CN220191475U - Alfalfa stalk low damage small-size alfalfa mowing machine - Google Patents
Alfalfa stalk low damage small-size alfalfa mowing machine Download PDFInfo
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- CN220191475U CN220191475U CN202321815421.0U CN202321815421U CN220191475U CN 220191475 U CN220191475 U CN 220191475U CN 202321815421 U CN202321815421 U CN 202321815421U CN 220191475 U CN220191475 U CN 220191475U
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- 238000006243 chemical reaction Methods 0.000 claims description 8
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- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
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- 238000004088 simulation Methods 0.000 abstract description 4
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- 239000004459 forage Substances 0.000 description 2
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- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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Abstract
The utility model relates to a small alfalfa cutting machine with low damage to alfalfa stalks, which comprises a vehicle body, a cutter head hinged on the vehicle body and positioned below the vehicle body, cutting knives which are circumferentially arranged and fixedly connected on the cutter head for cutting the alfalfa stalks, and a driving structure for simultaneously driving the cutter head to rotate and the vehicle body to move, wherein the axis of the cutter head extends along the height direction. According to the utility model, through the arrangement of the driving structure, the cutter head is driven to rotate and the vehicle body is driven to move, the rotation speed and the advancing speed of the cutting machine and the sliding cutting angle of the cutting knife are optimally designed through cutting simulation and field test, the working parameter combination of the cutting machine with minimum damage to alfalfa cutting is determined, the transmission ratio of the cutting machine and the sliding cutting angle of the cutting knife are adjusted, and the low-damage alfalfa cutting of the small-sized cutting machine is realized; the height of the cutter head is adjusted so as to adapt to the stubble cutting heights of alfalfa in different seasons; through the setting of self-sharpening cutting knife, guarantee that the cutting knife can keep sharp blade for a long time, reduce alfalfa cutting damage.
Description
Technical Field
The utility model relates to the technical field of forage grass harvesting, in particular to a alfalfa low-damage mowing machine, and specifically relates to a alfalfa stalk low-damage small alfalfa mowing machine.
Background
Alfalfa is an important perennial leguminous forage grass, and is widely planted worldwide due to wide adaptability, high yield and rich nutritive value. Alfalfa is used as the fourth largest crop in the united states, with planting area next to corn, soybean, and wheat. In China, with the large development of milk industry and grass-eating animal husbandry in China in recent years, the planting area of alfalfa is continuously enlarged, and because the growing variety of alfalfa in China is relatively few, the growing demand of alfalfa planting in China on alfalfa varieties suitable for different areas cannot be met, so that a large number of alfalfa varieties are imported from the United states annually. Whether the adaptability, grass yield, stress resistance and the like of the foreign imported alfalfa varieties are suitable for complex climatic environments in China is always a problem that scientific researchers and vast planting users pay attention to.
The alfalfa stalk cutting operation is not only a prerequisite for fully utilizing alfalfa stalk resources, but also an important procedure for agricultural harvesting, but the currently used alfalfa stalk cutting has higher cutting damage to alfalfa, which is not beneficial to promoting the high yield and high harvest of alfalfa.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a small alfalfa cutting machine with low alfalfa stalks and low damage, which reduces alfalfa cutting damage and promotes high yield and harvest of alfalfa.
The utility model discloses a small alfalfa mowing machine with low damage to alfalfa stalks, which comprises a vehicle body, a cutter head hinged on the vehicle body and positioned below the vehicle body, cutters circumferentially arranged and fixedly connected on the cutter head for cutting the alfalfa stalks, and a driving structure for simultaneously driving the cutter head to rotate and the vehicle body to move, wherein the axis of the cutter head extends along the height direction.
When the alfalfa cutting machine is used, the cutter head is driven to rotate and the vehicle body is driven to move through the arrangement of the driving structure, the rotation speed and the advancing speed of the alfalfa cutting machine and the sliding cutting angle of the cutter are optimally designed through cutting simulation and field test, the working parameter combination with the minimal damage of the alfalfa cutting machine to the alfalfa cutting machine is determined, the transmission ratio of the alfalfa cutting machine and the sliding cutting angle of the cutter are adjusted, and the low-damage alfalfa cutting of the small-sized alfalfa cutting machine is realized.
Preferably, the cutting blade comprises a self-sharpening cutting blade. This preferred scheme guarantees that the cutting knife can keep sharp blade for a long time through the setting of autogenous sharpening cutting knife, reduces alfalfa cutting damage.
