SU1120099A1 - Tool for mining machines - Google Patents

Abstract

TOOL FOR MOUNTAIN MACHINES, including a body, a stepped working part and a tip connected to the working part, characterized in that, in order to increase the efficiency of destruction, the steps of the working part are provided with ribs, while the edges of the subsequent step in the direction from the tip are larger than the number of ribs the previous one, and the edges of the next step are located between the edges of the previous step. S

Description

The invention relates to mountain formations and can be used in mapn tools for the destruction of hard and frozen soils.

Known tools for mining machines, including the body with ribs, made in the form of a polyhedron, and the tip ll.

The disadvantage of such devices is that in the process of introduction, as a result of considerable friction against the material, great forces arise, which reduces the strength of the tool.

Closest to the invention is a tool for mining machines, comprising a housing, a stepped working part and a tip connected to the working part 2,

A disadvantage of the known device is that in the process of operation, the gaps between the steps occur, which reduces the effectiveness of the destruction process.

The aim of the invention is to increase the efficiency of the destruction process by creating a stress state on individual, parts of the soil mass that is in contact with the tip.

The goal is achieved by the fact that in the tool for mountain mangins, including a body, a stepped working part and a tip connected to the working part, the steps of the working part are provided with ribs, while the ribs of the subsequent step in the direction from the tip are larger than the number of ribs, the previous one and the edges of the subsequent stage are located between the edges of the previous stage.

FIG. 1 shows a tool for mining machines, a general view; in fig. 2, section A-A in FIG. one; in fig. 3 is a section of the C-C in FIG. 1 {in FIG. 4 shows a section B-B in FIG. one.

The tool for mining machines includes body 1, tip 2, pointed at the bottom, steps 3 and 4, between which depressions 5 and 6 are made. The tip has a triangle in cross section, the faces of which are stress concentrators for breaking hard and frozen soils .

Step A, following step 3, has a large cross-sectional area in cross section (Fig. 3), on which working surfaces there are ribs 7. Step 4 also has a greater number of ribs 7 as compared to the previous step 3, which has ribs 8 The transition from one stage to another is carried out through depressions 5 and 6, which have a circular cross-section.

In addition, the ribs 8 of the previous stage in the plan are located between the ribs 7 of the subsequent stage.

When introduced into the ground with a impact load, it initially interacts with the medium. The tip and then as it moves deeper into the depressions 5, the rib of the 8th stage 3 and then the 7th stage 4 begin to work. The location of the ribs of the previous stage in the plan between the edges of the subsequent stage creates ground in the ground. The attachment of the tool to the base machine is carried out with the help of the housing 1.

The use of the proposed device makes it possible to increase the efficiency of the development of soils of hard and frozen and other rocks of different physical and mechanical state by creating a concentration of stresses in certain parts of the hull between the steps.

Claims (1)

. TOOL FOR MINING MACHINES, comprising a casing, a stepped working part and a tip connected to the working part, characterized in that, in order to increase the destruction efficiency, the steps of the working part are provided with ribs, while the ribs of the next stage in the direction from the tip are larger than the number the ribs of the previous one and the ribs of the next step are located between the ribs of the previous step.