A method for actively scooping potatoes with a cam-driven seed spoon

Abstract

This invention relates to a cam-driven method for actively filling potatoes with seeds using a seed scoop. Multiple retractable push-rod seed scoops are installed on a seed distribution belt. The seed distribution belt drives these retractable push-rod seed scoops to move sequentially from bottom to top through a seed box. Each retractable push-rod seed scoop includes a positioning plate fixed to the seed distribution belt and a push rod slidably attached to the positioning plate along the intersection direction of the seed distribution belt. A seed scoop is fixed to the front end of the push rod, and a roller is mounted at the rear end. A cam-driven seed scoop retrieval device is installed at the seed box. This device includes a fixed cam. When the retractable push-rod seed scoop passes the cam, the cam contacts the roller, thereby driving the seed scoop at the front end of the push rod to extend forward. This extension, coupled with the vertical movement of the seed scoop generated by the movement of the seed distribution belt, forms a scooping motion, allowing the seed scoop to actively fill the seed box, thus significantly improving the filling rate and avoiding the low filling rate problem caused by the poor flowability of cut seed potatoes.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a cam-driven seed scoop method for actively scooping potatoes into the soil. Background Technology

[0002] Potatoes are one of the world's four major staple food crops. my country ranks first in the world in both potato planting area and yield. To make planting faster and save manpower, mechanized potato planting is an inevitable path. Cut potato seed tubers can effectively reduce the amount of seed needed, greatly reducing potato production costs. The seed metering device is the core component of potato planting machinery. Currently, the seed metering method of the spoon-type potato seed tuber metering device uses a passive method of feeding the cut seed tubers into the seed spoon. Due to the extremely poor flowability of the cut seed tubers, this results in low filling rates and serious problems of missed planting. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a cam-driven active scooping method for filling potatoes with seeds. This method is used in a scoop-belt type potato cutting seed metering device. The seed metering belt pulls a retractable push rod seed scoop to move. When the retractable push rod seed scoop passes through the seed box's seed-taking area, the roller at the end of the retractable push rod engages with the convex contour of the cam-driven seed scooping device. Under the traction of the seed metering belt, the cam pushes the push rod, causing the seed scoop to generate an active scooping motion trajectory, thus achieving active seed filling and avoiding the low filling rate problem caused by the poor flowability of the cut seed potatoes.

[0004] This invention is achieved through the following technical solution, providing a cam-driven seed spoon active scooping method for potato seed filling: Multiple retractable push rod seed spoons are installed on a seed metering belt. The seed metering belt drives these retractable push rod seed spoons to move sequentially from bottom to top through the seed box. Each retractable push rod seed spoon includes a positioning plate fixed to the seed metering belt and a push rod slidably connected to the positioning plate along the intersection direction of the seed metering belt. A seed spoon is fixed to the front end of the push rod, and a roller is mounted on the rear end of the push rod. A cam-driven seed spoon scooping device is installed at the seed box. This device includes a fixed cam. When the retractable push rod seed spoon passes the cam, the cam contacts the roller, thereby driving the seed spoon at the front end of the push rod to extend forward. This extension, coupled with the vertical movement of the seed spoon generated by the movement of the seed metering belt, forms a scooping motion, allowing the seed spoon to actively scoop in seeds.

[0005] The seed scoop in this solution uses an active scooping method, which can significantly increase the contact between the seed scoop and the potato cuttings, and effectively improve the problem of high missed planting caused by the poor flowability of potato cuttings.

[0006] As an optimization, the retractable push rod seed spoon also includes a tension return spring for pulling the push rod backward. In this design, the tension return spring is used to pull the push rod backward, thereby resetting the seed spoon to its original position.

[0007] As an optimization, the sliding direction of the push rod is perpendicular to the moving direction of the seed metering belt. This makes the forward movement of the seed scoop perpendicular to the moving direction of the seed metering belt, facilitating coupling to form a scooping motion.

[0008] As an optimization, the upper and front ends of the seed scoop are open, and the bottom surface of the seed scoop is arc-shaped. The open upper and front ends of the seed scoop in this design facilitate the scooping of seed potatoes when moving forward and upward.

