Lightweight roof

Abstract

The present application relates to rail transit technical field, more specifically, relate to a kind of light-weight roof.The present application provides a kind of light-weight roof, comprising: roof edge beam, arc roof, front wall framework connector, roof crossbeam and roof end beam;Two roof edge beams extend along the two sides of arc roof, constitute the two long sides of roof, two roof end beams constitute the two short sides of roof, form the outer frame of roof;Roof crossbeam is located between roof edge beam, and the two ends of roof crossbeam are fixed on roof end beam respectively;Roof edge beam is welded with arc roof;Arc roof, roof edge beam and roof end beam are welded;Arc roof, roof edge beam, roof end beam and front wall framework connector are welded.The light-weight roof provided by the present application not only reduces the weight of roof, but also enhances the overall stiffness of roof, ensures the stability of roof equipment and the safety of vehicle.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and more specifically, to a lightweight vehicle roof. Background Technology

[0002] Electronically guided rubber-tired vehicle system is a brand-new urban rail transit system. By replacing the traditional mechanical guidance (rail-type) mode with electronic guidance technology, it has greater flexibility and adaptability, and provides the public with great travel convenience.

[0003] However, as a low-floor design, the vehicle needs to house a large amount of equipment on its roof, which requires the roof structure to have sufficient rigidity and strength to ensure the stability of the vehicle during operation and the normal operation of the equipment.

[0004] In the daily operation of vehicles with electronically guided rubber-tired systems, the stability of the roof structure is crucial. It needs to maintain minimal deformation while ensuring the normal operation and safety of the roof equipment. Currently, the roof weight of vehicles with electronically guided rubber-tired systems is relatively large, which to some extent affects the overall performance and energy efficiency of the vehicle.

[0005] Currently, traditional low-floor vehicle designs face problems such as excessively heavy roof structures, insufficient rigidity, and inability to meet the load-bearing requirements of high-strength equipment. To meet market demands for more efficient and environmentally friendly transportation, developing a lightweight roof design is particularly urgent.

[0006] Therefore, there is an urgent need for a lightweight electronically guided rubber wheel system for vehicle roofs to meet current market demands. Summary of the Invention

[0007] The purpose of this invention is to provide a lightweight vehicle roof that effectively solves the technical problems of heavy vehicle roof weight, insufficient rigidity, and insufficient rigidity at the connection with the driver's cab front frame in vehicles with electronically guided rubber wheel systems.

[0008] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0009] To achieve the above objectives, the present invention provides a lightweight vehicle roof, comprising: a roof side beam, an arc-shaped roof, a front frame connector, a roof cross beam, and a roof end beam.

[0010] Two roof side beams extend along both sides of the arc-shaped roof, forming the two long sides of the roof, and two roof end beams form the two short sides of the roof, forming the outer frame of the roof.

[0011] The top cover crossbeam is located between the top cover side beams, and both ends of the top cover crossbeam are respectively fixed to the top cover end beams;

[0012] The top cover side beam is welded to the arc-shaped top cover;

[0013] The arc-shaped top cover, the side beam of the top cover, and the end beam of the top cover are welded together.

[0014] The arc-shaped top cover, the side beams of the top cover, the end beams of the top cover, and the connecting parts of the front frame are welded together.

[0015] In one embodiment, the two ends of the top cover beam are respectively welded to two top cover end beams;

[0016] The middle part of the top cover beam is welded to the arc-shaped top cover;

[0017] The welding method is segment welding.

[0018] In one embodiment, the front frame connector includes a plurality of connecting plates and an end top plate;

[0019] The connecting plates are welded together to form a fixed frame structure and are welded to the end top plate.

[0020] In one embodiment, the number of fixed frame structures is two, respectively disposed at both ends of the end top plate:

[0021] Each of the fixed frame structures includes: a first connecting plate, a second connecting plate, a third connecting plate, and a fourth connecting plate;

[0022] The first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate are welded together to form a fixed frame structure.

[0023] In one embodiment, the end top plate is welded to the top cover side beam, the arc-shaped top cover, and the top cover end beam.

[0024] In one embodiment, the first connecting plate has bolt holes for bolting the roof to the front bulkhead frame;

[0025] The third connecting plate has a circular hole.

