Anti-unhooking device for crane lifting hook

Abstract

The utility model discloses a crane lifting hook anti-unhooking device which comprises a connecting mechanism arranged above a lifting hook body, side plates symmetrically arranged above the opening side of the lifting hook body, a rotating shaft arranged on a side plate support, a rotating sleeve arranged on the rotating shaft, an anti-tripping buckle arranged on the side face of the rotating sleeve, an adaptive arc edge arranged at one end of the anti-tripping buckle, and a connecting rod arranged on the anti-tripping buckle and close to the rotating sleeve. A balance weight lever is arranged between the connecting rods, and a locking mechanism is arranged on the lifting hook body above the balance weight lever; according to the utility model, the anti-tripping buckle is automatically clung to the opening hook mouth of the lifting hook body by utilizing the lever principle, and the fitting range of the anti-tripping buckle and the lifting hook body is increased by arranging the adaptive arc edge, so that unhooking can be effectively avoided; and meanwhile, through the arrangement of the locking mechanism, the risk of unhooking caused by gaps of the anti-tripping buckle due to vibration and swinging of the locked balance weight lever is avoided, the overall structure is simple, the phenomenon of erosion failure is avoided, and the safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting hooks, in particular to an anti - decoupling device for a traveling crane hook. Background Art

[0002] Existing anti - decoupling devices are made of spring - loaded thin iron sheets or springs. After long - term repeated use, metal fatigue will occur. Moreover, when used outdoors or in workshops, they are vulnerable to damage by rainwater and some slightly corrosive environmental factors, which affects the service life of the anti - decoupling device and the safety of normal lifting operations. Therefore, the utility model proposes an anti - decoupling device for a traveling crane hook to solve the problems existing in the prior art. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to propose an anti - decoupling device for a traveling crane hook. This anti - decoupling device for a traveling crane hook uses the lever principle to make the anti - decoupling automatically press tightly against the opening hook mouth of the hook body. The setting of the adapted arc edge increases the fitting range between the anti - decoupling and the hook body, which can effectively avoid decoupling. At the same time, the setting of the locking mechanism makes the counterweight rod not vibrate or swing after being locked, avoiding the risk of decoupling caused by the gap due to the vibration and swing of the anti - decoupling. The overall structure is simple and there will be no erosion failure phenomenon, greatly improving the safety.

[0004] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: An anti - decoupling device for a traveling crane hook includes a hook body, a connecting mechanism, side plates, a rotating shaft, an anti - decoupling mechanism, and a locking mechanism. A connecting mechanism is arranged above the hook body. Symmetrically fixed and welded side plates are arranged above the opening side of the hook body. A rotating shaft penetrates between the side plates. The anti - decoupling mechanism includes a rotating sleeve, an anti - decoupling, an adapted arc edge, a connecting rod, and a counterweight rod. A rotating sleeve is sleeved on the rotating shaft. An anti - decoupling is fixedly welded on the side of the rotating sleeve. One end of the anti - decoupling is provided with an adapted arc edge. A connecting rod is fixedly welded on the anti - decoupling near the rotating sleeve. A counterweight rod is welded between the connecting rods. A locking mechanism is arranged on the hook body above the counterweight rod.

[0005] Further improvement lies in that: The adapted arc edge corresponds to and adapts to the opening hook mouth of the hook body, increasing the fitting range. The connecting rod is arranged perpendicular to the plane of the anti - decoupling, realizing the lever principle to press the anti - decoupling against the inner side of the opening hook mouth of the hook body.

[0006] Further improvement lies in that: The connecting mechanism includes a rotating limit ring, a connecting seat, an adapted card slot, and a steel cable connecting shaft. A rotating limit ring is fixedly welded above the hook body. An adapted card slot is arranged on the lower side of the connecting seat. The rotating limit ring is rotationally adapted to the adapted card slot. A steel cable connecting shaft is fixedly arranged above the connecting seat.

