A structure transformation device for a ship model of a variable geometry small waterplane area twin hull ship

Abstract

The utility model relates to a ship model structure transformation device of a morphing small water plane twin hull, and aims at solving the problem that the fixed small water plane twin hull ship model cannot be morphed and the tow point height cannot be artificially adjusted. The ship model structure transformation assembly is installed on the main hull, the tow point height adjusting assembly is installed on the ship model structure transformation assembly, the longitudinal support pipe group is fixedly installed on the main hull through a plurality of load-bearing columns and a plurality of square pipe seats, the vertical support pipe group is fixedly installed in the middle of the longitudinal support pipe group through a plurality of semi-detachable T-shaped three-way connectors, and the transverse support pipe group is fixedly installed at the end of the longitudinal support pipe group through a plurality of semi-detachable T-shaped three-way connectors. The utility model is used in the water surface navigation technical field.

Description

Technical Field

[0001] The invention relates to a ship model structure transformation experimental device, in particular to a ship model structure transformation device of a deformable small waterplane area catamaran. The invention is used in the field of surface navigation technology. Background Art

[0002] With the growing demand for marine development, small waterplane area twin-hull (SWATH) vessels (SWATHs) are gaining increasing attention due to their excellent seakeeping performance. The morphable SWATH vessel incorporates a variable structure based on conventional SWATHs, enabling it to adapt to various sea conditions and complete operational tasks with high efficiency.

[0003] In the current ship model water tank test, Chinese patent application number CN200910053197.4, entitled "Water plane motion mechanism for ship model testing in water tank", proposes a water plane motion mechanism for ship model testing. Although the device has high precision in maneuverability performance testing and a simple structure, it can only be applied to fixed ship models.

[0004] In view of the strong demand for structure transformation devices in the current shape-changing small waterplane area catamaran ship models in towing tank tests, it is necessary to provide a ship model structure transformation device to solve the problems that the current fixed small waterplane area catamaran ship models cannot be transformed in shape and the towing point height cannot be adjusted manually. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the current fixed small waterplane area catamaran ship model cannot be transformed in shape and the towing point height cannot be adjusted manually, and thus provide a ship model structure transformation device for a variable-shape small waterplane area catamaran.

[0006] The technical solution adopted by the present invention to solve the above problems is:

[0007] A ship model structure transformation device for a deformable small waterplane area catamaran, comprising a main hull, a ship model structure transformation component and a towing point height adjustment component;

[0008] The ship model structure transformation assembly includes multiple load-bearing columns, multiple square tube seats, multiple semi-detachable T-shaped three-way connectors, longitudinal support tube groups, transverse support tube groups and vertical support tube groups;

[0009] The ship model structure transformation component is installed on the main hull, and the towing point height adjustment component is installed on the ship model structure transformation component.

[0010] The longitudinal support pipe group is fixedly installed on the main hull through multiple load-bearing columns and multiple square pipe seats, the vertical support pipe group is fixedly installed in the middle of the longitudinal support pipe group through multiple semi-detachable T-shaped three-way connectors, and the transverse support pipe group is fixedly installed at the end of the longitudinal support pipe group through multiple semi-detachable T-shaped three-way connectors.

[0011] Furthermore, a fixing screw is provided on the semi-detachable T-shaped three-way connector, which is sleeved on the support tube of the longitudinal support tube group and fixed to the support tube of the longitudinal support tube group by the fixing screw.

[0012] Further, the longitudinal support tube group includes a first longitudinal support tube, a second longitudinal support tube, a third longitudinal support tube and a fourth longitudinal support tube;

[0013] Each square tube seat is equipped with a load-bearing column, and the first longitudinal support tube and the second longitudinal support tube are fixedly installed on the main hull through four load-bearing columns and four square tube seats respectively.

[0014] The third longitudinal support tube is arranged below the first longitudinal support tube, the fourth longitudinal support tube is arranged below the second longitudinal support tube, and the third longitudinal support tube and the fourth longitudinal support tube are both installed on the main hull, and the center lines of the first longitudinal support tube, the second longitudinal support tube, the third longitudinal support tube and the fourth longitudinal support tube are arranged in parallel.

