Foldable three-body unmanned ship and using method

Abstract

The invention provides a foldable three-body unmanned ship and a using method, the foldable three-body unmanned ship comprises a middle floating body and side floating bodies respectively installed on the left side and the right side of the middle floating body, the distance between the middle floating body and the side floating bodies can be flexibly adjusted, and the transverse size of the foldable three-body unmanned ship can be adjusted; each side floating body comprises a floating body main body and a floating body end part, and the floating body end parts can be turned to the top surface of the floating body main body through adjustment and maintain a folded state through locking, so that the longitudinal size adjustment of the foldable three-body unmanned ship is realized. When the foldable three-body unmanned ship is carried, transported and transferred, the transverse size of the three-body unmanned ship is shortened by adjusting the distance between the middle floating body and the left and right side floating bodies, and then the longitudinal size of the three-body unmanned ship is shortened by folding the floating body main body and the floating body end parts, so that the overall structure is more compact, the occupied space is reduced, and the space is saved. Carrying and transportation transfer are facilitated; after the foldable three-body unmanned ship arrives at a working place, the distance between the middle floating body and the side floating bodies is adjusted to a proper position, the floating body main body and the floating body end parts are unfolded, and the foldable three-body unmanned ship can normally work.

Description

Technical Field

[0001] This invention relates to the field of unmanned vessels, and more specifically, to a foldable trimaran unmanned vessel and its method of use. Background Technology

[0002] In hydrological surveying operations, unmanned surface vessels (USVs) are the most commonly used surveying vehicles, capable of carrying various surveying instruments. Current USVs come in various structural forms, among which the trimaran structure is a relatively common floating platform structure. Compared with monohull vessels, the most prominent advantage of this type of vessel is its good stability. However, it also has some obvious drawbacks: it cannot be folded and stored, occupies a large space, and is inconvenient for handling and transportation, affecting its practical use and requiring improvement. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a foldable trimaran unmanned vessel and a method of use, which can be folded and deformed for easy handling and transportation; it can be adjusted and unfolded on the work site, and the adjustment operation is simple and easy to use.

[0004] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a foldable trimaran unmanned surface vessel, including a central float and two side floats; the two side floats are installed and connected to both sides of the central float, and can be adjusted to achieve the actions of spreading out and folding together; the side floats include a float body and a float end, and the float end can be adjusted to flip up to the top surface of the float body and maintain the folded state by locking.

[0005] In a preferred embodiment of the present invention, the main body of the float and the end of the float are rotatably connected by a hinge located at the top of the docking point; the main body of the float has a first cavity inside, and a locking mechanism is provided in the first cavity, which is used to lock the end of the float after it is unfolded or folded.

[0006] In a preferred embodiment of the present invention, the locking mechanism includes a pusher, a first spring, and an unlocking component. At least one first through hole is provided on the wall surface of the first cavity near the end of the float, and a corresponding first insertion hole is provided on the wall surface of the end of the float near the main body of the float. The diameter of the first insertion hole matches the diameter of the first through hole. The pusher is disposed within the first cavity and has a first insertion rod that movably passes through the first through hole. The first spring provides an outward pushing force to the pusher, keeping the first insertion rod extended. A first hook is fixedly provided at the top of the end of the pusher away from the first insertion rod. A second hook is installed on the top surface of the end of the float away from the main body of the float, and the second hook engages with the first hook to lock the end of the float when it is folded into place. Adjusting the unlocking component can move the pusher in a direction that overcomes the force of the first spring, causing the first insertion rod to disengage from the first insertion hole and unlocking the float; it can also disengage the first hook from the second hook and unlock the float.