[0009] As an optimization, the positioning plate includes a seed metering belt fixing plate and a seed metering belt stop plate that are fixedly connected together. The seed metering belt fixing plate is fitted and fixed to the seed metering belt, and both the seed metering belt fixing plate and the seed metering belt stop plate have guide holes adapted to the push rod. The guide holes in this solution realize the sliding guidance of the push rod.

[0010] As an optimization, the cam-driven seed scooping device also includes a positioning slot. When the seed scoop moves in a telescopic motion, the positioning plate is guided by the positioning slot to prevent the seed dispensing belt from deforming due to the telescopic motion of the seed scoop.

[0011] As an optimization, the contact between the cam and the roller and the traction of the seed dispensing belt combine to form the seed spoon filling and resetting motion trajectory, which includes a forward arc trajectory, a resetting arc trajectory and a resetting straight line trajectory.

[0012] As an optimization, the center of the forward arc trajectory is located on the intersection of the plane of the seed spoon movement and the contact surface between the seed distribution strip and the seed population in the seed box. The radius of the forward arc trajectory is 0.2 to 0.25 times the seed layer height, and the central angle of the forward arc trajectory is 50 to 60 degrees.

[0013] As an optimization, the reset arc trajectory is tangent to the forward arc trajectory, causing the seed spoon to tend to reset. The radius of the reset arc trajectory is 1 / 3 of the radius of the forward arc trajectory. The reset straight trajectory is tangent to the reset arc trajectory, causing the seed spoon to reset.

[0014] The beneficial effects of this invention are as follows: The cam-driven seed spoon active scooping method for potato seed filling utilizes a retractable push rod seed spoon to fill potato chunks. On one hand, the cam-driven seed spoon scooping device ensures the accuracy of the real-time movement position of the seed spoon during the filling process, guaranteeing the precision of the active scooping trajectory. On the other hand, the retractable push rod seed spoon scooping motion significantly increases the contact between the seed spoon and the potato chunks, and generates relative movement between them, achieving active filling and greatly improving the filling rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this invention;

[0016] Figure 2 This is a diagram of the seed filling and reset process of the present invention;

[0017] Figure 3 This is a schematic diagram of the cam and positioning slot of the present invention;

[0018] Figure 4 This is a partial cross-sectional view of the convex contour line of the present invention;

[0019] Figure 5 This is a structural diagram of the retractable push rod seed spoon of the present invention;

[0020] Figure 6 This is a diagram showing the extended push rod and seed spoon of the present invention in the forward-extended state.

[0021] Figure 7 This is a diagram showing the retractable push rod seed spoon of the present invention in its retracted state;

[0022] Figure 8 This is a schematic diagram of the positioning plate structure of the present invention;

[0023] As shown in the figure:

[0024] 1. Frame, 2. Seed metering belt, 3. Seed box, 4. Cam-driven seed spoon scooping device, 5. Telescopic push rod seed spoon, 6. Cam, 7. Forward arc profile, 8. Reset arc profile, 9. Reset straight profile, 10. Positioning slot, 11. Seed spoon, 12. Push rod, 13. Tension return spring, 14. Positioning plate, 15. Roller, 16. Seed metering belt fixing plate, 17. Seed metering belt stop plate. Detailed Implementation

[0025] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] like Figures 1-8 As shown, the present invention provides a cam-driven active scooping method for potato seed filling: multiple retractable push rod scoops 5 are installed on the seed metering belt 2. The retractable push rod scoops 5 move in a cycle with the traction of the seed metering belt 2, and the seed metering belt 2 drives the multiple retractable push rod scoops 5 to move and pass through the seed box 3 from bottom to top in sequence.

[0027] In this embodiment, the seed metering belt 2 moves in a triangular circular motion, including a vertical upward section, a horizontal moving section, and an inclined downward section. When the seed metering belt 2 is in the vertical upward section, it passes through the seed box 3. When the retractable push rod seed spoon 5 moves to the seed taking area of ​​the seed box 3, the seed potatoes in the seed box 3 are taken out to achieve seed filling.

