Self-locking, anti-falling and automatic unhooking lifting hook device

Abstract

The invention discloses a self-locking anti-dropping automatic unhooking lifting hook device which comprises a lifting hook body, a lifting hook structure with an opening in one side is arranged at the lower end of the lifting hook body, the lifting hook device further comprises an outer wrapping assembly and a circulating locking rod, the lifting hook body is sleeved with the outer wrapping assembly in a vertically movable mode, and a side opening is formed in the outer wrapping assembly and corresponds to the opening of the lifting hook; an elastic structure used for resetting the outer wrapping assembly is arranged between the top of the outer wrapping assembly and the lifting hook body, one end of the circulating locking rod is movably arranged on the lifting hook body, a circulating groove structure is arranged on the outer wrapping assembly, and the other end of the circulating locking rod is movably located in the circulating groove structure. The self-locking, anti-dropping and automatic-unhooking lifting hook device is reasonable in structural design, locking is achieved by means of the self weight of goods through primary pulling, unlocking is achieved by means of secondary pulling, manual locking and unhooking do not need to be conducted on site, the number of site operators is reduced, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hooks, in particular to a self-locking, anti-dropping and automatic-dropping hook device. Background Art

[0002] At present, most of the hooks used for overhead cranes in factories to lift goods are equipped with anti-unhooking devices, but most of them need to be locked and unlocked manually, which is very cumbersome. There are also a large number of automatic locking and unlocking anti-unhooking devices on the market, most of which achieve locking and unlocking functions through electricity, mechanical structures, etc., and the risk of failure is relatively large.

[0003] For example, patent CN217625175U discloses a self-locking anti-dropout nylon special cable tie, comprising a strip-shaped cable tie body, and a locking head. A connecting portion is formed at one end of the strip-shaped cable tie body and a through-head is formed at the other end, and the strip-shaped cable tie body is connected to the locking head through the connecting portion; a plurality of radially arranged strip grooves are evenly spaced along the length direction on the surface of the strip-shaped cable tie body, and a protective portion is arranged between the strip-shaped cable tie body and the connecting portion; the locking head comprises an upper clamping portion and a lower cavity, and anti-dropout teeth for fixing the strip-shaped cable tie body are obliquely arranged in the cavity, and the anti-dropout teeth are movably connected to the inner wall of the cavity; this structure only includes a self-locking structure, and cannot automatically achieve unhooking, and requires manual operation to unlock.

[0004] For another example, patent CN220622347U discloses a self-locking and anti-disengagement spiral safety buckle, which includes a spiral sleeve, a turning handle, a limit plate and a threaded rod. The left and right sides of the spiral sleeve are provided with turning handles, and a limit plate is installed at the bottom of the spiral sleeve, and one end of the turning handle is connected to the threaded rod; it also includes: an air bag, which is arranged inside the spiral sleeve, and the air bag is connected to the seal through a connecting tube; a limit member, which is arranged inside the spiral sleeve. The self-locking and anti-disengagement spiral safety buckle has a limit plate fixed at the bottom of the spiral sleeve, and the limit plate and the inner wall of the turning handle are provided with connecting holes, and an insert rod is engaged inside the connecting hole, so that the turning handle can be limited and fixed, effectively preventing the phenomenon of the turning handle being rotated due to accidental touch, and thus the threaded rod can maintain stability. This solution only includes a self-locking anti-disengagement structure, which requires manual operation to unlock. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a self-locking, anti-dropping and automatically unhooking hook device, which can automatically lock and unlock the hook by relying on the dead weight of the cargo without manual operation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The self-locking, anti-dropping and automatically unhooking hook device comprises a hook body, a hook structure with an opening on one side is provided at the lower end of the hook body, an outer package component and a circulation locking rod, the outer package component can be movably sleeved on the hook body up and down, a side opening is provided on the outer package component corresponding to the hook opening, an elastic structure for resetting the outer package component is provided between the top of the outer package component and the hook body, one end of the circulation locking rod is movably provided on the hook body, a circulation groove structure is provided on the outer package component, and the other end of the circulation locking rod is movably located in the circulation groove structure.

[0008] Further:

[0009] The outer package component is a steel sleeve structure with openings at the top and the bottom.

[0010] The elastic structure is a spring, and the top of the outer package component and the top of the hook body are connected by the spring.

[0011] The steel sleeve structure is an open cavity structure formed by folding steel plates.

[0012] The top end of the hook body is connected with a lifting ring via a pin shaft, and the top end of the outer package component is provided with a notch structure for avoiding the end of the pin shaft.

