Height-adjustable mower

Abstract

The utility model relates to the technical field of mowing machines, and discloses a height-adjustable mowing machine which comprises a machine base, a lifting assembly and a lifting frame, and four mounting bases are arranged on the inner side of the machine base; the lifting assembly comprises a swing arm rotationally connected with the mounting base and a gear meshed with an outer gear ring on the swing arm to drive the swing arm to swing. Two fixing shafts on the lifting frame are fixedly connected with the swing arms respectively, a gear motor fixedly arranged on the outer side of the lifting frame drives one gear to rotate, the gears are meshed with the outer gear ring to drive the swing arms to swing to drive the lifting frame to ascend and descend, and the height of the blade is adjusted. The height of the blade is adjusted through meshing of the gear driven by the speed reducing motor and the outer gear ring, electric driving is more accurate than manual adjustment, a user does not need to directly contact and adjust mechanical parts, operation complexity and labor intensity are reduced, and particularly fatigue of the user can be reduced during continuous operation.

Description

Technical Field

[0001] This utility model belongs to the field of lawnmower technology, specifically relating to an adjustable-height lawnmower. Background Technology

[0002] During lawn mowing, the frequency and force of the blade's contact with the grass may vary depending on the grass's height. By adjusting the blade height, users can better adapt to different cutting needs, reduce the risk of blade damage, and flexibly adjust the lawnmower's height to complete mowing tasks more efficiently.

[0003] Some lawnmowers come with a handheld switch, allowing users to adjust the blade height by simply rotating or sliding the switch. Others typically have a screw on the bottom for adjusting the blade height. Users can adjust the blade height by rotating or tightening the screw.

[0004] Adjusting the height of a lawnmower blade using a handheld switch or screw requires manual operation by the user, which can be time-consuming and physically demanding, especially when frequent height adjustments are needed. Adjusting the blade height using a handheld switch or screw requires stopping the machine to do so, which may interrupt the workflow and affect work efficiency, particularly when the machine height requirement changes frequently. Utility Model Content

[0005] To overcome the shortcomings of existing technology, this utility model proposes a height-adjustable lawnmower.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An adjustable-height lawnmower includes a base, a lowering assembly, and a lifting frame. The base has four mounting seats on its inner side. The lifting assembly includes a swing arm rotatably connected to the mounting seats and a gear that meshes with an external gear ring on the swing arm to drive the swing arm to swing. The lifting frame has two fixed shafts connected to its front and rear ends, and the two ends of the two fixed shafts are respectively fixedly connected to the swing arm. Blades are mounted on the lifting frame.

[0008] The height of the blade is adjusted by rotating one of the gears driven by a reduction motor fixed on the outside of the lifting frame, which in turn drives the swing arm to swing and raise or lower the lifting frame through the meshing of the gear with the external gear ring.

[0009] This height-adjustable lawnmower adjusts the blade height by meshing a geared motor with a gear and an external gear ring. Electric drive is more precise than manual adjustment, allowing for finer height adjustments and ensuring the blades are always cutting at the ideal height for better cutting results. It eliminates the need for users to directly contact and adjust mechanical parts, reducing operational complexity and labor intensity, especially during continuous operation, thus reducing user fatigue.

[0010] Preferably, the swing arm includes a sector plate and a swing rod that is integral with the sector plate and rotatably connected to the mounting base. The sector plate and its connected fixed shaft are on the same central axis, and the external gear ring is located on the outer edge of the sector plate.

[0011] Preferably, the top of the lifting frame has a through hole, and an X-shaped bracket fixedly connected to the lifting frame is provided inside the through hole. A disc is provided at the center of the inner side of the X-shaped bracket, and the bottom of the disc is fixedly connected to the cutter head by a number of support rods arranged in a ring at equal intervals.

[0012] Preferably, the blade is rotatably located inside the cutter head, and a drive motor for driving the blade to rotate is provided on the top of the cutter head.

