Marine floating ball gripping device

Abstract

This utility model discloses a marine buoy grabbing device. The grabbing device (1) includes a shell (11), a lifting drive mechanism (16), and a central lifting component (17). The lifting drive mechanism and the central lifting component are installed inside the shell. The lifting drive mechanism is used to drive the central lifting component to move up and down. The grabbing device also includes several corresponding grabbing rods (12), limiting brackets (13), and inner connecting rods (15). The limiting brackets are installed on the circumferential surface of the shell. The lower end of the grabbing rod is connected to the limiting bracket through a pin hinge mechanism. One end of the inner connecting rod is connected to the central lifting component through a pin hinge mechanism, and the other end of the inner connecting rod is connected to the grabbing rod through a pin hinge mechanism. The grabbing device of this utility model can grab the buoy device (2) on the sea surface and transfer it to the ship without manual intervention, reducing labor costs and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to a mechanical grasping device, and more particularly to a marine buoy grasping device. Background Technology

[0002] A trailing suction hopper dredger is a self-propelled dredger with its own mud hopper, capable of suction while moving. During operation, the stern lowers the drag bar to pull in seabed mud and water into the hopper. Once fully loaded, it sails to the dumping area or reclamation area, where it discharges the mud via bow dredging or bottom dredging. Due to its high maneuverability and continuous operation, it is widely used in port and waterway maintenance and land reclamation.

[0003] During the construction of trailing suction hopper dredgers, a core piece of equipment called a floating pipe is required. The floating pipe, also known as a "floating sludge discharge pipeline," has floats on its outer side, allowing the entire pipeline to suspend on the water surface. One end of the floating pipe connects to the dredger's discharge port (bow blow or side blow), and the other end extends to the reclamation area or the shore, used to continuously transport sludge from the hopper to a designated location. The process of connecting the floating pipe to the dredger's discharge port is referred to as "bow blow connection."

[0004] The end of the floating pipe is connected to a buoy by a rope. When the bow blowdown pipe is installed, the buoy needs to be retrieved onto the trailing suction hopper dredger, and then the rope is pulled to pull the floating pipe to complete the bow blowdown pipe installation.

[0005] The current problem is:

[0006] Currently, there are no dedicated devices for retrieving buoys. The current method is manual retrieval: crew members use long poles to hook the buoy from the sea onto a transport vessel, then transport the buoy to the side of a trailing suction hopper dredger, where the dredger's winch lifts the buoy onto the vessel, thus achieving the goal of "transferring the buoy from the sea to the trailing suction hopper dredger." This method is labor-intensive and inefficient. Summary of the Invention

[0007] The purpose of this invention is to provide a marine buoy grabbing device, which can quickly and conveniently grab buoys from the sea surface onto a trailing suction hopper dredger.

[0008] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0009] A marine buoy grabbing device includes a shell, a lifting drive mechanism, and a central lifting component. The lifting drive mechanism and the central lifting component are installed inside the shell. The lifting drive mechanism drives the central lifting component to move up and down. The grabbing device also includes a plurality of corresponding grab rods, limiting brackets, and inner connecting rods. The limiting brackets are installed on the circumference of the shell. The lower end of each grab rod is connected to the limiting bracket via a pin hinge mechanism. One end of each inner connecting rod is connected to the central lifting component via a pin hinge mechanism, and the other end of each inner connecting rod is connected to the grab rod via a pin hinge mechanism.

[0010] A marine buoy grabbing device includes a shell, a lifting drive mechanism, and a central lifting component. The lifting drive mechanism and the central lifting component are installed inside the shell. The lifting drive mechanism drives the central lifting component to move up and down. The grabbing device also includes a plurality of corresponding grab rods, limiting brackets, external connecting rods, and internal connecting rods. The limiting brackets are installed on the circumference of the shell. The lower ends of the grab rods are connected to the limiting brackets via a pin hinge mechanism. The external connecting rods are fixedly installed in the middle of the grab rods. One end of the internal connecting rod is connected to the central lifting component via a pin hinge mechanism, and the other end of the internal connecting rod is connected to the external connecting rod via a pin hinge mechanism.

[0011] Furthermore, the lifting drive mechanism is used to drive the central lifting component to perform up and down lifting actions. Its specific structural form is as follows: the lifting drive mechanism includes a screw lifting mechanism and a motor. The screw lifting mechanism includes a lifting platform, a screw, and a slide. The screw is mounted on the lifting platform through bearings and is in a vertical state. The slide is assembled with the screw. A guide mechanism is provided between the slide and the lifting platform. The motor drives the screw to rotate. The central lifting component is installed based on the slide of the screw lifting mechanism.

