Cutter head and robot thereof

Abstract

The utility model belongs to the technical field of power tools, and discloses a cutterhead and a robot thereof, the cutterhead comprises a cutterhead mounting part and a cutterhead connecting part, the cutterhead mounting part is used for being connected with a motor output shaft, and a first blocking piece is arranged on the side, away from the ground, of the cutterhead mounting part; the cutterhead connecting part is used for being connected with a blade, the cutterhead connecting part and the cutterhead mounting part rotate around the axis of the motor output shaft, and the first blocking piece surrounds the periphery of the motor output shaft; the first blocking piece comprises a fixed end, the fixed end is the end, close to the cutterhead mounting part, of the first blocking piece and is connected with the cutterhead mounting part, and at least part of the first blocking piece extends in the direction away from the motor output shaft based on the fixed end. The horizontal distance between at least part of the first blocking piece and the axis of the motor output shaft is larger than the horizontal distance between the fixed end and the axis of the motor output shaft. The possibility that a cut object is wound on the output shaft of the motor is reduced, and the effect that the output shaft of the motor is prevented from being wound and blocked by the cut object is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of power tools, and more specifically, to a cutter head and a robot thereof. Background Art

[0002] Against the backdrop of rapidly advancing modern technology, the use of robotic weeding is gradually transforming traditional gardening practices. With rising environmental awareness and a faster pace of life, people are increasingly demanding convenient and efficient services. Robotic weeding, with its intelligent, convenient, and environmentally friendly features, has become an ideal choice for modern home garden management.

[0003] Currently, robots used for weeding usually include a housing, a motor, a blade disc, and a blade mounted on the blade disc. The blade disc drives the blade to rotate to cut the object. Existing blade discs are usually shaped like an inverted dish, that is, the blade disc gradually rises from the edge toward the middle part of the blade disc, so that the height of the middle part of the blade disc from the ground is greater than the height of the edge part from the ground, reducing the contact between the blade disc and the object to be cut and reducing the rotational resistance of the motor. However, when the blade disc encounters a vine-like object to be cut, the cut part of the vine-like object forms a ring-shaped winding as the blade disc rotates at high speed. Continuous winding will cause the winding to move along the raised structure of the blade disc toward the middle part of the blade disc, and eventually wind around the output shaft of the motor, increasing the driving load of the motor and reducing its service life.

[0004] Regarding the above technical means, there is a defect that the output shaft of the motor is easily entangled and blocked by the cutting material when the cutter disc is working. Utility Model Content

[0005] The embodiment of the present application provides a cutter disc and a robot thereof, which can reduce the possibility of the cut material being entangled on the output shaft, and ensure that the output shaft of the motor is not blocked by the cut material.

[0006] The present application provides a cutter head and a robot thereof adopting the following technical solutions:

[0007] In a first aspect, the present application provides a cutter head, which adopts the following technical solution:

[0008] A cutter head, characterized by comprising:

[0009] A cutterhead mounting portion is used to connect to the motor output shaft; a first blocking member is provided on the side of the cutterhead mounting portion away from the ground;

[0010] The cutterhead connection part is used to connect with the blade, and the cutterhead connection part and the cutterhead mounting part both rotate around the axis of the motor output shaft.

[0011] The first blocking member is arranged around the outer circumference of the output shaft, and the first blocking member includes a fixed end, which is an end of the first blocking member close to the cutter disc mounting portion and is connected to the cutter disc mounting portion. At least part of the first blocking member extends in a direction away from the motor output shaft based on the fixed end, and the horizontal distance between at least part of the first blocking member and the axis of the motor output shaft is greater than the horizontal distance between the fixed end and the axis of the motor output shaft.

[0012] Optionally, at least a portion of the first blocking member is gradually inclined in a direction away from the motor output shaft, and an angle between the first blocking member and the motor output shaft is less than 90 degrees.

[0013] Optionally, the first blocking member further includes an extension end, which is an end of the first blocking member away from the cutter disc mounting portion, and the horizontal distance between the extension end and the axis of the motor output shaft is greater than the horizontal distance between the fixed end and the axis of the motor output shaft.

