Driving device of mowing machine and mowing machine

Abstract

The invention relates to the field of garden machinery, and provides a driving device of a mower and the mower. The driving device of the mower comprises a driving motor; the transmission assembly is connected with an output shaft of the driving motor, and the transmission assembly is used for transmitting power of the output shaft; the first driving shaft and the second driving shaft are respectively connected with the transmission assembly, and the first driving shaft and the second driving shaft are respectively used for being connected with the first cutterhead and the second cutterhead; and the driving motor works to drive the first driving shaft and the second driving shaft to rotate through the transmission assembly, so that the first cutter head and the second cutter head are driven to rotate and work through the first driving shaft and the second driving shaft. Therefore, the driving motor is combined with the transmission assembly, the first cutter head and the second cutter head can be driven at the same time, the driving device is more compact in structure, the overall cost is remarkably reduced, and the overall weight of the mower is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of garden machinery technology, and in particular to a drive device for a lawnmower and a lawnmower. Background Technology

[0002] As a common piece of garden maintenance equipment, the performance, cost, and reliability of a lawnmower are directly affected by its blade drive method. Currently, dual-disc lawnmowers have two blades driven by two independent motors. The advantages are simple control and independent adjustment of the two blade speeds. However, they also have significant disadvantages such as high cost, substantial weight and power consumption, and complex structure.

[0003] In summary, existing dual-disc lawnmower drive solutions struggle to achieve a good balance in terms of cost, structural compactness, and weight. Summary of the Invention

[0004] The purpose of this invention is to overcome at least the problem that the existing dual-disc lawnmower drive schemes are difficult to balance in terms of cost, structural compactness, and weight, and to provide a lawnmower drive device and lawnmower.

[0005] The first aspect of this application provides a driving device for a lawnmower, comprising: a drive motor; a transmission assembly connected to the output shaft of the drive motor, the transmission assembly being used to transmit power from the output shaft; a first drive shaft and a second drive shaft, respectively connected to the transmission assembly, and the first drive shaft and the second drive shaft being respectively used to connect to a first cutter disc and a second cutter disc; wherein the drive motor operates to drive the first drive shaft and the second drive shaft to rotate via the transmission assembly, thereby driving the first cutter disc and the second cutter disc to rotate via the first drive shaft and the second drive shaft.

[0006] In some specific embodiments, the transmission assembly includes a first sub-transmission assembly and a second sub-transmission assembly, wherein the first sub-transmission assembly is connected to the output shaft and the first drive shaft, and the second sub-transmission assembly is connected to the output shaft and the second drive shaft.

[0007] In some specific embodiments, the first sub-drive assembly includes a first gear, and the second sub-drive assembly includes a second gear. The first gear and the second gear are respectively meshed with the output shaft. The first gear is used to drive the first cutter head to rotate, and the second gear is used to drive the second cutter head to rotate.

[0008] In some specific embodiments, the first transmission assembly further includes a third gear, which meshes with the first gear. The first gear is used to drive the third gear to rotate, thereby driving the first cutter head to rotate.

[0009] In some specific embodiments, the first transmission assembly further includes a fourth gear and a fifth gear. The fourth gear is meshed with the third gear, and the fifth gear is meshed with the fourth gear. The third gear is used to drive the fourth gear to rotate, and the fourth gear is used to drive the fifth gear to rotate, so as to drive the first cutter head to rotate.

[0010] In some specific embodiments, the rotation axes of the first gear and the second gear are parallel to the output shaft, and the rotation axes of the first gear and the second gear are symmetrically arranged about the output shaft so that the rotation directions of the first gear and the second gear are opposite.

[0011] In some specific embodiments, the first drive shaft and the second drive shaft are parallel to the output shaft, the rotation direction of the first drive shaft is the same as the rotation direction of the rotation shaft of the first gear, and the rotation direction of the second drive shaft is the same as the rotation direction of the second gear.

