RU2395952C1 - Working body of tillage device - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: working body has a rack mounted on its basis, removable right and left plowshares and removable chisel and a knife-shredder. The chisel is placed over the plowshare in the central part of the working body. The knife-shredder is conjugated cutting and fastening parts and is fixed in the forepart of the chisel. The knife-shredder is formed from sheet metal blank with slots made on the opposite sides of the blank, the bend of the cutting part relative to the fastening part along the line connecting the ends of the slots, at that one edge of the blank is the cutting. The chisel is equipped with a slot for placement of the fastening part of the knife-shredder. Cutting and fixing parts of the knife-shredder are located on mutually perpendicular planes. Slots separating the knife-shredder to fastening and cutting parts are made in parallel to front and cutting edges of the knife-shredder, respectively.

EFFECT: such design enables to provide soil pre-pulverisation with redirection of cultivated soil layers during the motion of the working body.

2 cl, 5 dwg

Description

The invention relates to agricultural machinery and can be used as a working body in tools for soilless tillage.

Known working body for subsurface cultivation of the soil, including a stand bearing a paw, on each wing of which rippers and mounting brackets of rippers are tier-mounted, while the ripper of the upper tier is rod-shaped, and the ripper of the lower tier in the form of a lancet paw. When the implement moves, the support leg cuts the soil layer, and rod-shaped cultivators crush the soil into separate blocks and lumps. Sharpeners in the form of lancet paws, being under the main flow of soil lumps, cut the lower layer of soil, which the wings of the carrier paw could not cut. Thus, the effect of smooth plowing without pile ridges is provided (RF patent for the invention No. 2050760).

However, this quality of loosening the soil is accompanied by a significant increase in traction resistance of the implement, which negatively affects the reliability and durability of individual structural elements and the entire working body as a whole.

Closest to the technical nature of the claimed utility model is the working body of the cultivator - a plane cutter, including plane-cutting shares, a stand and a bit fixed in its front part, made in the form of a triangular wedge, while a knife with a sawtooth sharpening is strengthened in front of the bit. The knife cuts, a layer of soil that is raised when cutting with plowshares, and an elongated chisel pushes it in front of the counter (AS USSR No. 298265).

The known design does not have optimal traction characteristics due to the use of a knife with a sawtooth sharpening, which does not provide preliminary crushing of the soil.

The problem to which the invention is directed, is to improve the crumbling of the soil during its processing while reducing the traction resistance of the gun.

The technical result achieved by using the proposed technical solution is to provide the possibility of preliminary crumbling during movement of the implement and redirection of the treated soil layers.

The problem is solved in that in the working body of the tillage implement, containing the stand fixed on the base, removable right and left shares, a removable chisel placed above the shares in the central part of the working body, and a chopper knife, which is a mating cutting and fixing parts, fixed in the front part of the bit, according to the technical solution, the bit is provided with a slot for accommodating the fastener part of the chopper knife, while the cutting and fastening parts of the chopper knife are located mutually rpendikulyarnyh planes. In this case, the chopper knife is formed from a sheet metal billet with slots made on opposite sides of the workpiece, the bend of the cutting part relative to the fastener along the line connecting the ends of the slots, while one of the edges of the workpiece is cutting, and the slots separating the chopper knife into the fastener and cutting parts are made parallel to the end and cutting edges of the chopper knife, respectively. The invention is illustrated by the following drawings.

figure 1 schematically shows the working body of the tillage implement (side view);

figure 2 schematically shows the working body of the tillage implement (top view);

figure 3 is a schematic representation of the fastening of the chopper knife to the bit of the working body (side view);

figure 4 presents the workpiece for the manufacture of a knife-chopper;

Figure 5 presents a top view of the chopper knife.

The positions in the drawings indicate:

1 - base

2 - stand

3 - right share

4 - left ploughshare,

5 - bit,

6 - slot chisels,

7 - chopper knife,

8 - the cutting part of the knife,

9 - mounting part of the knife;

10 - fold line;

11 - cuts in the knife blank;

12 - holes for mounting the chopper knife.

