Self-locking lifting hook

Abstract

The utility model discloses a self-locking type lifting hook, which relates to the technical field of lifting hooks and comprises a lifting hook main body, a connecting piece is mounted above the lifting hook main body, an arc-shaped sliding groove is formed in the inner side surface of the lifting hook main body, a locking block is slidably connected to the surface of the arc-shaped sliding groove, and driven teeth are fixedly connected to the outer surface of the locking block. The side face of the lifting hook body is provided with a through groove communicating with the arc-shaped sliding groove, the output end of the servo motor is fixedly connected with a driving gear, the surface of the driving gear is in meshing transmission with driven teeth, the surface of the mounting groove is slidably connected with a trigger block, a contact is mounted on the inner bottom face of the mounting groove, and a contact is mounted on the lower surface of the trigger block. According to the lifting hook, the locking block, the driven gear, the mounting box, the servo motor, the trigger block, the contact, the contact and the controller are arranged, the locking block is controlled to rotate upwards, the problem that a thick steel wire hanging rope is clamped is avoided, and the purpose of improving the convenience and safety of the lifting hook is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting hooks, in particular to a self-locking lifting hook. Background Art

[0002] Lifting hook is the most common type of lifting device in lifting machinery. The hook is often suspended on the wire rope of the lifting mechanism with the help of pulleys and other components; the existing hooks on the market are divided into single hooks and double hooks. For safety and convenience, the hooks are usually equipped with spring locks to block the hook opening through the spring. When lifting large objects, the ground operator only needs to lock the hook opening with the spring lock and keep away from the large objects for the crane to lift, because the locking of the spring lock will greatly reduce the situation of hook unhooking, increase the working efficiency of the crane, and increase the safety of the crane.

[0003] A self-locking lifting hook disclosed in the Chinese utility model patent application disclosure CN218809887U realizes unlocking and locking by utilizing the weight of the hoisted object itself, without human intervention, stable locking, preventing the object from being unhooked, and high safety performance. However, when the wire rope hung on the hook is thicker, the lock plate is easily blocked by the wire rope during the swinging process around the rotating axis, which causes the wire rope to be pressed tightly in the hook by the lock plate, causing the wire rope to be stuck in the hook. At this time, the staff needs to manually press the lock plate to remove the wire rope, which leads to the disadvantage that the wire rope is easily stuck in the hook. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a self-locking lifting hook, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a self-locking lifting hook, including a hook body, a connecting piece is installed on the top of the hook body, an arc-shaped slide groove is provided on the inner side surface of the hook body, a locking block is slidably connected to the surface of the arc-shaped slide groove, and a driven tooth is fixedly connected to the outer surface of the locking block, a through groove communicating with the arc-shaped slide groove is provided on the side surface of the hook body, a mounting box is fixedly installed at the through groove, a servo motor is installed inside the mounting box, a driving gear is fixedly connected to the output end of the servo motor, and a driven tooth is meshed and transmitted on the surface of the driving gear, an mounting groove is provided on the inner side surface of the hook body, a trigger block is slidably connected to the surface of the mounting groove, a contact is installed on the inner bottom surface of the mounting groove, a contact is installed on the lower surface of the trigger block, and a controller is installed on the side of the mounting box.

[0008] Optionally, limiting grooves are provided on both sides of the arc-shaped slide groove, and limiting sliders are fixedly connected to both sides of the locking block, and the limiting sliders slide in the limiting grooves.

[0009] Optionally, a slot is provided on the inner side surface of the upper portion of the hook body, and the size and position of the right end of the locking block are adapted to the slot.

[0010] Optionally, a spring is fixedly connected to the inner bottom surface of the mounting groove, and a trigger block is fixedly connected to the other end of the spring. There are four springs in number and they are symmetrically distributed in pairs.

[0011] Optionally, the controller is electrically connected to the servo motor via a wire, the positions of the contacts and the contact heads are opposite to each other, and the contacts and the contact heads are arranged on a control circuit of the controller.

