Crane sling with automatic unhooking function

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to a crane sling with an automatic unhooking device, which comprises the automatic unhooking device, the automatic unhooking device comprises a connecting hanging plate, a hanging bracket and a lifting hook, the connecting hanging plate is arranged on the hanging bracket, the lifting hook is hinged on the hanging bracket, a hook groove of the lifting hook is deviated to one side of the hanging bracket, and a gravity block is arranged at the upper end of the lifting hook. The gravity block inclines towards one side of the hook groove of the lifting hook, a magnet block is arranged on the gravity block, a magnet column is arranged on the lifting frame, the magnet block corresponds to the magnet column in position, and the weight of the gravity block is larger than that of the lifting hook. According to the automatic unhooking device, the purpose of automatically unhooking the lifting rope after the lifting operation is completed is achieved, the safety of lifting operators is protected, and the lifting efficiency of the crane is improved.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a crane lifting device equipped with an automatic unhooking mechanism. Background Technology

[0002] In existing crane loading and unloading operations, when lifting heavy objects, multiple hooks under the boom are usually used simultaneously for lifting heavy objects. The slings for the heavy objects need to be placed on the hooks, and when the objects are lifted to the target location, the slings need to be removed from the hooks. In the existing technology, the slings are manually attached and removed, which poses safety risks when lifting heavy objects. In order to reduce the manual installation and removal of slings, an improvement is proposed to overcome the defects of the existing technology. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems in the prior art by providing a crane lifting device equipped with an automatic unhooking mechanism, thereby solving the personnel safety problem in existing lifting operations and improving work efficiency.

[0004] The technical solution of this utility model is:

[0005] A crane lifting device equipped with an automatic unhooking mechanism includes an automatic unhooking mechanism comprising a connecting plate, a lifting frame, and a hook. The connecting plate is mounted on the lifting frame, and the hook is hinged to the lifting frame. The hook groove of the hook is biased towards one side of the lifting frame. A gravity block is provided at the upper end of the hook, and the gravity block is inclined towards one side of the hook groove. A magnet is provided on the gravity block, and a magnet post is provided on the lifting frame. The positions of the magnet block and the magnet post correspond, and the weight of the gravity block is greater than the weight of the hook.

[0006] The process involves rotating the hook along the hinge point between the hook and the gantry. When the hook is used to lift a load, it rotates, causing the magnetic block and magnetic column to attract each other, thus achieving the pre-positioning of the hook. This prevents the hook from flipping due to the rotation of the gravity block and prevents the lifting rope from slipping out of the hook. Before the lifting rope is taut, the hook is not under any force. After the lifting rope is taut, the hook rotates downwards under the weight of the cargo bag until the center of gravity of the hook reaches its lowest point. At this point, the magnetic block and magnetic column separate. After the cargo bag is transported to the designated location by the crane, the hook is no longer pulled by the weight of the cargo bag. The gravity block on the hook rotates downwards along the hinge point between the hook and the gantry, causing the hook to rotate upwards, achieving automatic flipping of the hook. The lifting rope slides out of the hook groove, reducing the need for manual removal of the lifting rope, ensuring personnel safety during lifting operations, and improving work efficiency.

[0007] As a preferred technical solution, the connecting plate is designed in an "L" shape and is fixed to the hanger.

[0008] The two side panels of the connecting plate are perpendicular to each other, with one side panel being vertical and the other side panel being horizontal, and are fixed to the hanger.

[0009] As a preferred technical solution, the connecting plate is hinged with a first hook and a second hook, which are respectively located on the two side plates of the "L" shape of the connecting plate.

[0010] The first hook is used to connect to the crane, and the second hook is used to attach cargo bags.

[0011] As a preferred technical solution, a first lifting rope is connected to the first hook, and the first lifting rope is fixedly connected to the crane.

[0012] As a preferred technical solution, a second hanging rope is connected to the second hook, and the second hanging rope is used to hang the cargo bag.

[0013] As a preferred technical solution, the magnet post has external threads at both ends, and fixing nuts at both ends. The fixing nuts are threaded onto the magnet post to fix it in place.

