A crane hook anti-derailment mechanism

Abstract

This utility model relates to the field of hook anti-detachment mechanisms and discloses a hook anti-detachment mechanism for cranes, including an H-shaped block. A rectangular hinge block is hinged to the inner bottom of the H-shaped block. A connecting rod is rotatably mounted on the bottom of the rectangular hinge block. An arc-shaped groove is provided inside the connecting rod, and an arc-shaped block is movably installed inside the arc-shaped groove. A locking component is provided on the connecting rod to fix the arc-shaped block, significantly improving adjustment flexibility: by setting a rotating block, T-shaped groove, and T-shaped block rotational connection structure, the connecting rod can achieve free rotation and lateral adjustment. Compared with the traditional rigid fixed connection method, this design can flexibly adapt to multi-angle changes of materials during hoisting, effectively disperse off-center load stress, and avoid deformation or failure of the anti-detachment components due to long-term uneven stress, greatly improving the applicability and service life of the mechanism.

Description

Technical Field

[0001] This utility model relates to the field of hook anti-detachment mechanisms, specifically a hook anti-detachment mechanism for cranes. Background Technology

[0002] In industrial production and material handling, overhead cranes are widely used as important lifting equipment, and the safety of their hooks is directly related to the safety of operators and equipment. The hook anti-detachment mechanism is a key component that prevents materials from falling out of the hook opening during lifting, and its reliability and applicability have always been a focus of industry attention. In existing technologies, hook anti-derailment mechanisms typically employ structures such as spring baffles and pin locks, using mechanical linkage to seal the hook opening. However, these traditional mechanisms have the following shortcomings: Insufficient adjustment flexibility: The connection between the connecting rod and the hook body is mostly rigid and fixed, which makes it difficult to adapt to the angle changes of the material during the hoisting process. This makes the anti-detachment components susceptible to eccentric stress, and may cause structural deformation or failure after long-term use. Insufficient locking stability: The locking components of some anti-derailment mechanisms rely on a single spring or pin structure, which are prone to loosening under high-frequency vibration or impact loads, posing a risk of hook disengagement; and the sliding guide structure of the arc-shaped sealing component is not precise enough, which may lead to incomplete sealing. To address this, we propose an anti-derailment mechanism for crane hooks. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a crane hook anti-detachment mechanism, which solves the aforementioned problems.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a crane hook anti-detachment mechanism, comprising an H-shaped block, a rectangular hinge block hinged to the inner bottom of the H-shaped block, a connecting rod rotatably disposed at the bottom of the rectangular hinge block, an arc-shaped groove disposed inside the connecting rod, an arc-shaped block movably mounted inside the arc-shaped groove, and a locking component disposed on the connecting rod for fixing the arc-shaped block.

[0005] Preferably, a notch is provided on one side of the connecting rod, and one end of the arc-shaped block can extend from the arc-shaped groove opening in the notch below the connecting rod and be inserted into the arc-shaped groove opening in the notch above the connecting rod.

[0006] Preferably, a side groove is formed at the lower end of the connecting rod corresponding to the position of the arc-shaped block, and a limiting block is integrally formed on the arc-shaped block corresponding to the position of the side groove, and the limiting block is slidably engaged with the side groove.

[0007] Preferably, the end of the arc-shaped block is provided with a plug-in groove, and the locking component is engaged with the plug-in groove.

[0008] Preferably, the locking assembly includes a circular tube, a plug rod, and a spring. The connecting rod has a circular hole, and a circular tube is fixedly installed on the outer side of the connecting rod at a position corresponding to the circular hole. The circular tube communicates with the circular hole, and a plug rod is inserted into the circular tube. One end of the plug rod located inside the circular tube has an annular protrusion integrally formed. A spring is fixedly installed on the inner wall of the circular tube on the side away from the circular hole. The spring is sleeved on the outer side of the plug rod, and one end of the spring is fixedly connected to the annular protrusion.

[0009] Preferably, a rotating block is fixedly installed at the bottom of the rectangular hinge block, a T-shaped groove is provided inside the rotating block, a T-shaped block is rotatably installed inside the T-shaped groove, a connecting block is fixedly installed at the end of the T-shaped block, and a connecting rod is fixedly installed at the end of the connecting block.