[0012] (III) Beneficial effects

[0013] The utility model provides a self-locking lifting hook, which has the following beneficial effects:

[0014] 1. A self-locking lifting hook has a self-locking effect through the arrangement of a locking block, a driven tooth, a mounting box, a servo motor, a trigger block, a contact, a contact head and a controller. When in use, the wire rope is hung on the hook body, and the wire rope contacts the trigger block. As the lifting proceeds, under the action of gravity, the wire rope applies a downward force to the trigger block, causing the trigger block to slide downward in the mounting groove, thereby overcoming the elastic force of the spring, causing the contact head and the contact head to contact. Since the contact head and the contact head are arranged on a circuit of a controller controlling a servo motor, the servo motor is controlled by the controller to start working, and the servo motor drives the driving gear to rotate forward, and the driving gear drives the driven tooth, thereby causing the locking block to slide in the arc-shaped slide groove. When sliding, the locking block The side limit slider slides in the limit groove, which plays a limiting role and makes the locking block slide outward. The other end of the locking block is inserted into the slot. At this time, the servo motor stops working, thereby completing the self-locking work. In the face of a thicker wire rope, it can provide more sufficient space. After the lifting is completed, the cargo contacts the bottom surface. At this time, the force applied to the trigger block is small. Under the action of the spring, the trigger block bounces upward. At this time, the contact and the contact are separated. After the controller receives the signal, it controls the output end of the servo motor to reverse, so that the locking block returns to the arc-shaped slide groove, completes automatic unlocking, and controls the locking block to rotate upward at the same time, avoiding the problem of thicker wire rope being stuck, thereby achieving the purpose of improving the convenience and safety of the hook. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0017] Figure 3 For this utility model Figure 2 The structural diagram at A in the middle;

[0018] Figure 4 For this utility model Figure 2 The structural diagram at B in the middle;

[0019] Figure 5 It is a structural schematic diagram of a side cross-section of the locking block of the utility model.

[0020] In the figure: 1. hook body; 2. connecting part; 3. arc-shaped slide groove; 4. limit groove; 5. limit slider; 6. locking block; 7. driven gear; 8. mounting box; 9. servo motor; 10. driving gear; 11. through groove; 12. mounting groove; 13. spring; 14. trigger block; 15. contact; 16. contact; 17. controller; 18. slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] See also Figures 1 to 5The utility model provides a technical solution: a self-locking lifting hook, comprising a hook body 1, a connecting piece 2 is installed above the hook body 1, an arc-shaped slide groove 3 is provided on the inner side of the hook body 1, a locking block 6 is slidably connected to the surface of the arc-shaped slide groove 3, and a driven tooth 7 is fixedly connected to the outer surface of the locking block 6, a through groove 11 communicating with the arc-shaped slide groove 3 is provided on the side of the hook body 1, a mounting box 8 is fixedly installed at the through groove 11, a servo motor 9 is installed inside the mounting box 8, a driving gear 10 is fixedly connected to the output end of the servo motor 9, and the surface of the driving gear 10 is meshed and driven with the driven tooth 7, a mounting groove 12 is provided on the inner side of the hook body 1, a trigger block 14 is slidably connected to the surface of the mounting groove 12, and a trigger block 14 is installed on the inner bottom surface of the mounting groove 12 Point 15, a contact 16 is installed on the lower surface of the trigger block 14, a controller 17 is installed on the side of the mounting box 8, limit grooves 4 are provided on both sides of the arc-shaped slide groove 3, and limit sliders 5 are fixedly connected on both sides of the lock block 6. The limit slider 5 slides in the limit groove 4, and a card slot 18 is provided on the inner side surface of the upper part of the hook body 1. The size and position of the right end of the lock block 6 are adapted to the card slot 18. A spring 13 is fixedly connected to the inner bottom surface of the mounting groove 12, and the other end of the spring 13 is fixedly connected to the trigger block 14. There are four springs 13, which are symmetrically distributed in pairs. The controller 17 is electrically connected to the servo motor 9 through a wire, and the positions of the contacts 15 and the contacts 16 are compared with each other up and down, and the contacts 15 and the contacts 16 are arranged on the control circuit of the controller 17.

