Strip tillage high-efficiency soil breaking unit

Abstract

A strip cultivation efficient soil breaking unit belongs to agricultural machinery; the coaxial cutter holder plates are respectively fixed on the center parts of the inner wall surfaces of the two relatively inclined notch disc coulters; n cutter shafts are uniformly fixed on the same diameter part of the cutter holder plate in the circumferential direction; the sawtooth type soil breaking cutter is coaxially and reciprocally swingably sleeved on the cutter shaft; the limiting columns equal in number to the cutter shafts are uniformly fixed on the same diameter part of the cutter holder plate and located at the inner part of the sawtooth type soil breaking cutter; the limiting columns are in contact or disengagement contact with the corresponding sawtooth type soil breaking cutter; the tooth height, the tooth spacing and the tooth tip angle of the sawtooth type soil breaking cutter are 13mm, 10mm and 35°; the unit has unique structure, saves labor, is high in efficiency, good in quality, low in power consumption and high in applicability, and provides technical support for the popularization and application of the protective strip cultivation technology.

Description

Technical Field

[0001] This invention belongs to agricultural machinery and mainly relates to a high-efficiency soil-breaking unit suitable for strip tillage operations. Background Technology

[0002] Strip tillage is an important implementation of conservation tillage technology, falling under the category of reduced tillage. It is unaffected by residual crop residue on the surface, creating a cleared surface as a seedbed for sowing, and moving any remaining crop residue between the seedbeds to protect the soil. Currently, related machinery is mainly passive, single-unit strip tillage machines, completing the strip tillage task in a single operation. However, years of practical experience have shown that existing strip tillage units are inadequate in soil fragmentation and disturbance, failing to meet the requirements of strip tillage operations. Therefore, designing a strip tillage machine with highly efficient soil fragmentation capabilities is essential to improve soil breakup rates and reduce operational resistance during strip tillage. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of current strip tillage operations, to develop and design a new type of high-efficiency soil-breaking unit for strip tillage, so as to adapt to and meet the requirements of strip tillage, achieve good soil breaking effect, low operating resistance, high degree of versatility, strong adaptability, and provide technical support for the promotion and application of conservation tillage technology.

[0004] The purpose of this invention is achieved as follows: Two notched disc plow blades, arranged at relative angles in the plow assembly, have blade holder plates fixedly mounted on their inner walls, coaxial with the blades. On the same diameter portion of each blade holder plate, n blade shafts are evenly distributed and fixed along the circumferential direction. A serrated soil-crushing blade is circumferentially reciprocating and fitted onto the blade shafts. On the same diameter portion of each blade holder plate, located inside the serrated soil-crushing blade, a number of limiting posts, equal in number to the number of blade shafts, are evenly distributed and fixed along the circumferential direction. These limiting posts and the corresponding serrated soil-crushing blades are either in contact or disengaged contact engagement, thus forming a highly efficient soil-crushing unit for strip tillage.

[0005] This invention creates a serrated soil-crushing blade that can be circumferentially oscillating and positioned on the inner wall of two notched disc plow blades arranged at a relatively inclined position in a traditional notched disc plow assembly. This is achieved through a blade holder plate, blade shaft, and limiting post. During operation, the serrated teeth on the serrated soil-crushing blade perform a sawing and crushing operation on the soil. Furthermore, the shape and structural dimensions of the serrated teeth are designed based on the biomimetic design of the spiny digging feet of the mole cricket. This is an original invention with the characteristics of novel, unique, simple, and reasonable structure, labor-saving soil crushing, high soil crushing efficiency, good soil crushing quality, low power consumption, strong applicability, and high degree of versatility. It provides technical support for the large-scale promotion and application of conservation strip tillage technology. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency soil-breaking unit for strip tillage.

[0007] Figure 2 yes Figure 1 A partial view from center A;

[0008] Figure 3 yes Figure 2 BB view;

[0009] Figure 4 yes Figure 3 The left view;

[0010] Figure 5 This is a schematic diagram of the tool holder plate structure;

[0011] Figure 6 This is a schematic diagram of a serrated soil-breaking blade structure.

