A grass and wood cutting mechanism

Abstract

The application relates to a grass and wood cutting mechanism, belonging to the technical field of garden tools, which comprises a cover shell, a connecting frame arranged on the cover shell, a cutter disc rotatably connected to the bottom of the cover shell, a plurality of grass or wood cutting tools rotatably connected to the cutter disc, the plurality of grass or wood cutting tools being arranged in a circumferential array with the axis of the cutter disc as the center, the cutter disc comprising an upper mounting disc and a lower mounting disc, a containing cavity for containing the grass or wood cutting tools being formed between the upper mounting disc and the lower mounting disc, the grass or wood cutting tools being rotatably arranged in the containing cavity, a limiting block being arranged between two adjacent grass or wood cutting tools, the two ends of the limiting block being respectively attached to the upper mounting disc and the lower mounting disc, the grass or wood cutting tool comprising a rotating part and a blade part, the blade part being located outside the containing cavity, the rotating part being attached to the side wall of the limiting block after the grass or wood cutting tool is rotated, and the cover shell being provided with a driving assembly for driving the cutter disc to rotate. The application has the effect of improving the flexibility of the blade connected with the cutter disc, thereby improving the safety of grass and wood cutting operation.

Description

Technical Field

[0001] This application relates to the technical field of garden tools, and in particular to a dual-purpose grass-cutting and wood-cutting mechanism. Background Technology

[0002] Currently, lawnmowers are also known as lawn trimmers, lawn mowers, and lawn mowers. A lawnmower is a mechanical tool used for trimming lawns, vegetation, etc. It consists of a cutter head, engine, wheels, a walking mechanism, blades, a handle, and a control unit. The cutter head is mounted on the wheels, the blades are mounted on the cutter head, and the engine is mounted on the cutter head. The high-speed rotation of the blades, powered by the engine, significantly increases the speed of lawn mowing, saving workers' time and reducing manpower.

[0003] During the process of trimming shrubs with a lawnmower, it was found that some shrub branches are quite thick, which can easily damage the lawnmower blades, shorten their lifespan, and in severe cases, cause the blades to break and injure the lawnmower workers. Summary of the Invention

[0004] In order to improve the flexibility of the blades connected to the cutter head, thereby improving the safety of grass and wood cutting operations, this application provides a dual-purpose grass and wood cutting mechanism.

[0005] The dual-purpose grass-cutting and wood-cutting mechanism provided in this application adopts the following technical solution:

[0006] A dual-purpose grass-cutting and wood-cutting mechanism includes a housing, a connecting frame on the housing, a blade disc rotatably connected to the bottom of the housing, and multiple cutting components for cutting grass or wood rotatably connected to the blade disc, the multiple cutting components being arranged in a circular array around the axis of the blade disc.

[0007] The cutter head includes an upper mounting plate and a lower mounting plate, forming a receiving cavity between the upper and lower mounting plates for accommodating the cutting object. The cutting object is rotatably disposed within the receiving cavity. A limiting block is provided between two adjacent cutting objects, with both ends of the limiting block respectively abutting the upper and lower mounting plates. The cutting object includes a rotating part and a cutting edge part, with the cutting edge part located outside the receiving cavity. After the cutting object rotates, the rotating part abuts against the side wall of the limiting block. The cover is provided with a drive assembly for driving the cutter head to rotate.

[0008] By adopting the above technical solution, the cutter head rotates under the action of the drive component, thereby enabling the trimming of vegetation through the cutting tool connected to the cutter head. Different cutting tools can be selected according to the vegetation being trimmed, expanding the application range of this dual-purpose grass and wood cutting mechanism. The setting of the cutting tool rotating and connected to the cutter head improves the flexibility of the cutting tool connected to the cutter head. If the cutting tool comes into contact with a hard object during the trimming of vegetation, the cutting tool can rotate to avoid the hard object. The cutting tool is less likely to be damaged or detached from the cutter head under the action of the hard object, which not only extends the service life of the cutting tool, but also improves the safety of grass and wood cutting operations. In addition, since the rotating part of the cutting tool fits against the side wall of the limiting block after rotation, the rotation of the cutting tool is less likely to damage the limiting block, extending the service life of the cutter head.

