Safe and convenient type recovery method for recovering unmanned ship through suspension arm net rope

Abstract

The invention relates to a safe and convenient recovery method for recovering an unmanned ship through a suspension arm net rope, belongs to the technical application of recovering the unmanned ship from the sea surface to a mother ship deck in a mother ship hoisting mode, and can solve the problems of safety and convenience of traditional unmanned ship recovery. The method specifically comprises the steps that when the unmanned ship with a plurality of hooks capable of being retracted and released can go down the sea to work and needs to be retracted after work is finished, when an unmanned ship driver on a mother ship can control a remote controller, the unmanned ship and the mother ship run in the same direction, a suspension arm net rope on the mother ship can move to the port side or the starboard side of the mother ship in advance, and the unmanned ship is accelerated at the proper time; therefore, the hook can be automatically hung on the mesh of the net rope, and the unmanned ship can be safely and conveniently recovered to the deck of the mother ship. According to the method, the traditional step of manually getting on the boat and manually hooking is replaced, and the safety and convenience of recycling the unmanned boat are improved.

Description

Technical Field

[0001] The present invention relates to a technical application of a mother ship using a hoisting method to recover an unmanned boat from the sea surface to the mother ship deck, and specifically relates to a recovery method for a civilian scientific research vessel using an existing crane net rope on board to recover the unmanned boat. Background Art

[0002] At present, some scientific research vessels will have an integrated lifting boom, on which a load-bearing net rope will be arranged, which is usually used for lifting and carrying heavy cargo boxes and other handling tasks. The recovery of unmanned boats from the sea surface to the deck of the mother ship is an important part of the scientific research ship's mission, and it is widely used. Most of the unmanned boat recovery methods at home and abroad are relatively unsafe and time-consuming and labor-intensive. With the increasing practical application of civilian scientific research ships, the safety and convenience of unmanned boat recovery methods in the future will be increasingly valued. The unmanned boat recovery method this time uses an inverted hook device installed on the unmanned boat. During recovery, the unmanned boat travels in the same direction as the mother ship and travels slightly faster than the mother ship to rush towards the net rope. The net rope will automatically and accurately hang on the hook, and then the unmanned boat can be successfully recovered by pulling the net rope.

[0003] According to the current industry situation, the existing method of recovering unmanned boats is for workers to manually hang the hook on the net rope on the unmanned boat, and then pull the net rope to recover the unmanned boat. From the perspective of safety and ease of operation, this recovery method is difficult to be used for timely and safe recovery of unmanned boats.

[0004] Compared with the above status quo, the recovery method involved in the present invention is safer, more reliable, and saves time and effort. The reversible retractable device of the present invention consists of two parts: a hull surrounding reinforcement frame and an invertible hook device. The recovery lifting equipment is the existing boom net rope of the mother ship. The recovery device uses the three existing stress points of the unmanned boat to make a set of steel structure frames as the installation base of the invertible hook device. The shape of the frame structure almost matches the hull of the unmanned boat. Then, a set of invertible hook devices is customized to be bolted to the hull surrounding reinforcement frame, and the hook device is made invertible by disassembling and assembling the diagonal brace. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a safe and convenient method for recovering an unmanned boat by using a boom net rope, wherein the hook of the unmanned boat's retractable device has excellent compatibility with the boom net rope, and the net rope can be automatically and accurately hooked.

[0006] The present invention solves the technical problem by adopting the following technical solutions:

[0007] The method for recovering an unmanned boat by using a boom net rope provided by the present invention comprises the following steps:

[0008] (1) Production of retractable device:

[0009] The reversible retractable device consists of a hull surrounding reinforcement frame and an inverted hook device. Since three load-bearing lifting points were originally embedded on the unmanned boat, it is necessary to use the existing three load-bearing lifting points. First, a set of hull surrounding reinforcement frames is made as the base of the inverted hook device. The base is made of channel steel bent and welded into a base frame. The front lifting point is connected to the unmanned boat through a pin shaft using a customized lifting lug, and the rear lifting point is connected to the unmanned boat through a bolt using a customized flange interface, and the installation interface of the inverted hook device is welded at a suitable position on the base. Then the inverted hook device is manufactured. The inverted hook device consists of two parts, the upper part is assembled and welded with a steel pipe as the installation frame of the hook, and the steel pipe is partially reinforced and threaded holes are processed to facilitate the assembly of the hook. The lower part is a base flange connected to the hull surrounding reinforcement frame. The base is designed with a T-tube sleeve shaft, which can not only make the hook device adjustable in height up and down, but also make the hook device rotate around the axis. Since the length span of the hull surrounding reinforcement frame is relatively large, in order to ensure the reliable rigidity of the hull surrounding reinforcement frame during the pulling force process, a sling is specially used to half-enclose the hull from the bottom of the unmanned boat hull and fix the two ends of the sling to the hull surrounding reinforcement frame.

