Automatic unhooking device

Abstract

The utility model discloses an automatic unhooking device which comprises a fixing frame, a clamping assembly is assembled in the fixing frame, the clamping assembly comprises an electric push rod, the electric push rod is fixedly assembled in the fixing frame, push rod shafts which are symmetrically distributed front and back are fixedly assembled at the output end of the electric push rod, and a first lifting hook and a second lifting hook are assembled in the fixing frame. The push rod shaft is hinged to one ends of a first connecting arm and a second connecting arm, and the other ends of the first connecting arm and the second connecting arm are hinged to the connecting shaft. The electric push rod is matched with the actions of the first connecting arm and the second connecting arm, so that the opening and closing of the first lifting hook and the second lifting hook can be adjusted, and the first lifting hook and the second lifting hook can be strongly locked after the first connecting arm and the second connecting arm are horizontally arranged; therefore, the stability of connection between the lifting hooks and the lifting belt in the lifting process is enhanced, and the potential safety hazard that the lifting belt is unhooked due to unstable position connection between the first lifting hook and the second lifting hook in the lifting process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to an automatic unhooking device. Background Technology

[0002] A lifting hook is a connecting accessory used in conjunction with lifting equipment for high-altitude transport of goods, primarily serving to connect the lifting equipment and the goods. Most existing lifting hooks employ pneumatic control, utilizing high-pressure gas from a cylinder to open the hook at a designated lifting position, automatically disengaging the hook from the sling. However, this method is not only structurally complex and requires frequent cylinder replacements, but also suffers from low reliability; unstable gas pressure can easily lead to disengagement and safety hazards. Therefore, we propose an automatic disengagement device. Utility Model Content

[0003] The purpose of this invention is to provide an automatic unhooking device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic unhooking device, comprising a fixed frame, a clamping assembly assembled within the fixed frame, the clamping assembly including an electric push rod, the electric push rod being fixedly assembled within the fixed frame, the output end of the electric push rod being fixedly assembled with push rod shafts symmetrically distributed front and rear, a first hook and a second hook being assembled within the fixed frame, the side walls of the first hook and the second hook being respectively fixedly assembled with rotating shafts, the rotating shafts being rotatably connected within the fixed frame, the tops of the first hook and the second hook being respectively fixedly assembled with connecting shafts, the push rod shafts being hinged to one end of the first connecting arm and the second connecting arm, and the other ends of the first connecting arm and the second connecting arm being hinged to the connecting shafts.

[0005] Preferably, the fixing frame includes two fixing plates, a fixing shaft is fixedly assembled between the two fixing plates, a lifting shaft is fixedly assembled between the two fixing plates, and a lifting groove is provided at the bottom of each of the two fixing plates.

[0006] Preferably, the side walls of the two fixed plates are respectively fixedly equipped with sling limiting components arranged opposite to each other. The sling limiting components include fixed seats, which are fixedly assembled on the side walls of the fixed plates. A cylindrical stop pin is installed inside the fixed seat, and a tension spring is installed between the cylindrical stop pin and the fixed seat.

[0007] Preferably, the side wall of the first hook is provided with a clamping groove, and the side wall of the second hook is integrally formed with a clamping block.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: An automatic unhooking device assembles the clamping components into a fixed frame to form a complete lifting hook for hoisting. The opening and closing of the first and second hooks can be adjusted by using an electric push rod in conjunction with the movement of the first and second connecting arms. When the first and second connecting arms are horizontally set, they can provide a strong locking ability for the first and second hooks, thereby enhancing the stability of the connection between the hook and the sling during hoisting and avoiding the safety hazard of the sling unhooking caused by unstable positional connection between the first and second hooks during hoisting. At the same time, a sling limiting component is also set on the side wall of the fixed frame. The sling limiting component can further limit the sling during hoisting and enhance the stability of the connection and fixation between the sling and the hook. Attached Figure Description

[0009] Figure 1 This is a perspective view of the present invention.

