Lawn mower

Abstract

To provide a lawnmower that improves maintenance efficiency and convenience. [Solution] The lawnmower comprises a power unit and a lawnmower 2, the power unit including a machine seat 11 and the lawnmower including a blade seat 21. The blade seat is detachably connected to the machine seat. The machine seat is provided with a first locking device 4 for fixing the blade seat, the first locking device including a first mounting rod 41, a first pin and a first locking mechanism. The first mounting rod is provided on the machine seat and its end abuts against the side wall of the blade seat. A first through hole is formed at the end of the first mounting rod and a relief groove is formed through the blade seat. The first pin is positioned to sequentially pass through the relief groove and the first through hole. The first locking mechanism is provided on the first mounting rod and fixes the first pin.

Description

Technical Field

[0001] This application relates to the technical field of lawn mowing devices, and particularly to lawn mowers.

Background Art

[0002] As a core tool in garden maintenance management, lawn mowers play an important role in fields such as lawn mowing and garden landscape maintenance management. However, with the progress of technology and the increasing requirements of users for the performance of lawn mowers, further improvements are required in terms of operability, lawn mowing efficiency, and use safety, and continuous evolution aimed at improving these aspects has been carried out.

[0003] Many of the conventional lawn mowers rely on bolts to fix various devices, mechanisms, or parts. Therefore, when it is necessary to remove a specific device, mechanism, or part individually, the operator has to perform disassembly work using tools every time, which not only increases the time cost of searching for tools but also increases the work process. Furthermore, these devices, mechanisms, or parts are usually fixed by multiple bolts, and the number of bolts is also large, so both the assembly and disassembly operations are cumbersome and time-consuming. Specifically, at least 5 minutes or more are required for one assembly or disassembly operation, and it may take 30 minutes or more when the structure is complex. As a result, there is a problem that the maintenance work efficiency of the lawn mower decreases.

Summary of the Invention

[0004] In order to improve the maintenance efficiency and convenience of lawn mowers, this application provides a lawn mower that can solve the above-mentioned conventional problems. A lawnmower comprising a power unit and a lawnmower, wherein the power unit includes a machine seat, the lawnmower includes a blade seat, and the blade seat is detachably connected to the machine seat. The machine seat is provided with a first locking device for fixing the blade seat, the first locking device includes a first mounting rod, a first pin, and a first locking mechanism, the first mounting rod is provided on the machine seat, a first insertion hole is formed at the end of the first mounting rod, a through hole is formed in the blade seat, the first pin passes through the through hole and the first insertion hole in sequence, and the first locking mechanism is provided on the first mounting rod and fixes the first pin.

[0005] According to the above configuration, during operation, the first pin passes through the through hole formed in the blade seat and the first insertion hole formed in the first mounting rod, and is then fixed by the first locking mechanism, enabling quick attachment and detachment of the blade seat and the machine seat, and realizing quick assembly and disassembly of the lawnmower and power unit. In this application, the first pin is used as an alternative to the conventional bolt fixing method, allowing the cutting device to be removed manually without using tools such as wrenches, and improving the maintenance efficiency of the lawnmower by reducing the use of tools.

[0006] Preferably, the first locking mechanism includes a first locking rod and a first elastic member, the first mounting rod having a first slide hole formed therein, the axial direction of the first slide hole being perpendicular to the axial direction of the first insertion hole. The first locking rod is inserted into the first slide hole and slidably fitted with the first slide hole, and the first elastic member is fitted onto the first locking rod and positioned inside the first slide hole. One end of the first elastic member is fixed to the first locking rod and the other end is fixed to the inner wall of the first slide hole, and when the first elastic member is not subjected to external force, the first locking rod abuts against the surface of the first pin due to the elastic force of the first elastic member.

[0007] According to the above configuration, the first locking rod slides within the first slide hole and, in cooperation with the elastic force of the first elastic member, can securely fix and release the first pin. When the first pin is inserted to the predetermined position, the first locking rod locks the first pin in place by the biasing force of the first elastic member, preventing it from falling out and thus stabilizing the connection between the blade seat and the machine seat. If it is necessary to release the connection between the blade seat and the machine seat, the user can release the first pin simply by moving the first locking rod against the elastic force of the first elastic member, and this operation is usually completed within 0 to 5 seconds.

[0008] Preferably, a first positioning groove is formed on the outer wall of the first pin, and when the first pin is not subjected to external force, the end of the first lock rod abuts against the bottom of the first positioning groove due to the elastic force of the first elastic member.

[0009] According to the above configuration, the first positioning groove formed in the first pin and the end of the first locking rod engage with each other, and the elastic force of the first elastic member causes the end of the first locking rod to stably contact the bottom of the groove of the first positioning groove, thereby securely locking the first pin. This improves the stability of the connection, prevents the first pin from unexpectedly falling out due to vibration or external force, ensures a reliable connection between the blade seat and the machine seat, and improves the safety and durability of the lawnmower.

[0010] Preferably, a first coupling device is provided between the machine seat and the first locking device, and the first locking device is pivotable in the left-right direction by the first coupling device. The first coupling device includes at least two link rods, one end of each link rod being rotatably connected to the machine seat and the other end being rotatably connected to the first mounting rod.

[0011] According to the above configuration, even if there is a difference in elevation or slope in the lateral direction of the ground when the lawnmower is moving forward, the blade seat can be finely adjusted within the limited range of rotation angle. This fine adjustment function allows the lawnmower to better adapt to a variety of mowing conditions, and enables high work efficiency and operability to be maintained whether on uphill or downhill slopes. The first coupling device consists of at least two link rods, and when there is a difference in elevation or slope in the lateral direction of the ground while the lawnmower is moving forward, the first locking device is able to swing within a predetermined range relative to the machine seat, thereby maintaining stable contact between the lawnmower and the ground and reducing the effect of terrain changes on the running stability of the lawnmower.

[0012] Preferably, a second connecting device is provided between the first locking device and the blade seat, and the blade seat is pivotable in the front-rear direction by the second connecting device.

[0013] With the above configuration, even when faced with changes in slope, the blade seat can be finely adjusted within a limited range of rotation angle, allowing the lawnmower to better adapt to various mowing conditions and maintain high work efficiency and operability whether mowing uphill or downhill.

