Multi-magnification crane hook structure

Abstract

The utility model relates to the technical field of crane hooks, in particular to a multi-magnification crane hook structure, which comprises a movable sliding connecting block and a bidirectional hook, the lower surface of the movable sliding connecting block is connected with the bidirectional hook, the vertical surface of the bidirectional hook is provided with an L-shaped mounting plate, a rotating rod is arranged on the L-shaped mounting plate in a penetrating manner, and the rotating rod is connected with the movable sliding connecting block. A rectangular plate is further arranged on the rotating rod, a rectangular groove is further formed in the rectangular plate, a rectangular storage sleeve is fixedly connected to the position, close to the vertical plane of the L-shaped mounting plate, of the rectangular groove, a rectangular extension rod is slidably connected to the rectangular storage sleeve, and a rectangular mounting plate is further arranged on the bottom surface of the interior of the rectangular groove. When the bidirectional lifting hook is used, the annular sleeve composed of the U-shaped storage sleeve and the U-shaped extension rod can be sleeved outside the bidirectional lifting hook, so that a blocked space is reserved, a lifting appliance can normally and smoothly enter an inner ring of the lifting hook, and the bidirectional lifting hook can adapt to lifting appliances and chains with different sizes.

Description

Technical Field

[0001] This utility model relates to the field of crane hook technology, and in particular to a multi-ratio crane hook structure. Background Technology

[0002] With the continuous development of industry and the gradual expansion of production scale, higher requirements are placed on the lifting capacity and working efficiency of cranes. In the installation and handling of some large-scale projects and heavy equipment, cranes are needed to lift heavier goods and improve work efficiency. The continuous improvement of modern mechanical design and manufacturing technology has made the design of multi-ratio hooks more reasonable and the manufacturing precision higher. By optimizing the structure and mechanical properties of hooks, the load-bearing capacity and stability of hooks can be improved.

[0003] Before lifting, select the appropriate hook ratio based on the weight of the goods to be lifted. Then, based on the shape, weight, and lifting requirements of the goods, select suitable slings, such as wire ropes, chains, or slings. Connect one end of the sling to the crane hook and the other end to the lifting point of the goods. Ensure the connection is secure and reliable to avoid loosening or slippage. After confirming a secure connection, the lifting process can begin.

[0004] Most existing bidirectional hooks are equipped with structures to prevent cargo from falling off, such as the crane hook described in application number CN202223475823.9. The anti-fall-off structure is the same in these hooks. However, when the cargo is heavy or large, the number and size of the lifting gear or chain required will also be larger. In this case, the large volume of the chain or lifting gear cannot be stuffed into the hook and will be blocked by the anti-fall-off structure, thus making it impossible to lift the cargo. Utility Model Content

[0005] In view of the above-mentioned situations where the cargo is heavy or large, the number and size of the lifting gear or chain required will also be large, and the large volume of the chain or lifting gear cannot be stuffed into the hook, this utility model is proposed.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a multi-ratio crane hook structure, comprising: a sliding connecting block and a bidirectional hook, wherein the bidirectional hook is connected to the lower surface of the sliding connecting block, and an L-shaped mounting plate is provided on the vertical surface of the bidirectional hook, a rotating rod is provided through the L-shaped mounting plate, and a rectangular plate is provided on the rotating rod, and a rectangular groove is provided on the rectangular plate, a rectangular storage sleeve is fixedly connected to the rectangular groove near the vertical surface of the L-shaped mounting plate, a rectangular extension rod is slidably connected to the rectangular storage sleeve, and a rectangular mounting plate is provided on the bottom surface inside the rectangular groove.

[0007] As a preferred embodiment of the multi-ratio crane hook structure of this utility model, a rectangular connecting plate is also provided on the vertical surface of the rectangular extension rod, the rectangular extension rod passes through the rectangular plate, and a U-shaped storage sleeve is fixedly connected to the vertical surface of the rectangular extension rod away from the rectangular mounting plate.

[0008] As a preferred embodiment of the multi-ratio crane hook structure of this utility model, a U-shaped extension rod is slidably connected to the U-shaped storage sleeve, and memory springs are provided on the vertical surfaces of the rectangular mounting plate near the rectangular connecting plate. One end of the memory spring is connected to the rectangular mounting plate, and the other end of the memory spring is fixedly connected to the rectangular connecting plate.

[0009] As a preferred embodiment of the multi-ratio crane hook structure of this utility model, a circular guide rod is provided through the vertical surface of the rectangular connecting plate, and the end of the circular guide rod near the memory spring also passes through the rectangular mounting plate.

[0010] As a preferred embodiment of the multi-ratio crane hook structure of this utility model, a rectangular moving groove is provided through the intersection of the rectangular mounting plate and the rectangular plate, and a T-shaped moving block is also provided inside the rectangular moving groove. The T-shaped moving block is fixedly connected to the rectangular mounting plate, and a U-shaped limiting block is also provided on the vertical surface of the outer side of the rectangular plate.

[0011] As a preferred embodiment of the multi-rate crane hook structure of this utility model, a cylindrical tube is provided through the exit of the T-shaped moving block, and an arc-shaped limiting block is fixedly connected to the cylindrical tube away from the circular surface of the T-shaped moving block.

