阅读说明：本技术 刀盘辅助调高组件以及割草机 (Supplementary subassembly and lawn mower of increaseing of blade disc ) 是由 蒲志高 高杰 曹金 李汪浩 于 2020-12-21 设计创作，主要内容包括：本发明提供了一种刀盘辅助调高组件及割草机。其中所述刀盘辅助调高组件包括：由内至外依次活动套设的至少两个刀盘连接器；其中第一刀盘连接器,位于最内侧,固定安装在原动机的输出轴上；第二刀盘连接器,位于最外侧,用于连接刀盘；以及调节件,用于带动第二刀盘连接器沿第一刀盘连接器的表面运动,以调节刀盘的高度。相较于现有技术,本发明刀盘辅助调高组件通过调节刀盘与输出轴之间的距离来实现刀盘的离地高度调节,结构简单、易于操作。(The invention provides a cutter head auxiliary height-adjusting assembly and a mower. Wherein supplementary subassembly of increaseing of blade disc includes: at least two cutter head connectors are movably sleeved from inside to outside in sequence; the first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover; the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head. Compared with the prior art, the auxiliary height-adjusting assembly for the cutter head realizes the height adjustment of the cutter head from the ground by adjusting the distance between the cutter head and the output shaft, and has the advantages of simple structure and easy operation.)

1. The utility model provides a supplementary subassembly of increaseing of blade disc which characterized in that includes:

at least two cutter head connectors are movably sleeved from inside to outside in sequence; wherein

The first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover;

the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and

and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

2. The cutterhead auxiliary height adjustment assembly of claim 1,

the first blade tray connector includes:

a hollow first body;

the first guide grooves are respectively arranged at the outer side of the first body; and

the first body is sleeved on the outer side of an output shaft of the prime motor in a tight fit manner, and the adjacent cutter head connector on the outer side of the first body is guided to move through the first guide groove.

3. The cutterhead auxiliary height adjustment assembly of claim 2,

the second cutter head connector includes:

a hollow second body;

a plurality of second guide parts which are protruded and are arranged at the inner side of the second body;

the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side;

the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and

the second guide portion is adapted to the guide groove adjacent to the inner side to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

4. The cutterhead auxiliary height adjustment assembly of claim 3,

the first cutterhead connector further comprises a plurality of first limiting pieces;

the first limiting piece is arranged at the groove end of the first guide groove in a protruding mode so as to limit the guide part matched with the first limiting piece from sliding out, namely

The cutter head connector adjacent the outer side of the first cutter head connector is restricted from disengaging from the surface of the first cutter head connector.

5. The cutterhead auxiliary height adjustment assembly of claim 1,

at least one third cutter head connector is further arranged between the first cutter head connector and the second cutter head connector.

6. The cutterhead auxiliary height adjustment assembly of claim 5,

the third cutter head connector includes:

a hollow third body;

the plurality of third protruding guide parts are positioned on the inner side of the third body and are matched with the guide grooves adjacent to the inner side of the third body; and

and the third guide grooves are positioned on the outer side of the third body and are matched with the guide parts adjacent to the outer side of the third body.

7. The cutterhead auxiliary height adjustment assembly of claim 6,

the third cutter head connector is provided with a plurality of third limiting pieces;

the third limiting piece is arranged at the groove end of the third guide groove in a protruding mode so as to limit the guide part matched with the third limiting piece from sliding out, namely

And limiting the cutter head connector adjacent to the outer side of the third cutter head connector from being separated from the surface of the third cutter head connector.

8. The cutterhead auxiliary height adjustment assembly of claim 4,

the adjusting piece comprises an auxiliary height adjusting rod;

the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and

and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

9. The cutterhead auxiliary height adjustment assembly of claim 8,

the mounting end of the auxiliary height adjusting rod is clamped in the first body through a first limiting piece;

an adjusting groove is formed in the adjusting end of the auxiliary height adjusting rod; and

and the cutter head is provided with a threaded through hole suitable for the movement of the adjusting end.

