CN113892335A

CN113892335A - Grass cutter head and sanitation equipment thereof

Info

Publication number: CN113892335A
Application number: CN202111013422.9A
Authority: CN
Inventors: 李亮; 周诚远; 文亚龙; 张斌; 魏星
Original assignee: Guangdong Yingfeng Intelligent Environmental Sanitation Technology Co ltd; Changsha Zoomlion Environmental Industry Co Ltd
Current assignee: Guangdong Yingfeng Intelligent Environmental Sanitation Technology Co ltd; Changsha Zoomlion Environmental Industry Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-07
Anticipated expiration: 2041-08-31
Also published as: CN113892335B

Abstract

The invention relates to the technical field of cutters and discloses a mowing cutter disc and environmental sanitation equipment thereof, wherein the mowing cutter disc comprises a mounting frame, a cutter disc assembly and a reset mechanism, and the mounting frame is provided with a sliding mechanism; the cutter head assembly comprises a plurality of cutter heads arranged on the sliding mechanism, and each cutter head can slide on the mounting frame through the sliding mechanism; the resetting mechanism is arranged on the mounting frame and connected with the sliding mechanism and used for resetting the cutterheads under the driving of the sliding mechanism. The mowing cutter head disclosed by the invention not only can reduce the possibility of damage when meeting obstacles, but also can grab the obstacles to realize thorough mowing operation around the obstacles, and also can realize the obstacle avoidance function. The sanitation equipment is arranged on the mowing cutter head, so that the capability of thoroughly mowing around the obstacle is further enhanced, and the obstacle avoidance capability is also improved.

Description

Grass cutter head and sanitation equipment thereof

Technical Field

The invention relates to the technical field of cutters, in particular to a mowing cutter head and environmental sanitation equipment thereof.

Background

The sanitation equipment on the market now, the obstacle avoidance ability of its grass cutting blade disc is relatively poor. But the environment in the operation of mowing is complicated, often meets barriers such as stones, trees, light poles and the like, and the mowing cutter head avoids the barriers and is easy to damage if not in time.

Disclosure of Invention

The purpose of the invention is: provided are a grass cutter and an environmental sanitation device thereof, which can reduce the possibility of damage of the grass cutter when encountering obstacles.

In order to achieve the above object, the present invention provides a grass cutter deck comprising:

a mounting frame provided with a sliding mechanism;

the cutter head assembly comprises a plurality of cutter heads arranged on the sliding mechanism, and each cutter head can slide on the mounting frame through the sliding mechanism;

and the resetting mechanism is arranged on the mounting frame and connected with the sliding mechanism and is used for resetting the cutterheads under the driving of the sliding mechanism.

Optionally, a guide groove is formed in the mounting frame, the sliding mechanism is mounted in the guide groove, and the resetting mechanism drives each cutter disc to move along a preset track of the guide groove; the reset mechanism comprises an elastic piece and a pull rod, the elastic piece is installed on the installation frame, the sliding block is embedded in the guide groove and connected with the cutter head, one end of the pull rod is connected with one of the cutter head, and the other end of the pull rod is connected with the other cutter head so that the cutter heads are linked.

Optionally, the cutter head assembly comprises a first cutter head and a plurality of second cutter heads, one end of the pull rod is connected to the first cutter head, and the other end of the pull rod is connected to each of the second cutter heads.

Optionally, the first cutter disc and the second cutter disc have the same structure;

the first cutter head and the second cutter head all comprise a blade, a driving device and a cutter head shield, the driving device drives the blade to rotate, the cutter head shield is arranged outside the blade, and the cutter head shield is connected with the driving device in a rotating mode.

Optionally, the outer walls of the cutterhead shroud of the first cutterhead and the cutterhead shroud of the second cutterhead abut against each other.

Optionally, the cutter head shield is connected to the driving device through a rolling bearing.

Optionally, the mounting bracket is Y-shaped.

The invention also provides sanitation equipment, which comprises the mowing cutter head, and the sanitation equipment further comprises: and the frame is rotatably connected with the mowing cutter head.

Optionally, the sanitation device further includes:

and one end of the lifting elastic piece is arranged on the rack, and the other end of the lifting elastic piece is arranged on the mowing cutter head and is used for resetting the mowing cutter head.

Optionally, the sanitation device further includes:

one end of the lifting arm is hinged to the rack, and the other end of the lifting arm is arranged on the mowing cutter head;

and the fixed end of the fourth driving device is arranged on the rack, and the output end of the fourth driving device is arranged on the lifting arm and is used for driving the lifting arm to move so as to change the height of the mowing cutter head.

The invention provides sanitation equipment and a mowing cutter head thereof, and compared with the prior art, the sanitation equipment and the mowing cutter head thereof have the beneficial effects that:

the mowing cutter disclosed by the invention comprises a mounting frame, a cutter assembly and a reset mechanism, wherein the mounting frame is provided with a sliding mechanism, the cutter assembly comprises a plurality of cutters, each cutter can slide on the mounting frame through the sliding mechanism, and the reset mechanism can reset each cutter. When the mowing cutter head meets an obstacle, the mowing cutter head is in contact with the obstacle, the obstacle can push the cutter head to slide on the mounting frame, impact on the cutter head caused by the obstacle when the obstacle collides with the cutter head is reduced, and therefore the possibility of damage to the mowing cutter head is reduced.

