Hook device and hoisting method

Abstract

The present invention discloses a hook device and a hoisting method, which relates to the field of lifting and hoisting, and includes a hook body, which has at least one semi-enclosed hook cavity for hanging objects, and a first connecting end and a second connecting end located on both sides of the hook cavity; a movable hook tongue, one end of which is a positioning end and movably connected to the first connecting end, and the other end is a free end, which is used to open and close the hook cavity; a connecting component, the bottom of which is detachably connected to the second connecting end, and the connection is provided with at least one limiting groove located on the movable path of the free end of the movable hook tongue, and the hook tip located at the free end of the movable hook tongue can be completely accommodated in the limiting groove; a locking component, which is axially sleeved outside the connecting component, and opens and closes the limiting groove by moving up and down along the connecting component; a hanging component, which is fixedly connected to the top of the connecting component, and is used to connect an external sling. The present invention provides a novel hook device and a hoisting method thereof, which has a simpler structure, is easy to operate, has higher safety, is not easy to deform, and has high reliability.

Description

Technical Field

[0001] The invention relates to the field of lifting and hoisting, and in particular to a hook device and a hoisting method. Background Art

[0002] At present, mooring reinforcement requires a variety of connection methods, so the requirements for the form of the connection device components are also increasing. At this stage, the connection device is mainly a traditional single hook structure, which can only achieve single-point mooring connection at both ends. The safety device of the traditional hook is a torsion spring baffle combination structure. By installing the torsion spring, the baffle and the pin shaft at the traditional hook body, the baffle is pressed against the inside of the hook head under the rebound force of the torsion spring to prevent the risk of the moored object from being unhooked. However, this structure has low resistance to accidental impact loads and is used less frequently. It is easy to deform after multiple uses, which will cause the torsion spring to be damaged after deformation, and even the safety card cannot be opened, and the moored object cannot be smoothly removed from the hook cavity. In addition, the principle of this type of safety structure is to press the baffle against the inside of the hook head, so the baffle occupies part of the space of the hook cavity, resulting in a reduction in the load-bearing volume of the hook cavity itself. Therefore, the safety and reliability of the traditional hook connection are poor. Summary of the invention

[0003] In order to solve the technical problems in the background technology, the present invention provides a hook device with simple structure, high safety, not easy to deform, strong reliability, and larger effective hanging volume of the hook cavity.

[0004] The present invention adopts the following technical scheme: a hook device comprises a hook body, having at least one semi-enclosed hook cavity for hanging objects and a first connecting end and a second connecting end located on both sides of the hook cavity; a movable hook tongue, one end of which is a positioning end and is movably connected to the first connecting end, and the other end is a free end for opening and closing the hook cavity; a connecting component, the bottom of which is detachably connected to the second connecting end, and the connection is provided with at least one limiting groove located on the movable path of the free end of the movable hook tongue, and the hook tip located at the free end of the movable hook tongue can be completely accommodated in the limiting groove; a locking component, axially sleeved outside the connecting component, and opening and closing the limiting groove by moving up and down along the connecting component; a hanging component, fixedly connected to the top of the connecting component, for connecting an external sling.

[0005] As an optimization scheme, the locking component includes a locking sleeve axially sleeved outside the connecting component, and a compression spring vertically arranged in the gap between the locking sleeve and the connecting component, the height of the locking sleeve is greater than or equal to the height of the connecting component, and at least two compression springs are installed and symmetrically arranged; when installed, the bottom of the locking sleeve can be abutted against the upper end surface of the top of the second connecting end, and the top can extend upward along the top of the connecting component; the bottom of the compression spring is abutted against the inner extension edge arranged at the bottom of the locking sleeve, and the top is abutted against the outer extension edge arranged at the top of the connecting component, and the compression spring presses the bottom of the locking sleeve downward so that the locking sleeve closes the hook tip of the free end of the movable hook tongue in the limiting groove.

[0006] As an optimization solution, the locking component is a movable sleeve with an internal thread on the inner wall, the height of the movable sleeve is less than or equal to the height of the connecting component, and the outer wall of the connecting part is matched with an external thread; when installed, the bottom of the movable sleeve can be abutted against the upper end surface of the top of the second connecting end, and the top can be abutted against the outer extension edge of the top of the connecting component. The movable sleeve opens and closes the limit groove by rotating up and down along the axial direction of the connecting component.