10. The cutterhead auxiliary height adjustment assembly of claim 9,

and a spring gasket is also arranged between the auxiliary height adjusting rod and the output shaft end of the prime mover.

11. A lawn mower, comprising:

a housing;

a prime mover located within the housing;

the cutter head auxiliary height-adjusting assembly is fixedly arranged on an output shaft of the prime motor;

the cutter head is positioned at the bottom of the auxiliary cutter head height-adjusting assembly;

the prime motor is suitable for driving the cutter head to rotate; and

the auxiliary height-adjusting assembly for the cutter head is suitable for adjusting the height of the cutter head.

12. The mower of claim 11,

supplementary height-adjusting subassembly of blade disc includes:

at least two cutter head connectors are movably sleeved from inside to outside in sequence; wherein

The first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover;

the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and

and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

13. The mower of claim 12,

the first blade tray connector includes:

a hollow first body;

the first guide grooves are respectively arranged at the outer side of the first body; and

the first body is sleeved on the outer side of an output shaft of the prime motor in a tight fit manner, and the adjacent cutter head connector on the outer side of the first body is guided to move through the first guide groove.

14. The mower of claim 13,

the second cutter head connector includes:

a hollow second body;

a plurality of second guide parts which are protruded and are arranged at the inner side of the second body;

the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side;

the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and

the second guide portion is adapted to the guide groove adjacent to the inner side to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

15. The mower of claim 14,

the first cutterhead connector further comprises a plurality of first limiting pieces;

the first limiting piece is arranged at the groove end of the first guide groove in a protruding mode so as to limit the guide part matched with the first limiting piece from sliding out, namely

The cutter head connector adjacent the outer side of the first cutter head connector is restricted from disengaging from the surface of the first cutter head connector.

16. The mower of claim 12,

at least one third cutter head connector is arranged between the first cutter head connector and the second cutter head connector;

the third cutter head connector includes:

a hollow third body;

the plurality of third protruding guide parts are positioned on the inner side of the third body and are matched with the guide grooves adjacent to the inner side of the third body; and

and the third guide grooves are positioned on the outer side of the third body and are matched with the guide parts adjacent to the outer side of the third body.

17. The mower of claim 16,

the third cutter head connector is provided with a plurality of third limiting pieces;

the third limiting piece is arranged at the groove end of the third guide groove in a protruding mode so as to limit the guide part matched with the third limiting piece from sliding out, namely

And limiting the cutter head connector adjacent to the outer side of the third cutter head connector from being separated from the surface of the third cutter head connector.

18. The mower of claim 14,

the adjusting piece comprises an auxiliary height adjusting rod;

the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and

and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

19. The mower of claim 18,

the mounting end of the auxiliary height adjusting rod is clamped in the first body through a first limiting piece;

an adjusting groove is formed in the adjusting end of the auxiliary height adjusting rod; and

and the cutter head is provided with a threaded through hole suitable for the movement of the adjusting end.

20. The mower of claim 19,

and a spring gasket is also arranged between the auxiliary height adjusting rod and the output shaft end of the prime mover.

Technical Field

The invention relates to a cutter head auxiliary height adjusting assembly and a mower.

Background

The intelligent lawn mower is a robot for maintaining a lawn, has the advantages of intellectualization, modernization, environmental protection, liberation of hands and the like, and is more and more favored by markets and consumers. In order to meet different requirements of different users on mowing height, the intelligent mower is generally provided with a height adjusting mechanism to adjust the height of a cutter head from the ground, so that the height of a lawn after being mowed is controlled. However, the conventional adjusting method has a limited height adjusting range, and is difficult to meet the requirement of differentiation of lawn heights.

Disclosure of Invention

The invention aims to provide a cutter head auxiliary height-adjusting assembly which is simple in structure and easy to operate, and the height of a cutter head above the ground is adjusted by adjusting the distance between the cutter head and an output shaft.

