Small underwater vehicle sinking and floating device

Abstract

The invention discloses a sinking and floating device for a small underwater vehicle. The device adopts a stepping motor as a driving mechanism; the stepping motor drives a lead screw to rotate, and the lead screw and a nut cooperate to drive a middle support plate to move, and the middle support plate drives two pistons When the mechanism moves, it absorbs water or discharges water synchronously, so that the water storage volume in the two piston cylinders changes. The diameter of the suction and discharge port of the piston cylinder is small, and the water flows through the piston rod to drive the rubber piston to quickly inhale or discharge the piston cylinder, changing the gravity of the aircraft; when the suction and drainage are produced, the force is generated and controls the attitude adjustment of the aircraft and the speed of ups and downs, changing the navigation. The gravity of the aircraft makes the aircraft produce downward or upward acceleration to realize the ups and downs of the aircraft. The vehicle sinking and floating device has small structural size and light weight, can precisely control the suction and displacement, and enhances the adaptability and operation ability of unmanned underwater vehicles in complex environments. The sinking and floating device is highly expandable and can be applied to small underwater robots and other small underwater delivery devices.

Description

technical field [0001] The invention relates to the technical field of underwater vehicles, in particular to a sinking and floating device for a small underwater vehicle. Background technique [0002] In recent years, the technology of unmanned underwater vehicles has developed rapidly, and various types of underwater vehicles have been widely used in marine environment detection, dam exploration, and other fields of exploring marine mineral deposits and protecting marine resources. The research and development of underwater vehicles, especially small underwater vehicles, which operate at a low depth in most cases, can be widely used in pipeline inspection, underwater photography, safety search and rescue, entertainment teaching and underwater archaeology. [0003] The sinking and floating of the underwater vehicle includes increasing the gravity of the vehicle itself and tilting the attitude of the vehicle. The sinking and floating adjustment device includes gravity adjustm...

AI Technical Summary

Problems solved by technology

Patent CN2868840Y proposes a sink-float adjustment device composed of a motor and a piston cylinder, which only changes the attitude of the aircraft by adjusting the gravity of the aircraft, the effect is poor, and the swimming of the aircraft is not flexible

Invention patent CN104044717A discloses "a sinking and floating device for underwater vehicles". Large friction, large power loss, large reduction ratio cause slow water supply and drainage speed, and the device cannot accurately control the water supply and drainage

However, the mechanism is too complicated to increase the overall size and increase the difficulty of control

This kind of sinking and floating device is not suitable for small unmanned underwater vehicles or small underwater robots that require precise control of sinking and floating, and the ratio of sinking and floating water supply and displacement to its own weight is large.

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