A mower with adaptive terrain and shock absorption function and a method for using the same

Abstract

The present application relates to the technical field of horticultural equipment, and discloses a mower with adaptive terrain and damping functions, which comprises a rack, four supporting legs, a mowing mechanism and a power device. The four supporting legs are arranged at the bottom of the rack and each comprises a supporting rod and an adjusting arm rotatably connected to one end of the supporting rod. The mowing mechanism is arranged at the top of the rack. The mower with adaptive terrain and damping functions and the using method thereof are characterized in that the four supporting legs and the mowing mechanism cooperate with each other, so that the supporting rod and the adjusting arm can sense the protrusions and depressions of the lawn ground in real time, drive the middle piece to deflect flexibly, adjust the inclination angle of the main cutting blade, make the blade always adhere to the undulating lawn surface, effectively solve the problems of missed cutting and repeated cutting on the concave-convex ground, improve the trimming quality, and avoid direct impact of the blade on the ground, thereby reducing the component loss.

Description

Technical Field

[0001] This invention relates to the field of gardening equipment technology, specifically to a lawnmower with adaptive terrain and shock absorption functions and its usage method. Background Technology

[0002] Lawn mowers are small garden maintenance machines widely used in daily life. They mainly rely on manual pushing to complete lawn mowing operations. The market mainly divides them into three categories: purely manual, fuel-powered, and electric. These lawn mowers are compact in size, flexible in movement, and easy to operate, making them suitable for routine lawn mowing in home backyards, private gardens, and small green areas in residential communities.

[0003] However, most existing lawnmowers use a rigid, one-piece frame structure, with the body and cutting chassis fixedly connected. The chassis angle and height cannot be adjusted automatically to adapt to uneven ground. Therefore, when working on uneven surfaces, uneven lawn mowing, missed areas, or repeated cutting can occur. This not only results in poor mowing quality but also easily damages the blades and body due to the chassis scraping against raised ground, significantly shortening the lawnmower's lifespan. Furthermore, existing lawnmowers generally rely solely on simple rubber feet or thin connecting parts for cushioning, allowing vibrations from ground bumps to be directly transmitted to the handles and the entire machine. Prolonged use can cause numbness in the hands and arm pain for operators, significantly increasing labor intensity. It also exacerbates loosening and wear between machine components, and noticeably increases operating noise, further reducing the user experience and the lawnmower's operational stability. Summary of the Invention

[0004] (a) Technical problems to be solved: To address the shortcomings of existing technologies, this invention provides a lawnmower with adaptive terrain and shock absorption functions, as well as its usage method. This solves the problems mentioned in the background art, such as existing lawnmowers being unable to adapt to undulating terrain, having poor mowing results, easily damaged parts, and poor shock absorption leading to excessive vibration and a poor user experience.

[0005] (II) Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: a lawnmower with adaptive terrain and shock absorption functions, comprising: frame; Four support legs are all located at the bottom of the frame. Each support leg includes a support rod and an adjusting arm with one end rotatably connected to the support rod. The mowing mechanism includes a power unit located at the top of the frame, an intermediate component fixedly connected to the power unit, and a main cutting blade fixedly connected to the output end of the power unit. The intermediate component is rotatably connected to the adjusting arms of the four support legs and adaptively changes its own angle according to the swing angle of the four support legs. The telescopic leg includes a sliding rod sleeved to and slidably connected to the output end of the power device, an adjusting spring member fixedly connected to both the output end of the power device and the sliding rod, a secondary cutting blade and a telescopic caster fixedly connected to the sliding rod. The length of the secondary cutting blade is less than that of the primary cutting blade. The telescopic leg is used to drive the telescopic caster to always be in contact with the ground under the elastic force of the adjusting spring member, thereby driving the secondary cutting blade to maintain a constant distance from the ground.

[0006] Preferably, the support leg further includes: The first omnidirectional wheel is fixedly connected to the end of the support rod away from the frame, and the end of the support rod connected to the first omnidirectional wheel is the bottom end of the support rod.

[0007] Preferably, it further includes: A push handle is rotatably connected to the end of the frame away from the direction of travel. A receiving hole is provided on the frame so that the output end of the power unit can pass through to the bottom of the frame.

