阅读说明：本技术 一种带有后入式排草风道的草坪机底盘 (Lawn mower chassis with rear-entering grass discharging air duct ) 是由 谢安源 刘超鹏 史新明 陈兰 于 2021-09-09 设计创作，主要内容包括：本发明涉及一种带有后入式排草风道的草坪机底盘,包括草坪机底盘和固定安装在草坪机底盘后方的排草风道机构,所述草坪机底盘顶端中心开设一通孔,所述草坪机底盘上方放置有油箱,所述草坪机底盘两侧后方均设置一连接件,所述草坪机底盘后侧方开设有排草口,所述草坪机底盘右侧方开设有侧排草口,所述排草口与排草管连通,所述排草管偏离排草口的一端贯穿排草风道机构并固定连接在排草风道机构上,通过在草坪机底盘后方开设排草口,采用后入式连接的方式连接草袋,从而不会破坏所述草坪机底盘的的圆形涡旋形状,不会影响草坪机底盘的整体强度,所述排草口设置为大开口结构并且设置在草坪机底盘后侧方,使排草效果更加顺畅,不易堵塞。(The invention relates to a lawn mower chassis with a rear-in grass discharging air channel, which comprises a lawn mower chassis and a grass discharging air channel mechanism fixedly arranged at the rear part of the lawn mower chassis, wherein the center of the top end of the lawn mower chassis is provided with a through hole, an oil tank is arranged above the lawn mower chassis, connecting pieces are arranged at the rear parts of two sides of the lawn mower chassis, a grass discharging port is arranged at the rear side of the lawn mower chassis, a side grass discharging port is arranged at the right side of the lawn mower chassis and communicated with a grass discharging pipe, one end of the grass discharging pipe, which deviates from the grass discharging port, penetrates through the grass discharging air channel mechanism and is fixedly connected to the grass discharging air channel mechanism, a grass bag is connected by adopting a rear-in connection mode by arranging the grass discharging port at the rear part of the lawn mower chassis, so that the circular vortex shape of the lawn mower chassis is not damaged, the integral strength of the lawn mower chassis is not influenced, the grass discharging port is arranged in a large-opening structure and is arranged at the rear part of the lawn mower chassis, the grass discharging effect is smoother and the blockage is not easy to happen.)

1. The utility model provides a lawn mower chassis with income formula grass discharging air channel after, includes grass mower chassis (1) and fixed mounting in grass mower chassis (1) rear grass discharging air channel mechanism (2), its characterized in that: a through hole (10) is seted up at lawn mower chassis (1) top center, oil tank (3) have been placed to lawn mower chassis (1) top, a motor (5) of lawn mower chassis (1) internally mounted, motor (5) output and gearbox input are connected, are equipped with gear adjusting lever (4) on the gearbox, motor (5) spindle is connected with lawn mower subassembly (6), lawn mower chassis (1) both sides rear all sets up a connecting piece (12), lawn mower chassis (1) rear is through connecting piece (12) and row grass wind channel mechanism (2) fixed connection.

2. The lawn mower chassis with a rear entry grass discharge duct of claim 1, wherein: grass discharging port (7) have been seted up to lawn mower chassis (1) rear side, but grass discharging port (8) are close to one of grass discharging air duct mechanism (2) and serve through a hinge connection lock cover side grass discharging port apron (18) outside grass discharging port (8) of side, grass discharging port (11) have been seted up to lawn mower chassis (1) right side, grass discharging port (7) and grass discharging pipe (8) intercommunication, the one end of grass discharging pipe (8) skew grass discharging port (7) is run through grass discharging air duct mechanism (2) and fixed connection on grass discharging air duct mechanism (2).

3. The lawn mower chassis with a rear entry grass discharge duct of claim 2, wherein: grass discharging air duct mechanism (2) includes two side shields (202), a backplate (203), both sides board (204) and a flip cover board (201), two curb plate (204) fixed connection respectively is in backplate (203) both sides, two side shield (202) pass through bolt fixed connection on connecting piece (12) on lawn mower chassis (1), two fixed mounting one side shield (202) on one side of curb plate (204) skew backplate (203), flip cover board (201) rotate to be connected on two curb plates (204) through the articulated shaft, set up a hole and the position with grass discharge opening (7) equidimension on backplate (203) and correspond.

