Double-lifting fin plate positioning and locking device and locking method

Abstract

The double-lifting fin plate positioning and locking device comprises a trunk, a fixed fin plate and a movable fin plate are arranged in the trunk, the fixed fin plate is fixedly installed in the trunk, a lifting device is arranged in the fixed fin plate, and the lifting device is used for driving the movable fin plate to ascend and descend along the trunk; a cruising position partition plate and a working position partition plate are arranged in the trunk, a limiting block capable of extending out of the side of the movable fin plate or being contained in the movable fin plate is arranged in the movable fin plate, and the limiting block can abut against the cruising position partition plate or the working position partition plate to achieve position locking of the movable fin plate. The locking state of the fin plate is more stable, and positioning is more accurate.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship equipment, and in particular relates to a double lifting fin positioning and locking device and a locking method. Background Art

[0002] A lifting fin is a device installed on a vessel that can be extended or retracted. By changing its angle and position, it improves vessel stability, maneuverability, and propulsion efficiency. Traditional fin locking technology has long relied on hydraulic systems to achieve both fin locking and subsequent unlocking.

[0003] In past practical applications, this type of hydraulic-based device was able to cope with some fin locking situations and basically ensured the smooth progress of related operations. However, with the acceleration of technological iterations and the increasing complexity of actual working conditions, its inherent series of shortcomings have become increasingly prominent, making it increasingly difficult to fully meet the current stringent requirements for precise, efficient, and stable fin locking. First, there is inevitably a certain amount of internal leakage in the hydraulic system, which may cause the lifting fin to slip slightly in the locked state, affecting its long-term stability and positioning accuracy; in addition, the maintenance of the hydraulic system is relatively complicated, and regular inspection and replacement of hydraulic oil, seals, etc. are required, and the maintenance cost is high and relatively complicated; thirdly, the performance of the hydraulic oil will be affected by temperature. Too high or too low a temperature may cause the working performance of the hydraulic system to decline, thereby affecting the locking effect of the lifting fin.

[0004] In terms of fin positioning, high-precision positioning is required for marine engineering operations in complex navigation scenarios. Simple automatic control systems cannot make real-time, precise adjustments to complex and changing sea conditions and vessel status. Furthermore, the cost of sensors and their supporting control systems is relatively high, especially high-precision, high-performance sensors and complex control systems, which increases the overall cost of the lifting fin system.

[0005] Sensors and control systems require regular maintenance and calibration to ensure proper operation. This maintenance process is complex and requires specialized technicians. Furthermore, sensor performance may be affected by external environmental factors such as temperature, humidity, and vibration. In harsh marine environments, sensor reliability and stability may be reduced. In complex electromagnetic environments, sensor signals may be interfered with, resulting in unstable data transmission or errors, which in turn affect the accuracy and reliability of fin control. Summary of the Invention

[0006] The present invention provides a dual-lift fin positioning and locking device and a locking method to solve the limitations of traditional fin locking devices and positioning methods.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: In one aspect, the present application provides a dual-lift fin positioning and locking device, comprising a well enclosure, wherein a fixed fin and a movable fin are disposed in the well enclosure, wherein the fixed fin is fixedly installed in the well enclosure, and a lifting device is disposed in the fixed fin, wherein the lifting device is used to drive the movable fin to rise and fall along the well enclosure; A cruising position partition and a working position partition are provided in the enclosure, and a limit block is provided in the movable fin that can extend out of the side wall of the movable fin or be received in the movable fin. The limit block can abut against the cruising position partition or the working position partition to realize the position locking of the movable fin. Furthermore, wedge blocks are provided on both the cruise position partition and the working position partition, the upper surfaces of the wedge blocks are inclined, the bottom walls of the limit blocks match and fit with the wedge blocks, and when the movable fin is locked, the limit blocks abut against the wedge blocks.

[0008] Furthermore, a hydraulic connecting rod mechanism is provided in the movable fin for driving the movement of the limit block. The hydraulic connecting rod mechanism includes a hydraulic cylinder and a piston rod installed at the output end of the hydraulic cylinder. The free end of the piston rod is rotatably connected to a push rod, and the end of the push rod away from the piston rod is rotatably connected to the limit block.

[0009] Furthermore, a waterproof protective cover is provided outside the connection between the piston rod, the hydraulic cylinder and the push rod and the piston rod.