[0015] Furthermore, the vertical support tube group includes a first vertical support tube, a second vertical support tube, a third vertical support tube and a fourth vertical support tube;

[0016] The two ends of the first vertical support tube are respectively fixed with a semi-detachable T-shaped three-way connector, the two ends of the second vertical support tube are respectively fixed with a semi-detachable T-shaped three-way connector, the first vertical support tube is installed on the first longitudinal support tube and the third longitudinal support tube through two semi-detachable T-shaped three-way connectors, the top end of the third vertical support tube is installed on the third longitudinal support tube through a semi-detachable T-shaped three-way connector, the second vertical support tube is installed on the second longitudinal support tube and the fourth longitudinal support tube through two semi-detachable T-shaped three-way connectors, and the top end of the fourth vertical support tube is installed on the fourth longitudinal support tube through a semi-detachable T-shaped three-way connector.

[0017] Further, the transverse support tube group includes a first transverse support tube, a second transverse support tube, a third transverse support tube, a fourth transverse support tube, a fifth transverse support tube and a sixth transverse support tube;

[0018] The two ends of the first transverse support tube are mounted on the front ends of the second longitudinal support tube and the third longitudinal support tube via two semi-detachable T-shaped three-way connectors. The two ends of the second transverse support tube are mounted on the front ends of the first longitudinal support tube and the fourth longitudinal support tube via two semi-detachable T-shaped three-way connectors. The two ends of the third transverse support tube are mounted on the front ends of the first longitudinal support tube and the second longitudinal support tube via two semi-detachable T-shaped three-way connectors.

[0019] The two ends of the fourth transverse support tube are installed on the rear end of the second longitudinal support tube and the rear end of the third longitudinal support tube through two semi-detachable T-shaped three-way connectors, the two ends of the fifth transverse support tube are installed on the rear end of the first longitudinal support tube and the rear end of the fourth longitudinal support tube through two semi-detachable T-shaped three-way connectors, and the two ends of the sixth transverse support tube are installed on the rear end of the first longitudinal support tube and the rear end of the second longitudinal support tube through two semi-detachable T-shaped three-way connectors.

[0020] Furthermore, the towing point height adjustment assembly includes two front nuts, two rear nuts and two connecting screws;

[0021] The third vertical support tube and the fourth vertical support tube are machined with multiple through holes along the length direction. A connecting screw is provided on a through hole on the third vertical support tube, and a connecting screw is provided on a through hole on the fourth vertical support tube. A front nut and a rear nut are threadedly connected to each connecting screw, and the front nut and the rear nut are located on both sides of the vertical support tube. A tow rope hole is machined on each connecting screw.

[0022] Furthermore, the main hull includes a left hull and a right hull, the left hull and the right hull have the same structure, and the left hull includes a front support, a rear support and an underwater submersible body;

[0023] The front pillar and the rear pillar are installed on the underwater submersible body, one front pillar is fixedly installed on the first longitudinal support tube through two load-bearing columns and two square tube seats, one rear pillar is fixedly installed on the first longitudinal support tube through two load-bearing columns and two square tube seats, another front pillar is fixedly installed on the second longitudinal support tube through two load-bearing columns and two square tube seats, and the other rear pillar is fixedly installed on the second longitudinal support tube through two load-bearing columns and two square tube seats.

[0024] Furthermore, it also includes a front navigation plate, a rear navigation plate and two support templates; the two support templates are respectively installed on the two ends of the first longitudinal support tube and the second longitudinal support tube, the front navigation plate is fixedly installed on the front support template, and the rear navigation plate is fixedly installed on the rear support template.

[0025] Furthermore, it includes an inertial measurement unit; the inertial measurement unit is mounted on the front pillar.

[0026] Furthermore, it also includes a first immovable weight, a second immovable weight, a first movable weight, and a second movable weight;

[0027] The first immovable weight and the second immovable weight are installed on the underwater submersible body, the first movable weight is installed on one supporting template, and the second movable weight is installed on the other supporting template.

