CN215683372U

CN215683372U - Height-adjusting structure of grass pushing machine

Info

Publication number: CN215683372U
Application number: CN202122070127.9U
Authority: CN
Inventors: 吴平
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-01
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to the technical field of a grass pushing machine, in particular to a height adjusting structure of the grass pushing machine, which comprises a first wheel carrier, a second wheel carrier, a height adjusting handle and a limiting structure, wherein two ends of the first wheel carrier are respectively connected with a first travelling wheel in a rotating manner, and a first connecting position which is eccentrically arranged with the first travelling wheel is arranged on the first wheel carrier; two ends of the second wheel frame are respectively in rotating connection with the second travelling wheels, and a second connecting position which is eccentrically arranged with the second travelling wheels is arranged on the second wheel frame; the height-adjusting handle is arranged on one side of the frame of the grass mower and is fixedly connected with the first wheel carrier; one end of the height-adjusting connecting rod is rotatably connected to the height-adjusting handle, and the other end of the height-adjusting connecting rod is rotatably connected to the second wheel frame; the frame of the grass mower is arranged on the first connecting position of the first wheel frame and the second connecting position of the second wheel frame. The height adjusting structure can realize the free adjustment of the height of the grass mower.

Description

Height-adjusting structure of grass pushing machine

Technical Field

The utility model relates to the technical field of a grass mower, in particular to a height adjusting structure of the grass mower.

Background

A grass mower is also called a mower, a lawn trimmer and the like, and is a common mechanical tool for trimming lawns, vegetation and the like. When the grass mower is used for weeding, only the operation workers need to push the hand push handle, the walking wheels drive the rack to move, and meanwhile, the cutting knife mechanism trims the lawn, so that the operation time of the operation workers can be greatly saved, a large amount of manpower resources are reduced, and the grass mower is widely used by people.

At present, the height position of the body of a common grass mower and the ground is relatively fixed, and the grass mower cannot freely adjust the mowing height and cannot meet the requirements of different users when in use; the grass mower with the height-adjusting function has a relatively complex structure and is relatively expensive. Therefore, it is desirable to provide an economical and easy-to-operate mower with height adjustment function.

SUMMERY OF THE UTILITY MODEL

In view of the above disadvantages of the prior art, the present invention aims to provide a height adjusting structure of a grass mower to improve the problem that the mowing height cannot be freely adjusted in the prior art for the grass mower.

In order to achieve the above and other related objects, the present invention provides a height adjusting structure of a grass mower, comprising a first wheel frame, a second wheel frame, a height adjusting handle and a limiting structure, wherein two ends of the first wheel frame are respectively rotatably connected with a first traveling wheel of the grass mower, and the first wheel frame is provided with a first connecting position eccentrically arranged with the first traveling wheel; two ends of the second wheel carrier are respectively and rotatably connected with a second travelling wheel of the grass pushing machine, and a second connecting position eccentrically arranged with the second travelling wheel is arranged on the second wheel carrier; the height-adjusting handle is arranged on one side of the frame of the grass mower and is fixedly connected with the first wheel carrier; one end of the height-adjusting connecting rod is rotatably connected to the height-adjusting handle, and the other end of the height-adjusting connecting rod is rotatably connected to the second wheel frame; the frame of the grass mower is arranged on the first connecting position of the first wheel frame and the second connecting position of the second wheel frame.

In an example of the present invention, the limiting structure includes a boss and a plurality of limiting grooves, the boss is disposed on a side of the heightening handle facing the frame, and the plurality of limiting grooves are disposed on a side of the frame facing the heightening handle.

In an example of the present invention, the plurality of limiting grooves are sequentially arranged along the rotation arc of the heightening handle.

In an example of the present invention, the first wheel carrier includes a first wheel shaft at both ends, a first mounting shaft connected to the frame, and a first connecting rod connecting the first wheel shaft and the first mounting shaft, and the first connecting position is disposed on the first mounting shaft.

