Lawn mower
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-08-13
Smart Images
Figure CN2025076443_13082026_PF_FP_ABST
Abstract
Description
A lawnmower Technical Field
[0001] This application relates to the field of lawn mowing equipment, and in particular to a lawn mower. Background Technology
[0002] As a core tool for garden maintenance, lawnmowers play a crucial role in lawn trimming and horticultural landscape maintenance. However, with the evolution of technology and the increasing demands of users for lawnmower performance, lawnmower performance is constantly evolving, striving for breakthroughs in ease of operation, mowing efficiency, and safety.
[0003] Most lawnmowers in related technologies rely on bolts to secure various devices, mechanisms, or components. When a particular device, mechanism, or component needs to be disassembled individually, the operator must use tools each time, increasing the time cost of finding tools and introducing additional operational steps. Furthermore, because these devices, mechanisms, or components are typically secured by multiple bolts, and the number of bolts is relatively large, each installation or disassembly process is relatively cumbersome and time-consuming, requiring at least 5 minutes each time, and sometimes more than 30 minutes for complex structures, thus reducing the maintenance efficiency of the lawnmower. Summary of the Invention
[0004] To improve the maintenance efficiency and convenience of lawnmowers, this application provides a lawnmower.
[0005] A lawnmower includes a power unit and a mowing device. The power unit includes a base, and the mowing device includes a blade holder, which is detachably connected to the base. The base is provided with a first locking device for fixing the blade holder. The first locking device includes a first mounting rod, a first pin, and a first locking mechanism. The first mounting rod is disposed on the base, and its end has a first insertion hole. The blade holder has a through-hole, and the first pin passes through the through-hole and the first insertion hole in sequence. The first locking mechanism is disposed on the first mounting rod and is used to fix the first pin.
[0006] Using the above solution, during operation, the first pin passes through the through hole on the blade holder and the first insertion hole on the first mounting rod, and is then fixed by the first locking mechanism, enabling quick assembly and disassembly of the blade holder and the base, and quick installation and disassembly of the mowing device and the power unit. This application uses the first pin to replace the traditional bolt fixing method, eliminating the need for tools such as wrenches to manually remove the cutting device, reducing tool usage and improving the maintenance efficiency of the lawnmower.
[0007] Optionally, the first locking mechanism includes a first locking rod and a first elastic element. The first mounting rod has a first sliding hole, the axis of which is perpendicular to the axis of the first insertion hole. The first locking rod passes through the first sliding hole and slides in cooperation with it. The first elastic element is sleeved on the first locking rod and is disposed within the first sliding hole. One end of the first elastic element is fixedly connected to the first locking rod, and the other end is fixedly connected to the inner wall of the first sliding hole. When the first elastic element is not subjected to external force, the first locking rod abuts against the surface of the first pin under the elastic force of the first elastic element.
[0008] Using the above scheme, the first locking rod slides within the first sliding hole, and in conjunction with the elastic force of the first elastic element, effectively fixes and releases the first pin. Once the first pin is inserted into place, the first locking rod, pushed by the first elastic element, locks the first pin in place, preventing it from falling out and securely connecting the tool holder and the machine base. When it is necessary to disassemble the connection between the tool holder and the machine base, the user only needs to overcome the elastic force of the first elastic element and move the first locking rod to release the first pin; this step typically takes 0-5 seconds.
[0009] Optionally, a first positioning groove is provided on the outer side wall of the first pin. When the first pin is not subjected to external force, the elastic force of the first elastic element drives the end of the first locking rod to abut against the bottom of the first positioning groove.
[0010] With the above solution, the first positioning groove on the first pin and the end of the first locking rod cooperate with each other. Under the elastic force of the first elastic element, the end of the first locking rod can stably abut against the bottom of the first positioning groove, thus achieving a firm lock on the first pin. This enhances the stability of the connection, prevents the first pin from accidentally falling off under vibration or external force, ensures a reliable connection between the blade holder and the base, and improves the safety and durability of the lawnmower.
[0011] Optionally, a first connecting device is provided between the base and the first locking device, and the first locking device can swing left and right through the first connecting device; the first connecting device includes at least two connecting rods, one end of the connecting rod is rotatably connected to the base, and the other end of the connecting rod is rotatably connected to the first mounting rod.
[0012] With the above-mentioned design, when the lawnmower is moving forward and there is a height difference or slope in the left-right direction, the blade holder can be finely adjusted within the aforementioned limited rotation angle. This fine-tuning capability allows the mowing device to better adapt to diverse mowing needs, maintaining high work efficiency and ease of operation whether going uphill or downhill. The first connecting device is implemented through at least two linkages, allowing the first locking device to swing to a certain extent relative to the base when there is a height difference or slope in the left-right direction during the lawnmower's forward movement. This helps maintain stable contact between the mowing device and the ground and reduces the impact of terrain changes on the lawnmower's operational stability.
[0013] Optionally, a second connecting device is provided between the first locking device and the tool holder, and the tool holder can swing in the back and forth direction through the second connecting device.
[0014] By adopting the above solution, when faced with changes in slope, the blade holder can be finely adjusted within a limited rotation angle, enabling the mowing device to better adapt to diverse mowing needs. Whether going uphill or downhill, it can maintain high work efficiency and ease of operation.
[0015] Optionally, the second connecting device includes at least one connecting block, the tool holder includes a top tool holder, the top tool holder is rotatably connected to the connecting block, and the through hole is opened on the connecting block; the first mounting rod has an assembly groove for positioning the connecting block, and one side of the assembly groove is open; when the connecting block is installed in the assembly groove, the side wall of the connecting block abuts against the inner side wall of the assembly groove, and the axis of the first insertion hole coincides with the axis of the through hole.
[0016] The above-described design, with one side of the assembly slot open, facilitates quick alignment and insertion of the connecting block. When the connecting block is fully installed in the assembly slot, its sidewall tightly abuts against the inner sidewall of the slot, ensuring a stable connection between the blade holder and the base. Simultaneously, the first pin passes through the guide hole and the first insertion hole, and is securely locked by the first elastic locking mechanism, enhancing the stability and safety of the connection. This simplifies the assembly and disassembly process of the mowing device and improves maintenance efficiency.
[0017] Optionally, the tool holder is provided with a limiting mechanism, which includes two limiting members. Both limiting members are disposed on the tool holder and are located on opposite sides of the tool holder. When the tool holder rotates, the side wall of the tool holder will contact the inner side wall of the limiting member. The two limiting members are used to limit the rotation angle of the tool holder.
