Self-discharging hook based on barycenter adjustment

Abstract

The present application relates to the technical field of hooks, and discloses a self-unloading hook based on gravity center adjustment, which comprises a hook body and a base, the hook body and the base are movably connected at a connecting shaft, the hook body is divided into two parts by the connecting shaft, the lower part is provided with a bent hook, and the upper part is provided with a free end, a sliding groove is arranged on the free end, a sliding shaft is movably connected in the sliding groove, a straight groove is arranged on the base, the bottom end of a spring is mounted on the bottom wall of the straight groove, and connecting rods are fixedly connected to the front and rear parts of the top of the spring. The present application solves the problem of automatic unloading of goods in the loading and unloading, installation and hoisting operation of goods, avoids the problem of unhooking in the operation process, reduces the processing difficulty compared with other self-unloading hooks, effectively prevents the unhooking condition caused by the shaking of the hook, and is suitable for professional needs under harsh conditions.

Description

[0001] This application is a divisional application of patent application number 202310126865.1, filed on February 17, 2023, entitled "An Invention Patent Application for a Self-Unloading Hook". Technical Field

[0002] This invention relates to the field of lifting hook technology, and more specifically, to a self-unloading lifting hook based on center of gravity adjustment. Background Technology

[0003] In the loading, unloading, installation, and hoisting of goods (including drone-borne hoisting), hooks are essential components. Traditional unloading methods, which involve manually separating the double hooks from the goods, are not only time-consuming and labor-intensive but also unsafe. Furthermore, manual unloading cannot meet the demands of automated and intelligent production. While automatic unloading hooks exist, their design flaws fail to address the potential for hook detachment during operations, such as significant shaking, collisions, or rapid descents. Summary of the Invention

[0004] In view of this, the present invention proposes a self-unloading hook based on center of gravity adjustment, which aims to solve the problem of automatic unloading of items in the current technology of loading, unloading, installation and hoisting operations, while avoiding the problem of hook detachment during operation.

[0005] This invention proposes a self-unloading hook based on center of gravity adjustment, including a hook body and a base. The hook body and the base are movably connected at a connecting shaft. The hook body is divided into two parts by the connecting shaft, with the lower part being a hook and the upper part being a free end. The hook body has a center of gravity adjustment component, and the base has a center of gravity adjustment control component. The center of gravity adjustment component includes a slide groove and a sliding shaft, wherein the slide groove is disposed on the free end and the sliding shaft is located inside the slide groove; The center of gravity adjustment control component includes a straight groove, a spring, and connecting rods. The straight groove is disposed on the base, the bottom end of the spring is mounted on the bottom wall of the straight groove, and connecting rods are fixedly connected to both the front and rear sides of the top of the spring.

[0006] Furthermore, the upper part of the groove is provided with a recess.

[0007] Furthermore, the center of gravity adjustment control component also includes a slider, which is slidably disposed inside the straight groove, with the bottom of the slider fixedly connected to the top of the spring, and the connecting rod disposed on the slider.

[0008] Furthermore, the center of gravity adjustment control component also includes a blocking member disposed on the connecting rod.

[0009] Furthermore, the base has an inner top hole, and the upper surface of the slider is directly connected to a suspension connector or connected to a suspension seat. The suspension connector passes through the hole and extends to the outside.

[0010] Furthermore, the lower part of the groove is provided with an enlarged portion.

[0011] Furthermore, the sliding shaft has a groove in the middle and the diameter of the groove is smaller than the width of the slide groove at each point, while the diameter of both ends of the sliding shaft is larger than the width of the slide groove at each point except for the enlarged part.

[0012] Furthermore, the bottom of the base is also equipped with a locking mechanism.

