A ship model system installation device and installation method for self-propulsion test

Abstract

The present application belongs to the technical field of test measurement, and discloses a ship model system installation device and installation method for self-propulsion test, wherein the installation device comprises an installation frame assembly and a shafting auxiliary frame assembly; the installation frame assembly comprises a motor installation plate and a self-propulsion instrument pad plate fixedly connected, the motor installation plate is used for fixedly installing a motor, and the self-propulsion instrument pad plate is used for fixedly installing a self-propulsion instrument; the bottom of the motor installation plate is connected to a ship model through a fixed support; the shafting auxiliary frame assembly comprises an inner auxiliary frame and an outer auxiliary frame fixed to the ship model respectively, and the inner auxiliary frame and the outer auxiliary frame are respectively provided with fixing holes for assisting in installing a propeller shaft of a ship model system. The present application realizes the relative position matching of the motor and the self-propulsion instrument through the installation frame assembly, realizes the auxiliary positioning of the propeller shaft through the shafting auxiliary frame assembly, can quickly complete the installation of the motor, the self-propulsion instrument and the propeller shaft and other components inside the ship model, and improves the efficiency and precision of the self-propulsion installation process.

Description

Technical Field

[0001] This invention belongs to the field of experimental measurement technology, and more specifically, relates to an installation device and method for a ship model system used in self-propelled testing. Background Technology

[0002] For ships in the design phase, speed is one of the most crucial performance indicators. After completing the ship's hull design and main engine and propeller selection, it is necessary to predict the ship's drag performance and propulsion performance, commonly achieved through numerical simulation and model testing. Computational Fluid Dynamics (CFD) numerical simulation requires consideration of numerous factors, including turbulence model selection and mesh generation for complex shapes. The simulation results heavily rely on the comprehensive application of these techniques, and in some cases, the simulation results can deviate significantly from actual results. Self-propulsion tests using ship models can more accurately obtain self-propulsion elements representing the interaction between the hull and propeller, such as wake fraction, thrust deduction fraction, hull efficiency, relative rotational efficiency, and propulsion efficiency, enabling real-world speed prediction. This method is more meaningful for engineering applications than CFD.

[0003] When conducting self-propulsion tests, a certain scale is selected to complete the fabrication of the ship model and the installation of appendages. At the same time, it is necessary to simulate the actual ship propulsion process, and to arrange the motor and self-propulsion instrument in sequence inside the model and complete the shafting installation. During the installation process, it is required that the relative positions of the motor, self-propulsion instrument, and shafting be matched while all equipment is fixed, and that they be installed on the ship model according to the design requirements. In addition, the installation angle of the propeller shaft to the hull must also be consistent with the design state.

[0004] The existing installation process requires manual installation of each component onto the ship model. This process involves repeatedly adjusting the position of each component and completing steps such as gluing, fixing, drilling, and adjusting. It requires a high level of experience from the installers and is cumbersome, redundant, and lacks precision. Summary of the Invention

[0005] To address the shortcomings and improvement needs of current ship model self-propulsion testing, which requires repeated manual adjustments to the positions of various components during installation, resulting in a cumbersome installation process and low installation accuracy, this invention provides a ship model system installation device and method for self-propulsion testing. Its purpose is to simplify the installation process, improve installation accuracy, and ensure the rapid completion of test fixtures for different ship types, thus providing a hardware foundation for ship model self-propulsion testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to a first aspect of the present invention, a ship model system mounting device for self-propulsion testing is provided, comprising a mounting frame assembly and a shafting auxiliary frame assembly. The mounting frame assembly includes a motor mounting plate and a self-propulsion instrument pad that are fixedly connected. The motor mounting plate is used to fix a motor, and the self-propulsion instrument pad is used to fix a self-propulsion instrument. The bottom of the motor mounting plate is connected to the ship model through a fixed support, and the output shaft of the motor and the input shaft of the self-propulsion instrument are connected through a coupling.

