Double self-locking rotary double hook
By designing a double self-locking rotating double hook, the problems of inconvenient connection and easy damage of oil rotating hooks are solved, achieving stable connection and flexible rotation, reducing the risk of the hoisted object falling off the hook, and improving the safety of hoisting.
Patent Information
- Application Number
- CN202422957605.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing oilfield rotary hooks have problems such as small connection space, easy damage to self-locking hooks, and easy damage to bearings that cannot be replaced, which can cause the load to slip out or fail to rotate during hoisting.
Design a double self-locking rotating double hook, the lifting shaft can be directly connected to the crane hook, the hook is automatically locked by its own weight and spring pressure, the bearing can rotate 360° and is detachable, and the hook body is equipped with protrusions and handles for easy opening and locking.
It achieves a stable connection between the lifting shaft and the crane hook, allowing for flexible rotation during lifting, reducing the risk of the load swaying and disengaging, and improving the safety and reliability of lifting operations.
Smart Images
Figure CN223509506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting and hoisting technology, and in particular to a double self-locking rotating double hook. Background Technology
[0002] In the field of lifting and hoisting, the oil rotary hook is a commonly used lifting tool, particularly suitable for lifting drill pipes, hoisting short couplings, and other drilling tools, as well as for moving tubing up and down the drilling platform. Due to the complex on-site environment and unpredictable external forces, conventional oil rotary hooks mainly consist of a shackle, upper lifting lug, intermediate body, bearing, lower lifting lug, and self-locking hook. This type of oil rotary hook has the following drawbacks: 1. The space at the connection point with the overhead crane is small, making installation difficult; 2. The self-locking hook safety catch is easily damaged during use, and the lifted object can easily slip out of the hook; 3. The bearing is inside the intermediate body, which is easily damaged and cannot rotate under external impact, and cannot be replaced. Therefore, this utility model proposes a double self-locking rotary double hook to overcome the shortcomings of the existing technology. Utility Model Content
[0003] To address the aforementioned problems, the purpose of this utility model is to provide a double self-locking rotating double hook, in which the lifting shaft can be directly connected to the overhead crane hook, offering the advantage of a large connection space. The hook body automatically locks itself using its own weight and spring pressure. This double self-locking device greatly reduces the risk of the suspended object becoming dislodged due to external forces during the lifting process.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A double self-locking rotating double hook includes a lifting shaft, lifting plates, a base, a main shaft, an intermediate body, and hook bodies. The lifting shaft has detachable lifting plates at both ends. The base has mounting shafts on both sides. Each of the two lifting plates has a shaft hole at its lower end, and the two mounting shafts are respectively installed in the shaft holes. A bearing is detachably installed on the top of the base. A main shaft is located inside the bearing, with its lower end extending out of the bottom of the base. An intermediate body is located on the outer side of the lower end of the main shaft. An installation cavity is formed between the inner wall of the intermediate body and the outer wall of the main shaft. A spring is located within the installation cavity. A movable body is located below the interior of the installation cavity, with its upper end connected to the bottom of the spring. An external threaded sleeve is detachably connected to the lower interior of the intermediate body, with its upper end abutting against the outer wall of the movable body. A connecting shaft is located at the lower end of the main shaft, and hook bodies are symmetrically and rotatably mounted on the connecting shaft.
[0006] A further improvement is that: after the mounting shaft is installed inside the shaft hole, one end extends out of the shaft hole and is provided with a semi-circular clip, which is installed to the hanging plate by connecting bolts.
[0007] A further improvement is that a locking nut is provided above the bearing, which allows the bearing to be detachably mounted on the top of the base.
[0008] A further improvement is that: each of the two hook bodies is provided with a handle on its outer wall, the two handles are symmetrically arranged, and the two handles are integrally formed with the two hook bodies.
[0009] A further improvement is that: a protrusion is provided on the outer side of the upper end of the hook body, the protrusion is integrally formed with the hook body, and the lower end of the movable body abuts against the two protrusions.
