Lifting hook device capable of automatically hooking and unhooking

Abstract

The invention relates to the field of lifting hook devices, and particularly discloses a lifting hook device capable of automatically hooking and unhooking, which comprises a mounting seat, a connecting rod structure and a lifting hook body, a sliding groove is formed in the installation base, a first installation shaft assembly is arranged in the sliding groove in a sliding fit mode, and a second installation shaft is arranged on the installation base and located on one side of the sliding groove. The connecting rod structure comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably mounted on the first mounting shaft assembly, the other end is rotatably connected with the second connecting rod, and one end, away from the first connecting rod, of the second connecting rod is rotatably mounted on the second mounting shaft; a first gravity center shaft hole and a second gravity center shaft hole are formed in the lifting hook body, the lifting hook body is rotatably mounted on the second mounting shaft through the first gravity center shaft hole, and the lifting hook body is connected with one end, facing the first connecting rod, of the second connecting rod through the second gravity center shaft hole. The lifting hook device realizes the automatic hooking and unhooking functions of the lifting hook body.

Description

Technical Field

[0001] The invention relates to the field of hook devices, in particular to a hook device capable of automatically hooking and unhooking. Background Art

[0002] The hook is the most common type of lifting device in lifting machinery, and is often suspended on the wire rope of the lifting mechanism with the help of pulleys and other components. The hook is divided into single hook and double hook according to the shape; it is divided into forged hook and laminated hook according to the manufacturing method.

[0003] Existing, a device for preventing hook rotation with patent application number 202410832036.X is provided, in which a clamping mechanism connected to the hook bracket is provided around the outer periphery of the hook, so as to mechanically fix the hook on the hook bracket.

[0004] As mentioned above, in existing lifting operations, workers need to hook and unhook manually. Manual unhooking is time-consuming and labor-intensive, and there is a risk of being hit by heavy objects or hit by the hook, which is less safe. Summary of the invention

[0005] The invention provides a hook device capable of automatically hooking and unhooking, so as to solve the technical problems in the prior art that manual unhooking is time-consuming, labor-intensive and has low safety.

[0006] In order to solve the above problems, the present invention provides a hook device capable of automatically hooking and unhooking, which adopts the following technical solution: comprising a mounting seat, a connecting rod structure, and a hook body;

[0007] The mounting seat is provided with a sliding groove, in which a first mounting shaft assembly is slidably matched, and a second mounting shaft is provided on the mounting seat at one side of the sliding groove;

[0008] The connecting rod structure includes a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is rotatably mounted on the first mounting shaft assembly, the other end of the first connecting rod is rotatably connected to the second connecting rod, and one end of the second connecting rod away from the first connecting rod is rotatably mounted on the second mounting shaft;

[0009] The hook body is provided with a first gravity axis hole and a second gravity axis hole, the hook body is rotatably mounted on the second mounting shaft through the first gravity axis hole, and the hook body is rotatably connected to an end of the second connecting rod facing the first connecting rod through the second gravity axis hole;

[0010] The hook body includes two groups, and the two groups of hook bodies are symmetrically distributed on both sides of the axis of the second installation shaft, and the two groups of hook bodies are cross-distributed. The connecting rod structure includes two groups, and the two groups of connecting rod structures are symmetrically distributed on both sides along the axis of the first installation shaft assembly, and the two groups of the first connecting rods and the two groups of the second connecting rods correspond to the two groups of hook bodies one by one respectively.

[0011] Furthermore, the hook body includes a hook head, a connecting part, and a counterweight arm. The connecting part is an arc-shaped structure. The hook head and the counterweight arm are respectively located at two ends of the connecting part. An opening is formed on one side of the connecting part, and the opening is located between the hook head and the counterweight arm. The extension direction of the counterweight wall and the extension direction of the hook head are both based on the direction of the connecting part toward one side of the opening.

[0012] Furthermore, the first center axis hole is located at the connection between the counterweight arm and the hook head, and the second center axis hole is located at an end of the counterweight arm away from the hook head.

[0013] Furthermore, the outer diameter of the hook head increases step by step along the side away from the connecting portion, and the outer wall of the hook head is configured as an arc-shaped structure.

[0014] Furthermore, the two groups of hook bodies and the two groups of connecting rod structures are respectively distributed on the front and rear sides of the mounting seat.

