SU1664128A1 - Plow bottom - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The purpose of the invention is to reduce energy consumption. The plow body has a stand 1, a ploughshare 2, a blade 4 and an additional knife 7, the blade 8 of which is located to the direction of movement at an opposite angle relative to the blade of the plowshare 2. The additional knife is installed at an angle β to the rack 1, the angle β being 60 - 80 °. The cutting angle of the additional knife at its end is less than the similar angle at its base, connected to the stand, by 5 - 15 °. During operation of the plow body, due to the mentioned values of the cutting angles of the additional knife and placing it under the angle β = 60 - 80 ° to the stand, the irregularity of load and resistance to cutting is reduced when the additional knife is buried in the soil, which reduces the energy capacity of the body. 1 hp ff, 5 ill.

Description

one

(21) 4491300/15

(22) 07.29.88

(46) 07.23.91. Bul №27

(71) Kuban Agricultural Institute

(72) S.M. Sidorenko (53) 631.316 (088.8)

(56) USSR Author's Certificate No. 898965. cl. A 01 B 15/18, 1980.

(54) CASE PLOW

(57) The invention relates to agricultural machinery. The purpose of the invention is to reduce energy consumption. The plow body has a stand 1, plowshare 2, a blade 4 and an additional knife 7, the blade 8 of which is located to the direction of movement under

an opposite angle with respect to the blade of the plowshare blade 2. The additional knife is set at an angle / to the stand 1, and the angle / is 60-80 °. The cutting angle of the additional knife at its end is less than the analogous angle at its base, connected to the stand, by 5-15 °. During operation of the plow body, due to the mentioned values of the angles of cutting of the additional knife and placing it at an angle of / 60-80 ° to the stand, the unevenness of the load and resistance to cutting when the additional knife penetrates into the soil, which reduces the intensity of the body. 1 h. n. f-ly, 5 ill.

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to plow bodies.

The purpose of the invention is to reduce energy consumption.

FIG. 1 shows a plow body, top view; in fig. 2 - the same, rear view; in fig. 3 shows sections A-A and B-B in FIG. 2; in fig. 4 - the position of the additional knife at the beginning of its penetration into the soil; in fig. 5 - the scheme of work of an additional knife.

The plow body includes a stand 1 and a plowshare 2 connected to it with a blade 3 deflected from the longitudinal axis by an angle а and a blade 4, a field board 5. A stand 6 is connected to a bracket 6, on which an additional knife 7 is attached with a straight blade 8 rejected in horizontal plane at an O2 angle (30 - 60 °) in the direction opposite to the deflection of the blade of the plowshare. The blade of the knife is located at an acute angle UZ to the rack. The angle value / is

60 - 80 °. At the same time, the working surface of the knife is helical (screw), and the cutting angle at the knife end y2 is less than the same angle yi at the base of the knife by 5-15 °.

The plow body works as follows.

An additional knife 7 is sunk into the side wall A of the furrow under the influence of the side reaction of the soil on the blade of the plowshare and the blade. Due to the fact that the knife is made helicoidal and the cutting angle at the base is more than the same angle at the knife end, the cut soil layer B rises at the wall of furrow A to a greater height than at the knife end 7, i.e. the cut soil layer B rotates in the direction of the arrow (see Fig. 5) and this layer is detached from the soil monolith in zone C, and the energy costs for the separation of layer B are reduced due to the fact that the resistance of the soil to shear and breakage is small compared to

ABOUT

about

four

S 00

resistance to compression. In the zone where the knife is inserted, cracks D appear in the soil, which contribute to the reduction of the plowing lumpiness.

When the difference in cutting angles at the base and at the knife end, less than 5 °, there is no separation in zone C, since the layer B and at the end of the knife 7 and at its base rises almost to the same height and does not rotate. When the angle of cut is greater than 15 °, the resistance to cutting increases.

Due to the inclination of the knife at an angle ft to the vertical, its penetration into the soil begins at the angle of the furrow wall (see Fig. 4), which leads to a reduction in the uneven load on the plow body at the moment of its deepening.

At {580 °, the unevenness of the load increases, since in the multi-shot plow all the additional blades begin to contact the soil at the same time with the entire blade. When the blade is worn, this leads to the difficulty of penetrating dense soils during plowing. At / 3–60 °, the plowing blockiness increases due to an increase in the thickness of the soil layer, which is below the additional knife. The deviation of the knife in the horizontal plane in the direction opposite to the deviation of the blade helps to compensate for the lateral reaction of the soil to the blade and the blade and to reduce the force of friction of the field board against the wall of the furrow, which leads to a decrease in the traction resistance of the plow.

At tti 60 °, the side reaction of the soil to the additional knife is reduced and the friction of the field board against the furrow wall increases. At 2-30 °, the depth of insertion of the additional knife in the furrow wall decreases, which leads to an increase in the plowing bulkiness. Due to the fact that the additional knife is located above the field board, the stabilization of the plow in the horizontal plane is not disturbed, since the field board interacts with the intact part of the furrow wall.

Claims (2)

1. A plow body containing a stand with a plowed-down surface and an additional knife behind it, the blade of which is set to the direction of movement at an opposite angle relative to the blade of the plow-mounted blade and sharp to the rack, characterized in that, in order to reduce energy intensity, the cutting angle of the additional knife at its end is less than the similar angle at its base, connected to the stand, by 5 - 15 °, while the acute angle between the additional knife and the stand is 60-80 °. 2. Plow body pop. 1, characterized in that the angle between the blade of the additional knife and the direction of movement is 30 - 60 °. Phie.1 5g g FIG. 2 FIG. four Fi.Z FIG. five