A launching device and method for a ship

Abstract

The present invention discloses a launching device and method for a ship, relating to the technical field of ships. The technical solution includes a base, a placing table is slidably connected to the outside of the base, a fixing mechanism is arranged on one side of the placing table away from the base. The fixing mechanism includes a fixing base arranged on the outside of the placing table, a first cylinder is fixedly connected to one side of the fixing base away from the placing table, a triangular fixing block is arranged at the output end of the first cylinder, and a fixing clamping plate is rotatably connected to the outside of the triangular fixing block. In the present invention, when the placing table passes through the fixing control block, the fixing control block will squeeze the first sliding control block inside the placing table, so that the thread groove on the second sliding control block meshes with the worm. When the thread groove and the worm are fully meshed, the motor is started to make the worm rotate, driving the whole placing table to move and thus making the placing table reset, reducing the labor burden of the operator and improving the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly relates to a ship launching device and method. Background Art

[0002] A ship is a general term for various vessels. A ship is a means of transportation that can navigate or berth in water areas for transportation or operations. It has different technical performances, equipment, and structural forms according to different usage requirements. A ship is a man-made means of transportation that mainly operates in geographical waters. Ship launching is a technological process of moving the ship construction area to the water area. The ship construction area is a shipbuilding berth or a dry dock. Therefore, ship launching generally refers to the technological process of moving a ship from a shipbuilding berth or a dry dock to the water area. Usually, the former is called launching and the latter is called undocking.

[0003] When existing ships are launched, generally airbags are used for auxiliary launching. When in use, a large number of airbags are required, and operators are also required to place them properly. After the ship is launched, the airbags need to be recovered, which increases the labor burden of the operators, is not convenient to move, and at the same time cannot be adjusted and adapted to different hull sizes, resulting in low work efficiency. Therefore, a ship launching device and method are needed. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that a large number of airbags are required in use, operators are also required to place them properly, the airbags need to be recovered after the ship is launched, which increases the labor burden of the operators, is not convenient to move, and at the same time cannot be adjusted and adapted to different hull sizes, resulting in low work efficiency, and to propose a ship launching device and method.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution:

[0006] A ship launching device and method, including a base, a placing table is slidably connected to the outside of the base, a fixing mechanism is arranged on the side of the placing table away from the base, the fixing mechanism includes a fixing base arranged on the outside of the placing table, a first cylinder is fixedly connected to the side of the fixing base away from the placing table, a triangular fixing block is arranged at the output end of the first cylinder, and a fixing clamping plate is rotatably connected to the outside of the triangular fixing block;

[0007] The outside of the base is fixedly connected with a fixed control block. The outside of the placing table is slidably connected with a first sliding control block and a second sliding control block. The outside of the second sliding control block is fixedly connected with a third spring. One side of the third spring away from the second sliding control block is fixedly connected to the placing table. A threaded groove is provided on the side of the second sliding control block away from the third spring. A motor is fixedly connected inside the base. A worm is provided at the output end of the motor. The worm is in threaded connection with the threaded groove. An inclined groove is provided on the outside of the second sliding control block;

[0008] Wherein, one end of the base is in water and the other end is on land. The fixing mechanisms are symmetrically distributed on the placing table. The fixed control block and the first sliding control block have the same width.

[0009] The above technical solution further includes:

[0010] Preferably, the fixing mechanism includes a first telescopic rod arranged outside the fixed base. A second telescopic rod is fixedly connected to one side of the fixed base close to the first telescopic rod. Second sliding grooves are symmetrically provided on the outside of the fixed clamping plate. The second sliding grooves are slidably connected with the first telescopic rod and the second telescopic rod respectively.

[0011] Preferably, a connecting block is fixedly connected to the outside of the fixed clamping plate. A rotating shaft is fixedly connected to the outside of the triangular fixing block. The connecting block and the rotating shaft are rotatably connected.