[0009] Preferably, the drive assembly includes a linkage wheel rotatably connected to the cover and a drive source for driving the linkage wheel to rotate. The drive source is disposed on the cover. The linkage wheel is coaxially connected to the cutter head by a fixing bolt. The upper mounting plate has a fixing through hole for the fixing bolt to pass through. The linkage wheel has a fixing threaded hole that cooperates with the fixing bolt. The lower mounting plate has a clearance slotted hole.

[0010] By adopting the above technical solution, the upper mounting plate is fixed to the linkage wheel with the cooperation of the fixing bolt and the fixing threaded hole. By setting the recessed waist-shaped hole, on the one hand, the screw head of the fixing bolt is not easy to contact the vegetation surface and rotate, which improves the reliability of the upper mounting plate and the linkage wheel being fixed by the fixing bolt. On the other hand, it can directly pass through the recessed waist-shaped hole and contact the fixing bolt, thus facilitating the disassembly and assembly of the cutter head. In addition, it makes it difficult for the lower mounting plate to directly contact the fixing bolt, so the lower mounting plate is not easy to deform under the pressure of the fixing bolt, thus extending the service life of the cutter head.

[0011] Preferably, a cleaning blade is rotatably connected to the cutter head, and the cleaning blade is rotatably disposed in the receiving cavity. The cleaning blade is used to clean debris in the receiving cavity. When the cutting object rotates, the rotating part is attached to the cleaning blade and drives the cleaning blade to rotate.

[0012] By adopting the above technical solution, the rotation of the cutting part drives the cleaning blade to rotate, eliminating the need for an additional drive source and facilitating the cleaning of debris in the receiving cavity. Furthermore, the rotation of the cleaning blade allows debris in the receiving cavity to be discharged through the clearance slot, thus preventing debris generated during the trimming process from entering the receiving cavity and affecting the rotation angle of the cutting part, thereby improving the reliability of the cutting part rotating and clearance due to contact with hard objects.

[0013] Preferably, the upper mounting plate is further provided with a straw-covering curtain, which is used to control the opening and closing of the receiving cavity with the outside world, and the end face of the rotating part facing away from the lower mounting plate is in contact with the straw-covering curtain.

[0014] By adopting the above technical solution, the setting of the straw curtain makes it difficult for external debris to enter the receiving cavity, and further reduces the impact of debris entering the receiving cavity on the rotation angle of the cutting object.

[0015] Preferably, a protective plate for blocking the cutting object is rotatably connected to the cover. The cover moves so that the protective plate rotates to allow the cutting object to trim the vegetation. The cover is provided with a reset elastic element for driving the protective plate to rotate to block the cutting object.

[0016] By adopting the above technical solution, during the movement of the cover, the protective plate can rotate in a direction away from the ground so that the cutting object can contact the vegetation. When the cover stops moving, the protective plate can rotate under the action of the reset elastic element to block the cutting object, thus blocking the cutting object and making it less likely for the operator to be scratched by the exposed cutting object, effectively improving the safety of the grass and wood cutting dual-purpose mechanism.

[0017] Preferably, the cover is provided with a limiting plate, and the protective plate is provided with a limiting rod. When the protective plate rotates to block the object being cut, the limiting rod is in contact with the top of the limiting plate, and the limiting plate and the limiting rod cooperate to restrict the protective plate from rotating toward the ground.

[0018] By adopting the above technical solution, the rotation range of the protective plate is limited by the cooperation of the limiting plate and the limiting rod, so that the protective plate does not rotate to contact the object being cut, thus extending the service life of the protective plate and the object being cut.

[0019] Preferably, the cover is provided with a pressing roller for pressing grass, and both ends of the pressing roller are rotatably connected to a rotating plate. The rotating plate is rotatably connected to the cover, and the cover is provided with a limiting member for limiting the rotation angle of the rotating plate.

[0020] By adopting the above technical solution, the cutting grass can be rolled and pressed by the cooperation of the rotating plate and the pressing roller, which makes it less likely for the grass to fly around and facilitates the collection of grass. The rotation angle of the rotating plate is limited by the limiting component, thereby adjusting the distance between the pressing roller and the cover, that is, adjusting the height distance between the grass-cutting and wood-cutting dual-purpose mechanism and the vegetation. The rotation angle of the rotating plate can be adjusted according to the terrain of the vegetation, thus expanding the application range of the grass-cutting and wood-cutting dual-purpose mechanism.