[0013] Driven and controlled by a geared motor, the X-shaped bracket and disc on the lifting frame rise and fall. The drive motor is mounted on top of the cutter head, and its power is transmitted to the blades, causing them to rotate.

[0014] Preferably, the base has two mounting supports on both sides of its inner bottom, and the four mounting supports are symmetrically arranged at the front and rear ends of the inner side of the mounting supports to ensure the stability and balance of the lawnmower.

[0015] Preferably, the sector plate has guide holes that cooperate with the guide rods on the lifting frame; this design can control the lifting range and direction of the lifting frame, while ensuring the stable movement of the lifting frame.

[0016] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This height-adjustable lawnmower can achieve precise adjustment of the lifting frame and blade height through the electric drive reduction motor and the meshing of gears and external gear rings, ensuring that the blades are always cutting at the ideal height, improving the cutting effect and the aesthetics of the lawn. Users do not need to directly contact and adjust the mechanical parts; they can adjust the blade height by controlling the input of the reduction motor, reducing the complexity and labor intensity of operation and improving the convenience of user operation.

[0017] The electric system reduces the risks users may encounter during operation. At the same time, the shape design of the fan blade and the durable design of the outer toothed ring improve the overall durability of the system and extend the service life of the lawnmower. Due to the special design of the swing arm and fan blade, the blade can better adapt to the cutting needs of different grass heights, improving the adaptability of the lawnmower and increasing the cutting effect. It can complete the mowing task faster and more evenly. The electric adjustment system can respond quickly and adjust the blade height immediately, improving work efficiency. Especially when frequent height adjustments are required, it can reduce downtime and improve the efficiency of continuous operation. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention after the base has been removed;

[0021] Figure 4 This is a schematic diagram of the swing arm of this utility model.

[0022] In the diagram: 1. Base; 2. Mounting support; 3. Mounting seat; 4. Lifting assembly; 41. Swing arm; 4101. External gear ring; 4102. Sector plate; 4103. Swing rod; 4104. Guide hole; 42. Gear; 5. Lifting frame; 6. Fixed shaft; 7. Blade; 8. Gear motor; 9. Through hole; 10. X-shaped bracket; 11. Disc; 12. Support rod; 13. Cutter head; 14. Drive motor; 15. Limiting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The following is combined with Figure 1-4 This application will be described in further detail.

[0025] This application discloses an adjustable-height lawnmower, including a base 1, a lowering assembly, and a lifting frame 5. The base 1 has four mounting seats 3 on its inner side; two mounting supports 2 are located on both sides of the bottom inner side of the base 1. The four mounting seats 3 are symmetrically arranged at the front and rear ends of the inner side of the mounting supports 2 to ensure the stability and balance of the lawnmower. The design of the mounting supports 2 and mounting seats 3 makes the lawnmower's body structure more stable, improving the overall stability and durability of the lawnmower. The symmetrical arrangement of the mounting seats 3 ensures a balanced center of gravity for the lawnmower, preventing swaying or shifting during operation, thus improving the operating comfort and cutting effect of the lawnmower.

[0026] The lifting assembly 4 includes a swing arm 41 rotatably connected to the mounting base 3 and a gear 42 that meshes with an external gear ring 4101 on the swing arm 41 to drive the swing arm 41 to swing; the front and rear ends of the lifting frame 5 are connected to two fixed shafts 6, and the two ends of the two fixed shafts 6 are respectively fixedly connected to the swing arm 41; the lifting frame 5 is equipped with a blade 7.

[0027] The gear 8, which is fixedly mounted on the outside of the lifting frame 5, drives one of the gears 42 to rotate. The gear 42 meshes with the outer gear ring 4101, thereby driving the swing arm 41 to swing and the lifting frame 5 to rise and fall, so as to adjust the height of the blade 7.

[0028] This height-adjustable lawnmower adjusts the blade height 7 by meshing the gear 42 driven by the reduction motor 8 with the external gear ring 4101. Electric drive is more precise than manual adjustment, allowing for finer height adjustments and ensuring that the blade 7 is always cutting at the ideal height, thus achieving better cutting results. It eliminates the need for users to directly contact and adjust mechanical parts, reducing the complexity and labor intensity of operation, especially reducing user fatigue during continuous operation.

