Compound cantilever excavator

Abstract

The invention relates to an excavating machine, and especially relates to a compound cantilever excavator. The excavator comprises an excavator body, an excavating mechanism, a travelling mechanism, a hydraulic system, an electrical system, a conveying mechanism and a dedusting system, wherein the excavating mechanism comprises cutting heads and a cutting arm, the cutting heads are positioned on the top of the cutting arm, and the lower part of the cutting arm is movably fixed on the body of the excavator; the travelling mechanism comprises a power machine and a crawler belt positioned under two sides the body of the excavator; and the upper part of the excavating mechanism is provided with an impact fragmenting mechanism, and the impact fragmenting mechanism comprises a hydraulic cylinder and a fragmenting hammer positioned on the top of the hydraulic cylinder. According to the compound cantilever excavator of the invention, service lives of cutting teeth can be prolonged, so the cost of the whole excavator is reduced; the working environment of workers is improved, so the body health of the workers is protected; and the application range of the cantilever excavator is substantially widened, so the cantilever excavator has a wide market prospect.

Description

technical field [0001] The invention relates to a tunneling machine, in particular to a compound cantilever tunneling machine. Background technique [0002] At present, the hardness of the heavy-duty cantilever roadheaders used in the domestic market is generally below 100 MPa, the cutting hardness of the heavy-duty cantilever roadheaders is generally 60-80 MPa, and the small cantilever roadheaders are even around 40 MPa. Even for heavy-duty cantilever roadheaders, once the rock hardness exceeds 100 MPa, the picks will wear out quickly, and the excavation speed will also drop significantly. When encountering large rocks during excavation, it is also a challenge for the roadheader. Therefore, improving the tunneling speed of the cantilever roadheader is currently the main development direction of coal roadway tunneling. However, due to the accelerated tunneling speed, the wear of the picks is too fast. Therefore, how to achieve tunneling efficiency and improve the life of th...

AI Technical Summary

Problems solved by technology

Therefore, increasing the tunneling speed of the cantilever roadheader is currently the main development direction of coal roadway tunneling. However, due to the accelerated tunneling speed, the wear of the picks is too fast. Therefore, how to achieve tunneling efficiency and improve the life of the picks is an urgent problem to be solved.

For example, Chinese patent: 200710012409.5 hard rock roadheader, only cutting head, cutting hardness is not high, and the excavation efficiency is low. Therefore, the scope of application of such roadheader is relatively narrow

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