CN104380861B - Maize at Seedling Stage pricks tooth-like loosing earth mechanism - Google Patents

Abstract

The barbed tooth type soil loosening mechanism at the seedling stage of corn belongs to agricultural machinery; the reference shaft is fixed on the elastic hanging frame assembly, the wheel disc is rotatably installed on the reference shaft, the eccentric cam is fixed on the reference shaft, and multiple The barring teeth are installed on the wheel disc, and the pulley is hinged on the inner end of the barring teeth. The pulley is in contact with the eccentric cam, and the pressure spring is fitted on the barring teeth. Contact fit, the overall outer contour of the eccentric cam is sequentially composed of a push arc surface, a near-rest arc surface, a far rest arc surface, an upper transition arc surface, a return arc surface and a lower transition arc surface; The device has a novel design, a reasonable overall structure, good soil loosening effect, high work efficiency, low work resistance, low power consumption, clean work and easy cleaning.

Description

Corn seedling tooth type loosening mechanism

technical field

The invention belongs to agricultural machinery, and mainly relates to a corn cultivator at the seedling stage.

Background technique

In order to maintain soil nutrients more effectively, increase yield and ensure the balance of soil income and expenditure, at the same time of cultivating the soil at the seedling stage of corn, it is necessary to cultivate and loosen the soil to improve the compensation of soil organic matter, and try to reduce the impact on the plow layer soil. The hazards of agitation, while avoiding the increase in energy consumption of high-power operations, to achieve high-precision effect operations. Most of the currently used intertillage machines at the seedling stage of corn use traditional bow hoes, plow bodies and subsoiling shovels, etc., and the operation quality and effect need to be improved.

Contents of the invention

The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and combine actual needs, to research and design a kind of corn seeding stage piercing tooth type soil loosening mechanism, by changing the soil loosening method, it can improve soil fertility recovery, ensure operation effect, and reduce operation resistance , The purpose of reducing power consumption.

The purpose of the present invention is achieved in that the tooth-piercing type loosening mechanism at the corn seedling stage includes an elastic hanging frame assembly, and a reference shaft is fixed on the bottom end of the elastic hanging frame assembly. The rotatable wheel is installed on the shaft, and the eccentric cam is fixed on the reference shaft; a plurality of teeth that can move radially and flexibly are evenly distributed and installed on the wheel, and a pulley is hingedly installed on the inner end of the bar. , the pulley is in contact with the eccentric cam, the pressure spring is sleeved on the barring teeth, the inner end of the pressure spring is axially positioned on the barring teeth, and its outer end is in contact with the wheel disc; the overall outer contour of the eccentric cam is sequentially It is composed of thrust arc surface, near-rest arc surface, far-rest arc surface, upper transition arc surface, return arc surface and lower transition arc surface, and is based on the center point O of the center hole of the eccentric cam. , the center point O of the thrust arc surface is the center point O, and the radius _R8 is 130 millimeters; the center point O9 of the near-rest arc surface is located at the intersection of ₁₀ millimeters below the center point O and 50 millimeters to the left, which Radius R ₉ is 80 mm; the center point O ₁₀ of the far rest arc surface is located at the intersection of 60 mm below the center point O and 120 mm to the left, and its radius R ₁₀ is 165 mm; the upper transition arc surface The center point O ₁₁ is located at the intersection point 15 mm to the right of the center point O and 4.6 mm above, and its radius R ₁₁ is 15 mm; the center point O ₁₂ of the return arc surface is located 224 mm to the right of the center point O and 45 mm below At the intersection point, its radius R ₁₂ is 200 mm; the center point O ₁₃ of the lower transition arc surface is located on the straight line 15 mm to the right of the center point O, and its radius R ₁₃ is 15 mm. The lower transition arc surface is respectively connected to The thrust arc surface is tangent to the return arc surface.

The invention is novel in design, reasonable in overall structure, good in loosening effect, high in work efficiency and strong in stability, can avoid the phenomenon of entanglement of grass and clay in field environment operations, has less power consumption, and is easy to clean when working with machines and tools, effectively improving field performance. The degree of mechanization of work.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the tooth type loosening mechanism at the seedling stage of corn;

Fig. 2 is a schematic diagram of the structure of the eccentric cam.

Description of part number in the figure:

1. Elastic hanging frame assembly 2, wheel disc 3, eccentric cam 4, bar teeth 5, pulley 6, pressure spring 7, reference shaft 8, thrust arc surface 9, near rest arc surface 10, far Rest arc surface 11, upper transition arc surface 12, return arc surface 13, lower transition arc surface 14, center hole

