A swivel hook

Abstract

The application provides a rotating hook, relates to the technical field of hooks, and comprises a hook body, a shell, a hoisting shaft, rotating shafts, a transmission mechanism and a switch mechanism, a hook seat capable of supporting the hook body is fixedly installed in the shell, the hoisting shaft is rotatably connected to the hook seat, the hook body is installed at the bottom end of the hoisting shaft, two rotating shafts are arranged, the two rotating shafts are rotatably connected to the two sides of the hook seat respectively, pulley mechanisms are installed on the two rotating shafts and are used for supporting the hook body to move up and down, the transmission mechanism is arranged on the hook seat and is used for driving the two rotating shafts and the hoisting shaft to rotate in linkage, and the switch mechanism is arranged on the shell and is used for controlling the start and stop of the transmission mechanism. Through the technical scheme, the technical problem that the hook rotating technology in the related art is difficult to consider precision, efficiency, structural simplicity and practicality and is difficult to meet the demand of modern port hoisting operation is solved.

Description

Technical Field

[0001] This invention belongs to the field of lifting hook technology, specifically, it relates to a rotating lifting hook. Background Technology

[0002] Port cranes are the core equipment for loading and unloading cargo at ports. In actual lifting operations, the crane hook needs to be rotated and adjusted due to factors such as cargo placement, lifting point orientation, and on-site working conditions in order to accurately connect with the lifting point and ensure stable lifting. This is a key link in improving operational efficiency and safety.

[0003] Currently, the industry mainly uses two traditional methods to address the need for hook rotation control, both of which have significant drawbacks: The first is manual control, which relies on operators to manually pull or pry to rotate the hook. This method has poor positioning accuracy and slow response, resulting in low loading and unloading efficiency, increased labor intensity for operators, and increased on-site safety risks. The second method is to add a separate drive mechanism, which involves adding an independent rotation drive component to the hook assembly to achieve electric rotation. However, this method occupies limited installation space, damages the original structural integrity of the hook, and leads to structural redundancy, increased costs, difficult maintenance, and poor versatility.

[0004] In conclusion, existing hook rotation technology struggles to balance precision, efficiency, structural simplicity, and practicality, making it difficult to meet the demands of modern port lifting operations. Summary of the Invention

[0005] The purpose of this invention is to provide a rotating hook that solves the technical problem in related technologies where rotating hooks are difficult to balance accuracy, efficiency, structural simplicity and practicality, and thus cannot meet the needs of modern port lifting operations.

[0006] At least one embodiment of the present invention provides a rotating hook, including a hook body, and further including: a housing, a lifting shaft, a rotating shaft, a transmission mechanism, and a switching mechanism. A support for the hook body is fixedly installed inside the housing. The lifting shaft is rotatably connected to the support. The hook body is installed at the bottom end of the lifting shaft. Two rotating shafts are provided, each rotatably connected to one side of the support. Each rotating shaft is equipped with a pulley mechanism for supporting the hook body in lifting and lowering movements. The transmission mechanism is located on the support and is used to drive the two rotating shafts and the lifting shaft to rotate in conjunction. The switching mechanism is located on the housing and is used to control the start and stop of the transmission mechanism.

[0007] To convert the differential motion of two rotating shafts into the rotation of the lifting shaft, the transmission mechanism includes: transmission gears, support shafts, linkage gears, and a linkage assembly. Two transmission gears are provided, each fixedly connected to one of the two rotating shafts. Two support shafts are provided, each rotatably connected to both sides of the lifting base. Linkage gears are fixedly connected to each of the two support shafts, and each linkage gear meshes with one of the two transmission gears. The linkage assembly is mounted on the lifting shaft to connect the two linkage gears in series. The linkage assembly includes: a first bevel gear and a second bevel gear. The first bevel gear is fixedly connected to each of the two support shafts. The second bevel gear is mounted on the lifting shaft via a one-way clutch. A sliding key is installed on the lifting shaft, and a keyway is formed within the one-way clutch, slidingly disposed on the sliding key.

