Clay grain seeder

Abstract

The clay grain seeding machine comprises a rotary tillage system and a seeding and pressing system which are arranged front and back; a plurality of convex rings coaxial with the central axis of the soil pressing roller are transversely arranged on the outer wall of the soil pressing roller at intervals; a soil covering device is arranged between the seeding system and the pressing system; a feather-shaped protective cover is arranged on the outer side of the soil covering device, and a plurality of soft skins are overlapped end to end to form a protective cover which is provided with a downward opening, surrounds the periphery of the soil covering cutter head and has a semicircular longitudinal section; the pressing roller is adjusted through the pressing pressure adjusting system; the pressing pressure adjusting system comprises two hydraulic adjusting units; the hydraulic adjusting unit comprises a hydraulic cylinder with a longitudinal central axis, and the hydraulic cylinder stretches out and draws back through a piston rod and can drive the pressing roller to rotate around the center where the front end of the pressing roller connecting side plate is hinged to the middle lower portion of the rear portion of the seeding pressing system side plate; a piston rod of the hydraulic cylinder is provided with two springs. The ditching quality is remarkably improved, the seeding quality is remarkably improved through soil covering of the spiral blades and floating pressing, and the device is particularly suitable for clay soil operation.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a clay grain seeder. Background Art

[0002] The grain seeder can be installed on agricultural machinery to realize the integrated operation of rotary tillage and sowing, and improve the efficiency of farmland operation. The grain seeder performs rotary tillage in front, furrowing and sowing in the back, and then suppresses. The grain seeder includes a furrowing system, a sowing system, and a suppression system. The furrowing system of the existing grain seeder includes a furrowing disc arranged horizontally at intervals, and the furrowing disc includes two discs arranged vertically and spaced opposite to each other, and the two discs are in an eight-shaped shape (the distance between the two discs is smaller in the front and larger in the back). In this way, when the grain seeder is working, the furrowing disc separates the soil that is rotary tilled in front to both sides to form a furrow. The furrow is relatively loose and easy to collapse under the impact of water, especially after furrowing in clay soil, the clay separated on both sides may collapse into the newly opened furrow. Since the quality of the furrow is poor, it affects the sowing quality. In addition, the soil after furrowing is partially covered in the furrow opened, and partially covered on the seedbeds on both sides of the furrow, which increases the soil thickness on both sides of the furrow, which has an adverse effect on the germination of seedlings in the future. Summary of the invention

[0003] Aiming at the deficiencies of the prior art, the present invention proposes a clay grain seeder that can solve the above problems.

[0004] The present invention achieves the technical objectives through the following technical solutions.

[0005] A clay grain seeder, comprising a rotary tillage system and a sowing and pressing system arranged at the front and rear; the sowing and pressing system comprises two longitudinally vertically arranged parallel and spaced opposite sowing and pressing system side plates and a furrowing system, a sowing system and a pressing system arranged at the front and rear; the furrowing system comprises a transversely arranged flat soil pressing roller, the soil pressing roller is rotatably connected between the two sowing and pressing system side plates; the pressing system comprises a transversely arranged flat pressing roller, the pressing roller is rotatably connected to the lower part of the rear part of the two longitudinally vertically arranged parallel and spaced opposite pressing roller connection side plates; the modified The invention is advanced in that: a plurality of convex rings coaxial with the central axis of the soil pressing roller are arranged at transverse intervals on the outer wall of the soil pressing roller; the plurality of convex rings are evenly spaced transversely; a soil covering device is arranged between the sowing system and the pressing system, and the soil covering device comprises a soil covering knife shaft and a plurality of soil covering knife discs; the soil covering knife shaft is horizontally placed and rotatably connected between two side plates of the sowing and pressing system; the plurality of soil covering knife discs are arranged at transverse intervals on the outer wall of the soil covering knife shaft and on both sides of the convex rings; the soil covering knife disc comprises a plurality of spiral blades arranged circumferentially along the outer side of the soil covering knife shaft.

[0006] Furthermore, the number of spiral blades on the soil covering cutter disc is 2 to 8.

