The invention discloses a
water body sampling device based on an unmanned ship and a use method thereof. The
water body sampling device comprises the unmanned ship, an electric cylinder is installed on the unmanned ship, the bottom end of a
piston rod of the electric cylinder is connected with a sampler, the sampler comprises a supporting plate, and the bottom of the supporting plate is connected with an obliquely-arranged U-shaped frame. A protection cylinder is hinged to the U-shaped frame through a pin shaft. A sampling
pipe is mounted in the protective cylinder in a sleeving manner, a
cushion block is connected to one side of the U-shaped frame, and when the protective cylinder is attached to the surface of the
cushion block, the protective cylinder is inclined; the U-shaped frame is connected with a
magnet piece, and when the protection
barrel is attracted to the surface of the
magnet piece, the protection
barrel is in a vertical shape. The device also includes a baffle plate. The top of the baffle plate is connected with the supporting plate; a blocking plate is slidably connected to the surface of one side of the baffle plate, and when the protection
barrel is in a vertical shape, the blocking plate is pressed at the center hole, so that blocking of the center hole is achieved. The whole sampling process is easy to operate, efficient and intelligent, the sampling
pipe can automatically rotate and seal, manual control is not needed, the structural design is ingenious and reasonable, and use is very convenient.