Anti-swing hook of ship crane

Abstract

The utility model relates to a marine crane technical field especially is a kind of marine crane anti-swing lifting hook, including hoisting seat and hook body, the bottom of hoisting seat is fixedly connected with connecting branch, the bottom of connecting branch is fixedly connected with air resistance component, the lower portion of air resistance component is equipped with buffer assembly, hook body is located below buffer assembly, and the top of hook body is equipped with guide assembly, buffer assembly includes the buffer branch board of longitudinal symmetry and is located the bottom of air resistance component fixedly connected with the buffer branch board above, two buffer branch boards are fixedly connected with telescopic support between, and telescopic support is coaxially arranged with buffer branch board, in the utility model, guide assembly can effectively constrain the transverse movement of hook body and convert it into controllable longitudinal movement, again cooperate the double buffering structure absorption movement energy of buffer assembly and air resistance component, can greatly reduce the swing amplitude of hook body, avoid goods collision bulkhead or the risk of falling.

Description

Technical Field

[0001] This utility model relates to the field of marine crane technology, specifically to an anti-sway hook for marine cranes. Background Technology

[0002] Marine cranes are specialized lifting equipment installed on various types of ships to load, unload, and transfer cargo, equipment, or personnel. Their core function is to lift heavy objects between ships and docks, between ships, and to allocate materials within ships in marine or port environments. They are key equipment for ensuring the efficiency of ship operations and the advancement of maritime missions. In marine environments, marine crane hooks are prone to lateral swaying due to the lateral thrust generated by sea winds and the lateral inertial force caused by the ship's rolling. Traditional hooks rely solely on flexible slings, lacking lateral rigidity constraints and force conversion mechanisms. The lateral deformation of the slings can exacerbate the swaying, which can easily lead to cargo colliding with the bulkhead and being damaged, or falling due to shift in the center of gravity or sling detachment. This necessitates suspending operations, and manual intervention is ineffective and risky. Therefore, a marine crane anti-sway hook is proposed to address these issues. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-sway hook for marine cranes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A marine crane anti-sway hook includes a lifting seat and a hook body. A connecting support plate is fixedly connected to the bottom of the lifting seat, and an air resistance assembly is fixedly connected to the bottom of the connecting support plate. A buffer assembly is provided below the air resistance assembly. The hook body is located below the buffer assembly, and a guide assembly is provided at the top of the hook body. The buffer assembly includes longitudinally symmetrical buffer support plates. The upper buffer support plate is fixedly connected to the bottom of the air resistance assembly. A telescopic support rod is fixedly connected between the two buffer support plates, and the telescopic support rod is coaxially arranged with the buffer support plate. A buffer spring is provided on the outer side of the telescopic support rod. The two ends of the buffer spring are respectively fixedly connected to the adjacent buffer support plate, and the buffer spring is coaxially arranged with the buffer support plate.

[0005] As a further optimization of this utility model, the guide assembly includes a guide slide plate fixedly connected to the top of the hook body, a guide pillar with openings at the top and bottom is sleeved on the outer side of the guide slide plate, and multiple guide grooves arranged in a circumferential array are longitudinally opened on the inner side of the guide pillar.

[0006] As a further optimization of this utility model, the outer side of the guide slide plate is fixedly connected with a plurality of guide blocks arranged in a circular array. The guide blocks and the guide groove are equal in number, corresponding in position and matching in specifications. The guide slide plate is longitudinally slidably connected to the guide blocks and the guide groove.

[0007] As a further optimization of this utility model, a vertical rod is fixedly connected to the top center of the guide slide plate, and the top end of the vertical rod extends to the top of the guide support and is fixedly connected to the bottom of the buffer support plate located below.

[0008] As a further optimization of this utility model, the bottom of the connecting support plate is fixedly connected to a connecting bracket, the bottom end of the connecting bracket is fixedly connected to a fixing sleeve, and the fixing sleeve is fitted and fixed to the outside of the guide column.

