RU224116U1 - Double disc seed drill coulter - Google Patents

Abstract

The utility model relates to agriculture. A double-disc opener for sowing agricultural crops contains a body, two disks - a guide and a driven one, sharpened along the outer circles, rolling bearings, a pipe for seeds, a pressure spring and a driver. The discs are offset relative to each other in the direction of travel, and therefore the point of contact and convergence of the discs lies on the circumference of the guide disc, which differs from its diameter by 3...7%. Self-cleaning of the opener is ensured, increasing the reliability of its operation, improving the quality of seed sowing and, consequently, increasing productivity when using one-size opener disks. 3 ill.

Description

The utility model relates to agricultural engineering, in particular to disc coulters for sowing grains, legumes and other crops.

A device is known (author of St. USSR No. 1676484, class A 01 C 7/20) that can plant seeds into the soil.

This opener contains a body of complex shape, a seed guide and two disks offset relative to each other in the direction of movement. Due to the lack of interaction between the disks, the design is prone to clogging with crop and plant residues, which leads to a decrease in the reliability of its operation.

The closest technical solution is the design of a double-disc opener (N.I. Klenin, V.A. Sakun. Agricultural and land reclamation machines. M.: Kolos, 1994, p. 222.225). Taken as a prototype.

This opener consists of a body; two disks of the same diameter, pointed along the outer circles and located at an acute angle to each other; two rolling bearings; reflective plate, also known as scraper; pipe for seeds; leash and pressure spring. As the coulter moves, the discs rotate and cut into the soil, forming a furrow into which the seeds are delivered. This design allows this opener to work on dense soils.

It should be noted that the above openers are prone to clogging with plant residues, which reduces the reliability of their operation, deteriorates the quality of sowing, and, consequently, leads to a decrease in the gross yield of agricultural crops. Periodic manual cleaning requires additional labor.

A device is known (patent No. 2171562 RU IPC A01C 7/20). This opener has a similar design, but differs in the use of discs of different diameters. Which leads to the need to purchase a larger range of consumable spare parts, which affects the economic performance of agricultural organizations.

The technical challenge is the ability to ensure self-cleaning of the opener, increasing the reliability of its operation, improving the quality of sowing, and, consequently, increasing productivity when using one-size opener disks.

The utility model is illustrated by drawings.

Figure 1 shows a double-disc opener, side view.

Figure 2 shows section A-A in Figure 1.

Figure 3 - section BB in figure 1.

The solution to the utility model is achieved by the proposed design of the opener, which contains a housing 1, two disks 2, sharpened along the outer circles and located at an acute angle to each other, rolling bearings 6, a pipe for seeds 3, a pressure spring 4 and a driver 5. Disks 2 have the same diameter , but their axes of rotation are shifted relative to each other along the direction of movement. As a result, the force for cutting through plant residues is concentrated on the front (guide) disk, while the second disk (driven) serves to open the groove. The rotation axes of the discs are located in the coulter body so that the discs converge in the front part, forming a wedge with an acute angle. The point of contact (convergence) of the discs lies on the circumference of the guide disc, which differs from its diameter by 3...7%, as a result of which disc slippage occurs at the point of contact of the discs, leading to the removal of adhering plant residues and soil, which ensures self-cleaning of the opener, leading to increased reliability its work, eliminating manual labor for additional cleaning, increasing productivity, improving the quality of sowing and increasing the gross harvest of agricultural crops. In addition, there is a reduction in the cost of servicing seeders, which has a positive effect on the economic condition of agricultural organizations.

The proposed design of the coulter allows it to be used in seeders with mechanical and pneumatic seeding apparatus.

Claims (1)

Double-disc opener for sowing agricultural crops, containing a housing, two disks - a guide and a driven one, sharpened along the outer circles, rolling bearings, a pipe for seeds, a pressure spring and a driver, characterized in that the disks are offset relative to each other in the direction of travel, due to than the point of contact and convergence of the disks lies on the circumference of the guide disk, which differs from its diameter by 3...7%.