[0008] Preferably, the output end of the power unit is provided with: The driven rod is fixedly connected to the output end of the power device, extends to the side of the intermediate part away from the frame, and is fixedly connected to the main cutting blade and slidably connected to the sliding rod, for rotating under the control of the power device; A connecting sleeve is fixedly connected at one end to the power device and at the other end to the intermediate component, and is sleeved on the outside of the driven rod to protect the driven rod and transmit the movement state of the intermediate component.

[0009] Preferably, the mowing mechanism further includes: A drive component, rotatably connected to the push handle, is used to control the working state of the power device; The connecting piece is a sheet-like structure, fixedly connected to the bottom of the power unit, and located between the power unit and the frame; Several buffer elastic elements are evenly arranged between the connecting piece and the frame, with one end fixedly connected to the buffer elastic element and the other end fixedly connected to the frame, for providing buffering and restoring force for the connecting piece; Two buffer rings are fixedly connected to the two edges of the receiving hole on the frame, respectively, and their inner diameter is smaller than that of the receiving hole. They are used to prevent the mowing mechanism from directly contacting the frame when it moves with the four support legs and to provide a buffering force. A circular baffle is fixedly connected to the end of the intermediate component away from the frame and is located completely outside the main cutting blade. It is used to guide the cut grass out and prevent the grass from splashing everywhere.

[0010] Preferably, the driven rod is provided with: The inner sleeve is fixedly connected to the end of the driven rod away from the power device, and its opening faces downward; Several guide grooves are provided at the end of the driven rod away from the power device to guide the sliding rod within the driven rod.

[0011] Preferably, the telescopic leg further includes: Several guide protrusions, the same number as the number of guide grooves, are provided on the side wall of the sliding rod, for entering the corresponding guide grooves to transmit the torque of the driven rod; An outer sleeve is fixedly connected to the end of the sliding rod away from the driven rod, and its opening faces upward to enclose the inner sleeve inside itself. It is used to cooperate with the inner sleeve to isolate the sliding rod and several guide protrusions from the outside.

[0012] Preferably, the secondary cutting blade is disposed between the outer sleeve and the telescopic caster.

[0013] Preferably, it further includes: A long baffle is fixedly connected to the bottom of the frame near the push handle and extends downward to contact the ground to block the grass that is thrown out after cutting.

[0014] A method for using a lawnmower with adaptive terrain and shock absorption functions includes the following steps: a. Move the lawnmower to the lawn area to be mowed, operate the drive unit to start the power unit, the power unit works, drives the driven rod and the sliding rod to rotate synchronously, and drives the main cutting blade and the auxiliary cutting blade to rotate synchronously as well; b. Hold the push handle and push the lawnmower forward. During the movement, the four support legs swing with the undulation of the ground. The adjusting arm swings according to the swing of the support legs, so as to drive the intermediate component to adaptively adjust according to the number and angle of the swinging support legs, thereby adjusting the angle of the entire lawnmower mechanism. c. The adjusting spring component constantly applies a downward force to the sliding rod, driving the sliding rod and the telescopic caster to remain in contact with the ground, thus maintaining a constant distance between the secondary cutting blade and the ground. d. After trimming, operate the drive unit to turn off the power unit. After the main cutting blade and the secondary cutting blade have completely stopped rotating, move the lawnmower to the designated position, clean the circular baffle, the long baffle, and the main cutting blade and the secondary cutting blade of any remaining grass, and complete the operation.

[0015] (III) Beneficial Effects: The lawnmower with adaptive terrain and shock absorption functions and its method of use provided by the present invention have the following beneficial effects: 1. This lawnmower with adaptive terrain and shock absorption function and its usage method, through the cooperation of four support legs and the mowing mechanism, enables the support rod and adjusting arm to sense the convexity and depression of the lawn surface in real time, and drive the intermediate part to flexibly deflect, thereby adjusting the tilt angle of the main cutting blade, so that the blade always fits the undulating lawn surface, effectively solving the problems of missed cutting and repeated cutting on uneven ground, improving the mowing quality, and at the same time avoiding the blade directly hitting the ground, reducing component wear.