[0009] As a further optimization of this utility model, the outer side of the buffer spring is provided with a telescopic cover, the upper and lower ends of the telescopic cover are respectively fixedly connected to the adjacent buffer support plate, and the telescopic cover and the buffer support plate are coaxially arranged.

[0010] As a further optimization of this utility model, the air resistance component includes a buffer airbag, one end of which is connected to a duckbill valve, and the other end of which is connected to an air supply tube. A rubber sealing plate is installed in the inner cavity of the buffer airbag through a mounting pin, and the rubber sealing plate covers the connection between the air supply tube and the buffer airbag.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the guide component can effectively constrain the lateral movement of the hook body and convert it into controllable longitudinal movement. Combined with the dual buffer structure of the buffer component and the air resistance component to absorb the kinetic energy, the swing amplitude of the hook body can be greatly reduced, avoiding the risk of cargo colliding with the bulkhead or falling. This not only ensures the safety of the lifting operation but also improves the efficiency of the operation, making it suitable for complex working conditions with frequent ocean winds and waves. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear structure of this utility model; Figure 3 This is an exploded view of the structure of this utility model; Figure 4 This is a cross-sectional view of the guide pillar of this utility model; Figure 5 This is a cross-sectional view of the telescopic baffle of this utility model; Figure 6 This is a cross-sectional view of the airbag of this utility model.

[0013] In the diagram: 1. Lifting seat; 2. Hook body; 3. Connecting support plate; 31. Connecting bracket; 32. Fixing sleeve; 4. Air resistance assembly; 41. Buffer airbag; 42. Duckbill valve; 43. Air supply pipe; 44. Rubber sealing plate; 5. Buffer assembly; 51. Buffer support plate; 52. Telescopic support rod; 53. Buffer spring; 54. Telescopic cover; 6. Guide assembly; 61. Guide slide plate; 62. Guide support column; 63. Guide groove; 64. Guide block; 65. Vertical rod. Detailed Implementation

[0014] 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.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A marine crane anti-sway hook includes a lifting seat 1 and a hook body 2. A connecting support plate 3 is fixedly connected to the bottom of the lifting seat 1. An air resistance assembly 4 is fixedly connected to the bottom of the connecting support plate 3. A buffer assembly 5 is provided below the air resistance assembly 4. The hook body 2 is located below the buffer assembly 5, and a guide assembly 6 is provided at the top of the hook body 2. The buffer assembly 5 includes buffer support plates 51 arranged longitudinally and symmetrically. The upper buffer support plate 51 is fixedly connected to the bottom of the air resistance assembly 4. A telescopic support rod 52 is fixedly connected between the two buffer support plates 51, and the telescopic support rod 52 is coaxially arranged with the buffer support plate 51. A buffer spring 53 is provided on the outer side of the telescopic support rod 52. The two ends of the buffer spring 53 are fixedly connected to the adjacent buffer support plate 51, and the buffer spring 53 is coaxially arranged with the buffer support plate 51.

