Cutting mechanism and travelling device

Abstract

The application relates to the technical field of cutting equipment, and particularly discloses a cutting mechanism and a walking device. The cutting mechanism comprises a rotary driving piece, a connecting piece, a supporting assembly, a buffer and a cutting blade. The rotary driving piece has a driving shaft. One of the connecting piece and the supporting assembly is connected with the driving shaft. The other of the connecting piece and the supporting assembly is connected with the cutting blade. The supporting assembly can rotate relative to the connecting piece around the driving shaft. The buffer is connected with the connecting piece and the supporting assembly respectively. The buffer is used for providing buffering between the connecting piece and the supporting assembly when the cutting blade is impacted. The cutting mechanism disclosed by the application reduces the probability of the cutting blade being curled, broken or cracked, reduces the impact force borne by the rotary driving piece, avoids the impact torque being directly transmitted to the rotary driving piece to cause damage of the rotary driving piece, and further improves the service life of the cutting mechanism while ensuring the cutting efficiency.

Description

Technical Field

[0001] This application relates to the field of cutting equipment technology, specifically to a cutting mechanism and a walking device. Background Technology

[0002] Currently, the cutting blade of a cutting mechanism is generally directly connected to a rotary drive (such as a motor), which drives the cutting blade to rotate for cutting. However, the working environment of a cutting mechanism is complex, and the cutting blade may collide with hard objects such as stones during the cutting process. When the cutting blade collides with a hard object, it is prone to chipping, cracking, or breaking. Furthermore, the impact torque may be directly transmitted to the rotary drive, causing damage to the rotary drive and resulting in a short service life for the cutting mechanism. Utility Model Content

[0003] In view of the above, it is necessary to provide a cutting mechanism and a traveling device to improve service life.

[0004] In a first aspect, embodiments of this application provide a cutting mechanism, including a rotary drive, a connector, a support assembly, a buffer, and a cutting blade. The rotary drive has a drive shaft connected to one of the connector and the support assembly. The cutting blade is connected to the other of the connector and the support assembly. The support assembly is rotatable relative to the connector about the drive shaft. The buffer is connected to both the connector and the support assembly, and the buffer is used to provide cushioning between the connector and the support assembly when the cutting blade is impacted.

[0005] In some embodiments, the connector, the support assembly, and the drive shaft are coaxially arranged.

[0006] In some embodiments, the number of buffers is multiple, and the multiple buffers are spaced apart around the drive shaft.

[0007] In some embodiments, the support assembly includes a first cover, the drive shaft is connected to one of the connector and the first cover, the connector has an assembly groove, the buffer is disposed in the assembly groove and connected to the first cover, and the cutting blade is connected to the other of the connector and the first cover.

[0008] In some embodiments, the drive shaft is connected to the connector, and the cutting blade is connected to the first cover; the support assembly further includes a second cover, the first cover and the second cover enclose a storage space, the connector is disposed in the storage space, and the drive shaft passes through the first cover or the second cover and is connected to the connector.

[0009] In some embodiments, the first cover has a first mounting groove on the side facing the second cover, and the portion of the buffer member near the first cover is disposed in the first mounting groove; and / or, the second cover has a second mounting groove on the side facing the first cover, and the portion of the buffer member near the second cover is disposed in the second mounting groove.

[0010] In some embodiments, the first cover and the connector are arranged axially along the drive shaft, the drive shaft is connected to the first cover, the cutting blade is connected to the connector, the first cover has a first mounting groove on the side facing the connector, and the portion of the buffer member near the first cover is disposed in the first mounting groove.

[0011] In some embodiments, the first cover has a storage groove on the side facing the connector, the connector is rotatably disposed in the storage groove, and the first mounting groove is formed at the bottom of the storage groove.

[0012] In some embodiments, the drive shaft passes through the first cover and the connector, and the support assembly further includes a second cover, which is disposed on the side of the connector opposite to the first cover and connected to the drive shaft. The second cover is used to restrict the connector from disengaging from the drive shaft.

[0013] In some embodiments, the support assembly further includes a first bearing sleeved on the drive shaft and located between the first cover and the connector; and / or, the support assembly further includes a second bearing sleeved on the drive shaft and located between the second cover and the connector.

[0014] In some embodiments, the connector is provided with a positioning part, which is inserted and positioned with the cutting blade.

[0015] In some embodiments, the first mounting groove and the assembly groove are both located on one side of the drive shaft and are disposed opposite to each other. The inner wall of the first mounting groove facing the drive shaft is a first arc-shaped wall, and the inner wall of the assembly groove facing the drive shaft is a second arc-shaped wall. Both the first arc-shaped wall and the second arc-shaped wall are recessed towards the drive shaft.

[0016] In some embodiments, a limiting groove is formed on the connector, and the cutting mechanism further includes a limiting member, which is connected to the support component and inserted into the limiting groove.

[0017] In some embodiments, the limiting groove is an arc-shaped groove, and the circle in which the extending direction of the limiting groove is located shares the same center with the circle in which the rotation trajectory of the support component is located.

[0018] In some embodiments, the limiting member is located in the middle of the limiting groove.