[0015] Furthermore, the hook body can rotate in a range of 0-45° with the first centroidal axis hole as the center, and the two groups of hook bodies rotate in opposite directions.

[0016] Furthermore, a connecting pin is provided on the first connecting rod, and the connecting pin passes through the first connecting rod, the second center of gravity axis hole, and the second connecting rod. The hook is sleeved on the outer wall of the second mounting shaft through the first center of gravity axis hole, and the end of the second connecting rod away from the connecting pin is sleeved on the outer wall of the second mounting shaft.

[0017] Furthermore, a limited track groove is provided on the side wall of the sliding groove, and the first mounting shaft assembly includes a sliding seat, an axle rod, and a sliding wheel. The sliding wheel is rotatably installed on the sliding seat, and the sliding wheel is abutted against the limited track groove. The axle rod is located on the side end face of the sliding seat facing the connecting rod structure, and the end of the first connecting rod away from the second connecting rod is sleeved on the outer wall of the axle rod.

[0018] Furthermore, the connecting rod structure also includes an elastic member, both ends of which are fixedly connected to the mounting seat and the sliding seat respectively. The elastic member is located on the side of the sliding seat away from the hook body, and the elastic member gives the first mounting shaft assembly a pulling force to slide along the side away from the hook body.

[0019] Furthermore, the vertical center axis of the shaft coincides with the vertical center axis of the second installation shaft.

[0020] The beneficial effect of the hook device capable of automatically hooking and unhooking provided by the present invention is that the hook device realizes the automatic hooking and unhooking functions of the hook body, can effectively reduce the steps and time of manual operation, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0022] Figure 1 It is a structural schematic diagram of a hook device capable of automatically hooking and unhooking according to the present invention;

[0023] Figure 2 It is a side view structural schematic diagram of a hook device capable of automatically hooking and unhooking according to the present invention;

[0024] Figure 3 It is a structural schematic diagram of a hook body of a hook device capable of automatically hooking and unhooking according to the present invention;

[0025] Figure 4 It is a schematic diagram of the matching structure of the first mounting shaft assembly and the sliding groove of a hook device capable of automatically hooking and unhooking according to the present invention;

[0026] Figure 5 The structure diagram of the automatic hooking process of a hook device capable of automatically hooking and unhooking according to the present invention is shown in FIG. Figure 1 ;

[0027] Figure 6 The structure diagram of the automatic hooking process of a hook device capable of automatically hooking and unhooking according to the present invention is shown in FIG. Figure 2 ;

[0028] Figure 7 The automatic unhooking process structure of a hook device capable of automatically hooking and unhooking of the present invention is schematically shown Figure 1 ;

[0029] Figure 8 The automatic unhooking process structure of a hook device capable of automatically hooking and unhooking of the present invention is schematically shown Figure 2 ;

[0030] Fig. 9 The automatic unhooking process structure of a hook device capable of automatically hooking and unhooking of the present invention is schematically shown Figure 3 .

[0031] Description of reference numerals:

[0032] 1. Mounting seat; 11. Sliding groove; 111. Position-limiting track groove; 12. First mounting shaft assembly; 121. Sliding seat; 122. Shaft; 123. Sliding wheel; 13. Second mounting shaft;

[0033] 2. connecting rod structure; 21. first connecting rod; 211. connecting pin; 22. second connecting rod; 23. elastic member; 231. extension plate;

[0034] 3. Hook body; 31. First gravity axis hole; 32. Second gravity axis hole; 33. Hook head; 34. Connecting part; 341. Opening; 35. Counterweight arm;

[0035] 4. Heavy object lifting shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0038] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0039] The present invention provides a hook device capable of automatically hooking and unhooking, such as Figures 1 to 9 As shown, it includes a mounting seat 1, a connecting rod structure 2, and a hook body 3.

[0040] In this embodiment, the mounting seat 1 is provided with a sliding groove 11, in which a first mounting shaft assembly 12 is slidably fitted, and a second mounting shaft 13 is provided on the mounting seat 1 at one side of the sliding groove 11;

[0041] The connecting rod structure 2 includes a first connecting rod 21 and a second connecting rod 22. One end of the first connecting rod 21 is rotatably mounted on the first mounting shaft assembly 12. The other end of the first connecting rod 21 is rotatably connected to the second connecting rod 22. The end of the second connecting rod 22 away from the first connecting rod 21 is rotatably mounted on the second mounting shaft 13.