[0008] To control the meshing between the first and second bevel gears, a protective cover is fixedly connected to the top of the housing. The switching mechanism is located inside the protective cover. The switching mechanism includes a base plate, a drive rod, and a top plate. Two base plates are provided, and the two base plates are rotatably connected to the second bevel gear via a rotating ring. A drive rod is fixedly connected to the top of each of the two base plates. Two sliding holes are provided on the housing, and the two drive rods are slidably connected within the two sliding holes. The top plate is fixedly connected to the top of the two drive rods. A drive assembly is installed at the top of the housing. The drive assembly is used to drive the top plate and the two drive rods to move up and down. The drive assembly includes: a rotating gear, a drive screw, and a power assembly. The rotating gear is rotatably connected to the top of the housing, and the drive screw is fixedly connected to the top of the rotating gear. A screw hole is provided on the top plate, and the drive screw is threaded into the screw hole. The power assembly is located at the top of the housing and is used to drive the rotating gear to rotate. The power assembly includes: a top frame, a drive gear, and a motor. The top frame is fixedly connected to the top of the housing, and the drive gear is rotatably connected inside the top frame. The drive gear meshes with the rotating gear. The motor is mounted on the top of the top frame, and the output end of the motor passes through the top frame and is fixedly connected to the drive gear.

[0009] In order to drive the hook to move stably in lifting and lowering, the pulley mechanism includes: a sliding wheel and a lifting wire. The housing has two through slots, and the two lifting wires are respectively located in the two through slots. The sliding wheel is fixedly connected to the rotating shaft, and a sliding groove is provided on the sliding wheel, and the lifting wire is driven in the sliding groove.

[0010] This invention provides a rotating hook that, through the arrangement of a housing, a lifting shaft, a rotating shaft, a transmission mechanism, and a switching mechanism, particularly by utilizing the transmission mechanism to convert the differential speed of two rotating shafts (i.e., two pulley mechanisms) into the lateral rotation of the lifting shaft, thereby driving the hook body to rotate. Compared to manual control, this invention achieves precise and efficient control of the hook body. Compared to adding an independent drive mechanism, this invention directly utilizes the existing power source of the pulley mechanism for differential drive during lifting operations, eliminating the need for additional large rotating drive components. Thus, while achieving electric rotation, it maintains a highly streamlined and integrated structure, reducing costs and the difficulty of later maintenance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the protective cover provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the shell cross-section provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the housing provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the switching mechanism provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the transmission mechanism provided in an embodiment of the present invention; Figure 7 Provided by the embodiments of the present invention Figure 4 A magnified structural diagram of point A in the middle.

[0013] In the diagram: 1. Hook body; 2. Housing; 3. Lifting base; 4. Lifting shaft; 5. Rotating shaft; 6. Transmission gear; 7. Support shaft; 8. Linkage gear; 9. First bevel gear; 10. Second bevel gear; 11. Base plate; 12. Drive rod; 13. Top plate; 14. Rotating gear; 15. Drive screw; 16. Top frame; 17. Drive gear; 18. Motor; 19. Pulley; 20. Lifting wire; 21. Protective cover; 22. Sliding key; 23. One-way clutch; 24. Rotating ring. Detailed Implementation The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0014] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0015] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0016] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0017] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0018] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0019] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.

[0020] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0021] like Figures 1-7 As shown, a rotating hook according to an embodiment of the present invention is illustrated, including a hook body 1, and further including: a housing 2, a lifting shaft 4, a rotating shaft 5, a transmission mechanism, and a switching mechanism. A support 3 for supporting the hook body 1 is fixedly installed inside the housing 2. The lifting shaft 4 is rotatably connected to the support 3. The hook body 1 is installed at the bottom end of the lifting shaft 4. There are two rotating shafts 5, which are respectively rotatably connected to both sides of the support 3. Each of the two rotating shafts 5 is equipped with a pulley mechanism for supporting the lifting body 1 to move up and down. The transmission mechanism is set on the support 3 for driving the two rotating shafts 5 and the lifting shaft 4 to rotate in linkage. The switching mechanism is set on the housing 2 for controlling the start and stop of the transmission mechanism.

