A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

A robotic pruning apparatus that can be adapted to fit around a variety of trees and can move along the length of the tree while performing a variety of pruning operations. The pruning apparatus can be configured with a variety of different cutting heads that have multiple degrees of freedom of movement such that they can be used to perform any number of cutting operations along the length of the tree. The apparatus can be remotely operated by a human or can be autonomous or semi-autonomous.

The embodiments described herein are directed to a cutting apparatus incorporating anti-pinching and anti-snag structures called anvils in conjunction with cutting means such as a cutting chain or series of circular saw blades. In one embodiment, the cutting apparatus may be incorporated into a cutting head connected to a vehicle by an articulated boom for use as part of an overall limb-cutting apparatus for use in utility or public easements that can prune hundreds of limbs quickly in a single plane, and then process the tree limbs efficiently.

A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

An automated tree cutting assembly includes a collar that may be positioned around a tree. A plurality of climbing units is movably coupled to the collar. The climbing units frictionally engage the tree thereby facilitating each of the climbing units to urge the collar around and up the tree. Each of the climbing units is positionable at selected angle with respect to the collar. Thus, each of the climbing unit units may urge the collar to travel in a spiral along the tree thereby facilitating the collar to climb upwardly and downwardly along the tree. A cutting unit is movably coupled to the collar to cut branches from the tree when the collar is positioned around the tree.

The present invention relates to an unmanned aerial tree harvesting system comprising a remotely and/or autonomously controlled UAV, an autonomously and/or remotely controlled tree harvesting tool configured for holding and/or delimbing and/or cutting at least a portion of a tree trunk attached underneath the UAV via at least one cord, a means configured for detecting rotational motion and/or pendulum motion of the tree harvesting tool, means attached to the UAV configured for detecting trees from above, at least one remotely and/or autonomously controlled forcing means, attached to the tree harvesting tool, configured for at least damping detected pendulum motion of the tree harvesting tool.

A chipping device that has a chipper framework and a rotor having a plurality of spaced apart replaceable knives, teeth or strikers mounted on a periphery of the rotor and which cooperate with at least one anvil for comminuting desired limbs, branches or trunks of trees into chips having a desired size. A combustion engine supplies rotational drive to at least the rotor. A hydraulic power source for supplying power to hydraulic components of the chipping device and controlling operation thereof. Both the engine and the hydraulic power source being solely and entirely supported by the chipper framework so as to move along with the suspendable chipping device.

The climbing palm tree trimmer may ascend and descend a tree trunk of a palm tree in order to trim the top of the palm tree. A cutting ring may rotate within a housing ring so that a plurality of blades projecting upwards from the cutting ring may cut trimmings from the palm tree. The cutting ring may separate such that the cutting ring may be placed around the tree trunk and reassembled. The housing ring may likewise separate such that the housing ring may be placed around the tree trunk and reassembled. A plurality of drive units may move the climbing palm tree trimmer up or down the tree trunk. Up and down movements and activation of the cutting ring may be controlled from the ground using the trimmer control box.

A system for multi-axis self-climbing tree trimmer including a self-climbing platform, a motorized carrier, and a trimming portion. The trimming portion includes a base, an actuator with an extendable piston, one or more articulating arms having a curved configuration to receive a tree trunk or to form a central opening to substantially encircle a tree trunk. Each articulating arm includes one or more interchangeable cutting tools for tree trimming and one or more cut depth control elements for controlling the depth of engagement of the cutting tools. The base may include a wheel element to indicate pressure exerted by the actuator. The extendable piston is coupled to the articulating arms, wherein when the extendable piston extends, the articulating arms move to an open configuration, and when the extendable piston retracts, the articulating arms move to a closed configuration, and the articulating arms may move independently of each other.

The invention relates to an automatic walking garden trimmer which includes a power locomotive and a trimming device. The power locomotive is rotatably connected with a turntable support whose horizontal rotation is driven by a power device. The turntable support is hinged with a lower support arm and a base cylinder which drives the lower support arm to swing. The end of the lower support arm is hinged with at least two outstretched arms and an extension cylinder used to drive the outstretched arms to swing and adjust outstretching distance. The connecting seat is connected to a sphere. Two sets of trimming devices are arranged on the side of the sphere. The trimming device includes a spiral device and a trimming ring. The spiral device includes a spiral bracket and a sleeve arranged on the spiral bracket. The rotating blade of the trimming device of the present invention can be replaced. The operator can select a suitable blade according to the shape and size of the trimmed shoots, and operate the device to make the device have a wider use range with practicality. In the case of a damaged blade, a new blade can be replaced, saving maintenance time and enhancing work efficiency.