A lock release device for a buoyancy block

Abstract

The application discloses an unlocking device for a buoyancy block, and belongs to the technical field of unlocking devices. The unlocking device comprises a rack provided with a towline opening for the passage of a towline; an unlocking ram fixed to the rack, wherein a towline channel penetrating through both ends is arranged in the unlocking ram, the towline channel is communicated with the towline opening, and the unlocking ram is matched with a lock core of the buoyancy block; the towline can pass through the towline channel and the towline opening from one side of the rack to the other side of the rack, and the unlocking ram can be inserted into a lock eye of the buoyancy block along the towline. The unlocking device of the application is used for unlocking the buoyancy block, the rack provides support force for the unlocking ram, the towline passes through the unlocking ram, the unlocking ram can be matched with the towline, the impact of the unlocking ram and the lock core can quickly unlock the buoyancy block, the ocean towline and the buoyancy block can be quickly recovered, the take-up speed of the ocean towline is improved, and the construction efficiency of the towline is improved.

Description

Technical Field

[0001] This application belongs to the field of unlocking device technology, and particularly relates to an unlocking device for buoyancy blocks. Background Technology

[0002] Marine towing cables are cables used to tow other vessels or buoys in the ocean, or to be towed by other vessels. During use, to prevent the towing cable from sinking to the seabed and getting scratched by reefs or entangled in fishing nets, its weight needs to be reduced so that most of it floats on the ocean. This is usually achieved by installing buoyancy blocks on the towing cable. The installation and removal of buoyancy blocks are typically done manually. The buoyancy blocks are manually tied / untied according to the specific locations required for installation and removal. Tying methods generally include: first fixing prefabricated components to the towing cable, then connecting the buoyancy blocks to the prefabricated components by binding; or setting screw holes on the buoyancy blocks and using screws to fix the buoyancy blocks to the prefabricated components; or setting grooves on the outer circumference of the buoyancy blocks and using clamps to fix the buoyancy blocks to the prefabricated components.

[0003] The installation and disassembly of this type of buoyancy block requires a large number of workers, is time-consuming, and involves cumbersome procedures, making the deployment and retrieval of towed cables time-consuming and labor-intensive. Therefore, a buoyancy block capable of quickly locking and disassembling towed cables has been invented in China, such as patent CN202210921636.4, which describes a buoyancy block with a quick-locking and unlocking function. However, unlocking such a buoyancy block cannot be done manually. Since the smallest buoyancy block is generally over 40cm in size, its large size requires significant external force to unlock. Currently, there are no suitable unlocking tools available; without them, it is difficult to open, and the operation at sea further complicates the process. Summary of the Invention

[0004] This application aims to solve, at least to some extent, the technical problem of unlocking locking buoyant blocks. To this end, this application provides an unlocking device for buoyant blocks. This device is designed to unlock locking buoyant blocks and can quickly open them to facilitate the rapid recovery of marine towlines and buoyant blocks, thereby increasing the retrieval speed of marine towlines and improving the construction efficiency of towlines.

[0005] This application provides a locking device for a buoyancy block, wherein the buoyancy block is equipped with a lock, and a towing cable can pass through the buoyancy block. The locking device includes:

[0006] The frame is equipped with a cable port for cable to pass through;

[0007] The unlocking impact head is fixed to the frame. The unlocking impact head has a tow cable channel that runs through both ends. The tow cable channel is connected to the tow cable opening. The unlocking impact head matches the lock cylinder of the buoyancy block. The tow cable can pass through the tow cable channel and the tow cable opening from one side of the frame to the other side of the frame. The unlocking impact head can be inserted into the lock hole of the buoyancy block along the tow cable.

[0008] Traditional buoyancy blocks have holes through which tow cables pass and connect to multiple buoyancy blocks. The installation and removal of buoyancy blocks and tow cables is cumbersome, time-consuming, and labor-intensive. The deployment and retrieval of the entire tow cable takes a long time. However, using locking buoyancy blocks can quickly improve the efficiency of installing buoyancy blocks on tow cables and the process is convenient. But there are no corresponding tools to assist in unlocking. This application addresses the unlocking of locking buoyancy blocks. A frame provides support for the unlocking striker, and a tow cable passes through it. The unlocking striker engages with the tow cable. During tow cable retrieval, the buoyancy block moves with the tow cable. When it reaches the unlocking striker, the striker moves relative to the buoyancy block along the outer periphery of the tow cable. Due to the gap between the tow cable and the buoyancy block, the unlocking striker forms a sleeve connection with the tow cable inside. As the tow cable is continuously retrievaled, the tow cable continuously passes through the unlocking striker, which inserts into the gap and then into the lock hole of the buoyancy block. The impact of the unlocking striker against the lock cylinder quickly unlocks the buoyancy block, facilitating rapid recovery of the marine tow cable and buoyancy block, increasing the tow cable retrieval speed, and thus improving the efficiency of tow cable operations.