[0012] As a preferred embodiment of the hook structure of a multi-rate crane according to this utility model, a rotating round rod is provided through the short exit of the T-shaped moving block, and a torsion bar is also provided on the round surface of the rotating round rod away from the T-shaped moving block.

[0013] As a preferred embodiment of the hook structure of a multi-rate crane according to this utility model, an arc-shaped limiting groove is provided at the exit of the T-shaped moving block, and a pair of meshing bevel gears are provided through the arc surfaces of the rotating rod and the cylindrical tube.

[0014] The beneficial effects of this utility model are:

[0015] 1. When encountering large cargo, this equipment can place a ring-shaped sleeve consisting of a U-shaped storage sleeve and a U-shaped extension rod over the outside of the bidirectional hook, thereby clearing the obstructed space and allowing the lifting device to enter the inner ring of the hook normally and smoothly. This allows the bidirectional hook to adapt to lifting devices and chains of different sizes.

[0016] 2. When the ring sleeve composed of the U-shaped storage sleeve and the U-shaped extension rod is removed, the device is equipped with a structure to assist in unloading the ring sleeve, making unloading smoother and more convenient, and saving the time wasted on restoring the ring sleeve. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the rectangular groove in this utility model.

[0020] Figure 3 This is a schematic diagram of the connection structure at the T-shaped movable block of this utility model.

[0021] Figure 4 This is a schematic diagram of the rectangular storage sleeve structure of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Sliding connecting block; 2. Bidirectional hook; 3. L-shaped mounting plate; 4. Rectangular plate; 5. Rectangular groove; 6. Rectangular storage sleeve; 7. Rectangular extension rod; 8. Rectangular mounting plate; 9. Rectangular connecting plate; 10. U-shaped storage sleeve; 11. U-shaped extension rod; 12. Memory spring; 13. Circular guide rod; 14. T-shaped moving block; 15. U-shaped limiting block; 16. Cylindrical tube; 17. Arc-shaped limiting block; 18. Rotating round rod; 19. Arc-shaped limiting groove; 20. Bevel gear. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example

[0024] Reference Figure 1 , 24. This is the first embodiment of the present utility model, which provides a multi-ratio crane hook structure, including: a sliding connecting block 1 and a bidirectional hook 2. The lower surface of the sliding connecting block 1 is connected to the bidirectional hook 2. The vertical surface of the bidirectional hook 2 is provided with an L-shaped mounting plate 3. A rotating rod is provided through the L-shaped mounting plate 3, and a rectangular plate 4 is also provided on the rotating rod. A rectangular groove 5 is also provided on the rectangular plate 4. A rectangular storage sleeve 6 is fixedly connected to the rectangular groove 5 near the vertical surface of the L-shaped mounting plate 3. A rectangular extension rod 7 is slidably connected to the rectangular storage sleeve 6. A rectangular mounting plate 8 is also provided on the bottom surface inside the rectangular groove 5.

[0025] A rectangular connecting plate 9 is also provided on the vertical surface of the rectangular extension rod 7. The rectangular extension rod 7 passes through the rectangular plate 4. A U-shaped storage sleeve 10 is fixedly connected to the vertical surface of the rectangular extension rod 7 away from the rectangular mounting plate 8. A U-shaped extension rod 11 is slidably connected to the U-shaped storage sleeve 10. Memory springs 12 are provided on the vertical surface of the rectangular mounting plate 8 near the rectangular connecting plate 9. One end of the memory spring 12 is connected to the rectangular mounting plate 8, and the other end of the memory spring 12 is fixedly connected to the rectangular connecting plate 9.

[0026] A circular guide rod 13 is provided through the vertical surface of the rectangular connecting plate 9, and the end of the circular guide rod 13 near the memory spring 12 also passes through the rectangular mounting plate 8. A rectangular moving groove is provided through the intersection of the rectangular mounting plate 8 and the rectangular plate 4, and a T-shaped moving block 14 is provided inside the rectangular moving groove. The T-shaped moving block 14 is fixedly connected to the rectangular mounting plate 8. A U-shaped limiting block 15 is also provided on the vertical surface of the outer side of the rectangular plate 4.

[0027] When using the hook, first select the appropriate hook ratio based on the weight of the goods to be lifted. Then, select the appropriate slings, such as wire ropes, chains, or slings, based on the shape, weight, and lifting requirements of the goods. If the sling is too large, have a worker manually lift the rectangular plate 4 and place the sling into the inner ring of the hook. Then, manually pull the U-shaped extension rod 11. Because the U-shaped extension rod 11 and the U-shaped storage sleeve 10 are in a sliding relationship, the U-shaped extension rod 11 will extend when pulled. Continue pulling the U-shaped extension rod 11, and the U-shaped storage sleeve 10 will then extend. The U-shaped extension rod 11 has reached its end and cannot extend any further. Therefore, when the U-shaped extension rod 11 is pulled, a pair of rectangular extension rods 7 will be pulled. Because a rectangular connecting plate 9 is provided on the vertical surface of the rectangular extension rod 7, and the other end of the memory spring 12 is fixedly connected to the rectangular connecting plate 9, as the rectangular connecting plate 9 moves continuously, the pulling force provided by the memory spring 12 will increase. Finally, the ring sleeve composed of the U-shaped storage sleeve 10 and the U-shaped extension rod 11 can be manually placed on the notch provided on the double-sided hook 2. After confirming that it is secure, the crane can be started to carry out the lifting process. Example

[0028] Reference Figure 2 and 3 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a cylindrical tube 16 is provided through the exit of the T-shaped moving block 14, and an arc-shaped limiting block 17 is fixedly connected to the circular surface of the cylindrical tube 16 away from the T-shaped moving block 14.

