Propellant burning rate test system end cover automatic loading and unloading device

The invention discloses an automatic loading and unloading device for an end cover of a propellant burning rate testing system. Comprising a combustion chamber, a base mounting plate, a guide rod, an end cover body, an end cover seat, a graphite copper sleeve, a combustion chamber upper ring flange, a rotating cylinder, a rotating cylinder plate, an up-down cylinder plate and an up-down cylinder, and the up-down cylinder is fixed on the up-down cylinder plate and pushes the guide rod and the graphite copper sleeve to move up and down; the upper end of the guide rod is fixed with the vertical cylinder plate, and the middle of the guide rod penetrates through the graphite copper sleeve and is fixed with the rotary cylinder plate; the upper end of the rotary cylinder plate is connected with the vertical cylinder, and the lower end is fixedly connected with the rotary cylinder; the lower end of the rotating cylinder is fixedly connected with the end cover seat, the end cover is fixedly connected with the end cove