Marine protection device for liquefied natural gas storage

Abstract

The invention belongs to the technical field of liquefied natural gas storage protection, and particularly relates to a marine protection device for liquefied natural gas storage, which comprises a fixing seat, a supporting piece and a placing plate, the fixing seat is fixedly mounted on a ship body through screws, and a fixing mechanism for fixing a natural gas storage tank is arranged on the fixing seat. The placing plate is in linkage with the fixing mechanism through a transmission assembly, and a reinforcing fixing assembly is arranged on the fixing mechanism. According to the marine protection device for liquefied natural gas storage, through the linkage design of a transmission assembly and a fixing mechanism, when a placement plate moves downwards, a second synchronous wheel is driven to rotate clockwise, a rotating shaft rotates and drives a screw rod to rotate through a clamping structure of an elastic ratchet rod and ratchets, and therefore the storage effect is improved; compared with a traditional mode that the tension degree is manually adjusted one by one through a steel belt or a steel cable, the natural gas storage tank fixing device has the advantages that the storage tank fixing time is greatly shortened, and the ship loading and unloading efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquefied natural gas storage protection, and specifically to a marine protection device for liquefied natural gas storage. Background Technique

[0002] As a clean and efficient energy source, natural gas occupies an important position in the global energy structure. Liquefied natural gas (LNG) has become the main form of large-scale cross-regional transportation due to its high storage and transportation efficiency. In the scenario of waterway transportation, LNG storage tanks are usually carried on the hull of a transport ship, and the reliability of their fixation and protection is directly related to transportation safety.

[0003] Currently, when transporting natural gas tanks on the hull, steel bases (such as I-beam and channel steel frames) are welded on the hull deck or bulkhead. The bases need to be firmly connected to the main structure of the hull (such as ribs and longitudinal girders). Then, the natural gas tank is hoisted onto the base by a crane, and then high-strength steel belts (such as stainless steel belts) or steel cables are used to surround the outer circumference of the storage tank and fixed to the hull base or fixed points through turnbuckles or hydraulic tensioners to achieve the fixation of the natural gas tank. However, the process of tightening through turnbuckles or hydraulic tensioners is relatively slow, seriously affecting the loading and unloading efficiency and making it difficult to meet the increasing demand for natural gas transportation timeliness. In view of this, a marine protection device for liquefied natural gas storage is proposed. Summary of the Invention

[0004] The main purpose of the present invention is to provide a marine protection device for liquefied natural gas storage, which can solve the problems raised in the above background technique.

[0005] To achieve the above object, the marine protection device for liquefied natural gas storage proposed by the present invention includes a fixed seat, a support member, and a placement plate. The fixed seat is fixedly installed on the hull by screws. A fixing mechanism for fixing the natural gas storage tank is provided on the fixed seat. The placement plate is linked to the fixing mechanism through a transmission component. A strengthening fixing component is provided on the fixing mechanism. The fixing mechanism includes:

[0006] A mounting seat, which is fixedly connected to the fixed seat. A groove is opened on the mounting seat, and a screw rod is rotatably connected in the groove;

[0007] A moving block, which is threadedly connected to the screw rod and slidably connected in the groove;

[0008] Connecting rod, one end of the connecting rod is fixedly connected to the moving block, and the other end of the connecting rod is fixed to the positioning plate. Among them, one side of the positioning plate close to the connecting rod is in an inclined state, and the side of the positioning plate away from the connecting rod is in a vertical state. The crossbar part of the connecting rod is perpendicular to the inclined surface of the positioning plate. Positioning the natural gas storage tank through the positioning plate can fix the natural gas storage tank. At the same time, since the crossbar part of the connecting rod is perpendicular to the inclined surface of the positioning plate, when the positioning plate is subjected to a squeezing force, the connecting rod is subjected to an upward component force, so that the moving block is in close contact with the screw rod, preventing the screw rod from loosening and rotating and causing the movement of the moving block.

[0009] Preferably, the transmission assembly includes a driven assembly, a first synchronous pulley, a synchronous belt and a connecting piece. The synchronous belt is in transmission with the first synchronous pulley. The connecting piece is fixed to the synchronous belt, and the end of the connecting piece away from the synchronous belt is fixed to the placement plate.