[0014] Preferably, the second connecting device includes at least one connecting block, the blade seat includes an upper blade holder, the upper blade holder is rotatably connected to the connecting block, and the through hole is formed in the connecting block. The first mounting rod has an assembly groove for positioning the connecting block, one side of the assembly groove is open, and when the connecting block is mounted in the assembly groove, the side wall of the connecting block abuts against the inner wall of the assembly groove, and the axis of the first insertion hole coincides with the axis of the through hole.

[0015] With the above configuration, since one side of the assembly groove is open, the connecting block can be quickly aligned and inserted. When the connecting block is fully fitted into the assembly groove, its side wall comes into close contact with the inner wall of the assembly groove, ensuring a secure connection between the blade seat and the machine seat. Furthermore, the first pin passes through the through hole and the first insertion hole and is securely locked by the first elastic locking mechanism, further improving the stability and safety of the connection. As a result, the assembly and disassembly processes of the lawnmower are simplified, and maintenance efficiency is improved.

[0016] Preferably, the blade seat is provided with a stopper mechanism, the stopper mechanism includes two stopper members, both of which are provided on the blade seat and are arranged on opposite sides of the blade seat, so that when the blade seat rotates, the side walls of the blade seat abut against the inner walls of the stopper members, and the two stopper members limit the rotation angle of the blade seat.

[0017] According to the above configuration, first, the connecting block is securely fixed to the first mounting rod by the action of the first locking mechanism, and the two stopper members provided on the blade seat are positioned on both sides of the connecting block. These two stopper members limit the angle in which the blade seat can rotate relative to the first mounting rod to a range of 0 to 30 degrees, ensuring the stability of the lawnmower during operation and preventing malfunctions or damage due to excessive rotation. Furthermore, even when faced with changes in slope, the blade seat can be finely adjusted within the limited range of rotation angle, allowing the lawnmower to better adapt to various mowing conditions and maintain high work efficiency and operability in both uphill and downhill situations.

[0018] Preferably, the upper blade holder includes a connecting member and at least one end plate, the end of which is detachably connected to the end plate. A relief groove is formed on one side of the end plate, and the relief groove opens toward the edge side of the end plate.

[0019] In conventional technology, through holes such as circular, square, or elliptical holes are formed in the end plate, and when removing the end plate, it is not possible to remove the end plate without first removing the parts located on the outside of the end plate. Therefore, both the assembly and removal processes usually take more than 30 minutes, and in some cases more than an hour. In contrast, with the end plate according to this application, since one side of the through hole is open, it is not necessary to remove the parts on the outside of the end plate when assembling or removing the end plate, and only the end plate needs to be removed. Since there is no need to disassemble other parts, the work time is usually only about 5 minutes, and maintenance efficiency is greatly improved.

[0020] Preferably, the lawnmower further includes a first mowing mechanism, the first mowing mechanism includes a mowing motor and a rotating blade, the rotating blade is rotatably mounted on the blade seat, the mowing motor is detachably connected to the blade seat, and the output shaft of the mowing motor is fixedly connected to the end of the rotating blade.

[0021] According to the above configuration, the first mowing mechanism detachably connects the mowing motor to the blade seat, and its output shaft is directly fixed to the rotating blade, thereby driving the rotating blade and performing the mowing operation. This makes maintenance and replacement of the mowing motor easy, and provides stable and sufficient driving force to the rotating blade, effectively improving mowing efficiency and mowing quality.

[0022] Preferably, the blade seat is provided with a rotation locking device, the rotation locking device includes an interlocking member and at least one rotation locking member, the interlocking member being connected to the rotation locking member. The rotation locking member has an arc-shaped lock groove formed therein, and the lawn mowing motor is provided with at least one lock pin. When the rotation locking member rotates, the movement trajectory of the lock groove formed in the rotation locking member passes through the lock pin, and when the rotation locking member rotates to a predetermined position, the lock pin engages with the lock groove, fixing the lawn mowing motor to the blade seat.

[0023] According to the above configuration, the rotation locking device provided on the blade seat works in cooperation with an arc-shaped lock groove formed in at least one rotation locking member and a lock pin provided on the lawnmower motor. By rotating the rotation locking member, the movement trajectory of the lock groove passes through the lock pin, and the lock pin engages with the lock groove at a predetermined position, thereby enabling the lawnmower motor to be quickly fixed. Furthermore, because the lock groove has a non-standard arc shape, even when the lock pin is fixed to the lawnmower motor, or when it rotates together with the lawnmower motor, the rotation locking member does not easily rotate after the lawnmower motor is fixed, improving the holding force that fixes the lawnmower motor. As a result, the installation process of the lawnmower motor is simplified, a robust connection is ensured, the stability and safety of the lawnmower motor at high speeds are ensured, and the removal and maintenance of the lawnmower motor are also made easier.

[0024] Preferably, the machine seat is provided with a battery mechanism, the battery mechanism and the lawnmower motor are connected by a cable, the outer circumference of the cable is covered with a flexible sheath, the outer circumference of the flexible sheath is covered with a rigid sheath, and the rigid sheath is detachably connected to the lawnmower motor. The rigid sheath includes two fastening sleeves, the inner walls of the two fastening sleeves abut against each other, and adjacent fastening sleeves are fixed together with bolts and nuts, the lawnmower motor is provided with a support, the fastening sleeves are fixedly provided with mounting portions, the lower surface of the mounting portion abuts against the upper surface of the support, fastening blocks are provided on the upper surfaces of the two mounting portions located on the same side, the lower surfaces of the fastening blocks abut simultaneously against the upper surfaces of the two mounting portions, a bolt corresponding to the mounting portion is inserted through each fastening block, the bolt passes through the mounting portion and is screw-connected to the support.

[0025] According to the above configuration, conventional technology uses a gasoline engine to rotate the blades, which presents a problem as it easily leads to environmental pollution.

[0026] In contrast, in the present application, the battery mechanism is connected to the lawn mowing motor by a cable, and the rigid sheath is composed of two detachable fastening sleeves, which are fixed to the support part of the lawn mowing motor by bolts and nuts and firmly held by a fastening block, thereby protecting the cable from damage and preventing excessive bending and deformation of the cable. This makes installation and maintenance easier, ensures the stability and safety of power transmission, and improves the environmental compatibility of the entire device.

[0027] Preferably, the lawn mowing device further includes a second lawn mowing mechanism, the second lawn mowing mechanism is detachably connected to the blade seat, and the second lawn mowing mechanism is disposed below the first lawn mowing mechanism. The second lawn mowing mechanism includes a bottom blade holder and a bottom blade, the bottom blade holder is detachably connected to the blade seat, the bottom blade is provided on the bottom blade holder, the upper surface of the bottom blade is formed in an inclined shape, and the lower surface of the rotary blade abuts against the upper surface of the bottom blade. A strip-shaped grinding groove is formed on the upper surface of the bottom blade, and a grinding flange is provided on the inner wall of one side of the grinding groove.

