CN114931018B

CN114931018B - Efficiency of work is improved lawn mower

Info

Publication number: CN114931018B
Application number: CN202210437885.6A
Authority: CN
Inventors: 吴维东
Original assignee: Suzhou Aiweikesi Garden Equipment Co ltd
Current assignee: Suzhou Aiweikesi Garden Equipment Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2023-03-24
Anticipated expiration: 2042-04-25
Also published as: CN114931018A

Abstract

The invention relates to the technical field of mowers, and particularly discloses a mower capable of improving working efficiency, which comprises a shell; the bottom of the shell is rotatably connected with a rotating shaft; a cutting knife is installed at the bottom of the rotating shaft; a power mechanism for driving the rotating shaft to rotate is arranged in the shell, and a protective shell is fixedly connected to the bottom of the shell; the protective shell is sleeved outside the rotating shaft, and a pair of first sliding grooves is formed in the inner side wall of the protective shell; blade grooves are formed in the side walls of the first sliding grooves; the pair of first sliding grooves are connected with sliding blocks in a sliding mode; a blade is fixedly connected to the side wall of the sliding block close to the blade groove; the side wall of the sliding block, which is far away from the blade, is provided with an extrusion mechanism; a cam is fixedly connected to the outer side wall of the rotating shaft; the cam is matched with the extrusion mechanism; the weeds wound outside the protective shell are cut by the arranged blades, so that the possibility that the weeds are wound on the anti-rotation shaft and the cutting knife is reduced, and the number of times of stopping and cleaning the weeds is reduced.

Description

Efficiency of work is improved lawn mower

Technical Field

The invention relates to the technical field of mowers, in particular to a mower capable of improving working efficiency.

Background

The lawn mower is an instrument for trimming a lawn, and a power source drives a blade to rotate so as to cut weeds.

When the cutting knife cuts weeds in the prior art, the rotating shaft is directly exposed in the external environment, the weeds are easily wound on the outer side walls of the rotating shaft and the cutting knife in the rotating process of the rotating shaft, the normal work of the rotating shaft is easily influenced when too many weeds are wound on the rotating shaft, and the working efficiency of mowing work is reduced.

Disclosure of Invention

The application provides an improve work efficiency's lawn mower has the effect of cutting off winding weeds, reduces the possibility of weeds winding rotation axis and cutting knife to reduce the number of times that the shut down cleared up weeds, promote the work efficiency of cutting work.

The application provides a pair of improve work efficiency's lawn mower adopts following technical scheme:

a mower for improving working efficiency comprises a shell; the bottom of the shell is rotatably connected with a rotating shaft; a cutting knife is installed at the bottom of the rotating shaft; a power mechanism for driving the rotating shaft to rotate is arranged in the shell, and a protective shell is fixedly connected to the bottom of the shell; the protective shell is sleeved outside the rotating shaft, and a pair of first sliding grooves is formed in the inner side wall of the protective shell; blade grooves are formed in the side walls of the first sliding grooves; the blade groove penetrates through the outer side wall of the protective shell; the pair of first sliding grooves are connected with sliding blocks in a sliding mode; a blade is fixedly connected to the side wall of the sliding block close to the blade groove; the side wall of the sliding block, which is far away from the blade, is provided with an extrusion mechanism for pushing the sliding block to move in the first sliding groove; a cam is fixedly connected to the outer side wall of the rotating shaft; the cam is matched with the extrusion mechanism.

Through adopting above-mentioned technical scheme, when power unit drive rotation axis rotates, the cutting knife cuts weeds, carry out the separation to outside weeds through set up the protecting crust in the rotation axis outside, the rotation axis rotates the in-process and drives the cam and rotate, the cam rotates in-process and contacts with extrusion mechanism, promote the slider through extrusion mechanism and slide along first spout, the slider slides the in-process and makes the blade stretch out from the blade groove, cut off the outside weeds of winding protecting crust through the blade groove, make weeds be difficult for winding protecting crust and cutting knife, thereby reduce the number of times that the shut down cleared up weeds, and the work efficiency is improved.

Preferably, a pair of first grooves is formed in the inner side wall, close to the first sliding groove, of the protective shell; the pair of first grooves are respectively positioned on two sides of the first sliding groove; the extrusion mechanism comprises a push block and a straight plate; the pushing block is connected inside the first sliding groove in a sliding mode, and a connecting plate is fixedly connected to the end portion, close to the sliding block, of the pushing block; the end part of the connecting plate far away from the push block is fixedly connected with the side wall of the sliding block far away from the blade; the straight plate is fixedly connected to the side wall of the pushing block, and a first spring is fixedly connected to the side wall, close to the first groove, of the straight plate; the end part of the first spring, which is far away from the straight plate, is fixedly connected with the inner side wall of the first groove; and an arc surface matched with the cam is arranged on the side wall of the push block far away from the slide block.

Through adopting above-mentioned technical scheme, it rotates to drive the cam when the rotation axis rotates, cooperation through the cambered surface of cam and ejector pad tip promotes the ejector pad and slides along first spout, the ejector pad slides the in-process and drives the first spring of straight board compression, and the ejector pad passes through the connecting plate and promotes the slider motion, make the blade stretch out the blade groove and cut winding weeds, when the cam loses the contact with the ejector pad, straight board drives the ejector pad under the elastic action of first spring and resets, make cam and ejector pad contact once more, realize that the blade carries out circulating cutting to winding weeds, reduce the winding possibility of weeds, improve the operating efficiency who cuts weeds.