[0012] Furthermore, the motor is a stepper motor.

[0013] Furthermore, one end of the inner connecting rod is assembled and connected to the central lifting component through a pivot pin hinge mechanism. The specific structural form is as follows: the central lifting component has several spokes to correspond to several gripping rods. All spokes extend outward in a radial pattern, and the outwardly extending ends of the spokes are assembled and connected to one end of the inner connecting rod through a pivot pin hinge mechanism.

[0014] Furthermore, the lower end of the gripper is assembled and connected to the limiting bracket via a pivot pin hinge mechanism. The specific structural form is as follows: the limiting bracket includes a limiting base and a movable base. A vertical slide hole is provided on the limiting base, and a slider is provided at the bottom of the movable base. The limiting base is installed on the circumferential surface of the housing, and the slider of the movable base is embedded in the slide hole of the limiting base. The lower end of the gripper is assembled with the movable base via a pivot pin hinge mechanism.

[0015] Furthermore, a lifting ring is provided at the top of the housing.

[0016] Furthermore, the gripping device includes three sets of corresponding gripping rods, limiting brackets, and inner connecting rods.

[0017] Furthermore, the gripping device also includes a remote control drive module, which provides power and remote control signals for the operation of the lifting drive mechanism.

[0018] Compared with the prior art, the advantages of this utility model's marine buoy grabbing device are as follows:

[0019] It achieves the goal of "grabbing the buoy device on the sea surface and transferring it to the ship", solving the problem in the existing technology that "manual salvage is required to transfer the buoy device on the sea surface to the ship". It eliminates the need for human intervention, reduces labor costs, and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the marine buoy grabbing device of this utility model;

[0021] Figure 2 This is a schematic diagram of the housing in the gripping device of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal mechanism of the gripping device of this utility model;

[0023] Figure 4 This is a schematic diagram of the limiting bracket in the gripping device of this utility model;

[0024] Figure 5 This is a schematic diagram of the lifting drive mechanism in the gripping device of this utility model;

[0025] Figure 6 This is a schematic diagram of the central lifting component in the gripping device of this utility model;

[0026] Figure 7 This is a schematic diagram of a device for grasping a float using the grasping device of this utility model. Detailed Implementation

[0027] The specific embodiments of this utility model are further described below:

[0028] This embodiment provides a marine buoy grabbing device for grabbing buoys on the sea surface.

[0029] See Figure 1 and Figure 2 The gripping device 1 of this embodiment includes a housing 11, which is generally hexagonal prism in shape. All other components of the gripping device 1 are mounted on the housing 11.

[0030] The gripping device 1 of this embodiment further includes three gripping rods 12, and three limiting brackets 13 are correspondingly configured for each of the three gripping rods 12. For each gripping rod 12, one end of the gripping rod 12 is mounted on the circumferential surface of the housing 11 through the limiting bracket 13, and the other end of the gripping rod 12 is in a free state and faces upward. The three gripping rods 12 are evenly and discretely arranged on the circumferential surface of the housing 11, and the included angle between two adjacent gripping rods 12 is 120 degrees.

[0031] The previously mentioned "one end of the grab rod 12 is mounted on the circumferential surface of the housing 11 via the limiting bracket 13" specifically refers to...

[0032] See Figure 4 The limiting bracket 13 is mainly composed of a limiting base 131 and a movable seat 132. The limiting base 131 has a vertical slide hole 133. A slider is provided at the bottom of the movable seat 132. The limiting base 131 is mounted on the circumferential surface of the housing 11, and the slider of the movable seat 132 is embedded in the slide hole 133 of the limiting base 131 (e.g., ...). Figure 3 (as indicated by the middle arrow A), thus assembling it together with the limiting base 131 to form the main structure of the limiting bracket 13.

[0033] The lower end of the gripping rod 12 is assembled with the movable seat 132 by means of a pivot pin. In this way, the lower end of the gripping rod 12 can make a small vertical movement up and down, and the gripping rod 12 can also make a vertical rotation (swing) movement based on the movable seat 132.

[0034] With the support of the limiting bracket 13, the gripping rods 12 can swing up and down based on the housing 11. When all the gripping rods 12 swing downward, all the gripping rods 12 are in an outward-expanding state. When all the gripping rods 12 swing upward, all the gripping rods 12 are in an inward-retracting state.

[0035] It should be noted that a bracket mounting hole 112 is provided on the housing 11. This bracket mounting hole 112 is specifically used to install the limiting bracket 13, and the limiting bracket 13 is installed at the bracket mounting hole 112.