[0007] In a preferred embodiment of the present invention, the pusher includes a push plate, on one wall of which three first insert rods are fixedly arranged, the three first insert rods being distributed in an inverted isosceles triangle shape; the number of first through holes is the same as the number of first insert rods, and their positions correspond; on the wall of the push plate away from the first insert rods, an outwardly extending first frame plate and a second frame plate are fixedly arranged, the first frame plate and the second frame plate being parallel, and a support shaft is installed between the middle of the first frame plate and the second frame plate; a first hook is fixedly arranged at the top of the end of the first frame plate away from the push plate; a concave cavity is provided on the side wall of the float body, and the concave cavity is connected to the first cavity through a first strip-shaped opening; the unlocking component includes a push rod and a push block, the push rod being movably inserted through the first strip-shaped opening, one end of the push rod being rotatably installed on the inner wall of the concave cavity, the push rod passing between the first frame plate and the second frame plate, and located on one side of the support shaft; the push block is slidably arranged in the concave cavity, and the push block is used to push the free end of the push rod, thereby applying force to the support shaft, causing the pusher to move in a direction that overcomes the spring force of the first spring.

[0008] In a preferred embodiment of the present invention, the upper wall of the cavity is provided with a second strip-shaped opening that communicates with the first cavity, and the second strip-shaped opening is parallel to the first frame plate; a guide bolt is installed on the push block, and the guide bolt slides along the second strip-shaped opening; the shape of the push block is adapted to the cross-sectional shape of the cavity, and a baffle is fixedly provided on the side of the push block away from the first strip-shaped opening, the baffle slides close to the outer wall of the float body, and the baffle is provided with a groove corresponding to the position of the push block; the baffle is in a state of sealing the opening of the cavity before and after movement.

[0009] In a preferred embodiment of the present invention, a bushing is rotatably sleeved on the outer side of the support shaft, and the push rod is slidably engaged with the bushing; a roller is rotatably mounted at the free end of the push rod, and the roller is slidably engaged with the push block.

[0010] In a preferred embodiment of the present invention, the main body of the float is provided with a first through hole and a second through hole penetrating opposite sides, and a first sink hole is provided at the end of the first through hole away from the middle float; a first sink groove is provided on the side wall of the end of the float, the first sink groove has a circular structure, and a first threaded post is fixed in the first sink groove; a first support rod and a second support rod are fixedly installed on the two side walls of the middle float, and a third support rod is rotatably installed, the third support rod being locked by a locking structure; the first support rod and the second support rod are respectively provided corresponding to the first through hole and the second through hole, and the third support rod extending outward corresponds to the position of the first threaded post; the first support rod and the second support rod have the same structure, and both have threads on their outer walls; a first sleeve is sleeved on the first support rod, the first sleeve being located on the side of the main body of the float away from the middle float; a second sleeve is sleeved on the second support rod, the second sleeve has the same structure as the first sleeve, and the maximum outer diameter of the second sleeve is smaller than the diameter of the first sink hole; a third sleeve is sleeved on the third support rod, and the third sleeve, when moved into position, can be threadedly connected to the first threaded post.

[0011] In a preferred embodiment of the present invention, a second sinking groove is provided on both sides of the intermediate float, and the second sinking groove extends along the length direction of the intermediate float; a guide hole is provided at the top of the end of the second sinking groove away from the first support rod, the guide hole is a rectangular hole structure, and a second insertion hole is provided at the bottom; a limit ring is installed at the top of the guide hole, the inner diameter of the limit ring is smaller than the cross-sectional side length of the guide hole; a clamping head is fixedly provided at the end of the third support rod, the top surface of the clamping head is provided with a clamping groove, the shape of the clamping groove is adapted to the shape of the guide hole; a circular hole is provided through the center of the bottom surface of the clamping groove, the diameter of the circular hole is... The space is adapted to the second insertion hole; the locking structure includes a pull rod, a locking element, and a second spring; the locking element includes a limiting post, the diameter of which is adapted to the diameter of the circular hole, and the length of which is greater than the length of the circular hole; a limiting block is fixedly provided at the top of the limiting post, the shape of which is adapted to the shape of the slot, and the length of which is greater than the depth of the slot; a threaded hole is provided at the center of the top surface of the limiting block, and a second threaded post is fixedly provided at the bottom of the pull rod, the second threaded post being threadedly connected to the threaded hole; the diameter of the pull rod is adapted to the inner diameter of the limiting ring, and a pull head is fixedly provided at the top of the pull rod; The second spring is sleeved on the pull rod and clamped between the locking piece and the limiting ring, providing the locking piece with a downward pushing force.