Preferably, a pair of second grooves is arranged on the outer side wall of the protective shell; a vent pipe is fixedly connected in the second groove; a plurality of air nozzles are arranged on the outer side wall of the breather pipe; the plurality of air nozzles are communicated with the interior of the breather pipe; a second sliding chute is arranged on the inner side wall of each pair of first sliding chutes; a pressing block is connected in the second sliding chute in a sliding manner; a second spring is fixedly connected to the side wall of the pressing block far away from the connecting plate; the end part of the second spring, which is far away from the pressing block, is fixedly connected with the inner side wall of the second sliding chute; an air bag is arranged in the second sliding groove; the air bag is in contact with the side wall of the pressing block and is communicated with the inside of the vent pipe; a first inclined plane is arranged on the side wall of the pressing block close to the connecting plate; the end part of the push block close to the press block is provided with a first arc matched with the first inclined plane.

Through adopting above-mentioned technical scheme, when the cam extrusion ejector pad slides along first spout, the ejector pad is close to behind the briquetting gradually and the first inclined plane contact of briquetting, cooperation through first circular arc and first inclined plane promotes the briquetting and slides and compress the second spring along the second recess, the briquetting extrudees the gasbag towards sliding in the second recess, spout from the air nozzle behind the inside gas admission breather pipe of gasbag, air nozzle spun air current jets to being stained with the weeds that attaches on the protecting crust, make weeds be difficult for the winding outside the protecting crust, when the cam loses the contact with the ejector pad, under the spring action of first spring, the straight board drives the ejector pad and resets, the second spring promotes the briquetting and returns smooth, make the briquetting carry out circulating extrusion to the gasbag.

Preferably, a third groove is formed in the top of the shell; the power mechanism comprises a gasoline engine body; the gasoline engine body is arranged on the inner side wall of the bottom end of the third groove, and an oil tank is fixedly connected to the side wall of the gasoline engine body; an oil filling port is formed in the top of the oil tank; the crankshaft of the gasoline engine body is connected with a transmission rod; a first bevel gear is fixedly connected to the outer side wall of the transmission rod; the end part of the rotating shaft, far away from the cutting knife, extends into the third groove, and a second bevel gear is fixedly connected with the end part of the rotating shaft, far away from the cutting knife; the second bevel gear wheel is meshed with the first bevel gear.

Through adopting above-mentioned technical scheme, by the oiling mouth to the interior petrol of injecting of oil tank, start the gasoline engine body, gasoline engine body bent axle drives transfer line and first bevel gear and rotates, second bevel gear and first bevel gear meshing again to drive second bevel gear and rotation axis rotation, the rotation axis rotation in-process drives the cutting knife rotatory, cuts weeds through the cutting knife, the gasoline engine body has power as the power supply and is strong, the advantage that the horsepower is big, the work efficiency of weeding work has been promoted.

Preferably, a pair of cavities is arranged in the protective shell; a third sliding chute and a fourth sliding chute are arranged on the side walls of the pair of cavities; the third sliding groove is communicated with the first sliding groove; the fourth sliding groove is communicated with the blade groove; a pair of the cavities are connected with sliding plates in a sliding manner; the side wall of the sliding plate is fixedly connected with a pressing plate and a baffle plate; the pressing plate is in sliding fit with the inner side wall of the third sliding chute, and a second inclined surface is arranged on the end wall of the pressing plate, which is far away from the sliding plate; the end part of the sliding block close to the sliding plate is provided with a second arc matched with the second inclined plane; the baffle is in sliding fit with the inner side wall of the fourth sliding chute, and a sealing strip is fixedly connected to the end part, far away from the sliding plate, of the baffle; a plurality of third springs are fixedly connected to the side wall of the sliding block, which is far away from the pressing plate; and the side wall of the third spring, which is far away from the sliding plate, is fixedly connected with the inner side wall of the cavity.

Through adopting above-mentioned technical scheme, when the slider is in the initial position, the sealing strip blocks the blade groove, make the blade position have better leakproofness, make the external environment be difficult for causing the damage to the blade, when the slider is promoted to slide along first spout, the slider is close to gradually and contacts with the second inclined plane of clamp plate, cooperation through second inclined plane and second circular arc makes the slider promote the clamp plate to slide along the third spout, the clamp plate drives the slide and slides and compress the third spring in the second spout, the slide drives the baffle and slides towards fourth spout inside this moment, make the baffle keep away from the tip of slide and slide in the fourth spout, and then make the blade cut off weeds, when slider and clamp plate lose the contact, the slide resets under the effect of third spring, make the baffle return and slide, realize blocking to the blade groove, protect the blade.

Preferably, a square plate is fixedly connected to the bottom of the shell; a water through cavity is formed in the square plate, and a plurality of water spray nozzles are arranged at the bottom of the square plate; the plurality of water nozzles are communicated with the inner part of the water passing cavity; a water tank is fixedly connected to the side wall of the shell; a water pump is fixedly connected to the top of the water tank; the input end of the water pump is fixedly connected with a water inlet pipe, and the output end of the water pump is fixedly connected with a water outlet pipe; the end part of the water inlet pipe, which is far away from the water pump, is communicated with the inside of the water tank; the end part of the water outlet pipe, which is far away from the water pump, is communicated with the inner part of the water cavity.