[0021] Preferably, the limiting component includes a limiting bolt and a limiting nut, the limiting bolt and the limiting nut are threaded together, the cover has a plurality of first limiting holes, the rotating plate has a plurality of second limiting holes, after the rotating plate rotates, one of the first limiting holes communicates with any one of the second limiting holes, the limiting bolt passes through the communicating first limiting hole and second limiting hole and then the limiting nut fixes the rotating plate to the cover.

[0022] By adopting the above technical solution, the rotation of the rotating plate allows for multiple selectable distances between the pressing roller and the cover through the cooperation of one of the first limiting holes and any one of the second limiting holes. This enables the grass-cutting and wood-cutting dual-purpose mechanism to be applicable to vegetation in different terrains, thus expanding its application range. The cover and rotating plate are fixed by the cooperation of the limiting bolts and limiting nuts, which is simple to obtain materials and easy to operate.

[0023] Preferably, the housing is provided with a protective frame for protecting the drive source.

[0024] By adopting the above technical solution, when cutting trees, the trees may tilt towards the dual-purpose grass and wood cutting mechanism due to inertia, which may damage the gasoline engine. With the setting of the protective frame, the gasoline engine is less likely to be hit when the trees fall, thus preventing damage to the gasoline engine due to impact.

[0025] Preferably, the connecting frame is slidably mounted on the cover, the cover is provided with multiple mounting plates, and a mounting groove is formed between two adjacent mounting plates. The cover is provided with a movable rod that passes through two adjacent mounting grooves. Connecting plates are provided on both sides of the connecting frame, and the connecting plates on both sides of the connecting frame are respectively located in two adjacent mounting grooves. A movable through hole is provided on the connecting plate for the movable rod to pass through. After the connecting frame slides, the connecting plate and the mounting plate are fitted together, and the connecting plate and the mounting plate are fixed by a connector.

[0026] By adopting the above technical solution, the setting of the moving rod provides guidance for the sliding of the connecting frame on the cover, making it easier to control the connecting frame to slide until the connecting plate and the mounting plate are in contact. The connecting frame is slidably set on the cover. If there are obstacles that make it difficult for the grass-cutting and wood-cutting dual-purpose mechanism to trim the vegetation near the obstacles, the position of the connecting frame on the cover can be adjusted to expand the application range of the grass-cutting and wood-cutting dual-purpose mechanism and improve the reliability of trimming vegetation through the grass-cutting and wood-cutting dual-purpose mechanism.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By setting up a rotating connection between the cutting component and the cutter head, the flexibility of the cutting component connected to the cutter head is improved. If the cutting component comes into contact with a hard object during the vegetation trimming process, the cutting component can rotate to avoid the hard object. The cutting component is less likely to be damaged or detached from the cutter head under the action of the hard object, which not only extends the service life of the cutting component, but also improves the safety of grass and wood cutting operations.

[0029] 2. The upper mounting plate is fixed to the linkage wheel with the cooperation of the fixing bolt and the fixing threaded hole. By setting the recessed waist-shaped hole, on the one hand, the screw head of the fixing bolt is not easy to contact the vegetation surface and rotate, which improves the reliability of the upper mounting plate and the linkage wheel being fixed by the fixing bolt. On the other hand, it can directly pass through the recessed waist-shaped hole and contact the fixing bolt, which facilitates the disassembly and assembly of the cutter head. In addition, it makes it difficult for the lower mounting plate to directly contact the fixing bolt, so the lower mounting plate is not easy to deform under the pressure of the fixing bolt, thus extending the service life of the cutter head. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a detailed drawing of some parts of the outer casing in an embodiment of this application.

[0032] Figure 3 This is a detailed view of the bottom of the casing according to an embodiment of this application.

[0033] Figure 4 This is a detailed diagram of the connection between the cutter head and the linkage wheel in an embodiment of this application.

[0034] Figure 5 This is a detailed view of the bottom of the cutter head in an embodiment of this application.

[0035] Figure 6 This is a detailed drawing of the cutter head without the mounting plate in an embodiment of this application.

