which is also possible.

[0110] The first maintenance hatch 211a is further provided with a locking element designed to secure the first maintenance hatch 211a when the slide 211a-6 slides into the countersunk groove 211c-1c, in order to prevent the first maintenance hatch 211a from detaching from the vehicle via the maintenance opening during the movement of the rail vehicle. The specific structural form of the locking element is not limited here and can be determined by a person skilled in the art according to the actual requirements in specific applications. The locking element comprises, for example, a rotatable locking plate that can abut the side wall of the steel channel to secure the first maintenance hatch 211a.

[0111] In addition to the solution in which the first maintenance hatch 211a shifts relative to the first base plate 211c, another solution is also possible in which the first maintenance hatch 211a is rotatably attached to the first base plate 211c.

[0112] As in Fig. As shown in Figure 14, the underframe 11 of the vehicle body system 1 comprises a connecting element 111 and two underframe side members 112. The two underframe side members 112 are distributed opposite each other along the transverse direction. The connecting element 111 joins the two underframe side members 112 to integrate the underframe 11 into a single unit. The connecting element 111 is, in particular, an underframe cross member and a car floor. Alternatively, the connecting element 111 comprises only the car floor, in which case the thickness of the car floor can be adaptively increased.

[0113] The underfloor equipment system 2 further comprises a connection receptacle 211b-4, which is attached to the frame 211 or to the cover plate 211e. The connection receptacle 211b-4 is designed for connection with the connecting element 111 and / or the underframe side supports 112 in order to connect and attach the underfloor equipment system 2 to the vehicle body system 1.

[0114] When the first maintenance hatch 211a is in the closed position, it is in contact with the underframe side support 112. This effectively eliminates any gap between the first maintenance hatch 211a and the underframe side support 112, thereby reducing the likelihood of dust and other foreign matter from an external compartment III on the outside of the rail vehicle penetrating laterally into the underfloor equipment system 2. This ensures the cleanliness of the interior of the underfloor equipment system 2 and also improves the vehicle's aerodynamic performance.

[0115] As in Fig. As shown in Figure 15, the first maintenance hatch 211a is provided with a second seal 211a-3. The first maintenance hatch 211a is in contact with the underframe side support 211a, particularly via the second seal 211a-3. The second seal 211a-3 can deform to compensate for manufacturing tolerances between the first maintenance hatch 211a and the underframe side support 211a, and can improve the sealing performance.

[0116] It is understood that the mounting position of the second seal 211a-3 is related to the opening mode of the first maintenance hatch 211a and the deformation direction of the second seal 211a-3 under pressure.

[0117] In one embodiment, the second seal 211a-3 is compressed in the transverse direction. Such deformation under pressure results in the second seal 211a-3 being subject to less abrasion during use. A solution of this embodiment is described in Fig. Figure 15 shows that in this case, the first maintenance hatch 211a has a downward-folding design, and the second seal 211a-3 is attached transversely to an inner wall surface of the first maintenance hatch 211a. Alternatively, another solution of this embodiment is shown in Fig. Figure 16 shows that in this case the first maintenance hatch 211a has an upwardly hinged design, and the second seal 211a-3 is attached transversely to an outer wall surface of the first maintenance hatch 211a.

[0118] In another embodiment, the second seal 211a-3 is compressed vertically. In this case, the second seal 211a-3 can also be attached to the upper part of the first access panel 211a, which is also possible.

[0119] As in Fig. As shown in Figure 17, the first maintenance hatch 211a has a first vent opening 211a-4, and the first vent opening 211a-4 may be provided with a first filter element (not shown in the drawings). The first filter element may, in particular, be a filter screen. With this first vent opening 211a-4, the functional unit 21 can draw air from the outside space III at an outer surface of the underfloor unit system 2 in a transverse direction in order to dissipate heat from the functional unit by ventilation.

[0120] As in Fig. As shown in Figure 18, in actual use a first chamber I is formed between the device housing 211 and the base 11. The first chamber I is located, in particular, on a top side of the device housing 211, and air is also present in the first chamber I.

