241results about "Motor driven pruning saws" patented technology

An electric work machine with improved workability at high output, configured to cut a work target, is provided. The electric work machine comprises: a working portion configured to cut the work target and a main body including: a housing; a flow path forming portion; a motor; and a control unit, wherein the motor generates rotational power for driving the working portion, the control unit electrically controls rotation of the motor, the flow path forming portion forms an air flow path including a first air flow path and a second air flow path, the first air flow path communicates with an exterior of the housing to allow external air to flow to the motor via the control unit, and the second air flow path communicates with the exterior of the housing so as to allow external air to flow directly to the motor.

A chainsaw includes a housing formed with or connected to at least a handle for a user to hold; a guide plate configured to support and guide a chain, where an end of the guide plate is supported by the housing; a power supply device including at least one battery pack detachably connected to the housing to provide electrical energy for the chainsaw; and a display device mounted to the housing and configured to display a current state of the chainsaw. The display device has a display plane, and the angle β between the display plane and a bottom plane perpendicular to a guide plate plane is greater than or equal to 25° and less than or equal to 75°.

The invention concerns a method for using a computer or computers to generate cut-point data including information indicating a three-dimensional position of a point on a cane of a fruit tree where the cane is to be cut off includes, for each of one or more canes of the fruit tree, acquiring measurement values concerning two or more attributes, including an attribute concerning buds on the cane and an attribute other than buds (S236), based on sensor data of the one or more canes being acquired by a sensor or sensors, determining the one or more canes each as a cane to be removed or a cane to be retained based on the measurement values (S240), and generating the cut-point data for each cane determined as a cane to be removed (S300).

An unmanned aerial vehicle having a petrochemical-based engine powering at least one rotational blade for achieving flight provides for improved vegetation removal. The AEV includes a power transformer connected to the engine, the transformer generating electrical power from the operation of the engine and a plurality of electrically-powered blade units, each unit having a blade powered by a motor. In the AEV, a plurality of electrical connectors provide for transferring the electrical power generated by the transformer to each of the electrical motors of the blade units for causing circular rotation of the corresponding blade such that unmanned aerial vehicle is operative to trim the vegetation using the plurality of blade units powered by the engine.

A cutter machine may include a cutter unit, a prime mover configured to drive the cutter unit, a housing including a housing body and a grip, wherein the housing body holds the cutter unit and houses the prime mover, and the grip extends from the housing body and is configured to be grasped by a user's hand, and a hand guard attached to the housing, configured to protect fingers of the user's hand grasping the grip, and being more deformable than the housing.

A hand-held drive apparatus comprises an apparatus main body including a pruner and a handle rotatably connected to the apparatus main body and including a rotation lock mechanism and a drive operation mechanism. The rotation lock mechanism includes a rotation lock lever movable to a rotation prevention position where the handle is prevented from rotating, and to a rotation allowance position where the handle is allowed to rotate. The drive operation mechanism includes a switch configured to control activation of the pruner and a throttle lever movable to a contact position where the throttle lever pushes the switch and to a non-contact position where the throttle lever is separated from the switch. The throttle lever contacts the rotation lock lever at the rotation allowance position to maintain the non-contact position, and is, when the rotation lock lever is at the rotation prevention position, allowed to move to the contact position.

The invention concerns a method for using a computer or computers to generate cut-point data including information indicating a three-dimensional position of a point on a cane of a fruit tree where the cane is to be cut off includes acquiring information on a cultivation method of the fruit tree (S270), for each of one or more canes of the fruit tree, acquiring a measurement value(s) concerning one or more attributes including an attribute having different evaluation criteria depending on the cultivation method (S234), based on sensor data including information indicating a three-dimensional structure of the one or more canes acquired by a sensor or sensors, determining the one or more canes each as a cane to be removed or a cane to be retained based on the measurement value(s) (S240), and generating the cut-point data for each cane determined as a cane to be removed (S300).