Preferably, the driving structure comprises a first belt wheel, a second belt wheel, a third belt wheel and a fourth belt wheel which are arranged in parallel with the axis of the cutter disc and are connected with the vehicle body in a shaft mode, at least two belt wheel grooves which are closed in the circumferential direction are formed in the circumferential surface of the first belt wheel, the first belt wheel is connected with the second belt wheel through a first V-shaped belt, the second belt wheel is fixedly connected with the cutter disc through a first rotating shaft, the first belt wheel is connected with the third belt wheel through a second V-shaped belt, the third belt wheel and the fourth belt wheel are coaxially arranged, the vehicle body is driven to move through a conversion structure, and a gasoline engine for driving the first belt wheel to rotate is further arranged on the vehicle body.
When the optimized scheme is used, the gasoline engine drives the first belt wheel to rotate, the first belt wheel drives the second belt wheel to rotate through the first V-shaped belt, and the second belt wheel is fixedly connected with the cutter head through the first rotating shaft, so that the cutter is driven to rotate, and the alfalfa is mowed; meanwhile, the first belt wheel drives the third belt wheel to rotate through the second V-shaped belt, and the vehicle body is driven to move through the fourth belt wheel and the conversion structure, so that the simultaneous operation of the rotation of the cutter head and the movement of the vehicle body is realized.
Preferably, the conversion structure comprises a fifth belt pulley connected with the fourth belt pulley through a third V-shaped belt, the fifth belt pulley is connected on the vehicle body through a fifth rotating shaft in a shaft mode, a worm which is fixedly connected with the fifth rotating shaft and used for being provided with an axis is further fixedly connected on the fifth rotating shaft, a worm wheel which is matched with the worm is further arranged in the vehicle body, two rear wheels of the vehicle body are connected on the vehicle body through a second rotating shaft in a shaft mode, and the worm wheel is fixedly connected on the second rotating shaft and used for being provided with the axis through the second rotating shaft.
According to the preferable scheme, the worm and gear are matched, so that the speed reduction with a large transmission ratio is facilitated.
Preferably, the vehicle body is further hinged with a tensioning wheel which is propped against the third V-shaped belt, the tensioning wheel, the fourth belt wheel and the fifth belt wheel are located above the vehicle body, and the vehicle body is further fixedly connected with a protective cover which is provided with an opening in the bottom surface and covers the tensioning wheel, the fourth belt wheel and the fifth belt wheel.
This preferred scheme passes through the setting of take-up pulley, is convenient for adjust the tensioning degree in third V type area, and when third V type area was too loose, the fourth band pulley just can't drive the rotation of fifth band pulley to be the automobile body and stop the removal, through the setting that take-up pulley, fourth band pulley and fifth band pulley are located the automobile body top, make full use of automobile body top the space, simultaneously through the setting of protection casing, play the guard action.
Preferably, a connecting pipe which extends upwards and is inserted by a first rotating shaft is fixedly connected to the top surface of the cutterhead, two pin holes which are distributed along the height direction are formed in the first rotating shaft, and a pin shaft which is inserted into one pin hole is arranged on the connecting pipe.
When the cutter head is inserted into the pin hole positioned below, the height of the cutter head corresponding to the cutter head is relatively low from the ground, the cutter head is adjusted to adapt to the alfalfa stubble cutting heights in different seasons, the stubble cutting heights are 5cm and 8cm, and therefore, when the cutter head is used, the distance between the two pin holes is 3cm.
Preferably, the bottom surface of the vehicle body is also provided with a protection plate positioned at the rear and the side of the cutter head, and the distance between the protection plate and the ground is lower than the distance between the cutter and the ground.
This preferred scheme plays the effect of protection cutting knife through the setting of guard plate.
Preferably, the spacing between the front and rear wheels of the vehicle body is 0.55m. The preferable scheme is to avoid the rolling of the front and rear wheels of the mowing machine on alfalfa, reduce the damage of the alfalfa, and enable the distance between the front wheel and the rear wheel of the vehicle body to be 0.55m, so that the front and rear wheels can be placed in gaps among alfalfa rows.