[0012] In some specific embodiments, the first gear includes a first gear portion and a second gear portion arranged along its axial direction, and the third gear includes a third gear portion and a fourth gear portion arranged along its axial direction. The first gear portion is meshed with the output shaft, and the second gear portion is meshed with the third gear portion.

[0013] In some specific embodiments, the first gear section is higher than the second gear section in the height direction of the lawnmower, and the third gear section is higher than the fourth gear section in the height direction of the lawnmower.

[0014] In some specific embodiments, the drive motor includes a main body and an output shaft. The main body is used to drive the output shaft to rotate. The main body is higher than the transmission assembly in the height direction of the lawnmower. The transmission assembly is higher than the first cutter head and the second cutter head in the height direction of the lawnmower.

[0015] A second aspect of this application provides a lawnmower, including a drive unit, a first cutter head, and a second cutter head as described in any of the above claims, wherein the drive unit drives the first cutter head and the second cutter head to rotate.

[0016] The present application possesses at least the following beneficial technical effects: Based on the driving device and lawnmower provided in this application, the driving device includes: a drive motor; a transmission assembly connected to the output shaft of the drive motor, the transmission assembly being used to transmit power from the output shaft; a first drive shaft and a second drive shaft, respectively connected to the transmission assembly, and the first drive shaft and the second drive shaft being respectively used to connect to a first cutter disc and a second cutter disc; wherein, the drive motor operates to drive the first drive shaft and the second drive shaft to rotate via the transmission assembly, thereby driving the first cutter disc and the second cutter disc to rotate via the first drive shaft and the second drive shaft. Therefore, by combining a drive motor with a transmission assembly, simultaneous driving of the first cutter disc and the second cutter disc can be achieved. This driving device has a more compact structure, significantly reduces the overall cost, and effectively reduces the overall weight of the lawnmower. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the drive device for the lawnmower provided in this application; Figure 2 yes Figure 1 The diagram shows the interaction between the structure shown and the first and second cutter heads. Figure 3 yes Figure 2 Top view of the structure shown; Figure 4 yes Figure 2 A bottom view of the structure shown; Figure 5 yes Figure 1 A partial structural diagram of the structure shown; Figure 6 yes Figure 5 A schematic diagram of the middle section structure; Figure 7 yes Figure 1 A schematic diagram of the middle section structure; Figure 8 This is a schematic diagram of the structure of one embodiment of the lawnmower provided in this application; Figure 9 yes Figure 8 The lawnmower shown is viewed from below. Figure 10 yes Figure 8 The diagram shown is a structural schematic of a lawnmower viewed from the bottom.

[0019] The components of this application are described as follows: a drive unit 100 for a lawnmower, a drive motor 10, a main body 11, an output shaft 12, a transmission assembly 20, a first sub-transmission assembly 21, a first gear 211, a first gear section 2111, a second gear section 2112, a third gear 212, a third gear section 2121, a fourth gear section 2122, a fourth gear 213, a fifth gear 214, a second sub-transmission assembly 22, a second gear 221, a first drive shaft 31, a second drive shaft 32, a lawnmower 200, a first cutter head 201, a second cutter head 202, a front wheel 203, a rear wheel 204, and a chassis 205. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0022] Furthermore, in embodiments of this invention, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the structures, features, devices, or elements referred to must have a specific orientation or positional relationship, nor that they must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this invention will not be described separately.

[0024] To overcome the difficulty in achieving a good balance in terms of cost, structural compactness, and weight in the existing dual-disc lawnmower drive scheme, this application provides a lawnmower drive device 100 and a lawnmower 200. This application provides a lawnmower drive device 100 and a lawnmower 200 that, through a drive motor 10 combined with a transmission assembly 20, can simultaneously drive the first blade 201 and the second blade 202. This drive device has a more compact structure, significantly reduces overall cost, and effectively lightens the overall weight of the lawnmower 200.