The sanitation equipment comprises the mowing cutter head, so that the impact of a barrier on the cutter head when the barrier collides with the cutter head is reduced, and the possibility of damage to the mowing cutter head is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a mower deck according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a mounting rack according to an embodiment of the invention.

Fig. 3 is a schematic view of the bottom side structure of the mounting rack according to the embodiment of the invention.

Fig. 4 is a schematic structural diagram of a cutter head according to an embodiment of the invention.

Fig. 5 is a partial structural schematic view of fig. 4.

FIG. 6 is a schematic view of the attachment of a mower deck to a frame in accordance with an embodiment of the present invention.

Fig. 7 is a schematic diagram of a sanitation apparatus according to an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a related structure of a lifting arm according to an embodiment of the invention.

Fig. 9 is a schematic view of a cylindrical barrier positioned directly in front of a first cutterhead in accordance with an embodiment of the present invention.

FIG. 10 is a schematic view of the mowing operation range under the working condition of FIG. 9 according to the embodiment of the invention.

Fig. 11 is a schematic view of fig. 9, further enlarging the mowing range.

Fig. 12 is a schematic view of an embodiment of the present invention in which the cylindrical barrier is not directly in front of the first cutterhead.

FIG. 13 is a schematic diagram of an intermediate process of grabbing a cylindrical obstacle under the condition of FIG. 12.

FIG. 14 is a schematic view of the gripping of a cylindrical obstacle under the FIG. 12 operating condition.

FIG. 15 is a schematic view of an embodiment of the present invention with an obstruction positioned outside of the mower deck.

Fig. 16 is a schematic obstacle avoidance diagram under the working condition of fig. 15.

Fig. 17 is a schematic view of another obstacle of the present invention embodiment positioned outside of a mower deck.

Fig. 18 is a schematic obstacle avoidance diagram under the working condition of fig. 17.

Figure 19 is a schematic view of the forces on each cutterhead when the first cutterhead encounters a rearward force.

FIG. 20 is a schematic view of the direction of movement of the cutterheads under the condition of FIG. 19.

In the figure, 1, a grass cutter head; 2. a frame; 3. lifting the elastic member; 4. a lifting arm; 5. a fourth drive device; 6. an obstacle; 7. a cutter head assembly; 8. a reset mechanism; 9. a sliding mechanism; 81. an elastic member; 82. a pull rod; 11. a mounting frame; 12. a first cutter head; 13. a first elastic member; 14. a second cutter head; 15. a second elastic member; 16. a first link; 17. a third cutter head; 18. a third elastic member; 19. a second link; 111. a first slider; 112. a second slider; 113. a third slider; 114. a first chute; 115. a first slide rail; 116. a second chute; 117. a second slide rail; 118. a third chute; 119. a third slide rail; 121. a first blade; 122. a first driving device; 123. a first cutter head guard; 141. a second blade; 142. a second driving device; 143. a second cutterhead shroud; 171. a third blade; 172. a third driving device; 173. a third cutterhead guard; 21. a connecting rod; 41. a roller; 42. a fixing frame.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, a mower deck 1 according to a preferred embodiment of the present invention includes a mounting frame 11, a deck assembly 7, and a return mechanism 8.

The mounting frame 11 is provided with a sliding mechanism 9.

The mounting frame 11 is used for connecting parts of the cutter head assembly 7 and is also used for connecting environmental sanitation equipment and integrating cutters to form the grass cutter head 1. The mounting bracket 11 is Y-shaped, two top branches of the Y-shaped are in arc transition, and the three branches are respectively provided with a cutter head.

The cutterhead assembly 7 comprises a plurality of cutterheads arranged on a sliding mechanism 9, and each cutterhead can slide on a mounting frame 11 through the sliding mechanism 9.

Here, the number of cutter heads may be 1, or 2 or more. The cutterheads can slide synchronously or asynchronously through the sliding mechanism 9. The sliding directions of the cutter heads can be the same or different.

The resetting mechanism 8 is arranged on the mounting frame 11 and connected with the sliding mechanism 9, and is used for resetting each cutter head under the driving of the sliding mechanism 9.

After the cutter heads move, the reset mechanism 8 can reset the cutter heads. The reset mechanism 8 may be an elastic member 81 that is reset by an elastic force, or may be a magnetic force that is reset by a magnetic force.

When the mowing cutter head 1 meets the obstacle 6, the mowing cutter head 1 is in contact with the obstacle 6, the obstacle 6 can push the mowing cutter head to slide on the mounting frame 11, impact on the mowing cutter head caused by the fact that the obstacle 6 collides with the mowing cutter head in the mowing process is reduced, and therefore the possibility of damage to the mowing cutter head 1 is reduced.

A guide groove is formed in the mounting frame 11, the sliding mechanism 9 is installed in the guide groove, and the reset mechanism 8 drives each cutter head to move along a preset track of the guide groove.

