A fishing device

Abstract

The application discloses a fishing device used in the technical field of phosphating, which comprises a first hook, a second hook and a third hook, the first hook is connected with the second hook and the third hook, the third hook is connected with the first hook and the second hook, the top of the first hook, the second hook and the third hook is connected with a traction part, the traction part is used for pulling the first hook, the second hook and the third hook, when the force applied on the first hook by the traction part is greater than the force applied on the second hook and the third hook, the first hook vertically rises, the second hook and the third hook downwardly incline, and the second hook and the third hook are fixed from the side or the bottom of the hanging object by the downward inclination of the second hook and the third hook.

Description

Technical Field

[0001] This application relates to the field of phosphoric acid chemical technology, and in particular to a salvage device. Background Technology

[0002] In the extraction of phosphoric acid from phosphate rock, the stable operation of the extraction tank plays a decisive role. However, the suspended material in the extraction tank is exposed to an acidic environment with a solid content of approximately 40% for extended periods, and operates continuously for long periods. This makes the main shaft of the suspended material highly susceptible to varying degrees of abrasion and corrosion, eventually leading to breakage. Once the main shaft of the suspended material breaks, the reactants in the extraction tank cannot be adequately stirred, forcing the extraction unit to shut down and severely impacting extraction efficiency.

[0003] To address this issue, existing technologies employ cranes for salvage operations. Before salvage, the extraction device must be stopped, and the slurry level in the extraction tank must be lowered to expose the broken object. Then, a series of operations are performed, including emptying the tank, removing the manhole, cooling, and cleaning the accumulated slag in the extraction tank, before the broken object can be processed.

[0004] Although using cranes for lifting and salvage operations can accomplish the task of retrieving the object, the preparation work takes a long time, the operation process is complicated, and manual work is required in a confined space, which poses a high safety risk and is difficult to meet current production needs. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a salvage device, comprising:

[0006] First hook, second hook, and third hook;

[0007] The first hook is connected to the second hook and the third hook;

[0008] The third hook is connected to the first hook and the second hook;

[0009] The tops of the first hook, the second hook, and the third hook are connected to the traction member;

[0010] The traction member is used to pull the first hook, the second hook, and the third hook. When the force applied by the traction member to the first hook is greater than the force on the second hook and the third hook, the first hook rises vertically and the second hook and the third hook tilt downward. By tilting downward through the second hook and the third hook, the second hook and the third hook fix the suspended object from the side or bottom.

[0011] Optionally, the first hook includes a first hook shank and a first claw hook;

[0012] The first hook shank is connected to the second hook and the third hook;

[0013] The top end of the first hook shank is connected to the traction member;

[0014] The first claw hook and the end of the first hook handle are integrally formed.

[0015] Optionally, the second hook includes a second hook shank and a second claw hook;

[0016] The second hook handle is connected to the first hook handle and the third hook;

[0017] The top end of the second hook shank is connected to the traction member;

[0018] The second claw hook and the end of the second hook handle are integrally formed.

[0019] Optionally, the third hook includes a third hook shank and a third claw hook;

[0020] The third hook handle is connected to the first hook handle and the second hook handle;

[0021] The top end of the third hook handle is connected to the traction member;

[0022] The third claw hook and the end of the third hook handle are integrally formed.

[0023] Optionally, the first hook handle, the second hook handle, and the third hook handle are connected by welding.

[0024] Optionally, one or more of the first hook handle, the second hook handle, and the third hook handle may have the following structure, which includes a handle body and a mounting hole;

[0025] The mounting hole is located at the top of the handle;

[0026] The handle is connected to the traction member through the mounting hole.

[0027] Optionally, one or more of the first claw hook, the second claw hook, and the third claw hook may have the following structure, which includes a hook body and a hook tip;

[0028] One end of the hook body and the hook tip are integrally formed;

[0029] The other end of the hook is integrally formed with the handle.

[0030] Optionally, the arc of the hook body is greater than the arc of the hook tip.

[0031] Optionally, the volume of the first hook is the same as the volume of the second hook and the third hook.

[0032] Optionally, the angle between the first hook and the second and third hooks is 120 degrees.