[0028] According to the above configuration, when the lawn mowing motor rotationally drives the rotary blade in the forward direction (lawn mowing direction), the sharp blade edge of the rotary blade contacts the upper surface of the bottom blade, and the lawn mowing function is realized by the cooperation of the two. At this time, the interaction between the rotary blade and the bottom blade mainly focuses on the transmission of shear force, and the inclined upper surface shape of the bottom blade guides the grass blades smoothly into the shearing area and contributes to reducing the cutting resistance. On the other hand, when the lawn mowing motor rotationally drives the rotary blade in the reverse direction (grinding direction), the lower edge of the rotary blade periodically abuts against the grinding flange, and the passivation layer accumulated on the blade edge due to long-term use is gradually removed, and the sharpness of the blade tip is restored. Since the bottom blade holder is detachably connected to the blade seat and the bottom blade is provided on the bottom blade holder, it is easy to replace and maintain the bottom blade and the bottom blade holder.

[0029] Preferably, a second locking device for fixing the bottom blade holder is provided on the blade seat. 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. Both ends of the second mounting rod abut against the inner walls of two connecting blocks respectively. Second insertion holes are formed at both ends of the second mounting rod respectively, and through holes penetrating through are formed in each connecting block. The second pin sequentially penetrates through the through hole and the second insertion hole to fix the blade seat to the machine base. The second locking mechanism includes a second locking rod and a second elastic member. The second locking rod is inserted into a second slide hole formed in the second mounting rod and is slidably fitted with the second slide hole. The second elastic member is externally fitted on the second locking rod. One end of the second elastic member is fixed to the second locking rod, and the other end is fixed to the second mounting rod. In a state where the second elastic member is not subjected to an external force, the second locking rod abuts against the surface of the second pin by the second elastic member and the elastic force of the second elastic member.

[0030] According to the above configuration, by using the second mounting rod, the second pin, and the second locking mechanism, a quick and reliable connection between the bottom blade holder and the blade seat is realized. The second locking mechanism enables reliable fixing and release of the second pin by the sliding of the second locking rod in the second slide hole and the elastic force of the second elastic member. When the second pin is inserted to a predetermined position, the second locking rod locks the second pin by the biasing force of the second elastic member, and the connection between the bottom blade holder and the blade seat is stably maintained. When removal is required, the second pin can be released only by moving the second locking rod against the elastic force of the second elastic member, enabling quick disassembly. Thereby, the assembly and disassembly process of the bottom blade holder is simplified, the connection stability and the ease of removal are improved, and the maintenance efficiency and the operability of the lawn mower are improved.

[0031] Preferably, the system further includes a control device, the control device including a handle, a control mechanism and an operating lever, the handle being detachably connected to the machine seat, the control mechanism being provided on the handle to receive operation commands and control the operation of the lawnmower's power unit and mowing device, and the operating lever being rotatably connected to the handle.

[0032] According to the above configuration, the handle is detachably connected to the machine seat of the lawnmower, a control mechanism for receiving operation commands is provided on the handle, and an operating lever is also provided. Both ends of the operating lever are rotatably connected to the control mechanism and the handle, respectively. This configuration ensures that the control mechanism receives a start signal and controls the operation of the power unit and lawnmower only when the operator grips the handle and presses the operating lever, thereby improving operational safety. Furthermore, the handle height adjustment function and structural reinforcement with reinforcing rods improve the operability, adaptability to terrain, and stability of the lawnmower, effectively enhancing lawnmowering efficiency and operability.

[0033] Preferably, the power unit further includes a wheel mechanism and a drive mechanism, the wheel mechanism being rotatably connected to the machine seat, and the drive mechanism rotationally driving the wheel mechanism. The drive mechanism includes a travel motor, and the control device further includes a tilt sensor, the tilt sensor being electrically connected to the travel motor, and when the tilt angle of the lawnmower exceeds 10 degrees while the lawnmower is traveling or turning, the tilt sensor immediately detects the tilt state of the lawnmower and transmits a signal corresponding to the travel motor to automatically adjust and reduce the forward speed of the lawnmower. When the rotational speed of the output shaft of the travel motor increases or decreases, the rotational speed of the output shaft of the lawnmower motor increases or decreases accordingly, so that the mowing speed of the lawnmower and the overall forward speed of the lawnmower coordinately match.

[0034] With the above configuration, when the operator presses the operating lever while gripping the handle while the lawnmower is moving or turning, the movement of the handle causes the machine seat to rotate and tilt. If the tilt angle exceeds 10 degrees, the tilt sensor quickly detects this and sends a signal to the travel motor, which automatically controls and reduces the forward speed, thereby effectively improving the stability and safety of the lawnmower. In addition, if the rotational speed of the output shaft of the travel motor changes, the rotational speed of the output shaft of the lawnmower motor is immediately adjusted in conjunction, so that the mowing speed of the lawnmower and the forward speed of the entire lawnmower are always maintained in coordination and match. [Brief explanation of the drawing]

[0035] [Figure 1] This is a schematic diagram of a lawnmower according to Embodiment 1 of this application. [Figure 2] This is a schematic diagram of the blade seat, shock absorber, and first lawn mowing mechanism according to Embodiment 1 of this application. [Figure 3] This is a schematic diagram of the blade mount and the first lawn mowing mechanism according to Embodiment 1 of this application. [Figure 4] This is a schematic diagram showing the first locking device and the second locking device according to Embodiment 1 of this application from a different viewpoint. [Figure 5] This is a cross-sectional view of the first locking device and the second locking device according to Embodiment 1 of this application, taken along the A-A direction. [Figure 6] This is a schematic diagram of the end plate according to Embodiment 1 of this application. [Figure 7] This is a schematic diagram of a lawnmower motor and rotation locking device according to Embodiment 1 of this application. [Figure 8] This is a schematic diagram of the second lawn mowing mechanism according to Embodiment 1 of this application. [Figure 9] Figure 8 is an enlarged schematic diagram of section A. [Figure 10] This is a schematic diagram of a lawnmower according to Embodiment 2 of this application. [Figure 11] This is a schematic diagram of the control device according to Embodiment 2 of this application. [Modes for carrying out the invention]

[0036] The present application will be described in detail below with reference to Figures 1 to 11. [Examples]

[0037] The embodiments of this application disclose a lawnmower. Referring to Figure 1, the lawnmower includes a power unit 1, a mowing device 2, and a control device 3. Here, the control device 3 is detachably connected to the power unit 1, and the mowing device 2 is also detachably connected to the power unit 1.

