CN219844078U - Mower - Google Patents

Abstract

The utility model discloses a mower, which comprises: the cutter comprises a driving mechanism, a cutter head assembly, a first blade and a second blade; the driving mechanism is in driving connection with the cutterhead assembly and is used for driving the cutterhead assembly to rotate around a driving shaft of the driving mechanism; the first blade is rotationally connected with the cutterhead assembly, can synchronously rotate with the cutterhead assembly and can rotate relative to the cutterhead assembly; the second blade is fixedly connected with the cutterhead assembly and rotates synchronously with the cutterhead assembly; according to the utility model, the first blade which can rotate relative to the cutter head assembly and can synchronously rotate with the cutter head assembly and the second blade which is fixedly connected with the cutter head assembly and can synchronously rotate with the cutter head assembly are simultaneously arranged on the cutter head assembly, so that the fixedly arranged second blade can stop the cutter head assembly from continuously rotating when the mower is hit by the steel bar, further the steel bar is prevented from hitting the first blade again, the first blade is prevented from being broken, and further the safety of the mower is improved.

Description

Mower

Technical Field

The utility model relates to the technical field of intelligent robots, in particular to a mower.

Background

The blade that can rotate and can rotate around the blade disc in step with the blade disc that sets up on current lawn mower can keep away the position around the gyration of bolt step circumference when receiving the beat of barrier such as bar, but 360 degrees free rotations make the blade can contact with the bar again in the blade dodge the in-process. When the blade contacts with the steel bar again, the possibility that the top end of the blade is blocked by the contact of the steel bar exists, and the cutter head rotates at a high speed at the moment, so that the blade is easily blocked, and the function of the mower is affected.

Disclosure of Invention

The utility model discloses a mower capable of solving the technical problem that a blade is easy to break when the mower encounters the impact of obstacles such as steel bars, foreign matters and the like.

In order to achieve the above object, the present utility model provides a mower, comprising a driving mechanism, a cutter head assembly, a first blade and a second blade;

the driving mechanism is in driving connection with the cutterhead assembly and is used for driving the cutterhead assembly to rotate around a driving shaft of the driving mechanism;

the first blade is rotationally connected with the cutterhead assembly, can synchronously rotate with the cutterhead assembly and can rotate relative to the cutterhead assembly;

the second blade is fixedly connected with the cutterhead assembly and rotates synchronously with the cutterhead assembly.

In some embodiments, the first blade is disposed on a side of the cutterhead assembly that is proximate to the plane of the mower in the height direction, and the second blade is disposed on a side of the cutterhead assembly that is distal from the plane of the mower.

In some embodiments, the second blade has a cutting radius that is greater than the cutting radius of the first blade.

In some embodiments, the first blade and the second blade are spaced apart on the cutterhead assembly.

In some embodiments, the thickness of the first blade is less than the thickness of the second blade.

In some embodiments, the first blade is rotatably coupled to the cutterhead assembly by a first link about which the first blade is rotatable;

the second blade is fixedly connected with the cutterhead assembly through a second connecting piece.

In some embodiments, the cutterhead assembly includes a first cutterhead and a second cutterhead; the central axis of the first cutterhead is overlapped with the central axis of the second cutterhead, and the driving mechanism can drive the first cutterhead and the second cutterhead to synchronously rotate;

in the height direction, the first cutterhead is arranged on one side close to the plane of the mower, and the second cutterhead is arranged on one side, far away from the plane of the mower, of the first cutterhead;

the first blade is arranged on one side of the first cutter disc, which is close to the plane where the mower is located, and the second blade is arranged on one side of the first cutter disc, which is far away from the plane where the mower is located.

In some embodiments, the mower further comprises a rotating shaft and a third blade, wherein one end of the rotating shaft is fixedly connected with the first cutter head, and the other end of the rotating shaft is fixedly connected with the second cutter head;

the third blade is positioned between the first cutterhead and the second cutterhead, and is rotationally connected with the rotating shaft.

In some embodiments, the second blade has a cutting radius that is greater than the cutting radius of the first blade and less than the cutting radius of the third blade.

In some embodiments, the second blade and the third blade are disposed on the same side of the first cutterhead.