[0042] The hook body 3 is provided with a first gravity axis hole 31 and a second gravity axis hole 32. The hook body 3 is rotatably mounted on the second mounting shaft 13 through the first gravity axis hole 31. The hook body 3 is rotatably connected to one end of the second connecting rod 22 facing the first connecting rod 21 through the second gravity axis hole 32.

[0043] The hook body 3 includes two groups, and the two groups of hook bodies 3 are symmetrically distributed on both sides of the axis of the second installation axis 13, and the two groups of hook bodies 3 are cross-distributed. The connecting rod structure 2 includes two groups, and the two groups of connecting rod structures 2 are symmetrically distributed on both sides along the axis of the first installation axis assembly 12, and the two groups of first connecting rods 21 and the two groups of second connecting rods 22 correspond to the two groups of hook bodies 3 one by one respectively.

[0044] In this embodiment, the design of the sliding groove 11 allows the first mounting shaft assembly 12 to move within a certain range, thereby driving the entire connecting rod structure 2 and the hook body 3 to move.

[0045] In this embodiment, the first mounting shaft assembly 12 slides in the sliding groove 11 and is one end connection point of the connecting rod structure 2. Through its sliding and rotation, the connecting rod structure 2 can be driven to move. The second mounting shaft 13 is fixedly mounted on the mounting seat 1 and is the other end connection point of the connecting rod structure 2 and the hook body 3. The second mounting shaft 13 not only plays a supporting role, but also enables the connecting rod structure 2 and the hook body 3 to move according to a predetermined trajectory through its fixed position. The connecting rod structure 2 is composed of a first connecting rod 21 and a second connecting rod 22, which are rotatably connected to form a whole. The design of the connecting rod structure 2 enables it to rotate according to the relative position change of the first mounting shaft assembly 12 and the second mounting shaft 13. The hook body 3 is respectively connected to the second mounting shaft 13 and the second connecting rod 22 through the first center of gravity axis hole 31 and the second center of gravity axis hole 32, allowing it to rotate around these two axes, thereby realizing the action of hooking and unhooking.

[0046] In the initial state, the two groups of hook bodies 3 are symmetrically distributed on both sides of the axis of the second installation shaft 13 and cross-distributed. This design allows the two groups of hook bodies 3 to perform hooking and unhooking actions respectively without interference.

[0047] In this embodiment, the vertical center axis of the shaft 122 coincides with the vertical center axis of the second installation shaft 13, the connecting rod mechanism and the hook body 3 are distributed along the vertical direction, and the hook device vertically lifts heavy objects.

[0048] It should be noted that, in the present embodiment, in the initial state, the hook heads 33 of the two groups of hook bodies 3 are in a crossed state. When any one of the two groups of hook bodies 3 is displaced, the other group of hook bodies 3 can be displaced with the second mounting axis 13 as the mirror line under the action of the connecting rod structure 2, thereby ensuring the synchronous displacement of the two groups of hook bodies 3.

[0049] In this embodiment, the hook body 3 includes a hook head 33, a connecting part 34, and a counterweight arm 35. The connecting part 34 is an arc-shaped structure. The hook head 33 and the counterweight arm 35 are respectively located at two ends of the connecting part 34. An opening 341 is formed on one side of the connecting part 34. The opening 341 is located between the hook head 33 and the counterweight arm 35. The extension direction of the counterweight wall and the extension direction of the hook head 33 are both based on the side direction of the connecting part 34 toward the opening 341.

[0050] In this embodiment, the connecting portion 34 is the transition portion between the hook head 33 and the counterweight arm 35. The arc-shaped structure not only enhances the overall strength of the hook body 3, but also enables the hook to better disperse stress when subjected to force, thereby avoiding local overload. The setting of the opening 341 ensures the practicality of the hook device. The counterweight arm 35 is the portion of the hook body 3 used to balance the weight of the entire device, thereby ensuring that the hook body 3 can maintain balance and stability when hanging objects.

[0051] It should be noted that the pulling force given to the first installation shaft assembly 12 by the counterweight arm 35 is smaller than the gravity of the weight suspension shaft 4 and the weight, and the pulling force given to the first installation shaft assembly 12 by the counterweight arm 35 is smaller than the gravity of the weight suspension shaft 4.