[0038] The power unit 1 includes a machine seat 11, a wheel mechanism 12, and a drive mechanism 13. The wheel mechanism 12 includes a rotating shaft 121 and two wheels 122. The rotating shaft 121 passes through the machine seat 11 and is rotatably connected to the machine seat 11, and both ends of the rotating shaft 121 are fixedly connected to the two wheels 122. The drive mechanism 13 is provided on the machine seat 11 and moves the lawnmower forward by rotationally driving the rotating shaft 121. The drive mechanism 13 includes a travel motor and a transmission member, the travel motor is provided on the machine seat 11 and the travel motor drives the transmission member to move the lawnmower forward.

[0039] Referring to Figures 2 and 3, the lawn mowing device 2 includes a blade seat 21, a first mowing mechanism 22, and a second mowing mechanism 23. The blade seat 21 is detachably connected to the machine seat 11, and both the first mowing mechanism 22 and the second mowing mechanism 23 are provided on the blade seat 21. The lawn mowing function is achieved through the cooperation of the first mowing mechanism 22 and the second mowing mechanism 23.

[0040] A second connecting device 9 is provided between the first locking device 4 and the blade seat 21, and the blade seat 21 is pivotable in the front-rear direction by the second connecting device 9. The second connecting device 9 includes at least one connecting block 91, and in this embodiment there are two connecting blocks 91. The blade seat 21 includes an upper blade holder 211, and the lower ends of both connecting blocks 91 are rotatably connected to the upper blade holder 211. The two connecting blocks 91 are arranged parallel to each other, and a through hole 92 is formed in each connecting block 91. An assembly groove 413 is formed in the first mounting rod 41, and one side of the assembly groove 413 is open. When the connecting block 91 is mounted in the assembly groove 413, the side wall of the connecting block 91 abuts against the inner wall of the assembly groove 413, and at this time the axis of the first insertion hole 411 coincides with the axis of the through hole 92, so that the operator can quickly assemble and detach the first pin 42.

[0041] Referring to Figures 2, 3, 5, and 6, the machine seat 11 is provided with a first locking device 4 for fixing the blade seat 21 to the machine seat 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 seat 11, and both ends of it abut against the inner walls of two connecting blocks 91, with first through holes 411 formed at each end of the first mounting rod 41. Each connecting block 91 has a through hole 92 through it, and the axis of the first through hole 411 coincides with the axis of the through hole 92. The first mounting rod 41 has two assembly grooves 413 formed therein for precisely positioning the connecting blocks 91. The two assembly grooves 413 are spaced apart and correspond to the two connecting blocks 91, respectively. One side of the assembly groove 413 is open, and when the connecting block 91 is correctly installed in the assembly groove 413, the side wall of the connecting block 91 comes into close contact with the inner wall of the assembly groove 413, ensuring stability in the assembled state.

[0042] Referring to Figure 5, there are two first pins 42 and two first locking mechanisms 43. Each first pin 42 passes through the through hole 92 and the first insertion hole 411 in sequence, and the end of each first pin 42 abuts against the end of the through hole 92, thereby fixing the blade seat 21 to the machine seat 11.

[0043] Referring to Figures 3 and 6, the upper blade holder 211 includes at least one connecting member 2111 and at least one end plate 2112. In this embodiment, two end plates 2112 are provided, and both ends of the connecting member 2111 are detachably connected to the two end plates 2112. A relief groove 2116 is formed on one side of the end plate 2112 for the first lawn mowing mechanism 22 to pass through, and the relief groove 2116 opens toward the edge of the end plate 2112. Therefore, in both the installation and removal of the end plate 2112, it is sufficient to remove only the end plate 2112, and there is no need to disassemble other parts, so the work time is usually about 5 minutes, improving disassembly efficiency.

[0044] Referring to Figures 2 and 3, the upper blade holder 211 is provided with at least two stopper mechanisms 24, each stopper mechanism 24 including two stopper members 241, both of which are fixed to the end plate 2112 by bolts and are positioned on opposite sides of the connecting block 91. These two stopper members 241 limit the rotation angle of the blade seat 21, restricting the rotation angle of the blade seat 21 around the first mounting rod 41 to a range of 0 to 30 degrees. First, the first locking mechanism 43 securely fixes the connecting block 91 to the first mounting rod 41, and the two stopper members 241 provided on the blade seat 21 are positioned on both sides of the connecting block 91. This limits the angle at which the blade seat 21 can rotate relative to the first mounting rod 41 to a range of 0 to 30 degrees, thereby ensuring the stability of the lawn mowing device 2 during operation, and also allowing the blade seat 21 to be finely adjusted within the limited rotation angle even under different inclination conditions.

[0045] Referring to Figure 2, a first coupling device 8 is provided between the machine seat 11 and the first locking device 4, and the first locking device 4 is pivotable in the left-right direction by the first coupling device 8. Each first coupling device 8 includes two link rods 81, one end of which is rotatably connected to the machine seat 11, and the other end of which is rotatably connected to the first mounting rod 41. Even when there is a difference in the height of the road surface on the left and right sides of the lawnmower during lawn mowing, the action of the first coupling device 8 makes lawn mowing more stable and efficient, and reduces vibrations caused by uneven road surfaces.

[0046] Referring to Figures 4 and 5, two first slide holes 412 are formed in the upper part of the first mounting rod 41, and the first locking mechanism 43 is provided corresponding to each of these first slide holes 412. Each first locking mechanism 43 includes a first locking rod 431 and a first elastic member 432, the first locking rod 431 being inserted into the first slide holes 412 and slidably fitted with the first slide holes 412, the first elastic member 432 being fitted onto the first locking rod 431 with one end fixed to the first locking rod 431 and the other end fixed to the first mounting rod 41. The first elastic member 432 is specifically a spring. When the first lock rod 431 is not subjected to external force, the first lock rod 431 is biased toward the first pin 42 by the elastic force of the first elastic member 432, and its end comes into contact with 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 thereby fixing the lawn mowing device 2 to the machine seat 11.

