Ditching harrow for improving seeding row spacing precision of seeder

Abstract

The ditching harrow comprises a cross beam, a harrow handle is connected to the middle of the cross beam, a connecting sliding hole formed in the length direction of the cross beam is formed in the cross beam in a penetrating mode, a plurality of square sliding blocks are connected into the connecting sliding hole in a sliding mode, and a connecting shaft is arranged at the upper end of each square sliding block. The outer wall, extending out of the connecting sliding hole, of each connecting shaft is provided with an external thread, the upper end of each connecting shaft is in threaded connection with a tightening threaded sleeve, the lower end of each square sliding block is provided with a limiting disc, the lower end of each limiting disc is downwards provided with a connecting strip, and the lower end of each connecting strip is provided with olecranon-shaped rake teeth obliquely facing the rake handle. The device is used for improving the seeding row spacing precision, is simple, is simple and convenient to operate, and can freely adjust the row spacing according to requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural implements, in particular to a furrowing harrow which can improve the sowing row spacing accuracy of a seeder. Background Art

[0002] Rice is my country's basic staple food crop, and the main way to grow rice is by seedling transplanting. Rice seedling transplanting has high requirements for land quality. It not only requires a lot of water resources, but also has complex planting procedures, large workload, and high production costs. Yunnan has many mountains, few paddy fields, and most of the flat land with good resource conditions has been replaced by cash crops. The rice planting area is seriously insufficient, and the problem of food supply is prominent. In order to lay a solid strategic bottom line of "ensuring basic self-sufficiency in grains and absolute food security", Yunnan Agricultural University has created dryland rice planting technology. Dryland rice relies on sufficient natural precipitation conditions in the southern mountainous areas of Yunnan to grow in dryland. It does not require complex processes such as seedling raising, land preparation, field soaking, and pulping. It is simple to operate, has low production costs, is suitable for many areas, and has great planting potential. In 2023 and 2024, the dryland rice planting area in Yunnan Province has exceeded 800,000 mu.

[0003] The basic number of seedlings in the field is an important technical indicator to ensure high rice yields. Therefore, ensuring the row spacing for rice sowing is the key to stable and high rice yields. The traditional transplanting method mainly uses mechanical transplanting and manual transplanting, or the terrain is flat or there is a fixed frame line. The row spacing for planting can be roughly judged by the naked eye. With a little attention, the planting density of the seedlings can be guaranteed, and the technical requirements are low. Dryland rice is mainly sown with a pusher, and the seeder needs to be rolled back and forth on the land during sowing. Due to the small area of ​​dry land in mountainous areas, uneven land, large slopes, and irregular land shapes, it is difficult to control the sowing row spacing. In the past, when sowing, the row spacing was mainly judged by the naked eye. Due to the lack of effective reference objects and visual fatigue, the row spacing was wide or narrow, and the seedling hole spacing was very different, which seriously affected the field density and growth of rice, and the rice yield was unpredictable. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning tool for a hand-push type rotary seeder when sowing rice seeds, namely, a furrowing rake. The device is simple to manufacture, low in production cost, easy to operate, highly practical, and can freely adjust the row spacing according to demand. The furrowing rake is a matching tool developed for dryland rice sowing, so as to improve the precision and quality of dryland rice sowing.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a furrowing rake for improving the sowing row spacing accuracy of a seeder, comprising a crossbeam, a rake handle connected to the middle part of the crossbeam, a connecting slide hole arranged along the length direction of the crossbeam penetrating the crossbeam, a plurality of square sliders slidably connected in the connecting slide hole, a connecting shaft arranged at the upper end of each square slider, an outer wall of each connecting shaft extending out of the connecting slide hole is provided with an external thread, the upper end of each connecting shaft is threadedly connected with a tightening threaded sleeve, a limiting disk is arranged at the lower end of each square slider, a connecting strip is arranged downward at the lower end of each limiting disk, and an eagle-beak-shaped rake tooth inclined perpendicular to the crossbeam is arranged at the lower end of each connecting strip.

[0006] By adopting the above technical solution, when in use, the threaded sleeve is tightened according to the required row spacing to make the position of the hawk-beak rake teeth movable. After adjusting the row spacing, the threaded sleeve is tightened in the opposite direction so that the limit plate and the pressure ring cooperate to clamp the crossbeam and fix the position of the hawk-beak rake teeth. Then, the hawk-beak rake teeth can be dragged by the rake handle to draw grooves with equal row spacing in the field. When dragging and moving next time, the hawk-beak rake teeth at the edge are dragged along the grooves at the edge, and finally grooves with equal row spacing are formed in the field. When sowing, the roller is pushed along the grooves left by the furrowing rake when it moves. Since the spacing of the furrowing rake teeth is equal, the spacing of the grooves left by the furrowing rake when it is operated multiple times is also equal. Therefore, equal row spacing sowing can be easily achieved when the seeder is pushed.

[0007] The utility model is further configured as follows: an L-shaped limit baffle is downwardly arranged on one side of the cross beam close to the rake handle, and the lower side of the L-shaped limit baffle extends to the upper end of the hawk-beak-shaped rake teeth.

[0008] The utility model is further configured as follows: the lower side of the L-shaped limit baffle is an arc-shaped plate which is gradually inclined downward.

[0009] The utility model is further configured as follows: a pressure ring for pressing the crossbeam is arranged on the lower edge of each tightening threaded sleeve.

