A trackless ship moon pool mechanism

Abstract

The present invention discloses a trackless ship moon pool mechanism, comprising a moon pool enclosure, a lifting device and a pulley, wherein a moon pool channel is formed in the moon pool enclosure, a moon pool ceiling is arranged above the moon pool channel, the lifting device is installed on the moon pool ceiling, and the pulley is lifted and lowered in the moon pool channel by the lifting device; the pulley comprises a frame and guide members arranged circumferentially around the frame, and the guide members respectively abut against the inner wall of the moon pool channel to guide the pulley to stably lift and lower in the moon pool channel. This scheme omits the track structure on the basis of ensuring stable lifting, which can avoid the problem of the track occupying the internal space of the moon pool channel, and at the same time can avoid the track interfering with the opening and closing of the moon pool hatch cover, and there is no need to open a gap on the moon pool hatch cover to avoid the track, and the moon pool channel can be completely closed after the moon pool hatch cover is closed.

Description

Technical Field

[0001] The present application relates to the field of ship technology, and in particular to a trackless ship moon pool mechanism. Background Art

[0002] The moon pool of a ship is mainly used in the field of marine engineering. It is a general term for a structure that runs from the water surface to the water body and penetrates the floating structure. The moon pool runs through all decks and is connected to the seawater, creating a more stable microenvironment than the surrounding environment of the floating body in the harsh marine environment. Scientific research equipment or other underwater equipment can be transported directly below the sea level through a set of pulley systems equipped on the moon pool, avoiding waves or ice, so as to realize various operational functions of the equipment underwater.

[0003] When the moon pool of a traditional ship is used to retract or release equipment, the equipment is lifted and transported through the pulley system of the moon pool. Figure 1 In order to ensure the stability of the lifting of the pulley and avoid swaying during the lifting process, which may cause the equipment to hit the moon pool wall, it is necessary to arrange a track in the moon pool wall to guide the lifting and lowering of the pulley. However, the setting of the track will occupy the internal space of the moon pool wall, hindering the lifting of large-sized underwater equipment. In addition, a moon pool hatch cover is generally set on the top of the moon pool wall. The track needs to pass through the moon pool hatch cover and extend above the deck. Therefore, in order to avoid the track, it is necessary to open a corresponding avoidance gap in the moon pool hatch cover, resulting in the problem that the moon pool cannot be completely closed when the moon pool hatch cover is closed. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a trackless ship moon pool mechanism that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] A trackless ship moon pool mechanism comprises a moon pool enclosure, a lifting device and a pulley, wherein a moon pool channel is formed in the moon pool enclosure, a moon pool ceiling is arranged above the moon pool channel, the lifting device is installed on the moon pool ceiling, and the pulley is lifted and lowered in the moon pool channel by the lifting device; the pulley comprises a frame and guide members circumferentially arranged around the frame, the guide members respectively abut against the inner wall of the moon pool channel to guide the pulley to stably rise and fall in the moon pool channel.

[0007] Optionally, the guide member includes a connecting rod and a pulley set, one end of the connecting rod is connected to the frame, and the other end is connected to the pulley set, and the pulley set is used to contact the moon pool wall.

[0008] Optionally, the pulley block includes a pulley foot and a plurality of pulleys, wherein the pulley foot is mounted on an end of the connecting rod away from the frame, and the pulley foot has a plurality of legs, and each leg is mounted with a pulley at the end away from the connecting rod.

[0009] Optionally, the connecting rod is an elastic telescopic rod.

[0010] Optionally, the connecting rod includes a sleeve, a spring and a telescopic rod, one end of the sleeve is connected to the frame, one end of the telescopic rod is connected to the pulley group, the spring is arranged in the sleeve, and the telescopic rod extends into the sleeve and abuts against the spring.

[0011] Optionally, a positioning protrusion is provided on the inner wall of the moon pool wall, and a locking structure is provided on the connecting rod, and the locking structure is used to lock the telescopic rod to limit the telescopic movement of the telescopic rod relative to the sleeve, so that the pulley block cannot pass over the positioning protrusion.

[0012] Optionally, the locking structure includes a rack groove, a gear and a lock, the rack groove is arranged on the side of the telescopic rod, the gear is rotatably installed on the sleeve, the gear is engaged with the rack groove, and the gear is driven to rotate by the telescopic movement of the telescopic rod; the lock has an unlocked state and a locked state, in the unlocked state the lock is disengaged from the gear, and in the locked state the lock locks the gear, thereby limiting the telescopic movement of the telescopic rod relative to the sleeve.