[0025] The first aspect of this application provides a drive device 100 for a lawnmower. Figure 1 This is a schematic diagram of an embodiment of the drive device 100 for a lawnmower provided in this application.

[0026] Combination Figure 1 The drive unit 100 of the lawnmower includes a drive motor 10 and a transmission assembly 20. The transmission assembly 20 is connected to the output shaft 12 of the drive motor 10 and is used to transmit power from the output shaft 12. The drive motor 10 can be mounted on the frame of the lawnmower 200, and its output shaft 12 extends vertically downwards. The output shaft 12 is connected to the transmission assembly 20 to transmit the power generated by the drive motor 10 to the subsequent drive shaft. In some applications, the drive motor 10 can be a brushless DC motor, which has the characteristics of high efficiency, low noise, and long life, and can provide stable and strong power output for the lawnmower 200. As the core hub of power transmission, the specific structural design of the transmission assembly 20 directly affects the efficiency and stability of power transmission. In this embodiment, the transmission assembly 20 can be a gear transmission mechanism, which realizes the distribution and transmission of power through the meshing of multiple gears.

[0027] Figure 2 yes Figure 1 The diagram shows the cooperation between the structure and the first cutter head 201 and the second cutter head 202. Figure 3 yes Figure 2 Top view of the structure shown. Figure 4 yes Figure 2 The bottom view of the structure shown.

[0028] Combination Figures 1-4The drive unit 100 of the lawnmower also includes a first drive shaft 31 and a second drive shaft 32, which are respectively connected to the transmission assembly 20. The first drive shaft 31 and the second drive shaft 32 are respectively used to connect to the first cutter head 201 and the second cutter head 202. The first drive shaft 31 and the second drive shaft 32 can be vertically arranged, with their top ends fixedly connected to the gear structure in the transmission assembly 20, and their bottom ends detachably fixed to the first cutter head 201 and the second cutter head 202 via key connections or flange connections, facilitating cutter head replacement and maintenance. When the drive motor 10 is working, its output shaft 12 drives the gears in the transmission assembly 20 to rotate, thereby transmitting power to the first cutter head 201 and the second cutter head 202 through the first drive shaft 31 and the second drive shaft 32, driving them to rotate synchronously or at a preset speed ratio, thus achieving the lawnmower operation.

[0029] In summary, the drive motor 10 operates to drive the first drive shaft 31 and the second drive shaft 32 to rotate via the transmission assembly 20, thereby driving the first cutter head 201 and the second cutter head 202 to rotate. In this configuration, the transmission assembly 20 allows the driving force of the same drive motor 10 to be transmitted to both the first drive shaft 31 and the second drive shaft 32, eliminating the need for separate motors to drive the two cutter heads and significantly reducing the manufacturing cost of the lawnmower. Furthermore, compared to a dual-motor drive system, the single drive motor 10, combined with the compact transmission assembly 20, results in a more concentrated structural layout of the entire drive unit, reducing the space occupied inside the lawnmower and facilitating miniaturization and weight reduction of the overall structure. In addition, reducing the number of motors also lowers overall power consumption and improves the lawnmower's endurance, making it particularly suitable for battery-powered portable lawnmowers.

[0030] Continue to combine Figure 2 In some specific embodiments, the transmission assembly 20 includes a first sub-transmission assembly 21 and a second sub-transmission assembly 22. The first sub-transmission assembly 21 is connected to the output shaft 12 and the first drive shaft 31, and the second sub-transmission assembly 22 is connected to the output shaft 12 and the second drive shaft 32.

[0031] Specifically, the first sub-drive assembly 21 and the second sub-drive assembly 22 are arranged in parallel, both obtaining power from the output shaft 12 of the drive motor 10, and transmitting the power to the first drive shaft 31 and the second drive shaft 32 respectively. This dual-path transmission design ensures that the power sources of the first cutter head 201 and the second cutter head 202 are independent yet unified by the same drive motor 10, guaranteeing the reliability of power transmission and simplifying the overall drive structure. For example, the first sub-drive assembly 21 can be located on the right side of the output shaft 12, and the second sub-drive assembly 22 can be located on the left side of the output shaft 12, forming a symmetrical layout, which helps to balance the center of gravity of the entire drive device.

