RU2744123C1 - Cutting-loading machine - Google Patents

Abstract

FIELD: machine building; mining.SUBSTANCE: invention relates to actuators of cutting-loading machines. Cutting-loading machine comprises a running gear, at least one actuator with at least one handle rotating at a speed VP, c mounted thereon at least one cutting blade rotating at a speed VD,a cutter attached to it, the lower conveyor and fenders. Said cutters mounted on said disc at an angle that depends on VPand VD.Said cutting disc is mounted on the handle such that its cutting plane is parallel to the plane passing through the axis of rotation of the executive member of the cutting-loading machine, and is spaced from it in direction of handle rotation at distance greater than product of portable handle rotation radius by tangent of said angle.EFFECT: rotating additional torque from cutting speed and cutting surface cutting plane displacement in handle rotation direction.1 cl, 6 dwg

Description

The technical field to which the invention relates

The invention relates to the mining industry, in particular to the executive bodies of continuous mining combines, and is intended to expand the functionality of mining combines used when carrying out mine workings in the extraction of minerals by an underground method.

State of the art

In the mining industry, a large number of mining combines with rotating executive bodies of the planetary-disk type are known, which ensure the destruction of the rock mass when carrying out underground mine workings over various rocks.

During the operation of continuous miners during excavation of mine workings and during cleaning operations in chambers, when the miner moves to the face along the axis of the excavation, it is an important task to ensure the optimal cutting speed by the executive body of the rock miner for efficient excavation of the mine work. This ensures the advancement of the mining machine without unnecessary load on the reducer of the portable rotation of the executive body handles and the undercarriage, while a decrease in the cutting speed will lead to increased wear of the tool, the load on the gearbox of the portable rotation of the executive body handle, and will make it difficult to move the miner to the bottom.

Disclosure of invention

The technical result of the present invention is an additional torque arising from the combination of the cutting speed and the displacement of the cutting plane of the cutting disc in the direction of rotation of the handle, which reduces energy consumption for the portable rotation drive and reduces dynamic loads on its mechanical elements.

The above technical results are achieved by the fact that the mining combine contains, the undercarriage, at least one executive body with at least one handle rotating at a speed VP with at least one cutting disk installed on it, rotating at a speed VD with cutters fixed on it, the lower fender and conveyor;

- the mentioned cutters are fixed on the said disk at an angle to the cutting plane, determined by the formula:

α = arctan (Vp / Vd)

- the mentioned cutting disc is installed on the handle in such a way that its cutting plane is parallel to the plane passing through the axis of rotation of the mining machine's executive body, and is spaced from it in the direction of rotation of the handle at a distance Δ, which is determined by the inequality:

Δ> R _lane ⋅tan (α)

where R _lane is the radius of the portable rotation of the handle.

Comparison of the claimed mining machine with the existing technical solutions allows us to conclude that the latter lacks features similar to the essential distinctive features of the claimed invention.

The invention should not be explicitly in the art, therefore, the authors believe that the object is new and involves an inventive step, because the absence of the above technical solutions, such as an established offset at a distance Δ with respect to a speed V _P arm and in the direction of rotation the cutting disc rotating at a speed V _D , as well as the cutters installed on it at an angle α to the plane of its cutting - it is not possible to ensure the operation of the executive body of the mining combine, and therefore, the technical result also disappears.

Description of drawings

The essence of the invention is illustrated by graphic materials, which shows:

FIG. 1 - Section of a mining machine with one executive body;

FIG. 2 - General view of a mining combine with one executive body with one handle with a cutting disc;

FIG. 3 - General view of a mining combine with two executive bodies with two handles with one cutting disc each;

FIG. 4 - General view of a mining combine with two executive bodies with two handles with one cutting disc each;

FIG. 5 - General view of a mining combine with two executive bodies with two handles with one cutting disc each;

FIG. 6 - General view of a mining combine with one executive body with three sticks with one cutting disc each.

