Automatic falling-off device for self-sinking and floating type profiling float diversion shell and diversion shell

An automatic falling-off device for a self-sinking and floating type profiling float diversion shell, comprising a locking device and an unhooking device;

• the locking device comprising a locking hook plate and a locking core plate;
• wherein the locking hook plate is arranged on one half diversion shell, and the locking core plate is fixed on another half diversion shell;
• a locking hook at a front end of the locking hook plate fits with a locking ring at a front end of the locking core plate for locking;
• the unhooking device comprises a base and a buoyancy airbag;
• the base is provided below the locking hook plate, and the buoyancy airbag is mounted between the base and the locking hook plate;
• when the buoyancy airbag is inflated, the locking hook plate is driven to move upwards to release the locking core plate, and then cause the diversion shell to disengage and fall off;
• a limiting airbag is provided on the base;
• positioning grooves are provided on both sides of the locking hook plate;
• the limiting airbag fits with the positioning grooves, and when the limiting airbag is inflated, the locking hook plate is limited to maintain a locked state;
• and a limit spring is provided between the base and the locking hook plate.