E- Global Congress
Hosted
online from Dubai, U. A. E., E - Conference.
Date: 30
th
May, 2023
Website:
https://eglobalcongress.com/index.php/egc
ISSN (E): 2836-3612
68 |
P a g e
Currently, as a result of the radical renovation of production, cranes of various
designs are used at many industrial enterprises to perform heavy work and lift
loads. Cranes are lifting equipment that moves loads vertically and horizontally
over relatively short distances. It is worth noting that bridge cranes are widely
used at machine-building and related enterprises, with the help of which heavy
loads, various parts of machines are transported longitudinally and transversely
through workshops.The design of overhead cranes will depend on the nature and
technology of the facility. But, but, crane lifting and trolley mechanisms usually
have the same design for different cranes.
Kalit so
‘
z:
Kran,
mexanizm, yuritma, elektr jihoz, mexanik, elektrodvigatel,
chastota, tezlik, elektr, ekspulatatsiya, elektr yuritma, kran balkalar, moment.
Ключевое слово:
кран,
механизм, канцелярия, электрооборудование,
механик,
электродвигатель,
частота,
скорость,
электричество,
эксплуатация, канцелярия, крановые молотки, крутящий момент.
Keywords:
crane,
mechanism, office, electrical equipment, mechanic,
electric
motor, frequency, speed, electricity, operation, office, crane hammers, torque.
Hozirgi kunda kran mexanizmlarini ekspluatatsiyasini maxsus talablariga javob
beradigan maqbul seriyali elektr mashinalari va jihozlar ishlab chiqarilmoqda va
takomillashtirilmoqda. Ishlab chiqarish mexanizmlarini ko‘pchilik elektr
yuritmalaridan farqli ravishda kranlardagi elektr yuritmalar oldindan ishlab
chiqarish qismiga ega emas. Uni ish rejimi ko‘p omillarga ega bo‘lib, uni
yuklamasi va ishorasi o‘ta keng chegarada o‘zgarib turadi.
Shu boisdan kran
elektr jihozlari quyidagi maxsus ekspluatatsiya sharoitlarini qoniq-
tirishi lozim:
-yuklamani ta’sirni qiymati va yo‘nalishlarini keng chegaralarda o‘zgarishi;
-yuklamani turli qiymatlari va yo‘nalishlarida tezlikni katta diapazonda
rostlanishi;
-ulanishlarni katta chastotadaligi;
-ish va
pauzalarni doimiy almashinuvi;
-kranlarni xarakatlanuvchi qismlarida joylashgan jihozlarga katta tashqi mexanik
ta’sirlar;
