Mowing machine with adjustable cutter head and use method of mowing machine

Abstract

The invention relates to the technical field of agricultural machinery, and discloses a mower with an adjustable cutter head and a using method thereof.The mower comprises a grab handle, a weeding machine is fixedly connected to the surface of the grab handle, a gasoline engine is fixedly connected to the left side of the weeding machine, a sliding cavity is fixedly connected to the left side of the weeding machine, and a pushing handle is slidably connected to the inner wall of the sliding cavity through a sliding block; and the cutting assembly comprises a mounting block fixedly connected with the surface of the wheel disc, the top of the mounting block is fixedly connected with a telescopic pad, and the top of the telescopic pad is fixedly connected with a cutting piece. By arranging the cutting assembly, the end of a cutting blade collides with the surface of weeds and extrudes a telescopic pad, so that the telescopic pad telescopes towards the inner side and generates negative pressure suction force to be transmitted into the cutting blade, and finally grass seeds generated when the weeds are cut are absorbed into the cutting blade through absorption holes in the cutting blade. And the weed cutting efficiency can be improved, and meanwhile, a large number of grass seeds can be prevented from splashing outwards to affect operators.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a lawn mower with an adjustable cutter disc and a use method thereof. Background Art

[0002] A lawn mower with an adjustable blade is a very practical garden tool. The adjustable blade design of this lawn mower brings many conveniences to users. On the one hand, it can flexibly adjust the height of the blade according to different grass conditions and mowing needs. When facing uneven grass, the blade can be raised to avoid hitting obstacles on the ground, or lowered when it needs to be mowed shorter, and the length of the mowing can be precisely controlled.

[0003] Patent application with application number CN201510020217.3 discloses a hand-push adjustable lawn mower and its operation method, including a shell, in which a control component, a blade height adjustment component, a motor component, a blade assembly and an armrest folding component are arranged, the control component controls the motor component, and the motor component is arranged in the blade height adjustment component.

[0004] However, the patent also has the following shortcomings, that is, when the lawn mower is used to clean the weeds, the grass seeds inside the weeds will splash outward when the weeds are cut and cleaned, thereby affecting the operator, and some weeds with large rhizomes contain more grass seeds, which will splash more grass seeds when they are cut. How to improve the weed cleaning efficiency is a major problem at present. In view of this situation, a lawn mower with an adjustable blade and a method of using the same are specially proposed. Summary of the invention

[0005] The object of the present invention is to provide a lawn mower with an adjustable blade disc and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a lawn mower with an adjustable blade disc, comprising a handle, a lawn mower is fixedly connected to the surface of the handle, a gasoline engine is fixedly connected to the left side of the lawn mower, a sliding cavity is fixedly connected to the left side of the lawn mower, a push handle is slidably connected to the inner wall of the sliding cavity through a slider, a push mechanism is arranged on the top of the push handle, and further comprising: The connecting mechanism comprises a connecting shaft rotatably connected to the top of the inner wall of the lawn mower, a wheel disc is fixedly connected to the bottom of the connecting shaft, and an impact mechanism is arranged on the inner wall of the wheel disc to discharge air pressure into the interior of the wheel disc through three feelers of the connecting shaft; The cutting assembly includes a mounting block fixedly connected to the surface of the wheel disc, a telescopic pad fixedly connected to the top of the mounting block, a cutting blade fixedly connected to the top of the telescopic pad, a telescopic cavity fixedly connected to the left side of the mounting block, a feed pipe fixedly connected to the surface of the telescopic cavity, an end of the feed pipe away from the telescopic cavity fixedly connected to the surface of the wheel disc, a telescopic film fixedly connected to the inner wall of the telescopic cavity, the top of the telescopic film fixedly connected to the bottom of the cutting blade, a friction block fixedly connected to the surface of the cutting blade, and when the cutting blade rotates, the friction block on its surface will produce extrusion contact with the surface of the air cushion film.

[0007] According to the above technical solution, the pushing mechanism includes a mounting frame, the mounting frame is fixedly connected to the inner wall of the lawn mower, the inner wall of the mounting frame is provided with a telescopic component, the surface of the mounting frame is fixedly connected to a connecting block, the top of the connecting block is fixedly connected to an air intake pipe, the end of the air intake pipe away from the connecting block is fixedly connected to the top of the inner wall of the lawn mower, the two sides of the connecting block are fixedly connected with expansion plates, the upper and lower sides of the expansion plate are provided with expansion components, and the air pressure flows from the inside of the connecting block into the expansion plate, and flows from the telescopic plate into the expansion membrane.