[0028] The retractable push rod seed scoop 5 includes a positioning plate 14 fixed to the seed metering belt 2 and a push rod 12 slidably connected to the positioning plate 14 along the intersecting direction of the seed metering belt 2. In this embodiment, the sliding direction of the push rod 12 is perpendicular to the moving direction of the seed metering belt 2. A seed scoop 11 is fixed to the front end of the push rod 12, and a roller 15 is installed at the rear end of the push rod 12.

[0029] A cam-driven seed spoon scooping device 4 is installed at the seed box 3. The cam-driven seed spoon scooping device 4 includes a fixed cam 6. When the retractable push rod seed spoon 5 passes through the cam 6, the cam 6 contacts the roller 15, thereby driving the seed spoon 11 at the front end of the push rod 12 to extend forward. This movement is coupled with the vertical movement of the seed spoon 11 generated by the movement of the seed belt 2 to form a scooping movement. The seed spoon 11 performs active scooping and filling of seeds.

[0030] The seed spoon 11 is fixed to the front end of the push rod 12. The upper end and front end of the seed spoon 11 are open to facilitate scooping in seed potatoes when moving forward and upward. The bottom surface of the seed spoon 11 is arc-shaped.

[0031] like Figure 8 As shown, the positioning plate 14 includes a seed metering belt fixing plate 16 and a seed metering belt stop plate 17 that are fixed together. The seed metering belt fixing plate 16 and the seed metering belt stop plate 17 are arranged in parallel and are fixed together by a connecting rod.

[0032] The seed metering belt fixing plate 16 is fitted and fixed to the seed metering belt 2, and the connection is achieved by bolts. Both the seed metering belt fixing plate 16 and the seed metering belt stop plate 17 have guide holes that are adapted to the push rod 12, thereby realizing the sliding guidance of the push rod 12.

[0033] The retractable push rod seed spoon 5 also includes a tension return spring 13 that pulls the push rod 12 backward. When the seed spoon 11 reaches the forward extension limit position, the seed spoon 11 returns to its original position under the tension of the tension return spring 13, thus completing the seed filling process.

[0034] The tension return spring 13 is a tension spring, with one end connected to the push rod 12 and the other end connected to the seed metering belt stop plate 17. In this embodiment, there are two tension return springs 13, which are located on both sides of the push rod 12 respectively, so as to balance the tension.

[0035] The cam-driven seed scoop 4 also includes a positioning slot 10, which is a guide slot and is fixedly connected to the frame 1. When the seed scoop 11 moves in a telescopic motion, the positioning plate 14 is guided by the positioning slot 10 to prevent the seed scoop 11 from deforming the seed dispensing belt 2 due to its telescopic motion.

[0036] In this embodiment, the positioning slot 10 is vertically arranged, and the seed-discharging belt stop plate 17 of the positioning plate 14 is inserted into the positioning slot 10. Therefore, when the seed spoon 11 performs telescopic movement, the seed-discharging belt stop plate 17 cooperates with the positioning slot 10.

[0037] The convex profile includes a forward-extending circular arc profile 7, a reset circular arc profile 8, and a reset straight line profile 9.

[0038] The contact between the profile of the cam 6 and the roller 15, combined with the traction of the seed distribution belt, forms the seed filling and resetting motion trajectory of the seed spoon 11. Figure 2 The diagram shows the seed filling and resetting process, illustrating the positions of the three seed spoons 11 from bottom to top. The lines connecting the seed spoons 11 in the diagram represent the trajectory of the seed filling and resetting process, with the seed spoons 11 moving along the trajectory between 1, 2, and 3.

[0039] The seed spoon's reset motion trajectory includes a forward arc trajectory, a reset arc trajectory, and a reset straight line trajectory.

[0040] The center of the forward-extending circular trajectory is located on the intersection of the plane of the seed spoon's movement and the contact surface between the seed distribution strip and the seed box population. The seed box population is the collection of potato seeds in the seed box. Therefore, the contact surface between the seed distribution strip and the seed box population is a vertical plane, which can be understood as the plane where the seed distribution strip is located. The plane of the seed spoon's movement is... Figure 2 The plane of the paper, therefore the center of the extended circular arc trajectory passes through... Figure 2 The vertical line of the middle row seeding plane.