[0012] Part number description in the image:

[0013] 1. Single frame; 2. Press roller assembly; 3. Notched disc plow blade assembly; 3-1. Notched disc plow blade; 3-2. Serrated tooth soil crushing blade; 3-2-1. Serrated tooth; 3-3. Limiting post; 3-4. Blade shaft; 3-5. Blade holder plate; 4. Straw clearing wheel assembly; 5. Corrugated disc plow blade assembly; 6. Parallel four-bar linkage. Detailed Implementation

[0014] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. A strip tillage high-efficiency soil-breaking unit includes a unit frame 1. A parallel four-bar linkage 6 is installed on the front end of the unit frame 1. A corrugated disc plow assembly 5, a straw-clearing wheel assembly 4, a notched disc plow assembly 3, and a press roller assembly 2 are sequentially installed from front to back on the lower side of the unit frame 1. Blade holder plates 3-5 are fixedly mounted on the center of the inner wall of the two notched disc plow blades 3-1 arranged relatively inclined on the notched disc plow assembly 3, coaxial with the notched disc plow blades 3-1. On the same diameter portion of the cutter holder plate 3-5, n cutter shafts 3-4 are evenly distributed and fixed along the circumferential direction. The serrated soil-crushing blades 3-2 are circumferentially reciprocating and fitted onto the cutter shafts 3-4. On the same diameter portion of the cutter holder plate 3-5, located inside the serrated soil-crushing blades 3-2, a number of limiting posts 3-3, equal in number to the cutter shafts 3-4, are evenly distributed and fixed along the circumferential direction. The limiting posts 3-3 and the corresponding serrated soil-crushing blades 3-2 are in contact limiting engagement or disengaged contact engagement. The serrated teeth 3-2-1 on the serrated soil-crushing blades 3-2 have a tooth height H of 13mm, a tooth spacing L of 10mm, and a tooth tip angle α of 35°.

[0015] During operation, the unit is connected and installed on the strip tillage machine frame using a parallel four-bar linkage 6. Moving forward, under the resistance of the ground soil and straw, the rolling corrugated disc plow assembly 5, the straw clearing wheel assembly 4, the notched disc plow assembly 3, and the press roller assembly 2 sequentially perform the first soil breaking, straw clearing, second soil breaking, and ridge compaction operations. During the second soil breaking operation of the rolling notched disc plow assembly 3, simultaneously with the notched disc plow blade 3-1 breaking the soil, the serrated blade 3-2, rotating as a whole with the notched disc plow blade 3-1, performs forced sawing-type soil breaking on the soil inside the two relatively inclined notched disc plow blades 3-1, significantly improving the quality and effect of soil breaking. The biomimetic serrated blade 3-2-1 reduces soil breaking resistance and power consumption. During operation, as the soil resistance changes, the serrated blade 3-2 can reciprocate around the blade shaft 3-4 on the blade holder plate 3-5 to adapt to different operating conditions and ensure the quality of operation. The contact between the serrated blade 3-2 and the limiting post 3-3 limits the extreme position, ensuring operational safety and effectiveness.

Claims

1. A strip tillage high-efficiency soil-breaking unit, comprising a unit frame (1), a parallel four-bar linkage (6) installed on the front end of the unit frame (1), and a corrugated disc plow assembly (5), a straw-clearing wheel assembly (4), a notched disc plow assembly (3), and a press roller assembly (2) sequentially installed from front to back on the lower side of the unit frame (1), characterized in that: On the inner wall center of the two notched disc plow blades (3-1) of the notched disc plow blade assembly (3) which are relatively inclined, respectively, blade holder plates (3-5) are fixedly mounted coaxially with the notched disc plow blades (3-1). On the same diameter part of the blade holder plate (3-5), n blade shafts (3-4) are evenly distributed and fixed along the circumferential direction. The serrated tooth-type soil crushing blade (3-2) is circumferentially reciprocating and fitted onto the blade shaft (3-4). On the same diameter part of the blade holder plate (3-5), located inside the serrated tooth-type soil crushing blade (3-2), the number of limiting posts (3-3) is evenly distributed and fixed along the circumferential direction, equal to the number of blade shafts (3-4). The limiting posts (3-3) are in contact limiting fit or disengagement fit with the corresponding serrated tooth-type soil crushing blade (3-2).

2. The strip tillage high-efficiency soil-breaking unit according to claim 1, characterized in that: The tooth height H of the sawtooth tooth (3-2-1) on the sawtooth tooth-type soil crushing blade (3-2) is 13mm, the tooth spacing L is 10mm, and the tooth tip angle α is 35°.

Images