[0010] The utility model is further configured as follows: the outer side of each tightening threaded sleeve is provided with two ears which are arranged opposite to each other.

[0011] In summary, the utility model has the following beneficial effects:

[0012] First, the utility model uses eagle-beak-shaped rake teeth with equal spacing to drag in the field to form furrows with relative row spacing. When sowing, the roller can be pushed along the furrows to achieve equal row spacing sowing, thereby ensuring the basic density of rice seedlings in the rice field;

[0013] Secondly, the utility model can also freely adjust the spacing between the hawk-beak-shaped rake teeth according to actual sowing needs, thereby realizing the adjustment of the sowing row spacing to meet different sowing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 Used to demonstrate the connection between the fixed eagle-beak type rake teeth and the crossbeam.

[0016] In the figure: 1, crossbeam; 11, connecting sliding hole; 2, rake handle; 3, square slider; 31, connecting shaft; 32, limit plate; 33, connecting strip; 34, eagle-beak type rake tooth; 4, tightening threaded sleeve; 41, pressure ring; 42, ear; 5, L-shaped limit baffle. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, see Figure 1-2 A furrowing rake for improving the sowing row spacing accuracy of a seeder comprises a crossbeam 1, a rake handle 2 is connected to the middle part of the crossbeam 1, a connecting slide hole 11 is provided along the length direction of the crossbeam 1 from top to bottom, a plurality of square sliders 3 are slidably connected in the connecting slide hole 11, so that they can only slide in the connecting slide hole 11 but cannot rotate, a connecting shaft 31 is provided at the upper end of each square slider 3, and an outer wall of each connecting shaft 31 extending out of the connecting slide hole 11 is provided with an external thread, a tightening thread sleeve 4 is threadedly connected to the upper end of each connecting shaft 31, a pressure ring 41 for pressing the crossbeam 1 is provided at the lower end edge of each tightening thread sleeve 4, and two ears 42 are provided on the outer side of each tightening thread sleeve 4, and the tightness of the square slider 3 relative to the crossbeam 1 is adjusted by rotating the tightening thread sleeve 4.

[0021] A circle of limiting plates 32 are provided at the lower end of each square slider 3, and the limiting plates 32 cooperate with the pressure ring 41 to clamp the crossbeam 1. A connecting strip 33 is provided downwardly at the lower end of each limiting plate 32, and an eagle-beak-shaped rake tooth 34 inclined toward the direction of the rake handle 2 is provided at the lower end of each connecting strip 33. An L-shaped limiting baffle 5 is provided downwardly on one side of the crossbeam 1 close to the rake handle 2, and the lower side of the L-shaped limiting baffle 5 extends to the upper end of the eagle-beak-shaped rake tooth 34. The lower side of the L-shaped limiting baffle 5 is an arc-shaped plate that gradually tilts downward, which is used to limit the depth of the eagle-beak-shaped rake tooth 34 inserted into the soil to prevent it from being inserted too deep into the soil and difficult to drag.

[0022] Usage: When in use, according to the required row spacing, turn and tighten the threaded sleeve 4 to make the position of the hawk-beak rake teeth 34 movable. After adjusting the row spacing, reversely tighten the threaded sleeve 4 to make the limit plate 32 and the pressure ring 41 cooperate to clamp the crossbeam 1 and fix the position of the hawk-beak rake teeth 34. Then, you can hold the rake handle 2 and drag the hawk-beak rake teeth 34 to draw grooves with equal row spacing in the field. The next time you drag and move, drag the hawk-beak rake teeth 34 at the edge along the grooves at the edge, and finally form grooves with equal row spacing in the field. When sowing, push the roller to push along the grooves to achieve equal row spacing sowing.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A furrowing harrow for improving the row spacing accuracy of a seeder, comprising a crossbeam (1), a harrow handle (2) being connected to the middle of the crossbeam (1), and characterized in that: A connecting sliding hole (11) is provided through the cross beam (1) along its length direction. A plurality of square sliding blocks (3) are slidably connected in the connecting sliding hole (11). A connecting shaft (31) is provided at the upper end of each square sliding block (3). The outer wall of each connecting shaft (31) extending out of the connecting sliding hole (11) is provided with an external thread. The upper end of each connecting shaft (31) is threadedly connected with a tightening threaded sleeve (4). A limiting plate (32) is provided at the lower end of each square sliding block (3). A connecting strip (33) is provided downward at the lower end of each limiting plate (32). The lower end of each connecting strip (33) is provided with an eagle-beak-shaped rake tooth (34) inclined toward the rake handle (2).

2. A furrowing harrow for improving the sowing row spacing accuracy of a seeder according to claim 1, characterized in that: An L-shaped limit baffle (5) is arranged downwardly on one side of the crossbeam (1) close to the rake handle (2), and the lower edge of the L-shaped limit baffle (5) extends to the upper end of the hawk-beak-shaped rake tooth (34).

3. A furrowing rake for improving the sowing row spacing accuracy of a seeder according to claim 2, characterized in that: The lower side of the L-shaped limiting baffle (5) is an arc-shaped plate which gradually slopes downward.

4. A furrowing harrow for improving the sowing row spacing accuracy of a seeder according to claim 1, characterized in that: The lower end edge of each tightening threaded sleeve (4) is provided with a pressing ring (41) for pressing the crossbeam (1).

5. A furrowing harrow for improving the sowing row spacing accuracy of a seeder according to claim 1, characterized in that: The outer side of each tightening threaded sleeve (4) is provided with two ears (42) arranged opposite to each other.

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