| 摘要 |
The invention relates to a pressure medium supply device for a tire (16) of a wheel unit (14), to a wheel unit (14), and to a valve arrangement (48) for a rotationally fixed transition (46), in particular for a rotary feedthrough, of a pressure medium supply device (190) for a wheel unit (14). The valve arrangement (48) has a housing part (54) through which a pressure medium can flow, a control piston (56), in particular an axially movable control piston (56) which is received on the housing part (54), and a discharge element (58) with an outlet (104) for conducting the pressure medium. The housing part (54) and the discharge element (58) are received in a rotatable manner relative to each other. The control piston (56) has at least one flow channel (68) for the pressure medium, and the control piston (56) has at least one force application surface (74) to which the pressure medium can be applied. The control piston (56) can be moved between a disengaged position and an engaged position by applying pressure to the at least one pressure application surface (74), and a pressure medium line can be established between the housing part (54) and the discharge element (58) in the engaged position. |
