Self-propelled mower

Abstract

The utility model discloses a self-propelled mower which comprises a rack, a mowing device, an advancing device and a driving device, the driving device comprises a driving piece and a transmission mechanism, and the transmission mechanism comprises a gear unit and a belt pulley unit; the gear unit is in driving connection with an output shaft of the driving part; the belt pulley unit is in driving connection with a power shaft of the rotary cutter; the belt wheel unit comprises a first belt wheel, a second belt wheel and a balance wheel, the first belt wheel and the second belt wheel are in transmission connection through a first synchronous belt, and the balance wheel is located between the first belt wheel and the second belt wheel, abuts against the outer side of the first synchronous belt and pushes the first edge of the first synchronous belt inwards towards the second edge of the first synchronous belt; the balance wheel is assembled on a swing rod and can swing relative to the first belt wheel and the second belt wheel, a tension spring is assembled on the swing rod, and the tension spring provides trend force for the balance wheel to abut against the first synchronous belt all the time. The utility model has the advantages of strong self-adaptive ability and high operation efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of lawn mowers, and in particular relates to a self-propelled lawn mower. Background Art

[0002] A lawn mower is a mechanical tool used to mow the lawn. Its form is quite diverse, but most of the lawn mowers used in general households are self-propelled lawn mowers. This type of lawn mower generally has a frame, a rotating cutter facing the ground is arranged below the frame, a traveling wheel is arranged at the front of the frame, and a driving wheel is arranged at the rear. When in use, the power device is started to make the rotating cutter rotate rapidly, and the traveling wheel and the driving wheel touch the ground. The user holds the push rod and pushes the lawn mower to move forward, thereby mowing the lawn along the way. In existing lawn mowers, the driving part mostly directly outputs power by fixing the output shaft to the blade. The installation is relatively convenient and the power output is direct. However, there are the following disadvantages in the actual use process: when the blade hits a hard object or a large amount of debris is entangled on the blade, the blade will be stuck, which will directly affect the power output of the driving part and affect the continuity of the entire mowing operation. It is usually necessary to shut down and restart, which affects the operation efficiency. In serious cases, it will also cause damage to the driving part. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a self-propelled lawn mower driving device, which can significantly reduce the influence of blade jam on the power output of the driving member when the blade is stuck, thereby ensuring the efficiency of the lawn mowing operation and avoiding damage to the driving device.

[0004] The utility model object of the utility model is achieved through the following technical solutions:

[0005] A self-propelled lawn mower comprises a frame, a lawn mowing device, a traveling device and a driving device, wherein the driving device comprises a driving member and a transmission mechanism, wherein the transmission mechanism comprises a gear unit and a pulley unit; the gear unit is drivingly connected to the output shaft of the driving member, and the pulley unit is drivingly connected to the power shaft of a rotating cutter; the pulley unit comprises a first pulley, a second pulley and a balance wheel, the first pulley and the second pulley are connected by a first synchronous belt transmission, the balance wheel is located between the first pulley and the second pulley, and is pressed against the outer side of the first synchronous belt to push the first side of the first synchronous belt inward toward the second side; the balance wheel is mounted on a swing rod and can swing relative to the first pulley and the second pulley, and a tension spring is mounted on the swing rod, and the tension spring provides a tendency force for the balance wheel to always press against the first synchronous belt.

[0006] Preferably, the output shaft of the driving member is arranged in the horizontal direction, the power shaft of the rotary cutter is arranged in the vertical direction, the gear unit includes a first gear and a second gear that are meshed with each other, and the first gear and the second gear are both bevel gears; the gear unit transmits the power provided by the driving member to the pulley unit through a transmission shaft, the transmission shaft is arranged in the vertical direction, the first gear is fixedly connected to the output shaft of the driving member, the second gear is fixedly arranged at the upper end of the transmission shaft; the first pulley is fixedly arranged at the lower end of the transmission shaft.

[0007] Preferably, the cutting device comprises a rotary cutter, a power shaft of the rotary cutter is rotatably mounted on a mounting disk, and the second pulley is fixedly sleeved on the power shaft and is located below the mounting disk.

[0008] Preferably, the pendulum rod comprises a rotating end and an assembly end which are arranged opposite to each other, the rotating end is rotatably assembled on the assembly disk, and the balance wheel is suspended below the assembly end; one end of the tension spring is hooked on the assembly end, and the other end is hooked on the frame.