[0036] Figure 7 This is a detailed diagram of the fit between the protective plate and the cover in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Cover; 11. Connecting frame; 111. Connecting plate; 112. Moving through hole; 12. Mounting plate; 121. Mounting groove; 13. Moving rod; 14. First limiting hole; 15. Placement frame; 151. Drive wheel; 152. Drive belt; 153. Gasoline engine; 16. Protective frame; 17. Limiting plate; 2. Protective plate; 21. Side plate; 22. Limiting rod; 23. Return spring; 3. Pressure roller; 31. Rotating plate; 311. Second limiting hole; 32. Limiting component; 321. Limiting bolt; 3 22. Limiting nut; 4. Cutter head; 41. Upper mounting plate; 42. Lower mounting plate; 421. Clearance slot; 422. Clearance groove; 43. Receiving cavity; 44. Limiting block; 45. Fixing bolt; 46. Countersunk bolt; 461. Countersunk nut; 462. Through hole; 47. Cleaning plate; 471. Torsion spring; 48. Grass cover curtain; 481. Mounting part; 482. Curtain part; 5. Cutting object; 51. Rotating part; 52. Cutting edge part; 6. Linkage wheel; 61. Fixed threaded hole; 7. Driven wheel; 8. Linkage belt. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0039] This application discloses a dual-purpose grass-cutting and wood-cutting mechanism, referring to... Figure 1 The system includes a housing 1, on which a connecting frame 11 is slidably connected. This connecting frame 11 can be used with an all-terrain vehicle, allowing the dual-purpose grass and wood cutting mechanism to be used for both manual trimming and labor saving when used with an all-terrain vehicle. Four mounting plates 12 are fixedly mounted on the housing 1, arranged evenly along its length. Mounting grooves 121 are formed between adjacent mounting plates 12. A movable rod 13, penetrating two adjacent mounting grooves 121, is slidably connected to the housing 1. The two ends of the movable rod 13 are fixed to the corresponding mounting plate 12 by bolts. Connecting plates 111 are fixed on both sides of the connecting frame 11, located within two adjacent mounting grooves 121. A through hole 112 is provided on the connecting plate 111 for the movable rod 13 to pass through.

[0040] Reference Figure 1 After the connecting frame 11 slides, the connecting plates 111 on both sides of the connecting frame 11 can respectively fit with the two adjacent mounting plates 12. The connecting plates 111 and the mounting plates 12 are fixed by connectors. In this embodiment, the connectors are positioning bolts and positioning nuts. The positioning bolts and positioning nuts are threaded together. The connecting plates 111 and the mounting plates 12 are provided with positioning through holes for the positioning bolts to pass through, which facilitates the fixing of the connecting plates 111 and the mounting plates 12, thereby fixing the position of the connecting frame 11 on the cover 1.

[0041] The movable rod 13 provides guidance for the sliding of the connecting frame 11 on the cover 1, making it easier to control the connecting frame 11 to slide until the connecting plate 111 and the mounting plate 12 are in contact. The connecting frame 11 is slidably set on the cover 1. If there are obstacles that make it difficult for the grass-cutting and wood-cutting dual-purpose mechanism to trim the vegetation near the obstacles, the position of the connecting frame 11 on the cover 1 can be adjusted to expand the application range of the grass-cutting and wood-cutting dual-purpose mechanism and improve the reliability of trimming vegetation through the grass-cutting and wood-cutting dual-purpose mechanism.

[0042] Reference Figure 2 , Figure 3 and Figure 4Three cutter discs 4 are rotatably connected to the bottom of the casing 1. Each cutter disc 4 rotates around its own axis. Two cutting tools 5 for mowing grass or wood are rotatably connected to each cutter disc 4, and the two cutting tools 5 are symmetrically arranged on both sides of the radial direction of the cutter disc 4. Each cutting tool 5 includes a rotating part 51 and a cutting edge part 52. The cutting edge part 52 is further divided into a flat edge and a serrated edge. The flat-edge cutting tool 5 is used to trim lawns, while the serrated-edge cutting tool 5 is used to trim shrubs. The appropriate cutting tool 5 can be selected according to the vegetation conditions. In this embodiment, the cutting tool 5 is a flat-edge cutting tool. Due to the rotatable connection between the cutting tool 5 and the cutter disc 4, if the cutting tool 5 comes into contact with a hard object during the trimming of vegetation, the cutting tool 5 can rotate to avoid the hard object, and the cutting tool 5 is not easily damaged by the hard object.