[0014] As a preferred technical solution, the system also includes a main beam, on which multiple lifting beams are spaced apart, and lifting holes are provided on the lifting beams. The main beam is connected to the boom of the crane.

[0015] As a preferred technical solution, the automatic unhooking is hoisted onto the lifting beam.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model relates to a crane lifting device equipped with an automatic unhooking mechanism. By setting up an automatic unhooking mechanism, the device includes a connecting plate, a lifting frame, and a hook. A magnetic block is installed on the hook, a magnetic column is installed on the lifting frame, and a gravity block with a weight greater than the hook itself is installed on the hook. This achieves the purpose of automatically unhooking the lifting rope after the lifting operation is completed, protecting the safety of the lifting personnel and improving the lifting efficiency of the crane. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic unhooking mechanism of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the hook of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the connecting plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the hanger of this utility model;

[0022] Figure 5 This is a side view of the hanger of this utility model;

[0023] Figure 6 This is a schematic diagram of the crane before hoisting according to this utility model;

[0024] Figure 7 This is a schematic diagram of the crane hoisting process according to this utility model;

[0025] Figure 8 This is a schematic diagram of the crane detaching after hoisting according to this utility model;

[0026] Figure 9 This is a schematic diagram of the main beam of this utility model;

[0027] Figure 10 This is a side view of the main beam of this utility model;

[0028] Figure 11 This is a schematic diagram of the automatic unhooking and hoisting of the present invention onto the main beam.

[0029] In the diagram: 1. First hook; 2. Hanger; 3. Hook; 4. Connecting plate; 5. Second hook; 6. Magnetic column; 7. Gravity block; 8. Magnetic block; 9. First hinge hole; 10. First fixing hole; 11. Second fixing hole; 12. Second hinge hole; 13. Fixing nut; 14. First lifting rope; 15. Second lifting rope; 16. Cargo bag; 17. Main beam; 18. Lifting beam; 19. Lifting hole. Detailed Implementation

[0030] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0031] like Figure 1-5 The diagram shown is a schematic representation of the overall structure of the crane lifting device equipped with an automatic unhooking mechanism of this utility model.

[0032] The crane lifting device equipped with automatic unhooking in this embodiment includes a connecting plate 4, a lifting frame 2, and a hook 3. The lower end of the lifting frame 2 is provided with a second hinge hole 12, and the hook 3 is provided with a first hinge hole 9. The first hinge hole 9 and the second hinge hole 12 are positioned correspondingly. The hook 3 is hinged to the lifting frame 2. The hook groove of the hook 3 is biased towards one side of the lifting frame 2. The upper end of the hook 3 is provided with a gravity block 7. The weight of the gravity block 7 is greater than the weight of the hook 3. The gravity block 7 is tilted towards one side of the hook groove of the hook 3. A magnet block 8 is fixed to the side of the gravity block 7. A magnet column 6 is fixed to the lifting frame 2. The two ends of the magnet column 6 are fixed to the lifting frame 2 by fixing nuts 13. The positions of the magnet block 8 and the magnet column 6 are correspondingly aligned. When the magnet block 8 and the magnet column 6 attract each other, the hook 3 is pre-fixed.

[0033] The connecting plate 4 has a first fixing hole 10 and the upper end of the hanger 2 has a second fixing hole 11. The first fixing hole 10 and the second fixing block 11 are positioned correspondingly. The connecting plate 4 is fixed to the hanger 2. The connecting plate 4 is L-shaped and has two side plates. The two side plates are perpendicular to each other. One side plate is vertical and the other side plate is horizontal. It is fixed to the hanger 2. The two side plates of the connecting plate 4 are respectively hinged with a first hook 1 and a second hook 5. The first hook 1 is used to connect the crane boom and the second hook 5 is used to connect the cargo bag 16.

[0034] like Figure 6 The diagram shown is a schematic diagram of the crane before hoisting according to this utility model.

[0035] The first hook 1 is connected to the first lifting rope 14, which is connected to the boom of the crane. The second hook 5 is connected to the second lifting rope 15, which is used to hang the cargo bag 16. The magnet block 8 attracts the magnet post 6, which achieves the pre-fixation of the hook 3. Both the hook 3 and the gravity block 7 are tilted to one side of the hanger 2.

