CN215935520U - Land leveler suitable for sweet potato seedling planting - Google Patents
Land leveler suitable for sweet potato seedling planting Download PDFInfo
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- CN215935520U CN215935520U CN202121946423.4U CN202121946423U CN215935520U CN 215935520 U CN215935520 U CN 215935520U CN 202121946423 U CN202121946423 U CN 202121946423U CN 215935520 U CN215935520 U CN 215935520U
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Abstract
The utility model discloses a land leveler suitable for sweet potato seedling planting, which belongs to the field of agricultural machinery and comprises a door-shaped frame and a pressing plate; the clamp plate is the arc that is tile shape, and clamp plate wherein one end AND gate type frame butt joint, and the curve shape of this end of clamp plate is the same with the curve shape of gate type frame, the butt joint does: the end of the pressing plate is aligned with the door-shaped frame; the leg frame is fixed on each end of the door-shaped frame, a combined body formed by the leg frame and the door-shaped frame is U-shaped, the bottom of each leg frame is fixed with a roller, and the rollers are located at the opening position of the combined body. The curvature of one end of the pressing plate is larger than that of the other end of the pressing plate, and the end with the smaller curvature of the pressing plate is in butt joint with the door-shaped frame. The flat whole that this scheme of adoption provided can carry out the compaction to the ridge that is used for planting the sweet potato, is favorable to the maintenance of ridge shape and the survival of sweet potato seedling.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, in particular to a land leveler suitable for planting sweet potato seedlings.
Background
The sweet potatoes are planted in large area in China, and the main distribution areas comprise Beijing, Shanxi, Shandong, Henan, Tianjin, Hebei, Dongsanzhou, inner Mongolia, Yunnan, Sichuan, Hubei, Gansu, Anhui, Fujian, Shaanxi, Hunan, Guangdong, Jiangsu, Jiangxi, Hainan and the like.
The sweet potatoes are large in market demand, and have the characteristics of easiness in storage, high yield, easiness in planting, simplicity in field management, various varieties and the like, so that the sweet potatoes are very important crops in various places in China.
With the further development of modern agriculture, the planting of sweet potato seedlings in sweet potato planting fields has realized mechanized planting: according to the characteristics that the sweet potatoes are planted in furrows and can realize high yield and convenient soil preparation, when the sweet potatoes are planted mechanically, firstly, soil preparation machinery is used for turning over the soil and forming ridges, and then planting machinery is used for digging holes and planting sweet potato seedlings into the holes.
The soil preparation machine for planting the sweet potato seedlings is further structurally optimized, so that the soil preparation machine can perform more beneficial trimming work on the soil, and the positive promotion significance is undoubtedly realized on the further development of modern agriculture.
SUMMERY OF THE UTILITY MODEL
The utility model provides a land leveler suitable for planting sweet potato seedlings, which aims at the technical problem that the land preparation machine for planting the sweet potato seedlings is further structurally optimized, so that the land leveler can perform more beneficial finishing work on the land and has positive promoting significance on the further development of modern agriculture. The flat whole that this scheme of adoption provided can carry out the compaction to the ridge that is used for planting the sweet potato, is favorable to the maintenance of ridge shape and the survival of sweet potato seedling.
Aiming at the problems, the land leveler suitable for planting sweet potato seedlings provided by the utility model solves the problems through the following technical key points: a land leveler suitable for sweet potato seedling planting comprises a door-shaped frame and a pressing plate;
the clamp plate is the arc that is tile shape, and clamp plate wherein one end AND gate type frame butt joint, and the curve shape of this end of clamp plate is the same with the curve shape of gate type frame, the butt joint does: the end of the pressing plate is aligned with the door-shaped frame;
the leg frame is fixed on each end of the door-shaped frame, a combined body formed by the leg frame and the door-shaped frame is U-shaped, the bottom of each leg frame is fixed with a roller, and the rollers are located at the opening position of the combined body.
The curvature of one end of the pressing plate is larger than that of the other end of the pressing plate, and the end with the smaller curvature of the pressing plate is in butt joint with the door-shaped frame.