In order to achieve the above object, the present invention provides an auxiliary height-adjusting assembly for a cutter head, comprising: at least two cutter head connectors are movably sleeved from inside to outside in sequence; the first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover; the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

As a further improvement of the present invention, the first blade hub connector includes: a hollow first body; the first guide grooves are respectively arranged at the outer side of the first body; and the first body is tightly sleeved on the outer side of the output shaft of the prime motor in a matching manner, and the adjacent cutter head connector on the outer side of the first body is guided to move by the first guide groove.

As a further improvement of the present invention, the second cutter head connector includes: a hollow second body; a plurality of second guide parts which are protruded and are arranged at the inner side of the second body; the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side; the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and the second guide part is matched with the guide groove adjacent to the inner side so as to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

As a further improvement of the present invention, the first blade hub connector further includes a plurality of first stoppers; the first limiting piece is arranged at the groove end of the first guide groove in a protruding mode so as to limit the guide portion matched with the first limiting piece to slide out, namely limit the cutter head connector adjacent to the outer side of the first cutter head connector to be separated from the surface of the first cutter head connector.

As a further improvement of the present invention, at least one third cutter head connector is further disposed between the first cutter head connector and the second cutter head connector.

As a further improvement of the present invention, the third cutter head connector includes: a hollow third body; the plurality of third protruding guide parts are positioned on the inner side of the third body and are matched with the guide grooves adjacent to the inner side of the third body; and a plurality of third guide grooves which are positioned at the outer side of the third body and are matched with the guide parts adjacent to the outer side of the third body.

As a further improvement of the present invention, a plurality of third position limiting members are disposed on the third cutter head connector; the third limiting piece is arranged at the groove end of the third guide groove in a protruding mode so as to limit the guide portion matched with the third limiting piece to slide out, namely limit the cutter head connector adjacent to the outer side of the third cutter head connector to be separated from the surface of the third cutter head connector.

As a further improvement of the invention, the adjusting piece comprises an auxiliary height-adjusting rod; the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

As a further improvement of the invention, the mounting end of the auxiliary height-adjusting rod is clamped in the first body through a first limiting piece; an adjusting groove is formed in the adjusting end of the auxiliary height adjusting rod; and the cutter head is provided with a threaded through hole suitable for the movement of the adjusting end.

As a further improvement of the invention, a spring washer is arranged between the auxiliary height-adjusting rod and the output shaft end of the prime mover.

The invention also discloses a lawn mower comprising: a housing; a prime mover located within the housing; the cutter head auxiliary height-adjusting assembly is fixedly arranged on an output shaft of the prime motor; the cutter head is positioned at the bottom of the auxiliary cutter head height-adjusting assembly; the prime motor is suitable for driving the cutter head to rotate; and the auxiliary height-adjusting assembly of the cutter head is suitable for adjusting the height of the cutter head.

As a further improvement of the present invention, the cutter head auxiliary height-adjusting assembly comprises: at least two cutter head connectors are movably sleeved from inside to outside in sequence; the first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover; the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

As a further improvement of the present invention, the first blade hub connector includes: a hollow first body; the first guide grooves are respectively arranged at the outer side of the first body; and the first body is tightly sleeved on the outer side of the output shaft of the prime motor in a matching manner, and the adjacent cutter head connector on the outer side of the first body is guided to move by the first guide groove.

As a further improvement of the present invention, the second cutter head connector includes: a hollow second body; a plurality of second guide parts which are protruded and are arranged at the inner side of the second body; the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side; the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and the second guide part is matched with the guide groove adjacent to the inner side so as to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

As a further improvement of the present invention, the first blade hub connector further includes a plurality of first stoppers; the first limiting piece is arranged at the groove end of the first guide groove in a protruding mode so as to limit the guide portion matched with the first limiting piece to slide out, namely limit the cutter head connector adjacent to the outer side of the first cutter head connector to be separated from the surface of the first cutter head connector.

As a further improvement of the present invention, at least one third cutter head connector is further disposed between the first cutter head connector and the second cutter head connector; the third cutter head connector includes: a hollow third body; the plurality of third protruding guide parts are positioned on the inner side of the third body and are matched with the guide grooves adjacent to the inner side of the third body; and a plurality of third guide grooves which are positioned at the outer side of the third body and are matched with the guide parts adjacent to the outer side of the third body.

