Floor cleaning machine with coupling device

摘要

The floor-cleaning machine comprises a carriage (3) having wheels (5) for driving over a bottom surface (7) to be cleaned, a suction device having an intake manifold (11), which is arranged on a side of the carriage belonging to the bottom surface to be processed, and a coupling device (13) for connecting an additional device at the floor-cleaning machine. The additional operating device comprises a coupling plate parallely passing in an area of the bottom surface to be processed. The coupling plate comprises a connection opening. The floor-cleaning machine comprises a carriage (3) having wheels (5) for driving over a bottom surface (7) to be cleaned, a suction device having an intake manifold (11), which is arranged on a side of the carriage belonging to the bottom surface to be processed, and a coupling device (13) for connecting an additional device at the floor-cleaning machine. The additional operating device comprises a coupling plate parallely passing in an area of the bottom surface to be processed. The coupling plate comprises a connection opening. The additional device is configured in a moving direction over the bottom surface to be moved. The coupling device comprises a height-adjustable coupling element opposite to the carriage. The coupling element is formed as a plane parallely defined to the connecting plate passing through the wheels. The connecting plate comprises a through hole by which the intake manifold extends itself to the carriage. Engaging elements for engaging the additional device with the connecting plate are provided on a lateral edge of the connecting plate in a direction of the floor-cleaning machine. The additional device is coupled with the floor-cleaning machine in such a way that the coupling plate is pushed onto the connecting plate, where the through hole and the connection opening are aligned to each other so that the additional device is directly connected with the intake manifold by delaying. A dimension of the connecting plate in a transverse direction is reduced from a front end viewed in the direction of the floor-cleaning machine of the connecting plate. The dimension of the connecting plate in the transverse direction of the front end of the connecting plate is linearly reduced and it adjoins at a section having a constant width. Coupling projections are provided as the engaging elements at the edges externally facing the connecting plate. The coupling device is designed such that the connecting plate is processed in a height relative to the carriage such that it passes independent of the adjusted height parallel to the plane defined by a support surface of the wheels. The coupling device comprises two pairs of struts parallely arranged to each other and a direction perpendicular to the plane defined by the support surfaces of the wheels whose end is connected to the carriage and an other end is pivotally connected to the connecting plate. The coupling device comprises a locking unit so that the connecting plate is locked in a position in which the connecting plate has a maximum distance to the plane defined by the support surfaces of the wheels. The intake manifold is flexibly connected with a suction device via a suction line. The locking device is provided on the connecting plate, which has a sliding bar perpendicular to the plane of the connecting plate. An independent claim is included for an additional device for a floor-cleaning machine.