In the prior art, after ridge forming for planting sweet potatoes is completed by adopting a mechanized or traditional plow harrow, soil on ridges is relatively loose, and the soil on the ridges is easy to collapse into furrows when rainfall or watering occurs; after the sweet potato seedlings are planted, the air permeability of the soil on the ridges is too strong due to the fact that the empty deficiency rate among the soil is too large, and the survival rate of the sweet potato seedlings is not facilitated.
In order to solve the problems, the scheme provides a land leveler for leveling and compacting ridges.
Specifically, the combination body formed by the door-shaped frame and the leg frames is used as the frame body of the device, and meanwhile, the rollers are arranged on the bottom sides of the leg frames, so that when the device is used, the roller is as follows: the support body spanes ridge, assembly place side for front side, clamp plate ride in during the ridge top, when power equipment is pulling this device and is advancing down, because the effect of gravity, the rear side of clamp plate can rotate around the wheel center of gyro wheel just the motion mode of rear side is upset downwards, so the rear of clamp plate can overturn downwards and press and hold on the ridge, along with the advancing of this device, because the clamp plate front side is higher for the rear side, so outstanding earth on the ridge also can enter into the clamp plate below by the front end of clamp plate, along with the reduction of the inboard height in clamp plate rear, under the constraint of the inboard to the ridge side of gravity and clamp plate of clamp plate, can realize: not only can the shape of regular ridge, have certain earth compacting effect to the surface of ridge simultaneously, reach and level the ridge and compress tightly the purpose of earth on the ridge, finally do benefit to the gas permeability that prevents collapsing and reduce the ridge that promotes the ridge.
As one skilled in the art can appreciate, the ridge may be shaped to mimic the shape of the front end of the platen during molding, or the front end of the platen may be shaped to match the shape of the existing ridge. Because the rear end of clamp plate can overturn under gravity and realize that the ridge is leveled and the compaction, so the both ends of clamp plate set up to the shape and the unanimous purpose that can realize this scheme of setting for the size. Preferably, for better flattening and compacting effect, the following settings are provided: the front end and the rear end of the pressing plate are consistent in shape, but the size of the rear end of the pressing plate is reduced in proportion on the basis of the size of the front end, so that the following effects can be achieved: in the advancing process of the pressing plate, the inner ridges move along with the pressing plate, and soil at all positions of the top surface and the side surfaces can be gradually compacted.
Preferably:
in the current sweet potato planting field, because probably there is crops intercropping between the ridge, like planting maize, beans, so when the clamp plate spanes a ridge, the gyro wheel support on its one side leg frame can support in the furrow, and the gyro wheel on the opposite side leg frame can support on the level land that is used for intercropping other crops, like this, will cause two gyro wheels different height to support, based on above planting field characteristics, for the suitability that improves this leveler, set up to: at least one of the legs is adjustable in length. By adopting the scheme, the height of the leg frame on different sides of the door-shaped frame can be adjusted according to specific terrain so as to adapt to the flat and straight support of the pressing plate.
In order to improve the passing ability of the grader and improve the compaction ability of the pressure plate in the vibration process of the elastic part, the method comprises the following steps: the leg frame is provided with an elastic part capable of generating elastic deformation, and the elastic part can generate elastic deformation for changing the height of the leg frame.
When realizing door type frame elastic support, can adopt: the leg frame comprises a first seat body and a second seat body;
the door-shaped frame is fixed on the first seat body, and the rollers are arranged on the second seat body;
the elastic element is a spring arranged between the first seat body and the second seat body, and the first seat body is supported on the second seat body through the spring.
In order to avoid unnecessary lateral shaking of the pressing plate during the advancing process, the following steps can be adopted: the leg frame also comprises an inserted rod, one end of the inserted rod is interacted with the first seat body, and the other end of the inserted rod is interacted with the second seat body;
when the spring is elastically deformed, the inserted link is used as a guide link between the first seat body and the second seat body: the first base is constrained from moving along the axis of the inserted link.
