Research of frequency converters energy characteristics of drilling rigs

Vasiliev, B. Yu.; Калашников, О. В.; Oleynikova, A. M.; Ivanovsky, Anastasia; Grudinin, N. N.

doi:10.1088/1755-1315/87/3/032051

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Strength predictions of dismountable drill bit of spherical type were based on finite element model in ANSYS environment with maximum forces and moments (Pax=750 kN , Mimp=6.5 kNm) generated by modern high efficient drilling rigs (CAT MD6750) [11] as well as their heterogeneous distribution over drill bit elements upon interaction with borehole bottom.…”

Section: A General Descriptionmentioning

confidence: 99%

Stressed State of Elements of Dismountable Drilling Tool with Spherical Cutters: Simulation in Software Environment

Bovin*,

Shigin,

Kritsky

et al. 2019

IJITEE

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Advance in extraction of mineral resources is one of the most prioritized problems of mining industry in Russia and other countries. Herewith, drilling and blasting operations are the most important mining stages, the relevant expenses reach up to 50% of total mining costs. Drilling tool is the most important and highly loaded element of drilling assembly determining the efficiency of blasthole drilling. Existing designs of drill bits of Russian and foreign manufacturers are nondismountable, that is, are beyond repair or reclaim, especially in field conditions. For instance, in the case of failure of one bearing support, the drill bit fails and is rejected. Despite numerous types of drilling tools, their stressed state has been studied sufficiently only for serially fabricated drill bits. Therefore, it is important to study strength properties of dismountable drilling tools which provide the maximum operation lifetime of the basic parts (body and coupling). Complete information about loads acting on the main elements of drill bits is required to improve designs of dismountable drilling tools. This work analyzes stress and strain state of dismountable drill bits with spherical cutters (RSShD) using finite element models in ANSYS software environment. Predictions are made for the cases of maximum loads exerted by highly efficient drilling rigs on the drill bit and heterogeneous distribution of these loads over elements of the drill bit. Distributions of equivalent stress fields occurring in drill bit body, bearing supports and cutters are presented. Drill bit operability in various operation modes is analyzed

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Section: A General Descriptionmentioning

confidence: 99%

Stressed State of Elements of Dismountable Drilling Tool with Spherical Cutters: Simulation in Software Environment

Bovin*,

Shigin,

Kritsky

et al. 2019

IJITEE

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show abstract

“…the network operation is based only on the request-response principle. The master device can also distribute a broadcast request addressed to all the network devices; in such case the response message is not sent [1]. At the link layer, the Modbus protocol allows the presence of one master and up to 247 slave devices in the structure.…”

Section: Modbusmentioning

confidence: 99%