Fin plate self-gravity locking device and method

Abstract

The invention discloses a device and method for locking by means of the gravity of a fin plate, the device comprises a trunk and the fin plate arranged in the trunk, a plurality of gravity locking devices are arranged on the fin plate, each gravity locking device comprises a hydraulic telescopic rod ball, and each hydraulic telescopic rod ball comprises a second hydraulic cylinder and a hinge ball; a plurality of groups of locking seats are fixed in the trunk, the number of each group of locking seats corresponds to that of the gravity locking devices, each locking seat comprises a ball seat, and a large cambered surface and a small cambered surface which are communicated with each other are formed in each ball seat; the fin vertically slides in the trunk, and the multiple hinge balls of the multiple gravity locking devices can be inserted into the small arc faces of the locking bases in a one-to-one correspondence mode to achieve locking. The problem that a locking structure of a fin device on a ship is complex in design can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship engineering, and in particular relates to a device and method for locking a fin plate by its own gravity. Background Art

[0002] Fins are an important part of ships, especially high-performance ships such as marine scientific research vessels and warships. They are usually installed on the side or bottom of the ship. By adjusting the angle and position of the fins, the ship's rolling, pitching, heaving and other motion states can be effectively improved, and the ship's stability and maneuverability can be improved. Especially in severe sea conditions, fins can significantly reduce the shaking and pitching of the ship, ensuring the safety of the ship and personnel.

[0003] Traditional fin locking devices mainly rely on complex mechanical structures or hydraulic systems to achieve the locking and unlocking of fins. Although these devices meet the needs of fin locking to a certain extent, they also have many limitations.

[0004] Firstly, fin locking devices with complex mechanical structures are often bulky and heavy, which not only increases the load on the ship but may also affect the ship's maneuverability; at the same time, the complex mechanical structure also increases the maintenance cost and failure rate of the equipment.

[0005] Secondly, although the hydraulic system has the advantages of large locking force and fast response speed, it also needs to be equipped with a special hydraulic system and power source, which not only increases the complexity and cost of the equipment, but may also affect the locking effect of the fin due to problems such as hydraulic system leakage and insufficient pressure. Summary of the invention

[0006] The present invention provides a device and method for locking by relying on the weight of the fin itself, so as to solve the problem of complex design of the locking structure of the fin device on the ship.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: On the one hand, the present application provides a device that relies on the gravity of a fin plate to lock, including a well enclosure and a fin plate arranged in the well enclosure, the fin plate is provided with a gravity locking device, the gravity locking device includes a plurality of hydraulic telescopic rod balls, the hydraulic telescopic rod balls include a second hydraulic cylinder and an articulated ball; A plurality of groups of locking seats are fixed in the enclosure, the number of the locking seats in each group corresponds to the number of the hydraulic telescopic rod balls, the locking seats include ball seats, and a large arc surface and a small arc surface are formed in the ball seats; The fin plate slides vertically in the enclosure, and the plurality of articulated balls of the plurality of hydraulic telescopic rod balls can be plugged into the small arc surface of the locking seat one by one to achieve locking. Furthermore, the gravity locking device further comprises a first hydraulic cylinder and a square rod, wherein the first hydraulic cylinder and the square rod are fixed in the fin plate, and one end of the first hydraulic cylinder is fixed to the fin plate, and the other end is connected to the square rod; The outer surface of the square rod is connected with a square rod sleeve, and the hydraulic telescopic ball rod is rotatably connected with the square rod sleeve.

[0008] Furthermore, at least one group of the locking seats is arranged near the upper part of the enclosure, and when the gravity locking device is engaged with the group of locking seats, the fin is in a non-working state; At least one group of the locking seats is arranged near the lower part of the enclosure, and when the gravity locking device is engaged with the group of locking seats, the fins are in working state and are partially located in water.

