Vehicle floor and railway vehicle

Abstract

This application provides a vehicle floor and a rail vehicle. The vehicle floor includes, from bottom to top, a lower floor, vibration damping blocks, and an upper floor. Multiple vibration damping blocks are disposed on the upper surface of the lower floor. A cold-resistant material is sprayed onto the upper surface of the lower floor, avoiding contact with the vibration damping blocks. The lower floor includes a lower metal profile frame, a lower core layer, a lower first surface layer, and a lower second surface layer. The lower first surface layer covers the lower surfaces of the lower metal profile frame and the lower core layer, and the lower second surface layer covers the upper surfaces of the lower metal profile frame and the lower core layer. Threaded connectors are provided on the lower metal profile frame for connection to the vehicle chassis. The vehicle floor and rail vehicle provided by this application directly spray the cold-resistant material onto the surface of the lower floor, significantly improving efficiency. The vibration damping blocks and cold-resistant material are pre-formed on the lower floor and installed as a whole onto the chassis, shortening the overall vehicle installation time.

Description

Technical Field

[0001] This application relates to vehicle structure technology, and more particularly to a vehicle floor and rail vehicle. Background Technology

[0002] In recent years, with the rapid development of urban rail transit technology, its components are also moving towards lightweighting, integration, and modularization. Currently, the installation of each component of urban rail vehicles generally has an independent installation structure and interface, and the installation process of each component is complex and cumbersome, resulting in low production efficiency.

[0003] Taking the vehicle's chassis structure as an example, a floor is installed on the chassis, and the floor is connected to the chassis by welding. There are numerous welding points, requiring a significant amount of labor. Furthermore, multiple elastic supports are installed on the upper part of the floor. The number of these elastic supports is considerable, typically over 500 per car, and each support has different specifications, requiring significant time for installation and positioning. Additionally, insulated material needs to be laid in areas without elastic supports. This material needs to be cut to different thicknesses and sizes to avoid interfering with the elastic supports, resulting in a significant time commitment for its installation. Moreover, the interior floor is laid on top of the insulated material and elastic supports. During installation, adjustment shims need to be added or removed on the elastic supports to repeatedly adjust the flatness of the interior floor at multiple points, which also consumes considerable time. This results in a very long chassis installation cycle for the vehicle, significantly impacting the production cycle.

[0004] In addition, in the traditional solution, the corrugated floor, elastic support, cold-proof material, interior floor and other structures are installed on the vehicle body frame in sequence after the vehicle body is formed. The overall vehicle installation time is the sum of the installation time of each component, which is time-consuming and prone to installation errors between components, which will further affect the installation progress. Summary of the Invention

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

[0006] According to a first aspect of the embodiments of this application, a vehicle floor is provided, comprising: a lower floor, a damping block, and an upper floor arranged sequentially from bottom to top;

[0007] Multiple vibration damping blocks are installed on the upper surface of the lower floor; a cold-proof material is sprayed onto the upper surface of the lower floor, covering the entire upper surface of the lower floor, and the cold-proof material avoids the vibration damping blocks;

[0008] The lower floor includes: a lower metal profile frame, a lower core layer, a lower first surface layer, and a lower second surface layer; the lower metal profile frame includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces; the lower core layer is disposed within the receiving spaces formed by the transverse beams and longitudinal beams; the lower first surface layer covers the lower surface of the lower metal profile frame and the lower core layer, and the lower second surface layer covers the upper surface of the lower metal profile frame and the lower core layer; threaded connectors are provided on the lower metal profile frame for connection with the vehicle chassis.

[0009] According to a second aspect of the embodiments of this application, a rail vehicle is provided, including: a vehicle floor and a chassis as described above, wherein the vehicle floor is connected to a lower metal profile frame in a lower floor via threaded connectors.

