Suspended base, aerodynamic nacelle and installation method of aerodynamic nacelle

Abstract

The invention belongs to the technical field of hoverships, and discloses a suspended base, an aerodynamic nacelle and an installation method thereof.The suspended base comprises webs, panels and transverse reinforcements which are arranged in a pairwise perpendicular mode, one web and one panel form a set of side supports, the two ends of the transverse reinforcements are each provided with one set of side supports, and the webs and the panels are arranged in a pairwise perpendicular mode. The transverse reinforcement is connected to the web plate, and a penetrating space is formed between the two sets of side supports. Through the arrangement of the web plate, the panel, the transverse reinforcement and the penetrating space, suspension can be achieved, an existing base structure is effectively simplified, the occupied space can be effectively reduced after the air power nacelle is installed in the air power nacelle subsequently, and stable installation of power equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hovercrafts, and particularly to a suspended base, an aerodynamic nacelle and an installation method thereof. Background Art

[0002] In hovercrafts, aerodynamic nacelles are often used to carry some propulsion power equipment, and most of the aerodynamic nacelles are oblong structures, which can be roughly divided into a reducer base, a nacelle cover and a cover body structure. Among them, to ensure the high-precision installation requirements of subsequent equipment, the reducer base needs to focus on controlling the accuracy of its own level, height, width, etc. However, in the prior art, the propulsion reducer base and the housing structure are usually installed in loose parts, and in the case of concentrated subsequent welding and insufficient structural rigidity constraints, it is difficult to control the structural deformation caused by welding, thus affecting the accuracy, resulting in too low installation efficiency for subsequent series operations, etc. At the same time, the current reducer base is difficult to ensure the installation of subsequent reducer equipment in a small space, resulting in excessive space waste. Therefore, how to improve the reducer base so that the reducer equipment can be installed in a smaller space and the accuracy during the installation process of the reducer base can be effectively guaranteed, and the welding deformation can be effectively controlled is a problem that needs to be solved by those skilled in the art at present. Summary of the Invention

[0003] The purpose of the present invention is to provide a suspended base, an aerodynamic nacelle and an installation method thereof to improve the reducer base so that the reducer equipment can be installed in a smaller space and the accuracy during the installation process of the reducer base can be effectively guaranteed, and the welding deformation can be effectively controlled.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] Suspended base, which includes:

[0006] Webs, panels and transverse reinforcements that are perpendicular to each other in pairs. One of the webs and one of the panels are set as a group of side supports. Both ends of the transverse reinforcement are respectively provided with a group of the side supports. The transverse reinforcement is connected to the web, and there is a through space between the two groups of side supports.

[0007] Optionally, it further includes a web reinforcement. One end of the web reinforcement is connected to the transverse reinforcement, and the other end is connected to the panel, and the web reinforcement supports the outside of the web.

[0008] Optionally, the web reinforcement is arranged parallel to the transverse reinforcement.

[0009] Optionally, the transverse reinforcement is arranged at one end of the side support, and the other end of the side support is a free end.

[0010] Optionally, the top surface of the web is a plane, the bottom surface is a curved surface, and the distance between the top surface and the bottom surface gradually increases from one end of the web where the transverse reinforcement is provided to the other end.

[0011] As an option, the panel is arranged on the top surface of the web, and the width of the panel gradually increases from one end of the side support where the transverse reinforcement is arranged to the other end thereof.

[0012] As an option, the web is provided with an arc-shaped portion and a connecting portion, the panel is connected to the arc-shaped portion, and the two ends of the transverse reinforcement are respectively fixed at the connecting portions of the two webs.

[0013] As an option, the through space is arranged to penetrate up and down along the height direction of the web.

[0014] An aerodynamic nacelle includes a suspended base, a shell and a hatch cover, wherein the shell and the hatch cover are connected by bolts, and the web and the panel in the suspended base are inserted into the shell.

