Cutter head assembly and mowing robot

Abstract

The utility model discloses a cutter head assembly which comprises a driving device, a cutter head and a cutter head, the cutterhead device comprises a movable bearing and at least one blade arranged in the circumferential direction, and after the movable bearing is partially in driving connection with the driving device, the blade rotates around the central axis of the cutterhead device; and the protection device is oppositely arranged at the bottom of the cutter head device and movably connected with part of the movable bearing, and the protection device can rotate relative to the cutter head device. According to the scheme, the protection device is arranged at the bottom of the cutterhead device, the blades in the cutterhead device are driven by the driving device to rotate, and the movable bearing in the cutterhead device can drive the protection device to rotate together, so that the protection device can generate friction with an external object, and the blades in the cutterhead device do not generate friction with the external object; according to the mowing robot, the influence of external objects on the mowing efficiency of the blades can be avoided, meanwhile, due to blocking of the protection device, the probability that the external objects enter the cutter head device is reduced, and the mowing performance of the mowing robot can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mowing robot cutter head technical field, especially a cutter head assembly and mowing robot. BACKGROUND

[0002] The mowing robot is an automatic robot applied to a courtyard area, integrates a walking part and a mowing part, the mowing part is arranged at the bottom of the body of the mowing robot, so that the mowing robot can easily complete the mowing task during walking. However, the current mowing robot also faces some challenges: the mowing part is located at the bottom, the blades on the part are easy to rub with stones, grasses and other objects on the ground, which not only may interfere with the effective operation of the blades, but also may reduce the overall mowing efficiency of the mowing robot. At the same time, the above objects may invade the internal structure of the mowing part, further affecting the mowing performance of the mowing robot.

[0003] Therefore, the person skilled in the art needs to find a new technical solution to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model embodiment aims at providing a cutter head assembly, which can solve the technical problem that the blades in the mowing assembly are easy to rub with objects on the ground and affect the mowing performance in the prior art.

[0005] The utility model embodiment solves the technical problem by adopting the following technical scheme:

[0006] The cutter head assembly disclosed in the application comprises:

[0007] A driving device;

[0008] A cutter head device comprising a movable bearing and at least one blade arranged in a circumferential direction, a part of the movable bearing being drivingly connected to the driving device, and the blade rotating around a central axis of the cutter head device;

[0009] A protection device oppositely arranged at the bottom of the cutter head device and movably connected to the part of the movable bearing, the protection device being capable of rotating relative to the cutter head device.

[0010] Optionally, the movable bearing comprises an inner ring and an outer ring connected to each other, the inner ring being drivingly connected to the driving device, and the outer ring being movably connected to the protection device.

[0011] Optionally, the movable bearing comprises an inner ring and an outer ring connected to each other, the inner ring being drivingly connected to the protection device, and the outer ring being movably connected to the driving device.

[0012] Optionally, the driving device is provided with a driving shaft, the driving shaft is arranged through the inner ring, and the inner ring is driven and connected to the driving device.

[0013] Optionally, the driving device is provided with a driving shaft, the driving shaft is arranged through the outer ring, and the outer ring is driven and connected to the driving device.

[0014] Optionally, the cutter device and the driving device are provided with a first connecting disc, a second connecting disc and a third connecting disc, the first connecting disc is arranged on the upper end surface of the cutter device, the inner ring of the movable bearing is movably connected to the driving device through the first connecting disc and the second connecting disc, and the outer ring of the movable bearing is movably connected to the protection device through the third connecting disc.

[0015] Optionally, the first connecting disc is provided with a central hole connected to the driving shaft at a position corresponding to the central axis of the cutter device, the first connecting disc is provided with a first connecting hole in a circumferential direction, and an external connecting member is arranged through the first connecting hole, the cutter device and the protection device, so that the cutter device and the protection device are connected.

[0016] Optionally, the cutter device and the driving device are provided with a first connecting disc, a second connecting disc and a third connecting disc, the first connecting disc is arranged on the lower end surface of the cutter device, the outer ring of the movable bearing is movably connected to the driving device through the cutter device and the third connecting disc, and the inner ring of the movable bearing is movably connected to the protection device through the first connecting disc and the second connecting disc.

[0017] Optionally, one of the cutter device or the protection device is provided with an enclosure directed to the other.

[0018] The application discloses a mowing robot, which comprises a cutter device mounted on a vehicle head and a walking assembly mounted on a vehicle body, and the vehicle head and the vehicle body are detachably connected through a connecting part.