[0032] Figure 5 yes Figure 1 A partial structural diagram of the structure shown.

[0033] Combination Figure 5 In some specific embodiments, the first sub-transmission assembly 21 includes a first gear 211, and the second sub-transmission assembly 22 includes a second gear 221. The first gear 211 and the second gear 221 are respectively meshed with the output shaft 12. The first gear 211 is used to drive the first cutter head 201 to rotate, and the second gear 221 is used to drive the second cutter head 202 to rotate.

[0034] Specifically, the output shaft 12 has an external tooth structure on its outer circumference. The first gear 211 and the second gear 221 have teeth that match the external teeth of the output shaft 12, allowing the first gear 211 and the second gear 221 to be directly fitted or meshed on the output shaft 12. When the output shaft 12 rotates under the drive of the drive motor 10, it synchronously drives the first gear 211 and the second gear 221 that mesh with it to rotate. At this time, the first gear 211 can be used to directly or indirectly drive the first cutter head 201 to rotate, and the second gear 221 is used to directly or indirectly drive the second cutter head 202 to rotate. This direct meshing transmission method has the advantages of simple structure and high transmission efficiency, and can reduce energy loss in the power transmission process. For example, when the first gear 211 is used to directly drive the first cutter head 201 to rotate, and the second gear 221 directly drives the second cutter head 202 to rotate, the center hole of the first gear 211 can be fixedly connected to the top end of the first drive shaft 31 by a flat key or spline, and the center hole of the second gear 221 is also fixedly connected to the top end of the second drive shaft 32. When the first gear 211 rotates under the drive of the output shaft 12, it will directly drive the first drive shaft 31 to rotate synchronously, thereby driving the first cutter head 201 to rotate; similarly, the second gear 221 drives the second drive shaft 32 and the second cutter head 202 to rotate.

[0035] Figure 6 yes Figure 5 A schematic diagram of the middle part of the structure.

[0036] Combination Figure 5 as well as Figure 6 In some specific embodiments, the first transmission assembly 20 further includes a third gear 212, which meshes with the first gear 211. The first gear 211 is used to drive the third gear 212 to rotate, thereby driving the first cutter head 201 to rotate.

[0037] Specifically, the teeth of the third gear 212 mesh with the teeth of the first gear 211. When the first gear 211 rotates under the drive of the output shaft 12, its teeth will engage the teeth of the third gear 212, thereby causing the third gear 212 to rotate around its own axis. The third gear 212 can directly or indirectly drive the first cutter head 201 to rotate. When the third gear 212 directly drives the first cutter head 201 to rotate, the center of the third gear 212 can be fixedly connected to the top end of the first drive shaft 31, for example, through interference fit, pin connection, or key connection, so that the rotation of the third gear 212 can be directly transmitted to the first drive shaft 31, thereby driving the first cutter head 201 to rotate.

[0038] Figure 7 yes Figure 1 A schematic diagram of the middle part of the structure.

[0039] Combination Figure 1 as well as Figure 7 In some specific embodiments, the first transmission assembly 20 further includes a fourth gear 213 and a fifth gear 214. The fourth gear 213 is meshed with the third gear 212, and the fifth gear 214 is meshed with the fourth gear 213. The third gear 212 is used to drive the fourth gear 213 to rotate, and the fourth gear 213 is used to drive the fifth gear 214 to rotate, so as to drive the first cutter head 201 to rotate.

