A semi-automatic unhooking device for underwater anchoring

Abstract

The utility model discloses a half -automatic unhooking device for underwater anchoring, including hook board, deputy hook and main hook, the bottom of hook board is provided with the mounting groove, is equipped with deputy hook through the pivot of mounting groove bottom, and the main hook is clamped between two joint plates and is connected through the pin shaft, the side of hook board is equipped with locking buckle away from the main hook, is equipped with the mounting shaft on the hook board, is equipped with the hook joint plate on the both sides of mounting shaft, is equipped with the lock hook of hook joint plate one end through the connecting shaft, is equipped with the main hook through the adjustment shaft between the other end of hook joint plate, and the end of main hook is provided with the buckle, the utility model discloses through the primary lock of lock hook and main hook, and the secondary lock of main hook buckle and locking buckle, formed double anti -unhooking mechanism, greatly improved the ability of anti -impact, prevent accidental unhooking in the complex environment under water, operating personnel only need to pull the steel wire rope on the deck, can remote -trigger deputy hook mechanism unlocking, and then make main hook open under the load gravity automatically, complete throwing anchor.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and more specifically, to a semi-automatic unhooking device for underwater anchoring. Background Technology

[0002] As a specialized lifting equipment, the anchored vessel is primarily used for lifting operations on water, providing stable lifting support and precise operational assurance for various maritime projects. Its hull is equipped with four auxiliary positioning winches and a main lifting winch. The lifting point adopts an A-frame structure, and it also carries two propellers to ensure the vessel's navigation. During operation, it is anchored using four anchor claws, effectively resisting the effects of wind and waves. Lifting and lowering operations can only proceed after the vessel is stable; movement under load is strictly prohibited. This equipment has a wide range of applications, including the lifting and installation of components on water, covering bridges, docks, and related structures. It can also serve as supporting equipment for underwater operations, assisting in equipment hoisting and material transfer during underwater construction. Its core operational functions revolve around anchor block installation and related procedures.

[0003] Existing unhooking devices use a rigid connection between the hook and the catch when locking, which has the problem of slippage. In addition, this unhooking device cannot meet the requirement of manual release of the hook, and the original unhooking device is to release the hook from below.

[0004] Therefore, there is an urgent need to develop a semi-automatic unhooking device that has reliable locking, enables remote control on water, has stable unhooking action, and has a relatively simple structure. Utility Model Content

[0005] In view of the problems of unreliable locking, need for manual underwater operation or complex unhooking mechanism in existing underwater anchoring and unhooking devices, this utility model provides a device that is securely locked, can be remotely and semi-automatically controlled for unhooking via steel wire rope on the water, has a compact structure and is safe to operate.

[0006] According to one aspect of this utility model, a semi-automatic unhooking device for underwater anchoring is provided, comprising a hook plate, a secondary hook, and a main hook. The hook plate has a mounting groove at its bottom, and the secondary hook is mounted on the bottom of the mounting groove via a rotating shaft. Triangular connecting plates are mounted at both ends of the rotating shaft. The secondary hook is sandwiched between the two connecting plates and connected by a pin. A locking buckle with a hook groove is mounted on the upper part of the hook plate on the side opposite to the main hook. An mounting shaft is mounted on the hook plate, and hook connecting plates are mounted on both sides of the mounting shaft. A U-shaped locking hook is mounted on one end of each hook connecting plate via a connecting shaft. An adjusting shaft passes through the other ends of the hook connecting plates. An H-shaped main hook passes through the adjusting shaft, and a buckle that engages with the hook groove is provided at the end of the main hook. Torsion springs are mounted at both ends of the adjusting shaft, with the middle of the torsion spring pressing against the end face of the main hook. The two ends of the torsion spring are fixed to the hook connecting plates by fixing pins.

[0007] Based on the above scheme, a preferred embodiment is provided on the main hook, and a steel wire rope is connected to the pull ring.

[0008] Based on the above scheme, a preferred embodiment is provided with a tubular guide on the bottom side end face of the hook plate on the same side as the locking buckle, and the wire rope is threaded through the guide.

[0009] Based on the above scheme, the guide is preferably an arc-shaped hook structure.

[0010] Based on the above scheme, the two torsion springs are preferably integrated into one structure.

[0011] Based on the above scheme, preferably, the free end of the mounting groove is arc-shaped, and the bottom of the main hook is provided with an arc-shaped groove that is adapted to the free end of the mounting groove.