[0010] The technical solution provided in this application embodiment adopts a lower floor, shock-absorbing blocks, and an upper floor arranged sequentially from bottom to top, with multiple shock-absorbing blocks disposed on the upper surface of the lower floor; a cold-proof material is sprayed onto the upper surface of the lower floor, covering the entire upper surface of the lower floor, and the cold-proof material avoids the shock-absorbing blocks; the lower floor includes: a lower metal profile frame, a lower core layer, a lower first surface layer, and a lower second surface layer; the lower metal profile frame includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces; the lower core layer is disposed within the receiving spaces formed by the transverse beams and longitudinal beams; the lower first surface layer covers the lower surface of the lower metal profile frame and the lower core layer, and the lower second surface layer covers the upper surface of the lower metal profile frame and the lower core layer; threaded connectors are provided on the lower metal profile frame for connection with the vehicle chassis. On the one hand, the above solution allows for direct spraying of the anti-freezing material, eliminating the need for cutting and aligning the anti-freezing layer, thus significantly improving efficiency. On the other hand, the shock-absorbing blocks and anti-freezing material are pre-formed on the lower floor and installed as a whole onto the frame, allowing for parallel installation with the vehicle body and shortening the overall vehicle installation time. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0012] Figure 1 A cross-sectional view of the vehicle floor provided in an embodiment of this application;

[0013] Figure 2 A cross-sectional view of the vehicle floor disposed above the underframe, provided in an embodiment of this application;

[0014] Figure 3 A top view of the lower floor of a vehicle floor provided in an embodiment of this application;

[0015] Figure 4A top view of one of the modules in the lower floor provided in an embodiment of this application;

[0016] Figure 5 A cross-sectional view of the lower floor provided in an embodiment of this application;

[0017] Figure 6 A cross-sectional view of the installation of the lower floor and the base frame provided in an embodiment of this application;

[0018] Figure 7 A top view of the upper floor of a vehicle floor provided in an embodiment of this application;

[0019] Figure 8 A top view of one of the modules in the upper floor provided in an embodiment of this application;

[0020] Figure 9 A cross-sectional view of the upper floor provided in an embodiment of this application;

[0021] Figure 10 This is a cross-sectional view showing the connection between the upper floor, the lower floor, and the base frame, as provided in an embodiment of this application.

[0022] Figure label:

[0023] 1-Lower floor; 11-Lower metal profile frame; 12-Lower core layer; 13-Lower first surface layer; 14-Lower second surface layer; 15-Lower floor module;

[0024] 2-Vibration damping blocks;

[0025] 3-Upper floor; 31-Upper metal profile frame; 32-Upper core layer; 33-Upper first surface layer; 34-Upper second surface layer; 35-Upper floor module;

[0026] 4-Base frame;

[0027] 5-Threaded fasteners. Detailed Implementation

[0028] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0029] This embodiment provides a vehicle floor that can be applied to rail vehicles, specifically high-speed trains, subways, and light rail. The vehicle floor is installed above the vehicle's underframe.

[0030] In this embodiment, the length direction of the vehicle is referred to as the longitudinal direction, the width direction of the vehicle is referred to as the transverse direction, and the height direction of the vehicle is referred to as the vertical direction.

[0031] like Figure 1 and Figure 2 As shown, the vehicle floor provided in this embodiment includes: a lower floor 1, vibration damping blocks 2, and an upper floor 3 arranged sequentially from bottom to top. Multiple vibration damping blocks 2 are disposed on the upper surface of the lower floor 1; an anti-cold material is sprayed onto the upper surface of the lower floor 1, covering the entire upper surface of the lower floor 1, and the anti-cold material avoids the vibration damping blocks 2.

[0032] Compared with the traditional method of laying the cold protection layer, this embodiment directly sprays the cold protection material, eliminating the need for cutting and aligning the cold protection layer, thus greatly improving efficiency.

[0033] like Figures 3 to 6 As shown, the lower floor 1 includes: a lower metal profile frame 11, a lower core layer 12, a lower first surface layer 13, and a lower second surface layer 14. The lower metal profile frame 11 includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces. The lower core layer 12 is disposed within the receiving spaces formed by the transverse beams and longitudinal beams.

[0034] A lower first surface layer 13 covers the upper surfaces of the lower metal profile frame 11 and the lower core layer 12, and a lower second surface layer 14 covers the lower surfaces of the lower metal profile frame 11 and the lower core layer 12. Threaded connectors are provided on the lower metal profile frame 11 for connection to the vehicle chassis 4.