[0010] A further improvement is that the middle section of the hanging shaft has a concave structure, and the concave structure of the hanging shaft is provided with anti-slip texture.
[0011] The beneficial effects of this utility model are as follows: The double self-locking rotating double hook of this utility model connects the lifting shaft and the lifting plate. The lifting shaft can be directly connected to the crane hook, which has the advantage of a large connection space. The bearing setting allows the entire device to rotate 360° flexibly during the hoisting process. The two handles on the hook body open the double hooks. The protrusion on the hook body can lift the movable body, causing the movable body to drive the spring to compress upward, so that the two hooks are in an open state. After the object to be hoisted is connected, the worker can remove his hands from the hook body. The hook body automatically locks the hook by its own weight and spring pressure. This double self-locking device greatly reduces the risk of the object being hoisted falling off the hook due to shaking caused by external forces during the hoisting process. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0013] Figure 2 This is a side view of the structure of this utility model;
[0014] Figure 3 This is a partially enlarged schematic diagram of the external threaded sleeve mounting structure of this utility model.
[0015] The components are: 1. Hanging shaft; 2. Hanging plate; 3. Base; 4. Main shaft; 5. Intermediate body; 6. Hook body; 7. ; 8. Bearing; 9. Spring; 10. Moving body; 11. External threaded sleeve; 12. Connecting shaft; 13. Locking nut; 14. Handle; 15. Protrusion; 16. Semicircular clip; 17. Connecting bolt. Detailed Implementation
[0016] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.
[0017] according to Figure 1-3As shown, this embodiment proposes a double self-locking rotating double hook, including a lifting shaft 1, a lifting plate 2, a base 3, a main shaft 4, an intermediate body 5, and a hook body 6. The lifting shaft 1 is detachably equipped with lifting plates 2 at both ends. The base 3 is equipped with mounting shafts 7 on both sides. The lower ends of the two lifting plates 2 are provided with shaft holes, and the two mounting shafts 7 are respectively installed in the shaft holes. The top of the base 3 is detachably equipped with a bearing 8. The bearing 8 is equipped with a main shaft 4. The lower end of the main shaft 4 extends out of the bottom of the base 3. The lower outer side of the main shaft 4 is provided with an intermediate body 5. The inner side wall of the intermediate body 5 and the outer side wall of the main shaft 4 form a mounting cavity. The mounting cavity is equipped with a spring 9. The lower part of the mounting cavity is equipped with a movable body 10. The upper end of the movable body 10 is connected to the bottom of the spring 9. The lower part of the intermediate body 5 is detachably connected with an external threaded sleeve 11. The upper end of the external threaded sleeve 11 abuts against the outer wall of the movable body 10. The lower end of the main shaft 4 is equipped with a connecting shaft 12. The hook body 6 is symmetrically and rotatably mounted on the connecting shaft 12.
[0018] When using this utility model of double self-locking rotating double hooks, the crane hook is directly connected to the lifting shaft 1. The space of the lifting shaft 1 is larger than that of the traditional shackle, which greatly reduces the cumbersome connecting parts in the middle. The bearing 8 allows the main shaft 4 to rotate 360°, and the detachable bearing 8 is easy to disassemble and replace. When the two hook bodies 6 are opened, rotating the hook body 6 causes the protrusion 15 on the hook body 6 to squeeze the movable body 1, causing the movable body 1 to move upward and thus driving the spring 9 to be compressed. After the hoisting is completed, the hook body 6 automatically locks the hook by its own weight and the pressure of the spring 9.
[0019] The mounting shaft 7 is installed inside the shaft hole, with one end extending out of the shaft hole and equipped with a semi-circular clip 16. The semi-circular clip 16 is installed to the hanging plate 2 by connecting bolts 17. The above configuration makes the base 3 structure easy to disassemble and install.
[0020] A locking nut 13 is provided above the bearing 8, which allows the bearing 8 to be detachably mounted on the top of the base 3. The locking nut 13 enables quick installation and removal of the bearing 8.