In one example of the present invention, the first axle and the first mounting shaft are parallel to each other.

In an example of the present invention, a first groove for accommodating the first connecting rod is disposed at the bottom of the height-adjusting handle, and a first through hole for passing the first axle is disposed at a position of the first groove corresponding to the first axle.

In an example of the utility model, a mounting screw hole is formed in a position, corresponding to the boss, of one side, away from the rack, of the heightening handle, and the heightening connecting rod is hinged with the adjusting handle through matching of a screw and the mounting screw hole.

In one example of the present invention, the second wheel carrier includes a second wheel shaft at both ends, a second mounting shaft connected to the frame, and a second connecting rod connecting the second wheel shaft and the second mounting shaft.

In one example of the present invention, the second axle and the second mounting shaft are parallel to each other.

In one example of the utility model, the height-adjusting connecting rod is connected with the second wheel carrier through a rotating disc, one end of the rotating disc is hinged with the height-adjusting connecting rod, and the other end of the rotating disc is fixedly connected with the second wheel carrier.

In an example of the present invention, the turntable is a triangular turntable, one corner of the triangular turntable is hinged to the height-adjusting connecting rod, and one side of the triangular turntable opposite to the height-adjusting connecting rod is fixedly connected to the second wheel carrier.

In an example of the present invention, a second groove for accommodating the second connecting rod is disposed on the turntable, and a second through hole for passing the second axle is disposed on a position of the second groove corresponding to the second axle.

In an example of the present invention, a screw connection plate is disposed at a position corresponding to the first connection position and the second connection position on the bottom of the frame, and the first wheel carrier and the second wheel carrier are located between the screw connection plate and the frame.

In one example of the utility model, the height-adjusting link is arranged in the frame in a penetrating way.

In an example of the utility model, shaft grooves for the wheel shafts to pass through are arranged on the two sides of the frame corresponding to the positions of the first wheel frame and the second wheel frame.

In one example of the utility model, the first wheel carrier is arranged at the front end of the grass mower, the second wheel carrier is arranged at the rear end of the grass mower, and the height-adjusting handle is arranged on the first wheel carrier.

In summary, the utility model provides a height adjusting structure of a grass mower, the height adjusting structure drives a first wheel frame to rotate around the center of a first travelling wheel through a height adjusting handle, drives a height adjusting connecting rod to rotate around a connecting point with the height adjusting handle, and drives a second wheel frame to rotate around the center of a second travelling wheel through the height adjusting connecting rod. The height-adjusting gear is arranged on the rack and can be directly processed through injection molding of a mold, the size is easier to control, an additional height-adjusting gear plate is not needed, and the structure is simpler; in addition, the height-adjusting structure is directly arranged on the frame, and the height-adjusting connecting rod is arranged in the frame in a penetrating way, so that the structure of the grass mower can be prevented from being overstaffed, and the appearance is more attractive.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a lawn mower according to an embodiment of the present invention;

FIG. 2 is a schematic bottom view of the lawn mower of the present invention;

FIG. 3 is a schematic view of an elevation structure and a frame of the lawn mower of the present invention;

FIG. 4 is a schematic view of an elevation adjustment structure of the lawn mower according to an embodiment of the present invention;

FIG. 5 is a schematic view of another angle of the height adjustment structure of the lawnmower of the present invention;

FIG. 6 is a schematic view of the height adjustment handle of the lawn mower in one embodiment of the height adjustment structure of the present invention;

FIG. 7 is a schematic view of a turntable of the height adjustment structure of the lawn mower according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of the lawn mower with the battery cover removed according to an embodiment of the present invention;

FIG. 9 is a schematic view of a housing of the lawn mower according to an embodiment of the present invention;

FIG. 10 is an enlarged view of region I in FIG. 9;

FIG. 11 is a schematic view of a handle of the lawn mower of the present invention;

FIG. 12 is a partial cross-sectional view of the attachment of the handle to the cover of the lawnmower of the present invention.