The embodiment of the utility model has the following beneficial effects:

according to the mower, the first blade which can rotate relative to the cutter head assembly and can rotate synchronously with the cutter head assembly and the second blade which is fixedly connected with the cutter head assembly and can rotate synchronously with the cutter head assembly are arranged on the cutter head assembly, so that when the mower is hit by a steel bar, the cutter head assembly can be blocked from continuously rotating by the fixedly arranged second blade, further, the steel bar is prevented from hitting the first blade again, breakage of the first blade is avoided, and further safety of the mower is improved.

Drawings

In order to more clearly illustrate the mower according to the utility model, the drawings required for the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a mower according to an embodiment of the present utility model;

fig. 2 is a schematic perspective view of a mower according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a manner in which a cutterhead assembly and blades are disposed in a mower according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a cutterhead assembly in a mower according to an embodiment of the present utility model

Fig. 5 is a schematic structural view of a second blade in a mower according to an embodiment of the present utility model.

Wherein, the reference numerals in the figures correspond to: 1-driving mechanism, 2-cutter head assembly, 21-first cutter head, 22-second cutter head, 3-first cutter blade, 4-third cutter blade, 5-second cutter blade, 6-first connecting piece, 7-second connecting piece, 71-bolt, 72-nut, 8-pivot, 9-axle sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Currently, there are the following related techniques: firstly, only set up on the blade disc with blade disc fixed connection and synchronous pivoted blade, the center department of blade installs a bolt and increases gasket and lean on frictional force and lock with the drive shaft, this scheme, when receiving barrier such as bar iron to hit, drive arrangement stall, the bolt is become flexible slightly and then the blade stall. Secondly, only a blade with a shorter length and capable of rotating relative to the cutter head is arranged on the cutter head, so that the blade rotates relative to the cutter head to avoid when being hit by obstacles such as steel bars, and in the technical scheme, the diameter of the cutter head is smaller, the length of the blade is shorter, and the kinetic energy of the blade is smaller; in this case, if the length of the blade is increased, the blade is likely to break when being hit by an obstacle such as a steel bar.

Based on the first blade with higher motility, the utility model can improve mowing quality, and the first blade and the second blade are arranged on the cutter head assembly, so that the second blade can prevent the cutter head assembly from rotating in time when being hit by obstacles such as steel bars and the like, and avoid the obstacles such as the steel bars and the like from hitting the first blade for many times and avoiding the breakage of the first blade.

Referring to fig. 1 to 5, there is shown a mower according to an embodiment of the present utility model, specifically, the mower includes a driving mechanism 1, a cutterhead assembly 2, a first blade 3 and a second blade 5;

the driving mechanism 1 is in driving connection with the cutterhead assembly 2 and is used for driving the cutterhead assembly 2 to rotate around a driving shaft of the driving mechanism 1;

the first blade 3 is rotatably connected with the cutterhead assembly 2, and the first blade 3 can synchronously rotate with the cutterhead assembly 2 and can rotate relative to the cutterhead assembly 2;

the second blade 5 is fixedly connected with the cutterhead assembly 2 and rotates synchronously with the cutterhead assembly 2.

In some exemplary embodiments, the cutterhead assembly 2 includes at least one cutterhead.

In some exemplary embodiments, the drive mechanism 1 may be a drive motor; correspondingly, the driving motor can be in driving connection with the cutterhead assembly through the driving shaft.

In some exemplary embodiments, the first blade 3 may be rotatably coupled to the cutterhead assembly 2 via a first coupling 6. The cutterhead assembly 2 can drive the first connecting piece 6 and the first blade 3 to rotate synchronously.

In one example, the first connecting member 6 is fixedly connected to the cutterhead assembly 2, the first blade 3 is rotatably connected to the first connecting member 6, and the first blade 3 can rotate relative to the first connecting member 6 by 360 °.

In another example, the first connecting piece 6 is rotationally connected with the cutterhead assembly 2, the first blade 3 is fixedly connected with the first connecting piece 6, the first connecting piece 6 can rotate relative to the cutterhead assembly 2, and meanwhile, the first blade 3 is driven to rotate relative to the cutterhead assembly 2, and the rotation angle can be 360 degrees.