[0009] Furthermore, a plurality of side support plates are fixed to the inner wall of the enclosure, and the side support plates include reinforcing rib plates and side arc plates. The reinforcing rib plates are fixed to the side arc plates and the inner wall of the enclosure at the same time, and the side arc plates are used to fit with the side walls of the fin plates.

[0010] Furthermore, a stern guide rail for cooperating with the tail positioning curved surface of the fin plate, and a bow guide rail for cooperating with the bow side surface of the fin plate are also provided in the enclosure, and the bow guide rail and the stern guide rail are both supported against the side wall of the fin plate.

[0011] Furthermore, the top plate of the enclosure is provided with a driving device, which includes a drum, a hydraulic motor and a steel cable. The hydraulic motor drives the drum to rotate, the steel cable is wound around the outside of the drum and the free end of the steel cable is connected to the movable pulley.

[0012] Furthermore, a lifting pulley block is fixed on the top plate of the enclosure, and the lifting pulley block includes a fixed pulley fixed on the enclosure and a movable pulley fixed on the fin plate. The steel wire cable passes through the lifting pulley block and is connected to the fin plate.

[0013] Furthermore, a guide pulley is provided around the driving device, the guide pulley is fixed to the inner wall of the enclosure, and the steel wire cable passes through the guide pulley and is connected to the lifting pulley group.

[0014] Furthermore, a hoisting and installation device is fixed in the enclosure, and the hoisting and installation device includes a mounting frame fixed to the inner wall of the enclosure and a hoisting chain installed on the mounting frame, and the other end of the hoisting chain is connected to the fin.

[0015] On the other hand, the present application provides a method for locking the fin by its own gravity, comprising the following steps: S1: The fin is driven by the driving device to move to the vicinity of the working position, and part of the fin enters the water; S2: The ball of the hydraulic telescopic rod is extended to a suitable length until the articulated ball is inserted into the small arc surface of the locking seat; S3: Release the pulling force of the driving device on the fin in the vertical direction, and make the fin tightly pressed against the stern guide rail and the side arc plate through the reaction force of the locking seat; S4: Extend the first hydraulic cylinder, press down the square rod, the square rod sleeve and the hydraulic telescopic rod ball, increase the supporting force of the locking seat on the fin, and lock the position of the fin; S5: After the fin plate is working, the first hydraulic cylinder and the second hydraulic cylinder are retracted, and the lifting device lifts the fin plate to the position when the fin plate is not working and locks it. The locking steps S1-S4 are repeated.

[0016] The present invention can achieve the following beneficial effects: 1. Traditional fin locking devices usually use hydraulic or electric energy or other forms of energy to provide locking kinetic energy. The present application uses the cooperation of the locking seat and the gravity locking device to achieve locking using the fin's own weight, thereby reducing the consumption of other additional costs and saving more use costs.

[0017] 2. The gravity locking device of the present application is provided with a first hydraulic cylinder and a second hydraulic cylinder. By adjusting the length of the first hydraulic cylinder and the second hydraulic cylinder, the locking position of the fin can be adjusted. Compared with the traditional locking mechanism which often has one or two fixed position locking, the locking device of the present application can achieve locking in a larger area and realize personalized position locking.

[0018] 3. The locking device of the present application has a simple structure and high reliability. The device of the present application adopts a simple mechanical structure, avoiding the complexity of the traditional fin locking device; since the locking process completely relies on the gravity of the fin, the locking failure problem caused by system failure is avoided; in addition, the locking device of the present application can be applied to different types of ships and fin devices, and has a wide range of applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a partial structural schematic diagram of a device for locking by the fin plate's own gravity according to the present invention; Figure 2 It is a front view of the internal structure of a device of the present invention that relies on the fin plate's own gravity to lock; Figure 3 It is a partial structural schematic diagram for demonstrating the structure of the gravity locking device of the present invention; Figure 4 This is a partial structural schematic diagram of the present invention for showing the internal structure of the fin; Figure 5 It is a schematic structural diagram of the side support plate of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Well enclosure; 2. Fin plate; 3. Drive device; 31. Bracket; 32. Hydraulic motor; 33. Drum; 34. Wire rope; 4. Lifting pulley block; 41. Fixed pulley; 42. Movable pulley; 43. Support; 5. Guide pulley; 6. Lifting safety device; 61. Mounting frame; 62. Lifting chain; 7. Side support plate; 71. Reinforcement rib plate; 72. Side arc plate; 8. Locking seat; 81. Base; 82. Ball seat; 83. Large arc surface; 84. Small arc surface; 9. Gravity locking device; 91. First hydraulic cylinder; 92. Square rod; 93. Square rod sleeve; 94. Hydraulic telescopic rod ball; 941. Second hydraulic cylinder; 942. Articulated ball; 95. Support block; 100. Bow guide rail; 101. Stern guide rail; 102. Air cushion. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] like Figures 1 to 5 As shown, a device that relies on the fin's own gravity to lock includes a well enclosure 1, in which a fin 2 and a driving device 3 are arranged. The driving device 3 is fixed to the top plate of the well enclosure 1, and the fin 2 is connected to the driving device 3. The fin 2 is lifted and lowered by the driving device 3.

[0023] The driving device 3 includes a bracket 31 fixed on the top plate of the enclosure 1, a hydraulic motor 32 installed on the bracket 31, and a drum 33 fixed outside the hydraulic motor 32, with a steel cable 34 wound outside the drum 33. The bracket 31 is fixedly supported, the hydraulic motor 32 provides lifting power, and the steel cable 34 realizes the connection between the driving device 3 and the fin 2, and the hydraulic motor 32 provides the power for the fin 2 to rise and fall through the forward and reverse rotation of the hydraulic motor 32.

[0024] Among them, a lifting pulley block 4 is also provided on the top plate of the enclosure 1, and the lifting pulley block 4 includes a fixed pulley 41 at the upper part and a movable pulley 42 at the lower part. A support 43 is provided outside the fixed pulley 41, and the support 43 is fixed to the top plate of the enclosure 1. The movable pulley 42 is installed on the top plate of the fin plate 2. The lifting pulley block 4 can work together to reduce the load of the wire rope 34 and improve the force of the wire rope 34. It should be noted that the attached Figure 1 The fixed pulley 41 is shown in the figure, and the fixed pulley 41 is not connected to the fin 2.

[0025] A guide pulley 5 is also provided on the top plate of the surrounding well 1. The guide pulley 5 is used to convert the vertical transmission of the wire cable 34 into a horizontal direction, improve the force and reasonably arrange the space device, and ensure that the wire cable 34 has no deflection and jitter on the side of the fixed pulley 41; one end of the wire cable 34 on the guide pulley 5 is connected to the fixed pulley 41, and the other end is connected to the drum 33.

[0026] A lifting safety device 6 is fixed on the top plate of the enclosure 1, and the lifting safety device 6 includes a mounting frame 61 and a lifting chain 62 mounted on the mounting frame 61. During lifting, two lifting chains 62 are connected to the lifting positions at both ends of the fin plate 2 to prevent the driving device 3 from running unstably during lifting.

[0027] The inner wall of the well 1 is provided with a plurality of side support plates 7 for guiding the lifting trajectory of the fin 2. The plurality of side support plates 7 are arranged at intervals on the opposite side walls of the well 1 along the lifting path of the fin 2. The side support plates 7 include a reinforcing rib plate 71 and a side arc plate 72. The reinforcing rib plate 71 is fixed between the side arc plate 72 and the inner wall of the well 1 to support the side arc plate 72 and limit slight shaking of the side arc plate 72 to stabilize it. The surface of the side arc plate 72 fits with the side of the fin 2, so as to guide the movement trajectory of the fin 2.

