147results 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.

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 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 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).

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 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.

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.

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.

This invention relates to the field of landscaping and landscaping pruning, specifically to a landscaping and landscaping equipment for environmental art design. It includes two mobile carts, each with a lifting base mounted on top. A side trimming box is mounted on top of the lifting base, a lifting trimming box is mounted behind the side trimming box, a horizontal trimming box is mounted on top of the lifting trimming box, and an obstacle-avoiding trimming box is mounted in front of the horizontal trimming box. The two obstacle-avoiding trimming boxes abut against each other. The sides of the side trimming box, lifting trimming box, horizontal trimming box, and obstacle-avoiding trimming box facing the middle of the two lifting bases are all open and equipped with chainsaws. Obstacle-avoiding components are mounted on the front sides of the two obstacle-avoiding trimming boxes and the rear sides of the two horizontal trimming boxes. An elastic adjustment component connected to the obstacle-avoiding components is mounted on the horizontal trimming box. Based on the cooperation between the side trimming box, lifting trimming box, horizontal trimming box, and obstacle-avoiding trimming box, this invention allows for the completion of pruning work on a green belt with only one movement along the green belt.

The invention discloses a bamboo forest pole climbing trimming robot which comprises a shell which is approximately of a U-shaped structure and is provided with first mounting parts located on the two sides and a second mounting part located in the middle. The driving assembly comprises a left arm driven wheel module and a right arm driven wheel module which are respectively arranged on the two first mounting parts, and a main driving wheel module positioned on the second mounting part; the holder module is arranged on the upper surface of the shell and is provided with a first driving motor and a second driving motor; the electric saw module is arranged on the holder module; the first driving motor drives the electric saw module to longitudinally turn over, and the second driving motor drives the electric saw module to horizontally rotate; the robot can automatically climb bamboos, detect side branches in the climbing process in real time, automatically trim the side branches, saw bamboo branches and bamboo tips at the top after climbing to a specific height, and perform air positioning and segmentation cutting on bamboos.

The present invention discloses a branch cutting protection device, which relates to the technical field of forestry pruning equipment. The key points of the technical solution are that it includes a main body base, a side support frame arranged at the side end of the main body base, and a handle arranged on the side support frame. The main body base is provided with a track seat, and a cutting blade holder is provided on the track seat; a positioning frame rod is provided on the opposite side of the cutting blade holder, and the track seat is also provided with a film pulling mechanism for pulling plastic wrap and a drug applying mechanism for applying medicine to one side of the plastic wrap when the plastic wrap is pulled out. This device is provided with a cutting blade holder, a first frame rod, and a second frame rod, and ointment is stored inside the first frame rod, and a roll of plastic wrap is placed inside the second frame rod. Then, in conjunction with the arrangement of the film pulling mechanism and the drug applying mechanism, the cutting blade holder can simultaneously pull and stretch the plastic wrap inside the second frame rod and apply ointment to the side of the plastic wrap opposite to the cut surface of the branch during the process of cutting and moving back the branch, thereby enhancing work continuity and improving work efficiency.

There is provided an operating lever mechanism including: a trigger lever to actuate an electric working device; a slide member provided to be able to slide in a direction in which the handle extends, the slide member being configured to lock the trigger lever when the slide member is not operated, and to unlock the trigger lever when the slide member is slid; and a grip lever operated by gripping the handle by one hand, the grip lever being configured not to allow the slide member to slide when the grip lever is not operated, and to allow the slide member to slide when the grip lever is operated. The slide member is slid while the handle is gripped by the one hand and the grip lever is operated, and therefore the trigger lever is unlocked.

The application discloses a fruit tree crown layer branch thinning and pruning tool, which comprises a rack, a gear motor, a belt transmission mechanism and a cutter disc assembly, the gear motor is installed on the rack, the cutter disc assembly comprises a transmission shaft, a fixing assembly, an upper disc cutter, a lower disc cutter and a support disc group, the fixing assembly is installed on the transmission shaft through a first bearing set, and the fixing assembly is fixedly connected with the rack; the gear motor is in transmission connection with the transmission shaft through the belt transmission mechanism; the upper disc cutter is fixedly installed at the top end of the transmission shaft, the lower disc cutter is fixedly installed at the bottom end of the transmission shaft, and the support disc group is installed on the transmission shaft through a second bearing set and located at the side close to the lower disc cutter. The upper disc cutter and the lower disc cutter which are spaced apart can thin and prune the branches in the interior of the fruit tree crown, the upper disc cutter is in non-support cutting, the lower disc cutter is in support cutting under the action of the support disc group, the application range is increased, the stability during cutting is increased, and the cutting quality and efficiency are improved.