The beneficial effects of the utility model are as follows: through the arrangement of the driving structure, the cutter head is driven to rotate and the vehicle body is driven to move, the rotation speed and the advancing speed of the mowing machine and the sliding cutting angle of the cutter are optimally designed through cutting simulation and field test, the working parameter combination with the smallest damage to the alfalfa by the mowing machine is determined, the transmission ratio of the mowing machine and the sliding cutting angle of the cutter are adjusted, and the low-damage mowing of the alfalfa by the small-sized mowing machine is realized; through the arrangement of the self-sharpening cutter, the cutter can keep a sharp cutting edge for a long time, and the cutting damage of alfalfa is reduced; the tensioning degree of the third V-shaped belt is convenient to adjust through the arrangement of the tensioning wheel, when the third V-shaped belt is too loose, the fourth belt wheel cannot drive the fifth belt wheel to rotate, so that the vehicle body stops moving, the space above the vehicle body is fully utilized through the arrangement of the tensioning wheel, the fourth belt wheel and the fifth belt wheel above the vehicle body, and meanwhile, the protection effect is achieved through the arrangement of the protection cover; the depth of the connecting pipe inserted by the first rotating shaft is adjusted, namely the height of the cutter disc from the ground is adjusted, when the pin shaft is inserted into the pin hole positioned above, the height of the corresponding cutter disc from the ground is higher, when the pin shaft is inserted into the pin hole positioned below, the height of the corresponding cutter disc from the ground is relatively lower, and the height of the cutter disc is adjusted, so that the cutter head is suitable for the alfalfa stubble cutting heights in different seasons.
Drawings
FIG. 1 is a perspective view of the overall structure of the present utility model;
fig. 2 is a schematic view of the internal structure of the mowing machine;
fig. 3 is a schematic view from above of the interior of the swath machine;
fig. 4 is a schematic view of the bottom surface structure of the swath machine;
fig. 5 is a schematic view of a portion of the swath machine drive structure;
the figure shows:
1. the handrail, 2, the rear wheel, 3, the protection casing, 4, fourth band pulley, 5, petrol engine, 6, top plate, 7, front wheel, 8, blade disc, 9, cutting knife, 10, second band pulley, 11, first pivot, 12, first V type area, 13, first band pulley, 14, second V type area, 15, third band pulley, 16, worm wheel, 17, take-up pulley, 18, third V type area, 19, fifth band pulley, 20, bearing frame, 21, guard plate, 22, middle layer board.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-5, the small alfalfa cutting machine with low alfalfa stalk damage comprises a vehicle body, wherein the vehicle body comprises an upper layer plate 6, a middle layer plate 22 and a connecting plate for connecting the upper layer plate 6 and the middle layer plate 22, the connecting plate is circumferentially closed, a first space is formed by the upper layer plate 6, the middle layer plate 22 and the connecting plate, a second rotating shaft and a third rotating shaft are arranged on the connecting plate in a shaft connection manner along the moving direction of the vehicle body, the second rotating shaft and the third rotating shaft are both connected on the connecting plate in a shaft connection manner through bearing seats 20, two rear wheels 2 are fixedly connected on the second rotating shaft, two front wheels 7 are fixedly connected on the third rotating shaft, the alfalfa damage is reduced for avoiding the rolling of the front wheels and the rear wheels 2 of the cutting machine, the distance between the front wheels 7 and the rear wheels 2 is 0.55m, and the cutting width of the cutting machine is 0.5m for improving operability and adapting to hilly mountain land topography.
The upper plate 6 is fixedly connected with a gasoline engine 5, an output shaft of the gasoline engine 5 extends downwards into a first space, a first belt pulley 13 with an axis extending along the height direction is arranged in the first space, the output shaft of the gasoline engine 5 is fixedly connected with a rotating shaft of the first belt pulley 13, the upper plate 6 is also connected with a second belt pulley 10, a third belt pulley 15, a fourth belt pulley 4 and a fifth belt pulley 19 with axes parallel to the first belt pulley 13 in a shaft mode, three belt pulley grooves which are distributed along the axis direction of the first belt pulley 13 and are circumferentially closed are formed in the circumferential surface of the first belt pulley 13, two belt pulley grooves which are distributed along the axis direction of the first belt pulley 13 and are circumferentially closed are formed in the circumferential surface of the second belt pulley 10, the first belt pulley 13 is connected with the second belt pulley 10 through two first V-shaped belts 12, the first belt pulley 13 is connected with the third belt pulley 15 through a second V-shaped belt 14, the third belt pulley 15 is coaxially arranged with the fourth belt pulley 4, and the fourth belt pulley 4 is connected with a conversion structure.
The first pulley 13, the second pulley 10, the third pulley 15, the fourth pulley 4, the gasoline engine 5, and the conversion structure form a driving structure.
The conversion structure comprises a fifth belt pulley 19 connected with the fourth belt pulley 4 through a third V-shaped belt 18, the fifth belt pulley 19 is connected with the upper layer plate 6 through a fifth rotating shaft in a shaft mode, a worm which is arranged on the axis of the fifth rotating shaft is fixedly connected on the fifth rotating shaft, a worm wheel 16 which is matched with the worm is further arranged in the vehicle body, two rear wheels 2 of the vehicle body are connected on the vehicle body through a second rotating shaft in a shaft mode, the worm wheel 16 is fixedly connected on the second rotating shaft and is arranged on the axis of the second rotating shaft, and because the size of the worm wheel 16 is relatively large, a long hole is formed below the worm wheel 16 through the middle layer plate 22, and interference between the worm wheel 16 and the middle layer plate 22 is prevented.