[0026] In one embodiment, the roof further includes: a wiring support mounting hole and a drainage hole;

[0027] The cable guide bracket mounting hole is located on the top cover side beam and is used to install the cable guide bracket;

[0028] The drainage hole is located on the side beam of the top cover and is used to install the drainage system.

[0029] In one embodiment, the roof further includes: an air conditioning return vent and an air conditioning outlet;

[0030] The air conditioning return vent is located on the arc-shaped top cover and is used for ventilation of the vehicle's air conditioning system.

[0031] The air conditioning vents are located on the rounded top cover and are used to exhaust air from inside the vehicle.

[0032] In one embodiment, there are multiple top cover beams, which are evenly arranged and parallel to the top cover side beams.

[0033] In one embodiment, C-grooves are used on the arc-shaped roof cover to mount external roof equipment;

[0034] The vehicle's air duct system is installed using C-shaped grooves on the arc-shaped top cover.

[0035] In one embodiment, the C-groove is fixed to the arc-shaped top cover by welding.

[0036] In one embodiment, the roof is made of an optimized aluminum alloy profile.

[0037] To achieve the above objectives, the present invention provides a vehicle including a vehicle body and a lightweight roof as described in any of the preceding claims.

[0038] The present invention proposes a lightweight roof that solves the technical problems of heavy vehicle roof weight, insufficient rigidity, and insufficient rigidity at the connection with the driver's cab front frame in electronically guided rubber wheel systems. It not only reduces the weight of the roof but also enhances the overall rigidity of the roof, ensuring the stability of the roof equipment and the safety of the vehicle. Attached Figure Description

[0039] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0040] Figure 1 A structural schematic diagram of the roof section of a vehicle with an existing electronically guided rubber-tired system is shown.

[0041] Figure 2A A top view of a lightweight vehicle roof, representing one aspect of the present invention, is shown.

[0042] Figure 2B A bottom view of a lightweight vehicle roof, one aspect of the present invention, is shown;

[0043] Figure 2C A side view of a lightweight vehicle roof, representing one aspect of the present invention, is shown.

[0044] Figure 3 A structural schematic diagram of a lightweight roof section of one aspect of the present invention is shown.

[0045] Figure 4 A structural schematic diagram of the front frame connector of one aspect of the present invention is shown.

[0046] The meanings of the labels in the figures are as follows:

[0047] 10 top cover edge beams;

[0048] 20mm rounded top cover;

[0049] 30 Front frame connector;

[0050] 40 top cover beam;

[0051] 50mm top cover end beam;

[0052] 11. Cable support mounting holes;

[0053] 12 drain holes;

[0054] 21. Air conditioning return air vent;

[0055] 22 air conditioning vents;

[0056] 23 First C-groove;

[0057] 24. Second C-groove;

[0058] 31 First connecting plate;

[0059] 32 Second connecting plate;

[0060] 33 Third connecting plate;

[0061] 34. Fourth connecting plate;

[0062] 35 End plate. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0064] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Figure 1 A structural schematic diagram of the roof section of a vehicle with an existing electronically guided rubber-tired system is shown, such as... Figure 1 As shown, the existing electronically guided rubber wheel system results in a heavy vehicle roof with insufficient rigidity and strength, making it prone to deformation.

[0066] To address the issues of heavy weight and insufficient rigidity in traditional vehicle roofs, this invention proposes a lightweight roof design. By optimizing the profile design and rationally adjusting the structure, the weight of the roof is significantly reduced. At the same time, by adding roof crossbeams and optimizing the connection between the roof and the front frame, the overall rigidity of the roof is enhanced, ensuring the stability of the roof equipment and the safety of the vehicle.

[0067] The present invention provides a lightweight vehicle roof, comprising: a roof side beam 10, an arc-shaped roof 20, a front frame connector 30, a roof crossbeam 40, and a roof end beam 50.

[0068] The top cover side beam 10 is welded to the arc top cover 20, and then welded to the top cover end beam 50.

[0069] The arc-shaped top cover 20, the top cover side beam 10, and the top cover end beam 50 are then welded together with the front frame connector 30.

[0070] The lightweight roof proposed in this invention uses optimized aluminum alloy profiles. By optimizing the profile structure of the roof side beams, the arc roof, and the roof end beams, the profile cross-sections are optimized. The wall thickness of the profiles is adjusted according to the stress conditions of the roof, ensuring that the weight is reduced while maintaining strength, thus achieving lightweight treatment of the roof.