The resetting mechanism 8 comprises an elastic part 81 and a pull rod 82, the elastic part 81 is installed on the installation frame 11, the sliding block is embedded in the guide groove and connected with the cutterheads, one end of the pull rod 82 is connected with one of the cutterheads, and the other end of the pull rod 82 is connected with the rest cutterheads so that the cutterheads are linked. When one of the cutterheads is pushed, the pull rod 82 drives other cutterheads to move along the preset track of the guide groove to form linkage.

The cutterhead assembly 7 comprises a first cutterhead 12 and a plurality of second cutterheads 14, wherein one end of a pull rod 82 is connected to the first cutterhead 12, and the other end of the pull rod is respectively connected to each second cutterhead 14. The pull rod 82 pulls the first cutterhead 12 and the second cutterhead 14 to form linkage, so that the action states of outward expansion and inward contraction are formed, and therefore the obstacles can be folded and held tightly and unfolded to release the obstacles, and the purpose of cutting weeds around the obstacles is achieved.

The first cutter head 12 and the second cutter head 14 both comprise a blade, a driving device and a cutter head shield, the driving device drives the blade to rotate, the cutter head shield is arranged outside the blade, and the cutter head shield is rotatably connected with the driving device.

In the present embodiment, the sliding mechanism 9 includes a first slider 111 slidable in the advancing direction of the environmental sanitation apparatus.

It should be further noted that the first sliding block 111 can slide along the advancing direction of the sanitation device, and the specific implementation structure may be that a sliding groove or a sliding rail is arranged on the mounting frame 11, the sliding groove is the above-mentioned guiding groove, the extending direction of the sliding groove or the extending direction of the sliding rail is parallel to the advancing direction of the sanitation device, and the first sliding block 111 is slidably arranged on the sliding groove or the sliding rail. In this embodiment, referring to fig. 2 and fig. 3, a manner of combining the sliding groove and the sliding rail is adopted in this embodiment. The mounting frame 11 is provided with a first sliding chute 114, the first sliding chute 114 is arranged along the advancing direction of the environmental sanitation equipment, a first sliding rail 115 arranged in parallel to the first sliding chute 114 is arranged above the first sliding chute 114, and the first sliding block 111 can slide in the first sliding chute 114 and can also slide on the first sliding rail 115. The first slide rail 115 penetrates the first slider 111. It should be understood that, besides the combination of the first sliding slot 114 and the first sliding rail 115 selected in the embodiment, the first sliding slot 114 or the first sliding rail 115 can be provided separately.

Referring to fig. 4 and 5, the cutter head assembly 7 includes a first cutter head 12, the first cutter head 12 includes a first blade 121, a first driving device 122 and a first cutter head shield 123, the first driving device 122 drives the first blade 121 to rotate, the first cutter head shield 123 is covered outside the first blade 121, the first cutter head shield 123 is connected with the first blade 121, and the first cutter head shield 123 is connected with the first slider 111.

The first sliding block 111 and the first blade disc guard 123 may be fixedly connected, or may be rotatably connected as shown in the embodiment, so as to rotatably connect the first blade disc guard 123 and the mounting frame 11.

In the present embodiment, the first drive device 122 is also provided in the first cutter head guard 123. The first driving device 122 is disposed at a central axis of the first cutter head guard 123, and an output end of the first driving device 122 is disposed downward and connected to the first blade 121. Conventionally, the central axis of the first cutter head shield 123 is arranged coaxially with the rotating shaft of the first cutter blade 121, so that the assembly of each part is facilitated, and the stress of the first cutter head shield 123 is more uniform. The designation of the first cutter discs 12 is for convenience of description, and the number of the first cutter discs 12 is not limited, that is, the number of the first cutter discs 12 may be 1, or 2 or more.

The cutter head shield is connected to the driving device through a rolling bearing, namely the first cutter head shield 123 is connected to the first driving device 122 through the rolling bearing, the first blade 121 is assembled on the rotating shaft, the driving motor drives the rotating shaft to move so as to drive the first blade 121 to cut grass rotatably, and the first cutter head shield 123 is connected to the rotating shaft through the rolling bearing, so that the first cutter head shield 123 can rotate while protecting the first blade 121, and hard collision of the first cutter head shield 123 is converted into rolling friction of the first cutter head shield around a barrier in the grass cutting process to achieve barrier avoidance, the barrier avoidance capability of the cutter head in the grass cutting process is further improved, and the service life of the cutter head is prolonged.

The elastic member 81 includes a first elastic member 13, referring to fig. 1, the first elastic member 13 is disposed on the first sliding block 111 and can drive the first sliding block 111 to slide, so as to reset the first sliding block 111.

The first elastic member 13 can convert the kinetic energy of the first cutter head 12 into the elastic potential energy of the first elastic member 13. The kinetic energy of the first cutter disc 12 refers to the kinetic energy of the first cutter disc 12 when the environmental sanitation equipment drives the first cutter disc 12 to move forward.