[0035] The aforementioned shock-absorbing blocks and cold-proof materials are pre-formed on the lower floor 1 and installed as a whole on the base frame. This allows for parallel installation with the vehicle body, thus shortening the overall vehicle installation time.

[0036] The technical solution provided in this embodiment adopts a lower floor, shock-absorbing blocks, and an upper floor arranged sequentially from bottom to top, with multiple shock-absorbing blocks disposed on the upper surface of the lower floor; a cold-proof material is sprayed onto the upper surface of the lower floor, covering the entire upper surface of the lower floor, and the cold-proof material avoids the shock-absorbing blocks; the lower floor includes: a lower metal profile frame, a lower core layer, a lower first surface layer, and a lower second surface layer; the lower metal profile frame includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces; the lower core layer is disposed within the receiving spaces formed by the transverse beams and longitudinal beams; the lower first surface layer covers the lower surface of the lower metal profile frame and the lower core layer, and the lower second surface layer covers the upper surface of the lower metal profile frame and the lower core layer; threaded connectors are provided on the lower metal profile frame for connection with the vehicle chassis. On the one hand, the above solution allows for direct spraying of the anti-freezing material, eliminating the need for cutting and aligning the anti-freezing layer, thus significantly improving efficiency. On the other hand, the shock-absorbing blocks and anti-freezing material are pre-formed on the lower floor and installed as a whole onto the frame, allowing for parallel installation with the vehicle body and shortening the overall vehicle installation time.

[0037] Based on the above technical solution, the vibration damping block 2 is made of a material with a certain degree of elasticity and good support capacity, such as EPDM rubber, and is bonded to the upper surface of the lower second surface layer 14. The thickness of the vibration damping block 2 can be set and adjusted according to factors such as the overall vehicle height, chassis height, and interior space height of the vehicle compartment.

[0038] The lower core layer 12 is made of polyphenylene oxide (PPO) material with a thickness of 12-18 mm, specifically 15 mm. The lower first surface layer 11 is a phenolic resin board with a thickness of 1.8 mm-2.2 mm, specifically 2 mm. The lower second surface layer 12 is a phenolic resin board with a thickness of 0.8 mm-1.2 mm, specifically 1 mm. The above thicknesses can also be adjusted according to specific circumstances.

[0039] The insulation material can be polyurethane foam or other materials, with a spray thickness of 1.2mm-1.5mm. During the spraying process, the insulation material should avoid the vibration damping block 2; that is, the surface of the vibration damping block 2 should not be coated with insulation material. The sprayed insulation material can replace traditionally laid insulation materials, providing thermal insulation. Its lighter weight facilitates lightweight design and reduces labor installation costs.

[0040] The lower metal profile frame 11 can be arranged continuously along the length of the vehicle, or it can be composed of multiple lower floor modules 15 spliced ​​together. For example, the lower floor 1 includes multiple sets of lower metal profile frames 11 arranged longitudinally, and adjacent lower metal profile frames 11 are connected by threaded fasteners 5. A set of lower metal profile frames 11 and its internal lower core layer 12 constitute a lower floor module 15. Multiple lower floor modules 15 are arranged longitudinally, and the dimensions of each lower floor module 15 can be the same or adjusted according to the vehicle body underframe crossbeams and actual needs.

[0041] The method of using multiple floor modules (15) spliced ​​together can reduce costs, facilitate production and installation, and thus improve production efficiency.

[0042] The lower first surface layer 13 and the lower second surface layer 14 can be arranged in modules or along the entire length of the vehicle. Similarly, modular arrangement can reduce costs and facilitate production and installation.

[0043] Figure 4 This is a perspective view showing one of the lower floor modules 15, and illustrating the positional relationship between the lower metal profile frame 11 and the vibration damping blocks 2. The vibration damping blocks 2 are arranged in an array and can be positioned above the lower core layer 12. Each vibration damping block 2 is a rectangular block extending longitudinally. The vibration damping blocks 2 are specifically positioned next to the lower metal profile frame 11 to buffer and dampen vibrations at the connection points between the upper floor 3 and the lower floor 1.

