Sliding door for a metal wired pet cage

A sliding door for a metal wired pet cage, comprising:

• a pair of torsional springs;
• a rotary locking member;
• a rotary lifting handle;
• and
• a sliding-type door plate;
• wherein sliding guide rails of the sliding door are configured longitudinally,
• wherein the rotary lifting handle is hingedly fixed to an upper end of the sliding-type door plate,
• wherein the pair of torsional springs are fixed on the metal wired pet cage and are connected with both ends of the rotary locking member, and
• wherein the pair of torsional springs are configured to drive the rotary locking member to prop against the rotary lifting handle so that the sliding-type door plate is at a locking state, and
• when the sliding type door plate needs to be opened, the rotary lifting handle is rotated upwards so that the rotary locking member is separated from the rotary lifting handle, and the rotary lifting handle drives the sliding-type door plate to move upwards along the sliding guide rails.