In one specific example, the role of the first blade 3 includes, but is not limited to, mowing.

In some exemplary embodiments, the second blade 5 is fixedly coupled to the cutterhead assembly 2 via a second coupling 7.

In one example, the second connection 7 may include a bolt 71 and a nut 72, and the second blade 5 is secured to the cutterhead assembly 2 by the bolt 71 and the nut 72.

Specifically, the cutter head assembly 2 may be provided with a D-shaped groove, and the bolt 71 is provided with a structure adapted to the D-shaped groove, so that the bolt 71 cannot be loosened in the D-shaped groove; further, when the head of the bolt 71 is worn by an obstacle, the disassembly of the bolt 71 is not affected; this design ensures the stability of the second blade 5 and the ease of removal.

In another example, the second connecting member 7 may be a latch member or the like that can secure the second blade 5 to the cutterhead assembly 2.

In other exemplary embodiments, the second blade 5 may be welded to the cutterhead assembly 2.

Optionally, the thickness of the first blade 3 is smaller than the thickness of the second blade 5. Thus, by ensuring the strength of the second blade 5, the second blade 5 can prevent the cutterhead assembly 2 from continuing to rotate when being hit by the steel bar, so as to ensure the mowing effect of the first blade 3.

According to the utility model, the first blade 3 which can rotate relative to the cutter head assembly 2 and can synchronously rotate with the cutter head assembly 2 and the second blade 5 which is fixedly connected with the cutter head assembly 2 and can synchronously rotate with the cutter head assembly 2 are simultaneously arranged on the cutter head assembly 2, so that when the mower is hit by a steel bar, the cutter head assembly 2 can be blocked from continuously rotating by the fixedly arranged second blade 5, further the steel bar is prevented from striking the first blade 3 again, the first blade 3 is prevented from being broken, and the safety of the mower is further improved.

In some exemplary embodiments, the closer the second blade 5 is positioned to the plane of the mower, the better, but to ensure the cutting effect of the first blade 3, the first blade 3 and the second blade 5 may be positioned on opposite sides of the cutterhead assembly.

Specifically, in some exemplary embodiments, the first blade 3 and the second blade 5 may be disposed on the cutterhead assembly in the following manner: in the height direction, the first blade 3 is disposed on a side of the cutterhead assembly 2 close to the plane of the mower, and the second blade 5 is disposed on a side of the cutterhead assembly 2 away from the plane of the mower. The arrangement can improve the safety of the mower and prolong the service life of the mower on the premise of ensuring the cutting effect of the first blade 3.

The plane where the mower is located may refer to a surface of a working area where the mower is located, for example, when the mower is currently located on a flat ground, the plane where the mower is located refers to a surface of the ground, and when the mower is currently located on a slope, the plane where the mower is located refers to a surface of the slope. As one example, the work area may refer to a lawn area.

In some exemplary embodiments, the cutting radius of the second blade 5 is larger than the cutting radius of the first blade 3. This way the second blade 5 can be allowed to touch an obstacle earlier than the first blade 3 to avoid damage to the first blade.

In some exemplary embodiments, the first blade 3 and the second blade 5 are spaced apart on the cutterhead assembly 2. This kind of setting can make first blade 3 in the time receive when beating of bar etc. second blade 5 can in time pass through the interaction force with bar etc. and prevent the blade disc subassembly to rotate continually, and then can avoid first blade 3 to receive beating of bar etc. again.

In one example, the number of the first blades 3 and the second blades 5 is equal, and a plurality of the first blades 3 and the second blades 5 may be provided, and are uniformly distributed along the circumference of the cutterhead assembly 2.

For example, in the case where the first blades 3 and the second blades 5 are three, the three first blades 3 are uniformly distributed along the circumferential direction of the cutterhead assembly 2; the adjacent two first blades 3 may be spaced apart by 120 °. The three second blades 5 are uniformly distributed along the circumferential direction of the cutterhead assembly 2; the adjacent two second blades 5 may be spaced apart by 120 °.

Correspondingly, the first blades 3 and the second blades 5 which are adjacently arranged can be spaced by 60 °.