[0044] The lower metal profile frame 11 is a frame structure connected by multiple transverse beams and longitudinal beams. The transverse beam located in the middle of a lower floor module 15 is a square tube beam. The upper part of the transverse beam located on one side edge of a lower floor module 15 extends longitudinally to form an overlap. The lower part of the transverse beam located on the other side edge extends longitudinally to form an overlap. The overlaps of adjacent lower floor modules 15 overlap vertically and are fixedly connected together by threaded fasteners 5.

[0045] The lower metal profile frame 11 has pre-set connection holes, which are used to connect the lower metal profile frame 11 of adjacent modules through threaded fasteners 5, or to connect the lower metal profile frame 11 to the base frame 4.

[0046] like Figures 7 to 10 As shown, based on the above technical solution, the upper floor 3 includes: an upper metal profile frame 31, an upper core layer 32, an upper first surface layer 33, and an upper second surface layer 34. The upper metal profile frame 31 includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces, and the upper core layer 32 is disposed within the receiving spaces formed by the transverse beams and longitudinal beams.

[0047] The upper first surface layer 33 covers the lower surface of the upper metal profile frame 31 and the upper core layer 32, and the upper second surface layer 34 covers the upper surface of the upper metal profile frame 31 and the upper core layer 32. A portion of the upper metal profile frame 31 corresponds to the position of the lower metal profile frame 11, and a threaded connector 5 is provided on the upper metal profile frame 31 for connecting with the lower metal profile frame 11.

[0048] The upper core layer 32 is made of polyphenylene oxide (PPO) material and has a thickness of 10 mm. The lower first surface layer 33 is a phenolic resin board with a thickness of 1 mm. The lower second surface layer 34 is a phenolic resin board with a thickness of 2 mm. The above thicknesses can also be adjusted according to specific circumstances.

[0049] The upper metal profile frame 31 can be arranged continuously along the length of the vehicle, or it can be composed of multiple upper floor modules 35 spliced ​​together. For example, the upper floor 3 includes multiple sets of upper metal profile frames 31 arranged longitudinally, and adjacent upper metal profile frames 31 are connected by threaded fasteners 5. A set of upper metal profile frames 31 and its internal upper core layer 32 constitute an upper floor module 35. Multiple upper floor modules 35 are arranged longitudinally, and the dimensions of each upper floor module 35 can be the same or adjusted according to actual needs.

[0050] The method of using multiple upper floor modules spliced ​​together at 35° can reduce costs and facilitate production and installation, thereby improving production efficiency.

[0051] The lower first surface layer 33 and the lower second surface layer 34 can be set in blocks according to modules, or they can be arranged along the entire length of the vehicle. Figure 8 The perspective view shows one of the upper floor modules 35 and the upper metal profile frame 31.

[0052] The upper metal profile frame 31 is a frame structure connected by multiple transverse beams and longitudinal beams. The transverse beam located in the middle of an upper floor module 35 is a square tube beam. The upper part of the transverse beam located on one side edge of an upper floor module 35 extends longitudinally to form an overlap. The lower part of the transverse beam located on the other side edge extends longitudinally to form an overlap. The overlaps of adjacent upper floor modules 35 overlap vertically and are fixedly connected together by threaded fasteners 5.

[0053] The upper metal profile frame 31 has pre-set connection holes, which are used to connect to the lower metal profile frame 11 through threaded fasteners 5, or to related components such as vehicle armrests, seats, and side walls.

[0054] The upper metal profile frame 31 and the lower metal profile frame 11 can be welded from aluminum square tubing. The threaded fastener 5 can be a countersunk screw.

[0055] The aforementioned lower floor 1 can be produced simultaneously with the vehicle body. After the vehicle body is produced, the lower floor 1, which already has vibration damping blocks 2 and cold-proof materials, is installed onto the vehicle body frame 4. Specifically, it is fixed to the frame 4 using threaded fasteners 5, and shims are placed between the frame 4 and the lower floor 1 for leveling as needed. Then, the upper floor 3 is directly installed on the lower floor 1, connected to the lower floor 1 using threaded fasteners, and leveling is performed by placing adjusting shims on the vibration damping blocks 2 as needed.

