SU1373763A1 - Working member of continuous-action earth-moving machine - Google Patents

Abstract

The invention relates to working bodies used in the mining and construction industry. The goal is to expand technological capabilities while reducing energy intensity. The working body is manufactured in the form of a screw with working and non-working surfaces of turns. On the periphery of the non-working surface, there are side cutters 4. The distance between cutters 4 along helix 2 is determined by the formula a FD-1 / T Cos о (where D is the screw diameter along the cutting edges of the side of the cutters; 1 is the length of the cutting edge of the cutter; T - screw helix pitch 2; o (- screw auger helix 2 angle. The cutters 4 are positioned so that the end of the cutting edge of the leading edge in the direction of rotation of the cutter 4 and the beginning of the cutting edge of the next one are in the same radius in the plane perpendicular to the longitudinal axis of the tool . On the console end of the working org. Mechanical cutters are arranged on the cutting cutters 6. Mode 4 close to polublokirovannomu, since their cutting edges formed by the rotation continuous stepped cutting line. 1 3.p. f ly-2-yl. (A

Description

with oo

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The invention relates to mining, construction and earth-moving machinery, in particular, to working bodies of continuous-moving earth-moving machines for trimming ledges in hydromechanized excavation.

The aim of the invention is the expansion of technological capabilities while reducing energy consumption.

In Fig.1 shows the working body of the earthmoving magshny, General view; figure 2 - view And figure 1.

The operating member includes a shaft 1 on which a transporting spiraling tape 2 is fixed, the surface P of the turns of which is the working surface and the surface H is non-working. Along the periphery of the non-working surface are the holders 3 side cutters 4. The distance between the cutters 4 along helix 2 is determined by the formula

but

t-cos s

where D is the diameter of the screw along the cutting edges of the lateral incisors;

1 - the length of the cutting edge;

T is the pitch of the helix;

d is the elevation angle of the auger spiral. At the same time, the cutters 4 are positioned so that the end of the cutting edge of the cutter 4 that precedes in the direction of rotation and the beginning of the cutting edge of the subsequent edge are on the same radius in a plane perpendicular to the longitudinal axis of the tool. In addition, the side cuts 4 are installed in the holders 3 so that their parts cantileverly pivot towards the front (in the direction of rotation) working surface of the spiral tape 2. One end of the working body is equipped with a flange 5, and on the second cantilever there are end cutters 6 The working principle of the working body is as follows.

The flange 5 of the working body is attached to the drive rotational-translational motion. It is then rotated and, moving along its longitudinal axis, like a drill, penetrates the ground ledge. In this case, the end cutters 6 are loose, and the spiral tape 2, placed on the shaft 1, transports soil from the well with a working surface. The formation of the borehole diameter is performed

five

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five

0

5 5

0

five

lateral incisors 4 installed in the holders 3, which are fixed on the non-working surface of the helix 2. After insertion to a predetermined depth, the longitudinal feed stops and the working body is communicated transversely at which the lateral cutters 4 create in the ground scarp a cutting slit, undercut thereby a layer of soil that periodically opens from the pillar and is crushed by impact.

The cutting mode of the cutters 4 is close to semi-blocked, since their cutting edges form a continuous stepped cutting line during rotation. In addition, the lateral incisors 4 are mounted in the holders 3 so that their cutting parts hang in front (in the direction of rotation) of the transporting surface P of the helix 2, so that the soil they cut off immediately goes on this surface P without interfering between the turns of the screw and taken out of the cut-in slit. I

The holders 3 mounted on the non-transporting surface II of the helix 2 do not come into contact with the ground and do not increase the energy consumption for undercutting.

Claims (2)

1. A continuous digging tool working body, including a cantilever screw mounted on a drive with working and non-working surfaces of coils, on which side cutters are placed, cutting, the edges of which are parallel to the longitudinal axis of the screw, opportunities while reducing energy consumption, side pe3iij i are installed on the non-working surface of the coils, and their cutting edges are placed above the working surface, while the end of the cutting edge of the front in the direction of rotation audio schneka lateral incisor and the top edge rezhug4ey subsequent lateral incisor are arranged on one straight in a plane perpendicular to the longitudinal axis of the screw, npiweM cantilevered end of the auger is provided with additional cutters arranged at its end surface. 2. The working organ of claim 1, wherein the distance a between the adjacent incisors on the spiral is  T-cosT D - diameter of the screw along the cutting edges of the lateral incisors; 1 is the length of the cutting edge; T - spiral pitch; d is the elevation angle of the auger spiral. fie.g