Herein a hand-held electrically powered device (2) is disclosed. The hand-held device comprises a housing (4)), an electric motor (14), and a fan (18). The hand-held device (2) comprises a wall member (20) arranged inside the housing (4) and forming at least part of a wall (22) which delimits a first compartment (24) from a second compartment (26) within the housing (4). The wall member (20) forms an individual element. The wall member (20) is coupled to first and second housing elements. The wall member (20) comprises a through opening (42). The electric motor (14) extends from the first compartment (24) to the second compartment (26) via the through opening (42). The electric motor (14) is supported by the wall member (20).

The invention relates to a process for manufacturing a cutting tool for a vegetation cutting machine, such as a brush cutter or an edge trimmer, comprising the following steps: (a) producing by an injection molding process at a first temperature a preform (200) made of a polyamide mixture comprising at least one homopolymer and at least one copolymer; (b) stamping the preform at a second temperature lower than the first temperature so as to cause polymer chains of the polyamide mixture to extend according to at least two different directions, thereby forming a planar piece (201), (c) cutting the planar piece (201) to define at least one cutting edge of the cutting tool (2).

An outdoor tool includes a powerhead unit and an attachment unit. The powerhead unit includes a motor, a housing assembly housing the motor and including a handle portion, and a first shaft segment supported within the housing assembly and extending along a shaft axis to a first connecting portion. The powerhead unit also includes a first driveshaft segment coupled to the motor and extending within the first shaft segment, a switch supported within the handle portion and operable to activate the motor, and a trigger assembly. The trigger assembly includes a trigger configured to selectively actuate the switch, a first lock-off member, and a second lock-off member. The attachment unit is selectively couplable to and powered by the powerhead unit. The attachment unit includes an operational unit configured to be driven by the motor, a second shaft segment, and a second connecting portion.

The invention concerns a method for using a computer or computers to generate cut-point data including information indicating a three-dimensional position of a point on a cane of a fruit tree where the cane is to be cut off includes, for each of one or more canes of the fruit tree, acquiring measurement values concerning two or more attributes based on sensor data of the one or more canes being acquired by a sensor or sensors (S230), acquiring information on priority levels of the two or more attributes (S250), determining the one or more canes each as a cane to be removed or a cane to be retained based on the measurement values and the priority levels (S252), and generating the cut-point data for each cane determined as a cane to be removed (S300).

A work tool and transmission system thereof. The transmission system comprises: a first shaft (250) and a second shaft (350), a near end (351) of the second shaft having a first mating part; a shaft coupler (600), a far-side part (620) of the shaft coupler having a second mating part matched in shape to the first mating part; and a coupling mechanism capable of directly or indirectly applying a coupling force to at least one of the first shaft, the second shaft and the shaft coupler; when the far-side part of the shaft coupler is aligned with the near end of the second shaft in the circumferential direction, the coupling force forces the first mating part to engage with the second mating part, so that the shaft coupler transmits rotational movement of the first shaft to the second shaft. The work tool comprises: a transmission system; a motive power head transmission-connected to the first shaft (250); and a working head transmission-connected to the second shaft (350).

Electric work equipment includes a body case, a work tool formed to protrude forward from a front portion of the body case, a motor housed in the body case and configured to drive the work tool, a battery removably disposed in the body case and configured to supply power to the motor, a handle protruding from the body case and configured to be gripped, a trigger lever disposed on a lower surface of the handle and configured such that power is supplied from the battery to the motor when pulled, and a switch panel disposed on an upper surface of the handle and including a power switch, the power switch being configured to make the motor operable when turned on and to stop operation of the motor when turned off, and is inclined downward from a right to left side thereof or from the left to right side thereof.