[0036] On the housing 11, a through hole 111 is provided for each grab bar 12, and the through hole 111 is provided above the position of the "limiting bracket 13".

[0037] Inside the housing 11 is a mechanism that controls the gripping rods 12 to unfold and retract. This mechanism has three external rods 14 extending from three rod holes 111. The three external rods 14 are respectively connected to the three gripping rods 12. The mechanism inside the housing 11 controls the unfolding and retracting of the gripping rods 12 through the three external rods 14.

[0038] More specifically,

[0039] See Figure 3 The main mechanisms inside the housing 11 include a lifting drive mechanism 16 and a central lifting component 17.

[0040] See Figure 5 The lifting drive mechanism 16 mainly includes a lead screw lifting mechanism 162 and a motor 161. Both are existing technology devices and are installed based on the housing 11.

[0041] Those skilled in the art will understand that the lead screw lifting mechanism 162 is mainly composed of a lifting platform 1621, a lead screw 1622, and a slide 1623. The lead screw 1622 is mounted on the lifting platform 1621 via bearings and is in a vertical position. The slide 1623 is assembled with the lead screw 1622. A guide mechanism 1624 is also provided between the slide 1623 and the lifting platform 1621 to ensure the stability of the lifting movement of the slide 1623. The motor 161 is used to drive the lead screw 1622 to rotate (forward or reverse), thereby driving the slide 1623 to perform rising and falling movements.

[0042] See Figure 5 and Figure 6 The central lifting component 17 has a base 172, which is mounted on the slide 1623 of the lead screw lifting mechanism 162. This allows the lifting drive mechanism 16 to drive the central lifting component 17 to move up and down. The central lifting component 17 also has three spokes 171, each corresponding to one of the three gripping rods 12. These spokes extend radially outwards, with their ends facing the gripping rods 12. Each spoke 171 has a pivot pin hinge mechanism at its end. Furthermore, each spoke 171 of the central lifting component 17 is equipped with an inner connecting rod 15. One end of the inner connecting rod 15 is connected to the outer end of the spoke 171 via a pivot pin hinge mechanism, and the other end is also connected to the outer connecting rod 14 mounted on the gripping rod 12 via a pivot pin hinge mechanism.

[0043] It should be noted that the external rod 14 can be regarded as part of the gripping rod 12, so as to extend into the housing 11 and be assembled and connected with the inner connecting rod 15.

[0044] In addition, a lifting ring 113 is provided on the top of the housing 11 to facilitate the overall lifting and gripping of the grabbing device 1.

[0045] In this embodiment, the gripping device 1 is also equipped with a dedicated remote control drive module (not shown in the figure) for the lifting drive mechanism 16. The remote control drive module is equipped with a lithium battery sub-module and a remote control signal receiving sub-module. The lithium battery sub-module is used to supply power to the motor 161, and the remote control signal receiving sub-module is used to receive external remote control signals (issued from the remote control equipment configured on the trailing suction hopper dredger) to control the operation of the motor 161 (including controlling forward and reverse rotation and the number of rotations), thereby controlling the gripping rod 12 to perform the unfolding and retracting action.

[0046] See Figure 7 The grabbing device 1 in this embodiment is used to grab the buoy device 2 floating on the sea surface and lift the buoy device 2 onto the ship. Its usage method and working principle are as follows:

[0047] The winch hook on the trailing suction hopper dredger hooks onto the lifting ring 113 on the grabbing device 1, and the grabbing device 1 is lowered to the sea surface and further lowered to the inside of the buoy device 2. Then, the central lifting component 17 is controlled to rise, and the grabbing rod 12 is driven to unfold by changing the angle of the inner connecting rod 15. The unfolded grabbing rod 12 can hook onto the buoy device 2, thereby grabbing the buoy device 2. Then, the grabbing device 1 is raised, and the grabbing device 1, holding the buoy device 2, rises together until it reaches the ship. Then, the central lifting component 17 is controlled to descend, and the grabbing rod 12 is driven to retract by changing the angle of the inner connecting rod 15. The retracted grabbing rod 12 no longer grabs the buoy device 2.

[0048] The grabbing device 1 of this embodiment is specifically designed for "grabbing the buoy device 2 on the sea surface", thereby achieving the goal of "grabbing the buoy device 2 on the sea surface onto the trailing suction hopper dredger" and solving the problem in the prior art that "manual salvage is required to transfer the buoy device on the sea surface to the ship", without the need for manual intervention.

[0049] It should be noted that, in this embodiment, the motor 161 is a stepper motor, so as to accurately control the extension and retraction range of the gripping rod 12.

[0050] In other embodiments, the number of gripping rods 12 and limiting brackets 13 can be set according to actual needs, and this utility model does not limit this.