[0007] As an optimization solution, the top edge of the locking component is provided with an anti-skid outer edge, and the outer wall is provided with an anti-skid mesh pattern.

[0008] As an optimization scheme, the hook body is in a mountain shape, including a pair of hook cavities symmetrically arranged, a pair of left and right horizontally arranged first connecting ends and a vertically arranged second connecting end, and the pair of hook cavities are located between the first connecting end and the second connecting end; the movable hook tongue is matched with two groups, and is respectively movably riveted to the positioning ends of the pair of first connecting ends; the top of the second connecting end is provided with a connecting head with an external thread, which is used for threaded connection with the internal screw hole located at the bottom of the connecting component, and the top side wall of the second connecting end is grooved to form a part of the limiting groove, and the outer wall of the lower part of the connecting component near the internal screw hole is provided with a penetrating pin hole, and the connecting head is provided with a matching connecting hole for installing an elastic cylindrical pin.

[0009] As an optimization solution, the overall structure of the movable hook tongue is swan-shaped, and the thickness of the hook tip at the free end of the movable hook tongue is smaller than the depth of the limiting groove.

[0010] As an optimization solution, the suspension component includes a main lifting ear and a matching auxiliary lifting ear. The inner wall of the lifting ear hole of the main lifting ear is provided with an internal thread. A safety pin is threadedly connected between the main lifting ear and the auxiliary lifting ear, and the safety pin is hung on one side of the suspension component.

[0011] The present invention also provides a hoisting method using the above-mentioned hook device, comprising the following steps:

[0012] S1: Push the locking component until the limit slot is fully opened and held;

[0013] S2: insert the connecting end of the hanging object through the movable hook tongue into the hook cavity of the hook body;

[0014] S3: The locking component is turned, and the locking component seals the hook tip of the movable hook tongue in the limiting groove;

[0015] S4: Place the connecting end of the external lifting device between the main lifting lug and the auxiliary lifting lug, install the safety pin and then lift;

[0016] S5: When landing, push the locking component until the limit slot is fully opened and maintained;

[0017] S6: Remove the connecting end of the hanging object from the hook cavity of the hook body;

[0018] S7: Move the locking component to close the limit groove and remove the hook device.

[0019] As an optimization solution, the locking component includes a locking sleeve axially sleeved outside the connecting component, and a compression spring vertically arranged in the gap between the locking sleeve and the connecting component, and the height of the locking sleeve is greater than or equal to the height of the connecting component; when installed, the bottom of the locking sleeve can be abutted against the upper end surface of the top of the second connecting end, and the top can extend upward along the top of the connecting component; the bottom of the compression spring is abutted against the inner extension edge arranged at the bottom of the locking sleeve, and the top is abutted against the outer extension edge arranged at the top of the connecting component; the locking sleeve is pushed upward to squeeze the compression spring and open the limit groove; the locking sleeve is released downward to close the limit groove.

[0020] As an optimization solution, the locking component is a movable sleeve with an internal thread on the inner wall, the height of the movable sleeve is less than or equal to the height of the connecting component, and the outer wall of the connecting component is matched with an external thread; when installing, the bottom of the movable sleeve can be abutted against the upper end surface of the top of the second connecting end, and the top can be abutted against the outer extension edge of the top of the connecting component; the limit groove is opened by rotating the movable sleeve upward; and the limit groove is closed by rotating the movable sleeve downward.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] The present invention adopts a locking component that is axially sleeved outside the connecting component and moves up and down along the connecting component to open and close the limiting groove. When the locking component is pushed upward, the hook tongue leaks out as a whole, the hook tongue is opened, and the hanging object is hung; after the hanging object is hung, the hook tongue is placed in its limiting groove, and the locking component is released downward, so that the hook tongue can be quickly and completely covered to achieve the limiting of the hook tongue and prevent the risk of the hanging object being unhooked. The structure is simple, and the structure has a certain impact load resistance strength, solves the problem that the traditional spring baffle insurance card is easy to deform, and the hanging object is not easy to be unhooked after deformation, thereby improving safety.

