SU928538A1

SU928538A1 - Electric machine

Info

Publication number: SU928538A1
Application number: SU782631420A
Authority: SU
Inventors: Василий Дмитриевич Мигаль
Original assignee: Предприятие П/Я Г-4485
Priority date: 1978-06-14
Filing date: 1978-06-14
Publication date: 1982-05-15

Description

(5) ЭЛЕКТРИЧЕСКАЯ МАШИНА(5) ELECTRIC MACHINE

II

Изобретение относитс к конструкции электрических машин и может быть использовано в электротехнической промышленности. ,jThe invention relates to the design of electrical machines and can be used in the electrical industry. j

Известна конструкци электрической машины, содержаща корпус с закрепленными на нем подшипниковыми щитами , ротор, установленный на подшипниках качени в капсюл х, смонтированных в подшипниковых щитах, упругий компенсатор осевого перемещени ротора, при этом внутренние кольца подшипников жестко закреплены на роторе ГПОднако данна конструкци элек- , трической машины характеризуетс повышенным уровнем вибрации и вследствие этого недостаточной надежностью . Это объ сн етс тем, что в известной конструкции электрической машины упругий компенсатор осевого перемещени ротора установлен между крышкой и плавающим в капсюле иаруж ным кольцом подшипника качени ,чтоThe known design of an electric machine, comprising a housing with bearing shields attached thereto, a rotor mounted on rolling bearings in capsules mounted in bearing shields, an elastic compensator for the axial movement of the rotor, while the inner rings of the bearings are rigidly fixed on the rotor. The tricking machine is characterized by an increased level of vibration and consequently a lack of reliability. This is due to the fact that, in the known construction of the electric machine, the elastic compensator for the axial movement of the rotor is installed between the cover and the rolling bearing floating ring in the cap, which

не обеспечивает необходимую радиальную и осевую жесткость подшипниковых i узлов и приводит к возникновению резонансных вибраций деталей подшипников .does not provide the necessary radial and axial rigidity of the bearing i assemblies and leads to the occurrence of resonant vibrations of the bearing components.

Целью изобретени вл етс уменьшение вибраций и повышение надежности .The aim of the invention is to reduce vibrations and increase reliability.

Поставленна цель достигаетс тем, что электрическа машина содер :ит дополнительный упругий компенсатор, .при этом каждый, компенсатор установлен между капсюлем и наружным торцом обоих подшипниковых щитов, а наружные кольца подшипников жестко закреплены в капсюл х.The goal is achieved by the fact that the electric machine contains: it is an additional elastic compensator, while each compensator is installed between the capsule and the outer end of both bearing shields, and the outer rings of the bearings are rigidly fixed in the capsule.

На чертеже изображена электрическа машина, разрез.The drawing shows an electric machine, a slit.

Claims

The electric machine contains rolling bearings 1 and 2 on which shaft 3 of the rotor is mounted, rolling bearings mounted in the primer and 5 using covers 6 and 7, one of which has a maze 392 on the adjustable nut 8, balancing rings 9 and 10, elastic element 11, washers 12, stops 13, nuts T and 15, lock washers 16 and 17, keys 18 and 19, set screw. 20, flange or nut 21, the elastic element 22, screws 23 and 2, while the caps are installed floating in the bearing shields 25 and 2b of the housing of the electric machine. An additional elastic compensator includes an elastic element 11 and 22, installed between the caps t and 5 and the outer ends of the bearing shields 25 and 2b, respectively. Electric machine works as follows. The optimum tension of rolling bearings and the size of floating caps in the bearing shields is determined by the spectrum of vibration and noise of the electric machine when it is tested. At that, the size of the floating caps in the bearing shields can be set from mm fractions to rigid fixation 5 cap flange 21 by tightening the bolts 24. Tough fixation of rolling bearings on the rotor shaft and cap x eliminates the bias and vibration of the outer rings of the bearings in the capsule and prevents them from damaging REPRESENTATIONS from fretting, during rotation of the rotor. The invention makes it possible to reduce vibration and increase the reliability of an electric machine. . An electric machine, comprising a housing with bearing shields attached to it, a rotor mounted on rolling bearings and caps mounted in bearing shields, an elastic compensator for the axial movement of the rotor, while the inner rings of the bearings are rigidly fixed on the rotor, characterized in that , in order to reduce vibration and increase reliability, it contains an additional elastic compensator, with each compensator mounted between the capsule and the outer end of both bearing shields s, and the outer rings of the bearings are rigidly fixed in the capsule x. Sources of information taken into account in the examination 1. Catalog Electric motors asynchronous splash-proof AN, ANU, Vneshtorgizdat, 201V72, Kharkov, 1972.