[0017] It should be noted that: the hoisting seat 1 serves as the connecting carrier with the crane sling and is connected to the sling. The connecting support plate 3 welded to its bottom provides an installation base for the air resistance assembly 4, ensuring that the air resistance assembly 4 is rigidly connected to the hoisting seat 1 and preventing the assembly from shifting when shaking. The hook body 2 is used to hook the goods, and the guide assembly 6 on its top ensures that the hook body 2 only moves longitudinally when swinging and cannot deviate laterally. Furthermore: the buffer component 5 is the core unit for absorbing longitudinal motion energy. The longitudinally symmetrical buffer support plate 51 is connected to the air resistance component 4 and the guide component 6 respectively, forming a force transmission link of "guide-buffer-air resistance". The telescopic support rod 52 is coaxial with the buffer support plate 51, playing a guiding and positioning role, preventing the buffer spring 53 from shifting laterally when compressed or stretched. The buffer spring 53 is sleeved on the outside of the telescopic support rod 52. When the hook body 2 moves longitudinally due to the guide constraint, the buffer spring 53 absorbs the motion energy by compression or stretching, slowing down the longitudinal vibration of the hook body 2 and avoiding energy back transmission that causes secondary swinging. The air resistance component 4 and the buffer component 5 form a double buffer, further improving the energy absorption effect. The guide component 6 is responsible for converting the lateral swinging into longitudinal motion, providing the buffer component 5 with an object of action. The three work together to achieve the anti-sway function. As a further implementation of this solution, the guide assembly 6 includes a guide slide plate 61 fixedly connected to the top of the hook body 2. The guide slide plate 61 is fitted with a guide pillar 62 with openings at the top and bottom. The guide pillar 62 has multiple guide grooves 63 arranged in a circular array on its inner side. The guide slide plate 61 is fixedly connected to multiple guide blocks 64 arranged in a circular array on its outer side. The guide blocks 64 and guide grooves 63 are equal in number, corresponding in position, and matched in specifications. The guide slide plate 61 is longitudinally slidably connected to the guide grooves 63 through the guide blocks 64. A vertical rod 65 is fixedly connected to the top center of the guide slide plate 61. The top of the vertical rod 65 extends to the top of the guide pillar 62 and is fixedly connected to the bottom of the buffer support plate 51 located below. It should be noted that: the guide slide plate 61 is welded and fixed to the top of the hook body 2 and moves synchronously with the hook body 2. The guide pillar 62 sleeved on its outer side is fixed by the subsequent connecting bracket 31, providing a fixed constraint frame for the guide slide plate 61 to prevent it from shaking. The guide groove 63 on the inner side of the guide pillar 62 and the guide block 64 on the outer side of the guide slide plate 61 form a rigid constraint. Furthermore: When the hook body 2 swings laterally due to wind and waves, the lateral inertial force of the cargo will push the guide slide plate 61 to attempt to move laterally. However, the guide block 64 is restricted within the guide groove 63 and can only slide longitudinally along the guide groove 63. Therefore, the lateral force is decomposed into a longitudinal component along the tangent of the guide groove 63, forcing the guide slide plate 61 to drive the hook body 2 to move longitudinally. The vertical rod 65 connects the guide slide plate 61 and the lower buffer support plate 51, transmitting the longitudinal movement to the buffer assembly 5. When the guide slide plate 61 moves upward, the vertical rod 65 pushes the buffer support plate 51 to compress the buffer spring 53 and the air resistance assembly 4; when it moves downward, it pulls the buffer support plate 51 to stretch the buffer spring 53, thereby absorbing the longitudinal movement energy through the buffer assembly 5 and the air resistance assembly 4, achieving sway attenuation. As a further implementation of this scheme, a connecting bracket 31 is fixedly connected to the bottom of the connecting support plate 3, and a fixing sleeve 32 is fixedly connected to the bottom end of the connecting bracket 31. The fixing sleeve 32 is sleeved and fixed to the outside of the guide column 62. It should be noted that: one end of the connecting bracket 31 is welded to the bottom of the connecting support plate 3, and the other end is welded to the fixing sleeve 32, forming a rigid support link of "connecting support plate 3-connecting bracket 31-fixing sleeve 32", which fixes the guide column 62 and the hoisting seat 1 as a whole, so that the guide column 62 remains stable when the hook body 2 swings, and avoids the failure of the constraint of the guide groove 63 and the guide block 64 due to the shaking of the guide column 62. The fixing sleeve 32 is fixed to the guide column 62. The advantage of this fixing structure is that when the hook body 2 swings laterally and generates a large impact force, the connecting bracket 31 and the fixing sleeve 32 can ensure that the guide column 62 does not shift or deform, thus providing a guarantee for the stable constraint of the guide assembly 6. As a further implementation of this solution, a telescopic cover 54 is provided on the outside of the buffer spring 53. The upper and lower ends of the telescopic cover 54 are fixedly connected to the adjacent buffer support plate 51, and the telescopic cover 54 and the buffer support plate 51 are coaxially arranged. It should be noted that the telescopic shield 54 is corrugated and can extend and retract synchronously with the relative movement of the buffer support plate 51. Its upper and lower ends are fixed to the buffer support plate 51 to form a closed space, which completely encloses the buffer spring 53 and the telescopic support rod 52. In the marine lifting environment, the salt spray concentration is high and the seawater splashes frequently. If the buffer spring 53 is exposed, it is easy to rust due to salt spray corrosion, which will lead to a decrease in the stiffness of the buffer spring 53 and the extension and retraction jamming, affecting the buffering effect. At the same time, dust and impurities may also enter the gap between the buffer spring 53 and the telescopic support rod 52, which will aggravate wear. The telescopic shield 54 can effectively block the entry of salt spray, seawater and dust, and prevent the buffer spring 53 from rusting and wearing. Its corrugated structure design ensures smooth extension and retraction without jamming, and does not affect the energy absorption effect of the buffer component 5. As a further implementation of this solution, the air resistance assembly 4 includes a buffer airbag 41, one end of which is connected to a duckbill valve 42, and the other end of which is connected to an air supply tube 43. A rubber sealing plate 44 is installed in the inner cavity of the buffer airbag 41 through a mounting pin, and the rubber sealing plate 44 covers the connection between the air supply tube 43 and the buffer airbag 41. It should be noted that: the top of the buffer airbag 41 is fixed to the bottom of the connecting support plate 3, and the bottom is fixed to the upper buffer support plate 51. When the buffer support plate 51 moves upward, the buffer airbag 41 is compressed and the internal gas is pressurized. When it moves downward, the buffer airbag 41 expands and a negative pressure is formed inside. When the buffer airbag 41 is compressed, the internal gas pressure increases and opens the duckbill valve 42 (one-way valve structure). The gas is slowly discharged from the duckbill valve 42. During the discharge process, the friction between the gas and the valve port and the airflow damping will generate an energy dissipation effect, slowing down the rising speed of the buffer support plate 51 and avoiding excessive impact force. When the buffer airbag 41 expands, a negative pressure is formed inside. Outside air enters the airbag through the air supply pipe 43, opening the rubber sealing plate 44, to prepare for the next compression and energy storage. The one-way sealing effect of the rubber sealing plate 44 can prevent gas from leaking from the air supply pipe 43 when the buffer airbag 41 expands, ensuring that the buffer airbag 41 can expand normally. Furthermore, a dust filter can be installed at the end of the air supply pipe 43 to prevent dust from entering the buffer airbag 41, thus avoiding clogging of the air supply pipe 43 or wear of the rubber sealing plate 44. The exhaust rate of the duckbill valve 42 can be adjusted by the valve port size to adapt to the buffering needs of goods of different weights, further enhancing the adaptability of the air resistance component 4.