[0040] Specifically, the teeth of the third gear 212 mesh with the teeth of the fourth gear 213, and the teeth of the fourth gear 213 mesh with the teeth of the fifth gear 214, forming a three-stage gear transmission path. When the third gear 212 rotates under the drive of the first gear 211, its teeth drive the fourth gear 213 to rotate around its own axis, and the fourth gear 213 then drives the fifth gear 214 to rotate through its meshing teeth. The center of the fifth gear 214 can be fixedly connected to the first drive shaft 31, for example, by a key connection or a flange connection, so that the rotational motion of the fifth gear 214 can be directly transmitted to the first drive shaft 31, thereby driving the first cutter head 201 to perform grass cutting operations. This multi-gear meshing transmission method allows for adjustment of the gear ratios according to actual needs, thereby achieving precise control of the rotational speed of the first cutter head 201 to adapt to different grass cutting conditions and grass species requirements. For example, by selecting the appropriate number of teeth on the third gear 212, fourth gear 213, and fifth gear 214, the output speed of the first drive shaft 31 can be reduced or increased, enabling the first cutter head 201 to cut at the optimal speed, thereby improving mowing efficiency and effectiveness. Simultaneously, multi-stage gear transmission also helps to distribute the load during the transmission process, improving the service life and operational stability of the entire transmission assembly 20.

[0041] It should be understood that this embodiment only describes that the first sub-transmission assembly 21 is composed of four gears. The configuration of the second sub-transmission assembly 22 can be referred to the configuration of the first sub-transmission assembly 21, and will not be described again.

[0042] Combination Figure 5 In some specific embodiments, the rotation axes of the first gear 211 and the second gear 221 are parallel to the output shaft 12, and the rotation axes of the first gear 211 and the second gear 221 are symmetrically arranged about the output shaft 12 so that the rotation directions of the first gear 211 and the second gear 221 are opposite.

[0043] Specifically, the rotation axes (i.e., their respective central axes) of the first gear 211 and the second gear 221 are spatially parallel to the output shaft 12 of the drive motor 10, ensuring smooth power transmission through proper meshing of the gears. Simultaneously, the rotation axes of the first gear 211 and the second gear 221 are symmetrically distributed on both sides of the output shaft 12, with the output shaft 12 as the axis of symmetry. This symmetrical layout not only makes the structure of the transmission assembly 20 more balanced, helping to reduce vibration and noise during operation, but more importantly, when the output shaft 12 drives the first gear 211 and the second gear 221 to rotate, since they are located on opposite sides of the output shaft 12 and mesh with it, their rotation directions exhibit opposite characteristics. For example, if the output shaft 12 rotates clockwise, the first gear 211, meshing with the right side of the output shaft 12, will experience a leftward meshing force, thus rotating counterclockwise; while the second gear 221, located on the left side of the output shaft 12, will experience a rightward meshing force, thus rotating clockwise.

[0044] Furthermore, in some specific embodiments, the first drive shaft 31 and the second drive shaft 32 are parallel to the output shaft 12. The rotation direction of the first drive shaft 31 is the same as the rotation direction of the rotation shaft of the first gear 211, and the rotation direction of the second drive shaft 32 is the same as the rotation direction of the second gear 221. In combination with the above, the rotation directions of the first drive shaft 31 and the second drive shaft 32 are opposite. This design, where the rotation directions of the first drive shaft 31 and the second drive shaft 32 are opposite, allows the first cutter head 201 and the second cutter head 202 to rotate in opposite directions. In lawn mowing operations, this reverse rotation design helps to spread the cut grass to both sides or gather it in the middle (depending on the specific cutter head design), effectively preventing grass from accumulating under the cutter head and affecting cutting efficiency, while also improving the uniformity of mowing and the quality of the work.

[0045] Combination Figure 6 In some specific embodiments, the first gear 211 includes a first gear portion 2111 and a second gear portion 2112 arranged along its axial direction, and the third gear 212 includes a third gear portion 2121 and a fourth gear portion 2122 arranged along its axial direction. The first gear portion 2111 is meshed with the output shaft 12, and the second gear portion 2112 is meshed with the third gear portion 2121.

