CN117136705A - Cutting device and cutting equipment with same - Google Patents

Abstract

The application relates to the technical field of mowers, in particular to a cutting device and cutting equipment with the same, wherein the cutting device is used for cutting plants on the ground and comprises a tray body and a cutting part, the center of the tray body is provided with a driving connecting part, the bottom surface of the tray body gradually inclines towards the ground in the direction of the center pointing to the edge, a protection cavity is arranged in the tray body, the peripheral surface of the tray body is provided with a slot, the slot is communicated with one end of the protection cavity, the bottom surface of the tray body is provided with an opening, and the opening is communicated with the other end of the protection cavity; the cutting member is rotatably connected to the protective cavity, wherein the cutting member is at least partially exposed to the slot during rotation, and the protective cavity is adapted to provide a space for the cutting member to perform a circular movement. The cutting device can realize secondary crushing of broken grass and automatic grass discharge, reduce accumulation of broken grass in the middle of the bottom surface of the disc body, reduce load of the disc body, reduce pressure and friction of the disc body, improve broken grass strength, and is simple in structure, protect cutting parts and improve safety.

Description

Cutting device and cutting equipment with same

Technical Field

The application relates to the technical field of mowers, in particular to a cutting device and cutting equipment with the same.

Background

Along with the development of mower technology, after mower mowing, finely divided grass can be attached to the middle of the cutter head and continuously accumulated, the load of the cutter head is increased, and broken grass and grass to be mowed continuously exert pressure on the cutter head in the accumulating process, so that friction is increased, the cutter head and the cutter blade are continuously worn, and after long-term wear of the cutter blade, the mowing effect is gradually weakened. In addition, the blade of the mower is fixed at the bottom of the cutter head, the structure is complex, the blade and other fixed parts are exposed in the external environment, the blade is easy to collide with hard objects such as stones and the like to generate loss in the mowing process, and the phenomenon of collision and flying out is easy to occur, so that the safety is not facilitated.

Disclosure of Invention

Based on the above, the mowing device provided by the application can reduce accumulation of broken grass in the middle of the bottom surface of the cutterhead, reduce pressure and friction on the cutterhead, improve mowing effect, reduce loss of the cutterhead and ensure safety.

In a first aspect, the present application provides a cutting device for cutting plants on the ground, the cutting device comprising:

the disc body is provided with a driving connecting part at the center, the bottom surface of the disc body is gradually inclined towards the ground in the direction of the center pointing to the edge, a protection cavity is arranged in the disc body, a groove is formed in the peripheral surface of the disc body and is communicated with one end of the protection cavity, an opening is formed in the bottom surface of the disc body, and the opening is communicated with the other end of the protection cavity; and

the cutting component is rotationally connected in the protection cavity, the cutting component at least partially exposes the disc body in the rotation process, and the protection cavity is used for providing a space for the cutting component to realize rotation.

In one embodiment, the tray body comprises a main body portion and a protection unit, the protection unit comprises a bottom wall, a top wall, a side wall and a peripheral wall which are connected with the main body portion, the bottom wall, the top wall, the side wall and the peripheral wall are arranged around to form the protection cavity, the side wall is provided with the slot, the bottom wall is provided with the opening, the cutting component is rotationally connected with the bottom wall, and the cutting component is located on one side of the opening, which is away from the center of the tray body.

In one of the embodiments, the thickness of the bottom wall and the peripheral wall is gradually increased in a direction in which the center of the tray body points to the edge, so that the thickness of the longitudinal section of the protection unit is gradually increased.

In one embodiment, the peripheral wall has a first edge which is a circular arc centered on the rotation axis of the cutting member so that the width of the lateral section of the protection unit gradually increases in the direction in which the center of the disk body points to the edge, the lateral section being a section perpendicular to the thickness direction of the protection unit.

In one embodiment, the side wall has a second edge, and the second edge is an arc centered on the driving connection portion.

In one embodiment, the opening includes a third edge and a fourth edge connected, the third edge being aligned with the peripheral wall, the fourth edge being a circular arc centered about the drive connection.

In one embodiment, the cutting device further comprises a fastener, a countersunk hole for accommodating the head of the fastener is formed in the bottom surface of the tray body, a mounting hole is formed in the cutting component, and the cutting component is rotatably connected to the tray body through the fastener penetrating through the mounting hole and the countersunk hole.