[0016] 2. The lawnmower with adaptive terrain and shock absorption function and its usage method, through the cooperation of the adjusting elastic element, guide groove and guide protrusion inside the telescopic leg, the elastic element continuously presses down to keep the telescopic universal wheel close to the ground, thereby fixing the distance of the secondary cutting blade from the ground and ensuring that the entire lawn is cut at a consistent height.

[0017] 3. The lawnmower with adaptive terrain and shock absorption function and its usage method, through the cooperation of the mowing mechanism, support leg and telescopic leg, the support leg completes the terrain angle adaptation, the telescopic leg accurately controls the cutting height, and the mowing mechanism provides stable mowing power to the mowing mechanism, so that the lawnmower can complete uniform mowing even in complex terrain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall bottom structure of the present invention; Figure 3 This is a schematic diagram of the overall side structure of the present invention; Figure 4 This is a schematic diagram of the side cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the overall structure of the support leg of the present invention; Figure 6 This is a schematic diagram of the connection structure of the rotating rod, circular baffle, main cutting blade, secondary cutting blade and telescopic caster of the present invention; Figure 7 This is a schematic diagram of the connection structure between the rotating rod and the main cutting blade of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the overall structure of the telescopic leg of the present invention; Figure 10 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 11 For the present invention Figure 4 Enlarged structural diagram at point C.

[0019] In the picture: 10. Frame; 11. Push handle; 12. Receiving hole; 20. Power unit; 201. Driven rod; 2011. Inner sleeve; 2012. Guide groove; 202. Connecting sleeve; 21. Drive component; 22. Connecting piece; 23. Buffer spring component; 24. Buffer ring; 25. Intermediate component; 251. Circular baffle; 26. Main cutting blade; 27. Sliding rod; 271. Guide protrusion; 272. Outer sleeve; 273. Adjusting spring component; 28. Secondary cutting blade; 29. ​​Telescopic caster; 30. Support rod; 31. First caster; 32. Adjusting arm; 40. Long strip baffle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 refer to Figures 1 to 8 , Figure 10 A lawnmower with adaptive terrain and shock absorption functions according to a preferred embodiment of the present invention will be described in detail below: The frame 10 serves as the load-bearing foundation for the entire lawnmower, providing a stable mounting reference for the push handle 11, the buffer spring 23, the buffer ring 24, and the support rod 30.

[0022] Four support legs are located at the bottom of the frame 10. Each support leg includes a support rod 30 and an adjusting arm 32, one end of which is rotatably connected to the support rod 30. The specific connection between the support rod 30 and the frame 10, and between the support rod 30 and the adjusting arm 32, directly adopts the existing rotating hinge method (a mature technology, so it will not be described in detail in the manual). This ensures that each support leg has independent swing capability, allowing it to make angle changes according to complex ground undulations without interfering with each other, thereby improving the lawnmower's terrain adaptability and shock absorption capabilities.

[0023] The mowing mechanism includes a power unit 20 located at the top of the frame 10, an intermediate component 25 fixedly connected to the power unit 20, and a main cutting blade 26 fixedly connected to the output end of the power unit 20. The intermediate component 25 is rotatably connected to the adjusting arms 32 of the four support legs, adaptively changing its angle according to the swing angle of the four support legs. The intermediate component 25 is a transmission transition structure. When the four support legs swing according to the undulation of the ground, it will drive the intermediate component 25 to make corresponding tilt adjustments. Since the power unit 20, driven rod 201, and main cutting blade 26 (specific components included in the mowing mechanism) are all directly or indirectly fixedly connected to the intermediate component 25, the main cutting blade 26 will also tilt in sync with the intermediate component 25, thereby ensuring that the main cutting blade 26 can make corresponding angle adjustments according to the terrain undulations, so as to ensure that the main cutting blade 26 is always close to the ground, thus ensuring a complete cut surface. Specifically: When the lawnmower travels to a localized area of ​​raised ground, the support rod 30 below that area is lifted by the raised ground, causing the entire support rod 30 to deflect upwards around its hinge point with the frame 10. At this time, the adjusting arm 32, which is rotatably connected to the lower end of the support rod 30, is driven by the support rod 30 to swing upwards synchronously, forming an upward tilt angle. The other end of the adjusting arm 32 is hinged to the corresponding position on the side of the intermediate component 25. The upward movement of the adjusting arm 32 pushes upwards on the same side of the intermediate component 25, causing the intermediate component 25 to tilt and deflect towards the side of the raised ground. Since the bottom of the power unit 20 is rigidly fixed to the intermediate component 25, the tilting of the intermediate component 25 directly causes the power unit 20 to change its posture synchronously. The driven rod 201 connected to the output end of the power unit 20 deflects along with the power unit 20, ultimately causing the main cutting blade 26, which is fixed at its end, to tilt synchronously, so that the cutting surface of the main cutting blade 26 is as parallel as possible to the raised lawn surface.