[0052] Automatic hooking process: Figure 5 , 6 As shown, Figure 5 , Figure 6 The two states are performed sequentially. When the overhead crane is lifting a heavy object, the intersection of the two sets of hook bodies 3 is placed directly above the heavy object hanging shaft 4 and perpendicular to the heavy object hanging shaft 4, and then the hook device is gradually lowered. When the intersection of the two sets of hook bodies 3 contacts the heavy object hanging shaft 4, the balance of the counterweight arms 35 of the two sets of hook bodies 3 is broken under the action of pressure, and the heavy object hanging shaft 4 squeezes the gap and enters the interior of the two sets of hook bodies 3 (that is, enters the connecting part 34 through the opening 341). Subsequently, the two sets of hook bodies 3 return to the initial intersection state under the action of the counterweight arms 35. State, the heavy object hanging shaft 4 is located at the intersection of the two groups of hook bodies 3, at this time the overhead crane lifts the hook device, the heavy object hanging shaft 4 is pressed down under the action of its own gravity, the heavy object hanging shaft 4 starts to move from the hook head 33 pressing the inner surface ring of the connecting part 34 to make the two groups of hook bodies 3 rotate, at this time the two groups of hook bodies 3 rotate counterclockwise and clockwise respectively with the second installation axis 13 as the center, the first installation axis assembly 12 slides up, the counterweight arm 35 rotates upward, and the intersection angle of the two groups of hook bodies 3 decreases, until the hook reaches the best lifting state and starts to lift the heavy object, realizing automatic hooking.

[0053] Automatic decoupling process: Figure 7 , 8 , as shown in 9, Figure 7 , Figure 8 , Fig. 9The three states are performed in sequence. When the designated location is reached, the overhead crane lowers the weight. After the weight touches the ground, the weight suspension shaft 4 rises and disengages from the hook body 3. The two groups of hook bodies 3 return to the initial crossed state under the balancing force of the counterweight arm 35. At this time, the overhead crane moves the position of the hook device so that the weight suspension shaft 4 is in the area outside the intersection of the hook heads 33, and then the hook device is raised. At this time, the weight suspension shaft 4 only squeezes the hook head 33 of a certain hook body 3. The hook head 33 is squeezed, causing the two hook bodies 3 to rotate clockwise and counterclockwise respectively with the second mounting axis 13 as the center. The first mounting axis assembly 12 slides down, the counterweight arm 35 rotates downward, and the crossing angle of the two groups of hook bodies 3 increases until a gap is generated, and the weight suspension shaft 4 is automatically unhooked.

[0054] In this embodiment, the first center axis hole 31 is located at the connection between the counterweight arm 35 and the hook head 33 , and the second center axis hole is located at an end of the counterweight arm 35 away from the hook head 33 .

[0055] In this embodiment, the first center of gravity axis hole 31 is used to connect the hook body 3 and the second mounting axis 13, allowing the hook body 3 to rotate to a certain extent around the second mounting axis 13. Since it is located at the connection between the counterweight arm 35 and the hook head 33, it can balance the torque generated when the hook head 33 hangs a heavy object, thereby ensuring the stability of the hook device; the second center of gravity axis hole 32 is used to connect the hook body 3 and the second connecting rod 22, thereby allowing the hook body 3 to automatically hook and unhook under the drive of the connecting rod structure 2. At the same time, it also helps to further balance the center of gravity of the hook device and improve the overall stability.

[0056] In this embodiment, the design of the first center of gravity axis hole 31 and the second center of gravity axis hole 32 jointly ensure the balance of the hook device when hanging heavy objects. By reasonably setting the position and spacing of the two axis holes, the hook device can better disperse the stress when subjected to force to avoid local overload. The design of the two center of gravity axis holes can also effectively improve the stability of the hook device and reduce shaking and vibration. At the same time, the design of the second center of gravity axis hole 32 also directly determines the automatic hooking and unhooking function of the hook device. Through the cooperation of the connecting rod structure 2 and the counterweight arm 35, the hook body 3 can rotate around the second center of gravity axis hole 32, thereby realizing automatic hooking and unhooking actions.

