Lifting lug for crane

Abstract

The utility model belongs to the technical field of lifting lugs, in particular to a lifting lug for a crane, which comprises a hook and a mounting seat, the end part of the hook is fixedly connected with a connector, the outer wall of the connector is provided with a bearing, the outer wall of the bearing is fixedly connected with the inner wall of the mounting seat, and the top of the mounting seat is provided with a mounting groove. A limiting block is arranged on the inner wall of the mounting groove in a sleeving mode, the bottom of the limiting block is fixedly connected with the connector, a plurality of rotatable balls are embedded in the bottom of the limiting block and make rolling contact with the inner wall of the mounting base, a top cover is fixedly connected to the top of the mounting base, and a through hole is formed in the top of the limiting block; a second bolt is inserted into the inner wall of the through hole, and a threaded groove is formed in the top of the connector. And the balls are embedded in the bottoms of the limiting blocks, the balls are in rolling connection with the interior of the mounting base, the bearing is mounted on the inner wall of the mounting base, and the inner wall of the bearing is connected with the connector, so that abrasion between the structures can be effectively reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting eyes, and more specifically to a lifting eye for a crane. Background Art

[0002] Crane lifting lugs are special parts installed on cranes, usually made of angle steel, steel plates or other materials. They are installed on the main beam or other rails of the crane to lift cargo or other equipment. The lifting lug plays a key role in lifting operations. It requires good load-bearing capacity and stability, not easy to deform, and strong corrosion resistance.

[0003] In the existing technology, such as the document with publication number CN218145352U, a lifting eye for a crane is specifically disclosed. In the device in the document, a rotatable support seat is arranged through the inner wall of the base, a lifting ring is arranged at the bottom of the support seat, and a lifting eye is arranged at the bottom of the lifting ring. However, although the support seat in the device rotates with the base, when a heavier object is hung on the lifting eye, at this time, when the support seat rotates, a large friction force will be generated between the bottom arc surface of the support seat and the inner wall of the base, thereby causing rapid wear between the structures and affecting the service life of the structures. For this reason, we propose a lifting eye for a crane. Utility Model Content

[0004] Based on the technical problem mentioned above that although the support seat in the prior art device rotates with the base, when a heavier object is hung on the lifting eye, a large friction force will be generated between the bottom arc surface of the support seat and the inner wall of the base when the support seat rotates, thereby causing rapid wear between the structures and affecting the service life of the structures, the utility model proposes a lifting eye for a crane.

[0005] The utility model provides a lifting eye for a crane, comprising a hook and a mounting seat, wherein the end of the hook is fixedly connected with a connecting head, a bearing is installed on the outer wall of the connecting head, the outer wall of the bearing is fixedly connected with the inner wall of the mounting seat, a mounting groove is opened on the top of the mounting seat, a limit block is sleeved on the inner wall of the mounting groove, the bottom of the limit block is fixedly connected with the connecting head, a plurality of rotatable balls are embedded in the bottom of the limit block, the plurality of balls are respectively in rolling contact with the inner wall of the mounting seat, and a top cover is fixedly connected with the top of the mounting seat.

[0006] Preferably, a through hole is provided at the top of the limiting block, a second bolt is inserted into the inner wall of the through hole, a thread groove is provided at the top of the connecting head, and the inner wall of the thread groove is threadedly connected to the second bolt.

[0007] Preferably, a threaded hole is provided on the outer wall of the connecting head, a fixing rod is fixedly connected to the bottom of the second bolt, a first bolt is threadedly connected to the inner wall of the threaded hole, and an end of the first bolt is snap-fitted with the inner wall of the fixing rod.

[0008] Preferably, the outer wall of the connector is fixedly connected to a support plate, the inner wall of the support plate is slidably connected to a push rod, the end of the hook is provided with a slot, and the end of the push rod is snap-fitted with the slot.

[0009] Preferably, the outer wall of the hook is fixedly connected to a connecting block, the outer wall of the connecting block is rotatably connected to a connecting sleeve, a sliding hole is provided at the top of the connecting sleeve, the push rod passes through the sliding hole and extends to the bottom thereof, the circumferential outer wall of the push rod is fixedly connected to a limiting sleeve, the limiting sleeve is located above the connecting sleeve, the circumferential outer wall of the push rod is sleeved with a spring, and the top of the push rod is fixedly connected to an end cover.