[0046] Specifically, the first gear 211 has a first gear section 2111 and a second gear section 2112 arranged sequentially along its axial direction, i.e., along the central axis of the gear. These two gear sections can be integrally formed, constituting the whole of the first gear 211, or they can be fixedly connected as a whole by welding, keying, or other methods. The outer circumferential surface of the first gear section 2111 has teeth that match the external teeth of the output shaft 12, used to mesh with the output shaft 12 to receive power from the drive motor 10. The second gear section 2112 is located below or above the first gear section 2111 (determined according to the actual assembly space and transmission requirements). Its outer circumferential surface also has teeth, but its number of teeth, module, and other parameters can be different from those of the first gear section 2111, so as to mesh with the third gear section 2121 of the third gear 212. Correspondingly, the third gear 212 also has a third gear section 2121 and a fourth gear section 2122 arranged along its axial direction. The third gear section 2121 is disposed above or below the third gear 212, and its teeth mesh with the second gear section 2112 of the first gear 211, thereby receiving the power transmitted from the first gear 211. The fourth gear section 2122 can be disposed on the other side of the third gear section 2121 for meshing with subsequent transmission gears (such as the fourth gear 213) to further transmit power. This design, which integrates gear sections with different functions on the same gear shaft, effectively shortens the transmission path, reduces the number of gears, makes the structure of the transmission assembly 20 more compact, saves installation space, and also helps to ensure the coaxiality and stability of the transmission. For example, when the first gear portion 2111 of the first gear 211 meshes with the output shaft 12, the rotation of the output shaft 12 drives the first gear 211 to rotate as a whole. The second gear portion 2112 of the first gear 211 then meshes with the third gear portion 2121 of the third gear 212, driving the third gear 212 to rotate. The power is then transmitted to the next gear through the fourth gear portion 2122 of the third gear 212.

[0047] Furthermore, the first gear section 2111 is lower than the second gear section 2112 in the height direction of the lawnmower 200, and the third gear section 2121 is higher than the fourth gear section 2122 in the height direction of the lawnmower 200. This staggered design in the height direction allows the gear sections of the first gear 211 and the third gear 212 to form an interlaced layout in vertical space when meshing, avoiding mutual interference between the two in the radial direction. This allows the rotation axes of the first gear 211 and the third gear 212 to be set closer together, further reducing the overall lateral dimension of the transmission assembly 20 and improving the compactness of the structure. For example, the first gear portion 2111 of the first gear 211 is located below and meshes with the output shaft 12, the second gear portion 2112 is located above the first gear portion 2111, the third gear portion 2121 of the third gear 212 is located above and meshes with the second gear portion 2112, and the fourth gear portion 2122 is located below the third gear portion 2121. This staggered meshing method allows the center distance between the first gear 211 and the third gear 212 to be designed to be smaller, so that the entire transmission structure occupies less space in the horizontal direction, which is more conducive to the arrangement within the limited internal space of the lawnmower 200.

[0048] Combination Figure 1 In some specific embodiments, the drive motor 10 includes a main body 11 and an output shaft 12. The main body 11 drives the output shaft 12 to rotate. The main body 11 is higher than the transmission assembly 20 in the height direction of the lawnmower 200. The transmission assembly 20 is higher than the first cutter head 201 and the second cutter head 202 in the height direction of the lawnmower 200. This layout design allows the drive motor 10, the transmission assembly 20, and the cutter heads to form a hierarchical distribution in the vertical direction, which not only ensures the smoothness of the power transmission path but also makes reasonable use of the longitudinal space inside the lawnmower 200. Among them, the main body 11, as the core component of the drive motor 10, contains key structures such as the stator and rotor. Placing it above the transmission assembly 20 can prevent oil stains and debris generated during transmission from contaminating the motor body, and also facilitates heat dissipation of the motor, extending its service life. The transmission assembly 20 is located below the main body 11. Its gear transmission mechanism can efficiently transmit the power of the motor output shaft 12 to the first drive shaft 31 and the second drive shaft 32 below. The first cutter head 201 and the second cutter head 202 are installed at the bottom of the drive shaft, at the very bottom of the entire drive device, ensuring direct contact and cutting of the grass during mowing operations. In addition, this top-down layout makes the installation and maintenance of each component more convenient. For example, when the cutter head needs to be replaced, there is no need to disassemble the motor and transmission assembly 20 above; simply separate the cutter head from the drive shaft, greatly reducing maintenance difficulty and time costs.

