A connection bridge variable aircraft

Abstract

This invention proposes a variable-bridge underwater vehicle, belonging to the field of underwater vehicles. It includes a main hull, side hulls, a connecting bridge, a drive assembly, and rudder blades. Two side hulls are symmetrically arranged on either side of the main hull. Two connecting bridges are respectively located between the two side hulls and the main hull. Each connecting bridge contains an equipment cavity, with one end of the equipment cavity facing the stern of the main hull connected to the outside. The drive assembly is located within the equipment cavity. The rudder blades are mounted on the connecting bridges and connected to the drive assembly. The rudder blades oscillate up and down via the drive assembly, and also oscillate left and right via the drive assembly's axis of rotation. This invention, by mounting rudder blades on the connecting bridges and rotating them via the drive assembly, adjusts the rudder blades' oscillation posture and oscillation angle range. This allows the vehicle to better achieve turning and snorkeling maneuvers underwater using the two rudder blades, improving the practicality and maneuverability of the trimaran hull design in the field of underwater vehicles.

Description

Technical Field

[0001] This invention relates to the field of underwater vehicle technology, and more particularly to an underwater vehicle with a variable connecting bridge. Background Technology

[0002] With the development of modern technology, the demand for shipboard deck area is increasing for ships from various countries. For monohull ships, this requirement inevitably increases the ship's volume, which usually means increasing the ship's width. This results in increased resistance and a decrease in speed performance.

[0003] In this context, the trimaran emerged. A trimaran is a ship composed of a main hull and two side hulls on either side, sharing a main deck and superstructure. The width of the two side hulls can even be as narrow as sheets. The main function of the side hulls is to improve the ship's stability and seakeeping. The two side hulls are connected to the main hull by a connecting bridge to form a single integrated structure. Therefore, the trimaran has a large amount of upper deck space, while also possessing high speed and excellent navigation stability.

[0004] With the development of unmanned equipment technology, the design concept of trimaran ships has been gradually applied to the field of unmanned vehicles, enabling underwater unmanned vehicles to have a larger upper deck space. However, when vehicles are navigating across waterways, especially when transitioning from surface to underwater navigation, the large width of the trimaran ship increases the difficulty of turning, ascending, descending, and snorkeling underwater, greatly limiting the widespread application of trimaran hull design in the field of unmanned vehicles. Summary of the Invention

[0005] In view of this, the present invention proposes a vehicle with a variable connecting bridge to solve the problem that the large width of trimaran ships makes it difficult for the vehicle to turn or ascend and descend underwater.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a vehicle with a variable connecting bridge, including a main hull, side hulls, connecting bridges, a drive assembly, and a rudder; two side hulls are symmetrically arranged on both sides of the main hull; two connecting bridges are respectively arranged between the two side hulls and the main hull, and an equipment cavity is provided in the connecting bridge, with one end of the equipment cavity facing the stern of the main hull communicating with the outside; the drive assembly is arranged in the equipment cavity; the rudder is arranged on the connecting bridge and connected to the drive assembly, and the rudder swings up and down through the drive assembly, and swings left and right after the rudder rotates 90° through the drive assembly shaft.

[0007] Based on the above technical solutions, preferably, the drive assembly includes a main shaft and a swing block; the main shaft is axially arranged inside the equipment cavity along the equipment cavity, and the main shaft rotates 90° relative to the equipment cavity, with the end of the main shaft facing the stern of the main hull extending outside the equipment cavity; the swing block is arranged on the end of the main shaft facing the stern of the main hull, and the swing block is hinged to the end of the main shaft, and the swing block rotates around the hinged connection relative to the main shaft, with a rudder blade arranged on the swing block and driving the rudder blade to rotate synchronously.

