The present invention provides a working device, comprising a working portion and a grip portion. The working portion comprises a driving component and a working component driven by the driving component. The driving component comprises an electric motor and an electric motor housing. The electric motor housing comprises a housing body and a connecting portion located on a rear side of the housing body. At least one air intake hole is formed in the connecting portion, and is in communication with an inner cavity of the housing body. In the working device of the present invention, the driving component is provided with an air intake hole to allow air for cooling an electric motor to enter the interior of the driving component. Further, the working portion can be rotated with respect to the grip portion so as to have an increased working angle, and it can also be ensured that at least one air intake hole is always in communication with the outside when the working portion is in any angular position, so that the use efficiency of the electric motor can be ensured under any use condition.

A working machine may include a pipe including: an outer pipe; an inner pipe inserted in the outer pipe; a pipe holder fixed to the outer pipe; and a stopper disposed inside the outer pipe. The pipe holder includes a wall part. The inner pipe includes a fixing hole having a longitudinal direction in a circumferential direction of an outer circumferential surface of the inner pipe. A rear surface of the fixing hole has a shape extending along a plane orthogonal to a front-rear direction. The stopper includes: an abutting part that abuts the wall part from behind when the inner pipe extends to a maximum length relative to the outer pipe; and a protruding part configured to fit in the fixing hole of the inner pipe. A rear surface of the protruding part has a shape extending along a plane parallel to the rear surface of the fixing hole.

An air leaf stripping system and an agricultural machine equipped with such system. The system is used in viticulture for stripping leaves from vinestocks. The system can be mounted on a tractor and includes adjustment mechanism consisting of a rotary joint and coupling for rotating a housing and includes an arm that has a main longitudinal axis and includes the supply line and an attachment part intended to be mounted on the agricultural machine directly or via a frame. The supply line-is guided along the attachment part and connected to the leaf stripping members through a junction in the housing via the rotary joint. The rotating member being arranged so that the housing can be rotated about a first axis passing through the junction and substantially perpendicular to the main longitudinal axis of the arm, between at least two separate angular positions relative to the first axis.

Problems to be Solved To provide a control apparatus for an unmanned aerial vehicle and an unmanned aerial system capable of pruning a tree by appropriately specifying a pruning position to prune a branch of the tree and further adjusting a shape of the tree. [Solution] A control apparatus 3 for an unmanned aerial vehicle 2 according to the present invention includes a tree shape information generation section 312 capable of generating tree shape information of a target tree T1 targeted for pruning by using two or more tree images P of the target tree T1 taken from different directions and a shape generating neural network N1; a pruning position specifying section 316 capable of specifying a pruning position of the target tree T1 by using the tree shape information; an operation control section 318 capable of controlling a flight state of the unmanned aerial vehicle and an operation of the pruning structure in accordance with the pruning position P; a tree shape evaluation receiving section 313 capable of receiving a tree shape evaluation related to the tree shape information; and a shape learning section 314 capable of causing the shape generation neural network N1 to machine-learn a shape of the tree on the basis of the tree images, the tree shape information, and the tree shape evaluation.

A power saw for pruning high grown trees is disclosed. The power saw is configured to couple to an extension pole that allows the power saw to reach high hanging targets. The power saw includes a housing having a wireless receiver and a motor subassembly contained therein. A housing battery is electrically coupled to the wireless receiver. A front handle is coupled to the housing. The front handle comprises a faceplate and a pole aperture disposed at a terminal end. A blade is configured to extend through a blade slot of the faceplate wherein the blade is coupled to the motor subassembly. An extension pole is configured to couple to the pole aperture of the front handle. The blade is configured to move upon actuation of a wireless remote control. The wireless remote control includes a wireless transmitter and is configured to allow both hands of a user to handle the extension pole while in operation.

A cutting tool including a housing, the cutting tool having a longitudinal extension from the housing to a cutting element provided at the distal end of the cutting tool. The housing is provided with a rigid impact protecting member having at least a rigid portion, the rigid portion being transverse to the longitudinal extension of the cutting tool and provided at a distance from the housing such that the housing is protected from an impact.

A pruning system includes a cutting head comprising upper and lower cutting rings positioned along a bottom portion of one or more tubes. At least one cutting ring is adapted to rotate in a circular motion, while the other cutting ring may be adapted to remain stationary. A vacuum may be applied to suction target plant material, and the cutting head may be lowered toward the target plant material. As adjacent blades from the upper and lower cutting rings are separated in an open position, plant material may be collected in the opening defined by the adjacent blades. As the blades converge, the opening may close, and plant material collected in the opening may be severed from the plant. System variables, may be adjusted to accommodate different types of plant material. The pruning system may be used with a vision system to remove materials from plant beds in a field.

A cutting blade applied to a reciprocating-type cutting device (1) including a pair of cutting blades (2, 3) that are reciprocated in a state of being superposed on each other to cut an object to be cut. The cutting blade includes: a base element (21); and a plurality of blade bodies (22) jutting from the perimeter of the base element (21), the plurality of blade bodies (22) each having a sliding surface (24) that slides over a mating blade body (32). At least some of the plurality of blade bodies (22) each have a high-hardness section (22A) formed in a part including at least both ends (24a, 24b) in a sliding direction of the sliding surface (24), the high-hardness section (22A) having hardness higher than the hardness of the other part. The thickness of the high-hardness section (22A) is set to 10 μm or more and 200 μm or less.

The present disclosure provides a transmission assembly and a garden tool. The transmission assembly is configured to connect a drive assembly and a garden work assembly. The transmission assembly comprises a casing and a first transmission component and a second transmission component accommodated in the casing; the first transmission component and the second transmission component are engaged with each other; the first transmission component comprises a first gear and a second gear engaged with each other; a gear shaft of the first gear is disposed at an angle with respect to a gear shaft of the second gear; and the second transmission component comprises a third gear able to rotate coaxially with the second gear and a fourth gear engaged with the third gear. With two levels of transmission components provided in the transmission assembly of the present disclosure, the output power of the garden tool can be controlled effectively, and the cost for using and producing the garden tool of the present disclosure are reduced while ensuring that the garden tool can be used normally.

[Problems to be Solved] To provide an unmanned aerial vehicle capable of achieving both of equipping a pruning structure capable of pruning trees and enhancing safety. [Solution] An unmanned aerial vehicle 2 according to the present invention includes a pruning structure 23 capable of pruning a tree; a housing structure 24 capable of housing the pruning structure 23 inside; and a state control section 212 capable of controlling the state of the pruning structure 23 between a housed state in which the pruning structure 23 is housed inside the housing structure 24 and an exposed state in which the pruning structure 23 is exposed to the outside of the housing structure 24, wherein the state control section 212 can control the state of the pruning structure 23 to the housed state on landing. The state control section 212 preferable to control the state of the pruning structure 23 to the exposed state when a distance from the unmanned aerial vehicle 2 to a target tree to be pruned equal to or shorter than the predetermined distance, and to control the state of the pruning structure 23 to the housed state when a distance from the unmanned aerial vehicle 2 to the target tree longer than the predetermined distance.