[0008] The shafting auxiliary frame assembly includes an inner auxiliary frame and an outer auxiliary frame, which are respectively fixed by the ship model. The lower part of the inner auxiliary frame is provided with an inner through-shaft beam, and the lower part of the outer auxiliary frame is provided with an outer through-shaft beam. The inner through-shaft beam and the outer through-shaft beam are respectively provided with fixing holes. When the propeller shaft of the ship model system is installed, the fixing holes on the inner through-shaft beam are used for the propeller shaft located inside the ship model to pass through and be positioned, and the fixing holes on the outer through-shaft beam are used for the propeller shaft located outside the ship model to pass through and be positioned.

[0009] Preferably, the mounting bracket assembly further includes an autopilot mounting bracket, which includes side fixing members and a top fixing member. The side fixing members are respectively connected to the upper sides of the autopilot pad, and the top fixing member is connected to the top of the two side fixing members. The autopilot is connected to the top fixing member by a first bolt and its vertical position is adjustable.

[0010] Preferably, the motor mounting plate includes a side plate and a horizontal plate that are perpendicularly connected to each other. The motor is connected and fixed to the side plate of the motor mounting plate, and the self-propelled instrument pad is connected and fixed to the side plate of the motor mounting plate. A motor support frame is provided on the horizontal plate of the motor mounting plate, and the motor is supported and placed on the motor support frame. The shape of the motor support frame matches the wall surface of the servo motor.

[0011] Preferably, the inner auxiliary frame further includes inner longitudinal beams and inner supporting crossbeams, with both ends of the inner through-shaft crossbeams correspondingly connected to the lower ends of the two inner longitudinal beams, and the inner supporting crossbeams respectively connected to the upper ends of the two inner longitudinal beams; the outer auxiliary frame further includes outer longitudinal beams and outer supporting crossbeams, with both ends of the outer through-shaft crossbeams correspondingly connected to the lower ends of the two outer longitudinal beams, and the outer supporting crossbeams respectively connected to the upper ends of the two outer longitudinal beams; the inner supporting crossbeams and the outer supporting crossbeams are respectively supported and placed on the upper surface of the ship model.

[0012] Preferably, the inner support beam and the outer support beam are respectively provided with horizontal rails, the horizontal rails can be passed through, the inner support beam is connected to the inner longitudinal beam at its corresponding horizontal rail by a second bolt to realize the adjustment of the distance between the two inner longitudinal beams, and the outer support beam is connected to the outer longitudinal beam at its corresponding horizontal rail by a third bolt to realize the adjustment of the distance between the two outer longitudinal beams.

[0013] Preferably, the inner longitudinal beam and the outer longitudinal beam are respectively provided with vertical rails, through which bolts can pass. The inner longitudinal beam is connected to the inner support beam at its corresponding vertical rail by a second bolt to achieve height adjustment of the inner longitudinal beam. The outer longitudinal beam is connected to the outer support beam at its corresponding vertical rail by a third bolt to achieve height adjustment of the outer longitudinal beam. When the propeller shaft of the ship model system is installed, the height of both ends of the propeller shaft is adjusted by adjusting the height of the inner longitudinal beam and / or the outer longitudinal beam to make the installation angle of the propeller shaft consistent with the preset installation angle.

[0014] Preferably, the inner through-shaft crossbeam and the outer through-shaft crossbeam are respectively provided with a plurality of fixing holes arranged side by side to assist in the installation of the plurality of propeller shafts.

[0015] Preferably, the fixed support is a wooden support, the shape of the bottom of the wooden support is in contact with the inner surface of the ship model, the fixed support is fixedly connected to the ship model by adhesive, and the lower end of the motor mounting plate is fixedly connected to the fixed support by adhesive.

[0016] According to a second aspect of the present invention, a method for installing a ship model system for self-propulsion testing is provided. Based on the above-described installation device for a ship model system for self-propulsion testing, the method for installing a ship model system for self-propulsion testing includes:

[0017] The motor is fixedly installed on the motor mounting plate, the autopilot is fixedly installed on the autopilot pad, and the output shaft of the motor and the input shaft of the autopilot are connected by a coupling.

[0018] The mounting bracket assembly, after the motor and the autopilot are installed, is mounted on the ship model via the fixed support to install the motor and the autopilot;

[0019] The propeller shaft is installed by passing one end inside the ship model through the fixing hole on the inner through-shaft beam and the other end outside the ship model through the fixing hole on the outer through-shaft beam. The propeller shaft is then connected to the output shaft of the autopilot via a coupling.

