Laying and pressure applying device for acoustic covering layer on surface of aircraft and using method of laying and pressure applying device

Abstract

The invention provides a laying and pressure applying device for an acoustic covering layer on the surface of an aircraft and a using method of the laying and pressure applying device, and belongs to the field of aircraft noise reduction. The plurality of positioning plates are arranged on the ring body at intervals in the circumferential direction of the ring body; the plurality of pressing blocks are arranged on the positioning plate in a one-to-one correspondence manner; a plurality of covering parts are laid on the surface of the aircraft, and the pressing blocks are tightly attached to the covering parts respectively; the ring body is tightly hooped outside the aircraft and enables the pressing blocks to press and cover the covering pieces on the surface of the aircraft. According to the invention, the ring body is arranged outside the aircraft to tightly hoop the aircraft, so that the plurality of pressing blocks simultaneously press a circle of covering part to apply pressure, the laying efficiency of the acoustic covering layer is improved, uniform pressure can be applied to the circle of covering part, and the overall laying quality and surface flatness of the covering part are ensured; and due to the characteristic that the distance between the ring bodies is flexible and adjustable, the laying device can adapt to the surfaces of aircrafts with different convex body structures, is also suitable for covering parts with different specifications and sizes, and has good universality and adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction for vehicles, and particularly to a pressing device for laying an acoustic covering layer on the surface of a vehicle and a method for using the same. Background Art

[0002] In recent years, underwater sound absorption and insulation, as well as how to control the acoustic characteristics of underwater vehicles, have become research hotspots for scholars at home and abroad. Underwater vehicles play a very important role in both national defense security and scientific research. Therefore, how to reduce the radiated noise and acoustic target strength of underwater vehicles and improve their survivability is of great strategic significance for national security. Currently, the main method used to reduce underwater radiated noise and target strength is to lay an acoustic covering layer on its surface to suppress the vibration of the underwater vehicle itself and absorb detection sound waves, thereby reducing the possibility of the underwater vehicle being detected. Thus, correctly and reasonably laying the acoustic covering layer on the surface of the underwater vehicle is an important prerequisite for exerting the performance of the covering layer in regulating radiated noise and acoustic target strength.

[0003] Currently, there is still a large room for research and improvement in the laying devices for underwater vehicle acoustic covering layers in China. The laying of the acoustic covering layer is often achieved by means of adhesive bonding. For epoxy adhesives, polyurethane adhesives, etc., their bonding strength is high, but the curing time of the adhesive is long. When initially applying a pressing force to fix the acoustic covering layer, a heavy object is used for extrusion or a wooden square is used to rely on the on-site environment for pressing. The disadvantages of both are very obvious. The former is too time-consuming and laborious and requires the presence of a suitable heavy object nearby for operation. At the same time, this method cannot be used for the outer curved surface, which has limitations. The latter, due to the small volume of the wooden square, often results in uneven pressure application, so that the effective bonding area of the acoustic covering part fails to meet the requirements, causing the covering part to fall off.

[0004] Currently, the pressing device for laying the acoustic covering layer generally uses a pressing plate to act as a support and pressing function for pressing. Although the operation is convenient and the pressure application is uniform, it is only applicable to covering parts of a certain size. For covering parts of different sizes, devices specifically adapted need to be produced. The laying method is inefficient, time-consuming, and material-consuming. Moreover, when pressing, it only targets the covering parts in a certain area, and cannot consider the interaction between the covering parts, nor can it easily make the pressing effects of each covering part uniform. At the same time, the shape of the pressing plate is mostly a flat plate, which is difficult to perform the pressing work on curved covering parts. And the size of the pressing plate needs to be the same as that of the covering part, resulting in a small application range of the pressing plate. Summary of the Invention

[0005] In view of this, the present invention provides a pressing device for laying an acoustic covering layer on the surface of a vehicle and a method for using the same, which are used to solve the problems that at present, a pressing plate is used as a support for pressing, which is only applicable to covering parts of a certain size. For covering parts of different sizes, devices adapted to them need to be specially produced. Moreover, when pressing, only a certain area of the covering parts is considered, the interaction between the covering parts cannot be taken into account, and it is difficult to keep the pressing effect of each covering part unified, and the laying method is inefficient.

[0006] The technical solution of the present invention is realized as follows: The present invention provides a pressing device for laying an acoustic covering layer on the surface of a vehicle, including a ring body sleeved outside the vehicle; a plurality of positioning plates arranged at intervals along the ring body on the ring body; a plurality of pressing blocks respectively arranged on the positioning plates. Among them, a plurality of covering parts are laid on the surface of the vehicle, and each pressing block is respectively closely attached to each covering part; the ring body is tightly buckled outside the vehicle and each pressing block presses each covering part on the surface of the vehicle.