[0024] When the lawnmower travels to a depression in the ground, the corresponding support rod 30 loses ground support and sinks downward around the hinge point under the machine's own weight. The connected adjusting arm 32 swings downward along with the support rod 30, creating a downward tilt angle. The adjusting arm 32 pulls down the intermediate component 25 to the same side, causing the intermediate component 25 to sink and tilt towards the depression. The intermediate component 25 then drives the power unit 20 and the driven rod 201 to adjust their angles sequentially. At this time, the main cutting blade 26 tilts downward synchronously with the driven rod 201, pressing against the lower part of the lawn in the depression.

[0025] When the lawnmower travels to a raised or recessed area, the four support rods 30 and the adjusting arm 32 can independently sense the ground height and move accordingly, continuously and dynamically correcting the tilt angle of the intermediate component 25 and the entire rear lawnmower mechanism, ensuring that the main cutting blade 26 is in close contact with the lawn surface and ensuring the flatness of the cut grass.

[0026] The telescopic leg includes a sliding rod 27 that is sleeved on and slidably connected to the output end of the power unit 20, an adjusting spring 273 that is fixedly connected to both the output end of the power unit 20 and the sliding rod 27, a secondary cutting blade 28 and a telescopic caster 29 that are fixedly connected to the sliding rod 27. The length of the secondary cutting blade 28 is less than that of the main cutting blade 26, ensuring that the secondary cutting blade 28 can enter a small recessed area of ​​the ground to perform cutting work, and cooperate with the main cutting blade 26 to form a layered cutting effect. The telescopic leg is used to drive the telescopic caster 29 to always be in contact with the ground under the elastic force of the adjusting spring 273, thereby driving the secondary cutting blade 28 to maintain a constant distance from the ground.

[0027] The supporting legs also include: The first omnidirectional wheel 31, utilizing its flexible steering function, enables the lawnmower to move smoothly in complex terrain environments. It is fixedly connected to the end of the support rod 30 furthest from the frame 10, and during operation, it preferentially contacts the ground. Figures 1-5 As shown, the end of the support rod 30 connected to the first universal wheel 31 is the bottom end of the support rod 30, ensuring that the other end is at a higher height so that some parts of the mowing mechanism and the telescopic leg have a certain amount of space to accommodate them.

[0028] Also includes: The push handle 11 is rotatably connected to the end of the frame 10 away from the forward direction. The rotatable connection can be damped to ensure that the push handle 11 remains stationary at any angle when not subjected to external forces (except gravity), which facilitates storage and use.

[0029] The receiving hole 12, with a diameter larger than the output end of the power unit 20 (driven rod 201 and connecting sleeve 202), is opened on the frame 10, allowing the output end of the power unit 20 to pass through to the bottom of the frame 10, reserving space for the output end of the power unit 20 to move, and ensuring that the mowing mechanism has room to move during the deflection and vibration buffering process.

[0030] The output end of the power unit 20 is provided with: The driven rod 201, fixedly connected to the output end of the power unit 20, extends to the side of the intermediate component 25 away from the frame 10, and is fixedly connected to the main cutting blade 26 and slidably connected to the sliding rod 27, for rotation under the control of the power unit 20. The driving component 21 has multiple functions: bearing the torque transmission of the power unit 20, fixing the main cutting blade 26, and providing sliding guidance for the telescopic leg. It needs to be made of high-strength and easily machinable 45# steel and aluminum alloy, and such material selection and processing technology are mature technologies in the field of mechanical manufacturing, which can fully meet the requirements of long-term stable operation of the components.

