A rudder system with bidirectional anti-high overload capability

Abstract

This invention discloses a rudder system with bidirectional high overload resistance, belonging to the field of rudder motor technology; it solves the problems of poor overload resistance and inability to miniaturize existing rudder systems. The rudder system of this invention includes a first set of transmission components and a second set of transmission components with identical structures, as well as an integrated main frame structure; a hollow cylindrical rudder blade fixing shaft is provided vertically at the center of the integrated main frame structure; a first fixing platform and a second fixing platform with identical structures and internal cavities are arranged around this rudder blade fixing shaft, the first and second fixing platforms being symmetrical about the rudder blade fixing shaft; the first set of transmission components is located within the cavity of the first fixing platform, and the second set of transmission components is located within the cavity of the second fixing platform. This invention improves the overall high overload resistance of the rudder system.

Description

Technical Field

[0001] This invention relates to the field of aircraft rudder system technology, and in particular to a rudder system with bidirectional high overload resistance capability. Background Technology

[0002] As a crucial actuator for controlling the flight attitude of an aircraft, the performance of the servo motor directly determines the quality of the aircraft. To meet the needs of next-generation aircraft, electric servo motors must be characterized by small size, high integration, and resistance to high overload. Long-range high-overload aircraft will experience short-term, multi-directional high-overload impacts during launch, which places high design requirements on the servo motors.

[0003] Currently, commonly used servo motor structures in China have many problems in terms of miniaturization and high overload resistance. Common transmission mechanisms are large in mass and volume, which is not conducive to miniaturization and lightweight design. They also have problems such as low transmission efficiency and serious power consumption. Under high overload impact, problems such as damage to certain parts of the transmission mechanism and bearing damage are likely to occur, resulting in a decrease in transmission capacity or even failure. Moreover, most common transmission mechanisms can only withstand unidirectional overload impact and do not have the ability to withstand bidirectional high overload.

[0004] Currently, the servo motors of domestically produced aircraft are relatively large in size and mass. Under high overload impact conditions exceeding 10,000g, the components are prone to deformation or even damage, making it difficult to meet the conditions for normal operation after bidirectional high overload impact. Therefore, in order to address the above problems, how to overcome the difficulties of the high overload impact environment of aircraft within a limited space and design a servo motor with bidirectional high overload resistance is an important technical problem that urgently needs to be solved by those skilled in the art.

[0005] Existing high overload rudder system technologies suffer from complex assembly processes, resulting in low production output and long production times during mass production. Summary of the Invention

[0006] Based on the above analysis, the present invention aims to provide a rudder system with bidirectional high overload resistance to solve the problems of poor overload resistance and inability to be miniaturized in traditional servo mechanisms.

[0007] The objective of this invention is mainly achieved through the following technical solutions:

[0008] The present invention provides a rudder system with bidirectional high overload resistance, comprising a first set of transmission components and a second set of transmission components with identical structures, as well as an integrated main frame structure;

[0009] A hollow cylindrical rudder fixing shaft is provided at the center of the integrated main frame structure along the vertical direction; around the rudder fixing shaft are a first fixing platform and a second fixing platform with the same structure and an internal cavity, and the first fixing platform and the second fixing platform are symmetrical about the rudder fixing shaft; a first set of transmission components is located in the cavity of the first fixing platform, and a second set of transmission components is located in the cavity of the second fixing platform.

[0010] In one possible design, the first set of transmission components includes a first servo motor and a first ball screw; the second set of transmission components includes a second servo motor and a second ball screw.

[0011] In one possible design, the top and bottom ends of both the first and second sets of transmission components are equipped with anti-overload components.

[0012] In one possible design, the overload protection component includes an overload protection plug and steel balls.

[0013] In one possible design, the rudder system also includes a first middle cover and a second middle cover, with the first middle cover located on the top surface of the first fixed platform and the second middle cover located on the top surface of the second fixed platform.

[0014] In one possible design, the steel balls are kept 0.1-0.2 mm away from both ends of the first and second ball screws.