4. The lawn mower chassis with a rear entry grass discharge duct of claim 3, wherein: the side plates (204) are of a grid-shaped structure.

5. The lawn mower chassis with a rear entry weed discharge duct of claim 4, wherein: the lawn mower chassis (1) is provided with a heat dissipation opening (9) at a position beside the grass discharge opening (7), and a heat dissipation fin (14) is arranged in the heat dissipation opening (9).

6. The lawn mower chassis with a rear entry grass discharge duct of claim 5, wherein: the bottom end of the straw discharging pipe (8) is provided with an opening, and a turnover cover (15) which can be buckled at the bottom end of the straw discharging pipe (8) is rotatably connected at the opening.

7. The lawn mower chassis with a rear entry grass discharge duct of claim 6, wherein: a temperature sensor (16) and an alarm (17) are installed at the top of the bottom end of the lawn mower chassis (1), and the temperature sensor (16) is electrically connected with the alarm (17).

8. The lawn mower chassis with a rear entry weed discharge duct of claim 7, wherein: one end of the turning cover plate (201) which rotates is connected with a tension spring (13), and the other end of the tension spring (13) is fixedly connected to the lawn mower chassis (1).

9. The lawn mower chassis with a rear entry weed discharge duct of claim 8, wherein: the mower blade assembly (6) comprises a blade of a fan blade structure and a blade holder and a gasket for mounting the blade.

10. The lawn mower chassis with a rear entry weed discharge duct of claim 9, wherein: the bottom end of the grass discharging air duct mechanism (2) is open, the lawn mower chassis (1) is in a circular vortex shape, and the upper surface of the lawn mower chassis (1) is inclined.

Technical Field

The invention relates to the technical field of gardening auxiliary instruments, in particular to a lawn mower chassis with a rear-in grass discharging air duct.

Background

With the continuous progress of computer technology and artificial intelligence technology, automatic lawn mowers similar to intelligent robots have started to walk slowly into people's lives. The automatic lawn mower can automatically cut and charge grass on the lawn of a user without user interference. After the automatic working system is set for one time, the user is freed from tedious and time-consuming and labor-consuming housework such as cleaning, lawn maintenance and the like without being invested in energy management;

the existing lawn mower is in the grass discharging process, the grass discharging channel is usually arranged at the top of the base plate of the lawn mower, and the channel opening is small, so that the grass discharging channel is easy to block in the grass discharging process, grass in the grass discharging channel needs to be continuously cleaned, and the grass discharging channel is inconvenient.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the invention provides a method for solving the problems in the background art.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the embodiment of the invention discloses a lawn mower chassis with a rear-in grass discharging air channel, which comprises a lawn mower chassis and a grass discharging air channel mechanism fixedly arranged behind the lawn mower chassis, wherein the center of the top end of the lawn mower chassis is provided with a through hole, an oil tank is arranged above the lawn mower chassis, an engine is arranged inside the lawn mower chassis, the output end of the engine is connected with the input end of a gearbox, the gearbox is provided with a gear adjusting rod, the shaft of the engine is connected with a grass cutter assembly, connecting pieces are arranged behind two sides of the lawn mower chassis, and the rear of the lawn mower chassis is fixedly connected with the grass discharging air channel mechanism through the connecting pieces.

It is preferred in any preceding scheme that grass discharging port has been seted up to lawn mower chassis rear side, side grass discharging port has been seted up to lawn mower chassis right side, but side grass discharging port is close to one of grass discharging air duct mechanism and serves and cover the outer side grass discharging port apron of side grass discharging port through a hinge connection lock, grass discharging port and grass discharging pipe intercommunication, the one end of the skew grass discharging port of grass discharging pipe runs through grass discharging air duct mechanism and fixed connection on grass discharging air duct mechanism.

In any of the above schemes, preferably, the grass discharge air duct mechanism includes two side baffles, a back baffle, two side plates and a turnover cover plate, the two side plates are respectively and fixedly connected with two sides of the back baffle, the two side baffles are fixedly connected with a connecting piece on the lawn mower chassis through bolts, one side of the two side plates deviating from the back baffle is fixedly provided with one side baffle, the turnover cover plate is rotatably connected with the two side plates through an articulated shaft, and the back baffle is provided with a hole with the same size as the grass discharge port and corresponds in position.

