Novel car roof acoustic shield

Abstract

The utility model relates to the technical field of car roof sound insulation covers, in particular to a novel car roof sound insulation cover which comprises a sound insulation cover body, reinforcing ribs are installed on the inner wall of the sound insulation cover body, the sound insulation cover body comprises a sound insulation aluminum plate, a first light sound insulation pad is bonded to the bottom of the sound insulation aluminum plate, and a glass panel is bonded to the bottom of the first light sound insulation pad. And a second light sound insulation pad is adhered to the bottom of the glass panel. According to the improved car roof acoustic hood, the acoustic hood is adopted, the skin of a traditional acoustic hood is changed from a 1 mm steel plate to a 2 mm aluminum plate, the weight can be reduced by about 10 Kg / set, the weight of the acoustic hood can be reduced, and meanwhile the overall strength of the acoustic hood can be improved; by the adoption of the reinforcing ribs, the overall strength and rigidity of the acoustic shield can be improved, the anti-pressure capacity of the surface is improved, the arrangement structure of the internal sound insulation materials is optimized, the overall strength and the surface quality are improved while the self weight of the acoustic shield is reduced, and the sound insulation performance is ensured.

Description

Technical Field

[0001] This utility model relates to the field of vehicle roof sound insulation cover technology, specifically a novel vehicle roof sound insulation cover. Background Technology

[0002] In order to reduce the transmission of pantograph noise into the passenger compartment when the high-speed rail passenger train is running, a soundproof cover is installed on the aluminum structure of the car body at the pantograph position on the roof of the high-speed rail passenger train.

[0003] Traditional soundproof enclosures are composed of 1mm steel plates, 5mm lightweight sound insulation pads, 12mm glass wool, 1.6mm aluminum fiber sound-absorbing panels, 1.2mm lightweight sound insulation pads, 5mm lightweight sound insulation pads, and adhesives. The soundproof enclosure is installed on the top of the outside of the carriage to block the adverse effects of external noise on passengers and to reduce noise.

[0004] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. The existing soundproof enclosure is too heavy and can no longer meet the requirements of vehicle weight reduction to improve operating speed; 2. The existing soundproof enclosure has insufficient strength in its overall structure, which makes it inconvenient to lift and easily damages the soundproof enclosure during lifting. Utility Model Content

[0005] The purpose of this utility model is to provide a novel vehicle roof sound insulation cover to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a novel vehicle roof sound insulation cover, including a sound insulation cover, wherein the inner wall of the sound insulation cover is equipped with reinforcing ribs.

[0006] The soundproof cover includes a soundproof aluminum plate, a first lightweight soundproof pad is bonded to the bottom of the soundproof aluminum plate, a glass panel is bonded to the bottom of the first lightweight soundproof pad, and a second lightweight soundproof pad is bonded to the bottom of the glass panel.

[0007] More preferably, the reinforcing rib is welded from 40mm×20mm×3mm aluminum square tube and aluminum profile.

[0008] More preferably, the thickness of the sound-insulating aluminum plate is set to 2mm, and a total of 4 plates are provided.

[0009] More preferably, the thickness of the first lightweight sound insulation pad is set to 7mm, and the thickness of the second lightweight sound insulation pad is set to 5mm.

[0010] More preferably, the thickness of the glass panel is set to 12mm, and the material of the glass panel is glass wool with a density of 80kg / m3.

[0011] More preferably, the upper surface of the soundproof aluminum plate is riveted with 10 small mounting bases.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, the traditional soundproof enclosure's skin is replaced with a 2mm aluminum plate instead of a 1mm steel plate, which reduces the weight by approximately 10kg per unit. At the same time, it improves the overall strength and rigidity of the soundproof enclosure. Combined with a 7mm first lightweight soundproof pad, a 5mm second lightweight soundproof pad, and a 12mm glass panel with a weight of 80kg / m3, the soundproofing effect of the enclosure is maintained while reducing weight.

[0014] In this utility model, the reinforcing ribs are welded from 40mm×20mm×3mm-6063-T aluminum square tubes and aluminum profiles. There are a total of 4 sound-insulating aluminum plates. The sound-insulating aluminum plates and reinforcing ribs are bonded together with structural adhesive, and then riveted with drilled rivet holes. This improves the overall strength and rigidity of the soundproof cover, increases the compressive strength of the surface, optimizes the product and reduces weight, facilitates hoisting and transportation for customers, and improves the appearance quality of the product to a certain extent. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the reinforcing rib structure of this utility model;

[0017] Figure 3 This is a partial enlarged cross-sectional view of the soundproof cover of this utility model.