[0008] More preferably, the drive assembly further includes a rotating cylinder, a sleeve, a first sliding cylinder, a second sliding cylinder, a first connecting rod, and a second connecting rod; the rotating cylinder is sleeved on the main shaft and rotates axially relative to the main shaft; both sleeves are sleeved on the main shaft and are respectively located at the axial ends of the rotating cylinder, rotating synchronously with the rotating cylinder, with the inner diameter of the sleeves being larger than the outer diameter of the main shaft; both the first and second sliding cylinders are sleeved on the main shaft and are respectively located at the axial ends of the rotating cylinder, with their two opposite ends respectively sleeved inside the two sleeves, and the first and second sliding cylinders are screwed to the two sleeves respectively, sliding opposite to each other or towards each other relative to the main shaft along the axial direction of the main shaft; the first connecting rod and the second connecting rod are respectively located on both sides of the swing block, with the two ends of the first connecting rod hinged to the side of the swing block and the side of the first sliding cylinder away from the sleeve, and the two ends of the second connecting rod hinged to the other side of the swing block and the side of the second sliding cylinder away from the sleeve.

[0009] More preferably, it also includes a first gear, a second gear, and a first drive mechanism; the first gear is sleeved on the rotating drum and rotates synchronously with the rotating drum; the second gear cooperates with the first gear; the first drive mechanism is disposed in the equipment cavity and is connected to the second gear, and the first drive mechanism drives the second gear to reciprocate axially.

[0010] More preferably, the drive assembly also includes springs, with two springs respectively sleeved on the first slide and the second slide. One end of the spring is connected to the end of the sleeve away from the rotating cylinder, and the other end of the spring is connected to the end of the first slide or the second slide away from the sleeve. When the rudder blade is straightened, the spring is in a relaxed state.

[0011] More preferably, the main shaft has an annular groove around its axial direction in the middle, and the rotating cylinder is rotatably connected to the annular groove; the main shaft also has two sliding grooves along its axial direction, the two sliding grooves are respectively located on both sides of the annular groove, and the first sliding cylinder and the second sliding cylinder are slidably connected through the sliding grooves.

[0012] More preferably, the drive assembly further includes a first support ring, at least one first support ring being sleeved on the sleeve, and a support rod being arranged around the outer peripheral wall of the first support ring, with both ends of the support rod being connected to the outer peripheral wall of the first support ring and the inner wall of the equipment cavity, respectively; the sleeve rotates axially relative to the first support ring.

[0013] More preferably, the threads on the outer circumferential surfaces of the first slide and the second slide are in opposite directions.

[0014] More preferably, the drive assembly further includes a second support ring and a rotating block; the second support ring is sleeved on the end of the main shaft away from the rudder blade, and a support rod is also arranged around the outer peripheral wall of the second support ring. The two ends of the support rod are respectively connected to the outer peripheral wall of the second support ring and the inner wall of the equipment cavity. An arc groove is formed on the outer peripheral wall of the second support ring around the main shaft in the axial direction, and the center angle of the arc groove is 90°; the rotating block is arranged on the end of the main shaft away from the rudder blade, and the rotating block is sleeved in the second support ring. The rotating block rotates synchronously with the main shaft relative to the second support ring. A sliding pin is provided on the outer peripheral wall of the rotating block. The two ends of the sliding pin extend radially along the main shaft, and the end of the sliding pin away from the rotating block extends outward through the arc groove.

[0015] More preferably, it also includes a third gear, a fourth gear, and a second drive mechanism; the third gear is sleeved on the second support ring, and the third gear is connected to the end of the sliding pin that passes through the arc groove, and the third gear rotates axially relative to the second support ring; the fourth gear cooperates with the third gear; the second drive mechanism is disposed in the equipment cavity, and the second drive mechanism is connected to the fourth gear, and the second drive mechanism drives the fourth gear to rotate axially clockwise or counterclockwise.

[0016] The variable-bridge aircraft of the present invention has the following advantages over the prior art: (1) The present invention sets a rudder on the connecting bridge and rotates the rudder by the drive component to adjust the swing posture and swing angle range of the rudder, so that the vehicle can better achieve turning and snorkeling actions through the two rudders when sailing underwater, thereby improving the practicality and control stability of the trimaran hull design in the field of aircraft.

[0017] (2) The present invention uses a rotating cylinder to drive the sleeve to cooperate with two sliding cylinders. The rotation of the rotating cylinder converts the rotational driving force into a linear force for the sliding cylinder to slide back and forth. The swing is achieved by pushing and pulling the swing block through two connecting rods of different lengths. The entire driving structure is small in size and highly operable.

