CN102084753B - Mowing blade of mowing machine - Google Patents
Mowing blade of mowing machine Download PDFInfo
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- CN102084753B CN102084753B CN2010105360999A CN201010536099A CN102084753B CN 102084753 B CN102084753 B CN 102084753B CN 2010105360999 A CN2010105360999 A CN 2010105360999A CN 201010536099 A CN201010536099 A CN 201010536099A CN 102084753 B CN102084753 B CN 102084753B
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- cutter hub
- blade
- cuts
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- guide board
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Abstract
The invention provides a mowing blade of a mowing machine. A connection hole a is processed on the bottom of the blade body, a knife edge is processed on the front end of the blade body, an upward-bent grass guiding board is folded from the outer side of the rear end of the blade body, an include angle beta between the grass guiding board and a plane of the blade body is 120-160 DEG, an include angle gamma between the intersecting line formed by the grass guiding board and the blade body and the knife edge at the front end of the blade body is 30-45 DEG. A rectangle block with a ratio of length to width of 3:1 is cut off from the rear side of the outer end of the blade body, the ratio of the width of the blade body to the length of the cut-off rectangle block is 1:(0.3-0.5), a side blade with an angle alpha of 30-60 DEG is formed by downwards folding the residual part at the front side of the outer end of the blade body, the distance from the intersecting line formed by the side blade and the blade body to the lower end of the side blade is equal to the width of the cut-off rectangle block, at least one inverted V-shaped grass-hooking groove is processed at the lower end of the side blade, and side knife edges with knife edge angles of 10-30 DEG are processed at the lower end of the side blade and at two side edges of the inverted V-shaped grass-hooking groove.
Description
Technical field
The invention belongs to mowing equipment or device technique field, be specifically related to the parts of mower.
Background technology
The both sides of airport runways, connecting taxiway, taxiway, hot season in summer weed growth vigorous, the height uneven; There are some grass to look very high, have some grass to look low, the weeds of the both sides of runway, connecting taxiway, taxiway; Shelter from the light of airport runways, connecting taxiway, taxiway both sides; Have influence on flight safety, these weeds need be cut off and clear up termly.
The mower of selling in the market mainly contains three kinds, and a kind of is large-scale mower, by the rotation of engine drives saw disc, the straight knife sheet is installed on the saw disc mows; This mower is mainly used on the grassland mows, and grass cuts down with after airing regathers back stores for future use, and large-scale mower can not cut low weeds; And grass can not be cleaned out the weeds of being cut down after cutting down at once, after weeds are rotten, infested; Attract many birds, have influence on flight safety, also need manual work to clear up.Another kind is small-sized mower; Drive the straight blade rotation of a slice by a put-put and mow, this mower is mainly used in the lawn of park public place of entertainment plantation and mows, and it is all lower that the grass on lawn is grown; After grass is cut down, clear up by manual work again.Also have a kind of large-scale associating mower, its primary structure is that the rotation of engine drives blade is mowed, and engine drives air exhauster rotation simultaneously produces negative pressure the grass that is cut is down collected.The mowing blade of these several kinds of mowers is the straight knife sheet, and major defect is to cut the straight grass that grows into vertically upward, can not cut lodging grass and the weeds that overgrow on the ground on the ground.The grass of airport runways, connecting taxiway, taxiway is grown more vigorously; Aircraft takes off on runway, lands, taxiway with get in touch with when sliding, the tail gas stream speed of aircraft jet pipe ejection is big; The grass of runway, connecting taxiway, taxiway both sides is blown down; Above-mentioned three kinds of mowers, during the weeds of both sides of cutting off airport runways, connecting taxiway, taxiway and the grass of lodging, mowing efficient is very low.
Inventor of the present invention has developed a kind of careless associating mower in both sides that is suitable for cutting airport runways, connecting taxiway, taxiway, and the urgent technical problem that solves of the current need of this machine provides the blade of a kind of weeds that can cut the grass of lodging and overgrow.
Summary of the invention
Technical problem to be solved by this invention is to overcome the shortcoming of above-mentioned mower blade, and a kind of mowing blade of reasonable in design, simple in structure, mower that mowing efficient is high is provided.
