Intelligent storage cabinet

The intelligent storage cabinet comprises a taking and placing mechanism and a storage mechanism, the taking and placing mechanism comprises a rack, a lifting mechanism, a horizontal moving mechanism and a pallet fork mechanism, the lifting mechanism and the horizontal moving mechanism are arranged on the rack, and the pallet fork mechanism is used for taking and placing materials; the pallet fork mechanism comprises a lower fork bottom plate, a pallet fork middle plate and a pallet fork upper plate, the pallet fork middle plate is installed on the lower fork bottom plate in a sliding mode, and the pallet fork upper plate is installed on the pallet fork middle plate in a sliding mode; a first pallet fork synchronous pulley and a second pallet fork synchronous pulley are installed at the two ends of the pallet fork middle plate respectively. A first pallet fork synchronous belt is wound around the first pallet fork synchronous belt wheel, the first end of the first pallet fork synchronous belt is connected wit