RU2627340C1 - Cutter-loader - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: cutter-loader includes a chassis, a frame, two rotary actuators with a center-to-center distance and the radius of the described contour when rotating by one executive body, two demolition devices located in the lower and upper parts. The length of the drum of the upper bump device is in the range 0.9-1.1 of the center-to-center distance between the rotating actuators. The drums of the lower demolition device are made composite, the end parts are equipped with berm cutters. The diameter of berm cutters depends on the length of the drum of the lower baffle device. Drum diameter of top hammer device and diameter of end mills meet certain mathematical expressions.

EFFECT: formation of the optimal form of production.

2 cl, 4 dwg

Description

FIELD OF THE INVENTION

The invention relates to the mining industry, and in particular to continuous mining combines, and is intended for mining in underground mining.

State of the art

Known tunneling shearer (US patent No. 2770448 (A)), including a frame, caterpillar track, the executive body, made in the form of two rotors, as well as the upper and lower drill rods.

The disadvantage of this solution is the impossibility of obtaining uniformly vertical walls of the mine, as well as the focus on the formation of a mine profile that is extremely close to rectangular.

A tunnel excavator is also known (US patent No. 6305754 (B1)), including a chassis, a support housing, a pair of central cutters and a pair of screw cutters located horizontally behind them, installed in the upper and lower parts of the combine. This device is taken as a prototype.

The disadvantage of the prototype is to obtain only an oval shape, due to the design of the supporting body. In addition, due to the length of the lower screw cutter, it is not possible to provide vertical side walls, which leads to incomplete excavation of the mined rock mass.

Disclosure of invention

The technical result of the present invention is the formation of an oval-arched form of production with the maximum possible vertical walls without peaks and, therefore, the maximum excavation of minerals.

This is achieved by the fact that the length of the drum L _{1 of the} upper fender device is in the range of 0.9-1.1 L center-to-center distance between the rotating actuators, and its diameter corresponds to the inequality:

In this case, the drums of the lower fender are made integral, and their end parts are equipped with berm cutters, the diameter of d _{2 of} which depends on the length of the drum L ₂ . The diameter of the cutter is determined by the ratio:

To give the roof a uniform arch shape without transitions from curved to rectilinear, an additional improvement is recommended, in which the diameter of the upper baffle drum is variable and increases towards the center of the combine.

A comparison of the inventive mining machine with the prototype allows us to conclude that the latter lacks features similar to the significant distinguishing features of the claimed invention.

Also, the invention does not follow explicitly from the prior art, therefore, the authors believe that the object is new and has an inventive step, since when eliminating such a technical solution as the length of the upper fender device, it is preferably in the range of 0.9-1.1L, and its diameter corresponds to the inequality:

,

,

the drum of the lower fender device is made integral, the end parts of which are equipped with berm cutters, the diameter d _{2 of} which depends on the length of the drum L _{2 of the} lower fender device and is determined by the ratio:

,

,

which allows you to get the maximum possible vertical walls without peaks and, therefore, the maximum extraction of minerals.

In addition, in order to achieve additional improvement in the form of a variable diameter of the upper fender, increasing towards the center, it will be impossible to provide the roof with a uniform arch shape, and therefore the technical result will disappear.

Description of drawings

The invention is illustrated graphic materials, which depict:

FIG. 1 - General view of a mountain harvester;

FIG. 2 - Cross-sectional view of a mine working passable by a mining combine with production parameters;

FIG. 3 - Mining harvester with rotary executive body;

FIG. 4 - Mountain harvester with planetary-disk executive body.

The implementation of the invention

The mountain harvester contains a running gear (1), a frame (2), two rotating actuators (3) with an inter-center distance L and a radius R of the described contour when rotated by one actuator, an upper fender (4), a lower fender (5), Berm cutters (6).

The invention works as follows. The mountain harvester undercarriage 1 (Fig. 1) is fed to the face until the contact of the executive body 3 (Fig. 1) with the face. When this is the processing of the face along the circuit R, described during rotation by one Executive body (Fig. 2). The upper fender device 4 (Fig 2) at the same time removes the pillar formed by the two executive bodies, the parameters of the fender in this case correspond to the indicated ratios, and provides a flat roof of the mine. The whole in the lower part of the working is processed by the lower fender device 5 (Fig. 2), is made integral, the end parts of which are equipped with Berm cutters 6 (Fig. 2). The diameter d _{2 of the} berm cutter is determined by the presented formula based on the given width of the passable mine L ₂ in order to avoid the formation of a visor between the described circuit during rotation by one actuator and the vertical component of the mine circuit. Thus, the dimensions of the berm cutter allow you to get the optimal parameters of the passable working with ensuring its stability.

In addition, to achieve further improvement in the production profile, the upper baffle device can be made with a variable diameter increasing toward the center.

It should be noted that the given configuration of the mining combine and its elements are a special case and can be performed differently. Essential are the very possibilities that such a configuration provides and which, nevertheless, can be achieved by a number of other design features. For example, if the width of the working on the base is L ₂ = L + 2R, then to obtain the vertical component of the working circuit, the diameter d ₂ must be equal to the radius R. Also, the claims do not limit the use of various designs of executive bodies in the design of the mining combine, including rotary (Fig. 3), planetary-disk (Fig. 4), etc.

Also for the claimed mining machine in the form described in the claims, it is possible to manufacture and use it using means and methods known prior to the filing date of the application.

The claimed invention can find wide application in the mining industry for conducting mine workings, in particular continuous miners, used in mining underground.

Claims (5)

1. A mountain harvester comprising a running gear, a frame, two rotating actuators with an inter-center distance L and a radius R of the described contour when rotated by one actuator, two fender devices located in the lower and upper parts, respectively, characterized in that the drum length L ₁ the upper fender device is in the range of 0.9-1.1 L of the intercenter distance between the rotating actuators, and its diameter corresponds to the inequality

while the drums of the lower fender are made integral, and the end parts are equipped with berm cutters, the diameter d _{2 of} which depends on the length of the drum L _{2 of the} lower fender and is determined by the ratio:

2. A mountain harvester according to claim 1, characterized in that the diameter of the upper baffle drum is variable and increases toward the center of the combine.

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