In another example, the number of the first blades 3 and the number of the second blades 5 may not be equal, so long as the setting position of the second blades 5 can ensure that the second blades 5 can block the rotation of the cutterhead assembly 2 in time after the first blades 3 are hit by the steel rod or the like for the first time, so as to avoid the second hit of the first blades 3 by the steel rod.

In some exemplary embodiments, as shown in fig. 1-3, the cutterhead assembly 2 includes a first cutterhead 21 and a second cutterhead 22; the central axis of the first cutterhead 21 is overlapped with the central axis of the second cutterhead 22, and the driving mechanism 1 can drive the first cutterhead 21 and the second cutterhead 22 to synchronously rotate;

in the height direction, the first cutterhead 21 is arranged at one side close to the plane of the mower, and the second cutterhead 22 is arranged at one side of the first cutterhead 21 away from the plane of the mower;

the first blade 3 is arranged on one side of the first cutter head 21, which is close to the plane of the mower, and the second blade 5 is arranged on one side of the first cutter head 21, which is far away from the plane of the mower.

Specifically, the first blade 3 is disposed on the side of the first cutterhead 21 close to the plane of the mower, which means that the first blade 3 is disposed on the side of the first cutterhead 21 away from the second cutterhead 22, and the second blade 5 is disposed on the side of the first cutterhead 21 away from the plane of the mower, which means that the second blade 5 is disposed on the side of the first cutterhead 21 close to the second cutterhead 22.

In some exemplary embodiments, as shown in fig. 1 to 3, the mower further includes a rotating shaft 8 and a third blade 4, wherein one end of the rotating shaft 8 is fixedly connected with the first cutterhead 21, and the other end is fixedly connected with the second cutterhead 22; the third blade 4 is located between the first cutter 21 and the second cutter 22, and the third blade 4 is rotatably connected with the rotating shaft 8.

Specifically, the rotary shaft 8 and the third blade 4 can be rotated in synchronization with the first cutter head 21 and the second cutter head 22. The third blade 4 is rotatable about the rotation axis 8, which may be 360 deg..

In an exemplary embodiment, the second blade 5 and the third blade 4 are disposed on the same side of the first cutterhead 21. The same side here may include being disposed at the same height position or at different height positions. For example, the second blade 5 and the third blade 4 are both disposed on the surface of the first cutterhead 21, and for example, the second blade 5 is disposed on the surface of the first cutterhead 21 and the third blade 4 is disposed at a height from the first cutterhead 21.

As an example, the third blade 4 may also slide in a certain range along the axial direction of the rotating shaft 8 with respect to the rotating shaft 8.

In a specific example, the action of the third blade 4 includes, but is not limited to, grass chopping.

In one example, the cutting radius of the second blade 5 is larger than the cutting radius of the first blade 3 and smaller than the cutting radius of the third blade 4. This design ensures the cutting effect of the first blade 3 and the grass breaking effect of the third blade 4, while ensuring the protection of the first blade by the second blade 5.

In an exemplary embodiment, the third blades 4 may include a plurality of the third blades 4 distributed along the axial direction of the rotation shaft 8.

In one example, a bushing 9 is provided between two adjacent third blades 4 to limit said third blades 4.

As an example, the third blade 4 and the sleeve 9 may be both sleeved on the rotating shaft 8, the third blade 4 may be rotationally connected with the rotating shaft 8, and the sleeve 9 may be in interference fit with the rotating shaft 8. The interference fit, namely, the interference value of the shaft and the hole is relied on, so that elastic pressure is generated between the surfaces of the parts after the assembly, and the fastening connection is obtained.

In one example, the cutting radius of the plurality of third blades 4 may be sequentially increased in the direction of the first cutterhead 21 toward the second cutterhead 22, improving the grass chopping effect.

As shown in fig. 3, in a specific example, the first blade 3 and the third blade 4 are used as a first blade group, and the second blade 5 is used as a second blade group.

Wherein, first blade 3 and third blade 4 all can rotate with the rotation of blade disc subassembly 2 in step, and can rotate for blade disc subassembly 2, and first blade 3 can be used for mowing, and third blade 4 can be used for garrulous grass, and second blade 5 can rotate with the rotation of blade disc subassembly 2 in step, and when first blade group runs into the beat of barrier such as steel bar, stops blade disc subassembly 2 and continue to rotate.

Along the direction from the first cutter head 21 to the second cutter head 22, the cutting radius of each blade increases in turn; specifically, the cutting radius of the first blade 3 is smaller than the cutting radius of the second blade 5 and smaller than the cutting radius of the third blade 4.

In this example, three sets of first blade sets and three sets of second blade sets are provided;

the three groups of the first blade groups are evenly distributed along the circumferential direction of the cutterhead assembly 2;

the three groups of second blade groups are evenly distributed along the circumferential direction of the cutterhead assembly 2;

the first blade sets and the second blade sets are arranged at intervals, and the three first blade sets and the three second blade sets are evenly distributed along the circumferential direction of the cutterhead assembly 2.

Correspondingly, taking the mower as an example, when the mower is hit by a steel bar in a test scene, the second blade 5 can firstly encounter the steel bar, and the cutter head assembly 2 is prevented from rotating through interaction force with the steel bar, so that the first blade 3 is prevented from being damaged due to the hit of the steel bar.

It should be noted that the apparatus and method embodiments in the apparatus embodiments are based on the same inventive concept.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above 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 foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A mower, which is characterized by comprising a driving mechanism (1), a cutter head assembly (2), a first blade (3) and a second blade (5);

the driving mechanism (1) is in driving connection with the cutterhead assembly (2) and is used for driving the cutterhead assembly (2) to rotate around a driving shaft of the driving mechanism (1);

the first blade (3) is rotationally connected with the cutterhead assembly (2), and the first blade (3) can synchronously rotate with the cutterhead assembly (2) and can rotate relative to the cutterhead assembly (2);

the second blade (5) is fixedly connected with the cutterhead assembly (2) and synchronously rotates with the cutterhead assembly (2).

2. A mower as claimed in claim 1, wherein in the height direction the first blade (3) is arranged on the side of the cutterhead assembly (2) close to the plane of the mower and the second blade (5) is arranged on the side of the cutterhead assembly (2) remote from the plane of the mower.

3. A mower as claimed in claim 1, wherein the cutting radius of the second blade (5) is larger than the cutting radius of the first blade (3).

4. A mower as claimed in claim 1, wherein said first blade (3) and said second blade (5) are arranged at intervals on said cutterhead assembly (2).

5. Mower according to claim 1, wherein the thickness of the first blade (3) is smaller than the thickness of the second blade (5).

6. A mower as claimed in claim 1, wherein said first blade (3) is rotatably connected to said cutterhead assembly (2) by a first connection (6), said first blade (3) being rotatable about said first connection (6);

the second blade (5) is fixedly connected with the cutterhead assembly (2) through a second connecting piece (7).

7. The mower as claimed in claim 1, characterized in that the cutterhead assembly (2) comprises a first cutterhead (21) and a second cutterhead (22); the central axis of the first cutterhead (21) is overlapped with the central axis of the second cutterhead (22), and the driving mechanism (1) can drive the first cutterhead (21) and the second cutterhead (22) to synchronously rotate;

in the height direction, the first cutterhead (21) is arranged on one side close to the plane of the mower, and the second cutterhead (22) is arranged on one side, far away from the plane of the mower, of the first cutterhead (21);

the first blade (3) is arranged on one side, close to the plane where the mower is located, of the first cutter head (21), and the second blade (5) is arranged on one side, far away from the plane where the mower is located, of the first cutter head (21).

8. The mower as claimed in claim 7, further comprising a rotating shaft (8) and a third blade (4), wherein one end of the rotating shaft (8) is fixedly connected with the first cutterhead (21), and the other end is fixedly connected with the second cutterhead (22);

the third blade (4) is located between the first cutter head (21) and the second cutter head (22), and the third blade (4) is rotatably connected with the rotating shaft (8).

9. A mower as claimed in claim 8, wherein the cutting radius of the second blade (5) is greater than the cutting radius of the first blade (3) and less than the cutting radius of the third blade (4).

10. A mower as claimed in claim 9, wherein said second blade (5) and said third blade (4) are arranged on the same side of said first cutterhead (21).