[0008] The telescopic assembly includes a pulling arm, which is fixedly connected to the top of the pushing handle, an impact column is fixedly connected to the right side of the inner wall of the mounting frame, a movable rod is fixedly connected to the surface of the impact column, an end of the movable rod away from the impact column is fixedly connected to the left side of the inner wall of the mounting frame, the pulling arm is slidably connected to the surface of the movable rod, a stamping pad is fixedly connected to the surface of the movable rod, compression rods are fixedly connected on both sides of the inner wall of the stamping pad, and the stamping pad slides on the surface of the movable rod when pushed inward by the pulling arm.

[0009] According to the above technical solution, the compression rod is made of a retractable soft material. When the compression rod is retracted inward, the internal space of the stamping pad is compressed. When the compression rod is retracted inward, the internal space of the stamping pad is compressed.

[0010] According to the above technical solution, the expansion component includes an expansion membrane, which is fixedly connected to one end of the extension plate, a buffer pad is fixedly connected to the bottom of the inner wall of the expansion membrane, an impact frame is fixedly connected to the surface of the buffer pad, and a spring rod is slidably connected to the inner wall of the buffer pad. Both sides of the impact frame are fixedly connected to the surface of the expansion membrane, and the impact frame on the surface of the expansion membrane will expand and contract toward the inside of the buffer pad due to the push of grass seeds.

[0011] According to the above technical solution, one end of the impact frame is made of a retractable membrane material. By generating pressure on one end of the impact frame, the internal space of the buffer pad will be compressed. When the interior of the buffer pad is compressed, air pressure will be generated to push the elastic rod inside it.

[0012] According to the above technical solution, the impact mechanism includes an installation box, which is fixedly connected to the inner wall of the wheel disc, and the inner wall of the installation box is slidably connected to a push rod, one end of the push rod is fixedly connected to a piston ring, the end of the piston ring away from the push rod is fixedly connected to a contact block, the top of the contact block is fixedly connected to an air cushion film, and the right side of the installation box is fixedly connected to a clamping frame, and the push rod sliding inward will drive one end of the stretching strip to be pulled outward.

[0013] The shoveling assembly includes a rotating arm, which is rotatably connected to the inner wall of the clamping frame on both sides via a rotating shaft, the rotating arm is fixedly connected to a cutting block at one end away from the clamping frame, a stretching bar is fixedly connected to the surface of the cutting block, the stretching bar is fixedly connected to the inner wall of the push rod at one end away from the cutting block, the inner wall of the cutting block is fixedly connected to a rotating cavity, the inner wall of the rotating cavity is rotatably connected to pushing arms at both sides, and the stretching bar pulled outward drives the rotating arm to rotate inward on the inner wall of the clamping frame.

[0014] According to the above technical solution, the piston ring has the function of bending and stretching. When the piston ring is subjected to external pressure, it will bend to one side and drive the stretching strip to one side, and the contact block will drive the piston ring to stretch inward.

[0015] A method for using a lawn mower with an adjustable blade disc comprises the following steps: S1: Hold the handle to lift the lawn mower, start the gasoline engine switch to output power to drive the connecting shaft to rotate, drive the wheel to rotate, and cut and clean the weeds through the cutting blades on the surface of the wheel.

[0016] S2: By pushing the pulling arm inward, it will slide on the surface of the movable rod. When the pulling arm slides to the surface of the stamping pad, it will squeeze it, so that air pressure is generated inside the stamping pad and flows into the connecting block. After the air pressure flows into the expansion membrane, it will drive it to expand outward, expand outward through the expansion membrane and eject the flying grass seeds outward.

[0017] S3: The three tentacles of the connecting shaft discharge the air pressure into the inside of the wheel disc, and discharge the air pressure into the telescopic cavity through the feed pipe. The air pressure flowing into the telescopic cavity drives the telescopic membrane to telescope outward and pushes the cutting blade. The cutting blade that telescopes outward can cut some weeds with thicker roots.

[0018] S4: When the cutting disc rotates, the friction block on its surface will produce extrusion contact with the surface of the air cushion film, so that one end of the push rod slides downward on the inner wall of the installation box. The push rod slides inward, which drives one end of the stretching strip to be pulled outward. When the cutting block moves inward to the surface of the weeds, the cutting block hits the rhizomes on the surface of the weeds that have not been completely broken after cutting.

