Coal roadway tunneling machine with double round cutter heads

Abstract

The invention discloses a coal roadway tunneling machine with double round cutter heads. The coal roadway tunneling machine comprises round cutter heads, a shield, a scraper conveyer, an annular girder, an anchor rod drilling machine, a girder beam, supporting shoes, a rear support and a belt conveyor, wherein the cutter heads of a host machine employs double round cutter heads which are arranged in a staggered way; the length between two crossing points where two rounds are overlapped is the height of the section of a rectangular roadway. An operator carries out anchoring operation under the shield so as to realize the safe production. A thrust cylinder provides a reacting force through the supporting shoes which are tightly supported against the side wall; a thrusting force acts on the cutter heads through the crossbeam of the host machine cutter; the supporting shoes are matched with rear support, thereby realizing the continuous tunneling of the whole coal roadway tunneling machine. Cut coals and rocks are conveyed out of a feed bin through the scraper conveying machine. The coal roadway tunneling machine with double round cutter heads has the advantages of fast tunneling speed, low abrasion of cutters, integrated construction of tunneling and anchoring, etc. and the cost of unit tunneling number is greatly reduced. In addition, tunneling and anchoring are carried out simultaneously, therefore, the continuous operation is realized, and the labor productivity is improved.

Description

technical field [0001] The invention relates to a mechanical equipment for tunneling and anchoring with a rectangular section, in particular to a mechanical equipment for synchronous operation of tunneling and anchoring and integrated excavation and anchoring, that is, a double-circular cutter head coal roadheader. Background technique [0002] Most of the current coal mine roadway excavation equipment and anchoring equipment are operated independently. Even if there is a certain degree of combination, due to the inevitable contradiction between the space position requirements between the excavation and anchoring, it is impossible to maximize their respective functions. The best performance, its disadvantages are: 1. After a certain progress in the excavation, the roadheader must withdraw to let the bolter enter the anchoring operation. After the anchoring operation is completed, the roadheader can enter the next round of excavation, or The roadheader must stop after digging...

AI Technical Summary

Problems solved by technology

[0002] Most of the current coal mine roadway excavation equipment and anchoring equipment are operated independently. Even if there is a certain degree of combination, due to the inevitable contradiction between the space position requirements between the excavation and anchoring, it is impossible to maximize their respective functions. The best performance, its disadvantages are: 1. After a certain progress in the excavation, the roadheader must withdraw to let the bolter enter the anchoring operation. After the anchoring operation is completed, the roadheader can enter the next round of excavation, or The roadheader must stop after digging for a certain distance, and continue to drive forward after the anchoring operation is completed. This operation method seriously affects the tunneling efficiency; Entering the anchorage operation, resulting in the lengthening of the empty head distance, especially in the case of poor geological conditions, which increases the danger of the operators and is not conducive to safe production; 3. Most of the current coal mine roadway excavation equipment is cantilever roadheader, Machines, etc., the cutting range is not the full section, and cutting with picks, the cutting efficiency is low for coal rocks with high hardness, the service life is greatly shortened, and the tunneling efficiency is relatively low; 4. The current roadheaders are all Open type, in the process of coal roadway excavation, even if the ventilation conditions are good, it will inevitably produce a huge amount of dust, which is not conducive to the health of the workers; 5. The operation mode of the bolter has not formed a large-scale, Modularization, resulting in prolonged anchoring time and low anchoring efficiency; 6. Operators do not have certain protective measures during the operation

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