[0071] Lightweight roofs not only improve the performance of vehicles with electronically guided rubber wheel systems, but also extend their service life, thus providing passengers with a more comfortable and reliable travel experience.

[0072] Figure 2A A top view of a lightweight vehicle roof, representing one aspect of the present invention, is shown. Figure 2B A bottom view of a lightweight vehicle roof, representing one aspect of the present invention, is shown. Figure 2C A side view of a lightweight vehicle roof, representing one aspect of the present invention, is shown. Combined with... Figure 2A , Figure 2B and Figure 2C This further illustrates the lightweight vehicle roof proposed in this invention.

[0073] The rounded roof 20 forms the main covering of the roof, providing the overall shape of the roof and enhancing its resistance to deformation.

[0074] In one embodiment, the arc-shaped top cover 20 can be a single piece or welded together from multiple profiles.

[0075] In one embodiment, the ends of the top cover beam 40 are welded to two top cover side beams 10 respectively, and the middle part of the top cover beam 40 is welded to the arc-shaped top cover. The welding method can be segment welding, and the weld seams should be avoided from overlapping.

[0076] like Figure 2A As shown, two roof side beams 10 extend along both sides of the arc roof 20 of the vehicle roof, forming the two long sides of the roof, providing support for the roof and longitudinal stiffness of the overall frame.

[0077] like Figure 2B As shown, the two roof end beams 50 form the two short sides of the roof, providing the overall end rigidity of the roof;

[0078] Among them, the roof end beam 50 is located at the front and rear ends of the roof and is an essential part of the roof structure.

[0079] Two roof side beams 10 and two roof end beams 50 form the outer frame of the roof.

[0080] The top cover crossbeam 40 is located between the top cover side beams 10. The two ends of the top cover crossbeam 40 are welded and fixed to the top cover end beam 50, while the middle part of the top cover crossbeam 40 is welded to the arc-shaped top cover 20 to provide additional longitudinal stiffness and prevent deformation in the middle area of ​​the roof.

[0081] There are multiple top cover beams 40, which are evenly arranged and parallel to the top cover side beams 10.

[0082] Specifically, the number of roof beams 40 can be adjusted according to the weight of the roof equipment, the roof air outlets, return air outlets, wiring holes, door positions, etc., without affecting the installation of the equipment and doors.

[0083] The material of the roof crossbeam 40 is the same as that of the roof profile, which can be aluminum alloy. There are no specific restrictions on its size (width, length) and position, but it should avoid conflict with components such as the roof air conditioning vents and return air vents.

[0084] The roof crossbeam 40 is located in the middle of the roof, and its number can be adjusted according to actual needs. Compared with the roof end beam 50, the roof crossbeam 40 is smaller in width and thickness, serving as a supplementary component to enhance the rigidity of the roof.

[0085] By adding a roof beam 40 to the interior roof, the overall rigidity of the roof is improved, ensuring that the vehicle will not undergo significant deformation during normal driving.

[0086] The top cover side beam 10 is welded to the arc-shaped top cover 20, and the arc-shaped top cover 20, the top cover side beam 10, and the top cover end beam 50 are welded together. Figure 2C As shown, the front frame connector 30 is welded to the arc-shaped top cover 20, the top cover side beam 10, and the top cover end beam 50.

[0087] Among them, the top cover side beam 10 profile was optimized, including the distribution of its internal reinforcing ribs and the local thickness of its exterior. Based on the simulation calculation results, the profile wall thickness was reduced, and the weight was reduced while meeting the strength and stiffness requirements.

[0088] In one embodiment, the roof also includes: a wire support mounting hole 11 and a drainage hole 12. The wire support mounting hole is located on the roof side beam and is used to install the wire support.

[0089] Specifically, the position, number, and size of the roof-mounted wiring support mounting holes 11 can be adjusted according to the needs of the roof-mounted equipment wiring harness and the installation position of the roof-mounted equipment.

[0090] Drainage hole 12 is located on the roof side beam and is used to install a drainage system to prevent rainwater or water from accumulating on the roof.

[0091] In one embodiment, the roof also includes: an air conditioning return vent 21 and an air conditioning outlet 22;

[0092] The air conditioning return vent 21 is located on the arc-shaped top cover and is used for ventilation of the vehicle's air conditioning system.

[0093] The air conditioning vent 22 is located on the rounded top cover and exhausts air from inside the vehicle.

