A plunger assembly for mounting adjacent to a vertical opening of a debarking chain flail apparatus. The plunger assembly comprises first and second opposed mounting members which are securable to an undersurface thereof, and each one of mounting members defines a generally C-shaped recess. First and second plunger rails are interconnected via a plunger body, and the plunger body comprising opposed left side and right side plunging side surfaces. The first plunger rail is captively received within and guided by the first mounting frame while the second plunger rail is captively received within and guided by the second mounting frame. A first hydraulic cylinder interconnects the first mounting frame with the first plunger rail while a second hydraulic cylinder interconnects the second mounting frame with the second plunger rail to facilitate plunging in two opposed directions. The mounting frame may be mounted to the apparatus by a pair of plunger cradle and associated cradle hydraulic cylinders.

A multifunctional ship for the collection and recycling of ocean debris and the system thereof may include a hull; a detection device provided on the hull to detect ocean debris floating on the sea or deposited on the seabed; a collection device installed on the hull to collect the ocean debris detected by the detection device; a sorting device installed on the hull to sort the ocean debris collected by the collection device; a compressing device installed on the hull to compress the sorted ocean debris to compress and remove moisture and reduce the volume; a waste plastic recycling device installed on the hull to produce recycled oil by thermally decomposing the waste plastic compressed in the compressing device; a storage tank installed at the bottom of the hull to store the recycled oil produced; and a purifier for purifying wastewater generated in the process of producing recycled oil.

A multifunctional ship for the collection and recycling of ocean debris and the system thereof may include a hull; a detection device provided on the hull to detect ocean debris floating on the sea or deposited on the seabed; a collection device installed on the hull to collect the ocean debris detected by the detection device; a sorting device installed on the hull to sort the ocean debris collected by the collection device; a compressing device installed on the hull to compress the sorted ocean debris to compress and remove moisture and reduce the volume; a waste plastic recycling device installed on the hull to produce recycled oil by thermally decomposing the waste plastic compressed in the compressing device; a storage tank installed at the bottom of the hull to store the recycled oil produced; and a purifier for purifying wastewater generated in the process of producing recycled oil.

A device for processing logs, comprises a deicing apparatus (11), a debarking apparatus (22), arranged downstream of the deicing apparatus, a thermal camera (30), arranged to acquire a thermal image of at least one log downstream of the debarking apparatus, and a processing device (40). The processing device (40) is configured to receive the thermal image from the thermal camera, to process the thermal image to determine a log surface temperature, and to provide a deicing control signal to the deicing apparatus (11) based on the log surface temperature. A method of processing logs is also disclosed.

A wood chipper having a rotatable drum configured to reduce the size of wood fed into the wood chipper; a sensor configured to sense a speed of rotation of the rotatable drum; and a controller operably connected to the sensor. The controller is configured to cut power to the rotatable drum when the speed of rotation of the rotatable drum drops below a pre-set threshold value. The controller is operably engaged with a centrifugal clutch that is engaged to enable the rotatable drum to be rotated. When the speed of drum rotation drops below the threshold value because debris is slowing down rotation of the drum, the centrifugal clutch is disengaged by dropping engine speed. Disengagement of the centrifugal clutch cuts power to the drum and rotation thereof ceases so that the debris may be cleared.

A wood chipper having a rotatable drum configured to reduce the size of wood fed into the wood chipper; a sensor configured to sense a speed of rotation of the rotatable drum; and a controller operably connected to the sensor. The controller is configured to cut power to the rotatable drum when the speed of rotation of the rotatable drum drops below a pre-set threshold value. The controller is operably engaged with a centrifugal clutch that is engaged to enable the rotatable drum to be rotated. When the speed of drum rotation drops below the threshold value because debris is slowing down rotation of the drum, the centrifugal clutch is disengaged by dropping engine speed. Disengagement of the centrifugal clutch cuts power to the drum and rotation thereof ceases so that the debris may be cleared.

An extendable structure adapted to operate between a retracted configuration and at least one at least partially extended configuration includes a box-like body, a foldable floor element, and a foldable ceiling element. The box-like body includes a first and a second upright. The foldable floor element is hinged at a lower portion of the uprights and is configured for being folded and spread out. The foldable ceiling element is hinged at an upper portion of the uprights and is configured for being folded and spread out. In the retracted configuration of the extendable structure, the foldable floor element and the foldable ceiling element are completely housed within the box-like body, which defines an overall size of the extendable structure.

A flywheel and paddle assembly for a chipping or shredding apparatus, including a wood chipper, a brush chipper, and a leaf shredder. The assembly has a flywheel attached coaxially to a drive shaft. The flywheel has at least one aperture extending from the front side to the back side, and carries at least one knife adjacent to the at least one aperture. The knife presents a knife edge on the front side of the flywheel. A paddle is rotatably mounted coaxially to the drive shaft adjacent to the back side of the flywheel. The paddle is configured to rotate on the drive shaft independently of the flywheel. A chipping or shredding apparatus incorporating the aforesaid flywheel and paddle assembly is also disclosed.

A wood chipper knife includes a knife body and, in relation to a vertical axis of the wood chipper knife, at least one cutter side, which comprises a top cutting edge portion and a bottom cutting edge portion that intersect to form a cutting edge. The bottom cutting edge portion includes a planar wood attacking portion, which begins at the cutting edge and towards the knife body is followed by a recess. The recess is a pressure release recess, which, from the wood attacking portion, abruptly falls to a bottom of the pressure release recess, and which stretches from the wood attacking portion to the knife body. The knife body comprises a chip guiding portion, which, from the pressure release recess, rises towards the knife body.

A wood chipper comprising a chamber in which wood is chipped, at least one roller for feeding of the wood into the chamber, and an hydraulic motor. Hydraulic lines flow connect a hydrostatic pump to the hydraulic motor for effecting rotation of the at least one roller for driving the at least one roller. A member on the wood chipper has splined projections for engaging splined projections on a member on the tractor to effect rotation by the member on the tractor of the member on the wood chipper in order for the wood chipper to receive mechanical power from a power take-off of the tractor for operation of the hydrostatic pump.