RU2000431C1 - Heading machine actuating drive - Google Patents

Abstract

Usage: mining machines during mining and coal mining underground method. SUMMARY OF THE INVENTION: A planetary gearbox is installed between the cutting crowns and the intermediate gearbox and has, for example, three additional gears. Crowns are mounted on the shafts of the latter, and the gears are mounted to interact with the satellite of the corresponding gear. The planetary gear housing is equipped with a screw-shaped lid rigidly fixed to the carrier. The shafts. on which the crowns are fixed, parallel to the axis of the drive shaft. The cutters on the cutting crowns are arranged along a tangent circle, the radius of which is equal to the sum of the distance from the axis of the drive shaft to the axis of the cutting crown and the radius of the cutting crown. 3 ill.

Description

The invention relates to mining equipment and can be used in the mining industry for mining workings by roadheaders and for underground mining of coal.

An executive body of a roadheader is known, including an arrow, a shaft installed in the arrow body, a rock cutting crown mounted on the shaft by means of a spline sleeve with a drive and an elastic element for power closing the mechanism.

The disadvantage of this organ is that the crown cutters quickly wear out when working on rocks with a higher than average strength, as the crown cutter is in contact with the rock for a length equal to half the circumference of the drum, as a result it is subject to strong heat. In addition, low productivity, strong dust formation are many.

An executive body of a roadheader is known, including an arrow, a hollow crown with a cutting disc and a cup, connected by means of a cardan joint to the drive shaft, on which the disk with a ball handle for eccentrically mounted on the outer surface is mounted, while the disk is connected to the drive shaft. by means of a planetary gear located in the cavity of the crown.

The disadvantages of the organ are that it works on weak and medium breeds, low productivity and reliability.

The closest technical solution to the proposed one (prototype) is an executive body of a mining machine, including cutting crowns, a planetary gear with satellites, a sun wheel, a carrier mounted inside the crown, drive wheels, and a drive shaft. bevel wheels, while the cutting crowns are mounted to interact with each other by

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ABOUT

drive wheels on carriers the drive axles of which are angled, and the drive wheels are fixed / young n, h carrier. and the sun wheel interacts with the drive shaft via bevel wheels.

A drawback of the executive body is that. almost it cannot be used on rocks with a fortress above the average, because crowns wear out quickly due to the fact that the tooth is constantly in contact with the breed and heats up. In addition, the gearbox is installed inside the crown, at E, when the crown or gearbox is out of order, it is necessary to disassemble all the executives, which requires a lot of time of high qualification and laboriousness

The aim of the invention is to increase the destruction efficiency of rocks of different strengths, especially above average strength, in a selective manner, to increase productivity and reduce labor intensity.

The goal is achieved, see that the executive body of the mining machine, including cutting crowns with cutters, a planetary gearbox with a single shaft, a sun wheel, a carrier and a drive shaft, a planetary gearbox is mounted between the crowns and an intermediate gearbox and additionally contains parasitic gears, for example three, each parasitic the gear of which is engaged only with the satellite of the corresponding gear and has an end cover with helical ribs, covering the housing and rigidly fixed to Dilo, cutting bits are mounted on the shafts at these spurious transmission axes thereof are parallel to the axis of the drive Ral, working blades cutting bits raspolozhony tangent to a circle whose radius is equal to the sum of the distance from the axis of the drive shaft to the cutting bit axis and radius cutting bit

Comparative analysis with the prototype shows that the proposed body differs in the installation location of the planetary gear, the presence of new parasitic gears, for example three, yciai-yuvka additional cutting crowns their location, the presence of the end cover and the interconnection of the elements

Comparison of the proposed solution with other technical solutions shows that the introduction of spurious gears is known. However, when introducing in this connection with the other elements, the executive body of the turner of the combine harvester, the parasitnal sheslerm newer

properties of chgo leads to the destruction of rocks with a strength above an average increase in productivity and a decrease in the complexity of the selective method of destruction

mountain masses

The installation of a planetary gear between the cutting crowns and the intermediate gear allows to reduce its dimensions, reduce the complexity of the repair and replacement, and leads to ease of use

Placing additional spurious gears, for example three, on the shafts of which cutting crowns are mounted, for example

5 three. allowing d to combine the rotation of the carrier with the rotation is short, since the linear speed of the executive opiana increases. I.K the linear speed of each clove of the cutting crowns when meeting with the slope of the slope 0 consists of two components1 linear speed of the carrier and the linear speed of the cutting of crowns, which results in an increase in juppimi impact. In addition, with this design, each clove of cutting crowns

5 is in engagement with the rock for a short time, the principle of destruction is shock-cleaving, which allows to increase the efficiency of destruction of various / rocks and work on rocks with a higher strength

0 middle fraction will be uniform

Rigid installation of the end cap on the VODILR with screw-shaped ribs increases the strength, reliability of the structure and promotes better loading of the rock mass. Parallel arrangement of cutting crowns relative to the axis of the drive shaft allows the installation of cutting crowns perpendicular to the plane of the face; as a result, the proposed executive body can process selectively, moreover, the face can be processed in any form with a high speed, which significantly improves productivity.