[0019] The above-mentioned cutter disc assembly and the lawn mowing robot, the cutter disc assembly comprises: a cutter disc device comprising a movable bearing and at least one blade arranged in a circumferential direction, the blade rotates around the central axis of the cutter disc device after the part of the movable bearing is drivingly connected with the driving device; a protection device is oppositely arranged at the bottom of the cutter disc device and movably connected with the part of the movable bearing, and the protection device can rotate relative to the cutter disc device. According to the scheme, the protection device is arranged at the bottom of the cutter disc device, the movable bearing in the cutter disc device can drive the protection device to rotate together under the rotation of the driving device, thus the protection device can rub against external objects, and the blade in the cutter disc does not rub against external objects, so that the influence of external objects on the mowing efficiency of the blade can be avoided, and the probability of external objects entering the inside of the cutter disc device is reduced due to the blocking of the protection device, so that the mowing performance of the lawn mowing robot can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not restrictive, of the present embodiments, wherein elements having the same reference number designates like elements throughout the various figures, and wherein the figures do not necessarily bear a proportional relationship to each other.

[0021] Figure 1 A structural schematic view of an embodiment of the cutter disc assembly disclosed by the embodiments of the present application;

[0022] Figure 2 A cross-sectional schematic view of the lower inner ring of the cutter disc assembly disclosed by the embodiments of the present application and the driving connection with the driving device;

[0023] Figure 3 A cross-sectional schematic view of the lower outer ring of the cutter disc assembly disclosed by the embodiments of the present application and the movable connection with the driving device;

[0024] Figure 4 An exploded schematic view of the lower inner ring of the cutter disc assembly disclosed by the embodiments of the present application and the driving connection with the driving device;

[0025] Figure 5 An exploded schematic view of the lower outer ring of the cutter disc assembly disclosed by the embodiments of the present application and the movable connection with the driving device;

[0026] Corresponding meaning of the reference numerals and the reference numerals:

[0027] 1, driving device; 101, driving shaft; 2, cutter disc device; 201, movable bearing; 2011, inner ring; 2012, outer ring; 202, blade; 3, protection device; 301, connecting column; 4, first connecting disc; 5, second connecting disc; 501, central hole; 502, first connecting hole; 503, second connecting hole; 6, third connecting disc; 7, cutter disc assembly. DETAILED DESCRIPTION

[0028] For the convenience of understanding the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like as used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first", "second", and the like are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "comprise", "include", and the like mean that the elements or objects listed before the term encompass the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Unless otherwise defined, the terms "parallel", "vertical", and "same" and the like used in the embodiments of the present application include the cases of "strictly parallel", "strictly vertical", "strictly same" and the like, as well as the cases of "approximately parallel", "approximately vertical", "approximately same" and the like with a certain error. For example, the above "approximately" can mean that the difference between the compared objects is within 10% or 5% of the average value of the compared objects. In the following description of the embodiments of the present application, when the number of a component or element is not specifically indicated, it means that the component or element can be one or more, or can be understood as at least one. "At least one" means one or more, and "multiple" means at least two.

[0030] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as understood by a person skilled in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0031] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. Obviously, the described embodiments are part of the embodiments of the utility model, not all. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0032] As Figures 1 to 5 The utility model discloses a cutter head assembly 7, including:

[0033] Driving device 1;

[0034] Cutter head device 2, including movable bearing 201 and the circumferential setting at least one blade 202, the part of movable bearing 201 is drivenly connected with driving device 1, and the blade 202 rotates around the central axis of cutter head device 2;

[0035] Protective device 3, relative to the bottom of cutter head device 2 is arranged, and with the part of movable bearing 201 is movably connected, the protective device 3 can rotate relative to cutter head device 2.

