Safe locking device for crane hook

Abstract

The utility model provides a safe locking device for a crane hook, which relates to the technical field of cranes and comprises a shell, a sliding column is slidably connected in the shell, a sliding table is fixedly connected on the outer surface of the sliding column, a supporting table is fixedly connected in the shell and is positioned below the sliding table, and the sliding table is fixedly connected with the supporting table. The outer surface of the sliding table is provided with upper teeth, the inner surface of the supporting table is provided with lower teeth, the bottom of the sliding column is fixedly connected with a lifting hook body, the inner top wall of the shell is rotationally connected with an upper sliding sleeve, the inner wall of the upper sliding sleeve is fixedly connected with a spring, and the other end of the spring is fixedly connected with a lower sliding sleeve. And the bottom of the lower sliding sleeve is fixedly connected with the sliding table. Through cooperative use of the sliding table and the supporting table, when the lifting hook body lifts an object, the lifting hook body drives the sliding table to be inserted into the supporting table through the sliding column due to gravity, and therefore the phenomenon that the object rotates in the air and shakes when the lifting hook body lifts the object is avoided.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a crane hook safety locking device. Background Technology

[0002] A crane hook, also known as a crane pulley, is a hook-type pulley block connected to the crane by a wire rope. It is a device consisting of a wire rope passing over several pulleys at a time. The crane hook is a key component of the crane, and its main function is to bear and lift heavy objects. The rationality of its design and manufacturing is directly related to the safe operation of the crane machinery and the safety of personnel and property.

[0003] In practical applications, existing technologies allow cranes to stably lift and transfer objects to suitable locations using their hook structures; however, the following problems still exist:

[0004] When a hook lifts an object, the object is prone to rotation and swaying in the air due to uneven distribution of the object's center of gravity, improper lifting operation, or the influence of external environmental factors (such as wind). This rotation and swaying not only seriously interferes with the accuracy of the lifting operation, prolongs the operation time, and reduces work efficiency, but may also cause the object to fall off, leading to a major safety accident and causing personal injury and property damage.

[0005] Therefore, this utility model provides a crane hook safety locking device. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a crane hook safety locking device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a crane hook safety locking device, comprising a housing, a sliding column slidably connected inside the housing, a sliding platform fixedly connected to the outer surface of the sliding column, a support platform fixedly connected inside the housing, the support platform being located below the sliding platform, an upper tooth being formed on the outer surface of the sliding platform, a lower tooth being formed on the inner surface of the support platform, a hook body being fixedly connected to the bottom of the sliding column, an upper sliding sleeve being rotatably connected to the inner top wall of the housing, a spring being fixedly connected to the inner wall of the upper sliding sleeve, a lower sliding sleeve being fixedly connected to the other end of the spring, and a lower sliding sleeve being fixedly connected to the bottom of the lower sliding sleeve and the sliding platform.

[0008] In a preferred embodiment, a stabilizing plate is fixedly connected to the outer surface of the hook body, a bolt is threaded through the stabilizing plate, and a pressure plate is rotatably connected to the bottom of the bolt.

[0009] The technical effect of adopting the above-mentioned further solution is that when the hoisting rope is hung on the hook body, rotating the bolt causes the pressure plate to press down, thereby fixing the hoisting rope to the hook body.

[0010] In a preferred embodiment, a slide bar is fixedly connected to the outer wall of the upper sliding sleeve, and a slide groove is provided on the inner wall of the lower sliding sleeve. The lower sliding sleeve is slidably connected to the upper sliding sleeve through the slide bar and the slide groove.

[0011] The technical effect of adopting the above-mentioned further solution is that the lower sliding sleeve can slide on the upper sliding sleeve, and when the lower sliding sleeve rotates, the upper sliding sleeve follows the rotation of the lower sliding sleeve through the slide bar and slide groove.

[0012] In a preferred embodiment, the outer surface of the hook body is fixedly fitted with an anti-slip sleeve, the surface of the anti-slip sleeve is provided with anti-slip texture, and the hook body is provided with rounded corners.

[0013] The technical effect of adopting the above-mentioned further solution is that the anti-slip sleeve further enhances the anti-slip treatment of the lifting rope on the hook body, preventing the object from swaying in the air, and the rounded corners make the edge of the hook body less likely to damage the lifting rope.

[0014] In a preferred embodiment, a turntable is rotatably connected to the lower end of the outer shell, and a rotating plate is rotatably connected to the lower end of the turntable. One end of the rotating plate is hinged to a sliding column, and a buckle is fixedly connected to the other end of the rotating plate. A locking block is fixedly connected to one end of the hook body, and the buckle and the locking block are compatible.

[0015] The technical effect of adopting the above-mentioned further solution is that when the hook body lifts an object and drives the sliding column to slide downward, the rotating plate rotates along the connection point with the sliding column, thereby driving the buckle block to rotate to the surface of the locking block and fit against the locking block, ultimately completing the sealing of the lifting rope on the hook body and preventing the lifting rope from slipping in extreme situations.