[0033] As can be seen from the above technical solutions, this application has the following advantages:

[0034] This application achieves rapid fixation of the suspended object through the connection and cooperation of the first, second, and third hooks. When the force applied to the first hook by the traction component is greater than that of the second and third hooks, the first hook rises vertically, causing the second and third hooks to tilt downwards. This tilting action allows the second and third hooks to easily fix the suspended object from the side or bottom, eliminating the need for complex preliminary preparations and manual operation in confined spaces. This greatly improves retrieval efficiency, reduces operational risks, ensures personnel safety, simplifies the operation process, and meets the demands of modern production for efficiency and safety. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the salvage device of this application;

[0036] Figure 2 This is another schematic diagram of the overall structure of the salvage device of this application;

[0037] Figure 3 This is a schematic diagram of the hook structure of the salvage device in this application. Detailed Implementation

[0038] To address the aforementioned technical problems, this application provides a salvage device for use in the field of phosphoric acid chemical technology.

[0039] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0040] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0042] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0043] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Please see Figures 1 to 3 This application provides a salvage device, which includes:

[0045] First hook 1, second hook 2 and third hook 3;

[0046] The first hook 1 is connected to the second hook 2 and the third hook 3;

[0047] The third hook 3 is connected to the first hook 1 and the second hook 2;

[0048] The tops of the first hook 1, the second hook 2, and the third hook 3 are connected to the traction member 4;

[0049] The traction member 4 is used to pull the first hook 1, the second hook 2 and the third hook 3. When the force applied by the traction member 4 to the first hook 1 is greater than the force on the second hook 2 and the third hook 3, the first hook 1 rises vertically and the second hook 2 and the third hook 3 tilt downward. By tilting the second hook 2 and the third hook 3 downward, the second hook 2 and the third hook 3 fix the suspended object from the side or bottom.

[0050] The components of this embodiment are described in detail below:

[0051] First hook 1: The top of the first hook 1 is connected to the traction member 4, forming a triangular gripping structure with the second hook 2 and the third hook 3. The first hook 1 mainly serves a guiding function. When the load is detected, the first hook 1 will be pulled vertically by the traction member 4. Since the first hook 1 is connected to the second hook 2 and the third hook 3, the second hook 2 and the third hook 3 will tilt downwards, thereby securing the load.

[0052] Second hook 2: The top of the second hook 2 is connected to the traction member 4, forming a triangular gripping structure with the first hook 1 and the third hook 3. The second hook 2 is mainly used to grip and secure the suspended object from the side or bottom. When the first hook 1 rises vertically under the action of the traction member 4, the second hook 2, connected to the first hook 1, and the third hook 3 will tilt downwards together. This tilting action allows the second hook 2 and the third hook 3 to wrap around the suspended object from the side or bottom, and then use the friction and tension of the hooks to grip the object. Throughout the salvage process, the second hook 2 and the third hook 3 work together to bear the weight of the suspended object, ensuring the stability of the salvage operation.

[0053] The third hook 3: The top of the third hook 3 is connected to the traction component 4, forming a triangular gripping structure with the first hook 1 and the second hook 2. The third hook 3 is mainly used to cooperate with the second hook 2 to complete the task of gripping and fixing the suspended object. During the salvage process, the third hook 3 and the second hook 2 evenly share the weight of the suspended object.

[0054] Traction component 4: Traction component 4 connects the tops of the first hook 1, the second hook 2, and the third hook 3. The main function of traction component 4 is to pull the first hook 1, the second hook 2, and the third hook 3 to the vicinity of the suspended object, and to apply traction and pulling forces to the first hook 1, the second hook 2, and the third hook 3 so that the first hook 1, the second hook 2, and the third hook 3 can retrieve the suspended object.

[0055] In practical applications, when the retrieval device reaches the predetermined position, the traction component 4 first applies a pulling force to the first hook 1. This pulling force causes the first hook 1 to rise vertically. Since the second hook 2 and the third hook 3 are connected to the first hook 1, the second hook 2 and the third hook 3 tilt downwards. This tilting action allows the second hook 2 and the third hook 3 to approach and attach to the suspended object from the side or bottom. Furthermore, the increased pulling force of the traction component 4 on the first hook 1 and the second hook 2 allows the second hook 2 and the third hook 3 to secure the suspended object. Finally, after confirming that the suspended object has been securely grasped by the second hook 2 and the third hook 3, the entire retrieval device and the suspended object can be moved together by the pulling force applied by the traction component 4 to the first hook 1, the second hook 2, and the third hook 3, thus completing the task of retrieving the suspended object.