[0023] The overall structure of the movable hook tongue of the present invention is swan-shaped, which ensures that the hook cavity has a maximum effective volume, does not affect the hook cavity hanging volume, and has higher efficiency.

[0024] The present invention can simultaneously connect hook bodies with multiple hook cavities, thus solving the problem that one end needs double hanging points or multiple hanging points, and has more functions and stronger practicality.

[0025] The present invention hangs the safety pin on one side of the device, thereby avoiding the risk of loss in a non-working state, and reducing parts such as nuts and washers, making the structure simpler and the operation more convenient.

[0026] The invention adopts the method for hoisting by the hook device, which can hoist and unload the hanging objects more quickly, has a faster response speed, and improves production efficiency; at the same time, the hanging objects are not easy to be unhooked, and the safety is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the hook device of the present invention;

[0028] Figure 2 It is a cross-sectional view of the first embodiment of the hook device of the present invention;

[0029] Figure 3 It is a schematic diagram of the connection relationship between the connecting component and the locking component in the first embodiment of the hook device of the present invention;

[0030] Figure 4 This is a schematic diagram of the connection relationship between the connecting component and the locking component in the second embodiment of the hook device of the present invention;

[0031] Figure 5 It is a schematic diagram of the connection relationship between the connecting component and the hook body in the hook device of the present invention;

[0032] Among them, 1-hook body, 11-hook cavity, 12-first connecting end, 13-second connecting end, 2-movable hook tongue, 3-connecting component, 31-limiting groove, 4-locking component, 41-locking sleeve, 42-compression spring, 43-anti-slip outer edge, 44-anti-slip mesh, 45-movable sleeve, 5-suspension component, 51-main lifting ear, 52-auxiliary lifting ear, 53-safety pin. DETAILED DESCRIPTION

[0033] In order to facilitate those skilled in the art to understand the technical solution of the present invention, further description will be given below with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0034] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and techniques are omitted to avoid unnecessary confusion of concepts of the present invention.

[0035] like Figure 1 and 2 As shown, the hook device provided by the present invention includes five parts: a hook body 1, a movable hook tongue 2, a connecting part 3, a locking part 4 and a hanging part 5. The movable hook tongue 2 has at least one semi-enclosed hook cavity 11 for hanging objects, and a first connecting end 12 and a second connecting end 13 located on both sides of the hook cavity 11, so that multiple hanging points can be achieved at one end. One end of the movable hook tongue 2 is a positioning end and is movably connected to the first connecting end 12, and the other end is a free end. The free end of the movable hook tongue 2 rotates within a certain range with the positioning end and the connection with the first connecting end 12 as the center of the circle, and is used to open and close the hook cavity. The bottom of the connecting component 3 is detachably connected to the second connecting end 13, and at least one limiting groove 31 is provided on the movable path of the free end of the movable hook tongue 2 at the connection between the two. The number of the limiting grooves 31 is consistent with the number of the movable hook tongues 2. The hook tip 21 located at the free end of the movable hook tongue 2 can be completely accommodated in the limiting groove 31. The locking component 4 is axially sleeved outside the connecting component 3, and the limiting groove 31 is opened and closed by moving up and down along the connecting component 3. The hanging component 5 is fixedly connected to the top of the connecting component 3 for connecting an external sling.

[0036] The present invention provides a hoisting method using the hook device, comprising the following steps:

[0037] Step 1: Move the locking component 4 until the limiting groove 31 is fully opened and maintained;

[0038] Step 2: Insert the connecting end of the hanging object through the movable hook tongue 2 into the hook cavity of the hook body;

[0039] Step 3: Move the locking component 4, so that the locking component 4 seals the hook tip 21 of the movable hook tongue 2 in the limiting groove 31;

[0040] Step 4: connect the connecting end of the external lifting device to the hanging component 5 and then lift it;

[0041] Step 5: When landing, push the locking component 4 until the limiting groove 31 is fully opened and maintained;

[0042] Step 6: Remove the connecting end of the hanging object from the hook cavity 11 of the hook body 1;

[0043] Step 7: Move the locking component 4 to close the limiting groove 31 and remove the hook device.