The cutter disc 8 is fixedly connected with the first rotating shaft 11 which is coaxially arranged and extends to the lower part of the middle layer plate 22, the cutter disc 8 is axially arranged below the first rotating shaft 11 and is collinear with the first rotating shaft, three cutters 9 which are uniformly distributed along the circumferential direction of the cutter disc 8 and cut alfalfa stalks are fixedly connected on the upper surface of the cutter disc 8, the cutters 9 are self-sharpening cutters 9, connecting pipes which are collinear with the axial lines of the cutters are fixedly connected on the top surface of the cutter disc 8, pin shafts penetrating through the connecting pipes are inserted on the connecting pipes, the first rotating shaft 11 is inserted into the connecting pipes, two pin holes which are distributed along the height direction are formed in the first rotating shaft 11, the pin shafts are inserted into the pin holes, the depth of the first rotating shaft 11, which is the height of the cutter disc 8, is adjusted, is the height of the cutter disc 8, is higher than the ground, when the pin shafts are inserted into the pin holes located below, the cutter disc 8 is relatively lower than the ground, and accordingly the cutter disc 8 is suitable for cutting heights in different seasons, the heights of alfalfa is 5cm and 8cm, and the distance between the two pin holes is 3cm.
The upper layer plate 6 is also hinged with an upper tensioning wheel 17 which is propped against the third V-shaped belt, the tensioning wheel 17, the fourth belt wheel 4 and the fifth belt wheel 19 are positioned above the upper layer plate 6, and the vehicle body is also fixedly connected with a protective cover 3 with an opening on the bottom surface and covering the tensioning wheel 17, the fourth belt wheel 4 and the fifth belt wheel 19.
The bottom surface of the middle layer plate 22 is also provided with a protection plate 21 positioned at the rear and the side of the cutterhead 8, the distance between the protection plate 21 and the ground is lower than that between the cutting knife 9 and the ground, and the safety of operators is protected.
The first belt pulley 13, the second belt pulley 10, the third belt pulley 15, the worm wheel 16 and the worm are all arranged in the first space, and the upper layer plate 6 is fixedly connected with the handrail 1 which extends upwards and backwards.
When the alfalfa harvester is used, the gasoline engine 5 drives the first belt pulley 13 to rotate, the first belt pulley 13 drives the second belt pulley 10 to rotate through the first V-shaped belt, and the second belt pulley 10 is fixedly connected with the cutterhead 8 through the first rotating shaft 11, so that the cutterhead 8 drives the cutting knife 9 to rotate, and alfalfa mowing is realized; meanwhile, the first belt pulley 13 drives the third belt pulley 15 to rotate through the second V-shaped belt, and drives the worm to rotate through the fourth belt pulley 4 and the fifth belt pulley 19, the worm rotates to drive the worm wheel 16 to rotate, and the worm wheel 16 drives the second rotating shaft to rotate, so that the rotation of the rear wheel 2 is realized, and the rotation of the cutter disc 8 and the movement of the vehicle body are simultaneously realized.
At this time, the tensioning wheel 17 is propped against the third V-shaped belt to tension the third V-shaped belt, and when the vehicle body is not required to move, the tensioning wheel 17 is driven to be far away from the third V-shaped belt, so that the third V-shaped belt is loosened, and the fourth belt pulley 4 cannot drive the fifth belt pulley 19 to rotate, thereby realizing the stop movement of the vehicle body.