[0009] Preferably, the central axis of the balance wheel is parallel to the central axes of the first pulley and the second pulley, and the balance wheel is arranged close to the first pulley.

[0010] Preferably, the frame includes a cover shell buckled above the rotary cutter, the cover shell defines a mowing chamber for the rotary cutter to rotate; a first grass row opening connected to the mowing chamber is opened on the side of the cover shell, and a second grass row opening connected to the mowing chamber is opened at the rear of the cover shell.

[0011] Preferably, a first flap is hinged on the cover shell through a hinge shaft, and the first flap can flip back and forth between its closed position and open position. When the first flap is in the closed position, it covers the first row of grass openings, and when the first flap is in the open position, the first row of grass openings are connected to the outside.

[0012] Preferably, when the first flap is in the open position, a slot plate is detachably mounted on the cover shell, the slot plate is aligned with the first row of grass openings, and supports the first flap to keep the first flap in the open position, with the slot plate extending outward and the slot opening downward.

[0013] Preferably, the groove plate includes a U-shaped plate and an extension plate formed at the end of the U-shaped plate, the extension plate is overlapped on the cover shell, and a hook is formed on the extension plate to hook to the hinge shaft.

[0014] Preferably, a first torsion spring is installed between the first flip cover and the cover shell, and the first torsion spring provides a tendency force for the first flip cover to remain in a closed position.

[0015] Preferably, the frame also includes an assembly frame installed at the rear of the cover shell, the assembly frame is provided with a grass guide port connected to the second row of grass ports, and the assembly frame is hinged with a second flip cover, the second flip cover can be flipped back and forth between its closed position and open position, when the second flip cover is in the closed position, it covers the grass guide port, and when the second flip cover is in the open position, the grass guide port is connected to the outside.

[0016] Preferably, when the second flip cover is in the open position, a grass collecting bucket is detachably mounted on the assembly frame and supports the second flip cover so that the second flip cover remains in the open position, and the grass inlet of the grass collecting bucket is connected to the grass guide port.

[0017] Preferably, a second torsion spring is installed between the second flip cover and the assembly frame, and the second torsion spring provides a tendency force for the second flip cover to remain in the closed position.

[0018] Preferably, the assembly frame includes a forward tilting plate inclined toward the cover shell, and side wing plates located on both sides of the forward tilting plate, the grass guide port is opened on the forward tilting plate, and a boss misaligned with the grass guide port is also protruded on the forward tilting plate.

[0019] Preferably, the grass collecting bucket includes a flexible bag and a support frame supported on the outer edge of the flexible bag, the support frame includes a supporting rod supported on the outer edge of the tilting plate, and hanging rods are symmetrically provided on both sides of the supporting rod; the connecting position between the tilting plate and the two side wing plates is formed with a slot for embedding the hanging rod.

[0020] Preferably, the traveling device includes a driving wheel located behind the cover shell, and a traveling wheel located in front of the cover shell, and the pulley unit also includes a third pulley connected to the driving shaft of the driving wheel, and the third pulley is connected to the first pulley through a second synchronous belt transmission.

[0021] Compared with the prior art, the utility model has the following beneficial effects: by setting the balance wheel, the tension of the first synchronous belt can be adjusted in real time, eliminating the influence of the second pulley on the first pulley; when encountering a hard object during the operation process, the transmission mechanism can automatically protect itself to avoid damage to the components; after passing over the hard object, the transmission mechanism can automatically resume normal operation, with strong self-adaptation ability, the entire operation process is coherent and smooth, there will be no jamming, no frequent shutdown and restart, and high operation efficiency; through the cooperation of the gear unit and the pulley unit, cross transmission can be achieved, making the layout of the entire drive device more reasonable and compact, and can The output torque can be adjusted by adjusting the gear ratio and wheel diameter ratio to improve working efficiency; the driving wheel and the rotary cutter share a power source. By optimizing the structure of the transmission mechanism, when the rotary cutter encounters a hard object, the transmission mechanism can automatically protect itself and resume normal operation by itself, eliminating the influence of the running resistance of the rotary cutter on the driving wheel, and the driving wheel can always maintain stable movement; two grass discharge ports are arranged on the cover, and side grass discharge and rear grass discharge can be selected according to needs, and the structure of the grass discharge accessories is reasonably arranged, which can achieve functional coordination with the inherent structure of the lawn mower, without the need to use additional fasteners, and is convenient for disassembly and assembly, and convenient for switching grass discharge modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model from another angle;