The grass cutter head 1 comprises a mounting frame 11, a first cutter head 12 and a first elastic piece 13, wherein the first cutter head 12 is mounted on the mounting frame 11, the first cutter head 12 can slide on the mounting frame 11 in the advancing direction of environmental sanitation equipment, and the first elastic piece 13 can reset a first sliding block 111 so as to reset the first cutter head 12. When the mower disc 1 meets the obstacle 6, the mower disc 1 contacts with the obstacle 6, the obstacle 6 can push the first mower disc 12 to slide on the mounting frame 11, kinetic energy of the first mower disc 12 is converted into elastic potential energy of the first elastic element 13, the first elastic element 13 plays a role in buffering, and the possibility of damage to the mower disc 1 is reduced.

The first elastic element 13 is a spring, the spring is parallel to the sliding direction of the first slider 111, one end of the spring is disposed on the first slider 111, and the other end of the spring is disposed on the mounting frame 11.

When the obstacle 6 is not encountered, the first sliding block 111 is located at the front end of the first sliding chute 114, where the front end refers to one end of the first sliding chute 114 pointing to the advancing direction of the environmental sanitation equipment, and the other end of the first sliding chute 114 is the rear end. When the obstacle 6 is encountered, the obstacle 6 pushes the first blade 12, and the first slider 111 moves from the front end to the rear end of the first sliding chute 114. In the present embodiment, referring to fig. 1, the spring is located on a side of the first slider 111 facing the rear end, so that when the first slider 111 encounters the obstacle 6, the spring is compressed when the first slider 111 moves towards the rear end, and the elastic force of the spring drives the first slider 111 to move towards the front end after the first slider leaves the obstacle 6, so as to reset the first blade tray 12. Of course, in other embodiments, the spring may also be disposed on a side of the first slider 111 facing away from the rear end of the first sliding slot 114, such that when the first slider 111 moves towards the rear end when encountering the obstacle 6, the spring is stretched, and the elastic force of the spring drives the first slider 111 to move towards the front end after leaving the obstacle 6, so as to reset the first blade disc 12.

The spring in this embodiment is sleeved on the first slide rail 115, and of course, the spring may be separately provided, and may be provided according to actual needs.

Referring to fig. 1 to fig. 3, the sliding mechanism 9 further includes a second slider 112 capable of sliding on the mounting frame 11, and an included angle between the sliding direction of the second slider 112 and the sliding direction of the first slider 111 is an obtuse angle.

The second slider 112 can slide on the mounting frame 11, and a specific implementation structure may be similar to that of the first slider 111, that is, a sliding groove or a sliding rail is provided on the mounting frame 11, an extending direction of the sliding groove or an extending direction of the sliding rail is set to be parallel to a forward direction of the sanitation device, and the second slider 112 is slidably disposed on the sliding groove or the sliding rail. In the present embodiment, referring to fig. 1 to fig. 3, a combination of a sliding groove and a sliding rail is adopted in the present embodiment. The mounting rack 11 is provided with a second sliding chute 116, the second sliding chute 116 is arranged along the advancing direction of the sanitation equipment, a second sliding rail 117 parallel to the second sliding chute 116 is arranged above the second sliding chute 116, and the second sliding block 112 can slide in the second sliding chute 116 and also can slide on the second sliding rail 117. The second slide rail 117 penetrates the second slider 112. It should be understood that, in addition to the combination of the second sliding groove 116 and the second sliding rail 117 selected in the present embodiment, the second sliding groove 116 or the second sliding rail 117 can be separately provided.

The angle between the sliding direction of the second slider 112 and the sliding direction of the first slider 111 is an obtuse angle, so that the second slider 112 is positioned in front of the first slider 111 in the advancing direction of the sanitation equipment, and can be left front or right front. In the present embodiment, the second slider 112 is positioned in front left of the first slider 111.

The cutterhead assembly 7 also includes a second cutterhead 14. Referring to fig. 4 and 5, the second cutter disc 14 is located on one side of the first cutter disc 12 along the advancing direction of the sanitation device, and includes a second blade 141, a second driving device 142 and a second cutter disc shield 143, the second driving device 142 drives the second blade 141 to rotate, the second cutter disc shield 143 is covered outside the second blade 141, the second cutter disc shield 143 is connected with the second blade 141, and the second cutter disc shield 143 is connected with the second slider 112.

In the present embodiment, the second cutter disc 14 has the same structure as the first cutter disc 12, and in other embodiments, the second cutter disc 14 and the first cutter disc 12 having different structures may be selected. The number of the second cutter discs 14 may be 1, or 2 or more.

The second slider 112 and the second cutterhead shroud 143 can be fixedly connected or can be rotatably connected as shown in the present embodiment, so that the second cutterhead shroud 143 can be rotatably connected with the mounting frame 11. In the present embodiment, the first cutter disc 12 and the second cutter disc 14 are arranged to rotate relatively. If fixedly connected, the first cutter disc 12 and the second cutter disc 14 can slide relative to each other. Compared with relative sliding, the design of relative rotation is more reasonable. Rolling bearings are provided on both the first cutter head shroud 123 and the second cutter head shroud 143 so that the first cutter head shroud 123 is rotatable about the first drive device 122 and the second cutter head shroud 143 is rotatable about the second drive device 142.