[0010] Preferably, one end of the spring is fixedly connected to the end cover, and the other end of the spring is fixedly connected to the support plate.

[0011] The beneficial effects of the present invention are:

[0012] 1. By embedding a ball at the bottom of the limit block, the ball is connected to the inside of the mounting seat through rolling, and a bearing is installed on the inner wall of the mounting seat, and the inner wall of the bearing is connected to the connector, the wear between the structures can be effectively reduced and the service life can be extended.

[0013] 2. The second bolt penetrates the limit block to connect with the connector, and the first bolt penetrates the fixing rod to connect with the connector, so that the connector and the limit block can be easily disassembled and replaced.

[0014] 3. By pushing the connecting sleeve upward, the limiting sleeve is squeezed upward by the connecting sleeve. At this time, the push rod slides upward along the inner wall of the support plate to compress the spring. The cargo is hung on the hook and the connecting sleeve is released. Under the elastic force of the spring, the bottom of the push rod is stuck into the groove at the end of the hook, so that the hook can form a closed loop, further improving the safety of the cargo during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the connector of the utility model;

[0018] Figure 4 It is a schematic diagram of the partial split structure of the utility model.

[0019] In the figure: 1. hook; 2. connecting block; 3. connecting sleeve; 4. sliding hole; 5. support plate; 6. push rod; 7. end cover; 8. spring; 9. limit sleeve; 10. slot; 11. connecting head; 12. threaded groove; 13. threaded hole; 14. first bolt; 15. mounting seat; 16. mounting groove; 17. bearing; 18. second bolt; 19. fixing rod; 20. limit block; 21. through hole; 22. ball; 23. top cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a lifting eye for a crane comprises a hook 1 and a mounting seat 15, wherein a connector 11 is fixedly connected to the end of the hook 1, a bearing 17 is installed on the outer wall of the connector 11, the outer wall of the bearing 17 is fixedly connected to the inner wall of the mounting seat 15, a mounting groove 16 is provided at the top of the mounting seat 15, a limit block 20 is sleeved on the inner wall of the mounting groove 16, the bottom of the limit block 20 is fixedly connected to the connector 11, a plurality of rotatable balls 22 are embedded in the bottom of the limit block 20, and the plurality of balls 22 are respectively in rolling contact with the inner wall of the mounting seat 15, a top cover 23 is fixedly connected to the top of the mounting seat 15, the balls 22 are embedded in the bottom of the limit block 20, the balls 22 are in rolling contact with the inside of the mounting seat 15, the bearing 17 is installed on the inner wall of the mounting seat 15, and the inner wall of the bearing 17 is connected to the connector 11, thereby effectively reducing the wear between the structures and extending the service life.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a through hole 21 is provided on the top of the limit block 20, and a second bolt 18 is inserted into the inner wall of the through hole 21. A threaded groove 12 is provided on the top of the connecting head 11, and the inner wall of the threaded groove 12 is threadedly connected to the second bolt 18. A threaded hole 13 is provided on the outer wall of the connecting head 11, and a fixing rod 19 is fixedly connected to the bottom of the second bolt 18. The inner wall of the threaded hole 13 is threadedly connected to the first bolt 14, and the end of the first bolt 14 is snap-fitted with the inner wall of the fixing rod 19. The second bolt 18 penetrates the limit block 20 to connect with the connecting head 11, and the first bolt 14 penetrates the fixing rod 19 to connect with the connecting head 11, so that the connecting head 11 and the limit block 20 can be easily disassembled and replaced.

[0023] like Figure 1 and Figure 2 As shown, the outer wall of the connecting head 11 is fixedly connected to the support plate 5, the inner wall of the support plate 5 is slidably connected to the push rod 6, the end of the hook 1 is provided with a slot 10, the end of the push rod 6 is engaged with the slot 10, the outer wall of the hook 1 is fixedly connected to the connecting block 2, the outer wall of the connecting block 2 is rotatably connected to the connecting sleeve 3, the top of the connecting sleeve 3 is provided with a sliding hole 4, the push rod 6 passes through the sliding hole 4 and extends below it, the circumferential outer wall of the push rod 6 is fixedly connected to the limiting sleeve 9, the limiting sleeve 9 is located above the connecting sleeve 3, the circumferential outer wall of the push rod 6 is provided with a spring 8, and the top of the push rod 6 It is fixedly connected with an end cover 7, one end of a spring 8 is fixedly connected to the end cover 7, and the other end of the spring 8 is fixedly connected to the support plate 5. By pushing the connecting sleeve 3 upwards, the limiting sleeve 9 is squeezed upwards through the connecting sleeve 3. At this time, the push rod 6 slides upwards along the inner wall of the support plate 5 to compress the spring 8 and hang the goods on the hook 1. The connecting sleeve 3 is released, and under the elastic force of the spring 8, the bottom of the push rod 6 is stuck in the slot 10 at the end of the hook 1, so that the hook 1 can form a closed loop, further improving the safety of the goods during the lifting process.