[0019] In some embodiments, the extension direction of the buffer is parallel to the tangent of the circle containing the rotation trajectory of the support assembly.

[0020] In some embodiments, the cutting blade is a rigid blade, and the cutting blade is rigidly connected to the support assembly.

[0021] In some embodiments, the pre-pressure exerted by the buffer on the support assembly is greater than the resistance experienced by the cutting blade during normal operation, but less than the impact force experienced by the cutting blade when it collides with a hard object.

[0022] The cutting mechanism of this application embodiment comprises a rotary drive, a support assembly, a connector, a buffer, and a cutting blade. When the cutting blade collides with a hard object such as a stone, the drive shaft of the rotary drive is connected to one of the connector and the support assembly, while the cutting blade is connected to the other. Specifically, the drive shaft is connected to the connector, and the cutting blade is connected to the support assembly; or the drive shaft is connected to the support assembly, and the cutting blade is connected to the connector. Furthermore, the support assembly can rotate relative to the connector around the drive shaft. The buffer is connected to both the connector and the support assembly. The buffer provides cushioning between the connector and the support assembly, thereby offsetting part of the impact force, reducing the probability of the cutting blade chipping, breaking, or snapping, and reducing the impact force on the rotary drive. This prevents the impact torque from being directly transmitted to the rotary drive, thus avoiding damage to the rotary drive. While ensuring cutting efficiency, this also improves the service life of the cutting mechanism.

[0023] Secondly, embodiments of this application also provide a walking device, including the cutting mechanism described in the above embodiments.

[0024] The walking device of this application embodiment improves service life while ensuring cutting efficiency by setting the cutting mechanism as described in the above embodiment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the cutting mechanism provided in the first embodiment of this application.

[0026] Figure 2 yes Figure 1 A three-dimensional structural diagram of the cutting mechanism from another angle.

[0027] Figure 3 yes Figure 1 The cutting mechanism shown is a cross-sectional view along the III-III direction.

[0028] Figure 4 yes Figure 1 A three-dimensional structural diagram of the first cover, connector, buffer, and cutting blade in the cutting mechanism shown.

[0029] Figure 5 This is an exploded structural diagram of the cutting mechanism provided in the second embodiment of this application.

[0030] Figure 6 yes Figure 5 The diagram shows an exploded view of the cutting mechanism from another angle.

[0031] Figure 7 yes Figure 5 The diagram shows a cross-sectional view of the cutting mechanism.

[0032] Key component symbols: Cutting mechanism 100, Rotary drive component 10, Housing 11, Drive shaft 12, Abutment surface 121, Support assembly 20, First cover 21, First mounting groove 211, First arc-shaped wall 2111, Storage space 212, Storage slot 213, Perforation 214, Limiting surface 2141, Second cover 22, Second mounting groove 221, First bearing 23, Second bearing 24, Fastener 25, Connector 30, Assembly groove 31, Second arc-shaped wall 311, Limiting groove 32, Positioning part 33, Buffer component 40, Cutting blade 50, Positioning hole 51, Limiting component 60, Axis L. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0037] Please see Figure 1 and Figure 5 This application provides a cutting mechanism 100 for cutting materials (not shown). The materials can be flowers, crops, etc. For ease of understanding, this application uses the cutting mechanism 100 for cutting flowers as an example; however, this is not intended to limit the scope of this application.

[0038] Please see Figure 1 , Figure 3 and Figure 5 In this embodiment, the cutting mechanism 100 includes a rotary drive 10, a support assembly 20, a connector 30, a buffer 40, and a cutting blade 50. The rotary drive 10 includes a housing 11 and a drive shaft 12. The drive shaft 12 is connected to one of the connector 30 and the support assembly 20, and the cutting blade 50 is connected to the other of the connector 30 and the support assembly 20; that is, the drive shaft 12 is connected to the connector 30, and the cutting blade 50 is connected to the support assembly 20; or the drive shaft 12 is connected to the support assembly 20, and the cutting blade 50 is connected to the connector 30. The support assembly 20 is rotatable relative to the connector 30 around the drive shaft 12. The buffer 40 is connected to both the connector 30 and the support assembly 20, and provides cushioning between the connector 30 and the support assembly 20 when the cutting blade 50 is impacted.

[0039] When the cutting mechanism 100 cuts materials, the drive shaft 12 of the rotary drive 10 drives the cutting blade 50 to rotate through the structure of the connector 30, buffer 40, and support assembly 20, thereby enabling the cutting blade 50 to perform the cutting operation. When the cutting blade 50 collides with a hard object such as a stone, the drive shaft 12 is connected to one of the connector 30 and the support assembly 20, and the cutting blade 50 is connected to the other of the connector 30 and the support assembly 20. That is, the drive shaft 12 is connected to the connector 30, and the cutting blade 50 is connected to the support assembly 20; or the drive shaft 12 is connected to the support assembly 20, and the cutting blade 50 is connected to the connector 30. Furthermore, the support assembly 20 can rotate relative to the connector 30 around the drive shaft 12. The buffer 40 is connected to both the connector 30 and the support assembly 20. By providing cushioning between the connector 30 and the support assembly 20, the buffer 40 offsets part of the impact force, reducing the probability of the cutting blade 50 chipping, breaking, or snapping, and also reducing the impact force on the rotating drive 10. This prevents the impact torque from being directly transmitted to the rotating drive 10, thus avoiding damage to it. While ensuring cutting efficiency, this also increases the service life of the cutting mechanism 100. In addition, by providing cushioning between the connector 30 and the support assembly 20, the buffer 40 also reduces the probability of the cutting blade 50 ejecting hard objects, thereby reducing the chance of injury to the operator.

