Mechanical arm of brine tank

The utility model discloses a mechanical arm of a brine tank. The mechanical arm comprises a top sliding beam, a servo motor, a fixed frame, a control box, a control board, a main telescopic cylinder, a movable frame, a left auxiliary telescopic cylinder, a right auxiliary telescopic cylinder, a first mechanical paw, a second mechanical paw and a third mechanical paw, wherein the servo motor and the fixed frame are connected with the top sliding beam; the control box is connected with the upper end of the fixed frame; the control board is arranged on one side of the control box; the main telescopic cylinder is connected with a support frame; the movable frame is connected with the main telescopic cylinder; the left auxiliary telescopic cylinder and the right auxiliary telescopic cylinder are arranged in the movable frame; the first mechanical paw is connected with the left auxiliary telescopic cylinder; the second mechanical paw is arranged below the main telescopic cylinder; the third mechanical paw is conne