[0007] Furthermore, a feather-shaped protective cover is provided on the outer side of the soil covering device, and the feather-shaped protective cover includes a plurality of soft skins and a plurality of soft skin support tubes. The soft skins are in the shape of long strips and are arranged horizontally; the plurality of soft skins are stacked end to end to form a protective cover with an opening downward, surrounding the soil covering blade disc, and a semicircular longitudinal section, and the rear outer wall of a front soft skin is overlapped with the middle and rear inner wall of the adjacent soft skin behind from the inside; the soft skin support tube is horizontally laid flat, and both ends are fastened between two side plates of the sowing and suppression system; the front outer wall of the soft skin is fixedly connected to the soft skin support tube at the corresponding position.

[0008] Further, the pressing roller is adjusted by a pressing pressure adjustment system.

[0009] Furthermore, the suppression pressure regulating system includes two hydraulic regulating units; the hydraulic regulating unit includes a hydraulic cylinder with a longitudinal central axis; the front end of the suppression roller connecting side plate is hingedly connected to the middle and lower part of the rear part of the sowing suppression system side plate; the upper part of the rear part of the sowing suppression system side plate is rotatably connected to a hydraulic cylinder connecting block which is horizontally placed along the central axis; the cylinder body of the hydraulic cylinder is hingedly connected to the upper part of the rear part of the suppression roller connecting side plate, and the piston rod of the hydraulic cylinder is connected to the hydraulic cylinder connecting block; the hydraulic cylinder can drive the suppression roller to rotate around the center of the hinge connection between the front end of the suppression roller connecting side plate and the middle and lower part of the rear part of the sowing suppression system side plate through the extension and retraction of the piston rod.

[0010] Furthermore, the piston rod of the hydraulic cylinder is loosely fitted and passes through the hydraulic cylinder connecting block. Two springs are provided on the hydraulic cylinder piston rod to sandwich the hydraulic cylinder connecting block. The piston rod of the hydraulic cylinder is provided with respective limiting structures at opposite ends of the two springs.

[0011] Compared with the prior art, the present invention has the following positive effects: 1. The furrowing system includes a horizontally placed soil-pressing roller. A number of convex rings coaxial with the central axis of the soil-pressing roller are arranged at intervals on the outer wall of the soil-pressing roller. When working, the soil that is rotary tilled in front is initially rolled and the furrows are pressed out (ditching) by the convex rings. Since the furrows opened at this time are pressed out by the convex rings and the soil on both sides of the pressed furrows are relatively compacted after initial rolling, the furrowing quality is significantly improved. Even if it is used in clay, the furrowing quality can be guaranteed, thereby ensuring the sowing quality.

[0012] 2. When working, the soil covering device can basically draw all the soil produced by the trenching on both sides of the trench into the trench through the spiral blade rotating on the soil covering knife disc, covering the sown seeds, which will not increase the soil thickness on both sides of the trenching and will not cause adverse effects on the germination of future seedlings.

[0013] 3. A feather-shaped protective cover is provided on the outer side of the soil covering device. Since a plurality of soft skins of the soil covering device are stacked end to end along the rotation direction of the soil covering cutter disc to form a protective cover with an opening downward, surrounding the soil covering cutter disc and a semicircular longitudinal section, when working, one end of the soft skin naturally droops under the action of gravity. After the soil and mud generated by soil covering stick to the soft skin, the spiral blade on the rotating soil covering cutter disc hits the drooping end of the soft skin to knock down the soil and mud stuck to the soft skin. This avoids the problem that when the prior art works in clay soil, the soil and mud stuck to the inner wall of the protective cover are not easy to fall off, and more soil and mud are accumulated and fall off in blocks, resulting in serious uneven soil covering. The feather-shaped protective cover of the present invention is adopted to ensure uniform soil covering.

[0014] 4. The pressing roller can be adjusted through the pressing pressure adjustment system. The pressing pressure of the pressing roller on the ground can be adjusted according to needs to ensure the pressing effect. Appropriate pressing pressure will improve the moisture retention and frost resistance of the seed bed.

[0015] 5. Two springs are provided on the piston rod of the hydraulic cylinder, which clamp the hydraulic cylinder connecting block in the middle. When working, two-way elastic buffering is performed to achieve floating suppression, further ensuring the suppression effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the present invention viewed from the front to the back at one angle.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from the back to the front from another angle.