In summary, for the above leg frame including the spring and the insertion rod, as an adjustable scheme of the height of the leg frame, the following steps are adopted: jacks are arranged on the first seat body and the second seat body;
the bottom side of the inserted link is inserted into the jack of the second seat body, the top side of the inserted link is inserted into the jack of the first seat body, and the length of the inserted link inserted into the rod section of the first seat body is less than that of the jack on the first seat body;
the spring is a spiral spring sleeved on the inserted rod. Above scheme, in the part of constituteing the leg, the part that includes is first pedestal, inserted bar, spring and second pedestal respectively, adopts the mode of pegging graft and sets up the spring into to support the back to first pedestal, and the equipment leg does not need other extra coupling mechanism, like this, when the support height of needs adjustment to first pedestal in order to adjust the height of door type frame unilateral leg, only need take out the bottom side or the top side of inserted bar from corresponding pedestal, cup joint on the inserted bar again and can be as the lantern ring of support piece between spring and the corresponding pedestal. Specifically, the method comprises the following steps:
the sleeve ring can be sleeved on the inserted rod;
the size of the lantern ring satisfies: the lantern ring is positioned between the spring and the first seat body or between the spring and the second seat body; under the restriction of the side surface of the inserted link, one end of the lantern ring is butted with one end of the spring; when the lantern ring is positioned between the spring and the first seat body, the other end of the lantern ring is in butt joint with the first seat body; when the lantern ring is located between the spring and the second seat body, the other end of the lantern ring is in butt joint with the second seat body. This scheme of adoption, whether the lantern ring is adopted through the lantern ring of changing different length or the selection, can reach the purpose of adjusting the leg frame height.
As introduced above, this scheme needs to pass through gravity at the during operation for the clamp plate possesses the effect of leveling and compaction ridge, can adjust through the counter weight as one kind according to like soil particle size, humidity leveling and the technical scheme of compaction effect adopt: the device also comprises a groove body, one end of the groove body is supported on the door-shaped frame, and the other end of the groove body is supported on the pressing plate;
the notch of the groove body faces upwards. When the pressure plate is used specifically, the balance weight above the pressure plate can be changed by loading soil blocks, stones and the like into the groove body.
As a technical scheme for changing the leveling and ridge compacting capabilities of a pressing plate through mechanical force, the method comprises the following steps: the vibration motor is arranged at the free end of the pressure plate.
The utility model has the following beneficial effects:
the scheme provides a land leveler for ridge leveling and compaction.
Specifically, the combination body formed by the door-shaped frame and the leg frames is used as the frame body of the device, and meanwhile, the rollers are arranged on the bottom sides of the leg frames, so that when the device is used, the roller is as follows: the support body spanes ridge, assembly place side for front side, clamp plate ride in during the ridge top, when power equipment is pulling this device and is advancing down, because the effect of gravity, the rear side of clamp plate can rotate around the wheel center of gyro wheel just the motion mode of rear side is upset downwards, so the rear of clamp plate can overturn downwards and press and hold on the ridge, along with the advancing of this device, because the clamp plate front side is higher for the rear side, so outstanding earth on the ridge also can enter into the clamp plate below by the front end of clamp plate, along with the reduction of the inboard height in clamp plate rear, under the constraint of the inboard to the ridge side of gravity and clamp plate of clamp plate, can realize: not only can the shape of regular ridge, have certain earth compacting effect to the surface of ridge simultaneously, reach and level the ridge and compress tightly the purpose of earth on the ridge, finally do benefit to the gas permeability that prevents collapsing and reduce the ridge that promotes the ridge.
Drawings
Fig. 1 is a structural diagram of a specific embodiment of a land leveler suitable for sweet potato seedling planting according to the scheme, and the structural diagram is a front view;
FIG. 2 is a block diagram of one embodiment of a grader suitable for sweet potato seedling planting according to the present disclosure, the block diagram being a side view with the visual position at the front side;
FIG. 3 is a structural diagram of one embodiment of a grader suitable for sweet potato seedling planting according to the present disclosure, the structural diagram being a cross-sectional view of a leg frame;
FIG. 4 is a block diagram of one embodiment of a grader suitable for sweet potato seedling planting according to the present disclosure, the block diagram being a side view with the visual position on the front side, the embodiment including a vibration motor;
FIG. 5 is a structural diagram of one embodiment of a grader suitable for sweet potato seedling planting according to the present disclosure, the structural diagram is a structural diagram of a pressing plate, and the visual position is located on a side surface of the front side of the pressing plate;
fig. 6 is a structural diagram of a concrete embodiment of a land leveler suitable for sweet potato seedling planting according to the present scheme, the structural diagram is a structural diagram of a pressing plate, and the visual position is located right in front of the pressing plate.
