A composite top cover structure suitable for installing heavy-duty components

Abstract

The present invention discloses a composite material top cover structure suitable for installing heavy-duty components, comprising: a bracket, a top cover body, a prefabricated profile, a styling panel transition bracket, and a top cover styling baffle; the bracket includes a longitudinal beam and a lower support aluminum plate, which are welded or fixed by rivets, the lower support aluminum plate is fixed on the top cover body by a colloidal sealing fixing material, and the longitudinal beam is welded and fixed to the prefabricated profile; a side beam is provided on the top cover body, and the prefabricated profile is installed on the side beam and welded or fixed by rivets; a styling panel transition bracket is connected to the prefabricated profile, and a top cover styling baffle is fixed on the styling panel transition bracket. The present invention adds a prefabricated profile, and the bracket fits the top cover main body, so that the top cover main body can bear the load generated by the bracket. At the same time, the bracket transmits the load through the prefabricated profile and the top cover side beam, and the top cover main body does not need to add other embedded brackets, thereby reducing costs and improving production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of lightweight bus bodies, and is applied to the production and manufacturing industry of new energy buses. Specifically, it relates to a composite material roof structure suitable for installing heavy components. Background Art

[0002] Currently, there are mainly three solutions for installing air conditioners, batteries or other components on the roof of buses:

[0003] (1) The roof uses a steel structure framework, and brackets or mounting bolts are directly welded to the steel structure fasteners. The defect is that the total mass of the steel framework form is too heavy, consuming excessive fuel and having relatively poor vehicle maneuverability. The body is heavy, and when starting and driving, it will inevitably increase fuel consumption and emit a large amount of pollutants, which does not conform to the current basic national policy of environmental protection. On the other hand, the heavy body will seriously affect the maneuverability of the bus.

[0004] (2) The roof uses an aluminum alloy framework structure. The brackets are riveted or welded to the framework, and then the overhead components are connected to the brackets with bolts. Its disadvantage is that when the aluminum framework is riveted or welded to the brackets, the strength and stiffness are not high enough. Especially under the working conditions of the vehicle turning and a single wheel suspended, there are great risks in the strength and stiffness of this structure.

[0005] (3) The roof uses a composite material structure. Generally, heavy objects such as batteries are not placed on the roof. If necessary, the bracket fixing points are generally placed on the edge girders of the roof, and the girders bear the weight of the brackets and the batteries. This structure makes the overall structure of the composite roof with strong strength unable to participate in bearing the load of the roof, forcing the use of large cross-sectional sizes for the roof side girders, thereby increasing the weight of the roof, raising the center of gravity of the whole vehicle, increasing energy consumption, and affecting the safety performance of the bus. Summary of the Invention

[0006] In view of the above problems, the present invention discloses a composite material roof structure suitable for installing heavy components, which has a simple structure and reasonable design. The overall structure strength of the composite material is high, which can meet the requirements of components with large weights such as batteries installed on the roof. Its strength and stiffness are superior to those of traditional metal profiles plus brackets, and at the same time, it has good weight reduction effect and production efficiency.

[0007] For a composite material roof structure suitable for installing heavy components of the present invention, the roof main body is made of composite material, and installation profiles are locally added to the roof side girders, and brackets conforming to the roof main body are designed, so that the roof main body can bear the load generated by the brackets. At the same time, the brackets transfer the load to the roof side girders through the profiles, and the profiles are designed with interfaces for the roof styling baffles. The roof main body does not need to add other embedded brackets, thereby reducing costs and improving production efficiency.

[0008] Specifically, the composite material roof structure suitable for installing heavy-duty components includes: a bracket, a roof body, a prefabricated profile, a styling panel transition bracket, and a roof styling baffle; the bracket includes a longitudinal beam and a lower support aluminum plate, which are welded or fixed by rivets, the lower support aluminum plate is fixed on the roof body by a colloidal sealing and fixing material, and the longitudinal beam is welded and fixed to the prefabricated profile; the roof body is provided with side beams, and the prefabricated profile is installed on the side beams, welded or fixed by rivets; a styling panel transition bracket is connected to the prefabricated profile, and a roof styling baffle is fixed on the styling panel transition bracket.

[0009] The main material of the roof structure is fiber-reinforced composite material or sandwich composite material.

[0010] The prefabricated profile is designed and matched according to the outer contour surface of the side beam, and a groove is provided on the upper surface, and the styling panel transition bracket is fixed in the groove by bolts.

[0011] The styling panel transition bracket and the roof styling baffle are fixed by bolts.