[0051] The gripping device of this embodiment has the following advantages:

[0052] 1) Simple structure, easy operation, and good practicality;

[0053] 2) Improved the docking efficiency and safety of the winch cable and the float device 2 of the trailing suction hopper dredger;

[0054] 3) The motor-mechanical transmission method used in the gripping device is more reliable than the winch motor-rope transmission method and will not cause the cable jamming problem.

[0055] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A device for grabbing marine buoys, characterized in that: The gripping device (1) includes a housing (11), a lifting drive mechanism (16) and a central lifting component (17). The lifting drive mechanism (16) and the central lifting component (17) are installed inside the housing (11). The lifting drive mechanism (16) is used to drive the central lifting component (17) to perform up and down lifting actions. The gripping device (1) also includes several corresponding gripping rods (12), limiting brackets (13) and inner connecting rods (15). The limiting brackets (13) are installed on the circumferential surface of the housing (11). The lower end of the gripping rod (12) is assembled and connected to the limiting bracket (13) through a pin hinge mechanism. One end of the inner connecting rod (15) is assembled and connected to the central lifting component (17) through a pin hinge mechanism. The other end of the inner connecting rod (15) is assembled and connected to the gripping rod (12) through a pin hinge mechanism.

2. A device for grabbing marine buoys, characterized in that: The gripping device (1) includes a housing (11), a lifting drive mechanism (16) and a central lifting component (17). The lifting drive mechanism (16) and the central lifting component (17) are installed inside the housing (11). The lifting drive mechanism (16) is used to drive the central lifting component (17) to perform up and down lifting actions. The gripping device (1) also includes several corresponding gripping rods (12), limiting brackets (13), external rods (14) and internal connecting rods (15). The limiting brackets (13) are installed on the circumferential surface of the housing (11). The lower end of the gripping rod (12) is connected to the limiting bracket (13) through a pin hinge mechanism. The external rod (14) is fixedly installed in the middle of the gripping rod (12). One end of the internal connecting rod (15) is connected to the central lifting component (17) through a pin hinge mechanism. The other end of the internal connecting rod (15) is connected to the external rod (14) through a pin hinge mechanism.

3. The marine buoy grabbing device according to claim 2, characterized in that: The lifting drive mechanism (16) is used to drive the central lifting component (17) to move up and down. Its specific structural form is as follows: The lifting drive mechanism (16) includes a screw lifting mechanism (162) and a motor (161). The screw lifting mechanism (162) includes a lifting platform (1621), a screw (1622), and a slide (1623). The screw (1622) is mounted on the lifting platform (1621) by bearings and is in a vertical position. The slide (1623) is assembled with the screw (1622). A guide mechanism (1624) is provided between the slide (1623) and the lifting platform (1621). The motor (161) drives the screw (1622) to rotate. The central lifting component (17) is installed on the slide (1623) of the screw lifting mechanism (162).

4. The marine buoy grabbing device according to claim 3, characterized in that: The motor (161) is a stepper motor.

5. The marine buoy grabbing device according to claim 2, characterized in that: One end of the inner connecting rod (15) is assembled and connected to the central lifting component (17) through a pivot pin hinge mechanism. The specific structural form of the implementation is as follows: The central lifting component (17) has several spokes (171) corresponding to several grippers (12). All spokes (171) extend outward in a radial pattern. The outwardly extending ends of the spokes (171) are connected to one end of the inner connecting rod (15) through a pivot pin hinge mechanism.

6. The marine buoy grabbing device according to claim 2, characterized in that: The lower end of the grab rod (12) is assembled and connected to the limiting bracket (13) through a pivot pin hinge mechanism, and its specific structural form is as follows: The limiting bracket (13) includes a limiting base (131) and a movable seat (132). A vertical slide hole (133) is provided on the limiting base (131). A slider is provided at the bottom of the movable seat (132). The limiting base (131) is installed on the circumferential surface of the housing (11). The slider of the movable seat (132) is embedded in the slide hole (133) of the limiting base (131). The lower end of the gripper (12) is assembled with the movable seat (132) through a pivot hinge mechanism.

7. The marine buoy grabbing device according to claim 2, characterized in that: The top of the housing (11) is provided with a lifting ring (113).

8. The marine buoy grabbing device according to claim 2, characterized in that: The gripping device (1) includes three sets of corresponding gripping rods (12), limiting brackets (13) and inner connecting rods (15).

9. The marine buoy grabbing device according to claim 2, characterized in that: The gripping device (1) also includes a remote control drive module, which provides power and remote control signals for the operation of the lifting drive mechanism (16).

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