[0013] The top of the hook body is an arc-shaped structure, and an arc-shaped groove is arranged on the arc-shaped structure. Two ends of the spring are respectively connected to two sides of the top of the outer package component, and the spring is located in the arc-shaped groove.

[0014] The outer corner of the side opening is an arc-shaped chamfered structure.

[0015] A connecting hole is arranged at the lower part of the hook body, the lower end of the circulating lock rod is rotatably arranged in the connecting hole, the upper end of the circulating lock rod is a bent lock hook, and the bent lock hook is movably arranged in the circulating groove structure.

[0016] The circulation groove structure is a heart-shaped groove structure.

[0017] The circulating locking rod is a Z-shaped rod structure.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The self-locking, anti-dropping and automatic unhooking hook device has a reasonable structural design. It relies on the deadweight of the goods and can be locked with one pull and unlocked with a second pull. No manual locking and unhooking is required on site, which reduces the number of on-site operators and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 It is a schematic diagram of the structure of the hook body of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the hook device of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the outsourcing component of the present invention.

[0024] Figure 4 Schematic diagram of the initial state of the device of the present invention.

[0025] Figure 5 It is a schematic diagram of the rising process state of the present invention.

[0026] Figure 6 It is a schematic diagram of the fully stressed state of the present invention.

[0027] Figure 7 This is a schematic diagram of the state of putting down a heavy object according to the present invention.

[0028] Figure 8 This is a schematic diagram of the present invention when it is pulled downward once.

[0029] Fig. 9 It is a schematic diagram of the release state of the present invention.

[0030] Fig.10 This is a schematic diagram of the present invention returning to the initial state.

[0031] Fig.11 It is a schematic diagram of the cargo lifting process of the present invention.

[0032] In the figure:

[0033] 1. Hook body, 2. Outer package components, 3. Spring, 4. Lifting ring, 5. Circulation groove structure, 6. Circulation locking rod. DETAILED DESCRIPTION

[0034] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0035] like Figures 1 to 11 As shown, the self-locking, anti-dropping and automatic unhooking hook device comprises a hook body 1, an outer package component 2 and a circulating locking rod 6; a hook structure with an opening on one side is provided at the lower end of the hook body 1, the outer package component can be movably mounted on the hook body up and down, a side opening is provided on the outer package component 2 corresponding to the hook opening, an elastic structure for resetting the outer package component is provided between the top of the outer package component and the hook body, one end of the circulating locking rod is movably provided on the hook body, a circulating groove structure 5 is provided on the outer package component, and the other end of the circulating locking rod is movably located in the circulating groove structure.

[0036] The outer package component 2 is a steel sleeve structure that is open at the top and bottom. Furthermore, the steel sleeve structure is an open cavity structure formed by folding a steel plate, and is easy to manufacture.

[0037] The elastic structure is a spring 3, and the top of the outer package component and the top of the hook body are connected by the spring; further, the top of the hook body is an arc structure, and an arc groove is provided on the arc structure. The two ends of the spring are respectively connected to the two sides of the top of the outer package component, and the spring is located in the arc groove; the structure is compact, and is limited by the arc groove, and the structure is stable and reliable.

[0038] The top of the hook body 1 is connected to a lifting ring 4 via a pin shaft, and the top of the outer package component is provided with a notch structure for avoiding the end of the pin shaft.

[0039] The outer corner of the side opening is an arc-shaped chamfered structure to facilitate unlocking.

[0040] A connecting hole is provided at the lower part of the hook body, the lower end of the circulating lock rod is rotatably arranged in the connecting hole, the upper end of the circulating lock rod is a bent lock hook, the bent lock hook is movably arranged in the circulating groove structure, and the circulating lock rod can swing relative to the hook body;

[0041] The circulation locking rod is a Z-rod structure with a simple structure; the circulation groove structure is a heart-shaped groove structure, the top of the circulation groove structure is provided with a groove for positioning, and the bottom of the circulation groove structure is a pointed structure. By utilizing circulation, the locking hook at the upper end of the circulation locking rod can move in the circulation groove to control the upper and lower positions of the outsourced component on the hook body, thereby controlling the corresponding positions of the side opening of the outsourced component and the opening of the hook structure to achieve locking and unhooking control.

[0042] Specific examples of the present invention are:

[0043] The hook device mainly includes a hook body and an outer package component, and the hook is 90mm wide and 220mm long;

[0044] A 10mm wide and 5mm deep groove is milled on the top of the hook body to place the spring. Connect both ends of the spring to the holes of the outer package component. The length of the spring in the relaxed state is required to be 25mm-29mm, and the longest can be stretched to 50mm.