[0015] The method for installing a suspended base comprises the following steps:

[0016] S1, fixing the panel, web and transverse reinforcement in the suspended base on the tire frame in sequence;

[0017] S2, fillet welds are made at three locations a, b, and c on both sides of the web, and then fillet welds are made at three locations d, e, and f on both sides;

[0018] S3, weld the butt weld at g, and then perform fillet weld at h;

[0019] S4, the suspended base is molded, and the support reinforcement is installed between the two sets of side supports;

[0020] S5, hoisting the suspended base to the shell of the aerodynamic nacelle, and positioning it left and right using the assumed axis, and positioning it front and back using the rib inspection line, and then determining and checking the height difference L1 between the panel and the assumed axis, and the spacing L2 between the panel and the assumed axis;

[0021] S6. After installing the auxiliary reinforcement on the suspended base, fix the suspended base in the aerodynamic nacelle;

[0022] S7. After welding is completed, the auxiliary reinforcement is removed, and the height L1 between the panel and the assumed axis, as well as the distance L2 between the panel and the assumed axis are rechecked.

[0023] Beneficial effects of the present invention:

[0024] In the present invention, the suspended base is provided with a web, a panel and transverse reinforcement, and is provided with a through space to achieve suspension, which can effectively simplify the existing base structure, and can effectively reduce the occupied space after being subsequently installed in the aerodynamic nacelle, and ensure the stable installation of the power equipment. Specifically, in the present invention, the shell of the aerodynamic nacelle and the suspended base can be inserted and connected under the action of the web and the panel, so that the power equipment can be stably installed in a narrow space, and the overall structure of the aerodynamic nacelle is more compact and stable, avoiding space waste. Further, the present invention uses a jig to weld and install the suspended base, and then cooperates with a hypothetical axis for installation positioning, and uses auxiliary reinforcement to constrain the structural rigidity thereof, which can ensure that the installation accuracy of the suspended base meets the requirements while avoiding the problem that the welding deformation cannot be controlled, thereby improving the overall operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the aerodynamic nacelle according to an embodiment of the present invention;

[0026] Figure 2 is a side view schematic diagram of the suspended base according to an embodiment of the present invention;

[0027] Figure 3 is a front view schematic diagram of the suspended base according to an embodiment of the present invention;

[0028] Figure 4 is a top view schematic diagram of the suspended base according to an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of the suspended base on the jig according to an embodiment of the present invention;

[0030] Figure 6 is a welding sequence diagram of the web in the suspended base according to an embodiment of the present invention;

[0031] Figure 7 is a schematic diagram of the installation of the support reinforcement in the suspended base according to an embodiment of the present invention;

[0032] Figure 8 is a schematic diagram of the hoisting installation of the suspended base according to an embodiment of the present invention;

[0033] Figure 9 is a schematic diagram of the installation positioning of the suspended base according to an embodiment of the present invention;

[0034] Figure 10 is a front view when the auxiliary reinforcement is installed on the suspended base according to an embodiment of the present invention;

[0035] Figure 11 is a side view when the auxiliary reinforcement is installed on the suspended base according to an embodiment of the present invention;

[0036] Figure 12 It is a top view when the hanging base in the embodiment of the present invention is installed with auxiliary reinforcement.

[0037] In the figure:

[0038] 100 - Hanging base; 200 - Housing; 300 - Hatch cover; 410 - Jig base; 420 - Jig body; 430 - Compression member; 440 - Screw puller; 201 - Hypothetical axis

[0039] 10 - Web; 20 - Panel; 30 - Transverse reinforcement; 40 - Web reinforcement; 50 - Support reinforcement; 60 - First horizontal reinforcement; 70 - Diagonal reinforcement; 80 - Second horizontal reinforcement. Detailed implementation manners

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] In the description of the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0043] The technical solutions of this embodiment will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0044] As Figures 1-12As shown in the figure, this embodiment provides a suspended base 100, an aerodynamic nacelle and an installation method thereof. The suspended base 100 includes a web 10, a panel 20 and a transverse reinforcement 30 which are perpendicular to each other in pairs. One web 10 and one panel 20 are set as a group of side supports. A group of side supports are respectively arranged at both ends of the transverse reinforcement 30. The transverse reinforcement 30 is connected to the web 10, and a through space is arranged between the two groups of side supports.

[0045] The aerodynamic nacelle includes a suspended base 100, a housing 200 and a hatch 300. The housing 200 and the hatch 300 are bolted together. The web 10 and the panel 20 in the suspended base 100 are inserted into the housing 200.

