47results about How to "Achieve pruning" patented technology

The invention relates to plant pruning equipment, in particular to a hand-push type multifunctional plant pruning machine which comprises a four-wheeled trolley, an electric hedge trimmer and a scissors fork type lifter. The electric hedge trimmer comprises a power portion and knife scissors, a high bedplate which is used for supporting the electric hedge trimmer is arranged on the top of the scissors fork type lifter, the electric hedge trimmer can be of a unidirectional drive or bidirectional drive structure, two vertical columns are arranged at the bottom of the power portion of the electric hedge trimmer, two front legs at the bottom of the scissors fork type lifter are movably supported on guide rails, and two rear legs at the bottom of the scissors fork type lifter are rotatably connected with a bottom plate; a low bedplate is formed by the front end of the bottom plate; side upright plates are hinged to at least one side of the high bedplate, and a plurality of through holes which are used for supporting the electric hedge trimmer and are matched with the columns in an insertion manner are respectively formed in the high bedplate, the side upright plates and the low bedplate. The hand-push type multifunctional plant pruning machine has the advantages that the labor intensity of workers can be relieved, the hand-push type multifunctional plant pruning machine is high in pruning quality, the electric hedge trimmer can be bidirectionally driven, is particularly applicable to pruning green belts and is particularly suitable to be used as a crop harvester or a lawn mower, and the work efficiency can be obviously improved.

The invention discloses a vehicle-borne dwarf closely-planted jujube trimmer which comprises a bearing vehicle and a jujube trimming device which is installed on the bearing vehicle; and the jujube trimming device comprises a rotary base which is horizontally installed in front of the base of the bearing vehicle and can horizontally rotate, a mechanical arm which is installed on the rotary base and can stretch back and forth and move up and down, a cutter mounting rack which is installed at the front end part of the mechanical arm in a hinge manner, a cutter which continuously rotates under the drive of a cutter drive mechanism, a base drive device which drives the rotary base and a mechanical arm drive device which drives the mechanical arm, and the cutter drive mechanism, the base drive device, the mechanical arm drive device and a cutter mounting rack drive mechanism are all controlled by a control system. The vehicle-borne dwarf closely-planted jujube trimmer has the advantages of simple structure, convenience in operation, high operation efficiency, good use effect and high practicable value, and can be used for overcoming the problems that the existing jujube trimming device is not convenient to use and operate, is labor-wasting and time-wasting, has low automation degree and the like.

The invention relates to a gardening tool and provides a pruning device for gardening. The pruning device comprises a round cover, wherein a connector connected with a suspension arm is arranged above the cover, and an annular inner sliding rail and an annular outer sliding rail are arranged inside below the cover; the inner sliding rail is connected with mounting racks which are vertically and symmetrically arranged, the mounting racks on two sides rotate along the inner sliding rail under drive of a drive device, a plurality of telescopic arms are vertically fixed on the inner sides of the mounting racks, a chain wheel for mounting of a chain saw and a corresponding drive motor are arranged at the moving end of each telescopic arm, universal joints allowing adjustment of directions are directly arranged on the drive motors and the chain wheels, the chain saws on the same side are sequentially in drive connection with the chain wheels on the same side, and the chain saws realize vertical cutting. The device has multiple functions, can realize linear pruning by fixing the inner mounting racks and can also be used for pruning tree crowns by rotating the mounting racks around the inner sliding rail; pruning for a particular shape can be realized by adjusting the telescopic degree of the telescopic arms, branches and leaves are collected below and put into concentrated storage, the efficiency is high, little artificial interference is required, and the device has various functions.

The invention discloses bush trimming treatment equipment for roads of sponge cities. The bush trimming treatment equipment comprises two protection plates, wherein an operation table is fixedly connected to the two protection plates, a cabin is arranged on the operation table, tracks are respectively mounted at the bottoms of the two protecting plates, two air cylinders are arranged at the bottomof the operation table and on two opposite surfaces of the two protection plates, a cutting mechanism located in a shield on the same side is mounted on each of three rotating rods, two support blocks are fixedly connected to one opposite surfaces of the two protection plates, and negative pressure fans are respectively arranged on the rear sides of the shields and on the two support blocks. Thebush trimming treatment equipment is reasonable in structure, can perform effective and efficient trimming on bushes, and can collect leaves obtained by trimming, the labor force of personnel is reduced, the investment of the personnel is reduced, trimmed bushes can be sprayed with water, flying dust during trimming of the bushes can be reduced, and influence on periphery environment is reduced.