[0013] Optionally, a mounting hole is provided on one side of the sleeve, the lock is fixedly mounted on a position of the outer wall of the sleeve close to the mounting hole, and the gear is rotatably mounted in the mounting hole.

[0014] Optionally, the lock is an electromagnet.

[0015] Optionally, an inflatable airbag is provided on the bottom side of the pulley. When the pulley descends to the bottom of the moon pool channel, the airbag is inflated to expand and cover the bottom of the moon pool wall, so as to prevent underwater equipment from directly hitting the bottom of the ship.

[0016] The beneficial effects of the present application are as follows: the present invention provides a trackless ship moon pool mechanism, in which there is no need to set a track for guiding the pulley in the moon pool enclosure wall, and a guide member that can abut against the moon pool enclosure wall is directly set around the pulley, so as to avoid the pulley shaking in the moon pool enclosure wall and causing the suspended underwater equipment to hit the moon pool enclosure wall. Therefore, the present solution omits the track structure on the basis of ensuring the stability of lifting, and can avoid the problem of the track occupying the internal space of the moon pool channel, and at the same time can avoid the track from interfering with the opening and closing of the moon pool hatch cover, and there is no need to open a gap on the moon pool hatch cover to avoid the track, and the moon pool channel can be completely closed after closing the moon pool hatch cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application is further described in detail below based on the drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of a ship moon pool mechanism with tracks in the prior art;

[0019] Figure 2 This is one of the schematic diagrams of the trackless ship moon pool mechanism described in the embodiment of the present application;

[0020] Figure 3 This is the second schematic diagram of the trackless ship moon pool mechanism described in the embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the structure of the pulley described in the embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the structure of the guide member described in the embodiment of the present application;

[0023] Figure 6 This is an exploded schematic diagram of the guide member described in the embodiment of the present application;

[0024] Figure 7 for Figure 6 A magnified schematic diagram of the middle A area;

[0025] Figure 8 This is a cross-sectional view of the connecting rod described in the embodiment of the present application.

[0026] In the figure:

[0027] 1. Moon pool wall; 11. Moon pool passage; 12. Moon pool ceiling; 13. Moon pool hatch cover; 14. Positioning protrusion; 2. Pulley; 21. Frame; 22. Guide member; 221. Connecting rod; 2211. Sleeve; 22111. Mounting hole; 2212. Telescopic rod; 2213. Spring; 222. Pulley block; 2221. Pulley foot; 2222. Pulley; 223. Locking structure; 2231. Locker; 22311. Tab; 2232. Gear; 2233. Rack groove; 24. Airbag; 3. Lifting device; 4. Underwater equipment. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0029] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] Reference Figure 1 In the traditional moon pool mechanism of a ship, in order to ensure the stability of the lifting of the pulley and avoid swaying during the lifting process, which may cause the equipment to hit the moon pool wall, it is necessary to arrange a track longitudinally inside the moon pool wall to guide the lifting and lowering movement of the pulley. However, the setting of the track will occupy the internal space of the moon pool wall, hindering the lifting of large-sized underwater equipment. In addition, a moon pool hatch cover is generally set on the top of the moon pool wall, and the track needs to pass through the moon pool hatch cover and extend above the deck. Therefore, in order to avoid the track, it is necessary to open a corresponding avoidance gap in the moon pool hatch cover, resulting in the problem that the moon pool cannot be completely closed when the moon pool hatch cover is closed.

[0032] In order to solve the above problems, Figure 2-3 As shown, the present embodiment provides a trackless ship moonpool mechanism, comprising a moonpool enclosure 1, a lifting device 3 and a pulley 2, wherein a moonpool channel 11 is formed in the moonpool enclosure 1, a moonpool ceiling 12 is provided above the moonpool channel 11, the lifting device 3 is installed on the moonpool ceiling 12, and the pulley 2 is lifted and lowered in the moonpool channel 11 by the lifting device 3; the pulley 2 comprises a frame 21 and guide members 22 circumferentially arranged around the frame 21, the guide members 22 respectively abut against the inner walls of the moonpool channel 11 to guide the pulley 2 to stably rise and fall in the moonpool channel 11.

