A floor cleaning machine, comprising a machine housing extending along a longitudinal axis between a front end and a rear end, comprising a cleaning liquid container, which is accommodated in the machine housing, comprising a dirty liquid container, which is accommodated in the machine housing, comprising a chassis having wheels (11, 13), which carries the machine housing and is designed in such a way that the floor cleaning machine can be moved over a floor surface to be cleaned, wherein the chassis has at least one front wheel and at least one rear wheel, which are spaced apart from one another along the longitudinal axis, wherein the chassis is designed to be steerable, so that a direction of travel along which the floor cleaning machine moves over the floor surface to be cleaned can be changed, comprising a cleaning device having cleaning elements which are designed to engage with the floor surface to be cleaned when the floor cleaning machine is moved over the floor surface to be cleaned, comprising a device for applying cleaning liquid from the cleaning liquid container to the floor surface to be cleaned, which is designed in such a way that the cleaning liquid is applied in such a way that the cleaning liquid reaches the region of the cleaning device, and comprising a dirty liquid receiving device, which extends perpendicular to the longitudinal axis and parallel to the floor surface to be cleaned, wherein the dirty liquid receiving device is designed to receive liquid located on the floor surface to be cleaned so that said liquid can be conveyed to the dirty liquid container, wherein the dirty liquid receiving device is arranged on the machine housing on the side of the rear wheel facing away from the front wheel, as viewed along the longitudinal axis, and wherein the dirty liquid receiving device is mounted on the machine housing so as to be displaceable between a retracted position and an extended position, wherein the dirty liquid receiving device is closer to the at least one rear wheel in the retracted position than in the extended position as viewed along the longitudinal axis, characterized in that a drive, preferably a linear drive, is provided which is designed to move the dirty liquid receiving device between the retracted and the extended position. comprising a cleaning liquid container, which is accommodated in the machine housing, comprising a dirty liquid container, which is accommodated in the machine housing, comprising a chassis having wheels (11, 13), which carries the machine housing and is designed in such a way that the floor cleaning machine can be moved over a floor surface to be cleaned, wherein the chassis has at least one front wheel and at least one rear wheel, which are spaced apart from one another along the longitudinal axis, wherein the chassis is designed to be steerable, so that a direction of travel along which the floor cleaning machine moves over the floor surface to be cleaned can be changed, comprising a cleaning device having cleaning elements which are designed to engage with the floor surface to be cleaned when the floor cleaning machine is moved over the floor surface to be cleaned, comprising a device for applying cleaning liquid from the cleaning liquid container to the floor surface to be cleaned, which is designed in such a way that the cleaning liquid is applied in such a way that the cleaning liquid reaches the region of the cleaning device, and comprising a dirty liquid receiving device, which extends perpendicular to the longitudinal axis and parallel to the floor surface to be cleaned, wherein the dirty liquid receiving device is designed to receive liquid located on the floor surface to be cleaned so that said liquid can be conveyed to the dirty liquid container, wherein the dirty liquid receiving device is arranged on the machine housing on the side of the rear wheel facing away from the front wheel, as viewed along the longitudinal axis, and wherein the dirty liquid receiving device is mounted on the machine housing so as to be displaceable between a retracted position and an extended position, wherein the dirty liquid receiving device is closer to the at least one rear wheel in the retracted position than in the extended position as viewed along the longitudinal axis, characterized in that a drive, preferably a linear drive, is provided which is designed to move the dirty liquid receiving device between the retracted and the extended position.