[0007] On the basis of the above technical solution, preferably, the ring body includes a first ring section arranged at the bottom of the vehicle; a second ring section arranged at the top of the vehicle; two third ring sections symmetrically arranged on both sides of the vehicle and located between the first ring section and the second ring section; wherein, the two ends of the third ring section are respectively connected to the adjacent ends of the first ring section and the second ring section, and the two third ring sections, the first ring section and the second ring section enclose the ring body; the length of the third ring section is adjusted according to the outer diameter of the vehicle in the length direction so that the ring body is tightly buckled outside the vehicle; a plurality of positioning plates are arranged on the first ring section, the second ring section and the third ring section.

[0008] More preferably, the ring body includes a connecting piece arranged between the connecting end of the third ring section and the first ring section or between the connecting end of the third ring section and the second ring section; wherein, both ends of the connecting piece extend along the length direction of the vehicle, and a sliding groove is opened on the connecting piece along its extending direction; the ends of the first ring section, the second ring section and the third ring section are inserted into the sliding groove and move along the sliding groove, and the ends of the first ring section, the second ring section and the third ring section are fastened and fixed on the connecting piece.

[0009] More preferably, the bottom of the vehicle is arranged on a bearing platform, and a manhole is opened on the top surface of the vehicle; two first ring sections and two second ring sections are arranged between adjacent connecting pieces, the bearing platform is located between the two first ring sections, and the manhole is located between the two first ring sections.

[0010] More preferably, two third ring sections are arranged between adjacent connecting pieces, and the distance between the two third ring sections is less than the distance between the two first ring sections and less than the distance between the two second ring sections.

[0011] More preferably, both ends of the connecting piece extend in an arc shape along the outer surface contour of the vehicle.

[0012] On the basis of the above technical solutions, preferably, the pressing block is closely attached to the center of the covering member.

[0013] On the basis of the above technical solutions, preferably, the surface of the pressing block in close contact with the covering member is a profiling surface.

[0014] On the basis of the above technical solutions, preferably, an elastic cushion layer is arranged on the surface of the pressing block in close contact with the covering member.

[0015] On the other hand, the present invention also provides a use method of a pressing device for laying an acoustic covering layer on the surface of a vehicle. Using the above-mentioned pressing device for laying an acoustic covering layer on the surface of a vehicle, it includes the following steps. Step 1, place the vehicle on the bearing platform. A manhole is opened on the top surface of the vehicle. Two first ring segments are arranged on the bottom surface of the vehicle. The bearing platform is located between the two first ring segments. Connecting pieces are respectively arranged at both ends of the two first ring segments. Two second ring segments are arranged on the top surface of the vehicle. The manhole is located between the two second ring segments. Connecting pieces are respectively arranged at both ends of the two second ring segments. Step 2, select the length of the third ring segment according to the outer diameter of the vehicle. Arrange two third ring segments between the first ring segment and the second ring segment. Set the two ends of the two third ring segments on the connecting pieces respectively. Pressing blocks are respectively arranged on each positioning plate. Each pressing block presses tightly on each covering member respectively. Step 3, after the covering member at the current position is pressed, remove one of the third ring segments and the pressing block thereon on each side. Move the connecting piece along the extending direction of the chute. Select the length of the third ring segment again according to the outer diameter of the vehicle and reinstall the new third ring segment and the pressing block thereon, and press the covering member at the new position.

[0016] The pressing device for laying an acoustic covering layer on the surface of a vehicle and its use method of the present invention have the following beneficial effects compared with the prior art:

[0017] (1) By arranging a ring outside the vehicle to tightly hoop the vehicle, the present invention enables several pressing blocks to simultaneously press a circle of covering members for pressing, which not only improves the pressing efficiency, but also can apply a uniform pressure to a circle of covering members, ensuring the mutual action pressing effect between the covering members. The same set of pressing devices can be used for covering members of different sizes.