[0046] The installation method of the suspended base includes the following steps:

[0047] S1. Fix the panel 20, the web 10 and the transverse reinforcement 30 in the suspended base 100 to the jig in sequence;

[0048] S2. Perform fillet welds at three places a, b, and c on both sides of the web 10, and then perform fillet welds at three places d, e, and f on both sides;

[0049] S3. Weld the butt joint at g, and then perform fillet weld at h;

[0050] S4. Remove the suspended base 100 from the jig, and install the support reinforcement 50 between the two groups of side supports;

[0051] S5. Lift the suspended base 100 to the housing 200 of the aerodynamic nacelle, and perform left - right positioning using the assumed axis 201, and perform front - rear positioning using the rib inspection line. Then determine and review the height difference L1 between the panel 20 and the assumed axis 201, and the distance L2 between the panel 20 and the assumed axis 201;

[0052] S6. After installing the auxiliary reinforcement on the suspended base 100, fix the suspended base 100 in the aerodynamic nacelle;

[0053] S7. After welding is completed, remove the auxiliary reinforcement, and review the height L1 between the panel 20 and the assumed axis 201 again, and the distance L2 between the panel 20 and the assumed axis 201.

[0054] Specifically, in this embodiment, the suspended base 100 is provided with a web 10, a panel 20, and a transverse reinforcement 30, and is provided with a through space to achieve suspension, which can effectively simplify the existing base structure, and can effectively reduce the occupied space after being subsequently installed in the aerodynamic nacelle, and ensure the stable installation of the power equipment. Specifically, in this embodiment, the shell 200 of the aerodynamic nacelle and the suspended base 100 can be inserted and connected under the action of the web 10 and the panel 20, so that the power equipment can be stably installed in a narrow space, making the overall structure of the aerodynamic nacelle more compact and stable, and avoiding space waste. Further, in this embodiment, the suspended base 100 is welded and installed using a jig, and then installed and positioned in cooperation with the assumed axis 201, and the structural rigidity is constrained using auxiliary reinforcement, which can ensure that the installation accuracy of the suspended base 100 meets the requirements while avoiding the problem that the welding deformation cannot be controlled, thereby improving the overall operation efficiency.

[0055] The specific structure of the suspended base in this embodiment will be described below.

[0056] As Figures 1-4 shown, in this embodiment, the suspended base 100 includes a web 10, a panel 20, a transverse reinforcement 30, and a web reinforcement 40. Specifically, in this embodiment, both the web 10 and the panel 20 extend along the first direction, and both the transverse reinforcement 30 and the web reinforcement 40 extend along the second direction. The first direction and the second direction are perpendicular to each other, and in this embodiment, the horizontal direction is set as the first direction, and the vertical direction is set as the second direction. Further, in this embodiment, the web 10 and the panel 20 are also perpendicular to each other. Specifically, in this embodiment, the web 10, the panel 20, and the transverse reinforcement 30 are perpendicular to each other in pairs.

[0057] Specifically, in this embodiment, a web 10 and a panel 20 are set as a set of side supports, and a set of side supports are respectively set at both ends of the transverse reinforcement 30, and the transverse reinforcement 30 is connected to the web 10 in each set of side supports, and a through space is set between the two sets of side supports, which is convenient for subsequent plug-in connection to the shell 200 of the aerodynamic nacelle. Exemplarily, in this embodiment, one end of the web reinforcement 40 is connected to the transverse reinforcement 30, and the other end is connected to the panel 20, and the web reinforcement 40 is supported on the outside of the web 10, so that under the action of the web reinforcement 40, the mechanical strength of the web 10, the panel 20 and the transverse reinforcement 30 can be effectively improved, thereby improving the stability of the overall structure. Further, the web reinforcement 40 is arranged in parallel with the transverse reinforcement 30, and both are arranged at the same end of the side support, and the other end of the side support is a free end. Combined with the setting of the through space, one end of the suspended base 100 is a suspended structure, which provides effective and stable support for the reducer and is convenient for plug-in connection. Exemplarily, the web reinforcement 40 and the transverse reinforcement 30 are located on the same horizontal plane to improve precision control. In other embodiments, the distance between the two may also be adjusted accordingly, which is not limited here.