[0012] The present invention also discloses a method for using a foldable trimaran unmanned surface vessel; when the unmanned surface vessel is in a folded state, the third support rod is retracted into the second sinking tank; the end of the float is folded and covers the top surface of the float body; the side floats are close to the side of the middle float, the first support rod passes through the outside of the first through hole, and the second support rod passes through the outside of the second through hole; the second sleeve moves to the side wall of the float body and locks it in place, so that the side floats are maintained in the required position; The unfolding method includes the following steps: S1, Remove the second sleeve from the second support rod; Install the second sleeve on the first support rod, making the ends of both flush; S2, move the side float outward until the end of the second sleeve abuts against the first sinker hole; at this point, the side float can no longer move outward; S3, rotate the first sleeve outwards until it can no longer move, thus locking it; at this time, the side float cannot move inwards. S4, drag the push block, move the push frame, release the lock on the end of the float; and flip the end of the float to the end position of the main body of the float; release the force on the push block, move the push frame outward, so that the first insertion rod extends outward and is inserted into the first insertion hole to lock the end of the float; S5, pull the lever upward to release the lock on the clamp; swing the third support rod outward to the preset position; release the lever, the lever moves downward to the reset position, and locks the clamp on the clamp again; S6, move the third sleeve so that it fits onto the first threaded post, and connect the end of the float to the third support rod; complete the deployment and installation of the side float. S7, perform steps S1 to S6 on the other side float to complete the deployment and installation of the other side float; To use the folding function, simply reverse the order of operations.

[0013] The beneficial effects of this invention are as follows: This invention provides a foldable trimaran unmanned surface vessel and its usage method, comprising a central float and two side floats; the two side floats are installed and connected to both sides of the central float, and can be adjusted to achieve both spreading out and folding together; each side float includes a main body and a float end, the float end can be adjusted to flip to the top surface of the main body and maintained in a folded state by locking; folding adjustment can be made in both the lateral width and longitudinal length, making the overall structure more compact, reducing the space occupied, and facilitating handling and transportation; its deployment operation is simple, and it can be deployed on-site, facilitating practical use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a foldable trimaran unmanned vessel in its unfolded state, provided in a specific embodiment of the present invention. Figure 2 This is a three-dimensional structural diagram of a foldable trimaran unmanned vessel in a folded state, provided in a specific embodiment of the present invention. Figure 3 This is a three-dimensional structural diagram of the intermediate float provided in a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the three-dimensional unfolded structure of the intermediate float provided in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional unfolded structure of the side float provided in a specific embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the floating body body and its internal structure provided in a specific embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the floating body provided in a specific embodiment of the present invention from a first perspective; Figure 8 This is a three-dimensional structural diagram of the floating body provided in a specific embodiment of the present invention from a second perspective; Figure 9 This is a three-dimensional structural diagram of the pusher frame provided in a specific embodiment of the present invention.

[0015] In the picture: 100. Intermediate float; 110. First support rod; 111. First sleeve; 120. Second support rod; 121. Second sleeve; 130. Third support rod; 131. Third sleeve; 132. Slot; 133. Round hole; 134. Clip; 140. Second sinker; 150. Guide hole; 160. Second insertion hole; 200. Side float; 210. Float body; 211. First cavity; 212. First perforation; 213. Recess; 214. First slot; 215. Second slot; 216. First through hole; 217. Second through hole; 218. First countersunk hole; 220. Float end; 221. First insertion hole; 222. Second hook; 223. First threaded post; 230. Hinge; 300. Locking mechanism; 310. Pushing frame; 311. First insert rod; 312. First hook; 313. Push plate; 314. First support plate; 315. Second support plate; 316. Support shaft; 317. Bushing; 320. First spring; 330. Unlocking assembly; 331. Push rod; 332. Push block; 333. Guide bolt; 334. Baffle; 335. Roller; 400. Locking structure; 410. Limiting ring; 420. Pull rod; 421. Second threaded post; 430. Clamp; 431. Limiting post; 432. Limiting block; 433. Threaded hole; 440. Second spring. Detailed Implementation

[0016] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1 , Figure 2As shown, a specific embodiment of the present invention discloses a foldable trimaran unmanned surface vessel, including a central float 100 and two side floats 200. The two side floats are installed on both sides of the central float and can be adjusted to achieve both outward deployment and folding together. The side floats 200 include a float body 210 and a float end 220. The float end can be adjusted to flip to the top surface of the float body and maintained in a folded state by locking. The folding adjustment can be made in both the lateral width and longitudinal length, making the overall structure more compact, reducing the space occupied, and facilitating handling and transportation. Its deployment operation is simple and can be carried out on-site, making it convenient for practical use.