[0036] Wherein, driving device 1 can include driving motor, and the high-speed operation of driving motor can drive the blade 202 in cutter head device 2 connected with the driving shaft 101 of driving device 1 to rotate at high speed, and the cutting force that can cut grass is generated;Cutter head device 2 is the main functional component of the grass cutting robot, and cutter head device 2 can include a circular or elliptical cutter head, and at least one blade 202 can be arranged on the cutter head, and the blade 202 and the cutter head can be rigidly connected or flexibly connected, in the state of rigid connection, the connection between the blade 202 and the cutter head is locking connection, in the state of flexible connection, the blade 202 rotates along the blade 202 under the centrifugal force, and the movable bearing 201 can also be included on the cutter head device 2, the main function of the movable bearing 201 is to support the mechanical rotating body (driving device 1 can be movably connected with part of the movable bearing 201, and the power of driving device 1 rotating can be transmitted to the blade 202 in cutter head device 2), reduce the friction coefficient in the movement process, and ensure the rotation accuracy, and the movable bearing 201 can include an inner ring 2011 and an outer ring 2012 part, and the inner ring 2011 and the outer ring 2012 part can be connected through movable ball bodies;The protective device 3 is arranged at the bottom of the cutter head device 2, and the shape of the protective device 3 can be adapted to the shape of the cutter head in the cutter head device 2, when the protective device 3 is installed on the cutter head device 2, the blade 202 is arranged in the gap between the two;

[0037] The bottom of the cutter head device 2 of the embodiment is provided with a protection device 3. The cutter 202 in the cutter head device 2 rotates under the driving of the driving device 1. The movable bearing 201 in the cutter head device 2 can drive the protection device 3 to rotate together (the rotation speed of the protection device 3 can be the same as or different from the rotation speed of the cutter 202 in the cutter head device 2. In the case of difference, the rotation speed of the protection device 3 is reduced after friction with external objects). In this way, the protection device 3 can rub against external objects, and the cutter 202 in the cutter head does not rub against external objects, which can avoid the influence of external objects on the mowing efficiency of the cutter 202. At the same time, due to the blocking of the protection device 3, the probability of external objects entering the inside of the cutter head device 2 is reduced, which can ensure the mowing performance of the mowing robot.

[0038] As shown in Figure 2 In an embodiment, the movable bearing 201 includes an inner ring 2011 and an outer ring 2012 connected to each other. The inner ring 2011 is drivingly connected to the driving device 1, and the outer ring 2012 is movably connected to the protection device 3.

[0039] The inner and outer rings 2012 are connected to each other through movable balls for transmission. The connection devices of the parts in the bearing are different. The driving device 1 is connected to the inner ring 2011, and the protection device 3 is connected to the outer ring 2012. The force arm is increased, the stress on the inner ring 2011 is reduced, and the inner ring 2011 is protected.

[0040] As shown in Figure 3 In an embodiment, the movable bearing 201 includes an inner ring 2011 and an outer ring 2012 connected to each other. The inner ring 2011 is drivingly connected to the protection device 3, and the outer ring 2012 is movably connected to the driving device 1.

[0041] The inner and outer rings 2012 are connected to each other through movable balls for transmission. The connection devices of the parts in the bearing are different. The driving device 1 is connected to the outer ring 2012, and the protection device 3 is connected to the inner ring 2011. The outer ring 2012 is subjected to less stress, and the outer ring 2012 is protected (the outer ring 2012 is subjected to more collisions).

[0042] As shown in Figure 2 In an embodiment, the driving device 1 is provided with a driving shaft 101. The driving shaft 101 is arranged in the inner ring 2011 and drivingly connected to the inner ring 2011.

[0043] In the drive unit 1, the drive shaft 101 can be fixedly connected to the inner ring 2011 through clearance fit. When the drive shaft 101 in the drive unit 1 is subjected to torque, it will transmit the torque to the inner ring 2011 through the connection. The inner ring 2011 is therefore subjected to radial and possible axial loads, which will be further transmitted to the rolling elements and the outer ring 2012.

[0044] like Figure 3 As shown, in one embodiment, the driving device 1 is provided with a driving shaft 101, which passes through the outer ring 2012 and is driven to connect with the outer ring 2012.

[0045] In this device, the drive shaft 101 in the drive unit 1 can be fixedly connected to the outer ring 2012 through a clearance fit. When the drive shaft 101 in the drive unit 1 is subjected to torque, it will transmit the torque to the outer ring 2012 through the connection. The outer ring 2012 is therefore subjected to radial and possible axial loads, which will be further transmitted to the rolling elements and the inner ring 2011.

[0046] like Figure 2 and Figure 4 As shown, in one embodiment, a first connecting plate 4, a second connecting plate 5, and a third connecting plate 6 are provided between the cutter head device 2 and the drive device 1. The first connecting plate 4 is disposed on the upper end face of the cutter head device 2. The inner ring 2011 of the movable bearing 201 is movably connected to the drive device 1 through the first connecting plate 4 and the second connecting plate 5. The outer ring 2012 of the movable bearing 201 is movably connected to the protective device 3 through the third connecting plate 6.