As a further improvement of the present invention, a plurality of third position limiting members are disposed on the third cutter head connector; the third limiting piece is arranged at the groove end of the third guide groove in a protruding mode so as to limit the guide portion matched with the third limiting piece to slide out, namely limit the cutter head connector adjacent to the outer side of the third cutter head connector to be separated from the surface of the third cutter head connector.

As a further improvement of the invention, the adjusting piece comprises an auxiliary height-adjusting rod; the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

As a further improvement of the invention, the mounting end of the auxiliary height-adjusting rod is clamped in the first body through a first limiting piece; an adjusting groove is formed in the adjusting end of the auxiliary height adjusting rod; and the cutter head is provided with a threaded through hole suitable for the movement of the adjusting end.

As a further improvement of the invention, a spring washer is arranged between the auxiliary height-adjusting rod and the output shaft end of the prime mover.

The invention has the beneficial effects that: the auxiliary height-adjusting assembly for the cutter head realizes the height adjustment of the cutter head from the ground by adjusting the distance between the cutter head and the output shaft of the prime motor, and has simple structure and easy operation.

Drawings

Figure 1 is an exploded view of the cutterhead auxiliary elevation assembly of the present invention.

Figure 2 is a cross-sectional view of the cutterhead auxiliary elevation assembly.

Figure 3 is a top view of the cutterhead auxiliary elevation assembly.

Fig. 4 is a perspective view of the cutterhead auxiliary elevation assembly at a bottom angle.

Figure 5a is a schematic view of the cutterhead auxiliary elevation assembly lowering the cutterhead.

Figure 5b is a schematic view of the height adjustment cutterhead of the cutterhead auxiliary height adjustment assembly.

FIG. 6a is a perspective view of the first cutterhead connector from a top view.

Fig. 6b is a perspective view of the first cutterhead connector at a bottom angle.

Figure 7a is a perspective view of the second cutterhead connector from a top view.

Figure 7b is a perspective view of the second cutterhead connector at a bottom angle.

Figure 8a is a top perspective view of the third cutterhead connector.

Figure 8b is a perspective view of the third cutterhead connector at a bottom angle.

Fig. 9 is a perspective view of the auxiliary heightening rod at a bottom view angle.

Fig. 10 is a perspective view of a first lawnmower according to the present invention from a top view.

Fig. 11 is a perspective view of a first lawnmower of the present invention from a bottom perspective.

Fig. 12 is an exploded perspective view of the auxiliary blade height adjusting unit of the first mower according to the present invention.

Fig. 13 is a sectional view a-a in fig. 10.

Fig. 14 is an enlarged view of a portion B in fig. 13.

Fig. 15a is a schematic view of a first mower with the height of the cutterhead adjusted low.

Fig. 15b is a schematic view of a first mower adjusting the height of the cutterhead.

Fig. 15c is a schematic view of a first mower raising the height of the cutterhead.

Fig. 16 is a top perspective view of a second lawnmower according to the present invention.

Fig. 17 is a perspective view of a second lawnmower of the present invention from a bottom perspective.

Fig. 18 is a cross-sectional view taken along line C-C of fig. 16.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-9, the present invention discloses an auxiliary height-adjusting assembly 100 for a cutter head, comprising: at least two cutter head connectors are movably sleeved from inside to outside in sequence; wherein the first cutterhead connector 110, located at the innermost side, is fixedly mounted on the output shaft of the prime mover 200; a second cutter head connector 120 located at the outermost side for connecting the cutter head 300; and an adjusting member 130 for moving the second cutter head connector 120 along the surface of the first cutter head connector 110 to adjust the height of the cutter head 300.

Optionally, the number of the cutter head connectors is at least two, and when the number of the cutter head connectors is two, the second cutter head connector 120 is directly movably sleeved on the surface of the first cutter head connector 110. When the number of the cutter head connectors is more than two, the rest cutter head connectors are third cutter head connectors, and all the third cutter head connectors are positioned between the first cutter head connector and the second cutter head connector and are movably sleeved from inside to outside in sequence. As shown in the drawings, the case where the number of cutter head connectors is three is described, but it cannot be said narrowly that the number of cutter head connectors is three.