[0056] The installation process requires only two steps: installing the lower floor 1 and installing the upper floor 3. By integrating the production of the lower floor 1 into the component manufacturing process, and then assembling the components onto the lower floor 1 before installing it onto the vehicle chassis, installation errors in each step of the vehicle assembly can be reduced, significantly shortening the working time. Furthermore, modular operation during vehicle assembly improves the overall integrity and integration of the installation, greatly increasing production efficiency.

[0057] Both the lower floor 1 and the upper bottom 3 are made of composite material boards composed of phenolic resin board + PPO core side layer + phenolic resin board, which can reduce weight and has a good sound insulation and noise reduction effect.

[0058] In addition, the vehicle floor provided in this embodiment does not use welding process, so there is no welding deformation, and it is easier to control the flatness of the floor surface and the overall size of the vehicle, thereby reducing maintenance costs.

[0059] Based on the above technical solutions, this embodiment also provides a rail vehicle, including the vehicle floor and underframe provided in any of the above contents. The vehicle floor is connected to the lower metal profile frame in the lower floor through threaded connectors. The specific method can be referred to the above contents.

[0060] The rail vehicle provided in this embodiment has the same technical effect as the vehicle floor described above.

[0061] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as C, VHDL, Verilog, the object-oriented programming language Java, and the interpreted scripting language JavaScript.

[0062] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0064] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0065] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0069] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A vehicle floor, characterized by, include: The lower floor, vibration damping blocks, and upper floor are arranged sequentially from bottom to top. Multiple vibration damping blocks are installed on the upper surface of the lower floor. Spray a cold-proof material onto the upper surface of the lower floor. The cold-proof material covers the entire upper surface of the lower floor and avoids the vibration damping blocks. Shock-absorbing blocks and insulation materials are pre-formed on the lower floor; The lower floor includes: a lower metal profile frame, a lower core layer, a lower first surface layer, and a lower second surface layer; the lower metal profile frame includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces; the lower core layer is disposed within the receiving spaces formed by the transverse beams and longitudinal beams; the lower first surface layer covers the lower surface of the lower metal profile frame and the lower core layer, and the lower second surface layer covers the upper surface of the lower metal profile frame and the lower core layer; threaded connectors are provided on the lower metal profile frame for connection with the vehicle chassis.

2. The vehicle floor according to claim 1, characterized in that, The upper floor includes: an upper metal profile frame, an upper core layer, an upper first surface layer, and an upper second surface layer; the upper metal profile frame includes multiple transverse beams and longitudinal beams, forming multiple closed receiving spaces; the upper core layer is disposed within the receiving spaces formed by the transverse beams and longitudinal beams; the upper first surface layer covers the lower surface of the upper metal profile frame and the upper core layer, and the upper second surface layer covers the upper surface of the upper metal profile frame and the upper core layer; a portion of the upper metal profile frame corresponds to the position of the lower metal profile frame, and threaded connectors are provided on the upper metal profile frame for connection with the lower metal profile frame.

3. The vehicle floor according to claim 1, characterized in that, The damping block is located above the lower core layer.

4. The vehicle floor according to claim 3, characterized in that, The lower floor consists of multiple sets of lower metal profile frames arranged longitudinally, with adjacent metal profile frames connected by threaded fasteners.

5. The vehicle floor according to claim 1, characterized in that, The vibration damping block is made of EPDM rubber.

6. The vehicle floor according to claim 1, characterized in that, The lower core layer is made of polyphenylene oxide (PPO) material, the lower first surface layer is a phenolic resin board, and the lower second surface layer is a phenolic resin board.

7. The vehicle floor according to claim 6, characterized in that, The thickness of the lower core layer is 12-18mm, the thickness of the lower first surface layer is 1.8mm-2.2mm, and the thickness of the lower second surface layer is 0.8mm-1.2mm.

8. The vehicle floor according to claim 1, characterized in that, The thickness of the cold-proof material is 1.2mm-1.5mm.

9. The vehicle floor according to claim 2, characterized in that, The upper core layer is made of polyphenylene oxide (PPO) material, the upper first surface layer is a phenolic resin board, and the upper second surface layer is a phenolic resin board.

10. A rail vehicle, characterized in that, include: The vehicle floor and chassis as described in any one of claims 1-9, wherein the vehicle floor is connected to the lower metal profile frame in the lower floor via threaded connectors.

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