Description of the element reference numerals

100. A frame; 200. a first running wheel; 300. a second road wheel; 400. a push rod; 401. a first push rod; 402. a second push rod; 403. a locking structure; 500. a height-adjusting structure; 501. a first wheel carrier; 502. a second wheel carrier; 503. heightening the handle; 504. a height-adjusting connecting rod; 505. a boss; 506. a limiting groove; 5011. a first axle; 5012. a first mounting shaft; 5013. a first connecting rod; 5014. a first connection site; 5021. a second wheel axle; 5022. a second mounting shaft; 5023. a second connecting rod; 5024. a second connection bit; 5031. a first groove; 5032. a first through hole; 5033. mounting a screw hole; 507. a turntable; 5071. a second groove; 5072. a second through hole; 508. a screw connecting plate; 509. a first wheel carrier shield; 510. a second wheel carrier guard; 101. a shaft groove; 102. a cutter mounting hole; 600. a housing; 700. a handle; 800. a battery pack receiving cavity; 801. a battery cover; 900. a padded screw; 601. a handle mounting area; 602. a handle mounting groove; 603. a waterproof boss; 6031. a limiting hole; 604. a first screw hole; 701. a limiting column; 702. and a second screw hole.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a height-adjusting structure of a grass mower, so as to solve the problem that the existing grass mower cannot freely adjust the mowing height.

Referring to fig. 1, the present invention provides a grass mower, which includes a frame 100, a plurality of traveling wheels respectively disposed on two sides of the frame 100, a cutting mechanism (not shown) mounted on the frame 100, a housing 600 mounted on the frame 100, a push rod 400 mounted at the rear end of the frame 100, and a height-adjusting structure 500 for adjusting the height of the grass mower, wherein the traveling wheels roll to realize rapid transfer of the grass mower.

Referring to fig. 1 and 2, in one example, the lawnmower includes two first road wheels 200 and two second road wheels 300, wherein the two first road wheels 200 are oppositely disposed at the front end of the frame 100, and the two second road wheels 300 are oppositely disposed at the rear end of the frame 100. A cutter mounting hole 102 is formed in the bottom of the frame 100, the cutter mounting hole 102 can be of a vortex structure, for example, the cutting mechanism comprises a cutting cutter, a driving motor and a battery pack, the cutting cutter is mounted at the bottom of the cutter mounting hole 102, the driving motor is mounted inside the frame 100 and located above the cutter mounting hole 102, and an output shaft of the driving motor is connected with the cutting cutter; the battery pack is connected with the driving motor circuit and provides power for the driving motor.

Referring to fig. 1 to 4, the present invention provides a height adjusting structure of a grass mower, the height adjusting structure 500 includes a first wheel frame 501, a second wheel frame 502, a height adjusting handle 503, a height adjusting connecting rod 504 and a limiting structure for limiting the rotation of the height adjusting handle, wherein two ends of the first wheel frame 501 are respectively rotatably connected with first traveling wheels 200 at two sides of the frame, a first connecting position 5014 for installing the frame 100 is arranged on the first wheel frame 501 and eccentrically arranged with the first traveling wheels 200, two ends of the second wheel frame 502 are respectively rotatably connected with second traveling wheels 300 at two sides of the frame, a second connecting position 5024 for installing the frame 100 is arranged on the second wheel frame 502 and eccentrically arranged with the second traveling wheels 300, and the frame 100 is installed on the first connecting position 5014 and the second connecting position 5024; the height-adjusting handle 503 is arranged at one side of the frame 100 and is fixedly connected with the first wheel frame 501; one end of the height-adjusting link 504 is rotatably connected to the height-adjusting handle 503 to form an eccentric structure with the rotation center of the first traveling wheel 200; the other end of the height-adjusting connecting rod 504 is rotatably connected to the second wheel frame 502, and forms an eccentric structure with the rotating center of the second traveling wheel 300; the limiting structure is disposed between the height-adjusting handle 503 and the frame 100 for adjusting the height-adjusting gear and limiting the rotation of the height-adjusting handle 503.

