Anti-swing lifting hook head for offshore crane

Abstract

The utility model discloses an anti-swing lifting hook head for an offshore crane. The anti-swing lifting hook head comprises a lifting hook body, a bearing shell, a triangular connecting plate and a triangular adapter plate, wherein the bearing shell is mounted at the top end of the lifting hook body; the triangular connecting plate and the triangular adapter plate are sequentially mounted at the top of the bearing shell; a plurality of angle compensation mechanisms are mounted between the triangular connecting plate and the triangular adapter plate; through cooperation of a controller and an angle sensor, when the horizontal angle value of a lifting hook body exceeds an angle compensation threshold value, the corresponding compensation direction and compensation amount can be calculated according to the current deviation angle, a linear motion assembly in a corresponding angle compensation mechanism is controlled, and through cooperation of a translation block, an inclined wedge sliding block, a compensation sliding plate and a triangular connecting plate, the angle compensation of the lifting hook body is achieved. When the lifting hook body is shaken, the state of the lifting hook body can be dynamically adjusted to ensure that the lifting hook body is horizontal so as to counteract the shaking of the swing, and the real-time monitoring and accurate compensation of the shaking in the lifting process are realized, so that the safety and the stability of the operation are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to an anti-sway hook head for offshore cranes. Background Technology

[0002] In offshore operations, especially in crane operations involving the lifting of heavy cargo, swaying during lifting is a critical factor affecting operational safety and efficiency due to the effects of waves, wind, and other marine environmental factors. Traditional offshore crane hook designs often lack effective anti-sway mechanisms, causing cargo to sway violently during lifting due to external environmental influences. This not only increases operational difficulty but also poses potential safety threats to the crane structure, the cargo itself, and surrounding personnel and equipment.

[0003] Currently, most anti-sway solutions in existing technologies rely on physical damping devices, such as spring dampers and hydraulic dampers. Although these devices can alleviate swaying to some extent, their effects are limited and they often cannot effectively cope with the complex and ever-changing working environment at sea, making it difficult to meet the requirements of high safety and high efficiency in hoisting. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and provides an anti-sway hook head for marine cranes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an anti-sway hook head for an offshore crane, comprising: a hook body, a bearing shell installed at the top of the hook body, and a triangular connecting plate and a triangular adapter plate installed sequentially at the top of the bearing shell;

[0006] Several angle compensation mechanisms are installed between the triangular connecting plate and the triangular adapter plate. The angle compensation mechanism includes: a fixing block fixed to the bottom of the triangular adapter plate, a translation block disposed at the bottom of the fixing block, and a wedge slider fixed to the bottom of the translation block; a compensation slide is disposed at the bottom of the wedge slider, and the top of the triangular connecting plate is hinged to the compensation slide.

[0007] A linear motion component for driving the translation block to make precise translations is provided between the fixed block and the translation block. A controller for setting an angle compensation threshold and sending and receiving commands is provided on one side of the fixed block. An angle sensor for real-time monitoring of the horizontal angle of the hook body is provided inside the controller.

[0008] In a preferred embodiment of this utility model, the inclined surface of the wedge slider faces the middle of the triangular connecting plate, one side of the compensation slide plate is slidably connected to the inclined surface of the wedge slider, and the controller is electrically connected to the angle sensor.

[0009] In a preferred embodiment of this utility model, the linear motion component includes: a servo motor fixed to the bottom of the triangular adapter plate, a moving groove formed at the bottom of the fixed block, and a threaded rod disposed inside the moving groove; the output end of the servo motor is fixed to one end of the threaded rod, a moving block is threadedly connected to the side of the threaded rod, and the bottom of the moving block is fixed to the top of the translation block.

[0010] In a preferred embodiment of this utility model, the sides of the threaded rod near both ends are rotatably connected to the inner side of the movable groove, and the width of the movable block is the same as the width of the movable groove.

[0011] In a preferred embodiment of this invention, the top of the translation block is located at the bottom of the servo motor.

[0012] In a preferred embodiment of the present invention, the bottom of the fixed block is provided with a plurality of sliding grooves, and the top of the translation block is fixed with a plurality of sliding strips. The top cross-sectional shape of the sliding strips is T-shaped, and the top of the sliding strips is slidably connected to the inner side of the sliding grooves.

[0013] In a preferred embodiment of this utility model, the inner side of the slide groove extends to both sides of the fixing block, and the number of slide grooves is the same as the number of slide bars.

[0014] In a preferred embodiment of this utility model, a spherical bearing is fixed to the bottom of the compensation slide plate, and the top of the triangular connecting plate is coaxially connected and fixed to the inner side of the spherical bearing.

[0015] In a preferred embodiment of this utility model, a magnet is fixed to the bottom of the bearing housing, and a safety lock is hinged to one side of the hook body, with the top of the safety lock contacting the bottom of the magnet.