[0031] The connecting sleeve 202 is fixedly connected at one end to the power unit 20 and at the other end to the intermediate component 25. It is sleeved on the outside of the driven rod 201 to protect the driven rod 201 and transmit the movement of the intermediate component 25. Specifically, the power unit 20 and the intermediate component 25 are fixedly connected together through the connecting sleeve 202, so that the intermediate component 25 moves synchronously with the four support legs, driving the power unit 20 to move as well. A certain gap needs to be provided between the connecting sleeve 202 and the driven rod 201 to prevent slight deformation caused by the connecting sleeve 202 itself bearing the weight of the power unit 20 and the bending force (generated by the synchronous movement of the power unit 20 and the intermediate component 25) from affecting the rotation of the driven rod 201.

[0032] Lawn mowing services also include: The drive unit 21 is rotatably connected to the push handle 11 and integrated into the push handle 11, so that the operator can control the working status of the power unit 20 while operating the lawnmower at the push handle 11, and use the push handle 11 to start and stop the power unit 20. It should be noted that the power unit 20, the drive unit 21, and their internal structure, starting and use methods all directly adopt existing mature technologies. The power unit 20 can be a mainstream electric motor, gasoline engine or diesel engine used in civilian lawnmowers. The drive unit 21 can be equipped with conventional control components such as a power switch, throttle switch, and mechanical start / stop lever. The related assembly, wiring and use methods are all well-known technologies, so this manual will not elaborate further.

[0033] As shown in the frame 10, the connecting piece 22 is a sheet-like structure that is fixedly connected to the bottom of the power unit 20, bearing and distributing the weight of the power unit 20, and is located between the power unit 20 and the frame 10.

[0034] As shown in the frame 10, several buffer springs 23 are evenly distributed between the connecting plate 22 and the frame 10, with one end fixedly connected to the buffer spring 23 and the other end fixedly connected to the frame 10, providing buffering and restoring force for the connecting plate 22. Specifically, when the lawnmower is stationary, the buffer springs 23 are compressed by the weight of the power unit 20 and the connecting plate 22, and at this time, the buffer springs 23 are all in a vertical state (as shown in the frame 10). When the lawnmower moves, the buffer springs 23 alleviate the vibration generated by the power unit 20 itself and its movement through their own deformation. Furthermore, as the power unit 20 moves synchronously with the intermediate part 25, the buffer springs 23 provide a restoring force for the entire mowing mechanism through the connecting plate 22, ensuring that it quickly returns to its initial position (as shown in the frame 10) to adapt to complex ground conditions. Furthermore, it can provide tension to the mowing mechanism when the movement distance is too large, preventing excessive changes in the mower's center of gravity and thus increasing the difficulty of operation. It should be noted that the buffer spring component 23 can be an existing mature component with elasticity, such as a spring or a spring column.

[0035] As shown in the frame 10, two buffer rings 24 are fixedly connected to the two edges of the receiving hole 12 on the frame 10, and their inner diameter is smaller than that of the receiving hole 12. They are used to prevent the mowing mechanism from directly contacting the frame 10 when it moves with the four support legs and to provide a buffering force. The circular baffle 251 is provided with an outlet for the discharge of grass. It is fixedly connected to the end of the intermediate part 25 away from the frame 10 and is located completely outside the main cutting blade 26. It is used to guide the grass after cutting to be discharged and to prevent the grass from splashing out everywhere.

[0036] The following is the complete working process and working principle of the above embodiments: During lawnmower operation, the four independent support legs are the first to sense changes in the ground. When passing over raised or recessed terrain, the corresponding support rod 30 will rise or fall around the hinge point with the undulation of the ground, and the adjusting arm 32 connected to it will simultaneously complete the upward or downward swinging motion. The multiple sets of adjusting arms 32 transmit the swing angle to the hinged intermediate member 25, causing the intermediate member 25 to tilt adaptively. Since the power unit 20, driven rod 201 and intermediate member 25 are rigidly connected, the entire lawnmower mechanism adjusts the tilt angle synchronously, keeping the main cutting blade 26 as parallel as possible to the lawn surface, effectively avoiding missed cuts and double cuts. The vibration generated during operation is buffered and unloaded in multiple stages through the connecting plate 22, several evenly arranged buffer elastic members 23 and the buffer ring 24 on the edge of the receiving hole 12. The buffer elastic members 23 can also provide a restoring force after the lawnmower mechanism deflects, allowing the lawnmower mechanism to quickly return to its initial posture.