A pruner comprising a pruner body, a cutting system, an electric motor (4) adapted to provide driving power for the cutting system, wherein rotation of the electric motor (4) in a first direction is adapted to provide a cutting action, and a control system (5) for controlling the electric motor (4) The pruner further com- prising a blade stuck detection system (9) adapted to detect a blade stuck situation in which the cutting system is not able to reach the closed position, and the control system (5), as a response to detection of the blade stuck situation, is adapted in a recut operation to rotate the electric motor (4) in a second direction opposite the first direction, and then to rotate the electric motor (4) in the first direction to ac- tuate the cutting system towards the closed position.

1. Operating device with handle and motor-driven work device. 2.1. The invention relates to a hand-held, motor-driven work device and to an operating device therefor, wherein the operating device comprises a hand-gripping handle shaft (2), a control element receiving area (3) adjoining the handle shaft (2), and an operating unit acting on the operation of the device, which includes a control element that is movably held on the control element receiving area (3) for actuation by a finger of a hand gripping the handle shaft (2) and has a finger contact area (5) extending along an outer surface (3a) of the control element receiving area (3). 2.2.In the operating device according to the invention, the operating element is a pivoting operating lever (4) which is pivotably mounted on the operating element receiving area (3) about a pivot axis (SA), wherein the pivot axis (SA) extends with a principal directional component (HS) perpendicular to a longitudinal axis (LG) of the handle shaft (2), and wherein the finger contact area (5) has a curved and / or angled profile in a longitudinal extension along the outer side (3a) of the operating element receiving area (3) with a circumferential directional component (UK) and an axial directional component (AK). 2.3. Use e.g. for hand-held, battery-operated garden / forestry tools.

The invention discloses a multipurpose tea fertilizer applicator which comprises a base, a soil loosening device arranged on the base, a fertilizer applying device arranged on the base and a soil covering device arranged on the base. The soil loosening device comprises a supporting block longitudinally connected to the base in a sliding mode, a first rotating shaft is rotationally connected to the supporting block, a soil loosening hob is fixed to the first rotating shaft, and an electric cylinder for driving the supporting block to move up and down is fixed to the base; the soil covering device comprises inclined rods fixed to the vertical rods, a soil covering disc is fixed to the bottom of each inclined rod, each soil covering disc is composed of two circular plates, and the two circular plates are arranged in a cone shape with the large outer end and the small inner end; front driving wheels are arranged on the two sides of the base, and a transmission system is installed on the base. Handles are installed on the two sides of the base. The soil loosening device can be used for loosening soil, oxygen of tea tree roots is sufficient, furrowing can be carried out on the loosened soil, equal-part fertilization can be carried out, all tea trees uniformly absorb nutrients and grow well, and the soil loosening device is worthy of application and popularization.

To provide a technology which enables improvement of users' convenience in a cutting tool provided with a hand guard.SOLUTION: A cutting tool disclosed by the specification includes: a cutting unit; a prime mover configured to drive the cutting unit; a housing including a housing body for holding the cutting unit and housing the prime mover, and a grip which 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.SELECTED DRAWING: Figure 1

The application relates to the technical field of power transmission line maintenance equipment, in particular to an overhead power transmission line live-line tree cleaning cutter which comprises a handheld part and a supporting rod connected in sequence, an upper clamping part and a lower clamping part are fixedly arranged at the top of the supporting rod; a lower supporting plate is fixedly arranged at the bottom of the lower clamping part, an inner plate which is in sliding connection with an outer plate is arranged above the lower supporting plate, an outer plate spring is fixedly arranged between the outer plate and the lower supporting part; the middle of the bottom of the inner plate is fixedly connected with a locking rope; the locking rope is connected with a winding mechanism; the upper clamping part comprises an upper supporting plate, a saw blade group is slidingly arranged below the upper supporting plate, the two ends of the saw blade group are connected with a first steel wire rope, a second steel wire rope and a gear transmission belt, the gear transmission belt is in transmission connection with a motor which is fixedly installed on the supporting rod; all the electric control components of the application are arranged below, the parts for processing tree branches are all operated in a non-electrified mode and will not be interfered by the strong magnetic field of the overhead power transmission line.