Ton bag self-unloading hook device
By designing a ton bag self-unloading hook device and utilizing intelligent control of electromagnets and weighing sensors, the automatic unhooking of ton bags is achieved, solving the problem of operators repeatedly walking between unloading areas and the safety hazards, and improving operational efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG FUSHENG CHEM CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-05
Smart Images
Figure CN224325033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ton bag self-unloading hook device. Background Technology
[0002] Ton bags, as a type of flexible transport packaging container, possess advantages such as moisture-proof, dust-proof, radiation-resistant, and robust safety, and have sufficient structural strength, making them widely used in the raw material receiving and warehousing process. In this process, warehouse operators need to secure the ton bags containing raw materials to the hooks of an overhead crane. After the ton bags are moved to the appropriate position, they are then manually removed from the crane hooks.
[0003] However, due to the large volume of raw materials arriving at once, the vast warehouse area, and the considerable distance between the unloading and placement areas, operators need to repeatedly move between the pre-loading and placement areas to secure and unload the ton bags, resulting in extremely high labor intensity. Furthermore, when relying on operators to perform the unhooking operation, they often have to work under the lifting equipment, posing a significant safety hazard and leading to unsatisfactory overall performance. Utility Model Content
[0004] The purpose of this utility model is to provide a ton bag self-unloading hook device to solve the problems that operators need to repeatedly walk between the unloading pre-retrieval and placement areas to unload ton bags, resulting in high labor intensity; and that when relying on operators to complete the unhooking, operators often work under the lifting equipment, posing a significant risk to their personal safety, resulting in poor performance.
[0005] To solve the above problems, the technical solution of this utility model is as follows:
[0006] A ton bag self-unloading hook device includes a cross-shaped lifting beam with a lifting ring connected to the center of the beam. Self-unloading hook assemblies are provided at the four ends of the lifting beam. Each self-unloading hook assembly includes a hook and a lifting rod fixedly connected to one end of the lifting beam. A pin is provided at the lower end of the lifting rod, and the upper end of the hook is rotatably connected to the pin. An extension section is provided at the upper end of the hook, and a counterweight is fixedly connected to the extension section.
[0007] Furthermore, a limiting post is fixedly connected to the outside of the boom, and when the hook flips upward, the back of the hook abuts against the limiting post.
[0008] Furthermore, lugs are fixedly connected to both the back of the hook and the boom, and a spring is connected between the two lugs.
[0009] Furthermore, a limiting block is fixedly connected to the inside of the boom, so that when the hook flips downward, the back of the hook abuts against the limiting block.
[0010] Furthermore, an electromagnet is installed on the limit block.
[0011] Furthermore, a through hole is provided in the center of the cross-shaped lifting beam and a hollow weighing sensor is installed therein. The screw passes through the through hole and the hollow weighing sensor from top to bottom and is then fixedly connected to the nut. A limit plate is fixedly connected to the upper end of the screw, and the lifting ring is fixedly connected to the upper end of the screw.
[0012] Furthermore, an electrical box is installed on the lifting beam, which contains a battery and a controller. Hollow load cells are connected to the input terminal of the controller, and each electromagnet is connected to the output terminal of the controller.
[0013] The beneficial effects of this utility model are as follows:
[0014] Reduced labor intensity: No manual unhooking is required. Once the ton bag is placed in the designated position and touches the ground, the hook is no longer pulled by the weight of the ton bag. Under the action of the counterweight, it will automatically flip and separate from the ton bag sling. This reduces the need for operators to walk repeatedly between the unloading and placement areas, and significantly reduces labor intensity.
[0015] Ensuring personal safety: This prevents operators from performing unhooking operations under the lifting equipment, fundamentally eliminating safety hazards in the process and ensuring the personal safety of operators.
[0016] Improved work efficiency: The automatic unhooking mechanism reduces manual intervention, speeds up the overall process of loading and unloading ton bags, and improves work efficiency.
[0017] Stability benefits from structural optimization: The limiting post prevents the hook from over-rotating upwards, avoiding the extension section or counterweight from snagging on the ton bag sling; the limiting block prevents the hook from over-rotating downwards, ensuring the stability of the device's operation. The spring design allows the hook to rotate quickly during bag unloading, preventing jamming due to rusted pins that could affect rotation.
[0018] Convenient operation and intelligent control: The electromagnet can attract and fix the hook, making it convenient for workers to hang the ton bag; the hollow weighing sensor works with the controller to automatically detect whether the ton bag has fallen to the ground and control the electromagnet to automatically release the hook when it is de-energized, making the operation more convenient and intelligent. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model.
[0021] Figure 2 This is a top view of the structure of this utility model.
[0022] Figure 3 This is a schematic diagram of the structure of this utility model in practice.
[0023] Figure 4 This is a schematic diagram of the structure of this utility model in practice.
[0024] Figure 5 This is the circuit diagram of this utility model.
[0025] In the diagram: 1. Lifting beam; 2. Electrical box; 3. Lifting ring; 4. Limiting plate; 5. Screw; 6. Electromagnet; 7. Pin; 8. Hollow load cell; 9. Counterweight; 10. Limiting block; 11. Hook; 12. Hanging lug; 13. Spring; 14. Limiting post; 15. Lifting rod; 16. Ton bag; 17. Lifting strap. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] like Figures 1 to 4 As shown, a ton bag self-unloading hook 11 device includes a cross-shaped lifting beam 1, with a lifting ring 3 connected to the center of the lifting beam 1. Self-unloading hook assemblies are respectively provided at the four ends of the lifting beam 1. The self-unloading hook assembly includes a hook 11 and a lifting rod 15 fixedly connected to one end of the lifting beam 1. A pin 7 is provided at the lower end of the lifting rod 15. The upper end of the hook 11 is rotatably connected to the pin 7. An extension section is provided at the upper end of the hook 11, and a counterweight 9 is fixedly connected to the extension section.
[0028] In implementation, the four slings of the ton bag are suspended from four hooks 11. A crane lifts the ton bag, and after it is lifted to the designated position, the crane lowers it to the ground. The hooks 11 are no longer pulled by the weight of the ton bag. Since the weight of the counterweight 9 at the upper end of the hook 11 is greater than the weight at the lower end of the hook 11, the hook 11 flips under the action of gravity, thereby separating the hook 11 from the ton bag slings. This achieves self-unloading of the ton bag without the need for operators to remove the hooks, reducing the labor intensity of operators and ensuring their personal safety.
[0029] Furthermore, such as Figure 4 As shown, a limiting post 14 is fixedly connected to the outside of the boom 15. When the hook 11 flips upward, the back of the hook 11 abuts against the limiting post 14. The limiting post 14 is used to prevent the hook 11 from flipping upward excessively, avoid the extension section or counterweight 9 from getting caught on the ton bag sling, ensure a smooth unhooking process, and improve the stability of the device operation.
[0030] Furthermore, hook lugs 12 are fixedly connected to both the back of the hook 11 and the boom 15, and a spring 13 is connected between the two hook lugs 12. The spring 13 can pull the hook 11 to rotate quickly when the ton bag is unloaded, preventing the hook from being obstructed due to rust and jamming of the pin 7, ensuring reliable unhooking action, and improving the practicality and durability of the device.
[0031] Furthermore, a limiting block 10 is fixedly connected to the inner side of the boom 15. When the hook 11 flips downward, the back of the hook 11 abuts against the limiting block 10. The limiting block 10 is used to limit the hook 11, preventing the hook 11 from flipping downward excessively, preventing the hook from affecting subsequent sling suspension operations due to an excessive flipping angle, and ensuring the stability of the hook after it is reset.
[0032] Furthermore, an electromagnet 6 is installed on the limiting block 10. The electromagnet 6 attracts and fixes the hook 11, preventing the hook 11 from rotating on its own when energized. This makes it easier for workers to hang the ton bag onto the sling. In addition, to prevent the limiting block 10 from being magnetized, the limiting block 10 and the lifting beam 1 are made of stainless steel.
[0033] Furthermore, a through hole is provided in the center of the cross beam 1 and a hollow load cell 8 is installed therein. The screw 5 passes through the through hole and the hollow load cell 8 from top to bottom and is fixedly connected to the nut. A limit plate 4 is fixedly connected to the upper end of the screw 5, and the lifting ring 3 is fixedly connected to the upper end of the screw 5.
[0034] Furthermore, an electrical box 2 is installed on the lifting beam 1. The electrical box 2 contains a battery and a controller (e.g., CSU8RP1185). The hollow load cell 8 is connected to the input terminal of the controller, and each electromagnet 6 is connected to the output terminal of the controller. The battery is used to power the controller, the load cell 8 and the electromagnet 6.