[0018] Work process: When encountering ocean waves, the cargo generates lateral inertial force, which pushes the hook body 2 to swing laterally. At this time, the guide assembly 6 plays a restraining role: the guide slide plate 61 attempts to move laterally synchronously with the hook body 2, but the guide block 64 is restricted in the guide groove 63 of the guide support 62 and can only slide longitudinally along the groove. The lateral force is decomposed into a longitudinal component along the tangent direction of the guide groove 63, which forces the guide slide plate 61 to drive the hook body 2 to move longitudinally. If the guide slide plate 61 moves upward, it pushes the lower buffer support plate 51 to move upward through the vertical rod 65, compressing the buffer spring 53. The buffer spring 53 absorbs the longitudinal motion energy through elastic deformation, slowing down the upward speed of the hook body 2. If the guide slide plate 61 moves downward, it pulls the lower buffer support plate 51 to move downward, causing the buffer spring 53 to stretch. Similarly, it absorbs energy through deformation, suppressing the downward impact of the hook body 2. When the buffer support plate 51 moves upward, it simultaneously compresses the buffer airbag 41. The gas pressure inside the buffer airbag 41 increases and opens the duckbill valve 42. Gas is slowly discharged from the valve port. The friction between the gas and the valve port and the airflow damping generate additional energy consumption, further slowing down the upward speed of the buffer support plate 51 and preventing the buffer spring 53 from rebounding quickly and causing secondary vibration. When the buffer support plate 51 moves downward, the buffer airbag 41 expands to form a negative pressure. Outside air enters the airbag through the air supply pipe 43, opening the rubber sealing plate 44 to store energy for the next compression. The rubber sealing plate 44 can prevent gas leakage when the airbag expands and ensure smooth air supply. It is worth noting that the dual buffering and reset capabilities of the buffer assembly 5 and the air resistance assembly 4 can significantly reduce the longitudinal movement amplitude of the hook body 2, that is, reduce the swing amplitude of the hook body 2.