[0040] In this embodiment, the rotary drive 10 is a drive motor. In other embodiments, the rotary drive 10 may also be a pneumatic motor, a rotary cylinder, etc., and this embodiment does not specifically limit it in this way.

[0041] In this embodiment, the buffer 40 is a spring. In other embodiments, the buffer 40 may also be a flexible element made of a leaf spring, rubber, or other flexible material.

[0042] In this embodiment, the connector 30, the support assembly 20, and the drive shaft 12 are coaxially arranged, that is, the connector 30, the support assembly 20, and the drive shaft 12 have a common axis L (e.g., Figure 3 and Figure 7 (As shown). In this way, the probability of vibration when the drive shaft 12 drives the connecting member 30, the support assembly 20 and the cutting blade 50 to rotate is small, which helps to improve the cutting quality of the cutting mechanism 100.

[0043] To more clearly illustrate the structure and different implementations of the cutting mechanism 100, the specific structure of the cutting mechanism 100 will be described below mainly with reference to the first and second embodiments. It should be understood that the first and second embodiments do not constitute a limitation on the embodiments of this application.

[0044] First embodiment: Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 In the first embodiment, the support assembly 20 includes a first cover 21, a drive shaft 12 connected to a connector 30, a mounting groove 31 on the connector 30, a buffer 40 disposed in the mounting groove 31 and connected to the first cover 21, and a cutting blade 50 connected to the first cover 21. The mounting groove 31 improves the ease of connection between the buffer 40 and the connector 30.

[0045] In the first embodiment, the support component 20 further includes a second cover 22, the first cover 21 and the second cover 22 enclose a storage space 212, a connector 30 is disposed in the storage space 212, and the drive shaft 12 passes through the second cover 22 and is connected to the connector 30.

[0046] By setting up the storage space 212 and placing the connector 30 in the storage space 212, the buffer 40 is also placed in the storage space 212. This effectively prevents grass clippings, dust, etc. from entering the buffer 40 and affecting its buffering effect, thereby improving the service life of the cutting mechanism 100 and reducing the chance of injury to the operator.

[0047] In other embodiments, when the shapes of the first cover 21 and the second cover 22 are changed, and the mounting positions of the rotary drive 10 and the cutting blade 50 are adjusted, the drive shaft 12 can also pass through the first cover 21 and connect to the connector 30. For example, the first cover 21 is placed over the outside of the second cover 22, the cutting blade 50 is connected to the periphery of the first cover 21, and the housing 11 of the rotary drive 10 is disposed on the side of the first cover 21 opposite to the second cover 22, then the drive shaft 12 can pass through the first cover 21 and connect to the connector 30. This application does not specifically limit this aspect.

[0048] In the first embodiment, a first mounting groove 211 is provided on the side of the first cover 21 facing the second cover 22, and the portion of the buffer member 40 near the first cover 21 is disposed in the first mounting groove 211. By providing the first mounting groove 211, it is convenient to cooperate with the mounting groove 31 to install the buffer member 40, and to guide the deformation direction of the buffer member 40, thereby improving the buffering effect of the buffer member 40.

[0049] In the first embodiment, the second cover 22 has a second mounting groove 221 on the side facing the first cover 21, and the portion of the buffer member 40 near the second cover 22 is disposed in the second mounting groove 221. By providing the second mounting groove 221, it is convenient to cooperate with the mounting groove 31 to install the buffer member 40, and to guide the deformation direction of the buffer member 40, thereby improving the buffering effect of the buffer member 40.

[0050] Understandably, in the first embodiment, only one of the first mounting slot 211 and the second mounting slot 221 may be provided. When both the first mounting slot 211 and the second mounting slot 221 are provided, the assembly slot 31 is a through slot, the middle part of the buffer member 40 is housed in the assembly slot 31, the part of the buffer member 40 near the first cover 21 is housed in the first mounting slot 211, and the part of the buffer member 40 near the second cover 22 is housed in the second mounting slot 221. The provision of the first mounting slot 211 and the second mounting slot 221 increases the contact area between the support assembly 20 and the buffer member 40 and guides the deformation direction of the buffer member 40, thereby improving the stability and buffering effect of the buffer member 40 when the support assembly 20 and the connector 30 provide buffering.

[0051] In addition, in the first embodiment, if the second cover 22 is not provided and the structure of the assembly groove 31 is optimized so that the structure of the assembly groove 31 is the same as the structure of the second mounting groove 221, and the cutting blade 50 is connected to the connector 30 with sufficient rotation space, the drive shaft 12 can also be connected to the first cover 21. Correspondingly, the cutting blade 50 is connected to the connector 30. This application embodiment does not specifically limit this.