[0010] Compared with the prior art, this utility model provides a hook anti-derailment mechanism for cranes, which has the following beneficial effects: Significantly enhanced adjustment flexibility: By incorporating a rotating block, T-slot, and T-block rotational connection structure, the connecting rod can achieve free rotation and lateral adjustment. Compared to traditional rigid fixed connections, this design can flexibly adapt to multi-angle changes in materials during hoisting, effectively disperse off-center load stress, and prevent anti-detachment components from deforming or failing due to long-term uneven stress, thus greatly improving the applicability and service life of the mechanism. Enhanced locking stability: The locking assembly employs a combination structure of a circular tube, a connecting rod, and a spring. When the arc-shaped block slides to the sealing notch position, the elastic restoring force of the spring pushes the connecting rod to precisely insert into the connecting groove of the arc-shaped block, forming a double lock. Compared to a single spring or pin structure, this design can better resist high-frequency vibration and impact loads, preventing loosening and disengagement. Simultaneously, the sliding engagement structure between the side groove and the limiting block provides high-precision guidance for the arc-shaped block, ensuring accurate positioning of the sealing component and further improving the anti-disengagement effect. Reduced installation and maintenance costs: The mechanism features a compact layout of hinge points and locking components, with simple and clear connections between parts, reducing the difficulty and precision requirements of installation and debugging. For example, the sliding fit between the arc-shaped block and the connecting rod, and the rotating connection between the T-shaped block and the rotating block, all adopt a modular design, facilitating disassembly and replacement. During later maintenance, staff can quickly locate faulty components, reducing repair time and labor costs, and significantly improving the ease of equipment maintenance. Enhancing overall safety: Through the coordinated action of the arc-shaped block sliding sealing notch, the precise locking of the locking components, and the multi-angle adjustment function, this hook anti-detachment mechanism can effectively prevent materials from accidentally falling off during hoisting, reduce the probability of safety accidents, and effectively protect the safety of operators and equipment, meeting the high safety requirements of the large-scale and intelligent development of lifting equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 for Figure 2 AA section view diagram; Figure 4 for Figure 2 BB cross-sectional diagram in the middle; Figure 5 for Figure 4 A magnified view of part C in the diagram.

[0012] In the diagram: 1. H-shaped block; 2. Rectangular hinge block; 3. Rotating block; 4. Connecting block; 5. Connecting rod; 6. Side groove; 7. Arc-shaped block; 8. Limiting block; 9. T-shaped groove; 10. T-shaped block; 11. Insertion groove; 12. Circular tube; 13. Insertion rod; 14. Annular protrusion; 15. Spring. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-5 A crane hook anti-detachment mechanism includes an H-shaped block 1, a rectangular hinge block 2 hinged to the bottom inner side of the H-shaped block 1, a connecting rod 5 rotatably provided at the bottom of the rectangular hinge block 2, an arc groove provided inside the connecting rod 5, an arc block 7 movably installed inside the arc groove, and a locking component provided on the connecting rod 5 for fixing the arc block 7.

[0015] Furthermore, a notch is provided on one side of the connecting rod 5. One end of the arc-shaped block 7 can extend from the arc-shaped groove opening in the notch below the connecting rod 5 and be inserted into the arc-shaped groove opening in the notch above the connecting rod 5. When it is necessary to prevent it from falling off, the arc-shaped block 7 is slid, and then one end of the arc-shaped block 7 extends from the arc-shaped groove opening in the notch below the connecting rod 5 and is inserted into the arc-shaped groove opening in the notch above the connecting rod 5. Then the arc-shaped block 7 seals the notch of the connecting rod 5, and then the locking component is used to lock it, thereby preventing the object from falling off from the notch of the connecting rod 5.

[0016] Furthermore, a side groove 6 is provided at the lower end of the connecting rod 5 corresponding to the position of the arc-shaped block 7, and a limiting block 8 is integrally formed at the position of the arc-shaped block 7 corresponding to the side groove 6. The limiting block 8 is slidably engaged with the side groove 6.

[0017] Furthermore, the end of the arc-shaped block 7 is provided with a plug-in groove 11, and the locking component is engaged with the plug-in groove 11.