[0014] Optionally, the difference in projection radius between the orthographic projection of the fixed end projected onto the cutter disc mounting portion and the orthographic projection of the extending end projected onto the cutter disc mounting portion is 1.5 mm-5 mm.

[0015] Optionally, the first blocking member is gradually bent from the fixed end toward the extending end, and an end surface of the first blocking member facing away from the output shaft is an arc-shaped surface.

[0016] Optionally, the first blocking member is used to fit with a motor housing on which the motor is installed, and one end of the motor housing close to the cutter disc mounting portion is located in a space formed around the extending end.

[0017] Optionally, the first blocking member is composed of a plurality of blocking teeth, and recesses are formed between adjacent blocking teeth, and the recesses are used to connect the spaces on both sides of the first blocking member.

[0018] Optionally, a plurality of the blocking teeth are arranged in a circular array along the output shaft; and the cross-sectional area of ​​the blocking teeth gradually decreases in the direction from the fixed end to the extending end.

[0019] Optionally, a second blocking member is provided on the side of the cutter disc mounting portion away from the ground; a number of the blocking teeth are connected to form two groups of blocking rings, and a feed gap is provided between the two groups of blocking rings for debris or accumulated water to flow out, and the second blocking member is provided corresponding to the feed gap.

[0020] Optionally, the second blocking member includes a fixing seat and a brush, the fixing seat is arranged on one side of the motor output shaft, one end of the brush is arranged in the fixing seat, and the end of the brush away from the fixing seat is used to interference fit with the motor housing to prevent the cutting material from entering the space enclosed by the first blocking member.

[0021] Optionally, the orthographic projection of the end of the brush away from the fixing seat projected onto the vertical plane is located between the blocking tooth and the motor housing, and the end of the brush away from the fixing seat blocks the gap between the blocking tooth and the motor housing.

[0022] Optionally, the cutter disc mounting portion is provided with a connecting piece, a fixing piece and a connecting groove, the connecting piece is provided on the side of the cutter disc mounting portion away from the ground, the fixing piece includes an operating part and a clamping part, the operating part is located on the side of the cutter disc mounting portion close to the ground, the clamping part passes through the connecting groove and rotates with the connecting piece, and the operating part is rotated to make the clamping part engage or disengage with the connecting piece.

[0023] In a second aspect, the present application provides a robot that adopts the following technical solution:

[0024] A robot includes a cutting body and a walking body. The cutting body includes a cutter disc, a motor and a shell as described above. The shell includes a motor housing and a cover. The motor is arranged in the motor housing. The cutter disc is located at one end of the motor output shaft and is arranged in the cover. The motor output shaft passes through the motor housing and the cover and is connected to the cutter disc and drives the cutter disc to rotate.

[0025] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0026] The first blocking member is arranged around the outer periphery of the output shaft and is located at the outer periphery of the rotating axis of the cutter disc mounting part, providing protection for the rotating axis of the cutter disc mounting part. During the rotation of the cutter disc, the vine-shaped or long winding is cut and blocked by the first blocking member. The first blocking member guides the winding so that the winding is wound to the outside of the first blocking member away from the motor output shaft. The cutter disc continues to rotate so that the winding wound to the outside of the first blocking member gradually moves and disperses in the direction away from the motor output shaft based on the fixed end during the rotation process, thereby disengaging from the first blocking member, avoiding the vine-shaped or long winding from moving to the output shaft and the rotating axis of the cutter disc mounting part, thereby reducing the possibility of the cut object being wound around the output shaft, and ensuring that the motor output shaft is free from being blocked by the cut object. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the overall structure of a cutter head disclosed in Example 1 of the present application;

[0029] Figure 2 This is a schematic diagram of another perspective of a cutter head disclosed in Example 1 of the present application;

[0030] Figure 3 A cross-sectional view of a cutter head disclosed in Example 1 of the present application;

[0031] Figure 4 This is a front view of a cutter head disclosed in Example 2 of the present application;

[0032] Figure 5 A cross-sectional view of a cutter head, a motor, and a cover disclosed in Example 1 of the present application;

[0033] Figure 6 for Figure 5 A local enlarged view of point A;

[0034] Figure 7 This is a schematic structural diagram of a cutter head disclosed in Example 3 of the present application, highlighting the first and second blocking members and the motor housing;

[0035] Figure 8 This is a structural schematic diagram of a cutter head disclosed in Example 4 of the present application, highlighting the first blocking member, the second blocking member and the motor housing.