[0010] Preferably, the driven assembly includes a second synchronous pulley. A ratchet tooth is fixedly connected to the inner wall of the second synchronous pulley. A clamping block is slidably connected to the inner wall of the second synchronous pulley. The clamping block is rotatably connected to a bolt. The bolt is threadedly connected to the second synchronous pulley. The second synchronous pulley is penetrated by a rotating shaft and is rotatably connected to the rotating shaft. An elastic ratchet rod is fixedly connected to the outer wall of the rotating shaft, and the elastic ratchet rod is engaged with the ratchet tooth. By engaging the elastic ratchet rod with the ratchet tooth, when the placement plate moves downward, the second synchronous pulley is driven to rotate clockwise. The elastic ratchet rod is limited by the ratchet tooth, so that the rotating shaft rotates, and then the screw rod rotates, driving the positioning plate to position the outer wall of the natural gas storage tank to fix the natural gas storage tank. Moreover, when the clamping block is away from the rotating shaft, the second synchronous pulley rotates counterclockwise and will not drive the rotating shaft to rotate. When the rotating clamping block abuts against the bolt, the second synchronous pulley rotates counterclockwise to drive the rotating shaft to rotate.

[0011] Preferably, the rotating shaft is fixed to the screw rod, and a through hole matching the rotating shaft is provided on the second synchronous pulley.

[0012] Preferably, both the first synchronous pulley and the second synchronous pulley are rotatably connected to the outer wall of the mounting seat.

[0013] Preferably, during the up and down movement of the placement plate, the connecting piece drives the synchronous belt to move, thereby driving the first synchronous pulley and the second synchronous pulley to rotate, and the screw rod rotates to adjust the position of the positioning plate.

[0014] Preferably, the strengthening and fixing component includes a fixing piece which is fixedly connected to the outer wall of the positioning plate. The fixing piece is penetrated by a limiting guide rod and is slidably connected to the limiting guide rod. One end of the limiting guide rod away from the fixing piece is fixedly connected with a rectangular plate. The outer wall of the rectangular plate abuts against a rotating wheel which is rotatably connected to a first swing rod. The first swing rod is hinged to a second swing rod. One end of the second swing rod away from the first swing rod is rotatably connected with a pressing wheel. The first swing rod and the second swing rod are connected by an adjusting telescopic rod. By positioning the natural gas storage tank through the positioning plate, the rectangular plate moves under the extrusion of the outer wall of the tank, the rectangle abuts against the rotating wheel and moves, the position of the first swing rod is adjusted, the second swing rod rotates and adjusts, and the pressing wheel presses the natural gas storage tank, strengthening the fixing effect on the natural gas storage tank. And by using the adjusting telescopic rod, the angle between the first swing rod and the second swing rod can be adjusted, so that the pressing wheel can fix natural gas storage tanks with different thicknesses.

[0015] Preferably, the rectangular plate and the fixing piece are elastically connected by a return spring. A positioning shaft is fixedly connected to the outer wall of the positioning plate. Both the first swing rod and the second swing rod are rotatably connected to the positioning shaft. The second swing rod and the positioning shaft are elastically connected by a torsion spring.

[0016] Preferably, both ends of the adjusting telescopic rod are hinged to the first swing rod and the second swing rod respectively.

[0017] Preferably, the supporting component is composed of a damper and a supporting spring. Both ends of the supporting component are fixed to the fixed seat and the placing plate respectively.

[0018] The present invention provides a marine protection device for liquefied natural gas storage, which has the following beneficial effects:

[0019] (1). Through the linkage design of the transmission component and the fixing mechanism of the marine protection device for liquefied natural gas storage, when the placing plate moves downward, it drives the second synchronous wheel to rotate clockwise. By using the clamping structure of the elastic ratchet rod and the ratchet teeth, the rotating shaft rotates and drives the screw rod to rotate, thereby driving the positioning plate to quickly position and fix the outer wall of the natural gas storage tank. Compared with the traditional method of manually adjusting the tension of steel belts or steel cables one by one, the fixing time of the storage tank is greatly shortened, and the ship loading and unloading efficiency is improved.

[0020] (2). Through the special inclined surface design of the positioning plate of the marine protection device for liquefied natural gas storage, when it is subjected to the extrusion force of the storage tank, the connecting rod will receive an upward component force, which promotes the moving block to be in close contact with the screw rod, effectively preventing the screw rod from loosening and rotating due to external forces such as the hull bumping and the sea wave impact, and ensuring the stable position of the moving block and the positioning plate. At the same time, the cooperation of the clamping block and the bolt in the driven component, when the clamping block moves away from the rotating shaft, the second synchronous wheel rotates counterclockwise and will not drive the rotating shaft, further avoiding the accidental rotation of the screw rod and ensuring the stability of the storage tank during transportation.