[0018] Using the above scheme, firstly, the connecting block is securely fixed to the first mounting rod by the action of the first locking mechanism. The two limiting members configured on the blade holder are located on both sides of the connecting block. The two limiting members limit the rotation angle of the blade holder relative to the first mounting rod within the range of 0 to 30 degrees, ensuring the stability of the mowing device during operation and avoiding loss of control or damage due to excessive rotation. When facing changes in slope, the blade holder can make fine adjustments within the limited rotation angle, allowing the mowing device to better adapt to diverse mowing needs. Whether going uphill or downhill, it can maintain high work efficiency and ease of operation.
[0019] Optionally, the top blade holder includes a connector and at least one end plate, the end of the connector being detachably connected to the end plate; a clearance groove is provided on one side of the end plate, and the clearance groove is open on the side facing the edge of the end plate.
[0020] Using the above solution, since the end plate in the related technology has a through hole (round, square, or elliptical), the end plate needs to be disassembled first before the external parts of the end plate can be disassembled. Both the installation and disassembly processes generally take more than 30 minutes or more than 1 hour. However, the end plate in this application has an open side with the through hole. Both the installation and disassembly processes do not require the disassembly of the external parts of the end plate. Only the end plate needs to be disassembled, without the need to disassemble other parts. It generally only takes about 5 minutes, which improves maintenance efficiency.
[0021] Optionally, the mowing device further includes a first mowing mechanism, which includes a mowing motor and a cutting roller. The cutting roller is rotatably mounted on the blade holder, and the mowing motor is detachably connected to the blade holder. The output shaft of the mowing motor is fixedly connected to the end of the cutting roller.
[0022] With the above solution, the first mowing mechanism allows the mowing motor to be detachably connected to the blade holder, and its output shaft to be directly and fixedly connected to the roller blade, driving the roller blade to rotate for mowing operations. This facilitates the maintenance and replacement of the mowing motor, and also ensures that the roller blade receives stable and powerful power, effectively improving mowing efficiency and quality.
[0023] Optionally, the blade holder is provided with a rotary locking device, which includes a linkage and at least one rotary locking component. The linkage is connected to the rotary locking component. The rotary locking component has an arc-shaped locking groove. The lawnmower motor is provided with at least one locking pin. When the rotary locking component rotates, the movement trajectory of the locking groove on the rotary locking component will pass through the locking pin. When the rotary locking component rotates to an appropriate position, the locking pin will fall into the locking groove, thereby fixing the lawnmower motor to the blade holder.
[0024] The above-described scheme utilizes a rotary locking device on the blade holder, where an arc-shaped locking groove on at least one rotary locking component engages with a locking pin on the mower motor. By rotating the locking component, the locking groove's trajectory passes through the locking pin, allowing it to fall into the groove at the appropriate position, thus quickly securing the mower motor. Furthermore, due to the non-standard arc shape of the locking groove, the rotary locking component will not easily rotate once the mower motor is locked, regardless of whether the locking pin is fixed to or rotating on the motor, increasing the stability of the motor's fixation. This simplifies the installation process, provides a robust connection, ensures the stability and safety of the mower motor during high-speed operation, and facilitates disassembly and maintenance.
[0025] Optionally, a battery mechanism is provided on the base, and the battery mechanism is connected to the lawnmower motor via a cable. The cable is covered with a flexible sheath, and a rigid sheath is covered with the flexible sheath. The rigid sheath is detachably connected to the lawnmower motor. The rigid sheath includes two clamping sleeves, the inner walls of which abut against each other, and adjacent clamping sleeves are fixed by bolts and nuts. The lawnmower motor is provided with a support part, and a mounting part is fixedly provided on the clamping sleeve. The lower surface of the mounting part abuts against the upper surface of the support part. The upper surfaces of the two mounting parts located on the same side are provided with clamping blocks, and the lower surfaces of the clamping blocks abut against the upper surfaces of the two mounting parts. Each clamping block is provided with a bolt corresponding to a mounting part, and the bolt passes through the mounting part and is threaded into the support part.
[0026] The aforementioned solutions, which utilize gasoline engines to drive the rotary cutter, are prone to environmental pollution. In contrast, the battery mechanism in this application connects to the lawnmower motor via a cable. The rigid sheath consists of two detachable clamping sleeves, secured to the bearing portion of the lawnmower motor with bolts and nuts. The clamping blocks ensure a stable installation, protecting the cable from damage and preventing bending deformation. This also facilitates installation and maintenance, ensures the stability and safety of power transmission, and improves the overall environmental friendliness of the equipment.
[0027] Optionally, the mowing device further includes a second mowing mechanism, which is detachably connected to the first mowing mechanism and located below it. The second mowing mechanism includes a bottom blade holder and a bottom blade. The bottom blade holder is detachably connected to the blade holder. The bottom blade is disposed on the bottom blade holder, and its upper surface is inclined. The bottom of the roller abuts against the upper surface of the bottom blade. A strip-shaped sharpening groove is formed on the upper surface of the bottom blade, and a sharpening flange is provided on the inner wall of one side of the sharpening groove.
[0028] Using the above scheme, when the mowing motor drives the roller to rotate in the forward direction (mowing direction), the sharp edge of the roller contacts the upper surface of the bottom blade, and the two work together to achieve the mowing function. At this time, the interaction between the roller and the bottom blade is mainly focused on the transmission of shearing force. The inclined upper surface design of the bottom blade helps guide the grass blades smoothly into the shearing area while reducing cutting resistance. When the mowing motor drives the roller to rotate in the opposite direction (sharpening direction), its bottom edge will periodically contact the sharpening flange, which can gradually remove the dulling layer accumulated on the edge of the roller due to long-term use and restore its sharpness. The bottom blade holder and the blade base are detachably connected, and the bottom blade is set on the bottom blade holder, which facilitates the replacement and maintenance of the bottom blade and the bottom blade holder.
[0029] Optionally, the tool holder is provided with a second locking device for fixing the bottom tool post. The second locking device includes a second mounting rod, a second pin, and a second locking mechanism. The second mounting rod is fixed to the machine base, and its two ends abut against the inner sidewalls of two connecting blocks respectively. Each end of the second mounting rod has a second insertion hole, and each connecting block has a through hole. The second pin passes through the through hole and the second insertion hole in sequence to fix the tool holder to the machine base. The second locking mechanism includes a second locking rod and a second elastic element. The second locking rod passes through a first sliding hole on the second mounting rod and slides in cooperation with the first sliding hole. The second elastic element is sleeved on the second locking rod. One end of the second elastic element is fixedly connected to the second locking rod, and the other end of the second elastic element is fixedly connected to the second mounting rod. When the second elastic element is not subjected to external force, the second locking rod abuts against the surface of the first pin under the elastic force of the second elastic element and the first elastic element.