[0020] Remove the shafting auxiliary frame assembly to complete the installation of the ship model system for self-propulsion testing.

[0021] Preferably, the inner auxiliary frame further includes inner longitudinal beams and inner supporting crossbeams, with both ends of the inner through-shaft crossbeams correspondingly connected to the lower ends of the two inner longitudinal beams, and the inner supporting crossbeams respectively connected to the upper ends of the two inner longitudinal beams; the outer auxiliary frame further includes outer longitudinal beams and outer supporting crossbeams, with both ends of the outer through-shaft crossbeams correspondingly connected to the lower ends of the two outer longitudinal beams, and the outer supporting crossbeams respectively connected to the upper ends of the two outer longitudinal beams; the inner supporting crossbeams and the outer supporting crossbeams are respectively supported and placed on the upper surface of the ship model;

[0022] The installation of the propeller shaft also includes:

[0023] Adjust the height of the inner longitudinal beam and / or the outer longitudinal beam so that the distance d1 between the inner through-shaft beam and the inner support beam, the distance d2 between the outer through-shaft beam and the outer support beam, and the distance L between the inner support beam and the outer support beam satisfy the following positional relationship:

[0024]

[0025] Wherein, θ is the preset installation angle of the propeller shaft.

[0026] In general, the technical solution conceived by this invention has the following technical effects:

[0027] 1. The ship model system installation device proposed in this invention achieves relative position matching between the motor and the self-propulsion instrument through the mounting frame assembly. After the motor and the self-propulsion instrument are connected and installed on the mounting frame assembly, they can be installed as a whole onto the ship model to form a modular installation method, which can avoid the separate position adjustment of the motor and the self-propulsion instrument. Furthermore, the auxiliary positioning of both ends of the propeller shaft is achieved through the auxiliary frame assembly of the internal and external shaft system, which can quickly complete the installation of transmission devices such as motors, self-propulsion instruments, and propeller shafts inside the ship model, improving the efficiency and accuracy of the self-propulsion installation process.

[0028] 2. The preferred shafting auxiliary frame assembly in this invention fully utilizes the characteristic that the ship model is processed starting from its upper surface, and is placed on the upper plane of the ship model to support and position the propeller shaft.

[0029] 3. By setting tracks on the inner / outer longitudinal beams to adjust the height of both ends of the propeller shaft, and measuring the distance difference between the two ends of the propeller shaft and the upper plane of the model, the angle of the propeller shaft can be calculated and the installation angle can be precisely adjusted to match the preset installation angle. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a ship model system installation device for self-propelled testing provided by the present invention;

[0031] Figure 2 This is a schematic diagram AA of the motor mounting cross section of a ship model system mounting device for self-propulsion testing provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the self-propulsion instrument installation cross section BB of a ship model system installation device for self-propulsion testing provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the cross section (CC) of the inner auxiliary frame of a ship model system installation device for self-propulsion testing provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram (DD) of the cross section of the external auxiliary frame of a ship model system installation device for self-propulsion testing provided in an embodiment of the present invention;

[0035] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0036] 1-Ship model, 2-Motor, 3-Motor support frame, 4-Motor mounting plate, 5-Fixed support, 6-Motor coupling, 7-Autopilot, 8-Autopilot pad, 9-Side fastener, 10-Top fastener, 11-Autopilot coupling, 12-Inner longitudinal beam, 13-Inner support beam, 14-Inner through-shaft beam, 15-Propeller shaft, 16-Through-shaft hole, 17-Outer support beam, 18-Outer longitudinal beam, 19-Outer through-shaft beam, 20-Propeller, 21-First bolt, 22-Second bolt, 23-Fixing hole, 24-Third bolt, 25-Fixing hole. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1As shown, this invention provides a ship model system installation device for self-propulsion testing, including a mounting frame assembly and a shafting auxiliary frame assembly. The mounting frame assembly includes a motor mounting plate 4 and a self-propulsion instrument pad 8. The motor mounting plate 4 is used to fix a motor 2, which provides power to drive a propeller 20 to rotate via the shafting. The self-propulsion instrument pad 8 is used to fix a self-propulsion instrument 7, which measures the thrust and torque emitted from the propeller shafting. The motor mounting plate 4 and the self-propulsion instrument pad 8 are fixedly connected, forming a single module for installation. This reduces redundancy and installation errors for installers, avoids repeated individual position adjustments of the motor 2 and the self-propulsion instrument 7, and effectively ensures the alignment of the motor shaft and the self-propulsion instrument shaft. The bottom of the motor mounting plate 4 is connected to the ship model 1 via a fixed support 5. A motor coupling 6 connects the output shaft of the motor 2 and the input shaft of the self-propulsion instrument 7 to achieve power transmission.

[0039] The shafting auxiliary frame assembly is used to assist in the installation of the propeller shaft 15. It includes an inner auxiliary frame and an outer auxiliary frame that are fixed by the ship model. The lower part of the inner auxiliary frame is provided with an inner through-shaft beam 14, and the lower part of the outer auxiliary frame is provided with an outer through-shaft beam 19. The inner through-shaft beam 14 and the outer through-shaft beam 19 are respectively provided with fixing holes 23. When the propeller shaft 15 of the ship model system is installed, the fixing holes 23 on the inner through-shaft beam 14 are used for the end of the propeller shaft 15 located inside the ship model 1 to pass through and be positioned, and the fixing holes 23 on the outer through-shaft beam 19 are used for the end of the propeller shaft 15 located outside the ship model 1 to pass through and be positioned. In use, the position of the inner through-shaft beam 14 and / or the outer through-shaft beam 19 is adjusted to align and connect the propeller shaft 15 with the output shaft of the autopilot 7 to assist in the installation.

[0040] Optionally, the motor coupling 6 is in the form of a universal joint coupling, which can rotate and transmit power when the shaft systems of the motor 2 and the self-propelled instrument 7 are not properly aligned.

[0041] Furthermore, the mounting bracket assembly also includes an autopilot mounting bracket, which cooperates with the autopilot pad 8 to fix the autopilot 7. The autopilot mounting bracket includes side fixing parts 9 and top fixing parts 10. The side fixing parts 9 are respectively connected to the upper sides of the autopilot pad 8, and the top fixing parts 10 are connected to the top of the two side fixing parts 9. The autopilot 7 and the top fixing parts 10 are connected by a first bolt 21. The first bolt 21 passes through the top fixing parts 10 and is screwed into the autopilot 7 to achieve the connection and fixation. By adjusting the vertical position of the first bolt 21 relative to the top fixing parts 10 or adjusting the depth of the first bolt 21 screwed into the autopilot 7, a certain height adjustment of the autopilot 7 can be achieved, so that the autopilot 7 has a certain range of height adjustment margin, thereby enabling the input shaft of the autopilot 7 to be aligned and connected with the output shaft of the motor 2, reducing the requirements for installation accuracy. The cross-sectional view of the connection between the autopilot 7 and the autopilot mounting bracket on the ship model is shown below. Figure 3 As shown.

[0042] Furthermore, the self-propelled instrument coupling 11 is a universal joint coupling used to connect the self-propelled instrument 7 and the propeller shaft 15 to realize the transmission of rotational power.

[0043] Motor 2 and autopilot 7 are housed within ship model 1. To facilitate modular installation of motor 2 and autopilot 7, motor mounting plate 4 is L-shaped. Autopilot pad 8 is connected and fixed to the vertical plate (side plate) of the L-shaped motor mounting plate 4, which can be fixed via welding or bolts, etc., with no specific limitation. The threaded holes on the vertical plate of motor mounting plate 4 match the side of motor 2 for fixation. A motor support frame 3 is provided on the horizontal plate of motor mounting plate 4. The shape of motor support frame 3 matches the wall surface of motor 2, meaning the wall surface of motor 2 can fit snugly against motor support frame 3, thus providing better support. Shock-absorbing material is placed between them to reduce motor vibration. A cross-sectional view of the connection between motor 2, motor mounting plate 4, and motor support frame 3 in ship model 1 is shown below. Figure 2 As shown.

[0044] The ship model 1 is manufactured by processing the actual ship's lines according to a certain scale λ. Usually, when processing ship models, the model is processed upside down, that is, the top surface of the model is placed upside down on a plane as the reference plane of the model. This processing method can ensure that the uppermost edge of the model is on the same plane.