[0018] (2) The present invention lays the covering members symmetrically on the left and right sides of the vehicle from bottom to top. According to the positions of different covering members, the installation positions of the ring segments at each place are adjusted to ensure that the pressing blocks are closely attached to the centers of the covering members. An elastic cushion plate is arranged on the close contact surface of the pressing blocks for transition to prevent the covering members from being damaged due to excessive pressure of the pressing blocks. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A perspective view of the pressing device for laying the acoustic covering layer of the present invention;

[0021] Figure 2 Another perspective view of the pressing device for laying the acoustic covering layer of the present invention;

[0022] Figure 3 A perspective view of the ring body of the present invention;

[0023] Figure 4 For the present invention Figure 3 An enlarged view of part A in

[0024] In the figure: 1, ring body; 11, first ring section; 12, second ring section; 13, third ring section; 14, connecting piece; 101, chute; 2, positioning plate; 3, covering member; 301, manhole; 4, bearing platform. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] As Figure 1 shown, in combination with Figure 2 , a pressing device for laying an acoustic covering layer on the surface of a vehicle includes a ring body 1, a positioning plate 2 and a pressing block.

[0027] Among them, a plurality of covering members 3 are laid on the surface of the vehicle. The covering members 3 are closely attached to the outer wall surface of the vehicle, so their shapes also match the outer contour of the vehicle.

[0028] The ring body 1 is sleeved outside the vehicle. Since the vehicle is usually streamlined or water droplet-shaped, the ring diameter of the ring body 1 needs to be adjusted according to the axial outer diameter of the vehicle. The material of the ring body 1 is selected as Q235 steel, with a width of 180 mm.

[0029] A number of positioning plates 2 are arranged on the ring body 1 at intervals along the ring body 1. The positioning plate 2 is a rectangular steel plate with two threaded holes. The width of the rectangular steel plate is 180 mm. The circular arc angle of the middle two steel plates is 10.62°, and the distance between the remaining steel plates is 7.31°. The distance between the two holes on the rectangular steel plate is 120 mm, and the hole diameter is M16.

[0030] A number of pressing blocks are correspondingly arranged on the positioning plates 2. The pressing blocks are connected to the positioning plates 2 through fastening bolts, and the bolts are all of the M20×80 model. Each pressing block is respectively in close contact with each covering part 3; the ring body 1 is tightly fastened outside the vehicle and enables each pressing block to press and cover each covering part 3 on the surface of the vehicle. Here, the pressing block can be a wooden square.

[0031] In Figure 3 In a preferred embodiment shown, the ring body 1 includes a first ring section 11, a second ring section 12 and a third ring section 13.

[0032] Among them, the first ring section 11 is arranged at the bottom of the vehicle. The outer circular curvature radius of the first ring section 11 is 2450 mm, the inner circular curvature radius is 2390 mm, and the circular arc corresponds to a central angle of 45.8°.

[0033] The second ring section 12 is arranged at the top of the vehicle. The outer circular curvature radius of the second ring section 12 is 2450 mm, the inner circular curvature radius is 2390 mm, and the circular arc corresponds to a central angle of 45.8°.

[0034] Two third ring sections 13 are symmetrically arranged on both sides of the vehicle and are located between the first ring section 11 and the second ring section 12; the two ends of the third ring section 13 are respectively connected to the adjacent ends of the first ring section 11 and the second ring section 12, and the two third ring sections 13 and the first ring section 11 and the second ring section 12 enclose the ring body 1; the length of the third ring section 13 is adjusted according to the outer diameter size of the vehicle along the length direction, so that the ring body 1 is tightly fastened outside the vehicle; a number of positioning plates 2 are arranged on the first ring section 11, the second ring section 12 and the third ring section 13. It should be noted that the first ring section 11 and the second ring section 12 can be made of materials that can undergo a certain amount of bending deformation, and then by adjusting the length of the third ring section 13, the ring body 1 formed by the four ring sections can be adjusted to different ring diameters according to the outer diameter of the vehicle.

[0035] In Figure 4 In a preferred embodiment shown, the ring body 1 further includes a connecting piece 14.

[0036] Among them, the connecting piece 14 is arranged between the connection end of the third ring section 13 and the first ring section 11 or between the connection end of the third ring section 13 and the second ring section 12; both ends of the connecting piece 14 extend along the length direction of the vehicle, and a chute 101 is opened on the connecting piece 14 along its extension direction.

[0037] The ends of the first ring segment 11, the second ring segment 12, and the third ring segment 13 are inserted into the sliding groove 101 and move along the sliding groove 101, and the ends of the first ring segment 11, the second ring segment 12, and the third ring segment 13 are firmly fixed to the connecting piece 14. When the above technical solution is adopted, the ring segments can move relative to each other, so as to adapt to the layout of different covering parts 3.