[0015] In one possible design, the first servo motor includes a first servo motor rotor; the second servo motor includes a second servo motor rotor.

[0016] In one possible design, the ball bearings maintain a distance of 0.1-0.2 mm from both ends of the first servo motor rotor and the second servo motor rotor.

[0017] In one possible design, both the first and second ball screws are provided with screw nuts; both the first and second ball screws are provided with screw bearings near their top and bottom ends.

[0018] In one possible design, both the first and second ball screws are provided with screw top covers near their top ends; the screw top covers are used to fix the top of the corresponding ball screw to the integrated frame structure.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] (1) The present invention has an anti-overload design for the main frame: The present invention adopts an integrated main frame structure, which integrates the first group of transmission components and the second group of transmission components into the integrated main frame structure, which not only improves the impact resistance of the rudder system, but also improves the integration of the rudder system.

[0021] (2) The present invention has an overload-resistant design for the drive control box of the rudder system: by setting a potting port on the top surface of the first drive control box and the second drive control box and potting glue, the drive module and control module of the rudder system are fixed, which not only greatly reduces the risk of short circuit between lines, but more importantly, protects the electronic components, resists the impact of shock, and ensures the normal operation of the rudder system.

[0022] (3) The present invention has an anti-overload design for the transmission structure: anti-overload components are set at the top and bottom of the first group of transmission components and the second group of transmission components, and a distance of 0.1-0.2mm is ensured between the two ball screws, the two motor rotors and the steel balls, so that the two ball screws and the two motor rotors have a certain buffer space when subjected to impact, thereby reducing the impact of overload impact, and thus achieving the effect of mitigating impact force and protecting the normal operation of the transmission structure under high overload conditions.

[0023] (4) The present invention has designed the rudder shaft to withstand high overload: The present invention uses a sliding bearing as the bearing bearing, which has the advantages of wear resistance and strong load-bearing capacity; the circumferential displacement sensor used is a coaxial potentiometer, which has an overload resistance of more than 10,000g. The present invention ensures the reliability of the rudder shaft under overload conditions.

[0024] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0025] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0026] Figure 1 A schematic diagram of the overall structure of the rudder system with bidirectional high overload resistance provided by the present invention;

[0027] Figure 2 This is a structural schematic diagram of the integrated main frame structure provided by the present invention;

[0028] Figure 3 A schematic diagram of the structure of the first ball screw and the first servo motor in the first fixed platform provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the rudder shaft provided by the present invention.

[0030] Figure label:

[0031] 1-Integrated main frame structure; 2-First fixed platform; 3-Second fixed platform; 4-Rudder blade fixing shaft; 5-First middle cover; 6-Second middle cover; 7-First drive control box; 8-Second drive control box; 9-Filling port; 10-Overload-resistant component; 11-Overload-resistant plug; 12-Steel ball; 13-Lead screw gear; 14-Lead screw top cover; 15-Lead screw bearing; 16-First ball screw; 17-Lead screw nut; 18-Motor gear; 19-Motor mounting screw; 20-First servo motor; 21-First motor rotor; 22-Rudder blade; 23-Rudder shaft; 24-Circumferential angular displacement sensor; 25-Key; 26-Sliding bearing; 27-Rotating shaft; 28-Angular displacement sensor mounting screw. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0033] This invention provides a rudder system with bidirectional high overload resistance, such as... Figures 1 to 4 As shown, the rudder system includes a first set of transmission components and a second set of transmission components with identical structures, as well as an integrated main frame structure 1. A hollow cylindrical rudder blade fixing shaft 4 is provided vertically at the center of the integrated main frame structure 1. A first fixing platform 2 and a second fixing platform 3 with identical structures and internal cavities are provided around the rudder blade fixing shaft 4. The first fixing platform 2 and the second fixing platform 3 are symmetrical about the rudder blade fixing shaft 4. The first set of transmission components is located in the cavity of the first fixing platform 2, and the second set of transmission components is located in the cavity of the second fixing platform 3.

