Profiling seeding monomer and seeding machine

Abstract

The profiling seeding unit comprises a main frame, the front end of the main frame is connected with a profiling mechanism, the main frame is further provided with a pressing mechanism and a furrow opener, the pressing mechanism comprises a connecting rod, the non-end position of the connecting rod is rotationally connected with the main frame, and a pressing wheel is arranged at the bottom end of the connecting rod; a locking mechanism is arranged between the top end of the connecting rod and the main frame to lock and fix the connecting rod and the main frame, the seeding single body can adjust the press wheel, so that the press force meets the requirement, and the adjustment is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a contour seeding unit and a seeding machine. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] With the development of moderate scale land management, traditional mechanical seeding equipment is developing towards large-scale and intelligent pneumatic collective row type. Large-scale seeding equipment has important technical advantages such as high autonomy, mobility, productivity and adjustment, and has far-reaching development prospects in agricultural production.

[0004] At present, the sowing unit profiling structure of the row seeding machinery is mostly a parallelogram linkage mechanism or no profiling mechanism, which has a complex structure and high unit cost. Moreover, when the sown crops are crops with small row spacing requirements such as wheat, the current unit profiling mechanism is bloated. Under the conditions of large width and high speed sowing, the parallelogram linkage mechanism is also prone to left and right shaking, resulting in row spacing deviation and poor sowing depth consistency. Moreover, the suppression mechanism of the current row seeding machinery profiling sowing unit cannot be adjusted independently, and the suppression force is small. When adjusting, it needs to cooperate with the overall adjustment of the unit. The adjustment is relatively complicated and the consistency of each row is poor. When applied to crops with a large number of sowing rows such as wheat, it affects the wheat sowing quality.

[0005] Therefore, the current mechanical structure of the contour seeding unit no longer meets the requirements of high-quality and high-efficiency large-scale production of wheat and other row seeding machinery, and has become a bottleneck restricting the efficient production of wheat. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a contoured sowing unit and a sowing machine, which are suitable for sowing crops such as wheat with a large number of sowing rows and a small row spacing.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] In the first aspect, an embodiment of the present invention provides a contour seeding unit, including a main frame, the front end of the main frame is connected to a contour mechanism, the main frame is also provided with a pressing mechanism and a furrow opener, the pressing mechanism includes a connecting rod, the non-end position of the connecting rod is rotatably connected to the main frame, the bottom end of the connecting rod is provided with a pressing wheel, and a locking mechanism is provided between the top end of the connecting rod and the main frame to lock and fix the connecting rod and the main frame.

[0009] Optionally, the locking mechanism includes a tooth seat, which is slidably connected to the main frame and has an elastic member between the tooth seat and the main frame. The side of the tooth seat facing the connecting rod is a first serrated surface, and the top surface of the connecting rod is an arc-shaped second serrated surface. The axis of the second serrated surface is coaxial with the rotation axis of the connecting rod.

[0010] Optionally, the tooth seat is slidably connected to the main frame via a slide groove provided on the main frame, and an elastic member is provided between the top groove surface of the slide groove and the tooth seat.

[0011] Optionally, it also includes an adjusting rod, on which a fulcrum groove and a driving groove are provided, the tooth seat is provided with a movable pin matching the driving groove, and the main frame is provided with a fixed pin matching the fulcrum groove.

[0012] Optionally, a scale line is provided on the top of the connecting rod.

[0013] Optionally, the contouring mechanism includes a polygonal frame, a polygonal beam is provided inside the polygonal frame, the polygonal beam is used to be fixedly connected to the frame of the seeder, a plurality of rubber bearings are provided between the polygonal frame and the polygonal beam so that the polygonal frame can rotate around the center of the polygonal beam, and a rotation angle limiter is provided on the inner side of the polygonal frame.

[0014] Optionally, the polygonal beam is an equilateral triangle beam, and correspondingly, the polygonal frame is an equilateral hexagonal deformation frame, and a rubber bearing is provided between each face of the equilateral triangle beam and the polygonal frame.

[0015] Optionally, the rubber bearing is a cylindrical rubber bearing.

[0016] Optionally, the rotation angle limiting member is a cylindrical barrier fixed to the inner side of the polygonal frame.