[0058] like Figure 2 and Figure 3 As shown, in this embodiment, the top surface of the web 10 is set as a plane, and the bottom surface is set as a curved surface. Specifically, the spacing between the top surface and the bottom surface gradually increases along the direction from one end of the web 10 where the transverse reinforcement 30 is provided to the other end, so as to provide a stable support effect. Exemplarily, in this embodiment, a first avoidance groove is provided on the side of the web 10 away from the transverse reinforcement 30, so as to cooperate with the plug-in structure in the shell 200 to achieve stable plug-in. Optionally, the web 10 and the panel 20 are connected by welding. Specifically, the web 10 is provided with an arc portion and a connecting portion, the panel 20 is connected to the top outer side of the arc portion, and the connecting portion is provided at the bottom end of the arc portion, and the width direction of the connecting portion is the same as the second direction. Specifically, the two ends of the transverse reinforcement 30 are respectively fixed at the connecting portions of the two webs 10, so that the stable connection between the transverse reinforcement 30 and the web 10 can be ensured under the action of the connecting portion. Exemplarily, the web 10 is an integrated structure to ensure its mechanical strength, and the curvature of the arc portion is set as needed to facilitate subsequent plug-in, while realizing a curved setting of the suspended base 100 to reduce stress.

[0059] Combination Figure 3 and Figure 4As shown, in this embodiment, the panel 20 is disposed on the top surface of the web 10, and the length of the panel 20 is adapted to the length of the web 10. The width of the panel 20 gradually increases in the direction from one end where the transverse reinforcement 30 is disposed along the side support to the other end, so as to be able to cover the top of the web 10 and increase the insertion area with the housing 200, thereby ensuring the stable installation of the suspended base 100 in the housing 200 and ensuring the stable support of equipment such as a speed reducer. Exemplarily, a second avoidance groove is provided at one end of the panel 20 away from the transverse reinforcement 30, so as to cooperate with the insertion structure in the housing 200 to achieve stable insertion. In this embodiment, the shape and structure of the panel 20 can be set as needed, and will not be elaborated here.

[0060] As Figures 1-4 shown, in this embodiment, the two side supports are spaced apart, and one end is connected by the transverse reinforcement 30 and the web reinforcement 40, and the middle part and the other end are suspended. Specifically, the through space is vertically penetrated along the height direction of the web 10, that is, the through space is penetrated along the second direction in the suspended base 100, so as to achieve the suspended setting, and further ensure that the suspended base 100 can be inserted into the housing 200. As Figure 3 shown, exemplarily, in this embodiment, both the transverse reinforcement 30 and the web reinforcement 40 are provided as arc-shaped structures, and the radian of both is adapted to the radian of the arc part in the web 10, so that the web reinforcement 40 can better fit on the outside of the arc part and provide stable support for the web 10. Specifically, in this embodiment, the side supports and the web reinforcements 40 are provided in one-to-one correspondence, that is, two web reinforcements 40 are also provided, and the left side, the inner arc side and the right side of each web reinforcement 40 are respectively connected to the transverse reinforcement 30, the web 10 and the panel 20, so as to improve the stability of the overall structure of the suspended base 100. Exemplarily, the transverse reinforcement 30 and the web reinforcement 40 are also installed on the web 10 and the panel 20 by welding.

[0061] The specific structure of the aerodynamic nacelle in this embodiment will be described below.

[0062] As Figure 1 shown, in this embodiment, the aerodynamic nacelle includes the above-mentioned suspended base 100, the housing 200 and the hatch cover 300, and the housing 200 and the hatch cover 300 are bolted. The web 10 and the panel 20 in the suspended base 100 can be inserted into the housing 200, so as to achieve the stable connection of the three in the aerodynamic nacelle and provide effective support for equipment such as a speed reducer.

[0063] The installation method of the suspended base in this embodiment will be described below.

[0064] Combined with Figures 5-12 shown, the installation method of the suspended base in this embodiment includes the following steps:

[0065] S1. Fix the panel 20, web 10, and transverse reinforcement 30 in the suspended base 100 to the jig in sequence.

[0066] S2. Perform fillet welds at three locations a, b, and c on both sides of the web 10, and then perform fillet welds at three locations d, e, and f on both sides.

[0067] S3. Weld the butt joint at location g, and then perform a fillet weld at h.

[0068] S4. Remove the suspended base 100 from the jig and install the support reinforcement 50 between two sets of side supports.

[0069] S5. Lift and hoist the suspended base 100 to the shell 200 of the aerodynamic nacelle, perform left - right positioning using the assumed axis 201, and perform front - rear positioning using the rib inspection line. Then, determine and recheck the height L1 between the panel 20 and the assumed axis 201, and the spacing L2 between the panel 20 and the assumed axis 201.

