Watertight compartment assembly and watertight test integrated fixture and compartment watertight test method

Abstract

The invention belongs to the field of water unmanned aerial vehicles, and relates to a watertight compartment assembly and watertight test integrated fixture and a compartment watertight test method. The fixture comprises a fixture supporting frame, fixture side longitudinal beams, a cabin section fixing support and a watertight test pool; the front side face and the rear side face of the fixture supporting frame are each provided with a plurality of parallel fixture side face longitudinal beams, and the uppermost fixture side face longitudinal beam is downwards provided with a plurality of cabin section fixing supports. A watertight test pool is mounted in the fixture support frame; in the height direction, the watertight test pool is located below the cabin section fixing support. The watertight test pool is used for containing test water and the lower section of the watertight compartment section, and the middle section of the watertight compartment section is fixed to the fixture supporting frame through the compartment section fixing support.

Description

Technical Field

[0001] This invention belongs to the field of waterborne unmanned aerial vehicles (UAVs) and relates to an integrated frame for watertight compartment assembly and watertight testing, as well as a method for watertight testing of the compartment. Background Technology

[0002] The watertight fuselage section of a seaplane is a typical aircraft fuselage structure, widely used in the fuselage and floats of waterborne aircraft. Due to the complex operating environment of take-off and landing on water, the fuselage section of a seaplane needs to be structurally waterproof. This watertight section mainly includes components such as the section skin, bulkhead, and stringers. The waterproof structure is ensured by applying adhesive during wet assembly when riveting or bolting the skin.

[0003] Currently, the assembly method for this type of watertight compartment mainly involves using a standard assembly jig to position the girder and bulkhead sequentially, connecting them with bolts, then securing the skin with bolts or rivets, and finally assembling each component into the compartment. After assembly, the compartment is removed from the jig and transported to a water tank, where another device secures it for watertight testing. This process requires a water tank, the removal of the compartment from the assembly jig, its transport and securing in the tank, and a significant amount of ballast to ensure proper immersion depth. The process is cumbersome and time-consuming. Summary of the Invention

[0004] Objective: This invention addresses the cumbersome and time-consuming assembly and testing processes for watertight compartments of unmanned aerial vehicles (UAVs). It integrates the assembly jig and watertight testing device into a single design, enabling simultaneous assembly and testing of watertight compartments on the same jig. This reduces process steps, lowers consumption, and improves overall efficiency. Furthermore, a rapid watertight testing method is proposed for this integrated jig.

[0005] Technical solution:

[0006] Firstly, an integrated frame for assembling and testing watertight compartments is provided, including:

[0007] The frame support frame, the side longitudinal beams of the frame, the compartment fixing brackets, and the watertight test pool;

[0008] Multiple parallel longitudinal beams are provided on the front and rear sides of the frame support frame, and multiple compartment fixing brackets are provided downward on the uppermost longitudinal beam. A watertight test pool is installed inside the frame support frame. In the height direction, the watertight test pool is located below the compartment fixing brackets. The watertight test pool is used to hold test water and the lower section of the watertight compartment. The middle section of the watertight compartment is fixed to the frame support frame by the compartment fixing brackets.

[0009] Furthermore, the frame support includes a base, frame columns, frame bottom crossbeams, and frame diagonal bracing.

[0010] The base is a rectangular frame structure. Multiple equally spaced parallel bottom beams are set along the wide side of the base. Upward-pointing uprights are set on the long side of the base between the wide side of the base and the nearest bottom beam. Two uprights are set on each long side of the base. Multiple parallel side beams are set between these two uprights. Diagonal bracing supports are set between the four corners of the base and the top of the nearest upright.

[0011] Furthermore, two parallel inner grooves are provided along the height direction of the longitudinal edge of the frame column near the center of the frame. These inner grooves are used to fix the watertight test pool.

[0012] Furthermore, the watertightness test tank includes: longitudinal partitions, transverse partitions, and a waterproof plastic membrane;

[0013] The longitudinal partition of the water tank is inserted between two frame columns on the long side of the base along its length, with both ends inserted into the inner grooves of the frame columns near the long side; the transverse partition of the water tank is inserted between two adjacent frame columns from top to bottom, with both ends inserted into the inner grooves of the frame columns near the wide side; a waterproof plastic membrane is laid in the space enclosed by the longitudinal partition, the transverse partition, and the base, and the waterproof plastic membrane contains the test water and the lower section of the watertight compartment.

[0014] Furthermore, the compartment's fixed support is higher than the longitudinal bulkhead of the water tank.

[0015] Furthermore, if no watertightness test is performed, the watertightness test pool is removed, and the middle section of the watertight compartment is fixed to the uppermost frame side longitudinal beam by the compartment fixing bracket; the lower section of the watertight compartment is fixed to the middle or lower frame side longitudinal beam by the compartment assembly positioning fixture.

