Internal frame and rail vehicle

Abstract

This invention relates to the field of rail vehicle technology, providing an interior frame and a rail vehicle. The interior frame includes a frame body detachably connected to the vehicle body underframe. The frame body includes a top beam, two side beams connected to the top beam, and a bottom beam connected to the side beams. The top beam, side beams, and bottom beam enclose a receiving cavity. The frame body has a connecting structure on one side of the receiving cavity, suitable for the detachable installation of interior trim components. Through this method, the top beam, side beams, and bottom beam form a single installation unit and are detachably connected to the vehicle body underframe. The receiving cavity formed inside can be used to install interior trim components via the connecting structure. Thus, when interior upgrades are needed, pre-assembly can be completed under the vehicle, and then the entire unit can be connected to the vehicle body underframe. Upgrading and disassembling interior trim components is very convenient and efficient.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to an internal frame and rail vehicle. Background Technology

[0002] Currently, in rail vehicles, such as EMU trains, structural components such as interior walls and roof panels, as well as equipment such as seats, are still assembled on the train. The degree of pre-assembly under the train is very low. Complex installation interfaces can easily lead to conflicts between components and many pre- and post-assembly procedures. When the vehicle needs to be refurbished, there are many disassembly and repetitive procedures, resulting in very low efficiency for interior upgrades. Summary of the Invention

[0003] This invention provides an interior frame to solve the technical problem of low efficiency in vehicle interior upgrades in the prior art.

[0004] This invention also provides a rail vehicle.

[0005] This invention provides an interior frame, including: a frame body detachably connected to a vehicle chassis frame, the frame body including a top beam, two side beams connected to the top beam, and a bottom beam connected to the side beams, the top beam, the side beams and the bottom beam forming an accommodating cavity;

[0006] The frame body has a connecting structure on one side of the accommodating chamber, which is suitable for the detachable installation of vehicle interior parts.

[0007] According to an embodiment of the present invention, the bottom beam is provided with a guide groove and is connected to the vehicle body frame through a threaded connector.

[0008] According to an embodiment of the present invention, the guide groove includes a mounting groove and a snap-fit ​​groove connected to the mounting groove. The mounting groove is used to correspond to a first mating groove opened on the vehicle body chassis, and the snap-fit ​​groove is used to correspond to a second mating groove opened on the vehicle body chassis.

[0009] The cross-sectional dimension of the mounting groove near the connection point with the snap-fit ​​groove is larger than the cross-sectional dimension of the snap-fit ​​groove near the connection point with the mounting groove.

[0010] According to an embodiment of the present invention, the threaded connector is a T-bolt, and one end of the T-bolt thread head passes through the mounting groove and extends into the first mating groove on the vehicle body frame.

[0011] The head of the T-bolt is adapted to move from the mounting slot to the snap-fit ​​slot and to snap into the vehicle body frame at the second mating slot of the vehicle body frame. The shank of the T-bolt extends out of the snap-fit ​​slot and is adapted to engage with the shank by a lock nut to connect the bottom beam and the vehicle body frame.

[0012] According to an embodiment of the present invention, the bottom beam is provided with an elastic support seat on the side facing the accommodating cavity, and the elastic support seat is used to lay the interior floor plate of the vehicle body interior parts.

[0013] According to an embodiment of the present invention, the interior frame includes a first connector disposed on the side beam, the first connector being disposed toward the accommodating cavity, and the first connector being adapted to detachably install vehicle seats, luggage racks and side panels in the vehicle interior components;

[0014] The connection structure also includes a second connector disposed on the top beam, the second connector being disposed toward the accommodating chamber, and the second connector being adapted to detachably install the top plate in the vehicle interior trim.

[0015] According to an embodiment of the present invention, the first connector and the second connector are both sliding grooves, and the top beam and the side beam are connected to the sliding grooves by threaded connectors to detachably install the vehicle interior parts.

[0016] According to an embodiment of the present invention, the top beam and the side beam are provided with a plurality of riveting holes on the side opposite to the accommodating chamber, which are suitable for installing the outer skin.

