Excavation type tunnel excavator

Abstract

The invention discloses an excavation type tunnel excavator comprising a working mechanism, a travel mechanism, a hydraulic system (22), an electrical system (23) and an operating mechanism, wherein the working mechanism comprises a bucket or a percussion hammer (1), a quick change frame (19), a chain frame I (2), a chain frame II (9), a bucket oil cylinder (3), a small arm (4), a small arm oil cylinder (5), a large arm oil cylinder (6), a large arm seat (7), a large arm (8) and a rotating oil cylinder (18), wherein the large arm seat (7) is connected with a stand through a double-layer pin shaft device; and the travel mechanism comprises a guide wheel (10), a pedrail (11), a stretching device (12), a pedrail beam (13), a carrier wheel (14), a driving wheel (15), a thrust wheel (17) and a travel motor (16). The invention can fast replace the bucket or the percussion hammer (1) during work and has double purposes with one machine, thereby enhancing the excavating efficiency and reducing the excavating expense cost. The invention not only has compact structure, high using reliability, good durability and long service life, but also has high excavating efficiency, is suitable for the non-blasting excavation of rock stratums of rock tunnels and can be also used for the direct excavation of IV and V class wall rocks of non-coal beds.

Description

technical field [0001] The present invention relates to an excavator, in particular to an excavation-type roadway boring machine for directly digging with a bucket for roadway excavation without blasting in coal seams of coal mines and roadway excavation without blasting in Class IV and V surrounding rock geology. . Background technique [0002] With the continuous innovation of science and technology, the rapid development of economy and the continuous progress of social civilization, the degree of mechanization of coal roadway and rock roadway excavation is getting higher and higher. The coal roadway excavation of the existing large and medium-sized coal mines adopts mechanical equipment such as the rotary arm type roadheader and the coal roadway roadheader. Manually load coal or mechanically load slag to the scraper conveyor or transport vehicle to implement roadway excavation. The rotary arm type roadheader has a large investment and has high requirements for coal seam ...

AI Technical Summary

Problems solved by technology

The coal roadway excavation of the existing large and medium-sized coal mines adopts mechanical equipment such as the rotary arm type roadheader and the coal roadway roadheader. Manually load coal or mechanically load slag to the scraper conveyor or transport vehicle to implement roadway excavation. The rotary arm type roadheader has a large investment and has high requirements for coal seam roadways. It is not suitable for coal roadway excavation in medium and small coal mines. Coal roadway excavation in small coal mines basically adopts the original mining method of blasting operation and manual coal loading, which has hidden dangers of gas explosion safety in high-concentration gas coal mines. For the excavation and excavation of roadways in Class IV and V surrounding rocks, it is currently used in China. The blasting operation causes a lot of over-excavation or under-excavation to the rock roadway, wastes a lot of concrete backfill and a lot of manpower, material resources and financial resources, and at the same time shakes the rocks around the loose rock roadway, burying safety hazards for the roadway collapse. Construction companies have been looking forward to this type of equipment for many years the advent of

The working mechanism of the existing series of roadheaders is connected by a single pin. After the working arm works for a certain period of time, the working stability is reduced. The function of the bucket is single. Digging efficiency is not high when digging inclined wells with high inclination angle

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