[0019] 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 sway-resistant hook for a marine crane, comprising a lifting seat (1) and a hook body (2), characterized in that: The bottom of the hoisting seat (1) is fixedly connected to a connecting support plate (3), the bottom of the connecting support plate (3) is fixedly connected to an air resistance component (4), a buffer component (5) is provided below the air resistance component (4), the hook body (2) is located below the buffer component (5), and a guide component (6) is provided at the top of the hook body (2). The buffer assembly (5) includes buffer support plates (51) arranged symmetrically in the longitudinal direction. The upper buffer support plate (51) is fixedly connected to the bottom of the air resistance assembly (4). A telescopic support rod (52) is fixedly connected between the two buffer support plates (51), and the telescopic support rod (52) is coaxially arranged with the buffer support plate (51). A buffer spring (53) is provided on the outside of the telescopic support rod (52). The two ends of the buffer spring (53) are fixedly connected to the adjacent buffer support plate (51) respectively, and the buffer spring (53) is coaxially arranged with the buffer support plate (51).

2. The anti-sway hook for a marine crane according to claim 1, characterized in that: The guide assembly (6) includes a guide slide plate (61) fixedly connected to the top of the hook body (2). The guide slide plate (61) is fitted with a guide pillar (62) with openings at the top and bottom. The guide pillar (62) has a plurality of guide grooves (63) arranged in a circular array on the inner side.

3. The anti-sway hook for a marine crane according to claim 2, characterized in that: The outer side of the guide slide plate (61) is fixedly connected with a plurality of guide blocks (64) arranged in a circular array. The guide blocks (64) and the guide groove (63) are equal in number, corresponding in position and matching in specifications. The guide slide plate (61) is longitudinally slidably connected to the guide groove (63) through the guide blocks (64).

4. The anti-sway hook for a marine crane according to claim 2, characterized in that: A vertical rod (65) is fixedly connected to the top center of the guide slide plate (61). The top of the vertical rod (65) extends to the top of the guide support (62) and is fixedly connected to the bottom of the buffer support plate (51) located below.

5. The anti-sway hook for a marine crane according to claim 2, characterized in that: The bottom of the connecting support plate (3) is fixedly connected to a connecting bracket (31), and the bottom end of the connecting bracket (31) is fixedly connected to a fixing sleeve (32). The fixing sleeve (32) is sleeved and fixed to the outside of the guide pillar (62).

6. The anti-sway hook for a marine crane according to claim 1, characterized in that: The buffer spring (53) is provided with a telescopic cover (54) on its outer side. The upper and lower ends of the telescopic cover (54) are respectively fixedly connected to the adjacent buffer support plate (51), and the telescopic cover (54) and the buffer support plate (51) are coaxially arranged.

7. The anti-sway hook for a marine crane according to claim 1, characterized in that: The air resistance assembly (4) includes a buffer airbag (41), one end of which is connected to a duckbill valve (42), and the other end of which is connected to an air supply tube (43). A rubber sealing plate (44) is installed in the inner cavity of the buffer airbag (41) through a mounting pin, and the rubber sealing plate (44) covers the connection between the air supply tube (43) and the buffer airbag (41).

Images