The plowshare of a infinitely adjustable single-furrow plow

Abstract

A continuously variable steering single-furrow plowshare is disclosed. The plowshare is a four-bar linkage mechanism including front and rear connecting plates, and consists of two parallel rods with a fixed length of 690±10mm. When the plowshare is connected to the tractor, a length that is too long will cause the tractor to veer off course; a length that is too short will result in insufficient row spacing. This invention changes the traditional structure of plowshares, which have relied on naturally occurring wood profiles or modern metal plowshares mimicking the length of wooden plowshares. The fixed-length plowshare, when installed on any horsepower tractor, will not cause ridge deviation or crossing of rows. The rear plow frame of this continuously variable steering single-furrow plowshare contains a counterweight made of sand and gravel within its square steel cavity. This counterweight solves the problem of the plowshare being front-heavy and rear-light, causing the plowshare to gradually lift up during tilling and resulting in shallower tillage. The plowshare structure of this continuously variable steering single-furrow plowshare is rationally designed. Using a single-furrow plow with this plowshare has significant social and economic benefits.

Description

Technical Field

[0001] This utility model relates to an agricultural machine, and in particular to the plow shaft of a stepless directional single-furrow plow for an energy-saving and efficient stubble-removing and ridging machine. Background Technology

[0002] Chinese Patent Application No. 200720094038.5 discloses a stepless directional single-furrow plow for an energy-saving and efficient stubble-forming and ridging machine. This stepless directional single-furrow plow follows the centuries-old manual operation method, requiring a full round trip to create a single ridge. With technological advancements, this stepless directional single-furrow plow has evolved to its current fourth-generation version, requiring only one forward movement to create a ridge and achieving a high seedling emergence rate. In practical use, the fourth-generation infinitely adjustable single-furrow plow revealed the following issues: With fixed ridge spacing and a fixed tractor wheel track, if the plowshare is too long, it can cause two problems: first, it may bump into the operator, causing injury; second, when the plowshare is turned to a slightly larger angle, the force of the plowshare on the tilling point is on the outside of the wheels, causing the tractor to veer to the left or right, especially on steep slopes, where it can even cause the tractor to overturn. If the plowshare is too short, the ridge spacing is insufficient, and there is not enough space to accommodate the stubble trimmer. In addition to these problems, it was also found that during tilling, the plowshare sometimes gradually lifts up automatically, resulting in shallower ridges. Both of these issues disrupt the normal operation of the infinitely adjustable single-furrow plow. Therefore, it is urgent to find the cause of the tractor veering off course or the shallow ridge depth. Fortunately, after years of in-depth research and field experience, the problem was identified. Utility Model Content

[0003] The purpose of this invention is to solve the problems of tractor deviation or shallower plowing depth that occurred during the development of infinitely oriented single-furrow plows from two-stage ridging to one-stage ridging. The invention provides a plow shaft for an infinitely oriented single-furrow plow that ensures the tractor does not deviate from its path while moving along the furrow and that the plowing depth remains consistent.

[0004] The objective of this utility model can be achieved. The plowshare of this utility model's infinitely adjustable single-furrow plow includes a plowshare soil entry adjuster, a plowshare steering adjuster, a plowshare, and a rear plow frame. The plowshare of this utility model's infinitely adjustable single-furrow plow is characterized by: two plowshares arranged side-by-side; the rear parts of the two plowshares are connected to the rear connecting frame via two rear adapter shafts, and the front parts of the plowshares are connected to the front connecting frame via two front adapter shafts. The two plowshares, two rear adapter shafts, two front adapter shafts, the rear connecting frame, and the front connecting frame form a parallel four-bar linkage mechanism. The plowshare is a long rod of the parallel four-bar linkage mechanism with a fixed dimension of 690±10mm.

[0005] The present invention relates to a plowshare of a stepless directional single-furrow plow, wherein the rear plow frame is made of square steel tubes, and the inner cavity of the square steel tubes is filled with a plowshare depth counterweight made of sand and gravel.