[0028] Furthermore, a bow guide rail 100 and a stern guide rail 101 are also provided in the enclosure 1. The stern guide rail 101 is used to cooperate with the tail positioning curved surface of the fin 2. The bow guide rail 100 is arranged on the bow side of the enclosure 1 to support the bow side of the fin 2. When the hull sways slightly, the fin 2 is arranged in the lifting channel between the bow guide rail 100 and the stern guide rail 101, and the shaking of the fin 2 will be limited between the bow guide rail 100 and the stern guide rail 101, so that the lifting and lowering movement of the fin 2 is convenient.

[0029] There are multiple sets of locking seats 8 in the enclosure 1, each set of locking seats 8 includes at least two locking seats 8, and at least one set is set at the upper part of the enclosure 1, which is the locking position when the fin 2 is cruising and not working; at least one set is set at the lower part of the enclosure 1, which is the locking position when the fin 2 is working. When the fin 2 is locked in the working position, it has a sufficient depth of entry into the water. Each set of locking seats 8 includes a base 81 and a ball seat 82, and a large arc surface 83 and a small arc surface 84 are formed in the ball seat 82.

[0030] The fin 2 is rotatably mounted with a gravity locking device 9, which cooperates with the locking seat 8 to achieve the locking of the fin 2 by its own gravity. The gravity locking device 9 includes a first hydraulic cylinder 91, a square rod 92, a square rod sleeve 93 and a hydraulic telescopic rod ball 94. One end of the first hydraulic cylinder 91 is fixed to the fin 2, and the other end is connected to the square rod 92. The first hydraulic cylinder 91 can adjust the position of the square rod 92 in the vertical direction; the square rod sleeve 93 is slidably sleeved outside the square rod 92. When the relative position between the square rod sleeve 93 and the square rod 92 is determined, the position of the square rod 92 sleeve and the square rod 92 is locked by a pin shaft; both ends of the square rod 92 sleeve are also provided with a support block 95, and the hydraulic telescopic rod ball 94 is rotatably connected to the support block 95. Specifically, a movable pin can be used to form a movable joint between the support block 95 and the hydraulic telescopic rod ball 94.

[0031] The rods of the hydraulic telescopic rod balls 94 on the two supporting blocks 95 are arranged in parallel. It should be noted that the number of the hydraulic telescopic rod balls 94 corresponds to the number of locking seats 8 included in each group of locking seats 8. The hydraulic telescopic rod ball 94 includes a second hydraulic cylinder 941 and an articulated ball 942. One side of the second hydraulic cylinder 941 forms a movable joint with the supporting block 95, and the other side is connected to the articulated ball 942. The self-weight locking of the fin 2 is achieved by engaging the hydraulic telescopic rod ball 94 in the locking seat 8.

[0032] Specifically, the driving device 3 is used to drive the fin plate 2 to move vertically along the bow guide rail 100 and the stern guide rail 101. When the fin plate 2 is not in operation, the fin plate 2 is moved downward until the multiple hydraulic telescopic rod balls 94 on the gravity locking seat 8 are respectively and one by one connected to the multiple locking seats 8 arranged near the upper part of the enclosure 1. The locking seat 8 adopts an inverted gourd-like arrangement of arc surfaces, that is, the large arc surface 83 has a larger opening, which is convenient for the articulation ball 942 to fall accurately into the locking seat 8 in the vertical direction, and the size of the small arc surface 84 matches the size of the articulation ball 942. As the fin plate 2 moves downward, the articulation ball 942 can be connected to the small arc surface 84 to form a ball articulation, so that the articulation ball 942 cooperates with the small arc surface 84 in the locking seat 8 to achieve the self-weight locking of the fin plate 2.

[0033] In addition, the bow guide rail 100, the stern guide rail 101 and the inner wall of the side support plate 7 are all fitted with air cushions 102. When the fin 2 is in working state, the fin 2 cooperates with the locking seat 8 under its own gravity and is more tightly held by the first hydraulic cylinder 91 inside the fin 2. However, due to the surge of ocean currents, the fin 2 may still have a small range of free shaking. At this time, the air cushions 102 located in the bow guide rail 100, the stern guide rail 101 and the side support plate 7 begin to be inflated at the same time under the action of the air pump, so that the fin 2 is elastically supported, and the gap between the fin 2 and the surrounding side structure is filled by the air cushion 102, so that the fin 2 is locked as much as possible. When the fin 2 needs to be moved, the air release valve of the air cushion 102 can be opened to achieve deflation.