According to the utility model, through the arrangement of the driving structure, the cutter head 8 is driven to rotate and the vehicle body is driven to move, the rotation speed and the advancing speed of the cutting machine and the sliding cutting angle of the cutting knife 9 are optimally designed through cutting simulation and field test, the working parameter combination of the cutting machine with minimum cutting damage to alfalfa is determined, the transmission ratio of the cutting machine and the sliding cutting angle of the cutting knife 9 are adjusted, and the low-damage cutting of alfalfa by the small-sized cutting machine is realized; through the arrangement of the self-sharpening cutter 9, the cutter 9 can keep a sharp cutting edge for a long time, and the alfalfa cutting damage is reduced; the tensioning degree of the third V-shaped belt is convenient to adjust through the arrangement of the tensioning wheel 17, when the third V-shaped belt is too loose, the fourth belt pulley 4 cannot drive the fifth belt pulley 19 to rotate, so that the vehicle body stops moving, the space above the vehicle body is fully utilized through the arrangement of the tensioning wheel 17, the fourth belt pulley 4 and the fifth belt pulley 19 above the vehicle body, and meanwhile, the protection effect is achieved through the arrangement of the protection cover 3; the depth of the first rotating shaft 11 inserted into the connecting pipe is adjusted, namely the height of the cutter disc 8 from the ground is adjusted, when the pin shaft is inserted into the pin hole positioned above, the height of the corresponding cutter disc 8 from the ground is higher, when the pin shaft is inserted into the pin hole positioned below, the height of the corresponding cutter disc 8 from the ground is relatively lower, and the height of the cutter disc 8 is adjusted, so that the cutter head is suitable for the alfalfa stubble cutting heights in different seasons
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (8)
1. The utility model provides a alfalfa stalk low damage small-size alfalfa mowing machine, includes automobile body, its characterized in that: still include articulated on the automobile body and be located blade disc (8) of automobile body below, arrange cutting knife (9) of rigid coupling on blade disc (8) cutting alfalfa stalk along circumference to and the drive structure of drive blade disc (8) rotation and automobile body removal simultaneously, the axis of blade disc (8) extends along the direction of height.
2. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 1, wherein: the cutting knife (9) comprises a self-sharpening cutting knife (9).
3. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 1, wherein: the driving structure comprises a first belt pulley (13), a second belt pulley (10), a third belt pulley (15) and a fourth belt pulley (4), wherein the first belt pulley (13) is arranged in parallel with the axis of the cutter disc (8) and is connected onto a vehicle body in a shaft mode, at least two belt pulley grooves which are circumferentially closed are formed in the circumferential surface of the first belt pulley (13), the first belt pulley (13) is connected with the second belt pulley (10) through a first V-shaped belt (12), the second belt pulley (10) is fixedly connected with the cutter disc (8) through a first rotating shaft (11), the first belt pulley (13) is connected with the third belt pulley (15) through a second V-shaped belt (14), the third belt pulley (15) and the fourth belt pulley (4) are coaxially arranged, the fourth belt pulley (4) drives the vehicle body to move through a conversion structure, and a gasoline engine (5) for driving the first belt pulley (13) to rotate is further arranged on the vehicle body.
4. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 3, wherein: the conversion structure comprises a fifth belt wheel (19) connected with the fourth belt wheel (4) through a third V-shaped belt (18), the fifth belt wheel (19) is connected on the vehicle body through a fifth rotating shaft in a shaft mode, a worm which is arranged on the axis of the fifth rotating shaft in a fixed mode is fixedly connected on the fifth rotating shaft, a worm wheel which is matched with the worm is further arranged in the vehicle body, two rear wheels (2) of the vehicle body are connected on the vehicle body through a second rotating shaft in a shaft mode, and the worm wheel is fixedly connected on the second rotating shaft and is arranged on the axis of the second rotating shaft in a shaft mode.
5. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 3, wherein: the automobile body is last still to articulate and to push up take-up pulley (17) on the third V type area, take-up pulley (17), fourth band pulley (4) and fifth band pulley (19) are located the automobile body top, still the rigid coupling has bottom surface opening and cover protection casing (3) of take-up pulley (17), fourth band pulley (4) and fifth band pulley (19) on the automobile body.
6. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 3, wherein: the cutter head is characterized in that a connecting pipe which extends upwards and is used for the first rotating shaft (11) to be inserted is fixedly connected to the top surface of the cutter head (8), two pin holes which are distributed along the height direction are formed in the first rotating shaft (11), and a pin shaft which is inserted into one pin hole is arranged on the connecting pipe.
7. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 1, wherein: the bottom surface of the car body is also provided with a protection plate (21) positioned at the back and the side surface of the cutter head (8), and the distance between the protection plate (21) and the ground is lower than that between the cutting knife (9) and the ground.
8. The alfalfa stalk low damage miniature alfalfa mowing machine of claim 1, wherein: the distance between the front wheel (7) and the rear wheel (2) of the vehicle body is 0.55m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815421.0U CN220191475U (en) | 2023-07-12 | 2023-07-12 | Alfalfa stalk low damage small-size alfalfa mowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815421.0U CN220191475U (en) | 2023-07-12 | 2023-07-12 | Alfalfa stalk low damage small-size alfalfa mowing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220191475U true CN220191475U (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321815421.0U Active CN220191475U (en) | 2023-07-12 | 2023-07-12 | Alfalfa stalk low damage small-size alfalfa mowing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220191475U (en) |
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2023
- 2023-07-12 CN CN202321815421.0U patent/CN220191475U/en active Active
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