Four-roller coal cutter adopting double-roller cutting parts

Abstract

The invention discloses a four-roller coal cutter adopting a double-roller cutting parts. The four-roller coal cutter comprises a right cutting part and a left cutting part which have the same structure, a right drawing part and a left drawing part which have the same structure, a right traveling part and left traveling part which have the same structure, as well as a middle control cabinet, wherein each cutting part comprises two cutting rollers, namely a dextrorotary cutting roller and a laevorotatory cutting roller; the rotation directions of each dextrorotary cutting roller and each laevorotatory cutting roller are opposite. According to the coal cutter adopting double- roller cutting part, provided by the invention, the two rollers are arranged on each cutting part, so that the total coal accommodating ratio is increased; the rotation directions of every two cutting rollers are opposite, so that the radial ejection of a coal block can be effectively prevented, and coal charging is further facilitated; the coal cutting and charging efficiency is greatly improved, the cutting teeth utilization ratio is improved, the service life of the whole machine is prolonged, the operation of the whole machine is stable, the coal charging effect is excellent, and the failure rate is low.

Description

technical field [0001] The invention relates to a coal shearer, in particular to a four-drum shearer with a double-drum cutting section. Background technique [0002] The double-drum thin coal seam shearer has been adopted by various large, medium and small coal mines due to its safety and high efficiency advantages, such as figure 1 The double-drum thin coal seam shearer shown includes the right cutting part a7 and the left cutting part a8 with the same structure, the right traction part a9 and the left traction part a10 with the same structure, the right traveling part a11 and the left traveling part with the same structure part a12, and the middle control box a13, the right travel part a11 and the left travel part a12 are respectively fixedly installed on the sides of the right traction part a9 and the left traction part a10, and the right traction part a9 and the left traction part a10 are respectively docked on On both sides of the middle control box a13, the right cut...

AI Technical Summary

Problems solved by technology

[0003] When this kind of double-drum shearer is used in the mining process of thin or extremely thin coal seams less than or equal to 1.3 meters, problems will appear. Due to the thin average coal seam, the height of the shearer is low, the diameter of the drum is small, and the coal flow Due to the small unloading cross-section and other reasons, the coal loading effect is not good and the amount of floating coal is large, which seriously restricts the further increase of production.

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