[0019] Compared with the prior art, the present invention provides a lawn mower with an adjustable blade disc and a method for using the same, which has the following beneficial effects: 1. The present invention is provided with a pushing mechanism. When the interior of the buffer pad is compressed, air pressure is generated to push the spring rod inside the buffer pad, so that the spring rod is extended outward and one end of the spring rod pushes the surface of the impact frame. The expansion membrane is driven to extend outward by the impact frame that extends outward and the flying grass seeds are ejected outward. By providing this mechanism, the grass seeds generated when the weeder cuts weeds can be rebounded, so as to avoid the grass seeds splashing and affecting the operator's work.

[0020] 2. The present invention is provided with a cutting assembly, and the end of the cutting blade collides with the surface of the weeds and squeezes the telescopic pad, so that the telescopic pad expands and contracts inwards and generates negative pressure suction and transmits it to the inside of the cutting blade. Finally, the grass seeds generated when cutting the weeds are absorbed into the inside through the absorption holes inside the cutting blade. By providing this mechanism, the weed cutting efficiency can be improved while preventing a large number of grass seeds from splashing outwards and affecting the operator.

[0021] 3. The present invention is provided with an impact mechanism, and when the rotating arm rotates inward, it drives the cutting block to move to one side. When the cutting block moves inward to the surface of the weeds, the rhizomes on the surface of the weeds that have not been completely broken after cutting are hit by the cutting block, so that the rhizomes inside the weeds that have not been completely broken are broken. By providing this mechanism, the weed removal efficiency can be improved, thereby preventing excess grass seeds from splashing outward.

[0022] 4. The present invention is provided with a shoveling assembly, which pushes the pushing arm through air pressure, so that one end of the pushing arm rotates outward inside the rotating chamber, and the tiny rhizomes inside the weeds are cut off by the pushing arm that rotates outward. By providing this assembly, not only the weed clearing time can be reduced, but also the weed clearing range can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional diagram of the pushing mechanism of the present invention; Figure 3 is a stereogram of the telescopic assembly of the present invention; Figure 4 is a schematic cross-sectional view of the expansion assembly of the present invention; Figure 5 is a three-dimensional diagram of the connection mechanism of the present invention; Figure 6 is a perspective view of the cutting assembly of the present invention; Figure 7 is a three-dimensional diagram of the impact mechanism of the present invention; Figure 8 It is a stereoscopic view of the shovel assembly of the present invention.

[0024] In the figure: 1, handle; 2, lawn mower; 3, gasoline engine; 4, sliding chamber; 5, push handle; 6, push mechanism; 601, mounting frame; 602, connecting block; 603, air intake pipe; 604, extension plate; 605, expansion assembly; 6051, expansion membrane; 6052, buffer pad; 6053, impact frame; 6054, ejector rod; 606, telescopic assembly; 6061, pulling arm; 6062, impact column; 6063, movable rod; 6064, compression rod; 6065, stamping pad; 7, connecting mechanism; 701, connecting shaft; 702, wheel ;703, cutting assembly;7031, mounting block;7032, telescopic pad;7033, cutting blade;7034, friction block;7035, feed pipe;7036, telescopic chamber;7037, telescopic membrane;8, impact mechanism;801, mounting box;802, clamping frame;803, push rod;804, piston ring;805, contact block;806, air cushion membrane;807, shoveling assembly;8071, rotating arm;8072, cutting block;8073, stretching strip;8074, compression pad;8075, push arm;8076, rotating chamber. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] For example, see Figure 1-Figure 4 The present invention provides a technical solution: a lawn mower with an adjustable blade, comprising a handle 1, a lawn mower 2 is fixedly connected to the surface of the handle 1, a gasoline engine 3 is fixedly connected to the left side of the lawn mower 2, the operator lifts the lawn mower 2 by holding the handle 1, and by starting the switch of the gasoline engine 3, the chemical energy is converted into mechanical energy by burning gasoline in the cylinder. The reciprocating motion of the piston drives the crankshaft to rotate, thereby outputting power to drive the connecting shaft 701 to rotate, thereby driving the wheel 702 to rotate, and the weeds are cut and cleaned by the cutting blade 7033 on the surface of the wheel 702, the left side of the lawn mower 2 is fixedly connected to the sliding chamber 4, the inner wall of the sliding chamber 4 is slidably connected to the push handle 5 through the slider, and the top of the push handle 5 is provided with a push mechanism 6, and also includes: The pushing mechanism 6 includes a mounting frame 601, which is fixedly connected to the inner wall of the weeder 2. A telescopic component 606 is provided on the inner wall of the mounting frame 601. A connecting block 602 is fixedly connected to the surface of the mounting frame 601. An air inlet pipe 603 is fixedly connected to the top of the connecting block 602. One end of the air inlet pipe 603 away from the connecting block 602 is fixedly connected to the top of the inner wall of the weeder 2. Extension plates 604 are fixedly connected to both sides of the connecting block 602. Expansion components 605 are provided on the upper and lower sides of the extension plate 604. One end of the air inlet pipe 603 is connected to the internal air cavity of the weeder 2. When one end of the air inlet pipe 603 discharges the air pressure into the internal air cavity of the weeder 2, it will be discharged into the interior of the connecting shaft 701 through the air cavity.