[0016] In a preferred embodiment of this utility model, a lifting ring for connecting the crane and the anti-sway hook head is installed on the top of the triangular adapter plate.

[0017] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0018] (1) This utility model provides an anti-sway hook head for offshore cranes. By installing several angle compensation mechanisms between the triangular connecting plate and the triangular transition plate, and through the cooperation of the controller and the angle sensor, when the horizontal angle value of the hook body exceeds the angle compensation threshold, the corresponding compensation direction and compensation amount can be calculated based on the current offset angle. The linear motion component in the corresponding angle compensation mechanism is controlled. With the cooperation of the translation block, the wedge slider, the compensation slide plate and the triangular connecting plate, the state of the hook body can be dynamically adjusted when it is shaken to ensure that it is horizontal as much as possible, so as to counteract the swaying. Real-time monitoring and precise compensation of swaying during the lifting process are realized, thereby significantly improving the safety and stability of the operation.

[0019] (2) In this utility model, by setting a linear motion component between the fixed block and the translation block, when it is necessary to drive the translation block to make linear motion, the cooperation of the servo motor, the threaded rod, the moving groove and the moving block can drive the moving block connected to the threaded side of the threaded rod to make linear motion along the side of the threaded rod. At the same time, since the width of the moving block is the same as the width of the moving groove, it can limit the two sides of the moving block when making linear motion, thereby enabling the translation block to make linear motion quickly and stably, thereby improving the controllability and stability during angle compensation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0022] Figure 2 This is a front view of the preferred embodiment of the present invention and a partial enlarged view thereof;

[0023] Figure 3 This is a side view of a preferred embodiment of the present invention and a partially enlarged view thereof;

[0024] In the diagram: 1. Hook body; 2. Bearing housing; 21. Triangular connecting plate; 22. Triangular adapter plate; 3. Fixing block; 31. Translation block; 32. Wedge slider; 33. Compensating slide plate; 4. Controller; 5. Servo motor; 51. Moving groove; 52. Threaded rod; 53. Moving block; 6. Slide groove; 61. Slide bar; 7. Spherical bearing; 8. Magnet; 81. Safety lock; 9. Lifting ring. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] like Figure 1 and Figure 2 As shown, an anti-sway hook head for an offshore crane includes: a hook body 1, a bearing housing 2 installed at the top of the hook body 1, and a triangular connecting plate 21 and a triangular adapter plate 22 sequentially installed at the top of the bearing housing 2; a plurality of angle compensation mechanisms are installed between the triangular connecting plate 21 and the triangular adapter plate 22, the angle compensation mechanism including: a fixing block 3 fixed to the bottom of the triangular adapter plate 22, a translation block 31 set at the bottom of the fixing block 3, and a wedge slider 32 fixed to the bottom of the translation block 31; a compensation slide plate 33 is provided at the bottom of the wedge slider 32, and the top of the triangular connecting plate 21 is hinged to the compensation slide plate 33; a linear motion component for driving the translation block 31 to make precise translation is provided between the fixing block 3 and the translation block 31, and a controller 4 for setting the angle compensation threshold and sending and receiving commands is provided on one side of the fixing block 3, and an angle sensor for real-time monitoring of the horizontal angle of the hook body 1 is provided inside the controller 4.

[0027] It should be noted that the inclined surface of the wedge slider 32 faces the middle of the triangular connecting plate 21, one side of the compensation slide plate 33 is slidably connected to the inclined surface of the wedge slider 32, and the controller 4 is electrically connected to the angle sensor. The control method of the controller 4 and the control circuit and algorithm for achieving fully automatic compensation are existing technologies and can be implemented by those skilled in the art through programming. They are common knowledge in the field, so this application will not explain the control method and module in detail. The number of angle compensation mechanisms is preferably three sets, and the included angle between adjacent angle compensation mechanisms is preferably 120°.

[0028] Specifically, after the top of the triangular adapter plate 22 is installed onto the lifting end of the offshore crane and the sling is mounted on the hook body 1, the anti-sway angle compensation threshold (e.g., -10° to 10°) can be set via the controller 4. During the lifting operation, the horizontal angle of the hook body 1 is monitored in real time by the angle sensor, and the detected angle change data is transmitted to the controller 4 in real time. When the angle value exceeds the angle compensation threshold, the controller 4 quickly uses the compensation algorithm to calculate the corresponding compensation direction and compensation amount based on the current offset angle, and controls the linear motion component in the corresponding angle compensation mechanism to drive... The translation block 31 moves in a straight line, causing the inclined wedge slider 32 at the bottom of the translation block 31 to move synchronously. Since one side of the compensation plate 33 is slidably connected to the inclined surface of the inclined wedge slider 32, the compensation plate 33 can slide up and down along the inclined surface of the inclined wedge slider 32 when the inclined wedge slider 32 moves. Through the hinge with the triangular connecting plate 21, the state of the hook body 1 can be dynamically adjusted when it is shaken to ensure that it is level, so as to counteract the swaying. This realizes real-time monitoring and precise compensation of swaying during the hoisting process, thereby significantly improving the safety and stability of the operation.