[0052] In the first embodiment, the first mounting groove 211 is formed by the first cover 21 recessed in a direction away from the second cover 22, and the second mounting groove 221 is formed by the second cover 22 recessed in a direction away from the first cover 21. This allows the first mounting groove 211 and the second mounting groove 221 to be formed on the relatively thin first cover 21 and the second cover 22, respectively, thereby saving costs.

[0053] In the first embodiment, the connector 30 can be a flange coupling, thereby improving the convenience and stability of connecting the connector 30 to the drive shaft 12.

[0054] In the first embodiment, a limiting groove 32 is formed on the connector 30. The cutting mechanism 100 also includes a limiting member 60, which is connected to the support assembly 20 and inserted into the limiting groove 32.

[0055] Specifically, the limiting member 60 passes through the limiting groove 32, and the two ends of the limiting member 60 are respectively connected to the first cover 21 and the second cover 22.

[0056] By setting the limiting groove 32 and the limiting member 60, the angle of rotation of the support component 20 relative to the connecting member 30 can be limited, thereby preventing the buffer member 40 from being damaged due to excessive compression, and preventing a large angular offset between the cutting blade 50 and the drive shaft 12, thus improving the cutting quality of the material being cut by the drive shaft 12 driving the cutting blade 50 to cut.

[0057] In the first embodiment, the limiting groove 32 is an arc-shaped groove, and the circle in which the extending direction of the limiting groove 32 is located shares the same center with the circle in which the rotation trajectory of the support component 20 is located.

[0058] This design improves the smoothness of the support component 20 when rotating relative to the connector 30, thereby enhancing the cushioning effect of the buffer component 40.

[0059] In the first embodiment, the limiting member 60 is located in the middle of the limiting groove 32.

[0060] Specifically, when the cutting mechanism 100 is not in operation, or when the cutting blade 50 does not collide with a hard object, the pre-pressure provided by the buffer 40 keeps the limiting member 60 in the middle of the limiting groove 32. Therefore, regardless of whether the rotary drive 10 drives the cutting blade 50 to rotate forward or backward, the buffer 40's buffering effect is guaranteed. Furthermore, when the impact on the cutting blade 50 ends, the buffer 40 will cause all connected components to return to their initial positions. Returning to the initial positions itself also generates impact. Since the limiting member 60 is located in the middle of the limiting groove 32 when the cutting mechanism 100 is not in operation or when the cutting blade 50 does not collide with a hard object, the relative rotation between the support assembly 20 and the connecting member 30 is bidirectional. Therefore, the impact force on all components connected to the buffer 40 during the return to their initial positions gradually weakens, protecting both the cutting blade 50 and the rotary drive 10, and effectively preventing excessive impact force from knocking away hard objects and causing injury to the operator.

[0061] In the first embodiment, the extension direction of the buffer 40 is parallel to a tangent of the circle containing the rotation trajectory of the support assembly 20.

[0062] When the cutting blade 50 collides with a hard object, the impact force on the support assembly 20 is released along the tangent of the circle on which the rotation trajectory of the support assembly 20 is located. This setting allows the buffer 40 to directly withstand a greater impact force, thereby improving the buffering effect of the buffer 40, and thus increasing the service life of the cutting mechanism 100 and the probability of injury to the operator.

[0063] In the first embodiment, the pre-pressure generated by the buffer 40 on the support assembly 20 is greater than the resistance experienced by the cutting blade 50 during normal operation, but less than the impact force experienced by the cutting blade 50 when it collides with a hard object.

[0064] When the cutting blade 50 is cutting materials normally, the pre-pressure generated by the buffer 40 on the support assembly 20 is greater than the resistance experienced by the cutting blade 50 during normal operation. Therefore, the buffer 40 will not deform. At this time, the cutting blade 50, support assembly 20, buffer 40, and drive shaft 12 can be considered as a single unit. The cutting effect is basically the same as that achieved when the drive shaft 12 is directly connected to the cutting blade 50, which helps to improve cutting efficiency and cutting quality. When the cutting blade 50 collides with a hard object, the pre-pressure generated by the buffer 40 on the support assembly 20 is less than the impact force experienced by the cutting blade 50 when colliding with the hard object. Therefore, the buffer 40 will be compressed and provide buffering force, thereby reducing the probability of the cutting blade 50 rolling, chipping, or breaking, and reducing the impact force experienced by the rotating drive 10. This prevents the impact torque from being directly transmitted to the rotating drive 10 and causing damage to the rotating drive 10. Thus, while ensuring cutting efficiency, the service life of the cutting mechanism 100 is also improved.

[0065] In the first embodiment, there are multiple buffer members 40, which are spaced apart around the drive shaft 12. Correspondingly, there are also multiple first mounting slots 211, second mounting slots 221, and assembly slots 31. The multiple buffer members 40, multiple first mounting slots 211, multiple second mounting slots 221, and multiple assembly slots 31 correspond one-to-one, and each buffer member 40 is installed in the corresponding first mounting slot 211, second mounting slot 221, and assembly slot 31.