[0024] In order to achieve the purpose of improving the convenience and safety of the hook, when in use, the wire rope is hung on the hook body 1, and the wire rope contacts the trigger block 14. As the lifting proceeds, under the action of gravity, the wire rope applies a downward force to the trigger block 14, causing the trigger block 14 to slide downward in the installation groove 12, thereby overcoming the elastic force of the spring 13, so that the contact 16 and the contact 15 are in contact. Since the contact 16 and the contact 15 are arranged on the circuit of the controller 17 controlling the servo motor 9, the servo motor 9 is controlled by the controller 17 to start working, and the servo motor 9 drives the active gear 10 to rotate forward, and the active gear 10 drives the driven gear 7, thereby causing the lock block 6 to slide in the arc-shaped slide groove 3. When sliding, the limit slider 5 on the side of the lock block 6 slides in the limit groove 4. It plays a limiting role, causing the locking block 6 to slide outward, and the other end of the locking block 6 is inserted into the card slot 18. At this time, the servo motor 9 stops working, thereby completing the self-locking work, and when facing a thicker wire hanging rope, it can provide more sufficient space. After the lifting is completed, the goods are in contact with the bottom surface. At this time, the force applied to the trigger block 14 is small. Under the action of the spring 13, the trigger block 14 is bounced up. At this time, the contact 15 and the contact 16 are separated. After the controller 17 receives the signal, the controller 17 controls the output end of the servo motor 9 to reverse, so that the locking block 6 returns to the arc-shaped slide groove 3 again, completes automatic unlocking, and controls the locking block 6 to rotate upward at the same time, avoiding the problem of the thicker wire hanging rope being stuck, thereby achieving the purpose of improving the convenience and safety of the hook.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-locking lifting hook, comprising a hook body (1), characterized in that: A connecting piece (2) is installed above the hook body (1); an arc-shaped slide groove (3) is provided on the inner side surface of the hook body (1); a locking block (6) is slidably connected to the surface of the arc-shaped slide groove (3); a driven tooth (7) is fixedly connected to the outer surface of the locking block (6); a through groove (11) communicating with the arc-shaped slide groove (3) is provided on the side surface of the hook body (1); a mounting box (8) is fixedly installed at the through groove (11); a servo motor (9) is installed inside the mounting box (8) The output end of the servo motor (9) is fixedly connected to a driving gear (10), the surface of the driving gear (10) is meshed with a driven gear (7), the inner side surface of the hook body (1) is provided with a mounting groove (12), the surface of the mounting groove (12) is slidably connected to a trigger block (14), the inner bottom surface of the mounting groove (12) is provided with a contact (15), the lower surface of the trigger block (14) is provided with a contact (16), and the side surface of the mounting box (8) is provided with a controller (17).

2. A self-locking lifting hook according to claim 1, characterized in that: Limiting grooves (4) are provided on two side surfaces of the arc-shaped sliding groove (3), and limiting sliding blocks (5) are fixedly connected to two side surfaces of the locking block (6), and the limiting sliding blocks (5) slide in the limiting grooves (4).

3. A self-locking lifting hook according to claim 1, characterized in that: A slot (18) is provided on the inner side surface of the upper portion of the hook body (1), and the size and position of the right end of the locking block (6) are adapted to the slot (18).

4. A self-locking lifting hook according to claim 1, characterized in that: A spring (13) is fixedly connected to the inner bottom surface of the installation groove (12), and a trigger block (14) is fixedly connected to the other end of the spring (13), and the number of springs (13) is four and they are symmetrically distributed in pairs.

5. A self-locking lifting hook according to claim 1, characterized in that: The controller (17) is electrically connected to the servo motor (9) via a wire, the positions of the contact (15) and the contact head (16) are vertically opposed, and the contact (15) and the contact head (16) are arranged on a control circuit of the controller (17).

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