[0121] Based on this, the device housing 211 in the embodiment of the present application has an inner chamber (not shown in the drawings) and a transition chamber 211-1. The functional element is located in the inner chamber. A first opening is formed on an upper section of the device housing 211 and is connected to the transition chamber 211-1 and the first chamber I. The inner chamber is separated from the transition chamber 211-1 by a partition 211e-1, which is part of the cover plate 211e. The partition 211e-1 has a second vent opening 211e-1a, and a second filter element (not shown in the drawings) is provided at the second vent opening 211e-1a. The second filter element is, in particular, a filter screen. The first vent opening 211a-4 is connected to the transition chamber 211-1.In this way, the functional unit 21 can not only receive air from the outside space III on the outside of the underfloor unit system 2 in a transverse direction, but also air from the first chamber I, thereby improving the ventilation and heat dissipation performance.

[0122] A second chamber II is formed in the bridge cover 22, and air is also present in the second chamber II. A second opening is formed on a longitudinal side section of the device housing 211. This second opening is connected to the transition chamber 211-1 and the second chamber II. The second chamber II can also be connected to the first chamber I. In this case, the functional device unit 21 can also receive air from the second chamber II, which further improves the ventilation and heat dissipation performance.

[0123] It should be understood that the shape of the ventilation and heat dissipation structures can vary depending on the type of functional element within the functional unit 21. If the functional element within the functional unit 21 requires general heat dissipation, the functional unit 21 receives air from outside space III directly through the first vent 211a-4. If the functional element within the functional unit 21 requires significant heat dissipation, the functional unit 21 receives air through both the first vent 211a-4 and the second vent 211e-1a. If a functional element within the functional unit 21 requires only minimal heat dissipation, the functional element need not be located near either the first vent 211a-4 or the second vent 211e-1a.The air used for heat dissipation from other functional elements is sufficient to meet the basic heat dissipation requirements for this functional element. This means that, in practical application, the shape of the ventilation and heat dissipation structures of the device housing 211 can be adapted according to the type and mounting position of the device within the functional device unit 21 that requires heat dissipation.

[0124] It will be directed to the Fig. referred to 19 to 30. Fig. Figure 19 is a schematic view of a bridge cover according to a specific embodiment. Fig. 20 is a schematic structural view showing the connection between the first base plate and one in Fig. The soil component shown in section 19 is shown. Fig. 21 is a schematic structural view of a variant of the in Fig. 20 shown solutions. Fig. 22 is a cross-sectional view of Fig. 19. Fig. 23 is an enlarged view of part E from Fig. 22. Fig. 24 is an enlarged view of part F from Fig. 22. Fig. Figure 25 is a structural view showing the connection between a slide rail and a lower side support. Fig. Figure 26 is a structural view showing the connection between a connecting plate and an anti-rotation element. Fig. Figure 27 is a schematic structural view of a second locking element according to a specific embodiment. Fig. 28 is a schematic structural view showing the connection between a second base plate and the lower side support via the in Fig. The second locking element shown is depicted in section 27. Fig. Figure 29 is a schematic view of a second bridge according to a further specific embodiment. Fig. 30 is a schematic structural view showing the connection between the second base plate and the lower side support via the in Fig. The second locking element shown is depicted in 29.

[0125] As in Fig. As shown in Figure 19, the bridge cover 22 comprises a base component 221 and two side components 222. The two side components 222 are distributed along the transverse direction and spaced apart from each other.

[0126] The side components 222 and / or the bottom component 221 are connected to the device housing 211 to join the bridge cover 22 and the functional device unit 21 into a single unit. This improves the integration of the underfloor device system 2, facilitating the connection and assembly of the underfloor device system 2 and the vehicle body system 1. It should be understood that the bridge cover 22 may not be connected to the functional device unit 21. In this case, the bridge cover 22 is directly attached to the vehicle body system 1, and the bridge cover 22 may be in contact with the functional device unit 21 without being connected to it. For the sake of clarity, the following description uses the bridge cover 22 as an example of being connected to the functional device unit 21.

[0127] A mounting opening 211c-3a is formed on a longitudinal side section of the device housing 211. A connecting element, such as a bolt, is installed in the mounting opening 211c-3a and connected to the base component 221 to fasten the base component 221 to the device housing 211. With reference to Fig. 9 The mounting opening 211c-3a is formed on a longitudinal side wall 211c-3 of the first base plate 211c. Alternatively, the mounting opening 211c-3a can be formed at other positions on the device housing 211, for example on the cover plate 211e, which is attached to the longitudinal side frame 211b-3.