[0047] Each first locking mechanism 43 further includes a first gripping member 433, which is provided at the end of the first locking rod 431 that is away from the first mounting rod 41, and is fixedly or movably connected to the first locking rod 431. By pulling the first gripping member 433, the operator can move the first locking rod 431 and release the fastening of the lawn mowing device 2 by the first locking rod 431, allowing the upper blade holder 211 to be manually attached and detached without the use of tools, thereby reducing 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.

[0048] Furthermore, a first positioning groove 421 is formed on the arc-shaped outer wall of the first pin 42. The first positioning groove 421 is annular in shape, and its width is the same as the diameter of the first pin 42. When the first pin 42 is not subjected to external force, the end of the first lock rod 431 abuts against the bottom of the first positioning groove 421 due to the elastic force of the first elastic member 432. The first positioning groove 421 prevents axial movement of the first pin 42, further enhancing the reliability of the connection that fixes the blade seat 21 to the machine seat 11.

[0049] Referring to Figure 2, the first lawn mowing mechanism 22 includes a mowing motor 221 and a rotating blade 222, the rotating blade 222 being rotatably mounted on an upper blade holder 211, the mowing motor 221 being attached to the upper blade holder 211, the mowing motor 221 being positioned on one end of the rotating blade 222, the output shaft of the mowing motor 221 being fixedly connected to the end of the rotating blade 222, and the mowing motor 221 rotationally driving the rotating blade 222.

[0050] Referring to Figures 2, 3, and 7, the lawnmower motor 221 is detachably connected to the upper blade holder 211, and the upper blade holder 211 is provided with a rotation locking device 6 for fixing the lawnmower motor 221. The rotation locking device 6 includes an interlocking member 61 and two rotation locking members 62, the two rotation locking members 62 being located on both sides of the lawnmower motor 221. One end of each rotation locking member 62 is rotatably connected to the blade seat 21, and both ends of the interlocking member 61 are detachably connected to the two rotation locking members 62. Note that both ends of the interlocking member 61 may be integrally molded with the ends of the two rotation locking members 62.

[0051] Each rotating locking member 62 includes a lock base 621 and an insertion rod 622. The lock base 621 is rotatably connected to the blade seat 21, and one end of the insertion rod 622 that is close to the lock base 621 is integrally molded with the lock base 621. The interlocking member 61 is U-shaped, with insertion holes formed at both ends. The end of the insertion rod 622 that is away from the lock base 621 is inserted into the insertion hole, and the insertion rod 622 and the insertion hole are fitted together, fixing the two lock bases 621 to both ends of the interlocking member 61, improving the ease of assembly and disassembly of the rotating locking device 6.

[0052] An arc-shaped lock groove 623 is formed on the surface of each lock base 621 facing the lawnmower motor 221. When the rotating lock member 62 rotates vertically, the lock groove 623 opens toward the lawnmower motor 221, facilitating subsequent locking operations. Lock pins 223 are provided on each of the opposing sides of the lawnmower motor 221. The lock pins 223 can be connected to the lawnmower motor 221 in either a fixed or rotatable manner. In this embodiment, both lock pins 223 are rotatably connected to the lawnmower motor 221, reducing friction between the lock pins 223 and the rotating lock member 62 when fixing or removing the lawnmower motor 221, resulting in smoother operation. Furthermore, because the lock groove 623 has a non-standard arc shape, after the lawnmower motor 221 is locked by the rotation lock member 62, the rotation lock member 62 does not easily rotate, preventing the lock pin 223 from detaching from the lock groove 623, and improving the fixing and holding force of the lawnmower motor 221.

[0053] An annular seat 2113 is fixed to the upper blade holder 211 on the side facing the mowing motor 221, and two positioning pins 2114 are fixed to the annular seat 2113. Two corresponding positioning holes are formed at the end of the mowing motor 221, and the positioning pins 2114 correspond to the positioning holes. When the mowing motor 221 is attached to the upper blade holder 211, the positioning pins 2114 are inserted and fitted into the positioning holes. The two positioning pins 2114 position the mowing motor 221, improving the stability of the mowing motor 221 when it is attached to the upper blade holder 211.

[0054] A through hole 2115 is formed on the side of the upper blade holder 211 facing the lawnmower motor 221. When the positioning pin 2114 of the upper blade holder 211 is inserted into the positioning hole at the end of the lawnmower motor 221, the output shaft of the lawnmower motor 221 is fitted into one end of the rotating blade 222, and the rotating blade 222 rotates smoothly when driven by the lawnmower motor 221.

[0055] Referring to Figures 3, 7, and 8, the second mowing mechanism 23 is detachably connected to the upper 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, the bottom blade holder 231 being detachably connected to the upper blade holder 211, and the upper blade holder 211 is provided with a second locking device 5 for fixing the bottom blade holder 231. When the bottom blade holder 231 is fixed to the upper blade holder 211, the bottom blade 232 is located directly below the rotating blade 222, and as the mower moves forward or backward, the rotating blade 222 starts to rotate due to the drive of the mowing motor 221. During the rotation of the rotating blade 222, the rotating blade 222 cooperates with the bottom blade 232 below it, and the mower achieves a highly efficient mowing function.

[0056] The upper surface of the bottom blade 232 is formed at an angle, and the lower surface of the rotating blade 222 is in contact with the upper surface of the bottom blade 232. A strip-shaped polishing groove 233 is formed on the upper surface of the bottom blade 232, and a polishing flange 234 is provided on the inner wall of one side of the polishing groove 233. When the lawnmower motor 221 rotates the rotating blade 222 in the forward direction, the rotating blade 222 works in cooperation with the bottom blade 232 to perform lawn mowing. On the other hand, when the lawnmower motor 221 rotates the rotating blade 222 in the reverse direction, an automatic polishing function is realized by the contact between the bottom blade 232 and the rotating blade 222, and the sharpness of the blade tip can be maintained without removing the rotating blade 222, greatly improving lawn mowing efficiency and maintainability.

[0057] 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 machine seat 11, and both ends of the second mounting rod 51 abut against the inner walls of two connecting blocks 91. Second insertion holes 511 are formed at both ends of the second mounting rod 51, and through holes 92 are formed through each connecting block 91, with the axis of the second insertion hole 511 coinciding with the axis of the through hole 92. There are two second pins 52 and two second locking mechanisms 53, and 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 92, thereby fixing the blade seat 21 to the machine seat 11.