[0017] In a second aspect, an embodiment of the present invention provides a seeder provided with the contoured sowing unit described in the first aspect.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The contoured sowing unit of the present invention has a connecting rod rotatably connected to the main frame, so the position of the pressing wheel can be adjusted by rotating the connecting rod, thereby realizing the adjustment of the pressing force. When the pressing wheel is adjusted downward, the pressing force can be increased, thereby meeting the pressing force requirement, eliminating the need for secondary pressing, and improving the sowing efficiency. Moreover, the pressing mechanism of the sowing unit can be independently adjusted according to the actual operating status, without the need to adjust in conjunction with the sowing unit as a whole. The adjustment is more convenient and quick, and is suitable for the sowing needs of crops with a large number of rows and a small row spacing, such as wheat.

[0020] 2. The contoured sowing unit of the present invention is provided with an adjusting rod, which is combined with a fixed pin and a movable pin to utilize the lever principle to disengage the first serrated surface of the tooth seat from the second serrated surface of the connecting rod, thereby rotating the connecting rod to adjust the position of the pressing wheel, making the adjustment operation convenient, saving time and effort.

[0021] 3. The contoured sowing unit of the present invention has a contoured mechanism composed of a polygonal frame, a polygonal beam and a rubber bearing. Compared with a parallelogram linkage mechanism, it has a simpler structure, lower cost, occupies less space, and will not shake when in use, thus meeting the sowing needs of crops with smaller row spacing such as wheat.

[0022] 4. The contoured sowing unit of the present invention has a polygonal beam that adopts a regular triangle beam, and a polygonal frame that adopts a regular hexagonal deformation frame, so that the main frame can swing to a larger angle, can adapt to plots with complex terrain and obstacles, avoids damage, and improves the applicability of the entire sowing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the main frame structure of Example 1 of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the suppression mechanism of Example 1 of the present invention;

[0027] Figure 4 is a schematic diagram of the connecting rod structure of embodiment 1 of the present invention;

[0028] Figure 5 is a schematic diagram of the first seat structure of embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the second seat portion of Embodiment 1 of the present invention;

[0030] Figure 7 This is a schematic diagram of the movable pin structure of Embodiment 1 of the present invention;

[0031] Figure 8 This is a schematic diagram of the fixed pin structure of Embodiment 1 of the present invention;

[0032] Fig. 9 is a schematic diagram of the structure of the adjusting rod in Embodiment 1 of the present invention;

[0033] Fig.10 is a schematic diagram of a profiling mechanism in accordance with Embodiment 1 of the present invention;

[0034] Fig.11 This is a schematic diagram of the assembly of the first frame portion and the mounting plate of Embodiment 1 of the present invention;

[0035] Fig.12Schematic diagram of the maximum swing angle of the profiling mechanism of Example 1 of the present invention;

[0036] Among them, 1. main frame, 2. furrow opener, 3. connecting rod, 4. pressing wheel, 5. slide groove, 6. first seat part, 6-1. threaded hole, 7. second seat part, 8. protrusion, 9. movable pin, 9-1. first shaft section, 9-2. second shaft section, 9-3. internal threaded hole, 10. first serrated surface, 11. second serrated surface, 12. spring, 13. first boss, 14. second boss, 15. adjusting rod, 15-1. fulcrum groove, 15-2. driving groove, 16. fixed pin, 16-1. annular groove, 17. indicator plate, 18. hanging plate, 19. first frame part, 20. second frame part, 21. equilateral triangle beam, 22. rubber bearing, 23. block. DETAILED DESCRIPTION

[0037] Example 1

[0038] This embodiment provides a profiling sowing unit, such as Figure 1-Figure 2 As shown, it includes a main frame 1, which adopts a bow-shaped structure. A profiling mechanism is arranged at the front end, i.e., the top end, of the main frame 1. The profiling mechanism is used to connect with the frame body of the seeder to realize the swing of the entire profiling sowing unit with the terrain. During the forward movement of the seeder, the sowing unit floats up and down according to the undulations of the ground to maintain the consistency of the sowing depth and realize profiling. A furrow opener 2 is arranged at the other end, i.e., the bottom end, for furrowing the soil. A suppression mechanism is also provided on the main frame 1 for applying suppression pressure to the soil.

[0039] In this embodiment, the furrow opener 2 adopts an existing shoe-type furrow opener, which is welded and fixed to the bottom end of the main frame and is perpendicular to the horizontal plane.

[0040] like Figure 3-Figure 4 As shown, the suppression mechanism includes a connecting rod 3, the non-end position of the connecting rod 3 is rotatably connected to the main frame 1 through a rotating shaft, the connecting rod can rotate around the rotating shaft, the bottom end of the connecting rod 3 is installed with a suppression wheel 4 through a plurality of mounting holes, and a locking mechanism is provided between the top end of the connecting rod 3 and the main frame 1, and the locking mechanism can lock and fix the connecting rod 3 and the main frame 1, thereby locking and fixing the suppression wheel 4.