[0024] Figure 3 This is a schematic diagram of the structure of the driving device in the utility model;

[0025] Figure 4 This is a schematic diagram of the transmission mechanism structure in the utility model;

[0026] Figure 5 This is a schematic diagram of the bottom structure of the cover shell in the utility model;

[0027] Figure 6 This is a schematic diagram of the assembly structure of the middle slot plate of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the middle slot plate of the utility model;

[0029] Figure 8 This is a schematic diagram of the assembly structure of the grass collecting bucket in the utility model;

[0030] Fig. 9 This is a schematic diagram of the support frame structure in the utility model;

[0031] Markings in the figure: first gear 11; second gear 12; transmission shaft 13; first pulley 14; second pulley 15; third pulley 16; balance wheel 171; anti-slip edge; swing rod 172; first synchronous belt 18; second synchronous belt 19; engine 20; output shaft 21; power shaft 31; assembly disk 32; rotary cutter 33; driving wheel 41; traveling wheel 42; cover shell 51; first row grass opening 511; second row grass opening 512; first flap 52; hinge shaft 53; groove plate 54; U-shaped plate 541; extension plate 542; hook 543; assembly frame 55; forward tilting plate 551; grass guide opening 5511; boss 5512; side wing plate 552; slot 553; protective shell 56; second flap 57; grass collecting bucket 60; flexible bag 61; support frame 62; abutment rod 621; hanging rod 622; handrail 70. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0033] like Figure 1-Figure 4 As shown, this embodiment discloses a self-propelled lawn mower, which includes a frame, a mowing device, a traveling device and a driving device.

[0034] The driving device includes a driving member and a transmission mechanism. In this embodiment, the driving member is an engine 20, and the transmission mechanism includes a gear unit and a pulley unit. The gear unit is connected to the output shaft 21 of the engine 20, and the pulley unit is connected to the power shaft 31 of the rotary cutter 33. The gear unit transmits the power provided by the driving member to the pulley unit through a transmission shaft 13; the pulley unit includes a first pulley 14, a second pulley 15 and a swing wheel 171, the first pulley 14 and the second pulley 15 are connected through a first synchronous belt 18, the swing wheel 171 is located between the first pulley 14 and the second pulley 15, and is pressed against the outside of the first synchronous belt 18 to push the first side of the first synchronous belt 18 inward toward the second side; the swing wheel 171 is mounted on a swing rod 172, and can swing relative to the first pulley 14 and the second pulley 15, and a tension spring is mounted on the swing rod 172, and the tension spring provides a tendency force for the swing wheel 171 to always press against the first synchronous belt 18. By setting the balance wheel 171, the tension of the first synchronous belt 18 can be adjusted in real time. When the rotary cutter 33 encounters a hard object and causes the second pulley 15 to get stuck, the balance wheel 171 will swing to adjust the tension of the first synchronous belt 18 to avoid the second pulley 15 from affecting the first pulley 14. Except for the second pulley 15, other components of the drive device can operate normally, and the lawn mower can still operate normally. When the rotary cutter 33 passes over the hard object, the running resistance of the second pulley 15 disappears. Under the action of the balance wheel 171, the tension of the first synchronous belt 18 is restored, and the second pulley 15 resumes normal operation under the drive of the first pulley 14. When encountering a hard object during the operation process, the transmission mechanism can protect itself to avoid damage to the components, and after passing over the hard object, the transmission mechanism can resume normal operation by itself, with strong adaptability, and the entire operation process is continuous and smooth without jamming, and the operation efficiency is high.

[0035] The output shaft 21 of the engine 20 is arranged horizontally, the power shaft 31 of the rotary cutter 33 is arranged vertically, the gear unit includes a first gear 11 and a second gear 12 meshing with each other, and the first gear 11 and the second gear 12 are both bevel gears; the transmission shaft 13 is arranged vertically, the first gear 11 is fixedly connected to the output shaft 21 of the driving member, the second gear 12 is fixedly arranged at the upper end of the transmission shaft 13; the first pulley 14 is fixedly arranged at the lower end of the transmission shaft 13. Through the cooperation of the gear unit and the pulley unit, cross transmission can be realized, making the layout of the entire drive device more reasonable and compact, and the output torque can be adjusted by adjusting the gear ratio and the wheel diameter ratio, which is energy-saving and efficient.