[0034] The present application also provides a method for locking the fins by their own gravity, comprising the following steps: S1: The driving device 3 drives the fin 2 to move to the vicinity of the working position, and part of the fin 2 enters the water.

[0035] S2: The hydraulic telescopic rod ball 94 is extended to a suitable length until the articulated ball 942 is inserted into the small arc surface 84 of the locking seat 8 to achieve articulation.

[0036] S3: Release the vertical pulling force of the driving device 3 on the fin 2. At this time, the fin 2 has a tendency to move downward under the action of its own weight, and at the same time, the fin 2 is horizontally limited by the stern guide rail 101, the side arc plate 72 and the bow guide rail 100, so that the locking seat 8 will give a reaction force to the hydraulic telescopic rod ball 94 under the action of gravity, so that the fin 2 is subjected to an oblique upward force, which is decomposed into two horizontal force components and one vertical force component.

[0037] The two horizontal force components press the fin 2 against the stern guide rail 101 and the side arc plate 72 respectively, thereby increasing the positive pressure of the stern guide rail 101 and the side arc plate 72, so that the friction between the fin 2 and the stern guide rail 101 and between the fin 2 and the side arc plate 72 increases; the vertical force component can partially offset the gravity of the fin 2 itself.

[0038] S4: Extend the first hydraulic cylinder 91. After the fin 2 is supported by the reaction force of the hydraulic telescopic rod ball 94, the first hydraulic cylinder 91 extends to a suitable length, and by pressing down the square rod 92, the square rod sleeve 93, the support block 95 and the hydraulic telescopic rod ball 94, the support force of the locking seat 8 on the fin 2 is increased, and a greater reaction force is obtained by using the movable joint with the support block 95, thereby locking the position of the fin 2 and achieving a more secure locking of the fin 2.

[0039] S5: After the fin 2 has finished working, the first hydraulic cylinder 91 and the second hydraulic cylinder 941 are retracted, and the lifting device lifts the fin 2 to the position when cruising and not working and locks it. The locking steps S1-S4 are repeated.

[0040] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device that relies on the fin's own gravity to lock, characterized in that: It comprises a well enclosure (1) and a fin plate (2) arranged in the well enclosure (1), the fin plate (2) being provided with a gravity locking device (9), the gravity locking device (9) comprising a plurality of hydraulic telescopic rod balls (94), the hydraulic telescopic rod balls (94) comprising a second hydraulic cylinder (941) and an articulated ball (942); A plurality of groups of locking seats (8) are fixed in the enclosure (1), the number of the locking seats (8) in each group corresponding to the number of the hydraulic telescopic rod balls (94), the locking seats (8) comprising ball seats (82), and a large arc surface (83) and a small arc surface (84) being formed in the ball seats (82) in communication with each other; The fin plate (2) slides vertically in the enclosure (1), and the plurality of articulated balls (942) of the plurality of hydraulic telescopic rod balls (94) can be plugged into the small arc surface (84) of the locking seat (8) in a one-to-one correspondence to achieve locking.

2. The device according to claim 1 that relies on the fin's own gravity to lock, characterized in that: The gravity locking device (9) further comprises a first hydraulic cylinder (91) and a square rod (92), wherein the first hydraulic cylinder (91) and the square rod (92) are fixed in the fin plate (2), and one end of the first hydraulic cylinder (91) is fixed to the fin plate (2), and the other end is connected to the square rod (92); The square rod (92) is outer-mounted with a square rod sleeve (93), and the hydraulic telescopic rod ball (94) is rotatably connected to the square rod sleeve (93).