In one embodiment, the cutting device further comprises a plurality of dams, the protection cavities are mutually isolated, the cutting device further comprises a plurality of dams circumferentially arranged at the top of the tray body, and the dams are arranged at intervals with the protection cavities.

In one embodiment, the bottom surface of the tray body is further provided with a guide groove, one end of the guide groove is communicated with the opening, the other end of the guide groove extends towards the center of the tray body, and the depth of the guide groove gradually increases in the direction of pointing the edge of the center of the tray body.

In a second aspect, the present application also provides a cutting apparatus comprising a cutting device and a driving device connected, the cutting device being as described in the first aspect, the driving connection of the cutting device being connected to the driving device, the cutting device being moved by the driving device.

Above-mentioned cutting device can realize the secondary breakage to garrulous grass and automatic row grass, and garrulous grass at disk body bottom surface middle part can throw into the opening along the disk bottom inclined plane under the effect of centrifugal force, and in the protection intracavity, carry out the secondary cutting and discharge protection chamber via cutting member, on the one hand can improve cutting device's garrulous grass intensity, on the other hand can reduce the accumulation of garrulous grass at disk body bottom surface middle part, reduce disk body heavy burden, reduce the pressure and the friction that the garrulous grass of accumulation caused the disk body. In addition, because the cutting part rotates to connect in the protection cavity in the disk body, the protection cavity can play the effect of enclosing the protection to the cutting part, can reduce the collision of cutting part, protects the cutting part, improves the security.

Drawings

Fig. 1 is a schematic perspective view of a cutting device according to an embodiment of the present application.

Fig. 2 is a top view of a cutting device according to an embodiment of the present application.

Fig. 3 is a bottom view of a cutting device according to an embodiment of the present application.

Fig. 4 is a cross-sectional view taken along A-A in fig. 3.

Fig. 5 is an enlarged view at B in fig. 4.

The attached sign indicates: 100. a cutting device; 1. a tray body; 11. a main body portion; 12. a protection unit; 121. a bottom wall; 1211. an opening; 1211a, third edge; 1211b, fourth edge; 122. a top wall; 123. a sidewall; 1231. slotting; 1232. a second edge; 124. an outer peripheral wall; 1241. a first edge; 125. a protection cavity; 2. a drive connection; 3. a cutting member; 4. a fastener; 5. a countersunk hole; 6. a surrounding dam; 7. and a guide groove.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical scheme of the application will be described in connection with specific embodiments.

When the mower is used for mowing, broken grass can adhere to the bottom of the tray body due to moisture in the sticky tape, along with continuous accumulation of the broken grass on the tray bottom, pressure between weeding and the tray bottom is continuously increased, friction is also continuously increased, and a mowing effect is reduced. The blade is usually fixed directly in the blade disc bottom for the part of blade and fixed blade contacts with subaerial stereoplasm thing for a long time, accelerates spare part wearing and tearing and the phenomenon that spare part collision flies out easily appears, is unfavorable for the security.

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a cutting device 100 according to an embodiment of the application, fig. 2 is a top view of the cutting device 100, and fig. 3 is a bottom view of the cutting device 100. An embodiment of the present application provides a cutting device 100, the cutting device 100 is used for cutting plants on the ground, the cutting device 100 comprises a tray body 1 and a cutting component 3, and a driving connection part 2 is arranged at the center of the tray body 1. As shown in fig. 4, fig. 4 is a sectional view taken along the direction A-A in fig. 3, and the bottom surface of the tray body 1 is gradually inclined toward the ground in the direction in which the center points toward the edge. Referring to fig. 5, fig. 5 is an enlarged view of a portion B in fig. 4, a protection cavity 125 is provided in the disc body 1, a groove 1231 is provided on the peripheral surface of the disc body 1, and the groove 1231 is communicated with one end of the protection cavity 125. As shown in fig. 3 and 5, the bottom surface of the tray body 1 is provided with an opening 1211, and the opening 1211 communicates with the other end of the protection cavity 125. The cutting member 3 is rotatably connected to the protective cavity 125, the cutting member 3 at least partially exposing the slot 1231 of the disc body 1 during rotation, and the protective cavity 125 is adapted to provide a space for the cutting member 3 to rotate. According to the cutting device 100 disclosed by the embodiment of the application, the bottom surface of the tray body 1 is set to be the inclined surface, and under the action of centrifugal force, the tray body 1 can overcome the adhesion force between the crushed grass and the bottom surface of the tray body 1, so that the crushed grass enters the protection cavity 125 along the inclined surface through the opening 1211, the crushed grass can be cracked for the second time under the treatment of the cutting part 3, and then is discharged through the notch of the notch 1231, thereby reducing the accumulation of the crushed grass at the bottom of the tray body 1, realizing the automatic grass discharge effect, and reducing the loss caused by friction and pressure. Under the rotation drive of the disk body 1, the cutting part 3 rotates, the cutting part 3 is in passive arrangement, and no additional power source directly drives the rotation. In addition, the parts for fixing the cutting part 3 are correspondingly arranged in the disc body 1, the protection cavity plays a role in enclosing the parts such as the cutting part 3, the collision and the flying-out of the parts can be reduced, and the safety is guaranteed.