[0045] Furthermore, the inner auxiliary frame also includes inner longitudinal beams 12 and inner support beams 13. The two ends of the inner through-shaft beam 14 are connected to the lower ends of the two inner longitudinal beams 12, and the inner support beam 13 is connected to the upper ends of the two inner longitudinal beams 12. The outer auxiliary frame also includes outer longitudinal beams 18 and outer support beams 17. The two ends of the outer through-shaft beam 19 are connected to the lower ends of the two outer longitudinal beams 18, and the outer support beam 17 is connected to the upper ends of the two outer longitudinal beams 18. The inner support beams 13 and outer support beams 17 are respectively supported and placed on the upper surface of the ship model 1, serving to support the positioning of the propeller shaft 15. The inner and outer auxiliary frames are mounted on the ship model to fix the auxiliary frame, facilitating the installation and disassembly of the auxiliary frame for auxiliary positioning and installation of the propeller shaft. Figure 4 and Figure 5 As shown.

[0046] Furthermore, the inner support beam 13 and the outer support beam 17 are respectively provided with horizontal rails, through which bolts can pass. The inner support beam 13 is connected to the inner longitudinal beam 12 at its corresponding horizontal rail by a second bolt 22 to adjust the distance between the two inner longitudinal beams 12. The outer support beam 19 is connected to the outer longitudinal beam 18 at its corresponding horizontal rail by a third bolt 24 to adjust the distance between the two outer longitudinal beams 18. This allows for the alignment of the propeller shaft 15 during installation by limiting the position of the ship model 1. For example, for the inner auxiliary frame, the distance between the two inner longitudinal beams can be adjusted so that the two inner longitudinal beams contact the inner walls on both sides of the ship model, making the inner through-shaft beam symmetrical about the centerline of the ship model, thus facilitating the alignment and positioning of the propeller shaft. At the same time, it can also meet the installation requirements of the propeller shaft 15 in ship models 1 of different sizes.

[0047] Furthermore, vertical rails are provided on the inner longitudinal beam 12 and the outer longitudinal beam 18 respectively. Bolts can pass through the vertical rails. The inner longitudinal beam 12 is connected to the inner support beam 13 at its corresponding vertical rail by a second bolt 22 to realize the height adjustment of the inner longitudinal beam 12. The outer longitudinal beam 18 is connected to the outer support beam 17 at its corresponding vertical rail by a third bolt 24 to realize the height adjustment of the outer longitudinal beam 18. When the propeller shaft 15 of the ship model system is installed, the height of both ends of the propeller shaft 15 is adjusted by adjusting the height of the inner longitudinal beam 12 and / or the outer longitudinal beam 18 so that the installation angle of the propeller shaft 15 is consistent with the preset angle.

[0048] This embodiment takes into account that the installation angle between the propeller shaft and the hull needs to be consistent with the design state during the installation of the ship model system. The existing installation process requires the installer to repeatedly adjust and measure, which is time-consuming and labor-intensive. Therefore, it is proposed to set up a shaft system auxiliary frame assembly to assist in the positioning of the shaft system during installation. Specifically, by setting the height of the inner and outer longitudinal beams to be adjustable, the installation angle of the propeller shaft can be precisely controlled by adjusting the height of the inner and / or outer longitudinal beams. The installation angle of the propeller shaft can be reflected by the height of the inner and outer longitudinal beams, which is convenient for control and adjustment and helps to improve the installation efficiency and accuracy of the shaft system.

[0049] The inner through-shaft beam 14 and the outer through-shaft beam 19 are respectively provided with a plurality of fixing holes 23 arranged side by side, which can enable the plurality of propeller shafts 15 to pass through the fixing holes 23 at the corresponding positions when the ship model 1 needs to install a plurality of propeller shafts 5, thereby assisting in the positioning and installation of the plurality of propeller shafts 15.

[0050] The fixed support 5 is made of wood. According to the different shapes inside the ship model 1, the fixed support 5 is cut so that the shape of its bottom fits the inner surface of the ship model 1, and is fixedly connected by strong adhesive such as epoxy resin. The lower end of the motor mounting plate 4 is also fixedly connected to the fixed support 5 by adhesive, so as to realize the fixed installation of motor 2 and self-propelled instrument 7 inside the ship model 1.