[0018] Furthermore, such as Figure 5 , Figure 6 As shown, the main body 210 and the end 220 of the float are rotatably connected by a hinge 230 located at the top of the docking point, which provides the basic conditions for the end of the float to rotate and swing, making it easy to unfold or cover. The main body 210 of the float has a first cavity 211 inside, and a locking mechanism 300 is provided in the first cavity 211. The locking mechanism is used to lock the end of the float after it is unfolded or folded. The end of the float after it is unfolded and the end of the float after it is flipped and folded are both locked by the locking mechanism, which simplifies the overall structural design and facilitates adjustment and operation.

[0019] Furthermore, such as Figures 5 to 9 As shown, the locking mechanism 300 includes a pusher frame 310, a first spring 320, and an unlocking component 330. At least one first through hole 212 is provided on the wall surface of the first cavity 211 near the end of the float. A corresponding first insertion hole 221 is provided on the wall surface of the end of the float 220 near the main body of the float. The diameter of the first insertion hole matches the diameter of the first through hole. The pusher frame is located within the first cavity. A first insertion rod 311 is provided on the pusher frame 310, and the first insertion rod 311 is movably inserted through the first through hole 212. The first spring provides an outward pushing force to the pusher frame, keeping the first insertion rod extended. The top of the end of the float is rotatably connected to the main body of the float. The end of the float can only rotate around the hinge axis and will not move left or right. When the first insertion rod is inserted into the first insertion hole, the end of the float is prevented from flipping, thus allowing the end of the float to move and completing the locking process. A first hook 312 is fixedly provided on the top of the end of the pusher 310 away from the first insert rod; a second hook 222 is installed on the top surface of the end of the float body 220 away from the main body of the float. The second hook and the first hook can lock the float body end when it is flipped and folded into place. By using the action of the float body end flipping and covering the top surface of the main body of the float, the end of the float body end close to the main body of the float is still connected to the hinge, while the other end is hooked with the first hook through the second hook, thereby locking the float body end and making it folded and placed on the top surface of the main body of the float. By adjusting the unlocking component, the pusher can be moved in the direction of overcoming the elastic force of the first spring, so that the first insert rod is disengaged from the first insertion hole and the first hook is unlocked; the first hook can also be disengaged from the second hook and the first hook is unlocked. The use of the same unlocking component facilitates the design of the overall structure and makes it more convenient to use and operate.

[0020] Furthermore, the pusher frame 310 includes a push plate 313, on one wall of which three first insert rods 311 are fixedly provided. The three first insert rods are distributed in an inverted isosceles triangle. The number of first through holes is the same as the number of first insert rods, and their positions correspond. Each first insert rod is fitted with a first spring. Providing multiple first insert rods as cooperating and defining parts can strengthen the overall structural stress and prevent a single first insert rod from deforming, bending, or being damaged under stress. Moreover, the multiple first insert rods are distributed at the three corners of the inverted isosceles triangle, which can disperse the force and improve the stability of the overall structure. A first frame plate 314 and a second frame plate 315 extending outwards are fixedly provided on the wall surface of the push plate 313 away from the first insertion rod. The first frame plate and the second frame plate are parallel. A support shaft 316 is installed between the middle of the first frame plate 314 and the second frame plate 315, and the support shaft is used as the force-bearing part for pushing the pusher frame during unlocking. A first hook is fixedly provided on the top of the end of the first frame plate away from the push plate. A cavity 213 is provided on the side wall of the float body 210. The cavity 213 and the first cavity 211 are connected through the first strip opening 214. The unlocking assembly 330 includes a push rod 331 and a push block. 332, push rod 331 is movably inserted through the first strip opening 214, one end of push rod is rotatably mounted on the inner wall of the cavity, push rod 331 passes between the first frame plate and the second frame plate, and is located on one side of the support shaft 316; push block 332 is slidably disposed in the cavity 213, push block is used to push the free end of push rod, thereby providing force to the support shaft, causing the push frame to move in the direction of overcoming the elastic force of the first spring; by moving the push block, the push rod is driven to swing, thereby moving the push frame, and the force application method is changed by the action of the pry, which is more in line with the operating force habits and is easy to use.