[0049] The second aspect of this application provides a lawnmower 200, including a drive device 100, a first cutter head 201, and a second cutter head 202 as described in any of the above embodiments. The drive device 100 is used to drive the first cutter head 201 and the second cutter head 202 to rotate.

[0050] Figure 8 This is a schematic diagram of one embodiment of the lawnmower 200 provided in this application. Figure 9 yes Figure 8 The image shown is a bottom view of the lawnmower 200. Figure 10 yes Figure 8 The diagram shows the structure of the lawnmower 200 from a bottom view.

[0051] Combination Figures 8-10 The first cutter head 201 and the second cutter head 202 of the lawnmower 200 are exposed on the chassis 205 of the lawnmower 200 and are located between the front wheel 203 and the rear wheel 204 of the lawnmower 200, facilitating direct contact and cutting of the grass on the ground during mowing operations. The first cutter head 201 and the second cutter head 202 are typically arranged side-by-side below the chassis 205, with sharp blades along their edges. When rotated at high speed by the drive unit, they can quickly cut the passing grass. To ensure safety, a protective cover or guardrail is usually installed around the outer perimeter of the cutter head to prevent injury to the operator from flying grass clippings during cutting, and also to prevent foreign objects from being drawn into the cutter head and damaging the equipment. Furthermore, the first cutter head 201 and the second cutter head 202 rotate in opposite directions. This design allows the cut grass to be effectively pushed to both sides, reducing accumulation under the cutter head and ensuring that the lawnmower 200 can operate continuously and efficiently. For example, when the first cutter head 201 rotates clockwise and the second cutter head 202 rotates counterclockwise, the hay on both sides will be pushed to the left and right rear of the mower 200 respectively, forming neat hay ridges. This not only improves mowing efficiency but also makes subsequent hay collection or processing more convenient.

[0052] In some applications, the lawnmower 200 may also be equipped with a height adjustment mechanism on its chassis 205 to adjust the height of the blades from the ground, adapting to different grass cutting needs and further enhancing its practicality and applicability. Furthermore, the lawnmower 200 can be equipped with a walking drive system, independent of the blade drive unit. This system is typically powered by a separate small motor or internal combustion engine, driving the front wheel 203 or rear wheel 204 through a transmission mechanism to achieve forward, backward, and turning movements. The walking drive system works in conjunction with the blade drive unit, allowing operators to conveniently control the lawnmower 200's speed and direction, as well as the start, stop, and speed of the blades, via control buttons or joysticks on the handle, thus easily completing large-area lawn mowing operations. In some high-end models, the lawnmower 200 may also integrate an intelligent control system, using GPS positioning, sensor detection, and other technologies to achieve automatic path planning, obstacle avoidance, and return to charging, further reducing operator workload and improving work efficiency.