Solving the problems of the technologies described above the technical scheme that is adopted is: the root at cutter hub is processed with connection holes a; The front end of cutter hub is processed with blade; It is 3: 1 rectangular block that the grass guide board that the rear end folded of cutter hub becomes to be bent upwards, the outer-end rear side of cutter hub cut a long and wide ratio, and the length that cuts rectangular block is identical with the width of cutter hub; The length direction of wide and cutter hub that cuts rectangular block is identical; Cutter hub wide with the ratio that cuts the rectangle block length be 1: 0.3～0.5, it is 30 °～60 ° side blade that front side, the outer end rest parts of cutter hub is folded into α downwards, the intersection of side blade and cutter hub equates with the wide of the rectangular block that cuts to the distance of side blade lower end; The lower end of side blade is processed with the careless groove of colluding of 1 inverted v-shaped at least, and it is 10 °～30 ° side tool sword that the lower end of side blade and the dual-side of inverted v-shaped are processed with tool point angle.Distance between the top and bottom of grass guide board of the present invention, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub; Angle β between grass guide board and the cutter hub plane is 120 °～160 °, the intersection of grass guide board and cutter hub, and cutter hub before angle γ between the terminal knife edge be 30 °～45 °.
It is 3: 1 rectangular block that the outer-end rear side of cutter hub of the present invention cuts a long and wide ratio; The length that cuts rectangular block is identical with the width of cutter hub; The length direction of wide and cutter hub that cuts rectangular block is identical; Cutter hub wide with the ratio the best that cuts the rectangle block length be 1: 0.4, it is 45 ° side blade that front side, outer end downward the best of rest parts of cutter hub is folded into α, the intersection of side blade and cutter hub equates with the wide of the rectangular block that cuts to the distance of side blade lower end; The lower end of side blade is processed with the careless groove of colluding of 1 inverted v-shaped at least, and it is 10 °～30 ° side tool sword that the lower end of side blade and the dual-side of inverted v-shaped are processed with tool point angle.Distance between the top and bottom of grass guide board of the present invention, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub; Angle β the best between grass guide board and the cutter hub plane is 140 °, the intersection of grass guide board and cutter hub, and cutter hub before angle γ the best between the terminal knife edge be 40 °.
The outer end that the present invention is employed in cutter hub is folded into reclinate side blade, is processed with the careless groove of colluding of inverted v-shaped on the side blade, has enlarged the area of blade, can will lodge on the ground weeds cut down and cut into pieces; Be bent upwards into grass guide board in the cutter hub outer-end rear side, grass guide board makes the weeds of shredding under the air exhauster suction function of mower, after grass guide board upwards flow to air exhauster, discharges.The present invention is installed on the cutterhead of mower development test through reaching 6 months; Mower of the present invention is installed; Grass that can will be upright and the weeds that lodge on the ground triggered, and weeds are cut down and cut into pieces by the blade of the blade of cutter hub front end and side blade.Advantage such as that the present invention has is reasonable in design, mowing and chaffcutter are effective, be installed in the present invention on the mower after, be applicable to cut airport runways, taxiway, connecting taxiway both sides very much the weeds and the grass of lodging.
Description of drawings
Fig. 1 is the front view of one embodiment of the invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A profile of Fig. 2.
Embodiment
To further explain of the present invention, but the invention is not restricted to these embodiment below in conjunction with accompanying drawing and embodiment.
In Fig. 1,2,3, the mowing blade of the mower of present embodiment is connected as a single entity and is constituted by cutter hub 1, grass guide board 2, side blade 3, blade 4.