[0022] Through the above structure, the present invention organically combines the lifting and rotating functions of the hook, providing a structural foundation for subsequent rotation using the difference in lifting power. At the same time, the housing 2 provides effective protection for the internal precision components, improving the service life of the equipment under harsh working conditions. The pulley mechanism includes a pulley 19 and a lifting wire 20. Two through slots are provided on the housing 2, and the two lifting wires 20 are respectively located in the two through slots. The pulley 19 is fixedly connected to the rotating shaft 5. A sliding groove is provided on the pulley 19, and the lifting wire 20 is driven in the sliding groove.

[0023] When the hook body 1 needs to be lifted or lowered, the lifting wire 20 is driven in the sliding groove of the sliding wheel 19, thereby driving the hook body 1 to move up and down. The two sliding wheels 19 are symmetrically arranged on both sides of the lifting base 3, so that the lifting load is evenly transmitted to the lifting base 3 through the two rotating shafts 5, avoiding the lifting base 3 from bearing the eccentric load moment, thereby reducing the rotational friction between the lifting shaft 4 and the lifting base 3, so that the hook body 1 can still rotate flexibly under heavy load. The through groove is opened on the side wall of the shell 2, and its width is slightly larger than the diameter of the lifting wire 20, which not only ensures that the wire can pass freely, but also restricts the swing amplitude of the wire in the horizontal direction, preventing friction and wear between the wire and the edge of the shell 2.

[0024] The transmission mechanism includes: transmission gears 6, support shafts 7, linkage gears 8, and linkage components. There are two transmission gears 6, which are fixedly connected to two rotating shafts 5 respectively. There are two support shafts 7, which are rotatably connected to both sides of the hanger 3. Linkage gears 8 are fixedly connected to both support shafts 7, and the two linkage gears 8 mesh with the two transmission gears 6 respectively. The linkage components are set on the lifting shaft 4 and are used to connect the two linkage gears 8 in series. The linkage components include: a first bevel gear 9 and a second bevel gear 10. The first bevel gear 9 is fixedly connected to the two support shafts 7 respectively. The second bevel gear 10 is mounted on the lifting shaft 4 through a one-way clutch 23. A sliding key 22 is installed on the lifting shaft 4. A keyway is opened in the one-way clutch 23 and the keyway is slidably set on the sliding key 22.

[0025] When the sliding wheel 19 rotates, it drives the rotating shaft 5 to rotate. When the rotating shaft 5 rotates, it drives the transmission gear 6 to rotate. When the transmission gear 6 rotates, it drives the linkage gear 8 to rotate. When the linkage gear 8 rotates, it drives the corresponding first bevel gear 9 to rotate. At this time, the rotation of the first bevel gear 9 and the linkage gear 8 is supported by the support shaft 7 and is engaged with the two first bevel gears 9 by the second bevel gear 10. With the setting of the one-way clutch 23, when the two lifting wires 20 move at different speeds or one is stationary and the other is rising, the two sliding wheels 19 will generate differential motion. This differential motion is converted into the lateral rotation of the lifting shaft 4 and the hook body 1, thereby driving the hook body 1. When the two sliding wheels 19 rotate at the same speed, the torques exerted by the two first bevel gears 9 on the second bevel gear 10 are equal in magnitude and opposite in direction. The second bevel gear 10 is in a state of force balance and does not rotate. At this time, the hook body 1 only performs lifting and lowering actions, avoiding unnecessary rotational interference. When a speed difference occurs on both sides, the torque balance is broken, and the second bevel gear 10 rotates with the first bevel gear 9 on the side with the faster speed. Its rotation direction is determined by the faster side, thereby realizing the control of the rotation direction. This differential drive method makes the rotation speed proportional to the speed difference of the wire ropes on both sides. The operator can intuitively judge the rotation speed based on the speed difference, reducing the difficulty of operation.

[0026] The transmission gear 6 and the linkage gear 8 form a first-stage reduction transmission, which converts the high-speed rotation of the sliding wheel 19 into the low-speed, high-torque rotation of the support shaft 7. This allows the first bevel gear 9 to obtain sufficient driving torque to overcome the inertial load when the hook body 1 rotates. The design of the one-way clutch 23 and the sliding key 22 allows the second bevel gear 10 to rotate synchronously with the hoisting shaft 4 and slide freely along the axial direction. This structure not only realizes power transmission but also provides motion freedom for the switching mechanism to control the position of the second bevel gear 10, avoiding the risk of fatigue failure caused by using elastic elements.