[0030] By employing the above-described solution, a quick and stable connection between the bottom blade holder and the blade holder is achieved using the second mounting rod, the second pin, and the second locking mechanism. The second locking mechanism utilizes the sliding engagement of the second locking rod within the first sliding hole and the elastic force of the second elastic element to effectively fix and release the second pin. Once the second pin is inserted, the second locking rod, pushed by the second elastic element, locks the second pin, securely connecting the bottom blade holder and the blade holder. For disassembly, simply overcome the elastic force of the second elastic element and move the second locking rod to release the second pin, enabling quick disassembly. This simplifies the assembly and disassembly process of the bottom blade holder, improves the stability of the connection and the ease of disassembly, and enhances the maintenance efficiency and operational convenience of the lawnmower.
[0031] Optionally, a control device is also included, which includes a handle, a control mechanism, and a control lever. The handle is detachably connected to the base, the control mechanism is disposed on the handle, and is used to receive operating commands and control the operation of the power unit and mowing device of the lawnmower. The control lever is rotatably connected to the handle.
[0032] The above solution allows for the detachable connection of the handrail to the base of the lawnmower. A control mechanism is installed on the handrail to receive operating commands. A control lever is also provided, with its two ends rotatably connected to the control mechanism and the handrail, respectively. This ensures that the control mechanism receives the start signal only when the operator simultaneously holds the handrail and presses the control lever, thereby controlling the operation of the power unit and the mowing device. This improves operational safety. Furthermore, the adjustable height of the handrail and the reinforced structure of the reinforcing bar enable flexible operation, terrain adaptability, and stability of the lawnmower, effectively improving mowing efficiency and user experience.
[0033] Optionally, the power unit further includes a roller mechanism and a drive mechanism. The roller mechanism is rotatably connected to the base, and the drive mechanism is used to drive the roller mechanism to rotate. The drive mechanism includes a walking motor, and the control device further includes a balancer, which is electrically connected to the walking motor. When the lawnmower is moving or turning, if the tilt angle of the lawnmower is greater than 10°, the balancer can instantly sense the tilt state of the lawnmower and send a corresponding signal to the walking motor to automatically adjust and slow down the forward speed of the lawnmower. When the output shaft speed of the walking motor increases or decreases, the output shaft speed of the lawnmower motor increases or decreases accordingly to ensure that the mowing speed of the mowing device is coordinated with the overall forward speed of the lawnmower.
[0034] Using the above solution, when the lawnmower is moving or turning, and the operator presses the control lever and the handle simultaneously, the handle rotates the base, causing the base to tilt at an angle exceeding 10°. The balancer can quickly detect this and send a signal to the travel motor, automatically adjusting and slowing down the lawnmower's forward speed, effectively improving the lawnmower's stability and safety. When the output shaft speed of the travel motor changes, the output shaft speed of the mowing motor can respond instantly and adjust accordingly, ensuring that the mowing speed of the mowing device remains consistent with the overall forward speed of the lawnmower. Attached Figure Description
[0035] Figure 1 is a schematic diagram of the lawnmower in Embodiment 1 of this application.
[0036] Figure 2 is a schematic diagram of the blade holder, buffer device, and first mowing mechanism in Embodiment 1 of this application.
[0037] Figure 3 is a schematic diagram of the blade holder and the first mowing mechanism in Embodiment 1 of this application.
[0038] Figure 4 is a schematic diagram of the first locking device and the second locking device in Embodiment 1 of this application from another perspective.
[0039] Figure 5 is a cross-sectional view of the first locking device and the second locking device along the AA direction in Embodiment 1 of this application.
[0040] Figure 6 is a schematic diagram of the end plate in Embodiment 1 of this application.
[0041] Figure 7 is a schematic diagram of the lawnmower motor and rotary locking device in Embodiment 1 of this application.
[0042] Figure 8 is a schematic diagram of the second lawnmower mechanism in Embodiment 1 of this application.
[0043] Figure 9 is an enlarged schematic diagram of part A in Figure 8.
[0044] Figure 10 is a schematic diagram of the lawnmower in Embodiment 2 of this application.
[0045] Figure 11 is a schematic diagram of the control device in Embodiment 2 of this application.
[0046] Explanation of reference numerals in the attached drawings: 1. Power unit; 11. Base; 111. Mounting cylinder; 12. Roller mechanism; 121. Rotating shaft; 122. Wheel; 13. Drive mechanism; 2. Mowing device; 21. Blade holder; 211. Top blade holder; 2111. Connecting piece; 2112. End plate; 2113. Ring seat; 2114. Positioning post; 2115. Through hole; 2116. Alternating groove; 22. First mowing mechanism; 221. Mowing motor; 222. Roller blade; 223. Locking post; 224. Bearing part; 23. Second mowing mechanism; 231. Bottom blade holder; 232. Bottom blade; 233. 1. Sharpening groove; 234. Sharpening flange; 24. Limiting mechanism; 241. Limiting element; 3. Control device; 31. Handrail; 311. Grip rod; 312. Connecting rod; 313. Reinforcing rod; 32. Control mechanism; 33. Control rod; 34. Mounting base; 35. Grip handle; 4. First locking device; 41. First mounting rod; 411. First insertion hole; 412. First sliding hole; 413. Assembly groove; 42. First pin; 421. First positioning groove; 43. First locking mechanism; 431. First locking rod; 432. First elastic element; 433. First grip element; 5. Second locking device; 51. Second mounting rod; 511. Second insertion hole; 512. Second sliding hole; 52. Second pin; 521. Second positioning groove; 53. Second locking mechanism; 531. Second locking rod; 532. Second elastic element 533. Second gripper; 6. Rotary locking device; 61. Linkage component; 62. Rotary locking component; 621. Locking seat; 622. Insertion rod; 623. Locking groove; 7. Cable; 71. Flexible sheath; 72. Hard sheath; 721. Clamping sleeve; 722. Mounting part; 73. Clamping block; 8. First connecting device; 81. Connecting rod; 9. Second connecting device; 91. Connecting block; 92. Through hole. Detailed Implementation
[0047] The present application will be described in detail below with reference to Figures 1-11.