The elastic member 81 further includes a second elastic member 15, referring to fig. 1, the second elastic member 15 is disposed on the second sliding block 112 and can drive the second sliding block 112 to slide, so as to reset the second sliding block 112.

The second elastic element 15 is also a spring, and is disposed parallel to the sliding direction of the second slider 112, one end of the spring is disposed on the second slider 112, and the other end of the spring is disposed on the mounting frame 11. The related structure of the second elastic member 15 is similar to that of the first elastic member 13.

When the obstacle 6 is not encountered, the second slider 112 is located at the front end of the second sliding chute 116, where the front end refers to one end of the second sliding chute 116 closer to the advancing direction of the environmental sanitation equipment, and the other end of the second sliding chute 116 is the rear end. When the obstacle 6 is encountered, the obstacle 6 pushes the second cutter 14, and the second slide block 112 moves from the front end to the rear end of the second slide groove 116. During the movement of the second cutter disc 14, the first cutter disc 12 is also pushed, and the first slide block 111 moves from the front end to the rear end of the first slide groove 114. Thereby enabling avoidance of the obstacle 6. After leaving the obstacle 6, the first elastic member 13 and the second elastic member 15 push the first cutter disc 12 and the second cutter disc 14, respectively, back to the original positions.

The outer wall of the second cutter head shroud 143 abuts against the outer wall of the first cutter head shroud 123.

The arrangement is such that when the second cutter 14 is pushed by the barrier 6, the second cutter 14 can push the first cutter 12 simultaneously.

Referring to fig. 4 and 5, the grass cutter 1 of the present embodiment further includes a first connecting rod 16, one end of the first connecting rod 16 is hinged to the first cutter 12, and the other end of the first connecting rod 16 is hinged to the second cutter 14.

The first link 16 is provided, and the first link 16, i.e., the pull rod 82 described above, the first cutter disc 12 and the second cutter disc 14 can be better linked. The hinged positions of the two ends of the first connecting rod 16 are respectively coaxial with the rotating shafts of the first blade 121 and the second blade 141. Moreover, due to the arrangement of the first link 16, the rotation angle between the first cutterhead shroud 123 and the second cutterhead shroud 143 is less than 90 °.

Referring to fig. 1 to fig. 3, the sliding mechanism 9 further includes a third sliding block 113 capable of sliding on the mounting frame 11, and a sliding direction of the third sliding block 113 is symmetrical to a sliding direction of the second sliding block 112 with respect to the sliding direction of the first sliding block 111. Here, it should be noted that the third slider 113 is substantially the second slider 112, and is referred to as the third slider 113 for convenience of description. The same applies to the third slide groove 118, the third slide rail 119, the third cutter 17, the third vane 171, the third drive 172, and the third cutter shroud 173 described below.

The third sliding block 113 can slide on the mounting frame 11, and a specific implementation structure may be similar to that of the second sliding block 112, that is, a sliding groove or a sliding rail is provided on the mounting frame 11, an extending direction of the sliding groove or an extending direction of the sliding rail is set to be parallel to an advancing direction of the sanitation equipment, and the third sliding block 113 is slidably disposed on the sliding groove or the sliding rail. In the present embodiment, referring to fig. 1 to fig. 3, a combination of a sliding groove and a sliding rail is adopted in the present embodiment. The mounting frame 11 is provided with a third sliding chute 118, the third sliding chute 118 is arranged along the advancing direction of the environmental sanitation equipment, a third sliding rail 119 is arranged above the third sliding chute 118 and parallel to the third sliding chute 118, and the third sliding block 113 can slide in the third sliding chute 118 and can also slide on the third sliding rail 119. The third slide rail 119 penetrates the third slider 113. It should be understood that, in addition to the combination of the third sliding chute 118 and the third sliding rail 119 selected in the present embodiment, the third sliding chute 118 or the third sliding rail 119 can be provided separately.

The sliding direction of the third slider 113 and the sliding direction of the second slider 112 are symmetrical with respect to the sliding direction of the first slider 111, and are arranged such that the second slider 112 and the third slider 113 are positioned at the front left and right of the first slider 111, respectively, in the advancing direction of the sanitation device.

The cutter head assembly 7 further includes a third cutter head 17, referring to fig. 4 and 5, the third cutter head 17 and the second cutter head 14 are symmetrically disposed about the sliding direction of the first slider 111, and include a third blade 171, a third driving device 172 and a third cutter head shroud 173, the third driving device 172 drives the third blade 171 to rotate, the third cutter head shroud 173 is covered outside the third blade 171, the third cutter head shroud 173 is connected to the third blade 171, and the third cutter head shroud 173 is connected to the third slider 113.

In the present embodiment, the third cutter disc 17 has the same structure as the first cutter disc 12, and in other embodiments, a third cutter disc 17, a second cutter disc 14 or the first cutter disc 12 having different structures may be selected. The number of the third cutter discs 17 may be 1, or 2 or more.