[0021] Furthermore, the upper wall of the cavity 213 is provided with a second strip-shaped opening 215 communicating with the first cavity, and the second strip-shaped opening 215 is parallel to the first support plate 314; a guide bolt 333 is installed on the push block 332, and the guide bolt 333 slides along the second strip-shaped opening 215; the shape of the push block is adapted to the cross-sectional shape of the cavity, and a baffle 334 is fixedly provided on the side of the push block 332 away from the first strip-shaped opening. The baffle 334 slides tightly against the outer wall of the float body 210, and the baffle is provided with a groove corresponding to the position of the push block; the baffle is in a state of sealing the opening of the cavity before and after movement; it can block and protect the opening of the cavity to prevent external liquid from entering the interior of the first cavity from this part; wherein, a sealing ring is fixedly provided on the inner wall of the first perforation, and the first insert rod achieves the effect of sliding sealing through the sealing ring, which can also prevent external liquid from entering the interior of the first cavity; Furthermore, the bottom of the side wall of the first cavity may also be provided with an external drain port, and a sealing cap is installed at the external drain port to deal with the liquid that is discharged into the first cavity.

[0022] Furthermore, a bushing 317 is rotatably fitted on the outer side of the support shaft 316, and the push rod slides against the bushing; a roller 335 is rotatably mounted on the free end of the push rod 331, and the roller slides against the push block; the free end of the push rod has a notch, and the roller is rotatably mounted on the notch by bolts, with the side wall of the roller protruding outward from the notch and sliding against the push block; the above two structural designs are all to set sliding contact components at the stress point, which can further facilitate use and adjustment; It should be noted that the top of the first cavity is open and a cover plate is installed by screws. The cover plate has a third slot for the first hook to pass through and unlock. This structure facilitates the disassembly and assembly of the internal structure of the first cavity.

[0023] Furthermore, such as Figure 7 , Figure 8 As shown, the main body of the float 210 is provided with a first through hole 216 and a second through hole 217 that penetrate through opposite sides. The end of the first through hole 216 away from the middle float is provided with a first sink hole 218. The side wall of the end of the float 220 is provided with a first sinking groove. The first sinking groove has a circular structure and a first threaded post 223 is fixed in the first sinking groove. like Figure 3 , Figure 4As shown, a first support rod 110 and a second support rod 120 are fixedly installed on both sides of the intermediate float 100, and a third support rod 130 is rotatably installed. The third support rod 130 is locked by a locking structure 400. The first support rod 110 and the second support rod 120 are respectively set to correspond to the first through hole 216 and the second through hole 217. The outwardly unfolding third support rod 130 corresponds to the position of the first threaded post 223. The first support rod and the second support rod have the same structure, and both have threads on their outer walls. A first sleeve 111 is sleeved on the first support rod 110. The first sleeve is located on the side of the float body away from the intermediate float. A second sleeve 121 is fitted onto the second support rod 120. The second sleeve has the same structure as the first sleeve, but the maximum outer diameter of the second sleeve 121 is smaller than the diameter of the first countersunk hole 218. A third sleeve 131 is fitted onto the third support rod 130. The third sleeve, once in place, can be threadedly connected to the first threaded post. Through the connection and cooperation of multiple parts, it is ensured that the side float can be deformed, unfolded, or folded at a preset position, effectively preventing the side float from rotating or shifting, keeping it parallel to the middle float, facilitating actual adjustment operations, and maintaining sufficient connection structure strength, so that the entire unmanned vessel is in a stable state.