The invention provides a novel fruit tree pruning shear capable of stretching and drawing back conveniently. The shear includes a mounting frame and a cutting auxiliary mechanism, and the cutting auxiliary mechanism comprises a moving block, a lifting rod, a rotating cylinder, a rotating shaft, a screw rod, an installation block, a nut and a cutter, wherein the moving block is mounted on the mounting frame in a moving up and down mode, and the lifting rod is mounted on the moving block; the rotating cylinder is rotatably installed on the mounting frame, and the inner wall of the rotating cylinder is provided with internal threads; the lifting rod is provided with external screw threads, and the rotating cylinder and the lifting rod are connected with each other in a matching mode through the internal threads and the external threads; the rotating shaft is rotatably installed on the mounting frame, the rotating shaft is provided with meshing teeth, and the rotating cylinder is provided with a meshing groove; the rotating shaft and the rotating cylinder are connected in a matching mode through the meshing groove and the meshing teeth, and the upper part of the lifting rod is horizontally provided with first screw thread holes; the screw rod is installed on the mounting block, and connected with the lifting rod through the first screw thread holes; the nut is installed on the screw rod, and the cutter is mounted on the mounting block. The novel fruit tree pruning shear has the advantages of convenient use, wide range of application, and convenient replacement of a cutting knife.

The invention discloses a multifunctional trimming machine, and belongs to the technical field of garden machines. The multifunctional trimming machine comprises a vehicle body, a first trimming device is installed at the rear portion of the vehicle body, a second trimming device is installed at the front portion of the vehicle body, the first trimming device comprises an upright arm, a swinging arm, an operating platform, a swinging arm locating mechanism, a planar trimming mechanism and a ball forming mechanism, the upright arm is rotatably installed on the vehicle body, and an adjusting sleeve is fixedly installed at the outer part of the upright arm; one end of the swinging arm is hinged to the adjusting sleeve, and a slide shelf which is driven by a linear driving device is slidably installed at the other end of the swinging arm; the operating platform is fixed to the upright arm; the swinging arm locating mechanism comprises a coiling cylinder, a fixed pulley and a steel wire rope; one of the planar trimming mechanism and the ball forming mechanism is detachably installed on the slide shelf. By means of the multifunctional trimming machine, plants are trimmed in the horizontal plane, the tilting plane, the spherical plane, the cambered plane or the vertical plane, and the multifunctional trimming machine has multiple purposes; the working efficiency is high, and workers'labor intensity can be reduced.

The invention provides a portable multifunctional environmental sanitation sweeping device which comprises a control chamber, a dust suction pump, a dust suction pipe, a filter device, a water tank, a dustbin, a green belt trimming device, a pipeline dredging device, a cleaning device, a trolley, a dust suction hood, a dust suction lifting cylinder, a water spraying opening, a water pipe, a water pump and wheels. The wheels are installed on the left and right sides of the lower portion of the trolley respectively. The control chamber is arranged at the upper left portion of the trolley. The pipeline dredging device is installed on the right side of the trolley through a bolt; the green belt trimming device is installed at the right portion of the upper side of the trolley through a bolt. By arranging a purification layer and a screen net, secondary use of cleaning sewage is achieved, the water resource utilization rate is increased, and water pollution is reduced; by arranging a trimmer, the trimming effect is good, and the green belt trimming efficiency is improved; by arranging the belt, the transmission effect is good, overload protection can be achieved, a power motor is not likely to be damaged, use is more convenient, and the device is convenient to use and popularize.

The invention relates to a pair of flower and tree pruning shears, comprising a jagged fixing knife row and a jagged moving knife row, wherein a base body of the jagged fixing knife row is provided with a transverse dovetail groove, the jagged moving knife row is provided with a slide block matched with the dovetail groove arranged on the jagged fixing knife row in a sliding way, and the jagged moving knife row is connected with a reciprocating driving device; the reciprocating driving device is a crank-link mechanism which is driven by a motor, and the motor can be driven by a rechargeable energy storage battery. The flower and tree pruning shears can trim flowers and trees by charging the rechargeable energy storage battery once, have quick and good pruning, are convenient to use and save labor.

