RU232835U1 - Paw coulter - Google Patents

Abstract

The utility model relates to agricultural engineering, namely to the working bodies of pneumatic seeders. The paw coulter includes a lancet paw attached to a stand, a seed duct, in the vertical part of which a conical divider is located and distribution seed ducts installed directly under it along the circumference. The technical result that can be achieved using the proposed utility model consists in uniform distribution of seeds in the under-paw space. The essence of the utility model: in the vertical part of the seed duct, a conical divider is installed, containing gutters made along the generatrix of the cone, wherein in the lower part the radius of the arc forming the base of the gutter is equal to the radius of the inner part of the distribution seed duct, the seed ducts of tubular cross-section located under it along the circumference exit into the under-paw space of the coulter and are located at the same distance relative to each other along the width of the paw. The proposed coulter, in comparison with known technical solutions, will allow seeds to be placed with high uniformity over the field area, which will ensure that the plant nutrition area approaches the optimal one.

Description

The utility model relates to agricultural engineering, namely to the working bodies of pneumatic seeders.

A paw-type opener is known, consisting of a tubular stand and a pointed paw attached to it, with a conical spreader fixed under the paw. (Khalansky V.M., Gorbachev I.V. Agricultural Machinery. - Moscow: KolosS, 2003, p. 162).

The disadvantage of this working element is that the distributor is made in the form of a cone and when the coulter is working, the largest number of grains will be sown in the central part of the furrow, thus, the distribution of seeds will not be uniform across the width of the coulter.

The closest in technical essence is the paw coulter (Patent of the Russian Federation No. 227840, IPC A01C 7/20, published on 07.08.2024, Bulletin No. 22), which contains a lancet paw, a seed tube, in the vertical part of which there is a conical divider and distribution seed tubes of tubular cross-section installed directly under it along the circumference, exiting into the under-paw space of the coulter and located at the same distance relative to each other along the width of the paw.

The disadvantage of this working element is that the seeds moving in the seed tube and falling on the conical distributor, which has a smooth surface, when the distributor oscillates together with the seed tube will shift under the action of inertial force away from its center, which will lead to uneven distribution of seeds across the width of the coulter.

The technical result that can be achieved with the help of the proposed utility model is the uniform distribution of seeds in the under-paw space.

The technical result is achieved by the fact that a conical seed flow divider is installed in the seed duct, under which tubular seed distribution ducts are installed, exiting into the under-paw space of the coulter and located at the same distance relative to each other along the width of the paw, while on the surface of the cone there are grooves along the cone generatrix, and in the lower part the radius of the arc forming the base of the groove is equal to the radius of the inner part of the distribution seed duct. The utility model is explained by drawings.

Fig. 1 shows a side view of a paw coulter with a local section in the longitudinal plane; Fig. 2 is a top view of a lancet paw with a local section; Fig. 3 is a view along section A-A; Fig. 4 is a conical divider with grooves, side view; Fig. 5 is a conical divider with grooves, isometric view.

Implementation of a utility model

The paw coulter (Fig. 1) consists of a lancet paw 1, attached with bolts to a stand 2, to which, in turn, a seed tube 3 is attached with a clamp, in the vertical part of which a conical divider 4 is located, while on the surface of the cone (Fig. 3) grooves 6 are made along the generatrix of the cone, and in the lower part the radius of the arc forming the base of the groove is equal to the radius of the inner part of the distribution seed tube, and distribution seed tubes 5 installed directly under it along the circumference. The angle at the top of the conical divider (Fig. 4) should be 40°, and the diameter of the distribution seed tube should be at least one and a half times the length of the grain.

The working process of the paw coulter is as follows: when the pneumatic seeder moves along the field surface, the working parts (paw coulters) are deepened to a given seeding depth and move inside the soil, forming the under-paw space. The seeds move inside the seed tube due to the aerodynamic force of the air flow created by the pneumatic system of the seeder. The sown material, falling on the conical divider located in the vertical part of the seed tube, forms a ring flow moving along the gutters made along the outer surface of the cone, while when the seed tube oscillates due to the seeder moving along the field surface, those parts of the seed flow that fell into the gutters move along their surface and fall into their distribution seed tube without shifting towards the neighboring distribution seed tubes and, thus, are transported into the under-paw space. The seed distribution tubes are located at equal distances from each other in the under-paw space along the paw width, while seeding is carried out with a fixed row spacing and high uniformity of seed distribution across the rows, which ensures that the plant nutrition area approaches the optimum.

Claims (1)

A paw-type opener, including a lancet paw, a stand, a seed duct, in the vertical part of which a conical seed flow divider is installed, under which distribution seed ducts of tubular cross-section are installed along the circumference, exiting into the under-paw space of the opener and located at the same distance relative to each other along the width of the paw, characterized in that the conical divider contains grooves made along the generatrix of the cone, and in the lower part the radius of the arc forming the base of the groove is equal to the radius of the inner part of the distribution seed duct.