Anti-dropping structure of crane hook

Abstract

The utility model belongs to the technical field of lifting hooks, and particularly relates to a crane lifting hook anti-falling structure which comprises a lifting hook body and an anti-falling stop lever, a rotating groove is formed in the inner side of the lifting hook body, a first foot twisting groove is formed in the rotating groove, one end of the anti-falling stop lever is located in the rotating groove, and a torsional spring groove is formed in the end, located in the rotating groove, of the anti-falling stop lever. A torsion spring is arranged in the torsion spring groove, two torsion feet of the torsion spring are inserted into the first torsion foot groove and the second torsion foot groove respectively, a pin shaft is arranged on the lifting hook body in a penetrating mode, the pin shaft penetrates through the anti-disengagement stop lever and the torsion spring to enable the anti-disengagement stop lever to be hinged to the lifting hook body, and the end, away from the rotating groove, of the anti-disengagement stop lever abuts against the inner side face of the lifting hook tip. The anti-falling stop lever and the torsion spring are both arranged in the rotating groove in the lifting hook body, so that the anti-falling stop lever and the torsion spring are not prone to colliding and being damaged, meanwhile, the torsion spring groove is matched with the first foot twisting groove and the second foot twisting groove, and the anti-falling stop lever and the torsion spring are installed very conveniently and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of hooks, in particular to an anti-drop structure for a crane hook. Background Art

[0002] Crane hooks are usually made of high-strength metal materials, such as high-quality alloy steel, and are carefully processed and treated to ensure that they have sufficient strength, toughness and wear resistance. Its shape is exquisitely designed, generally in the shape of a curved hook, which can stably hook heavy objects and prevent them from falling off during lifting.

[0003] For example, a new type of hook anti-unhooking device disclosed in the utility model patent with authorized patent announcement number CN219546487U is adopted, including a hook, a mounting ring is detachably provided on the main shaft of the hook, a mounting hole that can be elastically opened and closed is provided on one side of the mounting ring, the main shaft is embedded in the mounting hole, and a limiting hole is provided on the other side of the mounting ring, the limiting hole is located just above the hook angle of the hook, a connecting rod is movably embedded in the limiting hole, a lifting ring screw is provided on the end of the connecting rod away from the hook angle, and a strong magnet is provided on the end of the connecting rod close to the hook angle of the hook, the strong magnet is detachably matched with the hook angle and the mounting ring of the hook, and is fixed by magnetic attraction and its own gravity. The existing hook anti-unhooking structure is located outside the hook, and the hook is easily deformed after being hit, causing damage to the anti-unhooking structure. The common torsion spring anti-unhooking hook also has the same problem, so a crane hook anti-unhooking structure that can effectively prevent the anti-unhooking structure from being damaged is needed. Summary of the invention

[0004] In view of the above problems, the utility model proposes a crane hook anti-drop structure, which well solves the problem that the hook anti-drop structure in the prior art is easily damaged by collision.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a crane hook anti-detachment structure, comprising a hook body and an anti-detachment lever, a rotation groove is provided on the inner side of the hook body, a twist foot groove 1 is provided in the rotation groove, one end of the anti-detachment lever is located in the rotation groove, and a torsion spring groove is provided at the end of the anti-detachment lever located in the rotation groove, a twist foot groove 2 is provided in the torsion spring groove, a torsion spring is provided in the torsion spring groove, two twist feet of the torsion spring are respectively inserted into twist foot groove 1 and twist foot groove 2, a pin shaft is passed through the hook body, the pin shaft passes through the anti-detachment lever and the torsion spring to form a hinged connection with the hook body, and the end of the anti-detachment lever away from the rotation groove abuts against the inner side surface of the hook tip.

[0006] Furthermore, an installation groove is opened at the lower part of the hook tip, and a blocking block is arranged above the installation groove. The width of the installation groove is greater than the width of the anti-detachment rod, and the anti-detachment rod abuts the blocking block. The installation groove can facilitate the anti-detachment rod to pass through the installation groove and be inserted into the rotating groove, thereby facilitating the installation of the anti-detachment rod.