Through adopting above-mentioned technical scheme, start the water pump when the cutting knife cuts weeds and carry the cold water of water tank inside to the logical water intracavity of square board through inlet tube and outlet pipe, the cold water that leads to the intracavity sprays through the water spout, and the cold of spraying cools down the cutting knife for the cutting knife is better carries out work, and the cold water that sprays spouts the grass bits that produces when cutting and spouts towards, makes the grass bits difficult for flying, improves workplace's environmental aspect.

Preferably, the bottom of the rotating shaft is provided with a mounting block; the bottom of the mounting block is provided with a plurality of mounting grooves; the cutting knife is arranged in the mounting groove; the top of each mounting groove is provided with a first threaded hole; a first threaded rod is connected with the first threaded hole in an internal thread manner; and a first through hole matched with the first threaded rod is formed in the cutting knife.

Through adopting above-mentioned technical scheme, when carrying out the installation of cutting knife, place the cutting knife at the mounting groove and correspond the position, pass first threaded rod in the first threaded hole of screw in behind the first through-hole, realize the fixed of cutting knife, the mounting means is simple convenient, the change of the cutting knife of being convenient for.

Preferably, the top of the mounting block is provided with a slot matched with the rotating shaft; a pair of second through holes is formed in the side wall of the slot; a plurality of second threaded holes are formed in the outer side wall of the end part of the rotating shaft, which is far away from the second bevel gear, at different heights; and a second threaded rod matched with the second threaded hole is arranged in the pair of second through holes.

Through adopting above-mentioned technical scheme, when the installation of installing the piece, insert the rotation axis in the slot, adjust the position of installation piece for the second through-hole aligns with the second screwed hole, realizes the fixed of installation piece behind the second threaded rod screw in second screwed hole in the second screwed hole, realizes the adjustment of cutting knife height through the cooperation of second threaded rod and the second screwed hole of co-altitude not, and then realizes the not ruderal cutting work of co-altitude.

Preferably, movable wheels are installed at the bottom of the shell close to four corners, and a support rod is fixedly connected to the top of the shell; the outside of the supporting rod is sleeved with an armrest frame; a pair of third threaded holes is formed in the side wall of the supporting rod; a third threaded rod is connected with the third threaded holes in an internal thread mode; and a plurality of third through holes matched with the third threaded rods are formed in the positions of the armrest frame with different heights.

Through adopting above-mentioned technical scheme, drive the movable wheel and roll when hand push handrail frame to realize the removal of casing, when carrying out the installation of handrail frame, establish handrail frame cover in the bracing piece outside, pass third through-hole back screw in third screw hole with the third threaded rod and realize fixing of handrail frame, the adjustment of handrail frame height is realized through the cooperation work of the third through-hole of co-altitude department and third threaded rod, makes things convenient for people of different heights to promote handrail frame and carry out the removal of casing.

Preferably, a filter screen is fixedly connected to the inner side wall of the protective shell; the middle part of the filter screen is provided with a round hole.

Through adopting above-mentioned technical scheme, the filter screen realizes the protecting effect to the rotation axis, blocks the weeds that fly through the filter screen that sets up for the weeds that the cutting produced are difficult for being stained with attaches at the rotation axis outside, and setting up of round hole lets the position for the rotation axis.

In summary, the present application has the following beneficial effects:

1. the protection shell arranged outside the rotating shaft separates weeds, the cam is driven to rotate when the rotating shaft rotates, the push block is pushed to slide through the cooperation of the cam and the cambered surface, the straight plate is driven to compress the first spring in the sliding process of the push block, the push block drives the sliding block to move through the connecting plate, the sliding block enables the blade to extend out of the blade groove, so that the weeds wound outside the protection shell are cut, when the cam is not in contact with the cambered surface, the push block and the sliding block slide back under the elastic action of the first spring, the blade can conveniently perform secondary mowing work, the possibility that the weeds are wound too much to influence the cutting work is reduced, the frequency of stopping the machine to clean the weeds is reduced, and the working efficiency of the cutting work is improved;

2. when the cam extrudes the push block to slide, the push block is close to the press block and then contacts with the first inclined plane, the press block is pushed to slide through the matching of the first arc and the first inclined plane and compresses the second spring, the air bag is extruded when the press block slides, so that gas in the air bag enters the vent pipe and then is ejected out of the air nozzle, air flow ejected out of the air nozzle blows weeds attached to the protective shell, the possibility of weed winding is reduced, and the weeds are not easy to wind the protective shell and the cutter blade is matched to cut off the weeds, so that the frequency of cleaning the weeds when the cutter blade is stopped is reduced;

3. when the slider is in the initial position, the sealing strip makes the blade not expose in the external environment with the contact of blade groove lateral wall, reduce the impaired possibility of blade, guarantee the blade to ruderal cutting work, when the slider is promoted to slide, the slider is close to the clamp plate after and contacts with the second inclined plane, make the slider promote the clamp plate to slide along the third spout through the cooperation of second inclined plane and second circular arc, the clamp plate drives the slide and slides and compress the third spring in the cavity, drive the baffle and slide towards fourth spout inside when the slide compresses the third spring, make the sealing strip slide in the fourth spout, abdicate for the blade, make the blade cut off weeds, when the cam loses the contact with the ejector pad, the slide resets under the effect of third spring, drive the baffle and return to smooth, make the sealing strip get back to the initial position and protect the blade.