[0041] The locking mechanism includes a gear seat, which is slidably connected to the main frame 1 through a slide groove 5 starting from the main frame 1. The length direction of the slide groove 5 is along the radial direction of the circumference of the rotation trajectory of the connecting rod end, so that the movement direction of the gear seat is along the radial direction of the circumference of the rotation trajectory of the connecting rod end.

[0042] Specifically, Figure 5-Figure 6As shown, the gear seat includes a first seat portion 6 and a second seat portion 7, and the first seat portion 6 and the second seat portion 7 are respectively located on both sides of the main frame 1, and the surfaces facing each other of the first seat portion 6 and the second seat portion 7 are provided with a protrusion 8, and the protrusion 8 is embedded in the slide groove 5. The first seat portion 6 and the second seat portion 7 are slidably connected with the slide groove 5 through the protrusion 8, and a movable pin 9 passes between the first seat portion and the second seat portion 7 to connect the first seat portion 6 and the second seat portion 7 into a whole, wherein the side of the first seat portion 6 facing the connecting rod 3 is a first serrated surface 10.

[0043] Correspondingly, the top end surface of the connecting rod 3 is an arc surface, the axis of the arc surface is coaxial with the rotation axis of the connecting rod 3, that is, the axis of the rotating shaft, and the arc surface is a second serrated surface 11 matching the first serrated surface. The first serrated surface 10 and the second serrated surface 11 can mesh with each other.

[0044] An elastic member is provided between the tooth seat and the top groove surface of the slide groove 5. The elastic member is a spring 12. One end of the spring 12 is connected to the top groove surface of the slide groove 5, and the other end is connected to the top surface of the tooth seat, that is, connected to the top surface of the protrusion 8 of the first seat portion 6 and the second seat portion 7.

[0045] Furthermore, a first boss 13 is provided on the top groove surface of the slide groove 5, and a second boss 14 is provided on the top surface of the first seat portion 6. The spring 12 is sleeved on the outer periphery of the first boss 13 and the second boss 14. The first boss 13 and the second boss 14 are used to guide the extension direction of the spring 12.

[0046] The spring 12 can exert elastic force so that the first serrated surface 10 and the second serrated surface 11 can remain engaged, thereby locking and fixing the connecting rod 3 and the main frame 1.

[0047] like Figure 7 As shown, the movable pin 9 includes a first shaft segment 9-1, a second shaft segment 9-2 and a third shaft segment which are arranged in sequence. The diameter of the first shaft segment 9-1 is larger than the diameter of the second shaft segment 9-2, and the diameter of the second shaft segment 9-2 is larger than the diameter of the third shaft segment.

[0048] The first shaft section 9 - 1 is an optical axis, the second shaft section 9 - 2 has an external thread structure, and the end surface of the third shaft section is provided with an internal thread hole 9 - 3 arranged along the axial direction of the movable pin 9 .

[0049] The second shaft section 9-2 is threadedly connected to the first seat portion 6 through the threaded hole 6-1 set in the first seat portion 6, the third shaft section extends into the channel 7-1 set in the second seat portion 7, and the end of the third shaft section is threadedly connected to the fixing bolt through the internal threaded hole 9-3, and the head of the fixing bolt presses the outer side surface of the second seat portion 7, so that the second seat portion 7 is pressed on the outer side surface of one side of the frame body 1, and the protrusion 8 is embedded in the slide groove 5, and the first seat portion 6 is pressed on the outer side surface of the other side of the frame body 1 and the protrusion 8 is embedded in the slide groove 5.

[0050] In this embodiment, since the compression force of the spring 12 is large, it is difficult to directly move the gear seat. Therefore, the contoured sowing unit of this embodiment also includes an adjusting rod 15. Accordingly, a fixed pin 16 is provided on one side of the slide groove 5, and the fixed pin 16 is vertically welded and fixed to the main frame 1.

[0051] like Figure 8 As shown, the fixed pin 16 includes a fourth shaft segment and a fifth shaft segment which are arranged in sequence, the diameter of the fourth shaft segment is larger than the diameter of the fifth shaft segment, the fifth shaft segment is inserted into the fixing hole set in the main frame, the fixed pin 16 is welded and fixed to the main frame 1, and an annular groove 16-1 is set on the fourth shaft segment.