[0036] Description of reference numerals:

[0037] 1. Cutter disc; 11. Cutter disc mounting portion; 12. Cutter disc connecting portion; 13. Cutter disc transition portion; 14. First blocking member; 141. Extension end; 142. Fixed end; 143. Feed gap; 15. Second blocking member; 151. Fixed seat; 152. Brush; 16. Connecting member; 17. Fixing member; 171. Operating portion; 172. Clamping portion; 18. Connecting groove; 2. Motor; 3. Motor housing; 4. Cover. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings.

[0039] The embodiment of the present application provides a cutter disc and a robot thereof, which has the effect of reducing the possibility of the cut material being entangled on the output shaft, and ensuring that the output shaft of the motor is not blocked by the cut material.

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0041] The terms "first," "second," "third," "fourth," and the like in the specification and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Existing cutterheads typically have an inverted vessel shape, meaning they gradually rise from the edge toward the center. This causes the center of the cutterhead to be higher above the ground than the edge, minimizing contact between the cutterhead and the material being cut, and lowering the rotational resistance of the motor 2. However, when such cutterheads encounter strips or vine-shaped material, the cut vines form a coiled mass as the cutterhead rotates at high speed. This continuous coiling causes the mass to move along the cutterhead's raised structure toward the center, ultimately becoming entangled with the output shaft of the motor 2. This increases the drive load on the motor 2 and reduces its service life. To address the aforementioned technical issues, the present application provides a cutterhead and a robot for this purpose.

[0043] This application discloses a robot, please refer to Figure 1 and Figure 4The robot includes a cutting body and a walking body. The cutting body is used to cut lawns, etc., while the walking body provides power to drive the cutting body. The cutting body includes a cutterhead 1, a motor 2, and a housing. The housing includes a motor housing 3 and a cover 4. The motor 2 is disposed within the motor housing 3. The cutterhead 1 is located at one end of the motor output shaft and is disposed within the cover 4. The motor output shaft passes through the motor housing 3 and the cover 4 and is connected to the cutterhead 1, driving the cutterhead 1 to rotate.

[0044] See also Figures 1 to 3 , is an embodiment of the cutterhead 1 in the present application, comprising a cutterhead mounting portion 11, a cutterhead connection portion 12, and a cutterhead transition portion 13. The cutterhead mounting portion 11 is connected to the motor output shaft, the cutterhead connection portion 12 is fixedly connected to the blade, and the cutterhead transition portion 13 is located between the cutterhead mounting portion 11 and the cutterhead connection portion 12. Both the cutterhead connection portion 11 and the cutterhead mounting portion 11 rotate about the axis of the motor output shaft. In this embodiment, the cutterhead connection portion 12, the cutterhead transition portion 13, and the cutterhead mounting portion 11 are integrally formed; under the action of the motor output shaft, the cutterhead connection portion 12, the cutterhead transition portion 13, and the cutterhead mounting portion 11 rotate synchronously. Specifically, the cutter disc connection portion 12 is approximately flat to facilitate cutting operations; the slope of the cutter disc transition portion 13 is greater than the slope of the cutter disc mounting portion 11, and the cutter disc transition portion 13 is used to form a raised structure in the middle of the cutter disc 1 to reduce the contact of the cutter disc 1 with the cutting object; the cutter disc mounting portion 11 is located above the cutter disc connection portion 12, that is, the distance between the cutter disc mounting portion 11 and the ground is greater than the distance between the cutter disc connection portion 12 and the ground, and the slope of the cutter disc mounting portion 11 is relatively gentle, and is used to connect to the motor output shaft. The motor output shaft passes through the rotation axis of the cutter disc mounting portion 11 to realize the rotation of the cutter disc 1.

[0045] See also Figure 4 In some other embodiments, the cutter disc transition portion 13 is used to form a concave structure in the middle of the cutter disc 1, and the cutter disc transition portion 13 and the cutter disc mounting portion 11 are both located below the cutter disc connecting portion 12, that is, the distance between the cutter disc mounting portion 11 and the ground is smaller than the distance between the cutter disc connecting portion 12 and the ground.

[0046] See also Figure 1 、 Figure 2 as well as Figure 6The cutterhead mounting portion 11 is provided with a connecting member 16, a fixing member 17, and a connecting groove 18. The connecting member 16 is fixedly connected to the motor housing 3. The connecting member 16 is located at one end of the motor housing 3 and is provided on the side of the cutterhead mounting portion 11 away from the ground. The fixing member 17 includes an operating portion 171 and a clamping portion 172. The operating portion 171 and the clamping portion 172 are integrally formed. The operating portion 171 is located on the side of the cutterhead mounting portion 11 close to the ground. The clamping portion 172 is passed through the connecting groove 18 and rotates with the connecting member 16. The operating portion 171 is rotated to engage or disengage the clamping portion 172 with the connecting member 16. By rotating the operating portion 171, the operating portion 171 drives the clamping portion 172 to rotate synchronously, and the corresponding clamping portion 172 is engaged or disengaged with the connecting member 16. The operation is simple, and it is convenient to install or replace the cutterhead 1.

[0047] See also Figure 1 and Figure 5 To reduce the possibility of cut material entangled with the output shaft and ensure that the motor output shaft is free of cut material entanglement and obstruction, a first blocking member 14 is provided on the side of the cutterhead mounting portion 11 facing away from the ground. The first blocking member 14 surrounds the outer circumference of the motor output shaft to intercept cut material. Due to the shallow slope of the cutterhead mounting portion 11, it is easier to guide the entangled material to the position of the motor output shaft. In this embodiment, the first blocking member is preferably located at the junction of the cutterhead mounting portion 11 and the cutterhead transition portion 13.

[0048] See also Figure 5 and Figure 6The first blocking member 14 includes a fixed end 142 and an extended end 141. The fixed end 142 is the end of the first blocking member 14 that is closest to the cutterhead mounting portion 11 and is fixedly connected to the cutterhead mounting portion 11. At least a portion of the first blocking member 14 extends away from the motor output shaft based on the fixed end 142. The horizontal distance between at least a portion of the first blocking member 14 and the axis of the motor output shaft is greater than the horizontal distance between the fixed end 142 and the axis of the motor output shaft. In this embodiment, the fixed end 142 and the extended end 141 are integrally formed. The extended end 141 is the end of the first blocking member 14 that is away from the cutterhead mounting portion 11. The horizontal distance between the extended end 141 and the axis of the motor output shaft is greater than the horizontal distance between the fixed end 142 and the axis of the motor output shaft. It can be understood that the first blocking member 14 is arranged around the outer periphery of the output shaft and is located at the periphery of the rotation axis of the cutter disc mounting portion 11. The enclosed space of the first blocking member 14 provides protection for the motor output shaft and the rotation axis of the cutter disc mounting portion 11; during the rotation of the cutter disc, the vine-shaped or long winding material is cut and blocked by the first blocking member 14. The first blocking member 14 guides the winding material so that the winding material is wound to the outside of the first blocking member 14 to stay away from the position of the motor output shaft, and the cutter disc continues to rotate based on the horizontal distance between the fixed end 142 and the axis of the motor output shaft. The horizontal distance between the extension end 141 and the axis of the motor output shaft is smaller than that, so that the windings wound around the outside of the first blocking member 14 gradually move and disperse in the direction away from the motor output shaft based on the fixed end 142 during the rotation process, so that the windings at the extension end 141 are far away from the position of the motor output shaft, which facilitates the windings to break away from the first blocking member 14, avoiding the vine-shaped or long windings from gathering on the output shaft and the rotation axis of the cutter disc mounting part 11, thereby reducing the possibility of the cutting material being wound around the motor output shaft, and ensuring that the motor output shaft is free from being blocked by the cutting material.

[0049] In some other embodiments, the first blocking member 14 is arranged in an integral ring shape. Since the horizontal distance between the fixed end 142 and the axis of the motor output shaft is smaller than the horizontal distance between the extension end 141 and the axis of the motor output shaft, the first blocking member 14 may be arranged in a trumpet shape; or, the horizontal distance between the fixed end 142 of the first blocking member 14 and the axis of the motor output shaft is equal to the horizontal distance between the extension end 141 and the axis of the motor output shaft, and the first blocking member 14 is arranged in a cylindrical shape; or, the first blocking member 14 is composed of at least two semi-rings arranged at intervals, wherein the radii of the two semi-rings may be the same or different.

[0050] In this embodiment, the fixed end 142 is generally annular in shape. In other embodiments, the fixed end 142 may also be in other shapes such as a rectangular ring. The first blocking member 14 is at least partially tilted in a direction away from the cutter disc mounting portion 11, and the angle between it and the motor output shaft is less than 90 degrees. When the winding material is wound, based on the principle of rotational winding, the tilted portion of the first blocking member 14 is conducive to guiding the winding material to move downward toward the cutter disc mounting portion 11 or be thrown away by the centrifugal force of the rotation, so as to stay away from the position space of the motor output shaft and prevent the winding material from entering the enclosed space of the first blocking member 14.

[0051] To enhance the guiding capability of the first blocking member 14, the first blocking member 14 is gradually bent from the fixed end 142 toward the extended end 141, and the end surface of the first blocking member 14 facing away from the motor output shaft is an arcuate surface. It is understood that at a fixed inclination angle, the slope between the arcuate surface of the first blocking member 14 facing away from the output shaft and the horizontal plane gradually decreases, with the slope at the extended end 141 being the smallest. This arcuate surface enhances the guiding capability of the extended end 141 of the first blocking member 14. Furthermore, the difference in projection radius between the orthographic projection of the fixed end 142 projected onto the cutterhead mounting portion 11 and the orthographic projection of the extended end 141 projected onto the cutterhead mounting portion 11 is 1.5 mm to 5 mm. In this embodiment, the difference in projection radius is preferably 2.5 to 4 mm.

[0052] See also Figure 6 During the rotation of the cutterhead 1, the first stopper 14 is spaced apart from the motor housing 3, on which the motor 2 is mounted, to avoid collision. This reduces collision and friction between the motor housing 3 and the first stopper 14 during rotation, thereby increasing the service life of the first stopper 14 and the motor housing 3. In some embodiments, the first stopper 14 is located below the motor housing 3, and a gap exists between the extended end 141 of the first stopper 14 and the end surface of the motor housing 3. In other words, the distance between the first stopper 14 and the cutterhead mounting portion 11 is less than the distance between the end surface of the motor housing 3 and the cutterhead mounting portion 11.

[0053] See also Figure 7In some other embodiments, the end of the motor housing 3 adjacent to the cutterhead mounting portion 11 is located within the space surrounded by the extension end 141, and a gap is defined between the sidewall of the motor housing 3 and the extension end 141 of the first blocking member 14. Specifically, when the first blocking member 14 overlaps with the motor housing 3 in the vertical direction, the first blocking member 14 is ensured to not contact the motor housing 3 in the horizontal direction. The dimensions of the first blocking member 14 may be larger than those of the motor housing 3, and the distance between the first blocking member 14 and the cutterhead mounting portion 11 is greater than the distance between the end face of the motor housing 3 and the cutterhead mounting portion 11. This facilitates the first blocking member 14 blocking the gap between the cutterhead mounting portion 11 and the end face of the motor housing 3, further reducing the amount of cut objects that enter the space enclosed by the first blocking member 14 and further resolving the problem of the motor output shaft being entangled and blocked by cut objects.