The reference numbers in the drawings are respectively: 1. leg frame, 11, first pedestal, 12, second pedestal, 2, door type frame, 3, gyro wheel, 4, spring, 5, inserted bar, 6, clamp plate, 7, cell body, 8, vibrating motor.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1 to 6, a land leveler suitable for sweet potato seedling planting comprises a door-shaped frame 2 and a pressing plate 6;
the clamp plate 6 is the arc that is tile shape, and 6 wherein one end docks with door type frame 2 of clamp plate, and the curve shape of 6 this ends of clamp plate is the same with the curve shape of door type frame 2, the butt joint does: the end of the pressing plate 6 is aligned with the door-shaped frame 2;
the leg frame 1 is fixed on each end of the door-shaped frame 2, a combined body formed by the leg frame 1 and the door-shaped frame 2 is U-shaped, the bottom of each leg frame 1 is fixed with a roller 3, and the rollers 3 are located at the opening positions of the combined body.
The curvature of one end of the pressing plate 6 is larger than that of the other end of the pressing plate, and the end with the smaller curvature of the pressing plate 6 is in butt joint with the door type frame 2.
In the prior art, after ridge forming for planting sweet potatoes is completed by adopting a mechanized or traditional plow harrow, soil on ridges is relatively loose, and the soil on the ridges is easy to collapse into furrows when rainfall or watering occurs; after the sweet potato seedlings are planted, the air permeability of the soil on the ridges is too strong due to the fact that the empty deficiency rate among the soil is too large, and the survival rate of the sweet potato seedlings is not facilitated.
In order to solve the problems, the scheme provides a land leveler for leveling and compacting ridges.
Specifically, the combination body formed by the door frame 2 and the legs 1 is used as the frame body of the device, and meanwhile, by arranging the rollers 3 at the bottom side of each leg 1, when the device is used, the following steps are performed: the support body spanes ridge, assembly place side are front side, clamp plate 6 ride in during the ridge top, when power equipment is pulling this device and is advancing down, because the effect of gravity, the rear side of clamp plate 6 can rotate around the wheel center of gyro wheel 3 just the motion mode of rear side is upset downwards, so the rear of clamp plate 6 can overturn downwards and press and hold on the ridge, along with the advancing of this device, because the clamp plate 6 front side is higher for the rear side, so outstanding earth on the ridge also can enter into clamp plate 6 below by the front end of clamp plate 6, along with the reduction of the inboard height in clamp plate 6 rear, under the constraint of the inboard to the ridge side of gravity of clamp plate 6 and clamp plate 6, can realize: not only can the shape of regular ridge, have certain earth compacting effect to the surface of ridge simultaneously, reach and level the ridge and compress tightly the purpose of earth on the ridge, finally do benefit to the gas permeability that prevents collapsing and reduce the ridge that promotes the ridge.
As a person skilled in the art, in the above conception, the shape of the ridge may be a shape imitating the shape of the front end of the platen 6 when the ridge is formed, or the shape of the front end of the platen 6 may be made to fit the shape of the existing ridge. Because the rear end of clamp plate 6 can overturn under gravity and realize that the ridge is leveled and the compaction, so the both ends of clamp plate 6 set up to the shape and the unanimous purpose that can realize this scheme of setting for the size. Preferably, for better flattening and compacting effect, the following settings are provided: the front end and the rear end of the pressure plate 6 are consistent in shape, but the size of the rear end of the pressure plate 6 is reduced in proportion to the size of the front end, so that the following effects can be achieved: during the advancing process of the pressing plate 6, the inner ridge moves along with the pressing plate 6, and soil at each position of the top surface and the side surface can be gradually compacted.