[0041] The radius of the forward arc trajectory is 0.2 to 0.25 times the seed layer height, where the seed layer height refers to the total height of the potato seeds in the seed box, and the central angle of the forward arc trajectory is 50 to 60 degrees.

[0042] The reset arc trajectory is tangent to the forward arc trajectory, causing the seed spoon to tend to reset. The radius of the reset arc trajectory is 1 / 3 of the radius of the forward arc trajectory. The reset straight trajectory is tangent to the reset arc trajectory, causing the seed spoon to reset.

[0043] This invention also discloses a cam-driven seed spoon active scooping potato seed filling device for a spoon-belt type potato cutting seed potato metering device, including a retractable push rod seed spoon 5 and a cam-driven seed spoon scooping device 4; the retractable push rod seed spoon 5 is fixedly connected to the metering belt 2. This solves the problem that the seed spoon of the current spoon-belt type potato cutting seed potato metering device can only passively fill seeds, resulting in a high rate of missed planting. It achieves active scooping of seeds when the seed spoon is in the seed filling area of ​​the seed box, significantly reducing the missed planting rate.

[0044] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A cam-driven scoop main scooping potato filling method, characterized in that: a plurality of telescopic push rod scoops (5) are installed on the seed belt (2), and the plurality of telescopic push rod scoops (5) are moved by the seed belt (2) and pass through the seed box (3) in turn from bottom to top; the telescopic push rod scoop (5) comprises a positioning plate (14) fixed on the seed belt (2) and a push rod (12) slidingly connected to the positioning plate (14) in the cross direction of the seed belt (2), the front end of the push rod (12) is fixed with a scoop (11), and the rear end of the push rod (12) is provided with a roller (15); a cam-driven scoop scooping device (4) is installed at the seed box (3), the cam-driven scoop scooping device (4) comprises a fixed cam (6), when the telescopic push rod scoop (5) passes through the cam (6), the cam (6) contacts with the roller (15) to drive the scoop (11) at the front end of the push rod (12) to move forward, and the vertical movement of the scoop caused by the movement of the seed belt (2) is coupled to form scooping movement, and the scoop (11) performs active scooping filling; the telescopic push rod scoop (5) further comprises a stretching reset spring (13) for pulling the push rod (12) backward; the sliding direction of the push rod (12) is perpendicular to the moving direction of the seed belt (2); the positioning plate (14) comprises a seed belt fixed plate (16) and a seed belt stop plate (17) fixed as one body, the seed belt fixed plate (16) is fixedly connected with the seed belt (2), and guide holes adapted to the push rod (12) are formed in the seed belt fixed plate (16) and the seed belt stop plate (17); the cam-driven scoop scooping device (4) further comprises a positioning slot (10), the positioning plate (14) is guided by the positioning slot (10) when the scoop (11) performs telescopic movement, the positioning slot (10) is vertically arranged, and the seed belt stop plate (17) of the positioning plate (14) is inserted into the positioning slot (10); the contact between the cam (6) and the roller (15) and the traction of the seed belt form a scoop filling reset movement track, the scoop filling reset movement track comprises a forward extension arc track, a reset arc track and a reset straight line track, and the cam profile comprises a forward extension arc profile (7), a reset arc profile (8) and a reset straight line profile (9). The upper end and the front end of the scoop (11) are open, and the bottom surface of the scoop (11) is arc-shaped. The center of the forward extension arc track is located on the intersection line of the scoop movement plane and the contact surface of the seed belt and the seed box, the radius of the forward extension arc track is 0.2 to 0.25 times the height of the seed layer, and the central angle of the forward extension arc track is 50 to 60 degrees. The reset arc track is tangent to the forward extension arc track, so that the scoop has a reset movement trend, the radius of the reset arc track is 1 / 3 of the radius of the forward extension arc track, and the reset straight line track is tangent to the reset arc track to reset the scoop. ​ ​ ​ ​ ​ 2. The cam-driven scoop primary potato filling method of claim 1, wherein: ​ 3. The cam-driven scoop primary potato filling method of claim 1, wherein: ​ 4. The cam-driven scoop primary potato filling method of claim 3, wherein: ​

Images