[0128] As in the Fig. 19 and Fig. As shown in Figure 20, the base component 221 comprises a sliding rail 221a and a second base plate 221b. The sliding rail 221a is attached to the longitudinal side section of the device housing 211, and the second base plate 221b is slidable on the sliding rail 221a. In this way, the relative position of the second base plate 221b and the sliding rail 221a can be easily adjusted. When the second base plate 221b slides outward in a transverse direction relative to the sliding rail 221a, an opening is created in the base component 221. A worker can enter the second chamber II within the bridge cover 22 through this opening to perform maintenance work on the interior of the bridge cover 22, on the lateral longitudinal section of the functional device unit 21, and on other associated areas.

[0129] As an alternative to the above-mentioned solution, as described in Fig. 21 shows the floor component 221 formed in one piece and attached as a whole to the first floor plate 211c, which is also possible.

[0130] To simplify the explanation, the following description of the embodiment of the present application is based on the solution in which the base component 221 comprises the slide rail 221a and the second base plate 221b.

[0131] Furthermore with reference to Fig. The sliding rail 221a comprises a horizontal plate section 221a-1 and a vertical plate section 221a-2, between which an enclosed angle exists. The vertical plate section 221a-2 is configured for connection with the first base plate 221c, and the horizontal plate section 221a-1 is provided with a sliding engagement section 221a-1a. A sliding cooperation section is configured to slide along the sliding engagement section 221a-1a to allow the second base plate 221b to be displaceable on the sliding rail 221a.

[0132] The sliding engagement section 221a-1a or the sliding cooperation section has a recess structure, and the other element has a projection structure. The recess structure and the projection structure guide each other in a sliding manner.

[0133] The bridge cover 22 further comprises a pressure component 228. To improve the integration of the device, the pressure component 228 can be mounted on the guide rail 221a or separately on the device housing 211. The pressure component 228 is designed to press firmly against the second base plate 221b in a vertical direction to reduce the relative displacement of the second base plate 221b and the guide rail 221a in a vertical direction during the movement of the rail vehicle, thereby improving the structural stability of the bridge cover 22.

[0134] The specific structural form of the present application 228 is not limited and can be designed by the person skilled in the art according to the specific requirements of concrete applications, as long as the usage requirements are met. In an example given in the Fig. 23 and Fig. As shown in Figure 24, the pressure component 228 comprises a pressure roller 228a. The pressure roller 228a is mounted on the slide rail 221a and is rotatable, thus reducing the resistance to sliding of the second base plate 221b and further reducing wear of the second base plate 221b during its assembly. Alternatively, the pressure component 228 is a boundary structure in the form of a pressure block or other shapes.

[0135] During a specific assembly process, the mounting position of the pressure component 228 can be adjusted in a vertical direction to set a distance between the pressure component 228 and the second base plate 221b and thereby prevent excessive frictional resistance between the pressure component 228 and the second base plate 221b.

[0136] Furthermore, the second base plate 221b is provided with a projecting section 221b-3, and in particular, the pressure component 228 abuts the projecting section 221b-3 in a vertical direction. The projecting section 221b-3 helps to reduce the wear of the main structure of the second base plate 221b. In addition, the pressure component 228 can be positioned higher so that the projecting section 228 only contacts the projecting section 221b-3, thereby reducing the wear of other parts of the second base plate 221b. The specific structural shape of the projecting section 221b-3 is not restricted.

[0137] In a specific application, the vertical displacement of the second base plate 221b can be prevented by modifying the sliding cooperation structure between the slide rail 221a and the second base plate 221b. In one example, a sliding groove is formed on the slide rail 221a, and the second base plate 221b is slidable within the sliding groove. In this embodiment, a side wall of the sliding groove is designed to limit the movement of the second base plate 221b, thus preventing its vertical displacement.

[0138] The second base plate 221b can be formed in one piece.

[0139] Alternatively, the second base plate 221b comprises several sub-plates 221b-1, distributed along the transverse direction and easy to manufacture. With reference to Fig. 24 A third seal 221b-2 is provided between the adjacent sub-plates 221b-1. The adjacent sub-plates 221b-1 are in contact with each other via the third seal 221b-2 to improve the sealing performance.

[0140] In some embodiments, the base component 221 further comprises a lower side support 221c, which is located transversely on one side of the slide rail 221a and is connected to the slide rail 221a. Thus, the lower side support 221c and the slide rail 221a are combined to form a frame structure, which improves the structural strength of the bridge cover 22.