[0043] Reference Figure 2 and Figure 3 The housing 1 is equipped with a drive assembly for rotating the cutter head 4. The drive assembly includes a linkage wheel 6 rotatably connected to the housing 1 and a drive source for rotating the linkage wheel 6. The drive source is located on the housing 1. Two driven wheels 7 are also rotatably connected to the housing 1. The linkage wheel 6 is coaxially fixed to one of the cutter heads 4, and the other two driven wheels 7 are coaxially fixed to the remaining two driven wheels 7 respectively. The linkage wheel 6 and the driven wheels 7 are connected by a linkage belt 8, which is slidably mounted on the housing 1. When the linkage wheel 6 is driven to rotate by the drive source, the two driven wheels 7 can rotate synchronously under the action of belt transmission, so that the three cutter heads 4 can work simultaneously, saving energy.

[0044] Reference Figure 4 , Figure 5 and Figure 6 The cutter head 4 includes an upper mounting plate 41 and a lower mounting plate 42. A receiving cavity 43 is formed between the upper mounting plate 41 and the lower mounting plate 42 to accommodate the cutting workpiece 5. The cutting workpiece 5 is rotatably disposed within the receiving cavity 43, and the cutting edge 52 of the cutting workpiece 5 is located outside the receiving cavity 43. Therefore, the normal trimming operation will not be affected after the cutting workpiece 5 rotates to avoid obstruction. After the cutting workpiece 5 rotates, the rotating part 51 fits against the side wall of the limiting block 44. Therefore, the rotation of the cutting workpiece 5 is less likely to damage the limiting block 44, thus extending the service life of the cutter head 4.

[0045] Reference Figure 5Two limiting blocks 44 are fixedly mounted on the cutter head 4. The limiting blocks 44 are symmetrically arranged on both sides of the radial direction of the cutter head 4, and the axis of symmetry is perpendicular to the line connecting the two cutting parts 5. The two ends of the limiting blocks 44 are fixed to the upper mounting plate 41 and the lower mounting plate 42 respectively. The fixing method can be bolts or welding. The setting of the lower mounting plate 42 provides protection for the cutting parts 5, so that the end of the cutting parts 5 away from the upper mounting plate 41 is not easily damaged by contact with the vegetation surface. In addition, the limiting blocks 44 limit the rotation angle of the cutting parts 5 in the receiving cavity 43, so that the two cutting parts 5 are not easily rotated to interfere with each other, thus extending the service life of the cutting parts 5.

[0046] Reference Figure 4 , Figure 5 and Figure 6 The cutter head 4, fixed to the linkage wheel 6, is coaxially fixed to the linkage wheel 6 by two fixing bolts 45. A through hole for the fixing bolts 45 is provided on the upper mounting plate 41, and a threaded hole 61 for the fixing bolts 45 is provided on the linkage wheel 6. After the fixing bolts 45 pass through the through hole, they are screwed into the corresponding threaded hole 61, thus fixing the upper mounting plate 41 to the linkage wheel 6. A recessed slotted hole 421 is provided on the lower mounting plate 42. This recessed slotted hole 421 prevents the screw head of the fixing bolts 45 from contacting the vegetation surface and rotating, and also facilitates the disassembly and assembly of the cutter head 4. Furthermore, the lower mounting plate 42 is less prone to deformation under the pressure of the fixing bolts 45, extending the service life of the cutter head 4.

[0047] Reference Figure 5 and Figure 6 The upper mounting plate 41 and the lower mounting plate 42 are fixed together by countersunk bolts 46 and countersunk nuts 461. Through holes 462 are provided on the upper mounting plate 41, the lower mounting plate 42, and the cutting tool 5 for the countersunk bolts 46 to pass through. The cutting tool 5 rotates around the countersunk bolts 46. A clearance groove 422 is provided on the side of the lower mounting plate 42 facing away from the upper mounting plate 41 to accommodate the head of the countersunk bolts 46. After the countersunk bolts 46 are passed through the through holes 462, the countersunk nuts 461 are tightened, thus fixing the upper mounting plate 41 and the lower mounting plate 42 and rotatably connecting the cutting tool 5 to the cutter head 4. The clearance groove 422 prevents the head of the countersunk bolts 46 from rotating during vegetation trimming operations, improving the reliability of the fixation between the upper mounting plate 41 and the lower mounting plate 42. The remaining cutter head 4 and driven wheel 7 are fixed in the same manner.