The invention relates to the technical field of agricultural machinery, in particular to a honeysuckle pruning vehicle and a pruning method. The honeysuckle pruning vehicle comprises a vehicle body, a seat arranged on the vehicle body and a supporting column arranged on the vehicle body, the vehicle body is provided with rotating wheels, and the rotating wheels are controlled by a steering wheel; the top end of the supporting column is fixedly connected with a transverse rod; and a rotating motor is arranged at the other end of the transverse rod, the rotating motor is connected with a shearing and collecting mechanism through a rotating rod, and a lifting mechanism is arranged on the side face of the vehicle body. The honeysuckle pruning device is simple in structure and reasonable in design, pruning and picking can be integrated while honeysuckle plants are pruned, manual labor is reduced, and pruning efficiency is improved.

The invention relates to the technical field of landscaping, in particular to a maintaining pruning device for landscaping projects. The difficulty of working at high positions can be reduced, the safety of working at high positions is improved, rubbish of grass, leaves and the like after pruning can be recycled, the recycled rubbish can be treated, the phenomenon that grass and leaves are piled everywhere is reduced, the attractive degree of a garden is improved, the working efficiency is improved, the automation degree is improved, and using reliability of the device is improved; the maintaining pruning device for landscaping projects comprises a plate body, a first motor, a first pruning cutter, a first connecting rod, a negative pressure draught fan, a leaf crushing box, a first conveying pipe, a second conveying pipe, a first leaf twisting rod, a second leaf twisting rod, a device box, a second connecting rod, a third connecting rod, a hydraulic pump and an operation frame, wherein a first gear, a second gear and a third motor are arranged in the device box, and protection fences are arranged on the left, front, right and back sides of the top end of the operation frame.

The invention discloses a brush bristle cutting device for processing of a disc brush. The device comprises base foots, a case body, a brush disc fixing device, a linear motor, a brush bristle trimming mechanism, a power distribution cabinet and a slag collecting box, wherein the brush disc fixing device is arranged, a brush disc is clamped between a pressing plate and a brush disc fixing piece bya pressing spring through the pressing plate, and the situation that deflection or unreliable fixation during brush bristle trimming is effectively avoided; a clamping mechanism is arranged, so thatthe clamping connection is simple and convenient, and the working efficiency is effectively improved; the brush disc fixing piece is arranged, so that the relative position of the brush disc fixing piece can be adjusted according to processing requirements, and trimming of brush bristles in different length is realized; the linear motor is arranged, so that the linear motor drives the brush bristle trimming mechanism to move in a reciprocating manner, a plurality of brush discs can be trimmed at the same time, and the trimming efficiency is effectively improved; and the slag collecting box isarranged, so that the trimmed brush bristle slags can be collected, thereby facilitating later processing and guaranteeing the neatness of the working site.

The invention discloses a cutter head of a reciprocating type hair trimmer. The cutter head of the reciprocating type hair trimmer comprises an annular fixed cutter (1), an annular movable cutter (2),a movable cutter rotating disc (311) and a base (4); the annular fixed cutter (1) is provided with inner ring fixed teeth (111) and outer ring fixed teeth (112), the annular movable cutter (2) is matched with the annular fixed cutter (1) in shape and size and is provided with inner-ring movable teeth (211) and outer-ring movable teeth (212), the movable cutter rotating disc (311) is arranged in the annular fixed cutter (1) and can rotate forwards and backwards in a reciprocating manner under the driving of the annular fixed cutter (1), the annular movable cutter (2) is arranged on the movablecutter rotating disc (311), and the base (4) is provided with the annular fixed cutter (1) and the movable cutter rotating disc (311) and forms a hair trimming structure with the annular fixed cutter(1) and the movable cutter rotating disc (311) distributed vertically. The cutter head of the reciprocating type hair trimmer has the advantage of supporting multi-angle hair trimming.

The invention relates to a landscape forming device, in particular to a landscape plant forming device which comprises a top pruning mechanism, two side pruning mechanisms and movable adjusting mechanisms. Plants can be horizontally pruned and can also be pruned in an arc-shaped manner after adjustment, and the device has an adjusting function, can adapt to landscape plants with different widths and heights and can prune corners. The two side pruning mechanisms are mounted on two sides of the top pruning mechanism, and the movable adjusting mechanisms are mounted on the side pruning mechanisms.