Drawings

FIG. 1 is a schematic view of a mower with improved operating efficiency;

FIG. 2 is a schematic cross-sectional view of a mower with improved operating efficiency;

FIG. 3 is a schematic cross-sectional view of the rotating shaft, cam and shield of the present application;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the square plate, water pump and water tank of the present application;

FIG. 6 is a schematic view of the fitting structure of the mounting block and the rotating shaft in the present application;

FIG. 7 is a schematic view of the fitting structure of the mounting block and the cutter in the present application;

FIG. 8 is a cross-sectional view of the support frame and the armrest frame of the present application;

fig. 9 is a schematic view of the mating structure of the mounting block and the screen in the present application.

Description of reference numerals: 1. a housing; 11. a third groove; 12. a square plate; 121. a water spray nozzle; 13. a water through cavity; 14. a water tank; 15. a water pump; 151. a water inlet pipe; 152. a water outlet pipe; 16. a movable wheel; 17. a support bar; 171. a third threaded hole; 172. a third threaded rod; 18. an armrest frame; 181. a third through hole; 2. a rotating shaft; 21. a second bevel gear; 22. mounting blocks; 221. mounting grooves; 222. a first threaded hole; 223. a first threaded rod; 224. a slot; 225. a second through hole; 226. a second threaded rod; 23. a second threaded hole; 24. a cam; 3. cutting; 31. a first through hole; 4. a power mechanism; 41. a gasoline engine body; 42. an oil tank; 421. an oil filling port; 43. a transmission rod; 431. a first bevel gear; 5. a protective shell; 51. a first chute; 52. an insert pocket; 521. a slider; 522. a blade; 523. a second arc; 53. an extrusion mechanism; 531. a push block; 532. a straight plate; 533. a connecting plate; 534. a first spring; 535. a cambered surface; 536. a first arc; 54. a first groove; 55. a second groove; 551. a breather pipe; 552. an air nozzle; 56. a second chute; 561. briquetting; 562. a second spring; 563. an air bag; 564. a first inclined plane; 57. a cavity; 571. a third chute; 572. a fourth chute; 573. a slide plate; 574. pressing a plate; 575. a baffle plate; 576. a second inclined surface; 577. a sealing strip; 578. a third spring; 58. filtering with a screen; 581. a circular hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that, as used in the following description, the terms "front," "rear," "left," "right," "upper," "lower," "bottom" and "top" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The invention discloses a mower capable of improving working efficiency, which is shown in figures 1 and 2 and comprises a shell 1; the bottom of the shell 1 is rotatably connected with a rotating shaft 2; the bottom of the rotating shaft 2 is provided with a mounting block 22; the mounting block 22 is provided with a cutting knife 3; the top of the shell 1 is provided with a third groove 11; a power mechanism 4 for driving the rotating shaft 2 to rotate is arranged in the shell 1, and the power mechanism 4 comprises a gasoline engine body 41; the gasoline engine body 41 is arranged on the inner side wall of the bottom end of the third groove 11, and an oil tank 42 is fixedly connected to the side wall of the gasoline engine body 41; the top of the oil tank 42 is provided with an oil filling port 421; the crankshaft of the gasoline engine body 41 is connected with a transmission rod 43; a first bevel gear 431 is fixedly connected to the outer side wall of the transmission rod 43; the end part of the rotating shaft 2 far away from the cutting knife 3 extends into the third groove 11, and a second bevel gear 21 is fixedly connected with the end part of the rotating shaft 2 far away from the cutting knife 3; the second bevel gear 21 wheel meshes with the first bevel gear 431.

Inject petrol into oil tank 42 by oiling mouth 421, start gasoline engine body 41, gasoline engine body 41 bent axle drives transfer line 43 and first bevel gear 431 and rotates, second bevel gear 21 and first bevel gear 431 meshing again, and then drive second bevel gear 21 and rotation axis 2 and rotate, rotation axis 2 rotates the in-process and drives cutting knife 3 rotatory, thereby realize ruderal cutting, gasoline engine body 41 has power as the power supply and is strong, the advantage that the horsepower is big, the work efficiency of weeding work has been promoted.

As shown in fig. 2, 3 and 4, a protective shell 5 is fixedly connected to the bottom of the housing 1; the protective shell 5 is sleeved outside the rotating shaft 2, and a pair of first sliding grooves 51 are formed in the inner side wall of the protective shell 5; a blade groove 52 is arranged on the side wall of the pair of first sliding grooves 51; the blade groove 52 penetrates to the outer side wall of the protective shell 5; a slide block 521 is slidably connected in the pair of first slide grooves 51; a blade 522 is fixedly connected to the side wall of the slide block 521 close to the blade groove 52; the outer side wall of the rotating shaft 2 is fixedly connected with a cam 24; a pair of first grooves 54 is arranged on the inner side wall of the protective shell 5 close to the first sliding chute 51; a pair of first grooves 54 are respectively positioned at both sides of the first sliding groove 51; a pressing mechanism 53 for pushing the sliding block 521 to move in the first sliding chute 51 is arranged on the side wall of the sliding block 521 away from the blade 522; the pressing mechanism 53 includes a push block 531 and a straight plate 532; the pushing block 531 is slidably connected inside the first sliding chute 51, and a connecting plate 533 is fixedly connected to the end of the pushing block 531 close to the sliding block 521; the end of the connecting plate 533 far away from the pushing block 531 is fixedly connected with the side wall of the sliding block 521 far away from the blade 522; the straight plate 532 is fixedly connected to the side wall of the pushing block 531, and the side wall of the straight plate 532 close to the first groove 54 is fixedly connected with a first spring 534; the end part of the first spring 534 far away from the straight plate 532 is fixedly connected with the inner side wall of the first groove 54; the side wall of the push block 531 away from the slide block 521 is provided with an arc surface 535 which is matched with the cam 24.