[0057] In this embodiment, the outer diameter of the hook head 33 increases step by step along the side away from the connecting portion 34. When the weight hanging shaft 4 enters the interior of the hook body 3, the movable range of the weight hanging shaft 4 can be limited to ensure the stability of the hook device, and the load-bearing capacity of the hook head 33 can also be enhanced accordingly.

[0058] In this embodiment, the outer wall of the hook head 33 is configured as an arc-shaped structure, which facilitates the heavy object hanging shaft 4 to squeeze open a gap and enter and exit the interior of the two sets of hook bodies 3.

[0059] In this embodiment, two groups of hook bodies 3 and two groups of connecting rod structures 2 are respectively distributed on the front and rear sides of the mounting seat 1, so that the hook device can better maintain balance when subjected to force. Both the front and rear hook bodies 3 can form a stable supporting structure with the mounting seat 1 through their corresponding connecting rod structures 2, thereby improving the stability of the overall device. Moreover, when lifting heavy objects, the torque generated by the heavy objects can be more evenly distributed on both sides, reducing the shaking and vibration of the device, which helps to improve the accuracy and safety of the lifting operation.

[0060] In this embodiment, the hook body 3 has a rotatable angle range of 0-45° with the first centroidal axis hole 31 as the center, which not only ensures the flexibility of the hook, but also avoids stability problems caused by excessive angles. The two groups of hook bodies 3 have opposite rotation directions, ensuring the practicality of the hook device.

[0061] In this embodiment, a connecting pin 211 is provided on the first connecting rod 21, and the connecting pin 211 passes through the first connecting rod 21, the second center of gravity axis hole 32, and the second connecting rod 22, thereby fixing and connecting these three components. The connecting pin 211 allows the first connecting rod 21, the second connecting rod 22, and the hook body 3 to rotate relative to each other. The hook is sleeved on the outer wall of the second mounting shaft 13 through the first center of gravity axis hole 31, and the end of the second connecting rod 22 away from the connecting pin 211 is sleeved on the outer wall of the second mounting shaft 13 to ensure the linkage cooperation between the connecting rod mechanism and the hook body 3. The first connecting rod 21, the second connecting rod 22, and the hook body 3 rotate relative to each other at the second center of gravity axis hole 32, thereby changing the lifting angle of the hook. At the same time, the hook itself can also rotate around the second mounting shaft 13 at a certain angle to adapt to different lifting requirements.

[0062] In this embodiment, a limited track groove 111 is provided on the side wall of the sliding groove 11, and the first mounting shaft assembly 12 includes a sliding seat 121, a shaft 122, and a sliding wheel 123. The sliding wheel 123 is rotatably mounted on the sliding seat 121, and the sliding wheel 123 is abutted against the limited track groove 111. The shaft 122 is located on the end surface of the sliding seat 121 facing the connecting rod structure 2, and one end of the first connecting rod 21 away from the second connecting rod 22 is sleeved on the outer wall of the shaft 122. In this embodiment, the shaft 122 includes two groups, and the two groups of shafts 122 are respectively located on both sides of the sliding seat 121, and correspond to the two groups of connecting rod structures 2 one by one.

[0063] In this embodiment, the setting of the sliding wheel 123 allows the sliding seat 121 (and the first mounting shaft assembly 12 connected thereto) to slide along the limiting track groove 111, and the sliding wheel 123 can reduce friction and allow smooth movement.

[0064] In this embodiment, the connecting rod structure 2 also includes an elastic member 23, the two ends of which are fixedly connected to the mounting seat 1 and the sliding seat 121, respectively. The elastic member 23 is located on the side of the sliding seat 121 away from the hook body 3, and the elastic member 23 gives the first mounting shaft assembly 12 a pulling force to slide along the side away from the hook body 3. In this embodiment, the side wall of the mounting seat 1 and the top end surface of the sliding seat 121 are both provided with extension plates 231, and the elastic member 23 is connected between the two groups of the extension plates 231. The elastic member 23 is a spring. When the hook device is performing a lifting operation, the sliding seat 121 and the first mounting shaft assembly 12 thereon will slide downward along the limiting track groove 111, and the elastic member 23 will be stretched. After the lifting operation is completed, the first mounting shaft assembly 12 can slide upward under the joint action of the counterweight arm 35 and the elastic member 23.

