A log hauler device is provided. In some embodiments, an example log hauler device includes a frame attachable to a small machine, and one or more log hauling components attached to the frame.

A grappler assembly having an assembly framework and a grappler device that is supported by the assembly framework. The grappler device has at least one pair of grappler arms that engages with a desired section of a tree to be removed. The grappler assembly incorporating its own independent power module for supplying hydraulic power to the grappler device and controlling operation of the at least one pair of grappler arms, and the power module is mounted solely to the assembly framework.

A post handling tool is adaptable for mounting on a skid steer device. It utilizes a pair of hydraulic clamps secured to a base having a vertical stabilizing pole perpendicularly secured to the base.

The invention relates to a method in a weighing system, in which method the mass of the bundle is weighed and recorded during both loading % and unloading m.sub.i_p of the bundle, during loading, the total loading mass m.sub.K_kok_j is calculated from the mass m.sub.i_c of one or more bundles weighed during loading and corrected using a correction factor C.sub.j, the total unloading mass m.sub.p_kok_j is calculated from the mass m.sub.i_p of one or more bundles weighed during unloading, with the aid of the said total loading mass m.sub.K_COk_j and total unloading mass m.sub.p_kok_j, a new corrected value Cj+1 is calculated for the correction factor C.sub.j in order to adjust the weighing for the loading of the next load K.sub.j+1. The invention also relates to a corresponding software product, an arrangement, and a material-handling machine.

A grabbing device having a plurality of jaws which can be moved between an open position and a closed position to enable the device to grasp an object(s). The technology finds particular application in the forestry industry and moving logs.

A grapple for handling logs includes a base portion connectable to a working machine portion and at least one tine connected to the base portion. The at least one tine has a protruding length from the base portion. The grapple further includes a catch arm pivotably arranged relative to the base portion. The grapple can assume configurations with different protruding lengths of the at least one tine.

The invention provides a knuckle boom loader having a knuckle boom, an operator seat, and a hydraulic system. The hydraulic system comprises a hydraulic fluid reservoir, a hydraulic pump, and hydraulic fluid lines. The knuckle boom loader further comprises an operator elevator having an elevator platform. The operator elevator has both a lowered position and a raised position. The elevator platform is closer to the operator seat when the operator elevator is in the raised position than when the operator elevator is in the lowered position. Also provided are methods for operating such a loader.

The invention provides a knuckle boom loader having a knuckle boom, an operator seat, and a hydraulic system. The hydraulic system comprises a hydraulic fluid reservoir, a hydraulic pump, and hydraulic fluid lines. The knuckle boom loader further comprises an operator elevator having an elevator platform. The operator elevator has both a lowered position and a raised position. The elevator platform is closer to the operator seat when the operator elevator is in the raised position than when the operator elevator is in the lowered position. Also provided are methods for operating such a loader.

A skyline log conveying system having a skyline for extending between two elevated supports, one at or above a landing at which logs are deposited and another at a lower position at least as low as an area from which logs are to be moved. A carriage is rollably mounted to the skyline. A grapple is suspended from the carriage, the grapple having closed and opened positions for grasping and releasing logs. A hydraulic pump is mounted to the carriage. A rotatable member is driven by the skyline with the rolling of the carriage on the skyline for driving the hydraulic pump to generate hydraulic pressure. At least one accumulator is in hydraulic communication with the hydraulic pump, the at least one accumulator capable of storing pressure when hydraulic pressure is transmitted to it by the hydraulic pump. A hydraulic ram is hydraulically interconnected with the at least one accumulator and mounted to the grapple to selectively close the grapple to facilitate the grasping of logs.

A grapple-heel rack having a frame, a grapple, and first and second angle-enabler catches. A grapple attachment (which may be or may include a universal joint) may be used to support the grapple from a nose of the frame. A mechanical grapple return system may be used to return the grapple from anon-neutral position to a neutral position. At least one method for using the grapple-heel rack.