[0056] In this embodiment, the rapid securing of the suspended object is achieved through the connection and cooperation of the first hook 1, the second hook 2, and the third hook 3. When the force applied to the first hook 1 by the traction component 4 is greater than that of the second hook 2 and the third hook 3, the first hook 1 rises vertically, causing the second hook 2 and the third hook 3 to tilt downwards. This tilting action allows the second hook 2 and the third hook 3 to easily secure the suspended object from the side or bottom, eliminating the need for complex preliminary preparations and manual operation in confined spaces. This greatly improves retrieval efficiency, reduces operational risks, ensures personnel safety, simplifies the operation process, and meets the demands of modern production for efficiency and safety.

[0057] In an optional embodiment, the first hook 1 includes a first hook shank 5 and a first claw hook 6;

[0058] The first hook handle 5 is connected to the second hook 2 and the third hook 3;

[0059] The top end of the first hook handle 5 is connected to the traction member 4;

[0060] The first claw hook 6 and the end of the first hook handle 5 are integrally formed.

[0061] This embodiment provides a specific implementation of the first hook 1. In this implementation, the first hook 1 includes a first hook shank 5 and a first claw hook 6. The first hook shank 5 is connected to the second hook 2 and the third hook 3. A traction member 4 is connected to the top of the first hook shank 5. The first claw hook 6 is integrally formed with the end of the first hook shank 5. When the traction member 4 applies a pulling force to the first hook 1, causing the first hook 1 to move vertically upwards, the traction member 4 utilizes the connection between the first hook shank 5 and the second hook 2 and the third hook 3 to move the entire retrieval device. Since the first claw hook 6 is integrally formed with the first hook shank 5, it moves together with the first hook shank 5. Under the pulling force, the first hook 1 rises vertically, simultaneously causing the second hook 2 and the third hook 3 to tilt and approach the suspended object, causing the second hook 2 and the third hook 3 to adhere to and fix the suspended object. Finally, the traction member 4 moves the entire device and the suspended object together, thus completing the retrieval task.

[0062] In practical applications, the first hook 1 is connected to the second hook 2 and the third hook 3 via the first hook shank 5, forming a stable connection structure and enhancing the overall stability of the retrieval device. The top of the first hook shank 5 is connected to the traction component 4, facilitating the application of external force and enabling flexible movement of the device. The integrated molding of the first claw hook 6 and the first hook shank 5 ensures that the first hook shank 5 and the first claw hook 6 maintain a tight connection under traction and upward pulling forces, preventing detachment or breakage. This improves the connection strength between the first claw hook 6 and the first hook shank 5, and also allows the retrieval device to more effectively grasp and secure the suspended object, improving retrieval efficiency and safety.

[0063] In an optional embodiment, the second hook 2 includes a second hook shank 7 and a second claw hook 8;

[0064] The second hook handle 7 is connected to the first hook handle 5 and the third hook 3;

[0065] The top end of the second hook shank 7 is connected to the traction member 4;

[0066] The ends of the second claw hook 8 and the second hook handle 7 are integrally formed.

[0067] This embodiment provides a specific implementation of the second hook 2. In this implementation, the second hook 2 includes a second hook shank 7 and a second claw hook 8. The second hook shank 7 connects to the first hook shank 5 and the third hook 3. The top end of the second hook shank 7 is connected to a traction member 4. The second claw hook 8 and the end of the second hook shank 7 are integrally formed. When the first hook 1 is vertically upward, because the second hook shank 7 of the second hook 2 is connected to the first hook shank 5 and the third hook 3, the second hook shank 7 and the third hook 3 will tilt downward. Then, because the traction member 4 is connected to the top end of the second hook shank 7, the traction member 4 will pull the second hook shank 7, causing the retrieval device to approach the suspended object. When the pulling force of the traction member 4 on the second hook shank 7 increases, because the second claw hook and the second hook shank 7 are integrally formed, the second claw hook 8 will fix the suspended object from the side or bottom. Finally, the entire retrieval device and the suspended object are moved upward together by the traction member 4, thus completing the retrieval task.