[0052] like Fig. 9 As shown, one end of the adjusting rod 15 is provided with a fulcrum groove 15-1 and a driving groove 15-2, and the fulcrum groove 15-1 and the driving groove 15-2 are arranged on opposite sides of the end of the adjusting rod 15, wherein the fulcrum groove 15-1 is used to cooperate with the annular groove 16-1 of the fixed pin 16, and the driving groove 15-2 is used to cooperate with the optical axis of the movable pin 9.

[0053] When in use, the annular groove 16-1 of the fixed pin 16 is partially inserted into the fulcrum groove 15-1, and the optical axis of the movable pin 9 is inserted into the driving groove 15-2. The staff presses down the adjusting rod 15. Using the principle of lever, the other end of the adjusting rod 15 drives the tooth seat through the movable pin 9 to overcome the elastic force of the spring 12 and move in the direction away from the connecting rod 3, thereby separating the first serrated surface 10 and the second serrated surface 11 from each other. At this time, the connecting rod 3 can be rotated to adjust the position of the pressing wheel 4.

[0054] The suppressing mechanism of this embodiment uses the lever principle through the adjusting rod in combination with the fixed pin 16 and the movable pin 9 to disengage the first serrated surface 10 of the tooth seat from the second serrated surface 11 of the connecting rod 3, thereby rotating the connecting rod 3 to adjust the position of the suppressing wheel 4. The adjustment operation is convenient, saving time and effort.

[0055] Furthermore, in order to achieve precise control over the adjustment of the position of the pressing wheel 4, the outer side surface of the top end of the connecting rod 3 is provided with scale lines, and accordingly, the first seat is fixed with an indicator plate 17, and the indicator plate 17 is located on the outside of the connecting rod 3. The staff can read the rotation angle of the connecting rod 3 through the scale lines and the indicator plate 17, thereby achieving control over the position adjustment of the pressing roller 4.

[0056] The suppression mechanism of the present embodiment can adjust the position of the suppression wheel 4 by rotating the connecting rod 3, so as to achieve the adjustment of the suppression pressure. When the suppression wheel 4 is adjusted downward, the suppression pressure can be increased to meet the suppression pressure demand, thereby eliminating the need for secondary suppression and improving the sowing efficiency. Moreover, the suppression mechanism of the sowing unit can be adjusted independently without the need to cooperate with the sowing unit for overall adjustment. The adjustment is more convenient and quick, and is suitable for the sowing needs of crops with a large number of rows and small row spacing, such as wheat.

[0057] like Figure 10-11 As shown, the front end of the main frame 1 is provided with a profiling mechanism, which includes a polygonal frame, a polygonal beam is coaxially arranged inside the polygonal frame, and a plurality of rubber bearings are arranged between the polygonal beam and the polygonal frame, so that the polygonal frame can rotate around the center of the polygonal beam.

[0058] In this embodiment, the polygonal frame adopts a regular hexagonal frame, and one end of the regular hexagonal deformation frame is welded and fixedly connected to the hanging plate 18, and the other end of the hanging plate is detachably fixedly connected to the main frame by bolts.

[0059] Furthermore, the regular hexagonal frame is composed of a first frame portion 19 and a second frame portion 20 that are detachably connected by bolts and nuts. The first frame portion 19 and the second frame portion 20 both adopt a bridge-type bending structure, and the first frame portion 19 and the second frame portion 20 are symmetrically arranged relative to the center of the regular hexagonal frame.

[0060] The middle portion of the outer side surface of the first frame portion 19 is vertically welded and fixed to the mounting plate 18 .

[0061] The polygonal beam is a regular triangle beam 21 located inside a regular hexagonal frame. A rubber bearing 22 is provided between each face of the regular triangle beam 21 and the regular hexagonal frame, so three rubber bearings 22 are provided in total.

[0062] Furthermore, the rubber bearing 22 is a cylindrical rubber bearing.

[0063] A rotation angle limiter is welded and fixed at a set position on the inner side surfaces of the two plates on both sides of the first frame part 19. The rotation angle limiter adopts a cylindrical stopper 23 to limit the maximum rotation angle of the regular hexagonal frame.

[0064] In this embodiment, a regular hexagonal frame and a regular triangular beam 21 are used, so that the main frame 1 can swing to a larger angle, can adapt to plots with complex terrain and obstacles, avoid damage, and improve the applicability of the entire sowing unit.

[0065] For example, Fig.12 As shown, the maximum rotation angle of the regular hexagonal frame of this embodiment is β. If a regular quadrilateral frame and a regular quadrilateral beam are used, the maximum rotation angle is α, and β is greater than α.

