Lifting hook capable of automatically completing unhooking
By adding counterweight rods and counterweight blocks to the hook and using torque to automatically remove the hook, the safety risks and high cost problems of auxiliary hook removal by scoopers in the existing technology are solved, and the operation efficiency is improved.
Patent Information
- Application Number
- CN202420557886.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In the prior art, the trolley needs to assist the lifting operation during lifting operations, which poses safety risks, high labor costs, and low operating efficiency.
A hook that can automatically remove the hook is designed. By adding counterweight rods and counterweight blocks to the hook, using the torque formed by counterweight rods and counterweight blocks with respect to the ring, the hook rotates counterclockwise when the hook head is not hung with heavy objects, and automatically completes the hook removal action.
The automatic hook removal of the hook is realized, which reduces the safety risks and costs of manual operation and improves the efficiency of lifting operations.
Smart Images
Figure CN222781262U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hook which can automatically complete the hook-off action and belongs to the technical field of lifting and slinging equipment. Background Art
[0002] When a crane is performing lifting operations, it often requires the cooperation of a crane operator and a rigger. After the crane operator moves the hook to a suitable position for hooking, the rigger assists in hooking the hook to the lifting hole of the cargo. After the hook is in place, the rigger assists in unhooking. Lifting operations are dangerous operations in themselves. The safety risk of riggers working near the hoisted objects is extremely high, and the labor cost is increased. Therefore, there is a need for a hook that can automatically unhook. After the rigger hooks, he can do other work without unhooking. This can reduce the safety risk of manual operations, reduce labor costs, and improve work efficiency. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a hook which can automatically complete unhooking. After the goods are hoisted into place, the overhead crane descends and the hook can be automatically unhooked, without the assistance of a rigger to perform the unhooking operation.
[0004] The technical solution to solve the above technical problems is:
[0005] The utility model discloses a hook which can automatically remove the hook, and comprises a hook main chain, a lifting ring, a hook body and a hook head. The lifting ring is connected to the hook main chain as a whole, and the lifting ring also comprises a counterweight rod and a counterweight block. The rod body of the counterweight rod is coplanar with the hook plane, the counterweight rod is located on the side of the hook body opposite to the opening of the hook head, the lower end of the counterweight rod is welded to the connection between the upper end of the hook body and the lifting ring, the length direction of the counterweight rod is parallel to the opening direction of the hook head, the upper end of the counterweight rod is connected to the counterweight block, and the torque formed by the counterweight rod and the counterweight block relative to the lifting ring is greater than the torque formed by the hook body and the hook head relative to the lifting ring.
[0006] The above-mentioned hook that can automatically complete hook removal has a thread on the upper end of the rod body of the counterweight rod, the counterweight block is a cylinder, and there is a screw hole on the central axis of the length direction of the cylinder of the counterweight block, the screw hole matches the thread on the upper end of the counterweight rod, the counterweight rod and the counterweight block are connected by threads, and a lifting ear is welded on the side wall of the cylinder of the counterweight block, and the lifting ear is connected to the main chain of the hook through a chain, and the length of the chain is equal to the distance between the lifting ear and the connection point of the hook main chain when the hook head opening is in a horizontal position.
[0007] The beneficial effects of the utility model are:
[0008] The utility model adds a counterweight rod and a counterweight block on the upper part of the hook. The torque formed by the counterweight rod and the counterweight block relative to the lifting ring is greater than the torque formed by the hook relative to the lifting ring. The hook can be rotated counterclockwise with the lifting ring as the center when no weight is hung on the hook head. The hook head rotates counterclockwise to a horizontal position, and the overhead crane moves the hook to complete automatic unhooking.
[0009] The utility model has a simple structure and is easy to use. After the goods are hoisted into place, the overhead crane descends and the hook can be automatically unhooked. There is no need for a rigger to assist in the unhooking operation. Its use can reduce the safety risks and labor costs of manual operations and can improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model;
[0011] Figure 2 It is a schematic diagram of the lifting state of the utility model.
[0012] The markings in the figure are as follows: hook main chain 1, lifting ring 2, hook body 3, hook head 4, counterweight rod 5, counterweight block 6, lifting ear 7, chain 8, and cargo 9. DETAILED DESCRIPTION
[0013] The utility model is composed of a hook and a counterweight rod 5, a counterweight block 6, a lifting lug 7 and a chain 8.
[0014] As shown in the figure, the hook is a universal structure, which includes a hook main chain 1, a lifting ring 2, a hook body 3, and a hook head 4. The lifting ring 2 is connected to the hook body 3 and the hook head 4 as a whole, and the lifting ring 2 is connected to the hook main chain 1.
[0015] As shown in the figure, the counterweight rod 5 is a steel round steel rod, the rod body of the counterweight rod 5 is in the same plane as the hook plane, the counterweight rod 5 is located on the opening side of the hook body 3 relative to the hook head 4, the lower end of the counterweight rod 5 is welded to the connection between the upper end of the hook body 3 and the lifting ring 2, and the length direction of the counterweight rod 5 is parallel to the opening direction of the hook head 4.
