Động lực học cầu trục loại một dầm sử dụng hai pa lăng điện làm cơ cấu nâng vật

NGHIEN cufu-TRAO DOI

3S. s ^ jl￾DpNG Ll/C HOC CAU TRUC LOAI MOT DAM SCT DUNG

HAI PA LANG DIEN LAM CO CAU NANG VAT

DYNAMIC OF THE SEMGLE GIRDER CRANE

USING TWO HOISTS AS LIFTING STRUCTURE

TS. Biii Khic Gay, KS. Vii Due Thinh

Hpc vien Ky thuat Quan sy

TOM TAT

Bdi bdo trinh mo hinh ca hpc, mo hinh todn vd kit qud tinh todn dpng luc hpc cua cdu

true logi mpt ddm su dung hai pa ldng dien Idm ca cdu ndng vdt trong tru&ng hgp cd hai pa ldng

dien cung Idm viec di khai dpng ndng vdt tic nen, cdp chung.

Tu khoa: Cdu true mpt ddm; Dong lire hpc cdu true mpt ddm.

ABSTRACT

This article presents mechnical models, mathematial models and dynamical calculated

results of a single girder crane which using two electrical hoists as lifting structure, in case of

both of them working to start lifting an object from the ground, loose cable.

Keywords: Single girder cranes; Dynamic of single girder cranes.

l.DATVANDE

Cau true la loai may rat phd bien trong nen kinh te qudc dan. Cdu true dung de co gidi

hda eae edng viee bdc xep va van chuyen hang trong cae nha xudng kho bai. Cau true cd nhieu

loai khac nhau, nhung cau true loai mgt dam sir dung pa lang dien Iam ca cau nang vat (CCNV)

la loai tuong ddi phd bien, dung de nang tai vda va nhd. Phin Idn loai nay diing mpt pa lang diSn

song ddi khi de tang tai trgng nang ngudi ta sii dung hai pa lang dien lam CCNV. Ddng lyc hpc

ciia cau true ndi chung da dugc mpt sd cdng trinh nghien ciiu cdng bd [2,3,5]. Tuy nhien, vol cau

true mpt dam su dung hai pa lang dien Iam CCNV cd rit it tai lieu nghien cim dupe cdng bo. Cau

true loai nay khi lam viec se xay ra hai trudng hgp: Chi diing mpt pa lang dien, hoac dung hai pa

lang dien dong thdi de nang vat. Sy lam viec cua hai trudng hgp nay se din den dac tinh dgng lyc

hgc khac nhau. Dgng luc hpc cau true loai mgt dam sir dung bai pa lang di?n Iam CCNV khi chi

mdt pa lang dien lam viec da dugc trinh bay trong [1]. Bai bao nay se trinh bay ket qua nghien

cuu dgng luc hpc cua cau true khi ca hai pa lang dien cimg lam viec, khdi dpng nang vat tir nen,

cap chung.

ISSN 0866 - 7056

TAP CHi CO KHi VIET NAM, Sd 1+2 nam 2015

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