[0012] Preferably, sliding rails are symmetrically and fixedly connected to the outside of the placing table. First sliding grooves are symmetrically provided on the outside of the base. The sliding rails and the first sliding grooves are slidably connected. Steel balls for reducing frictional resistance are arranged inside the first sliding grooves.

[0013] Preferably, a connecting rod is fixedly connected to the outside of the placing table. A second cylinder is fixedly connected inside the base. A limiting plate is provided at the output end of the second cylinder. A limiting groove is provided on the outside of the connecting rod. The limiting plate and the limiting groove are slidably connected;

[0014] Wherein, a groove is provided on the outside of the base for sliding connection with the connecting rod.

[0015] Preferably, a bottom buffer plate of the ship is fixedly connected to one side of the placing table close to the fixed base. A bow buffer plate is fixedly connected to one side of the placing table close to the bottom buffer plate of the ship;

[0016] Wherein, the bow buffer plate is at the end of the placing table where water enters later (the end close to the connecting rod).

[0017] Preferably, a sixth slide groove and a third slide groove are provided inside the placement table, the second sliding control block is slidingly connected to the sixth slide groove, and the first sliding control block is slidingly connected to the third slide groove.

[0018] Preferably, a buffer shaft is symmetrically fixedly connected to the outside of the placing table, a fourth slide groove is symmetrically opened on the outside of the base, a sliding plate is slidably connected to the fourth slide groove, a first spring is fixedly connected to the outside of the sliding plate, a side of the first spring away from the sliding plate is fixedly connected to the base, and the buffer shaft is slidably connected to the fourth slide groove.

[0019] Preferably, a fifth sliding groove is symmetrically opened inside the placement table, a control shaft is slidably connected to the outside of the fifth sliding groove, a second spring is fixedly connected to the outside of the control shaft, the second spring is fixedly connected to the placement table on the side away from the control shaft, and a control groove is symmetrically opened outside the first sliding control block, and the control shaft and the control groove match each other.

[0020] A method for launching a ship comprises the following steps:

[0021] Step 1: Place the hull to be launched on the platform, and use the bottom buffer plate and the bow buffer plate to prevent the hull from being damaged;

[0022] Step 2: Start the first cylinder to move the triangular fixing block upward. The triangular fixing block moves upward, and the first telescopic rod, the second telescopic rod, the fixing clamping plate, the connecting block and the rotating shaft are used in coordination to adjust the angle of the fixing clamping plate, so that the hulls of different specifications can be fixed and stabilized.

[0023] Step 3: When launching is required, the second cylinder is activated to move the limit plate downward to shrink, and the placing platform is no longer restricted by the connecting rod. The placing platform slides inside the first slide groove through the slide rail under the influence of its own gravity and the gravity of the ship. Steel balls are arranged inside the first slide groove. By using the steel balls to replace the launching grease, the sliding friction is changed to rolling friction, thereby further reducing the friction resistance between the slide rail and the first slide groove, so that the ship is pushed into the water under the influence of gravity. After entering the water, the ship is separated from the placing platform to complete the launching;

[0024] Step 4: The placement table continues to slide under the influence of inertia and passes through the fixed control block on the base. When the placement table passes through the fixed control block, the first sliding control block is squeezed. The first sliding control block moves through the cooperation of the control groove and the second spring to realize the separation of the control shaft from the first sliding control block. The first sliding control block moves through the cooperation of the second sliding control block, the inclined groove, the third spring and the sixth sliding groove to realize the downward movement of the thread groove and thus achieve full meshing with the worm.