[0047] The first connecting plate 4, the second connecting plate 5, the third connecting plate 6 and the cutter head device 2 are all connected, and the driving device 1 is also connected to the cutter head device 2. When the cutter head device 2 is driven by the driving device 1, it drives the first connecting plate 4 and the second connecting plate 5 to rotate. The first connecting plate 4 and the second connecting plate 5 drive the inner ring 2011 of the movable bearing 201 connected to them to rotate. The inner ring 2011 of the movable bearing 201 drives the outer ring 2012 of the movable bearing 201 to rotate. The outer ring 2012 of the movable bearing 201 drives the third connecting plate 6 to rotate. The third connecting plate 6 drives the protective device 3 to rotate.

[0048] In addition, during the lawn mowing process, various objects such as grass on the ground will rub against the protective device 3. The outer ring 2012 connected to the protective device 3 will be driven to rotate, while the inner ring 2011 will only be driven to rotate by the drive device 1. At this time, the inner and outer rings 2012 rotate relative to each other, and their relative rotation speeds may be different.

[0049] likeFigure 2 and Figure 4 As shown in FIG. 1 and FIG. 2, in an embodiment, the second connecting plate 5 is provided with a central hole 501 corresponding to the central axis of the cutter device 2, and the first connecting hole 502 is arranged circumferentially on the second connecting plate 5. After the external connecting member is simultaneously arranged in the first connecting hole 502, the cutter device 2 and the protection device 3 are connected.

[0050] The central hole 501 is aligned with the driving shaft 101 in the driving device 1, and drives the movable bearing 201 arranged at intervals on the first driving shaft 101 to rotate. The first connecting hole 502 is arranged in a hole position corresponding to the hole position in the protection device 3 and the cutter device 2, and the external connecting member is simultaneously arranged in the connecting hole positions of the three to connect the cutter device 2 and the protection device 3, so that the protection device 3 is not easily separated from the cutter device 2.

[0051] As shown in FIG. 1 and FIG. 2, in an embodiment, the second connecting plate 5 is provided with a central hole 501 corresponding to the central axis of the cutter device 2, and the first connecting hole 502 is arranged circumferentially on the second connecting plate 5. After the external connecting member is simultaneously arranged in the first connecting hole 502, the cutter device 2 and the protection device 3 are connected. Figure 3 and Figure 5 As shown in FIG. 1 and FIG. 2, in an embodiment, the second connecting plate 5 is provided with a central hole 501 corresponding to the central axis of the cutter device 2, and the first connecting hole 502 is arranged circumferentially on the second connecting plate 5. After the external connecting member is simultaneously arranged in the first connecting hole 502, the cutter device 2 and the protection device 3 are connected.

[0052] The first connecting plate 4, the second connecting plate 5, the third connecting plate 6 and the cutter device 2 are connected, and the driving device 1 is connected with the cutter device 2. When the cutter device 2 is driven and connected by the driving device 1, the third connecting plate 6 is driven to rotate, the third connecting plate 6 drives the outer ring 2012 of the movable bearing 201 connected thereto to rotate, the outer ring 2012 of the movable bearing 201 drives the inner ring 2011 of the movable bearing 201 to rotate, the inner ring 2011 of the movable bearing 201 drives the first connecting plate 4 and the second connecting plate 5 to rotate, and the first connecting plate 4 and the second connecting plate drive the protection device 3 to rotate.

[0053] As shown in FIG. 1 and FIG. 2, in an embodiment, the second connecting plate 5 is provided with a central hole 501 corresponding to the central axis of the cutter device 2, and the first connecting hole 502 is arranged circumferentially on the second connecting plate 5. After the external connecting member is simultaneously arranged in the first connecting hole 502, the cutter device 2 and the protection device 3 are connected. Figure 4 and Figure 5 As shown in FIG. 1 and FIG. 2, in an embodiment, the second connecting plate 5 is provided with a central hole 501 corresponding to the central axis of the cutter device 2, and the first connecting hole 502 is arranged circumferentially on the second connecting plate 5. After the external connecting member is simultaneously arranged in the first connecting hole 502, the cutter device 2 and the protection device 3 are connected.

[0054] In an embodiment, one of the cutter head device 2 or the protection device 3 is provided with a fence (not shown) towards the other.