[0033] Among them, a guide joint for fixing the underwater equipment 4 is provided at the bottom of the frame 21 of the pulley 2. When the underwater equipment 4 needs to be lowered, the underwater equipment 4 is transferred to the moon pool hatch cover 13, and the pulley 2 is lowered a certain distance based on the lifting device 3 so that the underwater equipment 4 can dock with the guide joint; then the lifting device 3 is started to pull the pulley 2 upward to make the underwater equipment 4 leave the moon pool hatch cover 13; then the moon pool hatch cover is opened, and the lifting device 3 is started to lower the pulley 2, and the underwater equipment 4 is gradually placed into the water through the moon pool channel 11.

[0034] The moon pool enclosure 1 of this solution does not have a track for limiting the lifting and lowering of the guide pulley 2. Therefore, in order to avoid the problem that the underwater equipment 4 hits the moon pool enclosure 1 due to shaking during the lifting process, the solution sets guide components 22 around the pulley 2 that can abut the moon pool enclosure 1 from all directions. That is, under the limiting effect of the guide components 22, the pulley 2 can be prevented from shaking horizontally relative to the moon pool enclosure 1 during the lifting process, thereby avoiding the possibility that the water tank equipment 4 fixed at the bottom of the pulley 2 hits the moon pool enclosure 1. Since the pulley 2 will be separated from the moon pool enclosure 1 after being lifted, in order to facilitate the pulley 2 to accurately fall into the range of the moon pool enclosure 1 when lowering, the top of the moon pool enclosure 1 can be made into a trumpet shape, and the guiding effect of the trumpet can be used to smoothly guide the pulley 2 into the moon pool channel 11.

[0035] Based on the above trackless ship moon pool mechanism, there is no need to set a track for guiding the pulley 2 in the moon pool enclosure 1. Directly set a guide member 22 that can abut the moon pool enclosure 1 around the pulley 2, so as to avoid the pulley 2 shaking in the moon pool enclosure 1 and causing the suspended underwater equipment 4 to hit the moon pool enclosure 1. Therefore, this solution omits the track structure on the basis of ensuring the stability of lifting, and can avoid the problem of the track occupying the internal space of the moon pool channel 11. At the same time, it can avoid the track from interfering with the opening and closing of the moon pool hatch 13. There is no need to open a gap on the moon pool hatch 13 to avoid the track. After closing the moon pool hatch 13, the moon pool channel 11 can be completely closed.

[0036] Regarding the structure of the guide member 22, in one embodiment, the guide member 22 includes a connecting rod 221 and a pulley block 222, one end of the connecting rod 221 is connected to the frame 21, and the other end is connected to the pulley block 222, and the pulley block 222 is used to contact the moon pool wall 1.

[0037] A pulley block 222 is provided at the end of the guide member 22. After the pulley 2 is lowered into the moon pool passage 11, the pulley block 222 will contact the moon pool wall 1. During the lifting and lowering of the pulley 2, the pulley block 222 will roll along the surface of the moon pool wall 1, that is, the friction mode between the pulley 2 and the surface of the moon pool wall 1 is rolling friction, which has small friction resistance and can reduce the wear of the contact surface between the pulley 2 and the moon pool wall 1, thereby ensuring the tightness of the contact between the guide member 22 and the moon pool wall 1.

[0038] Regarding the structure of the pulley block 222, in one embodiment, refer to Figure 5 The pulley block 222 includes a pulley foot 2221 and a plurality of pulleys 2222. The pulley foot 2221 is installed at one end of the connecting rod 221 away from the frame 21. The pulley foot 2221 has a plurality of legs, and a pulley 2222 is installed at the end of each leg away from the connecting rod 221.

[0039] A plurality of pulleys 2222 are installed on the pulley foot 2221 of each pulley block 222. Each pulley block 222 makes multi-point contact with the moon pool wall 1, which can effectively improve the contact stability between the pulley block 222 and the moon pool wall 1, thereby avoiding the left and right tilting of the pulley 2 during the lifting process.

[0040] Regarding the structure of the connecting rod 221, in one embodiment, the connecting rod 221 is an elastic telescopic rod.

[0041] The connecting rod 221 is configured as an elastic telescopic rod. When the hull shakes, the elastic telescopic ability of the connecting rod 221 can buffer the shaking amplitude of the pulley 2, thereby reducing the shaking of the underwater equipment 4.

[0042] In addition, the elastic expansion and contraction ability of the connecting rod 221 can absorb the dimensional errors of the moon pool wall 1 and the pulley 2 during processing, so that the assembled pulley 2222 can always be close to the surface of the moon pool wall 1, avoiding the situation where the pulleys 2222 on all sides cannot contact the moon pool wall 1 at the same time, thereby providing stable guidance for the lifting and lowering of the pulley 2.