[0025] Step 5: Start the motor to rotate the worm, and drive the placement table to move and reset as a whole through the cooperation between the worm and the thread groove. After the placement table is reset, start the second cylinder to limit and fix the placement table through the cooperation of the limit plate, the limit groove and the connecting rod.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, when in use, during shipbuilding, the hull is placed on the bottom buffer plate and the bow buffer plate, and the hull is prevented from being worn by the bottom buffer plate and the bow buffer plate, and the hull is supported by the placement platform, and the hull is limited and fixed under the action of the connecting rod and the limit plate, so that the hull will not slide out. When it is necessary to launch, the limit plate is moved downward and contracted by starting the second cylinder, so that the limit plate is separated from the inside of the limit groove, and the placement platform is no longer restricted by the connecting rod. The placement platform slides in the first slide groove through the slide rail under the influence of its own gravity and the gravity of the hull. Steel balls are arranged in the first slide groove. By using steel balls instead of launching grease, sliding friction is changed to rolling friction, thereby further reducing the friction resistance between the slide rail and the first slide groove, and then the ship is pushed into the water, effectively solving the problem of inconvenient ship movement, and having good performance.

[0028] 2. In the present invention, when in use, after the placement table slides to a certain position, it will pass through the fixed control block on the base. When the placement table passes through the fixed control block, the fixed control block will squeeze the first sliding control block inside the placement table. After the first sliding control block slides, it will squeeze the control shaft so that the control shaft disengages from the control groove so that the control shaft no longer restricts the first sliding control block. During the sliding process, the first sliding control block will gradually be inserted into the inclined groove on the second sliding control block. The second sliding control block will be affected by the first sliding control block and slide downward inside the sixth sliding groove, thereby causing the thread groove on the second sliding control block to mesh with the worm. The second sliding control block will stretch the third spring during the movement. When the thread groove is fully engaged with the worm, the first sliding control block completely passes through the control shaft. The first sliding control block no longer restricts and squeezes the control shaft. The control shaft rebounds under the action of the second spring to restrict the first sliding control block so that the first sliding control block cannot slide in the opposite direction. The motor is started to rotate the worm, driving the placement table to move as a whole and thus resetting the placement table. After the placement table is reset, the second cylinder is started to jam the placement table, thereby realizing the repeated use of the placement table, reducing the labor burden of the operator and improving work efficiency.

[0029] 3. In the present invention, during use, when manufacturing or repairing ships of different specifications, first place the hull on the placement table, and then start the first cylinder. The first cylinder drives the triangular fixing block to move until the fixing clamp contacts the fixed position of the hull. When there are uneven protrusions and depressions on both sides of the fixed position, after the fixing clamp contacts it, the contact surfaces of the fixing clamp are different, and the resistance forces generated on the first cylinder are different. At this time, the fixing clamp rotates with the connecting block to adjust the angle between the fixing clamp and the connecting block until it is fixed and stable. Thus, it can adapt to different hull sizes simultaneously, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic internal structure diagram of a ship launching device and method proposed by the present invention;

[0031] Figure 2 is a schematic external structure diagram of the whole present invention;

[0032] Figure 3 is a schematic diagram of the first part structure of the present invention;

[0033] Figure 4 is a schematic diagram of the second part structure of the present invention;

[0034] Figure 5 is a schematic diagram of the third part structure of the present invention;

[0035] Figure 6 is a schematic diagram of the fourth part structure of the present invention;

[0036] Figure 7 is a schematic diagram of the fixing device structure in the present invention;

[0037] Figure 8 is a schematic diagram of the southern structure of the fixing device in the present invention;

[0038] Figure 9 is Figure 1 an enlarged schematic diagram of the structure at A in

[0039] Figure 10 is Figure 3 an enlarged schematic diagram of the structure at B in

[0040] Figure 11 is Figure 4 an enlarged schematic diagram of the structure at C in

[0041] Figure 12 is Figure 5 an enlarged schematic diagram of the structure at D in

[0042] Figure 13 is Figure 6 an enlarged schematic diagram of the structure at E in