[0037] Example 2 refer to Figures 1 to 4, Figure 6 , Figure 8 , Figure 9 , Figure 11 ,like Figure 6 and Figure 8 As shown, 201 is equipped with: The inner sleeve 2011 is fixedly connected to the end of the driven rod 201 away from the power device 20, and its opening faces downward; Several guide grooves 2012 are evenly arranged and are all opened at the end of the driven rod 201 away from the power device 20. They are used to guide the sliding rod 27 in the driven rod 201, ensuring that the movement trajectory of the entire telescopic leg is always along the axial direction of the driven rod 201. The cooperation between the guide grooves 2012 and the guide protrusions 271 also prevents the sliding rod 27 from spinning freely or losing power.

[0038] like Figure 9 As shown, the telescopic leg also includes: A number of guide protrusions 271, the same number as the number of guide grooves 2012, correspond one-to-one with the guide grooves 2012, and are all set on the side wall of the sliding rod 27. They are used to enter the corresponding guide grooves 2012 to transmit the torque of the driven rod 201, ensuring that the rotation speed of the secondary cutting blade 28 and the main cutting blade 26 are completely synchronized, and avoiding uneven lawn after cutting caused by the asynchronous cutting of the main cutting blade 26 and the secondary cutting blade 28.

[0039] The outer sleeve 272 is fixedly connected to the end of the sliding rod 27 away from the driven rod 201, and its opening faces upward to wrap the inner sleeve 2011 inside itself. It is used to cooperate with the inner sleeve 2011 to isolate the sliding rod 27 and several guide protrusions 271 from the outside world, and to prevent weeds, soil and moisture in the outdoor working environment from entering the gap between the driven rod 201 and the sliding rod 27, thereby reducing the probability of rust and jamming, and extending the service life of the mowing mechanism and the telescopic leg.

[0040] The secondary cutting blade 28 is positioned between the outer sleeve 272 and the telescopic caster 29, so that the secondary cutting blade 28 is as close to the ground as possible, thereby better cooperating with the telescopic caster 29 to perform cutting work at a constant height.

[0041] Also includes: A long baffle 40 is fixedly connected to the bottom of the end of the frame 10 near the push handle 11. It is located between the push handle 11, the cutting structure, and the telescopic leg to prevent the worker operating the lawnmower through the push handle 11 and the drive unit 21 from being hit by the grass that is thrown out of their thigh. It extends downward to contact the ground to block the grass that is thrown out after cutting.

[0042] The following is the complete working process and working principle of the above embodiments: During operation, the power unit 20 drives the driven rod 201 to rotate continuously. The guide groove 2012 at the end of the driven rod engages with the guide protrusion 271 on the side wall of the sliding rod 27, simultaneously transmitting torque while achieving axial sliding guidance, ensuring that the secondary cutting blade 28 and the main cutting blade 26 rotate at the same speed. During operation, the adjusting spring 273 always applies a downward preload to the sliding rod 27, pushing the telescopic caster 29 to press against the ground. When the ground bulges or depressions, the sliding rod 27 slides up and down along the axis of the driven rod 201 to adaptively compensate for the height, ensuring that the secondary cutting blade 28, which is fixed in position relative to the telescopic caster 29, always maintains a constant height above the ground. This not only works with the main cutting blade 26 to create a layered cutting effect, but also ensures that the entire lawn is cut at a uniform height, guaranteeing a neat and beautiful lawn after cutting. At the same time, it can accurately control the cutting depth, avoiding damage to the grass roots. Even on slightly undulating ground, it can effectively reduce missed cuts and repeated cutting, thereby significantly improving the mowing quality.