[0027] The telescopic assembly 606 includes a pulling arm 6061, which is fixedly connected to the top of the pushing handle 5. An impact column 6062 is fixedly connected to the right side of the inner wall of the mounting frame 601. A movable rod 6063 is fixedly connected to the surface of the impact column 6062. The end of the movable rod 6063 away from the impact column 6062 is fixedly connected to the left side of the inner wall of the mounting frame 601. The pulling arm 6061 is slidably connected to the surface of the movable rod 6063. A stamping pad 6065 is fixedly connected to the surface of the movable rod 6063. Compression rods 6064 are fixedly connected to both sides of the inner wall of the stamping pad 6065. The pulling arm 6061 is pushed inward by holding the pushing handle 5. By pulling the arm 6061 inward, it will slide on the surface of the movable rod 6063. When the pulling arm 6061 slides to the surface of the stamping pad 6065, it will squeeze it, thereby expanding and retracting the compression rod 6064 inside the stamping pad 6065 inward. When the compression rod 6064 expands and retracts inward, the internal space of the stamping pad 6065 is compressed, thereby generating air pressure inside the stamping pad 6065 and flowing into the connecting block 602. The air pressure flows from the inside of the connecting block 602 into the extension plate 604, and then flows from the extension plate 604 into the expansion membrane 6051. After flowing into the expansion membrane 6051, the air pressure will drive it to expand and retract outward.

[0028] The compression rod 6064 is made of a retractable soft material. When the compression rod 6064 retracts inward, the internal space of the stamping pad 6065 will be compressed. When the two ends of the compression rod 6064 are subjected to pressure, the internal space of the stamping pad 6065 will be compressed. The interior of the stamping pad 6065 is filled with air pressure, thereby driving the air pressure inside the stamping pad 6065 to spray outward into the connecting block 602.

[0029] The expansion component 605 includes an expansion membrane 6051, which is fixedly connected to one end of the extension plate 604, a buffer pad 6052 is fixedly connected to the bottom of the inner wall of the expansion membrane 6051, an impact frame 6053 is fixedly connected to the surface of the buffer pad 6052, and a spring rod 6054 is slidably connected to the inner wall of the buffer pad 6052. Both sides of the impact frame 6053 are fixedly connected to the surface of the expansion membrane 6051. The more the pulling arm 6061 is pushed inward, the stronger the compression force on the compression rod 6064 is, so that the internal space of the stamping pad 6065 is subjected to a stronger compression force, thereby generating more air pressure, thereby driving the expansion membrane 6051 to expand and contract outward. When the weeder 2 cleans weeds, grass seeds will be splashed outward, and the splashed grass seeds will fly to the surface of the expansion membrane 6051.

[0030] One end of the impact frame 6053 is made of a retractable membrane material. By generating pressure on one end of the impact frame 6053, the internal space of the buffer pad 6052 will be compressed. After the interior of the impact frame 6053 is impacted by the outside, it will expand and contract inward, thereby discharging the compressed gas inside itself into the buffer pad 6052, and the compressed gas ejected outward will push the ejection rod 6054.