Implementation of the invention

Extraction of solid minerals by drilling involves a number of complex technological processes, such as the destruction of rocks, the formation of the required geometry (profile) of the face, removal of chipped rock from the processing area, transportation of chipped rock, etc. Roadheaders are designed to handle all of these processes.

An important task in the design of mining machines is the choice of the cutting head of the mining machine, which provides the optimal cutting speed of the rock for efficient driving of the mine workings.

The density of the rocks mined by the tunneling method can vary from 0.4 to 4.5 t / m ³ . The properties and conditions of coal mining are significantly different, for example, from the extraction of potash salt. Other types of rock also have a significant scatter of properties, for example, sylvinite, carnallite, rock salt, gypsum, throne.

The foregoing shows that the creation of a mining machine with versatility, i.e. the ability to work effectively in a wide range of rocks is challenging. As a rule, roadheaders are created for the extraction of rock of one kind and their design parameters are laid for work in a particular field or even a particular mine.

The present invention is directed to the creation of a mining machine, which ensures the operation of the executive body of the mining machine with a wide range of factors, without the need to reconfigure for a certain breed. That is, with the design of an executive body of a mining machine designed for the average density of the mined rock, it should be possible to use this executive body on a mining machine in workings with a denser rock without replacing the drive equipment. This can be achieved by using additional torque on the actuator in accordance with the claimed invention.

The mining harvester contains a running gear (1), an executive body with a handle (2) with a cutting disc (3) and cutters installed in the cutting disc, a lower deflector (4) and a conveyor (5).

With the help of the undercarriage 1 (Fig. 2), the mining combine moves along the roadway to the face. Then the executive body of the mining combine is set in motion. Its design should provide such speeds of rotation of the cutting disc 3 (Fig. 2) and portable rotation of the handle 2 (Fig. 2), at which the ratio of the speed of the portable rotation of the handle V _P to the rotation speed of the cutting disc V _D will determine the angle α of the cutters. An additional torque will occur when there is a cutting plane of the cutting disc spaced apart from the plane passing through the axis of rotation of the executive body of the mining combine at a distance Δ determined by the inequality:

Δ> R _lane ⋅tan (α)

In this case, the reaction from the face to the cutters (3) (Fig. 1) will affect the executive body of the mining machine over the shoulder, cut off from the horizontal axis by the reaction vector from the face.

It has been experimentally established that the absence of the disc removal at the distance Δ given above leads to the appearance of a force that prevents the transfer rotation.

In the process of work, the rock knocked off by the executive body, from the working soil, by means of the lower fender 4 (Fig. 2) is loaded onto the conveyor 5 (Fig. 2) and, depending on the loading scheme, is sent to the bunker, a reloader or a self-propelled car (not shown ).

It should be noted that the given configuration of the mining machine 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 solutions. For example, the mining machine according to the present invention is not limited to using only one actuator and / or only one stick (in FIG. 6). In Fig.3 - Fig.5 you can see illustrated several versions of the mining machine with two executive bodies with two handles with cutting discs on each.

Also, for the claimed mining machine in the form as it is described in the claims, there is a possibility of its manufacture and application using means and methods known before the filing date of the application.

The claimed invention can find wide application in the mining industry for carrying out mine workings, in particular, continuous roadheaders used in the extraction of minerals.

Claims (6)

A mining harvester containing a running gear, at least one executive body with at least one handle rotating at a speed V _P , with at least one cutting disk installed on it, rotating at a speed V _D , with cutters attached to it, a lower deflector and a conveyor ; - the said cutters are fixed on the said disc at an angle determined by the formula

- the mentioned cutting disk is installed on the handle in such a way that its cutting plane is parallel to the plane passing through the axis of rotation of the mining machine's executive body, and is spaced from it in the direction of rotation of the handle at a distance Δ, which is determined by the inequality

, where R _lane is the radius of the portable rotation of the handle.

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