[0043] Example 3 refer to Figures 1 to 11 A method for using a lawnmower with adaptive terrain and shock absorption features includes the following steps: a. Move the lawnmower to the area of ​​lawn to be mowed. At this time, if... Figure 3 As shown, the four first casters 31 and the telescopic casters 29 are in direct contact with the ground. The operation drive unit 21 starts the power unit 20 (which is an existing mature technology and will not be described in detail here). The power unit 20 works, driving the driven rod 201 and the sliding rod 27 to rotate synchronously, driving the main cutting blade 26 and the secondary cutting blade 28 to rotate synchronously as well. b. Hold the push handle 11 and push the lawnmower forward. During the movement, the four support legs swing with the undulation of the ground. The adjusting arm 32 swings according to the swing of the support legs, so as to drive the intermediate part 25 to adaptively adjust according to the number and angle of the swinging support legs, thereby adjusting the angle of the entire mowing mechanism. This makes the main cutting blade 26 in the mowing mechanism as parallel as possible to the undulating ground, so that the lawnmower will not miss any mowing even on uneven ground. The angle of the lawnmower does not need to be manually adjusted throughout the process.

[0044] c. The adjusting spring element 273 constantly applies a downward force to the sliding rod 27, driving the sliding rod 27 and the telescopic caster 29 to always keep in contact with the ground, maintaining a constant distance between the secondary cutting blade 28 and the ground. Even if there are slight depressions or bumps on the ground, the telescopic caster 29 will move up and down with the terrain, and the adjusting spring element 273 will extend and retract accordingly to compensate, always locking the height of the secondary cutting blade 28 off the ground, ensuring that the mowing height of the entire lawn is uniform.

[0045] d. After trimming, operate the drive unit 21 to turn off the power unit 20. After the main cutting blade 26 and the secondary cutting blade 28 have completely stopped rotating, move the lawnmower to the designated position, clean the circular baffle 251, the long baffle 40 and the main cutting blade 26 and the secondary cutting blade 28 to prevent the grass from rotting, sticking and clogging the parts, complete the work, and prepare for the next operation.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mower having an adaptive terrain and shock absorption function, characterized by, include: Rack (10); Four support legs are all located at the bottom of the frame (10). Each support leg includes a support rod (30) and an adjusting arm (32) that is rotatably connected to the support rod (30) at one end. The mowing mechanism includes a power unit (20) located at the top of the frame (10), an intermediate part (25) fixedly connected to the power unit (20), and a main cutting blade (26) fixedly connected to the output end of the power unit (20). The intermediate part (25) is rotatably connected to the adjusting arm (32) of the four support legs and adaptively changes its own angle according to the swing angle of the four support legs. The telescopic leg includes a sliding rod (27) sleeved with and slidably connected to the output end of the power device (20), an adjusting spring (273) fixedly connected to both the output end of the power device (20) and the sliding rod (27), a secondary cutting blade (28) fixedly connected to the sliding rod (27), and a telescopic caster (29). The length of the secondary cutting blade (28) is less than that of the main cutting blade (26). The telescopic leg is used to drive the telescopic caster (29) to always be in contact with the ground under the elastic force of the adjusting spring (273), thereby driving the secondary cutting blade (28) to maintain a constant distance from the ground.

2. A lawnmower with adaptive terrain and shock absorption functions according to claim 1, characterized in that, The support leg also includes: The first universal wheel (31) is fixedly connected to the end of the support rod (30) away from the frame (10), and the end of the support rod (30) connected to the first universal wheel (31) is the bottom end of the support rod (30).

3. A lawnmower with adaptive terrain and shock absorption functions according to claim 1, characterized in that, Also includes: The push handle (11) is rotatably connected to the end of the frame (10) away from the direction of travel; A receiving hole (12) is provided on the frame (10) for the output end of the power unit (20) to pass through to the bottom of the frame (10).

4. A lawnmower with adaptive terrain and shock absorption functions according to claim 1, characterized in that, The output end of the power unit (20) is provided with: The driven rod (201) is fixedly connected to the output end of the power device (20), extends to the side of the intermediate part (25) away from the frame (10), and is fixedly connected to the main cutting blade (26) and slidably connected to the sliding rod (27) for rotating under the control of the power device (20); The connecting sleeve (202) is fixedly connected at one end to the power device (20) and at the other end to the intermediate part (25), and is sleeved on the outside of the driven rod (201) to protect the driven rod (201) and transmit the movement state of the intermediate part (25).

