Step-tooth excavating method of reciprocating impact excavators, and step-tooth reciprocating impact excavator used for realizing step-tooth excavating method

Abstract

The invention belongs to the field of machinery, is especially suitable for the field of excavating, and specifically relates to a step-tooth excavating method of reciprocating impact excavators, and a step-tooth reciprocating impact excavator used for realizing the step-tooth excavating method. The step-tooth reciprocating impact excavator comprises a machine body, a travelling mechanism, an impact blanking mechanism and the like; the impact blanking mechanism is arranged on the machine body; and the travelling mechanism is arranged on the lower part of the machine body. The impact blanking mechanism comprises a step-tooth impact-cutting device, an impact power box, a power impact part, an impact guiding element and the like; step teeth are formed by adjacent impact teeth arranged on the step-tooth impact-cutting device. The step-tooth impact-cutting device is driven by the power impact part, material to be excavated is impacted to be step shaped so as to obtain two or more opposite free faces, and pressure stress and / or structural strength relative to original material is reduced greatly. When the impact teeth is used for excavating for another time, the two or the more opposite free faces are used for reducing impact resistance greatly; generation of oversized material blocks, which fall because of excavating, is avoided; impaction efficiency is increased, and equipment depreciation is reduced.

Description

technical field [0001] The invention belongs to the field of machinery, and is especially suitable for the mining field, and in particular relates to a mining method using stepped teeth for a reciprocating impact mining machine and a stepped tooth reciprocating impact mining machine for implementing the method. Background technique [0002] Existing mining equipment increases the mining width in order to increase the mining volume. The method of increasing the mining width is to widen the mining mechanism or set the mining mechanism as a multi-layer mining mechanism. After increasing the mining width, the impact of the pick on the mining mechanism The compressive stress and / or structural strength are greatly increased due to the excessive thickness of the material layer, which makes it difficult for the mining mechanism to excavate the excessively thick material layer, and increases the resistance of the mining mechanism to advance, and in severe cases, the mining cannot be c...

AI Technical Summary

Problems solved by technology

[0002] Existing mining equipment increases the mining width in order to increase the mining volume. The method of increasing the mining width is to widen the mining mechanism or set the mining mechanism as a multi-layer mining mechanism. After increasing the mining width, the impact of the pick on the mining mechanism The compressive stress and / or structural strength are greatly increased due to the excessive thickness of the material layer, which makes it difficult for the mining mechanism to excavate the excessively thick material layer, and increases the resistance of the mining mechanism to advance, and in severe cases, the mining cannot be carried out continuously. It is difficult to meet the needs of ensuring safe production, improving production efficiency, reducing energy consumption, and reducing equipment loss by using a wide mining mechanism or setting the mining mechanism as a multi-layer mining mechanism to increase the amount of mining.

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