Preferably:
in the current sweet potato planting field, because probably there is crops intercropping between the ridge, like planting maize, beans, so if clamp plate 6 spanned a ridge, 3 supports of gyro wheel on its one side leg 1 can support in the furrow, and 3 supports of gyro wheel on the opposite side leg 1 can support on the level land that is used for intercropping other crops, like this, will cause the different height of two gyro wheels to support, based on above planting field characteristics, for the suitability that improves this leveler, set up to: at least one leg 1 is adjustable in length. By adopting the scheme, the height of the leg frame 1 on different sides of the door-shaped frame 2 can be adjusted according to specific terrain so as to adapt to the flat support of the pressing plate 6.
In order to improve the passing ability of the grader and improve the compaction ability of the pressure plate 6 in the vibration process of the elastic part, the method comprises the following steps: the leg frame 1 is provided with an elastic member capable of generating elastic deformation, and the elastic member can generate elastic deformation for changing the height of the leg frame 1.
When realizing door type frame 2 elastic support, can adopt: the leg frame 1 comprises a first seat body 11 and a second seat body 12;
the door-shaped frame 2 is fixed on the first seat body 11, and the rollers 3 are arranged on the second seat body 12;
the elastic element is a spring 4 disposed between the first seat 11 and the second seat 12, and the first seat 11 is supported on the second seat 12 through the spring 4.
In order to avoid unnecessary lateral play of the platen 6 during advancement, the following can be used: the leg frame 1 also comprises an insert rod 5, one end of which is acted with the first seat body 11, and the other end of which is acted with the second seat body 12;
when the spring 4 is elastically deformed, the insertion rod 5 acts as a guide rod between the first seat 11 and the second seat 12: the first fastening body 11 is constrained to move along the axis of the insert rod 5.
In summary, for the above leg 1 including the spring 4 and the insertion rod 5, as a scheme for adjusting the height of the leg 1, the following steps are adopted: the first seat body 11 and the second seat body 12 are both provided with jacks;
the bottom side of the inserted link 5 is inserted into the jack of the second seat 12, the top side of the inserted link 5 is inserted into the jack of the first seat 11, and the length of the link section of the inserted link 5 inserted into the first seat 11 is less than the length of the jack on the first seat 11;
the spring 4 is a spiral spring sleeved on the inserted rod 5. According to the scheme, the parts forming the leg frame 1 comprise the first base body 11, the inserted link 5, the spring 4 and the second base body 12, the inserted link is adopted, the spring 4 is arranged to support the first base body 11, and other additional connecting mechanisms are not needed for assembling the leg frame 1, so that when the supporting height of the first base body 11 is required to be adjusted to adjust the height of the leg frame 1 on one side of the door-shaped frame 2, only the bottom side or the top side of the inserted link 5 needs to be drawn out from the corresponding base body, and then the inserted link 5 is sleeved with a lantern ring serving as a supporting piece between the spring 4 and the corresponding base body. Specifically, the method comprises the following steps:
the sleeve ring can be sleeved on the inserted rod 5;
the size of the lantern ring satisfies: the lantern ring is positioned between the spring 4 and the first seat body 11 or between the spring 4 and the second seat body 12; under the restriction of the side surface of the inserted link 5, one end of the lantern ring is butted with one end of the spring 4; when the lantern ring is positioned between the spring 4 and the first seat body 11, the other end of the lantern ring is in butt joint with the first seat body 11; when the lantern ring is located between the spring 4 and the second seat 12, the other end of the lantern ring is butted with the second seat 12. This scheme of adoption, through the lantern ring of changing different length or whether select to adopt the lantern ring, can reach the purpose of adjusting 1 height of leg frame.
As introduced above, this scheme needs to pass through gravity at the during operation for clamp plate 6 possesses the effect of leveling and compaction ridge, can adjust through the counter weight as one kind according to like soil particle size, humidity leveling and the technical scheme of compaction effect adopt: the device also comprises a groove body 7, one end of which is supported on the door-shaped frame 2, and the other end of which is supported on the pressing plate 6;
the notch of the groove body 7 faces upwards. When the device is used specifically, the balance weight above the pressing plate 6 can be changed by loading soil blocks, stones and the like into the groove body 7.
As a technical scheme for changing the leveling and ridge compacting capacity of the pressing plate 6 through mechanical force, the method comprises the following steps: and a vibration motor 8 arranged at the free end of the pressure plate 6.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the utility model pertains, other embodiments that do not depart from the gist of the utility model are intended to be within the scope of the utility model.