[0043] In the figure: 1, base; 2, placement table; 3, fixed base; 4, bottom buffer plate of the ship; 5, bow buffer plate; 6, first chute; 7, inclined chute; 8, first cylinder; 9, first telescopic rod; 10, second telescopic rod; 11, fixed clamping plate; 12, triangular fixing block; 13, connecting block; 14, second chute; 15, rotating shaft; 16, connecting rod; 17, limiting groove; 18, limiting plate; 19, second cylinder; 21, steel ball; 22, slide rail; 23, first spring; 24, sliding plate; 25, third chute; 26, fourth chute; 27, buffer shaft; 28, fixed control block; 29, first sliding control block; 30, control groove; 31, control shaft; 32, second spring; 33, fifth chute; 34, worm; 35, motor; 36, second sliding control block; 37, thread groove; 38, third spring; 39, sixth chute. Detailed implementation mode

[0044] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0045] Embodiment 1

[0046] As Figures 1 - 13 shown, a ship launching device and method proposed by the present invention includes a base 1. A placement table 2 is slidably connected to the outside of the base 1. A fixed control block 28 is fixedly connected to the outside of the base 1. A first sliding control block 29 and a second sliding control block 36 are slidably connected to the outside of the placement table 2. A third spring 38 is fixedly connected to the outside of the second sliding control block 36. One side of the third spring 38 away from the second sliding control block 36 is fixedly connected to the placement table 2. A thread groove 37 is provided on the side of the second sliding control block 36 away from the third spring 38. A motor 35 is fixedly connected to the inside of the base 1. A worm 34 is provided at the output end of the motor 35. The worm 34 is threadedly connected to the thread groove 37. An inclined chute 7 is provided on the outside of the second sliding control block 36;

[0047] Slide rails 22 are symmetrically and fixedly connected to the outside of the placement table 2. First chutes 6 are symmetrically provided on the outside of the base 1. The slide rails 22 are slidably connected to the first chutes 6. Steel balls 21 for reducing frictional resistance are provided inside the first chutes 6;

[0048] A connecting rod 16 is fixedly connected to the outside of the placement table 2. A second cylinder 19 is fixedly connected to the inside of the base 1. A limiting plate 18 is provided at the output end of the second cylinder 19. A limiting groove 17 is provided on the outside of the connecting rod 16. The limiting plate 18 is slidably connected to the limiting groove 17. A bottom buffer plate 4 of the ship is fixedly connected to the side of the placement table 2 close to the fixed base 3. A bow buffer plate 5 is fixedly connected to the side of the placement table 2 close to the bottom buffer plate 4 of the ship;

[0049] A sixth slide groove 39 and a third slide groove 25 are provided inside the placement table 2, the second sliding control block 36 is slidably connected to the sixth slide groove 39, the first sliding control block 29 is slidably connected to the third slide groove 25, a fifth slide groove 33 is symmetrically provided inside the placement table 2, a control shaft 31 is slidably connected to the outside of the fifth slide groove 33, a second spring 32 is fixedly connected to the outside of the control shaft 31, a side of the second spring 32 away from the control shaft 31 is fixedly connected to the placement table 2, a control groove 30 is symmetrically provided outside the first sliding control block 29, and the control shaft 31 matches the control groove 30;

[0050] A buffer shaft 27 is symmetrically fixedly connected to the outside of the placement table 2, a fourth slide groove 26 is symmetrically opened on the outside of the base 1, the fourth slide groove 26 is slidably connected to the sliding plate 24, the sliding plate 24 is fixedly connected to the outside of the first spring 23, the side of the first spring 23 away from the sliding plate 24 is fixedly connected to the base 1, and the buffer shaft 27 and the fourth slide groove 26 are slidably connected.