[0048] Example 1 This application discloses a lawnmower. Referring to Figure 1, the lawnmower includes a power unit 1, a mowing device 2, and a control unit 3. The control unit 3 is detachably connected to the power unit 1, and the mowing device 2 is detachably connected to the power unit 1.
[0049] The power unit 1 includes a base 11, a roller mechanism 12, and a drive mechanism 13. The roller mechanism 12 includes a rotating shaft 121 and two wheels 122. The rotating shaft 121 passes through the base 11 and is rotatably connected to the base 11. Both ends of the rotating shaft 121 are fixedly connected to the two wheels 122. The drive mechanism 13 is mounted on the base 11 and is used to drive the rotating shaft 121 to rotate, thus driving the lawnmower forward. The drive mechanism includes a travel motor and a transmission assembly. The travel motor is mounted on the base 11 and is used to drive the transmission assembly to operate, thus driving the lawnmower forward.
[0050] Referring to Figures 2 and 3, the lawn mowing device 2 includes a blade holder 21, a first mowing mechanism 22, and a second mowing mechanism 23. The blade holder 21 is detachably connected to the base 11. The first mowing mechanism 22 and the second mowing mechanism 23 are both mounted on the blade holder 21. The mowing function can only be realized through the cooperation of the first mowing mechanism 22 and the second mowing mechanism 23.
[0051] A second connecting device 9 is provided between the first locking device 4 and the tool holder 21, allowing the tool holder 21 to swing back and forth via the second connecting device 9. The second connecting device 9 includes at least one connecting block 91. The tool holder 21 includes a top tool holder 211. There are two connecting blocks, and the bottom ends of both connecting blocks 91 are rotatably connected to the top tool holder 211. The two connecting blocks 91 are parallel to each other, and a through hole 92 is formed on the connecting block 91. An assembly groove 413 is formed on the first mounting rod 41, with one side of the assembly groove 413 being open. When the connecting block 91 is installed in the assembly groove 413, the side wall of the connecting block 91 abuts against the inner side wall of the assembly groove 413. At this time, the axis of the first insertion hole 411 coincides with the axis of the through hole 92, facilitating the quick installation and removal of the first pin 42 by the operator.
[0052] Referring to Figures 3, 5, and 6, to fix the tool holder 21 to the machine base 11, a first locking device 4 for fixing the tool holder 21 is provided on the machine base 11. The first locking device 4 includes a first mounting rod 41, a first pin 42, and a first locking mechanism 43. The first mounting rod 41 is fixed to the machine base 11, and its two ends abut against the inner sidewalls of the two connecting blocks 91, respectively. Each end of the first mounting rod 41 has a first insertion hole 411. Each connecting block 91 has a through-hole relief groove 2116, and the axis of the first insertion hole 411 coincides with the axis of the relief groove 2116. Two mounting slots 413 are provided on the first mounting rod 41 for precisely positioning the connecting blocks 91. The two mounting slots 413 are spaced apart and correspond one-to-one with the two connecting blocks 91. The assembly slot 413 has an opening on one side. When the connecting block 91 is correctly installed into the assembly slot 413, the side wall of the connecting block 91 will tightly abut against the inner side wall of the assembly slot 413, ensuring the stability of the installation.
[0053] Referring to Figure 5, there are two first pins 42 and two first locking mechanisms 43. Each first pin 42 passes through the relief groove 2116 and the first insertion hole 411 in sequence. The end of each first pin 42 abuts against the end of the relief groove 2116, thereby fixing the tool holder 21 to the machine base 11.
[0054] Referring to Figures 3 and 6, the top blade holder 211 includes at least one connector 2111 and at least one end plate 2112. There are two end plates 2112, and both ends of the connector 2111 are detachably connected to the two end plates 2112 respectively. One side of each end plate 2112 has a recessed groove 2116 for the first mowing mechanism 22 to pass through. The recessed groove 2116 is open on the side facing the edge of the end plate 2112. Both the installation and disassembly of the end plate 2112 only require disassembling the end plate 2112; other components do not need to be disassembled. This process typically takes only about 5 minutes, improving disassembly efficiency.
[0055] Referring to Figures 2 and 3, the top blade holder 211 is provided with at least two limiting mechanisms 24. Each limiting mechanism 24 includes two limiting members 241, both of which are fixed to the end plate 2112 by bolts. The two limiting members 241 are located on opposite sides of the connecting block 91. The two limiting members 241 are used to limit the rotation angle of the blade holder 21, ensuring that the rotation angle of the blade holder 21 around the first mounting rod 41 is 0-30°. First, through the action of the first locking mechanism 43, the connecting block 91 is firmly fixed to the first mounting rod 41. The two limiting members 241 configured on the blade holder 21 are located on opposite sides of the connecting block 91, limiting the rotation angle of the blade holder 21 relative to the first mounting rod 41 to within the range of 0 to 30 degrees, ensuring the stability of the mowing device 2 during operation. When facing different slopes, the blade holder 21 can be finely adjusted within the limited rotation angle.
[0056] A first connecting device 8 is provided between the base 11 and the first locking device 4, allowing the first locking device 4 to swing left and right via the first connecting device 8. Each first connecting device 8 includes two connecting rods 81, one end of which is rotatably connected to the base 11, and the other end of which is rotatably connected to the first mounting rod 41. When mowing, if there is a height difference between the mowing surfaces at both ends of the mower, the first connecting device 8 makes the mowing operation more stable and efficient, reducing the bumpy feeling caused by uneven surfaces.
[0057] Referring to Figures 4 and 5, the top of the first mounting rod 41 has two first sliding holes 412, and the first locking mechanism 43 corresponds to each of the first sliding holes 412. Each first locking mechanism 43 includes a first locking rod 431 and a first elastic element 432. The first locking rod 431 passes through the first sliding hole 412 and slides in cooperation with the first sliding hole 412. The first elastic element 432 is sleeved on the first locking rod 431. One end of the first elastic element 432 is fixedly connected to the first locking rod 431, and the other end of the first elastic element 432 is fixedly connected to the first mounting rod 41. Specifically, the first elastic element 432 is a spring. When the first locking rod 431 is not subjected to external force, under the action of the elastic force of the first elastic member 432, the end of the first locking rod 431 facing the first pin 42 abuts against the surface of the first pin 42, thereby fixing the first pin 42 into the first insertion hole 411 of the first mounting rod 41, and fixing the mowing device 2 onto the base 11.
