RU2522111C1 - Method of rock massif disintegration by crosswise cuts - Google Patents

Abstract

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

Description

The invention relates to the mining industry and can be used in sinking and shearers for the destruction of the massif with a working tool of the executive bodies.

A known method of destruction of a mountain range by cross cuts, implemented by a planetary-disk and rotary executive bodies of a tunneling shearer. The array is simultaneously destroyed by cuts relative to the axis of the executive organs in the radial direction by the rock-cutting tool of the planetary-disk organ, and in the tangential direction by the rock-cutting tool of the rotary organ with a depth of cuts equal to the depth of cuts of the planetary organ at the intersections of the cuts. The supporting surface for fastening the rock cutting tool of the rotary actuator is made with an offset relative to the supporting surface of the disks equal to the difference in the depth of cuts of the rotor when there is no offset and the planetary organ of destruction at the intersection of the cuts [RF Patent No. 2375571 of 12/10/2009].

The reasons that impede the achievement of the technical result indicated below when using the known method include the fact that, compared with industrial destruction methods, the known method has twice as many executive bodies in contact with the face, each of which contains an increased number of incisors. A large number of incisors on the planetary and especially on the rotary actuators is necessary to ensure a minimum specific energy consumption for the destruction of the array. Based on experimental studies, it was found that the above condition with a cut depth of 0.5 to 1.5 cm is satisfied with a cutting step of 3 cm. [L. Starkov et al. Cross-cutting pattern study. Mountain Journal. Izv. universities, 1997, No. 7.8, p. 121-123]. With a large number of incisors, the reaction of the face to the actuators increases, the pressure force of the combine and its work area is limited without slipping the tracks when moving up. To eliminate the last drawback, it is necessary to increase the traction ability of the caterpillar moving organ.

Closest to the proposed technical solution is a method of destruction of a rock mass by cross cuts, implemented by a planetary inclined disk and rotary executive bodies of a tunneling shearer. The disks of the planetary organ are installed with an inclination towards the portable movement relative to the plane perpendicular to the longitudinal axis of the combine and destroy the array with cuts of the cycloidal radial direction. When the discs are tilted in opposite directions, the central and peripheral parts of the face (relative to the axis of the destruction organ) are destroyed by the planetary organ, and the middle part of the face by the planetary and rotary executive bodies [RF patent No. 2460882 of 09/10/2012]. This method is adopted as a prototype.

The reasons that impede the achievement of the technical result indicated below when using the known method adopted as a prototype include the fact that in the known method the number of incisors on the planetary organ remains increased due to the small cutting step, and a slight decrease in incisors on the rotor organ will not have a significant effect on the design of the destruction organ and the reduction of the pressure head of the combine.

Signs that are common with the proposed technical solution is the method of destruction of the rock mass by cross cuts, implemented by the planetary-disk executive bodies of the tunneling shearer.

The objective of the invention is to reduce the pressure head of the combine and the necessary traction ability of the caterpillar organ moving the combine, destroying the face of the cross cuts.

The problem was solved due to the fact that in the known method of destroying a mountain range with cross cuts, implemented by planetary-disk executive bodies of a tunneling shearer, the massif is destroyed by successive intersecting cuts of radially tangential and tangential radial directions with a working tool of disks rotating in opposite directions .

It is advisable to install the disks at an angle to the plane formed by the longitudinal axis of the destruction organ and the radial direction relative to the axis.

The features of the proposed technical solution, distinctive from the features of the prototype, - the array is destroyed by successive intersecting cuts of radial tangential and tangential radial directions with a working tool of disks rotating in opposite directions; disks are installed at an angle to a plane formed by the longitudinal axis of the fracture organ and a radial direction relative to the axis.

The proposed method is illustrated by the schemes shown in figures 1-3.

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

Figure 2 is a diagram of the device of the executive bodies (side view).

Figure 3 - diagram of the cross-cuts of the executive bodies.

The destruction unit of a mining combine consists of two disks 1, 2 mounted with an inclination with respect to a plane formed by the axis of the actuator and the radial direction, and a rotary bore 3 destroying the central part of the face (Fig. 1, 2). A rock cutting tool 4 consisting of tool holders and cutters is installed on the working bodies.

During the operation of the combine, disks 1, 2, rotating around their own axis with a frequency of ω ₀ (relative motion) and axis 5 with a frequency of ω _n (portable motion), inform the working tool 4 in contact with the face, at the same time, movement in the radial and tangential directions . Disks 1, 2 are mounted on rotary gearboxes 6 and are driven from the transfer gear 7. Deviation of the discs from the radial direction causes the cuts to shift in the tangential direction. Since the cutters of the disk 1 drive the relative motion from the periphery of the face to the center, and the cutters of the disk 2 from the center to the periphery with the simultaneous displacement of all the cutters in the tangential direction, then the cuts intersect at different angles (figure 3). The displacement of the cutters in the tangential direction occurs under the influence of the drive of the portable movement and due to the deviation of the discs from the radial direction. At the beginning of the contact of the cutter with the face of the disk 1, the direction of the cuts 8 (Fig.3) is mainly tangential, and at the end of the cut - mainly radial. For disk 2, on the contrary, at the beginning of cuts 9 (Fig. 3), the direction is mainly radial, and at the end it is tangential. Mutual intersection of cuts occurs over the entire area of the face at various angles, including at angles close to 90 degrees. The rotary zaburnik destroys the face tangential cuts 10 (Fig.3) in the form of concentric circles.

Thus, when implementing the proposed method of destruction of the array with cross cuts, the number of incisors on the executive bodies, the reaction of the face to the executive bodies, the pressure head of the combine and the necessary traction ability of the caterpillar moving organ decreases.

Claims (2)

1. The method of destruction of the massif by cross cuts, implemented by the planetary-disk executive bodies of a tunneling shearer, characterized in that the massif is destroyed by successive intersecting cuts of radial-tangential and tangential-radial directions with the working tool of disks rotating in opposite directions. 2. The method according to claim 1, characterized in that the disks are installed at an angle to the plane formed by the longitudinal axis of the destruction organ and the radial direction relative to the axis.

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