Bionic rescue robot fish

Patent metadata

Field	Value
Publication number	US-2025236371-A1
Application number	US-202418894395-A
Country	US
Kind code	A1
Filing date	Sep 24, 2024
Priority date	Jan 23, 2024
Publication date	Jul 24, 2025
Grant date	—

Abstract

Provided is a bionic rescue robot fish, including a fish body skeleton, a fish head skeleton, a fishtail swing mechanism, a pectoral fin swing mechanism, a rescue mechanism and a buoyancy adjusting mechanism. The fish body skeleton is movably connected to the fish head skeleton. The fishtail swing mechanism, the pectoral fin swing mechanism, the rescue mechanism and the buoyancy adjusting mechanism are arranged on the fish head skeleton. Bionic fish skin is attached to surfaces of the fish body skeleton and the fish head skeleton in a sealing manner. The fishtail swing mechanism, the pectoral fin swing mechanism, the rescue mechanism and the buoyancy adjusting mechanism are each communicated with a control unit. The rescue mechanism can release a lifesaving airbag, and the buoyancy adjusting mechanism can change the volume of fish belly part.

First claim

What is claimed is:

1 . A bionic rescue robot fish, comprising:
a fish body skeleton, a fish head skeleton, the fish body skeleton being movably connected to the fish head skeleton; a fishtail swing mechanism; a pectoral fin swing mechanism; a rescue mechanism configured to release a lifesaving airbag; a buoyancy adjusting mechanism configured to change a volume of a fish belly part of the bionic rescue fish, wherein the fishtail swing mechanism, the pectoral fin swing mechanism, the rescue mechanism and the buoyancy adjusting mechanism are arranged on the fish head skeleton and each are in communication with a control unit; and bionic fish skin is attached to surfaces of the fish body skeleton and the fish head skeleton in a sealing manner.

2 . The bionic rescue robot fish according to claim 1 , wherein the fish body skeleton comprises a plurality of profiling support pieces, where outer contour dimensions of the plurality of profiling support pieces are designed according to an overall dimension of fish, and gradually increase along a direction from a tail of the bionic rescue robot fish to a head of the bionic rescue robot fish, the plurality of profiling support pieces are elliptical and lower parts of the plurality of profiling support pieces are respectively provided with counterweights, a shape of each of the counterweights is symmetrical about a long axis of a corresponding one of the plurality of profiling support pieces, and a center of gravity of the counterweight is adjacent to a middle part of the fish body;
one or a pair of hinge lugs are arranged at a middle part of each of the plurality of profiling support pieces, and adjacent profiling support pieces of the plurality of profiling support pieces are hinged with a pin shaft through the hinge lugs; a flexible tail fin is connected to a smallest one of the plurality of profiling support pieces, a biggest one of the plurality of profiling support pieces is hinged with the hinge lugs on the fish head skeleton, and the bionic fish skin is of a bellow structure and is attached to the smallest one of the plurality of profiling support pieces and an outside of an end of the fish head skeleton in a sealing manner, so as to form a bionic fish body; and a resilient sheet is fixedly connected between the adjacent profiling support pieces.

3 . The bionic rescue robot fish according to claim 2 , wherein the fishtail swing mechanism comprises:
a stepping motor, a gear transmission mechanism connected to the stepping motor, pull wires and two pull wire drums connected to a rotating shaft of the gear transmission mechanism, and are symmetrically arranged up and down in a manner perpendicular to the flexible tail fin, both sides of each of the two pull wire drums are fixedly connected to corresponding positions of the smallest one of the plurality of profiling support pieces by the pull wires.

4 . The bionic rescue robot fish according to claim 1 , further comprising:
a transparent observation window arranged on an upper part of the fish head skeleton in a sealing manner, the transparent observation window comprises a pressure-resistant glass cover, and a sealing ring is arranged between the observation window and the fish head skeleton a color camera connected to a support inside the observation window, wherein the fish head skeleton is provided with a sealing compartment and a battery compartment such that the control unit is arranged in the sealing compartment, and a storage battery is arranged in the battery compartment; a power switch provided at a top of the fish head skeleton; and an ultrasonic sensor provided at each of both sides and a front end of the fish head skeleton.