[0027] A protective cover 21 is fixedly connected to the top of the housing 2. The switching mechanism is located inside the protective cover 21. The switching mechanism includes a base plate 11, a drive rod 12, and a top plate 13. There are two base plates 11, which are rotatably connected to the second bevel gear 10 via a rotating ring 24. A drive rod 12 is fixedly connected to the top of each of the two base plates 11. Two sliding holes are provided on the housing 2, and the two drive rods 12 are slidably connected in the two sliding holes respectively. The top plate 13 is fixedly connected to the top of the two drive rods 12. A drive assembly is installed on the top of the housing 2. The drive assembly is used to drive the top plate 13 and the two drive rods 12 to move up and down. The drive assembly includes a rotating gear 14, a drive screw 15, and a power assembly. The rotating gear 14 is rotatably connected to the top of the housing 2, and the drive screw 15 is fixedly connected to the top of the rotating gear 14. A screw hole is provided on the top plate 13, and the drive screw 15 is threaded into the screw hole. The power assembly is located on the top of the housing 2 and is used to drive the rotating gear 14. The rotating power assembly includes a top frame 16, a drive gear 17, and a motor 18. The top frame 16 is fixedly connected to the top of the housing 2. The drive gear 17 is rotatably connected inside the top frame 16 and meshes with the rotating gear 14. The motor 18 is mounted on the top of the top frame 16, and its output end passes through the top frame 16 and is fixedly connected to the drive gear 17. Two base plates 11 are symmetrically fixed on both sides of the second bevel gear 10, forming a gantry structure with the two drive rods 12. This ensures that the second bevel gear 10 is subjected to uniform force during lifting and lowering, preventing jamming between the second bevel gear 10 and the hoisting shaft 4 due to unilateral force application. The drive screw 15 and the top plate 13 are threaded together. Utilizing the self-locking characteristic of the threaded pair, the second bevel gear 10 can be kept engaged or disengaged after the motor 18 stops, eliminating the need for continuous power supply from the motor 18 and reducing energy consumption. The protective cover 21 encloses the entire switching mechanism, preventing external debris from falling into the threads or gear meshing area and ensuring the long-term reliability of the switching mechanism.

[0028] When the hook body 1 does not need to rotate, the motor 18 drives the drive gear 17 and the rotating gear 14 to rotate. The drive gear 17 drives the rotating gear 14 to rotate, thereby causing the top plate 13 to descend. When the top plate 13 descends, it drives the drive rod 12 to descend. When the drive rod 12 descends, it drives the bottom plate 11 to descend. When the bottom plate 11 descends, it drives the second bevel gear 10 to descend, thereby causing the second bevel gear 10 to move away from the two first bevel gears 9, thus disengaging the linkage between the two sliding wheels 19. After the second bevel gear 10 descends, it is completely disengaged from the two first bevel gears 9. At this time, the rotation of the two sliding wheels 19 is no longer transmitted to the lifting shaft 4 through the transmission mechanism. The hook body 1 can only be raised and lowered and cannot rotate. This state is suitable for conventional lifting operation scenarios, which can avoid the rotation function being accidentally triggered. At the same time, it eliminates the meshing friction between the first bevel gear 9 and the second bevel gear 10, reducing unnecessary power loss and gear wear.