[0024] Working principle: by embedding a ball 22 at the bottom of the limit block 20, the ball 22 is connected to the inside of the mounting seat 15 through rolling, and by installing a bearing 17 on the inner wall of the mounting seat 15, the inner wall of the bearing 17 is connected to the connector 11, thereby effectively reducing the wear between the structures and extending the service life;

[0025] The second bolt 18 penetrates the limit block 20 to connect with the connector 11, and the first bolt 14 penetrates the fixing rod 19 to connect with the connector 11, so that the connector 11 and the limit block 20 can be easily disassembled and replaced;

[0026] By pushing the connecting sleeve 3 upwards, the limiting sleeve 9 is squeezed upwards by the connecting sleeve 3. At this time, the push rod 6 slides upwards along the inner wall of the support plate 5, so that the spring 8 is compressed, and the goods are hung on the hook 1. The connecting sleeve 3 is released, and under the elastic force of the spring 8, the bottom of the push rod 6 is stuck into the groove 10 at the end of the hook 1, so that the hook 1 can form a closed loop, further improving the safety of the goods during the lifting process.

[0027] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting eye for a crane, comprising a hook (1) and a mounting seat (15), characterized in that: The end of the hook (1) is fixedly connected to a connecting head (11), the outer wall of the connecting head (11) is installed with a bearing (17), the outer wall of the bearing (17) is fixedly connected to the inner wall of the mounting seat (15), the top of the mounting seat (15) is provided with a mounting groove (16), the inner wall of the mounting groove (16) is sleeved with a limit block (20), the bottom of the limit block (20) is fixedly connected to the connecting head (11), a plurality of rotatable balls (22) are embedded in the bottom of the limit block (20), the plurality of balls (22) are respectively in rolling contact with the inner wall of the mounting seat (15), and the top of the mounting seat (15) is fixedly connected to a top cover (23).

2. The lifting eye for a crane according to claim 1, characterized in that: A through hole (21) is provided at the top of the limit block (20), a second bolt (18) is inserted into the inner wall of the through hole (21), a thread groove (12) is provided at the top of the connector (11), and the inner wall of the thread groove (12) is threadedly connected to the second bolt (18).

3. The lifting eye for a crane according to claim 2, characterized in that: The outer wall of the connecting head (11) is provided with a threaded hole (13); the bottom of the second bolt (18) is fixedly connected to a fixing rod (19); the inner wall of the threaded hole (13) is threadedly connected to a first bolt (14); and the end of the first bolt (14) is snap-fitted with the inner wall of the fixing rod (19).

4. The lifting eye for a crane according to claim 3, characterized in that: The outer wall of the connecting head (11) is fixedly connected to a support plate (5), the inner wall of the support plate (5) is slidably connected to a push rod (6), the end of the hook (1) is provided with a slot (10), and the end of the push rod (6) is snap-fitted with the slot (10).

5. The lifting eye for a crane according to claim 4, characterized in that: The outer wall of the hook (1) is fixedly connected to a connecting block (2), the outer wall of the connecting block (2) is rotatably connected to a connecting sleeve (3), a sliding hole (4) is provided at the top of the connecting sleeve (3), the push rod (6) passes through the sliding hole (4) and extends to the bottom thereof, the circumferential outer wall of the push rod (6) is fixedly connected to a limiting sleeve (9), the limiting sleeve (9) is located above the connecting sleeve (3), the circumferential outer wall of the push rod (6) is sleeved with a spring (8), and the top of the push rod (6) is fixedly connected to an end cover (7).

6. The lifting eye for a crane according to claim 5, characterized in that: One end of the spring (8) is fixedly connected to the end cover (7), and the other end of the spring (8) is fixedly connected to the support plate (5).

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