[0066] By setting multiple buffers 40 and setting multiple buffers 40 at intervals around the drive shaft 12, the buffering effect of the buffers 40 between the connector 30 and the support assembly 20 is further improved, thereby further improving the service life of the cutting mechanism 100 and reducing the probability of injury to the operator.

[0067] In the first embodiment, there are multiple limiting grooves 32 and multiple limiting members 60. The multiple limiting grooves 32 and multiple limiting members 60 correspond one-to-one. Each limiting groove 32 is provided between two adjacent assembly grooves 31, and the multiple limiting members 60 are respectively inserted into the corresponding limiting grooves 32.

[0068] This configuration allows for precise control of the rotation angle of the support component 20 relative to the connector 30, thereby preventing damage to the buffer component 40 due to excessive compression and further preventing large angular deviations between the cutting blade 50 and the drive shaft 12, thus improving the cutting quality of the material being cut by the drive shaft 12 driving the cutting blade 50.

[0069] Second embodiment: Please refer to the following: Figure 5 , Figure 6 and Figure 7In the second embodiment, the support assembly 20 includes a first cover 21, a drive shaft 12 connected to the first cover 21, a connector 30 having an assembly groove 31, a buffer 40 disposed in the assembly groove 31 and connected to the first cover 21, and a cutting blade 50 connected to the connector 30. The assembly groove 31 improves the ease of connection between the buffer 40 and the connector 30.

[0070] In the second embodiment, the first cover 21 and the connector 30 are arranged along the axial direction of the drive shaft 12. The first cover 21 has a first mounting groove 211 on the side facing the connector 30, and the portion of the buffer 40 near the first cover 21 is disposed in the first mounting groove 211. The axial direction of the drive shaft 12 is the extension direction of the axis L of the drive shaft 12.

[0071] By providing the first mounting groove 211, it is easy to install the buffer member 40 in conjunction with the assembly groove 31. In addition, the provision of the first mounting groove 211 increases the contact area between the buffer member 40 and the first cover 21, and guides the deformation direction of the buffer member 40, thereby improving the buffering effect of the buffer member 40.

[0072] In the second embodiment, the first cover 21 has a storage groove 213 on the side facing the connector 30, the connector 30 is rotatably disposed in the storage groove 213, and the first mounting groove 211 is opened at the bottom of the storage groove 213.

[0073] Thus, the assembly slot 31 and the buffer component 40 are also located in the storage slot 213. A relatively sealed space is formed between the connector 30 and the inner wall of the storage slot 213, which can effectively prevent grass clippings, dust and other debris from entering the buffer component 40 and affecting its buffering effect. This is beneficial to improving the service life of the cutting mechanism 100 and reducing the chance of injury to the operator.

[0074] In the second embodiment, the assembly groove 31 and the first mounting groove 211 are both located on one side of the drive shaft 12 and are arranged opposite to each other. The inner wall of the assembly groove 31 facing the drive shaft 12 is a first arc-shaped wall 2111, and the inner wall of the first mounting groove 211 facing the drive shaft 12 is a second arc-shaped wall 311. Both the first arc-shaped wall 2111 and the second arc-shaped wall 311 are recessed towards the drive shaft 12. This arrangement allows the buffer member 40 to have a larger deformation space in the assembly groove 31 and the first mounting groove 211, thereby improving the buffering effect of the buffer member 40.

[0075] Understandably, in the first embodiment, the first mounting slot 211, the second mounting slot 221 and the assembly slot 31 may also adopt a similar design, and this application embodiment does not specifically limit this.

[0076] Understandably, depending on the shape and arrangement of the buffer 40, the direction of force during the buffering process will differ. Therefore, when designing the first mounting groove 211, the second mounting groove 221, and the assembly groove 31, the direction of force on the buffer 40 can be deduced based on the shape and arrangement of the buffer 40, and then the reserved position of the deformation space can be deduced. Specifically, when the buffer 40 is a cylindrical compression spring, the direction of force during buffering, the direction of deformation of the cylindrical compression spring, and the line connecting the axis of the cylindrical compression spring form the same plane. The direction of force during buffering and the direction of deformation of the cylindrical compression spring are arranged on the opposite side of the line connecting the axis of the cylindrical compression spring. The reserved position of the deformation space is designed in combination with the direction of deformation of the cylindrical compression spring.

[0077] In the second embodiment, the drive shaft 12 passes through the first cover 21 and the connector 30. The support assembly 20 also includes a second cover 22, which is located on the side of the connector 30 away from the first cover 21 and connected to the drive shaft 12. The second cover 22 is used to restrict the connector 30 from coming off the drive shaft 12.

[0078] Since the connector 30 and the first cover 21 can rotate relative to each other, and the first cover 21 is connected to the drive shaft 12, the drive shaft 12 can only move through the connector 30, and the connector 30 can rotate around the drive shaft 12. If the connector 30 is not restrained, it is easy for it to detach from the drive shaft 12, and the connection between the first cover 21, the buffer 40, and the connector 30 is unstable. By providing the second cover 22, the ease of installing the connector 30 is improved, and the stability of the connection between the first cover 21, the buffer 40, and the connector 30 is ensured.