[0066] The contour-copying mechanism of this embodiment is composed of a polygonal frame, a polygonal beam and a rubber bearing. Compared with a parallelogram linkage mechanism, it has a simpler structure, lower cost and occupies less space, thus meeting the sowing requirements of crops with smaller row spacing such as wheat.

[0067] Example 2

[0068] This embodiment provides a seed drill, which is provided with the contoured seed drill unit described in Embodiment 1, wherein the polygonal beam is fixedly connected to the frame of the seed drill, and the remaining structure of the seed drill can adopt the existing technology, which will not be described in detail here.

[0069] When the seeder of this embodiment is sowing, the sowing unit digs a trench vertically on the ground under its own gravity. When the sowing unit moves upward, the regular hexagonal frame and the rubber bearing 22 rotate around the regular triangle beam 21, and the rubber bearing is squeezed. When the angle increases to β, the rubber bearing is blocked by the barrier. During the forward movement of the seeder, the sowing unit floats up and down according to the undulation of the ground to maintain the consistency of the sowing depth and achieve contouring.

[0070] When the position of the pressure wheel needs to be adjusted, the annular groove of the fixed pin is inserted into the fulcrum groove, and the optical axis of the movable pin is inserted into the driving groove. The staff presses down the adjustment rod. Using the principle of lever, the other end of the adjustment rod drives the tooth seat through the movable pin to overcome the elastic force of the spring and move in the direction away from the connecting rod, so that the first serrated surface and the second serrated surface are separated from each other. At this time, the connecting rod can be rotated, and the position of the pressure wheel can be adjusted in combination with the scale line and the indicator plate. After the adjustment is completed, remove the adjustment rod, and under the elastic force of the spring, the tooth seat is reset, and the first serrated surface and the second serrated surface are re-engaged to complete the pressure and sowing depth regulation. The higher the pressure wheel is, the deeper the sowing depth is, and the smaller the pressure is; the lower the pressure wheel is, the shallower the sowing depth is, and the greater the pressure is.

[0071] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A contoured sowing unit, characterized in that: It includes a main frame, the front end of which is connected to a profiling mechanism. The main frame is also provided with a suppressing mechanism and a furrow opener. The suppressing mechanism includes a connecting rod, the non-end position of the connecting rod is rotatably connected to the main frame, a suppressing wheel is provided at the bottom end of the connecting rod, and a locking mechanism is provided between the top end of the connecting rod and the main frame to lock and fix the connecting rod and the main frame.

2. A contoured sowing unit as claimed in claim 1, characterized in that: The locking mechanism includes a tooth seat, which is slidably connected to the main frame and has an elastic member between the tooth seat and the main frame. The side of the tooth seat facing the connecting rod is a first serrated surface, and the top surface of the connecting rod is an arc-shaped second serrated surface. The axis of the second serrated surface is coaxial with the rotation axis of the connecting rod.

3. A contoured sowing unit as claimed in claim 2, characterized in that: The tooth seat is slidably connected to the main frame via a slide groove arranged on the main frame, and an elastic member is arranged between the top groove surface of the slide groove and the tooth seat.

4. A contoured sowing unit as claimed in claim 2, characterized in that: It also includes an adjusting rod, on which a fulcrum groove and a driving groove are arranged, the tooth seat is provided with a movable pin matching the driving groove, and the main frame is provided with a fixed pin matching the fulcrum groove.

5. A contoured sowing unit as claimed in claim 1, characterized in that: The top of the connecting rod is provided with a scale line.

6. A contoured sowing unit as claimed in claim 1, characterized in that: The profiling mechanism includes a polygonal frame, a polygonal beam is arranged inside the polygonal frame, the polygonal beam is used to be fixedly connected to the frame of the seeder, a plurality of rubber bearings are arranged between the polygonal frame and the polygonal beam so that the polygonal frame can rotate around the center of the polygonal beam, and a rotation angle limiter is arranged on the inner side of the polygonal frame.

7. A contoured sowing unit as claimed in claim 6, characterized in that: The polygonal beam adopts an equilateral triangle beam, and correspondingly, the polygonal frame adopts an equilateral hexagonal deformation frame. A rubber bearing is arranged between each face of the equilateral triangle beam and the polygonal frame.

8. A contoured sowing unit as claimed in claim 6, characterized in that: The rubber bearing is a cylindrical rubber bearing.

9. A contoured sowing unit as claimed in claim 6, characterized in that: The rotation angle limiting member is a cylindrical barrier fixed on the inner side of the polygonal frame.

10. A seed drill, characterized in that: A contoured sowing unit as described in any one of claims 1 to 9 is provided.

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