As an alternative embodiment of the first blade hub connector.

Referring to fig. 6 a-6 b, the first blade hub connector 110 includes: a hollow first body 111; a plurality of first guide grooves 112 respectively formed at the outer side of the first body 111; and the first body 111 is tightly sleeved on the outer side of the output shaft of the prime mover 200, and the adjacent cutter head connector on the outer side is guided to move by the first guide groove 112.

Optionally, the first body 111 is a hollow cylinder, and both ends of the first body are open, so as to facilitate sleeving the output shaft of the prime mover 200 and installing the auxiliary height-adjusting rod. And the first guide grooves 112 are uniformly distributed on the surface of the first body 111, and the first guide grooves 112 have the same height as the first body 111, that is, the first guide grooves 112 are through grooves.

Optionally, referring to fig. 6b, the lower end of the first body 111 is further provided with a plurality of first mounting holes 113 for mounting the first limiting members 114. The first limiting member 114, such as but not limited to a screw or a bolt, is installed in the first installation hole 113 through a thread; the wide head 1141 of the first retainer 114 protrudes out of the groove end of the first guide groove 112 to limit the guide portion fitted therein from slipping out, i.e., to limit the cutter head connector adjacent to the outside of the first cutter head connector 110 from being separated from the surface of the first cutter head connector 110. In this case, when there are two cutter head connectors, the wide head 1141 of the first position limiter 114 is used to limit the second cutter head connector 120 from disengaging from the surface of the first cutter head connector 110; when there are at least three cutter head connectors, the wide head 1141 of the first retainer 114 serves to limit the disengagement of the third cutter head connector from the surface of the first cutter head connector 110.

As an alternative embodiment of the second cutterhead connector.

Referring to fig. 7 a-7 b, the second cutter head coupling 120 includes: a hollow second body 121; a plurality of protruding second guide portions 122 respectively disposed at an inner side of the second body 121; an opening end 123, which is located at one end of the second body 121, and is used for sleeving the cutter head connector inside; a closed end 124 at the other end of the second body 121 for mounting the adjusting member 130; and the second guide portion 122 is fitted with the inner adjacent guide groove to guide the second cutter deck connector 120 to move along the inner adjacent cutter deck connector thereof.

Optionally, the second body 121 is hollow and cylindrical, and one end of the second body is open (i.e., the open end 123), so as to facilitate sleeving of a cutter head connector inside the second body, such as the first cutter head connector 110 or the third cutter head connector; the other end is closed (i.e., closed end 124) for mounting the impeller 300 and the adjustment end of the auxiliary height adjustment bar. And the second guide parts 122 are uniformly distributed on the inner surface of the second body 121; the second guide part 122 includes a plurality of second long protrusions 1221 and a plurality of second short protrusions 1222 which are staggered; wherein the height of the second long protrusion 1221 is equal to the height of the second body 121; the second short protrusion 1222 has a height less than the height of the second body 121 and is disposed proximate the open end 123 of the second body 121 to cooperate with a corresponding stop to limit the disengagement of the second cutter head connector 120 from the third cutter head connector or the first cutter head connector 110 surface.

As a further improvement of the present invention, at least one third cutter head connector 140 is further disposed between the first cutter head connector 110 and the second cutter head connector 120. When the number of the third cutter head connectors 140 is one, that is, the number of the cutter head connectors in the cutter head auxiliary height-adjusting assembly is three; when the number of the third cutter head connectors 140 is at least two, that is, the number of the cutter head connectors in the auxiliary cutter head height-adjusting assembly is at least four, and the structures of the third cutter head connectors may be the same, but the sizes are different, so as to be movably sleeved from inside to outside in sequence.

Optionally, the closed end of the second body 121 is further provided with a plurality of cutter disc mounting holes 125 for fastening with the cutter disc 300 through fasteners 126. The cutter head mounting hole 125 is located at the bottom of the second long protrusion 1221.