[0068] In practical applications, the robust connection between the second hook shank 7 and the first hook shank 5 and the third hook 3 enhances the structural strength and stability of the entire retrieval device. The top of the second hook shank 7 is connected to the traction component 4, allowing the traction force to be directly transmitted to the second hook 2, improving the flexibility and efficiency of the retrieval operation. Simultaneously, the integrated molding of the second claw hook 8 and the end of the second hook shank 7 not only enhances the claw hook's load-bearing capacity but also ensures a seamless connection between the two claw hooks and the two hook shanks, reducing the risk of malfunction and disconnection during use, and improving retrieval efficiency and safety.

[0069] In an optional embodiment, the third hook 3 includes a third hook shank 9 and a third claw hook 10;

[0070] The third hook handle 9 is connected to the first hook handle 5 and the second hook handle 7;

[0071] The top end of the third hook 9 is connected to the traction member 4;

[0072] The third claw hook 10 and the end of the third hook handle 9 are integrally formed.

[0073] This embodiment provides a specific implementation of the third hook 3. In this implementation, the third hook 3 includes a third hook handle 9 and a third claw hook 10. The third hook handle 9 is connected to the first hook handle 5 and the second hook handle 7. The top end of the third hook handle 9 is connected to a traction member 4. The third claw hook 10 and the end of the third hook handle 9 are integrally formed. When the force applied by the traction member 4 to the first hook 1 is greater than the force on the second hook 2 and the third hook 3, the first hook handle 5 will move vertically upward. Since the third hook handle 9 is connected to the second hook handle 7 and the first hook handle 5, the second hook handle 7 and the third hook handle 9 will tilt downward. Then, since the third claw hook 10 and the third hook handle 9 are integrally formed, based on the downward tilt of the third hook 3, the traction member 4 applies a pulling force to the third hook handle 9, thereby causing the third claw hook 10 to gradually approach the suspended object. As the pulling force continues to increase, the third claw hook 10 secures the suspended object from the side or bottom. Finally, the traction member 4 moves the entire retrieval device and the suspended object upward together, completing the retrieval task.

[0074] In practical applications, the robust connection between the third hook shank 9 and the first hook shank 5 and the second hook shank 7 further enhances the structural integrity and stability of the entire device, allowing the retrieval device to maintain its overall shape even under significant pulling force, preventing deformation or damage. The connection design between the top of the third hook shank 9 and the traction component 4 ensures that the traction force is transmitted to the third hook 3, improving the response speed and control precision of the retrieval operation. Simultaneously, the integrated molding of the third claw hook 10 and the end of the third hook shank 9 not only enhances the robustness and durability of the third hook 3 but also ensures the tightness and reliability of the connection between the third claw hook 10 and the third hook shank 9, effectively preventing safety hazards caused by loosening or detachment during use.

[0075] In an optional embodiment, the first hook handle 5, the second hook handle 7, and the third hook handle 9 are connected by welding.

[0076] In this embodiment, during the salvage operation, the first hook shank 5, the second hook shank 7, and the third hook shank 9 are connected by welding to form a stable salvage device frame. This welding connection ensures the connection strength between the three hook shanks, allowing the entire salvage device to maintain structural integrity when bearing the weight of the suspended object, making it less prone to breakage or separation. Simultaneously, the welding connection improves the load-bearing capacity and stability of the salvage device, reducing safety hazards caused by loose or broken connections during use.

[0077] In an optional embodiment, one or more of the first hook handle 5, the second hook handle 7, and the third hook handle 9 adopt the following structure, which includes a handle body 11 and a mounting hole 12.

[0078] The mounting hole 12 is located at the top of the handle 11;

[0079] The handle 11 is connected to the traction member 4 through the mounting hole 12.