The third slide block 113 and the third cutterhead shroud 173 may be fixedly connected or rotatably connected as shown in this embodiment to rotatably connect the third cutterhead shroud 173 to the mounting bracket 11. In the present embodiment, the first cutter disc 12 and the third cutter disc 17 are arranged to rotate relatively. If fixedly connected, the first cutterhead 12 and the third cutterhead 17 can slide relative to each other. Compared with relative sliding, the design of relative rotation is more reasonable. The third cutterhead shroud 173 is also provided with a rolling bearing to enable the third cutterhead shroud 173 to rotate about the third drive 172.

Referring to fig. 1, the elastic member 81 further includes a third elastic member 18, and the third elastic member 18 is disposed on the third sliding block 113 and can drive the third sliding block 113 to slide, so as to reset the third sliding block 113.

The third elastic element 18 is also a spring, and is disposed parallel to the sliding direction of the third slider 113, one end of the spring is disposed on the second slider 112, and the other end of the spring is disposed on the mounting frame 11. The third elastic member 18 has a structure similar to that of the second elastic member 15, and is positioned to be bilaterally symmetrical with respect to the first slide groove 114 with respect to the structure of the second elastic member 15.

The outer wall of the third impeller shroud 173 abuts the outer wall of the third impeller shroud 173.

The arrangement is such that when the third cutterhead 17 is pushed by the barrier 6, the third cutterhead 17 can push the first cutterhead 12 simultaneously.

Referring to fig. 4 and 5, the grass cutter 1 according to the present embodiment further includes a second connecting rod 19, one end of the second connecting rod 19 is hinged to the first cutter 12, and the other end of the second connecting rod 19 is hinged to the third cutter 17.

The second connecting rod 19 is provided, the second connecting rod 19 is the pull rod 82, the first cutter disc 12 and the third cutter disc 17 can be better linked. The second link 19 has two hinged ends coaxial with the rotation axes of the first blade 121 and the third blade 171. Also, due to the provision of the second link 19, the rotation angle between the first cutter disc shroud 123 and the third cutter disc shroud 173 is less than 90 °.

With respect to the linkage between the cutterheads and the function of the guide groove with the preset track on the mounting frame 11, referring to fig. 19 and 20, when the first cutterhead 12 encounters a backward pushing force, in fig. 19 and 20, the backward pushing force is illustrated as F1, F2 is a force applied to the first cutterhead 12 by the first connecting rod 16 and the second connecting rod 19, for the second cutterhead 14, a pulling force F2 applied to the first connecting rod 16, and F5 and F4 are force components of F2 in the direction of the second chute 116 and force components in the direction perpendicular to the direction, and the third cutterhead 17 is the same. The direction of travel of the first knife disc 12, i.e. the angle between the direction of the first link 114 and the second link 19, is a °, the angle between the first link 16 and the second link 19 is b °, the angle between the first link 16 and the second link 116 is c °, the angle between the second link 116 and the third link 118 is D °, and the angle between the first link 114 and the third link 118 is E °. Thus:

F2＝F1/[2cos(0.5b)]

F5＝F1*cos(c)/[2cos(0.5b)]

when the first cutter disc 12 is subjected to the pushing force F1, the second cutter disc 14 and the third cutter disc 17 are subjected to the component force F5 in the direction of the second slide groove 114 and the direction of the third slide groove 116, respectively, the first cutter disc 12 moves backward, and the second cutter disc 14 and the third cutter disc 17 move toward the first cutter disc 12.

Thereby, the second cutter disc 14 and the third cutter disc 17 are driven to be linked with the first cutter disc 12. When the first cutter 12 is not affected by the thrust, the first elastic member 13, the second elastic member 15 and the third elastic member 18 restore the respective cutters.

When the grass cutter 1 encounters a columnar obstacle 6, such as a telegraph pole and a tree, in the prior art, in order to prevent the grass cutter 1 from being damaged, the grass cutter 1 can only be controlled to bypass the obstacle 6 at a position far away from the obstacle 6, and the area where the obstacle 6 is located is manually trimmed for the second time. In the grass cutter 1 of the embodiment, when the columnar barrier 6 is located in front of the first cutter 12, the columnar barrier 6 pushes the first cutter 12 to move backwards, the second cutter 14 and the third cutter 17 can also contract simultaneously under the action of the first connecting rod 16 and the second connecting rod 19 to hold the columnar barrier 6 tightly, the columnar barrier 6 is wrapped through a triangular structure, and the grass cutter 1 does not need to avoid the columnar barrier 6 at the moment and prunes grass in the peripheral area of the columnar barrier 6. When the equipment trims grass around the cylindrical barrier 6, the equipment is reversed, the cylindrical barrier 6 is separated from the first cutter disc 12, the first cutter disc 12 is not pushed any more, and the three cutter discs return to the original positions under the action of the sliding assembly. The three cutter heads form a linkage mode, a triangular structure is formed to wrap around the obstacle 6, the whole mowing cutter head 1 does not need to perform turning type cutting around the obstacle 6, the whole equipment does not need to perform bypassing operation, grass around the obstacle 6 can be cut off at one time, mowing working time is shortened, and mowing efficiency is improved. Meanwhile, the three cutter heads are reset under the action of the elastic piece 81, so that the cutter head assembly 7 not only realizes intellectualization under the working condition of surrounding the obstacle 6, but also can carry out plane type integral mowing operation under the working condition of mowing without the obstacle 6, and the whole mowing cutter head 1 realizes more intellectualized operation modes under different working conditions.