[0048] Reference Figure 6Both sides of the cutting component 5 are rotatably connected to cleaning blades 47 for cleaning debris from the receiving cavity 43. The cleaning blades 47 are rotatably connected to the cutter head 4 and are rotatably disposed within the receiving cavity 43. When the cutting component 5 rotates, the rotating part 51 comes into contact with the cleaning blades 47 and drives the cleaning blades 47 to rotate. After the cleaning blades 47 rotate, the debris in the receiving cavity 43 can be discharged through the clearance slot 421. This prevents debris generated during the trimming process from entering the receiving cavity 43 and affecting the rotation angle of the cutting component 5, thus improving the reliability of the cutting component 5 rotating and clearance due to contact with hard objects. The cutter head 4 may also be provided with a torsion spring 471 for resetting the cleaning blades 47 after rotation, further improving the reliability of cleaning debris through the rotation of the cleaning blades 47.

[0049] Reference Figure 4 , Figure 5 and Figure 6 The upper mounting plate 41 is also provided with a straw-covering curtain 48 for controlling the opening and closing of the receiving cavity 43 and the outside world. The straw-covering curtain 48 includes a mounting part 481 and a curtain part 482. The mounting part 481 is attached to the top of the upper mounting plate 41 and is fixed to the upper mounting plate 41 by bolts. The curtain part 482 is fixed to the mounting part 481 and consists of two rows of curtains arranged in an alternating manner. The curtains are made of flexible fabric strips. The rotating part 51 is attached to the end face of the lower mounting plate 42. The straw-covering curtain 48 makes it difficult for external debris to enter the receiving cavity 43, and further makes it less likely for debris to enter the receiving cavity 43 and affect the rotation angle of the cutting object 5.

[0050] Reference Figure 2 A mounting frame 15 is fixedly connected to the cover 1, and a drive wheel 151 is rotatably connected to the mounting frame 15. The drive wheel 151 and the linkage wheel 6 are connected by a drive belt 152. When the drive wheel 151 rotates, the linkage wheel 6 can rotate under the action of belt drive. In this embodiment, the drive source is a gasoline engine 153. The gasoline engine 153 is fixed to the mounting frame 15, and the output shaft of the gasoline engine 153 is coaxially fixed to the drive wheel 151. When the gasoline engine 153 starts, it can drive the linkage wheel 6 to rotate through the drive wheel 151. When the cutter head 4 is repaired, it is not necessary to disassemble the gasoline engine 153, which is convenient for repair.

[0051] Reference Figure 1 and Figure 2 The housing 1 is fixed with a protective frame 16 for protecting the gasoline engine 153. The protective frame 16 is arranged in a ball mesh shape and surrounds the gasoline engine 153. When cutting trees, the trees may fall towards the grass-cutting and wood-cutting dual-purpose mechanism due to inertia, which may damage the gasoline engine 153. With the setting of the protective frame 16, the gasoline engine 153 is less likely to be damaged by the falling trees.

[0052] Reference Figure 1and Figure 2 The cutter head 4, connected to the linkage wheel 6, can rotate so that the cutting object 5 is located outside the cover 1 in the vertical direction, which facilitates the path exploration of the grass-cutting and wood-cutting dual-purpose mechanism. The end of the cover 1 away from the connecting frame 11 is rotatably connected to a protective plate 2 used to shield the cutting object 5. During the movement of the cover 1, the protective plate 2 can rotate away from the ground due to contact with vegetation, so that the cutting object 5 can trim the vegetation and improve the safety of the grass-cutting and wood-cutting dual-purpose mechanism.

