Tyre pressurisation device with aa) a wheel rim connector element with an inlet port of the wheel rim connector element, which can be coupled to a pipe or tube, and with an outlet port of the wheel rim connector element, which can be coupled with a wheel rim, and/or ab) an axle body rotary lead-through which comprises - a stator, which can be fixed to an axle body, with an inlet port 9 of the axle body rotary lead-through, which can be coupled to the axle body, - a rotor, which can be rotated with respect to the stator, with an outlet port of the axle body rotary lead-through, which can be coupled to a or the pipe or tube, and - a pneumatic connection between the stator and the rotor that is sealed to the outside when the rotor undergoes relative rotation with respect to the stator, characterised in that ba) the wheel rim connector element - comprises a mechanical actuation element, which protrudes into the outlet port of the wheel rim connector element in such a way that the mechanical actuation element is actuated in a motion-controlled way when connected to the wheel rim, in which way a stop valve is opened, and - comprises a non-return valve, where the non-return valve and the stop valve are arranged between the inlet port of the wheel rim connector element and the outlet port of the wheel rim connector element in fluidic series connection and/or bb) the axle body rotary lead-through comprises a first transfer cross-section and a second transfer cross-section, which in fluidic parallel connection are arranged between the inlet port of the axle body rotary lead-through and the outlet port of the axle body rotary lead-through, where the first transfer cross-section is permanently open and the second transfer cross-section can be closed via a pressure securing valve, which takes up a blocking pressure securing position when a threshold value of a pressure difference between the pressure on the inlet port of the axle body rotary lead-through and the pressure on the outlet port of the axle body rotary lead-through is surpassed. aa) a wheel rim connector element with an inlet port of the wheel rim connector element, which can be coupled to a pipe or tube, and with an outlet port of the wheel rim connector element, which can be coupled with a wheel rim, and/or ab) an axle body rotary lead-through which comprises - a stator, which can be fixed to an axle body, with an inlet port 9 of the axle body rotary lead-through, which can be coupled to the axle body, - a rotor, which can be rotated with respect to the stator, with an outlet port of the axle body rotary lead-through, which can be coupled to a or the pipe or tube, and - a pneumatic connection between the stator and the rotor that is sealed to the outside when the rotor undergoes relative rotation with respect to the stator, characterised in that - a stator, which can be fixed to an axle body, with an inlet port 9 of the axle body rotary lead-through, which can be coupled to the axle body, - a rotor, which can be rotated with respect to the stator, with an outlet port of the axle body rotary lead-through, which can be coupled to a or the pipe or tube, and - a pneumatic connection between the stator and the rotor that is sealed to the outside when the rotor undergoes relative rotation with respect to the stator, ba) the wheel rim connector element - comprises a mechanical actuation element, which protrudes into the outlet port of the wheel rim connector element in such a way that the mechanical actuation element is actuated in a motion-controlled way when connected to the wheel rim, in which way a stop valve is opened, and - comprises a non-return valve, where the non-return valve and the stop valve are arranged between the inlet port of the wheel rim connector element and the outlet port of the wheel rim connector element in fluidic series connection and/or - comprises a mechanical actuation element, which protrudes into the outlet port of the wheel rim connector element in such a way that the mechanical actuation element is actuated in a motion-controlled way when connected to the wheel rim, in which way a stop valve is opened, and - comprises a non-return valve, bb) the axle body rotary lead-through comprises a first transfer cross-section and a second transfer cross-section, which in fluidic parallel connection are arranged between the inlet port of the axle body rotary lead-through and the outlet port of the axle body rotary lead-through, where the first transfer cross-section is permanently open and the second transfer cross-section can be closed via a pressure securing valve, which takes up a blocking pressure securing position when a threshold value of a pressure difference between the pressure on the inlet port of the axle body rotary lead-through and the pressure on the outlet port of the axle body rotary lead-through is surpassed.