It is worth proposing that, in this embodiment, the blade disc is three, has formed the mode that the triangle-shaped shape wraps up the barrier, of course, in other embodiments, the blade disc can also be four, five and more than, forms the parcel mode of many blade discs to make the clearance of wrapping up the barrier littleer, like this, mow more accurately, work effect is higher.

It should be explained that each cutter head can slide along each guide groove, and the cutter head shield of each cutter head can freely rotate around the driving device (for example, the second cutter head shield 143 can rotate around the second driving device 142), it can be seen that, among the existing three cutter heads, each cutter head forms a flexible movable structure capable of freely moving, through the flexible movable structure, the flexible obstacle avoidance for the obstacles 6 on the two sides of the cutter head can be realized, meanwhile, the multi-directional columnar obstacles 6 can be accurately grabbed, and the obstacle avoidance and the accurate mowing can be realized in the moving process.

The embodiment also provides sanitation equipment, which comprises the mowing cutter head 1.

Referring to fig. 6, the sanitation apparatus further includes a frame 2, and the frame 2 is rotatably connected to the mower deck 1.

Specifically, the front end of the frame 2 is provided with a connecting rod 21 pointing to the front, the front end of the connecting rod 21 is rotatably connected with the mounting frame 11, and therefore when the mowing cutter head 1 meets the obstacle 6, the mowing cutter head 1 turns to avoid the obstacle, and obstacle avoidance capacity can be greatly enhanced.

Referring to fig. 6 to 8, the sanitation device further includes a lifting elastic member 3, one end of the lifting elastic member 3 is disposed on the frame 2, and the other end of the lifting elastic member 3 is disposed on the mower disc 1 for resetting the mower disc 1.

The lifting elastic member 3 may be provided as a spring, and the spring may also be provided in parallel with the connection rod 21. Through the structure, after the mowing cutter head 1 turns to the obstacle avoidance, the lifting elastic piece 3 can pull the mowing cutter head 1 back to the original position, and the cutter head assembly 7 is straightened again to prepare for next mowing.

Referring to fig. 7 and 8, the sanitation apparatus further includes a lifting arm 4 and a fourth driving device 5.

One end of the lifting arm 4 is hinged on the frame 2, and the other end of the lifting arm 4 is arranged on the mowing cutter head 1. The lifting arm 4 can be connected to the mower deck 1 by a connecting rod 21. Specifically, the end of the lifting arm 4 extending out is connected to one end of a connecting rod 21, and the other end of the connecting rod 21 is connected to the mower deck 1.

The fixed end of the fourth driving device 5 is arranged on the frame 2, and the output end of the fourth driving device 5 is arranged on the lifting arm 4 and is used for driving the lifting arm 4 to move so as to change the height of the mower disc 1.

The fourth driving device 5 can be an air cylinder or an oil cylinder, and the height of the mower disc 1 is controlled by changing the length of the output end. When the environmental sanitation equipment travels, the mowing cutter head 1 can be lifted when encountering the stone energy barrier 6, so as to realize obstacle avoidance.

The lifting arm 4 is also provided with a roller 41, the roller 41 is arranged below the lifting arm 4, and the lowest point of the roller 41 is lower than the mower disc 1.

Before the mowing operation is started, the output end of the fourth driving device 5 extends, the mowing cutter head 1 is put down, and the roller 41 is contacted with the ground, so that the mowing operation can be carried out. This means that the height of the roller 41 determines the height of the mower deck 1 during mowing operations. The roller 41 can be arranged on the lifting arm 4 through a fixing frame 42, and the fixing frame 42 can be provided with a limiting pin and a plurality of mounting holes with different heights, and the height of the roller 41 can be adjusted through the different mounting holes into which the limiting pin is inserted. In order to facilitate the operation of the working personnel, a graduated scale can be arranged to visually represent the current height of the roller 41 and the height range capable of being adjusted.

It should be noted that in the present embodiment, the mowing tool pan 1 is rotatably provided on the frame 2, and the second tool pan 14 and the third tool pan 17 are not provided with a simple function stack, and when these mechanisms are combined together, they can perform a better obstacle avoidance function and can perform mowing work more thoroughly, as will be described below.

Referring to fig. 9, when the sanitation device encounters the columnar barrier 6 during mowing operation, and the columnar barrier 6 is located right in front of the first cutterhead 12 and located between the second cutterhead 14 and the third cutterhead 17, at this time, the columnar barrier 6 is surrounded by the three cutterheads, the columnar barrier 6 pushes the first cutterhead 12, and the first cutterhead 12, the second cutterhead 14 and the third cutterhead 17 are linked to tightly hold the columnar barrier 6, so that mowing operation can be performed on the periphery of the columnar barrier 6.