[0016] Secondly, a method for testing the watertightness of a compartment is provided, using the integrated frame for watertight compartment assembly and watertightness testing as described in any one of the first aspects, the method comprising:

[0017] After the compartment assembly is completed, the compartment assembly positioning fixture is removed, and the compartment is fixed on the jig by the compartment fixing bracket. Then, the longitudinal partition of the water tank is installed from the side, and the transverse partition of the water tank is installed from the top down. The inside is lined with a waterproof plastic film. Finally, water is poured into the water tank outside the compartment to form a watertight test water tank, and the watertightness test of the compartment is started at the same time. By recording the immersion time of the compartment, it is observed whether there is any water leakage inside the compartment to confirm whether the watertightness of the compartment is qualified.

[0018] Furthermore, the method also includes:

[0019] The compartment frame beams are precisely positioned on the compartment assembly jig using compartment assembly positioning fixtures and compartment fixing brackets. An installation method is adopted to first assemble the frame and beam skeleton and then assemble the skin, ultimately assembling the watertight compartment.

[0020] Beneficial effects:

[0021] The integrated frame for watertight compartment assembly and watertight testing of the present invention fully utilizes the characteristics of compartment assembly, integrates compartment assembly and watertight testing device design, reduces the configuration of test pool and pool fixing device, saves factory space and reduces material consumption.

[0022] The integrated frame for assembling and testing the watertight compartments of the present invention for the watertight unmanned aerial vehicle adopts in-situ assembly and watertight testing. The watertight testing process of the compartments omits the step of transferring the compartments from the assembly frame to the water tank for fixation in conventional testing, thus optimizing the overall process and shortening the overall cycle.

[0023] When the watertight compartment assembly and watertight testing integrated frame of the present invention is used for watertight testing of the watertight compartment of the water-tight unmanned aerial vehicle, the compartment is fixed to the water tank frame in advance, eliminating the step of ballast material, and solving the problem that the compartment is too light to be immersed to a suitable depth in the water tank. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the integrated frame for assembling and testing the watertight compartment of the present invention (before assembly).

[0025] Figure 2 This is a schematic diagram of the integrated frame for assembling and testing the watertight compartment of the present invention (watertight test state);

[0026] Figure 3 This is a schematic diagram of the assembly and molding of the watertight compartment of the fuselage of the unmanned aerial vehicle of the present invention;

[0027] Figure 4 This is a schematic diagram of the watertightness test of the watertight compartment of the fuselage of the unmanned aerial vehicle of the present invention;

[0028] Among them: 1-Side longitudinal beam of frame, 2-Bottom crossbeam of frame, 3-Frame column, 4-Channel fixing bracket, 5-Frame diagonal brace bracket, 6-Inner groove of frame column, 7-Transverse partition of water tank, 8-Longitudinal partition of water tank, 9-Channel assembly positioning fixture, 10-Assembled compartment, 11-Watertight test water tank. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0030] In the description of this invention, it should be understood that the terms "center", "axial", "vertical", "upper", "lower", "upper end", "bottom end", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0031] This invention provides an integrated frame for assembling and testing watertight compartments, such as... Figure 4 As shown, it includes:

[0032] 1. Side longitudinal beams of the frame; 2. Bottom crossbeams of the frame; 3. Frame columns; 4. Compartment fixing brackets; 5. Frame diagonal bracing brackets; 6. Inner groove of frame column; 7. Watertight compartment; 8. Watertight test pool.

[0033] The watertightness test pool 11 includes a transverse partition 7, a longitudinal partition 8, and a waterproof plastic membrane.

[0034] Example

[0035] This invention provides an integrated frame structure for assembling and testing the watertight compartment of an unmanned aerial vehicle (UAV), such as... Figure 1 As shown, it includes: a side longitudinal beam 1 with a dimension of (L1+200)mm; a bottom crossbeam 2 with a dimension of (L2+200)mm; a frame column 3 with a dimension ≥ (L3+300)mm; a section fixing bracket 4, the specific position of which is set according to the section frame structure; and a frame diagonal brace bracket 5, which plays a role in stabilizing the frame structure. L1, L2, and L3 represent the length, width, and height of the watertight section of the unmanned aerial vehicle (UAV), respectively.

[0036] The integrated frame structure for assembling and testing the watertight compartments of underwater drones can be quickly converted into a watertight testing tank structure, such as... Figure 2As shown, with the help of the groove 6 on the inner side of the frame column, the longitudinal partition 8 of the water tank is installed from the side onto the integrated frame structure. Then, the transverse partition 7 of the water tank is inserted from the top of the integrated frame structure downwards. Finally, a waterproof plastic film is laid on the inside, and water is injected into the inside to quickly form a watertight test water tank.

