SU723060A1 - Soil-loosener tooth tip - Google Patents

Description

I

The invention relates to earth-moving machines, namely, rippers, designed to develop frozen soils and fissured rocks.

A working ripper body is known, having loosening racks with tips, the front face of which is made curved in the direction of the soil to be developed, with a bar-shaped rear face having a sharpening angle of 30-40 and variable, decreasing in the direction of the rack

The disadvantage of such a device is that loosening of dense soils, especially with increasing depth of loosening, is characterized by an increase in the energy intensity of the process of loosening.

The known tip of the ripper tooth contains a cutting edge, mounting holes and a protrusion on the front face G21.

The disadvantage of this tip is that the ripper can be used when loosening dense soils.

with a small depth of loosening, since the protrusions are located on the front face to increase the moment of resistance of the cutting edge.

The purpose of the invention is to reduce the energy intensity of the process of rooting.

This is achieved in that the protrusion is made in the form of a triangle with a variable angle of sharpening, decreasing from the cutting edge.

On fng. 1 schematically shows the tip of the ripper; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The ripper tip has a cutting edge 1, a front face 2 on which a protrusion 3 is located with brook surfaces 4 tilted with a smooth radius 5 connected by a front face 2, and the angle of point p decreases with distance from the cutting edge 1 on the side walls 6, the holes 7 for fastening the tip to the stand 8 are symmetrically arranged. The rear rpiaHb 9 of the tip is also made with a protrusion 3 that is identical to the front face 2. Rooting of the soil with the tip is as follows. When the tip moves in the ground, heterogeneous deformations occur due to the impact of each of the parts of the cutting surfaces. The wedging part of the protrusion 3 contributes to the development of cracks (force, see (sp. 2, 3, and) in the direction of movement of the tip and at an angle to it (° C, see Figs. 2, 3, and 4). Since the wedge angle is {cm Figs. 2, 3 and 4) as the distance from the cutting edge of the tip decreases, the work of the wedging part is expended on the formation of minor plastic deformations along the contact surface. The side surfaces 4 act on the ground, as in the case of loosening the tip soil with a flat cutting surface (force Pb). The work required to form a sealing core is spent in a smaller amount, since the overlying part of the array is weakened by cracks from the wedging out

Claims (2)

Fig.1604 stupa. Thus, loosening the soil with the proposed tip is characterized by a high degree of crushing of individual pieces, a decrease in the dynamics of the process and a decrease in the energy intensity of the loosening. As the cutting edge 1 is worn, forming a wear area exerts a significant resistance of the tip into the ground, the tip should be rotated 180, as a result, the life of the tip increases. Claims of a ripper tooth comprising a cutting edge, mounting holes and a protrusion on the front face, which is characterized by the fact that the protrusion is made in the form of a triangle with a variable point angle decreasing from the cutting edge in order to reduce the energy intensity of the loosening process. Sources of information taken into account during the examination 1. USSR author's certificate No. 160115, cl. E 02 F 5/30, 1958. 2. US patent number 3225467, class. 57-143, published. 1965 (prototype). 6B