Stevia rebaudiana seeding machine
By integrating rotary tillage, ridging, and sowing, the stevia planter solves the problems of low germination rate caused by small stevia seeds and excessive soil covering, achieving efficient and reliable mechanized sowing and improving the efficiency and yield of stevia planting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-31
AI Technical Summary
Stevia seeds are small and have strong hypocotyl growth. Covering the seeds with too much soil during sowing affects the germination rate, leading to problems such as high labor intensity, low efficiency and high cost in manual planting.
A stevia planter integrating rotary tillage, ridging, and sowing was designed, including a rotary tillage component, a ridging component, and a sowing component. The rotary tillage blade breaks up soil compaction, the ridging component forms neat furrows, and the sowing component enables uniform seed dispersal.
It improves the overall operational efficiency of stevia cultivation, reduces labor input, increases sowing quality and crop yield, and provides an efficient and reliable mechanized solution.
Smart Images

Figure CN224054819U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of seeding machine especially relates to a stevia rebaudiana bertoni seeding machine. BACKGROUND
[0002] Stevia rebaudiana bertoni is a perennial herbaceous plant of the asteraceae family, which is originally from Brazil, Paraguay and Argentina. Its leaves contain a sweet substance called stevioside, which is 300 times sweeter than sucrose. Its heat is only one-third of sucrose. It is a natural sweetener with low heat and high sweetness, which is widely used in food and pharmaceutical industries. In the process of planting stevia rebaudiana bertoni, seed propagation is a common production method, which usually adopts the method of seeding seedlings and then transplanting and planting. However, the stevia rebaudiana bertoni seed is small, the embryo axis has strong growth force, and the young bud has poor topsoil ability. If the soil is too thick during seeding, it will seriously affect the emergence rate. At present, the planting of stevia rebaudiana bertoni is mostly artificial, which has the problems of high labor intensity, low efficiency and high cost.
[0003] Therefore, it is necessary to provide a new stevia rebaudiana bertoni seeding machine to solve the above technical problems. CONTENT OF THE UTILITY MODEL
[0004] In order to overcome the defects existing in the prior art, a stevia rebaudiana bertoni seeding machine is provided to solve the above problems.
[0005] The stevia rebaudiana bertoni seeding machine provided by the utility model comprises a rack, a rotary tillage assembly and a ridging assembly arranged at the bottom of the rack, and a seeding assembly arranged at the top of the rack. The rotary tillage assembly is located on the side away from the ridging assembly, and a rotary tillage piece is arranged in the rotary tillage assembly, and the soil can be rotary tilled by the rotary tillage piece. A speed reducer is installed above the rotary tillage assembly at the top of the rack, and the output shaft of the speed reducer is connected with a gearbox, and the gearbox is located below the rack.
[0006] Preferably, the rotary tillage assembly comprises rotary tillage shafts rotatably connected to both sides of the bottom of the rack, the output end of the gearbox is connected to the side close to the rotary tillage shafts, a plurality of rotary tillage knives are equidistantly connected to the outer sides of the rotary tillage shafts along the rotary axis, rotary tillage cover plates are installed above the rotary tillage shafts of the rack, and the rotary tillage cover plates are located on both sides of the speed reducer.
[0007] Preferably, the ridging assembly comprises a hexagonal shaft rotatably connected to one side of the bottom of the rack, and the hexagonal shaft is located on the side away from the rotary tillage shafts. A pressure groove shaft is connected to the outer side of the hexagonal shaft, a plurality of equidistantly distributed pressure groove wheels are connected to the outer side of the pressure groove shaft, and ridging wheels are connected to both ends of the outer side of the pressure groove shaft.
[0008] Preferably, the seeding assembly comprises a plurality of equidistantly distributed seed boxes mounted on the top of the frame, and the seed boxes are located on one side above the hexagonal shaft, and the bottom of each seed box is connected with a seeding pipe.
