A floor polishing armature including an inner ring having an inner ring upper surface and an inner ring lower surface, an outer ring, spokes extending between the inner ring and the outer ring, a disc retainer formed on the outer ring, a spoke opening extending from the inner ring upper surface to the inner ring lower surface, and a disc insert retained in the disc retainer. The disc is insert adapted for floor treatment. The spoke opening extends to the disc retainer. The disc insert is released by pressing through the spoke opening. Optionally, airflow openings are formed between the spokes. Spoke indents are preferably formed on an underside of the spokes between the inner ring and the disc retainer. The disc inserts and the arc inserts are both retained by interference fit.

A surface maintenance machine comprising a body having a forward section, a middle section and a rearward section, wherein the forward section is positioned to the front of a transverse centerline of the machine, the middle section is generally centered on the transverse centerline and a rearward section positioned to the rear of the transverse centerline. A storage chamber can be defined in the middle section and enclosed by a front wall, a rear wall, lateral walls, a generally planar top surface, and a generally planar lower surface, such that the storage chamber is generally isolated from components of the surface maintenance machine. The storage chamber can have a storage chamber bottom surface with or below a top surface of at least one battery positioned in the forward section.

A cleaning tool for a floor cleaning machine is proposed which includes a cleaning-action device and a supporting part on which the cleaning-action device is arranged and by means of which the cleaning tool is fixable to the floor cleaning machine, wherein the supporting part includes a seating having a wall and a seating space for a tool holding head of the floor cleaning machine which is bounded by the wall, and the wall includes a holding region for the tool holding head, wherein the wall includes an insertion region for the tool holding head to which the holding region is adjoined, wherein the seating space is widened in the insertion region in comparison with the holding region and tapers towards the holding region.

A cleaning tool for a floor cleaning machine is proposed which includes a cleaning-action device and a supporting part on which the cleaning-action device is arranged and by means of which the cleaning tool is fixable to the floor cleaning machine, wherein the supporting part includes a seating having a wall and a seating space for a tool holding head of the floor cleaning machine which is bounded by the wall, and the wall includes a holding region for the tool holding head, wherein the wall includes an insertion region for the tool holding head to which the holding region is adjoined, wherein the seating space is widened in the insertion region in comparison with the holding region and tapers towards the holding region.

In general, a Buffing Pad Centering System (BPCS) for centering a back plate having an edge and a front surface is described. In an example of an implementation of the BPCS, the BPCS may include a centering ring having a top boundary and a bottom boundary and a buffing pad attached to the bottom boundary of the centering ring, where the centering ring is centered on the buffing pad. The centering ring may include a cylindrical vertical member extending between the top boundary and bottom boundary, where the cylindrical vertical member has an inner cylindrical surface and an outer cylindrical surface, and where the inner cylindrical surface is capable of snuggly receiving the back plate.

In general, a Buffing Pad Centering System (BPCS) for centering a back plate having an edge and a front surface is described. In an example of an implementation of the BPCS, the BPCS may include a centering ring having a top boundary and a bottom boundary and a buffing pad attached to the bottom boundary of the centering ring, where the centering ring is centered on the buffing pad. The centering ring may include a cylindrical vertical member extending between the top boundary and bottom boundary, where the cylindrical vertical member has an inner cylindrical surface and an outer cylindrical surface, and where the inner cylindrical surface is capable of snuggly receiving the back plate.

An autonomously traveling floor washer autonomously performs an appropriate cleaning operation so that a washing liquid does not remain on a floor surface. In accordance with a cleaning schedule, the autonomously traveling floor washer autonomously travels and performs cleaning of the floor surface using a squeegee and the washing liquid. If a washing liquid discharge position at a taught data obtaining time is not included in a squeegee movement track calculated based on a position and a width of the squeegee at the taught data obtaining time, the cleaning schedule is modified so that the washing liquid discharge position is included in the squeegee movement track.

A mobile robot includes a body, a driving system connected to the body and configured to drive the mobile robot move of ground, a detecting module supported by the body and a controller received in the body. The detecting module includes a light source emitting light towards the ground, and a light sensor configured to obtain characteristic information and a shutter value of an image of the ground. The controller is configured to adjust the intensity of the light source according to the charcharacteristic information of the image and monitor conditions of the ground according, to the shutter value, which can accurately detect conditions of the ground a and prevent misjudgment of the mobile robot.

A mobile robot includes a body, a driving system connected to the body and configured to drive the mobile robot move of ground, a detecting module supported by the body and a controller received in the body. The detecting module includes a light source emitting light towards the ground, and a light sensor configured to obtain characteristic information and a shutter value of an image of the ground. The controller is configured to adjust the intensity of the light source according to the charcharacteristic information of the image and monitor conditions of the ground according, to the shutter value, which can accurately detect conditions of the ground a and prevent misjudgment of the mobile robot.

A floor cleaning machine can comprise a chassis, a cleaning mechanism, a control system, and a cleaning operation sensing system connected to the chassis. The chassis can be configured for movement along a cleaning path. The cleaning mechanism can perform a cleaning operation. The liquid system can provide liquid to the cleaning mechanism. The recovery system can recover liquid from the cleaning operation. The control system can control performance of the cleaning operation. The cleaning operation sensing system can detect a condition of the cleaning operation. The cleaning operation sensing system can comprise a water trailing detection system comprising: a frame connected to the chassis aft of the recovery system; an absorbent medium connected to the frame; and a moisture sensor in communication with the control system to alter a signal in response to moisture in the absorbent medium.