摘要:
The present disclosure relates to a chain saw of a wood handling device and to controlling the guide bar in it. The guide bar is attached to a turning frame rotatably arranged to a frame of the chain saw through a fastening arrangement. The fastening arrangement of the guide bar and the turning frame are joined by at least one guide for controlling the guide bar during movement along its longitudinal axis. The guide includes opposite slide guides with opposite sliding and mating surfaces that form a form-locking joint joining the fastening arrangement and turning frame together. This type of separate slide guide arranged in the chain saw is movable in at least one direction differing from the direction of travel allowed by the guide, which makes it possible to modify clearance between the sliding surface and mating surface.
摘要:
The present disclosure relates to an arrangement for transferring fluid to a guide bar in a chain saw. A channel can extend from a chain saw body to the fastening arrangement of the guide bar. The channel can include a cavity through the entire channel, a first end of the cavity being connected to a feed channel provided in the chain saw body and a second end thereof to a counter channel provided in the fastening arrangement. The counter channel, in turn, is arranged to extend to the guide bar. The channel is thus arranged to guide fluid flowing in the feed channel provided in the chain saw body through the channel and further through the counter channel provided in the fastening arrangement to the guide bar.
摘要:
The invention relates to a lubricating system (30; 50) for lubricating an implement (21) to be lubricated in the boom system (11) of a working machine (10), the system comprising a lubricant source (31; 51) which can be installed in a base machine (40) for the working machine (10) and coupled to the implement (21) to be lubricated. The lubricating system (30; 50) further comprises a dispensing unit (33; 53) which can be connected to the implement (21) to be lubricated, for dispensing lubricant to the implement (21) to be lubricated. The invention also relates to a working machine (10) comprising such a lubricating system (30; 50).
摘要:
An arrangement that can be turned by an assigned hydraulic pressure and flow, related to a chain saw supported by a harvesting unit for crosscutting timber, wherein a bearing arrangement is arranged for the chain saw and oriented between a guide bar housing and the chain saw's drive motor unit, wherewith an oscillatory motion can be activated by a hydraulic control valve, through which hydraulic flow is alternatively controlled via feed or connection lines to the bearing arrangement, for a first or second operating mode. The arrangement is activated via hydrostatic pressure and coordinated with the guide bar housing, and with the drive motor unit, via surrounding perforated discs oriented in parallel and aligned around an axis of rotation for a drive shaft. The hydrostatic affects the arrangement's oscillatory motion for a reciprocal motion pattern, while spent hydraulic oil serves as a lubricating film between the opposing bearing surfaces.
摘要:
Method and an arrangement within a motor saw, having a guide bar, a drive motor unit including with its chassis a drive motor, whose rotatable shaft supports a drive disc, around which a portion of an endless saw chain runs, the saw chain also being adapted with its remaining portions to run along and form the guide bar arrangement with its guide bar and along tracks allotted to side edges directed away from each other. An anchored support plate, a displaceable clamping plate and with an interrelated arrangement in an inactivated position, the end area of the guide bar within a first mode displaces the end area in a direction perpendicular from the plane and from the support plate, and within a second mode displacing the end area and its guide bar in a direction along the plane allotted to the guide bar and out of the inactivated interrelated arrangement.
摘要:
Device for felling a tree trunk, comprising a gripping claw for gripping the tree trunk and a felling means for felling the tree trunk, wherein the gripping claw comprises a frame, at least two gripping shells extending from the frame, of which at least one gripping shell is connected movably to the frame, and a gripping claw drive, wherein the movable gripping shell can be moved by means of the gripping claw drive between an open position, in which a tree trunk can be placed between the gripping shells, and a closed position in which the tree trunk can be clamped between the gripping shells. The device is distinguished in that the felling means is connected movably to at least one of the gripping shells, wherein the felling means can be moved between a protected position, in which the felling means lies within the periphery of the gripping shell connected thereto, and an unprotected position in which the felling means lies outside the periphery of the gripping shell connected thereto.
摘要:
A tree cutting apparatus includes a frame (12) having forward and rearward ends, with a pair of generally planar blades (14,16) rotatably mounted on the forward end of the frame. The blades are mounted spaced apart within the same plane, each blade having a cutting edge extending around a portion of the periphery thereof. Each cutting edge has a forward and rearward end, with the cutting edge being spaced a distance from the rotational axis of each blade increasing from the forward end to the rearward end, such that the cutting edges of the blades move closer to one another as the blades rotate to cut a tree or the like.
摘要:
A hydraulic felling head (3) for tree trunks or branches with: an interface element (6) suitable for being rigidly mounted on the end of a movable arm (2) of a work vehicle (1); a support body (5) that is rigidly attached to the interface element (6); a grapple (7) mounted on the support body (5); a first double-acting hydraulic actuator (9) that drives the grapple (7); a chain saw (10) that is hinged to the support body (5) to rotate in relation to the support body (5) about a first rotation axis (12); a hydraulic motor (11) that drives the chain saw (10); and a second double-acting hydraulic actuator (13) that drives rotation of the chain saw (10) in relation to the support body (5) and about a first rotation axis (12). The chain saw (10) is hinged to the support body (5) to rotate in relation to the support body (5) about a second rotation axis (14) that is at ninety degrees to the first rotation axis (12).