[0018] (3) The present invention limits the movement range of the sliding pin by the arc groove on the support ring, thereby limiting the rotation range of the rotating block with the sliding pin, so that the main shaft can rotate within 90° under the action of the drive mechanism. Through the above structure, the rudder blade can accurately adjust the swing posture of the rudder blade according to the needs of turning or snorkeling. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view of the aircraft of the present invention; Figure 2 This is a side view of the aircraft of the present invention; Figure 3 This is an exploded perspective view of the driving component of the present invention; Figure 4 This is a perspective view of the driving component of the present invention; Figure 5 This is a top view of the drive component of the present invention; Figure 6 This is a top sectional view of the drive component of the present invention; Figure 7 This is a top sectional view of another state of the drive component of the present invention.

[0021] In the diagram: 1. Main hull; 2. Side hull; 3. Connecting bridge; 4. Drive assembly; 41. Main shaft; 42. Swing block; 43. Rotary cylinder; 44. Sleeve; 45. First slide cylinder; 46. Second slide cylinder; 47. First connecting rod; 48. Second connecting rod; 49. Spring; 491. First support ring; 492. Support rod; 493. Second support ring; 494. Swing block; 495. Sliding pin; 401. Ring groove; 402. Slide groove; 403. Arc groove; 5. Rudder blade; 6. First gear; 61. Second gear; 7. First drive mechanism; 8. Third gear; 81. Fourth gear; 9. Second drive mechanism. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0028] like Figure 1 As shown, combined with Figure 2The present invention provides a variable-bridge navigable vehicle, comprising a main hull 1, side hulls 2, a connecting bridge 3, a drive assembly 4, and a rudder 5.

[0029] The main hull 1 can theoretically be used for either manned or unmanned vessels. However, in practice, due to safety and equipment maneuverability considerations, this design is primarily used for unmanned vehicles. Therefore, the main hull 1 can be a conventional hull structure with a pointed bow and wide stern, a long ellipsoidal structure similar to that of a submarine, a cuboid, or other irregularly shaped structures that do not affect navigation.

[0030] The side hulls 2 and connecting bridges 3 are generally located in the middle or slightly aft of the main hull 1. The two side hulls 2 are symmetrically arranged on both sides of the main hull 1; the two connecting bridges 3 are respectively located between the two side hulls 2 and the main hull 1, and the connecting bridges 3 are equipped with equipment cavities 31. The end of the equipment cavity 31 facing the stern of the main hull 1 is connected to the outside.

[0031] The drive assembly 4 is located inside the equipment cavity 31. To prevent ambient water from entering the equipment cavity 31 and causing damage to the equipment inside, a rotatable or movable sealing cover can be installed at the opening end of the equipment cavity 31. The sealing cover can be fitted onto the connection between the drive assembly 4 and the rudder blade 5, forming a waterproof seal for the equipment cavity 31 within the range of motion of the rudder blade 5.

[0032] The rudder blade 5 is mounted on the connecting bridge 3 and connected to the drive assembly 4. The rudder blade 5 swings up and down via the drive assembly 4, and swings left and right after rotating 90° via the drive assembly 4 shaft. The cross-section of the connecting bridge 3 is usually streamlined or teardrop-shaped to reduce the navigation resistance of the aircraft. When the rudder blade 5 is not swinging, it can be regarded as part of the connecting bridge 3. Therefore, in practice, a notch is made at the tail end of the connecting bridge 3, and the outer contour shape of the rudder blade 5 matches the notch and is installed in the notch. The rudder blade 5 is plate-shaped or sheet-shaped, and its overall shape is also streamlined or teardrop-shaped, with its tail thickness gradually decreasing to a sharp point.

[0033] When the vehicle of this embodiment is navigating in a water environment, the rudder blade 5 remains in a straight position and forms an integral structure with the connecting bridge 3. At this time, the rudder blade 5 will not affect the normal navigation of the vehicle regardless of its swing posture or swing angle. When the vehicle enters an underwater environment, the vehicle travels in a straight line, and the rudder blade 5 still remains in a horizontal and straight position. When the vehicle begins to float and ascend, the rudder blade 5 swings up and down under the drive component 4, thereby guiding the vehicle to rise or descend. When the vehicle begins to turn, the rudder blade 5 first rotates 90° axially under the drive component 4, at which point the rudder blade 5 adjusts from a horizontal to a vertical position. Then, under the drive component 4, the rudder blade 5 swings left and right, thereby guiding the vehicle to turn left or right.