[0007] Furthermore, the bottom of the rotating groove is arc-shaped, and one end of the anti-detachment lever inserted into the rotating groove is provided with an arc surface, and the arc surface cooperates with the bottom of the rotating groove to facilitate the rotation of the anti-detachment lever.

[0008] Furthermore, the hook tip extends outward and protrudes from the hook body, making it easy to operate the hook to hook an object.

[0009] Furthermore, an arc-shaped hook portion is provided on the inner side of the hook body, a hanging hole is opened on the upper part of the hook body, and the center point of the hook portion is located directly below the center point of the hanging hole, so that the center of gravity of the hook body is on the same vertical line when hoisting an object.

[0010] Furthermore, an extension portion is provided between the hook portion and the hook body, and the length of the hook body is extended by the provided extension portion, so that after the hook body hoists an object, the object inside the hook body does not affect the return of the anti-slip stop rod.

[0011] Furthermore, a protective portion protruding toward the hook tip is provided on the upper portion of the hook body to enhance the structural strength and prevent deformation of the hinged portion between the anti-slip lever and the hook body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, the anti-slip lever and the torsion spring are both arranged in the rotation groove inside the hook body, so that the anti-slip lever and the torsion spring are not easy to collide and be damaged. At the same time, the anti-slip lever is restricted by the rotation groove, and is not easy to swing and cause deformation of the torsion spring when a collision occurs, so that the hook as a whole is more durable and not easy to be damaged;

[0014] At the same time, the torsion spring groove provided in the utility model cooperates with the first torsion foot groove and the second torsion foot groove, which makes it very convenient and quick to install the anti-dropping lever and the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model.

[0016] In the figure: 1. hook body; 2. anti-drop lever; 3. rotation slot; 4. twist foot slot 1; 5. torsion spring slot; 6. twist foot slot 2; 7. torsion spring; 8. pin shaft; 9. mounting slot; 10. blocking block; 11. hook and hanging part; 12. hanging hole; 13. extension part; 14. protective part. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 As shown, a crane hook anti-drop structure comprises a hook body 1 and an anti-dropping stop rod 2, a rotation groove 3 is provided on the inner side of the hook body 1, a torsion foot groove 1 4 is provided in the rotation groove 3, one end of the anti-dropping stop rod 2 is located in the rotation groove 3, a torsion spring groove 5 is provided at the end of the anti-dropping stop rod 2 located in the rotation groove 3, a torsion foot groove 2 6 is provided in the torsion spring groove 5, a torsion spring 7 is installed in the torsion spring groove 5, two torsion feet of the torsion spring 7 are respectively inserted into the torsion foot groove 1 4 and the torsion foot groove 2 6, a pin shaft hole 1 is provided on the side of the hook body 1, a pin shaft hole 2 is provided on the side of the torsion spring groove 5, when the anti-dropping stop rod 2 is located in the rotation groove 3, the pin shaft hole 1 and the pin shaft hole 2 both correspond to the inner hole of the torsion spring 7, a pin shaft 8 is penetrated through the pin shaft hole 1, the pin shaft hole 2 and the inner hole of the torsion spring 7, the pin shaft 8 makes the anti-dropping stop rod 2 hinged with the hook body 1, and the end of the anti-dropping stop rod 2 away from the rotation groove 3 abuts against the inner side surface of the hook tip.

[0019] In this embodiment, a mounting groove 9 is opened at the lower part of the hook tip, and a blocking block 10 integrally connected to the hook tip is arranged above the mounting groove 9. The width of the mounting groove 9 is greater than the width of the anti-detachment rod 2, and the anti-detachment rod 2 abuts against the lower part of the blocking block 10.