[0054] See also Figure 1 and Figure 6 In order to facilitate the discharge of impurities such as cutting debris or accumulated water from the enclosed area of ​​the first blocking member 14, the first blocking member 14 is composed of a plurality of blocking teeth, and a recess is formed between adjacent blocking teeth, and the recess is used to connect the spaces on both sides of the first blocking member 14. The setting of the recess improves the possibility of the enclosed space of the first blocking member 14 being connected to the outside world. On the other hand, the setting of the recess is conducive to reducing materials, thereby reducing the weight of the cutter disc 1. In this embodiment, a plurality of blocking teeth are arranged in a circular array along the circumference of the motor output shaft, and the cross-sectional area of ​​the blocking teeth gradually decreases from the fixed end 142 to the extension end 141. A plurality of blocking teeth form a tip at the end away from the cutter disc mounting portion 11, and the tip can reduce the friction of direct or indirect contact with the motor housing 3.

[0055] In other embodiments, the plurality of blocking teeth may also be arranged in other annular shapes; the lower end of the recess may be arranged to be flush with the end face of the cutter disc mounting portion 11, so that impurities such as cutting debris or accumulated water can be more easily discharged from the enclosed area of ​​the first blocking member 14.

[0056] See also Figure 3 and Figure 7 A second blocking member 15 is provided on the side of the cutter disc mounting portion 11 away from the ground. The second blocking member 15 is arranged concentrically with the first blocking member 14 and the motor output shaft. The second blocking member 15 is located on the side of the first blocking member 14 away from the output shaft. The second blocking member 15 is used to further intercept and block the cutting object.

[0057] Specifically, two sets of second blocking members 15 are provided, symmetrically arranged along the center of the output shaft. The second blocking members 15 include a fixing base 151 and a brush 152. The fixing base 151 is located on one side of the motor output shaft. One end of the brush 152 is detachably mounted within the fixing base 151, facilitating replacement of the brush 152. The end of the brush 152, away from the fixing base 151, is designed to form an interference fit with the motor housing 3 to prevent cut materials from entering the space enclosed by the first blocking member 14.

[0058] In this embodiment, a plurality of blocking teeth are connected to form two sets of blocking rings, and a feed gap 143 is provided between the two sets of blocking rings for debris or accumulated water to flow out. The second blocking member 15 is provided corresponding to the feed gap 143, that is, the fixing seat 151 and the brush 152 are both provided corresponding to the feed gap 143. Since the feed gap 143 does not have an extended protrusion, it can better discharge debris or accumulated water from the enclosed area of ​​the first blocking member 14. At the same time, the fixing seat 151 and the brush 152 block the feed gap 143, reducing the possibility of cut materials entering the enclosed area of ​​the first blocking member 14 through the feed gap 143.

[0059] See also Figure 8 In some other embodiments, the orthographic projection of the end of the brush 152 away from the fixing seat 151 projected onto the vertical plane is located between the blocking teeth and the motor housing 3, and the end of the brush 152 away from the fixing seat 151 blocks the gap between the blocking teeth and the motor housing 3. It is understandable that the end of the brush 152 away from the fixing seat 151 can block the gap between the blocking teeth and the outer wall of the motor housing 3. The side resistance of the brush 152 is slightly lacking, and most of the windings exert lateral forces on the surrounding walls of the brush 152. With this solution, the resistance surface of the brush 152 is set at the top, achieving a better blocking effect and further preventing the windings from entering the enclosed space of the first blocking member 14 from above.

[0060] In the process of the motor output shaft driving the cutter disc 1 to rotate, the cut objects and vine-like or long windings are blocked by the fixed end 142 and the extension end 141 of the first blocking member 14, and the windings are guided so that the windings gradually move away from the position of the motor output shaft; at the same time, the second blocking member 15 further blocks the windings to reduce the cut objects from entering the space enclosed by the first blocking member 14, thereby avoiding the vine-like or long windings from moving to the output shaft and the rotation axis of the cutter disc mounting part 11, thereby reducing the possibility of the cut objects being wound around the motor output shaft, and ensuring that the motor output shaft is free from being blocked by the cut objects.