[0013] Working principle: Option 1: In this option, the lower part of the slide groove has an enlarged section. When installing the sliding shaft, first pass the sliding shaft through the enlarged section into the hook body, rotate the hook body clockwise so that the slide groove of the hook body is not obstructed by the connecting rod, move the sliding shaft along the slide groove to the upper part of the slide groove, and then rotate the hook body counterclockwise to the position specified in the instruction manual. Figure 1 In the middle position, before the hook body hooks an item, the slider on the base is located at the lower part of the straight groove, and the connecting rod is located above the expanded part of the groove. The sliding shaft is placed at the lower part of the groove and pressed on the connecting rod. Because the sliding shaft is supported by the connecting rod and is not pressed on the hook body, the center of gravity of the hook body is located at the point where the connecting shaft is biased towards the hook, which facilitates hanging items. After the item is hung, when lifting, the slider rises, driving the connecting rod to rise. At the same time, the connecting rod pushes the sliding shaft to rise. During the process of the sliding shaft rising, because the groove has a certain slope in the vertical direction... With the blocking effect of the blocking component, the free end is pushed to the right by the sliding shaft. When the slider rises to the top of the straight groove, the sliding shaft also rises to the top of the groove. At this time, the free end will return to the position before lifting. At the same time, the sliding shaft is blocked by the blocking component to the top of the recess. When the item is lifted to the destination and the item is put down, the slider returns to the bottom of the straight groove under the pull of the spring and gravity, while the sliding shaft remains in the recess of the free end. At this time, the center of gravity of the hook is located on the free end, causing the hook to rotate around the connecting shaft and the item is unhooked.

[0014] Under normal circumstances, the hook will not rotate during hoisting, ensuring safe production and preventing cargo from detaching. However, consider situations where the item is not directly under the hook due to strong winds or other conditions. For example, if the item is blown to the lower left, the hook will be under stress. When the stress is sufficient, the hook may tend to rotate clockwise, but this is prevented by the connecting rod. If the item is blown to the lower right, the hook will tend to rotate counter-clockwise, but this rotation is restricted by the base, preventing the item from detaching. If the item experiences weightlessness due to shaking or rapid descent, the connecting rod will descend, and the sliding shaft may press against the indentation. The hook will then begin to rotate clockwise, but as long as the connecting rod does not descend close to the expansion section, the hook's rotation will be blocked, preventing the item from detaching. After the weightlessness disappears, the connecting rod rises again, restoring the hook to its pre-weightless state. Therefore, as long as the weightlessness period is not too long, the item will not detach.

[0015] Option 2: The sliding shaft is fixedly placed in the groove at the free end of the hook body during production. In this option, the lower part of the groove does not have an enlarged part. Except for the fact that the sliding shaft does not need to be installed in the groove, the working principle is the same as that of Option 1.

[0016] Option 3 has a locking mechanism at the bottom of the base. Before lifting, when hanging items, rotate the hook clockwise. After hanging the items, rotate the hook counterclockwise. The working principle is the same as Option 1. This option is safer and can prevent items from coming off the hook during the lifting process due to some reason, such as shaking or excessive descent speed.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention solves the problem of automatic unloading of items during loading, unloading, installation and hoisting operations, while avoiding the problem of hook detachment during operation. Compared with other self-unloading hooks, it reduces the processing difficulty and can effectively prevent hook detachment when the hook shakes. It is suitable for professional needs under harsh conditions. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the invention with a locking mechanism; Figure 3 This is a schematic diagram of the sliding shaft in this invention.

[0019] Among them, 1. Hook body; 101. Bent hook; 102. Free end; 2. Base; 3. Slide groove; 301. Recess; 302. Enlarged part; 4. Opening; 5. Connecting shaft; 6. Sliding shaft; 7. Straight groove; 8. Slider; 9. Suspension connector; 10. Suspension seat; 11. Hole; 12. Spring; 13. Connecting rod; 14. Barrier; 15. Locking. Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Example: like Figure 1 and Figure 3 As shown, this embodiment of the invention provides a self-unloading hook, including a hook body 1 and a base 2. The base 2 has an opening 4 at its bottom. The hook body 1 and the base 2 are movably connected at a connecting shaft 5. The hook body 1 is divided into two parts by the connecting shaft 5. One part is called a bent hook 101, and the other part is called a free end 102. The free end 102 is provided with a sliding groove 3. A sliding shaft 6 is movably connected inside the sliding groove 3. The base 2 is provided with a straight groove 7. A spring 12 is installed on the bottom wall of the straight groove 7. A connecting rod 13 is fixedly connected to the front and rear parts of the top of the spring 12.

[0022] Furthermore, the upper part of the groove 3 is provided with a recess 301.

