Lawn mower with adjustable cutting height

Abstract

The utility model discloses a mower convenient to adjust cutting height relates to mower technical field, including car body and the cutting cylinder of fixed connection in the middle part of car body, is established with the circular recess in the bottom of cutting cylinder, sets up cutting mechanism in the circular recess, and the upper end assembly of cutting mechanism elevating adjusting mechanism, and the four wheel hub motors of car body bottom surface all around are installed, and the visual detection module is set in the middle part of car body front end face, the utility model discloses through servo motor and transmission cylinder intercoordination, conveniently make the lifting plate along the screw rod axis direction up and down movement, has improved the convenience of cutting part height adjustment, and further realized the function of improving work efficiency, and through the extension spring and telescopic cylinder intercoordination, conveniently when the mower touches the bottom, retracts upward, has improved the security of cutting part use, and further realized the function of preventing cutting part damage, finally solved the equipment service life shorter and the problem of seriously influence work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a lawnmower with adjustable cutting height. Background Technology

[0002] In modern landscaping and agricultural ranch management, lawnmowers are essential equipment for efficient trimming of lawns and pastures, and their operational quality directly affects the aesthetics of the site and the health of the vegetation. Different types of grasslands, such as the fine turf of golf courses, the ornamental lawns of urban parks, and the large grasslands of agricultural ranches, have different requirements for mowing height. At the same time, the undulating terrain of grasslands also requires lawnmowers to be able to flexibly adjust the cutting height.

[0003] Most existing lawnmowers use manual adjustment, requiring operators to manually tighten screws or loosen pins to change the height of the cutting parts. This process is cumbersome and time-consuming, especially in large-area operations, where frequent adjustments severely impact work efficiency. Therefore, these technical problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lawnmower with adjustable cutting height.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lawnmower with adjustable cutting height, comprising a vehicle body and a cutting cylinder fixedly connected to the middle of the vehicle body, wherein a circular groove is provided at the bottom of the cutting cylinder, a cutting mechanism is provided in the circular groove, a lifting adjustment mechanism is mounted on the upper end of the cutting mechanism, four hub motors are installed around the bottom surface of the vehicle body, and a vision detection module is provided in the middle of the front surface of the vehicle body.

[0006] Preferably, the lifting adjustment mechanism includes a fixed cylinder fixedly connected to the center of the circular groove. A first screw and a second screw are rotatably mounted perpendicularly to each other between the inner side of the fixed cylinder and the inner wall of the cutting cylinder. Gears are fixedly connected to the top ends of both the first screw and the second screw, and the first screw and the second screw are connected to the lifting plate by threads.

[0007] Preferably, a limiting cylinder is fixedly connected vertically downward inside the cutting cylinder, and a transmission cylinder is rotatably sleeved on the limiting cylinder. The transmission cylinder meshes with the gears at the top of the first screw and the second screw, and a worm gear is meshed on one side of the transmission cylinder. One end of the worm gear is fixedly connected to the output shaft of the servo motor, and the servo motor is installed on the inner wall of the cutting cylinder by bolts.

[0008] Preferably, three fixing rods are evenly fixedly connected to the lower end of the lifting plate along the circumferential direction. All three fixing rods penetrate vertically through the fixing cylinder and are movably engaged inside the telescopic cylinder. A telescopic spring is provided inside the telescopic cylinder.

[0009] Preferably, the cutting mechanism includes a protective shell fixedly connected to the bottom of the telescopic cylinder, a drive motor is installed in the middle of the protective shell, and a rotating disk is rotatably connected to the lower end of the protective shell. Straw ropes are uniformly fixedly connected to the rotating disk along the circumferential direction, and a base plate is fixedly connected to the bottom of the rotating disk.

[0010] Preferably, an inclined plate is fixedly connected to the lower front end of the vehicle body, and multiple guide grooves are evenly opened at the lower end of the inclined plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a servo motor and a transmission cylinder to facilitate the movement of the lifting plate up and down along the screw axis, improving the convenience of adjusting the height of the cutting component and thus improving work efficiency. Furthermore, the telescopic spring and telescopic cylinder work together to facilitate the upward retraction when the lawnmower touches the bottom, improving the safety of the cutting component and preventing damage to the cutting component. Ultimately, this solves the problems of short equipment lifespan and serious impact on work efficiency. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention from a bottom view;

[0016] Figure 4 This is a frontal cross-sectional view of the structure proposed in this utility model;

[0017] Figure 5 This is a side view sectional structural diagram of the present invention;

[0018] Figure 6 The present utility model proposes Figure 5 Schematic diagram of the structure of part A in the middle;

[0019] Figure 7 This is a schematic diagram of the bottom-view cross-sectional structure proposed in this utility model;

[0020] Figure 8 This is a schematic diagram of the overall three-dimensional structure of the transmission ring proposed in this utility model.