The cutter hub 1 of present embodiment is that root is shaped as semicircle and the rectangle formation that is connected as a single entity; It is 3: 1 rectangular block that the outer-end rear side of cutter hub 1 cuts a long and wide ratio; The length that cuts rectangular block is identical with the width of cutter hub 1; The length direction of wide and cutter hub 1 that cuts rectangular block is identical, cutter hub 1 wide with the ratio that cuts the rectangle block length be 1: 0.4.Be processed with 20 ° blade 4 at the front end of cutter hub 1; Also can be processed into 10 ° blade 4, also can be processed into 30 ° blade 4, blade 4 is used for mowing; The root of cutter hub 1 is processed with connection holes a; Connection holes a is used for the present invention is installed in the cutterhead of mower, and cutterhead is mowed by the power set driven in rotation on the ground.It is 45 ° side blade 3 that front side, cutter hub 1 outer end rest parts is folded into α downwards, and the intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts that to the distance of side blade 3 lower ends the lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; Also can be processed with the careless groove of colluding of 4 inverted v-shapeds; The angle that inverted v-shaped colludes careless groove dual-side is 60 °, and the concrete number of colluding careless groove of inverted v-shaped should confirm according to the width of side blade 3 lower ends, during the wider width of the lower end of side blade 3; The colluding careless groove and can be processed into the inverted v-shaped that is connected as a single entity of head and the tail of inverted v-shaped; Be zigzag, it is 20 ° side tool sword that the dual-side that the lower end of side blade 3 and inverted v-shaped collude careless groove is processed with tool point angle, also can be processed into 10 ° side tool sword; Also can be processed into 30 ° side tool sword; The side tool sword of side blade 3 lower ends and inverted v-shaped dual-side has increased the area of blade 4, and side blade 3 is folding downwards; The weeds that side blade 3 can will lodge are on the ground triggered, and by the side tool sword of the blade 4 of cutter hub 1 front end and side blade 3 weeds are cut and to be cut into pieces.
The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle β between grass guide board 2 and cutter hub 1 plane is 140 °; The intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 40 °, grass guide board 2 is used for weeds with chopping under the suction function of the air exhauster of mower, after grass guide board 2 upwards flow to air exhauster, discharges.
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 30 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 120 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 30 °.The annexation of other parts and parts is identical with embodiment 1.
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 60 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 160 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 45 °.The annexation of other parts and parts is identical with embodiment 1.
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 30 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 160 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 45 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 5
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 30 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 120 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 45 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 6
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 30 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 160 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 30 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 7
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 60 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 120 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 30 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 8
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 60 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 160 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 30 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 9
In the present embodiment, to cut the geometry of rectangular block identical with embodiment 1 for the outer-end rear side of cutter hub 1.It is 60 ° side blade 3 that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade 3 and cutter hub 1 equates with the wide of the rectangular block that cuts to the distance of side blade 3 lower ends; The lower end of side blade 3 is processed with the careless groove of colluding of 1 inverted v-shaped; The careless groove dual-side that colludes of the lower end of side blade 3 and inverted v-shaped is processed with the side tool sword, and the tool point angle of side tool sword is identical with embodiment 1.The grass guide board 2 that the rear end folded of cutter hub 1 becomes to be bent upwards; Distance between the top and bottom of grass guide board 2, cut the appearance etc. of rectangular block with the outer-end rear side of cutter hub 1; Angle between grass guide board 2 and cutter hub 1 plane is that β is 120 °, the intersection of grass guide board 2 and cutter hub 1, and cutter hub 1 before angle γ between the terminal knife edge 4 be 45 °.The annexation of other parts and parts is identical with embodiment 1.
Embodiment 10
In above embodiment 1～9; It is 3: 1 rectangular block that the outer-end rear side of cutter hub 1 cuts a long and wide ratio; The length that cuts rectangular block is identical with the width of cutter hub 1; The length direction of wide and cutter hub 1 that cuts rectangular block is identical, cutter hub 1 wide with the ratio that cuts the rectangle block length be 1: 0.3, the annexation of other parts and parts is identical with respective embodiments.
Embodiment 11
In above embodiment 1～9; It is 3: 1 rectangular block that the outer-end rear side of cutter hub 1 cuts a long and wide ratio; The length that cuts rectangular block is identical with the width of cutter hub 1; The length direction of wide and cutter hub 1 that cuts rectangular block is identical, cutter hub 1 wide with the ratio that cuts the rectangle block length be 1: 0.5, the annexation of other parts and parts is identical with respective embodiments.
Also can design the mowing blade of the mower of other a kind of concrete structure according to above-mentioned principle, but all within protection scope of the present invention.