[0007] A further improvement lies in that: the locking mechanism includes an inclined fixed seat, a telescopic groove, a telescopic clamping plate and an adsorption magnet. The inclined fixed seat is fixedly welded to the opposite side of the opening of the hook body. The telescopic groove is arranged in the inclined fixed seat. The telescopic clamping plate is movably arranged in the telescopic groove. The adsorption magnet is embedded at the end of the telescopic groove.

[0008] A further improvement lies in that: a through groove is arranged on the inclined fixed seat, and a lever is fixedly welded above the end of the telescopic clamping plate and extends out of the through groove.

[0009] The beneficial effects of the present utility model are as follows: the present utility model utilizes the lever principle to make the anti-disengagement buckle automatically tightly adhere to the hook mouth at the opening of the hook body. The setting of the adapted arc edge increases the fitting range between the anti-disengagement buckle and the hook body, which can effectively avoid hook disengagement. At the same time, the setting of the locking mechanism makes the counterweight rod not vibrate or swing after being locked, avoiding the risk of hook disengagement caused by the gap due to the vibration and swing of the anti-disengagement buckle. The overall structure is simple and there will be no erosion failure phenomenon, greatly improving the safety. Description of the Drawings

[0010] Figure 1 is the front view structure diagram of the present utility model.

[0011] Figure 2 is the front view cross-sectional view of the present utility model.

[0012] Figure 3 is the side view structure diagram of the anti-disengagement hook mechanism of the present utility model.

[0013] Among them: 1. Hook body; 2. Side plate; 3. Rotating shaft; 4. Rotating sleeve; 5. Anti-disengagement buckle; 6. Adapted arc edge; 7. Connecting rod; 8. Counterweight rod; 9. Rotating limit ring; 10. Connecting seat; 11. Adapted card slot; 12. Cable connecting shaft; 13. Inclined fixed seat; 14. Telescopic groove; 15. Telescopic clamping plate; 16. Adsorption magnet; 17. Through groove; 18. Lever. Specific Embodiment

[0014] In order to deepen the understanding of the present utility model, the following will further elaborate on the present utility model in combination with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0015] According to Figure 1 、 Figure 2 and Figure 3As shown, this embodiment provides an anti-unhooking device for a crane hook, including a hook body 1, a connecting mechanism, a side plate 2, a rotating shaft 3, an anti-unhooking mechanism and a locking mechanism. A connecting mechanism is arranged above the hook body 1, and the side plates 2 are symmetrically fixed and welded above the opening side of the hook body 1. A rotating shaft 3 is provided between the side plates 2. The anti-unhooking mechanism includes a rotating sleeve 4, an anti-tripping buckle 5, an adaptive arc edge 6, a connecting rod 7 and a counterweight rod 8. A rotating sleeve 4 is sleeved on the rotating shaft 3, an anti-tripping buckle 5 is fixedly welded on the side of the rotating sleeve 4, and an adaptive arc edge 6 is provided at one end of the anti-tripping buckle 5. A connecting rod 7 is fixedly welded on the anti-tripping buckle 5 near the rotating sleeve 4, and a counterweight rod 8 is welded between the connecting rods 7. A locking mechanism is provided on the hook body 1 above the counterweight rod 8.

[0016] The adapting arc edge 6 corresponds to the hook mouth of the hook body 1 to increase the fitting range. The connecting rod 7 is arranged perpendicular to the plane of the anti-trip buckle 5, realizing the lever principle to press the anti-trip buckle against the inner side of the hook mouth of the hook body.

[0017] The connecting mechanism includes a rotation limit ring 9, a connecting seat 10, an adapter slot 11 and a steel cable connecting shaft 12. A rotation limit ring 9 is fixedly welded above the hook body 1, and an adapter slot 11 is provided on the lower side of the connecting seat 10. The rotation limit ring 9 is rotatably adapted to the adapter slot 11, and a steel cable connecting shaft 12 is fixedly provided above the connecting seat 10.

[0018] The locking mechanism includes an inclined fixed seat 13, a telescopic slot 14, a telescopic card 15 and an adsorption magnet 16. The inclined fixed seat 13 is fixedly welded to the side surface of the opening of the hook body 1. The inclined fixed seat 13 is provided with a telescopic slot 14. The telescopic card 15 is movably provided in the telescopic slot 14. The adsorption magnet 16 is embedded in the tail end of the telescopic slot 14.