[0034] exist Figure 3 In one embodiment shown, the drive assembly 4 includes a main shaft 41 and a swing block 42.

[0035] The main shaft 41 is axially arranged inside the equipment cavity 31, and rotates 90° relative to the equipment cavity 31. The end of the main shaft 41 extending towards the stern of the main hull 1 extends outside the equipment cavity 31. A sealing cover can be fitted onto the stern end of the main shaft 41, so that the hinge connection between the main shaft 41 and the swing block 42 is exposed outside the sealing cover. This not only does not affect the swing range of the rudder blade 5, but also prevents ambient water from entering the equipment cavity 31.

[0036] The oscillating block 42 is mounted on the end of the main shaft 41 facing the stern of the main hull 1. The oscillating block 42 is hinged to the end of the main shaft 41. Specifically, a hinge joint is provided on the oscillating block, and a hinge seat is provided on the end of the main shaft 41. The hinge joint and the hinge seat are hinged together by a pivot pin, allowing the oscillating block 42 to rotate relative to the main shaft 41 around the hinged connection. A rudder blade 5 is mounted on the oscillating block 42 and drives the rudder blade 5 to rotate synchronously. The oscillating block 42 and the rudder blade 5 can be firmly connected by welding or fastening bolts or other fasteners.

[0037] In this embodiment, the oscillation posture of the rudder blade 5 is adjusted by rotating the main shaft 41, thereby switching the rudder blade 5 between a horizontal and a vertical posture. When the rudder blade 5 is in a horizontal posture, it can oscillate up and down, and when the rudder blade 5 is in a vertical posture, it can oscillate left and right. To achieve the oscillation action of the rudder blade 5, telescopic rods can be provided on both sides of the swing block 42. The main body of the telescopic rods is located inside the equipment cavity 31, and the telescopic ends of the two telescopic rods are symmetrically connected to both sides of the swing block 42. The extension and retraction of the telescopic rods drives the swing block 42 to drive the rudder blade 5 to oscillate.

[0038] exist Figure 4 In one embodiment shown, theoretically, driving the pendulum block 42 to swing using two telescopic rods is a more easily implemented method. However, since the drive assembly 4 in this embodiment needs to be installed inside the equipment cavity 31 within the relatively thin connecting bridge 3, and the internal space of the equipment cavity 31 is narrow, setting a telescopic rod mechanism inside it would occupy a large amount of internal space. At the same time, the main shaft 41 also needs to rotate to change the posture of the rudder blade 5. Therefore, in this case, there is the problem that "the position change of the telescopic rod after rotating with the main shaft 41 will lead to the equipment cavity 31 requiring a large internal space," and there is also the problem that "the design of the structure for the telescopic rod to rotate with the main shaft 41 is more difficult." This embodiment adopts another implementation idea, in which the drive assembly 4 also includes a rotating cylinder 43, a sleeve 44, a first sliding cylinder 45, a second sliding cylinder 46, a first connecting rod 47, and a second connecting rod 48.

[0039] The rotating cylinder 43 is sleeved on the main shaft 41 and rotates axially relative to the main shaft 41. Two sleeves 44 are also sleeved on the main shaft 41, located at opposite axial ends of the rotating cylinder 43. The sleeves 44 rotate synchronously with the rotating cylinder 43, and their inner diameters are larger than the outer diameter of the main shaft 41. A first sliding cylinder 45 and a second sliding cylinder 46 are also sleeved on the main shaft 41, located at opposite axial ends of the rotating cylinder 43. The two opposite ends of the first sliding cylinder 45 and the second sliding cylinder 46 are respectively fitted inside the two sleeves 44. The first sliding cylinder 45 and the second sliding cylinder 46 are screwed to the two sleeves 44. The two sliding cylinders 46 slide in opposite directions or towards each other relative to the main shaft 41 along the axial direction of the main shaft 41. The first connecting rod 47 and the second connecting rod 48 are respectively arranged on both sides of the swing block 42. The two ends of the first connecting rod 47 are respectively hinged to the side of the swing block 42 and the side of the first sliding cylinder 45 away from the sleeve 44. The two ends of the second connecting rod 48 are respectively hinged to the other side of the swing block 42 and the side of the second sliding cylinder 46 away from the sleeve 44. In actual operation, L-shaped arms extending radially are set on both sides of the swing block 42 and the side of the sliding cylinder. The two ends of the connecting rod are respectively hinged to the ends of the two arms, so that the connecting rod has a large range of motion during the pushing and pulling of the swing block 42.

