Raw coal transportation and crushing system for coal mine underground workers

Abstract

A gate roadway loader raw coal transporting and crushing system for underground coal mining comprises a scraper conveyer, a gate roadway loader and a belt conveyer which are sequentially connected end to end from right to left. A supporting connection piece and a roll crushing mill are arranged between the unloading end of the gate roadway loader and the self-advancing tail of the belt conveyer. A movable connection piece is arranged between the roll crushing mill and the self-advancing tail of the belt conveyer. According to the gate roadway loader raw coal transporting and crushing system for underground coal mining, the roll crushing mill and the gate roadway loader synchronously move at the self-advancing tail of the belt conveyer through the supporting connection piece and the movable connection piece; and not only can the gate roadway loader and the roll crushing mill move at the self-advancing tail of the belt conveyer, but also the position between the roll crushing mill and the unloading end is fixed relatively, and squeezing and crushing of materials are achieved.

Description

technical field [0001] The invention relates to the technical field of conveying and crushing underground materials in coal mines, in particular to a raw coal transporting and crushing system of a trough transfer loader for coal mine underground workers. Background technique [0002] In the domestic coal sales market, the price of lump coal is generally higher than that of fine coal, and the sales are in short supply. Under the existing mechanized coal mining technology, the most destructive link to the raw coal lump coal rate of the working face is the underground transport and crushing link. [0003] Existing down-trough transportation crushing system 40, such as Figure 7 , the wheel or hammer crusher 41 is mostly used, and the wheel or hammer crusher 41 is arranged above the landing section 421 of the trough transfer machine 42, and the crushing hammer head rotating at high speed performs impact crushing on the passing raw coal , This crushing method has the problem of l...

AI Technical Summary

Problems solved by technology

[0003] Existing down-trough transportation crushing system 40, such as Figure 7 , the wheel or hammer crusher 41 is mostly used, and the wheel or hammer crusher 41 is arranged above the landing section 421 of the trough transfer machine 42, and the crushing hammer head rotating at high speed performs impact crushing on the passing raw coal , this crushing method has the problem of low lump coal rate. Generally, the lump coal rate of raw coal drops by about 15%, and the lump coal loss rate is relatively large.

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