The weed is blocked by arranging the protective shell 5 outside the rotating shaft 2, so that the weed is not easy to wind on the rotating shaft 2 and the cutting knife 3, the rotating shaft 2 rotates to drive the cam 24 to rotate, the cam 24 rotates to contact with the push block 531, the push block 531 is pushed to slide by the cooperation of the cam 24 and the arc surface 535 at the end part of the push block 531, the push block 531 drives the straight plate 532 to compress the first spring 534 in the sliding process of the push block 531, the push block 531 pushes the slider 521 to move through the connecting plate 533, so that the blade 522 extends out of the blade groove 52 to cut the wound weed, when the cam 24 loses contact with the push block 531, the straight plate 532 drives the push block 531 to reset under the elastic action of the first spring 534, so that the cam 24 and the push block 531 can contact again, the blade 522 can cut the wound weed in a circulating manner, the possibility of winding the weed is reduced, and the working efficiency of cutting the weed is improved.

As shown in fig. 3 and 4, a pair of second grooves 55 are formed on the outer side wall of the protective shell 5; a vent pipe 551 is fixedly connected in the second groove 55; a plurality of air nozzles 552 are arranged on the outer side wall of the breather pipe 551; a plurality of air jets 552 communicate with the interior of the snorkel 551; a second sliding groove 56 is arranged on the inner side wall of the pair of first sliding grooves 51; a pressing block 561 is connected in the second sliding groove 56 in a sliding manner; a second spring 562 is fixedly connected to the side wall of the pressing block 561 away from the connecting plate 533; the end part of the second spring 562 far away from the pressing block 561 is fixedly connected with the inner side wall of the second sliding groove 56; an air bag 563 is arranged inside the second chute 56; the air bag 563 is in contact with the side wall of the pressing block 561, and the air bag 563 is communicated with the interior of the vent pipe 551; a first inclined plane 564 is arranged on the side wall of the pressing block 561 close to the connecting plate 533; the end of the push block 531 adjacent to the mass 561 is provided with a first arc 536 that engages the first ramp 564.

When the push block 531 is extruded by the cam 24 and slides along the first sliding groove 51, the push block 531 is close to the pressing block 561 and then is in contact with the first inclined plane 564 of the pressing block 561, the pressing block 561 is pushed to slide and compress the second spring 562 through the matching work of the first arc 536 and the first inclined plane 564, the pressing block 561 extrudes the air bag 563 during sliding, so that gas in the air bag 563 enters the ventilating pipe 551 and then is ejected by the air nozzle 552, the air flow ejected by the air nozzle 552 blows weeds adhered to the protection shell 5, the weeds are not easy to wind around the protection shell 5, the possibility of winding the weeds is reduced, the frequency of stopping and cleaning the weeds is reduced, and the working efficiency is improved.

As shown in fig. 4, a pair of cavities 57 are provided in the protective shell 5; a third sliding groove 571 and a fourth sliding groove 572 are arranged on the side walls of the pair of cavities 57; the third chute 571 is communicated with the first chute 51; the fourth slide groove 572 communicates with the blade groove 52; a pair of cavities 57 are internally and slidably connected with sliding plates 573; a pressure plate 574 and a baffle 575 are fixedly connected on the side wall of the sliding plate 573; the pressing plate 574 is in sliding fit with the inner side wall of the third chute 571, and the end wall of the pressing plate 574 far away from the sliding plate 573 is provided with a second inclined surface 576; the end of the slider 521 close to the sliding plate 573 is provided with a second arc 523 cooperating with the second inclined surface 576; the baffle 575 is in sliding fit with the inner side wall of the fourth sliding groove 572, and a sealing strip 577 is fixedly connected to the end part, far away from the sliding plate 573, of the baffle 575; a plurality of third springs 578 are fixedly connected to the side wall of the sliding block 521 away from the pressing plate 574; a third plurality of springs 578 are secured to the inner side wall of cavity 57 remote from the side wall of slide 573.

When the sliding block 521 is in the initial position, the end part of the blocking plate 575 far away from the sliding plate 573 extends into the blade slot 52, the sealing strip 577 contacts with the side wall of the blade slot 52 to prevent the blade 522 from being exposed to the external environment, so as to protect the blade 522 and reduce the possibility of damage to the blade 522, when the sliding block 521 is pushed to slide, the sliding block 521 is close to the pressing plate 574 and contacts with the second inclined surface 576, the sliding block 521 is pushed to slide along the third sliding groove 571 by the cooperation of the second inclined surface 576 and the second arc 523, the pressing plate 574 drives the sliding plate 573 to slide in the cavity 57 and compress the third spring 578, when the sliding plate 573 compresses the third spring 578, the blocking plate 575 is driven to slide towards the inside of the fourth sliding groove 572, so that the sealing strip 577 slides into the fourth sliding groove 572 to give way to the blade 522, and when the sliding block 521 loses contact with the pressing plate 574, the sliding plate 573 is reset under the action of the third spring 578, the blocking plate 573 is driven to slide back, so that the sealing strip 577 returns to the initial position to protect the blade 522.