[0009] In an optional embodiment, the unlocking impact head includes an insertion post, which is divided into multiple spliced ​​structures along the circumference. The splicing lines of adjacent spliced ​​structures extend along both ends of the insertion post, and the tow cable channel is arranged from one end of the insertion post to the other.

[0010] In an optional embodiment, the unlocking bumper also includes a mating end, which is connected to the cantilever end of the insertion post. The mating end matches the lock cylinder of the buoyancy block, or the mating end and the insertion post together match the lock cylinder of the buoyancy block.

[0011] In an optional embodiment, the unlocking impact head also includes multiple reinforcing ribs, which are arranged in a ring around the unlocking impact head and are positioned and supported at the connection between the unlocking impact head and the frame.

[0012] In an optional embodiment, the unlocking device further includes a guide roller assembly comprising a plurality of guide rollers rotatable relative to the frame and located at the cable port. The guide rollers are used to guide the cable as it passes through the cable port.

[0013] In an optional embodiment, the frame is provided with a conveying channel that connects both sides of the frame, allowing the buoyancy block to pass through the conveying channel after being unlocked by the unlocking bumper.

[0014] In an optional embodiment, the unlocking device further includes a roller assembly connected to the frame, the roller assembly being located within the conveying channel, the roller assembly having multiple rollers for guiding the buoyancy block as it passes.

[0015] In an alternative embodiment, the frame includes a mounting base with a mounting plate, and the unlocking bumper is fixed to the mounting plate.

[0016] In an optional embodiment, the mounting base also includes longitudinal beams and transverse beams, which are connected to form a frame structure, and the mounting plate is fixed to the frame structure.

[0017] In an optional embodiment, the frame also includes a base and multiple support columns, some of which are connected to the base to form a triangular structure, and the triangular structure is fixedly connected to the frame structure.

[0018] As can be seen from the above technical solution, the beneficial effects of this application are as follows:

[0019] The unlocking device provides support to the unlocking striker through the frame. The tow cable passes through the unlocking striker, which works in conjunction with the tow cable. During tow cable retrieval, the buoyancy block moves with the tow cable. When it reaches the unlocking striker, the striker moves relative to the buoyancy block along the outer periphery of the tow cable. Due to the gap between the tow cable and the buoyancy block, the unlocking striker forms a sleeve connection with the tow cable inside. Thus, during continuous tow cable retrieval, the tow cable continuously passes through the unlocking striker, which inserts into the gap and then into the lock hole of the buoyancy block. Through the impact of the unlocking striker against the lock cylinder, the lock of the buoyancy block can be quickly opened, facilitating the rapid recovery of the marine tow cable and buoyancy block, increasing the tow cable retrieval speed, and thus improving the construction efficiency of the tow cable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other embodiments and drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A perspective view of an embodiment of an unlocking device for a buoyancy block is shown;

[0022] Figure 2 A top view schematic diagram of an embodiment of an unlocking device for a buoyancy block is shown;

[0023] Figure 3 It shows Figure 1 Sectional view of AA;

[0024] Reference numerals: 100, unlocking device; 110, frame; 111, base; 112, support column; 113, mounting base; 113a, mounting plate; 113b, longitudinal beam; 113c, crossbeam; 113d, cable tray opening; 114, conveying channel; 120, unlocking impact head; 121, insertion column; 121a, first insertion column; 121b, second insertion column; 121c, cable tray channel; 122, mating end; 123, reinforcing rib; 130, roller assembly; 131, first roller; 132, second roller; 133, wheel seat; 140, guide roller assembly; 141, first guide roller; 142, second guide roller. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0029] This application is described below with reference to the accompanying drawings and specific embodiments:

[0030] Please refer to Figures 1-3 This application provides an unlocking device 100 for a buoyancy block, designed to unlock a locking buoyancy block. The buoyancy block contains a lock with a conventional locking structure. The towing cable is a cable for a ship or offshore platform, or it can be an electric cable, rope, etc. The towing cable can pass through the buoyancy block, which has a channel for the towing cable. When the locking buoyancy block is in the unlocked state, its overall structure is open, exposing the channel portion. When a towing cable needs to be installed, the towing cable... The cable is moved to the structure that serves as the channel. Once the position is determined, the locking buoyancy block is locked in place. The tow cable passes through the buoyancy block, thus forming the installation configuration of the tow cable and the buoyancy block. In an optional embodiment, the buoyancy block can be a structure that connects the channel to the outer wall and has an opening in the outer wall. The tow cable can be inserted into the channel through the opening. After insertion, the lock of the buoyancy block is locked, thus disconnecting the connection between the channel and the opening. The tow cable can be fixed inside the buoyancy block by passing through it.

[0031] In an optional embodiment, the buoyancy block can also adopt other structural forms, as long as the buoyancy block is equipped with a lock located in the channel through which the towing cable passes. For example, a buoyancy block with a quick-opening and closing locking function as described in CN202210921636.4 can be used. This buoyancy block includes two floats connected by a hinge, and each of the two floats is provided with a cable-supporting groove that forms a cable-supporting hole after docking. The two floats are also connected by an opening and closing device, which includes a connecting mechanism and a locking slot. The connecting mechanism includes a sliding rod, an elastic reset member, and a locking pin. The sliding rod is slidably connected to one of the floats, and the elastic reset member is connected between the sliding rod and the float. Between them, the locking pin is fixedly connected to the sliding rod; the locking slot is fixed to another float, and the locking slot is provided with a receiving groove for accommodating the sliding rod. The top side of the locking slot is provided with a guide bevel for guiding the movement direction of the locking pin when the two floats are closed together. The locking slot connected to the guide bevel is provided with a locking pin groove adapted to the locking pin on one end face; both ends of the buoy have inlets of the unlocking device 100. The unlocking device 100 can be inserted from both ends of the buoy. The sliding rod, elastic reset member and locking pin of the buoy are equivalent to the lock cylinder. The unlocking device 100 applies a pushing force to the lock cylinder, which can open the buoy.

[0032] Please refer to Figure 2The unlocking device 100 includes a frame 110 and an unlocking head 120. The frame 110 is typically fixed to the hull or a floating platform. The frame 110 has a tow cable opening 113d for tow cables to pass through, allowing the tow cable to pass over it. The unlocking head 120 is fixed to the frame 110 using bolts, welding, or other connection methods. The unlocking head 120 is columnar, but can also be rod-shaped, block-shaped, or other forms. The unlocking head 120 has a tow cable channel 121c extending through both ends, creating a hollow structure. The tow cable channel 121c communicates with the tow cable opening 113d, allowing the tow cable to pass through. Matching the unlocking impact head 120, a bushing-fitting connection is formed. The tow cable can pass from one side of the frame 110 through the tow cable channel 121c and the tow cable opening 113d to the other side of the frame 110. The unlocking impact head 120 can be inserted into the lock hole of the buoyancy block along the tow cable. This lock hole is the channel through which the tow cable passes in the buoyancy block. The unlocking impact head 120 matches the lock cylinder of the buoyancy block. The unlocking impact head 120 can be inserted into the buoyancy block. Since the lock of the buoyancy block is located in the channel inside the buoyancy block, after the unlocking impact head 120 is inserted into the buoyancy block, it can match with the lock cylinder and act on the lock cylinder, thereby opening the lock of the buoyancy block through interaction.

[0033] The unlocking device 100 of the above embodiment provides support for the unlocking head 120 through the frame 110. The unlocking head 120 can cooperate with the tow cable by passing through the tow cable. During the tow cable retrieval process, the buoyancy block moves with the tow cable. When it reaches the position of the unlocking head 120, the unlocking head 120 can move relative to the buoyancy block along the outer periphery of the tow cable. Since there is a certain gap between the tow cable and the buoyancy block, the unlocking head 120 and the tow cable inside it form a sleeve connection. In this way, during the continuous tow cable retrieval process, the tow cable continuously moves through the unlocking head 120, and the unlocking head 120 can be inserted into the gap and then into the lock hole of the buoyancy block. Through the impact of the unlocking head 120 and the lock cylinder, the lock of the buoyancy block can be quickly opened, so as to facilitate the rapid recovery of the marine tow cable and the buoyancy block, improve the retrieval speed of the marine tow cable, and thus improve the construction efficiency of the tow cable.