[0017] According to an embodiment of the present invention, the outer skin includes an aerogel layer and two phenolic resin plant hemp fiber layers disposed on opposite sides of the aerogel layer.

[0018] This invention also provides a rail vehicle, comprising:

[0019] The vehicle body includes a vehicle body chassis and a vehicle body frame, wherein the vehicle body chassis and the vehicle body frame enclose a placement chamber;

[0020] The aforementioned internal frame is adapted to be placed in the placement chamber and detachably connected to the vehicle body chassis.

[0021] The interior frame provided in this embodiment of the invention consists of a top beam, side beams, and bottom beam forming an integrated installation unit, which is detachably connected to the vehicle chassis. The accommodating chamber formed inside can be used to install interior body parts through a connecting structure. Thus, when an interior upgrade is needed, it can be pre-assembled under the vehicle and then connected to the vehicle chassis as a whole. Upgrading and disassembling the interior body parts is very convenient and efficient.

[0022] The rail vehicle provided in this embodiment of the invention includes the aforementioned internal frame, and therefore has all the beneficial effects of an internal frame, which will not be elaborated here. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the cooperation structure between the vehicle body and the interior frame according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal skeleton structure according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the cooperation structure between the vehicle body chassis and the bottom beam in an embodiment of the present invention;

[0027] Figure 4 for Figure 2 The diagram shows a partial structural schematic of the top beam.

[0028] Figure 5 This is a schematic cross-sectional view of the outer skin according to an embodiment of the present invention.

[0029] Figure label:

[0030] 10. Frame body; 110. Top beam; 120. Side beam; 130. Bottom beam; 1310. Guide groove; 1320. Mounting groove; 1330. Snap-fit ​​groove; 1340. Threaded connector; 1350. Elastic support seat; 140. Accommodating chamber; 150. Connecting structure; 1510. First connector; 1520. Second connector; 160. Rivet hole; 170. Outer skin; 1710. Aerogel layer; 1720. Phenolic resin plant hemp fiber layer;

[0031] 20. Car body; 210. Car body underframe; 2110. First mating groove; 2120. Second mating groove; 220. Car body frame; 230. Placement chamber; 240. Internal frame. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0035] The following is combined with Figures 1-5 This invention describes the internal frame and rail vehicle according to embodiments of the present invention.

[0036] For rail vehicles, rail vehicles may include, but are not limited to, motor vehicles. Rail vehicles include a car body 20, which includes a car body underframe 210 and a car body frame 220. The car body underframe 210 and the car body frame 220 enclose a placement chamber 230. It also includes an internal frame 240, which can be integrally installed into the placement chamber 230 and detachably connected to the car body underframe 210.

[0037] The present invention provides a separate car body 20 and an internal frame 240, thus enabling two transportation modes: freight and passenger transport. For the placement chamber 230, when freight transport is required, it can be directly loaded with cargo, serving as a freight rail vehicle. When passenger transport is required, the interior trim can be installed on the internal frame 240 first, and then integrated into the car body frame 220, serving as a passenger rail vehicle. This provides convenience for car body upgrades and flexible use, and the disassembly, assembly, and maintenance of the interior trim can be carried out under the vehicle, improving the efficiency of interior trim upgrades. Thus, the switching between freight and passenger transport modes of the rail vehicle does not require any changes to the vehicle structure, making the car body more flexible in use.

[0038] Please refer to Figure 1 and Figure 2 For the interior frame 240, the interior frame 240 includes a frame body 10, which is detachably connected to the vehicle body frame 210. The frame body 10 includes a top beam 110, two side beams 120 connected to the top beam 110, and a bottom beam 130 connected to the side beams 120. The top beam 110, the side beams 120, and the bottom beam 130 enclose a receiving cavity 140. The frame body 10 has a connecting structure 150 on one side of the receiving cavity 140, which is suitable for detachably installing interior body parts.

[0039] It should be noted that the top beam 110, side beam 120, and bottom beam 130 are integrally formed or pre-welded as a whole structure. The side of the bottom beam 130 facing away from the accommodating chamber 140 is used for detachable connection with the vehicle body frame 210. The frame body 10 can be installed and removed through the detachable connection between the frame body 10 and the vehicle body frame 210.