[0058] Each first locking mechanism 43 also includes a first gripping member 433, which is located at the end of the first locking rod 431 away from the first mounting rod 41. The first gripping member 433 is fixedly or movably connected to the first locking rod 431. By pulling the first gripping member 433, the first locking rod 431 is pulled, releasing the first locking rod 431 from its fastening effect on the mowing device 2. This allows workers to manually disassemble and assemble the top blade holder 211 without tools, achieving quick disassembly and assembly and saving working time. The first gripping member 433 is a pull ring or a gripping hole, and the pull ring is fixedly or movably connected to the first locking rod 431.
[0059] Meanwhile, a first positioning groove 421 is provided on the arc-shaped outer wall of the first pin 42. The first positioning groove 421 is annular, and its width is equal to the diameter of the first pin 42. When the first pin 42 is not subjected to external force, the elastic force of the first elastic element 432 drives the end of the first locking rod 431 to abut against the bottom of the first positioning groove 421. The first positioning groove 421 can prevent the first pin 42 from moving axially, increasing the firmness of the tool holder 21 fixed on the machine base 11.
[0060] Referring to Figure 2, the first mowing mechanism 22 includes a mowing motor 221 and a roller 222. The roller 222 is rotatably mounted on the top blade holder 211. The mowing motor 221 is mounted on the top blade holder 211 and is located at one end of the roller 222. The output shaft of the mowing motor 221 is fixedly connected to the end of the roller 222. The mowing motor 221 is used to drive the roller 222 to rotate.
[0061] Referring to Figures 2, 3, and 7, the lawnmower motor 221 is detachably connected to the top blade holder 211. The top blade holder 211 is equipped with a rotary locking device 6 for fixing the lawnmower motor 221. The rotary locking device 6 includes a linkage member 61 and two rotary locking members 62, which are located on opposite sides of the lawnmower motor 221. One end of each rotary locking member 62 is rotatably connected to the blade holder 21, and both ends of the linkage member 61 are detachably connected to the two rotary locking members 62. Alternatively, both ends of the linkage member 61 can be integrally formed with the ends of the two rotary locking members 62.
[0062] Each rotary locking component 62 includes a locking seat 621 and a connecting rod 622. The locking seat 621 is rotatably connected to the knife holder 21, and the end of the connecting rod 622 near the locking seat 621 is integrally formed with the locking seat 621. The linkage component 61 is U-shaped, and both ends of the linkage component 61 have insertion holes. The end of the connecting rod 622 away from the locking seat 621 passes through the insertion hole, and the connecting rod 622 is inserted into the insertion hole to fix the two locking seats 621 to the two ends of the linkage component 61, which increases the convenience for workers to install and disassemble the rotary locking device 6.
[0063] Each locking seat 621 has an arc-shaped locking groove 623 on the side facing the lawn mower motor 221. When the rotating locking member 62 is rotated to a vertical position, the end of the locking groove 623 facing the lawn mower motor 221 is open, facilitating subsequent locking operations. The lawn mower motor 221 has locking posts 223 on opposite sides. The connection between the locking posts 223 and the lawn mower motor 221 can be a fixed connection or a rotatable connection. Both locking pins 223 are rotatably connected to the lawnmower motor 221. During the process of fixing or removing the lawnmower motor 221, the friction between the locking pins 223 and the rotating locking member 62 is reduced, making the operation smoother. At the same time, since the locking groove 623 is a non-standard arc groove, after the rotating locking member 62 locks the lawnmower motor 221, the rotating locking member 62 will not rotate easily, ensuring that the locking pins 223 will not come out of the locking groove 623, thus increasing the firmness of the rotating locking member 62 in fixing the lawnmower motor 221.
[0064] A ring-shaped seat 2113 is fixedly installed on the side of the top blade holder 211 facing the lawn mower motor 221. Two positioning posts 2114 are fixedly installed on the ring-shaped seat 2113. Two positioning holes are correspondingly opened at the end of the lawn mower motor 221, and the positioning posts 2114 correspond one-to-one with the positioning holes. When the lawn mower motor 221 is installed on the top blade holder 211, the positioning posts 2114 are inserted into the positioning holes. The two positioning posts 2114 have a positioning function for the lawn mower motor 221, increasing the firmness of the lawn mower motor 221 installed on the top blade holder 211.
[0065] The top blade holder 211 has a through hole 2115 on the side facing the lawn mower motor 221. When the positioning pin 2114 on the top blade holder 211 is inserted into the positioning hole at the end of the lawn mower motor 221, the output shaft of the lawn mower motor 221 is connected to one end of the roller blade 222. When the lawn mower motor 221 drives the rotating shaft 121 to rotate, it drives the roller blade to rotate.
[0066] Referring to Figures 3, 7, and 8, the second mowing mechanism 23 is detachably connected to the top blade holder 211, and is located below the first mowing mechanism 22. The second mowing mechanism 23 includes a bottom blade holder 231 and a bottom blade 232, wherein the bottom blade holder 231 is detachably connected to the top blade holder 211, and the top blade holder 211 is equipped with a second locking device 5 for fixing the bottom blade holder 231. When the bottom blade holder 231 is fixed to the top blade holder 211, the bottom blade 232 is located directly below the roller blade 222. When the mower moves forward or backward, the roller blade 222 begins to rotate due to the driving action of the mowing motor 221. During the rotation of the roller blade 222, it cooperates with the bottom blade 232 below, enabling the mower to efficiently perform its mowing function.
[0067] The upper surface of the bottom blade 232 is inclined, and the bottom of the roller 222 abuts against the upper surface of the bottom blade 232. A strip-shaped sharpening groove 233 is formed on the upper surface of the bottom blade 232, and a sharpening flange 234 is provided on the inner side wall of one side of the sharpening groove 233. When the mowing motor 221 drives the roller 222 to rotate forward, the roller 222 cooperates with the bottom blade to perform the mowing work. When the mowing motor 221 drives the roller 222 to rotate in reverse, the contact between the bottom blade 232 and the roller 222 achieves the automatic sharpening function. The roller 222 can be kept sharp without disassembling it, which greatly improves the mowing efficiency and maintenance convenience.