[0044] The method of hoisting using the hook device can hoist and unload the hanging objects more quickly, with a faster response speed and improved production efficiency; at the same time, the hanging objects are not easy to be unhooked, and the safety is higher.

[0045] Embodiment 1:

[0046] like Figure 2 and Figure 3 As shown, the locking component 4 includes a lock sleeve 41 axially sleeved outside the connecting component, and a vertically arranged compression spring 42 located in the gap between the lock sleeve 41 and the connecting component 3. The height of the lock sleeve 41 is greater than or equal to the height of the connecting component 3, so that the compression spring 42 completely covers the gap. During installation, the bottom of the lock sleeve 41 can abut against the upper end surface of the top of the second connecting end 13, and the top of the lock sleeve 41 can extend upward along the top of the connecting component 3; the bottom of the compression spring 42 abuts against the inner extension edge set at the bottom of the lock sleeve 41, and the top of the compression spring 42 abuts against the outer extension edge set at the top of the connecting component 3. The compression spring 42 presses the bottom of the lock sleeve 41 downward so that the lock sleeve 41 closes the hook tip 21 of the free end of the movable hook tongue 2 in the limiting groove 31.

[0047] In this embodiment, at least two compression springs 42 are installed and symmetrically arranged in the gap between the locking sleeve 41 and the connecting component 3 to ensure that the two ends of the locking sleeve 41 are evenly stressed.

[0048] A compression spring 43 is placed inside the lock sleeve 41, and the lock sleeve 41 cooperates with the compression spring 43 to operate. By compressing and releasing the compression spring 43, the limit fixing and release functions of the movable hook tongue 2 are realized. This locking method has a certain impact load resistance strength, the locking component is not easy to deform, the reliability is improved, the hanging objects can be hoisted and unloaded more quickly, the response speed is faster, and the production efficiency is improved; at the same time, the hanging objects are not easy to be unhooked, and the safety is higher.

[0049] The top edge of the lock sleeve 41 is provided with an anti-skid outer edge 43, and the outer wall is provided with an anti-skid mesh 44. The upper end adopts a protruding outer edge structure to prevent the hand from slipping out of the lock sleeve 41 when the lock sleeve 41 is adjusted by the hand, providing a blocking effect; the outer wall surface of the lock sleeve 41 adopts an anti-skid mesh 44 to increase friction, just to facilitate manual adjustment of the lock sleeve 41.

[0050] like Figure 2 and Figure 5As shown, in this embodiment, the hook body 1 is in a mountain shape, which meets the requirement of double hanging points at one end during the lifting process. The hook body 1 includes a pair of hook cavities 11 symmetrically arranged, a pair of left and right horizontally arranged first connecting ends 12 and a vertically arranged second connecting end 13, and the pair of hook cavities 11 are located between the first connecting end 12 and the second connecting end 13; the movable hook tongue 2 is matched with two groups, and is riveted to the pair of first connecting ends 12 respectively, to ensure the flexible rotation of the free end of the movable hook tongue 2; the top of the second connecting end 13 is provided with a connecting head 14 with an external thread, which is used to be threadedly connected to the internal screw hole 32 located at the bottom of the connecting component 3, and the top side wall of the second connecting end 13 is grooved to form a part of the limit groove.

[0051] like Figure 5 As shown, in this embodiment, a through pin hole 33 is provided on the outer wall of the lower part of the connecting component 3 near the inner screw hole 32, and a matching connecting hole 15 is provided on the connecting head 14 for installing an elastic cylindrical pin 16. The top of the second connecting end 13 of the hook body 1 is connected to the inner screw hole 32 of the connecting component 3 through an external thread structure, and after being screwed into place, an elastic cylindrical pin is inserted into the pin hole 33 of the connecting component 3 and the connecting hole 15 on the connecting head 14 to fix the two, which can further prevent the connection between the two from loosening, and has higher safety performance.