[0010] (2) Recovery method of unmanned boat with retractable device using crane net rope:

[0011] After the structural assembly is completed, the retractable device on the unmanned boat is installed. After the unmanned boat is put into the sea, the unmanned boat driver standing on the mother ship can operate the remote control to make the unmanned boat move in the same direction as the mother ship, and rush towards the crane net rope at a speed slightly faster than the mother ship. The net rope contacts the retractable hook device, and the hook on the device will randomly hang on the net rope mesh. Then the crane operator controls the crane arm to lift the net rope, and the unmanned boat is recovered to the mother ship together.

[0012] Compared with the prior art, the present invention has the following main advantages and beneficial effects:

[0013] 1. For the first time, a rigid retracting and launching device is installed on the unmanned boat, which can eliminate the step of manually getting on the boat and hooking it, thus reducing personal safety and greatly improving the safety of recovering the unmanned boat.

[0014] 2. The unmanned boat rushes towards the boom net rope, which can automatically and accurately hang the net rope on the hook, making the work of recovering the unmanned boat more convenient and greatly improving the work efficiency of recovering the unmanned boat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the crane net rope recovery method for unmanned boats

[0016] In the figure: 1-unmanned boat, 2-inverted hook device, 3-hull surrounding reinforcement frame, 4-reinforced sling, 5-jib net rope.

[0017] Figure 2for Figure 1 Side view DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with implementation examples, but the content of the present invention is not limited to the following implementation examples.

[0019] As attached Figure 1 As shown, a safe and convenient method for recovering an unmanned boat by using a boom net rope comprises: an unmanned boat, an inverted hook device, a hull surrounding reinforcement frame, a reinforcement sling, and a boom net rope. The fasteners comprise: a pin, a cotter pin, a hexagonal bolt, a hexagonal nut, a flat washer, and an elastic washer.

[0020] Step 1: During construction, first hoist the hull reinforcement frame 3 to the top of the unmanned boat 1, and use hexagonal bolts to lock the unmanned boat 3 and the rear lifting point of the hull reinforcement frame 3, then adjust the front lifting ear of the hull reinforcement frame to align with the front lifting point of the unmanned boat and connect them with a pin and a split pin. Finally, hoist the inverted hook device 2 to the top of the hull reinforcement frame 3, align the flange interfaces of the two and lock them with hexagonal bolts, and the assembly of the inverted retractable device installed on the unmanned boat 1 is completed.

[0021] Step 2: After the installation is completed, the unmanned boat with several hooks and retractable devices can go to sea for operation. When the operation is completed and it needs to be recovered, the unmanned boat driver on the mother ship can control the remote control to make the unmanned boat move in the same direction as the mother ship. The boom net rope on the mother ship will move to the port or starboard side of the mother ship in advance, and wait for the right time to accelerate the unmanned boat, so that it rushes towards the boom net rope at a speed slightly greater than the mother ship, so that the hook can be automatically hung in the mesh of the net rope, and the unmanned boat can be safely and conveniently recovered to the deck of the mother ship.

[0022] The success rate of the net lifting method obtained in the above example was tested under various working conditions, and the test results are shown in Table 1.

[0023] Table 1

[0024] Number of hooks and serial number 4 (2,3,5,6) 3 (2,4,6) 2 (2,6) Success rate of network lifting 100％ 100％ 100％ The boat is tilted No tilt No tilt No tilt

[0025] Note: Hook number definition: Looking from the bow, from left to right, they are 1 to 7.

[0026] The above described embodiments are only used to explain the present invention and are not used to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A safe and convenient method for recovering an unmanned boat by using a boom net rope, comprising: An unmanned boat (1), an inverted hook device (2), a hull surrounding reinforcement frame (3), a reinforcement sling (4), and a boom net rope (5). The fasteners include: a pin, a cotter pin, a hexagonal bolt, a hexagonal nut, a flat washer, and an elastic washer. The method is characterized by comprising the following steps: (1) Recovery method of unmanned boat with retractable device by crane net rope: After the structural assembly is completed, the reversible and retractable device on the unmanned boat is installed. After the unmanned boat is put into the sea, the driver of the unmanned boat standing on the mother ship can operate the remote control to make the unmanned boat travel in the same direction as the mother ship, and rush towards the crane net rope at a speed slightly greater than the mother ship. When the net rope contacts the reversible hook device, the hook on the device will randomly and accurately hang into the mesh of the net rope, and then the crane operator will control the crane arm to lift the net rope, and the unmanned boat will be recovered to the mother ship together.

2. The recovery method according to claim 1, characterized in that This recovery method can realize the recovery of unmanned boats safely and conveniently.

3. The recovery method according to claim 2, characterized in that An inverted hook device and a boom net rope are required to ensure the convenience of the recovery method.

4. The recovery method according to claim 2, characterized in that Reinforced slings need to be installed to further ensure the safety of recycling.

Images