As an alternative embodiment of the third cutter head coupling.

Referring to fig. 8 a-8 b, the third cutter head coupling 140 includes: a hollow third body 141; a plurality of protruding third guiding parts 142 located at the inner side of the third body 141 and adapted to the guiding grooves adjacent to the inner side thereof; and a plurality of third guide grooves 143 located at the outer side of the third body 141 and adapted to the guide portions adjacent to the outer side thereof.

Optionally, the third body 141 is hollow and cylindrical, and both ends thereof are open, so as to facilitate sleeving of the cutter head connector inside the third body. And the third guide grooves 143 are uniformly distributed on the surface of the third body 141, and the third guide grooves 143 have the same height as the third body 141, that is, the third guide grooves 143 are through grooves. And the third guide parts 142 are uniformly distributed on the inner surface of the third body 141; the third guide part 142 includes a plurality of third long protrusions 1421 and a plurality of third short protrusions 1422 arranged in a staggered manner; wherein the height of the third long protrusion 1421 is equal to the height of the third body 141; the third short protrusion 1422 has a height less than the height of the third body 141 and is disposed near the lower end of the third body 141 to cooperate with a corresponding stop to limit the disengagement of the second cutterhead connector 120 or other third cutterhead connectors from the third cutterhead connector surface. In this case, the third guide portions 142 and the third guide grooves 143 may be in one-to-one correspondence and disposed at inner and outer sides of the third body 141. Of course, the third guide portions 142 and the third guide grooves 143 may be alternatively disposed, as long as the assembling requirements are satisfied.

Optionally, referring to fig. 8b, a plurality of third mounting holes 144 are further disposed at the lower end of the third body 141 for mounting a third limiting member 145; the third mounting hole 144 is located at the bottom of the third long protrusion 1221. The third limiting member 145, such as, but not limited to, a screw or a bolt, which may have the same structure as or different structure from the first limiting member 114, is installed in the third installation hole 144 through a screw thread; the wide head 1451 of the third stopper 145 protrudes beyond the groove end of the third guide groove 143 to restrict the guide portion fitted thereto from sliding out, i.e., to restrict the cutter deck connector adjacent to the outside of the third cutter deck connector from being disengaged from the surface of the third cutter deck connector. In the present case, as shown in fig. 4, the wide head 1141 of the first retainer 114 serves to restrain the first cutter head connector 110 from disengaging from the surface of the third cutter head connector 140; when there are three cutter head connectors, the wide head 1451 of the third stopper 145 serves to restrict the second cutter head connector 120 from disengaging from the surface of the third cutter head connector 140 from the bottom; when the cutter head connectors are at least four, the wide head 1451 of the third stopper 145 serves to restrict the cutter head connector outside thereof from coming off the surface of the third cutter head connector.

As an alternative embodiment of the adjustment member.

Referring to fig. 9, the adjusting member 130 includes an auxiliary height-adjusting lever 131; the mounting end 132 of the auxiliary height-adjusting rod 131 is abutted against the output shaft end of the prime mover 200, and the adjusting end 133 of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head 300; and the auxiliary height-adjusting rod 131 is rotated, and the cutter head 300 drives the second cutter head connector 120 to move. And the closed end 124 of the second body is provided with a through hole 127 for the auxiliary height adjusting rod 131 to extend through. Of course, other structural holes 128 may be provided on the closed end 124 of the second body 121 for assembly or observation or weight reduction.

Optionally, referring to fig. 14, the mounting end 132 of the auxiliary height-adjusting rod 131 is clamped in the first body 111 through the first limiting member 114; an adjusting groove 134 is arranged on the adjusting end 133 of the auxiliary height-adjusting rod 131; and the cutter disc 300 is provided with a threaded through hole 310 suitable for the movement of the adjusting end 133.

As a further improvement of the present invention, see fig. 1 and 2, a spring washer 150 is further provided between the auxiliary height adjusting rod 131 and the output shaft end of the prime mover 200.