[0141] The specific connection method between the lower side support 221c and the slide rail 221a is not limited in the embodiment of the present application and can be adapted by the person skilled in the art according to the specific requirements in concrete applications, as long as the usage requirements are met.

[0142] As in the Fig. 25 and Fig. As shown in Figure 26, the bridge cover 22 further comprises a connecting plate 224. The connecting plate 224 includes a first plate section 224a and a second plate section 224b, between which there is an enclosed angle. The enclosed angle between the first plate section 224a and the second plate section 224b can specifically be 90 degrees. The first plate section 224a is connected to the guide rail 221a, and the second plate section 224b is connected to the lower side support 221c, thereby connecting and attaching the lower side support 221c and the guide rail 221a to each other.

[0143] In particular, the lower side support 221c and the second plate section 224b are connected via a connecting bolt 225. With reference to Fig. 26 The lower side support 221c is further provided with an anti-rotation element 221c-1, which has an engagement slot 221c-1a. A head section of the connecting bolt 225 can be inserted into the engagement slot 221c-1a to prevent rotation of the connecting bolt 225. Thus, when assembling the lower side support 221c and the second plate section 224b, only one nut needs to be tightened, which is more practical.

[0144] In the Fig. In the embodiment shown in Figure 26, the anti-rotation element 221c-1 is, in particular, a steel channel. Two side wall plates of the steel channel can effectively prevent the rotation of the connecting bolt 225. Alternatively, the anti-rotation element 221c-1 can be an anti-rotation plate, an anti-rotation rod, or other structural elements. The anti-rotation plate can interact with an outer wall surface of the head region of the connecting bolt 225 to prevent rotation of the connecting bolt 225, and the anti-rotation rod can be inserted radially into the head region of the connecting bolt 225 to prevent rotation of the connecting bolt 225.

[0145] In the event that the second base plate 221b is displaceable, the bridge cover 22 in this embodiment of the present application further comprises a second locking element 227. The second locking element 227 is designed to fasten the second base plate 221b to the lower side support 221c in order to fix the mounting position of the second base plate 221b under normal conditions. The specific structural form of the second locking element 227 is not limited and can be designed by a person skilled in the art according to the specific requirements of particular applications, as long as the usage requirements are met.

[0146] In one embodiment as described in the Fig. 27 and Fig. As shown in Figure 28, the second locking element 227 comprises a locking pin 227a and a locking tube receptacle 227b.

[0147] The locking tube receptacle 227b is attached to the second base plate 221b, and a groove-shaped rail 227b-1 is provided on one wall of the locking tube receptacle 227b. The locking pin 227a comprises a pin section 227a-1 and a handle section 227a-2. The pin section 227a-1 is inserted into the locking tube receptacle 227b. The handle section 227a-2 is connected to the pin section 227a-1 and is located in the groove-shaped rail 227b-1. The handle section 227a-2 is designed to move the pin section 227a-1. By adjusting the position of the handle section 227a-2 in the groove-shaped rail 227b-1, the second locking element 227 can lock or unlock the second base plate 221b.

[0148] In another embodiment, as described in the Fig. 29 and Fig. As shown in Figure 30, the second locking element 227 comprises a locking bolt 227c, a locking block 227d, a locking cable 227e, a locking nut 227f and a locking plate receptacle 227g.

[0149] The locking plate receptacle 227g is attached to the second base plate 221b, and the locking block 227d is attached to the locking plate receptacle 227g. A head section of the locking bolt 227c has a locking hole 227c-1 extending radially along the head section. The locking bolt 227c is configured to pass through the locking plate receptacle 227g and the lower side support 221c to engage with the locking nut 227f and secure the second base plate 221b to the lower side support 221c. The locking cable 227e passes through the locking hole 227c-1 and is designed to connect with the locking block 227d to secure the locking bolt 227c, thereby reducing the likelihood of the locking bolt 227c coming loose and falling out.In this solution, the second locking element 227 is a separate component, so no additional structural components are required on the second locking element 221b, which simplifies the structure of the second base plate 221b.

[0150] In one variant of the above embodiment, the locking plate receptacle 227g is omitted. In this case, the locking block 227d is attached directly to the second base plate 221b, and the locking bolt 227c passes directly through the second base plate 221b to connect the second base plate 221b to the lower side support 221c.