[0080] This embodiment provides a specific implementation of a hook handle. In this implementation, one or more of the first hook handle 5, the second hook handle 7, and the third hook handle 9 adopt the following structure: the structure includes a handle body 11 and a mounting hole 12. The mounting hole 12 is located at the top end of the handle body 11, and the handle body 11 is connected to the traction member 4 through the mounting hole 12. When the salvage operation begins, the traction member 4 is activated and applies a pulling or pushing force. This force is transmitted to the handle body 11 itself through the mounting hole 12 at the top end of the handle body 11. Since the handle body 11 and the hook handle are integrally designed or firmly connected, when the handle body 11 is subjected to the pulling or pushing force of the traction member 4, it will drive the entire hook handle to perform the corresponding action.

[0081] Specifically, if the traction member 4 applies an upward pulling force, the handle 11 and the hook shank connected to it will be lifted upward. This lifting action allows the retrieval device to hook the suspended object and lift it from the extraction tank. During this process, it is the hook shank portion, where the handle 11 and mounting hole 12 are located, that moves, while the mounting hole 12, as a connection point, stably transmits the pulling force of the traction member 4. Once the suspended object is secured by the retrieval device, the traction member 4 applies a pulling force to move the entire retrieval device and the suspended object to the designated position. During this process, the handle 11 and mounting hole 12 still play a crucial role, ensuring that the force of the traction member 4 can be accurately transmitted to the first hook shank 5, the second hook shank 7, and the third hook shank 9, thereby driving the first hook shank 5, the second hook shank 7, and the third hook shank 9 and the suspended object to move together.

[0082] In practical applications, the traction component 4 can stably and efficiently transmit pulling or traction force through the handle 11 and the mounting hole 12 at the top of the handle 11, ensuring that the first hook handle 5, the second hook handle 7, and the third hook handle 9 can respond accurately and quickly to the salvage operation. This design not only improves the efficiency and accuracy of the salvage operation but also enhances the stability and reliability of the entire salvage device. At the same time, the firm connection between the handle 11 and the mounting hole 12 effectively prevents loosening or damage that may occur during operation, further ensuring the safety of the salvage operation.

[0083] In an optional embodiment, one or more of the first claw hook 6, the second claw hook 8, and the third claw hook 10 adopt the following structure, which includes a hook body 13 and a hook tip 14;

[0084] One end of the hook body 13 and the hook tip 14 are integrally formed;

[0085] The other end of the hook 13 is integrally formed with the handle 11.

[0086] This embodiment provides a specific implementation of a claw hook. In this implementation, one or more of the first claw hook 6, the second claw hook 8, and the third claw hook 10 adopt the following structure: the structure includes a hook body 13 and a hook tip 14. One end of the hook body 13 and the hook tip 14 are integrally formed, and the other end of the hook body 13 is integrally formed with the handle body 11. When retrieving a suspended object, the retrieval device is first hoisted to a suitable position above the suspended object, and the angle is adjusted so that the retrieval device can be aligned with the suspended object. Then, the retrieval device is lowered so that the hook tip 14 is close to the suspended object, and one or two claw hooks are selected to contact the suspended object according to the actual situation of the suspended object. Further, when the hook tip 14 contacts the suspended object, the hook tip 14 is used to penetrate into the bottom gap or other suitable part of the suspended object. Since the structure and the hook tip are integrally formed, the hook body 13 can fix the suspended object. Finally, after ensuring that the structure is firmly hooked to the suspended object, the traction component 4 is slowly activated to smoothly lift the retrieval device and the suspended object, thus completing the retrieval work.

[0087] In practical applications, the integrated structure of the hook body 13 and the handle body 11 ensures the overall stability of the claw hook, reduces weak points that may occur due to welding or splicing, greatly improves the strength and durability of the claw hook, and enables the claw hook to withstand greater tensile and impact forces, while also being less prone to damage.

[0088] In an optional embodiment, the arc of the hook body 13 is greater than the arc of the hook tip 14.

[0089] In this embodiment, when the claw hook approaches the suspended object, the hook tip 14 will contact the surface of the suspended object first due to its smaller curvature. As it gets closer, the hook body 13, with its larger curvature, can better conform to the contour of the suspended object from the side or bottom, and gradually wrap around the suspended object, increasing the contact area and friction.