[0058] Referring to Figures 3, 4, and 5, two second slide holes 512 are formed in the upper part of the second mounting rod 51, and the second locking mechanism 53 is provided corresponding to each of these second slide holes 512. Each second locking mechanism 53 includes a second locking rod 531 and a second elastic member 532, the second locking rod 531 is inserted into the second slide holes 512 and slidably fitted with the second slide holes 512, the second elastic member 532 is fitted onto the second locking rod 531, one end of the second elastic member 532 is fixed to the second locking rod 531 and the other end is fixed to the second mounting rod 51. The second elastic member 532 is specifically a spring. When the second lock rod 531 is not subjected to external force, the second lock rod 531 is biased toward the second pin 52 by the elastic force of the second elastic member 532, and its end comes into contact with the surface of the second pin 52, thereby fixing the second pin 52 within the second insertion hole 511 of the second mounting rod 51. This fixes the blade seat 21 to the machine seat 11, and as a result the lawn mowing device 2 is fixed to the machine seat 11, improving the convenience of attaching and detaching the lawn mowing device 2.

[0059] Each second locking mechanism 53 further includes a second gripping member 533, which is provided at the end of the second locking rod 531 that is away from the second mounting rod 51, and is fixedly or movably connected to the second locking rod 531. By pulling the second gripping member 533, the operator can move the second locking rod 531 and release the fastening of the lawn mowing device 2 by the second locking rod 531, allowing the upper blade holder 211 to be manually attached and detached without the use of tools, thereby reducing working time. Specifically, the second gripping member 533 is a pull ring, which is fixedly or movably connected to the second locking rod 531. In this embodiment, the second gripping member 533 may be a gripping hole formed in the second locking rod 531.

[0060] Referring to Figure 5, a second positioning groove 521 is formed on the arc-shaped outer wall of the second pin 52, and the second positioning groove 521 is annular in shape. When the second pin 52 is not subjected to external force, the end of the second lock rod 531 abuts against the bottom of the second positioning groove 521 due to the elastic force of the second elastic member 532, and the second positioning groove 521 prevents axial movement of the second pin 52, improving the reliability of the connection that fixes the blade seat 21 to the machine seat 11.

[0061] Referring to Figure 7, the machine seat 11 is equipped with a battery mechanism, and a cable 7 is provided between the battery mechanism and the lawnmower motor 221. The battery mechanism side end of the cable 7 is fixedly connected to the battery mechanism, and the lawnmower motor 221 side end of the cable 7 is fixedly connected to the lawnmower motor 221. The outer circumference of the lawnmower motor 221 side end of the cable 7 is covered with a flexible sheath 71, 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 lawnmower motor 221 side end of the flexible sheath 71 is located inside the rigid sheath 72. The flexible sheath 71 and rigid sheath 72 suppress excessive bending of the cable 7, extending the service life of the cable 7.

[0062] The rigid sheath 72 includes two fastening sleeves 721 of the same structure, arranged symmetrically, the inner walls of the two fastening sleeves 721 in contact with each other, and adjacent fastening sleeves 721 are fixed together by bolts and nuts. A support portion 224 is integrally molded on the upper part of the housing of the lawnmower motor 221, and the upper surfaces of the support portion 224 are all flat. Mounting portions 722 are integrally molded on both opposing sides of each fastening sleeve 721, the inner walls of the two mounting portions 722 in contact with each other, and the lower surfaces of the two mounting portions 722 both in contact with the upper surface of the support portion 224. Fastening blocks 73 are provided on the upper surfaces of the two mounting portions 722 located on the same side, and the lower surface of each fastening block 73 simultaneously in contact with the upper surfaces of the two mounting portions 722. Two bolts are inserted through each fastening block 73, and the bolts are positioned corresponding to the mounting portion 722. Each bolt passes through the mounting portion 722 and is screw-connected to the support portion 224, thereby improving the convenience of attaching and detaching the rigid sheath 72.

[0063] Referring to Figure 1, the control device 3 includes a handle 31, and on the side of the machine seat 11 opposite the lawn mowing device 2, two parallel mounting cylinders 111 are integrally molded, with the end of each mounting cylinder 111 away from the machine seat 11 being open. The handle 31 includes a gripping rod 311 and two connecting rods 312, with both ends of the gripping rod 311 fixedly connected to the two connecting rods 312. The connecting rods 312 correspond to the mounting cylinders 111 respectively, and the handle 31 is fixed to the machine seat 11 by inserting and fitting the connecting rods 312 into the mounting cylinders 111. Furthermore, the mounting cylinders 111 have multiple through bolt holes formed along their axial direction, which facilitate the attachment and detachment of the handle 31, and allow the operator to adjust the height of the handle 31 as needed to accommodate different operating conditions and height differences. The handle 31 further includes a reinforcing rod 313, the ends of which are fixedly connected to two connecting rods 312, thereby improving the overall structural strength of the handle 31.

[0064] The control device 3 further includes a control mechanism 32 and an operating lever 33. The control mechanism 32 is mounted on one of the connecting rods 312 and is electrically connected to the drive mechanism 13, controlling the operation of the drive mechanism 13. The control mechanism 32 is also electrically connected to the lawnmower motor 221 and receives operator commands to rotate the output shaft of the lawnmower motor 221 in the forward or reverse direction, thereby realizing lawn mowing or grinding functions.

[0065] To ensure safety during operation, the control mechanism 32 is equipped with an operating lever 33. One end of the operating 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 must grasp both the operating lever 33 and the handle 31, and press the operating lever 33 toward the handle 31 to bring them into contact. Only in this state does the control mechanism 32 receive a start signal, activate the power unit 1 to move the lawnmower forward, and perform the lawn mowing operation. If the operator grasps only the handle 31 and does not press the operating lever 33, the control mechanism 32 will not receive a start signal, and the lawnmower will remain stopped, effectively preventing safety risks due to incorrect operation.

[0066] The control device 3 further includes a tilt sensor, which is mounted on the machine seat 11 and electrically connected to the travel motor. When the lawnmower is traveling or turning, if the tilt angle of the lawnmower exceeds 10 degrees due to operator operation, the tilt sensor immediately detects the tilt state of the machine seat 11 and transmits a corresponding signal to the travel motor, thereby automatically controlling and reducing the forward speed of the lawnmower. The lawnmower achieves automatic coordinated control of mowing speed and forward speed by integrating an intelligent speed control and balance control system. When the lawnmower is moving forward or turning, if the operator presses the operating lever 33 and operates the handle 31, the movement of the handle 31 causes the machine seat 11 to rotate and tilt. If the tilt angle exceeds 10 degrees, the tilt sensor quickly detects this and transmits a signal to the travel motor, which automatically controls and reduces the forward speed. This improves the stability and safety of the lawnmower and enhances work efficiency and quality.