[0036] The cutting device includes a rotating cutter 33, the power shaft 31 of the rotating cutter 33 is rotatably mounted on the mounting disk 32, the second pulley 15 is fixedly mounted on the power shaft 31 and is located below the mounting disk 32; the swing rod 172 includes a rotating end and a mounting end that are relatively arranged, the rotating end is rotatably mounted on the mounting disk 32, the pendulum 171 is rotatably suspended below the mounting end, one end of the tension spring is hooked on the mounting end, and the other end is hooked on the frame. The above layout can make full use of the assembly space and make the structure of the entire lawn mower more compact; the central axis of the pendulum 171 is parallel to the central axis of the first pulley 14 and the second pulley 15, and the pendulum 171 is arranged close to the first pulley 14. The above arrangement can increase the swing torque of the pendulum 171 and reduce its swing resistance, so as to respond more sensitively to the jamming of the second pulley 15.

[0037] An anti-slip edge is protrudingly provided on the wheel wall of the balance wheel 171 to prevent the first synchronous belt 18 from slipping out, and the anti-slip edge is arranged at intervals along the axial direction of the balance wheel 171; the two anti-slip edges are respectively arranged at the upper end and the lower end of the balance wheel 171, and the first synchronous belt 18 is abutted against the middle part of the balance wheel 171. The spacing between the two anti-slip edges is greater than the width of the first synchronous belt 18. The above arrangement can enable the first synchronous belt 18 to have a certain degree of mobility in the axial direction of the balance wheel 171 to avoid jamming.

[0038] The traveling device includes a driving wheel 41 located at the rear of the housing 51 and a traveling wheel 42 located at the front of the housing 51. The pulley unit also includes a third pulley 16 connected to the driving shaft of the driving wheel 41. The third pulley 16 is connected to the first pulley 14 through a second synchronous belt 19. The first pulley 14 is provided with a first belt groove and a second belt groove along its axial section. The first synchronous belt 18 is inserted in the first belt groove, and the second synchronous belt 19 is inserted in the second belt groove. The setting of the balance wheel 171 eliminates the influence of the second pulley 15 on the first pulley 14, thereby eliminating the influence of the running resistance of the rotary cutter 33 on the driving wheel 41. The driving wheel 41 and the rotary cutter 33 can share a power source. When the rotary cutter 33 encounters a hard object, the transmission mechanism can protect itself and restore normal operation by itself. The driving wheel 41 can always maintain stable travel without frequent shutdown and restart, which is energy-saving and efficient, and has strong adaptive ability.

[0039] like Figure 5 As shown, the frame includes a cover shell 51 which is buckled above the rotary cutter 33, and the cover shell 51 defines a mowing chamber for the rotary cutter 33 to rotate. A protective shell 56 for protecting the pulley unit is also installed in the cover shell 51. A first row of grass openings 511 connected to the mowing chamber are opened on the side of the cover shell 51, and a second row of grass openings 512 connected to the mowing chamber are opened at the rear of the cover shell 51.

[0040] like Figure 6 , Figure 7 As shown, a first flap 52 is hinged on the cover shell 51 through a hinge shaft 53, and the first flap 52 can flip back and forth between its closed position and open position. When the first flap 52 is in the closed position, it covers the first row of grass opening 511, and when the first flap 52 is in the open position, the first row of grass opening 511 is connected to the outside world. A first torsion spring is installed between the first flap 52 and the cover shell 51, and the first torsion spring provides a tendency force for the first flap 52 to remain in the closed position; when the first flap 52 is in the open position, a slot plate 54 is detachably installed on the cover shell 51, and the slot plate 54 is aligned with the first row of grass opening 511, and supports the first flap 52 to keep the first flap 52 in the open position. The slot plate 54 extends outward with the slot downward, and the slot plate 54 can guide the grass when the grass is discharged sideways, and can also serve as a limiter to support the first flap 52 to keep it in the open position.