[0029] Working principle: When the hook needs to rotate, the sliding wheel 19 rotates, driving the rotating shaft 5 to rotate. The rotating shaft 5 rotates, driving the transmission gear 6 to rotate. The transmission gear 6 rotates, driving the linkage gear 8 to rotate. The linkage gear 8 rotates, driving the corresponding first bevel gear 9 to rotate. At this time, the rotation of the first bevel gear 9 and the linkage gear 8 is supported by the support shaft 7, and is engaged with the two first bevel gears 9 by the second bevel gear 10. With the help of the one-way clutch 23, when the transmission speed of the two lifting wires 20 is different (fast and slow) or one is stationary and the other is rising, the two sliding wheels 19 will produce differential movement. This converts the differential motion into lateral rotation of the lifting shaft 4 and the hook body 1, thereby driving the hook body 1 to rotate. When the hook body 1 does not need to rotate, the motor 18 drives the drive gear 17 and the rotating gear 14 to rotate. The drive gear 17 drives the rotating gear 14 to rotate, thereby driving the top plate 13 to descend. When the top plate 13 descends, it drives the drive rod 12 to descend. When the drive rod 12 descends, it drives the bottom plate 11 to descend. When the bottom plate 11 descends, it drives the second bevel gear 10 to descend, thereby moving the second bevel gear 10 away from the two first bevel gears 9, thus disengaging the linkage between the two sliding wheels 19.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotating hook, comprising a hook body (1), characterized in that, Also includes: The housing (2) has a support (3) that can support the hook body (1) fixedly installed inside the housing (2). The lifting shaft (4) is rotatably connected to the lifting base (3), and the hook body (1) is installed at the bottom end of the lifting shaft (4); Rotating shaft (5), there are two rotating shafts (5), the two rotating shafts (5) are respectively rotatably connected to both sides of the hanging base (3), and each of the two rotating shafts (5) is equipped with a pulley mechanism to support the lifting body (1) for lifting and moving. The transmission mechanism is mounted on the hanger (3) and is used to drive the two rotating shafts (5) and the hoisting shaft (4) to rotate in linkage. A switching mechanism is provided on the housing (2) and is used to control the start and stop of the transmission mechanism.

2. A rotating hook according to claim 1, characterized in that, The transmission mechanism includes: The transmission gear (6) is provided in two parts, and the two transmission gears (6) are respectively fixedly connected to the two rotating shafts (5); Support shaft (7), two support shafts (7) are provided, and the two support shafts (7) are respectively rotatably connected to both sides of the hanger (3); Linkage gear (8), the two support shafts (7) are fixedly connected to the linkage gear (8), and the two linkage gears (8) mesh with the two transmission gears (6) respectively; A linkage component is provided on the hoisting shaft (4) for connecting the two linkage gears (8) in series.

3. A rotating hook according to claim 2, characterized in that, The linkage component includes: The first bevel gear (9) is fixedly connected to the two support shafts (7); The second bevel gear (10) is mounted on the hoisting shaft (4) via a one-way clutch (23). A sliding key (22) is mounted on the hoisting shaft (4). A keyway is provided in the one-way clutch (23), and the keyway is slidably disposed on the sliding key (22).

4. A rotating hook according to claim 3, characterized in that, The switching mechanism includes: Two base plates (11) are provided, and the two base plates (11) are rotatably connected to the second bevel gear (10) through a rotating ring (24); The drive rod (12) is fixedly connected to the top of both base plates (11). The top plate (13) is fixedly connected to the top of the two drive rods (12). The top of the housing (2) is equipped with a drive assembly, which is used to drive the top plate (13) and the two drive rods (12) to move up and down.

5. A rotating hook according to claim 4, characterized in that, The driving component includes: Rotating gear (14), which is rotatably connected to the top of the housing (2); A drive screw (15) is fixedly connected to the top of the rotating gear (14). A screw hole is provided on the top plate (13), and the drive screw (15) is threaded into the screw hole. A power assembly is disposed at the top of the housing (2) and is used to drive the rotating gear (14) to rotate.

6. A rotating hook according to claim 5, characterized in that, The power assembly includes: Top frame (16), which is fixedly connected to the top of the housing (2); A drive gear (17) is rotatably connected inside the top frame (16), and the drive gear (17) meshes with the rotating gear (14); The motor (18) is mounted on the top of the top frame (16), and the output end of the motor (18) passes through the top frame (16) and is fixedly connected to the drive gear (17).

7. A rotating hook according to claim 1, characterized in that, The pulley mechanism includes: A sliding wheel (19) is fixedly connected to the rotating shaft (5), and a sliding groove is provided on the sliding wheel (19); The lifting wire (20) is driven in the sliding groove.

8. A rotating hook according to claim 4, characterized in that, The top of the housing (2) is fixedly connected to a protective cover (21), and the switching mechanism is located inside the protective cover (21).

9. A rotating hook according to claim 7, characterized in that, The housing (2) has two through slots, and the two lifting wires (20) are located in the two through slots respectively.

10. A rotating hook according to claim 4, characterized in that, The housing (2) has two sliding holes, and the two drive rods (12) are slidably connected in the two sliding holes respectively.

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