[0018] Figure 3 for Figure 2 Schematic cross-section diagram of .

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of part I.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the side panels of the suppression system and the sowing suppression system of the present invention viewed from the back to the front at an angle.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the suppression system and the side plate of the sowing suppression system of the present invention viewed from the front to the back at another angle.

[0022] Figure 7 The figure is a schematic diagram of the three-dimensional structure of the feather-shaped protective cover and soil covering device of the present invention viewed from the front to the back at one angle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Attached Figures 1 to 7 The clay grain seeder shown includes a rotary tillage system 2 and a sowing and pressing system 1 arranged at the front and rear; the sowing and pressing system 1 includes two longitudinally vertical and parallel sowing and pressing system side plates 35 opposite to each other and a furrowing system, a sowing system, and a pressing system arranged at the front and rear.

[0025] The furrowing system includes a laterally flat soil-pressing roller 11, which is rotatably connected between two sowing and pressing system side plates 35; 16 (other embodiments provide 2 to 15 or more than 16) convex rings 12 coaxial with the central axis of the soil-pressing roller 11 are evenly spaced laterally on the outer wall of the soil-pressing roller 11.

[0026] A soil covering device is provided between the sowing system and the suppression system, and the soil covering device includes a soil covering cutter shaft 14 and 36 soil covering cutter discs (the number of soil covering cutter discs is twice that of the convex ring 12); the soil covering cutter shaft 14 is horizontally placed and rotatably connected between two sowing and suppression system side plates 35; the 36 soil covering cutter discs are laterally spaced on the outer wall of the soil covering cutter shaft 14 and are arranged on both sides of the convex ring 12 (one soil covering cutter disc is arranged on each side of each convex ring 12); the soil covering cutter disc includes 4 spiral blades 16 arranged along the circumference of the outer side of the soil covering cutter shaft 14 (in other embodiments, the soil covering cutter disc includes 2 to 3 or 5 to 8 spiral blades 16 arranged along the circumference of the outer side of the soil covering cutter shaft 14).

[0027] A feather-shaped protective cover 17 is provided on the outer side of the soil covering device, and the feather-shaped protective cover 17 includes 7 soft skins 171 (other embodiments include 4 to 6 or more soft skins 171), 7 soft skin support tubes 172 (the number of soft skin support tubes 172 cannot be less than the number of soft skins 171), and the soft skins 171 are in the shape of long strips and arranged horizontally; the 7 soft skins 171 are stacked end to end along the rotation direction of the soil covering knife disc (other embodiments include 4 to 6 or more soft skins 171 are stacked end to end), forming a protective cover with an opening downward, surrounding the soil covering knife disc, and a semicircular longitudinal section, and the rear outer wall of the front soft skin 171 is overlapped with the middle and rear inner wall of the adjacent soft skin 171 behind from the inside; the soft skin support tube 172 is horizontally flat, and both ends are fastened and connected between the two sowing and suppression system side plates 35; the front outer wall of the soft skin 171 is fixedly connected to the soft skin support tube 172 at the corresponding position.