5. A lawnmower with adaptive terrain and shock absorption functions according to claim 3, characterized in that, The lawn mowing mechanism also includes: The drive unit (21) is rotatably connected to the push handle (11) and is used to control the working state of the power unit (20); The connecting piece (22) is a sheet-like structure, fixedly connected to the bottom of the power unit (20), and located between the power unit (20) and the frame (10); Several buffer elastic elements (23) are evenly arranged between the connecting piece (22) and the frame (10), with one end fixedly connected to the buffer elastic element (23) and the other end fixedly connected to the frame (10), for providing buffering and restoring force for the connecting piece (22); Two buffer rings (24) are fixedly connected to the two edges of the receiving hole (12) on the frame (10), and their inner diameter is smaller than that of the receiving hole (12). They are used to prevent the mowing mechanism from directly contacting the frame (10) when it moves with the four support legs and to provide a buffering force. A circular baffle (251) is fixedly connected to one end of the intermediate part (25) away from the frame (10) and is located completely outside the main cutting blade (26) to guide the cut grass out and prevent the grass from splashing everywhere.

6. A lawnmower with adaptive terrain and shock absorption functions according to claim 4, characterized in that, The driven rod (201) is provided with: The inner sleeve (2011) is fixedly connected to the end of the driven rod (201) away from the power device (20), and its opening faces downward; Several guide grooves (2012) are provided at one end of the driven rod (201) away from the power device (20) to provide guidance for the sliding rod (27) to slide within the driven rod (201).

7. A lawnmower with adaptive terrain and shock absorption functions according to claim 6, characterized in that, The telescopic leg also includes: A number of guide protrusions (271), the same number as the number of guide grooves (2012), are provided on the side wall of the sliding rod (27) for transmitting the torque of the driven rod (201) into the corresponding guide groove (2012); The outer sleeve (272) is fixedly connected to the end of the sliding rod (27) away from the driven rod (201), and its opening faces upward to wrap the inner sleeve (2011) inside itself. It is used to cooperate with the inner sleeve (2011) to isolate the sliding rod (27) and several guide protrusions (271) from the outside.

8. A lawnmower with adaptive terrain and shock absorption functions according to claim 7, characterized in that: The secondary cutting blade (28) is disposed between the outer sleeve (272) and the telescopic caster (29).

9. A lawnmower with adaptive terrain and shock absorption functions according to claim 3, characterized in that, Also includes: A long baffle (40) is fixedly connected to the bottom of one end of the frame (10) near the push handle (11) and extends downward to contact the ground, used to block the grass that is thrown out after cutting.

10. A method of using a lawnmower with adaptive terrain and shock absorption functions, employing the lawnmower with adaptive terrain and shock absorption functions as described in claims 1-9, characterized in that... Includes the following steps: a. Move the lawnmower to the lawn area to be mowed, operate the drive unit (21) to start the power unit (20), the power unit (20) works, driving the driven rod (201) and the sliding rod (27) to rotate synchronously, driving the main cutting blade (26) and the secondary cutting blade (28) to rotate synchronously as well; b. Hold the push handle (11) and push the lawnmower forward. During the movement, the four support legs swing with the undulation of the ground. The adjusting arm (32) swings according to the swing of the support legs, so as to drive the intermediate part (25) to adaptively adjust according to the number and angle of the swinging support legs, so as to adjust the angle of the entire lawnmower mechanism. c. The adjusting elastic element (273) constantly applies a downward force to the sliding rod (27), driving the sliding rod (27) and the telescopic universal wheel (29) to always be in contact with the ground, maintaining a constant distance between the secondary cutting blade (28) and the ground; d. After trimming, operate the drive unit (21) to turn off the power unit (20). After the main cutting blade (26) and the secondary cutting blade (28) have completely stopped rotating, move the lawnmower to the designated position, clean the residual grass on the circular baffle (251), the long baffle (40), the main cutting blade (26), and the secondary cutting blade (28), and complete the operation.

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