[0055] The fence (not shown) can be arranged on the cutter head device 2 or the protection device 3, and during the mowing process of the cutter head device 2, the fence (not shown) can prevent the cut fine objects from entering the inside of the cutter head device 2, so as to avoid affecting the mowing performance of the cutter head device 2.

[0056] The embodiment of the application discloses a mowing robot (not shown), which comprises a cutter head assembly 7 arranged on a vehicle head (not shown) and a walking assembly (not shown) arranged on a vehicle body (not shown), and the vehicle head (not shown) and the vehicle body (not shown) are detachably connected through a connecting part.

[0057] The mowing robot (not shown) can be divided into a detachable vehicle head (not shown) and a vehicle body (not shown), the vehicle head (not shown) is provided with a functional module, and the vehicle body (not shown) is provided with a walking module, and when the mowing robot (not shown) is working, the vehicle body (not shown) can carry the vehicle head (not shown) to a designated garden area for mowing treatment.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; under the idea of the application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the application as described above, which are not provided in details for simplicity; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A cutter head assembly, characterized in that, include: Drive unit (1); The cutter head assembly (2) includes a movable bearing (201) and at least one blade (202) arranged circumferentially. The movable bearing (201) includes an inner ring (2011) and an outer ring (2012) connected to each other. One of the inner ring (2011) and the outer ring (2012) of the movable bearing (201) is driven to be connected to the drive device (1). The drive device (1) is used to drive the blade (202) to rotate around the central axis of the cutter head assembly (2). The protective device (3) is disposed at the bottom of the cutter head device (2) and is movably connected to the other of the inner ring (2011) and outer ring (2012) of the movable bearing (201). The protective device (3) can rotate relative to the cutter head device (2).

2. The cutter head assembly according to claim 1, characterized in that, The inner ring (2011) is driven to the driving device (1), and the outer ring (2012) is movably connected to the protective device (3).

3. The cutter head assembly according to claim 1, characterized in that, The inner ring (2011) is movably connected to the protective device (3), and the outer ring (2012) is driven connected to the driving device (1).

4. The cutter head assembly according to claim 2, characterized in that, The drive device (1) is provided with a drive shaft (101), which passes through the inner ring (2011) and is connected to the inner ring (2011) for drive.

5. The cutter head assembly according to claim 3, characterized in that, The drive device (1) is provided with a drive shaft (101), which passes through the outer ring (2012) and is connected to the outer ring (2012) for drive.

6. The cutter head assembly according to claim 4, characterized in that, A first connecting plate (4), a second connecting plate (5), and a third connecting plate (6) are provided between the cutter head device (2) and the drive device (1). The first connecting plate (4) is located on the upper end face of the cutter head device (2). The inner ring (2011) of the movable bearing (201) is driven to the drive device (1) through the first connecting plate (4) and the second connecting plate (5). The outer ring (2012) of the movable bearing (201) is movably connected to the protective device (3) through the third connecting plate (6).

7. The cutter head assembly according to claim 6, characterized in that, The second connecting plate (5) is provided with a central hole (501) for connecting to the drive shaft (101) at a position corresponding to the central axis of the cutter head device (2). The second connecting plate (5) is provided with first connecting holes (502) distributed circumferentially. After the external connecting piece passes through the first connecting hole (502), the cutter head device (2) and the protective device (3), the cutter head device (2) and the protective device (3) are connected.

8. The cutter head assembly according to claim 3 or 5, characterized in that, A first connecting plate (4), a second connecting plate (5), and a third connecting plate (6) are provided between the cutter head device (2) and the drive device (1). The first connecting plate (4) is located on the lower end face of the cutter head device (2). The outer ring (2012) of the movable bearing (201) is driven to the drive device (1) through the cutter head device (2) and the third connecting plate (6). The inner ring (2011) of the movable bearing (201) is movably connected to the protective device (3) through the first connecting plate (4) and the second connecting plate (5).

9. The cutter head assembly according to claim 1, characterized in that, The cutter head device (2) is provided with a barrier in the direction of the protective device (3); or the protective device (3) is provided with a barrier in the direction of the cutter head device (2).

10. A lawnmower robot, characterized in that, It includes a cutter head assembly as described in any one of claims 1 to 9 mounted on the front of the vehicle and a traveling assembly mounted on the vehicle body, wherein the front of the vehicle and the vehicle body are detachably connected by connecting components.

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