[0034] Specifically, the rudder blade fixing shaft 4 is vertically positioned at the center of the integrated main frame structure 1. The first fixing platform 2 and the second fixing platform 3 are both arranged around the rudder blade fixing shaft 4. A first spacer and a second spacer with the same structure and symmetrical about the rudder blade fixing shaft 4 are also provided around the rudder blade fixing shaft 4. The first spacer and the second spacer are respectively located in two gaps formed on both sides of the first fixing platform 2 and the second fixing platform 3. The first spacer and the second spacer are provided with grooves to reduce the weight of the integrated main frame structure 1.

[0035] The first fixed platform 2, the second fixed platform 3, the first spacer platform, and the second spacer platform are all integrally formed with the rudder blade fixing shaft 4. The cross-sections of the first fixed platform 2 and the second fixed platform 3 are both fan-shaped and symmetrical about the rudder blade fixing shaft 4. This is to reduce the weight of the integrated main frame structure and reduce its volume. Cavities are provided in both the first fixed platform 2 and the second fixed platform 3. The first set of transmission components is located in the cavity of the first fixed platform 2. The top and bottom surfaces of the first fixed platform 2 are used to constrain the two ends of the first set of transmission components, respectively. The second set of transmission components is located in the cavity of the second fixed platform 3. The top and bottom surfaces of the second fixed platform 3 are used to constrain the two ends of the second set of transmission components, respectively.

[0036] As the main structural component of the rudder system, the main frame structure is subjected to the action of various parts during overload impact. The main frame of the existing rudder system is usually fixed by fasteners such as screws and bolts to splice and fix multiple parts. However, the connecting fasteners are the weak points of the main frame. Under high overload impact, they are prone to damage or even breakage, which leads to a decrease in the performance of the transmission components of the rudder system and ultimately causes the rudder system to be damaged and unable to work properly.

[0037] Compared with existing technologies, the main frame of this invention adopts an integrated structure without connecting screws or bolts. Under high overload conditions, the impact forces generated by the first and second sets of transmission components within the rudder system are borne by the integrated main frame structure 1, without affecting the performance of the rudder system, thus greatly increasing the rudder system's ability to resist overload impacts. Furthermore, this invention places the first set of transmission components inside the first fixed platform 2 and the second set of transmission components inside the second fixed platform 3, improving the integration of the rudder system, reducing its footprint, and providing a foundation for the miniaturization of rudder systems.

[0038] It should be noted that the integrated main frame structure 1 of the present invention is made of high-strength aluminum alloy, which can ensure its ability to resist high overload without increasing the total weight of the rudder system.

[0039] To improve the overload resistance of the first and second sets of transmission components, both the top and bottom ends of the first and second sets of transmission components are provided with overload protection components 10. The first set of transmission components includes a first servo motor 20 and a first ball screw 16; the second set of transmission components includes a second servo motor and a second ball screw.

[0040] When the rudder system experiences a high overload due to an upward impact force, the first ball screw 16, the first servo motor 20, the second ball screw, and the second servo motor move upward together due to the deformation of the integrated main frame structure 1. They stop when they come into contact with the anti-overload component 10. The anti-overload component 10 is used to buffer the overload impact force and prevent damage to the two ball screws and the two servo motors. After the impact ends, the integrated main frame structure 1 returns to its original shape, and the first ball screw 16, the first servo motor 20, the second ball screw, and the second servo motor return to their initial positions, allowing the rudder system to maintain normal operation.

[0041] When the rudder system experiences a high overload due to a downward impact force, the first ball screw 16, the first servo motor 20, the second ball screw, and the second servo motor move downward together due to the deformation of the integrated main frame structure 1. They stop when they come into contact with the anti-overload component 10. The anti-overload component 10 is used to buffer the overload impact force and prevent damage to the two ball screws and the two servo motors. After the impact ends, the integrated main frame structure 1 returns to its original shape, and the first ball screw 16, the first servo motor 20, the second ball screw, and the second servo motor return to their initial positions, allowing the rudder system to maintain normal operation.