[0021] The components in the diagram are numbered as follows: 1. Vehicle body; 2. Hub motor; 3. Vision inspection module; 4. Cutting cylinder; 5. Fixing cylinder; 6. Base plate; 7. Straw rope; 8. Drive motor; 9. First screw; 10. Second screw; 11. Limiting cylinder; 12. Transmission cylinder; 13. Worm gear; 14. Telescopic cylinder; 15. Telescopic spring; 16. Inclined plate; 17. Servo motor; 18. Lifting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example: See Figure 1-8 The lawnmower of this invention, which allows for easy adjustment of cutting height, includes a vehicle body 1 and a cutting cylinder 4 fixedly connected to the middle of the vehicle body 1. A circular groove is formed at the bottom of the cutting cylinder 4, within which a cutting mechanism is installed. A lifting adjustment mechanism is mounted on the upper end of the cutting mechanism. Four hub motors 2 are installed around the bottom of the vehicle body 1, and a vision inspection module 3 is located in the center of the front end of the vehicle body 1. The vehicle body 1 and the cutting cylinder 4 form a platform for the lawnmower. Each hub motor 2 has a rated power of 200W and a rated speed of 300r / min, enabling the lawnmower to travel at a speed of 3-5km / h on flat lawns, ensuring efficient mowing operations. The lifting adjustment mechanism includes a fixed cylinder 5 fixedly connected to the middle of the circular groove. A first screw 9 and a second screw 10 are vertically and rotatably mounted between the inner side of the fixed cylinder 5 and the inner wall of the cutting cylinder 4. Teeth are fixedly connected to the top ends of both the first screw 9 and the second screw 10. The cutting cylinder 4 has a wheel, and the first screw 9 and the second screw 10 are connected to the lifting plate 18 by threads. The first screw 9 and the second screw 10 cooperate with each other to facilitate the lifting plate 18 to move up and down along the screw axis, thereby adjusting the height of the cutting mechanism. The vertical lifting distance of the lifting plate 18 is 10 to 150 mm, that is, the cutting height adjustment range of the cutting mechanism is 10 to 150 mm, which can meet the needs of different lawn mowing heights. The cutting cylinder 4 has a limit cylinder 11 fixedly connected vertically downward inside. The limit cylinder 11 is rotatably sleeved on the transmission cylinder 12. The transmission cylinder 12 meshes with the gears at the top of the first screw 9 and the second screw 10. A worm gear 13 is meshed on one side of the transmission cylinder 12. One end of the worm gear 13 is fixedly connected to the output shaft of the servo motor 17. The servo motor 17 is installed on the inner wall of the cutting cylinder 4 by bolts. The servo motor 17 and the transmission cylinder 12 facilitate the mutual transfer of kinetic energy.

[0024] In this utility model, three fixed rods are evenly fixedly connected to the lower end of the lifting plate 18 along the circumferential direction. All three fixed rods vertically penetrate the fixed cylinder 5 and are movably engaged inside the telescopic cylinder 14. A telescopic spring 15 is installed inside the telescopic cylinder 14. Through the telescopic cylinder 14 and the telescopic spring 15, the position of the cutting mechanism can be adaptively adjusted when encountering uneven terrain, ensuring the cutting effect. The cutting mechanism includes a protective shell fixedly connected to the bottom end of the telescopic cylinder 14. A drive motor 8 is installed in the middle of the protective shell, and a rotating disk is rotatably connected to the lower end of the protective shell. The mowing ropes 7 are evenly fixedly connected along the circumference, and the bottom plate 6 is fixedly connected to the bottom of the rotating disk. The bottom plate 6 and the rotating disk protect the mowing ropes 7 from direct friction damage to the ground. On the other hand, it provides support and guidance during the mowing process, making the mowing more even. The lower front end of the vehicle body 1 is fixedly connected to the inclined plate 16. Multiple guide grooves are evenly opened at the lower end of the inclined plate 16. The inclined plate 16 and the guide grooves facilitate the guidance of weeds to the cutting mechanism, avoiding weeds being missed and improving the efficiency and quality of mowing.

