Abstract: A platform for mounting of an autonomous powering engine onto a firewood splitting apparatus includes a rigid bearing frame on which a powering engine is mounted. The engine is connected to a transmission, which is mechanically connected with a cardan coupling of a firewood splitting apparatus. The frame is arranged a distance apart from the ground and in a plane parallel to a plane defined by resting surfaces on supporting legs of a firewood splitting machine. The frame is furnished with two parallel and pivotal linear bearing beams that are pivotal around the axis that extends perpendicularly with respect to the plane of the frame and is pivotally connected with each corresponding connecting seat to establish a detachable interconnection with each disposable bottom connecting seat on a firewood splitting apparatus.

Abstract: A hydraulic assembly for driving and controlling small hydraulic units, such as hydraulic cylinders of a brake and/or clutch of a forestry winch, is disclosed. The hydraulic assembly includes a means for establishing and also maintaining a pre-determined pressure of a hydraulic media. The hydraulic assembly is characterized by as low as possible hydraulic loss. Also, a quantity of hydraulic media required for a regular operation and maintaining the pressure within the hydraulic assembly is as low as possible.