[0024] Furthermore, such as Figure 3 , Figure 4As shown, the intermediate float 100 has second sinkers 140 on both sides, extending along the length of the intermediate float; the top of the second sinker 140 away from the first support rod has a guide hole 150, which is a rectangular hole structure, and the bottom has a corresponding second insertion hole 160; a limit ring 410 is installed at the top of the guide hole 150, and the inner diameter of the limit ring is smaller than the cross-sectional side length of the guide hole; a clamp 134 is fixedly provided at the end of the third support rod 130, and the top surface of the clamp 134 has a clamping groove 132. The shape of the slot matches the shape of the guide hole; a circular hole 133 is provided through the center of the bottom surface of the slot 132, and the diameter of the circular hole matches the space of the second insertion hole; the locking structure 400 includes a pull rod 420, a locking member 430, and a second spring 440; the locking member 430 includes a limiting post 431, the diameter of which matches the diameter of the circular hole, and the length of which is greater than the length of the circular hole; a limiting block 432 is fixedly provided at the top of the limiting post 431, the shape of which matches the shape of the slot, and the length of which is greater than the slot. The depth; the center of the top surface of the limiting block 432 is provided with a threaded hole 433, and the bottom end of the pull rod 420 is fixedly provided with a second threaded post 421, which is threadedly connected to the threaded hole; the diameter of the pull rod is adapted to the inner diameter of the limiting ring, and the top end of the pull rod is fixedly provided with a pull head; the second spring is sleeved on the pull rod and clamped between the clip and the limiting ring, providing the clip with a downward pushing force; through the above structural design, the third support rod can be adjusted and retracted to the second sinking groove, with higher folding deformation performance and a more compact overall structure; especially when unfolding and adjusting, the end of the float can be flipped and unfolded into place first, and then the lateral expansion operation can be performed, which is more convenient for actual use; in addition, the above locking structure is simple in structure and easy to use, which can make it easy to maintain the third support rod in the unfolded or folded position, and can provide a stable support effect when unfolded; of course, it should be noted that the third support rod can also be a fixed structure, but when unfolding or folding, the order of operation needs to be adjusted to prevent the third support rod from affecting the movement of the side float.

[0025] It should be noted that recessed slots can be provided at the ends of the float and on the top surface of the main body of the float for installing drone mounting feet, so that they can be quickly assembled and disassembled with the drone, thereby enabling the use of the drone without affecting the folding of the unmanned vessel. Furthermore, a propulsion unit is installed at the stern of the hull, and the hull itself houses an independent power supply and control module. The intermediate buoy can also carry instruments including, but not limited to, the following: a multi-parameter water quality meter for monitoring parameters such as pH, turbidity, and dissolved oxygen; an ADCP-current meter for real-time feedback of flow velocity, water depth, and other factors; and echo sounders, sonar, and other equipment for collecting underwater hydrological and topographic data. It should be noted that the propulsion unit, power supply module, control module, and instruments carried by the unmanned surface vessel are all relatively common and can be purchased and used on the market, so details will not be elaborated upon.

[0026] This invention also discloses a method for using a foldable trimaran unmanned surface vessel. When the unmanned surface vessel is in the folded state, the third support rod is retracted into the second sinking tank; the end of the float is folded and covers the top surface of the float body; the side floats are close to the side of the middle float, the first support rod passes through the outside of the first through hole, and the second support rod passes through the outside of the second through hole; the second sleeve moves to the side wall of the float body and locks it in place, so that the side floats are maintained in the required position. The unfolding method includes the following steps: S1, Remove the second sleeve from the second support rod; Install the second sleeve on the first support rod, making the ends of both flush; S2, move the side float outward until the end of the second sleeve abuts against the first sinker hole; at this point, the side float can no longer move outward; S3, rotate the first sleeve outwards until it can no longer move, thus locking it; at this time, the side float cannot move inwards. S4, drag the push block, move the push frame, release the lock on the end of the float; and flip the end of the float to the end position of the main body of the float; release the force on the push block, move the push frame outward, so that the first insertion rod extends outward and is inserted into the first insertion hole to lock the end of the float; S5, pull the lever upward to release the lock on the clamp; swing the third support rod outward to the preset position; release the lever, the lever moves downward to the reset position, and locks the clamp on the clamp again; S6, move the third sleeve so that it fits onto the first threaded post, and connect the end of the float to the third support rod; complete the deployment and installation of the side float. S7, perform steps S1 to S6 on the other side float to complete the deployment and installation of the other side float; To use the folding function, simply reverse the order of operations.