[0018] Furthermore, the locking assembly includes a circular tube 12, a connecting rod 13, and a spring 15. A circular hole is formed on the connecting rod 5. A circular tube 12 is fixedly installed on the outer side of the connecting rod 5 corresponding to the circular hole, and the circular tube 12 communicates with the circular hole. A connecting rod 13 is inserted into the circular tube 12. An annular protrusion 14 is integrally formed on one end of the connecting rod 13 inside the circular tube 12. A spring 15 is fixedly installed on the inner wall of the circular tube 12 on the side opposite to the circular hole. The spring 15 is sleeved on the outer side of the connecting rod 13, and one end of the spring 15 is fixedly connected to the annular protrusion 14. Together, pull the plug rod 13 outwards, then the spring 15 retracts, and the plug rod 13 retracts back into the circular tube 12, sliding the arc-shaped block 7. Then, one end of the arc-shaped block 7 extends from the arc-shaped groove opening in the notch below the connecting rod 5 and inserts into the arc-shaped groove opening in the notch above the connecting rod 5. At this time, the position of the plug groove 11 at the end of the arc-shaped block 7 corresponds to the position of the circular hole. Release the plug rod 13, the spring 15 rebounds, and squeezes the annular protrusion 14. The plug rod 13 passes through the circular hole and is inserted into the corresponding plug groove 11, completing the locking of the position of the arc-shaped block 7.

[0019] Furthermore, a rotating block 3 is fixedly installed at the bottom of the rectangular hinge block 2. A T-shaped groove 9 is opened inside the rotating block 3. A T-shaped block 10 is rotatably installed inside the T-shaped groove 9. A connecting block 4 is fixedly installed at the end of the T-shaped block 10. A connecting rod 5 is fixedly installed at the end of the connecting block 4. By setting the T-shaped block 10 and the rectangular hinge block 2, the connecting rod 5 can rotate freely and can be adjusted laterally.

[0020] Working principle: Pull the plug rod 13 outward, then the spring 15 retracts, and the plug rod 13 retracts back into the circular tube 12, sliding the arc block 7. Then, one end of the arc block 7 extends from the arc groove opening in the notch below the connecting rod 5 and inserts into the arc groove opening in the notch above the connecting rod 5. At this time, the position of the plug groove 11 at the end of the arc block 7 corresponds to the position of the circular hole. Release the plug rod 13, the spring 15 rebounds, and squeezes the annular protrusion 14. The plug rod 13 passes through the circular hole and is inserted into the corresponding plug groove 11, completing the locking of the position of the arc block 7.

[0021] Structural Description: H-shaped block 1 Structural features: The overall shape is "H", serving as the basic support component.

[0022] Position and connection: Located at the top of the mechanism, the bottom inner side is connected to the rectangular hinge block 2 by a hinge, providing an installation reference and hinge fulcrum for subsequent components.

[0023] Function: As the load-bearing base of the entire anti-detachment mechanism, it supports the rectangular hinge block 2 below, ensuring the overall stability of the mechanism.

[0024] Rectangular hinge block 2 Structural features: It is rectangular in shape, with the top hinged to the inner bottom of H-shaped block 1.

[0025] Position and connection: The upper end is connected to the H-shaped block 1 via a hinge shaft, and the lower end is fixedly installed with the rotating block 3.

[0026] Function: As an intermediate connecting component, it transmits the load between the H-shaped block 1 and the rotating block 3 below, and allows the rotating block 3 to swing around the hinge point to adapt to the force requirements at different angles.

[0027] Rotating block 3 Structural features: It is fixedly installed at the bottom of the rectangular hinge block 2, and has a T-shaped groove 9 inside.

[0028] Position and connection: The lower end is rotatably connected to the T-block 10 via the T-slot 9.

[0029] Function: Provides rotation space for T-block 10, allowing connecting rod 5 to rotate freely around the center of T-slot 9. At the same time, through cooperation with rectangular hinge block 2, it realizes the lateral adjustment function of connecting rod 5.

[0030] Connector Block 4 Structural features: The end is fixedly connected to the connecting rod 5, and the front end is fixedly connected to the end of the T-shaped block 10.

[0031] Position and connection: One end is rigidly connected to T-block 10, and the other end is rigidly connected to connecting rod 5.

[0032] Function: As a transitional connector between the T-block 10 and the connecting rod 5, it transmits the load between the two and ensures that the rotational freedom of the rotating block 3 is effectively transmitted to the connecting rod 5.