As shown in fig. 2 and 5, a square plate 12 is fixedly connected to the bottom of the housing 1; a water through cavity 13 is arranged inside the square plate 12, and a plurality of water spray nozzles 121 are arranged at the bottom of the square plate 12; the plurality of water nozzles 121 are communicated with the inside of the water passing cavity 13; a water tank 14 is fixedly connected to the side wall of the shell 1; the top of the water tank 14 is fixedly connected with a water pump 15; the input end of the water pump 15 is fixedly connected with a water inlet pipe 151, and the output end is fixedly connected with a water outlet pipe 152; the end part of the water inlet pipe 151 far away from the water pump 15 is communicated with the inside of the water tank 14; the end part of the water outlet pipe 152 far away from the water pump 15 is communicated with the inside of the water cavity 13; the water pump 15 is started to convey cold water in the water tank 14 to the water passing cavity 13 of the straight plate 532 through the water inlet pipe 151 and the water outlet pipe 152, the cold water in the water passing cavity 13 is sprayed through the water spray nozzle 121, the sprayed cold cools the cutting knife 3, the cutting knife 3 can work better, and the sprayed cold water sprays grass scraps generated during cutting, so that the grass scraps are not easy to fly off, and the environment condition of a working place is improved.

As shown in fig. 6 and 7, the top of the mounting block 22 is provided with a slot 224 which is matched with the rotating shaft 2; a pair of second through holes 225 are arranged on the side wall of the slot 224; a plurality of second threaded holes 23 are formed in the outer side wall of the end part of the rotating shaft 2 far away from the second bevel gear 21 at different heights; a second threaded rod 226 matched with the second threaded hole 23 is arranged in the pair of second through holes 225; the bottom of the mounting block 22 is provided with a plurality of mounting grooves 221; the cutting knife 3 is arranged in the mounting groove 221; the top of the mounting grooves 221 is provided with a first threaded hole 222; a first threaded rod 223 is connected to the first threaded hole 222 in a threaded manner; a first through hole 31 matched with the first threaded rod 223 is formed in the cutting knife 3; when the installation of installing piece 22 earlier, insert rotation axis 2 in the slot 224, make second through-hole 225 align with second screw hole 23, realize the fixed of installation piece 22 after screwing in second screw hole 23 with the second threaded rod 226 in second screw hole 23, place cutting knife 3 at mounting groove 221 corresponding position again, pass first threaded rod 223 in first screw hole 222 behind the first through-hole 31 screw in, realize the fixed of cutting knife 3, through adjusting the whole height of cutting knife 3 in the second screw hole 23 with second threaded rod 226 screw in different height departments, thereby realize the not ruderal cutting work of co-altitude.

As shown in fig. 1 and 8, movable wheels 16 are mounted at the bottom of the housing 1 near the four corners, and a support rod 17 is fixedly connected to the top of the housing 1; the outside of the support rod 17 is sleeved with a handrail frame 18; a pair of third threaded holes 171 are formed in the side wall of the support rod 17; a pair of third threaded holes 171 are internally threaded with third threaded rods 172; a plurality of third through holes 181 matched with the third threaded rods 172 are arranged at different heights of the armrest frame 18; the hand-push handrail frame 18 drives the movable wheels 16 to roll, movement of the shell 1 is achieved, when the handrail frame 18 is installed, the handrail frame 18 is sleeved outside the supporting rod 17, the third threaded rod 172 penetrates through the third through hole 181 and then is screwed into the third threaded hole 171 to fix the handrail frame 18, the third threaded rod 172 penetrates through the third through hole 181 and then is screwed into the third threaded hole 171 to achieve height adjustment of the handrail frame 18, and people with different heights can conveniently push the handrail frame 18 to move the shell 1.

As shown in fig. 9, a filter screen 58 is fixedly connected to the inner side wall of the protective shell 5; a circular hole 581 is arranged in the middle of the filter screen 58; the weeds are blocked by the arranged filter screen 58, so that the weeds cannot easily enter the inside of the protective shell 5.

