Forage grass harvesting, smashing, bundling and film coating combined machine

The invention provides a forage grass harvesting, smashing, bundling and film coating combined machine which structurally comprises a control box, a packaging film rotator, a supporting frame, a driver, a cutting smashing machine, a bundling machine and a packaging film placing frame structure, the control box is installed above the supporting frame, and by arranging an upper rotating disc, a packaging film barrel can be rapidly replaced. By arranging the packaging film placing frame structure, under the action of inertia, when idler wheels roll in grooves, due to the fact that the grooves areof an arc-shaped groove structure, when the idler wheels rise from the slopes of the grooves, resistance can be increased, under the action of friction sleeves, rolling resistance of the idler wheelsabove a supporting shell can also be increased continuously, the idler wheels are limited in the grooves, so that a rotating rod cannot rotate, and the situation that a packaging film falls off fromthe packaging film barrel a