[0012] This utility model discloses a semi-automatic unhooking device for underwater anchoring. Through the engagement of the locking hook and the bearing hook, and the engagement of the main hook buckle and the locking buckle, two locking mechanisms are formed in sequence, which greatly enhances the device's resistance to impact and its ability to prevent accidental opening during hoisting and lowering.

[0013] On the other hand, operators only need to pull the steel cable on the deck to trigger the entire unlocking and unhooking process, eliminating the need for divers to work underwater, which significantly improves operational safety, adaptability and work efficiency.

[0014] The hook of this utility model adopts a four-bar linkage for constraint, which ensures stable working posture; the unhooking process is initiated by the tension of the steel wire rope and then automatically completed by the load gravity, with smooth and definite action and high reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a first perspective view of the semi-automatic unhooking device for underwater anchoring according to the present invention; Figure 2 This is a second perspective view of the semi-automatic unhooking device for underwater anchoring according to the present invention; Figure 3 This is a side view of the semi-automatic unhooking device for underwater anchoring according to the present invention; Figure 4 This is a schematic diagram of the first process of the present invention in the unhooked state. Figure 5 This is a schematic diagram of the second process in which the present invention is in the unhooked state.

[0016] In the picture: 1. Hook plate; 11. Mounting groove; 12. Lifting hole; 13. Adjusting shaft; 14. Rotating shaft; 15. Connecting plate; 16. Pin; 17. Mounting shaft; 18. Connecting shaft; 19. Fixing pin; 2. Main hook; 21. Buckle; 22. Pull ring; 23. Pull rope; 3. Secondary hook; 4. Locking buckle; 41. Hook groove; 5. Hook and loop plate; 6. Locking hook; 62. Limiting groove; 7. Torsion spring; 8. Guide device; 9. Steel wire rope; Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0019] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0020] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0021] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the positions of these components change, these directional indications also change accordingly.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] Please see Figure 1 and combined Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides a semi-automatic unhooking device for underwater anchoring, comprising a hook plate 1, a main hook 2, and a secondary hook 3.

[0025] The hook plate 1 is made of thick steel plate, with a U-shaped mounting groove 11 machined at the bottom and a lifting hole 12 welded at the top. A locking buckle 4 is welded to the upper right side of the hook plate 1, and an upward hook groove 41 is machined on the locking buckle 4. An arc-shaped steel pipe is installed on the lower part of the hook plate 1 on the same side as a guide 8.

[0026] In this invention, a rotating shaft 14 is installed at the bottom of the mounting groove 11 of the hook plate 1. Triangular connecting plates 15 are inserted through both ends of the rotating shaft 14. A secondary hook 3 is sandwiched between the two connecting plates 15. The secondary hook 3 is rotatably connected to the two connecting plates 15 by two pins 16.

[0027] This utility model also includes a pair of hook plates 5, which are mounted parallel to each other on both sides of the hook plate 1 via a mounting shaft 17, with the front end of the hook plate 5 ( Figure 1 The middle left end) is hinged to a U-shaped locking hook 6 via a connecting shaft 18. The rear end of the hook plate 5 ( Figure 1 An adjusting shaft is inserted at the right end of the main hook 2, and a central hole in the main hook 2 is fitted onto the adjusting shaft. The upper end of the main hook 2 is provided with a buckle 21, and the lower end is provided with a pull ring 22. The buckle 21 is adapted to the hook groove 41.

[0028] This utility model uses an integral torsion spring sleeved on the adjusting shaft. Its central part is in a straight line and is pressed tightly against the side end surface of the main hook 2. The torsion arms at both ends are fixed to the hook connecting plate 5 by fixing pins 19.

[0029] Under the action of the torsion spring, the buckle 21 of the main hook 2 is pressed tightly into the hook groove 41 of the locking buckle 4, thereby locking the entire hook plate 1 and the main hook 2. At the same time, the locking hook 6 at the other end of the hook connecting plate 5 engages with the long side of the auxiliary hook 3. Thus, under the action of the torsion spring, the locking hook 6 and the auxiliary hook 3, and the buckle 21 and the hook groove 41 form a mutually balanced force arm. Furthermore, the design of the groove and the protrusion engaging with each other improves the rigid collision connection into a hook-type connection, thereby avoiding the possibility of the auxiliary hook 3 and the main hook 2 falling off to a certain extent.

