Withdrawing mechanism with locking device

The utility model discloses a withdrawing mechanism with a locking device. The withdrawing mechanism is characterized by comprising fixed guide rails shaped like left square brackets and movable guide rails shaped like right square brackets, wherein the fixed guide rails are sleeved with the movable guide rails which can move in the definite direction along the fixed guide rails; the fixed guide rails and the movable guide rails are in movable connection; a storage framework in which a locking mechanism is arranged is arranged on the movable guide rails; fixed rollers are mounted at the front ends of the fixed guide rails shaped like left square brackets; two rollers matched with the internal grooves of the fixed guide rails are arranged on the movable guide rails shaped like right square brackets; the internal grooves of the movable guide rails are matched with the fixed guide rails mounted on the fixed guide rails. The withdrawing mechanism has a simple and compact structure, is stable and reliable in operation and is also durable.