[0028] Beneficial effects of the present invention:

[0029] 1、The most significant gain of the present application is that the structure of the ship model can be transformed, by changing the length of the transverse support pipe arranged in cross at the front and rear of the main hull and adjusting the rotation angle of the T-shaped tee joint corresponding thereto, the purpose of structure transformation can be achieved;

[0030] 2、The height of the tow point is adjusted by the tow point height adjusting device cooperating with the structure transformation device, so that the tow rope can be as close to the water surface as possible, and the requirements of the tow point test of the small water plane catamaran are met;

[0031] 3、The present application does not have a structure that is too complex, the basic parts of the structure transformation device are standard parts, which is economical and convenient to manufacture;

[0032] 4、The structure transformation device in the present application is assembled based on longitudinal, vertical and transverse cross stainless steel pipes, which can offset a part of the moment of force acting on the hull during towing, and the overall structure is more stable and the device is more reliable.

[0033] 5、The present application has the advantages of variable shape, stable structure and reliable device, and can be widely applied to small water plane catamaran and other ship model pool towing tests that require shape transformation. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the axial side view of the deformed small water plane catamaran model when the left and right pieces 4a and 4b are kept vertical;

[0035] Figure 2 is the axial side view of the deformed small water plane catamaran model when the left and right pieces 4a and 4b are unfolded outward;

[0036] Figure 3 is the left piece 4a axial side view of the deformed small water plane catamaran main hull 1;

[0037] Figure 4 is the axial view of the deformed small water plane catamaran model structure transformation assembly 2;

[0038] Figure 5 is the axial view of the right side tow point height adjusting assembly 3 of the deformed small water plane catamaran. DETAILED DESCRIPTION

[0039] DETAILED DESCRIPTION ONE: COMBINATION Figure 1-Figure 5 This embodiment is described, the ship model structure transformation device of a deformed small water plane catamaran in this embodiment, it includes main hull 1, ship model structure transformation assembly 2 and tow point height adjusting assembly 3;

[0040] The ship model structure transformation assembly 2 includes a plurality of load-bearing columns 8, a plurality of square tube seats 9, a plurality of semi-detachable T-shaped three-way connectors 10, a longitudinal support pipe group 11, a transverse support pipe group 12 and a vertical support pipe group 13;

[0041] The ship model structure transformation component 2 is installed on the main hull 1, the towing point height adjustment component 3 is installed on the ship model structure transformation component 2, the longitudinal support pipe group 11 is fixedly installed on the main hull 1 through multiple load-bearing columns 8 and multiple square pipe seats 9, the vertical support pipe group 13 is fixedly installed on the middle part of the longitudinal support pipe group 11 through multiple semi-detachable T-shaped three-way connectors 10, and the transverse support pipe group 12 is fixedly installed on the end of the longitudinal support pipe group 11 through multiple semi-detachable T-shaped three-way connectors 10.

[0042] Specific implementation method 2: Combination Figure 1-Figure 2 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran. A semi-detachable T-shaped tee connector 10 is provided with a fixing screw 20. The semi-detachable T-shaped tee connector 10 is sleeved onto the support tubes of the longitudinal support tube assembly 11 and is fixed to the support tubes of the longitudinal support tube assembly 11 via the fixing screw 20. Other methods are the same as those in the first embodiment.

[0043] In this embodiment, the semi-detachable T-shaped three-way connector 10 is semi-detachable through a rotary hinge, and can be threadedly connected to the corresponding holes on the longitudinal support tube group 11, the transverse support tube group 12 and the vertical support tube group 13 by using a fixing screw 20 for fixing. When the form is changed, it is only necessary to remove the semi-detachable T-shaped three-way connector 10 and change the direction of its lower interface, while rotating the left piece 4a and the right piece 4b of the main hull 1, and then use the fixing screw 20 to connect and fix the multiple semi-detachable T-shaped three-way connectors 10 at the front and rear of the main hull 1 to the transverse support tube group 12.

[0044] Specific implementation method three: Combination Figure 1 、 Figure 2 and Figure 4 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, wherein the longitudinal support tube group 11 includes a first longitudinal support tube 11a, a second longitudinal support tube 11b, a third longitudinal support tube 11c, and a fourth longitudinal support tube 11d.