[0016] This utility model provides a crane hook safety locking device, which has the following advantages:

[0017] 1. By using the sliding table and the support table together, when the hook body lifts an object, gravity will cause the hook body to drive the sliding table into the support table through the sliding column, thereby preventing the object from rotating in the air and swaying when the hook body lifts the object.

[0018] 2. When the hoisting rope is attached to the hook body, turn the bolt to make the bolt drive the pressure plate to press down and fix the hoisting rope, preventing the hoisting rope from sliding on the hook body and causing safety hazards; and when the hook body lifts an object and drives the sliding column to slide down, the rotating plate rotates along the connection point with the sliding column, thereby driving the buckle block to rotate to the surface of the locking block and fit against the locking block, finally completing the locking of the hoisting rope on the hook body, preventing the hoisting rope from slipping in extreme situations. Attached Figure Description

[0019] Figure 1 A structural schematic diagram of a crane hook safety locking device provided by this utility model;

[0020] Figure 2 Exploded view of the slide of a crane hook safety locking device provided by this utility model;

[0021] Figure 3 A schematic diagram of the interior of the housing of a crane hook safety locking device provided by this utility model;

[0022] Figure 4 A schematic diagram of the hook body of a crane hook safety locking device provided by this utility model;

[0023] Figure 5 A schematic diagram of the spring section of a crane hook safety locking device provided by this utility model. (Legendary illustration follows)

[0024] 1. Outer shell; 2. Sliding column; 3. Lower sliding sleeve; 4. Sliding table; 5. Upper tooth; 6. Support platform; 7. Lower tooth; 8. Turntable; 9. Hook body; 10. Rounded corner; 11. Anti-slip sleeve; 12. Stabilizing plate; 13. Bolt; 14. Pressure plate; 15. Turning plate; 16. Fastener block; 17. Locking block; 18. Spring; 19. Upper sliding sleeve; 20. Sliding bar; 21. Sliding groove. Detailed Implementation

[0025] 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.

[0026] like Figure 1 - Figure 5As shown, this embodiment provides a technical solution: a crane hook safety locking device, including a housing 1, a sliding column 2 slidably connected inside the housing 1, the inner circumference of the housing 1 and the outer circumference of the sliding column 2 being equal, a sliding platform 4 fixedly connected to the outer surface of the sliding column 2, and a support platform 6 fixedly connected inside the housing 1, the support platform 6 being located below the sliding platform 4, the outer surface of the sliding platform 4 having upper teeth 5, and the inner surface of the support platform 6 having lower teeth 7, the upper teeth 5 and lower teeth 7 being compatible to facilitate the insertion of the sliding platform 4 into the support platform 6, and a hook body 9 fixedly connected to the bottom of the sliding column 2, when a heavy object is hung on the hook body 9... The slide 4 and the support 6 are engaged by the upper tooth 5 and the lower tooth 7, so that the slide 4 is inserted into the support 6 and fixed by the upper tooth 5 and the lower tooth 7, thereby restricting the rotation of the object by the hook body 9. The upper sliding sleeve 19 is rotatably connected to the inner top wall of the outer shell 1. The inner wall of the upper sliding sleeve 19 is fixedly connected to the spring 18. The other end of the spring 18 is fixedly connected to the lower sliding sleeve 3. When the hook 9 removes the heavy object, the lower sliding sleeve 3 slides upward along the direction of the slide bar 20 under the action of the spring 18, thereby driving the slide 4 away from the support 6 by the slide column 2. The bottom of the lower sliding sleeve 3 is fixedly connected to the slide 4.

[0027] Going further, such as Figure 3 As shown: A stabilizing plate 12 is fixedly connected to the outer surface of the hook body 9. A bolt 13 is threadedly connected to the inner surface of the stabilizing plate 12. The inner side wall of the stabilizing plate 12 and the outer side wall of the bolt 13 are matched. A pressure plate 14 is rotatably connected to the lower end of the bolt 13. When the hook body 9 lifts an object, it will drive the sliding column 2, thereby driving the sliding table 4 to move downward. By rotating the bolt 13 on the stabilizing plate 12, the bolt 13 drives the pressure plate 14 to press down until the lifting rope on the hook body 9 is fixed, thereby preventing the lifting rope from sliding on the hook body 9.

[0028] Going further, such as Figure 5 As shown: The outer wall of the upper sliding sleeve 19 is fixedly connected with a slide bar 20, and four slide bars 20 are provided. The inner wall of the lower sliding sleeve 3 is provided with a slide groove 21. The slide bar 20 and the slide groove 21 are adapted to each other. The lower sliding sleeve 3 is slidably connected to the upper sliding sleeve 19 through the slide bar 20 and the slide groove 21. The lower sliding sleeve 3 can slide on the upper sliding sleeve 19. When the lower sliding sleeve 3 rotates, the upper sliding sleeve 19 rotates with the lower sliding sleeve 3 through the slide bar 20 and the slide groove 21.