[0034] In an optional embodiment, the unlocking bumper 120 includes an insertion post 121, which is divided into multiple spliced ​​structures circumferentially. Along the circumferential division, the splicing lines of adjacent spliced ​​structures extend along both ends of the insertion post 121, i.e., the splicing lines are arranged parallel to the insertion post 121. A cable channel 121c is arranged from one end of the insertion post 121 to the other end; that is, the cable channel 121c is arranged along both ends of the insertion post 121. The multiple spliced ​​structures can be two, three, or more segments, and each spliced ​​structure needs to have a certain thickness to provide sufficient structural strength. Adjacent spliced ​​structures are connected by welding, bolting, or other connection methods. This arrangement facilitates processing and unlocking of the device 1. Installation of 00; In an optional embodiment, the insertion post 121 includes a first insertion post 121a and a second insertion post 121b. Both the first insertion post 121a and the second insertion post 121b are half of a cylindrical structure. The splicing line of the first insertion post 121a and the second insertion post 121b is parallel to the axial direction of the cylindrical structure. At the splicing line, the edges of the first insertion post 121a and the second insertion post 121b are respectively provided with protruding edges, and multiple alternating small holes are opened on the protruding edges. After the first insertion post 121a and the second insertion post 121b are spliced, bolts are used to pass through the corresponding small holes to connect and fix the first insertion post 121a and the second insertion post 121b, thus forming a cylindrical structure. The cable channel 121c is the interior of the cylindrical structure.

[0035] In an optional embodiment, the unlocking bumper 120 further includes a mating end 122. The mating end 122 is annular, and its outer periphery is flush with the surface of the insertion post 121. This allows the mating end 122 to match the insertion post 121, thus smoothly entering the buoyancy block. The mating end 122 is connected to the cantilever end of the insertion post 121 by welding, bolting, or other connection methods. The shape of the mating end 122 matches the lock cylinder of the buoyancy block, allowing the mating end 122 to directly act on the lock cylinder to unlock the buoyancy block. In this embodiment, the mating end 122 and the insertion post 121 together match the lock cylinder of the buoyancy block. That is, the insertion post 121 also acts as a part of the lock cylinder. The entire insertion post 121 can be used as the mating part, or a section of the insertion post 121 can be used as the mating part. This can accommodate more types of buoyancy block lock structures. In an optional embodiment, the end of the mating end 122 facing the buoyancy block is set in a stepped shape. This structure is designed to match the internal channel structure of the stepped buoyancy block, specifically matching the lock cylinder of the buoyancy block.

[0036] In an optional embodiment, the unlocking impact head 120 further includes multiple reinforcing ribs 123, which are arranged around the unlocking impact head 120. The number of reinforcing ribs 123 is set as needed. The reinforcing ribs 123 adopt the structure of triangular plates. One edge of the reinforcing rib is welded to the outer wall of the unlocking impact head 120, and the other side of the reinforcing rib is welded to the connection between the unlocking impact head 120 and the frame 110. In this way, the reinforcing ribs 123 can support the connection between the unlocking impact head 120 and the frame 110, providing support between the unlocking impact head 120 and the frame 110, strengthening the structural strength of the unlocking impact head 120, and preventing the unlocking impact head 120 from deforming during long-term use. In an optional embodiment, the end of the insertion post 121 near the frame 110 is provided with a plate structure, which is located at the outer peripheral edge of the insertion post 121. The plate structure is provided with holes to facilitate the fixing of the insertion post 121 to the frame 110 by bolt connection. One side of the reinforcing rib is welded to the plate structure, thus providing another structural form.

[0037] Please refer to Figure 3 In an optional embodiment, the unlocking device 100 further includes a guide roller assembly 140, which includes multiple guide rollers. The guide rollers are rotatable relative to the frame 110, and their two ends are inserted into shaft holes provided on the frame 110, allowing them to rotate. The guide rollers are located at the cable opening 113d, and the encircling position formed by the guide rollers allows the cable to pass through. When the cable passes through the cable opening 113d, the guide rollers guide the cable, meaning the rolling direction of the guide rollers is consistent with the passing direction of the cable. In an optional embodiment, the guide rollers... Component 140 includes two first guide rollers 141 and two second guide rollers 142. The two first guide rollers 141 are arranged around the cable-carrying opening 113d, and the two second guide rollers 142 are arranged above and below the cable-carrying opening 113d. Both ends of the first guide rollers 141 and the second guide rollers 142 are connected to the frame 110, thus leaving a square cable-carrying opening 113d on the frame 110. The position of the cable is restricted by the first guide rollers 141 and the second guide rollers 142, and the cable is guided at the same time, so that the cable can pass through the frame 110.