[0052] like Figure 5 As shown, in this embodiment, the movable hook tongue 2 is divided into two parts, left and right. In order to cooperate with the connection with the hook body 1 and ensure the maximum volume of the hook cavity, the movable hook tongue 2 is L-shaped, the positioning end of the movable hook tongue 2 is riveted to the first connecting end 12, and the head of the free end of the movable hook tongue 2 is bent and extended to form a hook tip 21, so that the overall structure of the movable hook tongue 2 is swan-shaped. The movable hook tongue 2 is set to a certain thickness value, so that it has a certain shear and bending resistance strength, improves its own safety, and the thickness at the hook tip 21 is less than the depth of the limiting groove 31, ensuring that the hook tip 21 can enter the limiting groove 31, and realize safe and effective prevention of the escape of the hanging object. When the lock sleeve 41 compresses the compression spring 43 upward, the movable hook tongue 2 is released and unfolded; when the hook tip 21 of the free end of the movable hook tongue 2 is placed in the limiting groove 31, and the lock sleeve 41 releases the compression spring 43 downward, the fixed limit of the movable hook tongue 2 is realized to prevent the hanging object in the hook cavity from escaping. The riveting method of the movable hook tongue 2 and the hook body 1 also facilitates the replacement of the movable hook tongue 2 in the future.

[0053] like Figure 1 As shown, the suspension component 5 includes a main lifting ear 51 and a matching auxiliary lifting ear 52. The inner wall of the lifting ear hole of the main lifting ear 51 is provided with an internal thread. A safety pin 53 is threadedly connected between the main lifting ear 51 and the auxiliary lifting ear 52 to facilitate the connection of external lifting equipment. The safety pin 53 is hung on one side of the suspension component 5 to avoid the risk of loss in a non-working state. At the same time, parts such as nuts and washers are reduced, making the structure simpler and more convenient to operate.

[0054] The installation process of this embodiment is to weld the main lifting ear 51 and the auxiliary lifting ear 52 installed in conjunction with it to the top of the connecting part 3, install the compression spring 42 at the lower end of the connecting part 3 and put the lock sleeve 41 on the lower end, then thread the external thread of the connecting head 14 of the hook body 1 with the internal thread hole 32 of the connecting part 3 and install them in place, and then install the elastic cylindrical pin 16 to prevent the threads of the connecting part 3 and the hook body 1 from loosening. Finally, the movable hook tongue 2 is riveted to the first connecting end 12 of the hook body 1 with a flat head rivet, and the installation is completed.

[0055] The present invention adopts a locking component 4 with a built-in compression spring 42, combined with a limiting groove 31 provided inside. When the lock sleeve 41 of the locking component 4 is pushed upward, the hook tongue 1 is leaked out as a whole, the hook tongue 1 is opened, and the hanging object is hung; after the hanging object is hung, the hook tongue 1 is placed in its limiting groove 31, and the lock sleeve 41 is released. Under the action of the compression spring 42, the lock sleeve 41 can quickly cover the hook tongue 1 to limit the hook tongue 1 and prevent the risk of the hanging object being unhooked. The structure is simple and has a certain impact load resistance strength. The problem that the traditional spring baffle insurance card is easy to deform and the hanging object is not easy to be unhooked after deformation is solved, thereby improving safety. The overall structure of the movable hook tongue 2 is swan-shaped, which ensures that the hook cavity 11 has a maximum effective volume, does not affect the hook cavity 11 hanging volume, and has higher efficiency. The present invention can simultaneously connect a hook body 1 with multiple hook cavities 11, which solves the problem that one end requires double hanging points or multiple hanging points. It has more functions and is more practical. The present invention hangs the safety pin 51 on one side of the device, avoiding the risk of loss in a non-working state, while reducing parts such as nuts and washers, making the structure simpler and more convenient to operate. The hook device can be widely used in various machinery and vehicles for rapid mooring and connection during railway, highway, waterway, and air transportation.

[0056] The hoisting method for the structure of the first embodiment includes the following steps:

[0057] Step 1: Push the lock sleeve 41 upward to press the compression spring 42 upward until the limiting groove 31 is fully opened and held, so that the compression spring 42 is in a compressed state;

[0058] Step 2: Insert the connecting end of the hanging object through the movable hook tongue 2 into the hook cavity of the hook body;

[0059] Step 3: Loosen the lock sleeve 41, and the lock sleeve 41 seals the hook tip 21 of the movable hook tongue 2 in the limiting groove 31;

[0060] Step 4: connect the connecting end of the external lifting device to the hanging component 5 and then lift it;

[0061] Step 5: When the user lands on the ground, the lock sleeve 41 is pushed upward to squeeze the compression spring 42 upward until the limiting groove 31 is fully opened and held;

[0062] Step 6: Remove the connecting end of the hanging object from the hook cavity 11 of the hook body 1;

[0063] Step 7: Loosen the locking sleeve 41 to close the limiting groove 31 and remove the hook device.