3. The device according to claim 1 that relies on the fin's own gravity to lock, characterized in that: At least one group of the locking seats (8) is arranged near the upper part of the enclosure (1), and when the gravity locking device (9) is engaged with the group of locking seats (8), the fin plate (2) is in a non-operating state; At least one group of the locking seats (8) is arranged near the lower part of the enclosure (1), and when the gravity locking device (9) is engaged with the group of locking seats (8), the fin plate (2) is in a working state and is partially located in water.

4. The device according to claim 1 that relies on the fin's own gravity to lock, characterized in that: A plurality of side support plates (7) are fixed to the inner wall of the enclosure (1), the side support plates (7) comprising reinforcing rib plates (71) and side arc plates (72), the reinforcing rib plates (71) being fixed to the side arc plates (72) and the inner wall of the enclosure (1), and the side arc plates (72) being used to fit with the side walls of the fin plates (2).

5. The device according to claim 4 that relies on the fin's own gravity to lock, characterized in that: A stern guide rail (101) for cooperating with the tail positioning curved surface of the fin (2) and a bow guide rail (100) for cooperating with the bow side surface of the fin (2) are also provided in the enclosure (1), and the bow guide rail (100) and the stern guide rail (101) are both supported against the side wall of the fin (2).

6. The device according to claim 1 that relies on the fin's own gravity to lock, characterized in that: The top plate of the enclosure (1) is provided with a driving device (3), the driving device (3) comprising a drum (33), a hydraulic motor (32) and a steel cable (34), the hydraulic motor (32) driving the drum (33) to rotate, the steel cable (34) being wound around the outside of the drum (33) and the free end of the steel cable (34) being connected to the fin plate (2).

7. The device according to claim 6 that relies on the fin's own gravity to lock, characterized in that: A lifting pulley block (4) is fixed on the top plate of the enclosure (1), the lifting pulley block (4) comprising a fixed pulley (41) fixed on the enclosure (1) and a movable pulley (42) fixed on the fin plate (2), and the steel wire rope (34) passes through the lifting pulley block (4) and is connected to the movable pulley (42).

8. The device according to claim 7 that relies on the fin's own gravity to lock, characterized in that: A guide pulley (5) is also provided on the peripheral side of the driving device (3), the guide pulley (5) is fixed to the inner wall of the enclosure (1), and the steel wire rope (34) passes through the guide pulley (5) and is connected to the lifting pulley block (4).

9. The device for locking by the weight of the fin according to claim 1, characterized in that: A hoisting and mounting device (6) is also fixed in the enclosure (1), and the hoisting and mounting device (6) comprises a mounting frame (61) fixed to the inner wall of the enclosure (1) and a hoisting chain (62) mounted on the mounting frame (61), and the other end of the hoisting chain (62) is connected to the fin plate (2).

10. A method for locking a fin by its own weight, using the device for locking a fin by its own weight as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: the fin (2) is driven by the driving device (3) to move to the vicinity of the working position, and part of the fin (2) enters the water; S2: The hydraulic telescopic rod ball (94) is extended to a suitable length until the articulated ball (942) is inserted into the small arc surface (84) of the locking seat (8); S3: releasing the pulling force of the driving device (3) on the fin plate (2) in the vertical direction, and causing the fin plate (2) to be pressed against the stern guide rail (101) and the side arc plate (72) through the reaction force of the locking seat (8); S4: extending the first hydraulic cylinder (91), pressing down the square rod (92), the square rod sleeve (93) and the hydraulic telescopic rod ball (94), increasing the supporting force of the locking seat (8) on the fin plate (2), and achieving locking of the position of the fin plate (2); S5: After the fin plate (2) has completed its operation, the first hydraulic cylinder (91) and the second hydraulic cylinder (941) are retracted, and the lifting device lifts the fin plate (2) to a position when the fin plate (2) is not operating and locks it, and the locking steps S1 to S4 are repeated.

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