[0038] In an optional embodiment, the frame 110 is provided with a conveying channel 114, which connects both sides of the frame 110. The two sides of the frame 110 are the opposite sides of the frame 110 along the direction of the towing cable. The cross-sectional dimension of the conveying channel 114 is larger than the size of the buoyancy block or the buoyancy block in the open state, so as to facilitate the passage of the buoyancy block. The buoyancy block after being unlocked by the unlocking bumper 120 can pass through the conveying channel 114. In an optional embodiment, the unlocking device 100 also includes a roller assembly 130 connected to the frame 110. The roller assembly 130 is located in the conveying channel 114. The roller assembly 130 is provided with multiple rollers and wheel seats 133. Each roller corresponds to a wheel seat 133. The wheel seat 133 is a conventional roller mounting structure. The wheel seat 133 has two opposite shaft holes. The roller has a shaft. The roller is inserted into the corresponding shaft hole through the shaft, thus completing the roller mounting. The rollers are used to guide the buoyancy block as it passes through, meaning the rolling direction of the rollers is consistent with the direction in which the buoyancy block passes. Specifically, the roller assembly 130 includes a first roller 131 and a second roller 132. Multiple first rollers 131 and two second rollers 132 are provided, such as two for each. The two first rollers 131 are located on both sides of the conveying channel 114 and are fixed to the frame 110 by wheel seats 133. The two second rollers 132 are located on the top wall of the conveying channel 114 and are fixed to the frame 110 by wheel seats 133. The above fixing method adopts welding, bolting or other methods. When the buoyancy block passes through the conveying channel 114, the two first rollers 131 guide the two sides of the buoyancy block, and the two second rollers 132 guide the top of the buoyancy block. When the buoyancy block passes through the conveying channel 114, it can be placed on the conveyor belt or float on the ocean surface.

[0039] In an optional embodiment, the frame 110 includes a mounting base 113, which has a mounting plate 113a. The mounting plate 113a is for facilitating the installation of the unlocking impact head 120, providing an installation area or position for the unlocking impact head 120 on the frame 110. The mounting plate 113a is a plate structure, and the unlocking impact head 120 is fixed to the mounting plate 113a by welding, or by opening mounting holes in the mounting plate 113a and fixing the unlocking impact head 120 to the mounting plate 113a by bolting. In an optional embodiment, the mounting base 113 also includes a longitudinal beam 113b and a transverse beam 113c, which are connected to form a frame structure. The longitudinal beams 113b and the transverse beams 113c are provided in multiple ways, such as welding, bolting or other connection methods. In an optional embodiment, the frame structure includes multiple layers of longitudinal beams 113b. The two ends of the transverse beams 113c in the same layer are connected to the longitudinal beams 113b. The longitudinal beams 113b extend from one side of the frame 110 to the other side. The longitudinal beams 113b can be provided in multiple layers. The upper and lower layers of longitudinal beams 113b are connected through the top and bottom of the transverse beams 113c. The mounting plate 113a is fixed to the frame structure. That is, the upper part of the mounting plate 113a is bolted to the upper layer of longitudinal beams 113b, and the lower part of the mounting plate 113a is bolted to the lower layer of longitudinal beams 113b. The frame structure can save processing costs and facilitate the setting of the cable port 113d.

[0040] In an optional embodiment, the frame 110 further includes a base 111 and multiple support columns 112. The base 111 serves as the basic structure of the entire unlocking device 100 and is installed in the working area. The base 111 uses intersecting steel profiles, welded or bolted together. For example, the base 111 may use two parallel steel profiles, bolted together in the middle by another steel profile, thus forming the basic structure. The support columns 112 connect to the base 111 and provide support for the mounting base 113. The bottom end of the support column 112 is welded, bolted, or otherwise connected to the base 111, and the top end of the support column 112 is welded, bolted, or otherwise connected to the mounting base 113. In an optional embodiment, the support... The columns 112 are set at an angle to form a stable triangular structure. Specifically, some of the support columns 112 are connected to the base 111 to form a triangular structure. Two adjacent support columns 112 can be connected to a part of the base 111 to form a triangular structure. For example, four support columns 112 are set on both sides of the frame 110. The two support columns 112 are inclined and close to each other, and the bottom ends of the two support columns 112 are connected to the base 111, thus forming a triangular structure. The top of the triangular structure is connected and fixed to the frame structure by welding, bolting or other connection methods. The use of a triangular structure can further enhance the structural strength of the frame 110 to provide sufficient support for the unlocking impact head 120.