[0042] It should be noted that the overload protection component 10 maintains a distance of 0.1-0.2mm from the top and bottom of the first servo motor 20, the first ball screw 16, the second servo motor, and the second ball screw, in order to ensure the normal operation of the first servo motor 20, the first ball screw 16, the second servo motor, and the second ball screw.

[0043] To further improve the overload resistance of the rudder system, the overload resistance component 10 of the present invention includes an overload resistance plug 11 and a steel ball 12; the overload resistance plug 11 is provided with a groove, and the steel ball 12 can be partially embedded in the groove; the overload resistance plug 11 is located at one end away from the first group of transmission components and the second group of transmission components, and the steel ball 12 is located at one end close to the first group of transmission components and the second group of transmission components.

[0044] Specifically, when the rudder system receives a high upward (or downward) overload, the integrated main frame structure 1 will deform, and the first set of transmission components in the first fixed platform 2 and the second set of transmission components in the second fixed platform 3 will move upward (or downward) and stop moving after contacting the steel ball 12. The steel ball 12 is used to buffer the overload impact force so that the first set of transmission components and the second set of transmission components are not damaged. After the impact ends, the integrated main frame structure 1 will recover its deformation, and the first set of transmission components and the second set of transmission components will return to their initial positions, and the rudder system will continue to work normally.

[0045] It should be noted that the rudder system of the present invention also includes a first middle cover 5 and a second middle cover 6. The first middle cover 5 is disposed on the top surface of the first fixed platform 2, and the second middle cover 6 is disposed on the top surface of the second fixed platform 3. Both the first middle cover 5 and the second middle cover 6 are provided with threaded holes. Both the bottom ends of the first fixed platform 2 and the second fixed platform 3 are provided with threaded holes. The overload-resistant screw plug 11 is provided with threaded holes on its outside, and the overload-resistant screw plug 11 is threadedly connected to the first middle cover 5, the second middle cover 6, and the bottom ends of the first fixed platform 2 and the second fixed platform 3.

[0046] Specifically, the overload protection component 10 for the first ball screw 16 is configured as follows: at the top of the first ball screw 16, an overload protection plug 11 is fixed to the first middle cover 5. The groove opening of the overload protection plug 11 faces downward, and the steel ball 12 is partially embedded in the groove of the overload protection plug 11. The distance between the unembedded part and the top of the first ball screw 16 below it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload protection component 10 does not affect the normal operation of the first ball screw 16 when no high overload occurs. Additionally, at the bottom of the first ball screw 16, the corresponding overload-resistant plug 11 is fixed to the bottom of the first fixed platform 2. The opening of the overload-resistant plug 11 faces upward, and the bottom part of the steel ball 12 is embedded in the overload-resistant plug 11. The distance between the unembedded part and the bottom of the first ball screw 16 above it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload-resistant component 10 does not affect the normal operation of the first ball screw 16 when no overload occurs.

[0047] For the second ball screw, the overload protection component 10 is specifically configured as follows: at the top of the second ball screw, the corresponding overload protection plug 11 is fixed on the second middle cover 6. The groove opening of the overload protection plug 11 faces downward, and the steel ball 12 is partially embedded in the groove of the overload protection plug 11. The distance between the unembedded part and the top of the first ball screw 16 below it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload protection component 10 does not affect the normal operation of the top of the second ball screw when no overload occurs. Additionally, at the bottom of the second ball screw, the corresponding overload-resistant plug 11 is fixed to the bottom of the second fixed platform 3. The opening of the overload-resistant plug 11 faces upward, and the bottom part of the steel ball 12 is embedded in the overload-resistant plug 11. The distance between the unembedded part and the bottom of the second ball screw above it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload-resistant component 10 does not affect the normal operation of the bottom of the second ball screw when no overload occurs.