[0053] Reference Figure 2 and Figure 7 Limiting plates 17 are fixedly connected to both sides of the cover 1, and side plates 21 are fixedly connected to both ends of the protective plate 2. The side plates 21 fit with the limiting plates 17 and are rotatably connected to the limiting plates 17. A limiting rod 22 is fixedly connected to the protective plate 2. When the protective plate 2 rotates to block the object to be cut 5, the limiting rod 22 fits with the top of the limiting plate 17, so that the protective plate 2 is not easy to rotate further toward the ground. With the cooperation of the limiting plate 17 and the limiting rod 22, the rotation range of the protective plate 2 is limited, so that the protective plate 2 does not rotate to contact the object to be cut 5, thus extending the service life of the protective plate 2 and the object to be cut 5.

[0054] Reference Figure 7 The cover 1 is provided with a reset elastic element for driving the protective plate 2 to rotate to block the cutting object 5. In this embodiment, the reset elastic element is a reset tension spring 23. One end of the reset tension spring 23 is fixed to the cover 1, and the other end of the reset tension spring 23 is fixed to the side plate 21. When the cover 1 stops moving, the protective plate 2 can rotate under the action of the reset tension spring 23 until the limit rod 22 is in contact with the top of the limit plate 17. No manual operation is required, which further improves the safety of the grass cutting and wood cutting dual-purpose mechanism.

[0055] Reference Figure 3 The bottom end of the cover 1 is provided with a pressing roller 3 for pressing the material. Both ends of the pressing roller 3 are rotatably connected to a rotating plate 31. The rotating plate 31 is rotatably connected to the cover 1. With the cooperation of the rotating plate 31 and the pressing roller 3, the cut grass can be pressed, and the grass is less likely to fly around, making it easier to collect the grass.

[0056] Reference Figure 1 , Figure 2 and Figure 3The cover 1 is provided with a limiting member 32 for limiting the rotation angle of the rotating plate 31. By limiting the rotation angle of the rotating plate 31, the distance between the pressing roller 3 and the cover 1 can be adjusted, thereby adjusting the height distance between the grass-cutting and wood-cutting dual-purpose mechanism and the vegetation, which is convenient for correcting the vegetation. The limiting member 32 includes a limiting bolt 321 and a limiting nut 322. The limiting bolt 321 and the limiting nut 322 are threaded together. Five first limiting holes 14 are opened in sequence on the cover 1, and three second limiting holes 311 are opened in sequence on the rotating plate 31. After the rotating plate 31 rotates, one of the first limiting holes 14 can communicate with one of the second limiting holes 311. At this time, the limiting bolt 321 can be passed through the first limiting hole 14 and the second limiting hole 311. Through the cooperation of the limiting bolt 321 and the limiting nut 322, the cover 1 and the rotating plate 31 are fixed, and the distance between the pressing roller 3 and the cover 1 is limited.

[0057] The implementation principle of the dual-purpose grass and wood cutting mechanism in this application embodiment is as follows: Select a suitable cutting tool 5 according to the vegetation condition to be trimmed, and make the cutting tool 5 rotatably connected to the blade disc 4 through the countersunk bolt 46. The cleaning plate 47 is in contact with the rotating part 51, and the end face of the rotating part 51 facing away from the lower mounting plate 42 is in contact with the curtain part 482. Then, adjust the distance between the pressing roller 3 and the cover 1 according to the vegetation terrain, and finally adjust the position of the connecting frame 11 on the cover 1.