[0151] With regard to the Fig. 28 and Fig. 30 The bridge cover 22 further includes a fourth seal 226, which is designed to seal a gap between the lower side support 221c and the second base plate 221b in order to improve the sealing performance.

[0152] The side components 222 can be rigidly connected to the bottom component 221 to simplify the structural shape of the bridge cover 22.

[0153] Alternatively, the side components 222 can be rotatably connected to the base component 221, allowing them to switch between an open and a closed position, thus providing more service positions to facilitate maintenance work on the underfloor equipment system 2. Similar to the first service hatch 221 described above, each rotatable side component 222 can have an upward-folding or a downward-folding design. If the side component 222 has an upward-folding design, it is rotatably attached to the base frame 11. If the side component 222 has an upward-folding design, it is rotatably attached to the lower side support 221c. If there is no lower side support 221c, the side component 222 can be attached directly to the second base plate 221b.

[0154] The bridge cover 22 further features a fifth seal 222a, which is designed to seal between each side component 222 and the bottom component 221, the equipment housing 211, and the underframe 11. This reduces the likelihood of dust and other contaminants from the exterior space III entering the bridge cover 22, thus ensuring cleanliness inside the bridge cover 22 and also improving the vehicle's aerodynamic performance.

[0155] The first seal 211a-1, the second seal 211a-3, the third seal 221b-2, the fourth seal 226, and the fifth seal 222a can be of identical or different types and structures, which can be designed by a person skilled in the art according to the actual requirements, as long as the usage requirements are met. For example, these seals can be made of flexible and deformable materials such as rubber, latex, or resin.

[0156] The structural form of the bridge cover 22 differs from that of the device housing 211. The upper side support 211b-1a and the transition side supports 211b-1b of the device housing 211 are not provided in the bridge cover 22. Therefore, the bridge cover 22 has a simpler structural form and is thus lighter, which is advantageous for the lightweight construction of the vehicle. Under these conditions, the fifth seal 222a can be arranged longitudinally in a gap between the side component 222 and the device housing 211.

[0157] The fifth seal 222a between the second seal 222 and the base 11 can be arranged in a similar manner to the second seal 211a-3 described above, which is not repeated here.

[0158] Each side component 222 is further provided with a third locking element 222b, and the base frame 11 is provided with a second locking cooperation element. The third locking element 222b and the second locking cooperation element are configured to work together to lock or unlock the side component 222.

[0159] The structural forms of the third locking element 222b and the second locking cooperation element may be similar to those of the first locking element 211a-2 and the first locking cooperation element described above, which is not repeated here.

[0160] In some embodiments, the base component 221 is provided with a second maintenance hatch, and the inside of the underfloor equipment system can be repaired at the bridge cover 22. The specific fastening method of the second maintenance hatch can be designed in accordance with the first maintenance hatch 221a of the first base plate 221c, which is not repeated here.

[0161] The embodiments described above are only preferred embodiments of the present application. It should be noted that numerous modifications and improvements can be made by a person skilled in the art without departing from the principle of the present application, and it is assumed that these modifications and improvements also fall within the scope of protection of the present application. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CH 202310800954

[0001] Cited non-patent literature

[0000] BRIDGE COVER APPLIED TO A COMBINED UNDERRIDE EQUIPMENT SYSTEM” and No. 2023108057365 entitled “COMBINED UNDERRIDE EQUIPMENT SYSTEM AND RAIL VEHICLE”, which was issued on June 30, 2023

[0001]