[0048] It should be noted that the first servo motor 20 and the second servo motor of the present invention have the same structure and the same overload protection scheme. Specifically, the first servo motor 20 of the present invention includes a first motor rotor 21. At the top of the first motor rotor 21, the corresponding overload protection plug 11 is fixed on the first middle cover 5. The groove opening of the overload protection plug 11 faces downward. The steel ball 12 is partially embedded in the groove of the overload protection plug 11. The distance between the unembedded part and the top of the first motor rotor 21 below it is 0.1-0.2mm. The purpose of controlling the distance between the two within the range of 0.1-0.2mm is to ensure that the overload protection component 10 does not affect the normal operation of the first servo motor 20 when no overload occurs. Additionally, at the bottom of the first motor rotor 21, the corresponding overload-resistant plug 11 is fixed to the bottom of the first fixed platform 2. The opening of the overload-resistant plug 11 faces upward, and the bottom part of the steel ball 12 is embedded in the overload-resistant plug 11. The distance between the unembedded part and the bottom of the first motor rotor 21 above it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload-resistant component 10 does not affect the normal operation of the first servo motor 20 when no overload occurs.

[0049] The second servo motor of the present invention includes a second motor rotor. At the top of the second motor rotor, an anti-overload plug 11 is fixed on the second middle cover 6. The groove opening of the anti-overload plug 11 faces downward. The steel ball 12 is partially embedded in the groove of the anti-overload plug 11. The distance between the unembedded part and the top of the second motor rotor below it is 0.1-0.2mm. The purpose of controlling the distance between the two within the range of 0.1-0.2mm is to ensure that the anti-overload component 10 does not affect the normal operation of the second servo motor when no overload occurs. Additionally, at the bottom of the second motor rotor, the corresponding overload-resistant plug 11 is fixed to the bottom of the second fixed platform 3. The opening of the overload-resistant plug 11 faces upward, and the bottom part of the steel ball 12 is embedded in the overload-resistant plug 11. The distance between the unembedded part and the bottom of the second motor rotor above it is 0.1-0.2mm. The purpose of setting the distance between the two in the range of 0.1-0.2mm is to ensure that the overload-resistant component 10 does not affect the normal operation of the second servo motor when no overload occurs.

[0050] Compared with the prior art, the present invention provides overload protection components 10 (overload protection plugs 11 + steel balls 12) at the top and bottom of the first ball screw 16, the first motor rotor 21, the second ball screw, and the second motor rotor, respectively, and maintains a distance of 0.1 to 0.2 mm between the two ends of the two ball screws and the two motor rotors and the steel balls 12, ensuring that the two ball screws and the two motor rotors have a certain buffer space when subjected to impact, thereby reducing the impact of overload impact, and thus playing the role of mitigating impact force and protecting the normal operation of the transmission structure under high overload conditions.

[0051] To ensure the normal operation of the first ball screw 16 and the second ball screw, both the first ball screw 16 and the second ball screw of the present invention are provided with screw nuts 17; and both the first ball screw 16 and the second ball screw are provided with screw bearings 15 near their top and bottom ends.

[0052] It should be noted that a screw top cover 14 is also provided near the top of the first ball screw 16 and the second ball screw; the screw top cover 14 is used to fix the top of the corresponding ball screw to the integrated frame structure.

[0053] Specifically, the first ball screw 16 and the second ball screw have the same structure. Taking the first ball screw 16 as an example: A screw top cover 14 is provided near the top of the first ball screw 16, positioned above the screw bearing 15. The screw top cover 14 is used to fix the top of the first ball screw 16 to the top of the first fixed platform 2. Above the screw top cover 14 (below the overload protection component 10), a screw gear 13 is also provided. The screw gear 13 meshes with the motor gear 18 of the first servo motor 20, thereby enabling the normal operation of the first ball screw 16.