[0053] In summary, based on the lawnmower drive device 100 and lawnmower 200 provided in this application, the lawnmower drive device 100 includes: a drive motor 10; a transmission assembly 20 connected to the output shaft 12 of the drive motor 10, the transmission assembly 20 being used to transmit power from the output shaft 12; a first drive shaft 31 and a second drive shaft 32, respectively connected to the transmission assembly 20, and the first drive shaft 31 and the second drive shaft 32 being respectively used to connect to the first cutter head 201 and the second cutter head 202; wherein, the drive motor 10 operates to drive the first drive shaft 31 and the second drive shaft 32 to rotate via the transmission assembly 20, thereby driving the first cutter head 201 and the second cutter head 202 to rotate. Therefore, by combining a drive motor 10 with the transmission assembly 20, simultaneous driving of the first cutter head 201 and the second cutter head 202 can be achieved. This drive device has a more compact structure, significantly reduces the overall cost, and effectively reduces the overall weight of the lawnmower 200.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drive device for a lawnmower, characterized in that, include: Drive motor; A transmission assembly is connected to the output shaft of the drive motor and is used to transmit power from the output shaft. The first drive shaft and the second drive shaft are respectively connected to the transmission assembly, and the first drive shaft and the second drive shaft are respectively used to connect to the first cutter head and the second cutter head; The drive motor operates to drive the first drive shaft and the second drive shaft to rotate via the transmission assembly, thereby driving the first cutter head and the second cutter head to rotate via the first drive shaft and the second drive shaft.

2. The driving device for the lawnmower as described in claim 1, characterized in that, The transmission assembly includes a first sub-transmission assembly and a second sub-transmission assembly. The first sub-transmission assembly is connected to the output shaft and the first drive shaft, and the second sub-transmission assembly is connected to the output shaft and the second drive shaft.

3. The drive device for the lawnmower as described in claim 2, characterized in that, The first sub-drive assembly includes a first gear, and the second sub-drive assembly includes a second gear. The first gear and the second gear are respectively meshed with the output shaft. The first gear is used to drive the first cutter head to rotate, and the second gear is used to drive the second cutter head to rotate.

4. The drive device for the lawnmower as described in claim 3, characterized in that, The first transmission assembly further includes a third gear, which meshes with the first gear. The first gear drives the third gear to rotate, thereby driving the first cutter head to rotate.

5. The drive device for the lawnmower as described in claim 3, characterized in that, The first transmission assembly further includes a fourth gear and a fifth gear. The fourth gear is meshed with the third gear, and the fifth gear is meshed with the fourth gear. The third gear is used to drive the fourth gear to rotate, and the fourth gear is used to drive the fifth gear to rotate, so as to drive the first cutter head to rotate.

6. The drive device for the lawnmower as described in claim 3, characterized in that, The rotation axes of the first gear and the second gear are parallel to the output shaft, and the rotation axes of the first gear and the second gear are symmetrically arranged about the output shaft, so that the rotation directions of the first gear and the second gear are opposite.

7. The drive device for the lawnmower as described in claim 6, characterized in that, The first drive shaft and the second drive shaft are parallel to the output shaft. The rotation direction of the first drive shaft is the same as the rotation direction of the rotation shaft of the first gear, and the rotation direction of the second drive shaft is the same as the rotation direction of the second gear.

8. The drive device for the lawnmower as described in claim 4, characterized in that, The first gear includes a first gear section and a second gear section arranged along its axial direction, and the third gear includes a third gear section and a fourth gear section arranged along its axial direction. The first gear section is meshed with the output shaft, and the second gear section is meshed with the third gear section.

9. The drive device for a lawnmower as described in claim 8, characterized in that, The first gear section is lower than the second gear section in the height direction of the lawnmower, and the third gear section is higher than the fourth gear section in the height direction of the lawnmower.

10. The drive device for the lawnmower as described in claim 1, characterized in that, The drive motor includes a main body and an output shaft. The main body is used to drive the output shaft to rotate. The main body is higher than the transmission assembly in the height direction of the lawnmower. The transmission assembly is higher than the first cutter head and the second cutter head in the height direction of the lawnmower.

11. A lawnmower, characterized in that, The lawnmower includes a drive unit, a first cutter head, and a second cutter head as described in any one of claims 1-10, wherein the drive unit is used to drive the first cutter head and the second cutter head to rotate.

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