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

A kind of piercing tooth type soil loosening mechanism at the seedling stage of corn, comprising an elastic hanging frame assembly 1, a reference shaft 7 is fixed on the bottom end of the elastic hanging frame assembly 1, and the reference shaft 7 The rotatable installation wheel 2, the eccentric cam 3 is fixed on the reference shaft 7; a plurality of barring teeth 4 can be radially telescopically moved and evenly distributed on the wheel 2, on the end of the barring teeth 4 The pulley 5 is hingedly installed, and the pulley 5 is in contact with the eccentric cam 3. The pressure spring 6 is set on the barring tooth 4. The inner end of the pressure spring 6 is axially positioned on the barring tooth 4, and its outer end is in contact with the wheel disc. 2 contact fit; the overall outer contour of the eccentric cam 3 consists of a push arc surface 8, a near-rest arc surface 9, a far rest arc surface 10, an upper transition arc surface 11, a return arc surface 12 and a lower transition arc surface. The circular arc surface 13 is smoothly connected and constituted, taking the center point O of the center hole 14 of the eccentric cam 3 as a reference, the center of the arc surface ₈ of the thrust is the center point O, and the radius R is 130 millimeters; the near rest arc The center point O ₉ of the surface 9 is located at the intersection of 10 mm below the center point O and 50 mm to the left, and its radius R ₉ is 80 mm; the center point O ₁₀ of the far resting arc surface 10 is located 60 mm below the center point O , 120 mm to the left, the radius R ₁₀ is 165 mm; the center point O ₁₁ of the upper transition arc surface 11 is located 15 mm to the right of the center point O and 4.6 mm above the intersection, and the radius R ₁₁ is 15 mm mm; the center point O ₁₂ of the return arc surface 12 is located at the intersection point 224 mm to the right of the center point O and 45 mm below, and its radius R ₁₂ is 200 mm; the center point O _{13 of the lower transition arc surface 13} Located on a straight line 15 mm to the right of the center point O, its radius R ₁₃ is 15 mm, and the lower transition arc surface 13 is tangent to the push arc surface 8 and the return arc surface 12 respectively.

When loosening the soil, use the elastic hanging frame assembly 1 to randomly pull the overall device of the present invention on the cultivator, and simultaneously perform the loosening operation on both sides of the furrow in the field; the teeth 4 go deep into the soil, and the reaction force of the soil reaches the circumference The barring teeth 4 in the array drive the wheel disc 2 to rotate, and when the topmost barring tooth 4 moves to the bottom end, the pressure spring 6 always applies pressure to the barring tooth 4 equipped with the pulley 5, and at the same time keeps the stationary eccentric cam 3 Continue to give the reaction force of the teeth 4 matching the pulley 5, forcing the teeth 4 to elongate, causing them to plunge into the soil and stir. At the moment when the teeth 4 at the bottom end are about to leave the soil surface, the wheel 2 will The distance between the surface of the eccentric cam 3 and the inner wall of the wheel disc 2 is increased, so that the pressure spring 6 quickly returns to the relaxed state from the tensioned state, and the fast retraction of the piercing teeth 4 is maximized, and the piercing teeth 4 form a rapid toggle action on the soil. The effect and technical effect of cultivating loose soil are improved. And the clay and weeds entrained in the loosening process are removed from the wheel disc 2 and the teeth 4, so far the single circular loosening operation is completed.

Claims (1)

1. A kind of barbed tooth type soil loosening mechanism in corn seedling stage, comprises elastic hanging type frame assembly (1), it is characterized in that: fixed on the bottom end of described elastic hanging type frame assembly (1) The reference shaft (7) is installed, and the wheel disc (2) is rotatably installed on the reference shaft (7), and the eccentric cam (3) is fixed on the reference shaft (7); multiple teeth (4) can be radially stretched The moving uniform fit is installed on the wheel disc (2), and the pulley (5) is hingedly installed on the end of the barring teeth (4), and the pulley (5) is in contact with the eccentric cam (3). The spring (6) is fitted on the barring tooth (4), the inner end of the pressure spring (6) is positioned axially on the barring tooth (4), and its outer end is in contact with the wheel disc (2); the eccentric cam (3) The overall outer contour consists of the thrust arc surface (8), the near rest arc surface (9), the far rest arc surface (10), the upper transition arc surface (11), and the return arc surface (12) ) and the lower transition arc surface (13) are smoothly connected and constituted, taking the center point O of the center hole (14) of the eccentric cam (3) as a reference, the center of the thrust arc surface (8) is the center point O, and the radius R ₈ is 130 millimeters; The center point O ₉ of the circular arc surface at rest (9) is located at the intersection point of 10 millimeters below the center point O and 50 millimeters on the left, and its radius R ₉ is 80 millimeters; The center point O ₁₀ of the surface (10) is located at the intersection of 60 mm below the center point O and 120 mm to the left, and its radius R ₁₀ is 165 mm; the center point O ₁₁ of the upper transition arc surface (11) is located at the center point 15 millimeters to the right of O and 4.6 millimeters above the intersection, the radius R ₁₁ is 15 millimeters; the center point O ₁₂ of the return arc surface (12) is located at the intersection of 224 millimeters to the right of the center point O and 45 millimeters below the intersection, its Radius R ₁₂ is 200 millimeters; The center point O ₁₃ of described lower transitional arc surface (13) is positioned on center point O right side 15 millimeter direction straight line, and its radius R ₁₃ is 15 millimeters, and lower transition arcuate surface (13) They are respectively tangent to the thrust arc surface (8) and the return arc surface (12).