In this case, the process of adjusting the height of the cutter head by the cutter head auxiliary height-adjusting assembly is as follows, which can be summarized as the following two cases, but other possible embodiments of adjusting the height of the cutter head by the cutter head auxiliary height-adjusting assembly should also be within the scope of the present application.

(1) The process of adjusting the height of the cutter head through the two cutter head connectors is as follows: the auxiliary height-adjusting rod 131 can be manually or otherwise engaged in the adjusting groove 134, for example, by using a tool such as a screwdriver, and the like, and rotated, so that the auxiliary height-adjusting rod 131 drives the cutter to ascend or descend when rotating, and at this time, the cutter drives the second cutter connector 120 to move along the first cutter connector 110, thereby completing the height adjustment of the cutter. The adjustment process of the cutter head and the movement process of the cutter head connector are both simple and will not be illustrated for the moment.

(2) Because the process of adjusting the height of the cutterhead by three or more cutterhead connectors is similar, the height adjusting action of the cutterhead is explained only by taking the number of the cutterhead connectors as 3 as an example, and the specific adjusting process is as follows: as shown in fig. 5 a-5 b or fig. 15 a-15 c, the first cutter head connector 110, the third cutter head connector 140 and the second cutter head connector 120 are movably sleeved from inside to outside in sequence. To facilitate the process of adjustment of the cutter head, (1) assuming that the cutter head 300 is at the lowest height (as shown in fig. 5a or fig. 15 a), the first limiting member 114 is installed on the first installation hole 113, and the wide head 1141 of the first limiting member 114 protrudes out of the first guide slot 112 and abuts against the bottom of the third short protrusion 1422, so as to limit the third cutter head connector from being disengaged from the outside of the first cutter head connector 110; the wide head 1141 of the first position-limiting member 114 also protrudes out of the hollow portion of the first body 111 and abuts against the bottom of the mounting end 132 of the auxiliary height-adjusting rod 131 to limit the auxiliary height-adjusting rod 131 from disengaging from the inner side of the first blade hub connector 110. The third stopper 145 is mounted on the third mounting hole 144, and the wide head 1451 of the third stopper 145 protrudes out of the third guide groove 143 and abuts against the bottom of the second short protrusion 1222 to restrict the second cutter deck connector 120 from being disengaged from the outside of the third cutter deck connector 140. (2) The auxiliary height-adjusting rod 131 is rotated in the manner described above, so that the auxiliary height-adjusting rod 131 drives the cutter head 300 to ascend when rotating, and at this time, the cutter head 300 drives the second cutter head connector 120 to move along the surface of the third cutter head connector 140, so as to increase the height of the cutter head above the ground. (3) When the closed end 124 (bottom end) of the second cutter head connector 120 abuts against the third limiting member 145 or the bottom of the third body 141, that is, the second cutter head connector 120 is completely sleeved outside the third disk connector 140. (4) The second cutter head connector 120 continues to move upwards, the third cutter head connector 140 is driven by the second cutter head connector 120 to move along the surface of the first cutter head connector 110 (as shown in fig. 15 b), the ground clearance of the cutter head continues to be increased until the third cutter head connector 140 is completely sleeved outside the first cutter head connector 110, at this time, the first cutter head connector 110, the third cutter head connector 140 and the second cutter head connector 120 are completely sleeved from inside to outside in sequence, and the closed end of the second cutter head connector 120 is abutted against the bottom of the first cutter head connector 110, so that the cutter head 300 is adjusted to a higher position.

In addition, the present invention also provides a lawnmower comprising: a housing; the prime mover is positioned in the shell; the cutter head auxiliary height adjusting group is fixedly arranged on an output shaft of the prime motor; the cutter head is positioned at the bottom of the auxiliary cutter head height-adjusting assembly; the prime motor is suitable for driving the cutter head to rotate; and the auxiliary height-adjusting assembly of the cutter head is suitable for adjusting the height of the cutter head. Optionally, the top of the casing is further provided with a movable upper cover.