[0029] like Figure 2 and Figure 3 As shown, in some embodiments, the linear motion component includes: a servo motor 5 fixed to the bottom of the triangular adapter plate 22, a moving groove 51 opened at the bottom of the fixed block 3, and a threaded rod 52 disposed inside the moving groove 51; the output end of the servo motor 5 is fixed to one end of the threaded rod 52, and a moving block 53 is threadedly connected to the side of the threaded rod 52, and the bottom of the moving block 53 is fixed to the top of the translation block 31.

[0030] It should be noted that the sides of the threaded rod 52 near both ends are rotatably connected to the inner side of the moving groove 51, and the width of the moving block 53 is the same as the width of the moving groove 51. When it is necessary to drive the translation block 31 to make linear motion, the servo motor 5 is started to precisely drive the threaded rod 52 at the output end to rotate inside the moving groove 51. This can drive the moving block 53, which is threadedly connected to the side of the threaded rod 52, to make linear motion along the side of the threaded rod 52. At the same time, since the width of the moving block 53 is the same as the width of the moving groove 51, it can limit the two sides of the moving block 53 during linear motion, thereby enabling the translation block 31 to make linear motion quickly and stably, thus improving the controllability and stability during angle compensation.

[0031] In some embodiments, the top of the translation block 31 is located at the bottom of the servo motor 5; when the translation block 31 is translated in the direction of the servo motor 5, since the top of the translation block 31 is located at the bottom of the servo motor 5, the translation block 31 can be translated to the bottom of the servo motor 5, thus avoiding the servo motor 5 blocking the translation direction.

[0032] In some embodiments, the bottom of the fixed block 3 is provided with a plurality of sliding grooves 6, and the top of the translation block 31 is fixed with a plurality of sliding strips 61. The top cross-sectional shape of the sliding strips 61 is T-shaped, and the top of the sliding strips 61 is slidably connected to the inner side of the sliding grooves 6.

[0033] It should be noted that the inner side of the slide groove 6 extends to both sides of the fixed block 3, and the number of slide grooves 6 and slide bars 61 is the same. When the translation block 31 moves linearly along the bottom of the fixed block 3, several slide bars 61 on the top of the translation block 31 will slide within several slide grooves 6. Since the top cross-sectional shape of the slide bar 61 is T-shaped, it can improve the load-bearing capacity of the translation block 31 and ensure the stability of its overall movement.

[0034] In some embodiments, a spherical bearing 7 is fixed to the bottom of the compensation slide plate 33, and the top of the triangular connecting plate 21 is coaxially connected and fixed to the inner side of the spherical bearing 7; the number of spherical bearings 7 is the same as the number and distribution angle of the angle compensation mechanism; by setting the spherical bearings 7, the stability of the structure can be guaranteed, and the triangular connecting plate 21 at the bottom can have a very high degree of spatial freedom.

[0035] like Figure 1 As shown, in some embodiments, a magnet 8 is fixed to the bottom of the bearing housing 2, and a safety lock 81 is hinged to one side of the hook body 1. The top of the safety lock 81 contacts the bottom of the magnet 8. With the magnet 8, when the hook body 1 approaches the sling, the magnet 8 can attract and correctly position the sling, and the safety lock 81 can attract the magnet 8, so that the sling is closed on the hook body 1, thereby improving the reliability of the lifting.

[0036] In some embodiments, a lifting ring 9 for connecting the crane and the anti-sway hook head is installed on the top of the triangular adapter plate 22; the lifting ring 9 facilitates the connection and use of the anti-sway hook head with the offshore crane.