[0040] Because the frame body 10 has a connecting structure 150 on the side facing the accommodating chamber 140, it is suitable for detachable installation of vehicle interior parts. Thus, when it is necessary to update the vehicle interior parts, the vehicle interior parts can be updated under the vehicle, and then the interior frame 240 placed in the original vehicle frame 220 can be removed and replaced with a new interior frame 240. This makes the update of vehicle interior parts more efficient.

[0041] Furthermore, because the interior trim parts are detachably connected to the connecting structure 150, the inspection and replacement of the interior trim parts are very convenient. Parts that do not need to be replaced can be retained, saving the cost of replacing all the interior trim parts.

[0042] In some embodiments of the present invention, a guide groove 1310 is provided on the bottom beam 130 and is connected to the vehicle body frame 210 through a threaded connector 1340.

[0043] That is, the frame body 10 can be pushed into the vehicle frame 220 first, and then the guide groove 1310 on the bottom beam 130 can be aligned with the groove of the vehicle chassis 210. Then, the bottom beam 130 and the vehicle chassis 210 can be connected by the threaded connector 1340. In this way, only one structure is needed between the vehicle frame and the vehicle body 20, and the installation and disassembly are very convenient.

[0044] Please continue to refer to Figure 2 and Figure 3 Specifically, the guide groove 1310 includes a mounting groove 1320 and a snap-fit ​​groove 1330 connected to the mounting groove 1320. The mounting groove 1320 is used to correspond to the first mating groove 2110 opened on the vehicle body frame 210, and the snap-fit ​​groove 1330 is used to correspond to the second mating groove 2120 opened on the vehicle body frame 210. The cross-sectional dimension of the mounting groove 1320 near the connection with the snap-fit ​​groove 1330 is larger than the cross-sectional dimension of the snap-fit ​​groove 1330 near the connection with the mounting groove 1320.

[0045] The guide groove 1310 is designed to prevent rotation, so that when the bottom beam 130 is connected to the chassis 210, the bottom beam 130 can be prevented from deflecting relative to the chassis 210.

[0046] Furthermore, configuring the guide groove 1310 as both the mounting groove 1320 and the snap-fit ​​groove 1330 is more conducive to installing the threaded connector 1340. For example, the mounting groove 1320 is in the corresponding mounting position, and the snap-fit ​​groove 1330 is in the corresponding snap-fit ​​position.

[0047] Furthermore, the threaded connector 1340 is a T-bolt. One end of the T-bolt's head passes through the mounting groove 1320 and extends into the first mating groove 2110 on the vehicle body underframe 210. The head of the T-bolt is adapted to move from the mounting groove 1320 to the snap-fit ​​groove 1330 and to snap-fit ​​with the vehicle body underframe 210 at the second mating groove 2120. The shank of the T-bolt extends out of the snap-fit ​​groove 1330 and is adapted to connect the bottom beam 130 and the vehicle body underframe 210 by engaging with the shank through a lock nut.

[0048] That is, the head of the T-bolt is sequentially inserted into the mounting groove 1320 and the first mating groove 2110, and then the T-bolt is pulled to the snap-fit ​​groove 1330 and the second mating groove 2120. Because the size of the T-bolt head is larger than the cross-sectional size of the first mating groove 2110 and the snap-fit ​​groove 1330, it will not detach from the side of the vehicle body underframe 210. Further, by using a lock nut in conjunction with the bolt, the vehicle body underframe 210 and the bottom beam 130 can be directly connected.

[0049] When the bottom beam 130 needs to be disassembled, the locking nut is exposed on one side of the accommodating chamber 140, which makes it easy for the staff to disassemble it, so that the frame body 10 and the vehicle body underframe 210 can be detachably connected.

[0050] As for the number and arrangement of the guide grooves 1310, multiple guide grooves 1310 can be set at intervals along the length of the bottom beam 130 and the lateral extension direction. The multiple guide grooves 1310 can be arranged in a matrix and correspond to the positions of the grooves on the vehicle body underframe 210.