[0030] When the semi-automatic unhooking device is in the closed state, the locking hook 6 and the auxiliary hook 3, as well as the buckle 21 and the locking buckle 4, are all in a hook-and-hook connection state. The auxiliary hook 3 and the hook plate 1 are also in a hook-and-hook connection state. When the operator pulls the wire rope 9 on the water surface, the underwater unhooking device, guided and pulled by the wire rope 9 and the guide 8, drives the pull ring 22 on the auxiliary hook 3 to pull the buckle 21 and the hook groove 41 of the main hook 2. The auxiliary hook 3 and the locking hook 6 are unhooked, realizing the function of the operator to operate the unhooking device without entering the bottom of the water, reducing the risk of the operator entering the bottom of the water to unhook the unhooking device.

[0031] The unhooking device of this utility model, by setting a locking hook 6 on the hook plate 1, the auxiliary hook 3, and the main hook 2 to form a mutually opposing force arm structure with the auxiliary hook 3, the buckle 21 and the hook groove 41, realizes the hook connection between the hook plate 1 and the auxiliary hook 3, and between the auxiliary hook 3 and the main hook 2, which enhances the anti-unhooking performance of the unhooking device. Through the steel wire rope 9 and the guide 8, the auxiliary hook 3 is driven to unhook from the main hook 2, realizing the function of the operator to operate the unhooking device without entering the bottom of the water.

[0032] Please see Figure 4 and Figure 5 As shown, when the wire rope 9 is pulled, the pull ring 22 drives the main hook 2 to rotate around the adjusting shaft, causing the buckle 21 on the main hook 2 to gradually disengage from the hook groove 41. With the continuous force of the pull ring 22, the hook connecting plate 5 rotates around the mounting shaft 17. When the hook connecting plate 5 rotates to a position close to horizontal, the locking hook 6 and the auxiliary hook 3 gradually separate. The auxiliary hook 3, which loses the force of the locking hook 6, will drive the connecting plate 15 to rotate around the rotating shaft 14 under the action of gravity, thereby causing the lifting ring limited in the auxiliary hook 3 to disengage.

[0033] When the secondary hook 3 and the main hook 2 are closed, the hook groove 41 and the buckle 21 of the main hook 2 engage with each other, realizing a hook-hook connection, thereby enhancing the anti-disengagement performance of the disengagement device and improving the safety performance of the disengagement device during operation. The secondary hook 3 engages in the limiting groove on the locking hook 6, realizing the closure of the secondary hook 3 and the main hook 2.

[0034] The auxiliary hook 3 mechanism of this utility model is designed so that the auxiliary hook 3 is inserted into the limiting groove on the locking hook 6, and the auxiliary hook 3 is closed with the main hook 2. The pull ring 22 is pulled by the wire rope 9, and the locking hook 6 and the auxiliary hook 3 start to rotate and disengage from the corresponding limiting groove. Through the linkage of the hook connecting plate 5 installed on the side of the hook body, the force is transmitted between the locking hook 6 and the auxiliary hook 3. The rotation of the main hook 2 can drive the auxiliary hook 3 to rotate.

[0035] When the main hook 2 is closed, the locking hook 6 can automatically lock onto the back of the hook tip of the secondary hook 3 under the action of gravity or external force, completing the initial locking.

[0036] Preferably, one end of the wire rope 9 of this invention is tied to the pull ring 22, and the other end passes through the guide 8 and is guided along the hull to the deck control area.

[0037] The auxiliary hook 3 and the main hook 2 employ a locking design with limiting grooves and limiting blocks, transforming the rigid collision connection into a snap-hook connection, thereby preventing the auxiliary hook 3 and the main hook 2 from detaching to a certain extent. When the unhooking device is in the closed state, the main hook 2 is inserted into the hook groove 41 of the locking buckle 4 on one side of the hook plate 1. Under the linkage action of the hook connecting plate 5, the auxiliary hook 3 and the hook plate 1, as well as the main hook 2 and the hook plate 1, are in a snap-hook connection state.

[0038] The operator pulls the steel wire rope 9 on the water surface. Under the guidance and traction of the steel wire rope 9 and the guide 8, the underwater unhooking device drives the pull ring 22 on the main hook 2 and the hook connecting plate 5 to disengage, realizing the sequential disengagement of the main hook 2 from the hook plate 1 and the secondary hook 3 from the hook plate 1. This allows the operator to operate the unhooking device without entering the water, reducing the risk of the operator entering the water to unhook the device. The unhooking device of this invention, through the hook connecting plate 5 designed on the hook plate 1, secondary hook 3, and main hook 2, achieves a hook connection between the hook plate 1 and the secondary hook 3, and between the secondary hook 3 and the main hook 2, enhancing the anti-disengagement performance of the unhooking device. Through the steel wire rope 9 and the guide 8, the secondary hook 3 mechanism disengages from the main hook 2 mechanism, enabling the operator to operate the unhooking device without entering the water.