In another case, the cutting device 100 moves forward during use, and relative movement is formed between the weeding and cutting device 100, part of the grass can be scraped on the cutting device 3 and screwed into the protection cavity 125 through the slot 1231, and the screwed grass can be discharged from the opening 1211, so that the grass can be discharged from one of the opening 1211 and the slot 1231 regardless of whether the grass enters the protection cavity 125 from the other, the self-cleaning effect of the tray 1 is improved, and the accumulation or scraping of the grass is reduced.

Further, in some embodiments, the cutting member 3 may be connected to the output end of the driving connection portion 2, where the cutting member 3 is actively disposed, and is directly driven to rotate by a power source, so that 360 ° spin can be implemented in the protection cavity 125, and therefore, soft collision is formed between the cutting member 3 and the hard object during operation, and friction loss is reduced.

The number of the protection cavities 125 and the openings 1211 is not limited, and may be, for example, one, two, three, four, five, six, eight, etc., and may be specifically selected according to practical requirements.

The cutting member 3 of the embodiment of the present application may be a circular saw blade, a square blade, a diamond blade, or the like, and the present application is not particularly limited.

In an alternative, when the tray body has a relatively large thickness, the body portion of the cutting device 100 takes the shape of a cylinder, and a groove is formed in the tray body to form a protection cavity, and the cutting member is disposed in the protection cavity. In another alternative, the tray 1 includes a main body 11 and a protection unit 12, and the main body 11 and the protection unit 12 are integrally formed, so that the structure of the cutting device 100 is more compact, and the space utilization of the tray 1 is improved. Referring to fig. 1 and 5, the protection unit 12 includes a bottom wall 121, a top wall 122, a side wall 123, and a peripheral wall 124 connected to the main body 11, and the bottom wall 121, the top wall 122, the side wall 123, and the peripheral wall 124 are enclosed to form a protection cavity 125. The side wall 123 is provided with a slot 1231 and the bottom wall 121 is provided with an opening 1211. The cutting member 3 is rotatably connected to the bottom wall 121. The position where the cutting member 3 is rotatably coupled is located between the opening 1211 and the slot 1231, in other words, the position where the cutting member 3 is rotatably coupled is located on the side of the opening 1211 facing away from the center of the disk body 1. By forming the protection unit 12, the weight of the disk body 1 can be reduced, and the protection units 12 independent of each other can reduce interference between the plurality of cutting members 3 during high-speed rotation, and improve the stability of the cutting device 100, compared with the former method. In addition, due to the blocking effect of the outer circumferential wall 124, sundries such as grass entering from the grooves 1231 can be blocked and discharged through the opening 1211, thereby enhancing the self-cleaning effect.

The number of the protection units 12 is not limited, and may be one, two, three, four, five, six, eight, etc., and may be specifically selected according to practical requirements.