[0012] Advantages of the present invention:

[0013] (1) The roof uses a composite material. By adding a prefabricated profile to the roof and redesigned the bracket for heavy-duty components, the composite material part of the roof and the side beam are stressed as a whole, so that the cross-section of the side beam of the bus roof is reduced and the overall mass is reduced. At the same time, the strength and stiffness requirements of the installation part of the roof are met, and the performance requirements of lightweight, light weight, high strength, and high stiffness of new energy buses are satisfied.

[0014] (2) Improve production efficiency and the safety and stability of products.

[0015] (3) The prefabricated profile also serves as the installation interface for the roof styling baffle, eliminating the need to add other components to install the roof styling baffle. Description of the drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 Partial enlarged view;

[0018] Figure 3 It is a schematic diagram of the baffle structure of the present invention.

[0019] In the figure: 1 - bracket, 11 - longitudinal beam, 12 - lower support aluminum plate; 2 - roof body, 21 - side beam; 3 - heavy-duty component; 4 - colloidal sealing and fixing material; 5 - prefabricated profile, 51 - groove; 6 - rivet; 7 - bolt; 8 - styling panel transition bracket; 9 - roof styling baffle. Detailed implementation manners

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Embodiment

[0021] As Figure 1 shown, a composite top cover structure suitable for installing heavy-duty components is applied in new energy buses, where the heavy-duty components include air conditioners, batteries and other heavy components. It includes: bracket 1, top cover body 2, prefabricated profile 5, styling panel transition bracket 8 and top cover styling baffle 9.

[0022] The heavy-duty component 3 is fixed on the bracket 1, and the bracket 1 is designed according to the structural and quantity requirements of the heavy-duty component.

[0023] The bracket 1 includes a longitudinal beam 11 and a lower support aluminum plate 12, which are welded or fixed by rivets. The lower support aluminum plate 12 is fixed on the top cover body 2 by a colloidal sealing and fixing material 4, and the longitudinal beam 11 is welded and fixed to the prefabricated profile 5.

[0024] The lower support aluminum plate 12 and the top cover body 2 are fixed by the colloidal sealing and fixing material 4 to avoid hard contact between the two, thereby avoiding wear; at the same time, it can make up for the gap caused by processing errors between the two and play a role in matching the arc. It can be seen from this structure that the top cover body 2 also participates in bearing the load of the heavy-duty component bracket 1, and the bearing area is surface contact, which is much better than the traditional point-fixed contact bearing.

[0025] As Figure 2 shown, a side beam 21 is provided on the top cover body 2, and the prefabricated profile 5 is installed on the side beam 21, which is designed to match according to the outer contour surface of the side beam 21, and at the same time, a groove 51 is designed on the upper surface. The prefabricated profile 5 is welded or fixed to the side beam 21 by rivets 6, and is also welded to the longitudinal beam 11 at the same time, so as to bear the load transmitted by the bracket 1.

[0026] As Figure 3 shown, the styling panel transition bracket 8 is fixed in the groove 51 by bolts 7, and at the same time, the styling panel transition bracket 8 is connected to the top cover styling baffle 9 by bolts 7; the prefabricated profile 5 is connected to the side beam 21 by welding or rivets 6; thus, the top cover styling baffle 9 is fixed on the top cover body 2 without other connecting plates.

[0027] The colloidal sealing and fixing material 4 of the present invention specifically includes sealant, structural adhesive, weather-resistant adhesive or other colloidal substances used for sealing.

Claims

1. A composite material top cover structure suitable for installing heavy components, characterized in that, Including: A bracket (1), a top cover body (2), a prefabricated profile (5), a styling plate transition bracket (8) and a top cover styling baffle (9); the bracket (1) includes a longitudinal beam (11) and a lower support aluminum plate (12), which are welded or fixed by rivets. The lower support aluminum plate (12) is fixed on the top cover body (2) by a colloidal sealing and fixing material (4). The longitudinal beam (11) is fixedly welded to the prefabricated profile (5); a side beam (21) is provided on the top cover body (2), and the prefabricated profile (5) is installed on the side beam (21) and fixed by welding or rivets (6); a styling plate transition bracket (8) is connected to the prefabricated profile (5), and a top cover styling baffle (9) is fixed on the styling plate transition bracket (8); the main material of the top cover structure is fiber-reinforced composite material or sandwich composite material; the styling plate transition bracket (8) and the top cover styling baffle (9) are fixed by bolts.

2. The composite material top cover structure suitable for installing heavy components according to claim 1, characterized in that: The prefabricated profile (5) is designed and matched according to the outer contour surface of the side beam (21), and a groove (51) is provided on the upper surface. The styling plate transition bracket (8) is fixed in the groove by bolts (7).

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