Claims

[1] Integrated underfloor equipment system designed for mounting on a vehicle body system (1) of a rail vehicle, wherein the vehicle body system (1) comprises a chassis (11) and has a vehicle body outer contour surface (1a) and the integrated underfloor equipment system comprises: at least one functional device unit (21), a bridge cover (22), wherein the functional device unit (21) comprises a device housing (211) and a functional element mounted inside the device housing (211), wherein the device housing (211) is designed for connection with the base frame (11) and has a first outer contour surface (2a-1) and the device housing (211) has a first maintenance flap (211a), wherein the bridge cover (22) is provided longitudinally on one side or on two sides of the functional device unit (21) and is connected to the device housing (211), wherein the bridge cover (22) has a second outer contour surface (2a-2) and the first outer contour surface (2a-1), the second outer contour surface (2a-2) and the vehicle body outer contour surface (1a) together form an outer contour of the rail vehicle. [2] Integrated underground device system according to claim 1, wherein the first maintenance flap (211a) is located on a transverse side section of the device housing (211) and is rotatable. [3] Integrated underground equipment system according to claim 2, wherein the first maintenance hatch (211a) has an upwardly hinged or a downwardly hinged construction. [4] Integrated underfloor device system according to claim 2, wherein the device housing (211) comprises a frame (211b) and a first base plate (211c), wherein the frame (211b) comprises two transverse side frames (211b-1) distributed opposite each other along a transverse direction and connected to the first base plate (211c), wherein a maintenance opening (211d) is defined by the first base plate (211c) and the two transverse side frames (211b-1) and the first maintenance flap (211a) is designed to block the maintenance opening (211d). [5] Integrated underground device system according to claim 4, further comprising a first seal (211a-1) surrounding the maintenance opening (211d) and attached to the first maintenance flap (211a). [6] Integrated underfloor equipment system according to claim 4, wherein the frame (211b) further comprises an upper frame (211b-2) and two longitudinal side frames (211b-3), wherein the two longitudinal side frames (211b-3) are distributed opposite each other along a longitudinal direction and the two transverse side frames (211b-1) and the two longitudinal side frames (211b-3) are all connected to the upper frame (211b-2) and the first base plate (211c). [7] Integrated underfloor device system according to claim 1, wherein the device housing (211) comprises a first base plate (211c) and the first maintenance hatch (211a) is arranged on the first base plate (211c). [8] Integrated underground device system according to claim 7, wherein the first base plate (211c) has a maintenance opening, the first base plate (211c) has a sliding guide section (211c-1a) and forms a countersunk groove (211c-1c), the first maintenance flap (211a) is provided with a slide (211a-6) and the slide (211a-6) is designed such that it slides along the sliding guide section (211c-1a) to adjust a position of the first maintenance flap (211a) relative to the first base plate (211c), and the first maintenance flap (211a) is designed to block the maintenance opening when the sliding guide section (211c-1a) slides into the countersunk groove (211c-1c). [9] Integrated underground device system according to claim 1, wherein the underframe (11) comprises two underframe side supports (112) which are distributed opposite each other along the transverse direction, and a connecting element (111) which connects the two underframe side supports (112), and the functional device unit (21) is provided with several connection receptacles (211b-4) and at least a part of the connection receptacles (211b-4) is designed for connection with the connecting element (111). [10] Integrated underfloor device system according to claim 1, wherein the first maintenance hatch (211a) is provided with a first locking element (211a-2), the device housing (211) is provided with a first locking cooperation element, and the first locking element (211a-2) and the first locking cooperation element are configured to cooperate in order to lock or unlock the first maintenance hatch (211a). [11] Integrated underground device system according to claim 10, wherein the first locking cooperation element is a locking cooperation hole (211b-1c) formed on the device housing (211). [12] Integrated underground device system according to claim 1, wherein the underframe (11) comprises two underframe side supports (112) which are distributed opposite each other along the transverse direction, and a connecting element (111) which connects the two underframe side supports (112), and in a closed state the first maintenance hatch (211a) is in contact with the underframe side supports (112). [13] Integrated underfloor equipment system according to claim 12, wherein the first maintenance hatch (211a) is provided with a second seal (211a-3) and the first maintenance hatch (211a) is in contact with the underframe side supports (112) via the second seal (211a-3). [14] Integrated underground device system according to claim 1, wherein the first maintenance flap (211a) has a first vent opening (211a-4) and the first vent opening (211a-4) has a first filter element. [15] Integrated underground device system according to claim 14, wherein a first chamber (I) is formed between the device housing (211) and the base (11), the device housing (211) has an inner chamber and a transition chamber (211-1) and the functional element is located inside the inner chamber, a first opening is formed on an upper section of the device housing (211) and is connected to the transition chamber (211-1) and the first chamber (I) and the inner chamber and the