Claims (2)
1. the mowing blade of a mower; Root at cutter hub (1) is processed with connection holes (a); The front end of cutter hub (1) is processed with blade (4); The grass guide board (2) that the rear end folded of cutter hub (1) becomes to be bent upwards is characterized in that: it is 3: 1 rectangular block that the outer-end rear side of cutter hub (1) cuts a long and wide ratio, and the length that cuts rectangular block is identical with the width of cutter hub (1); The length direction of wide and cutter hub (1) that cuts rectangular block is identical; Cutter hub (1) wide with the ratio that cuts the rectangle block length be 1: 0.3～0.5, it is 30 °～60 ° side blade (3) that front side, the outer end rest parts of cutter hub (1) is folded into α downwards, the intersection of side blade (3) and cutter hub (1) equates with the wide of the rectangular block that cuts to the distance of side blade (3) lower end; The lower end of side blade (3) is processed with the careless groove of colluding of 1 inverted v-shaped at least, and it is 10 °～30 ° side tool sword (4) that the lower end of side blade (3) and the dual-side of inverted v-shaped are processed with tool point angle; Distance between the top and bottom of described grass guide board (2) cuts appearance of rectangular block etc. with the outer-end rear side of cutter hub (1); Angle β between grass guide board (2) and cutter hub (1) plane is 120 °～160 °, and the intersection and the angle γ between the preceding terminal knife edge of cutter hub (1) (4) of grass guide board (2) and cutter hub (1) are 30 °～45 °.
2. according to the mowing blade of the described mower of claim 1; It is characterized in that: cutter hub (1) wide with the ratio that cuts the rectangle block length be 1: 0.4; It is 45 ° side blade (3) that front side, the outer end rest parts of cutter hub 1 is folded into α downwards; The intersection of side blade (3) and cutter hub (1) equates with the wide of the rectangular block that cuts to the distance of side blade (3) lower end; Angle β between grass guide board (2) and cutter hub (1) plane is 140 °, and the intersection of grass guide board (2) and cutter hub (1) and the angle γ between the preceding terminal knife edge of cutter hub (1) (4) are 40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105360999A CN102084753B (en) | 2010-11-05 | 2010-11-05 | Mowing blade of mowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105360999A CN102084753B (en) | 2010-11-05 | 2010-11-05 | Mowing blade of mowing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102084753A CN102084753A (en) | 2011-06-08 |
| CN102084753B true CN102084753B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105360999A Expired - Fee Related CN102084753B (en) | 2010-11-05 | 2010-11-05 | Mowing blade of mowing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102084753B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301862B (en) * | 2011-07-07 | 2014-07-16 | 宁波大叶园林设备有限公司 | Improved grass cutter with self-clutched blade |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381164A (en) * | 2001-04-19 | 2002-11-27 | 本田技研工业株式会社 | Blade used on mower |
| CN1406461A (en) * | 2001-09-06 | 2003-04-02 | 美瑞股份有限公司 | Rotary mower blade |
| CN101438653A (en) * | 2007-11-21 | 2009-05-27 | 力帆实业(集团)股份有限公司 | Knife blade rotary grass cutter of rotary grass cutter |
-
2010
- 2010-11-05 CN CN2010105360999A patent/CN102084753B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381164A (en) * | 2001-04-19 | 2002-11-27 | 本田技研工业株式会社 | Blade used on mower |
| CN1406461A (en) * | 2001-09-06 | 2003-04-02 | 美瑞股份有限公司 | Rotary mower blade |
| CN101438653A (en) * | 2007-11-21 | 2009-05-27 | 力帆实业(集团)股份有限公司 | Knife blade rotary grass cutter of rotary grass cutter |
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| CN102084753A (en) | 2011-06-08 |
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Effective date of registration: 20180711 Address after: 453000 456 Hua Lan Road, Xinxiang Development Zone, Henan Patentee after: HENAN XIN LU HANG TRAFFIC TECHNOLOGY CO.,LTD. Address before: 453003 456 Hua Lan Road, Xinxiang Development Zone, Henan Patentee before: Nie Wei |
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Granted publication date: 20120523 Termination date: 20211105 |