[0031] The impact frame 6053 on the surface of the expansion membrane 6051 will expand and contract toward the inside of the buffer pad 6052 due to the push of the grass seeds. When the inside of the buffer pad 6052 is compressed, air pressure will be generated to push the elastic rod 6054 inside it, so that the elastic rod 6054 expands and contracts outwards and one end of it pushes the surface of the impact frame 6053. The expansion membrane 6051 is driven to expand and contract outwards by the impact frame 6053 that expands and contracts outwards and the flying grass seeds are ejected outwards. The grass seeds generated when the lawn mower 2 cuts weeds can be rebounded to avoid the flying of grass seeds and the impact on the operator's work.

[0032] Example 2: Based on Example 1, continue to refer to Figure 5-Figure 6 The connecting mechanism 7 includes a connecting shaft 701 rotatably connected to the top of the inner wall of the weeder 2, a wheel disc 702 is fixedly connected to the bottom of the connecting shaft 701, and an impact mechanism 8 is provided on the inner wall of the wheel disc 702. When the wheel disc 702 rotates, it drives the cutting blade 7033 on its surface to cut the weeds, and by stretching the pulling arm 6061 inward, the surface of the stamping pad 6065 is compressed, so that the air pressure generated inside the stamping pad 6065 flows into the internal cavity of the connecting shaft 701 through the air inlet pipe 603, and the air pressure is discharged into the interior of the wheel disc 702 through the three tentacles of the connecting shaft 701.

[0033] The cutting assembly 703 includes a mounting block 7031 fixedly connected to the surface of the wheel disc 702, a telescopic pad 7032 fixedly connected to the top of the mounting block 7031, a negative pressure cavity is provided inside the telescopic pad 7032, and when subjected to external pressure, the internal negative pressure cavity is squeezed, thereby causing a pressure difference between its internal space and the outside, thereby generating a negative pressure suction force that is transmitted to the internal absorption hole of the cutting blade 7033, the top of the telescopic pad 7032 is fixedly connected to the cutting blade 7033, the left side of the mounting block 7031 is fixedly connected to the telescopic cavity 7036, the surface of the telescopic cavity 7036 is fixedly connected to the feed pipe 7035, and the feed pipe 7035 is away from the telescopic cavity 70 One end of the expansion chamber 7036 is fixedly connected to the surface of the wheel disc 702, a expansion film 7037 is fixedly connected to the inner wall of the expansion chamber 7036, the top of the expansion film 7037 is fixedly connected to the bottom of the cutting blade 7033, and a friction block 7034 is fixedly connected to the surface of the cutting blade 7033. The air pressure is discharged into the expansion chamber 7036 through the feed pipe 7035. The air pressure flows into the expansion chamber 7036 to drive the expansion film 7037 to expand and contract outward and push the cutting blade 7033, so that the cutting blade 7033 expands outward to a certain length. The cutting blade 7033 that expands outward can cut some weeds with thicker roots and stems, thereby improving the cutting efficiency.

[0034] When the end of the cutting blade 7033 collides with the surface of the weeds, it squeezes the telescopic pad 7032, causing the telescopic pad 7032 to expand and contract inward while generating negative pressure suction and transmitting it to the inside of the cutting blade 7033. Finally, the grass seeds generated when cutting the weeds are absorbed into the inside through the absorption holes inside the cutting blade 7033, which can improve the weed cutting efficiency while preventing a large amount of grass seeds from splashing outward and affecting the operator.

[0035] Example 3: Based on Example 2, continue to refer to Figure 7-Figure 8The impact mechanism 8 includes a mounting box 801, which is fixedly connected to the inner wall of the wheel disc 702, and a push rod 803 is slidably connected to the inner wall of the mounting box 801. One end of the push rod 803 is fixedly connected to a piston ring 804, and the end of the piston ring 804 away from the push rod 803 is fixedly connected to a contact block 805, and the top of the contact block 805 is fixedly connected to an air cushion film 806. The right side of the mounting box 801 is fixedly connected to a clamping frame 802. When the cutting blade 7033 rotates with the wheel disc 702, since the wheel disc 702 is made of a lawn mower, 2 is composed of a wheel axle fixed on the inner wall and a wheel disc 702 rotatably connected at the top, and the impact mechanism 8 is arranged on the surface of the wheel axle. When the cutting blade 7033 rotates, the friction block 7034 on its surface will produce extrusion contact with the surface of the air cushion film 806, thereby causing the contact block 805 at the bottom of the air cushion film 806 to be subjected to pressure, and the contact block 805 will drive the piston ring 804 to expand and contract inwardly, and the inwardly expanding piston ring 804 will push one end of the propulsion rod 803, so that one end of the propulsion rod 803 slides downward on the inner wall of the installation box 801.