[0028] The suppression system includes a laterally placed suppression roller 31, which is rotatably connected to the lower part of the rear of two longitudinally placed, parallel and spaced-apart suppression roller connection side plates 32; the suppression roller 31 is adjusted by a suppression pressure adjustment system; the suppression pressure adjustment system includes two hydraulic adjustment units; the hydraulic adjustment unit includes a hydraulic cylinder 34 with a longitudinal center axis; the front end of the suppression roller connection side plate 32 is hinged to the middle and lower part of the rear of the sowing suppression system side plate 35; the upper part of the rear of the sowing suppression system side plate 35 is rotatably connected to a hydraulic cylinder connection block 33 which is laterally placed along the center axis; the cylinder body of the hydraulic cylinder 34 is hinged to the upper part of the rear of the suppression roller connection side plate 32, and the piston rod of the hydraulic cylinder 34 is clearance-fitted and penetrates the hydraulic cylinder connection block 33, and two springs are provided on the piston rod of the hydraulic cylinder 34 to clamp the hydraulic cylinder connection block 33 in the middle, and respective limiting structures are provided on the piston rod of the hydraulic cylinder 34 at the opposite ends of the two springs. The hydraulic cylinder 34 can drive the pressing roller 31 to rotate around the center of the hinge connection between the front end of the pressing roller connecting side plate 32 and the middle and lower part of the rear part of the sowing pressing system side plate 35 through the extension and contraction of the piston rod.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A clay grain seeder, comprising a rotary tillage system (2) and a sowing and suppression system (1) arranged at the front and rear; the sowing and suppression system (1) comprises two sowing and suppression system side plates (35) arranged vertically and parallel to each other and spaced opposite to each other, and a furrowing system, a sowing system, and a suppression system arranged at the front and rear; The furrowing system comprises a laterally flat soil pressing roller (11), wherein the soil pressing roller (11) is rotatably connected between two sowing and pressing system side plates (35); The pressing system comprises a horizontally placed pressing roller (31), wherein the pressing roller (31) is rotatably connected to the lower part of the rear part of two longitudinally placed vertically parallel and spaced opposite pressing roller connecting side plates (32); Features: A plurality of convex rings (12) coaxial with the central axis of the soil pressing roller (11) are arranged at intervals on the outer wall of the soil pressing roller (11); the plurality of convex rings (12) are evenly spaced at intervals on the horizontal direction; A soil covering device is provided between the sowing system and the suppression system, the soil covering device comprising a soil covering knife shaft (14) and a plurality of soil covering knife discs; the soil covering knife shaft (14) is horizontally placed and rotatably connected between two sowing suppression system side plates (35); the plurality of soil covering knife discs are arranged at intervals on the outer wall of the soil covering knife shaft (14) and on both sides of the convex ring (12); the soil covering knife disc comprises a plurality of spiral blades (16) arranged circumferentially along the outer side of the soil covering knife shaft (14).

2. The clay grain seeder according to claim 1, characterized in that: The number of spiral blades (16) on the soil covering cutter disc is 2 to 8.

3. The clay grain seeder according to claims 1-2, characterized in that: A feather-shaped protective cover (17) is provided on the outer side of the soil covering device. The feather-shaped protective cover (17) includes a plurality of soft skins (171) and a plurality of soft skin support tubes (172). The soft skins (171) are in the shape of long strips and are arranged horizontally. The plurality of soft skins (171) are stacked end to end to form a protective cover with an opening facing downward, surrounding the soil covering blade disc, and having a semicircular longitudinal section. The rear outer wall of a front soft skin (171) is stacked from the inside with the middle and rear inner wall of the adjacent soft skin (171) behind. The soft skin support tubes (172) are horizontally laid flat, with both ends fastened between two sowing and suppression system side plates (35). The front outer wall of the soft skin (171) is fixedly connected to the soft skin support tubes (172) at corresponding positions.

4. The clay grain seeder according to claim 3, characterized in that: The pressing roller (31) is adjusted by a pressing pressure regulating system.

5. The clay grain seeder according to claim 4, characterized in that: The suppression pressure regulating system comprises two hydraulic regulating units; the hydraulic regulating unit comprises a hydraulic cylinder (34) with a longitudinal central axis; the front end of the suppression roller connecting side plate (32) is hingedly connected to the middle and lower part of the rear part of the sowing suppression system side plate (35); the upper part of the rear part of the sowing suppression system side plate (35) is rotatably connected to a hydraulic cylinder connecting block (33) horizontally placed on the central axis; the cylinder body of the hydraulic cylinder (34) is hingedly connected to the upper part of the rear part of the suppression roller connecting side plate (32), and the piston rod of the hydraulic cylinder (34) is connected to the hydraulic cylinder connecting block (33); the hydraulic cylinder (34) can drive the suppression roller (31) to rotate around the center of the hinge connection between the front end of the suppression roller connecting side plate (32) and the middle and lower part of the rear part of the sowing suppression system side plate (35) through the extension and retraction of the piston rod.

6. The clay grain seeder according to claim 5, characterized in that: The piston rod of the hydraulic cylinder (34) is loosely fitted and penetrates the hydraulic cylinder connecting block (33); two springs are provided on the piston rod of the hydraulic cylinder (34) to sandwich the hydraulic cylinder connecting block (33); and respective limiting structures are provided on the piston rod of the hydraulic cylinder (34) at opposite ends of the two springs.

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