In any of the above aspects, preferably, the side plate has a grid-like structure.

In any of the above schemes, preferably, the lawn mower chassis is provided with a heat dissipation opening at a position beside the grass discharge opening, and the heat dissipation opening is provided with a heat dissipation fin.

In any of the above schemes, preferably, the bottom end of the straw discharge pipe is provided with an opening, and the opening is rotatably connected with a flip cover which can be buckled at the bottom end of the straw discharge pipe.

In any of the above aspects, preferably, a temperature sensor and an alarm are mounted on the top of the bottom end of the lawn mower chassis, and the temperature sensor is electrically connected with the alarm.

In any of the above schemes, preferably, one end of the turnover cover plate rotating is connected with a tension spring, and the other end of the tension spring is fixedly connected to the lawn mower chassis.

In any of the above aspects, it is preferred that the mower blade assembly comprises a blade of fan blade construction and a seat and washer for mounting the blade.

In any of the above aspects, preferably, the lawn mower chassis is in a circular vortex shape, and the upper surface of the lawn mower chassis is inclined.

Compared with the prior art, the invention has the beneficial effects that:

1. arrange the grass mouth through seting up lawn mower chassis rear, adopt the mode of back income formula connection to connect the grass bag to can not destroy the circular vortex shape on lawn mower chassis can not influence the bulk strength on lawn mower chassis, arrange the grass mouth and set up to big open structure and in lawn mower chassis rear side, make row grass effect more smooth and easy, difficult jam.

2. Through setting row grass air duct mechanism bottom is open, is favorable to the heat dissipation to conveniently clear up row grass air duct mechanism simultaneously, a thermovent has been seted up on the position that is located row grass mouth on one side to the lawn mower chassis the last installation fin of thermovent can improve the radiating efficiency of lawn mower when the operation.

3. Arrange the upset apron that grass air duct mechanism top set up can overturn, be connected with the extension spring between upset apron rotation end and the lawn mower chassis bottom, utilize the elasticity of extension spring can make the upset apron automatically return closed row grass air duct mechanism top after opening, convenient and fast.

4. Through arrange the straw bottom and set up a flip, can open flip after the lawn mower uses and clean arranging the straw intraduct, need not dismantle just can directly clean arranging the straw pipe, convenient and fast, labour saving and time saving.

5. Through the design lawn mower chassis is circular vortex shape to the design the top highly is higher than its preceding top behind the lawn mower chassis and makes its top be the inclined plane form, and the rotatory trend that goes smoothly is of the air current that produces of cutting blade that does benefit to flabellum mechanism when the operation, can reduce the resistance, raises the efficiency.

6. Through temperature sensor and siren are installed to lawn mower chassis bottom top, and when high-grade position lasts long-time operation in the lawn mower, the rotational speed of lawn mower subassembly is very fast to the heat that produces also becomes many when the untimely condition of heat dissipation appears, temperature sensor senses the temperature in the lawn mower chassis and lasts when higher, then can transmit signal and report to the police for the siren, reminds the operator through the siren to turn down the gear, does benefit to the protection lawn mower, prolongs the life of lawn mower.

7. Through setting up grass mouthful is arranged to side and is arranged grass mouthful department installation side and arrange grass mouthful apron in the side, cover grass mouthful apron is arranged to side when collecting garrulous grass, and the grass that can just cut up is only discharged through arranging the grass mouthful and is collected, arranges the straw pipe and does not connect the grass bag when need not collecting grass open grass mouthful apron is arranged to side makes two grass of arranging grass mouthful and arranging the grass mouthful of side can both arrange the grass, improve row's grass efficiency.

Drawings

The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is a bottom schematic view of a lawn mower chassis and a grass discharge duct mechanism according to the present invention;

FIG. 2 is a bottom view of a lawn mower chassis according to the present invention;

fig. 3 is a schematic view of the chassis of the lawn mower according to the present invention.