The working principle is as follows: inserting the rotating shaft 2 into the slot 224 at the top of the mounting block 22, aligning the second through hole 225 with the second threaded hole 23, penetrating the second threaded rod 226 through the second through hole 225, rotating the second threaded rod 226 to fix the mounting block 22 and the rotating shaft 2, placing the cutting knife 3 on the mounting groove 221, penetrating the first threaded rod 223 through the first through hole 31, screwing the first threaded rod into the first threaded hole 222 to fix the cutting knife 3, sleeving the handrail frame 18 outside the support rod 17, penetrating the third threaded rod 172 through the third through hole 181, screwing the third threaded rod 172 into the third threaded hole 171 to fix the handrail frame 18, driving the movable wheel 16 to roll by pushing the handrail frame 18 to realize the movement of the housing 1, when cutting weeds, starting the gasoline engine body 41, driving the transmission rod 43 and the first bevel gear 431 to rotate by the crankshaft of the gasoline engine body 41, meshing the second bevel gear 21 with the first bevel gear 431 to drive the rotating shaft 2 to rotate, driving the rotating shaft 2 to rotate to drive the rotating shaft 3 to rotate, cutting weeds, supplementing the oil port 421 into the oil tank 42, and blocking the protective housing 5 outside the rotating shaft 2 from the gasoline; the rotating shaft 2 drives the cam 24 to rotate in the rotating process, the push block 531 is pushed to slide through the matching of the cam 24 and the cambered surface 535, the straight plate 532 is driven to compress the first spring 534 in the sliding process of the push block 531, the push block 531 drives the sliding block 521 to move through the connecting plate 533, and the sliding block 521 enables the blade 522 to extend out of the blade groove 52, so that weeds wound outside the protective shell 5 are cut, and the possibility that the weeds wind the protective shell 5 and the cutting knife 3 to influence the cutting work is reduced; when the cam 24 extrudes the push block 531 to slide, the push block 531 is close to the press block 561 and then contacts with the first inclined plane 564, the press block 561 is pushed to slide through the cooperation of the first arc 536 and the first inclined plane 564 and compresses the second spring 562, the press block 561 extrudes the air bag 563 when sliding, so that gas in the air bag 563 enters the air pipe 551 and then is ejected by the air nozzle 552, air flow ejected by the air nozzle 552 blows weeds attached to the protective shell 5, the possibility of winding the weeds is reduced, the weeds are not easy to wind the cutting knife 3 and the protective shell 5 through the cutting-off work of the matched blade 522 on the weeds, the number of times of stopping for cleaning the weeds is reduced, and the working efficiency is improved; when the sliding block 521 is in the initial position, the sealing strip 577 contacts the side wall of the blade slot 52 so that the blade 522 is not exposed to the external environment, the blade 522 is protected, and the possibility of damage to the blade 522 is reduced, when the sliding block 521 is pushed to slide, the sliding block 521 is close to the pressing plate 574 and contacts with the second inclined surface 576, the sliding block 521 pushes the pressing plate 574 to slide along the third sliding groove 571 through the cooperation of the second inclined surface 576 and the second arc 523, the pressing plate 574 drives the sliding plate 573 to slide in the cavity 57 and compress the third spring 578, the sliding plate 573 drives the baffle 575 to slide towards the inside of the fourth sliding groove 572 when compressing the third spring 578, so that the sealing strip 577 slides into the fourth sliding groove 572, thereby yielding the blade 522, so that the blade 522 extends out of the blade slot 52 to cut off weeds smoothly, when the cam 24 loses contact with the pushing block 531, the straight plate 532 drives the push block 531 to reset under the action of the elastic force of the first spring 534, so that the slide block 521 is out of contact with the press plate 574, the sliding plate 573 resets under the action of the third spring 578, the baffle 575 is driven to slide back, the sealing strip 577 returns to the initial position to protect the blade 522, the water pump 15 is started in the weed cutting process, cold water in the water tank 14 is conveyed into the water through cavity 13 of the straight plate 532 through the water inlet pipe 151 and the water outlet pipe 152, the cold water in the water through cavity 13 is sprayed through the water spray nozzle 121, the sprayed cold cools the cutting knife 3, so that the cutting knife 3 can work better, and the sprayed cold water sprays grass scraps generated in the cutting process, so that the grass scraps are not easy to fly off, the environment condition of a workplace is improved, and the flying weeds are not easy to enter the protective shell 5 by the arranged filter screen 58.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an improve work efficiency's lawn mower which characterized in that: comprises a shell (1); the bottom of the shell (1) is rotatably connected with a rotating shaft (2); the bottom of the rotating shaft (2) is provided with a cutting knife (3); a power mechanism (4) for driving the rotating shaft (2) to rotate is arranged in the shell (1), and a protective shell (5) is fixedly connected to the bottom of the shell (1); the protective shell (5) is sleeved outside the rotating shaft (2), and a pair of first sliding grooves (51) are formed in the inner side wall of the protective shell (5); blade grooves (52) are arranged on the side walls of the first sliding grooves (51); the blade groove (52) penetrates through the outer side wall of the protective shell (5); a sliding block (521) is connected in the first sliding grooves (51) in a sliding manner; a blade (522) is fixedly connected to the side wall of the sliding block (521) close to the blade groove (52); a squeezing mechanism (53) for pushing the sliding block (521) to move in the first sliding chute (51) is arranged on the side wall of the sliding block (521) far away from the blade (522); a cam (24) is fixedly connected to the outer side wall of the rotating shaft (2); the cam (24) cooperates with a pressing mechanism (53).

2. An improved operating efficiency lawnmower according to claim 1, wherein: a pair of first grooves (54) are formed in the inner side wall, close to the first sliding groove (51), of the protective shell (5); the pair of first grooves (54) are respectively positioned at two sides of the first sliding groove (51); the extrusion mechanism (53) comprises a push block (531) and a straight plate (532); the push block (531) is connected inside the first sliding chute (51) in a sliding manner, and a connecting plate (533) is fixedly connected to the end part, close to the sliding block (521), of the push block (531); the end part of the connecting plate (533) far away from the push block (531) is fixedly connected with the side wall of the sliding block (521) far away from the blade (522); the straight plate (532) is fixedly connected to the side wall of the push block (531), and a first spring (534) is fixedly connected to the side wall of the straight plate (532) close to the first groove (54); the end part of the first spring (534) far away from the straight plate (532) is fixedly connected with the inner side wall of the first groove (54); and an arc surface (535) matched with the cam (24) is arranged on the side wall of the push block (531) far away from the slide block (521).

