Tray separating apparatus, security check system, tray separating method, and computer readable storage medium

A tray separating apparatus, comprising:

• a main body, having an accommodating part, the accommodating part extending in a first direction;
• a tray inlet, located at a top of the main body, the tray inlet communicating with the accommodating part, and the accommodating part being configured to receive an empty tray placed from the tray inlet;
• a tray outlet, located at a side of the main body, the tray outlet communicating with the accommodating part;
• a first transmission part, located at a bottom of the accommodating part, the first transmission part being configured to carry the empty tray, and output the empty tray from the tray outlet in a second direction, and the second direction being perpendicular to the first direction;
• a first limiting part, mounted on the main body, wherein the first limiting part is able to be switched between a first position and a second position;
• and
• a second limiting part, mounted on the main body, the second limiting part being located below the first limiting part in the first direction, wherein the second limiting part is able to be switched between a third position and a fourth position;
• wherein:
• at the first position, the first limiting part is able to abut against the empty tray placed from the tray inlet, so as to limit downward movement of the empty tray in the first direction, and the empty tray that abuts against the first limiting part is able to be stacked with more than one empty tray placed from the tray inlet;
• at the second position, the first limiting part is able to be separated from the empty tray placed from the tray inlet, so as to enable the empty tray to move downwards in the first direction;
• at the third position, the second limiting part is able to abut against the empty tray placed from the tray inlet, so as to limit downward movement of the empty tray in the first direction;
• and
• at the fourth position, the second limiting part is able to be separated from the empty tray placed from the tray inlet, so as to enable one empty tray to move downwards in the first direction to be borne by the first transmission part.