[0054] It should be explained that the process of installing the first ball screw 16 into the cavity of the first fixed platform 2 is as follows: first, the screw nut 17 is installed onto the first ball screw 16; then, the screw bearing 15 is installed onto the top and bottom of the first ball screw 16; then, the first ball screw 16 is installed into the cavity of the first fixed platform 2; subsequently, the screw top cover 14 is installed onto the top of the first ball screw 16 and fixed to the top of the first fixed platform 2 with screws. The installation process of the second ball screw is the same as that of the first ball screw 16, and will not be described again here.

[0055] It should be noted that mounting doors are provided on the sides of both the first fixed platform 2 and the second fixed platform 3. The first servo motor 20 and the second servo motor are installed into the cavity of the corresponding fixed platform through the corresponding mounting doors, thereby fixing them to the integrated main frame structure 1.

[0056] The process of installing the first servo motor 20 into the cavity of the first fixed platform 2 is as follows: the motor gear 18 is installed at the top position of the first servo motor 20, then the first servo motor 20 is inserted into the first fixed platform 2 through the mounting door, and the top of the first servo motor 20 is fixed to the integrated main frame structure 1 using the motor mounting screws 19. The process of installing the second servo motor into the cavity of the second fixed platform 3 is the same as that of the first servo motor 20, and will not be described again here.

[0057] The installation process of the overload-resistant plug 11 and the steel ball 12 is as follows: Insert the steel ball 12 into the groove of the overload-resistant plug 11, using the viscosity of the lubricating oil to adhere the steel ball 12 to the groove, thus forming an overload-resistant assembly 10 with the overload-resistant plug 11 and the steel ball 12. Install the overload-resistant assembly 10 into the threaded holes at the bottom of the first fixed platform 2 and the second fixed rod platform, that is, into the corresponding threaded holes on the end faces of the first ball screw 16, the first motor rotor 21, the second ball screw, and the second motor rotor. When tightening, ensure that after the steel ball 12 of the overload-resistant assembly 10 contacts the end face of the corresponding ball screw or motor rotor, loosen it by 1 / 4 turn (one turn of thread is 0.7mm, and 1 / 4 turn ensures the distance from the end face to the steel ball 12 is 0.1-0.2mm). Then proceed with the installation of the other end of the overload-resistant assembly 10. When installing the overload protection assembly at the other end, threaded holes are provided on the first middle cover 5 and the second middle cover 6. The first middle cover 5 is fixed to the top surface of the first fixed platform 2 and the second middle cover 6 is fixed to the top surface of the second fixed platform 3 using screws. The overload protection assembly 10 is installed into the corresponding threaded hole. When tightening, after the steel ball 12 of the overload protection assembly 10 contacts the end face of the corresponding ball screw or motor rotor, loosen it by 1 / 4 turn (one thread turn is 0.7mm, and 1 / 4 turn ensures that the distance from the end face to the steel ball 12 is 0.1-0.2mm).

[0058] Compared with the prior art, the first motor rotor 21 and the second motor rotor of the present invention are equipped with anti-overload components 10 at their top and bottom ends, which can prevent them from escaping from one end when subjected to excessive impact, and ensure that they can still work normally when subjected to impacts from both the top and bottom directions.

[0059] The rudder system of the present invention with bidirectional high overload resistance also includes a first drive control box 7 and a second drive control box 8. The first drive control box 7 and the second drive control box 8 have the same structure and are symmetrically arranged about the rudder blade fixing axis 4.

[0060] Both the first drive control box 7 and the second drive control box 8 are equipped with drive modules and control modules. The top of the two drive control boxes is equipped with a potting port 9. Potting glue is poured into the corresponding drive control box through the potting port 9. After the potting glue cures, it can fix the drive module and control module, thereby improving the overload resistance of the circuit boards in the two drive boxes.

[0061] It should be noted that the first drive control box 7 is located on the top surface of the first middle cover 5, and the second drive control box 8 is located on the top surface of the second middle cover 6. Both the first drive control box 7 and the first middle cover 5 have multiple threaded holes at corresponding positions, and are connected by screws. Similarly, the second drive control box 8 and the second middle cover 6 also have multiple threaded holes at corresponding positions, and are connected by screws. In other words, the first drive box and the second drive control box 8 are fixed to the integrated main frame structure 1 via their respective middle covers.