Referring to fig. 10, under the current working condition, the shadow is an area around the columnar obstacle 6 that is not trimmed. At this time, the guard apparatus is moved backward slightly and then moved forward to the left or right, and the mower deck 1 is rotated, thereby cutting the cylindrical obstacle 6 completely. Referring to fig. 11, the sanitation device is driven to the right and forward, and the grass cutter 1 rotates counterclockwise around the cylindrical barrier 6. After the trimming of the area around the columnar barrier 6 is finished, the environmental sanitation equipment backs up, the columnar barrier 6 is separated from the first cutterhead 12, the first cutterhead 12 is not pushed any more, the first cutterhead 12, the second cutterhead 14 and the third cutterhead 17 reset, and the whole mowing cutterhead 1 also resets under the action of the lifting elastic piece 3.

Referring to fig. 12, when the sanitation equipment encounters the cylindrical obstacle 6, but the cylindrical obstacle 6 is not directly in front of the first cutterhead 12, but is offset, the cutterhead 1 can also grab the cylindrical obstacle 6. For example, as shown in fig. 12-14, the columnar obstacle 6 first collides with the third cutter head 17, the third cutter head 17 may have a pressing force with the columnar obstacle 6, while the third cutter head 17 rotates, the entire mowing cutter head 1 also rotates, so that the columnar obstacle 6 collides with the first cutter head 12 and pushes the first cutter head 12 to move towards the rear end, and the second cutter head 14 and the third cutter head 17 are linked with the first cutter head 12 to hug the columnar obstacle 6, so as to grab the columnar obstacle 6, and perform a relatively thorough mowing operation on the area around the columnar obstacle 6.

When the sanitation equipment runs, when the outer side of the grass cutter head 1 is provided with the barrier 6, the barrier can be avoided.

Referring to fig. 15-18, when the outer side of the third impeller 17 encounters an obstacle 6, the third impeller shroud 173 protects the blades when the third impeller 17 impacts the obstacle 6.

Referring to fig. 15 and 16, the force applied by the obstacle 6 to the third cutterhead 17 forces the entire mower cutterhead 1 to rotate left, and the third cutterhead 17 is also pushed, so that the first cutterhead 12, the second cutterhead 14 and the third cutterhead 17 contract in a linkage manner to avoid the obstacle 6. When the mower leaves the obstacle 6, the overall position of the mower deck 1 and all the decks are reset.

Referring to fig. 17 and 18, when the force applied by the obstacle 6 to the third cutter disc 17 is parallel to the extending direction of the third sliding chute 118, the third cutter disc 17 is pushed, and the first cutter disc 12, the second cutter disc 14 and the third cutter disc 17 are contracted in a linkage manner, so as to avoid the obstacle 6. When the cutter head leaves the barrier 6, each cutter head is reset.

Therefore, the first cutter disc 12, the second cutter disc 14 and the third cutter disc 17 are combined with the mowing cutter disc 1 to be rotatable, so that the area around the columnar obstacle 6 can be thoroughly trimmed, and the obstacle 6 outside the mowing cutter disc 1 can be well avoided. According to the structure of the mowing cutter head 1 provided by the embodiment, other driving devices are not needed to realize linkage of the cutter head of the equipment, the number of driving elements is further reduced, and the mowing mechanism is high in applicability.

In summary, the embodiment of the present invention provides a grass cutter and a sanitation device thereof, wherein the grass cutter 1 can not only reduce the possibility of damage when encountering an obstacle 6, but also can grab the obstacle 6 to completely cut grass around the obstacle 6, and further can achieve the function of obstacle avoidance. The sanitation equipment is arranged on the mowing cutter head 1, so that the capability of thoroughly mowing around the obstacle 6 is further enhanced, and the obstacle avoidance capability is also improved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A grass cutting deck, comprising:

a mounting frame provided with a sliding mechanism;

2. The grass cutter deck of claim 1, wherein:

a guide groove is formed in the mounting frame, the sliding mechanism is mounted in the guide groove, and the resetting mechanism drives the cutter discs to move along a preset track of the guide groove;

the reset mechanism comprises an elastic piece and a pull rod, the elastic piece is installed on the installation frame, the sliding block is embedded in the guide groove and connected with the cutter head, one end of the pull rod is connected with one of the cutter head, and the other end of the pull rod is connected with the other cutter head so that the cutter heads are linked.

3. The mower deck of claim 2, wherein: the cutter head assembly comprises a first cutter head and a plurality of second cutter heads, one end of the pull rod is connected to the first cutter head, and the other end of the pull rod is connected to each second cutter head.

4. The mower deck of claim 3, wherein: the first cutter head and the second cutter head have the same structure;

5. The mower deck of claim 4, wherein:

the outer walls of the cutter head protective cover of the first cutter head and the cutter head protective cover of the second cutter head are abutted.

6. The mower deck of claim 4, wherein: the cutter head shield is connected to the driving device through a rolling bearing.

7. The grass cutter deck of claim 1, wherein:

the mounting bracket is Y-shaped.

8. A sanitation device including a mower deck as claimed in any one of claims 1 to 7, and further including a frame rotatably connected to said mower deck.

9. The sanitation device of claim 8, further comprising:

10. The sanitation device of claim 8, further comprising: