Pineapple planting device and pineapple planting machine

The utility model discloses a pineapple planting device and a pineapple planting machine. The pineapple planting device comprises a rack, a driving mechanism arranged on the rack, a seedling hopper arranged at the upper part of the rack, a depth limiting wheel which is arranged below the middle part of the rack and can roll, and a planting duckbill which is arranged below the rack, is driven by the driving mechanism to move up and down in a reciprocating manner and can be opened and closed downwards, the upper portion of the planting duckbill can be communicated with the bottom of the seedling hopper through a valve, and the valve can be opened when the planting duckbill ascends and can be closed when the planting duckbill descends. When the pineapple seedling planting device is used, roots of pineapple seedlings are placed into the seedling hoppers downwards, when the planting duckbills move downwards, the valves are closed, the planting duckbills are closed downwards, the valves are opened to enable the upp