Destruction method of mine rock with cross cutters

FIELD: mining.

SUBSTANCE: method involves uniform destruction of rock mass with continuous cross cutters of cycloidal direction with working tool of planetary flat disc actuators and of tangential direction with working tool of rotary elements. The latter are installed behind front and rear parts of the disc and fixed on reduction gears of planetary flat disc destruction elements.

EFFECT: increasing rock mass destruction efficiency using cross cutters.

2 cl, 3 dwg

 

The invention relates to the mining industry and is intended for the destruction of a rock working tool heading-treatment combines.

There is a method of destruction of a rock cross-cuts through the planetary Executive bodies of which are located in the same plane of the disks and of the working tool. When the working tool is moved along the spatial cycloidal lines and destroy a face intersecting cuts [1].

For reasons that impede the achievement of specified following technical result when using the known method is that in the known method the depth of the cuts formed in the destruction of the array work tool, the front and rear disks, different and has a value at which the effect of cross-cutting insignificant. In addition, the intersection of cuts, except the Central and peripheral areas, occurs at small angles [2].

Closest to the proposed method is a method of destruction of a rock cross-cuts implemented by the planetary disk and rotor Executive bodies sinking-of the Shearer. The array at the same time destroyed cuts relative to the axis of the Executive bodies in the radial direction of rock cutting tools is a COP-planetary disk body, and in the tangential direction - rock cutting tool rotary body with a depth of cut equal to the depth of cuts planetary body at the intersections of the cuts. Bearing surface for fastening rock cutting tool rotary Executive body is made with an offset relative to the support surface of the disc, equal to the difference between the depth of cut of the rotary body in the absence of bias, and the planetary body of destruction at the intersection cuts [3]. This method is adopted as a prototype.

For reasons that impede the achievement of specified following technical result when using the known method, taken as a prototype, is that in the known method cuts the planetary body of variance with repeated increasing step and mixed by changing the pitch and depth of half their length. In addition, under the existing standard layouts Executive bodies and performance combines the depth of cuts may exceed a value at which the destruction of the cross-cuts most efficiently. Because of these drawbacks it is impossible to ensure the destruction of the entire area of the face of highly effective cross-cuts.

The characteristics which are common to the proposed technical solution, the method of destruction of a rock cross-cuts, VK is uchumi simultaneous destruction of the array cross-cuts the planetary disc and rotor Executive bodies sinking-of the Shearer on their axis.

The objective of the invention is improving the efficiency of the process of destruction of the array cross-cuts.

The task was solved due to the fact that in the known method the destruction of a rock cross-cuts, including simultaneous destruction of the array cross-cuts the planetary disc and rotor Executive bodies sinking-of the Shearer regarding their axis, the array ruin continuous cross cuts cycloidal direction of the working tool of the planetary plane of the disk of the Executive bodies and the tangential direction of the working tool of the rotary bodies. When this rotary bodies set for front and rear disk and fixed to the gears of the planetary plane of the disk bodies of destruction.

The characteristics of the proposed technical solution, different from the characteristics of the prototype, destroy the array of continuous cross-cuts cycloidal direction of the working tool of the planetary plane of the disk of the Executive bodies and the tangential direction of the working tool of the rotary bodies; establish rotary bodies for the front and rear disc; put them on the gears of the planetary plane of the disk bodies of destruction.

The proposed method is illustrated in the drawings presented on f is 1-3.

1 shows a diagram of the device of the Executive bodies of the cross-cuts.

Figure 2 - cross section A-A.

Figure 3 - cross-cut planetary flat disc and rotor Executive bodies, where 7 - Reza front wheel of the planetary body; 8 - Reza rotary body mounted on the shaft; 9 - Reza rear wheel of the planetary body; 10 - Reza rotary body mounted on the gearbox.

To improve the efficiency of the method proposed mountain range to destroy the continuous cross-cuts rotary and planetary flat disk of Executive bodies.

Each of the organs of destruction consists of two discs 1 and four rotors 2, 3 (1), rotating in the plane perpendicular to the axis of the harvester. The disk 1 is installed on the bearings 4, mounted on shafts 5 gear 6 (figure 2). The rotors 2, 3 are located behind the front and rear discs 1 and rigidly fixed to the stationary shaft 5 and the housing 6.

During the rotation of disk 1 around the axis of the Executive body of the working tool is moved on a cycloidal lines 7, 9 (3) the intersection of the trajectory. Crossing paths at angles close to 90°, occurs in the Central and peripheral parts of the face (figure 3). In the middle part of the face cuts formed by the front and rear disks, re cauda (at angles of about 90°) with continuous concentric cuts 8, 10 constant cross section of the two rotary bodies. The depth and step cutting rotary bodies is set depending on the settings in the intersection of the cuts planetary bodies due to displacement of the abutment surfaces of the cutting tools and holders relative to each other. Effective destruction of the array planetary and rotary bodies is ensured by the choice of rational depth and step, cross-cuts. It is known that in the destruction of the array cross-cuts the specific energy consumption decreases with decreasing depth and step cutting, and for each depth, there is an optimal step in which the minimum energy consumption [4].

The shallow depth and high efficiency cuts is achieved by increasing the total number of cutting units and Executive bodies. The main part of the surface of the face collapses the two Executive bodies, each of which consists of two disks 1 having front and rear cutting parts, and four rotors 2, 3 (figure 2)installed for cutting parts of the disk. Rational distance between cycloidal cuts depends on the relative and portable speed planetary body and the amount of the working tool (cutters)that is installed on the disk.

If cycloidal cuts formed diametrically opposite parts of the disk, to them who are the deviation in depth, to eliminate the disk 1 is installed with a slight tilt in the direction of the cuts with less depth.

Thus, the high efficiency of the proposed method due to the decrease of specific energy consumption in the destruction of the array cross-cuts with rational parameters.

Sources of information

1. Arkhangelsk A.S. on theory of planetary Executive bodies of roadheaders. Calculation, design and testing of mining machines. Collection No. 12. Ed. ing. A.V. Topchiev): Whiteheat, 1955. - 451 S.

2. Debt L.V. Improvement PLANO-planetary Executive bodies of roadheaders. Sat. Mining electrical engineering and mechanization of mining operations. - M.: Nedra, 1969. - S-193.

3. RF patent №2375571 from 10.12.2009,

4. The study schematic cross-cutting / LI Starks [and other] // journal of Mining. WPI. higher education institutions. - 1977. No. 8. - S-123.

1. The method of destruction of a rock cross-cuts, including simultaneous destruction of the array cross-cuts the planetary disc and rotor Executive bodies sinking-of the Shearer regarding their axis, characterized in that the array ruin continuous cross cuts cycloidal direction of the working tool of the planetary ploskovskaya Executive bodies and tangential nab is Alenia working tool of the rotary bodies.

2. The method according to claim 1, characterized in that the rotary bodies set for front and rear disk and fixed to the planetary gearboxes ploskovskaya bodies of destruction.



 

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