[0036] The shovel assembly 807 includes a rotating arm 8071, which is rotatably connected to the inner wall of the clamping frame 802 via a rotating shaft. The end of the rotating arm 8071 away from the clamping frame 802 is fixedly connected to a cutting block 8072, and a stretching bar 8073 is fixedly connected to the surface of the cutting block 8072. The end of the stretching bar 8073 away from the cutting block 8072 is fixedly connected to the inner wall of the push rod 803, and the inner wall of the cutting block 8072 is fixedly connected to a rotating cavity 8076. The inner wall of the rotating cavity 8076 is rotatably connected to the push arm 8076. 5. When the push rod 803 slides inward, one end of the stretching bar 8073 is pulled outward, and the stretching bar 8073 pulled outward drives the rotating arm 8071 to rotate inward on the inner wall of the clamping frame 802. When the rotating arm 8071 rotates inward, it drives the cutting block 8072 to move to one side. When the cutting block 8072 moves inward to the surface of the weeds, the cutting block 8072 will hit the rhizomes on the surface of the weeds that have not been completely broken after cutting, so that the rhizomes inside the weeds that have not been completely broken will be cut off.

[0037] The piston ring 804 has the function of bending and stretching. When the piston ring 804 is subjected to external pressure, it will bend to one side and drive the stretching bar 8073 to be pulled to one side.

[0038] The surface of the weeds will come into contact with the compression pad 8074, and one end of the compression pad 8074 will be extended and retracted, thereby causing the compression pad 8074 to extend and retract toward the inner wall of the cutting block 8072. When the compression pad 8074 extends and retracts toward the inner wall of the cutting block 8072, air pressure will be generated and sprayed into the rotating chamber 8076. The air pressure pushes the pushing arm 8075, causing one end of the pushing arm 8075 to rotate outward inside the rotating chamber 8076. The tiny rhizomes inside the weeds are cut off by the outwardly rotating pushing arm 8075, which not only reduces the weed removal time but also increases the weed removal range.

[0039] A method for using a lawn mower with an adjustable blade disc comprises the following steps: S1: Hold the handle 1 to lift the weeder 2, and start the switch of the gasoline engine 3 to output power to drive the connecting shaft 701 to rotate, and drive the wheel 702 to rotate, and the cutting blade 7033 on the surface of the wheel 702 cuts and cleans the weeds.

[0040] S2: By pushing the pulling arm 6061 inward, it will slide on the surface of the movable rod 6063. When the pulling arm 6061 slides to the surface of the stamping pad 6065, it will squeeze it, so that air pressure is generated inside the stamping pad 6065 and flows into the connecting block 602. After flowing into the expansion membrane 6051, the air pressure will drive it to expand and retract outward, and the expansion membrane 6051 will retract and retract outward and eject the flying grass seeds outward.

[0041] S3: The three tentacles of the connecting shaft 701 discharge the air pressure into the inside of the wheel disc 702, and discharge the air pressure into the telescopic chamber 7036 through the feed pipe 7035. The air pressure flowing into the telescopic chamber 7036 drives the telescopic membrane 7037 to telescope outward and pushes the cutting blade 7033. The cutting blade 7033 that telescopes outward can cut some weeds with thicker roots.