[0025] Working Principle: In use, this invention first powers the lawnmower via four hub motors 2, driving it to move across the lawn. Then, a vision detection module 3 at the front of the vehicle body 1 uses sensors such as cameras or lidar to collect real-time images and data on the lawn terrain and weed distribution, providing a data foundation for precise mowing and height adjustment. When height adjustment is needed, the servo motor 17 is activated, rotating the worm gear 13. Since the worm gear 13 meshes with one side of the transmission cylinder 12, its rotation drives the transmission cylinder 12 to rotate on the limiting cylinder 11. The transmission cylinder 12 then meshes with the gears at the top of the first screw 9 and the second screw 10, achieving synchronous rotation. The lifting plate 18 moves up and down along the screw axis to adjust the height of the cutting mechanism. During the cutting process, the drive motor 8 drives the rotating disk to rotate, causing the mowing ropes 7, which are evenly fixed along the circumference of the rotating disk, to rotate at high speed. Using centrifugal force and the flexibility of the ropes, the mower cuts the weeds on the lawn. When the mower base plate 6 rubs against the ground, the telescopic cylinder 14 and the internal telescopic spring 15 provide cushioning to prevent the base plate 6 from making hard contact with the ground, thus ensuring the cutting effect and providing some protection for the mower. Furthermore, the inclined plate 16 and the guide groove facilitate simple weed trimming during the mower's forward movement, improving mowing efficiency and quality.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lawnmower with adjustable cutting height, comprising a body (1) and a cutting cylinder (4) fixedly connected to the middle of the body (1), characterized in that: The bottom of the cutting cylinder (4) is provided with a circular groove, and a cutting mechanism is provided in the circular groove. The upper end of the cutting mechanism is equipped with a lifting adjustment mechanism. Four hub motors (2) are installed around the bottom surface of the vehicle body (1), and a vision detection module (3) is provided in the middle of the front end surface of the vehicle body (1).

2. The lawnmower with adjustable cutting height according to claim 1, characterized in that: The lifting adjustment mechanism includes a fixed cylinder (5) fixedly connected to the center of a circular groove. The inner side of the fixed cylinder (5) and the inner wall of the cutting cylinder (4) are vertically and rotatably mounted with a first screw (9) and a second screw (10). The top ends of the first screw (9) and the second screw (10) are fixedly connected with gears, and the first screw (9) and the second screw (10) are connected to the lifting plate (18) by threads.

3. The lawnmower with adjustable cutting height according to claim 2, characterized in that: The cutting cylinder (4) is vertically and downwardly fixedly connected to a limiting cylinder (11). A transmission cylinder (12) is rotatably sleeved on the limiting cylinder (11). The transmission cylinder (12) meshes with the gears at the top of the first screw (9) and the second screw (10). A worm gear (13) is meshed on one side of the transmission cylinder (12). One end of the worm gear (13) is fixedly connected to the output shaft of the servo motor (17). The servo motor (17) is installed on the inner wall of the cutting cylinder (4) by bolts.

4. The lawnmower with adjustable cutting height according to claim 2, characterized in that: The lower end of the lifting plate (18) is uniformly fixedly connected with three fixed rods along the circumferential direction. All three fixed rods penetrate the fixed cylinder (5) vertically and are movably engaged inside the telescopic cylinder (14). The telescopic cylinder (14) is provided with a telescopic spring (15).

5. The lawnmower with adjustable cutting height according to claim 4, characterized in that: The cutting mechanism includes a protective shell fixedly connected to the bottom of the telescopic cylinder (14), a drive motor (8) is installed in the middle of the protective shell, and a rotating disk is rotatably connected to the lower end of the protective shell. Straw ropes (7) are evenly fixedly connected to the rotating disk along the circumferential direction, and a base plate (6) is fixedly connected to the bottom of the rotating disk.

6. The lawnmower with adjustable cutting height according to claim 1, characterized in that: An inclined plate (16) is fixedly connected to the lower front end of the vehicle body (1), and multiple guide grooves are evenly opened at the lower end of the inclined plate (16).

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