[0038] In Figure 2 In a preferred embodiment shown, since an acoustic layer needs to be laid on the vehicle, but the vehicle cannot be directly placed on the ground, a plurality of bearing platforms 4 are arranged along the length direction of the bottom of the vehicle to bear the vehicle. A manhole 301 is opened on the top surface of the vehicle, and the manhole 301 is the personnel entrance of the vehicle; two first ring segments 11 and two second ring segments 12 are arranged between adjacent connecting pieces 14. The bearing platform 4 is located between the two first ring segments 11, and the manhole 301 is located between the two first ring segments 11. Through the above design, the interference between the bearing platform 4 and the manhole 301 is avoided.

[0039] In Figure 3 In a preferred embodiment shown, two third ring segments 13 are arranged between adjacent connecting pieces 14. The distance between the two third ring segments 13 is less than the distance between the two first ring segments 11 and less than the distance between the two second ring segments 12. The reason is that the position where the third ring segment 13 exerts pressure does not need to avoid the bearing platform 4 and the manhole 301. Therefore, the layout of the covering part 3 is closer, and thus the positioning plates 2 on the two third ring segments 13 also need to be arranged more closely accordingly.

[0040] In Figure 1 In a preferred embodiment shown, both ends of the connecting piece 14 extend in an arc shape along the outer surface contour of the vehicle to fit the arc-shaped outer wall of the vehicle.

[0041] In Figure 1 In a preferred embodiment shown, the pressing block is closely attached to the center of the covering part 3 to ensure that the pressure exerted by each pressing block on the covering part 3 is more uniform, and to prevent the covering part 3 from not fully adhering to the surface of the vehicle.

[0042] In Figure 1 In a preferred embodiment shown, the surface of the pressing block in close contact with the covering part 3 is a profiling surface, so that the pressing block fits more closely to the outer surface of the covering part 3 to improve the uniformity of the pressure applied.

[0043] In Figure 1 In a preferred embodiment shown, an elastic cushion layer is provided on the surface of the pressing block in close contact with the covering part 3 to prevent the excessive pressure exerted by the pressing block from possibly damaging the covering part 3 and destroying the noise reduction effect of the acoustic covering layer of the vehicle.

[0044] As Figure 1 shown, in combination with Figure 2, A method for using a pressing device for applying an acoustic covering layer on the surface of a vehicle, which adopts the pressing device for applying an acoustic covering layer on the surface of a vehicle in any of the above embodiments, includes the following steps.

[0045] Step 1: Place the vehicle on the bearing platform 4. A manhole 301 is provided on the top surface of the vehicle. Two first ring segments 11 are arranged on the bottom surface of the vehicle. The bearing platform 4 is located between the two first ring segments 11. Connecting pieces 14 are respectively arranged at both ends of the two first ring segments 11. Two second ring segments 12 are arranged on the top surface of the vehicle. The manhole 301 is located between the two second ring segments 12. Connecting pieces 14 are respectively arranged at both ends of the two second ring segments 12. Install the first ring segment 11 and the second ring segment 12 on the outer wall of the vehicle by avoiding the bearing platform 4 and the manhole 301, which also pre-positions the installation position of the third ring segment 13 at the same time.

[0046] Step 2: Select the length of the third ring segment 13 according to the outer diameter of the vehicle. Arrange two third ring segments 13 between the first ring segment 11 and the second ring segment 12. Set the two ends of the two third ring segments 13 on the connecting pieces 14 respectively. Pressing blocks are arranged on each positioning plate 2, and each pressing block presses tightly on each covering member 3.

[0047] Step 3: After pressing the covering member 3 at the current position, remove one of the third ring segments 13 and the pressing block thereon on each side, move the connecting piece 14 along the extending direction of the sliding groove 101, re-select the length of the third ring segment 13 according to the outer diameter of the vehicle and reinstall the new third ring segment 13 and the pressing block thereon, and press the covering member 3 at the new position; during the pressing process, when adjusting the pressing position each time, the position of one ring body 1 is fixed, so that the pressing position of the other ring body 1 can be positioned to ensure the unity of the pressing effect of each covering member 3 on the surface of the entire vehicle.

[0048] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An application pressing device for an acoustic covering layer on the surface of a vehicle, characterized in that Comprising: A ring body (1), sleeved outside the vehicle; A plurality of positioning plates (2), arranged at intervals along the ring body (1) on the ring body (1); A plurality of pressing blocks, correspondingly arranged on the positioning plates (2); Wherein, a plurality of covering parts (3) are laid on the surface of the vehicle, and each pressing block is respectively closely attached to each covering part (3); The ring body (1) is tightly fastened outside the vehicle and enables each pressing block to press and cover each covering part (3) on the surface of the vehicle.