Referring to fig. 2, 4 and 5, the first wheel frame 501 includes first wheel shafts 5011 at both ends, a first mounting shaft 5012 at the center, and a first connecting rod 5013 connecting the first wheel shafts 5011 and the first mounting shaft 5012; the first wheel shafts 5011 at two ends are respectively rotatably connected with the first traveling wheels 200 at two sides of the rack, the first mounting shaft 5012 is provided with a first connection position 5014 of the rack 100, one end of the first connection rod 5013 is connected with the first wheel shaft 5011, and the other end is connected with the first mounting shaft 5012. The second wheel frame 502 is similar to the first wheel frame 501 in structure, and includes a second wheel axle 5021 located at two ends, a second installation shaft 5022 located at the center, and a second connection rod 5023 connecting the second wheel axle 5021 with the second installation shaft 5022, wherein the second wheel axle 5021 at two ends is respectively rotatably connected with the second traveling wheels 300 on two sides of the rack, a second connection position 5024 of the rack 100 is arranged on the second installation shaft 5022, one end of the second connection rod 5023 is connected with the second wheel axle 5021, and the other end is connected with the second installation shaft 5012. Preferably, the first wheel 5011, the first mounting shaft 5012, and the first connecting rod 5013 are integrated, the second wheel 5021, the second mounting shaft 5022, and the second connecting rod 5023 are integrated, the first wheel 5011, the first mounting shaft 5012, the second wheel 5021, and the second mounting shaft 5022 are parallel to each other, the first connecting rod 5013 and the second connecting rod 5023 are parallel to each other, the first wheel frame 501 is a Z-shaped structure, and the second wheel frame 502 is a Z-shaped structure.

Referring to fig. 2 and 3, the positions of the rack 100 corresponding to the first connection position 5014 and the second connection position 5024 are respectively installed with a screw connection plate 508, each screw connection plate 508 is perpendicular to its corresponding installation shaft, two ends of the screw connection plate 508 are respectively fixed on the rack 100 by screws, and the first installation shaft 5012 and the second installation shaft 5022 pass through a gap between the screw connection plate 508 and the rack 100. The frame 100 is further provided with shaft slots 101 through which mounting shafts pass, corresponding to both sides of the first and second wheel frames 200 and 300. This design neither hinders the rotation of installation axle but also enables frame 100 to prop it up along with the rotation of installation axle, and then realizes the regulation of lawnmower height.

Referring to fig. 3 to 6, the limiting structure includes a boss 505 and a plurality of limiting grooves 506, the boss 505 is disposed on a side of the height-adjusting handle 503 facing the rack 100, and the plurality of limiting grooves 506 are disposed on a side of the rack 100 facing the height-adjusting handle 503. Preferably, the boss 505 is disposed at the middle of the height-adjusting handle 503, and the plurality of limiting grooves 506 are sequentially disposed on the frame 100 along the rotation arc of the height-adjusting handle 503. The bottom of the height-adjusting handle 503 is provided with a first groove 5031 for accommodating the first connecting rod 5013, and a first through hole 5032 for the first axle 5011 to pass through is formed at a position of the first groove 5031 corresponding to the first axle 5011. When the device is installed, two ends of the first wheel frame 501 respectively penetrate through the shaft grooves 101 on two sides, the first connecting rod 5013 at one end facing the height-adjusting handle 503 is installed in the first groove 5031, the first wheel shaft 5011 penetrates through the first through hole 5032 to be rotatably connected with the first traveling wheel 200, one end of the first wheel shaft 5011 deviating from the height-adjusting handle 503 penetrates through the first wheel frame cover 509 to be rotatably connected with the first traveling wheel 200 on the other side, and similarly, the first groove for accommodating the first connecting rod 5013 and the first through hole for the first wheel shaft 5011 to penetrate are formed in the first wheel frame cover 509. The limiting groove 506 is directly arranged on the rack 100, so that the rotation of the heightening handle 503 can be limited, the heightening plate can be used as the heightening limiting plate, the structure is simpler, the limiting groove 506 can be directly processed through injection molding, and the size is controlled more accurately.