[0045] like Figure 3 As shown, the outer package component is made of 2 mm thick steel plate, which is formed into a steel plate structure by stamping and then folded into a square cavity structure.

[0046] The core structure of the device is as follows: 1. Mill a 1mm deep circular groove on one side of the outer package component, the groove is located between the outer package structure and the hook body; 2. Drill a 2mm diameter hole on the surface of the hook; 3. A 75mm long, 2mm diameter Z-shaped rod, one section of the rod is threaded, connected to the hook through a nut, and the connecting end can rotate; 4. Assemble the above devices;

[0047] When the hook is in the initial state, the top of the locking rod is at the bottom of the groove;

[0048] When the hook starts to lift the cargo, the outer structure is forced to move downward, and at the same time, the top spring is stretched. Since the lower end of the groove is biased to the left, the top of the connecting rod moves steadily toward the right end of the groove.

[0049] When the hook is fully stressed, the outer structure is lowered to the lowest point. At this time, the top of the lock rod is at the highest point on the upper right side of the groove. The upper part of the outer structure completely blocks the opening of the hook to prevent it from falling off:

[0050] When the hook places the cargo on the ground, the anti-unhooking structure will not loosen, and the top of the lock rod is in the V-shaped groove at the top of the groove;

[0051] If and only if the overhead crane gently pulls the cargo upward (no need to lift it, just force it), the outer packaging structure will move downward because the top groove deviates to the right and the top of the lock rod moves steadily to the upper left;

[0052] Then the overhead crane stops pulling and returns to a stress-free state. At this time, the outer structure moves upward as the spring pulls it, and the top of the locking rod moves toward the bottom of the groove.

[0053] Finally, as the spring pulls, the outsourcing structure returns to its initial position, achieving uncoupling.

[0054] The self-locking, anti-dropping and automatic unhooking hook device of the present invention has a reasonable structural design, relies on the deadweight of the goods, and is locked by pulling once and unlocked by pulling twice. No manual locking and unhooking is required on site, which reduces the number of on-site operators and improves safety.

[0055] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0056] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A self-locking, anti-dropping and automatic unhooking hook device, comprising a hook body, wherein the lower end of the hook body is provided with a hook structure with one side open, characterized in that: It also includes an outer packaging component and a circulation locking rod. The outer packaging component can be movably mounted on the hook body up and down. A side opening is provided on the outer packaging component corresponding to the hook opening. An elastic structure for resetting the outer packaging component is provided between the top of the outer packaging component and the hook body. One end of the circulation locking rod is movably arranged on the hook body. A circulation groove structure is provided on the outer packaging component. The other end of the circulation locking rod is movably located in the circulation groove structure.

2. The self-locking, anti-dropping and automatic unhooking hook device according to claim 1, characterized in that: The outer package component is a steel sleeve structure with openings at the top and the bottom.

3. The self-locking, anti-dropping and automatic unhooking hook device according to claim 1, characterized in that: The elastic structure is a spring, and the top of the outer package component and the top of the hook body are connected by the spring.

4. The self-locking, anti-dropping and automatic unhooking hook device according to claim 2, characterized in that: The steel sleeve structure is an open cavity structure formed by folding steel plates.

5. The self-locking, anti-dropping and automatic unhooking hook device according to claim 2, characterized in that: The top end of the hook body is connected with a lifting ring via a pin shaft, and the top end of the outer package component is provided with a notch structure for avoiding the end of the pin shaft.

6. The self-locking, anti-dropping and automatic unhooking hook device according to claim 3, characterized in that: The top of the hook body is an arc-shaped structure, and an arc-shaped groove is arranged on the arc-shaped structure. Two ends of the spring are respectively connected to two sides of the top of the outer package component, and the spring is located in the arc-shaped groove.

7. The self-locking, anti-dropping and automatic unhooking hook device according to claim 1, characterized in that: The outer corner of the side opening is an arc-shaped chamfered structure.

8. The self-locking, anti-dropping and automatic unhooking hook device according to claim 1, characterized in that: A connecting hole is arranged at the lower part of the hook body, the lower end of the circulating lock rod is rotatably arranged in the connecting hole, the upper end of the circulating lock rod is a bent lock hook, and the bent lock hook is movably arranged in the circulating groove structure.

9. The self-locking, anti-dropping and automatic unhooking hook device according to claim 8, characterized in that: The circulation groove structure is a heart-shaped groove structure.

10. The self-locking, anti-dropping and automatic-dropping hook device according to claim 8, characterized in that: The circulating locking rod is a Z-shaped rod structure.

Images