2. The pressing device for applying an acoustic covering layer on the surface of a vehicle according to claim 1, characterized in that: The ring body (1) includes, A first ring section (11), arranged at the bottom of the vehicle; A second ring section (12), arranged at the top of the vehicle; Two third ring sections (13), symmetrically arranged on both sides of the vehicle and located between the first ring section (11) and the second ring section (12); Wherein, two ends of the third ring section (13) are respectively connected to adjacent ends of the first ring section (11) and the second ring section (12), and the two third ring sections (13), the first ring section (11) and the second ring section (12) enclose the ring body (1); the length of the third ring section (13) is adjusted according to the outer diameter size of the vehicle in the length direction, so that the ring body (1) is tightly fastened outside the vehicle; A plurality of the positioning plates (2) are arranged on the first ring section (11), the second ring section (12) and the third ring section (13).

3. The pressing device for applying an acoustic covering layer on the surface of a vehicle according to claim 2, characterized in that: The ring body (1) includes, A connecting piece (14), arranged between the connecting end of the third ring section (13) and the first ring section (11) or between the connecting end of the third ring section (13) and the second ring section (12); Wherein, two ends of the connecting piece (14) extend along the length direction of the vehicle, and a sliding groove (101) is opened on the connecting piece (14) along its extending direction; The ends of the first ring section (11), the second ring section (12) and the third ring section (13) are inserted into the sliding groove (101) and move along the sliding groove (101), and the ends of the first ring section (11), the second ring section (12) and the third ring section (13) are fastened and fixed on the connecting piece (14).

4. The pressing device for applying an acoustic covering layer on the surface of a vehicle, according to claim 3, characterized in that: The bottom of the vehicle is arranged on a bearing platform (4), and a manhole (301) is opened on the top surface of the vehicle; Two first ring sections (11) and two second ring sections (12) are arranged between adjacent connecting pieces (14), the bearing platform (4) is located between the two first ring sections (11), and the manhole (301) is located between the two first ring sections (11).

5. The pressing device for applying an acoustic covering layer on the surface of a vehicle according to claim 4, characterized in that: Two third ring sections (13) are arranged between adjacent connecting pieces (14), and the distance between the two third ring sections (13) is less than the distance between the two first ring sections (11) and less than the distance between the two second ring sections (12).

6. The pressing device for applying an acoustic coating on the surface of a vehicle, according to claim 3, wherein: Two ends of the connecting piece (14) extend in an arc shape along the outer surface contour of the vehicle.

7. The pressing device for applying an acoustic covering layer on the surface of a vehicle, according to claim 1, wherein: The pressing block is closely attached to the center of the covering part (3).

8. The pressing device for applying an acoustic coating on the surface of a vehicle, according to claim 1, wherein: The surface of the pressing block in close contact with the covering part (3) is a profiling surface.

9. The pressing device for applying an acoustic covering layer on the surface of a vehicle, according to claim 1, wherein: An elastic cushion layer is arranged on the surface of the pressing block in close contact with the covering part (3).

10. A method for using a pressing device for applying an acoustic covering layer on the surface of a vehicle, characterized in that: Adopting the pressing device for laying the acoustic covering layer on the surface of the vehicle according to any one of claims 3 to 6, comprising the following steps, Step 1: Place the aircraft on the carrier (4). A manhole (301) is provided on the top surface of the aircraft. Two first ring segments (11) are provided on the bottom surface of the aircraft. The carrier (4) is located between the two first ring segments (11). Connecting pieces (14) are respectively provided at both ends of the two first ring segments (11). Two second ring segments (12) are provided on the top surface of the aircraft. The manhole (301) is located between the two second ring segments (12). Connecting pieces (14) are respectively provided at both ends of the two second ring segments (12). Step 2: Select the length of the third ring segment (13) according to the outer diameter of the aircraft. Two third ring segments (13) are provided between the first ring segment (11) and the second ring segment (12). The two ends of the two third ring segments (13) are respectively arranged on the connecting pieces (14). Pressing blocks are respectively provided on each positioning plate (2). Each pressing block tightly presses on each covering member (3). Step 3: After pressing the covering member (3) at the current position, remove one of the third ring segments (13) and the pressing block thereon from each side. Move the connecting piece (14) along the extending direction of the sliding groove (101). Re-select the length of the third ring segment (13) according to the outer diameter of the aircraft and reinstall the new third ring segment (13) and the pressing block thereon, and press the covering member (3) at the new position.

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