[0079] In the second embodiment, the first cover 21 has a through hole 214, through which the drive shaft 12 passes. The inner wall of the through hole 214 has a limiting surface 2141, and the portion of the drive shaft 12 passing through the through hole 214 has an abutment surface 121 that abuts against and limits the limiting surface 121. This improves the ease of installing the first cover 21 and prevents relative rotation between the first cover 21 and the drive shaft 12.

[0080] In some other embodiments, a pin (not shown) can be inserted into the first cover 21 and connected to the drive shaft 12, which can also restrict the relative rotation between the first cover 21 and the drive shaft 12. This application does not specifically limit this.

[0081] In the second embodiment, the support assembly 20 further includes a first bearing 23, which is sleeved on the drive shaft 12 and located between the first cover 21 and the connector 30.

[0082] By setting the first bearing 23, direct contact between the first cover 21 and the connector 30 is avoided, which improves the smoothness of relative rotation between the first cover 21 and the connector 30 and enhances the buffering effect of the buffer 40.

[0083] In the second embodiment, the support assembly 20 further includes a second bearing 24, which is sleeved on the drive shaft 12 and located between the second cover 22 and the connector 30.

[0084] By setting the second bearing 24, direct contact between the second cover 22 and the connector 30 is avoided, which improves the smoothness of relative rotation between the second cover 22 and the connector 30, and also improves the buffering effect of the buffer 40.

[0085] Understandably, when the support assembly 20 includes both the first bearing 23 and the second bearing 24, the support assembly 20 and the connector 30 will not be in direct contact, and the buffer 40 can fully exert its buffering effect, which is beneficial to improving the service life of the cutting mechanism 100 and reducing the probability of injury to the operator.

[0086] In the second embodiment, both the first bearing 23 and the second bearing 24 are slewing bearings. In other embodiments, the first bearing 23 and the second bearing 24 may also be ordinary bearings, and this application does not specifically limit this.

[0087] In the second embodiment, the support assembly 20 further includes a fastener 25, which is sleeved on the drive shaft 12 and located on the side of the second cover 22 opposite to the connector 30. The fastener 25 is used to press the second cover 22 onto the second bearing 24. This improves the ease of installing the second cover 22.

[0088] In the second embodiment, the fastener 25 is a fastening screw, and the fastener 25 is threadedly connected to the drive shaft 12, thereby facilitating the disassembly and assembly of the fastener 25 and the second cover 22.

[0089] In some other embodiments, the second cover 22 may be threadedly connected to the drive shaft 12, and the fastener 25 may not be provided. This application does not specifically limit this embodiment.

[0090] In the second embodiment, the connector 30 is provided with a positioning part 33, which is inserted and positioned with the cutting blade 50. This arrangement improves the accuracy of installing the cutting blade 50 and prevents the cutting blade 50 from moving relative to the connector 30, thereby improving the cutting efficiency and cutting quality of the cutting blade 50.

[0091] In the second embodiment, the positioning part 33 is a protruding structure. The positioning part 33 is located on the side of the connector 30 away from the first cover 21 and is located between the second bearing 24 and the connector 30. The cutting blade 50 has a positioning hole 51, and the positioning part 33 is inserted into the positioning hole 51 for positioning.

[0092] In some other embodiments, the positioning part 33 may also be a groove structure. Correspondingly, the cutting blade 50 is provided with a protruding structure (not shown) that is inserted and positioned with the positioning part 33. This application embodiment does not specifically limit this.

[0093] In the second embodiment, a limiting groove 32 is formed on the connector 30. The cutting mechanism 100 also includes a limiting member 60, which is connected to the support assembly 20 and inserted into the limiting groove 32.

[0094] By setting the limiting groove 32 and the limiting member 60, the angle of rotation of the support component 20 relative to the connecting member 30 can be limited, thereby preventing the buffer member 40 from being damaged due to excessive compression, and preventing a large angular offset between the cutting blade 50 and the drive shaft 12, thus improving the cutting quality of the material being cut by the drive shaft 12 driving the cutting blade 50 to cut.

[0095] In the second embodiment, the limiting member 60 is provided on the side of the first cover 21 facing the connector 30. The limiting member 60 and the first cover 21 are an integral structure, thereby improving the convenience of assembling the first cover 21 and the connector 30, and improving the structural strength of the limiting member 60.

[0096] In some other embodiments, the limiting member 60 may also be detachably installed on the side of the first cover 21 facing the connector 30, and this application embodiment does not specifically limit this.

[0097] In the second embodiment, the limiting groove 32 is an arc-shaped groove, and the circle in which the extension direction of the limiting groove 32 is located shares the same center with the circle in which the rotation trajectory of the support component 20 is located.

[0098] This design improves the smoothness of the support component 20 when rotating relative to the connector 30, thereby enhancing the cushioning effect of the buffer component 40.

[0099] In the second embodiment, the limiting member 60 is located in the middle of the limiting groove 32.