[0040] When the above technical solution is adopted, when the rotating drum 43 rotates under the action of external driving force, it will drive the two sleeves 44 to rotate synchronously. Since the two slides and the sleeves 44 are screwed together and slidably connected to the main shaft 41, the rotation of the sleeves 44 will convert the rotational driving force into a linear force that drives the two slides to slide back and forth. When the two slides move in opposite directions under this drive, the first connecting rod 47 pulls one side of the swing block 42 and the second connecting rod 48 pushes the other side of the swing block 42, so that the swing block 42 swings towards the side of the first connecting rod 47. When the rotating drum 43 rotates in the opposite direction, the two slides move towards each other under this drive. At this time, the first connecting rod 47 pushes one side of the swing block 42 and the second connecting rod 48 pulls the other side of the swing block 42, so that the swing block 42 swings towards the side of the second connecting rod 48. As the rotating drum 43 reciprocates, the swing block 42 also reciprocates.

[0041] In the transmission structure design of this embodiment, all transmission components are concentrated on the main shaft 41, which increases the volume of the entire drive assembly 4 in its radial width. Therefore, the space occupied by the drive assembly 4 in the equipment cavity 31 can be greatly reduced. At the same time, the main shaft 41 can rotate 90° to drive most of the transmission components to rotate and adjust the posture of the drive assembly 4. This will not affect the control effectiveness of the drive assembly 4, and the structure is also very easy to implement.

[0042] exist Figure 5In one embodiment shown, the device further includes a first gear 6, a second gear 61, and a first drive mechanism 7. The first gear 6 is mounted on the rotating drum 43 and rotates synchronously with the drum 43. The second gear 61 engages with the first gear 6. The first drive mechanism 7 is disposed within the equipment cavity 31 and can be a rotary motor. The first drive mechanism 7 is connected to the second gear 61, driving the second gear 61 to reciprocate axially. Using this technical solution, the first drive mechanism 7 drives the second gear 61 to rotate, thereby driving the rotating drum 43 to reciprocate synchronously.

[0043] exist Figure 6 In one embodiment shown, the drive assembly 4 further includes two springs 49, which are respectively sleeved on the first slide 45 and the second slide 46. One end of the spring 49 is connected to the end of the sleeve 44 away from the rotating cylinder 43, and the other end of the spring 49 is connected to the end of the first slide 45 or the second slide 46 away from the sleeve 44. The function of the springs 49 is to buffer the sliding of the two slides, making the rudder blade 5 swing more gently, so as to avoid damage to the rudder blade 5 in the underwater environment due to excessive swinging. When the rudder blade 5 is straight, the spring 49 is in a relaxed state; when the two slides move towards each other, the spring 49 is elastically compressed; and when the two slides move away from each other, the spring 49 is elastically stretched.

[0044] exist Figure 7 In one embodiment shown, a ring groove 401 is formed around the center of the main shaft 41 along its axial direction. The rotating cylinder 43 is rotatably connected to the ring groove 401. Specifically, a ring-shaped or multi-segment arc-shaped locking block is provided on the inner wall of the rotating cylinder 43, and the locking block is rotatably engaged with the ring groove 401. Therefore, when the rotating cylinder 43 rotates relative to the main shaft 41, the rotating cylinder 43 will not slide back and forth on the main shaft 41. Two sliding grooves 402 are also formed along the axial direction of the main shaft 41. The two sliding grooves 402 are respectively provided on both sides of the ring groove 401. The first sliding cylinder 45 and the second sliding cylinder 46 are slidably connected through the sliding grooves 402. Specifically, a strip-shaped or block-shaped slider is provided on the inner wall of the sliding cylinder, and the slider is slidably engaged with the sliding groove 402. Therefore, when the two sliding cylinders slide back and forth relative to the main shaft 41 under the drive of the sleeve 44, the sliding cylinders will not rotate with the sleeve 44 on the main shaft 41.