[0037] The compartment assembly process involves precisely positioning the compartment frame beams and other structures on the compartment assembly jig using the compartment assembly positioning fixture 9. Figure 3 As shown, the installation method adopts the method of first assembling the frame and beam skeleton and then assembling the skin, and finally assembling it into compartment 10.

[0038] The watertightness test method for the compartment is as follows: After the compartment assembly is completed, remove the compartment assembly positioning fixture 9, and use the compartment fixing bracket 4 to fix the compartment on the jig. Then, install the longitudinal partition 8 of the water tank from the side, and install the transverse partition 7 of the water tank from top to bottom. Line the inside with a waterproof plastic film, and finally fill the water tank outside the compartment with water to form the watertightness test water tank 11. Figure 4 As shown, a watertightness test of the compartment was simultaneously initiated. By recording the immersion time of the compartment and observing whether there was any water leakage inside the compartment, the watertightness of the compartment was confirmed to be up to standard.

[0039] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0040] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An integrated fixture for watertight compartment assembly and watertight testing, characterized in that, The application relates to a water-tight cabin segment assembly and water-tight test integrated moulding frame. Parallel moulding frame side longitudinal beams are arranged on the front and back sides of a moulding frame support frame, and a plurality of cabin segment fixing supports are arranged on the uppermost moulding frame side longitudinal beam; a water-tight test water pool is arranged in the moulding frame support frame; in the height direction, the water-tight test water pool is arranged below the cabin segment fixing supports; the water-tight test water pool is used for containing test water and the lower segment of a water-tight cabin segment, and the middle segment of the water-tight cabin segment is fixed to the moulding frame support frame through the cabin segment fixing supports. The moulding frame support frame comprises a base, moulding frame columns, a moulding frame bottom cross beam and a frame inclined support support; 2. The flask of claim 1, wherein The base is a rectangular frame structure, a plurality of equidistant parallel moulding frame bottom cross beams are arranged on the wide side of the base, the moulding frame columns are arranged upwards between the wide side of the base and the long side of the base closest to the nearest moulding frame bottom cross beam, two moulding frame columns are arranged on each long side of the base, and a plurality of parallel moulding frame side longitudinal beams are arranged between the two moulding frame columns; frame inclined support supports are arranged between the four corners of the base and the top ends of the respective nearest moulding frame columns. The longitudinal edges of the moulding frame columns close to the centre of the moulding frame are provided with two parallel inner side grooves in the height direction, and the inner side grooves are used for fixing the water-tight test water pool.

3. The flask of claim 2 wherein, The water-tight test water pool comprises a water pool longitudinal partition plate, a water pool transverse partition plate and a waterproof plastic film; 4. The flask of claim 3 wherein, The water pool longitudinal partition plate is inserted between the two moulding frame columns on the long side of the base in the length direction, and the two ends are clamped into the inner side grooves of the moulding frame columns close to the long side; the water pool transverse partition plate is inserted between the two adjacent moulding frame columns from top to bottom, and the two ends are clamped into the inner side grooves of the moulding frame columns close to the wide side; the waterproof plastic film is laid into the space surrounded by the water pool longitudinal partition plate, the water pool transverse partition plate and the base, and the waterproof plastic film contains the test water and the lower segment of the water-tight cabin segment. The cabin segment fixing supports are higher than the water pool longitudinal partition plate.

5. The flask of claim 4 wherein, If no water-tight test is performed, the water-tight test water pool is removed, the middle segment of the water-tight cabin segment is fixed to the uppermost moulding frame side longitudinal beam through the cabin segment fixing supports, and the lower segment of the water-tight cabin segment is fixed to the middle or lower moulding frame side longitudinal beam through the cabin segment assembly positioning clamp.

6. The flask of claim 5 wherein, The application relates to a water-tight cabin segment assembly and water-tight test integrated moulding frame.

7. A method of water-tight testing a cabin section, characterized by, After the cabin segment assembly is completed, the cabin segment assembly positioning clamp is removed, the cabin segment is fixed on the moulding frame through the cabin segment fixing supports, the water pool longitudinal partition plate is assembled from the side, the water pool transverse partition plate is assembled from top to bottom, the waterproof plastic film is laid in the inside, water is injected into the water pool outside the cabin segment to form the water-tight test water pool, and the water-tight test experiment of the cabin segment is started; whether the cabin segment is qualified in water-tightness is determined by recording the water immersion time of the cabin segment and observing whether there is water seepage in the inside of the cabin segment. The method further comprises the following steps:

8. The method of claim 1, wherein, The cabin segment frame beams are accurately positioned on the cabin segment assembly moulding frame through the cabin segment assembly positioning clamp and the cabin segment fixing supports, the installation mode of assembling the frame and the beam skeleton first and then assembling the skin is adopted, and finally the water-tight cabin segment is assembled. ​

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