In the figure: 1. lawn mower chassis, 2, grass discharging air duct mechanism, 201, flip cover plate, 202, side baffle, 203, rear baffle, 204, side plate, 3, oil tank, 4, gear adjusting rod, 5, engine, 6 mower blade assembly, 7, grass discharging port, 8, grass discharging pipe, 9, heat radiating port, 10, through hole, 11, side grass discharging port, 12, connecting piece, 13, tension spring, 14, heat radiating fin, 15 flip cover, 16, temperature sensor, 17, alarm, 18, side grass discharging port cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.

Examples

Referring to fig. 1, 2 and 3, a lawn mower chassis with a rear-in grass discharge duct comprises a lawn mower chassis 1 and a grass discharge duct mechanism 2 fixedly installed behind the lawn mower chassis 1, wherein a through hole 10 is formed in the center of the top end of the lawn mower chassis 1, so that an engine 5 is conveniently connected with an oil tank 3 through an oil pipe, the oil tank 3 is placed above the lawn mower chassis 1, the engine 5 is installed inside the lawn mower chassis 1, the output end of the engine 5 is connected with the input end of a gearbox, the gearbox is provided with a gear adjusting rod 4, the rotating speed of the output shaft of the gearbox can be changed by shifting the gear adjusting rod 4 to change the rotating speed of the output shaft of the gearbox, so as to change the rotating speed of a grass cutting assembly 6, the shaft of the engine 5 is connected with the grass cutting assembly 6, and a connecting piece 12 is arranged behind both sides of the lawn mower chassis 1, the grass discharging air channel mechanism is characterized in that the rear part of the lawn mower chassis 1 is fixedly connected with the grass discharging air channel mechanism 2 through a connecting piece 12, the connecting piece 12 is fixedly connected onto the lawn mower chassis 1 through bolts, and the grass discharging air channel mechanism 2 is fixedly connected onto the connecting piece 12 through bolts, so that the grass discharging air channel mechanism 2 can be detached through detaching the bolts, and the whole grass discharging air channel mechanism 2 is conveniently cleaned.

As shown in fig. 1, 2 and 3, the rear side of the lawn mower chassis 1 is provided with a grass discharge port 7, the grass discharge port 7 is of a large opening structure, so that the grass discharge effect is smoother and is not easy to block, and a grass bag is connected to the rear of the lawn mower, so that the circular vortex shape of the lawn mower chassis 1 is not damaged, the overall strength of the lawn mower chassis 1 is not affected, the right side of the lawn mower chassis 1 is provided with a side grass discharge port 11, one end of the side grass discharge port 11, which is close to the grass discharge air duct mechanism 2, is connected with a side grass discharge port cover plate 18 through hinges, which can be buckled and covered outside the side grass discharge port 11, the side grass discharge port cover plate 18 is arranged to cover the side grass discharge port 8, when the grass is collected, the cut grass can be discharged through the grass discharge port 7 to be collected, the grass discharge pipe 8 is not connected with the grass bag when the grass is not required to be collected, and the side grass discharge port cover plate 18 is opened, make two grass of grass discharge port 11 and grass discharge port 7 of side can both arrange the grass, improve row's grass efficiency, arrange grass port 7 and row's grass pipe 8 intercommunication, process grass that grass mowing subassembly 6 cut gets into row's grass port 7 along with the air current, through row's grass pipe 8 gets into and collects in the grass bag, row's grass pipe 8 bottom sets up an opening to rotate at the opening part and connect one can the lock at the flip 15 of arranging grass pipe 8 bottom, conveniently open row's grass pipe 8, do benefit to row's grass pipe 8 of clearance, row's grass pipe 8 skew row's grass one end of grass pipe 7 runs through row's grass air duct mechanism 2 and fixed connection on row's grass air duct mechanism 2.

As shown in fig. 1, 2 and 3, the grass discharge air duct mechanism 2 includes two side baffles 202, a rear baffle 203, two side plates 204 and a turnover cover plate 201, the two side plates 204 are respectively and fixedly connected to two sides of the rear baffle 203, the two side baffles 202 are fixedly connected to the connecting member 12 on the lawn mower chassis 1 through bolts, the two side plates 204 are fixedly mounted on one side of the rear baffle 203, the turnover cover plate 201 is rotatably connected to the two side plates 204 through hinge shafts, the turnover cover plate 201 capable of being turned over is arranged at the top end of the grass discharge air duct mechanism 2 to open the top end of the grass discharge air duct mechanism 2 for cleaning, a hole with the same size as the grass discharge port 7 is formed in the rear baffle 203 and corresponds to the hole in position for connecting the grass discharge pipe 8, so that the grass discharge pipe 8 can directly discharge grass into a grass bag for collection.