[0045] exist Figure 4In one embodiment shown, the drive assembly 4 further includes a first support ring 491. At least one first support ring 491 is sleeved on the sleeve 44. A support rod 492 is arranged around the outer peripheral wall of the first support ring 491, and the two ends of the support rod 492 are respectively connected to the outer peripheral wall of the first support ring 491 and the inner wall of the equipment cavity 31. The sleeve 44 rotates axially relative to the first support ring 491. To prevent the sleeve 44 from sliding back and forth within the first support ring 491, the connection between the first support ring 491 and the sleeve 44 can adopt the same connection method as that between the rotating cylinder 43 and the main shaft 41, that is, an annular groove is opened on the outer peripheral wall of the sleeve 44, and an annular protrusion is provided on the inner wall of the first support ring 491. The annular protrusion locks the annular groove, allowing the sleeve 44 to rotate relative to the first support ring 491. The first support ring 491 serves to limit and fix the position of the drive assembly 4 within the equipment cavity 31. Typically, first support rings 491 are provided on both sleeves 44 to stabilize the rotation or sliding of the main shaft 41 and its transmission components.

[0046] exist Figure 5 In one embodiment shown, the threads on the outer circumferential surfaces of the first slide cylinder 45 and the second slide cylinder 46 are in opposite directions. In practice, threaded grooves are formed on the outer circumferential surfaces of the first slide cylinder 45 and the second slide cylinder 46. A movable block is provided on the inner wall of the sleeve 44, and the movable block is locked in the threaded groove. When the sleeve 44 rotates, the movable block moves along the threaded groove, causing the two slide cylinders to slide back and forth on the main shaft 41. Since the moving directions of the first slide cylinder 45 and the second slide cylinder 46 are always opposite, the helical directions of the threaded grooves on their outer circumferential walls also need to be set in opposite directions.

[0047] exist Figure 6 In one embodiment shown, the drive assembly 4 further includes a second support ring 493 and a rotating block 494. The second support ring 493 is sleeved on the end of the main shaft 41 away from the rudder blade 5. A support rod 492 is also arranged around the outer peripheral wall of the second support ring 493. The two ends of the support rod 492 are respectively connected to the outer peripheral wall of the second support ring 493 and the inner wall of the equipment cavity 31. The second support ring 493 also serves to limit and fix the position of the drive assembly 4 in the equipment cavity 31. At the same time, the second support ring 493 is located at the inner end of the main shaft 41, which ensures the rotational stability of the main shaft 41 and prevents the main shaft 41 from leaving the equipment cavity 31.

[0048] An arc groove 403 is axially formed on the outer peripheral wall of the second support ring 493 around the main shaft 41, with a central angle of 90°. A rotating block 494 is disposed on the end of the main shaft 41 away from the rudder blade 5. The rotating block 494 is fitted inside the second support ring 493 and rotates synchronously with the main shaft 41 relative to the second support ring 493. A sliding pin 495 is provided on the outer peripheral wall of the rotating block 494. Both ends of the sliding pin 495 extend radially along the main shaft 41, and the end of the sliding pin 495 away from the rotating block 494 extends outward through the arc groove 403. When the rudder blade 5 is straightened and in a horizontal position, the sliding pin 495 is located at one end of the arc groove 403. When the rudder blade 5 is adjusted to a vertical position, the sliding pin 495 moves along the arc groove 403 to its other end. At this time, the sliding pin 495 will drive the entire drive assembly 4 to rotate axially by 90°, thereby changing the attitude of the rudder blade 5.

[0049] exist Figure 5 In one embodiment shown, the device further includes a third gear 8, a fourth gear 81, and a second drive mechanism 9. The third gear 8 is sleeved on the second support ring 493 and is connected to the end of the sliding pin 495 passing through the arc groove 403. The third gear 8 rotates axially relative to the second support ring 493. The fourth gear 81 engages with the third gear 8. The second drive mechanism 9 is disposed within the device cavity 31 and can be a rotary motor. The second drive mechanism 9 is connected to the fourth gear 81 and drives the fourth gear 81 to rotate axially clockwise or counterclockwise. When the above technical solution is adopted, the second drive mechanism 9 drives the fourth gear 81 to rotate, thereby driving the rotating block 494 to rotate synchronously, realizing the attitude change of the main shaft 41 within a 90° range.

