Về một số phương pháp nghiệm bền một số chi tiết và cụm chi tiết bộ giá khoan dùng để khoan tạo lỗ

SClENCETECHNOLOGYl

VE MOT PHl/ONG PHA P NGHIEM BEN MQTSO CHI TIET VA

CUM CHI TIET BQ GlA KHOAN DUNG DE KHOAN TAO L 5 NO

MIN TRONG KHAI THACTHA N HAM LO VUNG QUAN G NINH

A METHOD FOR MODELING STRENGTH OF DRILLING TRIPOD USED FOR HOLING BLAST OF COAL MINING

IN QUANG NINH AREA

Le Quy Chien,

Dinh Van Chien

Tom tiit

Cd nhieu phUdng phap nghiem ben cac chi tiet va may. Trong bai bao nay, nhom tacgiS trinh bay phuong

phap nghif m ben mot so chi tiet, cum chi tiet bo gia khoan dimg de khoan tao 16 no min trong thi eong

dudng 16 CO b^n khai th^c than viing Quing Ninh bang phin mem ANSYS, Ket qua nghien ciifu dUOc dimg

de tinh toan dung cu khoan, eac ehi ti^t, cum ehi tiet hb gia khoan va nghidm ben mpt so cum ehi tiet cua

thiet bj khoan,

Tif khoa: Bp gia khoan, tao lo, no min, khai thac than, dung cu khai thac mi).

Abstract

There are a lot of methods employed to determine the strenght of components ofa machine. In this paper,

the method for modeling strength of drilling tripod that was used for holing blast of coal mining in Quang

Ninh area by employing ANSYS software is presented. The result can be used for designing and analysis

of drill tools. It also can be used to checking for strength of drilling parts.

Keywords: Drilling tripod, create holes, blast, coal mining, drill tools in mining.

ThS. Le Quy Chien, TrU(mgf)al hoc Cong nglii^p Qu^ng Ninli

PGS.TS Oinh Van Cliien, TrUdng Sai hoc IVId-Dia chat

Email: ct>lenkhaDthiaiqni)gmail com

I.OATVAND^

Theo chien liTdc phat trien cua

iganh Than den nam 2015, tam nhin

Ien nam 2020; s^n lu'dng than khai

hac ham 16 khoang 50 trieu tan/nam,

:hiem ti le ngay c^ng I6n. Di dat muc

leu do, nganh Than phai day manh

'iec 6ho c^c dudng 16 cd ban phuc vu

ho cong tac khai thac. Hien nay, thi

ong cac du6ng 16 ca ban trong nganh

han chu yeu dung cong nghe khoan

10 min. Be tang nang suit, tang tuoi

hp cua chi tiet v^ may Ichoan can thiet

ihai nghien cijftJ thiet ke cac chi ti^t va

Ngaynhanbai: 01/08/2013

Ng^ chap nhan dang: 05/10/2013

may, tinh toan mot so thdng so cua cac

chi tiet va nghiem ben mpt so cum chi

tiet tren may khoan diJng de khoan tao

16 no min khi thi cong cac dUdng 16 CO

bcin dung trong khai thac than ham 16

vung Quang Ninh.

Bang 1. Lo khoan tren guong ciia dudng 16 eo ban

2. N6I DUNG NGHIDN cau

2.1. Dac diem cua Id khoan tren

gi/dng dao

L6 khoan tren gUdng dao cCia

da6ng 16 cd ban la doi tUdng lam viec

cua thiet bi khoan, do vay viec kh^o sat

va phan tich dac diem cCia 16 khoan rat

can thiet. Qua khcio sat tac gici thay cac

16 khoan tren gUdng dao cua diJ6ng 16

Cd bin dCing trong khai thac than ham

16 thu'dng co du6ng kinh (j) < 52mm,

chieu sau 16 khoan L < 1,2-3m.

Cac 16 khoan gom mot so loai: 16

khoan co du6ng tam vuong goc vdi

mat gadng (song song vdi true dadng

16); 16 khoan co dudng tam nghieng

so vdi be mat gu'ong va true dadng 16,

goc nghieng dUdng tam cua cac 16 vien

gUdng so vdi true dudng 16 la a = 5" -J￾10°, gdc nghieng cCia dudng tam cac

16 dot khau so vdi true dudng 16 la a =

12"^ 15° (bang l).Hg chieu khoan tren

mat gUdng dao cua du'dng thdng 2,8 x

1,8m trong dudng 16 cd ban.

Cae thong so

Chieu rong (m)

Chieu cao (m)

Khu vuc dutfng thong

Cd

ehdng tam

2,1

2,7

Khong

chong tam

1,8

2,6

Sau

hoan thien

1,2

2,0

Buong md rong

Co

chong tam

4,5

3,5

Khong

chong tam

4,2

3,2

Sau

hoan thien

3,5

2,7

(Cac kich thUdc ghi trong bang la toi thieu khi chieu day Idp be tong d dUcing thong la 300mm va khu vi/c

buong m& rpng lay trung binh la 350mm)

So 18.201 3 . TapdiiKHOA HOC&CONG NGH| 141