[0090] In practical applications, due to the smaller curvature of the hook tip 14, it can accurately contact the surface of the suspended object first when the claw hook approaches, thus finding the right point of force for subsequent gripping. As the claw hook gets closer, the larger curvature of the hook body 13 can conform to the contour of the suspended object from the side or bottom, gradually enveloping it, greatly increasing the contact area and friction between the retrieval device and the suspended object. This makes the claw hook more stable when gripping the suspended object, less prone to loosening or slipping, greatly improving the safety and reliability of the retrieval operation. At the same time, it can better adapt to suspended objects of different shapes and materials, significantly improving the applicability and work efficiency of the retrieval device.

[0091] In an optional embodiment, the volume of the first hook 1 is the same as the volume of the second hook 2 and the third hook 3.

[0092] In this embodiment, by utilizing the consistency in size of the first hook 1, the second hook 2, and the third hook 3, the stability and reliability of the grasping process are improved, and the risk of the suspended object slipping during the grasping process is reduced. Furthermore, the force borne by each hook is more evenly distributed when the suspended object is suspended and secured. Moreover, because the first hook 1, the second hook 2, and the third hook 3 are of the same size, it is easier for operators to perform uniform installation, debugging, and maintenance during the retrieval process, effectively improving work efficiency.

[0093] In an optional embodiment, the angle between the first hook 1 and the second hook 2 and the third hook 3 is 120 degrees.

[0094] In this embodiment, the included angle between the first hook 1, the second hook 2, and the third hook 3 is 120 degrees. This allows the weight of the suspended object to be evenly distributed when the three hooks grip and lift it, preventing any single hook from bearing excessive pressure and greatly improving the service life and safety of the retrieval device. In practical applications, the 120-degree angle creates a stable triangular fixing structure around the suspended object, making the grip more secure and reducing the risk of the object swaying or slipping during gripping and lifting, thus ensuring the smooth progress of the retrieval operation.

[0095] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A salvage device, characterized in that, include: First hook, second hook, and third hook; The first hook is connected to the second hook and the third hook; The third hook is connected to the first hook and the second hook; The tops of the first hook, the second hook, and the third hook are connected to the traction member; The traction member is used to pull the first hook, the second hook, and the third hook. When the force applied by the traction member to the first hook is greater than the force on the second hook and the third hook, the first hook rises vertically and the second hook and the third hook tilt downward. By tilting downward through the second hook and the third hook, the second hook and the third hook fix the suspended object from the side or bottom.

2. The salvage device according to claim 1, characterized in that, The first hook includes a first hook shank and a first claw hook; The first hook shank is connected to the second hook and the third hook; The top end of the first hook shank is connected to the traction member; The first claw hook and the end of the first hook handle are integrally formed.

3. The salvage device according to claim 2, characterized in that, The second hook includes a second hook shank and a second claw hook; The second hook handle is connected to the first hook handle and the third hook; The top end of the second hook shank is connected to the traction member; The second claw hook and the end of the second hook handle are integrally formed.

4. The salvage device according to claim 3, characterized in that, The third hook includes a third hook shank and a third claw hook; The third hook handle is connected to the first hook handle and the second hook handle; The top end of the third hook handle is connected to the traction member; The third claw hook and the end of the third hook handle are integrally formed.

5. The salvage device according to claim 4, characterized in that, The first hook handle, the second hook handle, and the third hook handle are connected by welding.

6. The salvage device according to claim 5, characterized in that, One or more of the first hook handle, the second hook handle, and the third hook handle adopt the following structure, which includes a handle body and a mounting hole; The mounting hole is located at the top of the handle; The handle is connected to the traction member through the mounting hole.

7. The salvage device according to claim 6, characterized in that, One or more of the first claw hook, the second claw hook, and the third claw hook adopt the following structure, which includes a hook body and a hook tip; One end of the hook body and the hook tip are integrally formed; The other end of the hook is integrally formed with the handle.

8. The salvage device according to claim 7, characterized in that, The arc of the hook body is greater than the arc of the hook tip.

9. The salvage device according to claim 1, characterized in that, The volume of the first hook is the same as the volume of the second hook and the third hook.

10. The salvage device according to claim 1, characterized in that, The angle between the first hook and the second and third hooks is 120 degrees.

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