Method of rock massif disintegration by crosswise cuts

FIELD: mining.

SUBSTANCE: rock massif is disintegrated in crosswise direction by heading-and-winning machine planetary-disc actuators It is performed by serial intersecting cuts in radial-tangential and tangential-radial directions made by cutters of disc running in opposite directions. Said discs are set at the angle to plane formed by cutter lengthwise axis and radial direction relative thereto.

EFFECT: decreased working forces of hearing and wining machine.

2 cl, 3 dwg

 

The invention relates to the mining industry and can be used in excavating and treatment combines for the destruction of a rock working tool of the Executive.

There 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 the rock cutting tools-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 [RF Patent №2375571 from 10.12.2009,].

For reasons that impede the achievement of specified following technical result when using the known method is that, compared with industrial methods of destruction in a known way in contact with the bottom is twice the number doers the bodies, each of which contains an increased number of cutting tools. A large number of cutters on planetary and especially at the rotary bodies is necessary to ensure the minimum specific energy consumption at the destruction of the array. On the basis of experimental studies have established that the above condition when the depth of the cuts from 0.5 to 1.5 cm is performed during the step of cutting 3 see [Starkov LI and other Research schemes of cross-cutting. Mining magazine. WPI. universities, 1997, No. 7,8, s-123]. With a large number of cutters increases the reaction of the bottom hole on the Executive bodies, the pressure force of the combine and is limited to his work area without slipping caterpillars in the upward direction. To eliminate the last of the lack of need to increase the tractive ability of the crawler body moving.

Closest to the proposed technical solution is the way of destruction of a rock cross-cuts implemented by the planetary tilting-disk and rotor Executive bodies sinking-of the Shearer. Drives the planetary body is installed with an inclination towards a portable motion relative to the plane perpendicular to the longitudinal axis of the harvester, and destroy an array of cuts cycloidal-radial direction. When the tilt angle of the discs in the opposite side of the Central the peripheral part of the bottom (relative to the axis of the organ destruction) destroyed the planetary body, and the middle part of the face of the planetary and rotary Executive bodies [RF patent №2460882 from 10.09.2012 g]. 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, the number of cutters on the planetary body remains elevated due to the small step of cutting, and a lower rotary cutters on the body will not have a significant impact on the design of the body of the destruction and reduction of the pressure of the efforts of the harvester.

The characteristics which are common to the proposed technical solution, the method of destruction of a rock cross-cuts implemented by the planetary disk of the Executive bodies sinking-of the Shearer.

The objective of the invention is to reduce the pressure of the efforts of the harvester and the necessary traction ability of the crawler body movement of the harvester, destroying the bottom cross-cuts.

The task was solved due to the fact that in the known method the destruction of a rock cross-cuts, sold planetary disk of the Executive bodies sinking-of the Shearer array destroy consecutive intersecting cuts radial-tangential and tangentially - radial is th directions working tool drives rotating in opposite directions.

It is advisable disks set at an angle to the plane formed by the longitudinal axis of the body fracture and radial direction relative to the axis.

The characteristics of the proposed technical solution, the distinctive signs of the prototype array destroy consecutive intersecting cuts radial-tangential and tangentially-radial directions of the working tool discs rotating in opposite directions; the disks are set at an angle to the plane formed by the longitudinal axis of the body fracture and radial direction relative to the axis.

The proposed method is illustrated by the scheme shown in figure 1-3.

Figure 1 - diagram of the device of the Executive bodies (front view).

Figure 2 - diagram of the device of the Executive bodies (side view).

Figure 3 - cross-cuts of the Executive bodies.

The body of the destruction of the mountain harvester consists of two discs 1, 2, installed with an inclination relative to the plane formed by the axis of the Executive body and the radial direction, and rotary sabornie 3, destroying the Central part of the face (figure 1, 2). On the working bodies of the installed rock cutting tool 4, which consists of cutting tools and holders.

When the harvester drives 1, 2, revolving around the circular is Noah axis with frequency ω 0(relative movement) and the axis 5 with frequency ωn(portable movement), according to the working tool 4, which is in contact with the bottom, while the movement in the radial and tangential directions. Disks 1, 2 are installed on the rotary gear 6 and are driven from the transfer gear 7. The deviation of the disk from the radial direction causes the offset cuts in the tangential direction. As the disk cutters 1 actuator relative movement moved from the periphery of the bottom to the center, and the cutter disk 2 - from the center to the periphery with a simultaneous displacement of all incisors in the tangential direction, the intersection of cuts at different angles (figure 3). The displacement of the incisors in the tangential direction occurs under the action of drive portable movement and deflection disk radial direction. At the beginning of contact of the cutter with the bottom of the disk 1, the direction of the cuts 8 (3) mostly tangential, and at the end of a cut is predominantly radial. For disc 2, on the contrary, at the beginning of the cuts 9 (3) predominantly radial direction, and at the end is tangential. Mutual intersection cuts occurs over the entire area of the face from different angles, including angles close to 90 degrees. Rotary zaboric destroys the slaughter tangential cuts 10 (3) in the form of concentrically the circles.

Thus, when implementing the proposed method of destruction of the array cross-cuts reduced the number of cutters on the Executive, the reaction of the bottom hole on the Executive bodies, the pressure force of the combine and the necessary tractive ability of the crawler body moving.

1. The method of destruction of a rock cross-cuts implemented by the planetary disk of the Executive bodies sinking-of the Shearer, characterized in that the array destroy consecutive intersecting cuts radial-tangential and tangentially-radial directions of the working tool discs rotating in opposite directions.

2. The method according to claim 1, characterized in that the disks are set at an angle to the plane formed by the longitudinal axis of the body fracture and radial direction relative to the axis.



 

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