[0051] This embodiment provides a method for installing a ship model system for self-propelled testing:

[0052] The motor 2 is fixedly installed on the motor mounting plate 4, the self-propelled instrument 7 is fixedly installed on the self-propelled instrument pad 8, and the output shaft of the motor 2 and the input shaft of the self-propelled instrument 7 are connected through the motor coupling 6.

[0053] The mounting frame assembly, after the motor 2 and the self-propulsion device 7 are installed, is mounted on the ship model 1 via the fixed support 5 to install the motor 2 and the self-propulsion device 7;

[0054] One end of the propeller shaft 15 located inside the ship model 1 passes through the fixing hole 23 on the inner through-shaft beam 14, and the other end of the propeller shaft 15 located outside the ship model 1 passes through the fixing hole 23 on the outer through-shaft beam 19. The propeller shaft 15 located outside the ship model 1 is provided with a propeller 20. The end of the propeller shaft 15 located inside the ship model 1 is connected to the output shaft of the self-propulsion instrument 7 through the self-propulsion instrument coupling 11.

[0055] The inner longitudinal beam 12 and the outer longitudinal beam 18 have scales, allowing direct reading of the distances between the inner through-shaft beam 14 and the inner support beam 13, and between the outer through-shaft beam 19 and the outer support beam 17. The inner support beam 13 and the outer support beam 17 are supported and placed on the upper surface of the ship model 1. By continuously adjusting the height of the inner longitudinal beam 12 and / or the outer longitudinal beam 18, the distance d1 between the inner through-shaft beam 14 and the inner support beam 13, the distance d2 between the outer through-shaft beam 19 and the outer support beam 17, and the horizontal distance L between the inner support beam 13 and the outer support beam 17 are made to satisfy the following positional relationships:

[0056]

[0057] Wherein, θ is the preset installation angle of the propeller shaft 15;

[0058] The propeller shaft 15 is initially positioned by passing through the hull through the through-shaft hole 16 on the ship model 1 through the above process. Then, the through-shaft hole 16 is glued and sealed to fix the propeller shaft 15. Finally, the shaft system auxiliary frame assembly is removed to complete the installation of the ship model system for self-propulsion testing.

[0059] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A ship model system installation device for self-propelled testing, characterized in that, include: The mounting bracket assembly and shaft system auxiliary bracket assembly include a motor mounting plate and an autopilot pad that are fixedly connected. The motor mounting plate is used to fix the motor, and the autopilot pad is used to fix the autopilot. The bottom of the motor mounting plate is connected to the ship model through a fixed support. The output shaft of the motor and the input shaft of the autopilot are connected through a coupling. The shafting auxiliary frame assembly includes an inner auxiliary frame and an outer auxiliary frame, which are respectively fixed by the ship model. The lower part of the inner auxiliary frame is provided with an inner through-shaft beam, and the lower part of the outer auxiliary frame is provided with an outer through-shaft beam. The inner through-shaft beam and the outer through-shaft beam are respectively provided with fixing holes. When the propeller shaft of the ship model system is installed, the fixing holes on the inner through-shaft beam are used for the propeller shaft located inside the ship model to pass through and be positioned, and the fixing holes on the outer through-shaft beam are used for the propeller shaft located outside the ship model to pass through and be positioned.

2. The ship model system installation device for self-propelled testing as described in claim 1, characterized in that, The mounting bracket assembly also includes an autopilot mounting bracket, which includes side fasteners and a top fastener. The side fasteners are respectively connected to the upper sides of the autopilot pad, and the top fastener is connected to the top of the two side fasteners. The autopilot is connected to the top fastener by a first bolt and its vertical position is adjustable.

3. The ship model system installation device for self-propelled testing as described in claim 1, characterized in that, The motor mounting plate includes a side plate and a horizontal plate that are perpendicularly connected to each other. The motor is connected and fixed to the side plate of the motor mounting plate. The self-propelled instrument pad is connected and fixed to the side plate of the motor mounting plate. A motor support frame is provided on the horizontal plate of the motor mounting plate. The motor is supported and placed on the motor support frame. The shape of the motor support frame matches the wall surface of the motor.