[0045] A load-bearing column 8 is installed on each square tube seat 9. The first longitudinal support tube 11a and the second longitudinal support tube 11b are fixedly installed on the main hull 1 through four load-bearing columns 8 and four square tube seats 9 respectively.

[0046] The third longitudinal support tube 11c is disposed below the first longitudinal support tube 11a, and the fourth longitudinal support tube 11d is disposed below the second longitudinal support tube 11b. Both the third longitudinal support tube 11c and the fourth longitudinal support tube 11d are mounted on the main hull 1, with the centerlines of the first longitudinal support tube 11a, the second longitudinal support tube 11b, the third longitudinal support tube 11c, and the fourth longitudinal support tube 11d being arranged parallel. The remaining method is the same as in the first embodiment.

[0047] Specific implementation method four: Combination Figure 1 、 Figure 2 and Figure 4 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, wherein the vertical support tube group 13 includes a first vertical support tube 13a, a second vertical support tube 13b, a third vertical support tube 13c, and a fourth vertical support tube 13d.

[0048] A semi-detachable T-shaped connector 10 is fixedly mounted on each end of the first vertical support tube 13a, and a semi-detachable T-shaped connector 10 is fixedly mounted on each end of the second vertical support tube 13b. The first vertical support tube 13a is mounted on the first longitudinal support tube 11a and the third longitudinal support tube 11c via two semi-detachable T-shaped connectors 10. The top end of the third vertical support tube 13c is mounted on the third longitudinal support tube 11c via a semi-detachable T-shaped connector 10. The second vertical support tube 13b is mounted on the second longitudinal support tube 11b and the fourth longitudinal support tube 11d via two semi-detachable T-shaped connectors 10. The top end of the fourth vertical support tube 13d is mounted on the fourth longitudinal support tube 11d via a semi-detachable T-shaped connector 10. The rest of the method is the same as that of the third embodiment.

[0049] Specific implementation method five: combination Figure 1 、 Figure 2 and Figure 4 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, wherein the transverse support tube group 12 includes a first transverse support tube 12a, a second transverse support tube 12b, a third transverse support tube 12c, a fourth transverse support tube 12d, a fifth transverse support tube 12e, and a sixth transverse support tube 12f.

[0050] The two ends of the first transverse support tube 12a are mounted on the front ends of the second longitudinal support tube 11b and the third longitudinal support tube 11c via two semi-detachable T-shaped three-way connectors 10. The two ends of the second transverse support tube 12b are mounted on the front ends of the first longitudinal support tube 11a and the fourth longitudinal support tube 11d via two semi-detachable T-shaped three-way connectors 10. The two ends of the third transverse support tube 12c are mounted on the front ends of the first longitudinal support tube 11a and the second longitudinal support tube 11b via two semi-detachable T-shaped three-way connectors 10.

[0051] The ends of the fourth transverse support tube 12d are attached to the rear ends of the second longitudinal support tube 11b and the rear ends of the third longitudinal support tube 11c via two semi-detachable T-shaped connectors 10. The ends of the fifth transverse support tube 12e are attached to the rear ends of the first longitudinal support tube 11a and the rear ends of the fourth longitudinal support tube 11d via two semi-detachable T-shaped connectors 10. The ends of the sixth transverse support tube 12f are attached to the rear ends of the first longitudinal support tube 11a and the rear ends of the second longitudinal support tube 11b via two semi-detachable T-shaped connectors 10. The rest of the method is the same as in the third embodiment.

[0052] By changing the lengths of the first transverse support tube 12a, the second transverse support tube 12b, the third transverse support tube 12c, the fourth transverse support tube 12d, the fifth transverse support tube 12e and the sixth transverse support tube 12f which are cross-arranged at the front and rear of the main hull 1, and adjusting the rotation angles of the corresponding multiple semi-detachable T-shaped three-way connectors 10, and then using the fixing screws 20 for fixed connection, the structural stability of the main hull 1 can be ensured when it is in multiple forms.

[0053] The first transverse support tube 12a and the second transverse support tube 12b are located at the front of the main hull 1 and cross each other. The fourth transverse support tube 12d and the fifth transverse support tube 12e are located at the rear of the main hull 1 and cross each other. The purpose is to provide support for the left sheet 4a and the right sheet 4b, making the overall structure more stable and preventing the rotation angle of the pillar from being changed due to the wave force in the water pool during the test, thereby preventing the test device and measuring instruments from being damaged.