The working body for subsurface tillage is a base 1, on which stand 2 and right 3 and left 4 shares with sharpening are rigidly fixed (figure 1, 2). The shares are removable. In the central part of the working body above the plowshares, a chisel 5 is made, made in the form of a bar with a sharpened front end part. In the central part of the bit from the side of the front end cutting surface, a horizontally oriented slot 6 is made for mounting the fastening part 9 of the chopper blade 7 (Fig. 2). The knife is made of curly blanks of sheet metal (figure 4). The blank is a complex geometric figure that is visually divided into a right-angled triangle as the cutting part and a rectangle as the fastening part, while the longest side of the triangle of the cutting part is sharpened to form the cutting edge of the chopper knife. The shape of the mounting part of the chopper knife is determined by the shape of the slot made in the front end part of the bit and is associated with the technological capabilities of fastening the chopper knife. For the purpose of functional separation into the cutting and fastening parts, slots 11 are made in the chopper-knife blank, which provide the possibility of placing the fastening and cutting parts in mutually perpendicular planes. This arrangement is achieved by bending the parts along the geometric line of the fold 10 connecting the ends of the slots. One of the slots is made along a line that is the boundary between the cutting triangle and the rectangle of the mounting parts. The other slot is made on the opposite side relative to the first and is directed deeper into the cutting part so that the cutting edge of the chopper knife is parallel to this slot. The slots are made on opposite sides with a depth of up to the middle of the workpiece web, while the slot located on the side of the mounting part is parallel to the end edge of the workpiece. The fastening part is provided with holes to ensure rigid fixation of the knife in the slot of the bit (Fig.4, 5). The chopper knife 7 is formed from the workpiece by bending the cutting 8 relative to the fastening 9 parts along line 10 and placing them in mutually perpendicular planes. The edge of the cutting part of the chopper knife is sharpened at an angle of up to 30 °. The mounting part of the chopper knife 9 is fixed in the slot 6 of the bit 5.

The operation of the device is as follows.

The working bodies are fixed on the frame of the gun. When the gun moves, the bit cuts the treated soil layer, and the cutting part of the chopper knife performs preliminary crushing of the soil. Therefore, on the ploughshare of the working body, the soil layer enters loosened, which significantly reduces the traction resistance of the gun and increases its productivity.

An example of a specific implementation.

A working body of the claimed design was manufactured for installation and operation as part of a tillage implement such as a prefabricated paw for subsurface tillage. The working body provides a working width of 700 mm and consists of two identical shares, symmetrically located and fixed on the base of the working body at an angle of 40 ° to the axis of symmetry, a stand, a chisel fixed above the plowshares and a chopper knife installed in the slot of the chisel. The share width is 80 mm, the length along the lower cutting edge is 550 mm. The bit has the shape of a bar with a thickness of 20 mm. The chopper knife is made of 5 mm thick sheet metal blanks with the following main dimensions: width of the fastening part 60 mm, length of the cutting edge 300 mm, width of the cutting part 50 mm, depth of cut, parallel to the end edge of 30 mm, depth of cut, parallel to the cutting edge 40 mm.

Claims (2)

1. The working body of the tillage implement, comprising a stand fixed on the base, removable right and left shares, a removable bit placed above the shares in the central part of the working body, and a chopper knife, which is a mating cutting and mounting parts, mounted in front of the bit, characterized in that the bit is equipped with a slot for accommodating the mounting part of the chopper knife, while the cutting and mounting parts of the chopper knife are located in mutually perpendicular planes, and the chopper knife is razovan sheet metal blanks with slits formed on opposite sides of the workpiece, an excess relative to the mounting portion of the cutting along the line connecting the ends of the slots, with one of the edges of the blank is cutting. 2. The working body of the tillage implement according to claim 1, characterized in that the slots separating the chopper knife into the fastening and cutting parts are made parallel to the end and cutting edges of the chopper knife, respectively.

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