The invention discloses a municipal isolation green belt trimming device. The device comprises a cutting disc, a cutting disc, a cutting blade, a lifting mechanism and a bottom plate; the right side of the lower end of the cutting disc is connected with a third rotating rod, a bevel gear A is fixedly mounted on the third rotating rod, the bevel gear A meshes with a bevel gear B fixedly mounted onthe output shaft of a third motor, the left side of a third rotating rod is provided with a second rotating rod, a first rotating rod is disposed at a position where the third rotating rod is symmetrical about the second rotating rod, and the first rotating rod and the second rotating rod are rotatably connected by a transmission belt. The device is novel in design, the vertical height of the cutting blade can be adjusted by the arranged lifting mechanism, thereby achieving trimming of isolation green belts of different height specifications, the transverse distances between the first rotatingrod, the second rotating rod and the third rotating rod are adjusted, the trimming of different width isolation green belts is achieved, and the pruning efficiency of the isolation green belts is improved.

The invention discloses a garden shrub trimming device comprising an engine; the engine is connected with a reduction box; the reduction box is connected with a power cross box through a steel wire flexible shaft; the power cross box is connected with a hedge knife; the hedge knife is fixed on a go-cart through a fixed support, and connected with the fixed support through a telescopic crossbeam rod. The garden shrub trimming device is small in cost, can reduce garden worker workloads, and can improve the garden trimming work efficiency.

The invention discloses automatic assembling equipment for a network cable connector. According to a processing sequence, the equipment sequentially comprises a wire feeding device, a conveying device, a peeling device and a joint assembling device, the wire feeding device sequentially comprises a leading and cutting assembly, a wire clamping assembly and a wire taking assembly according to the machining sequence, the conveying device is provided with a clamp, the wire feeding device is used for cutting a network wire according to a preset length and moving the network wire to the clamp, the peeling device is used for peeling the network wire to expose an internal core wire, and the joint assembling device is used for assembling the core wire and a network cable connector together. The automatic assembling equipment is high in automation degree, automatic assembling of network cable connectors is achieved, network cables are not prone to winding during machining, the production efficiency is high, and the product quality is guaranteed.

The invention discloses wool shearing equipment. The wool shearing equipment comprises a moving number limiting shell, moving wheels and a working plate, the working plate comprises a power transmission mechanism, a base plate working mechanism, a side shell, a neck wool shearing mechanism, a sheep body shearing mechanism and a fixing frame, the upper end surfaces of the moving wheels are fixedlyconnected to the lower end surface of the moving number limiting shell, the working plate is fixedly arranged on the bottom end surface of the inner side of the moving number limiting shell, the powertransmission mechanism is fixedly connected to the inner side end surface of the side shell, and the fixing frame plays a role in fixing sheep. The wool shearing equipment aims at solving the technical problem and has the advantages that automatic wool shearing is realized, and the wool shearing efficiency is improved; and a rear sheep body fixing frame, a sheep neck fixing frame and a front sheep body fixing frame are adjusted to adapt to the size of the sheep, then fixing is conducted, and the situation that the sheep are too large to be pinched or too small to be unable to be clamped can be avoided.

The present invention relates to a trimming device and particularly to a floating dish tobacco seedling trimming device. A technical problem is how to design the floating dish tobacco seedling trimming device which is smooth in trimming and also high in working efficiency. The floating dish tobacco seedling trimming device comprises a base seat, a machine frame, a fixed plate, a force storage mechanism, a trimming mechanism, etc.; and a top part of the base seat is provided with the machine frame, a top part of the machine frame is fixedly provided with a mounting plate, the force storage mechanism is arranged between a front side and a rear side of the top part of the machine frame, the fixed plate is provided with the trimming mechanism, and the force storage mechanism is in a transmission connection with the trimming mechanism. A cooperation of the force storage mechanism and trimming mechanism can trim tobacco seedlings cultivated on floating dishes, trimming is level, work efficiency is high, and guiding assemblies can avoid a thin wire rope from scraping down the tobacco seedlings when moving right to store force, avoid growth state of the tobacco seedlings after the tobaccoseedlings are scraped down and effectively guarantee a cutting effect of the tobacco seedlings.