[0051] The working principle of a ship launching device and method based on the first embodiment is that when building a ship, the hull is placed on the bottom buffer plate 4 and the bow buffer plate 5, and the bottom buffer plate 4 and the bow buffer plate 5 are used to prevent the hull from being worn. The hull is supported by the placement platform 2, and the hull is limited and fixed under the action of the connecting rod 16 and the limiting plate 18, so that the hull will not slide out. When launching is required, the limiting plate 18 is moved downward and contracted by starting the second cylinder 19, so that the limiting plate 18 is disengaged from the limiting groove 17, and the placing platform 2 is no longer restricted by the connecting rod 16. The placing platform 2 is moved in the first position through the slide rail 22 under the influence of its own gravity and the gravity of the hull. The ship slides inside the slide groove 6. A steel ball 21 is arranged inside the first slide groove 6. By using the steel ball 21 to replace the water grease, the sliding friction is changed to rolling friction, thereby further reducing the friction resistance between the slide rail 22 and the first slide groove 6, so that the ship is pushed into the water under the influence of gravity. After entering the water, the ship separates from the placement platform 2, and the placement platform 2 continues to slide under the influence of inertia. When it is about to slide to the bottom of the base 1, the buffer shaft 27 arranged on the placement platform 2 contacts the sliding plate 24 and squeezes the sliding plate 24. After the sliding plate 24 is subjected to the force of the buffer shaft 27, it squeezes the first spring 23 and slides inside the fourth slide groove 26, and the placement platform 2 is buffered by the first spring 23.

[0052] After the placement table 2 slides to a certain position, it will pass through the fixed control block 28 on the base 1. When the placement table 2 passes through the fixed control block 28, the fixed control block 28 will squeeze the first sliding control block 29 inside the placement table 2. Under the action of the fixed control block 28, the first sliding control block 29 generates a relative sliding in the third chute 25 in the direction opposite to the movement direction of the placement table 2. After the third chute 25 slides, it will squeeze the control shaft 31, causing the control shaft 31 to slide into the fifth chute 33 and squeeze the second spring 32. During the sliding process of the control shaft 31, it will disengage from the control groove 30, so that the control shaft 31 no longer restricts the first sliding control block 29. During the sliding process of the first sliding control block 29, it will gradually insert into the inclined groove 7 on the second sliding control block 36. Due to the inclined surface shape of the inclined groove 7 and the shape of the first sliding control block 29, the second sliding control block 36 will slide downward in the sixth chute 39 under the influence of the first sliding control block 29, thereby making the thread groove 37 on the second sliding control block 36 engage with the worm 34. During the movement of the second sliding control block 36, it will stretch the third spring 38. When the thread groove 37 is completely engaged with the worm 34, at this time, the first sliding control block 29 completely passes through the control shaft 31, and the first sliding control block 29 no longer restricts and squeezes the control shaft 31. Under the action of the second spring 32, the control shaft 31 rebounds to restrict the first sliding control block 29, making the first sliding control block 29 unable to slide in the reverse direction. The inability of the first sliding control block 29 to slide in the reverse direction makes the second sliding control block 36 unable to reset under the action of the third spring 38, realizing the effective engagement of the worm 34 and the thread groove 37. Start the motor 35 to make the worm 34 rotate, and drive the second sliding control block 36 to move through the engagement between the worm 34 and the thread groove 37. The movement of the second sliding control block 36 drives the overall movement of the placement table 2, thereby making the placement table 2 reset. After the placement table 2 is reset, start the second cylinder 19 to make the limit plate 18 re - clamp the connecting rod 16 through the limit groove 17, thereby realizing the repeated use of the placement table 2, reducing the labor burden of the operator and improving the work efficiency.

[0053] Embodiment 2

[0054] As Figures 1 - 13 shown, a fixing mechanism is provided on the side of the placement table 2 away from the base 1. The fixing mechanism includes a fixed base 3 arranged outside the placement table 2. A first cylinder 8 is fixedly connected to the side of the fixed base 3 away from the placement table 2. A triangular fixing block 12 is arranged at the output end of the first cylinder 8. A fixed clamping plate 11 is rotatably connected to the outside of the triangular fixing block 12;

[0055] The fixing mechanism includes a first telescopic rod 9 arranged outside the fixing base 3. One side of the fixing base 3 close to the first telescopic rod 9 is fixedly connected with a second telescopic rod 10. Second sliding grooves 14 are symmetrically formed outside the fixing clamp 11. The second sliding grooves 14 are slidably connected with the first telescopic rod 9 and the second telescopic rod 10. A connecting block 13 is fixedly connected outside the fixing clamp 11. A rotating shaft 15 is fixedly connected outside the triangular fixing block 12. The connecting block 13 is rotatably connected with the rotating shaft 15.