[0062] Compared with the prior art, the present invention fixes the first drive control box 7 and the second drive control box 8 to the integrated main frame structure 1 with screws, making the structure of the rudder system more compact, reducing the size of the rudder system, and improving the integration of the rudder system.

[0063] It should be noted that, along the vertical direction of the integrated main frame structure 1, i.e. the direction of the rudder blade fixing axis 4, the shapes of the two drive control boxes are the same as the shapes of the two middle covers, and both are the same as the shapes of the first fixed platform 2 and the second fixed platform 3.

[0064] It should be noted that before potting the first drive control box 7 and the second drive control box 8, the two drive control boxes are first installed on the integrated main frame structure 1, and then potting is performed.

[0065] Compared with the prior art, the present invention, through the above-mentioned potting process, pours the glue from the potting port 9 into the two drive control boxes, and fixes the drive module and control module by the curing of the glue. When the rudder system is subjected to overload impact, it not only greatly reduces the risk of short circuit between the lines, but more importantly, it protects the electronic components, resists the impact, and ensures the normal operation of the rudder system.

[0066] The potting process includes: First, using anhydrous ethanol to clean all circuit boards, connectors, and potting covers inside the two drive control boxes, ensuring that there is no dirt, oil, dust, or excess material inside. Then, allow them to air dry for a certain period. Second, use masking tape to seal the installation gaps between the two drive control boxes to prevent the potting compound from seeping out. Finally, pour the prepared potting compound into the first drive control box 7 and the second drive control box 8. After potting, clean off any excess compound and material with alcohol swabs to prevent the compound from flowing onto the external interfaces of the servo controller; the exterior should be free of excess compound. Strictly controlling the potting conditions during the above process ensures the potting effect, thereby firmly fixing the drive module and control module within the corresponding first drive control box 7 and second drive control box 8.

[0067] The rudder system of the present invention with bidirectional high overload resistance also includes a rudder shaft 23; a rudder shaft mounting hole is provided at the bottom of the integrated main frame structure 1 along the horizontal direction, and the rudder shaft 23 is disposed in the rudder shaft mounting hole; the rudder shaft mounting hole is located at the bottom of the first fixed platform 2 and the second fixed platform 3.

[0068] Compared with the prior art, the present invention improves the integration of the rudder system by mounting the first fixed platform 2 and the second fixed platform 3 on the bottom of the rudder shaft 23. It should be noted that a first circumferential groove and a second circumferential groove are provided on the inner wall of the rudder shaft mounting hole, both of which are coaxially arranged with the rudder shaft mounting hole; a sliding bearing 26 is provided in the first circumferential groove, and a circumferential angular displacement sensor 24 is provided in the second circumferential groove. A key 25 is provided between the circumferential angular displacement sensor 24 and the rudder shaft 23, and the circumferential angular displacement sensor 24 is fixed to the integrated main frame structure 1 by angular displacement sensor mounting screws 28.

[0069] Compared with the prior art, the present invention, by setting a first circumferential groove, allows for the placement of a sliding bearing 26 within it. The sliding bearing 26, through the action of the key 25 between itself and the rudder shaft 23, can rotate synchronously with the rudder shaft 23. The sliding bearing 26 has a certain load-bearing capacity and can reduce the friction between the rudder shaft 23 and the rudder shaft mounting hole, thus reducing friction and damage to the rudder shaft during operation. Furthermore, the present invention uses a sliding bearing 26 as the load-bearing bearing, and the sliding bearing 26 is made of brass inlaid with graphite dots, which has the advantages of wear resistance and high load-bearing capacity.

[0070] It should also be emphasized that the present invention can improve the reliability of the rudder shaft under overload conditions by setting the circumferential angular displacement sensor 24 in the second groove. Specifically, the circumferential angular displacement sensor 24 of the present invention adopts a coaxial potentiometer, which has an overload resistance of more than 10,000g; by using a sliding bearing 26 and a coaxial potentiometer, the reliability of the rudder shaft under overload conditions is guaranteed.

