SU971739A1

SU971739A1 - Electromagnetic vibration exciter

Info

Publication number: SU971739A1
Application number: SU803002001A
Authority: SU
Inventors: Виктор Сухаевич Звиадаури; Михаил Владимирович Хвингия; Валерий Самсонович Сванидзе
Original assignee: Институт Механики Машин Ан Гсср
Priority date: 1980-11-10
Filing date: 1980-11-10
Publication date: 1982-11-07

Description

ViGoopsTeHiis откоситс к подъемнотранспортному машиностроению, а именно к электромагнитным вибровозбудител м вибрационных устройств, и может быть мспольэовано в горной про /1Ы111ЛОЕ1НОСТК ,ViGoopsTeHiis sticks to the lifting and transport machinery, namely, to electromagnetic vibration exciters of vibration devices, and can be used in the mining industry.

Известен электромагнитный вибратор дл возбуждени направленных колебаний ,. содержащий основание с корем электромагнита и плиты с сердечником и катушкой, соединенные между собой упругой системой из винтовых цилиндрических пружин, креп щихс на винтовых пробках 1.An electromagnetic vibrator is known for driving directed oscillations,. containing a base with an electromagnet core and a plate with a core and a coil, interconnected by an elastic system of helical cylindrical springs mounted on screw plugs 1.

Наиболее близким техническим решением к изобретению вл етс - электромагнитный зибровозбудитель, нключающнй корь с электромагнитом и корпус статора с рмом, соединенные цилиндрическими прух инами 2.The closest technical solution to the invention is an electromagnetic zibrovozbuditel, inclusive measles with an electromagnet, and a stator housing with a pole, connected by cylindrical tubes 2.

Данным конструкци м присуща недостаточно высока производительность изза ограниченного диапазона изменени режимов работы,These designs are not characterized by high enough performance due to the limited range of change of operating modes,

Цель изобретени - повышение производительности вибровозбудител ,The purpose of the invention is to improve the performance of the vibration exciter

Указанна цель достигаетс тем, что электромагнитный вибровозбудитель ,содержавши корь с электромагнитом и корпус статора с рмом, соединенные цилиндрическими пружинами, снабжен кронштейнами с пазами, выполненныг/и по дуге окружности, при этом цилиндрические пружины имеют поперечную частоту, равную половине частоты их продольных колебаний, и установлены на кронштейнах с вoз жэжностью поворота относительно направлени силы т ги электромагнита.This goal is achieved by the fact that an electromagnetic vibration exciter containing measles with an electromagnet and a stator housing with a cable, connected by cylindrical springs, is provided with grooved brackets made in a circular arc, and the cylindrical springs have a transverse frequency equal to half the frequency of their longitudinal vibrations and mounted on the brackets with the direction of rotation relative to the direction of the force of the electromagnetic cable.

10ten

Причем центр окрухсности пазов расположен на оси, соедин ющей середины пружин.Moreover, the center of grooves circumference is located on the axis connecting the middle of the springs.

На фиг. 1 схематично изображен электромагнитный ибровозбудитель; FIG. 1 schematically depicts an electromagnetic exciter;

15 на фиг. 2 - схема sneKTpCKviarHHTHoro вибровозбудител с креплением упругих элементов на общих плитах; на фиг.З вид А на фиг. 2.15 in FIG. 2 is a diagram of the sneKTpCKviarHHORoro vibration exciter with attachment of elastic elements on common plates; in FIG. 3, view A in FIG. 2

Вибровозбудитель содержит плиту, The vibration exciter contains a stove,

20 вл ющуюс корем 1 с электромагнитом 2 и катушкой 3, и корпус статора 4 с закрепленным на нем рмом 5 электромагнита . Статор 4 и корь 1 соединены между собой системой упругих элемен25 тов в виде пружин 6 и регулируЭ1ых винтовых пробок 7.20 which is the core 1 with the electromagnet 2 and the coil 3, and the stator housing 4 with the electromagnet 5 fixed on it. The stator 4 and the bark 1 are interconnected by a system of elastic elements in the form of springs 6 and adjustable screw plugs 7.

Claims

In the vertical shelf of the crankshafts 8, grooves 9 are made around a circle, 30 the center of which is located between the crowns of the tires. In these grooves 9, fasteners 10 are located. Screw plugs are installed in pairs on common plates 11 to which an electromagnet and measles are fixed by means of brackets with pusgs (Fig. B of the design of an electromagnetic vibro-echo exciter (Fig. 2; elastic system made of slotted cylinders 12 / center O circumferential 1PH) of the grooves 9 is located on ocH.7tt m of the connecting middle of the springs. The electromagnetic vibration exciter operates as follows. When an alternating current is supplied, the supply winding of the electromagnet 3, the measles 1 and the stator 4 resonant oscillations are excited even at the natural frequency of the system equal to the frequency of the supply current. To excite the biharmonic oscillations in the elastic system of the exciter cylindrical springs, the ratio of the transverse natural frequencies (uif, of) equal to - 1, that in case of NPP 2. leads to excitation in the system of the main longitudinal and transverse subharmonic vibrations. The enhancement of the excitation of biharmonic vibrations in the system is accomplished by changing the angle between the direction of Twi forces of the electromagnet 2 and the longitudinal axis of the spring 6 or 12. For this type of fastening elements 10, rotate the brackets 8 to the same angles relative to the plate 1 of the core and the stator 4, and then fix this position. The invention makes it possible to increase the productivity of many technological processes by obtaining a bi-argyun oscillatory mode and eliminating the need to install an additional drive for the same effect. Claim 1. Electromagnetic vibration exciter comprising 51 cores with electromagnet and stator housing with rmsm, connected by coil springs, different t & l that, to increase productivity, it is equipped with brackets with grooves r made along an arc of a circle, and cylindrical springs have the pope; Such a frequency, equal to half of their longitudinal vibrations, is mounted on brackets with the possibility of rotation relative to the direction of force of the electromagnetic cable g. 2. The vibration exciter according to claim 1, wherein the circumference of the grooves is located on the axis connecting the middle of the springs. Sources of information taken into account in the examination 1. The author's certificate of the USSR. 167728, class B 06 B 1/04, 1963.

2. Authors svdedelstvo USSR 622722, cl. B 65 G 27/18, 1972 (prototype).

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