4. The ship model system installation device for self-propelled testing as described in any one of claims 1-3, characterized in that, The inner auxiliary frame also includes inner longitudinal beams and inner support beams. The two ends of the inner through-shaft beam are connected to the lower ends of the two inner longitudinal beams, and the inner support beam is connected to the upper ends of the two inner longitudinal beams. The outer auxiliary frame also includes outer longitudinal beams and outer support beams. The two ends of the outer through-shaft beam are connected to the lower ends of the two outer longitudinal beams, and the outer support beam is connected to the upper ends of the two outer longitudinal beams. The inner support beams and the outer support beams are respectively supported and placed on the upper surface of the ship model.

5. The ship model system installation device for self-propelled testing as described in claim 4, characterized in that, The inner support beam and the outer support beam are respectively provided with horizontal rails, through which bolts can pass. The inner support beam is connected to the inner longitudinal beam at its corresponding horizontal rail by a second bolt to adjust the distance between the two inner longitudinal beams. The outer support beam is connected to the outer longitudinal beam at its corresponding horizontal rail by a third bolt to adjust the distance between the two outer longitudinal beams.

6. The ship model system installation device for self-propelled testing as described in claim 4, characterized in that, Vertical rails are provided on the inner longitudinal beam and the outer longitudinal beam respectively. Bolts can pass through the vertical rails. The inner longitudinal beam is connected to the inner support beam at its corresponding vertical rail by a second bolt to realize the height adjustment of the inner longitudinal beam. The outer longitudinal beam is connected to the outer support beam at its corresponding vertical rail by a third bolt to realize the height adjustment of the outer longitudinal beam. When the propeller shaft of the ship model system is installed, the height of both ends of the propeller shaft is adjusted by adjusting the height of the inner longitudinal beam and / or the outer longitudinal beam to make the installation angle of the propeller shaft consistent with the preset installation angle.

7. The ship model system installation device for self-propelled testing as described in any one of claims 1-3, characterized in that, The inner through-shaft crossbeam and the outer through-shaft crossbeam are respectively provided with a plurality of fixing holes arranged side by side for assisting in the installation of the plurality of propeller shafts.

8. The ship model system installation device for self-propelled testing as described in any one of claims 1-3, characterized in that, The fixed support is a wooden support, and the shape of the bottom of the wooden support fits the inner surface of the ship model. The fixed support is fixedly connected to the ship model by adhesive. The lower end of the motor mounting plate is fixedly connected to the fixed support by adhesive.

9. An installation method for a ship model system installation device for self-propelled testing based on any one of claims 1-8, characterized in that, include: The motor is fixedly installed on the motor mounting plate, the autopilot is fixedly installed on the autopilot pad, and the output shaft of the motor and the input shaft of the autopilot are connected by a coupling. The mounting bracket assembly, after the motor and the autopilot are installed, is mounted on the ship model via the fixed support to install the motor and the autopilot; The propeller shaft is installed by passing one end inside the ship model through the fixing hole on the inner through-shaft beam and the other end outside the ship model through the fixing hole on the outer through-shaft beam. The propeller shaft is then connected to the output shaft of the autopilot via a coupling. Remove the shafting auxiliary frame assembly to complete the installation of the ship model system for self-propulsion testing.

10. The installation method as described in claim 9, characterized in that, The inner auxiliary frame also includes inner longitudinal beams and inner support beams. The two ends of the inner through-shaft beam are connected to the lower ends of the two inner longitudinal beams, and the inner support beam is connected to the upper ends of the two inner longitudinal beams. The outer auxiliary frame also includes outer longitudinal beams and outer support beams. The two ends of the outer through-shaft beam are connected to the lower ends of the two outer longitudinal beams, and the outer support beam is connected to the upper ends of the two outer longitudinal beams. The inner support beams and the outer support beams are respectively supported and placed on the upper surface of the ship model. The installation of the propeller shaft also includes: Adjust the height of the inner longitudinal beam and / or the outer longitudinal beam so that the distance d1 between the inner through-shaft beam and the inner support beam, the distance d2 between the outer through-shaft beam and the outer support beam, and the distance L between the inner support beam and the outer support beam satisfy the following positional relationship: ； Wherein, θ is the preset installation angle of the propeller shaft.

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