[0023] Furthermore, the center of gravity adjustment control component also includes a slider 8, which is slidably disposed inside the straight groove 7. The bottom of the slider 8 is fixedly connected to the top of the spring 12, and the connecting rod 13 is disposed on the slider 8.

[0024] Furthermore, the center of gravity adjustment control component also includes a blocking member 14, which is disposed on the connecting rod 13.

[0025] Furthermore, the base 2 has a hole 11 at its inner top. The lower end of the hole 11 is connected to the straight groove 7, and the upper end of the hole 11 is connected to the outside. The suspension connector 9 is a sling. The suspension connector 9 is directly welded or fixedly connected to the slider 8 or connected to the slider 8 through the suspension seat 10. The suspension connector 9 passes through the hole 11 and extends to the outside.

[0026] Furthermore, the slide groove 3 is shaped like an inverted question mark and has a certain inclination in the vertical direction. The upper part of the slide groove 3 has a recess 301, and the lower part of the slide groove 3 has an enlarged part 302. By rotating the hook body 1, the sliding shaft 6 can be installed or removed from the enlarged part 302. When the sliding shaft 6 has no pressure or very little pressure on the hook body 1, the center of gravity of the hook body 1 is located at the point where the connecting shaft 5 is biased towards the bent hook 101, and the hook body 1 is in an attached position. Figure 1 At this point, the center of the enlarged part 302 and the center of the recess 301 are basically on the same vertical line. When the sliding shaft 6 moves to the recess 301 and presses on the hook body 1, the center of gravity of the hook body 1 is located at the free end 102 of the connecting shaft 5.

[0027] Furthermore, the sliding shaft 6 is a cylinder with a groove in the middle. The diameter of the groove in the middle of the sliding shaft 6 is smaller than the width of the groove 3 at all points, and the diameter of both ends of the sliding shaft 6 is larger than the width of the groove 3 at all points except for the enlarged part 302.

[0028] It should be noted that the slider 8 can also be cylindrical or other shapes, and the sliding shaft 6 can also be cuboid or other shapes.

[0029] When no load is being lifted, the connecting rod 13 is positioned above the bottom expansion portion 302 of the slide groove 3, and the sliding shaft 6 is located on the connecting rod 13 and blocked by the blocking member 14. The shapes of the connecting rod 13 and the blocking member 14 are not limited to those shown in the figure; they mainly need to perform the corresponding functions. In order to ensure the safety of lifting as much as possible and to avoid the phenomenon of unhooking, the length of the connecting rod 13 should meet the following conditions: only when the connecting rod 13 is at or near the position of the load. Figure 1 When the position shown is such that the rotation of the hook 1 with the sliding shaft 6 is unimpeded, the sliding shaft 6 is located at the recess 301.

[0030] Specifically, before the hook 101 hooks an item, the connecting rod 13 is located at the lower part of the straight groove 7. The connecting rod 13 supports the sliding shaft 6, so that the sliding shaft 6 exerts little or no pressure on the free end 102, and the center of gravity of the hook body 1 is located on the hook 101. After the hook 101 hooks an item, the connecting rod 13 rises, and at the same time, the connecting rod 13 pushes the sliding shaft 6 upward. During the upward movement of the sliding shaft 6, due to the vertical inclination of the groove 3 and the obstruction of the sliding shaft 6, the free end 102 is pushed away by the sliding shaft 6. When the hook 13 rises to the top of the straight groove 7, the free end 102 will return to the position before lifting. At the same time, the sliding shaft 6 is pushed above the recess 301 by the blocking member 14. At this time, the sliding shaft 6 is still supported by the connecting rod 13 and does not exert pressure on the free end 102. When the item is lowered, due to the tension of the spring 12 and the action of gravity, the connecting rod 13 moves downward, and the sliding shaft 6 remains in the recess 301 of the free end 102. At this time, the center of gravity of the hook 1 is located on the free end 102, causing the hook 1 to rotate until the opening of the hook 101 faces downward, and the item is unhooked.

[0031] It should also be noted that in this embodiment, although the sliding shaft 6 is installed in the slide groove 3, it will generally not fall out of the slide groove 3 unless the operator actively removes the sliding shaft 6 from the slide groove 3.