5 Thus, the proposed set of features allows to increase the efficiency of destruction of rocks of different strengths, especially the strength above average increases productivity,

0 reduces labor intensity and improves fraction. FSH I shows a view of the executive body of the mining machine, FIG. 2 is the same section in FIG. 3, section AA in FIG. 2. Executive mining machine oryn

5 has, for example, three cutting crowns 1 with cutters a planetary gear 2. an intermediate gear 3 whose shaft is connected to the drive shaft 4 of the planetary gear 2 The latter consists of the housing rj Bbino.iHtMiiii.To in the HI hole ring with internal teeth, which is rigidly fixed, for example, by bolts to the boom of the combine, the drive shaft 4, made in the form of a splined shaft, mounted in rolling bearings installed in the bores of the carrier 6, the sun gear 7. mounted on the drive shaft 4, which is engaged with the satellites 8, ( three gears - satellites) sitting on splined shafts 9. the ends of which are mounted on bushes mounted in the carrier 6. Satellites 8 are engaged with the stationary crown of the housing 5. The gearbox contains spurious gears, for example three, each of which consists of a spurious gear 10, sitting on a spline shaft 11, one end of which is fixed in the bearings, rolling bearings installed in the bores of the carrier b, and on the other end of the spline shafts 11 there are cutting crowns 1 with cutters, mounted on the shaft cone with dowels and a bore, end kry ki 12 with helical ribs. The cover covers the housing 5 and is rigidly fixed, for example, by bolts to the carrier 6, the axes of the cutting crowns 1 being parallel to the axis of the drive shaft, and their working teeth located on a tangent circle whose radius is equal to the sum of the distance from the axis of the drive shaft to the axis of the cutting crown and radius cutting crown.

The executive body of the mining machine works as follows.

The drive shaft is rotated from an intermediate gearbox 3 (arrows of a roadheader or a rotary gearbox of a mining combine), the sun gear 7 drives the satellite 8, for example three, which are rolled around the body 5 (crown), drive the carrier 6. The parasitic gears 10, being engaged with the satellites 8, rotate the cutting crowns with cutters, while the direction of the linear velocity vector of the crown 1 coincides with the direction of the carrier velocity vector, which allows full use drive power for breaking rock cutters because velocity vectors are summed. The cutting crowns 1, rotating relative to the axis of their shafts and the axis of the carrier, destroy the rocks with cutters, and the destruction of the rocks is carried out by impact-shearing and only by those cutters that are on a tangent circle whose radius is equal to the sum of the distance from the axis of the drive shaft to the axis of the cutting crown and the radius of the cutting crown.

The process of rock destruction is carried out as follows.

The executive body is fed into the chest of the head and its eagulation is performed at a distance equal to the length of the incisor crowns, after which the 0 executive body is moved and the rock is destroyed: to the right, left, up, down to give the required shape, when the executive body is below additional production

5 discharging the rock mass with cover 12. The cycle is then repeated.

The proposed device allows to increase the efficiency of destruction of rocks of various strengths, especially breeds with a strength above average, they can destroy rocks with a strength of more than 10 to 10 in a selective way, Increases productivity compared to the prototype and 1.5-2 times, reduces labor, extends the area mining combine application. In addition, the grade of coal improves, the fraction becomes more uniform with fewer pits.

Claims (1)

Brethren Formula The executive body of a mining combine, including cutting crowns with cutters, a planetary gearbox with satellites, a sun wheel, a carrier and an intermediate gearbox with a drive shaft, and so on. that, in order to increase the resolution efficiency of rocks of various strengths, especially above average strength, increase productivity and reduce labor intensity, the planetary gear is installed between the cutting crowns and the intermediate gear and has, for example, three additional gears, on the shafts of which the crowns and gears are mounted installed with the option 5 interacting with the satellite of the corresponding gear, while the planetary gear housing is equipped with a cover with screw-shaped ribs, rigidly mounted on the carrier, shafts on which crowns are fixed, 0 are parallel to the axis of the drive shaft, and the cutters on the cutting crowns are located on a tangent circle whose radius is equal to the sum of the distance from the axis of the drive shaft to the axis of the cutting crown and the radius of the cutting 5 crowns. ei // / MO) e 1 suoog L-a Fig.Z