[0043] As a preferred embodiment, refer to Figure 5-6 The connecting rod 221 includes a sleeve 2211, a spring 2213 and a telescopic rod 2212. One end of the sleeve 2211 is connected to the frame 21, and one end of the telescopic rod 2212 is connected to the pulley block 222. The spring 2213 is arranged in the sleeve 2211, and the telescopic rod 2212 extends into the sleeve 2211 and abuts against the spring 2213.

[0044] The combination of the sleeve 2211 and the telescopic rod 2212 can ensure that the connecting rod 221 has sufficient rigidity. At the same time, the built-in spring 2213 can provide elastic thrust for the telescopic rod 2212, so that the telescopic rod 2212 can always give the pulley block 222 an outward thrust.

[0045] The pulley 2 is lifted and lowered by suspension. The downward freedom of the pulley 2 is limited by the cable, and the upward freedom is limited by its own gravity. That is, when an upward external force greater than the weight of the pulley 2 acts on the pulley 2, the pulley 2 will be pushed to move upward. After the pulley 2 enters the water, it is easily affected by the fluctuating water, and when the underwater equipment 4 moves upward to dock with the guide joint, it is easy to push the pulley 2 upward, which leads to the problem of instability of the pulley 2 and difficulty in docking.

[0046] In order to solve the above problem, in one embodiment, a positioning protrusion 14 is provided on the inner wall of the moon pool wall 1, and a locking structure 223 is provided on the connecting rod 221. The locking structure 223 is used to lock the telescopic rod 2212 to limit the telescopic movement of the telescopic rod 2212 relative to the sleeve 2211, so that the pulley set 222 cannot pass over the positioning protrusion 14.

[0047] Specifically, the positioning protrusion 14 is annularly arranged at a position near the bottom of the moon pool wall 1. Specifically, when the pulley 2 is lowered to the lowest position, the top of the pulley 2222 can just abut against the lower side of the positioning protrusion 14. When the pulley 2 is lowered, the locking structure 223 is in a loosened state, and the telescopic rod 2212 can be retracted relative to the sleeve 2211. When encountering the positioning protrusion 14, the pulley 2222 can smoothly pass over the positioning protrusion 14 through the retraction of the telescopic rod 2212; after passing over the positioning protrusion 14, the locking structure 223 locks the telescopic rod 2212, at which time the telescopic rod 2212 cannot be retracted relative to the sleeve 2211, and the pulley 2222 cannot move upward over the positioning protrusion 14. When the pulley 2 needs to be lifted, it is only necessary to unlock the locking structure 223 again, and the pulley 2222 can pass over the positioning protrusion 14 based on the retraction of the telescopic rod 2212, so that the recovery function of the underwater equipment 4 can be realized.

[0048] Therefore, based on the structure of the present solution, after the underwater equipment 4 is lowered into place, the rise of the pulley 2 can be limited by utilizing the cooperation of the locking structure 223 and the positioning protrusion 14 in the moon pool wall 1, and then the suspension of the cable can be used to limit the downward movement of the pulley 2, thereby fixing the pulley 2 at this height; thus avoiding the problem of difficulty in docking the underwater equipment 4 with the guide joint due to the instability of the pulley 2 when recovering the underwater equipment 4.

[0049] Regarding the locking structure 223, in one embodiment, the locking structure 223 includes a rack groove 2233, a gear 2232 and a locker 2231, the rack groove 2233 is arranged on the side of the telescopic rod 2212, the gear 2232 is rotatably installed on the sleeve 2211, the gear 2232 is engaged with the rack groove 2233, and the gear 2232 is pushed to rotate by the telescopic movement of the telescopic rod 2212; the locker 2231 has an unlocked state and a locked state, in the unlocked state the locker 2231 is disengaged from the gear 2232, and in the locked state the locker 2231 locks the gear 2232, thereby limiting the telescopic movement of the telescopic rod 2212 relative to the sleeve 2211.

[0050] When the telescopic rod 2212 is extended and retracted relative to the sleeve 2211 , the rack groove 2233 on the telescopic rod 2212 will push the gear 2232 to rotate. Conversely, as long as the rotation of the gear 2232 is restricted, the extension and retraction of the telescopic rod 2212 can be restricted.