[0054] Specific implementation method six: combination Figure 4 and Figure 5 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran. The towing point height adjustment assembly 3 includes two front nuts 15a, two rear nuts 15b, and two connecting screws 16.

[0055] A plurality of through holes 14 are formed on the third vertical support tube 13c and the fourth vertical support tube 13d along the length direction, a connecting screw 16 is arranged on one through hole 14 of the third vertical support tube 13c, and a connecting screw 16 is arranged on one through hole 14 of the fourth vertical support tube 13d. A front nut 15a and a rear nut 15b are threadedly connected to each connecting screw 16, and the front nut 15a and the rear nut 15b are arranged on the two sides of the vertical support tube. A tow rope hole 17 is formed on each connecting screw 16. The other methods are the same as those in the fourth embodiment.

[0056] In the third embodiment, the third vertical support tube 13c or the fourth vertical support tube 13d is provided with a through hole 14 at different heights of the tow point position, and the connecting screw 16 is connected by the front nut 15a and the rear nut 15b. The connecting screw 16 is provided with a tow rope hole 17 to meet the requirement of different tow point heights after the shape transformation. The third vertical support tube 13c and the fourth vertical support tube 13d are provided with six through holes 14. When the left piece 4a and the right piece 4b are unfolded outward, different unfolding angles correspond to different tow point hole positions 14 to adapt to the requirement of different tow point heights after the shape transformation.

[0057] The seventh embodiment is combined with the first embodiment. Figure 1-Figure 3 In the seventh embodiment, the ship model structure transformation device of the variable shape SWATH ship is described. The main hull 1 includes a left piece 4a and a right piece 4b. The left piece 4a and the right piece 4b are the same in structure. The left piece 4a includes a front support column 5, a rear support column 6, and an underwater submerged body 7.

[0058] The front support column 5 and the rear support column 6 are installed on the underwater submerged body 7. One front support column 5 is fixedly installed on the first longitudinal support tube 11a through two bearing columns 8 and two square tube seats 9. One rear support column 6 is fixedly installed on the first longitudinal support tube 11a through two bearing columns 8 and two square tube seats 9. Another front support column 5 is fixedly installed on the second longitudinal support tube 11b through two bearing columns 8 and two square tube seats 9. Another rear support column 6 is fixedly installed on the second longitudinal support tube 11b through two bearing columns 8 and two square tube seats 9. The other methods are the same as those in the third embodiment.

[0059] The front support column 5 and the rear support column 6 are provided with an upper steel plate 25. The front support column 5 and the rear support column 6 are connected to the bearing column 8 through the upper steel plate 25. The middle section of the underwater submerged body 7 is a straight section, and the bow section and the stern section are curved sections with a certain curvature. The cross section of the front support column 5 and the rear support column 6 is a wing type. The whole ship adopts a glass steel shell, and foam is used as a filling matrix.

[0060] The eighth embodiment is combined with the first embodiment. Figure 1-Figure 2This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, which includes a front navigation plate 18, a rear navigation plate 19, and two support templates 22. The two support templates 22 are respectively mounted on the ends of the first longitudinal support tube 11a and the second longitudinal support tube 11b. The front navigation plate 18 is fixedly mounted on the front support template 22, and the rear navigation plate 19 is fixedly mounted on the rear support template 22. The rest of the method is the same as that of the fifth embodiment.

[0061] Specific implementation method nine: combination Figure 1-Figure 2 This embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, which further includes an inertial measurement unit 24 mounted on the front strut 5. Other methods are the same as those in the seventh embodiment.

[0062] Specific implementation method ten: Combination Figure 1-Figure 3 The present embodiment describes a ship model structure transformation device for a deformable small waterplane area catamaran, which further includes a first immovable weight 21a, a second immovable weight 21b, a first movable weight 23a, and a second movable weight 23b.

[0063] The first immovable weight 21a and the second immovable weight 21b are installed on the underwater submersible body 7, the first movable weight 23a is installed on one supporting template 22, and the second movable weight 23b is installed on the other supporting template 22. Other methods are the same as those in the eighth embodiment.

