SU804000A1

SU804000A1 - Electrodynamic of longitudinal and twisting oscillations

Info

Publication number: SU804000A1
Application number: SU762373800D
Authority: SU
Inventors: Александр Николаевич Котов; Вахтанг Борисович Сабахтаришвили; Виктор Петрович Григорьев; Александр Николаевич Борисов; Валерий Владимирович Воробьев
Original assignee: Предприятие П/Я В-2725
Priority date: 1976-06-21
Filing date: 1976-06-21
Publication date: 1981-02-15
Also published as: SU803999A1

Description

Изобретение относится к вибрационной технике, а именно к конструкции электродинамических возбудителей продольных и крутильных колебаний.The invention relates to vibration technology, namely, to the design of electrodynamic pathogens of longitudinal and torsional vibrations.

Наиболее близким по своей технической сущности к изобретению является электродинамический возбудитель продольных и крутильных колебаний, содержащий подвижный короткозамкнутый элемент, магнитопровод, включающий керн и расположенные на разных уровнях две группы радиальных полюсов, образующих с керном рабочие зазоры для размещения короткозамкнутого элемента, области подмагничивания, неподвижные обмотки переменного ’тока, индуктивно связанные с короткозамкнутым элементом, и упругую подвеску короткозамкнутого элемента [1] и [2] .The closest in technical essence to the invention is an electrodynamic exciter of longitudinal and torsional vibrations, containing a movable short-circuited element, a magnetic circuit that includes a core and two groups of radial poles located at different levels, which form working gaps with a core to accommodate a short-circuited element, magnetization areas, fixed windings alternating current inductively coupled to the short-circuited element, and the elastic suspension of the short-circuited element [1] and [2].

Однако известный возбудитель не обладает? достаточной точностью воспроизведений каждой из компонент колебаний, что обусловлено значительным их взаимовлиянием. Так, при продольном перемещении короткозамкнутого элемента под полюсами изменяется распределение токов, наведеншах системой возбуждения крутильных колебаний, а при крутильном движении ко5 *0 роткозамкнутого элемента в зоне действия дополнительных полюсов подмагничивания индуцируются токи, которые, взаимодействуя с полюсами подмагничивания, вызывают продольные колебания с частотой крутильных колебаний.However, a known pathogen does not possess? sufficient accuracy of reproductions of each of the components of the oscillations, which is due to their significant interference. So, with the longitudinal movement of the short-circuited element under the poles, the distribution of currents induced by the torsional vibration excitation system changes, and with the torsional movement of the co-closed element in the action zone of the additional magnetization poles, currents are induced which, when interacting with the magnetization poles, cause longitudinal oscillations with the frequency of the torsional fluctuations.

Цель изобретения - повышение точности воспроизведения каждой из компонент колебаний.The purpose of the invention is to increase the accuracy of reproduction of each of the vibration components.

Поставленная цель достигается тем, что короткозамкнутый элемент образован двумя механически связанными между собой и электрически изолированными друг от доуга короткозамкнутыми витками, размещенными в разных рабочих зазорах магнитопровода, один из короткозамкнутых витков, служащий для возбуждения крутильных колебаний, выполнен в виде цилиндра с чередующимся от его торцов продольными выемками, продольные участки которого размещены в рабочих зазорах, полюса одной группы смещены по окружности относительно полюсов другой группы, а обмотки подмагничивания установлены на полюсах обеих групп. Кроме того, короткозамкнутые витки расположены коаксиально., а керн выполнен ступенчатым.This goal is achieved by the fact that the short-circuited element is formed by two short-circuited coils mechanically interconnected and electrically isolated from the arc, located in different working gaps of the magnetic circuit, one of the short-circuited coils, which serves to excite torsional vibrations, is made in the form of a cylinder alternating from its ends longitudinal recesses, the longitudinal sections of which are located in the working gaps, the poles of one group are displaced in a circle relative to the poles of the other group, and weave bias installed on the poles of both groups. In addition, the short-circuited turns are located coaxially., And the core is made stepwise.

токов в обмотках 4 и 5 подмагничивания, можно получить различные значения продольных и крутильных колебаний.currents in windings 4 and 5 of magnetization, you can get different values of longitudinal and torsional vibrations.