[0020] In this embodiment, the bottom of the rotation groove 3 is arc-shaped, and one end of the anti-slip lever 2 inserted into the rotation groove 3 is provided with an arc surface, which matches the bottom of the rotation groove 3 .

[0021] In this embodiment, the hook tip extends outward and protrudes from the hook body 1, and an arc-shaped chamfer is provided at one end of the hook tip extending outward.

[0022] In this embodiment, an arc-shaped hook portion 11 is provided on the inner side of the hook body 1 , a hanging hole 12 is provided on the upper portion of the hook body 1 , and the center point of the hook portion 11 is located directly below the center point of the hanging hole 12 .

[0023] In this embodiment, an extension portion 13 is integrally connected between the hook portion 11 and the hook body 1 .

[0024] In this embodiment, a protective portion 14 protruding toward the hook tip is integrally connected to the upper portion of the hook body 1 .

[0025] During production of the utility model, a torsion foot of the torsion spring 7 is inserted into the second torsion foot groove 6 provided in the torsion spring groove 5, the anti-slip lever 2 with one end of the torsion spring 7 installed is passed through the installation groove 9, the anti-slip lever 2 is abutted against the bottom of the rotating groove 3 and the other torsion foot of the torsion spring 7 is inserted into the first torsion foot groove 4, the pin 8 is sequentially passed through the inner hole of the hook body 1, the anti-slip lever 2 and the torsion spring 7 so that the anti-slip lever 2 and the hook body 1 are hinged;

[0026] When the utility model is in use, it is only necessary to push the anti-detachment barrier rod 2 to disengage the anti-detachment barrier rod 2 from the blocking block 10, and the object to be hooked can be placed in the hook body 1; when the anti-detachment barrier rod 2 is released, the anti-detachment barrier rod 2 is affected by the elastic potential energy of the torsion spring 7 to return to its original position and abut the blocking block 10, thereby preventing the hooked object from detaching from the hook body 1.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crane hook anti-drop structure, comprising a hook body and an anti-drop stopper rod, characterized in that: A rotating groove is provided on the inner side of the hook body, a twist foot groove 1 is provided in the rotating groove, one end of the anti-detachment lever is located in the rotating groove, a torsion spring groove is provided at the end of the anti-detachment lever located in the rotating groove, a twist foot groove 2 is provided in the torsion spring groove, a torsion spring is provided in the torsion spring groove, two twist feet of the torsion spring are respectively inserted into the twist foot groove 1 and the twist foot groove 2, a pin shaft is passed through the hook body, the pin shaft passes through the anti-detachment lever and the torsion spring so that the anti-detachment lever is hinged to the hook body, and the end of the anti-detachment lever away from the rotating groove abuts against the inner side surface of the hook tip.

2. The anti-drop structure for crane hook according to claim 1, characterized in that: A mounting groove is provided at the lower part of the hook tip, a blocking block is provided above the mounting groove, the width of the mounting groove is greater than the width of the anti-slip blocking rod, and the anti-slip blocking rod abuts against the blocking block.

3. The anti-drop structure for crane hook according to claim 1, characterized in that: The bottom of the rotating groove is arc-shaped, and one end of the anti-slipping lever inserted into the rotating groove is provided with an arc surface, and the arc surface cooperates with the bottom of the rotating groove.

4. The anti-drop structure for crane hook according to claim 1, characterized in that: The hook tip extends outward and protrudes from the hook body.

5. The anti-drop structure for crane hook according to claim 1, characterized in that: The inner side surface of the hook body is provided with an arc-shaped hook hanging part, and the upper part of the hook body is provided with a hanging hole, and the center point of the hook hanging part is located directly below the center point of the hanging hole.

6. The anti-drop structure for crane hook according to claim 5, characterized in that: An extension portion is arranged between the hook portion and the hook body.

7. The anti-drop structure for crane hook according to claim 5, characterized in that: The upper part of the hook body is provided with a protective part protruding toward one side of the hook tip.

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