[0021] (3) The marine protection device strengthening and fixing assembly for liquefied natural gas storage can achieve adaptive adjustment according to the size of the storage tank. After the positioning plate completes the preliminary positioning of the storage tank, the rectangular plate squeezes the outer wall of the tank to push the rotating wheel, driving the first swing rod and the second swing rod to move, so that the pressing wheel automatically fits the surface of the storage tank and applies pressure, enhancing the fixing effect. The adjusting telescopic rod can flexibly change the angles of the first swing rod and the second swing rod to adapt to natural gas storage tanks of different thicknesses. The setting of the return spring and the button spring facilitates the subsequent reset of the rectangular plate and the pressing wheel. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Schematic diagram of the fixing structure of the natural gas storage tank of the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the fixing structure of the natural gas storage tank of the present invention Figure 2 ;

[0025] Figure 3 Schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of structure A in;

[0027] Figure 5 Schematic diagram of the partial structure of the fixing mechanism and the transmission assembly of the present invention Figure 1 ;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of structure B in;

[0029] Figure 7 Schematic diagram of the partial structure of the fixing mechanism and the transmission assembly of the present invention Figure 2 ;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of structure C in;

[0031] Figure 9 Schematic diagram of the second synchronous pulley of the present invention.

[0032] Explanation of the reference numerals in the drawings:

[0033] 1. Fixed seat; 2. Support member; 3. Placing plate; 4. Transmission assembly; 5. Fixing mechanism; 6. Reinforcing fixing assembly;

[0034] 41. Driven assembly; 42. First synchronous pulley; 43. Synchronous belt; 44. Connecting member; 411. Second synchronous pulley; 412. Ratchet teeth; 413. Clamping block; 414. Bolt; 415. Elastic ratchet rod; 416. Rotating shaft; 4101. Through port;

[0035] 51. Mounting seat; 52. Groove; 53. Screw rod; 54. Moving block; 55. Connecting rod; 56. Positioning plate;

[0036] 61. Fixing member; 62. Limit guiding rod; 63. Rectangular plate; 64. Rotating wheel; 65. First swing rod; 66. Second swing rod; 67. Positioning shaft; 68. Pressing wheel; 69. Adjusting telescopic rod.

[0037] The realization, functional features and advantages of the purpose of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 - 9 , the present invention provides a marine protection device for liquefied natural gas storage, including a fixed seat 1, a support member 2 and a placing plate 3. The support member 2 is composed of a damper and a support spring. The two ends of the support member 2 are respectively fixed to the fixed seat 1 and the placing plate 3. By using the damper and the support spring, when the natural gas storage tank is placed on the placing plate 3, the placing plate 3 will not drop rapidly but will drop at a slower speed. The fixed seat 1 is fixedly installed on the hull through embedded screws. A fixing mechanism 5 for fixing the natural gas storage tank is provided on the fixed seat 1. The placing plate 3 and the fixing mechanism 5 are linked through a transmission assembly 4. A reinforcing fixing assembly 6 is provided on the fixing mechanism 5.