[0010] Furthermore, a screw mechanism is provided in the fixed fin plate, and the screw mechanism includes a push rod capable of vertical movement, and the push rod passes through the fixed fin plate and contacts the top wall of the movable fin plate.

[0011] Furthermore, the screw mechanism includes a drive motor, the output end of the drive motor is connected to a screw, the external thread of the screw is sleeved with a pulley group, and the push rod is connected to the side wall of the pulley group; A support frame is also fixed on the driving motor, and a guide column is installed on the support frame. The guide column is slidably inserted into the pulley block to limit the rotation of the pulley block.

[0012] Furthermore, the lifting device includes a hydraulic winch, a pulley block and a steel cable, one end of the steel cable is connected to the hydraulic winch, and the other end passes around the pulley block and is connected to the top of the movable fin.

[0013] Furthermore, the outer contour curve of the fixed fin plate is consistent with the outer contour curve of the movable fin plate, and a polymer elastic layer is installed on the bottom of the fixed fin plate.

[0014] Furthermore, a stern guide rail is fixed to the inner wall of the enclosure along the height direction, and the guide side wall of the movable fin is in contact with the inner wall of the stern guide rail.

[0015] On the other hand, the present application provides a method for positioning and locking a double lifting fin, comprising the following steps: S1: The lifting device is started to lower the movable fin, and the movable fin is separated from the fixed fin; S2: When the movable fin passes through the cruise position partition, the limit block is driven to be pushed out until the limit block abuts against the cruise position partition, thereby locking the movable fin in the cruise position; S3: Drive the screw mechanism to operate, and the push rod pushes the movable fin plate downward, so that the limit block and the wedge block are further tightened; S4: When the movable fin is required to enter the working state, the hydraulic cylinder is used to drive the limit block to be retracted into the movable fin, and the lifting device continues to lower the movable fin until the limit block is aligned with the wedge block on the working position partition. The limit block is driven to extend to complete the locking of the movable fin working position.

[0016] The present invention can achieve the following beneficial effects: 1. The present application designs the fin as a split fin including a fixed fin and a movable fin, so that the detection equipment can be stably placed in the fixed fin, and the movement of the movable fin is utilized to guide the ship's navigation. In addition, the fin system of the present application has good self-locking performance. Once locked in place, the engagement of the limit block and the wedge block can effectively prevent the locking state from loosening. Even if the ship is subjected to vibration and impact during navigation, the movable fin can remain stably locked, which is safer and more reliable.

[0017] 2. Setting a screw structure can further realize personalized adjustment of the locking force, so that the movable fin of the present application can meet the locking requirements under different load conditions according to the actual load size. This adaptive feature can achieve more personalized adjustment when facing different detection tasks and environmental conditions.

[0018] 3. The driving structure of the limit block of the present application is simple in design and is provided with two sets of hydraulic connecting rod mechanisms and limit block structures, which are not easy to fail and are not easily interfered with by signals, so that the limit block of the present application can achieve accurate and timely control under any circumstances, thereby improving the safety and reliability of the use of the fin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and examples: Figure 1 This is a partial structural diagram of the present invention for illustrating the internal structure of the enclosure; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the partial structure of the lifting device used to illustrate the present invention; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure 5 This is a top view of the hydraulic connecting rod mechanism of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Well enclosure; 11. Top partition; 12. Middle partition; 13. Cruise position partition; 131. Wedge block; 14. Working position partition; 15. Stern guide rail; 2. Fixed fin; 3. Movable fin; 4. Lifting device; 41. Hydraulic winch; 42. Steel cable; 43. Fixed pulley block; 44. Movable pulley; 5. Hydraulic connecting rod mechanism; 51. Hydraulic cylinder; 52. Piston rod; 53. Push rod; 54. Limit block; 55. Connecting block; 56. Protective cover; 6. Screw mechanism; 61. Drive motor; 62. Screw; 53. Pulley block; 64. Support frame; 65. Guide column; 66. Support rod. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0022] like Figures 1 to 5 As shown, the present application discloses a device for positioning and locking a dual-lift fin system, comprising a well 1, within which are disposed a fixed fin 2 and a movable fin 3. The fixed fin 2 is fixedly mounted within the well 1 and is used to carry various underwater detection equipment, such as an acoustic detector, a current meter, a temperature sensor, etc.; the movable fin 3 is disposed below the fixed fin 2 and can be raised and lowered along the well 1, thereby enabling adjustment to different operating states of the vessel. The fixed fin 2 is connected to the inner wall of the well 1 via a rib plate, ensuring stable installation of the fixed fin 2. The outer contour curve of the fixed fin 2 is consistent with that of the movable fin 3, and a polymer elastic layer is installed at the bottom of the fixed fin 2 to reduce wear that may occur due to collision between the movable fin 3 and the fixed fin 2 when the movable fin 3 is retrieved.

