Full-face machine

FIELD: mining; apparatus for making arched tunnels in underground mining of minerals.

SUBSTANCE: machine includes frame whereon an undercarriage and working element drive gearbox are mounted together with a rotary working head being attached to output shafts of said gearbox. The working head consists of borer, pitching borer, cross element, each end of its arms having a loading bucket with a bottom and sidewalls, and conveyer. The front face bottoms of two loading buckets positioned on opposite arms of said cross element are slopped forward with respect to the machine displacement vector, and those of the other buckets - slopped backward with respect to the same vector.

EFFECT: cleaning-up with the full engagement of the bucket cross-section area; reduction of impact loads for the cross element; reduction of heating and increased wear of the bearings in the working head drive gearbox of the machine.

7 dwg

 

The invention relates to equipment for carrying out mining arch sections in underground mining.

Known continuous miner containing a frame to which is attached the chassis, the drive gear of the Executive body, on the output shaft of which is fixed a rotary Executive body, consisting of borax, sabornie and crosses on each of the rays which are loading buckets with bottom and walls, conveyor, electrical and hydraulic system [1].

The disadvantage of such harvesters are large shock loads experienced by the rays of the cross because of the large friction forces during the implementation of the bottoms of the buckets in the rock mass, its further advancement into the bucket for loading broken ore on the conveyor of the combine, which causes overheating and rapid wear of the bearings of the drive gear of the Executive body.

The objective of the invention is the reduction of shock loads of crosses in the time of the introduction of the bucket in the broken rock mass to lift her from the ground, and together with the heat and increased wear of the bearings of the drive gear of the Executive body of the combine.

The technical result is achieved by the fact that the harvester mine tunnel containing a frame to which is attached the chassis, the drive gear of the Executive body, on the output shaft which is fixed a rotary Executive body, consisting of borax, sabornie and crosses on each of the rays which have a loading bucket with bottom and walls of the conveyor, the bottom of the front surface of the two loading buckets located on opposite rays crosses made with slant forward, with respect to the displacement vector of the harvester, while the other two buckets - with a slant backward relative to the same vector.

1 shows a harvester shaft sinking, figure 2 - rotary Executive body; figure 3 is its side view; figure 4 - element beam crosses the rotor of the Executive body with the ladle; figure 5 - section b-B in figure 4; figure 6 is a view As in figure 4 of the bucket with the bevel of the bottom forward with respect to the displacement vector of the harvester; figure 6 is a view As in figure 4 with the bevel of the bottom bucket back against the displacement vector processor.

Harvester shaft sinking contains a frame to which is attached the chassis, the gearbox 1 cutter drive 2 and conveyor 3.

The chassis of the harvester includes right and left crawler 4.

Gear 1 drive Executive body 2 is coaxially located two output shafts 5 and 6. The shaft 5 is made integral and installed Bourg 7 and zaboric 8. The shaft 6 is made hollow, it includes a cross-piece 9 with four rays 10. Each beam 10 9 crosses the edges are loading the buckets 11. Pogresan the th bucket 11 is composed of a bottom 12 and sides 13. The front surface of the bottom 12 of the two buckets 11 located on opposite rays crosses 9, the beveled forward with respect to the displacement vector of the harvester, while the other two buckets 11 - angled backward relative to the same vector, so that the start of the capture of ore from the soil buckets 11 alternates through one.

Harvester shaft sinking works as follows.

Zaboric 8 and Bur 7 Executive body 2 of the harvester mounted on a solid output shaft 5 of the gear 1, rotate in one direction, and the cross-piece 9 with the beams 10 and the bucket 11, mounted on the hollow output shaft 6 of the gear 1 in another. When the machine travels on the face by a driving trucks 4 crawler zaboric 8 and Bur 7 beat the ore from the mountain massif, which is strewed on the ground. During rotation of the spider 9 rays 10, and with them the buckets 11 are moved along the diameter of the Executive body 2. When the bucket 11 in turn affect soil, embedded in lying on her mountain loose mass, filled it up to the height of the flanges 13, move along the circle, raising it to the level of the conveyor 3, and, reaching the top point of its trajectory, to be up head 12, while the rock mass is poured on the conveyor 3.

During the implementation of the bucket 11 in lying on the ground the rock mass having a large friction force between the bottom 12 of the bucket 11 and the a priori mass and within the rock mass between its own particles. But by reducing the cross-section of the front surface of the bottom 12 of the bucket 11, the friction forces occur first on a small area of contact gradually, with the introduction of the bucket 11, extending across the surface of the bottom 12. This provides a smoother, almost unaccented Executive authority 2.

To ensure purity of podgrebya soil buckets 11 are beveled front surface 12 with the same direction of the bevel on the opposite rays 10 crosses 9 pairs so that the buckets 11 rays set with sequential alternation of the direction of the bevel of the bottom 12.

Thus, the Stripping of the soil is to capture the entire cross-sectional area of the bucket, but with less shock loads.

Sources of information

1. The operation of the digging machine PC-8M / Kaahani, Vthread, Whiteline and others; ed. 2nd, revised and enlarged extra - M.: Nedra, 1978. - P.5-7, 23-33.

Harvester mine tunnel containing a frame to which is attached the chassis, the drive gear of the Executive body, on the output shaft of which is fixed a rotary Executive body, consisting of borax, sabornie and crosses on each of the rays which have a loading bucket with bottom and walls, conveyor, characterized in that the bottoms of the front surface of the two loading buckets located on protivopolojna the x rays crosses, made with a slant forward with respect to the displacement vector of the harvester, while the other two buckets with a slant backward relative to the same vector.



 

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