[0033] Connecting rod 5 Structural features: a long strip rod with an arc-shaped groove inside, a through notch on one side, and a side groove 6 at the lower end corresponding to the position of the arc-shaped block 7.

[0034] Position and connection: The upper end is connected to the T-shaped block 10 through the connecting block 4, and the lower end accommodates the arc block 7 through the arc groove.

[0035] Function: As the main load-bearing component for preventing hook detachment, the notch is used for the sliding passage of the arc-shaped block 7, and the side groove 6 cooperates with the limiting block 8 of the arc-shaped block 7 to guide the arc-shaped block 7 to slide and restrict its detachment. At the same time, the position of the arc-shaped block 7 is fixed by the locking component.

[0036] Side groove 6 Structural features: A long, narrow groove extending along the length of the connecting rod 5, located at the lower end of the connecting rod 5.

[0037] Position and connection: Located on the side of the connecting rod 5, it slides and engages with the limiting block 8 of the arc-shaped block 7.

[0038] Function: In conjunction with the limit block 8, it provides a guide track for the sliding of the arc block 7, ensuring that the arc block 7 moves along a predetermined trajectory, while preventing it from falling off the side of the connecting rod 5.

[0039] Arc-shaped block 7 Structural features: It is arc-shaped, with one end inserted into the upper notch through the arc-shaped groove opening below the notch of the connecting rod 5, and the end has a plug-in groove 11. The side is integrally formed with a limit block 8.

[0040] Position and connection: Installed in the arc-shaped groove of the connecting rod 5, the limiting block 8 is embedded in the side groove 6.

[0041] Function: By sliding the notch of the connecting rod 5, an anti-detachment barrier is formed; the insertion slot 11 cooperates with the insertion rod 13 of the locking component to achieve position locking and prevent objects from falling out of the notch.

[0042] Limit block 8 Structural features: It is integrally formed with the arc-shaped block 7, and is in the shape of a protrusion, which fits the side groove 6 of the connecting rod 5.

[0043] Position and connection: Located on the side of the arc-shaped block 7, it is snapped into the side groove 6.

[0044] Function: Restricts the movement direction of the arc block 7, ensuring that it can only slide along the side groove 6, and prevents the arc block 7 from deviating or detaching from the connecting rod 5 during movement.

[0045] T-groove 9 Structural features: A groove with a "T" shaped cross-section is formed inside the rotating block 3.

[0046] Position and connection: Located at the center of rotating block 3, it accommodates T-shaped block 10 and is rotatably connected to it.

[0047] Function: Provides rotation space for T-block 10, allowing connecting rod 5 to rotate 360° around the center of T-slot 9, while also allowing T-block 10 to move slightly laterally within the slot, thus realizing the angle adjustment function of connecting rod 5.

[0048] T-block 10 Structural features: The cross-section is "T" shaped, and the end is fixedly connected to connecting block 4.

[0049] Position and connection: The upper end is embedded in the T-shaped groove 9 of the rotating block 3, and the lower end is rigidly connected to the connecting block 4.

[0050] Function: As a rotating connector between rotating block 3 and connecting block 4, the connecting rod 5 can be freely rotated and laterally adjusted by rotating within the T-slot 9, adapting to the multi-angle force requirements of the crane hook.

[0051] Socket 11 Structural features: A groove is provided at the end of the arc-shaped block 7, which is adapted to the plug rod 13 of the locking assembly.

[0052] Position and connection: Located at the end of the arc-shaped block 7, when the arc-shaped block 7 slides to the sealing notch position, it is aligned with the circular hole of the connecting rod 5.

[0053] Function: Provides a plug-in positioning point for the plug-in rod 13, and fixes the position of the arc-shaped block 7 by cooperating with the locking component to ensure the stability of the anti-detachment barrier.

[0054] 12 round tubes Structural features: A cylindrical tube fitting, fixedly installed on the outside of the connecting rod 5, connecting to the circular hole of the connecting rod 5.

[0055] Position and connection: One end is aligned with and fixed to the circular hole of the connecting rod 5, and the other end is open for insertion of the plug rod 13.