In some embodiments, referring to fig. 1, the thickness of the peripheral wall 124 increases gradually in the direction of the center-pointing edge of the disk body 1. Referring to fig. 5, the thickness of the bottom wall 121 gradually increases in the direction in which the center of the tray body 1 is directed toward the edge. The arrangement is such that the thickness of the longitudinal section of the protection unit 12 gradually increases, the longitudinal direction being the direction perpendicular to the A-A direction. When the cutting member 3 is fixed to the bottom wall 121 by the fastener 4, the bottom wall 121 becomes thicker gradually, so that the longitudinal depth of the bottom wall 121 can be increased, the fastener 4 can be disposed at a relatively thicker position of the bottom wall 121, the contact area with the fastener 4 is increased to provide a more stable force, thereby improving the fixing and supporting effect on the cutting member 3, improving the stability of the protection unit 12, and making the protection unit 12 also less susceptible to impact when subjected to a collision.

Further, with continued reference to fig. 5, in some embodiments, the protective cavity 125 has a thickness greater than the thickness of the cutting member 3, in other words, the top wall 122 has a spacing from a lower surface of the cutting member 3 to an upper surface of the cutting member 3. In this way, in the longitudinal direction, the protection cavity 125 can provide a space for the cutting member 3 to float up and down, so that the height of the cutting member 3 can be adjusted according to the height of the plant when the cutting member 3 cuts the plant with uneven height, grass clamping is reduced, and the working flexibility of the cutting member 3 is improved. In addition, the increase in thickness of the bottom wall 121 increases the distance of the protection cavity 125 from the ground, and can reduce frictional collision of the cutting member 3 disposed in the protection cavity 125 with the ground foreign matter.

The embodiment of the present application is not limited to the specific shape of the protection unit 12, and is not limited to the shapes of the bottom wall 121 and the top wall 122, for example, the bottom wall 121 and the top wall 122 may be square, and the corresponding protection unit 12 may be square-like; the bottom wall 121 and the top wall 122 may be circular, and the corresponding protection unit 12 may be cylindrical-like in shape; or the bottom wall 121 and the top wall 122 may be sector-shaped or sector-ring-shaped, etc.

The cutting member 3 rotating at a high speed generates centrifugal force and vibration, and stress concentration occurs at the corners or corners of the protection unit 12, which may cause stress or deformation of the disk body 1. Preferably, referring to fig. 2, in some embodiments, the peripheral wall 124 has a first edge 1241, the first edge 1241 is a circular arc centered on the rotation axis of the cutting member 3, and the bottom wall 121 and the top wall 122 are also substantially D-shaped after being connected to the peripheral wall 124. Referring to fig. 1, the curved shape of the first edge 1241 of the peripheral wall 124 is the same as the shape of the circumferential track of the rotation of the cutting member 3, and the fixed position of the peripheral wall 124 is slightly offset to one side of the center of the disk body 1 so as not to interfere with the circumferential rotation of the cutting member 3. In other embodiments, the side wall 123 has a second edge 1232, the second edge 1232 is a circular arc centered on the driving connection portion 2, and the second edge 1232 coincides with the peripheral edge of the disc 1. In other words, the side wall 123 defines at least part of the peripheral edge of the tray 1. Therefore, the two sides of the protection unit 12 facing to or departing from the center of the disc body 1 are kept symmetrical, the overall shape of the protection unit 12 is symmetrical, compared with the shape of square and the like, the protection unit 12 is matched with the rotating track of the cutting part 3, and the protection unit 12 can more uniformly disperse stress when being subjected to centrifugal force, so that the breakage or deformation caused by overlarge local stress is avoided. Further, the first and second edges 1241 and 1232 are circular arcs, which can also reduce the installation area, make the structure of the cutting device 100 more compact, and increase the structural stability and balance of the protection unit 12 while improving the space utilization.

Further, with continued reference to fig. 2, in some embodiments, the width of the lateral cross section of the protection unit 12 increases gradually along the direction of the center pointing edge of the disc 1, and the lateral cross section is a cross section perpendicular to the thickness direction of the protection unit 12. Taking a square blade as an example, the required transverse space is gradually increased from the state of radial superposition of the rotary protection unit 12 and the disc body 1 to the process of radial perpendicular of the rotary protection unit 12 and the disc body 1, so that the shape of the protection unit 12 in the embodiment of the application can be well matched with the transverse space of the cutting component 3 in the process of realizing circumferential rotation. In addition, when the cutting member 3 is not in use, it can be completely screwed into the protection cavity 125, realizing an integrated concealable design of the cutting device 100.