[0050] The working principle of this invention is: When the vehicle is sailing on water, the rudder blade 5 is in a horizontal position and remains upright.

[0051] When the vehicle enters underwater navigation and needs to surface, the first drive mechanism 7 drives the second gear 61 to rotate the first gear 6. The first gear 6 causes the rotating cylinder 43 to rotate on the main shaft 41. The rotating cylinder 43 drives the two sleeves 44 at both ends to rotate, causing the first slide cylinder 45 and the second slide cylinder 46 to move in opposite directions. The movement of the first slide cylinder 45 away from the rudder blade 5 will cause the first connecting rod 47 to pull one side of the swing block 42. The movement of the second slide cylinder 46 towards the rudder blade 5 will cause the second connecting rod 48 to push the other side of the swing block 42, thereby causing the rudder blade 5 to swing towards the side of the first connecting rod 47. The rudder blade 5 swings upward, guiding the vehicle to surface. When the vehicle enters underwater navigation and needs to dive, the second drive mechanism 7 rotates in the opposite direction and causes the rudder blade 5 to swing downward, guiding the vehicle to dive.

[0052] When the vehicle enters underwater navigation and needs to make a turn, the second drive mechanism 9 drives the fourth gear 81 to rotate the third gear 8. The third gear 8 drives the rotating block 494 and the main shaft 41 to rotate synchronously. Due to the limitation of the arc groove 403, the rotating block 494 and the main shaft 41 can only rotate 90°, thereby causing the rudder 5 to rotate and switch to a vertical position. Then, the above transmission process is repeated to make the rudder 5 swing to the left or right, thereby guiding the vehicle to turn left or right.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle with a variable connecting bridge, characterized in that: It includes the main hull (1), side hulls (2), connecting bridge (3), drive assembly (4) and rudder (5); The two side hulls (2) are symmetrically arranged on both sides of the main hull (1); The two connecting bridges (3) are respectively set between the two side hulls (2) and the main hull (1). The connecting bridge (3) is provided with an equipment cavity (31). The end of the equipment cavity (31) facing the stern of the main hull (1) is connected to the outside. The drive assembly (4) is disposed inside the device cavity (31); The rudder (5) is mounted on the connecting bridge (3) and connected to the drive assembly (4). The rudder (5) swings up and down through the drive assembly (4), and the rudder (5) swings left and right after the drive assembly (4) rotates 90°.

2. The aircraft with a variable connecting bridge according to claim 1, characterized in that: The drive assembly (4) includes a main shaft (41) and a swing block (42). The main shaft (41) is axially arranged in the equipment cavity (31) and rotates 90° relative to the equipment cavity (31). The end of the main shaft (41) extending toward the stern of the main hull (1) extends out of the equipment cavity (31). The swing block (42) is located at the end of the main shaft (41) facing the stern of the main hull (1). The swing block (42) is hinged to the end of the main shaft (41). The swing block (42) rotates relative to the main shaft (41) around the hinged connection. The swing block (42) is equipped with a rudder blade (5) and drives the rudder blade (5) to rotate synchronously.

3. A vehicle with a variable connecting bridge according to claim 2, characterized in that: The drive assembly (4) also includes a rotating cylinder (43), a sleeve (44), a first slide cylinder (45), a second slide cylinder (46), a first connecting rod (47), and a second connecting rod (48). The rotating drum (43) is sleeved on the main shaft (41), and the rotating drum (43) rotates axially relative to the main shaft (41); Both sleeves (44) are sleeved on the main shaft (41). The two sleeves (44) are respectively set at both ends of the axial direction of the rotating cylinder (43). The two sleeves (44) rotate synchronously with the rotating cylinder (43). The inner diameter of the sleeves (44) is larger than the outer diameter of the main shaft (41). The first slide cylinder (45) and the second slide cylinder (46) are both sleeved on the main shaft (41). The first slide cylinder (45) and the second slide cylinder (46) are respectively located at the two axial ends of the rotating cylinder (43). The two opposite ends of the first slide cylinder (45) and the second slide cylinder (46) are respectively sleeved in two sleeves (44). The first slide cylinder (45) and the second slide cylinder (46) are respectively screwed to the two sleeves (44). The first slide cylinder (45) and the second slide cylinder (46) slide in opposite directions or in opposite directions relative to the main shaft (41) along the axial direction of the main shaft (41). The first connecting rod (47) and the second connecting rod (48) are respectively disposed on both sides of the swing block (42). The two ends of the first connecting rod (47) are respectively hinged to the side of the swing block (42) and the side of the first slide cylinder (45) away from the sleeve (44). The two ends of the second connecting rod (48) are respectively hinged to the other side of the swing block (42) and the side of the second slide cylinder (46) away from the sleeve (44).