[0016] As shown in the figure, the upper end of the rod body of the counterweight rod 5 is threaded, the counterweight block 6 is a cylinder, and there is a screw hole on the central axis of the length direction of the cylinder of the counterweight block 6, which matches the screw hole on the upper end of the counterweight rod 5. The counterweight rod 5 and the counterweight block 6 are connected by threads, and the counterweight force can be adjusted by rotating the counterweight block 6. The torque formed by the counterweight rod 5 and the counterweight block 6 relative to the lifting ring 2 is greater than the torque formed by the hook body 3 and the hook head 4 relative to the lifting ring 2. When the hook does not hang the cargo 9, under the action of the torque of the counterweight rod 5 and the counterweight block 6, the hook as a whole rotates counterclockwise with the lifting ring 2 as the center, and the hook head 4 rotates counterclockwise to a horizontal position, the overhead crane moves the hook, and the hook head 4 withdraws backward from the lifting hole of the hanging cargo 9, and the automatic hook removal action can be completed.
[0017] The figure shows that a lifting lug 7 is welded on the cylindrical side wall of the counterweight block 6, and the lifting lug 7 is connected to the main chain 1 of the hook through a chain 8. The length of the chain 8 is equal to the distance between the connection point of the lifting lug 7 and the main chain 1 of the hook when the hook head 4 is in a horizontal position. If the length of the chain 8 is less than the length of the hook head 3 when the opening is in a horizontal position, the counterweight rod 5 cannot be rotated downward to the right position, and the hook head 4 cannot automatically unhook; if the length of the chain 8 is too long, the hook head 4 is completely inverted when unloaded, and it is inconvenient for the rigger to perform the next hooking operation. Therefore, the optimal length of the chain 8 is to ensure that the opening of the hook head 4 is in a horizontal position after the hook is unhooked, which is convenient for subsequent hooking operations.
[0018] The use process of the utility model is as follows:
[0019] After the hook head 4 of the hook is hung with the cargo 9, since the weight of the cargo 9 is much greater than the weight of the counterweight rod 5 and the counterweight block 6, under the gravity of the cargo 9, the hook body 3 is in a vertical position, and the hook head 4 hoists the cargo 9, at this time the chain 8 is in a relaxed state;
[0020] When the cargo 9 is hoisted into place, the overhead crane descends, the bottom surface of the cargo 9 contacts the supporting surface on which the cargo 9 is placed, the hook main chain 1 is relaxed, the hook descends, the gravity effect of the cargo 9 on the hook disappears, and under the torque of the counterweight rod 5 and the counterweight block 6, the hook as a whole rotates counterclockwise with the lifting ring 2 as the center, and the hook head 4 rotates counterclockwise to a horizontal position, the overhead crane moves the hook main chain 1 and the hook body 3 backwards, and the hook head 4 withdraws backwards from the hanging ring of the hanging cargo 9, and automatic unhooking can be achieved.
[0021] An embodiment of the present utility model is as follows:
[0022] The diameter of the counterweight rod 5 is 40 mm and the length is 400 mm;
[0023] The diameter of the counterweight 6 is 120 mm and the height is 90 mm;
[0024] The chain 8 has a diameter of 6 mm and a length of 600 mm.
Claims
1. A hook capable of automatically removing the hook, comprising a hook main chain (1), a lifting ring (2), a hook body (3), and a hook head (4), wherein the lifting ring (2) is connected to the hook body (3) and the hook head (4) as a whole, and the lifting ring (2) is connected to the hook main chain (1), characterized in that: The utility model also comprises a counterweight rod (5) and a counterweight block (6). The rod body of the counterweight rod (5) is coplanar with the hook plane. The counterweight rod (5) is located on the side of the hook body (3) opposite to the opening of the hook head (4). The lower end of the counterweight rod (5) is welded to the connection between the upper end of the hook body (3) and the lifting ring (2). The length direction of the counterweight rod (5) is parallel to the opening direction of the hook head (4). The upper end of the counterweight rod (5) is connected to the counterweight block (6). The moment formed by the counterweight rod (5) and the counterweight block (6) relative to the lifting ring (2) is greater than the moment formed by the hook body (3) and the hook head (4) relative to the lifting ring (2).
2. The hook capable of automatically removing the hook according to claim 1, characterized in that: The counterweight rod (5) has a thread on the upper end of the rod body, the counterweight block (6) is a cylinder, a screw hole is provided on the central axis of the length direction of the cylinder of the counterweight block (6), the screw hole matches the thread on the upper end of the counterweight rod (5), the counterweight rod (5) and the counterweight block (6) are connected by a thread, a lifting lug (7) is welded on the side wall of the cylinder of the counterweight block (6), the lifting lug (7) is connected to the main chain (1) of the hook through a chain (8), and the length of the chain (8) is equal to the distance between the connection point of the lifting lug (7) and the main chain (1) of the hook when the opening of the hook head (4) is in a horizontal position.