According to examples, a power tool may include a chassis and a guide bar mounted to the chassis, the guide bar having a central axis. The power tool may also include a handle attached to the chassis above the central axis of the guide bar and a motor housed within the chassis to drive a chain around the guide bar, in which the motor is positioned beneath the central axis of the guide bar and a central axis of the motor is at a certain angle with respect to the central axis. The handle, the motor, and the battery pack mount may be positioned with respect to the chassis to cause the power tool to substantially be balanced in both lateral and longitudinal directions about a location near the trigger mechanism when the battery pack is mounted to the battery pack mount.

The invention provides a pruning device for overhead lines of 10 kilovolts and below, belongs to the technical field of electric power, and is used for solving the problem of pruning branches near the overhead lines of 10 kilovolts and below. The pruning device comprises a movable chassis, a mechanical arm and a pruning saw. The mechanical arm is hinged to the movable chassis. The pruning saw comprises a supporting assembly, a saw blade mechanism, a driving mechanism, a lubricating mechanism and a hydraulic control valve set. The output end of the hydraulic control valve set is connected to the saw blade mechanism, the driving mechanism and the lubricating mechanism. The pruning device can continuously perform large-area sawing operation, and is simple to operate, high in efficiency and high in adaptability.

The invention relates to a multifunctional electric remote control tea tree platform mowing machine which is characterized in that power shafts of four mowing motors form a straight line and respectively penetrate through mounting bin through holes, the power shafts of the first motor and the third motor are sleeved with short shaft sleeves, and the power shafts of the second motor and the fourth motor are sleeved with long shaft sleeves; a motor power shaft penetrates through central holes of the four disc dense-tooth saw blades, then the motor power shaft is sleeved with a shaft sleeve pressing plate, and finally the disc dense-tooth saw blades are screwed and fixed through nuts, five sharp parts are arranged on the edge of an opening of the motor installation bin, three sharp parts are located at the overlapping positions of the adjacent disc dense-tooth saw blades, and the other two sharp parts are located on the outer sides of the disc dense-tooth saw blades at the two ends. The walking speed is controlled, so that the disc dense-tooth saw blade can effectively cut stumps and branches of tea trees. The blocking protruding part in front of the disc dense-tooth saw blade effectively avoids the situation that the tea tree pile branches are cut by the two saw blades at the same time, and the motor is blocked. A 48-volt lithium storage battery is adopted as a power supply, and continuous operation can be carried out for four hours under the normal condition.

The present invention relates to a hinge (10) for a hand tool, in particular for a tree trimmer or the like. The hinge (10) comprises a first hinge part (12) including a first half-shell (16) and a second half-shell (18), a second hinge part (14) pivotable relative to the first hinge part (12) around a swivel axis (54) of the hinge (10) and a rotary knob (20) arranged rotatable at the first hinge part (12) and rotatable around the swivel axis (54). A push element (22) is linearly moveable along the swivel axis (54) inside the first hinge part (12). The push element (22) is pressed or pressable against a contact surface (42) of the second hinge part (14) by rotating the rotary knob (20), so that the hinge (10) is locked or at least rough-running.

The invention relates to a hinge (10) for a hand tool, in particular for a tree trimmer or the like. The hinge (10) comprises: a first hinge part (12) comprising a first half-shell (16) and a second half-shell (18); a second hinge part (14) pivotable relative to the first hinge part (12) about a pivot axis (54) of the hinge (10); and a rotary knob (20) arranged to be rotatable at the first hinge part (12) and to be rotatable about the rotation axis (54). A thrust element (22) is linearly movable inside the first hinge part (12) along the axis of revolution (54). By rotating the rotary knob (20), the pushing element (22) is pressed against or can be pressed against a contact surface of the second hinge part (14) such that the hinge is locked or at least unsmooth in operation.