Optionally, the cutterhead auxiliary height-adjusting assembly is mounted on an output shaft of a prime mover, such as but not limited to an electric motor, in a tight fit manner, for example and not limited to. The structure and the specific working process of the cutter head auxiliary height-adjusting assembly can refer to the related description of the process of adjusting the height of the cutter head through the cutter head auxiliary height-adjusting assembly in the scheme.

In the scheme, the type and the type of the mower are not limited, and the height of the cutter can be adjusted through the cutter auxiliary height adjusting assembly. The following two types of lawn mowers are listed for illustrating the assembly relationship and operation of the cutter head auxiliary height adjusting assembly in the lawn mowers, but should not be construed as limiting the type of lawn mowers.

Referring to fig. 10-15 c, the present invention also discloses a first lawnmower comprising: a housing 400; the prime mover 200 is positioned in the casing 400; the cutter disc auxiliary height-adjusting assembly 100 is fixedly arranged on an output shaft of the prime mover 200; the cutter head 300 is positioned at the bottom of the cutter head auxiliary height-adjusting assembly 100; the prime motor 200 is suitable for driving the cutter head to rotate; and the cutterhead auxiliary height adjustment assembly 100 is adapted to adjust the height of the cutterhead 300. Optionally, a movable upper cover 500 is further disposed on the top of the casing 400. Wherein, the first mower further comprises a driving assembly 600 positioned at the bottom of the housing; wherein the drive assembly 600 includes a pair of drive wheels 610 and a pair of road wheels 620.

Optionally, the cutterhead auxiliary height-adjusting assembly 100 is mounted on an output shaft of a prime mover 200, such as but not limited to a motor, in a tight fit manner, for example. The structure and the specific working process of the cutter head auxiliary height-adjusting assembly can refer to the related description of the process of adjusting the height of the cutter head through the cutter head auxiliary height-adjusting assembly in the scheme.

Referring to fig. 16-18, the present invention also discloses a second lawnmower comprising: a housing 400; the prime mover 200 is positioned in the casing 400; the cutter disc auxiliary height-adjusting assembly 100 is fixedly arranged on an output shaft of the prime mover 200; the cutter head 300 is positioned at the bottom of the cutter head auxiliary height-adjusting assembly 100; the prime motor 200 is suitable for driving the cutter head to rotate; and the cutterhead auxiliary height adjustment assembly 100 is adapted to adjust the height of the cutterhead 300. Optionally, a movable upper cover 500 is further disposed on the top of the casing 400. Wherein, the first mower further comprises a driving assembly 600 positioned at the bottom of the housing; wherein the drive assembly 600 includes a pair of drive wheels 610 and a road wheel 620. A protective cover 700 is arranged below the cutter head 300.

Optionally, the cutterhead auxiliary height-adjusting assembly 100 is mounted on an output shaft of a prime mover 200, such as but not limited to a motor, in a tight fit manner, for example. The structure and the specific working process of the cutter head auxiliary height-adjusting assembly can be described by referring to the process of adjusting the height of the cutter head through the cutter head auxiliary height-adjusting assembly in the scheme.

In the scheme, the first mower and the second mower respectively comprise a machine shell and a cutter head auxiliary height-adjusting assembly positioned on the machine shell. The structure of the cutter head auxiliary height-adjusting assembly is similar, the function of the cutter head auxiliary height-adjusting assembly is the same, the cutter head auxiliary height-adjusting assembly is only limited to the appearance structure of the mower and other designs of the machine shell, the installation position and the matching relation of the cutter head auxiliary height-adjusting assembly are different, the structure of the cutter head auxiliary height-adjusting assembly cannot be substantially improved, the working processes of the cutter head auxiliary height-adjusting assembly in the two mowers are basically the same, and the cutter head auxiliary height-adjusting assembly and the two mowers.

In summary, compared with the prior art, the auxiliary height-adjusting assembly for the cutter head of the invention has the advantages of simple structure, stable adjustment, easy operation and the like, and the distance between the cutter head and the output shaft is adjusted by the at least two cutter head connectors which are movably sleeved from inside to outside and the adjusting piece which is combined to drive the second cutter head connector to move along the surface of the first cutter head connector.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.