Robotic lawnmower cutter assembly, robotic lawnmower, and method of attaching a lawnmower cutter assembly to a lawnmower

A lawnmower cutter assembly adapted to move one or several grass cutting knives in a cutting plane to cut grass, comprising:

• a knife carrier arrangement configured to carry one or several grass cutting knives, the knife carrier arrangement configured to be rotated about a cutter rotation axis by a cutter drive shaft;
• a skid plate arrangement comprising a skid plate suspended, when in use, below the knife carrier arrangement, the skid plate arrangement being rotatably connected to the knife carrier arrangement to enable rotation of the knife carrier arrangement in relation to the skid plate about the cutter rotation axis,
• wherein the skid plate arrangement and the knife carrier arrangement are configured to be axially held, when in use, between an axial stop shoulder of the cutter drive shaft and an end piece rigidly connected to the cutter drive shaft, the end piece thereby vertically carrying the skid plate arrangement and the knife carrier arrangement,
• wherein the skid plate arrangement comprises a bearing housing,
• wherein the skid plate arrangement comprises a skid plate clamp arrangement comprising a lower skid plate clamping element and an upper skid plate clamping element, the upper and lower skid plate clamping elements clamping the skid plate between them,
• wherein the bearing housing is integrally formed with the lower skid plate clamping element,
• wherein clamping screws are screwed into the lower skid plate clamping element from above,
• wherein at least one of the lower and upper skid plate clamping elements defines an end piece housing, and the lawnmower cutter assembly further comprises an end piece lid pivotable between a closed position, in which the end piece lid covers a lower side of the end piece housing, and an open position, in which the end piece lid exposes the end piece for access from below.

A lawnmower cutter assembly adapted to move one or several grass cutting knives in a cutting plane to cut grass, and comprising:

• a knife carrier arrangement configured to carry one or several grass cutting knives, the knife carrier arrangement configured to be rotated about a cutter rotation axis by a cutter drive shaft;
• a skid plate arrangement comprising a skid plate suspended, when in use, below the knife carrier arrangement, the skid plate arrangement being rotatably connected to the knife carrier arrangement to enable rotation of the knife carrier arrangement in relation to the skid plate about the cutter rotation axis,
• wherein the skid plate arrangement and the knife carrier arrangement are configured to be axially held to the cutter drive shaft via one single fastener,
• wherein the skid plate arrangement is rotatable relative to the knife carrier arrangement via a bearing, to enable rotation of the knife carrier arrangement in relation to the skid plate about the cutter rotation axis, the bearing being arranged in a bearing housing;
• and
• further comprising a bearing housing lid movable between a closed position, in which the bearing housing lid covers a lower side of the bearing housing, and an open position, in which the bearing housing lid exposes the bearing housing for access from below, and
• wherein the bearing housing lid is configured to be axially supported, when in the closed position, by an edge of the skid plate.