[0018] In the diagram: 1. Soundproof cover; 101. Soundproof aluminum plate; 102. First lightweight soundproof pad; 103. Glass panel; 104. Second lightweight soundproof pad; 2. Reinforcing rib. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 The present invention provides a technical solution: a novel roof soundproof cover, including a soundproof cover 1, wherein the inner wall of the soundproof cover 1 is equipped with reinforcing ribs 2.

[0021] The soundproof cover 1 includes a soundproof aluminum plate 101, a first lightweight soundproof pad 102 is bonded to the bottom of the soundproof aluminum plate 101, a glass panel 103 is bonded to the bottom of the first lightweight soundproof pad 102, and a second lightweight soundproof pad 104 is bonded to the bottom of the glass panel 103.

[0022] In this embodiment, as Figure 2 As shown, the reinforcing rib 2 is welded from 40mm×20mm×3mm aluminum square tubes and aluminum profiles; the aluminum square tube material of the reinforcing rib 2 is 6063-T6, which can support the soundproof cover 1 and improve the overall strength of the soundproof cover.

[0023] In this embodiment, as Figure 3 As shown, the thickness of the sound insulation aluminum plate 101 is set to 2mm, and there are a total of 4 pieces; the sound insulation aluminum plate 101 and the reinforcing rib 2 are bonded together with structural adhesive and then riveted with drilled rivet holes, which improves the overall strength and rigidity of the sound insulation cover and increases the compressive strength of the surface.

[0024] In this embodiment, as Figure 3 As shown, the thickness of the first lightweight sound insulation pad 102 is set to 7mm, and the thickness of the second lightweight sound insulation pad 104 is set to 5mm. The lightweight sound insulation pad is a material used to isolate sound transmission. It has the characteristics of being lightweight and having good sound insulation effect, which can improve the sound insulation effect of the soundproof cover.

[0025] In this embodiment, as Figure 3 As shown, the thickness of the glass panel 103 is set to 12mm, and the material of the glass panel 103 is 80kg / m³. 3 Glass wool has a porous fiber structure. When sound waves are incident on the glass wool, they cause the air in the pores to vibrate. Due to the friction and viscous resistance between the air and the fibers, the sound energy is converted into heat energy and consumed, thus effectively absorbing sound and reducing the noise intensity of the soundproof enclosure.

[0026] In this embodiment, as Figure 1 and Figure 3 As shown, the upper surface of the soundproof aluminum plate 101 is riveted with 10 small mounting bases; all openings are flanged, and all welded parts have reinforcing ribs 2 at the bottom, which can improve the overall strength and rigidity of the soundproof cover and at the same time avoid damage to the soundproof cover during installation.

[0027] The method of use and advantages of this utility model: The working process of this new type of car roof soundproof cover is as follows:

[0028] like Figure 1 , Figure 2 and Figure 3As shown, the roof soundproof cover is first directly installed on the flat-top aluminum structure of the vehicle. The soundproof cover is then connected to the aluminum structure with bolts. The reinforcing rib 2 can support the soundproof cover 1. The 2mm soundproof aluminum plate 101 improves the overall strength and rigidity of the soundproof cover and increases the surface compressive strength. While optimizing and reducing the weight of the soundproof cover, it is convenient for hoisting and transportation, and it also improves the appearance quality of the product to a certain extent. The first lightweight soundproof pad 102 and the second lightweight soundproof pad 104, together with the glass panel 103, can effectively play a soundproofing role and improve the soundproofing effect of the soundproof cover 1.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel roof sound insulation cover, comprising a sound insulation cover (1), characterized in that: The inner wall of the soundproof cover (1) is equipped with reinforcing ribs (2); The soundproof cover (1) includes a soundproof aluminum plate (101), a first lightweight soundproof pad (102) is bonded to the bottom of the soundproof aluminum plate (101), a glass panel (103) is bonded to the bottom of the first lightweight soundproof pad (102), and a second lightweight soundproof pad (104) is bonded to the bottom of the glass panel (103).

2. The novel roof sound insulation cover according to claim 1, characterized in that: The reinforcing rib (2) is welded from 40mm×20mm×3mm aluminum square tube and aluminum profile.

3. The novel roof sound insulation cover according to claim 1, characterized in that: The thickness of the soundproof aluminum plate (101) is set to 2mm, and a total of 4 plates are provided.

4. The novel roof sound insulation cover according to claim 1, characterized in that: The thickness of the first lightweight sound insulation pad (102) is set to 7 mm, and the thickness of the second lightweight sound insulation pad (104) is set to 5 mm.

5. The novel roof sound insulation cover according to claim 1, characterized in that: The thickness of the glass panel (103) is set to 12mm, and the material of the glass panel (103) is glass wool with a weight of 80kg / m3.

6. The novel roof sound insulation cover according to claim 1, characterized in that: The upper surface of the soundproof aluminum plate (101) is riveted with 10 small mounting bases.

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