RO91381B1 - Electrical drive system for mechanical presses with flywheel - Google Patents

Electrical drive system for mechanical presses with flywheel

Info

Publication number
RO91381B1
RO91381B1 RO116731A RO11673184A RO91381B1 RO 91381 B1 RO91381 B1 RO 91381B1 RO 116731 A RO116731 A RO 116731A RO 11673184 A RO11673184 A RO 11673184A RO 91381 B1 RO91381 B1 RO 91381B1
Authority
RO
Romania
Prior art keywords
flywheel
drive system
star
relays
short
Prior art date
Application number
RO116731A
Other languages
Romanian (ro)
Other versions
RO91381A2 (en
Inventor
Lucian Doru Dascalescu
Roman Morar
Virgil Moldovan
Constantin Saramet
Vasile Rocas
Original Assignee
Combinatul De Utilaj Greu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Combinatul De Utilaj Greu filed Critical Combinatul De Utilaj Greu
Priority to RO116731A priority Critical patent/RO91381B1/en
Publication of RO91381A2 publication Critical patent/RO91381A2/en
Publication of RO91381B1 publication Critical patent/RO91381B1/en

Links

Abstract

Inventia se refera la un sistem de actionare pentru prese mecanice cu volant, destinat rationalizarii consumului de energie electrica la aceasta categorie de utilaje. Sistemul de actionare este alcatuit dintr-un motor asincron cu rotor, în scurcircuit, o schema de alimentare realizata cu contactoare statice cu tristoare, o schema de comada cu contacte si relee, precum si un dispozitiv cuprinzând doua relee centrifugale si un sistem de transmisie a miscarii arborelui motor la acestea. Sistemul permite exploatarea motorului în conexiunea stea, functionînd s a1/3 din puterea nominala, pîna la mon'mentul în care turatia scade sub valoarea limita admisibila, cînd se realizeaza comutarea în triunghi, cuplul motor sporit asigurînd cresterea turatiei la valoarea initiala, ceea ce determina reconectarea în stea si în continuare alternarea ciclica optima a perioadelor de functionare în conexiunile stea si triunchi. Sistemul poate fi aplicat la toate presele mecanice cu volant, actionate cu motoare asincrone cu rotor în scurcircuit.The invention relates to a drive system for mechanical presses with a flywheel designed to rationalize the power consumption in this category of machinery. The drive system consists of a short-circuited asynchronous rotor motor, a feed scheme made with static toroidal contactors, a circuit diagram of contacts and relays, as well as a device comprising two centrifugal relays and a transmission system engine shaft movement to them. The system allows the engine to operate in the star connection, running a1 / 3 of the nominal power, until the speed falls below the permissible limit value, when the triangle is switched, the increased torque boosting the rpm to the initial value, which causes the star-to-end reconnection and continued optimal cyclical alternation of operating times in star and triple connections. The system can be applied to all mechanical flywheel presses operated with asynchronous motors with short-circuit rotor.

RO116731A 1984-11-22 1984-11-22 Electrical drive system for mechanical presses with flywheel RO91381B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO116731A RO91381B1 (en) 1984-11-22 1984-11-22 Electrical drive system for mechanical presses with flywheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO116731A RO91381B1 (en) 1984-11-22 1984-11-22 Electrical drive system for mechanical presses with flywheel

Publications (2)

Publication Number Publication Date
RO91381A2 RO91381A2 (en) 1987-04-30
RO91381B1 true RO91381B1 (en) 1987-05-01

Family

ID=20116067

Family Applications (1)

Application Number Title Priority Date Filing Date
RO116731A RO91381B1 (en) 1984-11-22 1984-11-22 Electrical drive system for mechanical presses with flywheel

Country Status (1)

Country Link
RO (1) RO91381B1 (en)

Also Published As

Publication number Publication date
RO91381A2 (en) 1987-04-30

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