[0023] The fixed fin 2 is equipped with a lifting device 4, which is used to drive the movable fin 3 up and down. The lifting device 4 includes a hydraulic winch 41, a steel cable 42, and a pulley block. The hydraulic winch 41 and the pulley block are both mounted on the inner bulkhead of the fixed fin 2. The pulley block 53 includes a fixed pulley block 43, a movable pulley 44, and a steel cable 42. The movable pulley 44 is fixed to the top of the movable fin 3. One end of the steel cable 42 is connected to the hydraulic winch 41, and the other end passes through the fixed pulley block 43 and movable pulley 44 before connecting to the movable fin 3. The hydraulic winch 41 is connected to the movable fin 3 through the pulley block 53, thereby improving the force applied to the steel cable 42 and allowing the movable fin 3 to be finely adjusted in the horizontal direction, thereby adapting to the turbulent operating environment of the ship.

[0024] Inside the enclosure 1, from top to bottom, are arranged a top bulkhead 11, multiple intermediate bulkheads 12, a cruise position bulkhead 13, and an operating position bulkhead 14. Wedge blocks 131 are fixed to the upper surfaces of both the cruise position bulkhead 13 and the operating position bulkhead 14. These wedge blocks 131 lock the position of the movable fin 3. When the movable fin 3 is locked with the cruise position bulkhead 13, it is retracted into the vessel, in the cruise position. When the movable fin 3 is locked with the operating position bulkhead 14, it partially extends out of the vessel, in the operating position.

[0025] Specifically, the movable fin 3 is provided with a stopper 54 for extending from the sidewall of the movable fin 3, and a hydraulic linkage mechanism 5 for driving the stopper 54 to extend from the movable fin 3 or be retracted into the movable fin 3. The hydraulic linkage mechanism 5 includes a hydraulic cylinder 51. The output end of the hydraulic cylinder 51 is connected to a piston rod 52. The end of the piston rod 52 remote from the hydraulic cylinder 51 is symmetrically connected to two push rods 53. The ends of the push rods 53 remote from the piston rod 52 are connected to the stopper 54. The hydraulic cylinder 51 drives the piston rod 52 to move, thereby driving the two push rods 53 to rotate relative to each other, thereby pushing the stopper 54. One end of the stopper 54 is hinged to the sidewall of the movable fin 3. Under the push of the push rods 53, the stopper 54 rotates relative to the movable fin 3, achieving the function of extending the stopper 54 from the sidewall of the movable fin 3 or being retracted into the movable fin 3.

[0026] When the movable fin 3 moves to the cruise position partition 13 or the working position partition 14, the hydraulic linkage mechanism 5 drives the limit block 54 to extend from the side wall of the movable fin 3, and causes the limit block 54 to abut against the corresponding wedge block 131, thereby locking the position of the movable fin 3. The upper surface of the wedge block 131 is inclined, and the bottom wall shape of the limit block 54 matches and fits the shape of the wedge block 131. Therefore, when the limit block 54 and the wedge block 131 abut, they can further limit the position of the movable fin 3 in the horizontal direction, achieving a more stable position locking of the movable fin 3. The hydraulic linkage mechanism 5 of the present application has a simple and convenient structural design, and can achieve a more flexible and maneuverable driving of the limit block 54.

[0027] A connecting block 55 is provided at one end of the piston rod 52 away from the hydraulic cylinder 51, and the two push rods 53 are symmetrically connected to the connecting block 55 for rotation, so that the piston rod 52 drives the two push rods 53 to move synchronously and symmetrically; in addition, a protective cover 56 is provided outside the hydraulic cylinder 51, the piston rod 52, and the connection point between the connecting block 55 and the push rod 53, and the protective cover 56 is used to make the internal structure waterproof, so as to limit the influence of seawater on the hydraulic connecting rod mechanism 5.

