RU221393U1 - Cultivator share - Google Patents

Abstract

The utility model relates to soil-cultivating machines, in particular to the working parts of cultivators.

The proposed working body of the cultivator contains a bolted connection with elastic bushings and elastic gaskets of the cultivator paw with an elastic stand fixed to the cultivator frame with a spring unit. At the ends of the wings of the cultivator paw, elastic rods are cantilevered, made in a logarithmic spiral, convex upward with an increasing radius vector from the point of attachment to the end of the spiral. The cut soil layer by the blades of the paw, passing along its surface, interacts with elastic rods made in a logarithmic spiral with the convex upward, exciting vibrations of the cultivator paw in the horizontal plane, ensuring coordination of the vibration frequency of the paw with the phases of chipping and destruction of the cultivated soil layer. The shape of the elastic rods, cantilever mounted on the wings of the cultivator paw, helps to increase the self-cleaning of the paw blades from crop residues and reduces the resistance of the soil leaving them.

The achieved technical result is to increase the durability of the blades of the cultivator paw, reduce the traction resistance of the cultivator, facilitate the removal of plant residues from the blades of the paw and coordinate the vibration frequency of the working body with the phases of deformation and destruction of the soil.

Description

The utility model relates to soil-cultivating machines, in particular to the working parts of cultivators.

The working body of the cultivator is known [RU patent for utility model No. 187398 U1, IPC A01B 35/22, 61/04; SPK A01V 35/22.61/04, published 03/04/2019], ensuring the performance of the cultivator on hard soils by increasing the durability of the working surfaces of the cultivator paw while simultaneously ensuring a reduction in the traction resistance of the cultivator and an increase in the quality of crumbling of the treated soil layer.

The disadvantage of the proposed utility model is the insufficient intensity of vibrations of the cultivator paw in the horizontal plane, which does not allow the periods of chipping and destruction of the cultivated soil layer to be coordinated with the frequency of vibration of the cultivator paw, which, in turn, does not sufficiently reduce traction resistance during soil cultivation.

A soil loosener was chosen as a prototype [RU patent for utility model No. 189762 U1, MPK A01B 35/24; SPK A01B 35/24, published 06/03/2019], its peculiarity is that rigid vertical cutting knives are rigidly fixed on the wings of the cultivator paw, which have a frontal profile of the cutting edge in the longitudinal-vertical plane in the shape of a logarithmic spiral, in order to provide additional loosening trimmed soil layer and stabilization of the working stroke of the cultivator paw in depth.

The disadvantage of the presented design is the absence of vibrations of the cultivator paw in the horizontal plane, due to the rigid fastening of rigid vertical cutting knives, which limits the ability to self-clean from crop residues and reduces the possibility of matching the frequency of vibration of the cultivator paw with the phases of deformation and destruction of the cultivated soil layer.

The technical result of the utility model is to increase the durability of the blades of the cultivator paw, reduce the traction resistance of the cultivator, facilitate the removal of plant residues from the blades of the paw and coordinate the oscillation frequency of the working body with the deformation phases of soil destruction.

The problem is solved as follows.

The cultivator paw contains a loosening paw mounted on a C-shaped elastic spring-loaded stand, by means of a bolted connection with elastic bushings and elastic spacers; on the wings of the right and left wings of the paw, elastic rods are vertically cantilevered, made in a logarithmic spiral, convex upward with an increase in the radius vector from places of attachment to the end of the spiral, with the elasticity ratio of the right and left rods equal to 2:1. The technical solution ensures coordination of the oscillation frequency of the working body with the deformation phases of soil destruction.

The general features of the prototype, which coincide with the essential features of the utility model, are:

- the presence of elastic elements connecting the paw to the stand and contributing to the occurrence of vibrations of the cultivator paw due to variable soil resistance,

Distinctive features are:

- elastic rods, made in a logarithmic spiral, convex upward with an increase in the radius vector from the point of attachment to the end, with the elasticity ratio of the right and left rods equal to 2:1.;

- the rods are fixed vertically in a cantilever on the wings of the right and left wings of the paw.

The essence of the utility model is illustrated by graphic material, where:

Fig. 1 - Cultivator paw mounted on an elastic stand (side view);

Fig. 2 - Fastening elastic rods on the wings of the cultivator paw (top view).

The cultivator paw contains (Fig. 1) the left 1 and the right wing 2 (shown in Fig. 2) of the cultivator paw, mounted on an elastic stand 3, by means of a bolted connection 4 with elastic bushings 5 and elastic spacers 6, a spring unit 7 that provides fastening of the elastic racks 3 on frame 8 of the cultivator. In the rear part of the cultivator paw, on wings 1 and 2, elastic rods 9 and 10 are cantilevered, made in a logarithmic spiral with the convex upward.

The device works as follows. During operation, the cultivator paw cuts the soil layer with the blades of the left 1 and right 2 wings, which, due to the variable soil resistance forces acting on the elastic rods, excite vibrations of the cultivator paw, which contributes to resistance to its advancement in the soil. Elastic rods 9 and 10 are made of hardened alloy steel 65G with the elasticity value of the left 9 and right 10 rods in a ratio of 2:1.

The cut soil layer, passing along its surface with the blades of the paw, interacts with elastic rods made in a logarithmic spiral with the convexity upward, exciting vibrations of the cultivator paw in the horizontal plane, ensuring coordination of the vibration frequency of the paw with the phases of deformation of soil destruction. The shape of the elastic rods, cantilevered onto the wings of the cultivator paw, facilitates the removal of plant residues from the paw blades.

Claims (1)

A cultivator paw containing a loosening paw mounted on a C-shaped elastic spring-loaded stand, by means of a bolted connection with elastic bushings and elastic spacers, characterized in that on the wings of the right and left wings of the paw, elastic rods are vertically cantilevered, made in a logarithmic spiral, convex upward with an increase in the radius vector from the point of attachment to the end of the spiral, with the elasticity ratio of the right and left rods equal to 2:1.

Images