[0051] Specifically, Figure 3 The diagram below shows a partial fit between the bottom beam 130 and the vehicle body frame 210. The vehicle body frame 210 is provided with multiple first mating grooves 2110, and the bottom beam 130 is provided with multiple guide grooves 1310 corresponding to the first mating grooves 2110. The specific number of first mating grooves 2110 and guide grooves 1310 is not limited here.

[0052] In some embodiments of the present invention, the bottom beam 130 is provided with an elastic support seat 1350 on the side facing the accommodating chamber 140, and the interior floor plate of the vehicle interior parts is laid on the upper part of the elastic support seat 1350.

[0053] Specifically, the elastic support seat 1350 is made of rubber and is used to absorb shock. The elastic support seat 1350 and the bottom beam 130 can also be connected by threaded connections or other connection methods such as bonding, which are not limited here.

[0054] Please refer to Figure 1 and Figure 4 In some embodiments of the present invention, the connecting structure 150 includes a first connector 1510 disposed on the side beam 120, the first connector 1510 being disposed toward the receiving chamber 140, and the first connector 1510 being adapted to detachably install the vehicle seat, luggage rack and side panel in the vehicle interior trim; the connecting structure 150 also includes a second connector 1520 disposed on the top beam 110, the second connector 1520 being disposed toward the receiving chamber 140, and the second connector 1520 being adapted to detachably install the top panel in the vehicle interior trim.

[0055] That is, the first connector 1510 and the second connector 1520 can be used to detachably install structures such as the roof panel, side panel, vehicle seats and luggage rack in the vehicle interior. The vehicle seats can be installed in a suspended manner, which is very convenient for disassembly and assembly and facilitates maintenance.

[0056] Specifically, both the first connector 1510 and the second connector 1520 are sliding grooves. The top beam 110 and the side beam 120 are first slidably connected to the interior trim of the vehicle body, and then the top beam 110 is connected to the roof plate and the side beam 120 is connected to the vehicle seat or luggage rack by bolts and other connectors.

[0057] The top beam 110 and the side beam 120 are provided with multiple grooves along their length extension direction, and the length extension direction of each groove is in the same direction as the length extension direction of the top beam 110 and the side beam 120.

[0058] In some embodiments of the present invention, the top beam 110 and the side beam 120 are provided with a plurality of riveting holes 160 on the side opposite to the accommodating chamber 140, which are suitable for installing the outer skin 170.

[0059] The outer skin 170 includes a portion on one side of the side beam 120 and a portion on one side of the top beam 110. The skin on the top beam 110 side and the skin on the side beam 120 side are connected by a butt-joint riveting method to ensure its sealing. In this way, the entire vehicle can achieve a secondary sealing effect, significantly improving sound insulation, heat insulation, and pressure fluctuation performance, while also reducing air conditioning energy consumption and playing a role in energy saving.

[0060] The skin adopts a three-layer structure. The middle layer is an aerogel layer 1710. On both sides of the aerogel layer 1710 are phenolic resin plant hemp fiber layers 1720. The aerogel layer 1710 is made of silica aerogel material with a thickness of 3-5mm. The upper and lower phenolic resin plant hemp fiber layers 1720 are made of phenolic resin plant hemp fiber cloth with a thickness of 0.5-2mm.

[0061] The aerogel layer 1710 material can be first molded into a plate. When the phenolic resin plant hemp fiber cloth is in a resin-flowing state, the aerogel layer 1710 is inserted into the fiber cloth. Then, it is integrally molded using a thermoforming tank to form skins with different curved surfaces. Because both the aerogel layer 1710 and the phenolic resin plant hemp fiber cloth are made of natural materials, the recyclability of the outer skin 170 can reach 100%, resulting in stronger environmental performance.

[0062] The top beam 110, side beam 120, and bottom beam 130 are made of T300 carbon fiber and are square and hollow. The interior has a connecting structure 150 to provide an installation interface for the interior body parts. The exterior has rivet holes 160 to provide an installation interface for the outer skin 170. After the outer skin 170 is installed, it forms the first layer of isolation space for the accommodating chamber 140 in the frame body 10, which plays a role in heat insulation and sound insulation. Then, when the inner frame 240 is installed into the car body frame 220, the car body frame 220 provides a second layer of isolation space. In this way, the rail vehicle achieves double-layer heat insulation and sound insulation.