[0036] like Figure 7 The diagram shown is a schematic representation of the crane hoisting process of this utility model.

[0037] After the second lifting rope 15 passes through the lifting ring on the cargo bag 16, it is suspended on the hook 3. The second lifting rope 15 is pulled downward by the cargo bag 16 and straightens. The hook 3 rotates downward by the tension of the lifting rope 15. The gravity block 7 rotates downward with the hook 3 until the center of gravity of the cargo bag 16 moves to the lowest point. The hook 3 stops rotating and the magnet block 8 separates from the magnet column 6.

[0038] like Figure 8 The diagram shown is a schematic of the crane detaching after hoisting according to this utility model.

[0039] After the cargo bag 16 is hoisted to the designated position, it is placed on the ground. The second hoisting rope 15 is no longer under tension, and the hook 3 is no longer under the tension of the second hoisting rope 15. The gravity block 7 and the hook 3 rotate along the hinge point between the hook 3 and the frame 2. The gravity block 7 rotates downward and the hook 3 rotates upward. The hook groove of the hook 3 flips downward, and the second hoisting rope 15 slides down on the hook 3, realizing the automatic unhooking of the second hoisting rope 15 and improving the hoisting efficiency of the crane.

[0040] like Figure 9 and Figure 10 The diagram shown is a structural schematic of the main beam of this utility model.

[0041] Multiple lifting beams 18 are fixed on the main beam 17 shown. The distance between adjacent lifting beams 18 is set to facilitate the lifting and transportation of the cargo bag 16. Lifting holes 19 are opened on the lifting beams 18, and lifting rings are usually installed in the lifting holes 19.

[0042] like Figure 11 The diagram shown is a schematic of the automatic unhooking and hoisting of the present invention onto the main beam.

[0043] The first lifting rope 14 shown is connected to the lifting ring, and automatically unhooks and is connected to the main beam 17 via the first lifting rope 14. The main beam 17 is connected to the crane boom via a chain for lifting and transporting the cargo bag 16.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A crane lifting device equipped with an automatic unhooking mechanism, characterized in that, The automatic unhooking includes a connecting plate (4), a hanger (2) and a hook (3). The connecting plate (4) is set on the hanger (2), and the hook (3) is hinged on the hanger (2). The hook groove of the hook (3) is biased towards one side of the hanger (2). The upper end of the hook (3) is provided with a gravity block (7). The gravity block (7) is tilted towards one side of the hook groove of the hook (3). A magnet block (8) is provided on the gravity block (7), and a magnet column (6) is provided on the hanger (2). The positions of the magnet block (8) and the magnet column (6) are corresponding. The weight of the gravity block (7) is greater than the weight of the hook (3).

2. The crane lifting device equipped with an automatic unhooking mechanism according to claim 1, characterized in that, The connecting plate (4) is L-shaped and is fixed to the hanger (2).

3. The crane lifting device equipped with an automatic unhooking mechanism according to claim 2, characterized in that, The connecting plate (4) is hinged with a first hook (1) and a second hook (5), which are respectively located on the two "L"-shaped side plates of the connecting plate (4).

4. The crane lifting device equipped with an automatic unhooking mechanism according to claim 3, characterized in that, The first hook (1) is connected to the first lifting rope (14).

5. The crane lifting device equipped with an automatic unhooking mechanism according to claim 3, characterized in that, The second hook (5) is connected to the second lifting rope (15).

6. The crane lifting device equipped with an automatic unhooking mechanism according to claim 1, characterized in that, The magnet post (6) has external threads at both ends and fixing nuts (13) at both ends.

7. The crane lifting device equipped with an automatic unhooking mechanism according to any one of claims 1-6, characterized in that, It also includes a main beam (17), on which multiple hanging beams (18) are spaced apart, and hanging holes (19) are opened on the hanging beams (18).

8. The crane lifting device equipped with an automatic unhooking mechanism according to claim 7, characterized in that, The automatic unhooking device is hoisted onto the lifting beam (18).

Images