[0042] S4: When the cutting blade 7033 rotates, the friction block 7034 on its surface will come into compression contact with the surface of the air cushion film 806, so that one end of the pushing rod 803 slides downward on the inner wall of the installation box 801. The pushing rod 803 slides inward, which drives one end of the stretching bar 8073 to be pulled outward. When the cutting block 8072 moves inward to the surface of the weeds, the cutting block 8072 will hit the rhizomes on the surface of the cut weeds that have not been completely broken.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lawn mower with an adjustable blade, comprising a handle (1), a lawn mower (2) fixedly connected to the surface of the handle (1), a gasoline engine (3) fixedly connected to the left side of the lawn mower (2), a sliding chamber (4) fixedly connected to the left side of the lawn mower (2), a push handle (5) slidably connected to the inner wall of the sliding chamber (4) via a slider, a push mechanism (6) being arranged on the top of the push handle (5), characterized in that: Also includes: The connecting mechanism (7) comprises a connecting shaft (701) rotatably connected to the top of the inner wall of the weeder (2), a wheel disc (702) being fixedly connected to the bottom of the connecting shaft (701), and an impact mechanism (8) being arranged on the inner wall of the wheel disc (702), and the connecting shaft (701) is driven to rotate by starting the gasoline engine (3) to output power, thereby driving the wheel disc (702) to rotate; The cutting assembly (703) comprises a mounting block (7031) fixedly connected to the surface of the wheel disc (702), a telescopic pad (7032) fixedly connected to the top of the mounting block (7031), a cutting blade (7033) fixedly connected to the top of the telescopic pad (7032), a telescopic cavity (7036) fixedly connected to the left side of the mounting block (7031), a feed pipe (7035) fixedly connected to the surface of the telescopic cavity (7036), and the feed pipe (7035) remotely connected to the cutting blade (7033). One end away from the telescopic cavity (7036) is fixedly connected to the surface of the wheel disc (702); a telescopic membrane (7037) is fixedly connected to the inner wall of the telescopic cavity (7036); the top of the telescopic membrane (7037) is fixedly connected to the bottom of the cutting blade (7033); a friction block (7034) is fixedly connected to the surface of the cutting blade (7033); and air pressure flows into the telescopic cavity (7036) to drive the telescopic membrane (7037) to telescope outwards and push the cutting blade (7033).

2. A lawn mower with an adjustable blade according to claim 1, characterized in that: The pushing mechanism (6) comprises a mounting frame (601), the mounting frame (601) being fixedly connected to the inner wall of the weeder (2), the inner wall of the mounting frame (601) being provided with a telescopic assembly (606), the surface of the mounting frame (601) being fixedly connected to a connecting block (602), the top of the connecting block (602) being fixedly connected to an air intake pipe (603), one end of the air intake pipe (603) away from the connecting block (602) being fixedly connected to the top of the inner wall of the weeder (2), the two sides of the connecting block (602) being fixedly connected to an expansion plate (604), the upper and lower sides of the expansion plate (604) being provided with expansion assemblies (605), after air pressure flows from the inside of the connecting block (602) into the expansion plate (604), it will flow from the inside of the expansion plate (604) into the expansion membrane (6051), and after the air pressure flows into the inside of the expansion membrane (6051), it will drive the expansion membrane (6051) to expand and retract toward the outside; The telescopic assembly (606) comprises a pulling arm (6061), wherein the pulling arm (6061) is fixedly connected to the top of the pushing handle (5), an impact column (6062) is fixedly connected to the right side of the inner wall of the mounting frame (601), a movable rod (6063) is fixedly connected to the surface of the impact column (6062), an end of the movable rod (6063) away from the impact column (6062) is fixedly connected to the left side of the inner wall of the mounting frame (601), and the pulling arm (6061) is slidably connected to the surface of the movable rod (6063). A stamping pad (6065) is fixedly connected to the surface of the movable rod (6063), and compression rods (6064) are fixedly connected to both sides of the inner wall of the stamping pad (6065). By pushing the pulling arm (6061) inward, the pulling arm (6061) will slide on the surface of the movable rod (6063). When the pulling arm (6061) slides to the surface of the stamping pad (6065), the stamping pad (6065) is squeezed, so that the compression rod (6064) inside the stamping pad (6065) is extended and retracted inward.

3. A lawn mower with an adjustable blade according to claim 2, characterized in that: The compression rod (6064) is made of a retractable soft material. When the compression rod (6064) is retracted inward, it compresses the internal space of the stamping pad (6065).

4. A lawn mower with an adjustable blade according to claim 2, characterized in that: The expansion component (605) comprises an expansion membrane (6051), wherein the expansion membrane (6051) is fixedly connected to one end of the extension plate (604), a buffer pad (6052) is fixedly connected to the bottom of the inner wall of the expansion membrane (6051), an impact frame (6053) is fixedly connected to the surface of the buffer pad (6052), an elastic rod (6054) is slidably connected to the inner wall of the buffer pad (6052), and both sides of the impact frame (6053) are fixedly connected to the surface of the expansion membrane (6051). The impact frame (6053) on the surface of the expansion membrane (6051) is pushed by grass seeds to expand and contract toward the inside of the buffer pad (6052), and the compressed gas inside the expansion membrane (6051) is discharged into the buffer pad (6052), and the compressed gas ejected outward pushes the elastic rod (6054).