[0027] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A foldable trimaran unmanned surface vessel, characterized in that: It includes a central floating body and two side floating bodies; Two side floats are installed on both sides of the middle float and can be adjusted to allow for spreading out and folding together. The side float includes the main body of the float and the end of the float. The end of the float can be adjusted to flip up to the top surface of the main body of the float and can be locked to maintain the folded state.

2. The foldable trimaran unmanned surface vessel according to claim 1, characterized in that: The main body of the float and the end of the float are rotatably connected by a hinge located at the top of the docking point; The main body of the float has a first cavity inside, and a locking mechanism is provided in the first cavity. The locking mechanism is used to lock the end of the float after it is unfolded or folded.

3. The foldable trimaran unmanned surface vessel according to claim 2, characterized in that: The locking mechanism includes a pusher, a first spring, and an unlocking assembly; At least one first through hole is provided on the wall surface of the first cavity near the end of the float, and a first insertion hole is provided on the wall surface of the end of the float near the main body of the float, and the diameter of the first insertion hole is adapted to the diameter of the first through hole. The pusher frame is installed in the first cavity, and the pusher frame is provided with a first insert rod, which is movably inserted through the first through hole; the first spring provides the pusher frame with an outward pushing force, so that the first insert rod is kept in the extended state; A first hook is fixedly provided at the top of the end of the pusher that is away from the first insert rod; a second hook is installed on the top surface of the end of the float that is away from the main body of the float. The second hook and the first hook can lock the end of the float that has been flipped and folded into place. The unlocking component can be adjusted to move the pusher in a direction that overcomes the spring force of the first spring, causing the first insert to disengage from the first insertion hole and thus unlocking; it can also disengage the first latch from the second latch and thus unlock.

4. A foldable trimaran unmanned surface vessel according to claim 3, characterized in that: The pusher includes a push plate, on one wall of which are fixed three first insert rods arranged in an inverted isosceles triangle shape; the number of first through holes is the same as the number of first insert rods, and their positions correspond. A first frame plate and a second frame plate extending outward are fixedly provided on the wall surface of the push plate away from the first insertion rod. The first frame plate and the second frame plate are parallel to each other. A support shaft is installed between the middle of the first frame plate and the second frame plate. A first hook is fixedly provided at the top of the end of the first frame plate away from the push plate. The side wall of the main body of the float is provided with a cavity, which is connected to the first cavity through a first strip opening; the unlocking component includes a push rod and a push block. The push rod is movably inserted through the first strip opening, and one end of the push rod is rotatably installed on the inner wall of the cavity. The push rod passes between the first frame plate and the second frame plate and is located on one side of the support shaft; the push block is slidably disposed in the cavity and is used to push the free end of the push rod, thereby applying force to the support shaft and causing the push frame to move in a direction that overcomes the elastic force of the first spring.

5. A foldable trimaran unmanned surface vessel according to claim 4, characterized in that: The upper wall of the concave cavity is provided with a second strip-shaped opening that communicates with the first cavity, and the second strip-shaped opening is parallel to the first frame plate; A guide bolt is installed on the push block, and the guide bolt slides along the second slot. The shape of the push block is adapted to the cross-sectional shape of the cavity. A baffle is fixed on the side of the push block away from the first strip opening. The baffle slides close to the outer wall of the float body. The baffle has a groove corresponding to the position of the push block. Before and after the movement, the baffles are in a state of blocking the opening of the concave cavity.

6. A foldable trimaran unmanned surface vessel according to claim 5, characterized in that: A bushing is rotatably fitted on the outer side of the support shaft, and the push rod slides against the bushing. A roller is rotatably mounted at the free end of the push rod, and the roller slides against the push block.