The invention relates to the technical field of animal husbandry equipment, in particular to equipment special for automatically nailing horseshoes of horses, which comprises a box body, mounting plates are symmetrically and fixedly mounted on the end wall of one side, far away from the ground, of the box body, and clamping devices are arranged on the end walls of the mounting plates and used for clamping the horse legs, and the clamping devices can move to clamp the horse legs, so that horseshoe nailing conveniently; clamping and locking can be achieved through clamping mechanisms, and hurt to people due to the fact that horse legs struggle off is prevented; the movement of a trimming device can be utilized, so that hooves are trimmed, and the horseshoe nailing is performed conveniently; a horseshoe nailing mechanism can move, so that the horseshoes and the hooves can be fixed; the joint of the horseshoes and the hooves can be polished by utilizing the movement of a polishing mechanism; and the horseshoes can be nailed quickly, and the safety of workers is guaranteed.

The invention relates to a branch-pruning pesticide-applying integrated machine for rosa rugosa. The machine comprises a machine frame, a suspension device, a transmission component, two cutting components, a spraying component and a walking component. The machine provided by the invention is mainly applied to branch-pruning and pesticide-applying steps of the rosa rugosa; when the whole machine is used for pruning branches, a four-wheel tractor is used to pull the whole machine to move forwards, the power output shaft of the tractor is connected with a cardan shaft to provide power for the whole machine, an electric generator is driven to work by the transmission component to provide energy for electromotors located at two sides of the whole machine, the electromotors drive disc cutters to move revolvingly, so that stalks of the rosa rugosa are cut; when the whole machine is used for applying a pesticide, the cutting components can be disassembled, so that a width range of the whole machine is reduced, and pesticide applying operation is facilitated; and when the pesticide is applied, a coupling pump performs pressurization to convey the pesticide in a liquid pesticide tank to spray nozzles in the spraying mechanism, and the pesticide is applied to the rosa rugosa through the pesticide spray nozzles. The machine provided by the invention improves working efficiency, realizes the function of multi-purpose of one machine, reduces labor intensity, and reduces production costs.

The invention relates to a handheld gardening pruning device. The handheld gardening pruning device comprises a hollow rod body, wherein a mowing cavity is formed in the front end of the hollow rod body; the rear end of the hollow rod body is communicated with an air draft device; the side wall of the middle part of the hollow rod body is oppositely provided with two openable-closable slag outlets; a strip-shaped opening is formed in the front end of the mowing cavity; a mowing blade for cutting leaves and grass is arranged at a position, corresponding to the opening, in the mowing cavity; a filter screen is obliquely arranged at positions, corresponding to the slag outlets, of the hollow rod body; and the filter screen tilts towards the slag outlet so as to guide leaf slag to be exportedfrom the slag outlets. The handheld gardening pruning device has the advantages of simple structure, higher convenience, safety and flexibility, and can safely and flexibly prune grassland, landscapeshrubs and leaves at high positions.

The invention relates to a greening belt trimming cart. Greening belts are included. The cart is characterized by comprising a trimming cart body and a transferring supporting frame. The trimming cartbody comprises a cart body, supporting wheel groups, pressure guiding wheels, a longitudinal cutting device and a horizontal cutting device. By means of the greening belt trimming cart, mechanical greening belt trimming can be achieved, and trimmed branches and leaves can be collected and cleaned.

The invention relates to the technical field of board cutting, in particular to a high-precision foamed aluminum European layer composite board detection device which comprises a cutting system and a drilling system arranged below the cutting system, and the drilling system comprises a support, a mounting part arranged on one side of the support and a drilling part arranged opposite to the mounting part. The drilling part comprises a main shaft fixedly arranged on the support, a milling cutter rotationally arranged on the main shaft and a protective sleeve arranged on the milling cutter in a sleeving mode, the protective sleeve comprises a protective frame, an air bag connected with the protective frame, a protective cover connected with the air bag and an air blowing ring arranged on the protective cover, and the air bag is communicated with an air hole in the air blowing ring; when the mounting part conveys the plate cut by the cutting system to the drilling system, the milling cutter drills the plate, the plate extrudes the protective cover, so that the protective cover extrudes the air bag, the air bag extrudes air into the air blowing ring and blows the air out of air holes in the air blowing ring, and chippings left by drilling of the plate are removed.