[0094] Specifically, the location, number, and size of the roof air vents and roof air return vents can be adjusted according to the overall layout requirements of the roof equipment.

[0095] This invention optimizes the original profiles of the top cover side beam, the arc top cover, and the top cover end beam: optimizes the profile cross-section; and optimizes the profile wall thickness according to the stress conditions.

[0096] Based on simulation calculations, the wall thickness of the profile was reduced to account for the distribution of internal reinforcing ribs and the local thickness of the external ribs in the top cover edge beam, thus achieving weight reduction while meeting strength and stiffness requirements.

[0097] Figure 3 A structural schematic diagram of a lightweight roof section of the present invention is shown, as follows: Figure 3As shown, the arc-shaped top cover 20 is provided with a first C-shaped groove 23 and a second C-shaped groove 24:

[0098] The first C-shaped groove 23 is located on the top of the arc-shaped roof and is used to install external roof equipment, such as communication antennas, lighting equipment or other vehicle systems;

[0099] The second C-shaped groove 24 is located at the bottom of the arc-shaped top cover and is used to install the vehicle's air duct system, which helps to optimize the airflow inside the vehicle and improve passenger comfort.

[0100] The C-shaped groove is similar to a beam structure design, which can increase the rigidity of the roof. The C-shaped structure can not only be used to fix and support the installed equipment, but also ensure that the surface of the C-shaped groove on the roof is at the same height, which can ensure that the installation plane of the equipment on the roof is flat.

[0101] Furthermore, such as Figure 3 As shown in the ellipse, the shape and rounded corners of the arc-shaped top cover 20 have also been optimized to increase rigidity and reduce deformation as much as possible without affecting the installation of other equipment.

[0102] This invention provides a robust and lightweight roof that meets the installation requirements of large equipment in vehicles with electronically guided rubber-wheel systems. A front bulkhead frame connector 30 connects the roof to the driver's cab front bulkhead frame, ensuring the stability and overall rigidity of the roof's front end.

[0103] In one embodiment, the front frame connector 30 includes a plurality of connecting plates and an end top plate, wherein the plurality of connecting plates are welded together to form a fixed frame structure and are welded to the end top plate.

[0104] The end plate is welded to the top cover side beam, the arc-shaped top cover, and the top cover end beam.

[0105] Figure 4 A structural schematic diagram of the front frame connector of one aspect of the present invention is shown. For example... Figure 4 As shown, the front frame connector 30 includes two identical fixed frame structures and an end top plate 35, wherein the two fixed frame structures are welded to the end top plate respectively.

[0106] Each fixed frame structure includes a first connecting plate 31, two second connecting plates 32, a third connecting plate 33, and a fourth connecting plate 34, which are welded together and connected to the top plate at the end.

[0107] Among them, the two fixed frame structures are welded to the end top plate 35 respectively, and the end top plate 35 is welded together with the top cover side beam 10, the arc top cover 20 and the top cover end beam 50.

[0108] The first connecting plate 31 has bolt holes for bolting the roof to the front frame.

[0109] The front frame of the driver's cab is connected to the roof structure with bolts through the bolt holes on the first connecting plate 31 to ensure the stability of the connection.

[0110] The third connecting plate 33 has a round hole to facilitate the installation of bolts and ensure the stability of the connection.

[0111] In this embodiment, the roof and the front frame are connected by the front frame connector 30, which increases the structural rigidity and reduces deformation.

[0112] The thickness of the front frame connector and the shape of the end top plate can be adjusted according to the needs of the overall vehicle torsional stiffness, the welding position of the end top plate and the roof, etc. The wall thickness of the end top plate can also be increased to increase stiffness and reduce deformation.

[0113] Increase the rigidity as much as possible without affecting the installation of other equipment, and reduce deformation.

[0114] Based on the aforementioned lightweight roof structure, the present invention also proposes a vehicle, including a vehicle body and the aforementioned lightweight roof.

[0115] This invention provides an optimized electronically guided rubber wheel system vehicle roof structure. By improving the design of components such as the roof side beam, the arc roof, and the roof crossbeam, the roof is made lighter and more rigid, providing higher safety and comfort for vehicle operation. At the same time, it further reduces manufacturing and maintenance costs and improves overall performance and service life.