[0071] A pin hole is provided at one end of the rudder shaft mounting hole on the integrated main frame structure, and a pin hole is also provided at the root of the rudder blade 22. A rotating shaft 27 is provided in the two pin holes, and the rudder blade 22 is rotatably connected to the integrated main frame structure 1 through the rotating shaft 27.

[0072] Compared with existing technologies, firstly, this invention features an overload-resistant design for the main frame: integrating the first and second transmission components onto a single main frame structure 1 improves the impact resistance of the rudder system, while also increasing its integration and reducing its footprint. Secondly, this invention incorporates an overload-resistant design for the rudder system's drive control box: by providing a potting port 9 on the top surface of the first drive control box 7 and the second drive control box 8 and filling it with adhesive, the drive module and control module of the rudder system are fixed in place. This not only significantly reduces the risk of short circuits between circuits but, more importantly, protects the electronic components, resists the impact of shocks, and ensures the normal operation of the rudder system. Third, the overload resistance design for the transmission structure: Overload resistance components 10 are installed at the top and bottom of both the first and second sets of transmission components, ensuring a distance of 0.1-0.2mm between the top and bottom of the two ball screws and the two motor rotors and the steel balls 12. This ensures that the two ball screws and the two motor rotors have a certain buffer space when subjected to impact, thereby reducing the impact of overload impact and mitigating the impact force under high overload conditions, protecting the normal operation of the transmission structure. Fourth, the high overload resistance design for the rudder shaft: This invention uses a sliding bearing 26 as the load-bearing bearing, which has the advantages of wear resistance and high load-bearing capacity; the circumferential angular displacement sensor 24 uses a coaxial potentiometer, which has an overload resistance of over 10,000g. This invention ensures the reliability of the rudder shaft under overload conditions.

[0073] It should also be emphasized that existing high overload rudder systems are relatively complex in structure and difficult to assemble, resulting in low production volume and long production times in mass production. The rudder system proposed in this invention has a simple structure, is easy to assemble, and can be mass-produced.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A rudder system with bidirectional high overload resistance, characterized in that, It includes a first set of transmission components and a second set of transmission components with identical structures, as well as an integrated main frame structure; A hollow cylindrical rudder fixing shaft is provided vertically at the center of the integrated main frame structure; a first fixing platform and a second fixing platform with the same structure and an internal cavity are provided around the rudder fixing shaft, and the first fixing platform and the second fixing platform are symmetrical about the rudder fixing shaft; the first set of transmission components is located in the cavity of the first fixing platform, and the second set of transmission components is located in the cavity of the second fixing platform. The first set of transmission components includes a first servo motor and a first ball screw; the second set of transmission components includes a second servo motor and a second ball screw. The top and bottom ends of the first group of transmission components and the second group of transmission components are respectively provided with anti-overload components; The overload protection component includes an overload protection plug and steel balls; The steel ball maintains a distance of 0.1-0.2 mm from both ends of the first and second ball screws; Both the first ball screw and the second ball screw are provided with screw nuts; both the first ball screw and the second ball screw are provided with screw bearings near their top and bottom ends. The first and second ball screws are each provided with a screw top cover near their top ends; the screw top cover is used to fix the top of the corresponding ball screw to the integrated frame structure.

2. The rudder system with bidirectional high overload resistance according to claim 1, characterized in that, The rudder system also includes a first middle cover and a second middle cover, the first middle cover being disposed on the top surface of the first fixed platform and the second middle cover being disposed on the top surface of the second fixed platform.

3. The rudder system with bidirectional high overload resistance according to claim 2, characterized in that, The first servo motor includes a first servo motor rotor; the second servo motor includes a second servo motor rotor.

4. The rudder system with bidirectional high overload resistance according to claim 3, characterized in that, The steel ball maintains a distance of 0.1-0.2 mm from both ends of the first servo motor rotor and the second servo motor rotor.

Images