Trench pressing and soil covering device of clay grain seeding machine

Abstract

The utility model discloses a clay grain seeder furrow pressing and soil covering device which comprises a furrowing system and a soil covering device, and a plurality of convex rings coaxial with the central axis of a soil pressing roller are transversely arranged on the outer wall of the soil pressing roller of the furrowing system at intervals; the soil covering device is arranged between the sowing system and the pressing system and comprises a soil covering cutter shaft and a plurality of soil covering cutter heads; the soil covering cutter shaft is horizontally arranged in the transverse direction and is rotationally connected between the two seeding and pressing system side plates; a plurality of soil covering cutter heads are transversely arranged on the outer wall of the soil covering cutter shaft at intervals and are arranged on the two sides of the convex ring; the soil covering cutter head comprises a plurality of spiral blades which are circumferentially arranged along the outer side of the soil covering cutter shaft. According to the utility model, the ditching quality is obviously improved, so that the seeding quality is ensured; when the soil covering device is used, the soil covering device basically cuts soil generated by ditching on the two sides of the ditches into the ditches through the spiral blades rotating on the soil covering cutter head, the thickness of the soil on the two sides of the ditches cannot be increased, and adverse effects on later seedling germination cannot be caused.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a soil pressing and covering device for a clay grain planter. Background Technology

[0002] A grain seeder performs rotary tillage at the front, followed by furrowing, sowing, and compaction at the rear. The grain seeder comprises a furrowing system, a sowing system, and a compaction system. Existing grain seeders' furrowing systems include horizontally spaced furrowing discs. Each furrowing disc consists of two vertically positioned, oppositely spaced discs arranged in a V-shape (the distance between the two discs is smaller at the front and larger at the back). During operation, the furrowing discs separate the rotary-tilled soil to form furrows. These furrows are relatively loose and prone to collapse under water pressure, especially in clay soils, where the separated clay may collapse into the newly opened furrows. This poor furrow quality negatively impacts sowing quality. Furthermore, the soil from the furrows partially covers the furrows and partially covers the seedbeds on either side, increasing the soil thickness on both sides of the furrows and adversely affecting subsequent seedling germination. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by proposing a soil pressing and covering device for a clay grain planter that can solve the aforementioned problems.

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

[0005] A soil covering and pressing device for a clay grain seeder includes a furrowing system, which includes a horizontally placed pressing roller rotatably connected between two side plates of a seeding and pressing system. The improvement lies in that: the outer wall of the pressing roller is laterally spaced with several convex rings coaxial with its central axis; these convex rings are evenly distributed laterally; a soil covering device is provided between the seeding system and the pressing system, comprising a soil covering blade shaft and several soil covering blade discs; the soil covering blade shaft is horizontally placed and rotatably connected between the two side plates of the seeding and pressing system; the several soil covering blade discs are laterally spaced on the outer wall of the soil covering blade shaft, positioned on both sides of the convex rings; each soil covering blade disc includes several spiral blades arranged circumferentially along the outer side of the soil covering blade shaft.

[0006] Furthermore, the number of spiral blades on the cover cutterhead is 2 to 8. Compared with the prior art, this utility model has the following positive effects:

[0007] 1. The furrowing system includes a horizontally placed pressing roller. Several convex rings, coaxial with the central axis of the pressing roller, are set horizontally at intervals on the outer wall of the pressing roller. During operation, the soil previously rotary tilled is initially rolled and furrows are pressed out through the convex rings. Since the furrows are pressed out by the convex rings, and the soil on both sides of the furrows is relatively compacted after the initial rolling, the furrowing quality is significantly improved. Even when used in clay soil, the furrowing quality can be guaranteed, thereby ensuring the sowing quality.

[0008] 2. During operation, the soil covering device can use the rotating spiral blades on the soil covering cutter disc to basically scrape all the soil generated on both sides of the trench into the trench, covering the sown seeds. It will not increase the soil thickness on both sides of the trench and will not have an adverse effect on the germination of seedlings later. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front to the back.

[0010] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from the back to the front.

[0011] Figure 3 for Figure 2 A cross-sectional schematic diagram.

[0012] Figure 4 for Figure 3 Enlarged schematic diagram of part I. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0014] Appendix Figures 1-4 The shown clay grain planter furrowing and covering device includes a furrowing system and a covering device.

[0015] The clay grain seeder includes a rotary tillage system 2 and a seeding and pressing system 1 arranged at the front and rear. The seeding and pressing system 1 includes two longitudinally arranged and parallel seeding and pressing system side plates 35 and a furrowing system, a seeding system, a soil covering device, and a pressing system arranged at the front and rear.

[0016] The trenching system includes a horizontally placed pressing roller 11, which is rotatably connected between two side plates 35 of the sowing and compaction system. The outer wall of the pressing roller 11 is provided with 16 (2 to 15 or more in other embodiments) convex rings 12 that are coaxial with the central axis of the pressing roller 11.

[0017] A soil covering device is provided between the sowing system and the compaction system. The soil covering device includes a soil covering blade shaft 14 and 36 soil covering blade discs (the number of soil covering blade discs is twice that of the convex ring 12). The soil covering blade shaft 14 is horizontally placed and rotatably connected between the two side plates 35 of the sowing and compaction systems. The 36 soil covering blade discs are horizontally spaced on the outer wall of the soil covering blade shaft 14 and are located on both sides of the convex ring 12 (one soil covering blade disc is provided on each side of each convex ring 12). The soil covering blade disc includes four spiral blades 16 arranged circumferentially along the outer side of the soil covering blade shaft 14 (in other embodiments, the soil covering blade disc includes two to three or five to eight spiral blades 16 arranged circumferentially along the outer side of the soil covering blade shaft 14).

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A soil pressing and covering device for a clay grain seeder, comprising a furrowing system, the furrowing system including a horizontally placed soil pressing roller (11), the soil pressing roller (11) being rotatably connected between two side plates (35) of the seeding and pressing system; characterized in that: The outer wall of the pressing roller (11) is provided with several convex rings (12) that are coaxial with the central axis of the pressing roller (11) at transverse intervals; the several convex rings (12) are evenly distributed at transverse intervals; a soil covering device is provided between the sowing system and the pressing system, the soil covering device includes a soil covering blade shaft (14) and several soil covering blade discs; the soil covering blade shaft (14) is horizontally placed and rotatably connected between the two side plates (35) of the sowing and pressing system; the several soil covering blade discs are arranged at transverse intervals on the outer wall of the soil covering blade shaft (14) and on both sides of the convex rings (12); the soil covering blade discs include several spiral blades (16) arranged circumferentially along the outer side of the soil covering blade shaft (14).

2. The soil covering and pressing device for a clay grain planter according to claim 1, characterized in that: The number of spiral blades (16) on the cover cutterhead is 2 to 8.

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