Таким образом, благодаря тому,.что при продольных колебаниях под полюсами система возбуждения крутильных колебаний распределение токов, создающих крутильный момент, не изменяется ”и также из-за того, что при продольных колебаниях под полюсами системы возбуждения крутильных колебаний всегда находятся вертикальные [участки короткозамкнутого витка этой системы, а короткозамкнутые витки системы возбуждения система крутильных колебаний и системы возбуждения продольных колебаний электрически не связаны, точность воспроизведения каждой из компонент колебаний стала выше. 'Thus, due to the fact that during longitudinal vibrations under the poles the system of excitation of torsional vibrations does not change the distribution of the currents generating the torsional moment ”and also due to the fact that in longitudinal vibrations under the poles of the excitation system of torsional vibrations there are always vertical [sections of short-circuited the loop of this system, and the short-circuited turns of the excitation system, the torsional vibration system and the longitudinal vibration excitation systems are not electrically connected, the reproduction accuracy of of the vibrational components became higher. ''

Claims

(54) ELECTRODYNAMIC DRIVER OF LONGITUDINAL AND TORQUE TILE The drawing shows the design of the exciter of longitudinal and torsional vibrations. The electrodynamic driver of longitudinal and torsional vibrations contains a magnetic core, including a step core 1 and two groups of radial poles 2 and 3, located at different levels, bias windings 4 and 5, and fixed windings of b and AC inductively connected to the short-circuited element. A short-circuited element is mounted on an elastic suspension (not shown in the drawing) and made in the form of two short-ended locks mechanically interconnected and electrically isolated from each other: coils 8 and 9. Closed coil 8, serving to excite longitudinal vibrations is covered by a group of closed ferromagnetic cores 10. The AC windings 6 mounted on them are the primary winding of a transformer, the secondary winding of which is coil 8. The short-circuited coil 9 intended to produce torsional vibrations, made in the form of a cylinder with longitudinal windings alternating from its ends, forming parallel to the cylinder axis of the station, are covered by a group of closed ferromagnetic cores 11-. They are equipped with alternating current windings 7, which are the primary winding of a transformer, the secondary winding of which is a movable short-circuited coil 9. The exciter is as follows. . The magnetic flux excited in the magnetic circuit of the torsional vibration excitation system has a radial direction in the working air gap. When the winding 7 is supplied with alternating current in a short-circuited turn 9 kV and one currents. As a result of the interaction of the magnetic flux and the current passing through the sections of the short-circuited coil 9, forces are generated on the surface of the latter, directed along the tangent portion of the short-circuited coil 9, create a variable torque, and therefore torsional oscillations in the vibrator. When a constant magnetic flux interacts with an alternating current of a linear vibration loop, a force arises, the direction of which depends on the direction of the current in the coil and is determined by the left-hand rule. By varying the magnetic fluxes of the longitudinal and torsional magnetic core by adjusting the shackles in the windings 4 and 5 of the sub-magnet and you can get different values of the longitudinal and torsional vibrations. Thus, due to the fact that the longitudinal oscillations under the poles of the torsional vibration excitation systems do not change the distribution of currents that create a torsional moment, and because of the oscillatory oscillations, there will always be vertical the areas of the short-circuited turn of this system, and the short-circuited turns of the excitation system of the torsional vibration system and the longitudinal vibration excitation system are not electrically connected, the reproduction accuracy of each and Compression of vibrations became higher. The claims 1.Elektrodingmichesky exciter longitudinal and torsional vibrations comprising short-circuited movable element magkitoprovod, vklyuchakhtsy core and disposed ia different levels of two groups of radial poles with obrazuyu1pih punch working clearances to accommodate elemeita shorted, the bias coil winding fixed AC induction associated with the short-circuited element, and the elastic suspension of the short-circuited element, characterized in that, in order to improve the reproducibility each of the oscillation components, the short-circuited element is formed by two mechanically interconnected and short-circuited coils electrically isolated from each other, placed in different working gaps of the magnetic circuit, one of the short-circuited coils, used to excite torsional vibrations, is in the form of a cylinder with alternating 1 cis from it the ends of the longitudinal grooves, the longitudinal sections of which are located in the working gaps, the poles of one group displaced circumferentially relative to the poles of the other group / a o The magnetized magnets are installed at the poles of both groups.

2. The causative agent of pop. 1, characterized in that the short-circuit coils are arranged coaxially, and the core is made stepwise. Sources of information taken into account during the examination 1. USSR author's certificate 380363, cl. G 01 M 7/00, 1970. 2, USSR Copyright Certificate 213390, cl. G 01 M 7/00, 1966 (prototype).

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