transition chamber (211-1) are separated from each other by a partition (211e-1), the partition (211e-1) has a second vent opening (211e-1a), the second vent opening (211e-1a) is provided with a second filter element and the first vent opening (211a-4) is connected to the transition chamber (211-1). [16] Integrated underground device system according to claim 15, wherein a second chamber (II) is formed within the bridge cover (22), a second opening is provided on a longitudinal side section of the device housing (211), the second opening is connected to the transition chamber (211-1) and the second chamber (II), and the second chamber (II) is connected to the first chamber (I). [17] Integrated underground device system according to claim 1, wherein several functional device units (21) are provided, which are distributed along the longitudinal direction and spaced apart from each other, and the bridge cover (22) is arranged between two adjacent functional device units (21). [18] Integrated underground device system according to any one of claims 1 to 17, wherein the bridge cover (22) comprises a bottom component (221) and two side components (222), the two side components (222) being distributed along a transverse direction and spaced apart from each other, and the side components (222) and / or the bottom component (221) being connected to the device housing (211). [19] Integrated underfloor device system according to claim 18, wherein a fastening opening (211c-3a) is formed on a longitudinal side section of the device housing (211) and extends in a transverse direction and the floor component (221) is fastened to the device housing (211) through the fastening opening (211c-3a). [20] Integrated underfloor device system according to claim 19, wherein the floor component (221) comprises a slide rail (221a) and a second floor plate (221b), the slide rail (221a) being attached to the longitudinal side section of the device housing (211) and the second floor plate (221b) being slidable on the slide rail (221a). [21] Integrated underground device system according to claim 20, wherein the second base plate (221b) comprises several sub-plates (221b-1) distributed along the transverse direction, a third seal (221b-2) is provided between each pair of adjacent sub-plates (221b-1) and the two adjacent sub-plates (221b-1) are in contact with each other via the third seal (221b-2). [22] Integrated underfloor device system according to claim 20, wherein the floor component (221) further comprises a lower side support (221c) located on a transverse side of the slide rail (221a) and connected to the slide rail (221a). [23] Integrated underfloor device system according to claim 22, further comprising a connecting plate (224), wherein the connecting plate (224) comprises a first plate section (224a) and a second plate section (224b), wherein there is an enclosed angle between the first plate section (224a) and the second plate section (224b), the first plate section (224a) is connected to the slide rail (221a) and the second plate section (224b) is connected to the lower side support (221c). [24] Integrated underfloor device system according to claim 23, wherein the lower side support (221c) is connected to the second plate section (224b) via a connecting bolt (225) and the lower side support (221c) is further provided with an anti-rotation element (221c-1) designed to prevent rotation of the connecting bolt (225). [25] Integrated underfloor device system according to claim 22, further comprising a fourth seal (226) designed to seal a gap between the lower side support (221c) and the second base plate (221b). [26] Integrated underfloor device system according to claim 22, further comprising a second locking element (227) designed to fasten the second base plate (221b) to the lower side support (221c). [27] Integrated underground device system according to claim 26, wherein the second locking element (227) comprises a locking pin (227a) and a locking tube receptacle (227b), the locking tube receptacle (227b) being attached to the second base plate (221b) and the locking pin (227a) being installed in the locking tube receptacle (227b) and being movable relative to the locking tube receptacle (227b) and / or the second locking element (227) comprises a locking bolt (227c), a locking block (227d) and a locking cable (227e), a head section of the locking bolt (227c) has a locking hole (227c-1) extending in a radial direction of the head section of the locking bolt (227c), the locking block (227d) is attached and the locking cable (227e) passes through the locking hole (227c-1) and is connected to the locking block (227d). [28] Integrated underfloor device system according to claim 20, further comprising a pressure component (228) configured to press the second base plate (221b) firmly in a vertical direction. [29] Integrated underfloor device system according to claim 28, wherein the pressure component (228) has a pressure roller (228a) which is attached to the slide rail (221a), the second base plate (221b) is provided with a projection section (221b-3) and the pressure roller (228a) abuts the projection section (221b-3) in a vertical direction. [30] Integrated underfloor device system according to claim 18, wherein each side component (222) is rotatably attached to the floor component (221) or each side component (222) is rotatably attached to the base frame (11). [31] Integrated underfloor device system according to claim 30, further comprising a fifth seal (222a) configured to seal a gap between each side component (222) and the bottom component (221), the device housing (211) and the base frame (11). [32] Integrated underfloor device system according to claim 30, wherein each side component (222) is provided with a third locking element (222b), the underframe (11) is provided with a second locking cooperation element, and the third locking element (222b) and the second locking cooperation element are configured to cooperate in order to