[0067] When the operator presses the operating lever 33 to start the lawnmower, the travel motor activates and moves the lawnmower forward. Simultaneously, the control mechanism 32 rotates the output shaft of the mowing motor 221 in the forward or reverse direction based on the operator's command to perform the mowing or grinding function. When the rotational speed of the output shaft of the travel motor increases or decreases, the tilt sensor causes the rotational speed of the output shaft of the mowing motor 221 to increase or decrease accordingly, so that the mowing speed of the mowing device 2 and the forward speed of the entire lawnmower are maintained in coordination. In other words, even if the rotational speed of the output shaft of the travel motor changes, the rotational speed of the output shaft of the mowing motor 221 is immediately adjusted to follow suit, so that the mowing speed of the mowing device 2 and the forward speed of the entire lawnmower are always kept in sync.

[0068] The operating principle of the above embodiment is as follows: The first pin 42 passes through the through hole 92 of the blade seat 21 and the first insertion hole 411 of the first mounting rod 41, and the first lock rod 431 included in the first lock mechanism 43 slides within the first slide hole 412, locking the first pin 42 with the elastic force of the first elastic member 432, thereby securely connecting the blade seat 21 and the machine seat 11. When removing, the operator can release the first pin 42 simply by moving the first lock rod 431 to resist the elastic force, and the lawnmower 2 can be quickly removed. This process does not require tools, simplifying operation and improving maintenance efficiency and convenience. Example 2

[0069] Referring to Figures 10 and 11, Embodiment 2 is characterized in that the control device 3 differs from that of Embodiment 1. The control device 3 in this embodiment also includes a handle 31, which includes a reinforcing rod 313 and two connecting rods 312, with both ends of the reinforcing rod 313 fixedly connected to the two connecting rods 312, and the two connecting rods 312 passing through a mounting seat 34 and being fixedly connected to the mounting seat 34. The handle 31 is further provided with an additional mounting seat 34 and a gripping handle 35. This further improves the fixing rigidity of the handle 31.

[0070] Referring to Figures 2 and 10, the control mechanism 32 is located at the end of the mounting base 34, allowing for easy reception of operator commands and enabling high-precision control of the lawnmower motor 221 and the drive mechanism 13. Similar to Embodiment 1, the control mechanism 32 is electrically connected to the drive mechanism 13 and the lawnmower motor 221, and by receiving operator commands and rotating the output shaft of the lawnmower motor 221 in the forward or reverse direction, it realizes lawnmowing or grinding functions.

[0071] The control mechanism 32 in this embodiment is also provided with an operating lever 33. Both ends of the operating lever 33 are rotatably connected to the mounting base 34 and electrically connected to the control mechanism 32. During operation, the operator must grasp both the operating lever 33 and the handle 31 and press the operating lever 33 toward the handle 31 to bring them into contact. Only when the operator performs the predetermined operation does the control mechanism 32 receive a start signal, the power unit 1 is activated, the lawnmower moves forward, and the lawnmowering operation is performed. If the operator grasps only the handle 31 and does not press the operating lever 33, the control mechanism 32 cannot receive a start signal, and the lawnmower remains stopped, effectively preventing safety risks due to incorrect operation.

[0072] The foregoing are merely preferred embodiments of the present application and do not limit the scope of protection of this application. Equivalent modifications based on the configuration, shape and principle of this application shall all be included within the scope of protection of this application. [Explanation of Symbols]

[0073] 1 Power plant 11 seats 111 Mounting tube 12 Wheel mechanism 121 Rotation axis 122 Wheels 13. Drive mechanism 2 Lawn mowing device 21 Blade seat 211 Upper blade holder 2111 Connecting member 2112 End plate 2113 Ring Seat 2114 Positioning pin 2115 Through hole 2116 Escape ditch 22. First Lawn Mowing Mechanism 221 Lawn Mower Motor 222 Rotary blades 223 Locking Pin 224 Support part 23. Second Lawn Mowing Mechanism 231 Bottom cutting edge holder 232 Bottom blade 233 Polishing Groove 234 Polished flange 24 Stopper mechanism 241 Stopper component 3. Control device 31 Handle 311 Grip Rod 312 Connecting Rod 313 Reinforcement rod 32 Control mechanism 33 Operating levers 34 Mounting base 35 Gripping handle 4. First locking device 41. First mounting rod 411 First insertion hole 412 First slide hole 413 Assembly groove 42. Pin 1 421 First positioning groove 43. First locking mechanism 431 First Rock Rod 432 First Elastic Member 433 First gripping member 5. Second locking device 51 Second mounting rod 511 Second insertion hole 512 Second slide hole 52 Pin 2 521 Second positioning groove 53 Second locking mechanism 531 Second Rock Rod 532 Second Elastic Member 533 Second gripping member 6. Rotation locking device 61 Interlocking member 62 Rotating locking member 621 Rock Bass 622 Insertion Rod 623 Lock groove 7 Cables 71 Flexible Sheath 72. Hard Sheath 721 Fastening Sleeve 722 Mounting part 73 Fastening Block 8 First coupling device 81 Link Rod 9 Second coupling device 91 Connecting Blocks 92 Through hole

Claims

1. A lawnmower comprising a power unit and a lawnmower, wherein the power unit includes a machine seat, the lawnmower includes a blade seat, the blade seat is detachably connected to the machine seat, the machine seat is provided with a first locking device for fixing the blade seat, the first locking device includes a first mounting rod, a first pin and a first locking mechanism, the first mounting rod is provided on the machine seat, a first insertion hole is formed at the end of the first mounting rod, a through hole is formed in the blade seat, the first pin passes through the through hole and the first insertion hole in sequence, and the first locking mechanism is provided on the first mounting rod and fixes the first pin.

2. The lawnmower according to claim 1, characterized in that the first locking mechanism includes a first locking rod and a first elastic member, the first mounting rod has a first slide hole formed therein, the axial direction of the first slide hole is perpendicular to the axial direction of the first insertion hole, the first locking rod is inserted into the first slide hole and slidably fitted with the first slide hole, the first elastic member is fitted onto the first locking rod and positioned inside the first slide hole, one end of the first elastic member is fixed to the first locking rod and the other end is fixed to the inner wall of the first slide hole, and when the first elastic member is not subjected to an external force, the first locking rod contacts the surface of the first pin by the elastic force of the first elastic member.