[0037] In use, the lifting ring 9 is connected to the offshore crane. The sling is attracted and correctly positioned by the magnet 8. The safety lock 81 attracts the magnet 8, closing the sling onto the hook body 1. The controller 4 can set the anti-sway angle compensation threshold. During lifting operations, the angle sensor monitors the horizontal angle of the hook body 1 in real time and transmits the detected angle change data to the controller 4. When the angle value exceeds the angle compensation threshold, the controller 4 quickly uses a compensation algorithm to calculate the corresponding compensation direction and amount based on the current offset angle. It then controls the linear motion component in the corresponding angle compensation mechanism, activating the servo motor 5 to precisely drive the threaded rod 52 at the output end to rotate inside the moving groove 51. This drives the moving block 53, threaded to the side of the threaded rod 52, to move linearly along the side of the threaded rod 52. Simultaneously, due to the width of the moving block 53 and the moving groove 51... The width of the 1 is the same, which allows it to limit the two sides of the moving block 53 when it moves in a straight line. Several sliding strips 61 on the top of the translation block 31 will slide within several sliding grooves 6. Since the top cross-sectional shape of the sliding strip 61 is T-shaped, it can improve the load-bearing capacity of the translation block 31 and drive the translation block 31 to move in a straight line, so that it drives the inclined wedge slider 32 at the bottom of the translation block 31 to move synchronously. Since one side of the compensation plate 33 is slidably connected to the inclined surface of the inclined wedge slider 32, the compensation plate 33 can slide up and down along the inclined surface of the inclined wedge slider 32 when the inclined wedge slider 32 moves. Through the hinge with the triangular connecting plate 21, the state of the hook body 1 can be dynamically adjusted when it is shaken to ensure that it is level, so as to counteract the swaying. Real-time monitoring and precise compensation of swaying during the hoisting process are realized, thereby significantly improving the safety and stability of the operation.

[0038] Based on the above description and the preferred embodiments of this utility model, it will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-sway hook head for an offshore crane, characterized in that, include: The hook body (1), the bearing housing (2) installed at the top of the hook body (1), and the triangular connecting plate (21) and the triangular adapter plate (22) installed in sequence at the top of the bearing housing (2); Several angle compensation mechanisms are installed between the triangular connecting plate (21) and the triangular adapter plate (22). The angle compensation mechanism includes: a fixing block (3) fixed to the bottom of the triangular adapter plate (22), a translation block (31) set at the bottom of the fixing block (3), and a wedge slider (32) fixed to the bottom of the translation block (31); a compensation slide plate (33) is provided at the bottom of the wedge slider (32), and the top of the triangular connecting plate (21) is hinged to the compensation slide plate (33). A linear motion component for driving the translation block (31) to make precise translation is provided between the fixed block (3) and the translation block (31). A controller (4) for setting the angle compensation threshold and sending and receiving commands is provided on one side of the fixed block (3). An angle sensor for real-time monitoring of the horizontal angle of the hook body (1) is provided inside the controller (4).

2. The anti-sway hook head for a marine crane according to claim 1, characterized in that: The inclined surface of the wedge slider (32) faces the middle of the triangular connecting plate (21), one side of the compensation slide plate (33) is slidably connected to the inclined surface of the wedge slider (32), and the controller (4) is electrically connected to the angle sensor.

3. The anti-sway hook head for a marine crane according to claim 1, characterized in that: The linear motion assembly includes: a servo motor (5) fixed to the bottom of the triangular adapter plate (22), a moving groove (51) opened at the bottom of the fixed block (3), and a threaded rod (52) disposed inside the moving groove (51); the output end of the servo motor (5) is fixed to one end of the threaded rod (52), and a moving block (53) is threadedly connected to the side of the threaded rod (52), and the bottom of the moving block (53) is fixed to the top of the translation block (31).

4. The anti-sway hook head for an offshore crane according to claim 3, characterized in that: The threaded rod (52) is rotatably connected to the inner side of the moving groove (51) near both ends, and the width of the moving block (53) is the same as the width of the moving groove (51).

5. The anti-sway hook head for an offshore crane according to claim 3, characterized in that: The top of the translation block (31) is located at the bottom of the servo motor (5).

6. The anti-sway hook head for a marine crane according to claim 1, characterized in that: The bottom of the fixed block (3) is provided with several sliding grooves (6), and the top of the translation block (31) is fixed with several sliding strips (61). The top cross-sectional shape of the sliding strips (61) is T-shaped, and the top of the sliding strips (61) is slidably connected to the inner side of the sliding grooves (6).

7. The anti-sway hook head for a marine crane according to claim 6, characterized in that: The inner side of the groove (6) extends to both sides of the fixing block (3), and the number of the groove (6) is the same as the number of the slide bar (61).

8. The anti-sway hook head for a marine crane according to claim 1, characterized in that: The bottom of the compensation slide plate (33) is fixed with a spherical bearing (7), and the top of the triangular connecting plate (21) is coaxially connected and fixed to the inner side of the spherical bearing (7).

9. The anti-sway hook head for a marine crane according to claim 1, characterized in that: A magnet (8) is fixed to the bottom of the bearing housing (2), and a safety lock (81) is hinged to one side of the hook body (1). The top of the safety lock (81) is in contact with the bottom of the magnet (8).

10. The anti-sway hook head for a marine crane according to claim 1, characterized in that: The top of the triangular adapter plate (22) is equipped with a lifting ring (9) for connecting the crane to the anti-sway hook head.

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