[0010] Figure 2 This is the front view of the present invention.

[0011] Figure 3 This is a schematic diagram of the clamping assembly of this utility model.

[0012] Figure 4 This is a front view of the clamping assembly of this utility model.

[0013] Figure 5 This is the front view of the fixing plate of this utility model.

[0014] In the diagram: 1. Fixing frame; 11. Fixing plate; 12. Fixing shaft; 13. Lifting shaft; 14. Lifting groove; 2. Clamping assembly; 21. Electric push rod; 22. Push rod shaft; 23. First connecting arm; 24. Second connecting arm; 25. First hook; 251. Clamping groove; 26. Second hook; 261. Clamping block; 27. Rotating shaft; 28. Connecting shaft; 29. ​​Limiting slide groove; 3. Sling limiting assembly; 31. Fixing seat; 32. Cylindrical stop pin; 33. Tension spring. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: an automatic unhooking device, including a fixed frame 1, and a clamping component 2 is installed inside the fixed frame 1. Through the cooperation of the fixed frame 1 and the clamping component 2, the steel wire rope or sling to be hoisted can be hoisted.

[0017] like Figure 1 and Figure 3 As shown, the fixing frame 1 includes two fixing plates 11. A fixing shaft 12 is welded and fixed between the two fixing plates 11. The fixing shafts 12 are evenly distributed from top to bottom. The evenly distributed fixing shafts 12 can enhance the stability of the connection and fixation between the two fixing plates 11. A lifting shaft 13 is welded and fixed between the two fixing plates 11 at the top position of the fixing plates 11. The lifting shaft 13 is used to connect and fix with external lifting equipment and is used in conjunction with the lifting equipment.

[0018] The bottom of each of the two fixed plates 11 is provided with a lifting groove 14. The lifting groove 14 is used for the passage of the lifting wire rope or lifting belt, so that the clamping assembly 2 assembled on the two fixed plates 11 can clamp the wire rope or lifting belt.

[0019] like Figure 3 and Figure 4 As shown, the clamping assembly 2 includes an electric push rod 21, which is fixedly mounted between two fixed plates 11 via an assembly shaft. The electric push rod 21 is electrically connected to an external power supply and an external controller. The external controller can control the output end of the electric push rod 21 to move. The output end of the electric push rod 21 is fixedly connected to push rod shafts 22 that are symmetrically distributed front and rear. The side wall of the fixed plate 11 is provided with a push rod shaft limiting groove. After the fixed plate 11 is assembled and fixed, the push rod shaft 22 is slidably connected in the push rod shaft limiting groove. The end of the push rod shaft 22 is hinged to one end of the first connecting arm 23 and the second connecting arm 24. The two fixed plates 11 are assembled together. There are first hooks 25 and second hooks 26 symmetrically distributed on the left and right. The middle parts of the first hooks 25 and second hooks 26 are respectively fixedly connected to rotating shafts 27, which are rotatably connected to fixed plates 11. The tops of the first hooks 25 and second hooks 26 are respectively fixedly connected to connecting shafts 28. The tops of the first hooks 25 and second hooks 26 are respectively hinged to the other ends of the first connecting arms 23 and second connecting arms 24 through connecting shafts 28. The output end of the electric push rod 21 drives the push rod shaft 22 and the first connecting arms 23 and second connecting arms 24 to realize the closing and opening actions of the first hooks 25 and second hooks 26.

[0020] like Figure 3 and Figure 5As shown, a limiting groove 29 is provided in the side wall of the fixed plate 11. The end of the connecting shaft 28 is slidably connected in the limiting groove 29. By setting the limiting groove 29, the travel of the connecting shaft 28 during the operation of the first hook 25 and the second hook 26 is limited, thereby improving the stability of the operation of the first connecting arm 23 and the second connecting arm 24 driving the first hook 25 and the second hook 26.

