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On-line hob cutter abrasion detection method for boring machine

A detection method, technology of roadheader, applied in the direction of testing wear resistance, etc.

Inactive Publication Date: 2014-08-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To sum up, most of the current detection methods are aimed at detecting the normal wear of the hob, and do not involve the abnormal wear of the hob

Method used

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  • On-line hob cutter abrasion detection method for boring machine
  • On-line hob cutter abrasion detection method for boring machine
  • On-line hob cutter abrasion detection method for boring machine

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Embodiment Construction

[0040] The specific implementation of the present invention will be described in detail below with reference to the drawings and technical solutions. The hob is the most consumed consumable during the use of the roadheader. The hob of the roadheader is divided into normal wear, chord eccentric wear, blade eccentric wear, cutter ring fracture and cutter ring displacement according to the wear condition during operation. The characteristic of normal wear is that the degree of wear of the surrounding parts of the hob cutter ring is basically the same, which is the main form of tool failure, which mainly occurs in relatively simple and uniform geological formations; both chord and edge wear are rolling The eccentric wear of the knife is caused by the inconsistent degree of wear of the various parts around the hob ring. There are three types of chord eccentric wear, unilateral eccentric wear, multilateral eccentric wear, and bearing wear. Unilateral eccentric wear means that the ho...

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Abstract

The invention discloses an on-line hob cutter abrasion detection method for a boring machine, belongs to the field of tunnel construction machine, and relates to the on-line hob cutter abrasion detection method for the boring machine, which adopts various sensor devices. The detection method can determine and detect normal hob cutter abrasion and various abnormal abrasion states; according to a detection device adopted by the detection method, an upper displacement sensor device is bonded to or screwed with an upper left groove in a tool apron; a lower displacement sensor device is bonded to or screwed with a lower left groove in the tool apron; a speed sensor device is bonded to or screwed with a lower right groove in the tool apron. The on-line hob cutter abrasion detection method, provided by the invention, can detect so as to timely discover abrasion failure and reaching limit abrasion during the using process of the hob cutter, so as to timely replace the hob cutter and increase the excavation efficiency; therefore, the on-line hob cutter abrasion detection method has important significance to prolong the service life of tunnel excavation equipment.

Description

Technical field [0001] The invention belongs to the field of tunnel construction machinery, and relates to a method for online hob wear detection using multiple sensor devices. Background technique [0002] The hob is a rock-breaking tool of tunnel boring machinery, and is a key component and vulnerable part of the boring machine. Due to the complexity of the geological conditions and the harsh working conditions, the hob is the most consumed consumable during the use of the roadheader, and it is also the bottleneck restricting the efficiency of the excavation. The consumption of the cutter will account for about 30% of the machine price. The hob must be replaced when the cutting edge is damaged or dropped due to wear. Otherwise, the failure of one hob will cause other hobs to fail due to overload. This will seriously affect the construction efficiency. The rock breaking efficiency of a hob is related to the width of the cutting edge of the hob. As the wear of the hob ring incr...

Claims

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Application Information

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IPC IPC(8): G01N3/56
Inventor 霍军周王亚杰李广庆
Owner DALIAN UNIV OF TECH
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