[0051] Theoretically, the telescopic range of the telescopic rod 2212 of the present scheme is the same as the length of the rack groove 2233. At the same time, no matter where the meshing position of the gear 2232 and the rack groove 2233 is, as long as the gear 2232 is locked, the telescopic rod 2212 can be locked at this length. Therefore, within the telescopic range of the telescopic rod 2212, the locking structure 223 provided by the present scheme can lock the telescopic rod 2212 at any extended length, compensate for the processing error of the moon pool wall 1, and enable the locked pulley 2222 to be maintained within the limit range of the positioning protrusion 14.

[0052] In addition, based on the arbitrary locking of the locking structure 223, in the process of lifting the pulley 2, when the pulley 2 approaches the opening at the upper end of the moon pool channel 11 and the pulley group 222 has not broken away from the contact with the moon pool wall 1, the locking structure 223 can be locked first, and after the pulley 2 is pulled out of the moon pool channel 11, the telescopic rod 2212 will not continue to pop out; when the pulley 2 is lowered next time, the extended length of the telescopic rod 2212 basically matches the width of the moon pool channel 11, avoiding the problem of the telescopic rod 2212 extending too long and being difficult to enter the moon pool channel 11.

[0053] To achieve the installation of the gear 2232, in one embodiment, refer to Figure 7 A mounting hole 22111 is provided on one side of the sleeve 2211 , the locker 2231 is fixedly installed on the outer wall of the sleeve 2211 near the mounting hole 22111 , and the gear 2232 is rotatably installed in the mounting hole 22111 .

[0054] The gear 2232 is rotatably installed in the mounting hole 22111. The part protruding inward from the inner wall of the sleeve 2211 engages with the rack groove 2233, and the part protruding outward from the outer wall of the sleeve 2211 is used to cooperate with the lock 2231. When the lock 2231 is stuck in the tooth groove of the gear 2232, the rotation of the gear 2232 can be limited.

[0055] As a preferred embodiment, the locker 2231 is an electromagnet.

[0056] The electromagnet can output linear reciprocating motion, and its structure is simple and reliable, which can meet the use requirements of this solution. Figure 7 A latch 22311 is provided at the end of the telescopic shaft of the lock 2231. When the telescopic shaft pops out, the latch 22311 is engaged in the tooth groove of the gear 2232 to achieve locking; when the telescopic shaft retracts, the latch 22311 is disengaged from the tooth groove, and the gear 2232 resumes free rotation.

[0057] In specific applications, in order to achieve driving, the electromagnet needs to be equipped with a battery; in order to achieve remote control of the electromagnet, the electromagnet is equipped with a control board with wireless transceiver function, and the staff can remotely control the power on and off of the electromagnet. In order to avoid being affected by seawater, it is necessary to apply waterproof measures to the electrical components and circuits, which can also be foreseen and implemented by those skilled in the art, and will not be repeated here.

[0058] When a traditional ship moonpool is performing a retracting and releasing operation on an underwater device 4 that needs to be retracted and released, the underwater device is retracted and released at the bottom of the ship through a guide joint. Because the moonpool pulley 2 is within the moonpool enclosure 1 and the travel of the pulley 2 is limited, the underwater device 4 cannot be transported to a position far away from the bottom of the ship. After the underwater device 4 is released, it is too close to the bottom of the ship, and there is a risk of collision between the device and the bottom of the ship, resulting in damage to the device.

[0059] To this end, combined Figure 2-3 In this solution, an inflatable airbag 24 is provided on the bottom side of the pulley 2. When the pulley 2 descends to the bottom of the moon pool channel 11, the airbag 24 is inflated to expand and cover the bottom of the moon pool wall 1, so as to prevent the underwater equipment 4 from directly hitting the bottom of the ship.

[0060] During the lowering of the pulley 2, the airbag 24 is in a deflated and tightened state, and the pulley 2 can move freely up and down in the moon pool wall 1; after the pulley 2 is lowered to the bottom of the moon pool channel 11, before releasing the underwater equipment 4, the airbag 24 is first inflated to expand the airbag 24, and the airbag 24 can cover the area of ​​the bottom of the ship near the moon pool wall 1. When a collision occurs, the underwater equipment 4 will directly contact the airbag 24, and the flexible collision between the underwater equipment 4 and the airbag 24 can effectively avoid the impact damage of the airbag 24, that is, avoid the problem of the underwater equipment 4 being too close to the bottom of the ship and having a rigid collision with the bottom of the ship. When the pulley 2 needs to be lifted, the airbag 24 is first deflated to tighten it, so that the pulley 2 can be normally lifted and lowered in the moon pool wall 1.

