RU2818118C1 - Cultivator working member - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to tillage machines. Cultivator working member contains a C-shaped elastic spring-loaded tine (1) with a thrust bearing and hoe blade (4) fixed on it by means of bolt joint (3) with disk springs (8). Nose part, left and right wings of hoe blade (4) are connected to thrust bearing of tine (1) by horizontally located elastic rod links. Rod links are made in the form of a logarithmic curve with a convexity directed opposite to the direction of movement of the working element. Bolt joint (3) is additionally equipped with elastic bushings (9).

EFFECT: reduced traction resistance and improved quality of soil treatment by the working member of the cultivator.

1 cl, 2 dwg

Description

The invention relates to tillage machines, in particular to the working parts of cultivators.

The working body of the KPE-3.8 cultivator is known, containing a pointed paw, rigidly fixed to an elastic C-shaped stand with bolts [Karpenko A.P., Khalansky V.M. Agreecultural machines. Agreecultural equipment. - 5th ed., revised. and additional - M.: Kolos, 1983. - 495 p.].

The disadvantages of the known working body are high traction resistance and unsatisfactory quality indicators of soil cultivation due to the fact that vibrations of the working body during its interaction with the soil occur only in the vertical plane due to the elastic properties of the stand, and due to the uneven distribution of soil hardness over the field area, these vibrations are unstable. In this case, on hard soils, the paw deepens from the soil, as a result of which the stability of its movement in depth deteriorates.

A soil loosener is known [Patent RU 189762 U1, IPC A01B 35/24 (2006.01), SPK A01B 35/24 (2018.08). - Publ.: 06/03/2019, Bull. No. 16], containing a frame with a hinged elastic C-shaped stand, a spring, a limit screw and a paw with vertical cutting knives at the ends of the paw wings. This technical solution ensures stabilization of the depth movement of the working body and additional loosening of the soil.

The disadvantage of the known soil loosener is its high traction resistance, since its mobility is ensured only in the vertical plane.

A known ripper paw [A.s. USSR SU 1243641 A1, MKI A01B 35/26, 13/08. - Publ.: 07/15/86, Bulletin. No. 26], containing a stand and shares hinged on it with a vibration-impact mechanism. This loosening paw improves the efficiency of soil crumbling.

The disadvantage of the known loosening paw is its high traction resistance, since the mobility of the shares is ensured only in the horizontal plane, and the maximum amplitude of their oscillations, which reduces the traction resistance, is achieved only at the free ends of the shares.

The working body of the cultivator was chosen as a prototype [Patent RU 187398 U1 MPK A01B 35/22, 61/04 (2006.01). - Publ.: 03/04/2019, Bulletin. No. 7], containing a stand with a thrust bearing rigidly connected to it at the bottom. The pointed foot is secured to the thrust bearing by means of a bolted connection and disc springs. Belleville springs provide mobility and the ability to oscillate the paw in the direction of movement of the cultivator.

The disadvantages of the prototype are the high traction resistance of the working body and insufficient crumbling of the soil due to the instability of the oscillations of the spring-loaded paw.

The technical result of the invention is to reduce traction resistance and improve the quality indicators of soil cultivation by the working body of the cultivator.

The working body of the cultivator contains a spring-loaded, hinged C-shaped elastic strut with a thrust bearing rigidly connected to it in the lower part. A paw is attached to the bottom of the rack by means of a bolted connection. Disc springs are installed between the stand and the paw at a bolted connection. The bolted connection is additionally equipped with elastic bushings. The nose part, the left and right wings of the paw are connected to the thrust bearing of the rack by horizontally located elastic rod links, made in the shape of a logarithmic curve with a convexity directed opposite to the direction of movement of the working element.

The features of the prototype, which coincide with the essential features of the invention, are the presence in the working body of the cultivator of a stand with a thrust bearing rigidly connected to it in the lower part and a pointed paw fixed to the stand in the lower part by means of a bolted connection with disc springs.

Distinctive essential features:

1. The nose part, the left and right wings of the paw are connected to the thrust bearing of the rack by horizontally located elastic rod links, made in the shape of a logarithmic curve with a convexity directed towards the back of the paw.

2. The bolted connection is additionally equipped with elastic bushings. The combination of essential features makes it possible to obtain the mobility of the cultivator’s working body simultaneously in the vertical and horizontal planes, which, when interacting with the soil, causes the occurrence of multidirectional vibrations of the paw and vibrations of the spring-loaded, hinged C-shaped elastic strut with a thrust bearing, which helps reduce traction resistance and improve the quality of soil cultivation working body of the cultivator, i.e. ensures the achievement of a technical result, which indicates that the technical solution meets the “inventive step” criterion.

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

Fig.1 - working body of the cultivator (side view);

fig. 2 - view A from Fig. 1.

The working body of the cultivator (Fig. 1, Fig. 2) contains a spring-loaded, hinged C-shaped elastic post 1 with a thrust bearing 2 rigidly connected to it at the bottom. A paw 4 with a nose part 5 is attached to the bottom of the post 1 by means of a bolted connection 3. left 6 and right 7 wings. Between the stand 1 and the paw 4, disc springs 8 are installed on the bolted connection 3 of the fastening. The bolted connection 3 is additionally equipped with elastic bushings 9. The nose part 5, the left 6 and right 7 wings of the paw 4 are connected to the thrust bearing by 2 horizontally located elastic rod links 10, made according to the shape of a logarithmic curve ƒ(x) with a convexity directed opposite to the direction of movement ν of the working body.

The working body of the cultivator functions as follows. When the tillage unit moves across the field in the direction ν (Fig. 1), the paw 4 is buried in the soil to the depth of its cultivation and carries out the technological process of cultivation. Due to the elastic rod links 10, made in the shape of a logarithmic curve ƒ(x) with a convexity directed opposite to the direction of movement ν of the working body, and elastic bushings 9, when the paw 4 interacts with the soil, vibration occurs in the horizontal plane of its nose part 5, left 6 and right 7 wings. At the same time, due to the disc springs 8, vibrations of the paw 4 in the direction v and vibrations of the hinged C-shaped elastic strut 1 with a thrust bearing 2 occur in the vertical plane. The combination of multidirectional vibrations of the paw 4 and vibrations of the hinged C-shaped elastic strut 1 with a thrust bearing 2 promotes self-cleaning of the working surfaces of the paw 4 from adhering soil with plant residues, increasing the degree of soil crumbling by the working body of the cultivator and reducing traction resistance.

There is the following cause-and-effect relationship between the set of essential features of the invention and the achieved technical result. The connection of the nose part, the left and right wings of the paw with the thrust bearing of the stand with horizontally located elastic rod links, made in the shape of a logarithmic curve with a convexity directed to the rear of the paw, and additional provision with elastic bushings for the bolted connection of the paw with a hinged C-shaped elastic strut with a thrust bearing. allows you to ensure the mobility of the cultivator's working body simultaneously in the vertical and horizontal planes, as a result of which, when interacting with the soil, it causes the occurrence of multidirectional vibrations of the paw and oscillations of the spring-loaded, hinged C-shaped elastic strut with a thrust bearing, which helps to reduce traction resistance and improve the quality indicators of soil cultivation by the working body cultivator.

Claims (1)

A working body of a cultivator containing a C-shaped elastic spring-loaded stand with a thrust bearing and a paw secured to it by means of a bolted connection with disc springs, characterized in that the nose part, the left and right wings of the paw are connected to the thrust bearing of the stand by horizontally located elastic rod links made in the shape logarithmic curve with a convexity directed opposite to the direction of movement of the working body, and the bolted connection is additionally equipped with elastic bushings.