[0040] In the embodiment of the present invention, in order to be able to quickly fix the natural gas storage tank, specifically, the fixing mechanism 5 includes a mounting seat 51, a moving block 54 and a connecting rod 55. The mounting seat 51 is fixedly connected to the fixing seat 1, and a groove 52 is provided on the mounting seat 51. A screw 53 is rotatably connected in the groove 52. The moving block 54 is threadedly connected to the screw 53. The moving block 54 is slidably connected in the groove 52. One end of the connecting rod 55 is fixedly connected to the moving block 54, and the other end of the connecting rod 55 is fixed to the positioning plate 56. The transmission component 4 includes a driven component 41, a synchronous wheel 42, a synchronous belt 43 and a connecting member 44. The synchronous belt 43 is driven by the synchronous wheel 42, the connecting member 44 is fixed to the synchronous belt 43, and the end of the connecting member 44 away from the synchronous belt 43 is fixed to the placement plate 3. The driven component 41 includes a synchronous wheel 2 411, a synchronous wheel 42 The synchronous wheel 411 is rotatably connected to the outer wall of the mounting seat 51, and a ratchet 412 is fixedly connected to the inner wall of the synchronous wheel 411. The synchronous wheel 411 is penetrated by the rotating shaft 416 and is rotatably connected to the rotating shaft 416. An elastic ratchet rod 415 is fixedly connected to the outer wall of the rotating shaft 416, and the elastic ratchet rod 415 is engaged with the ratchet 412. The rotating shaft 416 is fixed to the screw 53. The synchronous wheel 411 is provided with a through hole 4101 matching the rotating shaft 416. When the placement plate 3 moves up and down, the connecting piece 44 drives the synchronous belt 43 to move, thereby driving the synchronous wheel 1 42 and the synchronous wheel 2 411 to rotate. The screw 53 rotates to adjust the position of the positioning plate 56. When the placement plate 3 is lowered by the natural gas storage tank, the connecting piece 44 is driven to descend, thereby driving the synchronous belt 43 to move, so that the synchronous wheel 1 42 and the synchronous wheel 2 411 rotate. Please refer to Figure 8 , the synchronous wheel 411 rotates clockwise, and since the elastic ratchet rod 415 is limited by the ratchet 412, the rotating shaft 416 rotates, and then the screw 53 rotates, driving the moving block 54 to slide in the groove 52, and then driving the positioning plate 56 to automatically position the outer wall of the natural gas storage tank, thereby fixing the natural gas storage tank. Compared with the traditional method of manually adjusting the tension of each steel belt or steel cable, the tank fixing time is greatly shortened, and the efficiency of ship loading and unloading is improved.

[0041] Furthermore, in order to ensure the stability of the positioning plate 56, specifically, the side of the positioning plate 56 close to the connecting rod 55 is in an inclined state, and the side of the positioning plate 56 away from the connecting rod 55 is in a vertical state, and the cross bar part of the connecting rod 55 is perpendicular to the inclined surface of the positioning plate 56. Through this design, when the positioning plate 56 is subjected to the squeezing force of the storage tank, the connecting rod 55 will be subjected to an upward component of force, prompting the moving block 54 to be in close contact with the screw 53, effectively preventing the screw 53 from loosening and rotating due to external forces such as hull bumps and wave impacts, thereby ensuring the stability of the position of the moving block 54 and the positioning plate 56.

[0042] Further, to enable the positioning plate 56 to remain stable when the hull is bumping, and at the same time, to facilitate the subsequent removal of the natural gas storage tank. Specifically, a clamping block 413 is slidably connected to the inner wall of the second synchronous pulley 411. The clamping block 413 is rotatably connected to a bolt 414, and the bolt 414 is threadedly connected to the second synchronous pulley 411. When the clamping block 413 is away from the rotating shaft 416, the counterclockwise rotation of the second synchronous pulley 411 will not drive the rotating shaft 416 to rotate counterclockwise. At this time, even during the hull bumping process, the screw rod 53 will not rotate, further preventing the accidental rotation of the screw rod 53, and the positioning plate 56 remains stably fixed, so that the placement plate 3 and the natural gas storage tank will not move up and down, ensuring the stable fixation of the natural gas storage tank. When the bolt 414 is rotated to drive the clamping block 413 to move so that the clamping block 413 presses against the rotating shaft 416, the counterclockwise rotation of the second synchronous pulley 411 will drive the rotating shaft 416 to rotate. When the placement plate 3 moves upward, please refer to Figure 8 , the placement plate 3 drives the connecting member 44 to rise. Under the driving action of the synchronous belt 43, the second synchronous pulley 411 rotates counterclockwise, the rotating shaft 416 drives the screw rod 53 to reverse and reset, and drives the positioning plate 56 to reset, facilitating the subsequent removal of the natural gas storage tank.