[0029] The geared motor 8 is connected to the electric adjustment system of the lawnmower. The electric adjustment system can respond quickly and adjust the height of the blade 7 immediately, improving work efficiency. Especially when the height needs to be adjusted frequently, the electric adjustment can ensure the consistency of the blade 7 height every time the lawn is mowed. This is very important for maintaining the beauty and health of the lawn. The electric system is generally safer than the manual system, reducing the risks that users may encounter during operation.

[0030] After the geared motor 8 is combined with the electric adjustment system, other electronic control systems of the lawnmower are integrated, such as automatic navigation and battery management system, thereby improving the overall intelligence level of the machine.

[0031] Compared to traditional manual lawnmowers, which may require users to stop the machine multiple times and make tedious physical adjustments during operation, resulting in time-consuming operation and potentially poor cutting results, this height-adjustable lawnmower offers significant advantages in terms of user convenience, cutting effect, safety, and intelligence.

[0032] The swing arm 41 includes a sector plate 4102 and a swing rod 4103 that is integral with the sector plate 4102 and rotatably connected to the mounting base 3. The sector plate 4102 and its connected fixed shaft 6 are on the same central axis. The external gear ring 4101 is located on the outer edge of the sector plate 4102.

[0033] The geared motor 8 drives the gear 42 to rotate. The gear 42 meshes with the external gear ring 4101 on the swing arm 41. As the gear 42 rotates, the swing arm 41 begins to swing. The swing of the swing arm 41 drives the fixed shaft 6 and the lifting frame 5 connected to it, causing the lifting frame 5 to rise or fall. The rising or falling of the lifting frame 5 adjusts the position of the blade 7, thereby adjusting the height of the blade 7.

[0034] Thanks to the special design of the swing arm 41 and the fan-shaped plate 4102, the blade 7 can better adapt to the cutting needs of different grass heights, improving the adaptability of the lawnmower, enabling more precise lawn cutting, and reducing damage to the lawn. Users can adjust the height of the blade 7 by controlling the input of the geared motor 8, without directly contacting and adjusting mechanical parts, reducing operational complexity and labor intensity. The shape design of the fan-shaped plate 4102 and the durable design of the external gear ring 4101 improve the durability of the entire system and extend the service life of the lawnmower.

[0035] The sector plate 4102 has a guide hole 4104 that guides the limiting rod 15 on the lifting frame 5. This design allows control over the lifting range and direction of the lifting frame 5, while ensuring stable movement. The guide hole 4104 and the limiting rod 15 limit the range of motion of the lifting frame 5, ensuring that the blade 7 moves within a specified height range and preventing unnecessary damage or deviation. The combined design of the guide hole 4104 and the limiting rod 15 makes the adjustment of the lifting frame 5 more precise and convenient.

[0036] The top of the lifting frame 5 has a through hole 9, and an X-shaped bracket 10 fixedly connected to the lifting frame 5 is provided inside the through hole 9. A disc 11 is provided at the center of the inner side of the X-shaped bracket 10, and the bottom of the disc 11 is fixedly connected to the cutter head 13 through a number of support rods 12 arranged in a ring at equal intervals.

[0037] The blade 7 is rotatably disposed on the inner side of the cutter head 13, and the top of the cutter head 13 is provided with a drive motor 14 for driving the blade 7 to rotate.

[0038] Driven and controlled by the geared motor 8, the X-shaped bracket 10 and the disc 11 on the lifting frame 5 are raised and lowered. The drive motor 14 is mounted on the top of the cutter head 13, and transmits power to the blade 7 to make the blade 7 rotate.