[0100] Specifically, when the cutting mechanism 100 is not in operation, or when the cutting blade 50 does not collide with a hard object, the pre-pressure provided by the buffer 40 keeps the limiting member 60 in the middle of the limiting groove 32. Therefore, regardless of whether the rotary drive 10 drives the cutting blade 50 to rotate forward or backward, the buffer 40's buffering effect is guaranteed. Furthermore, when the impact on the cutting blade 50 ends, the buffer 40 will cause all connected components to return to their initial positions. Returning to the initial positions itself also generates impact. Since the limiting member 60 is located in the middle of the limiting groove 32 when the cutting mechanism 100 is not in operation or when the cutting blade 50 does not collide with a hard object, the relative rotation between the support assembly 20 and the connecting member 30 is bidirectional. Therefore, the impact force on all components connected to the buffer 40 during the return to their initial positions gradually weakens, protecting both the cutting blade 50 and the rotary drive 10, and effectively preventing excessive impact force from knocking away hard objects and causing injury to the operator.

[0101] In the second embodiment, the extension direction of the buffer 40 is parallel to a tangent of the circle containing the rotation trajectory of the support assembly 20.

[0102] When the cutting blade 50 collides with a hard object, the impact force on the support assembly 20 is released along the tangent of the circle on which the rotation trajectory of the support assembly 20 is located. This setting allows the buffer 40 to directly withstand a greater impact force, thereby improving the buffering effect of the buffer 40, and thus increasing the service life of the cutting mechanism 100 and the probability of injury to the operator.

[0103] In the second embodiment, the pre-pressure generated by the buffer 40 on the support assembly 20 is greater than the resistance experienced by the cutting blade 50 during normal operation, but less than the impact force experienced by the cutting blade 50 when it collides with a hard object.

[0104] When the cutting blade 50 is cutting materials normally, the pre-pressure generated by the buffer 40 on the support assembly 20 is greater than the resistance experienced by the cutting blade 50 during normal operation. Therefore, the buffer 40 will not deform. At this time, the cutting blade 50, support assembly 20, buffer 40, and drive shaft 12 can be considered as a single unit. The cutting effect is basically the same as that achieved when the drive shaft 12 is directly connected to the cutting blade 50, which helps to improve cutting efficiency and cutting quality. When the cutting blade 50 collides with a hard object, the pre-pressure generated by the buffer 40 on the support assembly 20 is less than the impact force experienced by the cutting blade 50 when colliding with the hard object. Therefore, the buffer 40 will be compressed and provide buffering force, thereby reducing the probability of the cutting blade 50 rolling, chipping, or breaking, and reducing the impact force experienced by the rotating drive 10. This prevents the impact torque from being directly transmitted to the rotating drive 10 and causing damage to the rotating drive 10. Thus, while ensuring cutting efficiency, the service life of the cutting mechanism 100 is also improved.

[0105] In the second embodiment, there are multiple buffer members 40, which are spaced apart around the drive shaft 12. Correspondingly, there are also multiple first mounting slots 211 and assembly slots 31. The multiple buffer members 40, multiple first mounting slots 211 and multiple assembly slots 31 correspond one-to-one, and each buffer member 40 is installed in the corresponding first mounting slot 211 and assembly slot 31.

[0106] By setting multiple buffers 40 and setting multiple buffers 40 at intervals around the drive shaft 12, the buffering effect of the buffers 40 between the connector 30 and the support assembly 20 is further improved, thereby further improving the service life of the cutting mechanism 100 and reducing the probability of injury to the operator.

[0107] In the second embodiment, there are also multiple limiting grooves 32 and multiple limiting members 60. The multiple limiting grooves 32 and multiple limiting members 60 correspond one-to-one. Each limiting groove 32 is provided between two adjacent assembly grooves 31, and the multiple limiting members 60 are respectively inserted into the corresponding limiting grooves 32.

[0108] This configuration allows for precise control of the rotation angle of the support component 20 relative to the connector 30, thereby preventing damage to the buffer component 40 due to excessive compression and further preventing large angular deviations between the cutting blade 50 and the drive shaft 12, thus improving the cutting quality of the material being cut by the drive shaft 12 driving the cutting blade 50.

[0109] In both the first and second embodiments, the cutting blades 50 are rigid blades, and the cutting blades 50 are rigidly connected to the support assembly 20. This arrangement helps to improve the cutting efficiency and cutting quality of the cutting mechanism 100.

[0110] In summary, the cutting mechanism 100 of this application embodiment is provided with a rotary drive 10, a support assembly 20, a connector 30, a buffer 40, and a cutting blade 50. When the cutting blade 50 collides with a hard object such as a stone, the drive shaft 12 of the rotary drive 10 is connected to one of the connector 30 and the support assembly 20, and the cutting blade 50 is connected to the other of the connector 30 and the support assembly 20. That is, the drive shaft 12 is connected to the connector 30, and the cutting blade 50 is connected to the support assembly 20; or the drive shaft 12 is connected to the support assembly 20, and the cutting blade 50 is connected to the connector 30. Furthermore, the support assembly 20 can rotate relative to the connector 30 around the drive shaft 12. The buffer 40 is connected to both the connector 30 and the support assembly 20. By providing cushioning between the connector 30 and the support assembly 20, the buffer 40 offsets part of the impact force, reducing the probability of the cutting blade 50 chipping, breaking, or snapping, and also reducing the impact force on the rotating drive 10. This prevents the impact torque from being directly transmitted to the rotating drive 10, thus avoiding damage to it. Consequently, while ensuring cutting efficiency, the service life of the cutting mechanism 100 is also improved. In addition, by providing cushioning between the connector 30 and the support assembly 20, the buffer 40 also reduces the probability of the cutting blade 50 ejecting hard objects, thereby reducing the chance of injury to the operator.

