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A roadheader cutterhead suitable for extremely hard rock formations

A cutter head and stratum technology, applied in mining equipment, tunnels, earth-moving drilling, etc., can solve the problems of large rock-breaking load and limited rock-breaking efficiency of cutter head, so as to reduce the impact rock-breaking load, improve cutting stability and improve cutting performance. The effect of cutting efficiency and improving rock breaking efficiency

Active Publication Date: 2021-11-23
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cutter head still uses the traditional hob to break the rock. The rock-breaking load of the hob is too large when cutting the extremely hard rock formation, which is very limited in improving the rock-breaking efficiency of the cutter head.

Method used

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  • A roadheader cutterhead suitable for extremely hard rock formations
  • A roadheader cutterhead suitable for extremely hard rock formations
  • A roadheader cutterhead suitable for extremely hard rock formations

Examples

Experimental program
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] as attached figure 1 And attached figure 2 As shown, a roadheader cutter head suitable for extremely hard rock formations consists of an outer ring cutter head 1, an edge scraper 2, a serrated knife 3, an outer opening 4, an inner ring cutter head 5, impact teeth 6, and tines 7, The inner opening 8, the propulsion cylinder 9, the rotary motor 10 and the impact cylinder 11 constitute.

[0024] The outer ring cutter head 1 is in the shape of a ring column, and the inner hollow area is equipped with an inner ring cutter head 5, which is cylindrical, and the front end surface of the inner ring cutter head 5 is made concave; the outer ring cutter head 1 and the inner ring cutter head There is a certain gap between the ring cutterheads 5, and the inner ring cutterhead 5 can slide in the inner cavity of the outer ring cutterhead 1; The thru...

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Abstract

The invention discloses a boring machine cutter head suitable for extremely hard rock formations. The described roadheader cutter head suitable for extremely hard rock formations consists of an outer ring cutter head, an edge scraper, a serrated knife, an outer opening, an inner ring cutter head, impact teeth, tines, inner openings, a propulsion cylinder, a rotating motor and Impact cylinder composition. The outer ring cutter head first drives the serrated knife and the edge scraper to excavate a ring-shaped tunnel, and then the inner ring cutter head drives the impact teeth and the tines to utilize the air surface Impact the rock in the middle area to realize the efficient rock breaking of the roadheader.

Description

technical field [0001] The invention relates to the technical field of tunnel boring machine cutterheads, in particular to a boring machine cutterhead suitable for extremely hard rock formations. Background technique [0002] Tunnel boring machine is a huge high-end equipment that integrates tunneling and support, and is widely used in various complex rock formations. The tunnel boring machine mainly relies on the cutter head and the hob installed on the cutter head to break rock, and its rock breaking performance directly determines the overall working performance of the tunnel boring machine. [0003] my country has a vast territory and complex geological conditions. Especially in the recent development of excavation towards deep strata, the rock formations encountered by roadheaders are becoming more and more complex, and the strata encountered are characterized by high strength, high ground stress and high quartz content. When the roadheader encounters this kind of extr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10
Inventor 张旭辉李建闽胡定邦夏毅敏刘明代礼奇
Owner HUNAN NORMAL UNIVERSITY
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