[0070] S6. After installing auxiliary reinforcement on the suspended base 100, fix the suspended base 100 in the aerodynamic nacelle.

[0071] S7. After welding is completed, remove the auxiliary reinforcement and recheck the height L1 between the panel 20 and the assumed axis 201, and the spacing L2 between the panel 20 and the assumed axis 201.

[0072] As Figure 5 shown, in this embodiment, the jig includes a jig base 410, a jig body 420, a pressing member 430, and a screw puller 440. Optionally, the jig body 420 is set as an arc - shaped structure and fixed on the jig base 410. The pressing member 430 is set on the jig base 410 with adjustable height, and the screw puller 440 is set on the jig body 420 adjustably. Exemplarily, at least two pressing members 430 are provided and are respectively located on both sides of the jig body 420. A plurality of screw pullers 440 are provided and are arranged along the circumferential direction of the jig body 420 on the inner side of the jig body 420. Further, the screw pullers 440 are arranged along the radial direction of the jig body 420.

[0073] Step S1 further includes:

[0074] S1.1. Use the pressing member 430 on the jig to fix the two panels 20 in the suspended base 100 to the jig base 410 respectively.

[0075] S1.2. Use the screw puller 440 on the jig to fix the two webs 10 to the jig body 420 respectively.

[0076] S1.3. There is also a web reinforcement 40 provided in the suspended base 100, and the web reinforcement 40 is fixed to the outside of the web 10 by spot welding.

[0077] S1.4. Once again, use the screw jack 440 to fix the transverse reinforcement 30 on the jig body 420 between the two webs 10.

[0078] Thus, while ensuring the stable positioning of the panel 20, the web 10, the web reinforcement 40, and the transverse reinforcement 30 are successively installed and fixed, which can effectively ensure the stable fitting between the web 10, the web reinforcement 40, and the transverse reinforcement 30 and the jig body 420, and improve their installation accuracy.

[0079] As Figure 6 shown, further, welding lines a, b, c, d, e, f, g, and h are successively and spacedly divided on the web 10, and the web 10 is welded to the panel 20, the web 10 is welded to the transverse reinforcement 30, and the web 10 is welded to the web reinforcement 40 according to steps S2 and S3, so as to improve the connection strength of the overall structure. Further, by welding from the inside to the outside at the front end of the web 10, then welding from the inside to the outside at the rear end of the web 10, and finally performing fillet welding at the butt joint g and the upper surface h, it can effectively reduce the structural deformation generated during the welding process and improve the overall welding quality of the suspended base 100.

[0080] As Figure 7 shown, according to step S4, after the suspended base 100 is removed from the jig, the support reinforcement 50 is installed between the two groups of side supports, which can avoid the deformation of the through space, prevent the distance between the side supports from shifting, and prevent the suspended base 100 from deforming structurally. This facilitates subsequent hoisting and alignment installation, and also improves the working efficiency when inserting the plug-in housing 200.

[0081] As Figure 8 and Figure 9 shown, in this embodiment, the propeller axis is set as the assumed axis 201, and in other embodiments, the assumed axis 201 can be confirmed according to the positioning requirements. Specifically, in this embodiment, the suspended base 100 is positioned left and right by the assumed axis 201, and the front and rear positioning is performed using the rib inspection line of the ship, so as to accurately position the aerodynamic nacelle on the housing 200. Further, the height difference between the top surface of the panel 20 and the assumed axis 201 is set as L1, and the distance between the inner side surface of the panel 20 and the assumed axis 201 is set as L2. According to the confirmation and review of the data of L1 and L2, it can be ensured that the suspended base 100 can be accurately installed in the housing 200, and the specific values of L1 and L2 are confirmed according to the actual on-site situation.