[0032] In another embodiment, see Figure 1 As shown, the slide groove 3 does not have the enlarged portion 302, and the shape of the slide groove 3 is an inverted 7-shape. In this embodiment, the sliding shaft 6 is fixed in the slide groove 3 during production. At this time, the diameter of the groove in the middle of the sliding shaft 6 is smaller than the width of the slide groove 3 at all points, and the diameters at both ends of the sliding shaft 6 are larger than the width of the slide groove 3 at all points.

[0033] In yet another embodiment, see [link to relevant documentation] Figure 2 As shown, the bottom of the base 2 is also provided with a locking 15. When hanging items before lifting, rotate the hook 1 clockwise. After hanging the items, rotate the hook 1 counterclockwise. The working principle thereafter is the same as described above. This embodiment is safer and can prevent the items from coming off the hook 101 from the opening of the hook 101 due to some reason, such as when the items shake or when the lifting speed is too fast.

[0034] The core idea of ​​this invention is to control the rotation of the hook body 1 by adjusting its center of gravity, thereby controlling the unhooking of the hung item. Therefore, the center of gravity adjustment component is not limited to the combination of the slide groove 3 and the sliding shaft 6. For example, if a heavy object is hung on the side of the free end 102, the heavy object can also slide along the slide groove 3, thereby adjusting the center of gravity of the hook body 1. The center of gravity adjustment control component is also not limited to the straight groove 7, the slider 8, the spring 12, the connecting rod 13, and the blocking member 14. For example, the slider 8 may be omitted, the suspension connector 9 may be directly connected to the spring 12 and the connecting rod 13, the connecting rod 13 and the blocking member 14 may be integrated, and the recess 301 may be omitted, or the blocking member 14 may be omitted altogether.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A self-unloading hook based on center of gravity adjustment, comprising a hook body (1) and a base (2), characterized in that: The hook (1) and the base (2) are movably connected at the connecting shaft (5). The hook (1) is divided into two parts by the connecting shaft (5). The lower part is set as a hook (101) and the upper part is set as a free end (102). The hook (1) has a center of gravity adjustment component and the base (2) has a center of gravity adjustment control component. The center of gravity adjustment component includes a slide groove (3) and a sliding shaft (6), the slide groove (3) is disposed on the free end (102), and the sliding shaft (6) is located inside the slide groove (3); The center of gravity adjustment control component includes a straight groove (7), a spring (12) and a connecting rod (13). The straight groove (7) is disposed on the base (2). The bottom end of the spring (12) is installed on the bottom wall of the straight groove (7). The connecting rod (13) is fixedly connected to both the front and rear sides of the top of the spring (12).

2. The self-unloading hook based on center of gravity adjustment according to claim 1, characterized in that: The upper part of the groove (3) is provided with a recess (301).

3. The self-unloading hook based on center of gravity adjustment according to claim 1, characterized in that: The center of gravity adjustment control component also includes a slider (8), which is slidably disposed inside the straight groove (7). The bottom of the slider (8) is fixedly connected to the top of the spring (12), and the connecting rod (13) is disposed on the slider (8).

4. The self-unloading hook based on center of gravity adjustment according to claim 3, characterized in that: The center of gravity adjustment control assembly also includes a stopper (14), which is disposed on the connecting rod (13).

5. The self-unloading hook based on center of gravity adjustment according to claim 4, characterized in that: The base (2) has a hole (11) at its inner top. The upper surface of the slider (8) is directly connected to a suspension connector (9) or is connected to a suspension seat (10). The suspension connector (9) passes through the hole (11) and extends to the outside.

6. The self-unloading hook based on center of gravity adjustment according to claim 1, characterized in that: The lower part of the chute (3) is provided with an enlarged part (302).

7. The self-unloading hook based on center of gravity adjustment according to claim 6, characterized in that: The sliding shaft (6) has a groove in the middle and the diameter of the groove is smaller than the width of the slide groove (3) at each point. The diameter of both ends of the sliding shaft (6) is larger than the width of the slide groove (3) except for the enlarged part (302).

8. The self-unloading hook based on center of gravity adjustment according to any one of claims 1-7, characterized in that: The base (2) is also provided with a lock (15) at its bottom.

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