The cleaning vehicle which is suitable for holding and transporting containers and devices for the commercial cleaning and disinfection of floors and other surfaces, consists of a main vehicle (1) with wheels (4) and a trailer (2) with wheels (4) and a coupling (5) for connecting the trailer (2) to the main vehicle (1). The coupling (5) consists of at least one tow-hook (6) and corresponding eyes (7) in which the hook (6) can engage. The shape of the hook (6) and eyes (7) is such that the coupling (5) allows the trailer (2) to rotate about the connecting line of the eyes (7) of the main vehicle (7) and/or the vertical movement of the trailer (2) in relation to the main vehicle (1), but no movement of the trailer (2) in the plane of travel in relation to the main vehicle (1). The wheels of the main vehicle (1) do not lock when taking curves and are stable even on uneven surfaces. At the same time the trailer can be properly steered by the main vehicle without any undesired movements of the trailer. The improvement is also simple and economical.