3. The lawnmower according to claim 2, characterized in that a first positioning groove is formed on the outer wall of the first pin, and when the first pin is not subjected to an external force, the end of the first lock rod abuts against the bottom of the first positioning groove due to the elastic force of the first elastic member.

4. The lawnmower according to claim 1, wherein a first coupling device is provided between the machine seat and the first locking device, the first locking device is pivotable in the left-right direction by the first coupling device, the first coupling device includes at least two link rods, one end of each link rod is rotatably connected to the machine seat and the other end is rotatably connected to the first mounting rod.

5. The lawnmower according to claim 1, wherein a second connecting device is provided between the first locking device and the blade seat, and the blade seat is pivotable in the front-rear direction by the second connecting device.

6. The lawnmower according to claim 5, characterized in that the second coupling device includes at least one coupling block, the blade seat includes an upper blade holder, the upper blade holder is rotatably coupled to the coupling block, the through hole is formed in the coupling block, the first mounting rod has an assembly groove for positioning the coupling block, one side of the assembly groove is open, when the coupling block is mounted in the assembly groove, the side wall of the coupling block abuts against the inner wall of the assembly groove, and the axis of the first insertion hole coincides with the axis of the through hole.

7. The lawnmower according to claim 6, wherein the blade seat is provided with a stopper mechanism, the stopper mechanism includes two stopper members, both of which are provided on the blade seat and are arranged on opposite sides of the connecting block, and when the blade seat rotates, the side wall of the connecting block abuts against the inner wall of the stopper member, and the two stopper members limit the rotation angle of the blade seat.

8. A lawnmower according to claim 6, wherein the upper blade holder includes a connecting member and at least one end plate, the end of the connecting member is detachably connected to the end plate, a relief groove is formed on one side of the end plate, and the relief groove opens toward the edge side of the end plate.

9. The lawnmower according to claim 1, further comprising a first lawnmower mechanism, the first lawnmower mechanism comprising a lawnmower motor and a rotating blade, the rotating blade being rotatably mounted on the blade seat, and the lawnmower motor being detachably connected to the blade seat.

10. The lawnmower according to claim 9, wherein the blade seat is provided with a rotation locking device, the rotation locking device includes an interlocking member and at least one rotation locking member, the interlocking member is connected to the rotation locking member, an arc-shaped lock groove is formed in the rotation locking member, the lawnmower motor is provided with at least one lock pin, and when the rotation locking member rotates, the movement trajectory of the lock groove passes through the lock pin, and when the rotation locking member rotates to a predetermined position, the lock pin engages with the lock groove, thereby fixing the lawnmower motor to the blade seat.

11. The lawnmower according to claim 9, wherein the machine seat is provided with a battery mechanism, the battery mechanism and the lawnmower motor are connected by a cable, the outer circumference of the cable is covered with a flexible sheath, the outer circumference of the flexible sheath is covered with a rigid sheath, the rigid sheath is detachably connected to the lawnmower motor, the rigid sheath includes two fastening sleeves, the inner walls of the two fastening sleeves abut against each other, adjacent fastening sleeves are fixed together with bolts and nuts, the lawnmower motor is provided with a support, the fastening sleeves are fixedly provided with mounting parts, the lower surface of the mounting parts abuts against the upper surface of the support, fastening blocks are provided on the upper surfaces of two mounting parts located on the same side, the lower surfaces of the fastening blocks abut simultaneously against the upper surfaces of the two mounting parts, each fastening block has a bolt inserted through it corresponding to the mounting part, and the bolts pass through the mounting part and are screw-connected to the support.

12. The lawnmower according to claim 9, further comprising a second lawnmower mechanism, the second lawnmower mechanism being detachably connected to the blade seat, the second lawnmower mechanism being positioned below the first lawnmower mechanism, the second lawnmower mechanism comprising a bottom blade holder and a bottom blade, the bottom blade holder being detachably connected to the blade seat, the bottom blade being provided on the bottom blade holder, the bottom blade being positioned below the rotating blade, the upper surface of the bottom blade being formed at an inclination, the lower surface of the rotating blade contacting the upper surface of the bottom blade, the upper surface of the bottom blade having a strip-shaped grinding groove, and a grinding flange being provided on the inner wall of one side of the grinding groove.

13. The blade seat is provided with a second locking device for fixing the bottom blade holder, 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 seat and both ends of the second mounting rod abut against the inner walls of two connecting blocks, a second through hole is formed at both ends of the second mounting rod, the second pin passes through the through hole and the second through hole in sequence and fixes the blade seat to the machine seat, the second locking mechanism includes a second locking rod and a second elastic member and the second mounting rod has a second slide hole formed therein The lawnmower according to claim 12, wherein the axial direction of the second slide hole is perpendicular to the axial direction of the second insertion hole, the second lock rod is inserted into the second slide hole and slidably fitted with the second slide hole, the second elastic member is fitted onto the second lock rod and positioned inside the second slide hole, one end of the second elastic member is fixed to the second lock rod, and the other end of the second elastic member is fixed to the second mounting rod, and when the second elastic member is not subjected to an external force, the second lock rod contacts the surface of the first pin due to the elastic force of the second elastic member.

14. The lawnmower according to claim 9, further comprising a control device, the control device comprising a handle, a control mechanism and an operating lever, the handle being detachably connected to the machine seat, the control mechanism being provided on the handle and receiving operation commands to control the operation of the power unit and mowing device of the lawnmower, and the operating lever being rotatably connected to the handle.

15. The power unit further includes a wheel mechanism and a drive mechanism, the wheel mechanism is rotatably connected to the machine seat, the drive mechanism is configured to rotationally drive the wheel mechanism, the drive mechanism includes a travel motor, the control device further includes a tilt sensor, the tilt sensor is electrically connected to the travel motor, and when the lawnmower is traveling or turning, if the tilt angle of the lawnmower exceeds 10 degrees, the tilt sensor immediately detects the tilt state of the lawnmower and transmits a signal corresponding to the travel motor to automatically adjust and reduce the forward speed of the lawnmower, and when the rotation speed of the output shaft of the travel motor increases or decreases, the rotation speed of the output shaft of the lawnmower motor increases or decreases accordingly, and the lawnmower cutting speed of the lawnmower and the forward speed of the entire lawnmower are coordinately matched, characterized in that the lawnmower cutting speed and the forward speed of the lawnmower are matched.

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