Cutting mechanism for multi-arm hob-type continuous tunneling machine

Abstract

The invention belongs to the technical field of cutting mechanism of tunneling machine, particularly provides a cutting mechanism for a multi-arm hob-type continuous tunneling machine, and solves the problems of an existing cutting mechanism of a continuous tunneling machine, such as unsuitability for hard rock tunnel and low rock breaking efficiency. The cutting mechanism comprises a slewing bearing, three outer rotation arms, an inner rotation arm, a disc hob and a swinging cylinder. The slewing bearing comprises an inner ring and an outer ring; the outer ring is fixed on a frame of the tunneling machine; the inner ring is connected to a motor output shaft of the tunneling machine; and outer rotation arms and the inner rotation arm are hinged to the inner ring through pins. The invention has beneficial effects of solving problems of weak rock breaking effect and low production efficiency of a longitudinal tunneling machine, reducing dust generation, improving cutting efficiency, and realizing forming of different section contours.

Description

technical field

[0001] The invention belongs to the technical field of cutting mechanisms of roadheaders, and in particular relates to a cutting mechanism for multi-arm hob type continuous roadheaders. Background technique

[0002] The cutting mechanism of the existing roadheader is mainly the vertical axis type and the horizontal axis type. The cutting tool used on the cutting mechanism is a pick-shaped pick. The working principle of the pick-shaped pick is like a pick tip wedge like a rock mass. Compressive strength, because the compressive strength of rock is much greater than its tensile strength, so the current cutting method results in high specific energy consumption, less applicability to hard rock roadway cutting, and low rock breaking efficiency. Contents of the invention

[0003] The purpose of the present invention is to solve the problem that the cutting mechanism of the existing roadheader cannot be applied to the hard rock roadway and the rock breaking e...

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