Claims (10)
1. A land leveler suitable for sweet potato seedling planting is characterized by comprising a door-shaped frame (2) and a pressing plate (6);
the clamp plate (6) is the arc that is tile shape, and clamp plate (6) wherein one end and door type frame (2) dock, and the curve shape of this end of clamp plate (6) is the same with the curve shape of door type frame (2), the butt joint is: the end of the pressure plate (6) is aligned with the door-shaped frame (2);
the leg frame (1) is fixed at each end of the door-shaped frame (2), a combined body formed by the leg frame (1) and the door-shaped frame (2) is U-shaped, the bottom of each leg frame (1) is fixed with a roller (3), and the rollers (3) are located at the opening positions of the combined body.
2. The land leveler applicable to sweet potato seedling planting of claim 1, wherein the curvature of one end of the pressing plate (6) is larger than that of the other end, and the end with the smaller curvature of the pressing plate (6) is butted with the gate frame (2).
3. The land leveler applicable to sweet potato seedling planting of claim 1, wherein at least one leg frame (1) has an adjustable length.
4. The land leveler applicable to sweet potato seedling planting of claim 1, wherein the leg frame (1) is provided with an elastic member capable of generating elastic deformation, and the elastic member is capable of generating elastic deformation for changing the height of the leg frame (1).
5. The land leveler applicable to sweet potato seedling planting of claim 4, wherein the leg frame (1) comprises a first seat body (11) and a second seat body (12);
the door-shaped frame (2) is fixed on the first seat body (11), and the rollers (3) are arranged on the second seat body (12);
the elastic piece is a spring (4) arranged between the first seat body (11) and the second seat body (12), and the first seat body (11) is supported on the second seat body (12) through the spring (4).
6. The land leveler applicable to sweet potato seedling planting of claim 5, wherein the leg frame (1) further comprises an insert rod (5) having one end interacting with the first seat body (11) and the other end interacting with the second seat body (12);
when the spring (4) is elastically deformed, the inserted rod (5) is used as a guide rod between the first seat body (11) and the second seat body (12): the first seat body (11) is restrained from moving along the axis of the inserted link (5).
7. The land leveler applicable to sweet potato seedling planting of claim 6, wherein the first seat body (11) and the second seat body (12) are provided with insertion holes;
the bottom side of the inserted link (5) is inserted into the jack of the second seat body (12), the top side of the inserted link (5) is inserted into the jack of the first seat body (11), and the length of the link section of the inserted link (5) inserted into the first seat body (11) is less than that of the jack on the first seat body (11);
the spring (4) is a spiral spring sleeved on the inserted rod (5).
8. The land leveler applicable to sweet potato seedling planting of claim 7, further comprising a lantern ring capable of being sleeved on the inserted link (5);
the size of the lantern ring satisfies: the lantern ring is positioned between the spring (4) and the first seat body (11) or between the spring (4) and the second seat body (12); under the restriction of the side surface of the inserted link (5), one end of the lantern ring is butted with one end of the spring (4); when the lantern ring is positioned between the spring (4) and the first seat body (11), the other end of the lantern ring is butted with the first seat body (11); when the lantern ring is positioned between the spring (4) and the second seat body (12), the other end of the lantern ring is in butt joint with the second seat body (12).
9. The land leveler applicable to sweet potato seedling planting of claim 1, further comprising a tank body (7) having one end supported on the gate frame (2) and the other end supported on the pressing plate (6);
the notch of the groove body (7) faces upwards.
10. The land leveler applicable to sweet potato seedling planting of claim 1, further comprising a vibration motor (8) installed at the free end of the pressing plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946423.4U CN215935520U (en) | 2021-08-19 | 2021-08-19 | Land leveler suitable for sweet potato seedling planting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946423.4U CN215935520U (en) | 2021-08-19 | 2021-08-19 | Land leveler suitable for sweet potato seedling planting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215935520U true CN215935520U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121946423.4U Active CN215935520U (en) | 2021-08-19 | 2021-08-19 | Land leveler suitable for sweet potato seedling planting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215935520U (en) |
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2021
- 2021-08-19 CN CN202121946423.4U patent/CN215935520U/en active Active
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