[0006] The plowshare of this infinitely oriented single-furrow plow differs from existing technologies in that its two plowshares, together with the front and rear connecting plates, form a four-bar linkage. The plowshares are parallel long rods, and their length is a fixed value determined through long-term use and experimentation: 690±10mm. Any plowshare of any other length connected to the tractor will cause agricultural malfunctions if it is too long or too short. This infinitely oriented single-furrow plowshare changes the traditional structure of plowshares, which have been made from naturally formed wood or by modern metal plowshares imitating the length of wooden plowshares. This fixed-length plowshare will not cause the tractor to deviate from its course even when installed on a low-horsepower tractor. The rear plow frame of this infinitely oriented single-furrow plowshare contains a counterweight made of sand and gravel within its rear plowshare cavity. This counterweight solves the problem of the plowshare being top-heavy and the rear-light, causing the plowshare to gradually lift and resulting in shallower tillage depth. The plowshare structure of this infinitely oriented single-furrow plow is rationally designed. Nearly twenty years of use have proven that this infinitely adjustable single-furrow plow has enormous social and economic benefits.

[0007] The plowshare of the stepless directional single-furrow plow of this utility model will be further described below with reference to the accompanying drawings. The accompanying drawings are only schematic illustrations of the basic structure of this utility model, and therefore only show the structures relevant to this utility model. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the main structure of the plow shaft of the infinitely adjustable single-furrow plow of this utility model.

[0009] Figure 2 This is a top view schematic diagram of the plow shaft structure of the infinitely adjustable single-furrow plow of this utility model.

[0010] In the diagram: 1. Plowshare entry adjuster, 2. Rear adapter shaft, 3. Rear connecting frame, 4. Plowshare steering adjuster, 5. Plowshare shaft, 6. Front connecting frame, 7. Front adapter shaft, 8. Rear plow frame. Detailed Implementation

[0011] 1. For example Figure 1As shown, the plowshare of this utility model of a stepless steering single-furrow plow was achieved through years of experience and numerous dimensional verifications. The plowshare of this utility model includes a plowshare entry adjuster 1, a plowshare steering adjuster 4, a plowshare 5, and a rear plow frame 8. There are two plowshares 5 arranged side-by-side, with their rear ends connected to a rear connecting frame 3 via two rear adapter shafts 2. The front ends of the plowshares 5 are connected to a front connecting frame 6 via two front adapter shafts 7. The two plowshares 5, the two rear adapter shafts 2, the two front adapter shafts 7, the rear connecting frame 3, and the front connecting frame 6 constitute a parallel four-bar linkage mechanism. The plowshare is a parallel four-bar linkage with a fixed length of 690±10mm. When a stepless steering single-furrow plow with a plowshare manufactured to a length of 690±10mm is connected to a small-horsepower tractor, the tractor will not experience any deviation from the designated ridge.

[0012] like Figure 2 As shown, the rear plow frame 8 is constructed of square steel tubing, and the inner cavity of the square steel tubing is filled with a counterweight made of sand and gravel to ensure the plowshare depth remains constant during operation.

[0013] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A plowshare of a stepless directional single-furrow plow, comprising a plowshare soil entry adjuster (1), a plowshare steering adjuster (4), a plowshare (5), and a rear plow frame (8), characterized in that: The plowshares (5) are arranged in two parallel sections. The rear of the two plowshares (5) are connected to the rear connecting frame (3) through two rear adapter shafts (2). The front of the plowshares (5) is connected to the front connecting frame (6) through two front adapter shafts (7). The two plowshares (5), the two rear adapter shafts (2), the two front adapter shafts (7), the rear connecting frame (3), and the front connecting frame (6) constitute a parallel four-bar linkage mechanism. The plowshares are long rods of the parallel four-bar linkage mechanism with a fixed size of 690±10mm.

2. The plowshare of the infinitely adjustable single-furrow plow according to claim 1, characterized in that: The rear plow frame (8) is made of square steel tubes, and the inner cavity of the square steel tubes is filled with a soil-penetrating weight made of sand and gravel.

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