[0043] In the embodiment of the present invention, to strengthen the fixation of the natural gas storage tank, specifically, the strengthening fixation component 6 includes a fixing member 61. The fixing member 61 is fixedly connected to the outer wall of the positioning plate 56. The fixing member 61 is penetrated by a limiting guide rod 62 and is slidably connected to the limiting guide rod 62. One end of the limiting guide rod 62 away from the fixing member 61 is fixedly connected to a rectangular plate 63. A rotating wheel 64 is abutted against the outer wall of the rectangular plate 63. The rotating wheel 64 is rotatably connected to a first swing rod 65. The first swing rod 65 is hinged to a second swing rod 66. One end of the second swing rod 66 away from the first swing rod 65 is rotatably connected to a pressing wheel 68. The first swing rod 65 and the second swing rod 66 are connected by an adjusting telescopic rod 69. The rectangular plate 63 and the fixing member 61 are elastically connected by a return spring. A positioning shaft 67 is fixedly connected to the outer wall of the positioning plate 56. Both the first swing rod 65 and the second swing rod 66 are rotatably connected to the positioning shaft 67. The second swing rod 66 and the positioning shaft 67 are elastically connected by a torsion spring. The two ends of the adjusting telescopic rod 69 are respectively hinged to the first swing rod 65 and the second swing rod 66. When the positioning plate 56 completes the preliminary positioning of the storage tank, during this process, the rectangular plate 63 is pushed by the outer wall of the tank to squeeze the rotating wheel 64, driving the first swing rod 65 and the second swing rod 66 to move, so that the pressing wheel 68 automatically fits the surface of the storage tank and applies pressure, enhancing the fixing effect. At the same time, the adjusting telescopic rod 69 can flexibly change the angle between the first swing rod 65 and the second swing rod 66 to adapt to natural gas storage tanks of different thicknesses. The settings of the return spring and the torsion spring facilitate the subsequent reset of the rectangular plate 63 and the pressing wheel 68.

[0044] During use, first hoist the natural gas storage tank, and then slowly place the natural gas storage tank on the placement plate 3. The placement plate 3 descends under the gravity of the natural gas storage tank. During this process, the connecting piece 44 is driven to descend, and then the synchronous belt 43 is driven to move, causing the first synchronous pulley 42 and the second synchronous pulley 411 to rotate. Please refer to Figure 8 , the second synchronous pulley 411 rotates clockwise. Since the elastic ratchet rod 415 is limited by the ratchet teeth 412, the rotating shaft 416 rotates, and then the screw rod 53 rotates, driving the moving block 54 to slide in the groove 52, and then driving the positioning plate 56 to automatically position the outer wall of the natural gas storage tank, realizing the fixation of the natural gas storage tank;

[0045] At the same time, during the fixation of the natural gas storage tank, the clamping block 413 moves away from the rotating shaft 416. At this time, during the hull bumping process, the screw rod 53 will not rotate, further avoiding the accidental rotation of the screw rod 53, and the positioning plate 56 remains stably fixed, so that the placement plate 3 and the natural gas storage tank will not move up and down;

[0046] At the same time, when the positioning plate 56 completes the preliminary positioning of the storage tank, during this process, the rectangular plate 63 is pushed by the outer wall of the tank to drive the rotating wheel 64, driving the first swing rod 65 and the second swing rod 66 to move, so that the pressing wheel 68 automatically fits the surface of the storage tank and applies pressure, strengthening the fixation of the natural gas storage tank. At the same time, the adjustable telescopic rod 69 can flexibly change the angles of the first swing rod 65 and the second swing rod 66 to adapt to natural gas storage tanks of different thicknesses.

[0047] At the same time, when the rotating bolt 414 drives the clamping block 413 to move and the clamping block 413 presses against the rotating shaft 416, the second synchronous pulley 411 needs to rotate counterclockwise to drive the rotating shaft 416 to rotate, so that when the placement plate 3 moves upward, please refer to Figure 8 , the placement plate 3 drives the connecting piece 44 to rise. Under the driving action of the synchronous belt 43, the second synchronous pulley 411 rotates counterclockwise, the rotating shaft 416 drives the screw rod 53 to reverse and reset, and drives the positioning plate 56 to reset, facilitating the subsequent removal of the natural gas storage tank.