[0056] Function: Serves as the mounting base for the locking assembly, accommodates the plug rod 13 and the spring 15, guides the linear movement of the plug rod 13, and ensures that it is accurately inserted into the plug slot 11.

[0057] Connector 13 Structural features: A cylindrical rod with an annular protrusion 14 integrally formed at one end, which can be inserted into a circular tube 12 and a plug groove 11.

[0058] Position and connection: It is inserted inside the circular tube 12, with the annular protrusion 14 located inside the circular tube 12 and the other end extending out of the circular tube 12.

[0059] Function: The arc-shaped block 7 is locked and unlocked by a pulling action: when pulled outward, it disengages from the insertion slot 11, allowing the arc-shaped block 7 to slide; after being released, it is inserted into the insertion slot 11 under the action of the spring 15, fixing the position of the arc-shaped block 7.

[0060] 14 ring-shaped protrusions Structural features: An annular boss surrounding one end of the plug rod 13 is located inside the circular tube 12.

[0061] Position and connection: It is integrally formed with the plug rod 13 and slides against the inner wall of the circular tube 12.

[0062] Function: As the fulcrum of spring 15, it bears the elastic force of spring 15, ensuring that the plug rod 13 compresses spring 15 when unlocking and is inserted into plug slot 11 by spring rebound when locking.

[0063] Spring 15 Structural features: A cylindrical helical spring is sleeved on the outside of the plug rod 13.

[0064] Position and connection: One end is fixed to the inner wall of the circular tube 12, and the other end is fixedly connected to the annular protrusion 14.

[0065] Function: Provides elastic restoring force. When the plug rod 13 is pulled out, it compresses and stores energy. When released, it pushes the annular protrusion 14 and the plug rod 13 to reset, ensuring that the plug rod 13 automatically inserts into the plug slot 11, thus achieving the locking function.

[0066] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hook anti-drop mechanism for a lifting trolley, characterized by comprising: Includes an H-shaped block (1), with a rectangular hinge block (2) hinged to the inner bottom of the H-shaped block (1), and a connecting rod (5) rotatably provided at the bottom of the rectangular hinge block (2). An arc groove is provided inside the connecting rod (5), and an arc block (7) is movably installed inside the arc groove. A locking component is provided on the connecting rod (5) for fixing the arc block (7).

2. The hook anti-drop mechanism for a lifting trolley according to claim 1, characterized in that: A notch is provided on one side of the connecting rod (5), and one end of the arc-shaped block (7) can extend from the arc-shaped groove opening in the notch below the connecting rod (5) and be inserted into the arc-shaped groove opening above the notch of the connecting rod (5).

3. The hook anti-drop mechanism for a lifting trolley according to claim 1, characterized in that: The lower end of the connecting rod (5) is provided with a side groove (6) corresponding to the position of the arc block (7). A limiting block (8) is integrally formed on the arc block (7) corresponding to the position of the side groove (6). The limiting block (8) is slidably engaged with the side groove (6).

4. The hook anti-drop mechanism for a lifting trolley according to claim 1, characterized in that: The end of the arc-shaped block (7) is provided with a plug groove (11), and the locking component is engaged with the plug groove (11).

5. The hook anti-drop mechanism for a lifting trolley according to claim 4, characterized in that: The locking assembly includes a circular tube (12), a plug rod (13), and a spring (15). A circular hole is provided on the connecting rod (5). A circular tube (12) is fixedly installed on the outside of the connecting rod (5) at the position corresponding to the circular hole. The circular tube (12) is connected to the circular hole. A plug rod (13) is inserted into the circular tube (12). An annular protrusion (14) is integrally formed on one end of the plug rod (13) inside the circular tube (12). A spring (15) is fixedly installed on the inner wall of the circular tube (12) on the side away from the circular hole. The spring (15) is sleeved on the outside of the plug rod (13). One end of the spring (15) is fixedly connected to the annular protrusion (14).

6. The hook anti-drop mechanism for a lifting trolley according to claim 1, characterized in that: A rotating block (3) is fixedly installed at the bottom of the rectangular hinge block (2). A T-shaped groove (9) is opened inside the rotating block (3). A T-shaped block (10) is rotatably installed inside the T-shaped groove (9). A connecting block (4) is fixedly installed at the end of the T-shaped block (10). A connecting rod (5) is fixedly installed at the end of the connecting block (4).

Images