7. A foldable trimaran unmanned surface vessel according to claim 1, characterized in that: The main body of the float is provided with a first through hole and a second through hole that penetrates the opposite sides. The end of the first through hole away from the middle float is provided with a first sink hole. The side wall of the end of the float is provided with a first sinking groove. The first sinking groove has a circular structure and a first threaded post is fixed in the first sinking groove. The two side walls of the intermediate float are fixedly equipped with a first support rod and a second support rod, and a third support rod is rotatably installed thereon. The third support rod is locked by a locking structure. The first support rod and the second support rod are respectively set to correspond to the first through hole and the second through hole, and the third support rod that extends outward corresponds to the position of the first threaded column; The first support rod and the second support rod have the same structure and both have threads on their outer walls; a first sleeve is fitted on the first support rod and the first sleeve is located on the side of the main body of the float away from the middle float; a second sleeve is fitted on the second support rod and the second sleeve has the same structure as the first sleeve, but the maximum outer diameter of the second sleeve is smaller than the diameter of the first countersunk hole. The third support rod is fitted with a third sleeve, and the third sleeve, once moved into place, can be threadedly connected to the first threaded column.

8. A foldable trimaran unmanned surface vessel according to claim 7, characterized in that: The middle float is provided with second sinking troughs on both sides, and the second sinking troughs extend along the length of the middle float. The second settling tank has a guide hole at the top of the end away from the first support rod. The guide hole has a rectangular hole structure and a second insertion hole at the bottom. A limit ring is installed at the top of the guide hole. The inner diameter of the limit ring is smaller than the cross-sectional side length of the guide hole. The end of the third support rod is fixed with a clip, the top surface of the clip has a groove, the shape of the groove is adapted to the shape of the guide hole; a circular hole is provided through the center of the bottom surface of the groove, the diameter of the circular hole is adapted to the space of the second insertion hole. The locking structure includes a pull rod, a locking element, and a second spring; The locking component includes a limiting post, the diameter of which is adapted to the diameter of the circular hole, and the length of the limiting post is greater than the length of the circular hole; a limiting block is fixedly provided at the top of the limiting post, the shape of which is adapted to the shape of the locking groove, and the length of the limiting block is greater than the depth of the locking groove. The top surface of the limiting block has a threaded hole at its center, and the bottom end of the pull rod is fixedly provided with a second threaded post, which is threadedly connected to the threaded hole; the diameter of the pull rod is adapted to the inner diameter of the limiting ring, and the top end of the pull rod is fixedly provided with a pull head; The second spring is sleeved on the pull rod and clamped between the locking piece and the limiting ring, providing the locking piece with a downward pushing force.

9. A method for using a foldable trimaran unmanned surface vessel, characterized in that: In the folded state, the third support rod is retracted into the second sinking tank; the end of the float is folded and covers the top surface of the float body; the side float is close to the side of the middle float, the first support rod passes through the outside of the first through hole, and the second support rod passes through the outside of the second through hole; the second sleeve moves to the side wall of the float body and locks it in place, so that the side float is maintained in the required position. The unfolding method includes the following steps: S1, Remove the second sleeve from the second support rod; Install the second sleeve on the first support rod, making the ends of both flush; S2, move the side float outward until the end of the second sleeve abuts against the first sinker hole; at this point, the side float can no longer move outward; S3, rotate the first sleeve outwards until it can no longer move, thus locking it; at this time, the side float cannot move inwards. S4, drag the push block, move the push frame, release the lock on the end of the float; and flip the end of the float to the end position of the main body of the float; release the force on the push block, move the push frame outward, so that the first insertion rod extends outward and is inserted into the first insertion hole to lock the end of the float; S5, pull the lever upward to release the lock on the clamp; swing the third support rod outward to the preset position; release the lever, the lever moves downward to the reset position, and locks the clamp on the clamp again; S6, move the third sleeve so that it fits onto the first threaded post, and connect the end of the float to the third support rod; complete the deployment and installation of the side float. S7, perform steps S1 to S6 on the other side float to complete the deployment and installation of the other side float; To use the folding function, simply reverse the order of operations.

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