[0021] like Figure 3 As shown, the bottom of the first hook 25 is provided with a clamping groove 251, and the bottom of the second hook 26 is integrally formed with a clamping block 261. When the first hook 25 and the second hook 26 are closed, the clamping block 261 is inserted into the clamping groove 251 to enhance the locking effect between the first hook 25 and the second hook 26, thereby enhancing the stability of the first hook 25 and the second hook 26 for the hoisting of wire ropes and slings.

[0022] like Figure 1 and Figure 2 As shown, the side walls of the two fixed plates 11 are respectively fixedly equipped with sling limiting components 3. The sling limiting components 3 are used to limit the steel wire rope or sling connected to the first hook 25 and the second hook 26 during the hoisting process, thereby improving the stability of the connection between the steel wire rope or sling and the first hook 25 and the second hook 26 during the hoisting process.

[0023] The sling limiting assembly 3 includes a fixed seat 31, which is welded and fixed to the side wall of the fixed plate 11. A cylindrical stop pin 32 is engaged inside the fixed seat 31, and a tension spring 33 is assembled between the cylindrical stop pin 32 and the fixed seat 31. When using this utility model to lift wire ropes or slings, after controlling the first hook 25 and the second hook 26 to open, the sling is suspended in the sling limiting assembly 3 on both sides. After the electric push rod 21 is activated, it drives the first hook 25 and the second hook 26 to close, thereby clamping the sling. The crane can then control this lifting device to lift the sling. After the lifting is completed, the output end of the electric push rod 21 moves upward, controlling the first hook 25 and the second hook 26 to open. The crane drives the lifting device to lift the whole thing, and the sling can be disengaged from between the cylindrical stop pins 32, completing the unhooking operation with the hooks and realizing automatic unhooking during the lifting process.

Claims

1. An automatic unhooking device, comprising a fixing frame (1), characterized in that: The fixed frame (1) is equipped with a clamping assembly (2), which includes an electric push rod (21). The electric push rod (21) is fixedly assembled in the fixed frame (1). The output end of the electric push rod (21) is fixedly equipped with push rod shafts (22) that are symmetrically distributed in front and back. The fixed frame (1) is equipped with a first hook (25) and a second hook (26). The side walls of the first hook (25) and the second hook (26) are respectively fixedly equipped with rotating shafts (27). The rotating shafts (27) are rotatably connected in the fixed frame (1). The tops of the first hook (25) and the second hook (26) are respectively fixedly equipped with connecting shafts (28). The push rod shaft (22) is hinged to one end of the first connecting arm (23) and the second connecting arm (24). The other end of the first connecting arm (23) and the second connecting arm (24) is hinged to the connecting shaft (28).

2. The automatic unhooking device according to claim 1, characterized in that: The fixing frame (1) includes a fixing plate (11), and there are two fixing plates (11). A fixing shaft (12) is fixedly assembled between the two fixing plates (11), and a lifting shaft (13) is fixedly assembled between the two fixing plates (11). A lifting groove (14) is opened at the bottom of each of the two fixing plates (11).

3. The automatic unhooking device according to claim 2, characterized in that: The side wall of the fixing plate (11) is provided with a limiting groove (29), and the connecting shaft (28) is slidably connected in the limiting groove (29).

4. The automatic unhooking device according to claim 2, characterized in that: The two fixed plates (11) are respectively fixedly fitted with sling limiting components (3) arranged opposite to each other. The sling limiting components (3) include a fixed seat (31), which is fixedly fitted to the side wall of the fixed plate (11). A cylindrical stop pin (32) is fitted inside the fixed seat (31), and a tension spring (33) is fitted between the cylindrical stop pin (32) and the fixed seat (31).

5. An automatic unhooking device according to claim 1, characterized in that: The first hook (25) has a clamping groove (251) on its side wall, and the second hook (26) has a clamping block (261) integrally formed on its side wall.

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