In some embodiments, referring to fig. 1, the cutting device 100 further includes a plurality of dams 6, where the dams 6 are circumferentially disposed on top of the tray 1, and the dams 6 are spaced apart from the protection cavity. The side wall 123 of the dam 6 and the protection unit 12 are connected to form a complete circular arc profile. The surrounding dam 6 disperses circumferential stress received by the disc body 1 and improves the structural strength of the disc body 1.

In some embodiments, the cutting device 100 further includes a reinforcing rib disposed on the top of the tray body 1, and the reinforcing rib extends from the center of the tray body 1 to the edge and is connected to the dam 6. Part of the reinforcing bars is also connected to the peripheral wall 124 of the protection unit 12. The reinforcing ribs can disperse radial stress of the disc body 1, and further improve structural strength of the disc body 1.

It should be noted that, in general, the opening 1211 is not formed at the bottom of the disc 1, and when the strength and toughness of the disc 1 are insufficient to withstand the centrifugal force caused by the high-speed rotation, the opening 1211 may cause the disc 1 to be broken, thereby causing a risk. In addition, centrifugal force may increase the edge stress at the opening 1211, which may cause the opening 1211 to expand, thereby accelerating the rupture of the disc 1. Therefore, if the opening 1211 is required to be opened at the bottom of the tray 1, the structural strength, safety and reliability of the tray 1 need to be ensured first. The present application has been described above by increasing the structural strength of the tray 1 through various embodiments, so that the opening 1211 may be opened at the bottom of the tray 1.

To further reduce the impact of the placement of the opening 1211 on the overall strength of the protection unit 12, referring to fig. 1, 2 and 3, in some embodiments, the opening 1211 includes a third edge 1211a and a fourth edge 1211b that are connected, the third edge 1211a is aligned with the peripheral wall 124, and the fourth edge 1211b is a circular arc centered about the driving connection 2. Since the peripheral wall 124 has the circular arc-shaped first outer edge 1241, and the third edge 1211a is also circular arc-shaped after the third edge 1211a is aligned with the peripheral wall 124, the opening 1211 is formed by the circular arc-shaped edge, and the area of the opening 1211 can be further reduced on the premise of ensuring that the crushed grass can enter the opening 1211. Further, since the opening 1211 is sandwiched between the outer peripheral wall 124 and the bottom wall 121, the outer peripheral wall 124 and the bottom wall 121 have a certain thickness, so that both the outer peripheral wall 124 and the bottom wall 121 can uniformly disperse the stress at the edge of the opening 1211.

In some embodiments, the fourth edge 1211b of the opening 1211 is at least partially on the same radial line as the edge of the slot 1231. It will be appreciated that fourth edge 1211b is staggered with respect to the edges of slot 1231 such that opening 1211 and slot 1231 partially correspond. Alternatively, the arc length of the fourth edge 1211b of the opening 1211 is less than the arc length of the edge of the slot 1231 such that the fourth edge 1211b is entirely located on the radial line of the edge of the slot 1231 such that the opening 1211 and the slot 1231 can entirely correspond.

Preferably, the fourth edge 1211b of the opening 1211 is located entirely on the same radial line as the edge of the slot 1231 such that the opening 1211 entirely corresponds to the notch of the slot 1231. Increasing the probability of grass entering through opening 1211 and exiting through slot 1231 and increasing the probability of grass entering through slot 1231 and exiting through opening 1211, reducing the drag on the grass.

In some embodiments, referring to fig. 3, the bottom surface of the tray 1 is further provided with a guiding groove 7, one end of the guiding groove 7 is communicated with the opening 1211, and the other end extends toward the center of the tray 1, and the depth of the guiding groove 7 gradually increases in the direction of the center pointing edge of the tray 1. The depth of the guide groove 7 is gradually increased so that the tip thereof directly faces the notch, so that the crushed grass can be discharged from the notch through the opening 1211 along the guide groove 7 by centrifugal force, improving the grass discharging capability of the cutting device 100. The present application does not limit the number of the guide grooves 7.