Referring to fig. 3 to 7, one end of the height-adjusting link 504 is rotatably connected to the height-adjusting handle 503, the other end is rotatably connected to the second wheel frame 502, one end of the height-adjusting link 504 connected to the height-adjusting handle 503 is hinged by a screw, for example, a mounting screw hole 5033 is provided at a position corresponding to the boss 505 on a side of the height-adjusting handle 503 away from the rack 100, and the height-adjusting link 504 is hinged to the height-adjusting handle 503 by the cooperation of the screw and the mounting screw hole 5033. The other end of the height-adjusting link 504 is rotatably connected to the second wheel frame 502 via a rotating disc 507, preferably, the rotating disc 507 is a triangular rotating disc, one corner of the triangular rotating disc is rotatably connected to the height-adjusting link 504, a second groove 5071 for accommodating the second connecting rod 5023 is disposed at the bottom of the triangular rotating disc opposite to the connecting angle of the height-adjusting link 504, and a second through hole 5072 for the second wheel axle 5021 to pass through is disposed at a position of the second groove 5071 corresponding to the second wheel axle 5021. Two ends of the second wheel frame 502 respectively penetrate through the shaft grooves 101 on two sides of the frame, a second connecting rod 5023 at one end of the second wheel frame facing the height-adjusting connecting rod 504 is mounted in the second groove 5071, a second wheel shaft 5022 penetrates through a second through hole 5072 to be rotatably connected with the second traveling wheel 300, one end of the second wheel frame departing from the height-adjusting connecting rod 504 is rotatably connected with the second traveling wheel 300 on the other side through the second wheel frame shield 510, and similarly, the second wheel frame shield 510 is provided with a second groove for accommodating the second connecting rod 5023 and a second through hole for the second wheel shaft 5021 to penetrate through. Preferably, the height-adjustable linkage 504 extends through the frame 100, which prevents the mower from becoming too bulky due to the height-adjustable structure, and thus the appearance of the mower is more attractive.

Referring to fig. 3 and 4, when the height of the lawn mower is adjusted, the height adjustment handle 503 is pulled out from the limiting groove 506, and the height adjustment handle 503 is rotated, because the height adjustment handle 503 is fixedly connected with the first wheel frame 501, the height adjustment connecting rod 504 is rotatably connected with the height adjustment handle 503, and the other end of the height adjustment connecting rod 504 is rotatably connected with the second wheel frame 502 through the rotating disc 507, the height adjustment handle 503 will drive the first wheel frame 501 to rotate around the center of the first traveling wheel 200, and because the first connection position 5014 of the installation frame 100 on the first wheel frame 501 and the first traveling wheel 200 are eccentrically arranged, the height of the first connection position 5014 relative to the ground is changed; meanwhile, the height-adjusting handle 503 drives the height-adjusting connecting rod 504 to rotate, the height-adjusting connecting rod 504 drives the turntable 507 to rotate around the connecting point of the two, the turntable 507 is fixedly connected with the second wheel frame 502, the second wheel frame 502 rotates around the center of the second traveling wheel 300, and the second connecting position 5024 of the mounting frame 100 of the second wheel frame 502 is eccentrically arranged with the second traveling wheel 300, so that the height of the second connecting position 5024 relative to the ground is changed. Since the frame 100 of the lawnmower is fixedly connected to the first connection position 5014 and the second connection position 5024, the height of the frame 100 from the ground also varies with the height of the first connection position 5014 and the second connection position 5024 from the ground. After the height of the rack 100 is adjusted to a desired height by the height-adjusting handle 503, the height-adjusting handle 503 is pushed into the corresponding limiting groove 506, so as to ensure that the height-adjusting handle 503 cannot be separated from the limiting groove 506 after the position of the rack 100 is fixed.