[0061] During the inflation process of the airbag 24, the airbag 24 gradually expands, and the buoyancy generated by the airbag 24 gradually increases. Since the pulley 2 is suspended by a cable, the upward movement freedom of the pulley 2 is not restricted. During the inflation process of the airbag 24, it is easy to push the pulley 2 upward, so that the underwater equipment 4 is closer to the bottom of the ship. At the same time, the airbag 24 cannot be fully deployed below the bottom of the ship to achieve its purpose of buffering impact. For this reason, the locking structure 223 in this solution locks the pulley 2, which can solve the problem of the pulley 2 floating due to the inflation of the airbag 24.

[0062] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0063] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0064] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0065] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A trackless ship moon pool mechanism, characterized in that: The invention comprises a moon pool wall (1), a lifting device (3) and a pulley (2); a moon pool channel (11) is formed in the moon pool wall (1); a moon pool ceiling (12) is arranged above the moon pool channel (11); the lifting device (3) is installed on the moon pool ceiling (12); the pulley (2) is lifted and lowered in the moon pool channel (11) by the lifting device (3); the pulley (2) comprises a frame (21) and guide members (22) arranged circumferentially around the frame (21); the guide members (22) respectively abut against the inner wall of the moon pool channel (11) to guide the pulley (2) to stably rise and fall in the moon pool channel (11); The guide member (22) comprises a connecting rod (221) and a pulley block (222); one end of the connecting rod (221) is connected to the vehicle frame (21), and the other end is connected to the pulley block (222); the pulley block (222) is used to contact the moon pool wall (1); The connecting rod (221) is an elastic telescopic rod; the connecting rod (221) comprises a sleeve (2211), a spring (2213) and a telescopic rod (2212); one end of the sleeve (2211) is connected to the vehicle frame (21); one end of the telescopic rod (2212) is connected to the pulley block (222); the spring (2213) is arranged in the sleeve (2211); the telescopic rod (2212) extends into the sleeve (2211) and abuts against the spring (2213); The inner wall of the moon pool wall (1) is provided with a positioning protrusion (14), and the connecting rod (221) is provided with a locking structure (223), and the locking structure (223) is used to lock the telescopic rod (2212) to limit the telescopic movement of the telescopic rod (2212) relative to the sleeve (2211), so that the pulley block (222) cannot pass over the positioning protrusion (14); the positioning protrusion (14) is arranged in an annular shape at a position close to the bottom of the moon pool wall (1), and the pulley block (222) includes a pulley foot (2221) and a plurality of pulleys (2222), and when the pulley (2) descends to the lowest position, the top of the pulley (2222) can just abut against the lower side of the positioning protrusion (14).

2. The trackless ship moon pool mechanism according to claim 1, characterized in that: The pulley foot (2221) is installed at one end of the connecting rod (221) away from the vehicle frame (21), and the pulley foot (2221) has a plurality of supporting feet, and a pulley (2222) is installed at the end of each supporting foot away from the connecting rod (221).

3. The trackless ship moon pool mechanism according to claim 1, characterized in that: The locking structure (223) comprises a rack groove (2233), a gear (2232) and a locker (2231); the rack groove (2233) is arranged on the side of the telescopic rod (2212); the gear (2232) is rotatably mounted on the sleeve (2211); the gear (2232) is meshed with the rack groove (2233); the gear (2232) is driven to rotate by the telescopic movement of the telescopic rod (2212); the locker (2231) has an unlocked state and a locked state; in the unlocked state, the locker (2231) is disengaged from the gear (2232); in the locked state, the locker (2231) locks the gear (2232), thereby limiting the telescopic movement of the telescopic rod (2212) relative to the sleeve (2211).

4. The trackless ship moon pool mechanism according to claim 3, characterized in that: A mounting hole (22111) is provided on one side of the sleeve (2211), the locking device (2231) is fixedly mounted on a position of the outer wall of the sleeve (2211) close to the mounting hole (22111), and the gear (2232) is rotatably mounted in the mounting hole (22111).

5. The trackless ship moon pool mechanism according to claim 4, characterized in that: The locking device (2231) is an electromagnet.

6. The trackless ship moon pool mechanism according to claim 1, characterized in that: An inflatable and deflable air bag (24) is provided on the bottom side of the pulley (2). When the pulley (2) descends to the bottom of the moon pool channel (11), the air bag (24) is inflated to expand and cover the bottom of the moon pool wall (1), thereby preventing the underwater equipment (4) from directly hitting the bottom of the ship.

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