Mechanism facilitating fast sampling of watermelons

The invention discloses a mechanism facilitating fast sampling of watermelons. The mechanism comprises a sampling rod, a cylinder, an elastic reset piece, a support plate and a push-out mechanism, wherein the sampling rod is provided with a sampling cavity; the support plate is detachably connected to one end of the cylinder; a positioning piece provided with an inward concave spherical surface is connected with the other end of the cylinder; the sampling rod is glidingly connected with the support plate; an axis of the sampling rod coincides with an axis of the cylinder; a sampling opening allowing the sampling rod to penetrate through is formed in the positioning piece; one end of the elastic reset piece is propped against the support plate, and the other end is connected with the sampling rod; the sampling cavity penetrates through the sampling rod; the push-out mechanism comprises a push rod and a pressure spring, the push rod is inserted into the sampling cavity from one end far away from the cylinder; one end of the pressure spring is connected with the inner wall of the sampling cavity, and the other end is connected with the push rod; one end of the push rod extends out of the sampling rod. With the adoption of the scheme, a watermelon sample can be rapidly taken out after sampling.