[0056] In this embodiment, during work, when manufacturing or repairing ships of different specifications, first place the hull on the placing table 2, and then start the first cylinder 8. The first cylinder 8 drives the triangular fixing block 12 to move until the fixing clamp 11 contacts the fixed position of the hull. When there are unevenness on both sides of the fixed position, after the fixing clamp 11 contacts it, the contact surfaces of the fixing clamp 11 are different, and the resistance forces generated on the first cylinder 8 are different. At this time, the fixing clamp 11 rotates with the connecting block 13 to adjust the angle between the fixing clamp 11 and the connecting block 13 until it is fixed and stable. During this process, the first telescopic rod 9 and the second telescopic rod 10 will undergo corresponding telescopic deformations under the action of the fixing clamp 11, and the first telescopic rod 9 and the second telescopic rod 10 slide inside the second sliding grooves 14 on the fixing clamp 11 to increase the supporting force for the fixing clamp 11, so as to adapt to different hull sizes at the same time and improve work efficiency.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A launching device for a ship, comprising a base (1), characterized in that, A placing table (2) is slidably connected to the outside of the base (1). A fixing mechanism is arranged on the side of the placing table (2) away from the base (1). The fixing mechanism includes a fixing base (3) arranged on the outside of the placing table (2). A first air cylinder (8) is fixedly connected to the side of the fixing base (3) away from the placing table (2). A triangular fixing block (12) is arranged at the output end of the first air cylinder (8). A fixing clamping plate (11) is rotatably connected to the outside of the triangular fixing block (12). A fixing control block (28) is fixedly connected to the outside of the base (1). A first sliding control block (29) and a second sliding control block (36) are slidably connected to the outside of the placing table (2). A third spring (38) is fixedly connected to the outside of the second sliding control block (36). One side of the third spring (38) away from the second sliding control block (36) is fixedly connected to the placing table (2). A threaded groove (37) is formed on the side of the second sliding control block (36) away from the third spring (38). A motor (35) is fixedly connected to the inside of the base (1). A worm (34) is arranged at the output end of the motor (35). The worm (34) is in threaded connection with the threaded groove (37). An inclined groove (7) is formed on the outside of the second sliding control block (36).

2. The launching device for a ship according to claim 1, characterized in that, The fixing mechanism includes a first telescopic rod (9) arranged on the outside of the fixing base (3). A second telescopic rod (10) is fixedly connected to the side of the fixing base (3) close to the first telescopic rod (9). Second sliding grooves (14) are symmetrically formed on the outside of the fixing clamping plate (11). The second sliding grooves (14) are slidably connected to the first telescopic rod (9). The second sliding grooves (14) are slidably connected to the second telescopic rod (10).

3. The launching device for a ship according to claim 1, characterized in that, A connecting block (13) is fixedly connected to the outside of the fixing clamping plate (11). A rotating shaft (15) is fixedly connected to the outside of the triangular fixing block (12). The connecting block (13) is rotatably connected to the rotating shaft (15).

4. The launching device for a ship according to claim 1, characterized in that, Sliding rails (22) are symmetrically fixedly connected to the outside of the placing table (2). First sliding grooves (6) are symmetrically formed on the outside of the base (1). The sliding rails (22) are slidably connected to the first sliding grooves (6). Steel balls (21) for reducing frictional resistance are arranged inside the first sliding grooves (6).

5. The launching device for a ship according to claim 1, characterized in that, A connecting rod (16) is fixedly connected to the outside of the placing table (2). A second air cylinder (19) is fixedly connected to the inside of the base (1). A limiting plate (18) is arranged at the output end of the second air cylinder (19). A limiting groove (17) is formed on the outside of the connecting rod (16). The limiting plate (18) is slidably connected to the limiting groove (17).