5. The lawn mower with an adjustable blade disc according to claim 3, characterized in that: One end of the impact frame (6053) is made of a retractable membrane material. By generating pressure on one end of the impact frame (6053), the internal space of the buffer pad (6052) is compressed. The air pressure generated by the compression pushes the elastic rod (6054) inside the cushion, causing the elastic rod (6054) to retract outward and one end of the elastic rod pushes the surface of the impact frame (6053). The expansion membrane (6051) is driven to retract outward by the outwardly retracting impact frame (6053) and eject the flying grass seeds outward.

6. The lawn mower with an adjustable blade disc according to claim 2, characterized in that: The impact mechanism (8) comprises a mounting box (801), the mounting box (801) being fixedly connected to the inner wall of the wheel disc (702), the inner wall of the mounting box (801) being slidably connected to a propulsion rod (803), one end of the propulsion rod (803) being fixedly connected to a piston ring (804), one end of the piston ring (804) away from the propulsion rod (803) being fixedly connected to a contact block (805), the top of the contact block (805) being fixedly connected to an air cushion film (806), the right side of the mounting box (801) being fixedly connected to a clamping frame (802), the stretching strip (8073) being pulled outward drives the rotating arm (8071) to rotate inwardly on the inner wall of the clamping frame (802), and when the rotating arm (8071) rotates inwardly, it drives the cutting block (8072) to move to one side, so that the cutting block (8072) moves inwardly to the surface of the weeds; The shoveling assembly (807) comprises a rotating arm (8071), the rotating arm (8071) being rotatably connected to both sides of the inner wall of the clamping frame (802) via a rotating shaft, the end of the rotating arm (8071) away from the clamping frame (802) being fixedly connected to a cutting block (8072), the surface of the cutting block (8072) being fixedly connected to a stretching bar (8073), the end of the stretching bar (8073) away from the cutting block (8072) being fixedly connected to the inner wall of the pushing rod (803), the inner wall of the cutting block (8072) being fixedly connected to a rotating cavity (8076), the inner wall of the rotating cavity (8076) being rotatably connected to pushing arms (8075), the pushing arms (8075) being pushed by air pressure, so that one end of the pushing arms (8075) is rotated outwards inside the rotating cavity (8076) to the surface of the weeds.

7. A lawn mower with an adjustable blade disc according to claim 6, characterized in that: The piston ring (804) has the function of bending and stretching. When the piston ring (804) is subjected to external pressure, it bends to one side and drives the stretching bar (8073) to be pulled to one side. The stretching bar (8073) pulled to one side drives the rotating arm (8071) to rotate inwardly on the inner wall of the clamping frame (802). When the rotating arm (8071) rotates inwardly, it drives the cutting block (8072) to move to one side.

8. A method for using a lawn mower with an adjustable blade according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: holding the handle (1) to lift the weeder (2), and starting the switch of the gasoline engine (3) to output power to drive the connecting shaft (701) to rotate, and drive the wheel (702) to rotate, and the cutting blade (7033) on the surface of the wheel (702) to cut and clean the weeds; S2: The pulling arm (6061) is pushed inwardly to slide on the surface of the movable rod (6063). When the pulling arm (6061) slides to the surface of the punching pad (6065), it squeezes it, so that air pressure is generated inside the punching pad (6065) and flows into the connecting block (602). After the air pressure flows into the expansion membrane (6051), it drives it to expand and retract outward, and the expansion membrane (6051) expands and retracts outward and ejects the splashing grass seeds outward; S3: The three tentacles of the connecting shaft (701) discharge air pressure into the inside of the wheel disc (702), and discharge the air pressure into the telescopic chamber (7036) through the feeding pipe (7035). The air pressure flows into the telescopic chamber (7036) to drive the telescopic membrane (7037) to telescope outwards and push the cutting blade (7033). The cutting blade (7033) that telescopes outwards can cut the weeds; S4: When the cutting blade (7033) rotates, the friction block (7034) on its surface will come into compression contact with the surface of the air cushion film (806), so that one end of the push rod (803) slides downward on the inner wall of the installation box (801), and the push rod (803) slides inward, which drives one end of the stretching strip (8073) to be pulled outward, and when the cutting block (8072) moves inward to the surface of the weeds, the cutting block (8072) hits the weeds.

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