[0041] The groove plate 54 includes a U-shaped plate 541 and an extension plate 542 formed at the end of the U-shaped plate 541. The extension plate 542 is overlapped on the cover shell 51. The extension plate 542 is formed with a hook 543 that hooks to the hinge shaft 53. The extension plate 542 cooperates with the inherent cover shell 51, and the hook 543 cooperates with the inherent hinge shaft 53. The assembly can be completed without the use of additional fasteners, and the disassembly and assembly are convenient.

[0042] The frame also includes an assembly frame 55 assembled at the rear of the cover shell 51, and a handrail 70 is assembled at the rear of the assembly frame 55. The handrail 70 is assembled with a control lever for controlling the opening and closing of the engine 20.

[0043] like Figure 8 , Fig. 9 As shown, the assembly frame 55 is provided with a grass guide port 5511 connected to the second grass discharge port 512, and a second flip cover 57 is hinged on the assembly frame 55. The second flip cover 57 can flip back and forth between its closed position and open position. When the second flip cover 57 is in the closed position, it covers the grass guide port 5511, and when the second flip cover 57 is in the open position, the grass guide port 5511 is connected to the outside; a second torsion spring is installed between the second flip cover 57 and the assembly frame 55, and the second torsion spring provides a tendency force for the second flip cover 57 to remain in the closed position; when the second flip cover 57 is in the open position, a grass collecting bucket 60 is detachably installed on the assembly frame 55 and supports the second flip cover 57 to keep the second flip cover 57 in the open position, and the grass inlet of the grass collecting bucket 60 is connected to the grass guide port 5511. The grass collecting bucket 60 can collect grass clippings during the rear grass discharge, and can also serve as a limiter to support the second flip cover 57 to keep it in the open position.

[0044] The assembly frame 55 includes a forward tilting plate 551 inclined toward the cover shell 51, and side wing plates 552 located on both sides of the forward tilting plate 551, the grass guide port 5511 is opened on the forward tilting plate 551, and the forward tilting plate 551 is also provided with a boss 5512 that is offset from the grass guide port 5511; the grass collecting bucket 60 includes a flexible bag 61 and a support frame 62 supported on the outer edge of the flexible bag 61, the support frame 62 includes a supporting rod 621 supported on the outer edge of the forward tilting plate 551, and hanging rods 622 are symmetrically provided on both sides of the supporting rod 621; the connecting position between the forward tilting plate 551 and the two side wing plates 552 is formed with a card slot 553 for embedding the hanging rod 622. The cooperation between the supporting rod 621 and the forward tilting plate 551 can provide effective support for the grass collecting bucket 60, and the cooperation between the hanging rod 622 and the card slot 553 can prevent the grass collecting bucket 60 from tipping over. Through the cooperation of the above structures, the grass collecting bucket 60 can be stably assembled without the need for additional fasteners, and disassembly and assembly are convenient.

[0045] When in use, side discharge or rear discharge of grass can be selected according to needs. When side discharge of grass is needed, it is only necessary to open the first flap 52 and assemble the slot plate 54 to keep the first flap 52 in the open position, then remove the grass collecting bucket 60 and close the second flap 57. The cut grass will be discharged through the first grass row opening 511 through the slot plate 54. When rear discharge of grass is needed, it is only necessary to open the second flap 57 and assemble the grass collecting bucket 60 to keep the second flap 57 in the open position, then remove the slot plate 54 and close the first flap 52. The cut grass will enter the grass collecting bucket 60 through the second grass row opening 512.

[0046] It should be understood that in the claims and description of the utility model, all "including..." should be understood as open-ended meanings, that is, their meanings are equivalent to "at least including...", and should not be understood as closed-ended meanings, that is, their meanings should not be understood as "only including...". The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0047] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should be covered by the protection scope of the utility model.

Claims

1. A self-propelled lawn mower, comprising a frame, a mowing device, a traveling device and a driving device, characterized in that: The driving device includes a driving member and a transmission mechanism, and the transmission mechanism includes a gear unit and a pulley unit; the gear unit is drivingly connected to the output shaft of the driving member, and the pulley unit is drivingly connected to the power shaft of the rotary cutter; the pulley unit includes a first pulley, a second pulley and a balance wheel, the first pulley and the second pulley are connected through a first synchronous belt transmission, the balance wheel is located between the first pulley and the second pulley, and is pressed against the outer side of the first synchronous belt to push the first side of the first synchronous belt toward the second side; the balance wheel is mounted on a swing rod and can swing relative to the first pulley and the second pulley, and a tension spring is mounted on the swing rod, and the tension spring provides a tendency force for the balance wheel to always press against the first synchronous belt.

