312results about "Motor driven pruning saws" patented technology

The present disclosure relates to a battery-powered chainsaw (1) comprising a cutting tool in the form of a saw chain (4) running on a guide bar, a front handle (7) at least partially extending transverse to the elongation of the guide bar and a rear handle (5) extending, at least partially, approximately in the elongated direction of the guide bar. A battery-operated heating unit comprising a first heating element (15) in the rear handle, a second heating element (13) in the front handle, and a temperature sensor (17) located in either of the rear or front handle. The heating unit (19) is configured to provide power to the first and second heating element based on a reading from the temperature sensor (17). Upon activation, a temporary power boost is provided to the first and second heating elements and subsequently a steady state power, lower than the power of the power boost.

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 discloses a nursery stock trimmer with an adjustable wheel tread for forest cultivation and a use method thereof. The nursery stock trimmer comprises a movable cart; the moving mechanism is arranged on the moving cart, the moving mechanism comprises a moving part and a rotating part, the moving part is arranged on the moving cart, the rotating part is arranged on the moving part, the fixed motor and the adjusting motor are started at the same time, and the trimmer body is adjusted to move to a proper height through transmission; the pruning machine can be adjusted according to the heights of different nursery stocks, through cooperation of the moving mechanism, the pruning machine body and the adjusting mechanism, moving wheels are turned over to the top of the pruning machine body, the angle of the pruning machine body is adjusted through a rotating motor, the side faces of the nursery stocks are pruned, and in the transportation process, the adjusting mechanism and the pruning machine body can be stored; and through rotation and transmission of the swing motor, the swing rod drives the fixed claw to swing, broken branches in front of the movable cart are cleaned, the movable cart is convenient to move, and the working efficiency is improved.

The invention belongs to the technical field of distribution network electric power operation and maintenance equipment, and particularly relates to an intelligent high-altitude branch pruning device and a pruning method.The pruning method comprises the following steps that an electric impact high branch saw is fixedly installed at the front end of a mechanical arm of a robot walking along the line, and remote control is adopted; the along-line walking robot is in adsorption butt joint with the lifting unmanned aerial vehicle through the electromagnet, the unmanned aerial vehicle lifts the along-line walking robot to the overhead wire to be placed, the along-line walking robot is remotely controlled to advance and retreat along the overhead wire, and the robot arm is controlled to complete all-angle operation. And starting and stopping of the lopper saw operation are controlled and implemented. The along-line walking robot works along the line, electric shock accidents caused by high-altitude close-range contact of operators with high-voltage wires are avoided, high-altitude falling is prevented, the life safety of the operators is guaranteed, the labor intensity is reduced, and the automation level of distribution network maintenance is improved.

The invention relates to an electric tool which comprises a machine shell and a locking assembly, the machine shell is provided with a battery pack installation part, the battery pack installation part is detachably connected with a battery pack, and the battery pack is configured to provide electric energy for the electric tool; the locking assembly comprises a spring bolt, a spring bolt receiving part and a triggering piece. The spring bolt and the trigger piece are movably arranged on one of the machine shell and the battery pack, and the spring bolt receiving part is arranged on the other one of the machine shell and the battery pack. The spring bolt is jointed with the spring bolt receiving part, so that the battery pack is locked relative to the shell; and the spring bolt is separated from the spring bolt receiving part, so that the battery pack is unlocked relative to the shell. And the electric tool is configured to directly or indirectly drive the spring bolt to move relative to the spring bolt receiving part through at least two different actions generated by the triggering piece when external force is applied to the triggering piece, so that the battery pack is unlocked relative to the shell. The number of the triggering pieces is configured to be at least two.

A working apparatus has a manual operating region, a tubular part extending away from the manual operating region, and an electric cable arrangement in the tubular part. The working apparatus includes a rod-shaped cable holder, which is inserted into and held in the tubular part and has a cable holding arrangement, by which the cable arrangement is held in a pre-mounted manner on the cable holder. An assembly method secures the cable arrangement on the cable holder by the cable holding arrangement, and inserts the cable holder, with the cable arrangement held thereon, into the tubular part. The working apparatus may be a battery-operated, hand-guided garden or forestry working apparatus.