[0068] Referring to Figures 4 and 5, the second locking device 5 includes a second mounting rod 51, a second pin 52, and a second locking mechanism 53. The second mounting rod 51 is fixed to the base 11, and its two ends abut against the inner sidewalls of two connecting blocks 91, respectively. Each end of the second mounting rod 51 has a second insertion hole 511, and each connecting block 91 has a through-hole. The axis of the second insertion hole 511 coincides with the axis of the through-hole. There are two second pins 52 and two locking mechanisms 53. Each second pin 52 passes through the through-hole and the second insertion hole 511 in sequence, and the end of each second pin 52 abuts against the end of the through-hole, thereby fixing the tool holder 21 to the base 11.
[0069] Referring to Figures 3, 4, and 5, the top of the second mounting rod 51 has two second sliding holes 512, and the second locking mechanism 53 corresponds to each of the second sliding holes 512. Each second locking mechanism 53 includes a second locking rod 531 and a second elastic element 532. The second locking rod 531 passes through the second sliding hole 512 and slides in cooperation with the second sliding hole 512. The second elastic element 532 is sleeved on the second locking rod 531, with one end of the second elastic element 532 fixedly connected to the second locking rod 531 and the other end of the second elastic element 532 fixedly connected to the second mounting rod 51. Specifically, the second elastic element 532 is a spring. When the second locking rod 531 is not subjected to external force, under the action of the elastic force of the second elastic element 532, the end of the second locking rod 531 facing the second pin 52 abuts against the surface of the second pin 52, thereby fixing the second pin 52 into the second insertion hole 511 of the second mounting rod 51, fixing the blade holder 21 to the base 11, and fixing the mowing device 2 to the base 11, which increases the convenience for workers to install and disassemble the mowing device 2.
[0070] Each second locking mechanism 53 also includes a second gripping member 533, which is disposed at the end of the second locking rod 531 away from the second mounting rod 51. The second gripping member 533 is fixedly or movably connected to the second locking rod 531. By pulling the second gripping member 533, the second locking rod 531 is pulled, releasing the second locking rod 531 from its fastening effect on the mowing device 2. Workers can then manually disassemble and assemble the top blade holder 211 without tools, achieving quick disassembly and assembly and saving working time. Specifically, the second gripping member 533 is a pull ring, which is fixedly or movably connected to the second locking rod 531. Of course, in this embodiment, the second gripping member 533 can also be a gripping hole formed on the second locking rod 531.
[0071] Referring to Figure 5, a second positioning groove 521 is provided on the arc-shaped outer wall of the second pin 52. The second positioning groove 521 is annular. When the second pin 52 is not subjected to external force, the elastic force of the second elastic member 532 drives the end of the second locking rod 531 to abut against the bottom of the second positioning groove 521. The second positioning groove 521 has a positioning function for the second pin 52, which can prevent the second pin 52 from moving axially and increase the firmness of the tool holder 21 fixed on the machine base 11.
[0072] Referring to Figure 7, a battery mechanism is installed on the base 11. A cable 7 is installed between the battery mechanism and the lawnmower motor 221. The end of the cable 7 closest to the battery mechanism is fixedly connected to the battery mechanism, and the end of the cable 7 closest to the lawnmower motor 221 is fixedly connected to the lawnmower motor 221. A flexible sheath 71 is fitted over the end of the cable 7 closest to the lawnmower motor 221, and one end of the flexible sheath 71 is connected to the lawnmower motor 221. A rigid sheath 72 is detachably connected to the lawnmower motor 221, and the end of the flexible sheath 71 closest to the lawnmower motor 221 is located inside the rigid sheath 72. The flexible sheath 71 and the rigid sheath 72 reduce the bending degree of the cable 7 and extend the service life of the cable 7.
[0073] The rigid sheath 72 includes two identical and symmetrical clamping sleeves 721. The inner walls of the two clamping sleeves 721 abut against each other, and adjacent clamping sleeves 721 are fixed by bolts and nuts. The top of the lawnmower motor 221 housing is integrally formed with a support portion 224, the tops of which are both flat. Each clamping sleeve 721 has an integrally formed mounting portion 722 on opposite sides. The inner walls of the two mounting portions 722 abut against each other, and the lower surfaces of both mounting portions 722 abut against the upper surfaces of the support portion 224. Clamping blocks 73 are provided on the upper surfaces of the two mounting portions 722 on the same side, and the lower surfaces of each clamping block 73 abut against the upper surfaces of both mounting portions 722. Two bolts are threaded through each clamping block 73, corresponding one-to-one with the mounting portions 722. The bolts pass through the mounting portions 722 and are threaded into the support portions 224, increasing the ease of installation and removal of the rigid sheath 72 for operators.
[0074] Referring to Figure 1, the control device 3 includes a handle 31. Two parallel mounting cylinders 111 are integrally formed on the side of the base 11 opposite to the mowing device 2. Each mounting cylinder 111 has an open end away from the base 11. The handle 31 includes a gripping rod 311 and two connecting rods 312. Both ends of the gripping rod 311 are fixedly connected to the two connecting rods 312. The connecting rods 312 correspond one-to-one with the mounting cylinders 111, and are inserted into each other to fix the handle 31 to the base 11. The mounting cylinders 111 have multiple through bolt holes along their axial direction, facilitating the installation and removal of the handle 31 and allowing the operator to adjust the height of the handle 31 as needed to accommodate different operating requirements and height differences. The handle 31 also includes a reinforcing rod 313, both ends of which are fixedly connected to the two connecting rods 312, increasing the overall structural strength of the handle 31.
[0075] The control device 3 also includes a control mechanism 32 and a control lever 33. The control mechanism 32 is mounted on one of the connecting levers 312 and is electrically connected to the drive mechanism 13 to facilitate control of the drive mechanism 13's operation. Simultaneously, the control mechanism 32 is electrically connected to the lawnmower motor 221. The control mechanism 32 is responsible for receiving operator commands and controlling the output shaft of the lawnmower motor 221 to rotate forward or backward, thus achieving the functions of mowing or sharpening.
[0076] To ensure operational safety, the control mechanism 32 is also equipped with a control lever 33. One end of the control lever 33 is rotatably connected to the control mechanism 32, and the other end is rotatably connected to the handle 31. During operation, the operator needs to simultaneously hold the control lever 33 and the handle 31, pressing the control lever 33 towards the handle 31 until they make contact. At this point, the control mechanism 32 receives the start signal, thereby controlling the power unit 1 to start, causing the lawnmower to move forward and perform the mowing task. If the operator only holds the handle 31 without pressing the control lever 33, the control mechanism 32 will not receive the start signal, and the lawnmower will remain stopped, effectively preventing safety risks caused by misoperation.