A power tool includes a housing, a driving device, a cutting device and an oil storage device. The driving device, the cutting device and the oil storage device are all mounted in the housing. The driving device may drive the cutting device to work, and the oil storage device provides lubricating oil to the cutting device. The oil storage device includes an oil reservoir and an oil pump, the oil reservoir is connected with the oil pump through a first oil pipe, and a filtering structure is arranged between the first oil pipe and the oil reservoir to filter the lubricating oil entering the oil pump from the oil reservoir. The oil reservoir provides lubricating oil to the cutting device through the oil pump. The oil storage device of the disclosure may effectively improve a clogging problem of the oil pump and improve a duration life of the power tool.

The pruning device for forest tending comprises a pruning mechanism, a lifting rod and a pruning driving mechanism, the pruning mechanism is used for fixing and pruning branches, the pruning mechanism is slidingly installed on the lifting rod, the height of the pruning mechanism can be adjusted according to the height of the pruned branches, the pruning driving mechanism is fixed on the lifting rod and connected with the pruning mechanism, and the pruning mechanism is driven to lift by the pruning driving mechanism, the branches are fixed and pruned.

Device (1) for cutting branches and / or shoots of plants, comprising a cutting device (3) and a handle device (5), wherein the cutting device (3) is designed in two parts and has a first cutting head (7) and a second cutting head (9), and where the first cutting head (7) is arranged at a first distance from a handle (5) of the device and the second cutting head (9) is arranged at a second distance from the handle (5) is arranged, wherein the distance between the first and the second cutting head (7, 9) is variable, characterized in that an actuator (17) is included which is connected directly or by means of a connecting element to the first and / or the second cutting head (7, 9) such that the first distance of the first cutting head (7) and / or the second distance of the second cutting head (9) to the handle device (5) is variable, wherein the first cutting head (7) comprises n knife holders (23) and the second cutting head (9) comprises n-1 knife holders (25), with n = 2, 3, 4, 5, 6, 7, 8, 9 or 10 and the knife holders (23,25) of the first and second cutting heads (7,9) are arranged offset from each other.

A remote-controlled chainsaw comprises fixing means e.g., a chain 2, attached to a triangular baseplate for fixing to a tree 1. One or more supports 3 are connected to the chain 2 and a pair of rails 4 is mounted on the supports 3 with a control platform 7 movably mounted on the rails 4. There may be a separate chain tensioner. A chainsaw holder 5a is mounted on the control platform 7 and a chainsaw 5 is connected to the holder, with a chainsaw blade 6 extending therefrom. A motor moves the control platform 7 relative to the pair of rails 4 to effect cutting the tree. Following an initial partial cut, the rails may be manually or motor tilted about a horizontal axis 10 to enable an inclined cut to form a notch or birdmouth in the tree stem. The saw may then be rotated and moved on the rails to the other side of the tree to perform a felling cut. Allows remote cutting to improve safety when felling diseased trees e.g., with chalara, ash-dieback without the need for heavy equipment.

A field-configurable apparatus for different aerial applications is provided. The field-configurable apparatus attaches to an aerial boom on a mobile carrier. The apparatus can perform rapid semi-precise cutting of vegetation. Additionally, the apparatus can perform more precise trimming of one or more areas (e.g., limbs) and optionally use a limb clamp to prevent cut limbs / vegetation from arbitrarily falling on objects below the cutting area. Still further, the apparatus can have a grapple or similar device attached to the end of the boom for use in relocating debris or for loading debris. Other industrial applications are also possible (e.g., commercial water blasting, deicing of planes, etc.). In each configuration, the apparatus comprises one or more rotatable or pivoting couplings to allow for rotation about one or more axis and therefore allow precise manipulation of an aerial tool assembly from an operator in the vehicle or on the ground.

The invention relates to a product used in the agricultural sector for pruning, cutting, and shaking operations. This product allows multiple tasks to be performed with a single machine by using interchangeable saw and shaking heads attached to a fixed body.

