Design and industrial testing of innovative nonexpendable picks for cutter-loaders
| Parent link: | Eurasian Mining № 2.— 2019.— [P. 59-63] |
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| Corporate Author: | |
| Other Authors: | , , , |
| Summary: | Title screen The tendency of increasing dimensions of cutter–loader picks results in manydepartures of the machine from face area during rock breaking in mines. This is governed by the current structure of the tangential rotary picks making their repair andsecond use impossible. The studies of the mechanisms and degree of the pick wearyield the proposal of the new design aimed at essential extension of life time of therock-breaking tool. In the developed split pick design, up to 80% of the tool is usablemany times. The working part subjected to abrasive wear and making 20% of the pickweight and length is replaceable after wear of the tungsten carbide nose.The experimental pilot picks of the spit design were tested in cutting coal (withadjacent rocks with hardness f = 5–6) in a Kuzbass mine in December 2017. Thetests proved availability and repairability of the proposed design. No detachment ofthe replaceable heads from their shank ends was observed. During the tests, the cutter–loader broke 7500 t of rocks. The picks underwent 4–5 replacements of the wornout heads while preserving their shape and workability. |
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2019
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.17580/em.2019.02.13 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661648 |