[0028] Furthermore, two sets of hydraulic connecting rod mechanisms 5 and corresponding limit blocks 54 are vertically spaced apart inside the movable fin 3. When one set of hydraulic connecting rod structures and corresponding limit blocks 54 fails or needs to be repaired, the other set of hydraulic connecting rod mechanisms 5 and limit blocks 54 can be used to lock the position of the movable fin 3. Only one set is shown in the drawings of this application.

[0029] A stern guide rail 15 is also fixed to the inner wall of the enclosure 1 along the height direction. The stern guide rail 15 is provided with multiple ribs along the height direction. The ribs are provided to achieve a stable connection between the stern guide rail 15 and the inner wall of the enclosure 1. The stern guide rail 15 contacts the guide side wall of the movable fin 3, thereby guiding the movement of the movable fin 3, reducing the displacement deviation of the movable fin 3 caused by vibration, and facilitating the lifting and lowering movement of the fin.

[0030] Furthermore, a screw mechanism 6 is provided within the fixed fin 2. This mechanism drives the movable fin 3 to adjust its position vertically. When the movable fin 3 is locked, the screw mechanism 6 can be used to drive the movable fin 3 downward until the stop block 54 and the wedge block 131 are further tightened. This improves the stability of the locked movable fin 3 and prevents it from shaking under the horizontal impact of seawater. It should be noted that the fixed fin 2 has a waterline, and the screw mechanism 6 must be located above the waterline.

[0031] Specifically, the screw mechanism 6 includes a drive motor 61, the output end of which is connected to a screw 62, which is externally threaded with a pulley block 53. Furthermore, a support frame 64 is fixed to the drive motor 61, on which guide posts 65 are mounted. The guide posts 65 are arranged on both sides of the screw 62 and are parallel to the screw 62. The guide posts 65 are slidably inserted into the pulley block 53 to guide the movement of the pulley block 53. A support rod 66 is also fixed to the side wall of the pulley block 53. The support rod 66 passes through the fixed fin 2 and abuts against the top wall of the movable fin 3. When the drive motor 61 drives the screw 62 to rotate, the guide posts 65 limit the pulley block 53 and move it along the screw 62, thereby driving the support rod 66 to rise and fall, thereby pushing the movable fin 3. After the movable fin 3 is locked in position, the lifting device 4 stops driving the movable fin 3. The position of the movable fin 3 is locked by the contact between the stop block 54 and the wedge block 131. At this time, the support rod 66 pushes the movable fin 3 downward, further contacting the stop block 54 and the wedge block 131, thereby achieving a more stable position lock of the movable fin 3. It should be noted that the length of the lead screw 62 is highly consistent with the movement trajectory of the movable fin 3.

[0032] The present application also provides a method for positioning and locking a dual lifting fin system, comprising the following steps: S1: The lifting device 4 is started to lower the movable fin 3, and the movable fin 3 and the fixed fin 2 are separated.

[0033] S2: When the movable fin 3 passes through the cruise position partition 13, the hydraulic cylinder 51 drives the limit block 54 to be pushed out until the limit block 54 and the wedge block 131 are tightly pressed against each other, thereby locking the movable fin 3 in the cruise position. At this time, the bottom wall of the movable fin 3 is flush with the surface of the ship.

[0034] S3: The screw mechanism 6 is driven to operate, and the supporting rod 66 pushes the movable fin 3 downward, so that the limiting block 54 and the wedge block 131 are further pressed together, thereby improving the locking stability of the movable fin 3. S4: When the movable fin 3 needs to enter the working state, the movable fin 3 is slightly lifted from the cruising position by the lifting device 4, and then the hydraulic cylinder 51 is used to drive the limit block 54 to be retracted into the movable fin 3. The lifting device 4 continues to lower the movable fin 3 until the limit block 54 is aligned with the wedge block 131 on the working position partition 14. The limit block 54 is driven to extend to complete the locking of the working position of the movable fin 3. The push rod 53 is also used to further tighten the limit block 54 and the wedge block 131.

[0035] 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 in the scope of protection of the present invention.