[0116] Specifically, the present invention provides a lightweight roof structure that can support large roof equipment while meeting rigidity requirements, and has the following advantages:

[0117] (1) Lightweight roof: By optimizing the profile design of the roof side beam, the arc roof and the roof end beam, the overall weight of the roof is reduced and the energy efficiency of the vehicle is improved.

[0118] (2) Enhance the rigidity of the roof. By adding roof beams and optimizing the connection structure between the roof and the front frame, the overall rigidity of the roof is enhanced, ensuring that the roof will not deform significantly during vehicle operation.

[0119] (3) The installation of each device is convenient. The roof is designed with C-shaped grooves for installing external devices and internal air ducts, ensuring the stability and convenience of device installation.

[0120] Furthermore, the terms "upper," "lower," "left," "right," "top," "bottom," "horizontal," and "vertical" used in the following description should be understood as the orientations shown in the relevant paragraphs and accompanying drawings. These relative terms are for illustrative purposes only and do not imply that the described apparatus must be manufactured or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0121] It is understood that although terms such as "first," "second," and "third" may be used herein to describe various components, regions, layers, and / or parts, these components, regions, layers, and / or parts should not be limited by these terms, and these terms are only used to distinguish different components, regions, layers, and / or parts. Therefore, the first components, regions, layers, and / or parts discussed below may be referred to as second components, regions, layers, and / or parts without departing from some embodiments of the present invention.

[0122] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lightweight vehicle roof, characterized in that, include: Top cover side beams, rounded top cover, front frame connectors, top cover crossbeams and top cover end beams; Two roof side beams extend along both sides of the arc-shaped roof, forming the two long sides of the roof, and two roof end beams form the two short sides of the roof, forming the outer frame of the roof. The top cover crossbeam is located between the top cover side beams, and both ends of the top cover crossbeam are respectively fixed to the top cover end beams; The top cover side beam is welded to the arc-shaped top cover; The arc-shaped top cover, the side beam of the top cover, and the end beam of the top cover are welded together. The arc-shaped top cover, the side beams of the top cover, the end beams of the top cover, and the connecting parts of the front frame are welded together.

2. The lightweight roof according to claim 1, characterized in that, The two ends of the top cover crossbeam are respectively welded to the two top cover end beams; The middle part of the top cover beam is welded to the arc-shaped top cover; The welding method is segment welding.

3. The lightweight roof according to claim 1, characterized in that, The front frame connector includes several connecting plates and end top plates; The connecting plates are welded together to form a fixed frame structure and are welded to the end top plate.

4. The lightweight roof according to claim 3, characterized in that, There are two fixed frame structures, one at each end of the top plate at the end: Each of the fixed frame structures includes: a first connecting plate, a second connecting plate, a third connecting plate, and a fourth connecting plate; The first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate are welded together to form a fixed frame structure.

5. The lightweight roof according to claim 3, characterized in that, The end plate is welded to the top cover side beam, the arc-shaped top cover, and the top cover end beam.

6. The lightweight roof according to claim 4, characterized in that, The first connecting plate has bolt holes for bolting the roof to the front frame; The third connecting plate has a circular hole.

7. The lightweight roof according to claim 1, characterized in that, The roof also includes: wiring support mounting holes and drainage holes; The cable guide bracket mounting hole is located on the top cover side beam and is used to install the cable guide bracket; The drainage hole is located on the side beam of the top cover and is used to install the drainage system.

8. The lightweight roof according to claim 1, characterized in that, The roof also includes: air conditioning return vents and air conditioning outlets; The air conditioning return vent is located on the arc-shaped top cover and is used for ventilation of the vehicle's air conditioning system. The air conditioning vents are located on the rounded top cover and are used to exhaust air from inside the vehicle.

9. The lightweight vehicle roof according to claim 2, characterized in that, There are multiple top cover beams, which are evenly arranged and parallel to the top cover side beams.

10. The lightweight vehicle roof according to claim 1, characterized in that, The circular arc-shaped top cover is used to install external roof equipment. The vehicle's air duct system is installed using C-shaped grooves on the arc-shaped top cover.

11. The lightweight vehicle roof according to claim 10, characterized in that, The C-shaped groove is fixed to the arc-shaped top cover by welding.

12. The lightweight vehicle roof according to claim 1, characterized in that, The roof is made of optimized aluminum alloy profiles.

13. A vehicle, characterized in that, Includes the vehicle body and the lightweight roof as described in any one of claims 1-12.

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