The Z1-300t heavy-duty AGV can provide a single-vehicle load capacity of 300t, has an Ackerman turning function, and has strong off-road capabilities. It is particularly suitable for the transportation of large-sized and overweight workpieces. It can operate on asphalt, self-leveling, and concrete floors, and has strong adaptability to ground conditions. Because it has its own vehicle self-lifting function, in addition to being used to directly carry workpieces, it can also be used to indirectly carry workpieces by drilling into the workpiece rack and self-lifting, lifting the workpiece rack, and then indirectly carrying workpieces. According to user requirements, multiple AGVs can be synchronized and used to lift overweight parts. It uses the composite navigation mode of PGV+ QR code for full automatic operation, and can also be operated remotely.