6. The launching device for a ship according to claim 1, characterized in that, A bottom buffer plate (4) is fixedly connected to the side of the placing table (2) close to the fixing base (3). A bow buffer plate (5) is fixedly connected to the side of the placing table (2) close to the bottom buffer plate (4).

7. The launching device for a ship according to claim 1, characterized in that, A sixth slide groove (39) and a third slide groove (25) are provided inside the placement table (2); the second sliding control block (36) is slidably connected to the sixth slide groove (39); and the first sliding control block (29) is slidably connected to the third slide groove (25).

8. The launching device for a ship according to claim 1, characterized in that, The placement table (2) is symmetrically and fixedly connected to the outside with a buffer shaft (27), the base (1) is symmetrically provided with a fourth slide groove (26), the fourth slide groove (26) is slidably connected to a sliding plate (24), the sliding plate (24) is fixedly connected to the outside with a first spring (23), the first spring (23) is fixedly connected to the base (1) at a side away from the sliding plate (24), and the buffer shaft (27) is slidably connected to the fourth slide groove (26).

9. The launching device for a ship according to claim 1, characterized in that, A fifth sliding groove (33) is symmetrically provided inside the placement table (2); a control shaft (31) is slidably connected to the outside of the fifth sliding groove (33); a second spring (32) is fixedly connected to the outside of the control shaft (31); a side of the second spring (32) away from the control shaft (31) is fixedly connected to the placement table (2); a control groove (30) is symmetrically provided outside the first sliding control block (29); the control shaft (31) and the control groove (30) match each other.

10. A ship launching method for a ship launching device according to any one of claims 1-9, characterized in that, The following steps are involved: Step 1: Place the hull to be launched onto the placement platform (2), and use the bottom buffer plate (4) and the bow buffer plate (5) to prevent the hull from being damaged; Step 2: starting the first cylinder (8) to move the triangular fixing block (12) upwards. The triangular fixing block (12) moves upwards, and the first telescopic rod (9), the second telescopic rod (10), the fixing clamp (11), the connecting block (13) and the rotating shaft (15) are used in coordination to adjust the angle of the fixing clamp (11), so that the fixing clamp (11) can fix and stabilize the hulls of different specifications. Step 3: When launching is required, the second cylinder (19) is activated to move the limit plate (18) downward to retract, and the placing platform (2) is no longer restricted by the connecting rod (16). The placing platform (2) slides inside the first slide groove (6) through the slide rail (22) under the influence of its own gravity and the gravity of the ship. A steel ball (21) is arranged inside the first slide groove (6). By using the steel ball (21) to replace the launching grease, the sliding friction is changed to rolling friction, thereby further reducing the friction resistance between the slide rail (22) and the first slide groove (6), so that the ship is pushed into the water under the influence of gravity. After entering the water, the ship is separated from the placing platform (2) to complete the launching; Step Four: The placing table (2) continues to slide under the influence of inertia and passes through the fixed control block (28) on the base (1). When the placing table (2) passes through the fixed control block (28), it squeezes the first sliding control block (29). When the first sliding control block (29) moves, through the cooperation of the control groove (30) and the second spring (32), the control shaft (31) disengages from the first sliding control block (29). The first sliding control block (29) moves through the cooperation of the second sliding control block (36), the inclined groove (7), the third spring (38) and the sixth chute (39) to make the threaded groove (37) move downward and then fully engage with the worm (34). Step Five: Start the motor (35) to rotate the worm (34). Through the cooperation between the worm (34) and the threaded groove (37), drive the whole placing table (2) to move back to its original position. After the placing table (2) is reset, start the second cylinder (19). Through the cooperation of the limiting plate (18), the limiting groove (17) and the connecting rod (16), limit and fix the placing table (2).

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