[0061] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutterhead, characterized in that: include: A cutterhead mounting portion is used to connect to the motor output shaft; a first blocking member is provided on the side of the cutterhead mounting portion away from the ground; The cutterhead connection part is used to connect with the blade, and the cutterhead connection part and the cutterhead mounting part both rotate around the axis of the motor output shaft. The first blocking member is arranged around the outer circumference of the output shaft, and the first blocking member includes a fixed end, which is an end of the first blocking member close to the cutter disc mounting portion and is connected to the cutter disc mounting portion. At least part of the first blocking member extends in a direction away from the motor output shaft based on the fixed end, and the horizontal distance between at least part of the first blocking member and the axis of the motor output shaft is greater than the horizontal distance between the fixed end and the axis of the motor output shaft.

2. A cutter head according to claim 1, characterized in that: At least a portion of the first blocking member is gradually inclined away from the motor output shaft, and an angle between the first blocking member and the motor output shaft is less than 90 degrees.

3. The cutter head according to claim 1, characterized in that: The first blocking member also includes an extension end, which is an end of the first blocking member away from the cutter disc mounting portion, and a horizontal distance between the extension end and the axis of the motor output shaft is greater than a horizontal distance between the fixed end and the axis of the motor output shaft.

4. A cutter head according to claim 3, characterized in that: The difference in projection radius between the orthographic projection of the fixed end projected onto the cutter disc mounting portion and the orthographic projection of the extending end projected onto the cutter disc mounting portion is 1.5 mm to 5 mm.

5. The cutter head according to claim 3, characterized in that: The first blocking member is gradually bent from the fixed end toward the extending end, and an end surface of the first blocking member facing away from the motor output shaft is an arc-shaped surface.

6. The cutter head according to claim 3, characterized in that: The first blocking member is used to be loosely fitted with a motor housing on which the motor is mounted, and one end of the motor housing close to the cutter disc mounting portion is located in a space formed by the extending end.

7. The cutter head according to claim 3, characterized in that: The first blocking member is composed of a plurality of blocking teeth, and recesses are formed between adjacent blocking teeth. The recesses are used to connect spaces on both sides of the first blocking member.

8. The cutter head according to claim 7, characterized in that: A plurality of the blocking teeth are arranged in a circumferential array along the output shaft; the cross-sectional area of ​​the blocking teeth gradually decreases from the fixed end to the extending end.

9. The cutter head according to claim 7, characterized in that: A second blocking member is provided on the side of the cutter disc mounting portion away from the ground; a plurality of the blocking teeth are connected to form two groups of blocking rings, and a feed gap is provided between the two groups of blocking rings for debris or accumulated water to flow out, and the second blocking member is provided corresponding to the feed gap.

10. The cutter head according to claim 9, characterized in that: The second blocking member includes a fixing seat and a brush. The fixing seat is arranged on one side of the motor output shaft. One end of the brush is arranged in the fixing seat. The end of the brush away from the fixing seat is used to interference fit with the motor housing to prevent the cutting material from entering the space enclosed by the first blocking member.

11. The cutter head according to claim 10, characterized in that: The orthographic projection of the end of the brush away from the fixing seat projected onto the vertical plane is located between the blocking tooth and the motor housing, and the end of the brush away from the fixing seat blocks the gap between the blocking tooth and the motor housing.

12. The cutter head according to claim 1, characterized in that: The cutter disc mounting portion is provided with a connecting piece, a fixing piece and a connecting groove. The connecting piece is provided on the side of the cutter disc mounting portion away from the ground. The fixing piece includes an operating part and a clamping part. The operating part is located on the side of the cutter disc mounting portion close to the ground. The clamping part passes through the connecting groove and rotates with the connecting piece. The operating part is rotated to make the clamping part engage or disengage with the connecting piece.

13. A robot, characterized in that: It includes a cutting body and a walking body, the cutting body includes a cutter disc, a motor and a shell as described in any one of claims 1 to 12, the shell includes a motor housing and a cover shell, the motor is arranged in the motor housing, the cutter disc is located at one end of the motor output shaft and is arranged in the cover shell, the motor output shaft passes through the motor housing and the cover shell and is connected to the cutter disc and drives the cutter disc to rotate.

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