[0029] A rotating rod 18 is provided through the short exit of the T-shaped moving block 14. A torsion bar is also provided on the circular surface of the rotating rod 18 away from the T-shaped moving block 14. An arc-shaped limiting groove 19 is also provided at the exit of the T-shaped moving block 14. A pair of meshing bevel gears 20 are provided through the arc surfaces of the rotating rod 18 and the cylindrical tube 16.

[0030] In use, first follow the operating steps in Example 1. After placing the goods in the corresponding position, first twist the rotating rod 18. Because the rotating rod 18 is equipped with a torsion bar, and both the rotating rod 18 and the cylindrical tube 16 are equipped with intermeshing bevel gears 20 that are penetrated through each other, the cylindrical tube 16 will also rotate as the torsion bar is rotated. As the cylindrical tube 16 rotates continuously, the angle of the arc-shaped limiting block 17 will change. Because the memory spring 12 is still in a pulled state, after the torsion bar rotates 90 degrees, the rectangular mounting plate 8 will move under the pull of the memory spring 12. After the rectangular mounting plate 8 moves, the U-shaped extension rod 11 can be easily removed from the bidirectional hook 2 by hand, and finally the sling on the goods can be removed.

[0031] The remaining structure is the same as that in Example 1.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A multi-ratio crane hook structure comprising: The utility model relates to a dynamic sliding connecting block (1) and a two-way lifting hook (2), the lower surface of the dynamic sliding connecting block (1) is connected with the two-way lifting hook (2), characterized by: the vertical surface of the two-way lifting hook (2) is provided with an L-shaped mounting plate (3), a rotating rod is arranged through the L-shaped mounting plate (3), a rectangular plate (4) is further arranged on the rotating rod, a rectangular recess (5) is further formed in the rectangular plate (4), the rectangular recess (5) is fixedly connected with a rectangular receiving sleeve (6) close to the vertical surface of the L-shaped mounting plate (3), a rectangular extension rod (7) is slidably connected to the rectangular receiving sleeve (6), and a rectangular mounting plate (8) is further arranged on the bottom surface in the rectangular recess (5).

2. A multi-fold crane hook structure according to claim 1, characterized in that: A rectangular connecting plate (9) is further arranged on the vertical surface of the rectangular extension rod (7), the rectangular extension rod (7) penetrates the rectangular plate (4), and a U-shaped receiving sleeve (10) is fixedly connected to the vertical surface of the rectangular extension rod (7) away from the rectangular mounting plate (8).

3. A multi-fold crane hook structure according to claim 2, characterized in that A U-shaped extension rod (11) is slidably connected to the U-shaped receiving sleeve (10), memory springs (12) are arranged on the vertical surface of the rectangular mounting plate (8) close to the rectangular connecting plate (9), one end of each memory spring (12) is connected to the rectangular mounting plate (8), and the other end of each memory spring (12) is fixedly connected to the rectangular connecting plate (9).

4. A multi-fold crane hook structure according to claim 3, characterized in that: A circular guide rod (13) is arranged through the vertical surface of the rectangular connecting plate (9), and one end of the circular guide rod (13) close to the memory spring (12) further penetrates the rectangular mounting plate (8).

5. A multi-fold crane hook structure according to claim 1, characterized in that: A rectangular moving groove is formed through the intersection of the rectangular mounting plate (8) and the rectangular plate (4), a T-shaped moving block (14) is further arranged in the rectangular moving groove, the T-shaped moving block (14) is fixedly connected with the rectangular mounting plate (8), and a U-shaped limiting block (15) is further arranged on the vertical surface outside the rectangular plate (4).

6. A multi-fold crane hook structure according to claim 5, characterized in that: A cylindrical barrel (16) is arranged through the exit of the T-shaped moving block (14), and an arc-shaped limiting block (17) is fixedly connected to the circular surface of the cylindrical barrel (16) away from the T-shaped moving block (14).

7. A multi-fold crane hook structure according to claim 6, characterized in that: A rotating circular rod (18) is arranged through the short vertical surface of the T-shaped moving block (14), and a torsion rod is further arranged on the circular surface of the rotating circular rod (18) away from the T-shaped moving block (14).

8. A multi-fold crane hook structure according to claim 7, characterized in that: An arc-shaped limiting groove (19) is formed in the vertical surface of the T-shaped moving block (14), and a pair of intermeshing bevel gears (20) are arranged through the arc surfaces of the rotating circular rod (18) and the cylindrical barrel (16).

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