3. An improved operating efficiency lawnmower according to claim 2, wherein: a pair of second grooves (55) is formed in the outer side wall of the protective shell (5); a vent pipe (551) is fixedly connected in the second groove (55); a plurality of air nozzles (552) are arranged on the outer side wall of the breather pipe (551); a plurality of said air nozzles (552) communicating with the interior of a snorkel (551); a second sliding chute (56) is arranged on the inner side wall of each pair of the first sliding chutes (51); a pressing block (561) is connected in the second sliding groove (56) in a sliding manner; a second spring (562) is fixedly connected to the side wall of the pressing block (561) far away from the connecting plate (533); the end part of the second spring (562) far away from the pressing block (561) is fixedly connected with the inner side wall of the second sliding groove (56); an air bag (563) is arranged inside the second sliding groove (56); the air bag (563) is in contact with the side wall of the pressing block (561), and the air bag (563) is communicated with the interior of the vent pipe (551); a first inclined plane (564) is arranged on the side wall of the pressing block (561) close to the connecting plate (533); the end part of the push block (531) close to the press block (561) is provided with a first arc (536) matched with the first inclined plane (564).

4. An improved operating efficiency lawnmower according to claim 1, wherein: a third groove (11) is formed in the top of the shell (1); the power mechanism (4) comprises a gasoline engine body (41); the gasoline engine body (41) is arranged on the inner side wall of the bottom end of the third groove (11), and an oil tank (42) is fixedly connected to the side wall of the gasoline engine body (41); the top of the oil tank (42) is provided with an oil filling port (421); a transmission rod (43) is connected to the crankshaft of the gasoline engine body (41); a first bevel gear (431) is fixedly connected to the outer side wall of the transmission rod (43); the end part of the rotating shaft (2) far away from the cutting knife (3) extends into the third groove (11), and a second bevel gear (21) is fixedly connected to the end part of the rotating shaft (2) far away from the cutting knife (3); the second bevel gear (21) wheel is meshed with the first bevel gear (431).

5. A work efficiency improving lawnmower according to claim 3, wherein: a pair of cavities (57) is arranged in the protective shell (5); a third sliding groove (571) and a fourth sliding groove (572) are arranged on the side walls of the pair of cavities (57); the third sliding groove (571) is communicated with the first sliding groove (51); the fourth slide groove (572) communicates with the blade groove (52); a sliding plate (573) is connected in the cavity (57) in a sliding way; a pressure plate (574) and a baffle (575) are fixedly connected to the side wall of the sliding plate (573); the pressure plate (574) is in sliding fit with the inner side wall of the third sliding groove (571), and a second inclined surface (576) is arranged on the end wall, away from the sliding plate (573), of the pressure plate (574); the end part of the sliding block (521) close to the sliding plate (573) is provided with a second arc (523) matched with the second inclined surface (576); the baffle (575) is in sliding fit with the inner side wall of the fourth sliding groove (572), and a sealing strip (577) is fixedly connected to the end part, far away from the sliding plate (573), of the baffle (575); a plurality of third springs (578) are fixedly connected to the side wall of the sliding block (521) far away from the pressure plate (574); the side wall of the third springs (578) far away from the sliding plate (573) is fixedly connected with the inner side wall of the cavity (57).

6. An improved operating efficiency lawnmower according to claim 1, wherein: a square plate (12) is fixedly connected to the bottom of the shell (1); a water through cavity (13) is arranged inside the square plate (12), and a plurality of water spray nozzles (121) are arranged at the bottom of the square plate (12); a plurality of water nozzles (121) are communicated with the inside of the water through cavity (13); a water tank (14) is fixedly connected to the side wall of the shell (1); a water pump (15) is fixedly connected to the top of the water tank (14); the input end of the water pump (15) is fixedly connected with a water inlet pipe (151), and the output end of the water pump is fixedly connected with a water outlet pipe (152); the end part of the water inlet pipe (151) far away from the water pump (15) is communicated with the inside of the water tank (14); the end part of the water outlet pipe (152) far away from the water pump (15) is communicated with the inside of the water passing cavity (13).

7. An improved operating efficiency lawnmower according to claim 1, wherein: the bottom of the rotating shaft (2) is provided with a mounting block (22); the bottom of the mounting block (22) is provided with a plurality of mounting grooves (221); the cutting knife (3) is arranged in the mounting groove (221); the tops of the mounting grooves (221) are provided with first threaded holes (222); a first threaded rod (223) is connected with the first threaded hole (222) in an internal thread mode; and a first through hole (31) matched with the first threaded rod (223) is formed in the cutting knife (3).

8. An improved operating efficiency lawnmower according to claim 7, wherein: the top of the mounting block (22) is provided with a slot (224) matched with the rotating shaft (2); a pair of second through holes (225) is arranged on the side wall of the slot (224); a plurality of second threaded holes (23) are formed in the outer side wall of the end part, far away from the second bevel gear (21), of the rotating shaft (2) at different heights; and a second threaded rod (226) matched with the second threaded hole (23) is arranged in the pair of second through holes (225).

9. The work efficiency improving lawnmower according to claim 1, wherein: movable wheels (16) are arranged at the bottom of the shell (1) close to four corners, and a support rod (17) is fixedly connected to the top of the shell (1); the outside of the supporting rod (17) is sleeved with a handrail frame (18); a pair of third threaded holes (171) are formed in the side wall of the supporting rod (17); a third threaded rod (172) is connected to the pair of third threaded holes (171) in an internal thread manner; and a plurality of third through holes (181) matched with the third threaded rods (172) are formed in the positions of the armrest frame (18) at different heights.

10. An improved operating efficiency lawnmower according to claim 1, wherein: a filter screen (58) is fixedly connected to the inner side wall of the protective shell (5); the middle part of the filter screen (58) is provided with a round hole (581).