The invention relates to an electric tool and an unlocking method of a battery pack connected with the electric tool in a matched mode, the electric tool comprises a machine shell and a locking assembly, the machine shell is provided with a battery pack installation part, the battery pack installation part is detachably connected with the battery pack, and the battery pack is configured to provide electric energy for the electric tool; the locking assembly comprises a spring bolt, a spring bolt receiving part and a triggering piece. The spring bolt and the trigger piece are movably arranged on one of the machine shell and the battery pack, and the spring bolt receiving part is arranged on the other one of the machine shell and the battery pack. The spring bolt is jointed with the spring bolt receiving part, so that the battery pack is locked relative to the shell; and the spring bolt is separated from the spring bolt receiving part, so that the battery pack is unlocked relative to the shell. According to the electric tool, external force is applied to the triggering piece, at least two different actions generated by the triggering piece directly or indirectly drive the spring bolt to move relative to the spring bolt receiving part, and unlocking of the battery pack relative to the machine shell is achieved.

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).

The invention provides a multidirectional adjustable fruit tree branch and leaf pruning device, and relates to fruit tree branches and leaves, the multidirectional adjustable fruit tree branch and leaf pruning device comprises a machine shell, a mounting cavity is formed in the machine shell, a driving structure is arranged in the mounting cavity, a connecting column is inserted into one end of the machine shell, and the surface of the connecting column is sleeved with a fixing cover used for being in threaded assembly with the machine shell; a connecting structure is arranged in the connecting column, one end of the connecting structure is connected with a trimming saw blade, and the trimming saw blade can be in transmission connection with the driving structure under the action of the connecting structure. According to the fruit tree pruning device, through the arranged driving structure, the adjusting motor can be started to enable the output end of the adjusting motor to drive the gear to rotate when facing the branch directions of different fruit trees, the pruning angle of the pruning saw blade is adjusted in cooperation with rotation of the gear ring, and actual application of operators is facilitated.

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 relates to the technical field of pruning appliances, and discloses an automatic pruning machine for edible roses, which comprises a main body frame, a first connecting plate is fixedly connected to the rear side of the top of the main body frame, a hydraulic cylinder is rotatably connected to the top of the first connecting plate, and the bottom end of the hydraulic cylinder penetrates through and extends to the bottom of the first connecting plate. A gear is fixedly connected to the bottom end of the hydraulic cylinder, a rack is connected to the left side of the gear in an engaged mode, a second air cylinder is arranged on the front side of the rack, a fixing sleeve is fixedly connected to the output end of the hydraulic cylinder, and a connecting ring is fixedly connected to the bottom end of the fixing sleeve. By adjusting the positions of the sawtooth cutting strip and the saw disc in the height, horizontal and front-back directions, the trimming requirements of rose branches of different positions and forms are met, the machine is driven through the crawler belt, the machine better adapts to the terrain, automatic trimming of edible roses is achieved, a traditional manual trimming mode is replaced, the trimming efficiency is improved, and the production cost is reduced. And the labor intensity of workers is reduced.

In a combination of a sprocket arrangement (128) and a saw chain (16), a sprocket tooth spacing (TI) between consecutive sprocket teeth (40) relates to a drive link spacing between consecutive drive links (30) of the saw chain (16) such that the guide teeth (42) of two or more drive links (30) may enter between a pair of consecutive sprocket teeth (40).

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).

The present invention provides an apparatus for self-aligning pruning of trees. The apparatus includes a frame and a cutting tool that is attached to the frame. A power supply is connected to the cutting tool and there is a means for controlling the power supply. A support apparatus such as an Unmanned Aerial Vehicle is attached to the frame. The support apparatus can be controlled remotely such that it can position the frame horizontally and vertically. The frame includes at least one guide leg that is angled down and away from the cutting tool and the frame is connected to the support apparatus such that the frame can rotate relative to the support structure in the horizontal plane.

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).

The present invention provides a handheld working machine including an operating rod held with a hand to perform work and a working machine unit provided on a head end of the operating rod. The operating rod includes a straight part extending in a direction of extension of a working device of the working machine unit and a curved part connecting the straight part to the working machine unit.

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).

A power tool apparatus includes a housing, a control board, a working part, a motor and a fan. The housing has a battery pack cavity. The battery pack cavity is configured to install a battery pack. The control board is disposed within the housing. The working part is disposed on the housing. The motor is disposed within the housing. The motor drives the working part to operate. The air duct is disposed within the housing. The air duct is configured for heat dissipation of the power tool apparatus. The fan is fixedly connected to an output shaft of the motor. The fan is configured to drive air to flow along the air duct when rotating. The housing has at least two air inlets and at least one first air outlet. The air duct is disposed between the air inlets and the first air outlet.

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.