[0041] The working principle of this application is as follows: When the locking buoyancy block is recovered with the tow cable and needs to be unlocked from the tow cable, the tow cable passes through the unlocking device 100. At the same time as the tow cable is recovered, the unlocking head 120 is inserted into the buoyancy block. The unlocking head 120 provides an axial force to any end of the buoyancy block. The lock cylinder of the buoyancy block is opened by matching with the unlocking head 120 and under the force. The buoyancy block opens, the tow cable disengages from the channel inside the buoyancy block, and then the buoyancy block passes through the conveying channel 114 for recovery. This unlocking process is fast and efficient, improving the recovery efficiency of the tow cable.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," "optional example," or "optional implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0043] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0044] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A locking device for a buoyancy block, characterized in that, The buoyancy block is equipped with a lock, and the towing cable can pass through the buoyancy block. The unlocking device (100) includes: The frame (110) is provided with a cable port (113d) for cable to pass through; An unlocking head (120) is fixed to the frame. The unlocking head (120) has a tow cable channel (121c) that runs through both ends. The tow cable channel (121c) is connected to the tow cable opening (113d). The unlocking head (120) matches the lock cylinder of the buoyancy block. The tow cable can pass through the tow cable channel (121c) and the tow cable opening (113d) from one side of the frame (110) to the other side of the frame (110). The unlocking head (120) can be inserted into the lock hole of the buoyancy block along the tow cable.

2. The unlocking device for a buoyancy block according to claim 1, characterized in that, The unlocking impact head (120) includes an insertion post (121), which is divided into multiple splicing structures in the circumferential direction. The splicing lines of adjacent splicing structures extend along both ends of the insertion post (121), and the tow cable channel (121c) is arranged from one end to the other end of the insertion post (121).

3. The unlocking device for a buoyancy block according to claim 2, characterized in that, The unlocking bumper (120) also includes a mating end (122), which is connected to the cantilever end of the insertion post (121). The mating end (122) matches the lock cylinder of the buoyancy block, or the mating end (122) and the insertion post (121) together match the lock cylinder of the buoyancy block.

4. The unlocking device for a buoyancy block according to claim 1, characterized in that, The unlocking impact head (120) also includes a plurality of reinforcing ribs (123), which are arranged around the unlocking impact head (120) and are provided and supported at the connection between the unlocking impact head (120) and the frame (110).

5. The unlocking device for a buoyancy block according to claim 1, characterized in that, It also includes a guide roller assembly (140) comprising a plurality of guide rollers rotatable relative to the frame (110) and located at the cable opening (113d) for guiding the cable as it passes through the cable opening (113d).

6. The unlocking device for a buoyancy block according to claim 1, characterized in that, The frame (110) is provided with a conveying channel (114), which connects the two sides of the frame (110). The buoyancy block, after being unlocked by the unlocking bumper (120), can pass through the conveying channel (114).

7. The unlocking device for a buoyancy block according to claim 6, characterized in that, It also includes a roller assembly (130) connected to the frame (110), the roller assembly (130) being located within the conveying channel (114), the roller assembly (130) having a plurality of rollers for guiding the buoyancy block as it passes.

8. The unlocking device for a buoyancy block according to any one of claims 1-7, characterized in that, The frame (110) includes a mounting base (113), the mounting base (113) is provided with a mounting plate (113a), and the unlocking bumper (120) is fixed to the mounting plate (113a).

9. The unlocking device for a buoyancy block according to claim 8, characterized in that, The mounting base (113) also includes a longitudinal beam (113b) and a transverse beam (113c), the longitudinal beam (113b) and the transverse beam (113c) are connected to form a frame structure, and the mounting plate (113a) is fixed to the frame structure.

10. The unlocking device for a buoyancy block according to claim 9, characterized in that, The frame (110) also includes a base (111) and a plurality of support columns (112), some of the support columns (112) are connected to the base (111) to form a triangular structure, and the triangular structure is connected and fixed to the frame structure.

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