[0021] Each of the two hook bodies 6 has a handle 14 on its outer wall. The two handles 14 are symmetrically arranged and are integrally formed with the two hook bodies 6. The handles 14 facilitate the separation and opening of the two hook bodies 6.
[0022] The upper outer side of the hook body 6 is provided with a protrusion 15, the protrusion 15 and the hook body 6 are integrally formed, and the lower end of the movable body 10 abuts against the two protrusions 15.
[0023] The middle section of the lifting shaft 1 has a concave structure, and the concave structure of the lifting shaft 1 is provided with anti-slip texture. The anti-slip texture ensures high stability when the lifting shaft 1 is connected to the crane hook.
[0024] The double self-locking rotating double hook of this utility model connects the lifting shaft 1 and the lifting plate. The lifting shaft 1 can be directly connected to the crane hook, which has the advantage of large connection space. The bearing 8 allows the entire device to rotate 360° flexibly during the hoisting process. The two handles 14 on the hook body 6 open the double hooks. The protrusion 15 on the hook body 6 can lift the movable body 10, causing the movable body 11 to drive the spring 9 to compress upward, so that the two hook bodies 6 are in the open state. After the object to be hoisted is connected, the worker can remove his hands from the hook body. The hook body 6 automatically locks the hook by its own weight and the pressure of the spring 9. This double self-locking device greatly reduces the risk of the object being hoisted being shaken and disengaged by external forces during the hoisting process.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A double self-locking rotating double hook, characterized in that: The system includes a lifting shaft (1), a lifting plate (2), a base (3), a main shaft (4), an intermediate body (5), and a hook body (6). The lifting shaft (1) is detachably equipped with lifting plates (2) at both ends. The base (3) is equipped with mounting shafts (7) on both sides. The lower ends of the two lifting plates (2) are provided with shaft holes, and the two mounting shafts (7) are respectively installed in the shaft holes. The top of the base (3) is detachably equipped with a bearing (8). The bearing (8) is equipped with a main shaft (4) inside. The lower end of the main shaft (4) extends out of the bottom of the base (3). The lower outer side of the main shaft (4) is provided with... There is an intermediate body (5), and an installation cavity is formed between the inner wall of the intermediate body (5) and the outer wall of the main shaft (4). A spring (9) is provided in the installation cavity. A movable body (10) is provided at the bottom inside the installation cavity. The upper end of the movable body (10) is connected to the bottom of the spring (9). An external threaded sleeve (11) is detachably connected at the bottom inside the intermediate body (5). The upper end of the external threaded sleeve (11) abuts against the outer wall of the movable body (10). A connecting shaft (12) is provided at the lower end of the main shaft (4). Hooks (6) are symmetrically and rotatably provided on the connecting shaft (12).
2. The double self-locking rotating double hook according to claim 1, characterized in that: The mounting shaft (7) is installed inside the shaft hole, and one end extends out of the shaft hole and is provided with a semi-circular clip (16). The semi-circular clip (16) is installed with the hanging plate (2) by connecting bolts (17).
3. The double self-locking rotating double hook according to claim 1, characterized in that: A locking nut (13) is provided above the bearing (8), and the locking nut (13) detachably mounts the bearing (8) on the top of the base (3).
4. The double self-locking rotating double hook according to claim 1, characterized in that: Each of the two hooks (6) has a handle (14) on its outer wall. The two handles (14) are arranged symmetrically, and the two handles (14) are integrally formed with the two hooks (6).
5. A double self-locking rotating double hook according to claim 1, characterized in that: The upper outer side of the hook body (6) is provided with a protrusion (15), the protrusion (15) and the hook body (6) are integrally formed, and the lower end of the movable body (10) abuts against the two protrusions (15).
6. The double self-locking rotating double hook according to claim 1, characterized in that: The middle section of the hanging shaft (1) has a concave structure, and the concave structure of the hanging shaft (1) is provided with anti-slip texture.