[0077] The control device 3 also includes a balancer, which is mounted on the base 11 and electrically connected to the travel motor. When the lawnmower is moving or turning, if the operator causes the lawnmower to tilt at an angle greater than 10°, the balancer can immediately detect the tilt of the base 11 and send a corresponding signal to the travel motor, automatically adjusting and slowing down the lawnmower's forward speed. Through the integrated intelligent speed regulation and balance control system, the lawnmower achieves automatic coordination between mowing speed and forward speed. During forward movement or turning, when the operator presses the control lever 33 while simultaneously pressing the handle 31, the handle 31 rotates the base 11. When the tilt angle of the base 11 exceeds 10°, the balancer can quickly detect this and send a signal to the travel motor, automatically adjusting and slowing down the lawnmower's forward speed, thus improving the lawnmower's stability and safety.
[0078] When the operator presses control lever 33 and starts the lawnmower, the travel motor begins to work, driving the lawnmower forward. Simultaneously, control mechanism 32 controls the output shaft of the lawnmower motor 221 to rotate forward or backward according to the operator's instructions, achieving the functions of mowing or sharpening. When the output shaft speed of the travel motor increases or decreases, the output shaft speed of the lawnmower motor increases or decreases accordingly under the action of the balancing device, ensuring that the mowing speed of the lawnmower device 2 remains consistent with the overall forward speed of the lawnmower.
[0079] The implementation principle of the above embodiment is as follows: the first pin 42 passes through the through hole 92 of the blade holder 21 and the insertion hole of the first mounting rod 41, and the first locking rod 431 in the first locking mechanism 43 slides in the first sliding hole 412 and is locked by the elastic force of the first elastic element 432, thereby realizing a stable connection between the blade holder 21 and the base 11; during disassembly, the user only needs to move the first locking rod 431 to overcome the elastic force to release the first pin 42, and complete the quick disassembly of the mowing device 2. This process does not require tools, simplifies the operation, and improves the maintenance efficiency and convenience of the locking mechanism.
[0080] Example 2 (Figures 10 and 11) differs from Example 1 in that the control device 3 still includes a handrail 31. The handrail 31 comprises a reinforcing rod 313 and two connecting rods 312. Both ends of the reinforcing rod 313 are fixedly connected to the two connecting rods 312, and the two connecting rods 312 pass through and are fixedly connected to the mounting base 34. A mounting base 34 and a grip handle 35 are also added to the handrail 31, making the handrail 31 more stable.
[0081] Referring to Figures 2 and 10, the control mechanism 32 is located at the end of the mounting base 34, enabling it to easily receive operator commands and precisely control the mowing motor 221 and the drive mechanism 13. Similar to Embodiment 1, the control mechanism 32 is also electrically connected to the drive mechanism 13 and the mowing motor 221, responsible for receiving operator commands and controlling the output shaft of the mowing motor 221 to rotate forward or backward, thus achieving the mowing or sharpening function.
[0082] In this embodiment, the control mechanism 32 is also equipped with a control lever 33. Both ends of the control lever 33 are rotatably connected to the mounting base 34 and electrically connected to the control mechanism 32. During operation, the operator needs to simultaneously hold the control lever 33 and the handle 31, pressing the control lever 33 towards the handle 31 until they make contact. Only then will the control mechanism 32 receive the start signal, thereby controlling the power unit 1 to start, causing the lawnmower to move forward and perform the mowing task. If the operator only holds the handle 31 without pressing the control lever 33, the control mechanism 32 will not receive the start signal, and the lawnmower will remain stopped, effectively preventing safety risks caused by misoperation.
[0083] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A lawnmower, characterized in that: The device includes a power unit (1) and a mowing device (2). The power unit (1) includes a base (11), and the mowing device (2) includes a blade holder (21). The blade holder (21) is detachably connected to the base (11). The base (11) is provided with a first locking device (4) for fixing the blade holder (21). The first locking device (4) includes a first mounting rod (41), a first pin (42), and a first locking mechanism (43). The first mounting rod (41) is disposed on the base (11). The end of the first mounting rod (41) is provided with a first insertion hole (411). The blade holder (21) is provided with a through hole (92). The first pin (42) passes through the through hole (92) and the first insertion hole (411) in sequence. The first locking mechanism (43) is disposed on the first mounting rod (41) and is used to fix the first pin (42).
2. The lawnmower according to claim 1, characterized in that: The first locking mechanism (43) includes a first locking rod (431) and a first elastic element (432). A first sliding hole (412) is provided on the first mounting rod (41), and the axial direction of the first sliding hole (412) is perpendicular to the axial direction of the first insertion hole (411). The first locking rod (431) passes through the first sliding hole (412) and slides in cooperation with the first sliding hole (412). The first elastic element (432) is sleeved on the first locking rod (431). 31) The first elastic element is disposed in the first sliding hole (412); one end of the first elastic element (432) is fixedly connected to the first locking rod (431), and the other end of the first elastic element (432) is fixedly connected to the inner sidewall of the first sliding hole (412); when the first elastic element (432) is not subjected to external force, the first locking rod (431) abuts against the surface of the first pin (42) under the elastic force of the first elastic element (432).
3. The lawnmower according to claim 2, characterized in that: A first positioning groove (421) is provided on the outer side wall of the first pin (42). When the first pin (42) is not subjected to external force, the elastic force of the first elastic member (432) drives the end of the first locking rod (431) to abut against the bottom of the first positioning groove (421).
4. The lawnmower according to claim 1, characterized in that: A first connecting device (8) is provided between the base (11) and the first locking device (4). The first locking device (4) swings left and right through the first connecting device (8). The first connecting device (8) includes at least two connecting rods (81). One end of the connecting rod (81) is rotatably connected to the base (11), and the other end of the connecting rod (81) is rotatably connected to the first mounting rod (41).
5. The lawnmower according to claim 1, characterized in that: A second connecting device (9) is provided between the first locking device (4) and the tool holder (21), and the tool holder (21) can swing in the front and back direction through the second connecting device (9).
6. The lawnmower according to claim 5, characterized in that: The second connecting device (9) includes at least one connecting block (91), the tool holder includes a top tool holder (211), the top tool holder (211) is rotatably connected to the connecting block (91), and the through hole (92) is opened on the connecting block (91); the first mounting rod (41) is provided with an assembly groove (413) for positioning the connecting block (91), and one side of the assembly groove (413) is open; when the connecting block (91) is installed in the assembly groove (413), the side wall of the connecting block (91) abuts against the inner side wall of the assembly groove (413), and the axis of the first insertion hole (411) coincides with the axis of the through hole (92).