As shown in fig. 1, the side plate 204 has a grid-like structure, which is beneficial for heat dissipation.

The side plate is manufactured by the following processing steps:

the method comprises the following steps of: 70-90 parts of polyphenyl ether, 10-15 parts of polyacetamide, 2-5 parts of borax, 3-6 parts of calcium carbonate, 2-5 parts of a stabilizer, 0.5-1 part of an antistatic agent and 5-8 parts of carbon fibers;

step two, fully mixing and heating the raw materials in the step one;

pouring and molding the raw materials mixed and heated in the step two into a template through a mold;

step four, cutting the template in the step three and then spraying paint;

and step five, standing the side plate sectional material piece sprayed in the step four for about 2 minutes, and then baking the side plate sectional material piece at 40' C for about 15 minutes to form a film so as to form the side plate 204.

In the lawn mower chassis with the rear-in type grass discharging air duct in the embodiment of the invention, in a preferred embodiment, the side plate is composed of the following raw materials in parts by weight: 70 parts of polyphenyl ether, 10 parts of polyacetamide, 2 parts of borax, 3 parts of calcium carbonate, 2 parts of a stabilizer, 0.5 part of an antistatic agent and 5 parts of carbon fiber, wherein in a more preferred embodiment, the side plate is prepared from the following raw materials in parts by weight: 90 parts of polyphenyl ether, 15 parts of polyacetamide, 5 parts of borax, 6 parts of calcium carbonate, 5 parts of a stabilizer, 1 part of an antistatic agent and 8 parts of carbon fiber. The side plate has the effects of environmental protection, wear resistance and flame retardance by arranging the polyphenyl ether, and the carbon fiber is a special fiber consisting of carbon elements and has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like by adding the carbon fiber into the raw materials. The shape is fibrous, and the graphite microcrystalline structure is preferentially oriented along the fiber axis, so that the strength and the modulus are high along the fiber axis direction. The density of carbon fiber is little, consequently than intensity with than the modulus high, make synthetic template intensity higher, difficult fracture, life is longer, can make the curb plate have the altitude degree through adding borax and calcium carbonate, wear-resisting difficult wearing and tearing performance, through adding antistatic agent in the raw materials, the back is made to the curb plate, the antistatic agent molecule is by the inside migration to the surface of curb plate, and form even antistatic layer on the surface, thereby reduce the surface resistivity of curb plate, alleviate the static accumulation of curb plate in the use.

In the lawn mower chassis with the rear-in type grass discharging air channel in the embodiment of the invention, in a preferred embodiment, the stabilizer is zinc oxide or zinc sulfide, in a more preferred embodiment, the stabilizer is zinc oxide and zinc sulfide, and the heat stability of the polymer can be improved by adding a heat stabilizer.

In the lawn mower chassis with the rear-in grass discharging air duct in the embodiment of the invention, in a preferred embodiment, the spray paint is metal paint, the paint film is tough and strong in adhesive force, has extremely strong ultraviolet resistance, corrosion resistance and high fullness, can comprehensively improve the service life and self-cleaning property of the coating, and the surface of the side plate 204 is metallic by spraying the metal effect paint on the surface of the side plate, so that the appearance is improved, the aging is not easy to occur, and the side plate is not easy to be polluted.

As shown in fig. 1, 2 and 3, the lawn mower chassis 1 is provided with a heat dissipation opening 9 at a position near the grass discharge opening 7, and a heat dissipation fin 14 is arranged in the heat dissipation opening 9, so that the heat dissipation fin 14 is beneficial to heat dissipation of the lawn mower during use, and the service life of the lawn mower is prolonged.