5 . The bionic rescue robot fish according to claim 1 , wherein the pectoral fin swing mechanism is symmetrically arranged in the fish head skeleton, and comprises:
two waterproof steering gears, two gear transmission mechanisms each having a rotating shaft, each of the two waterproof steering gears being connected to a corresponding one of the two gear transmission mechanisms, and pectoral fins, where the rotating shaft of one gear of each of the two gear transmission mechanisms is connected to a corresponding one of the pectoral fins by a coupling, the coupling is rotatably arranged in a through groove of a special-shaped waterproof block, and an inside of the waterproof block is connected to a flange on the rotating shaft of the gear transmission mechanism through a double-lip sealing ring, the two waterproof steering gears being configured to make the pectoral fins swing up and down by 30°-50° with a horizontal plane as a middle plane.

6 . The bionic rescue robot fish according to claim 1 , wherein the fish belly part of the fish head skeleton is provided with a U-shaped groove, and the rescue mechanism and the buoyancy adjusting mechanism are arranged in the U-shaped groove; the bionic fish skin is attached to two side walls of the buoyancy adjusting mechanism, two side walls of the U-shaped groove and a bottom of the rescue mechanism in a sealing manner; the bionic fish skin is resilient, and the buoyancy adjusting mechanism is configured to change a volume of the bionic fish skin.

7 . The bionic rescue robot fish according to claim 1 , wherein a shape of the rescue mechanism is U-shaped, and the rescue mechanism comprises
a base, an upper cover, the base being connected to the upper cover by a bolt in a sealing manner; a waterproof steering gear, a bevel gear transmission mechanism, hatch door opening mechanisms, gas cylinder opening mechanisms, the waterproof steering gear is respectively connected to the hatch door opening mechanisms and the gas cylinder opening mechanisms on both sides of the rescue mechanism through the bevel gear transmission mechanism; lifesaving airbags and gas cylinders; and rescue capsules symmetrically hinged to both sides of the base, and the hatch door opening mechanism are respectively provided on the rescue capsules; the lifesaving airbags are folded and respectively arranged in the rescue capsules in a sealing manner, and the gas cylinders are respectively arranged in the rescue capsules in a sealing manner; a gas outlet pipe of each of the gas cylinders is connected to a gas inlet nozzle of a corresponding one of the rescue capsules and an ejector pin by a tee, and the ejector pin is configured to open a gas outlet channel communicating between a corresponding one of the gas cylinders and a corresponding one of the lifesaving airbags through a corresponding one of the gas cylinder opening mechanisms.

8 . The bionic rescue robot fish according to claim 7 , wherein each of the hatch door opening mechanisms comprises
a transmission gear, the transmission gear and one bevel gear of the bevel gear transmission mechanism are coaxially arranged; and a wobble gear being fixedly connected to a hinge shaft of the hatch door, the transmission gear being meshed with the wobble gear; wherein each of the gas cylinder opening mechanisms comprises a spur gear coaxially arranged with the wobble gear, and a rack meshed with the spur gear, the rack being slidably arranged in a sliding chute of the upper cover and provided with a bump with an inclination angle, the bump being configured to extrude the ejector pin to move axially to open the gas outlet channel; a protective sleeve is connected to an outside of the gas cylinder through threads, and the protective sleeve comprises a head protective sleeve and a tail protective sleeve which are spliced into a whole, the head protective sleeve being provided with a limit hole for the ejector pin.

9 . The bionic rescue robot fish according to claim 1 , wherein the buoyancy adjusting mechani

Assignees

• Univ Dongguan Technology

Inventors

• Song Jialei
• Xiao Yang
• Yin Ling

Classifications

• B63G8/24

  Automatic depth adjustment; Safety equipment for increasing buoyancy, e.g. detachable ballast, floating bodies · CPC title

• B63G8/001

  Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations (self-propelled or direction controlled diving chambers with mechanical link to a base B63C11/42) · CPC title

• B63G2008/004

  autonomously operating · CPC title

• B63C9/23 Primary

  Containers for inflatable life-saving equipment · CPC title

• B25J11/00

  Manipulators not otherwise provided for · CPC title