7. The lawnmower according to claim 6, characterized in that: The tool holder (21) is provided with a limiting mechanism (24), which includes two limiting members (241). Both limiting members (241) are provided on the tool holder (21) and are located on opposite sides of the connecting block (91). When the tool holder (21) rotates, the side wall of the connecting block (91) will contact the inner side wall of the limiting member (241). The two limiting members (241) are used to limit the rotation angle of the tool holder (21).
8. The lawnmower according to claim 6, characterized in that: The top knife holder (211) includes a connector (2111) and at least one end plate (2112). The end of the connector (2111) is detachably connected to the end plate (2112). A clearance groove (2116) is provided on one side of the end plate (2112), and the clearance groove (2116) is open on the side facing the edge of the end plate (2112).
9. The lawnmower according to claim 1, characterized in that: The mowing device (2) further includes a first mowing mechanism (22), which includes a mowing motor (221) and a roller (222). The roller (222) is rotatably mounted on the blade holder (21), and the mowing motor (221) is detachably connected to the blade holder (21).
10. The lawnmower according to claim 9, characterized in that: The blade holder (21) is provided with a rotary locking device (6), which includes a linkage (61) and at least one rotary locking component (62). The linkage (61) is connected to the rotary locking component (62). The rotary locking component (62) has an arc-shaped locking groove (623). The lawnmower motor (221) is provided with at least one locking pin (223). When the rotary locking component (62) rotates, the movement trajectory of the locking groove (623) on the rotary locking component (62) will pass through the locking pin (223). When the rotary locking component (62) rotates to an appropriate position, the locking pin (223) will fall into the locking groove (623), thereby fixing the lawnmower motor (221) to the blade holder (21).
11. The lawnmower according to claim 9, characterized in that: A battery mechanism is provided on the base (11). The battery mechanism is connected to the lawnmower motor (221) via a cable (7). The cable (7) is covered with a flexible sheath (71), and a rigid sheath (72) is covered with the flexible sheath (71). The rigid sheath (72) is detachably connected to the lawnmower motor (221). The rigid sheath (72) includes two clamping sleeves (721). The inner walls of the two clamping sleeves (721) abut against each other, and adjacent clamping sleeves (721) are fixed by bolts and nuts. The lawnmower motor (221) is... 1) A bearing part (224) is provided on the upper part, and an installation part (722) is fixedly provided on the clamping sleeve (721). The lower surface of the installation part (722) abuts against the upper surface of the bearing part (224). The upper surfaces of the two installation parts (722) located on the same side are provided with clamping blocks (73), and the lower surface of the clamping blocks (73) abuts against the upper surfaces of the two installation parts (722) at the same time. Each clamping block (73) is provided with a bolt corresponding to the installation part (722). The bolt passes through the installation part (722) and is threadedly engaged with the bearing part (224).
12. The lawnmower according to claim 9, characterized in that: The mowing device (2) further includes a second mowing mechanism (23), which is detachably connected to the blade holder (21) and is located below the first mowing mechanism (22). The second mowing mechanism (23) includes a bottom blade holder (231) and a bottom blade (232). The bottom blade holder (231) is detachably connected to the blade holder (21), and the bottom blade (232) is disposed on the bottom blade holder (231). The bottom blade (232) is located below the roller (222), and the upper surface of the bottom blade (232) is inclined. The bottom of the roller (222) abuts against the upper surface of the bottom blade (232). A strip-shaped sharpening groove (233) is provided on the upper surface of the bottom blade (232), and a sharpening flange (234) is provided on the inner wall of one side of the sharpening groove (233).
13. The lawnmower according to claim 12, characterized in that: The tool holder (21) is provided with a second locking device (5) for fixing the bottom tool holder (231). The second locking device (5) includes a second mounting rod (51), a second pin (52), and a second locking mechanism (53). The second mounting rod (51) is fixed on the machine base (11). The two ends of the second mounting rod (51) abut against the inner sidewalls of the two connecting blocks (91) respectively. The two ends of the second mounting rod (51) are provided with second insertion holes (511). The second pin (52) passes through the through hole (92) and the second insertion hole (511) in sequence to fix the tool holder (21) on the machine base (11). The second locking mechanism (53) includes a second locking rod (531) and a second elastic element (532). The second mounting rod (51) is provided with a second sliding hole (51). 2) The axial direction of the second sliding hole (512) is perpendicular to the axial direction of the second insertion hole (511); the second locking rod (531) passes through the second sliding hole (512) and slides in cooperation with the second sliding hole (512); the second elastic member (532) is sleeved on the second locking rod (531) and is disposed in the second sliding hole (512); one end of the second elastic member (532) is fixedly connected to the second locking rod (531), and the other end of the second elastic member (532) is fixedly connected to the second mounting rod (51); when the second elastic member (532) is not subjected to external force, the second locking rod (531) abuts against the surface of the first pin (42) under the elastic force of the second elastic member (532).
14. The lawnmower according to claim 9, characterized in that: It also includes a control device (3), which includes a handrail (31), a control mechanism (32) and a control lever (33). The handrail (31) is detachably connected to the base (11). The control mechanism (32) is mounted on the handrail (31) and is used to receive operation commands and control the operation of the power unit (1) and the mowing device (2) of the lawnmower. The control lever (33) is rotatably connected to the handrail (31).
15. The lawnmower according to claim 14, characterized in that: The power unit (1) also includes a roller mechanism (12) and a drive mechanism (13). The roller mechanism (12) is rotatably connected to the base (11), and the drive mechanism (13) is used to drive the roller mechanism (12) to rotate. The drive mechanism (13) includes a walking motor, and the control device (3) also includes a balancer. The balancer is electrically connected to the walking motor. When the lawnmower is moving or turning, if the tilt angle of the lawnmower is greater than 10°, the balancer can instantly sense the tilt state of the lawnmower and send a corresponding signal to the walking motor to automatically adjust and slow down the forward speed of the lawnmower. When the output shaft speed of the walking motor increases or decreases, the output shaft speed of the lawnmower motor (221) increases or decreases accordingly to ensure that the mowing speed of the mowing device (2) is coordinated with the overall forward speed of the lawnmower.