lock or unlock the side component (222). [33] Integrated underground equipment system according to claim 18, wherein the floor component (221) is provided with a second maintenance hatch. [34] Rail vehicle comprising the following: a vehicle body system (1) and the integrated underground device system (2) according to one of claims 1 to 33. [35] Bridge cover used in an integrated underground equipment system, comprising the following: a soil component (221) and two side components (222) the integrated underfloor device system comprises a functional device unit (21), the functional device unit (21) comprises a device housing (211) and the device housing (211) has a first outer contour surface (2a-1), the bridge cover (22) is provided in the longitudinal direction on one side or on two sides of the functional device unit (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) together form an underfloor outer contour surface (2a) of a rail vehicle and the two side components (222) are distributed along a transverse direction and spaced apart from each other, and the two side components (222) and / or the bottom component (221) are designed for connection with the device housing (211). [36] Bridge cover used in the integrated underground device system according to claim 35, wherein the floor component (221) comprises a slide rail (221a) and a second floor plate (221b), the slide rail (221a) being designed for attachment to a longitudinal side section of the device housing (211) and the second floor plate (221b) being slidable on the slide rail (221a). [37] Bridge cover used in the integrated underground device system according to claim 36, wherein the second base plate (221b) comprises several sub-plates (221b-1) distributed along the transverse direction, a third seal (221b-2) is provided between each pair of adjacent sub-plates (221b-1) and the two adjacent sub-plates (221b-1) are in contact with each other via the third seal (221b-2). [38] Bridge cover used in the integrated underfloor equipment system according to claim 36, wherein the floor component (221) further comprises a lower side support (221c) located on a transverse side of the slide rail (221a) and connected to the slide rail (221a). [39] Bridge cover used in the integrated underfloor device system according to claim 38 and further comprising a connecting plate (224), wherein the connecting plate (224) comprises a first plate section (224a) and a second plate section (224b), wherein there is an enclosed angle between the first plate section (224a) and the second plate section (224b), the first plate section (224a) is connected to the slide rail (221a) and the second plate section (224b) is connected to the lower side support (221c). [40] Bridge cover used in the integrated underfloor equipment system according to claim 39, wherein the lower side support (221c) is connected to the second plate section (224b) via a connecting bolt (225) and the lower side support (221c) is further provided with an anti-rotation element (221c-1) designed to prevent rotation of the connecting bolt (225). [41] Bridge cover used in the integrated underground equipment system according to claim 38 and further comprising a fourth seal (226) designed to seal a gap between the lower side support (221c) and the second base plate (221b). [42] Bridge cover used in the integrated underfloor equipment system according to claim 38 and further comprising a second locking element (227) designed to secure the second base plate (221b) to the lower side support (221c). [43] Bridge cover applied in the integrated underground device system according to claim 42, wherein the second locking element (227) comprises a locking pin (227a) and a locking tube receptacle (227b), the locking tube receptacle (227b) being attached to the second base plate (221b) and the locking pin (227a) being installed in the locking tube receptacle (227b) and being movable relative to the locking tube receptacle (227b) and / or the second locking element (227) comprises a locking bolt (227c), a locking block (227d) and a locking cable (227e), wherein a head section of the locking bolt (227c) has a locking hole (227c-1) extending in the radial direction of the head section of the locking bolt (227c), the locking block (227d) is attached and the locking cable (227e) passes through the locking hole (227c-1) and is connected to the locking block (227d). [44] Bridge cover used in the integrated underground equipment system according to claim 36, further comprising a pressure component (228) designed to press the second base plate (221b) firmly in a vertical direction. [45] Bridge cover used in the integrated underfloor device system according to claim 44, wherein the pressure component (228) comprises a pressure roller (228a) attached to the slide rail (221a), the second base plate (221b) is provided with a projection section (221b-3) and the pressure roller (228a) abuts the projection section (221b-3) in a vertical direction. [46] Bridge cover used in the integrated underfloor equipment system (2) according to any one of claims 35 to 45, wherein each side component (222) is rotatably attached to the base component (221) or each side component (222) is designed to be rotatably attached to the underframe (11). [47] Bridge cover used in the integrated underground device system according to claim 46 and further comprising a fifth seal (222a) designed to seal between each side component (222) and the bottom component (221), the device housing (211) and the base frame (11). [48] ​​Bridge cover used in the integrated underfloor equipment system according to claim 46, wherein each side component (222) is provided with a third locking element (222b), the underframe (11) is provided with a second locking cooperation element, and the third locking element (222b) and the second locking cooperation element are designed to work together to lock or unlock the side component (222).

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