[0009] Preferably, the input shaft of the speed reducer is connected with a driving sprocket one, a chain sprocket reducer is mounted on one side of the top of the frame, the input shaft of the chain sprocket reducer is connected with a driving sprocket two, the outer sides of the driving sprocket one and the driving sprocket two are connected through a driving chain, the output end of the chain sprocket reducer is connected with a transmission sprocket one, a transmission shaft is mounted on one side of the center of the top of the frame, the outer side of the transmission shaft is connected with a transmission sprocket two, the outer sides of the transmission sprocket one and the transmission sprocket two are connected through a transmission chain, one end of the transmission shaft close to the transmission sprocket two is connected with a driven sprocket one, one end of the hexagonal shaft is connected with a driven sprocket two, the outer sides of the driven sprocket one and the driven sprocket two are connected through a driven sprocket.
[0010] Preferably, the bottom of the frame is mounted with a ridging frame, and the ridging frame is located between the rotary tillage assembly and the ridging assembly.
[0011] Compared with the related art, the sweet stevia seed drill has the following beneficial effects:
[0012] The sweet stevia seed drill integrates the key operation links such as rotary tillage, ridging and seeding, significantly improves the overall operation efficiency, the rotary tillage assembly utilizes the power accurately controlled by the gearbox to drive the rotary tillage knife on the rotary tillage shaft to efficiently till the soil, breaks the soil hardening, and improves the air permeability and water retention. Then, the hexagonal shaft of the ridging assembly receives the power transmitted by the speed reducer, the chain sprocket reducer and the transmission shaft, drives the press groove wheel and the ridging wheel to work cooperatively, and quickly forms the neat ridge ditch. Finally, the seeding assembly ensures the seeds to be uniformly scattered into the ridge ditch through the plurality of equidistantly distributed seed boxes and seeding pipes, not only reduces the labor input and operation time, but also improves the seeding quality and crop yield through the accurate power control and component cooperation, and provides an efficient and reliable mechanized solution for sweet stevia planting. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The structure schematic view of a preferred embodiment of the sweet stevia seed drill provided by the utility model;
[0014] Figure 2 The structure schematic view of the rotary tillage assembly shown in the figure; Figure 1
[0015] Figure 3 The structure schematic view of the ridging assembly shown in the figure. Figure 1
[0016] The figure mark: 1, frame; 11, speed reducer; 12, gearbox; 13, chain wheel speed reducer; 2, rotary tiller shaft; 21, rotary tiller; 22, rotary tiller cover plate; 3, hexagonal shaft; 31, press groove wheel shaft; 32, press groove wheel; 33, ridging wheel; 4, seeding box; 41, seeding tube; 5, drive chain wheel one; 51, drive chain wheel two; 52, transmission chain wheel one; 53, transmission shaft; 54, transmission chain wheel two; 55, driven chain wheel one; 56, driven chain wheel two; 6, ridging frame. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0018] The specific implementation of the utility model is described in detail below in combination with specific examples.
[0019] The utility model discloses a kind of sweet stevia seeders, sweet stevia seeder includes: frame 1;Rotary tiller assembly and ridging assembly are arranged at the bottom of frame 1, and;Seeding assembly is set at the top of frame 1;Wherein, rotary tiller assembly is located at the side away from ridging assembly, and rotary tiller assembly is provided with rotary tiller, and rotary tiller can be used to rotary tiller to soil;The top of frame 1 is installed with speed reducer 11 above rotary tiller assembly, and the output shaft of speed reducer 11 is connected with gearbox 12, and gearbox 12 is located below frame 1.
[0020] It should be noted that: frame 1 is the main structure of the whole seeder, for supporting and connecting other components.Rotary tiller assembly is located at the bottom of frame 1, and at the side away from ridging assembly, internally provided with rotary tiller, and rotary tiller is used to rotary tiller to soil, for seeding, ridging assembly is also located at the bottom of frame 1, for forming ridge ditch on the soil after rotary tiller, facilitate seeding and subsequent field management.Seeding assembly is set at the top of frame 1, responsible for uniformly spreading sweet stevia seeds into ridge ditch.Speed reducer 11 is driven by motor and installed at the top of frame 1, located above rotary tiller assembly, reduces the speed of motor or other power source, increases torque, to adapt to the working requirement of rotary tiller assembly.Gearbox 12 is connected on the output shaft of speed reducer 11, and located below frame 1, further adjusts the speed and torque of rotary tiller assembly, to meet different soil conditions and rotary tiller requirements.Power source transmits power to speed reducer 11, speed reducer 11 reduces speed and increases torque, and then transmits power to gearbox 12, gearbox 12 further adjusts speed and torque as required, and then transmits power to rotary tiller assembly.Rotary tiller in rotary tiller assembly rotates under the drive of power, and rotary tiller to soil, break soil hardening, improve soil aeration and water retention.
[0021] In the embodiment of the utility model, the rotary tillage assembly includes rotary tillage shafts 2 rotatably connected to the two sides of the bottom of the frame 1, the opposite sides of the two rotary tillage shafts 2 are connected to the output end of the gearbox 12, and the outer sides of the two rotary tillage shafts 2 are equidistantly connected to a plurality of rotary tillage knives 21 in the direction along the rotation axis, the rotary tillage machine cover plates 22 are installed above the two rotary tillage shafts 2 of the frame 1, and the rotary tillage machine cover plates 22 are located on the two sides of the speed reducer 11, the ridge forming frame 6 is installed at the bottom of the frame 1 and located between the rotary tillage assembly and the ridge forming assembly.
[0022] It should be noted that the rotary tillage shafts 2 are two, rotatably connected to the two sides of the bottom of the frame 1, the opposite sides of the two rotary tillage shafts 2 are connected to the output end of the gearbox 12, which means that the gearbox 12 transmits power to the two rotary tillage shafts 2 through the output shaft, so that they rotate synchronously. On the outer side of each rotary tillage shaft 2, a plurality of rotary tillage knives 21 are equidistantly connected in the direction along the rotation axis, the rotary tillage knives 21 rotate under the drive of the rotary tillage shaft, cut and turn the soil, and realize rotary tillage operation. The rotary tillage machine cover plates 22 are installed on the frame 1 and located above the two rotary tillage shafts 2, and the rotary tillage machine cover plates 22 are also located on the two sides of the speed reducer 11, preventing soil and sundries from splashing, the ridge forming frame 6 is installed at the bottom of the frame 1 and located between the rotary tillage assembly and the ridge forming assembly, ensuring that it forms a neat ridge ditch on the soil after rotary tillage.
[0023] In the embodiment of the utility model, the ridge forming assembly includes a hexagonal shaft 3 rotatably connected to one side of the bottom of the frame 1, and the hexagonal shaft 3 is located away from the rotary tillage shaft 2, the outer side of the hexagonal shaft 3 is connected to a pressure groove wheel shaft 31, the outer side of the pressure groove wheel shaft 31 is connected to a plurality of equidistantly distributed pressure groove wheels 32, and the outer sides of the pressure groove wheel shaft 31 are connected to ridge forming wheels 33 at both ends.
[0024] It should be noted that the hexagonal shaft 3 is rotatably connected to one side of the bottom of the frame 1 and located away from the rotary tillage shaft 2, the hexagonal shaft 3 serves as a power transmission shaft of the ridge forming assembly and transmits power to other components. The pressure groove wheel shaft 31 is connected to the outer side of the hexagonal shaft 3, a plurality of pressure groove wheels 32 are equidistantly distributed on the outer side of the pressure groove wheel shaft 31, the pressure groove wheels 32 press grooves on the surface of the soil to prepare for subsequent ridge forming operation. The outer sides of the pressure groove wheel shaft 31 are connected to the ridge forming wheels 33 at both ends, and the ridge forming wheels 33 push the soil on both sides of the groove pressed by the pressure groove wheels to form a ridge ditch.
[0025] In the embodiment of the utility model, the seeding assembly includes a plurality of equidistantly distributed seeding boxes 4 installed on the top of the frame 1, and the seeding boxes 4 are located on one side above the hexagonal shaft 3, and the bottom of each seeding box 4 is connected to a seeding pipe 41.
[0026] It should be noted that: a plurality of seed boxes 4 are equidistantly distributed on the top of the frame 1, on one side above the hexagonal shaft 3, the seed boxes 4 are used to store sweet leaf chrysanthemum seeds, and ensure that there is enough seed supply during the sowing process. The bottom of each seed box 4 is connected with a seeding pipe 41, and the seeding pipe 41 is used to guide the seeds in the seed box 4 into the soil to realize the seeding operation. When the seeder travels, the seeding pipe 41 uniformly spreads the seeds in the seed box 4 into the furrow formed by the ridging assembly, and through the equidistant distribution of the plurality of seed boxes 4 and the seeding pipe 41, the uniform sowing of the seeds can be realized, and the sowing quality is improved.
[0027] In the embodiment of the utility model, the input shaft of the speed reducer 11 is connected with the driving sprocket one 5, the top of the frame 1 is installed with the sprocket speed reducer 13 on one side of the speed reducer 11, the input shaft of the sprocket speed reducer 13 is connected with the driving sprocket two 51, the outside of the driving sprocket one 5 and the driving sprocket two 51 is driven chain transmission connection, the output end of the sprocket speed reducer 13 is connected with the transmission sprocket one 52, the top center side of the frame 1 is installed with the transmission shaft 53, the outside of the transmission shaft 53 is connected with the transmission sprocket two 54, the outside of the transmission sprocket one 52 and the transmission sprocket two 54 is driven chain transmission connection, the end close to the transmission sprocket two 54 of the transmission shaft 53 is connected with the driven sprocket one 55, one end of the hexagonal shaft 3 is connected with the driven sprocket two 56, the outside of the driven sprocket one 55 and the driven sprocket two 56 is driven sprocket transmission connection.
[0028] It should be noted that: the driving sprocket one 5 is connected on the input shaft of the speed reducer 11, the driving sprocket two 51 is connected on the input shaft of the sprocket speed reducer 13, the driving sprocket one 5 and the driving sprocket two 51 are driven chain transmission connection, power is transmitted from the speed reducer 11 to the sprocket speed reducer 13. The output end of the sprocket speed reducer 13 is connected with the transmission sprocket one 52. The transmission shaft 53 is installed on the top center side of the frame 1, and the outside thereof is connected with the transmission sprocket two 54. The transmission sprocket one 52 and the transmission sprocket two 54 are driven chain transmission connection, and power is transmitted from the sprocket speed reducer 13 to the transmission shaft 53. The end close to the transmission sprocket two 54 of the transmission shaft 53 is connected with the driven sprocket one 55. One end of the hexagonal shaft 3 is connected with the driven sprocket two 56. The driven sprocket one 55 and the driven sprocket two 56 are driven sprocket transmission connection, and power is transmitted from the transmission shaft 53 to the hexagonal shaft 3. After the hexagonal shaft 3 receives power, the ridging assembly is driven to perform the groove pressing and ridging operation.
[0029] The working principle of the sweet stevia sowing machine is as follows: the motor transmits power to the speed reducer 11. After the speed reducer 11 reduces the rotating speed and increases the torque, the power is transmitted to the chain wheel speed reducer 13 through the driving chain wheel one 5, the driving chain and the driving chain wheel two 51. After the chain wheel speed reducer 13 further adjusts the rotating speed and the torque, the power is transmitted to the transmission shaft 53 through the transmission chain wheel one 52, the transmission chain and the transmission chain wheel two 54. The transmission shaft 53 transmits the power to the hexagonal shaft 3 through the driven chain wheel one 55, the driven chain and the driven chain wheel two 56. The gearbox 12 receives the power from the speed reducer 11 and further adjusts the rotating speed and the torque according to the requirement. The gearbox 12 transmits the power to the two rotary tillage shafts 2 through the output shaft, so that they rotate synchronously. The rotary tillage knives 21 on the rotary tillage shafts 2 cut and turn the soil during the rotation, and the rotary tillage operation is realized. The hexagonal shaft 3 receives the power from the transmission shaft 53 and drives the press groove wheel shaft 31 to rotate. The press groove wheel 32 on the press groove wheel shaft 31 presses the groove on the soil surface, and prepares for the subsequent ridging operation. The ridging wheels 33 at the two ends of the press groove wheel shaft 31 push the soil on both sides of the groove to form the ridge. The appropriate sweet stevia seeds are preloaded in the sowing box 4. When the sowing machine travels, the sowing pipe 41 uniformly spreads the seeds in the sowing box 4 into the ridge formed by the ridging assembly. Through the multiple equidistantly distributed sowing boxes 4 and sowing pipes 41, the uniform spreading of the seeds is realized, and the sowing quality is improved.