[0039] The design of the X-shaped bracket 10, support rod 12, and disc 11 ensures that the position of the blade disc 13 is stable and reliable, preventing loosening or positional deviation, thus ensuring the stability of the blade 7 during the cutting process. The drive motor 14 on top of the blade disc 13 allows the blade 7 to rotate, increasing the cutting effect and enabling faster and more even completion of mowing tasks. The reasonable structural design of the X-shaped bracket 10 and disc 11 is suitable for high-intensity working environments, improving the durability and stability of the lawnmower.

[0040] When in use, the user turns on the power of the lawnmower, causing the geared motor 8 to start working. The geared motor 8 drives the gear 42 to rotate through its output shaft. Due to the characteristics of the geared motor 8, the rotational speed of the gear 42 will decrease, but the rotational torque will increase. The gear 42 meshes with the external gear ring 4101 on the swing arm 41, transmitting power to the external gear ring 4101. The external gear ring 4101, receiving the power input from the gear 42, begins to rotate, causing the swing arm 41 connected to it to swing. The swing of the swing arm 41 is transmitted to the lifting frame 5 through the connected fixed shaft 6, causing the lifting frame 5 to rise or fall. The rise or fall of the lifting frame 5 adjusts the position of the blade 7, thereby adjusting the height of the blade 7. The blade 7 cuts the lawn during the operation of the lawnmower, and the cutting height of the lawn is determined by the height of the blade 7.

[0041] If the cutting height needs to be adjusted, the user can continue to adjust the input of the gear motor 8, thereby changing the rotational speed and torque of the gear 42, and thus adjusting the swing amplitude of the swing arm 41 to achieve continuous blade 7 height adjustment.

[0042] Throughout the entire working process, the user adjusts the height of the blade 7 by controlling the input of the geared motor 8, without having to directly contact and adjust the mechanical parts. This ensures both operational safety and improves the accuracy and efficiency of adjustment.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A height-adjustable lawnmower, characterized in that, include: The base (1) has four mounting seats (3) on its inner side; The lifting assembly (4) includes a swing arm (41) rotatably connected to the mounting base (3) and a gear (42) meshing with an external gear ring (4101) on the swing arm (41) to drive the swing arm (41) to swing. The lifting frame (5) has two fixed shafts (6) connected to its front and rear ends. The two ends of the two fixed shafts (6) are respectively fixedly connected to the swing arm (41). The lifting frame (5) is equipped with blades (7). The gear (8) fixedly installed on the outside of the lifting frame (5) drives one of the gears (42) to rotate. The gear (42) meshes with the outer gear ring (4101) to drive the swing arm (41) to swing and drive the lifting frame (5) to rise and fall, thereby adjusting the height of the blade (7).

2. The adjustable-height lawnmower according to claim 1, characterized in that: The swing arm (41) includes a sector plate (4102) and a swing rod (4103) that is integral with the sector plate (4102) and rotatably connected to the mounting base (3). The sector plate (4102) and its connected fixed shaft (6) are on the same central axis. The external gear ring (4101) is located on the outer edge of the sector plate (4102).

3. The adjustable-height lawnmower according to claim 1, characterized in that: The top of the lifting frame (5) has a through hole (9), and the inside of the through hole (9) is provided with an X-shaped bracket (10) that is fixedly connected to the lifting frame (5). The center of the inside of the X-shaped bracket (10) is provided with a disc (11), and the bottom of the disc (11) is fixedly connected to the cutter head (13) by a number of support rods (12) arranged in a ring at equal intervals.

4. The adjustable-height lawnmower according to claim 3, characterized in that: The blade (7) is rotatably disposed on the inner side of the cutter head (13), and the top of the cutter head (13) is provided with a drive motor (14) for driving the blade (7) to rotate.

5. The adjustable-height lawnmower according to claim 4, characterized in that: The base (1) has two mounting supports (2) on the inner bottom sides, and four mounting seats (3) are symmetrically arranged at the front and rear ends of the inner side of the mounting supports (2).

6. The adjustable-height lawnmower according to claim 2, characterized in that: The fan-shaped plate (4102) is provided with a guide hole (4104) for guiding the limit rod (15) on the lifting frame (5).

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