[0039] In another embodiment of this utility model, a semi-automatic unhooking device for underwater anchoring is provided, comprising the following steps: 1) The main hook 2 interacts with the locking buckle 4 through the limiting groove, and combined with the function of the hook connecting plate 5, the secondary hook 3 and the locking hook 6 limit the lifting ring to be limited within the limiting space of the hook body, the locking hook 6, and the secondary hook 3.

[0040] 2) After the secondary hook 3 is hooked into the lifting ring for lifting, the center of force on the claw arc surface of the secondary hook 3 shifts outward relative to the center of the hinge shaft.

[0041] 3) The guide 8 uses the wire rope 9 to pull the pull ring 22, which drives the main hook 2 away from the hook groove 41. The hook connecting plate 5 is hinged on the main hook 2 by the adjusting shaft.

[0042] 4) Continue to pull the ring 22, the main hook 2 drives the auxiliary hook 3 to rotate, and the inner edge of the auxiliary hook 3 presses against the inner claw of the main hook 2.

[0043] 5) Continue pulling the pull ring 22. The auxiliary hook 3 will cause the main hook 2 to rotate, thereby increasing the shift of the center of force. The positioning of the auxiliary hook 3 can prevent the main hook 2 from disengaging.

[0044] 6) After the pressure head completely leaves the hook groove 41, the auxiliary hook 3 pushes open the main hook 2, and the main hook 2 flips over without restraint.

[0045] Finally, the main hook 2 disengages from the eyelet attached to it.

[0046] This utility model discloses a semi-automatic unhooking device for underwater anchoring. Through the engagement of the locking hook and the bearing hook, and the engagement of the main hook buckle and the locking buckle, two locking mechanisms are formed in sequence, which greatly enhances the device's resistance to impact and its ability to prevent accidental opening during hoisting and lowering.

[0047] On the other hand, operators only need to pull the steel cable on the deck to trigger the entire unlocking and unhooking process, eliminating the need for divers to work underwater, which significantly improves operational safety, adaptability and work efficiency.

[0048] The hook of this utility model adopts a four-bar linkage for constraint, which ensures stable working posture; the unhooking process is initiated by the tension of the steel wire rope and then automatically completed by the load gravity, with smooth and definite action and high reliability.

[0049] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A semi-automatic unhooking device for underwater anchoring, characterized in that, The device includes a hook plate, a secondary hook, and a main hook. The bottom of the hook plate has a mounting groove, and the secondary hook is mounted on the bottom of the mounting groove via a rotating shaft. Triangular connecting plates are mounted at both ends of the rotating shaft. The secondary hook is sandwiched between the two connecting plates and connected by a pin. A locking buckle with a hook groove is mounted on the upper part of the hook plate on the side opposite to the main hook. An mounting shaft is mounted on the hook plate, and hook connecting plates are mounted on both sides of the mounting shaft. A U-shaped locking hook is mounted on one end of each hook connecting plate via a connecting shaft. An adjusting shaft passes through the other ends of the hook connecting plates. An H-shaped main hook passes through the adjusting shaft, and the end of the main hook has a buckle that engages with the hook groove. Torsion springs are mounted at both ends of the adjusting shaft. The middle of the torsion spring presses against the end face of the main hook, and both ends of the torsion spring are fixed to the hook connecting plate by fixing pins.

2. The semi-automatic unhooking device for underwater anchoring as described in claim 1, characterized in that, The main hook is equipped with a pull ring, and a steel wire rope is connected to the pull ring.

3. A semi-automatic unhooking device for underwater anchoring as described in claim 2, characterized in that, A tubular guide is provided on the bottom side end face of the hook plate on the same side as the locking buckle, and the wire rope is threaded through the guide.

4. A semi-automatic unhooking device for underwater anchoring as described in claim 3, characterized in that, The guide has an arc-shaped hook structure.

5. A semi-automatic unhooking device for underwater anchoring as described in claim 1, characterized in that, The two torsion springs are a single integrated structure.

6. A semi-automatic unhooking device for underwater anchoring as described in claim 1, characterized in that, The free end of the mounting groove is arc-shaped, and the bottom of the main hook is provided with an arc-shaped groove that is adapted to the free end of the mounting groove.

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