As shown in fig. 1 and 2, the bottom end of the grass discharge pipe 8 is provided with an opening, the opening is rotatably connected with a flip cover 15 which can be buckled at the bottom end of the grass discharge pipe 8, the flip cover 15 can be opened after the lawn mower is used to clean the inside of the grass discharge pipe 8, the grass discharge pipe 8 can be directly cleaned without being detached, and the lawn mower is convenient and fast and saves time and labor.

As shown in fig. 1 and 2, a temperature sensor 16 and an alarm 17 are mounted at the top of the bottom end of the lawn mower chassis 1, the temperature sensor 16 is electrically connected with the alarm 17, the rotating speed of the mowing tool assembly 6 is increased along with the increase of the operating gear of the lawn mower, so that the generated heat is increased, and the situation of untimely heat dissipation is caused, when the temperature sensor 16 senses that the temperature in the lawn mower chassis 1 is continuously high, a signal is transmitted to the alarm 17 to give an alarm, an operator is reminded to reduce the gear through the alarm 17, the lawn mower is protected, and the service life of the lawn mower is prolonged.

As shown in fig. 3, one end of the turning cover plate 201, which rotates, is connected with a tension spring 13, the other end of the tension spring 13 is fixedly connected to the lawn mower chassis 1, and the elasticity of the tension spring 13 is utilized to enable the turning cover plate 201 to automatically return to the top of the closed grass discharging air channel mechanism 2 after being opened, so that the turning cover plate is convenient and fast.

As shown in fig. 2, the mower blade assembly 6 includes a blade of fan blade structure, and a holder and a washer for mounting the blade, the blade is mounted on the holder by a bolt, and the holder is mounted on the crankshaft of the engine 5 for normal operation of the mower blade assembly 6.

As shown in fig. 1 and 2, arrange 2 bottoms of grass air duct mechanism for open, be favorable to the heat dissipation to conveniently clear up simultaneously and arrange grass air duct mechanism 2, lawn mower chassis 1 is circular vortex shape, through design lawn mower chassis 1 is circular vortex shape, makes the lawn mower does benefit to the rotatory trend that produces of cutting blade of flabellum mechanism when the operation air current smoothly is going on steadily, can reduce the resistance, raises the efficiency, 1 upper surface on lawn mower chassis is the slope form, promptly 1 back upper place on lawn mower chassis highly is higher than the height of 1 preceding top on lawn mower chassis is favorable to the smooth and easy nature of lawn mower air current when the operation, reduces air resistance.

The engine 5 is started to drive the mower component 6 to rotate, the rotating speed of the output shaft of the gearbox is changed by shifting the gear adjusting rod 4, so that the rotating speed of the crankshaft of the engine 5 is changed, the rotating speed of the mower component 6 is adjusted, the airflow generated by the rotation of the mower component 6 in the circular turbine-shaped lawn mower chassis 1 drives the chopped weeds to rotate, the side grass discharging port cover plate 18 is closed when the chopped weeds need to be collected, the grass discharging pipe 8 is connected with a grass bag, the chopped weeds enter the grass discharging pipe 8 along the grass discharging port 7 with a large opening structure at the rear side of the lawn mower chassis 1 and enter the grass bag along the grass discharging pipe 8 for collection, when the chopped weeds do not need to be collected, the side grass discharging port cover plate 18 is opened, meanwhile, the grass discharging pipe 8 is not connected with the grass bag, so that the grass discharging port 7 and the side grass discharging port 11 can discharge the chopped weeds, the grass discharging efficiency can be improved, and the heat of the lawn mower chassis is led out by using the radiating fins 14 in the radiating port 9 at the rear of the lawn mower chassis 1, and 2 discharge through open row grass air duct mechanism in bottom, the radiating efficiency is improved, when the high-grade long time of lawn mower is used, the heat in lawn mower chassis 1 can not get timely heat dissipation, temperature sensor 16 senses when sensing the temperature in lawn mower chassis 1 and lasting higher, then can transmit the signal and report to the police for siren 17, remind the operator to turn down the gear through siren 17, do benefit to the protection lawn mower, can clean row grass air duct mechanism 2 through opening flip 201 after the lawn mower uses, open flip simultaneously and can clean row grass inside the pipe 8, flip 201 can reply automatically under the effect of extension spring 13 after the cleanness, make things convenient for next use.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.