[0029] Going further, such as Figure 3 As shown: The outer surface of the hook body 9 is fixedly fitted with an anti-slip sleeve 11. The anti-slip sleeve 11 is made of rubber and has anti-slip texture on its surface. The edges of the hook body 9 are rounded with corners 10. The anti-slip sleeve 11 further enhances the anti-slip treatment of the lifting rope on the hook body 9, preventing the object from swaying in the air. The rounded corners 10 make it less likely for the edges of the hook body 9 to damage the lifting rope.

[0030] The above solutions also have the problem that, in extreme cases, the object may easily detach from the hook body 9 when it is swaying in the air. Figure 4 As shown, a turntable 8 is rotatably connected to the lower end of the outer shell 1, and a rotating plate 15 is rotatably connected to the lower end of the turntable 8. One end of the rotating plate 15 is hinged to the sliding column 2, and the other end of the rotating plate 15 is fixedly connected to a buckle block 16. One end of the hook body 9 is fixedly connected to a locking block 17. The buckle block 16 and the locking block 17 are compatible. When the hook body 9 lifts an object and drives the sliding column 2 to slide downward, the rotating plate 15 rotates along the connection point with the sliding column 2, thereby driving the buckle block 16 to rotate to the surface of the locking block 17 and fit against the locking block 17, thus completing the sealing of the lifting rope on the hook body 9 and preventing the lifting rope from slipping in extreme situations.

[0031] Working principle:

[0032] As shown in Figure 1-5:

[0033] In use: First, rotate the hook body 9 to a suitable angle and hang the sling on the object onto the hook body 9. Rotate the bolt 13 on the stabilizing plate 12. The bolt 13 drives the pressure plate 14 to press down on the hook body 9 until the sling is fixed to the hook body 9. With the help of the anti-slip sleeve 11, the sling is prevented from slipping when the hook body 9 lifts the object. When the hook body 9 lifts the object, the hook body 9 drives the sliding column 2 to slide on the outer shell 1, so that the slide 4 is inserted into the inside of the support 6. The slide 4 is fixed by the meshing of the upper tooth 5 and the lower tooth 7, preventing the hook body 9 from rotating when the object is in the air. At the same time, when the hook body 9 drives the outer shell 1 to slide down, the rotating plate 15 rotates along the connection point with the sliding column 2, so that the buckle block 16 rotates to the surface of the locking block 17 and fits against the locking block 17. Finally, the sling on the hook body 9 is locked, preventing the object from shaking and causing the sling to slip, thus avoiding safety hazards.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crane hook safety locking device, comprising a housing (1), characterized in that, The shell (1) is slidably connected to a sliding column (2), and a sliding table (4) is fixedly connected to the outer surface of the sliding column (2). The shell (1) is fixedly connected to a support (6), which is located below the sliding table (4). The outer surface of the sliding table (4) is provided with upper teeth (5), and the inner surface of the support (6) is provided with lower teeth (7). The upper teeth (5) and lower teeth (7) are compatible with each other. The bottom of the sliding column (2) is fixedly connected to a hook body (9). The inner top wall of the shell (1) is rotatably connected to an upper sliding sleeve (19). The inner wall of the upper sliding sleeve (19) is fixedly connected to a spring (18). The other end of the spring (18) is fixedly connected to a lower sliding sleeve (3). The bottom of the lower sliding sleeve (3) is fixedly connected to the sliding table (4).

2. The crane hook safety locking device according to claim 1, characterized in that: A stabilizing plate (12) is fixedly connected to the outer surface of the hook body (9). A bolt (13) is threaded through the stabilizing plate (12), and a pressure plate (14) is rotatably connected to the bottom of the bolt (13).

3. The crane hook safety locking device according to claim 1, characterized in that: The outer wall of the upper sliding sleeve (19) is fixedly connected with a slide bar (20), and the inner wall of the lower sliding sleeve (3) is provided with a slide groove (21). The lower sliding sleeve (3) is slidably connected to the upper sliding sleeve (19) through the slide bar (20) and the slide groove (21).

4. The crane hook safety locking device according to claim 2, characterized in that: The outer surface of the hook body (9) is fixedly fitted with an anti-slip sleeve (11), the surface of the anti-slip sleeve (11) is provided with anti-slip texture, and the hook body (9) is provided with rounded corners (10).

5. The crane hook safety locking device according to claim 1, characterized in that: The lower end of the outer shell (1) is rotatably connected to a turntable (8), and the lower end of the turntable (8) is rotatably connected to a rotating plate (15). One end of the rotating plate (15) is hinged to a sliding column (2).

6. The crane hook safety locking device according to claim 5, characterized in that: The other end of the rotating plate (15) is fixedly connected to a buckle block (16), and one end of the hook body (9) is fixedly connected to a locking block (17). The buckle block (16) and the locking block (17) are compatible.

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