[0065] The present invention provides a hook device capable of automatically hooking and unhooking. The hook device realizes the automatic hooking and unhooking functions of the hook body 3 through the cooperation of the connecting rod structure 2 and the counterweight arm 35, which can effectively reduce the steps and time of manual operation and improve work efficiency.

[0066] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0067] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A hook device capable of automatically hooking and unhooking, characterized in that: It includes a mounting seat, a connecting rod structure, and a hook body; The mounting seat is provided with a sliding groove, in which a first mounting shaft assembly is slidably matched, and a second mounting shaft is provided on the mounting seat at one side of the sliding groove; The connecting rod structure includes a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is rotatably mounted on the first mounting shaft assembly, the other end of the first connecting rod is rotatably connected to the second connecting rod, and one end of the second connecting rod away from the first connecting rod is rotatably mounted on the second mounting shaft; The hook body is provided with a first gravity axis hole and a second gravity axis hole, the hook body is rotatably mounted on the second mounting shaft through the first gravity axis hole, and the hook body is rotatably connected to an end of the second connecting rod facing the first connecting rod through the second gravity axis hole; The hook body includes two groups, and the two groups of hook bodies are symmetrically distributed on both sides of the axis of the second installation shaft, and the two groups of hook bodies are cross-distributed. The connecting rod structure includes two groups, and the two groups of connecting rod structures are symmetrically distributed on both sides along the axis of the first installation shaft assembly, and the two groups of the first connecting rods and the two groups of the second connecting rods correspond to the two groups of hook bodies one by one respectively.

2. A hook device capable of automatically hooking and unhooking according to claim 1, characterized in that: The hook body includes a hook head, a connecting part, and a counterweight arm. The connecting part is an arc-shaped structure. The hook head and the counterweight arm are respectively located at two ends of the connecting part. An opening is formed on one side of the connecting part, and the opening is located between the hook head and the counterweight arm. The extension direction of the counterweight wall and the extension direction of the hook head are both based on the direction of the connecting part toward one side of the opening.

3. A hook device capable of automatically hooking and unhooking according to claim 2, characterized in that: The first center axis hole is located at the connection between the counterweight arm and the hook head, and the second center axis hole is located at an end of the counterweight arm away from the hook head.

4. A hook device capable of automatically hooking and unhooking according to claim 2, characterized in that: The outer diameter of the hook head increases step by step along the side away from the connecting portion, and the outer wall of the hook head is arranged in an arc structure.

5. A hook device capable of automatically hooking and unhooking according to any one of claims 2 to 4, characterized in that: The two groups of hook bodies and the two groups of connecting rod structures are respectively distributed on the front and rear sides of the mounting seat.

6. A hook device capable of automatically hooking and unhooking according to any one of claims 2 to 4, characterized in that: The hook body can rotate at an angle of 0-45° with the first centroidal axis hole as the center, and the two groups of hook bodies rotate in opposite directions.

7. A hook device capable of automatically hooking and unhooking according to any one of claims 2 to 4, characterized in that: A connecting pin is provided on the first connecting rod, and the connecting pin passes through the first connecting rod, the second center of gravity axis hole, and the second connecting rod. The hook is sleeved on the outer wall of the second installation shaft through the first center of gravity axis hole, and one end of the second connecting rod away from the connecting pin is sleeved on the outer wall of the second installation shaft.

8. A hook device capable of automatically hooking and unhooking according to any one of claims 2 to 4, characterized in that: A limited track groove is provided on the side wall of the sliding groove. The first mounting shaft assembly includes a sliding seat, an axle rod, and a sliding wheel. The sliding wheel is rotatably installed on the sliding seat. The sliding wheel is abutted against the limited track groove. The axle rod is located on the side end face of the sliding seat facing the connecting rod structure. One end of the first connecting rod away from the second connecting rod is sleeved on the outer wall of the axle rod.

9. A hook device capable of automatically hooking and unhooking according to claim 8, characterized in that: The connecting rod structure also includes an elastic member, the two ends of which are fixedly connected to the mounting seat and the sliding seat respectively. The elastic member is located on the side of the sliding seat away from the hook body, and the elastic member gives the first mounting shaft assembly a pulling force to slide along the side away from the hook body.

10. The hook device capable of automatically hooking and unhooking according to claim 8, characterized in that: The vertical center axis of the shaft coincides with the vertical center axis of the second installation shaft.

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