In some embodiments, referring to fig. 5, the cutting device 100 further includes a fastener 4, the bottom surface of the tray 1 is provided with a countersunk hole 5 for accommodating the head of the fastener 4, the cutting member 3 is provided with a mounting hole, and the cutting member 3 is rotatably connected to the tray 1 by passing through the mounting hole and the countersunk hole 5 by the fastener 4. The fastener 4 can be prevented from being exposed to the external environment, and from being knocked away by collision with a hard object. The fastener 4 of the embodiment of the present application may be a screw, a bolt, a bearing, a sleeve, etc. Specifically, in some embodiments, the bottom wall 121 of the protection unit 12 is provided with the counter bore 5, the through hole is formed in the top wall 122, and the shank of the fastener 4 passes through the counter bore 5, the mounting hole and the through hole in this order, since the bottom wall 121 becomes thicker gradually, it is possible to provide a sufficient depth for the head of the fastener 4 to be disposed inside the counter bore 5 without being exposed to the outside.

In a second aspect, the present application also provides a cutting apparatus comprising a cutting device 100 and a driving device connected, the cutting device 100 being as the cutting device 100 of the first aspect, the driving connection 2 of the cutting device 100 being connected to the driving device, the cutting device 100 being moved by the driving device. The driving device can be an electric motor, a pneumatic motor, a hydraulic cylinder and the like. The cutting device can be agricultural garden mechanical devices such as a weeding machine, a crop harvester, a trimmer and the like.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. A cutting device for cutting plants on the ground, the cutting device comprising:

the disc body is provided with a driving connecting part at the center, the bottom surface of the disc body is gradually inclined towards the ground in the direction of the center pointing to the edge, a protection cavity is arranged in the disc body, a groove is formed in the peripheral surface of the disc body and is communicated with one end of the protection cavity, an opening is formed in the bottom surface of the disc body, and the opening is communicated with the other end of the protection cavity; and

the cutting component is rotationally connected in the protection cavity, the cutting component at least partially exposes the slot in the rotation process, and the protection cavity is used for providing a space for the cutting component to realize rotation.

2. The cutting device according to claim 1, wherein the tray body comprises a main body portion and a protection unit, the protection unit comprises a bottom wall, a top wall, a side wall and a peripheral wall connected with the main body portion, the bottom wall, the top wall, the side wall and the peripheral wall are arranged around to form the protection cavity, the side wall is provided with the slot, the bottom wall is provided with the opening, the cutting member is rotatably connected with the bottom wall, and the rotational connection position of the cutting member is located on one side of the opening facing away from the center of the tray body.

3. The cutting device according to claim 2, wherein the thickness of the bottom wall and the peripheral wall is gradually increased in a direction of the center-directed edge of the tray body, so that the thickness of the longitudinal section of the protection unit is gradually increased.

4. The cutting device according to claim 2, wherein the peripheral wall has a first edge which is a circular arc centered on the rotation axis of the cutting member so that the width of the lateral section of the protection unit gradually increases in a direction in which the center of the disk body is directed toward the edge, the lateral section being a section perpendicular to the thickness direction of the protection unit.

5. The cutting device of claim 2, wherein the sidewall has a second edge that is a circular arc centered about the drive connection.

6. The cutting device of claim 2, wherein the opening includes a third edge and a fourth edge connected, the third edge aligned with the peripheral wall, the fourth edge being a circular arc centered about the drive connection.

7. The cutting device of any one of claims 1 to 6, further comprising a fastener, wherein the bottom surface of the tray body is provided with a countersunk hole for receiving the head of the fastener, wherein the cutting member is provided with a mounting hole, and wherein the cutting member is rotatably connected to the tray body by passing through the mounting hole and the countersunk hole through the fastener.

8. The cutting device of any one of claims 1 to 6, wherein the protection cavities are plural and isolated from each other, the cutting device further comprising plural weirs circumferentially disposed on top of the tray body, the weirs being sequentially spaced from the protection cavities.

9. The cutting device according to any one of claims 1 to 6, wherein the bottom surface of the tray body is further provided with a guide groove, one end of the guide groove communicates with the opening, the other end extends toward the center of the tray body, and the depth of the guide groove gradually increases in a direction in which the center of the tray body points to the edge.

10. A cutting apparatus comprising a cutting device and a drive device connected, the cutting device being as claimed in any one of claims 1 to 9, the drive connection of the cutting device being connected to the drive device, the cutting device being moved by the drive device.