[0019] A through slot 17 is provided on the tilt fixing seat 13, and a lever 18 is fixedly welded to the through slot 17 extending above the tail end of the telescopic card 15. The telescopic card is retracted by tossing the lever and fixed by the adsorption magnet, so that the anti-slip mechanism can be activated. When the anti-slip lock is used, the telescopic card is separated from the adsorption magnet by the lever. Due to the action of gravity, the telescopic card slides down and locks the counterweight rod in the upward position, which can avoid the anti-slip vibration.

[0020] When the anti-unhooking device for a crane hook is used, the hook body is first connected to the steel cable through a connecting mechanism, and then the object to be hoisted is hung on the hook body. At this time, the anti-unhooking buckle rotates around the rotating shaft under the gravity of the counterweight rod at the other end, and the adapting arc edge of the anti-unhooking buckle is tightly fitted with the inner side of the hook mouth of the hook body to prevent unhooking. Finally, the telescopic card is separated from the adsorption magnet by the lever. Due to the action of gravity, the telescopic card slides down to lock the counterweight rod in the upward position, thereby preventing the anti-unhooking buckle from vibrating and detaching.

[0021] When unloading, the telescopic card is retracted by toggling the lever and fixed by the adsorption magnet, which can realize the unlocking of the anti-slip mechanism and facilitate the removal of the lifted material from the hook body.

[0022] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An anti-disengagement device for a crane hook, characterized in that: It includes a hook body (1), a connecting mechanism, side plates (2), a rotating shaft (3), an anti - decoupling mechanism, and a locking mechanism. A connecting mechanism is provided above the hook body (1). Symmetric side plates (2) are provided above the opening side of the hook body (1). A rotating shaft (3) is provided between the side plates (2). The anti - decoupling mechanism includes a rotating sleeve (4), an anti - decoupling buckle (5), an adapted arc edge (6), a connecting rod (7), and a counterweight rod (8). The rotating sleeve (4) is provided on the rotating shaft (3). The anti - decoupling buckle (5) is provided on the side of the rotating sleeve (4). One end of the anti - decoupling buckle (5) is provided with an adapted arc edge (6). A connecting rod (7) is provided on the anti - decoupling buckle (5) close to the rotating sleeve (4). A counterweight rod (8) is provided between the connecting rods (7). A locking mechanism is provided on the hook body (1) above the counterweight rod (8).

2. The anti-disengagement device for a traveling hook according to claim 1, characterized in that: The adapted arc edge (6) is correspondingly adapted to the opening hook mouth of the hook body (1), and the connecting rod (7) is arranged perpendicular to the plane of the anti - decoupling buckle (5).

3. The anti - unhooking device for a crane hook according to claim 1, characterized in that: The connecting mechanism includes a rotating limit ring (9), a connecting seat (10), an adapted card slot (11), and a steel cable connecting shaft (12). The rotating limit ring (9) is provided above the hook body (1). The adapted card slot (11) is provided on the lower side of the connecting seat (10). The rotating limit ring (9) is rotationally adapted to the adapted card slot (11). The steel cable connecting shaft (12) is provided above the connecting seat (10).

4. A lifting hook anti-disengagement device according to claim 1, characterized in that: The locking mechanism includes an inclined fixing seat (13), a telescopic slot (14), a telescopic clamping plate (15), and an adsorption magnet (16). The inclined fixing seat (13) is provided on the opposite side of the opening of the hook body (1). A telescopic slot (14) is provided in the inclined fixing seat (13). A telescopic clamping plate (15) is provided in the telescopic slot (14). The adsorption magnet (16) is embedded at the end of the telescopic slot (14).

5. The anti-disengagement device for a traveling crane hook according to claim 4, characterized in that: A through - slot (17) is provided on the inclined fixing seat (13). A lever (18) is provided above the end of the telescopic clamping plate (15) protruding out of the through - slot (17).

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