[0030] The circuit and the control involved in the utility model are prior art, and too much repetition is not performed herein.
[0031] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.
Claims
1. A stevia seeder characterized by comprising: Include: Frame (1) ; The rotary tillage assembly and the ridging assembly arranged at the bottom of the frame (1), and The seeding assembly arranged at the top of the frame (1) ; Wherein, the rotary tillage assembly is located away from the ridging assembly, and the rotary tillage assembly is provided with a rotary tillage piece, and the soil can be rotary tilled through the rotary tillage piece; The top of the frame (1) is provided with a speed reducer (11) above the rotary tillage assembly, and the output shaft of the speed reducer (11) is connected with a gearbox (12), and the gearbox (12) is located below the frame (1).
2. The stevia seeder of claim 1, wherein The rotary tillage assembly includes rotary tillage shafts (2) rotatably connected to both sides of the bottom of the frame (1), the output end of the gearbox (12) is connected to the side of the rotary tillage shafts (2) close to each other, and the outer side of the rotary tillage shafts (2) is connected with a plurality of rotary tillage knives (21) equidistantly along the rotation axis, the rotary tillage machine cover plate (22) is installed above the rotary tillage shafts (2) of the frame (1), and the rotary tillage machine cover plate (22) is located on both sides of the speed reducer (11).
3. The stevia seeder of claim 2, wherein, The ridging assembly includes a hexagonal shaft (3) rotatably connected to one side of the bottom of the frame (1), and the hexagonal shaft (3) is located away from the rotary tillage shaft (2), the outer side of the hexagonal shaft (3) is connected with a pressure groove wheel shaft (31), the outer side of the pressure groove wheel shaft (31) is connected with a plurality of equidistantly distributed pressure groove wheels (32), and the outer side of the pressure groove wheel shaft (31) is connected with a ridging wheel (33) at both ends.
4. The stevia seeder of claim 3, wherein, The seeding assembly includes a plurality of equidistantly distributed seeding boxes (4) mounted on the top of the frame (1), and the seeding box (4) is located on one side above the hexagonal shaft (3), and the bottom of each seeding box (4) is connected with a seeding pipe (41).
5. The stevia seeder of claim 4, wherein, The input shaft of the speed reducer (11) is connected with a driving sprocket (5), the top of the frame (1) is provided with a sprocket speed reducer (13) on one side of the speed reducer (11), the input shaft of the sprocket speed reducer (13) is connected with a driving sprocket (51), the outer sides of the driving sprocket (5) and the driving sprocket (51) are connected through a driving chain, the output end of the sprocket speed reducer (13) is connected with a transmission sprocket (52), the top of the frame (1) is provided with a transmission shaft (53) on one side of the center, the outer side of the transmission shaft (53) is connected with a transmission sprocket (54), the outer sides of the transmission sprocket (52) and the transmission sprocket (54) are connected through a transmission chain, one end of the transmission shaft (53) close to the transmission sprocket (54) is connected with a driven sprocket (55), one end of the hexagonal shaft (3) is connected with a driven sprocket (56), and the outer sides of the driven sprocket (55) and the driven sprocket (56) are connected through a driven sprocket transmission.
6. The stevia seeder of claim 5, wherein, The bottom of the frame (1) is provided with a ridging frame (6), and the ridging frame (6) is located between the rotary tillage assembly and the ridging assembly.