RU218756U1 - Oscillating needle harrow-hoe - Google Patents

Abstract

The utility model relates to agricultural engineering, in particular to structures for surface treatment of stubble agrobackground with the preservation of plant residues on the field surface and can be used in agriculture.

In an oscillating needle harrow-hoe, the main frame and the battery frame are kinematically connected by conical springs, which allow creating a complex oscillatory-vortex effect on the stubble agrobackground, which helps to reduce traction resistance, while the tip of the disc needle has a hyperbolic section, which ensures better contact of weed seeds due to a smooth entry into the soil with the soil without damaging them, which increases their germination rate.

Description

The utility model relates to agricultural engineering, in particular to structures for surface treatment of stubble agrobackground with the preservation of plant residues on the field surface and can be used in agriculture.

A section of batteries of a needle harrow-hoe BMSh-20 is known (Textbook by the author Khovansky V.M. and Gorbachev I.P. "Agricultural machines" M .: "Spike since 2006 p 93"), including a battery frame, axle, spacers, bearings and disks.

The disadvantage of such a harrow-hoe is the increased traction resistance due to the hard wedge effect (friction) on the soil.

Known rotary needle harrow (Russian patent 2704453).

The disadvantage of such a harrow is the complexity of the design, as well as increased traction due to the hard wedge effect (friction) on the soil.

The objective of the proposed utility model is to reduce traction resistance and improve the quality of incorporation of intact weed seeds into the soil, combined with a simple design that ensures the durability of the machine.

EFFECT: improving the quality of tillage by reducing traction resistance and improving the quality of sowing undamaged weed seeds into the soil.

This is achieved by the fact that in an oscillating needle harrow-hoe, including the main frame, battery frame, disks with needles assembled into batteries, the main frame and the battery frame are kinematically connected by conical springs, which allows you to create a complex oscillatory-vortex effect on the stubble agrobackground and helps to reduce traction resistance, while the tip of the needle of the disk has a hyperbolic section, which, due to the smooth entry into the soil, provides better contact of weed seeds with the soil without damaging them, which increases their percentage of germination.

The proposed utility model is illustrated with illustrations.

In FIG. 1 shows an oscillating needle harrow-hoe (top view), in Fig. 2 is a front view of the tip of the harrow needle (hyperbalic section), in FIG. 3 three degrees of freedom of the harrow needle: forward movement along the OX axis, oscillation along the OY axis and around the OZ axis.

The oscillatory needle harrow-hoe includes (Fig. 1) the main frame of the battery 1, the frame of the section 2, the axles (two) 3 with spacer bushings 4, the bearings (four) 5, the disks 6 with needles 7, assembled into a battery in two rows. The section frame 2 is connected to the main frame 1 by conical springs 8 (four pieces at the corners of the battery frame).

The device works as follows.

When the harrow-hoe moves along the OX axis (forward across the field), the needles 7, fixed on the disks 6, penetrate into the stubble agrobackground to a depth of 80-100 mm and loosen the top layer. A week before harvest, weed seeds fall to the surface of the soil. During the movement of the hoe-harrow, the shed seeds of weeds are embedded in the soil and at the same time thread-like weeds are destroyed. In this case, the frame of section 2, due to the attachment to the main frame 1, by means of conical springs, carries out a complex oscillatory-vortex movement with needles (working bodies of the harrow-hoe).

Conical springs have certain advantages over coil springs: a greater compression stroke for the same free length as a coil spring, while the conical spring is less prone to lateral break. The combination of these advantages of a conical spring over a cylindrical one creates an enhanced oscillatory-vortex effect in the vertical and horizontal planes, which ensures better planting of weed seeds into the soil.

A complex oscillatory-vortex motion provides elastic and frictional effect of the needles on the soil, which helps to reduce the traction resistance of the hoe by 8-10%, increase productivity and reduce fuel and energy costs per unit of cultivated area.

The hyperbolic cross-section of the needle tip provides a smoother entry into the soil without damaging the weed seeds, which contributes to better contact of the weed seeds with the soil. This increases the percentage of germination of weed seeds, which ensures a more complete cleaning of the field from weeds after subsequent plowing.

Claims (1)

An oscillatory needle harrow-hoe, including a main frame, a battery frame, disks with needles assembled into batteries, characterized in that the main frame and the battery frame are kinematically connected by conical springs, while the tip of the disk needle has a hyperbolic section.

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