[0048] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A marine protection device for liquefied natural gas storage, comprising a fixed seat (1), a support member (2) and a placement plate (3), wherein the fixed seat (1) is fixedly installed on the hull by embedded screws, and is characterized in that: The fixing seat (1) is provided with a fixing mechanism (5) for fixing the natural gas storage tank, the placement plate (3) and the fixing mechanism (5) are linked via a transmission assembly (4), the fixing mechanism (5) is provided with a reinforcement fixing assembly (6), and the fixing mechanism (5) comprises: A mounting seat (51), the mounting seat (51) being fixedly connected to the fixing seat (1), the mounting seat (51) being provided with a groove (52), and a screw rod (53) being rotatably connected in the groove (52); A moving block (54), the moving block (54) being threadedly connected to the screw rod (53), and the moving block (54) being slidably connected in the groove (52); A connecting rod (55), one end of the connecting rod (55) is fixedly connected to the moving block (54), and the other end of the connecting rod (55) is fixed to the positioning plate (56), wherein a side of the positioning plate (56) close to the connecting rod (55) is in an inclined state, and a side of the positioning plate (56) away from the connecting rod (55) is in a vertical state, and a crossbar portion of the connecting rod (55) is perpendicular to the inclined surface of the positioning plate (56).

2. The marine protection device for liquefied natural gas storage according to claim 1, wherein: The transmission assembly (4) comprises a driven assembly (41), a synchronous wheel (42), a synchronous belt (43) and a connecting piece (44); the synchronous belt (43) and the synchronous wheel (42) are driven, the connecting piece (44) and the synchronous belt (43) are fixed to each other, and one end of the connecting piece (44) away from the synchronous belt (43) is fixed to the placement plate (3).

3. The marine protection device for liquefied natural gas storage according to claim 2, wherein: The driven assembly (41) comprises a second synchronous wheel (411), a ratchet (412) being fixedly connected to the inner wall of the second synchronous wheel (411), a clamping block (413) being slidably connected to the inner wall of the second synchronous wheel (411), a bolt (414) being rotatably connected to the clamping block (413), the bolt (414) being threadedly connected to the second synchronous wheel (411), the second synchronous wheel (411) being penetrated by a rotating shaft (416) and being rotatably connected to the rotating shaft (416), an elastic ratchet rod (415) being fixedly connected to the outer wall of the rotating shaft (416), and the elastic ratchet rod (415) being clamped to the ratchet (412).

4. The marine protection device for liquefied natural gas storage according to claim 3, characterized in that: The rotating shaft (416) is fixed to the screw rod (53), and the second synchronous wheel (411) is provided with a through opening (4101) matching the rotating shaft (416).

5. The marine protection device for liquefied natural gas storage according to claim 3, characterized in that: The synchronous wheel 1 (42) and the synchronous wheel 2 (411) are both rotatably connected to the outer wall of the mounting seat (51).

6. The marine protection device for liquefied natural gas storage according to claim 4, wherein: When the placement plate (3) moves up and down, the connecting member (44) drives the synchronous belt (43) to move, thereby driving the synchronous wheel 1 (42) and the synchronous wheel 2 (411) to rotate, and the screw rod (53) to rotate to adjust the position of the positioning plate (56).

7. A marine protection device for liquefied natural gas storage according to claim 1, characterized in that: The strengthening and fixing component (6) includes a fixing member (61), the fixing member (61) is fixedly connected to the outer wall of the positioning plate (56), the fixing member (61) is penetrated by a limiting guide rod (62) and is slidably connected to the limiting guide rod (62). One end of the limiting guide rod (62) away from the fixing member (61) is fixedly connected with a rectangular plate (63). The outer wall of the rectangular plate (63) abuts against a rotating wheel (64). The rotating wheel (64) is rotatably connected to a first swing rod (65). The first swing rod (65) is hinged to a second swing rod (66). One end of the second swing rod (66) away from the first swing rod (65) is rotatably connected with a pressing wheel (68). The first swing rod (65) and the second swing rod (66) are connected by an adjusting telescopic rod (69).

8. A marine protection device for liquefied natural gas storage according to claim 7, characterized in that: The rectangular plate (63) and the fixing member (61) are elastically connected by a return spring. A positioning shaft (67) is fixedly connected to the outer wall of the positioning plate (56). Both the first swing rod (65) and the second swing rod (66) are rotatably connected to the positioning shaft (67). The second swing rod (66) and the positioning shaft (67) are elastically connected by a torsion spring.

9. The marine protection device for liquefied natural gas storage according to claim 7, characterized in that: Both ends of the adjusting telescopic rod (69) are respectively hinged to the first swing rod (65) and the second swing rod (66).

10. The marine protection device for liquefied natural gas storage according to claim 1, characterized in that: The support member (2) is composed of a damper and a support spring. Both ends of the support member (2) are respectively fixed to the fixed seat (1) and the placement plate (3).

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