[0064] Embodiment 2:

[0065] like Figure 4 As shown, the locking component 4 in the first embodiment can also be an active sleeve 45 with an internal thread on the inner wall, the height of the active sleeve 45 is less than or equal to the height of the connecting component 3, and the outer wall of the connecting component 3 is matched with an external thread. When installed, the bottom of the active sleeve 45 can be abutted against the upper end surface of the top of the second connecting end 13, and the top can be abutted along the outer extension edge of the top of the connecting component 3. The active sleeve 45 is rotated up and down along the axial direction of the connecting component 3 to open and close the limiting groove 31. The active sleeve 45 closes the hook tip 21 of the free end of the active hook tongue 2 in the limiting groove 31, and the active sleeve 45 is rotated to realize the limiting fixation and release function of the active hook tongue 2. This locking method makes it more convenient for the operator to control the up and down moving distance of the active sleeve 45, and the operation is more flexible. At the same time, it has greater impact load resistance, and the locking component is not easy to deform, which improves stability and reliability, can more quickly hoist and unload the hanging objects, improves production efficiency, and the hanging objects are not easy to unhook, which has higher safety.

[0066] The installation process of this embodiment is to weld the main lifting ear 51 and the auxiliary lifting ear 52 installed in matching manner to the top of the connecting part 3, screw the movable sleeve 45 upward from the lower end of the connecting part 3, and then screw the external thread of the connecting head 14 of the hook body 1 to the internal screw hole 32 of the connecting part 3 and install them in place, and then install the elastic cylindrical pin 16 to prevent the threads of the connecting part 3 and the hook body 1 from loosening. Finally, the movable hook tongue 2 is riveted to the first connecting end 12 of the hook body 1 with a flat head rivet, and the installation is completed.

[0067] The top edge of the movable sleeve 45 is also provided with an anti-skid outer edge 43, and the outer wall is provided with an anti-skid mesh 44. The upper end adopts a protruding outer edge structure to prevent the hand from slipping out of the movable sleeve 45 when the movable sleeve 45 is screwed up and down, providing a blocking effect; the outer wall surface of the movable sleeve 45 adopts an anti-skid mesh 44 to increase friction and facilitate manual adjustment of the movable sleeve 45.

[0068] The hoisting method for the structure of the second embodiment includes the following steps:

[0069] Step 1: Rotate the movable sleeve 45 upward until the limiting groove 31 is fully opened and held;

[0070] Step 2: Insert the connecting end of the hanging object through the movable hook tongue 2 into the hook cavity of the hook body;

[0071] Step 3: Rotate the movable sleeve 45 downward, and the locking sleeve 41 seals the hook tip 21 of the movable hook tongue 2 in the limiting groove 31;

[0072] Step 4: connect the connecting end of the external lifting device to the hanging component 5 and then lift it;

[0073] Step 5: When landing, rotate the movable sleeve 45 upward until the limiting groove 31 is fully opened and held;

[0074] Step 6: Remove the connecting end of the hanging object from the hook cavity 11 of the hook body 1;

[0075] Step 7: Rotate the movable sleeve 45 downward to close the limiting groove 31 and remove the hook device.