A garden multitool, which relates to a power tool, including a working assembly, the working assembly having an electric motor and a working head, the electric motor actuating the working head to swing back and forth on a working plane; the garden multitool further includes a shaft and a handle assembly, the working assembly being attached to a front end of the shaft, the handle assembly being attached to a rear end of the shaft, a lengthwise direction of the shaft being parallel to the working plane. By appropriately improving the structure of the garden multitool, the functional utilities of the swing power tool are reasonably extended, which helps to enhance user experience.

The invention relates to the technical field of forestry machinery, and discloses a tree-climbing pruning robot which comprises an upper holding mechanism, a lifting mechanism, a lower holding mechanism and a pruning mechanism. The lifting mechanism comprises an upper mounting base, a first lifting connecting frame, a second lifting connecting frame and a lower mounting base, the middle of the first lifting connecting frame is hinged to the inner side of the middle of the second lifting connecting frame, the upper portion of the first lifting connecting frame is hinged to the upper mounting base, and the lower portion of the first lifting connecting frame is in sliding fit with the lower mounting base; the upper part of the second lifting connecting frame is in sliding fit with the upper mounting seat, and the lower part is hinged with the lower mounting seat; the lower mounting seat is connected with a lower holding mechanism, the upper mounting seat is connected with an upper holding mechanism, the upper holding mechanism is connected with a trimming mechanism, and the trimming mechanism is connected with a laser scanning mechanism. The ascending or descending distance can be adjusted so that the upper holding mechanism or the lower holding mechanism can move to the flat position of a trunk, the situation that the gravity center is affected due to the fact that the convex position of the trunk is held is avoided, and the overall stability of the robot is improved.

The invention provides an operating rod mechanism of an electric hand-held working machine, which solves the problem that in the operating rod mechanism of the electric hand-held working machine, the safety standard of unlocking operation is met, and the same degree of operability as that of an engine can be ensured. The operation rod mechanism comprises a trigger rod used for starting the electric working part; the sliding part is arranged in the extending direction of the handle in a sliding mode, locks movement of the trigger rod when not in operation, and releases locking of the trigger rod through sliding operation; a grip lever which is operated by gripping the handle with one hand, and which is configured so that the sliding member cannot be slidably operated when not being operated and so that the sliding member can be slidably operated when being operated; wherein, in a state in which the handle is held by one hand to operate the holding rod, the locking of the trigger rod is released by operating the sliding part in a sliding manner.

A power tool includes an elongated shaft forming a handle and a tool head located at one end of the handle. The tool head includes a working element and a driven shaft configured to drive the working element. A powerhead located at an opposite end of the handle and includes an input shaft. A driveshaft is coupled between the tool head and the powerhead. The driveshaft has a first driveshaft portion rotatably driven by the input shaft and a second driveshaft portion coupled to the first driveshaft portion and the driven shaft. The second driveshaft portion is driven by the first driveshaft portion to transfer torque from the powerhead to the working element. One of the first driveshaft portion or the second driveshaft portion is constructed of a non-conductive material or both of the first driveshaft portion and the second driveshaft portion are constructed of a non-conductive material.

The application belongs to the technical field of felling and branch cutting, and particularly relates to a self-propelled tree sawing robot, which comprises a robot body, an electric saw, walking wheels, a support and a hoisting device. The electric saw is arranged on the robot body through a mechanical arm. The walking wheels are electric walking wheels, and are located above high-voltage wires and walk along the high-voltage wires. The support is rotatably arranged on the robot body, and is driven to rotate by a first driving mechanism. The walking wheels are arranged on the support, and the support drives the walking wheels to move close to or away from the high-voltage wires. The hoisting device is detachably arranged on the robot body through a connecting piece, and is located below the walking wheels. The ropes of the hoisting device and the walking wheels are located on both sides of the high-voltage wires, and the rope ends of the ropes are connected to the ropes after winding around the high-voltage wires. The self-propelled tree sawing robot skillfully realizes convenient on-line and off-line of the self-propelled tree sawing robot, and prunes branches along the existing high-voltage wires.