[0064] The guide lines of the bow and stern sections of the lower submersible body 7 are fitted by uniform B-spline curves, and the first immovable weight 21a and the second immovable weight 21b are arranged at the bottom of the keel of the lower submersible body 7.

[0065] The above-mentioned specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principles and purpose of the present invention. The scope of protection of the present invention shall be based on the claims and shall not be limited by the above-mentioned specific implementation. All implementation schemes within its scope shall be subject to the constraints of the present invention.

Claims

1. A ship model structure transformation device for a deformable small waterplane area catamaran, comprising a main hull (1), a ship model structure transformation component (2) and a towing point height adjustment component (3); Its characteristics are: The ship model structure transformation assembly (2) comprises a plurality of load-bearing columns (8), a plurality of square tube seats (9), a plurality of semi-detachable T-shaped three-way connectors (10), a longitudinal support tube group (11), a transverse support tube group (12) and a vertical support tube group (13); the longitudinal support tube group (11) comprises a first longitudinal support tube (11a), a second longitudinal support tube (11b), a third longitudinal support tube (11c) and a fourth longitudinal support tube (11d); the transverse support tube group (12) comprises a first transverse support tube (12a), a second transverse support tube (12b), a third transverse support tube (12c), a fourth transverse support tube (12d), a fifth transverse support tube (12e) and a sixth transverse support tube (12f); The ship model structure transformation component (2) is installed on the main hull (1), and the towing point height adjustment component (3) is installed on the ship model structure transformation component (2). The longitudinal support pipe group (11) is fixedly mounted on the main hull (1) through a plurality of load-bearing columns (8) and a plurality of square pipe seats (9); the vertical support pipe group (13) is fixedly mounted on the middle portion of the longitudinal support pipe group (11) through a plurality of semi-detachable T-shaped three-way connectors (10); the transverse support pipe group (12) is fixedly mounted on the end portion of the longitudinal support pipe group (11) through a plurality of semi-detachable T-shaped three-way connectors (10); the semi-detachable T-shaped three-way connectors (10) are provided with fixing screws (20); the semi-detachable T-shaped three-way connectors (10) are sleeved on the support pipes of the longitudinal support pipe group (11); the semi-detachable T-shaped three-way connectors (10) are fixed to the support pipes of the longitudinal support pipe group (11) through the fixing screws (20); A load-bearing column (8) is installed on each square tube seat (9), and the first longitudinal support tube (11a) and the second longitudinal support tube (11b) are fixedly installed on the main hull (1) through four load-bearing columns (8) and four square tube seats (9). The third longitudinal support tube (11c) is arranged below the first longitudinal support tube (11a), and the fourth longitudinal support tube (11d) is arranged below the second longitudinal support tube (11b). The third longitudinal support tube (11c) and the fourth longitudinal support tube (11d) are both installed on the main hull (1). The center line of the first longitudinal support tube (11a), the center line of the second longitudinal support tube (11b), the center line of the third longitudinal support tube (11c), and the center line of the fourth longitudinal support tube (11d) are arranged in parallel. The two ends of the first transverse support tube (12a) are connected by two A semi-detachable T-shaped three-way connector (10) is installed on the front end of the second longitudinal support tube (11b) and the front end of the third longitudinal support tube (11c); both ends of the second transverse support tube (12b) are installed on the front end of the first longitudinal support tube (11a) and the front end of the fourth longitudinal support tube (11d) through two semi-detachable T-shaped three-way connectors (10); both ends of the third transverse support tube (12c) are installed on the front end of the first longitudinal support tube (11a) and the front end of the second longitudinal support tube (11b) through two semi-detachable T-shaped three-way connectors (10); The two ends of the fourth transverse support tube (12d) are mounted on the rear end of the second longitudinal support tube (11b) and the rear end of the third longitudinal support tube (11c) via two semi-detachable T-shaped three-way connectors (10); the two ends of the fifth transverse support tube (12e) are mounted on the rear end of the first longitudinal support tube (11a) and the rear end of the fourth longitudinal support tube (11d) via two semi-detachable T-shaped three-way connectors (10); and the two ends of the sixth transverse support tube (12f) are mounted on the rear end of the first longitudinal support tube (11a) via two semi-detachable T-shaped three-way connectors (10). By changing the lengths of the first transverse support tube (12a), the second transverse support tube (12b), the third transverse support tube (12c), the fourth transverse support tube (12d), the fifth transverse support tube (12e) and the sixth transverse support tube (12f) arranged crosswise at the front and rear of the main hull (1), and adjusting the rotation angles of the corresponding multiple semi-detachable T-shaped three-way connectors (10), and then using a fixing screw (20) for fixed connection, the structural stability of the main hull (1) can be ensured when it is in multiple forms.

2. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 1, characterized in that: The vertical support tube group (13) comprises a first vertical support tube (13a), a second vertical support tube (13b), a third vertical support tube (13c) and a fourth vertical support tube (13d); A semi-detachable T-shaped three-way connector (10) is fixedly installed at both ends of the first vertical support tube (13a), and a semi-detachable T-shaped three-way connector (10) is fixedly installed at both ends of the second vertical support tube (13b). The first vertical support tube (13a) is installed on the first longitudinal support tube (11a) and the third longitudinal support tube (11c) via two semi-detachable T-shaped three-way connectors (10). The top end of the third vertical support tube (13c) is installed on the third longitudinal support tube (11c) via a semi-detachable T-shaped three-way connector (10). The second vertical support tube (13b) is installed on the second longitudinal support tube (11b) and the fourth longitudinal support tube (11d) via two semi-detachable T-shaped three-way connectors (10). The top end of the fourth vertical support tube (13d) is installed on the fourth longitudinal support tube (11d) via a semi-detachable T-shaped three-way connector (10).

3. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 2, characterized in that: The towing point height adjustment assembly (3) comprises two front nuts (15a), two rear nuts (15b) and two connecting screws (16); A plurality of through holes (14) are machined along the length direction on the third vertical support tube (13c) and the fourth vertical support tube (13d); a connecting screw (16) is provided on a through hole (14) on the third vertical support tube (13c); a connecting screw (16) is provided on a through hole (14) on the fourth vertical support tube (13d); a front nut (15a) and a rear nut (15b) are threadedly connected to each connecting screw (16); the front nut (15a) and the rear nut (15b) are arranged on both sides of the vertical support tube; and a tow rope hole (17) is machined on each connecting screw (16).

4. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 1, characterized in that: The main hull (1) comprises a left hull (4a) and a right hull (4b), wherein the left hull (4a) and the right hull (4b) have the same structure, and the left hull (4a) comprises a front support (5), a rear support (6) and an underwater submersible body (7); A front support (5) and a rear support (6) are installed on an underwater submersible body (7); one front support (5) is fixedly installed on a first longitudinal support tube (11a) via two load-bearing columns (8) and two square tube seats (9); one rear support (6) is fixedly installed on the first longitudinal support tube (11a) via two load-bearing columns (8) and two square tube seats (9); another front support (5) is fixedly installed on a second longitudinal support tube (11b) via two load-bearing columns (8) and two square tube seats (9); and another rear support (6) is fixedly installed on the second longitudinal support tube (11b) via two load-bearing columns (8) and two square tube seats (9).

5. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 1, characterized in that: It also includes a front navigation piece (18), a rear navigation piece (19) and two support templates (22); the two support templates (22) are respectively installed on the two ends of the first longitudinal support tube (11a) and the second longitudinal support tube (11b), the front navigation piece (18) is fixedly installed on the front support template (22), and the rear navigation piece (19) is fixedly installed on the rear support template (22).

6. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 4, characterized in that: It also includes an inertial measurement unit (24); the inertial measurement unit (24) is mounted on the front pillar (5).

7. The ship model structure transformation device of a deformable small waterplane area catamaran according to claim 5, characterized in that: It also includes a first immovable weight (21a), a second immovable weight (21b), a first movable weight (23a) and a second movable weight (23b); A first immovable weight (21a) and a second immovable weight (21b) are installed on an underwater submersible body (7), a first movable weight (23a) is installed on one supporting template (22), and a second movable weight (23b) is installed on another supporting template (22).

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