An autonomous coverage robot includes a cleaning assembly having forward roller and rearward rollers counter-rotating with respect to each other. The rollers are arranged to substantially maintain a cross sectional area between the two rollers yet permitting collapsing therebetween as large debris is passed. Each roller includes a resilient elastomer outer tube and a partially air-occupied inner resilient core configured to bias the outer tube to rebound. The core includes a hub and resilient spokes extending between the inner surface of the outer tube and the hub. The spokes suspend the outer tube to float about the hub and transfer torque from the hub to the outer tube while allowing the outer tube to momentarily deform or move offset from the hub during impact with debris larger than the cross sectional area between the two rollers.

An object-gathering apparatus includes a chassis, a plurality of wheels coupled to the chassis, a receptacle coupled to the chassis, a power supply coupled to the chassis, and a sweep assembly coupled to the chassis. The sweep assembly is configured to transfer objects from a surface into the receptacle by mechanical action on the objects, and without the use of negative pressure or vacuum suction acting on the objects during the transfer, in response to powered rotation of the sweep assembly by the power supply. The wheels can be configured to be manually driven or driven by the power supply. The power supply can include a battery clip affixed to the chassis and accessible from an exterior of the object-gathering apparatus. The sweep assembly can be coupled to a sweep assembly housing that is coupled to the chassis and configured for vertical adjustment relative to the chassis.

Retrofit box systems to maximize operational capacity of inaccessible floors are described. The retrofit box system includes a gate complex that provides fluid communication between an inaccessible floor and a box, and a box to deliver a cleaner to the inaccessible floor and adapted for equalizing pressure when the inaccessible floor is under water while minimizing waste seepage from the retrofit box system. The retrofit box system further includes a power system and a control system to deliver the cleaner to the inaccessible floor and remove waste from the inaccessible floor and the box.

A mobile cleaning robot movable within an environment can include a body, a drive arm, a container, a biasing element, and a link. The drive arm can be connected to the body and can be movable with respect to the body. The drive arm can support a drive wheel. The container can be connectable to the body and can be configured to carry a fluid therein. The biasing element can be connected to the drive arm to bias the drive wheel toward a floor surface. The link can be pivotably connected to the body and can be connected to the biasing element. The link can be engageable with the tank to adjust the biasing element based on an amount of the fluid in the container.

The disclosure relates to a cleaning robot (10). The cleaning robot (10) comprises a cleaning body (20) and an adjustment mechanism (30). The cleaning body (20) comprises a handle (100) and a working assembly (200), and the working assembly (200) is provided at one end of the handle (100), the working assembly (200) includes a roller (210) and a first driving mechanism (220), and the first driving mechanism (220) can drive the roller (210) to rotate relative to the handle (100). The adjustment mechanism (30) is connected with the first driving mechanism (220), and the adjustment mechanism (30) can adjust the rotational direction and rotational speed of the roller (210) by controlling the first driving mechanism (220).

An automatic cleaning device is provided, including: a mobile platform configured to automatically move on an operation surface; and a cleaning module arranged on the mobile platform and including a dry cleaning module and a wet cleaning module. The wet cleaning module includes a cleaning head used for cleaning the operation surface, and a driving unit used for driving the cleaning head to make a reciprocating movement along a target surface; the target surface is a part of the operation surface; the mobile platform is provided with a thimble; the wet cleaning module is provided with a slot matched with the thimble to limit the working position of the wet cleaning module.

Disclosed is an automatic cleaning apparatus, including: a moving platform configured to move automatically on an operating surface; and a cleaning module disposed on the moving platform, and including: a dry cleaning module configured to clean at least a part of the operating surface by means of dry cleaning; and a wet cleaning module configured to clean at least a part of the operating surface by means of wet cleaning, where the wet cleaning module includes: a cleaning head for cleaning the operating surface, and a driving unit for driving the cleaning head to reciprocate along a target surface, the target surface being a part of the operating surface, where a width of a lateral cleaning area of the cleaning head is smaller than a width of a lateral cleaning area of the dry cleaning module.

A self-propelled object-gathering apparatus includes a chassis, a drive system coupled to the chassis and configured to traverse the apparatus over a surface, and a receptacle coupled to the chassis. The apparatus also includes a sweep assembly coupled to the chassis and rotatable with respect to the chassis. The sweep assembly is configured to transfer objects from the surface into the receptacle by mechanical action on the objects, and without the use of negative pressure or vacuum suction acting on the objects during the transfer, in response to rotation of the sweep assembly.

An automatic cleaning device includes a mobile platform, a lifting station, a cleaning module, a liquid supplying module, and a collecting module. The mobile platform is configured to automatically move in a target direction on a surface to be cleaned. The lifting station is connected to the mobile platform and configured to move upwards or downwards with respect to the mobile platform. The cleaning module is connected to the lifting station and configured to clean the surface to be cleaned; the liquid supplying module is configured to provide cleaning liquid to the surface to be cleaned; and the collecting module is configured to collect the cleaning liquid. A height of the cleaning module of the automatic cleaning device is adjustable, and the automatic cleaning device has a great cleaning strength and is capable of collecting dirty cleaning liquid, thus, the automatic cleaning device can be applied broadly.

A surface maintenance machine comprising two front wheels, at least one rear wheel, a motive source for providing motive force to at least one front wheel to drive the machine on a surface. Embodiments also include an operator platform allowing an operator to stand thereon extending at least partly around the rear wheel, for supporting an operator in a standing position with the operator's feet on either side of the rear wheel.