Claims

1. A double lifting fin positioning and locking device, characterized in that: The invention comprises a well enclosure (1), wherein a fixed fin plate (2) and a movable fin plate (3) are arranged in the well enclosure (1), wherein the fixed fin plate (2) is fixedly installed in the well enclosure (1), and a lifting device (4) is arranged in the fixed fin plate (2), wherein the lifting device (4) is used to drive the movable fin plate (3) to be lifted and lowered along the well enclosure (1); A cruise position partition (13) and a working position partition (14) are provided in the enclosure (1); a limit block (54) is provided in the movable fin (3) and is capable of extending out of a side wall of the movable fin (3) or being received in the movable fin (3); the limit block (54) is capable of abutting against the cruise position partition (13) or the working position partition (14) to achieve position locking of the movable fin (3).

2. A double lifting fin positioning and locking device according to claim 1, characterized in that: The cruise position partition (13) and the working position partition (14) are both provided with a wedge block (131), the upper surface of the wedge block (131) is inclined, the bottom wall of the limit block (54) matches with the wedge block (131), and when the movable fin (3) is locked, the limit block (54) abuts against the wedge block (131).

3. A double lifting fin positioning and locking device according to claim 1, characterized in that: A hydraulic connecting rod mechanism (5) for driving the limit block (54) to move is arranged inside the movable fin plate (3), the hydraulic connecting rod mechanism (5) comprising a hydraulic cylinder (51) and a piston rod (52) mounted on the output end of the hydraulic cylinder (51), the free end of the piston rod (52) being rotatably connected to a push rod (53), and one end of the push rod (53) away from the piston rod (52) being rotatably connected to the limit block (54).

4. A double lifting fin positioning and locking device according to claim 3, characterized in that: A protective cover (56) for waterproofing is provided outside the connection between the piston rod (52), the hydraulic cylinder (51), and the push rod (53) and the piston rod (52).

5. The double lifting fin positioning and locking device according to claim 1, characterized in that: A screw mechanism (6) is arranged inside the fixed fin plate (2), and the screw mechanism (6) comprises a push rod (53) capable of vertical movement, wherein the push rod (53) passes through the fixed fin plate (2) and contacts the top wall of the movable fin plate (3).

6. A double lifting fin positioning and locking device according to claim 5, characterized in that: The screw mechanism (6) comprises a drive motor (61), the output end of the drive motor (61) is connected to a screw (62), the screw (62) is externally threadedly sleeved with a pulley block (53), and the push rod (53) is connected to a side wall of the pulley block (53); A support frame (64) is also fixed on the driving motor (61), and a guide column (65) is installed on the support frame (64). The guide column (65) is slidably inserted into the pulley block (53) to limit the rotation of the pulley block (53).

7. The double lifting fin positioning and locking device according to claim 1, characterized in that: The lifting device (4) comprises a hydraulic winch (41), a pulley block (53) and a steel cable (42); one end of the steel cable (42) is connected to the hydraulic winch (41), and the other end of the steel cable (42) passes around the pulley block (53) and is connected to the top of the movable fin (3).

8. The double lifting fin positioning and locking device according to claim 1, characterized in that: The outer contour curve of the fixed fin plate (2) is consistent with the outer contour curve of the movable fin plate (3), and a polymer material elastic layer is installed at the bottom of the fixed fin plate (2).

9. The double lifting fin positioning and locking device according to claim 1, characterized in that: A stern guide rail (15) is fixed to the inner wall of the enclosure (1) along the height direction, and the guide side wall of the movable fin (3) is in contact with the inner wall of the stern guide rail (15).

10. A method for positioning and locking a double lifting fin plate, using the double lifting fin plate positioning and locking device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: the lifting device (4) is started to lower the movable fin (3), and the movable fin (3) and the fixed fin (2) are separated; S2: When the movable fin (3) passes through the cruise position partition (13), the limit block (54) is driven to be pushed out until the limit block (54) and the cruise position partition (13) abut against each other, thereby achieving locking of the movable fin (3) in the cruise position; S3: driving the lead screw mechanism (6) to operate, and the push rod (53) pushes the movable fin plate (3) downward, so that the limit block (54) and the wedge block (131) are further pressed against each other; S4: When the movable fin (3) is required to enter the working state, the hydraulic cylinder (51) is used to drive the limit block (54) to be retracted into the movable fin (3), and the lifting device (4) continues to lower the movable fin (3) until the limit block (54) is aligned with the wedge block (131) on the working position partition (14), and the limit block (54) is driven to extend to complete the locking of the working position of the movable fin (3).

Images