Referring to fig. 1 and 8 to 12, the casing 600 covers the housing 100 to shield the driving motor and prevent the motor from being damaged. One side of the housing is provided with a battery pack accommodating cavity 800, a battery cover 801 is arranged on the battery pack accommodating cavity 800, and the battery pack is installed in the battery pack accommodating cavity 800 and is shielded by the battery cover 801. The side of the cover 600 facing away from the battery receiving cavity 800 is recessed toward the housing 100 to form a handle mounting area 601, and the handle 700 is detachably mounted on the handle mounting area 601. In an embodiment, a handle mounting groove 602 is formed in a position corresponding to a handle end portion in the handle mounting area 601, a waterproof boss 603 is arranged in each handle mounting groove 602, a limit hole 6031 is formed in each waterproof boss 603, a first screw hole 604 is formed in a position, corresponding to the limit hole 6031, of the housing 600, the waterproof boss 603 is communicated with the first screw hole 604, water can flow away along two sides of the boss, and water is effectively prevented from entering the grass pusher from the limit hole 6031 and the first screw hole 604. Correspondingly, the end of the handle 700 is provided with a limiting column 701 matched with the limiting hole 6031, and the limiting column 701 is provided with a second screw hole 702 communicated with the first screw hole 604. When the handle 700 is installed, the limiting column 701 at the end of the handle 700 is inserted into the limiting hole 6031 to realize positioning, and the screw penetrates through the first screw hole 604 and the second screw hole 702 to realize fastening. Preferably, the screw is a padded screw 900, and the use of the padded screw 900 increases the useful life of the handle.

Referring to fig. 1, the push rod 400 of the grass mower has an extending state inclined to the rear of the frame 100 and a storage state folded forward to be parallel to the frame 100, when the grass mower is used for mowing, the push rod 400 is stretched backward to be in the extending state, a worker can push the grass mower to walk through the push rod 400, and when the grass mower is not used, the push rod 400 is folded onto the frame of the grass mower, so that the grass mower is convenient to store. For example, the push rod 400 comprises a first push rod 401 and a second push rod 402, the first push rod 401 is connected with the frame 100 through a locking structure 403, and the structure of the locking structure 403 is not limited as long as the push rod 400 can be folded forwards around the connection with the frame 100 to be parallel to the frame 100 and extended backwards to realize the pushing of the grass mower; the second push rod 402 is fixed at the upper end of the first push rod 401 through the matching of bolts and nuts, when the push rod 400 is in a storage state, the nuts are unscrewed, and the second push rod 402 can be folded above the first push rod 401 in a direction departing from the rack; when the push rod 400 is in use, the nut is tightened to secure the second push rod 400 to the first push rod 401. The push rod 400 is designed into a sectional structure, so that the height of the push rod 400 can be adjusted, and the push rod is suitable for different people.

Because the center of gravity of the lawnmower can move forward and backward before and after the push rod 400 is folded, the handle 700 is mounted to ensure that the center of gravity of the lawnmower is always within the projection of the handle 700 in the direction of the frame 100 before and after the push rod 400 is folded. Thus facilitating the carrying of the mower.

It should be noted that the parts of the grass mower not described in detail are the structures commonly used in the existing grass mowers, and are not described again here.