[0058] During the movement of the cover 1, the protective plate 2 first contacts the vegetation and rotates away from the ground until the cutting component 5 can trim the vegetation. After the cover 1 stops moving, the protective plate 2 can rotate under the action of the return spring 23 until the limit rod 22 is in contact with the top of the limit plate 17. If the cutting component 5 contacts a hard object during the movement of the cover 1, the cutting component 5 can rotate around the countersunk bolt 46 as the axis of rotation to avoid the hard object.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dual-purpose grass-cutting and wood-cutting mechanism, comprising a housing (1), a connecting frame (11) provided on the housing (1), and a blade disc (4) rotatably connected to the bottom of the housing (1), characterized in that: Multiple cutting tools (5) for cutting grass or wood are rotatably connected to the cutter disc (4), and the multiple cutting tools (5) are arranged in a circular array with the axis of the cutter disc (4) as the center. The cutting disc (4) includes an upper mounting plate (41) and a lower mounting plate (42). A receiving cavity (43) for accommodating the cutting object (5) is formed between the upper mounting plate (41) and the lower mounting plate (42). The cutting object (5) is rotatably disposed in the receiving cavity (43). A limiting block (44) is provided between two adjacent cutting objects (5). The two ends of the limiting block (44) are respectively attached to the upper mounting plate (41) and the lower mounting plate (42). The cutting object (5) includes a rotating part (51) and a cutting edge part (52). The cutting edge part (52) is located outside the receiving cavity (43). After the cutting object (5) rotates, the rotating part (51) is attached to the side wall of the limiting block (44). The cover (1) is provided with a driving assembly for driving the cutting disc (4) to rotate. The drive assembly includes a linkage wheel (6) rotatably connected to the cover (1) and a drive source for driving the linkage wheel (6) to rotate. The drive source is set on the cover (1). The linkage wheel (6) is coaxially connected to the cutter head (4) by a fixing bolt (45). The upper mounting plate (41) has a fixing through hole for the fixing bolt (45) to pass through. The linkage wheel (6) has a fixing threaded hole (61) that cooperates with the fixing bolt (45). The lower mounting plate (42) has a recessed waist-shaped hole (421) through it. A cleaning plate (47) is rotatably connected to the cutter head (4). The cleaning plate (47) is rotatably disposed in the receiving cavity (43). The cleaning plate (47) is used to clean the debris in the receiving cavity (43). When the cutting tool (5) rotates, the rotating part (51) is attached to the cleaning plate (47) and drives the cleaning plate (47) to rotate.

2. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 1, characterized in that: The upper mounting plate (41) is also provided with a grass-covering curtain (48), which is used to control the opening and closing of the receiving cavity (43) and the outside world. The rotating part (51) is in contact with the grass-covering curtain (48) on the end face away from the lower mounting plate (42).

3. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 1, characterized in that: The cover (1) is rotatably connected to a protective plate (2) for blocking the cutting object (5). The cover (1) moves so that the protective plate (2) rotates to the point where the cutting object (5) can trim vegetation. The cover (1) is provided with a reset elastic element for driving the protective plate (2) to rotate to block the cutting object (5).

4. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 3, characterized in that: The cover (1) is provided with a limiting plate (17), and the protective plate (2) is provided with a limiting rod (22). When the protective plate (2) rotates to block the cut object (5), the limiting rod (22) and the top of the limiting plate (17) are in contact. The limiting plate (17) and the limiting rod (22) cooperate to restrict the protective plate (2) from rotating toward the ground.

5. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 1, characterized in that: The cover (1) is provided with a pressing roller (3) for pressing grass. Both ends of the pressing roller (3) are rotatably connected to a rotating plate (31). The rotating plate (31) is rotatably connected to the cover (1). The cover (1) is provided with a limiting member (32) for limiting the rotation angle of the rotating plate (31).

6. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 5, characterized in that: The limiting component (32) includes a limiting bolt (321) and a limiting nut (322). The limiting bolt (321) and the limiting nut (322) are threaded together. The cover (1) has a plurality of first limiting holes (14). The rotating plate (31) has a plurality of second limiting holes (311). After the rotating plate (31) rotates, one of the first limiting holes (14) is connected to any one of the second limiting holes (311). The limiting bolt (321) passes through the connected first limiting hole (14) and the second limiting hole (311) and then the limiting nut (322) fixes the rotating plate (31) to the cover (1).

7. The dual-purpose grass-cutting and wood-cutting mechanism according to claim 4 or 5, characterized in that: The housing (1) is provided with a protective frame (16) for protecting the drive source.

8. The dual-purpose lawn mowing and wood cutting mechanism according to claim 1, characterized in that: The connecting frame (11) is slidably mounted on the cover (1). The cover (1) is provided with multiple mounting plates (12). An mounting groove (121) is formed between two adjacent mounting plates (12). The cover (1) is provided with a moving rod (13) that passes through two adjacent mounting grooves (121). The connecting frame (11) is provided with connecting plates (111) on both sides. The connecting plates (111) on both sides of the connecting frame (11) are respectively located in two adjacent mounting grooves (121). The connecting plate (111) is provided with a moving through hole (112) for the moving rod (13) to pass through. After the connecting frame (11) slides, the connecting plate (111) and the mounting plate (12) are in contact. The connecting plate (111) and the mounting plate (12) are fixed by a connector.

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