[0082] As Figures 10-12As shown, in this embodiment, the auxiliary reinforcement includes a first horizontal reinforcement 60, an inclined reinforcement 70, and a second horizontal reinforcement 80. Specifically, before the suspended base 100 is positioned and needs to be welded and fixed to the housing 200, the auxiliary reinforcement needs to be installed on the suspended base 100 to ensure that the suspended base 100 does not deform during the welding process. Exemplarily, in this embodiment, at least two first horizontal reinforcements 60 are provided, and their extending directions are all set along the second direction. Further, the two horizontal reinforcements 60 are respectively arranged on both sides of the top surfaces of two groups of side supports. Specifically, they are respectively located above the free ends of the side supports and above one end of the side support provided with the transverse reinforcement 30. Further, the second horizontal reinforcement 80 is also arranged on the top surfaces of two groups of side supports, and the extending directions of the two second horizontal reinforcements 80 are all set along the first direction, so as to be able to cover above the panel 20 and form a quadrilateral support structure with the first horizontal reinforcement 60. Further, an inclined reinforcement 70 is obliquely arranged above the quadrilateral support structure, and the lower ends of the two inclined reinforcements 70 are both connected to the first horizontal reinforcement 60 above the transverse reinforcement 30, and the higher ends of the inclined reinforcement 70 are connected to the housing 200. Thus, under the support and limitation of the auxiliary reinforcement, the accuracy of installing the suspended base 100 in the aerodynamic nacelle can be ensured, and the influence of welding deformation on its structural stability can be avoided.

[0083] Further, after the welding is completed, the auxiliary reinforcement is sequentially removed, and the L1 and L2 are re-inspected, then the installation effect of the suspended base 100 can be evaluated, and adjustments can be made in a timely manner.

[0084] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A suspended base, characterized in that: include: A web (10), a panel (20) and a transverse reinforcement (30) are arranged perpendicularly to each other in pairs, one web (10) and one panel (20) are set as a group of side supports, a group of side supports are respectively arranged at both ends of the transverse reinforcement (30), the transverse reinforcement (30) is connected to the web (10), and a through space is arranged between the two groups of side supports.

2. The suspended base according to claim 1, characterized in that: It also includes a web reinforcement (40), one end of which is connected to the transverse reinforcement (30) and the other end is connected to the panel (20), and the web reinforcement (40) is supported on the outer side of the web (10).

3. The suspended base according to claim 2, characterized in that: The web reinforcement (40) is arranged parallel to the transverse reinforcement (30).

4. The suspended base according to claim 1, characterized in that: The transverse reinforcement (30) is arranged at one end of the side support, and the other end of the side support is a free end.

5. The suspended base according to claim 1, characterized in that: The top surface of the web (10) is a plane, and the bottom surface is a curved surface, and the distance between the top surface and the bottom surface gradually increases along the direction from one end of the web (10) where the transverse reinforcement (30) is provided to the other end.

6. The suspended base according to claim 1, characterized in that: The panel (20) is arranged on the top surface of the web (10), and the width of the panel (20) gradually increases from one end of the side support where the transverse reinforcement (30) is arranged to the other end thereof.

7. The suspended base according to claim 1, characterized in that: The web (10) is provided with an arc-shaped portion and a connecting portion, the panel (20) is connected to the arc-shaped portion, and the two ends of the transverse reinforcement (30) are respectively fixed at the connecting portions of the two webs (10).

8. The suspended base according to claim 1, characterized in that: The through space is arranged to penetrate up and down along the height direction of the web (10).

9. An aerodynamic nacelle, characterized in that: The invention comprises a suspended base, a shell (200) and a hatch cover (300) as claimed in any one of claims 1 to 8, wherein the shell (200) and the hatch cover (300) are connected by bolts, and the web (10) and the panel (20) in the suspended base are inserted into the shell (200).

10. A method for installing a suspended base, characterized in that: The following steps are involved: S1. Fix the panel (20), web (10) and transverse reinforcement (30) in the suspended base according to any one of claims 1 to 8 on the tire frame in sequence; S2, fillet welds are made at three locations a, b, and c on both sides of the web (10), and then fillet welds are made at three locations d, e, and f on both sides; S3, weld the butt weld at g, and then perform fillet weld at h; S4, demolding the suspended base, and installing the support reinforcement (50) between the two sets of side supports; S5, hoisting the suspended base to the shell (200) of the aerodynamic nacelle, and positioning it left and right using the assumed axis (201), and positioning it front and back using the rib inspection line, and then determining and checking the height difference L1 between the panel (20) and the assumed axis (201), and the spacing L2 between the panel (20) and the assumed axis (201); S6. After installing the auxiliary reinforcement on the suspended base, fix the suspended base in the aerodynamic nacelle; S7. After welding is completed, the auxiliary reinforcement is removed, and the height L1 between the panel (20) and the assumed axis (201) and the distance L2 between the panel (20) and the assumed axis (201) are rechecked.

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