4. A variable-bridge aircraft according to claim 3, characterized in that: It also includes a first gear (6), a second gear (61), and a first drive mechanism (7); The first gear (6) is sleeved on the rotating drum (43), and the first gear (6) rotates synchronously with the rotating drum (43); The second gear (61) meshes with the first gear (6); The first drive mechanism (7) is located inside the equipment cavity (31). The first drive mechanism (7) is connected to the second gear (61). The first drive mechanism (7) drives the second gear (61) to reciprocate axially.

5. A vehicle with a variable connecting bridge according to claim 3, characterized in that: The drive assembly (4) also includes springs (49), two springs (49) are respectively sleeved on the first slide (45) and the second slide (46), one end of the spring (49) is connected to the end of the sleeve (44) away from the rotating cylinder (43), and the other end of the spring (49) is connected to the end of the first slide (45) or the second slide (46) away from the sleeve (44); when the rudder (5) is straightened, the spring (49) is in a relaxed state.

6. A vehicle with a variable connecting bridge according to claim 3, characterized in that: The main shaft (41) has an annular groove (401) around its axial direction in the middle, and the rotating drum (43) is rotatably connected to the annular groove (401); The main shaft (41) also has two slide grooves (402) along its axial direction. The two slide grooves (402) are respectively arranged on both sides of the annular groove (401). The first slide cylinder (45) and the second slide cylinder (46) are slidably connected through the slide grooves (402).

7. A variable-bridge aircraft according to claim 3, characterized in that: The drive assembly (4) further includes a first support ring (491), at least one of the first support rings (491) is sleeved on the sleeve (44), and a support rod (492) is arranged around the outer peripheral wall of the first support ring (491). The two ends of the support rod (492) are respectively connected to the outer peripheral wall of the first support ring (491) and the inner wall of the equipment cavity (31); the sleeve (44) rotates axially relative to the first support ring (491).

8. A vehicle with a variable connecting bridge according to claim 3, characterized in that: The threads on the outer circumferential surfaces of the first slide (45) and the second slide (46) are opposite in direction.

9. A vehicle with a variable connecting bridge according to claim 2, characterized in that: The drive assembly (4) also includes a second support ring (493) and a rotating block (494). The second support ring (493) is sleeved on the end of the main shaft (41) away from the rudder blade (5). A support rod (492) is also arranged around the outer peripheral wall of the second support ring (493). The two ends of the support rod (492) are respectively connected to the outer peripheral wall of the second support ring (493) and the inner wall of the equipment cavity (31). An arc groove (403) is opened around the main shaft (41) axially on the outer peripheral wall of the second support ring (493). The center angle of the arc groove (403) is 90°. The rotating block (494) is located on the end of the main shaft (41) away from the rudder blade (5). The rotating block (494) is sleeved inside the second support ring (493). The rotating block (494) rotates synchronously with the main shaft (41) relative to the second support ring (493). A sliding pin (495) is provided on the outer peripheral wall of the rotating block (494). Both ends of the sliding pin (495) extend radially along the main shaft (41). The end of the sliding pin (495) away from the rotating block (494) extends outward through the arc groove (403).

10. A vehicle with a variable connecting bridge according to claim 9, characterized in that: It also includes a third gear (8), a fourth gear (81) and a second drive mechanism (9); The third gear (8) is sleeved on the second support ring (493), and the third gear (8) is connected to the end of the sliding pin (495) passing through the arc groove (403). The third gear (8) rotates axially relative to the second support ring (493). The fourth gear (81) is engaged with the third gear (8); The second drive mechanism (9) is located inside the equipment cavity (31). The second drive mechanism (9) is connected to the fourth gear (81). The second drive mechanism (9) drives the fourth gear (81) to rotate clockwise or counterclockwise axially.

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