[0063] In embodiments of the present invention, unless otherwise explicitly specified and limited, the first feature being "on" or "under" the second feature may be in direct contact with the first feature, or indirect contact between the first and second features through an intermediate medium.

[0064] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0066] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples, without contradiction.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An internal frame, characterized in that, Suitable for integral installation into a placement cavity formed by the vehicle body underframe and the vehicle body frame, the placement cavity is suitable for direct loading of goods for freight transport without the interior frame being installed, and the placement cavity is suitable for integral installation of the interior frame and the interior components into the vehicle body frame for passenger transport after the interior components are installed on the interior frame. The interior frame includes: The frame body is detachably connected to the vehicle body chassis. The frame body includes a top beam, two side beams connected to the top beam, and a bottom beam connected to the side beams. The top beam, the side beams, and the bottom beam enclose a receiving cavity. The top beam and the side beams are also provided with multiple riveting holes on the side away from the receiving cavity, which are suitable for installing the outer skin. The outer skin includes an aerogel layer and two phenolic resin plant hemp fiber layers on opposite sides of the aerogel layer. The frame body has a connecting structure on one side of the accommodating cavity, which is suitable for detachable installation of vehicle interior parts. The vehicle interior parts include an interior floor plate, vehicle seats, luggage racks, side panels, and a roof plate. When the vehicle interior parts need to be updated, the vehicle interior parts are updated under the vehicle, and then the interior frame placed inside the vehicle frame is removed and replaced with a new interior frame.

2. The internal frame according to claim 1, characterized in that, The bottom beam has a guide groove and is connected to the vehicle body frame through a threaded connector.

3. The internal frame according to claim 2, characterized in that, The guide groove includes an installation groove and a snap-fit ​​groove connected to the installation groove. The installation groove is used to correspond to a first mating groove opened on the vehicle body chassis, and the snap-fit ​​groove is used to correspond to a second mating groove opened on the vehicle body chassis. The cross-sectional dimension of the mounting groove near the connection point with the snap-fit ​​groove is larger than the cross-sectional dimension of the snap-fit ​​groove near the connection point with the mounting groove.

4. The internal frame according to claim 3, characterized in that, The threaded connector is a T-bolt, and one end of the T-bolt's threaded head passes through the mounting groove and extends into the first mating groove on the vehicle body frame; The head of the T-bolt is adapted to move from the mounting slot to the snap-fit ​​slot and to snap into the vehicle body frame at the second mating slot of the vehicle body frame. The shank of the T-bolt extends out of the snap-fit ​​slot and is adapted to engage with the shank by a lock nut to connect the bottom beam and the vehicle body frame.

5. The internal frame according to claim 1, characterized in that, The bottom beam is provided with an elastic support seat on the side facing the accommodating chamber, and the interior floor plate of the vehicle body interior parts is laid on the upper part of the elastic support seat.

6. The internal frame according to any one of claims 1-5, characterized in that, The connection structure includes a first connector disposed on the side beam, the first connector being disposed toward the accommodating chamber, and the first connector being adapted to detachably install the vehicle body interior components such as the vehicle seat, luggage rack, and side panel. The connection structure also includes a second connector disposed on the top beam, the second connector being disposed toward the accommodating chamber, and the second connector being adapted to detachably install the top plate in the vehicle interior trim.

7. The internal frame according to claim 6, characterized in that, Both the first connector and the second connector are sliding grooves. The top beam and the side beam are connected to the sliding grooves via threaded connectors to allow for the detachable installation of interior vehicle body parts.

8. A rail vehicle, characterized in that, include: The vehicle body includes a vehicle body chassis and a vehicle body frame, wherein the vehicle body chassis and the vehicle body frame enclose a placement chamber; The internal frame according to any one of claims 1-7 is adapted to be placed in the placement chamber and detachably connected to the vehicle body chassis.

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