In summary, the utility model provides a height adjusting structure of a grass mower, the height adjusting structure drives a first wheel carrier and a height adjusting connecting rod to rotate by rotating a height adjusting handle, the height adjusting connecting rod drives a second wheel carrier to rotate, and because the first wheel carrier and the second wheel carrier are provided with frame connecting positions eccentrically arranged with walking wheels, the frame connecting positions support the frame along with the rotation of the first wheel carrier and the second wheel carrier, thereby realizing the height adjustment of the grass mower. The utility model has simple structure and convenient adjustment, can realize the height adjustment of the grass mower, and is convenient to assemble. Therefore, the utility model effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A height-adjusting structure of a grass mower, comprising:

the two ends of the first wheel frame are respectively connected with the first travelling wheel in a rotating way, and a first connecting position which is eccentrically arranged with the first travelling wheel is arranged on the first wheel frame;

the two ends of the second wheel carrier are respectively and rotatably connected with a second travelling wheel, and a second connecting position eccentrically arranged with the second travelling wheel is arranged on the second wheel carrier;

the heightening handle is arranged on one side of the frame of the grass pushing machine and is fixedly connected with the first wheel carrier;

one end of the height-adjusting connecting rod is rotationally connected to the height-adjusting handle, and the other end of the height-adjusting connecting rod is rotationally connected to the second wheel carrier; and

the limiting structure is arranged between the heightening handle and the frame of the grass pushing machine and used for limiting the rotation of the heightening handle;

wherein the frame of the lawnmower is mounted to the first connection location and the second connection location.

2. The heightening structure of a grass mower according to claim 1, wherein said limiting structure comprises a boss provided on a side of said heightening handle facing said frame and a plurality of limiting grooves provided on a side of said frame facing said heightening handle.

3. The heightening structure of a grass mower according to claim 2, wherein said plurality of position-limiting grooves are provided in sequence along an arc of rotation of said heightening handle.

4. The height adjusting structure of a grass mower according to claim 1, wherein said first wheel carrier comprises a first wheel shaft, a first mounting shaft, and a first connecting rod connecting said first wheel shaft and said first mounting shaft, said first wheel shaft being rotatably connected to said first traveling wheel, said first connecting position being provided on said first mounting shaft.

5. The height-adjusting structure of a grass mower according to claim 4, wherein a first groove for accommodating the first connecting rod is formed at the bottom of the height-adjusting handle, and a first through hole for the first axle to pass through is formed at a position of the first groove corresponding to the first axle.

6. The heightening structure of a grass mower according to claim 2, wherein a mounting screw hole is provided on a side of the heightening handle away from the frame corresponding to the boss, and the heightening connecting rod is hinged to the heightening handle through cooperation of a screw and the mounting screw hole.

7. The height adjusting structure of a grass mower according to claim 1, wherein the second wheel carrier comprises a second wheel shaft, a second mounting shaft and a second connecting rod connecting the second wheel shaft and the second mounting shaft, the second wheel shaft is rotatably connected with the second road wheel, and the second connecting position is arranged on the second mounting shaft.

8. The height adjusting structure of a grass mower according to claim 7, wherein the height adjusting connecting rod is connected with the second wheel carrier through a rotating disc, one end of the rotating disc is hinged with the height adjusting connecting rod, and the other end of the rotating disc is fixedly connected with the second wheel carrier.

9. The height-adjusting structure of a grass mower according to claim 8, wherein a second groove for accommodating the second connecting rod is formed in the rotary table, and a second through hole for the second axle to pass through is formed in a position of the second groove corresponding to the second axle.

10. The height adjusting structure of a grass mower according to claim 1, wherein a screw connecting plate is provided at a position of the bottom of the frame corresponding to the first connecting position and the second connecting position, and the first wheel carrier and the second wheel carrier are located between the screw connecting plate and the frame.

11. The heightening structure of a lawnmower according to claim 1, wherein the heightening link is provided through the frame.

12. The height adjusting structure of a grass mower according to claim 1, wherein shaft grooves for passing through the wheel shafts are formed on the two sides of the frame at positions corresponding to the first wheel carrier and the second wheel carrier.

13. The height adjusting structure of a grass mower according to claim 1, wherein said first wheel frame is provided at a front end of said grass mower, said second wheel frame is provided at a rear end of said grass mower, and said height adjusting handle is mounted on said first wheel frame.