[0111] This application also provides a walking device (not shown in the figure), including the cutting mechanism 100 as described in the above embodiments. The walking device can be a lawnmower robot, harvester, etc.

[0112] The walking device of this application embodiment, by setting the cutting mechanism 100 as described in the above embodiment, not only ensures cutting efficiency but also improves service life and reduces the probability of injury to operators.

[0113] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A cutting mechanism, characterized in that, The device includes a rotary drive, a connector, a support assembly, a buffer, and a cutting blade. The rotary drive has a drive shaft connected to one of the connector and the support assembly. The cutting blade is connected to the other of the connector and the support assembly. The support assembly is rotatable relative to the connector about the drive shaft. The buffer is connected to both the connector and the support assembly and provides cushioning between the connector and the support assembly when the cutting blade is impacted.

2. The cutting mechanism according to claim 1, characterized in that, The connector, the support assembly, and the drive shaft are arranged coaxially.

3. The cutting mechanism according to claim 1, characterized in that, The number of buffer components is multiple, and the multiple buffer components are arranged at intervals around the drive shaft.

4. The cutting mechanism according to claim 1, characterized in that, The support assembly includes a first cover, the drive shaft is connected to one of the connector and the first cover, the connector has an assembly groove, the buffer is disposed in the assembly groove and connected to the first cover, and the cutting blade is connected to the other of the connector and the first cover.

5. The cutting mechanism according to claim 4, characterized in that, The drive shaft is connected to the connector, and the cutting blade is connected to the first cover. The support assembly also includes a second cover, and the first cover and the second cover together form a storage space. The connector is disposed in the storage space, and the drive shaft passes through the first cover or the second cover and is connected to the connector.

6. The cutting mechanism according to claim 5, characterized in that, The first cover has a first mounting groove on the side facing the second cover, and the portion of the buffer member near the first cover is disposed in the first mounting groove; and / or, The second cover has a second mounting groove on the side facing the first cover, and the portion of the buffer member near the second cover is located in the second mounting groove.

7. The cutting mechanism according to claim 4, characterized in that, The first cover and the connector are arranged along the axial direction of the drive shaft. The drive shaft is connected to the first cover, and the cutting blade is connected to the connector. The first cover has a first mounting groove on the side facing the connector, and the portion of the buffer near the first cover is located in the first mounting groove.

8. The cutting mechanism according to claim 7, characterized in that, The first cover has a storage groove on the side facing the connector, the connector is rotatably mounted in the storage groove, and the first mounting groove is opened at the bottom of the storage groove.

9. The cutting mechanism according to claim 7, characterized in that, The drive shaft passes through the first cover and the connector. The support assembly also includes a second cover, which is located on the side of the connector opposite to the first cover and connected to the drive shaft. The second cover is used to restrict the connector from detaching from the drive shaft.

10. The cutting mechanism according to claim 9, characterized in that, The support assembly further includes a first bearing, which is sleeved on the drive shaft and located between the first cover and the connector; and / or The support assembly further includes a second bearing, which is sleeved on the drive shaft and located between the second cover and the connector.

11. The cutting mechanism according to claim 7, characterized in that, The connector is provided with a positioning part, which is inserted and positioned with the cutting blade.

12. The cutting mechanism according to claim 7, characterized in that, The first mounting groove and the assembly groove are both located on one side of the drive shaft and are arranged opposite to each other. The inner wall of the first mounting groove facing the drive shaft is a first arc-shaped wall, and the inner wall of the assembly groove facing the drive shaft is a second arc-shaped wall. Both the first arc-shaped wall and the second arc-shaped wall are recessed towards the drive shaft.

13. The cutting mechanism according to claim 1, characterized in that, The connector has a limiting groove, and the cutting mechanism also includes a limiting member, which is connected to the support assembly and inserted into the limiting groove.

14. The cutting mechanism according to claim 13, characterized in that, The limiting groove is an arc-shaped groove, and the circle in which the extending direction of the limiting groove is located shares the same center with the circle in which the rotation trajectory of the support component is located.

15. The cutting mechanism according to claim 13, characterized in that, The limiting member is located in the middle of the limiting groove.

16. The cutting mechanism according to claim 1, characterized in that, The buffer extends in a direction parallel to the tangent of the circle containing the rotation trajectory of the support assembly.

17. The cutting mechanism according to claim 1, characterized in that, The cutting blade is a rigid blade, and the cutting blade is rigidly connected to the support assembly.

18. The cutting mechanism according to claim 1, characterized in that, The pre-pressure exerted by the buffer on the support assembly is greater than the resistance experienced by the cutting blade during normal operation, but less than the impact force experienced by the cutting blade when it collides with a hard object.

19. A walking device, characterized in that, Includes the cutting mechanism as described in any one of claims 1-18.

Images