[0076] The above embodiments are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A hook device, characterized in that: Comprising: A hook body (1) having at least one semi-enclosed hook cavity (11) for hanging an object and first and second connection ends (12, 13) located on both sides of the hook cavity (11); A movable hook tongue (2) with one end being a positioning end and movably connected to the first connection end (12), and the other end being a free end for opening and closing the hook cavity (11); A connecting component (3) with its bottom detachably connected to the second connection end (13), and at least one limiting groove (31) is provided at the connection part and located on the moving path of the free end of the movable hook tongue (2), and the hook tip (21) at the free end of the movable hook tongue (2) can be completely received in the limiting groove (31); A locking component (4) axially sleeved outside the connecting component (3), and the limiting groove (31) is opened and closed by moving up and down along the connecting component (3); A hanging component (5) fixedly connected to the top of the connecting component (3) for connecting an external sling; The locking component (4) includes a lock sleeve (41) axially sleeved outside the connecting component (3) and a vertically arranged compression spring (42) located in the gap between the lock sleeve (41) and the connecting component (3). The height of the lock sleeve (41) is greater than or equal to the height of the connecting component (3), and at least two compression springs (42) are symmetrically arranged; during installation, the bottom of the lock sleeve (41) can abut against the upper end surface of the top of the second connection end (13), and the top can extend upward along the top of the connecting component (3); the bottom of the compression spring (42) abuts against the inner extension edge provided at the bottom of the lock sleeve (41), and the top abuts against the outer extension edge provided at the top of the connecting component (3). The compression spring (42) presses down on the bottom of the lock sleeve (41) to close the hook tip (21) at the free end of the movable hook tongue (2) in the limiting groove (31); The top edge of the locking component (4) is provided with an anti-slip extension edge (43), and the outer wall is provided with anti-slip mesh patterns (44); The hook body (1) is in a mountain shape, including a pair of symmetrically arranged hook cavities (11), a pair of horizontally arranged first connection ends (12) on the left and right and a vertically arranged second connection end (13). The pair of hook cavities (11) are located between the first connection end (12) and the second connection end (13); two sets of the movable hook tongues (2) are provided in a matching manner and are respectively movably riveted to the pair of first connection ends (12); the top of the second connection end (13) is provided with a connection head (14) with an external thread for threaded connection with an internal screw hole (32) located at the bottom of the connecting component (3). A part of the limiting groove (31) is formed by grooving on the side wall of the top of the second connection end (13). A through pin hole (33) is provided on the outer wall of the lower part of the connecting component (3) near the internal screw hole (32), and a matching connection hole (15) is provided on the connection head (14) for installing an elastic cylindrical pin (16); The movable hook tongue (2) is L-shaped and its overall structure is swan-shaped. The thickness of the hook tip (21) at the free end of the movable hook tongue (2) is less than the depth of the limiting groove (31). The movable hook tongue (2) is riveted to the first connecting end (12) of the hook body (1) by a flat-head rivet.

2. The hook device according to claim 1, characterized in that: The suspension component (5) comprises a main lifting ear (51) and a matching auxiliary lifting ear (52); the inner wall of the lifting ear hole of the main lifting ear (51) is provided with an internal thread; a safety pin (53) is threadedly connected between the main lifting ear (51) and the auxiliary lifting ear (52); and the safety pin (53) is hung on one side of the suspension component (5).

3. A method of lifting, using the hook device as claimed in claim 1, comprising the following steps: S1: Move the locking component (4) until the limiting groove (31) is fully opened and maintained; S2: inserting the connecting end of the hanging object through the movable hook tongue (2) into the hook cavity of the hook body; S3: The locking component (4) is moved, and the locking component (4) seals the hook tip (21) of the movable hook tongue (2) in the limiting groove (31); S4: connecting the connecting end of the external lifting device to the hanging component (5) and then lifting; S5: When landing, the locking component (4) is moved until the limiting groove (31) is fully opened and maintained; S6: Remove the connecting end of the hanging object from the hook cavity (11) of the hook body (1); S7: Move the locking member (4) to close the limit groove (31) and remove the hook device; The locking component (4) comprises a locking sleeve (41) axially sleeved outside the connecting component (3), and a compression spring (42) vertically arranged in the gap between the locking sleeve (41) and the connecting component (3); the height of the locking sleeve (41) is greater than or equal to the height of the connecting component (3); at least two compression springs (42) are installed and symmetrically arranged; when installed, the bottom of the locking sleeve (41) can abut against the upper end surface of the top of the second connecting end (13), and the top can extend upward along the top of the connecting component (3); the bottom of the compression spring (42) abuts against the inner extension edge arranged at the bottom of the locking sleeve (41), and the top abuts against the outer extension edge arranged at the top of the connecting component (3); by pushing the locking sleeve (41) upward, the compression spring (42) is pressed upward to open the limiting groove (31); by releasing the locking sleeve (41) downward, the limiting groove (31) is closed.

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