2. A self-propelled lawn mower according to claim 1, characterized in that: The output shaft of the driving member is arranged horizontally, the power shaft of the rotary cutter is arranged vertically, the gear unit comprises a first gear and a second gear meshing with each other, and both the first gear and the second gear are bevel gears; the gear unit transmits the power provided by the driving member to the pulley unit through a transmission shaft.

3. A self-propelled lawn mower according to claim 2, characterized in that: The mowing device comprises a rotary cutter, a power shaft of the rotary cutter is rotatably mounted on a mounting plate, and the second pulley is fixedly sleeved on the power shaft and is located below the mounting plate.

4. A self-propelled lawn mower according to claim 3, characterized in that: The swing rod includes a rotating end and an assembly end that are relatively arranged, the rotating end is rotatably assembled on the assembly disk, and the balance wheel is suspended below the assembly end; one end of the tension spring is hooked on the assembly end, and the other end is hooked on the frame; the central axis of the balance wheel is parallel to the central axes of the first pulley and the second pulley, and the balance wheel is arranged close to the first pulley.

5. A self-propelled lawn mower according to any one of claims 1 to 4, characterized in that: The frame includes a cover shell buckled above the rotary cutter, the cover shell defines a mowing chamber for the rotary cutter to rotate; a first grass row opening connected to the mowing chamber is opened on the side of the cover shell, and a second grass row opening connected to the mowing chamber is opened at the rear of the cover shell.

6. A self-propelled lawn mower according to claim 5, characterized in that: A first flap is hinged on the cover shell through a hinge shaft, and the first flap can flip back and forth between its closed position and an open position. When the first flap is in the closed position, it covers the first row of grass openings, and when the first flap is in the open position, the first row of grass openings are connected to the outside world; a first torsion spring is installed between the first flap and the cover shell, and the first torsion spring provides a tendency force for the first flap to remain in the closed position.

7. A self-propelled lawn mower according to claim 6, characterized in that: When the first flap is in the open position, a slot plate is detachably mounted on the cover shell, the slot plate is aligned with the first row of grass openings, and supports the first flap to keep the first flap in the open position, the slot plate extends outward with the slot opening downward; the slot plate includes a U-shaped plate, and an extension plate formed at the end of the U-shaped plate, the extension plate is overlapped on the cover shell, and a hook is formed on the extension plate to hook onto the hinge shaft.

8. The self-propelled lawn mower according to claim 5, characterized in that: The frame also includes an assembly frame installed at the rear of the cover shell, and a grass guide port connected to the second row of grass ports is opened on the assembly frame. A second flip cover is hinged on the assembly frame, and the second flip cover can be flipped back and forth between its closed position and open position. When the second flip cover is in the closed position, it covers the grass guide port, and when the second flip cover is in the open position, the grass guide port is connected to the outside.

9. A self-propelled lawn mower according to claim 8, characterized in that: A second torsion spring is installed between the second flap and the assembly frame, and the second torsion spring provides a tendency force for the second flap to remain in the closed position; when the second flap is in the open position, a grass collecting bucket is detachably installed on the assembly frame and supports the second flap to keep the second flap in the open position, and the grass inlet of the grass collecting bucket is connected to the grass guide port.

10. A self-propelled lawn mower according to claim 9, characterized in that: The assembly frame includes a forward tilting plate inclined toward the cover shell, and side wing plates located on both sides of the forward tilting plate, the grass guide port is opened on the forward tilting plate, and a boss misaligned with the grass guide port is also protruding on the forward tilting plate; the grass collecting bucket includes a flexible bag and a support frame supported on the outer edge of the flexible bag, the support frame includes a supporting rod supported on the outer edge of the forward tilting plate, and hanging rods are symmetrically provided on both sides of the supporting rod; the connecting position between the forward tilting plate and the two side wing plates is formed with a card slot for embedding the hanging rod.

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