The invention relates to the technical field of power equipment, and discloses an offline branch insulation trimmer special for power supply maintenance which comprises an insulation telescopic rod and a trimming assembly. One end of the insulation telescopic rod is connected with a connecting sleeve, the other end of the insulation telescopic rod is provided with a take-up assembly, a sliding block and a fixing block are arranged in the insulation telescopic rod, and one end of the sliding block is connected with a pull wire. A connection wire is connected to the other end of the sliding block, the pull wire is connected with a take-up assembly, the sliding block is connected with a guide sleeve, and the guide sleeve is sleeved with a first spring. The trimming assembly comprises a trimming shell, a connecting wire wheel, a fixed tool bit and a movable tool bit, the connecting sleeve is rotationally connected with a trimming shell, the connecting wire wheel is connected with a connecting gear, the connecting wire is connected to the connecting wire wheel, and the end part of the movable tool bit is connected with a sector gear. According to the offline branch insulation trimmer special for power supply maintenance, branches at different positions can be pruned and sawed off, use is convenient, the workload is greatly reduced, and the working efficiency is improved.

The invention discloses a pruning device for shrub planting. The pruning device comprises a handcart, wherein a push handle is arranged on one side of the handcart; a support rod is rotationally connected to the top of the side, close to the push handle, of the handcart; a control rod is rotationally connected with the end, away from the handcart, of the support rod; a semicircular guide ring plate is arranged on the side, close to the push handle, of the support rod; the end, close to the guide ring plate, of the control rod, is vertically connected with a control handle; a guide limiting rodis arranged at the end, close to the guide ring plate, of the control handle; a guide groove matched with the guide limiting rod, of the guide ring plate; and a nut is rotationally connected with theend, penetrating through the guide ring plate, of the guide limiting rod. The pruning device is simple in structure and reasonable in design and can prune shrubs at different heights conveniently, pruned leaves can be automatically collected into the handcart, handling of the pruned leaves is facilitated, the labor intensity of an operator is effectively reduced, and the pruning efficiency is improved.

The invention discloses a semi-automatic trimmer. The trimmer comprises a frame, the frame is arranged on a wheel, the frame is provided with a driving device, the driving device is a gasoline engine,the output shaft of the driving device is connected with a driving wheel, the driving wheel transmits the power to a driven wheel, the driven wheel is arranged on a shaft, the shaft is also providedwith a driving small pulley, the driving small pulley transmits power to an intermediate rotating wheel, the intermediate rotating wheel then drives a driven small pulley, the other ends of the drivenwheel, the intermediate rotating wheel and the shaft of the driven small pulley are provided with blades, and the blades are rotated by the drive of the shaft to achieve cutting. There are also two pushers on the frame for providing convenience for a person to push a vehicle by hand. The driving wheel and the driven wheel are connected by a timing belt. The driving small pulley and the intermediate rotating wheel are connected by a timing belt. The intermediate rotating wheel and the driven small pulley are connected by a timing belt. Each shaft is connected to the driven wheel, the intermediate rotating wheel and the driven small pulley by keys.

The invention discloses a maple seedling rapid pruning device for landscape maple planting. The maple seedling rapid pruning device comprises a fifth motor, a second electric push rod, a third motor and a bottom plate. The fifth motor rotates to drive a first lead screw to rotate, then a second sliding block is further driven to move, and thus the position of a second pruning blade is adjusted; afourth motor rotates to drive the second pruning blade to rotate so as to prune the top ends of maple seedlings, and the second electric push rod drives a push rod to stretch out and draw back so as to meet the requirement for adaptive pruning of the top ends of the maple seedlings; a second motor rotates to drive a second lead screw to rotate so as to drive a third sliding block to move on the second lead screw, and thus the height of a first pruning blade is adjusted; and the third motor rotates to drive the first pruning blade to rotate to prune one sides of the maple seedlings, a left pruning mechanism is arranged to prune the other sides of the maple seedlings, manual pruning is not needed, and a large amount of manpower is saved.

The invention relates to a lawn beautification trimmer, comprising a fixing seat, a guide rod is arranged at the upper rear end of the fixing seat, a base plate is mounted on the guide rod in a front and rear sliding manner, and two transverse grooves are opened on the base plate, Sawtooth bars slide horizontally on each transverse groove. A motor is installed on the left side of the fixed seat, and the motor is connected with a compound round roller. Two compound grooves are opened on the compound round roller, and a guide frame is slidably installed in each compound groove. The ends are all connected with auxiliary rods welded on the corresponding sawtooth bars in a front and back sliding manner. The invention has a high degree of automation, through the constant-speed rotation of the compound round roller, the alternate sliding of the two sawtooth bars and the forward sliding of the control substrate are controlled alternately, which can effectively realize the automatic trimming of the grass in a large area of ​​the lawn, and the use control is extremely convenient.