[0035] The controller operates through the following steps:
[0036] S1: Initially, the controller controls each electromagnet 6 to be energized, and the operator manually rotates the upper end of the hook to attract the electromagnet 6. At this time, the hook 11 is in a vertical state, which makes it convenient for the operator to hang the ton bag sling onto the hook 11.
[0037] S2: After the crane lifts the ton bag to the designated location, the ton bag contacts the ground. At this time, the weighing sensor 8 detects a decrease in weight, thus determining that the ton bag has landed. After 2 seconds, the controller controls the electromagnet 6 to de-energize. Under the pull of the spring 13 and the action of gravity, the hook 11 flips upward, and the lower end of the hook flips outward to detach from the sling.
[0038] S3: After the hook 11 separates from the sling, the crane lifts the lifting beam 1 upwards to complete the lifting of the ton bag.
[0039] In addition, the electromagnet's function is mainly reflected in two aspects. First, when the hook is unloaded, the electromagnet generates magnetic force when energized, attracting and fixing the hook, preventing it from rotating on its own. This allows the operator to maintain a stable hook when suspending the ton bag sling, facilitating quick and accurate hooking of the sling, simplifying the sling suspension process, and improving the ease of hooking operation. Second, when the controller receives a signal from the weighing sensor indicating the ton bag has landed, it de-energizes the electromagnet. The electromagnet loses its attraction to the hook, and the hook begins to flip and disengage under the weight of the counterweight, thus achieving an automatic disengagement process. Furthermore, the limit block and lifting beam are made of stainless steel to prevent magnetization by the electromagnet, ensuring the normal functioning of the electromagnet and the stable operation of the entire hook device.
[0040] The combination of the load cell and controller enables intelligent automatic unhooking control logic for the hook. The load cell, installed in the through-hole at the center of the cross-shaped lifting beam, works in conjunction with the screw, limit plate, and other structures to detect the weight of the ton bag in real time. When the ton bag is lifted, the load cell transmits the detected weight data to the controller. When the ton bag reaches the designated position and touches the ground, the weight data changes. The controller, according to a preset program, determines that the ton bag has landed and then issues a command. This command is transmitted to the electromagnet, achieving automatic unhooking. This process eliminates the need for manual judgment of whether the ton bag has landed and manual unhooking, greatly reducing human intervention, improving operational efficiency, reducing the possibility of human error, and further ensuring the safety of operators, avoiding potential dangers they might face while waiting under the lifting equipment and operating the unhooking mechanism.
[0041] The embodiments described in this specification are merely examples of implementations of the inventive concept. The scope of protection of this utility model should not be considered as limited to the specific forms described in the embodiments. The scope of protection of this utility model also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims
1. A ton bag self-unloading hook device, characterized in that: It includes a cross-shaped lifting beam with a lifting ring connected to the center of the beam. Self-unloading hook assemblies are provided at the four ends of the beam. Each self-unloading hook assembly includes a hook and a lifting rod fixedly connected to one end of the beam. A pin is provided at the lower end of the lifting rod, and the upper end of the hook is rotatably connected to the pin. An extension section is provided at the upper end of the hook, and a counterweight is fixedly connected to the extension section.
2. The ton bag self-unloading hook device according to claim 1, characterized in that: A limit post is fixedly connected to the outside of the boom, and when the hook flips upward, the back of the hook abuts against the limit post.
3. The ton bag self-unloading hook device according to claim 2, characterized in that: Lugs are fixedly connected to both the back of the hook and the boom, and a spring is connected between the two lugs.
4. The ton bag self-unloading hook device according to claim 1, characterized in that: A limit block is fixedly connected to the inside of the boom, and when the hook flips downward, the back of the hook abuts against the limit block.
5. The ton bag self-unloading hook device according to claim 1, characterized in that: An electromagnet is installed on the limit block.
6. The ton bag self-unloading hook device according to claim 5, characterized in that: A through hole is provided in the center of the cross-shaped lifting beam, and a hollow weighing sensor is installed therein. The screw passes through the through hole and the hollow weighing sensor from top to bottom and is then fixedly connected to the nut. A limit plate is fixedly connected to the upper end of the screw, and the lifting ring is fixedly connected to the upper end of the screw.
7. A ton bag self-unloading hook device according to claim 6, characterized in that: An electrical box is installed on the lifting beam. Inside the electrical box are a battery and a controller. Hollow load cells are connected to the input terminal of the controller, and each electromagnet is connected to the output terminal of the controller.