SU380363A1 - ELECTRODYNAMIC DRIVER OF LONG-TERM AND TORCH VIBRATIONS - Google Patents

Description

one

The invention relates to devices for initiating mechanical oscillations, in particular, electrodynamic drivers, and one (for electrodynamic drivers of longitudinal and 1 torsional vibrations, and can be found (for example, in test stands for testing products for vibration strength and vibration resistance).

Electrodynamic drivers of longitudinal and torsional vibrations are known; they contain a mag1H1Ionut duct with an annular air gap, a magnetism coil and a moving system, which includes a cylindrical oscillator located in the air gap of the magnetismis and generates a longitudinal oscillation and an excitation coil. In the case of known exciters, the coil of excited torsional vibrations has the form of a frame and disperses in a magnetic field created by a separate m, an angnitic system.

The presence of separate magnetic systems complicates the design and enlarges the dimensions of the electrodynamic exciter, and the centering of the excitation coils is difficult, and the stability of the mobile system is impaired, which negatively affects the accuracy of reproduction of the waveform.

In the proposed driver, in order to simplify the design and increase the accuracy

reproducing a given oscillation pattern of the Katushka excitation of torsional vibrations is located in the annular air gap of the magnetic core and is made toroidal,

formed by traction elements placed on the cylindrical surface of the excitation coil of longitudinal vibrations but its forming, fixed elements placed along the forming surface

a magnetic duct, limiting the air gap on the side of the traction elements, and flexible current connectors, which sequentially connect the traction elements with Npodvizv, n. FIG. 1 shows the proposed electrodynamic pathogen, butroidal section; in fig. 2 — node I in FIG. one; in fig. 3 - section aa and fng. 2; in fig. 4 shows the electrical circuit of the excitation coils.

The magnetic circuit 1 of the electrodynamic exciter comprises a prefabricated structure comprising a housing 2, a core 3 and a cover 4. Between the core 3 and the cover 4 there is an annular air gap 5 in which a cylindrical longitudinal vibration excitation coil 6 and a toroidal torus excitation coil 7 are placed unit traction knot. A permanent magnetic note in the magnetic core / is created by means of a constant current fed bias coil 8, which is sectioned. A toroidal coil 7 is formed by tovite elements 9 placed. cylindrical surfaces. coils 6 along its forming, fixed elements 10 located along the forming surfaces // | Lids 4 facing the traction elements 9, and flexible current leads 12, 13, connecting the traction elements 9 in series with the fixed support: W. elements: Centering of the mobile system of the exciter, including a cylindrical coil 6, toroidal harvester 7 and rigidly connected 1KATUSH / il mCLir.U UU7I14 is carried out with a hydraulic table with it 14, realizing, with static bearing / 5,. which provides two degrees of freedom rows of the moving system (linear movement along the longitudinal axis s and fluctuated angular displacement relative to this axis) and excludes dry t.renie and lyu1ft. The suspension of the moving system is carried out by means of elastic elements: TOiB 16. To reduce inductive resistance; cylindrical coil 6 1kern - installed med.n.yy screen | 17. The function of the screen of the toroidal coil 7 is carried out by the fixed elements 10. | At the pitapia of the cylindrical roller: 6 and the toroidal roller 7, which are in a constant magnetic field, leremelyngm current on the dihydric coil 6 acts on the alternating sign, and on the toroidal 7 - C: On, variable torque torque. As a result of this, the mobile system oscillates of a complex shape, the lengths of which are longitudinal and torsional vibrations. We will invent the Pre-Electrodynamic Pathogen and the Electrodynamic Agent. torsional vibrations containing a magnetic conductor with an annular air gap are coils, a cylinder, and a mobile system including a cylindrical magnetic conductor magnetic pipe LL, “, v I-mP. ,,” located in the air gap. , p .r, TTD TTU Y, KPL Rsku 1 excitement rabbit, cola,. &Quot;, ", .. ,, - og, o.il -, 1-prn KPUTILNY KOBANI and. Torsional excitation coil characterized in that, in order to simplify the design and improve the accuracy of reproduction of a given shape, oscillations, the excitation coil rutile oscillations are located in the annular air gap of the magneto-conductor and are made toroidally formed by rubber and elements placed on the cylindrical surface of the exciter longitudinal oscillations along its forming, fixed elements placed along the forming .noj upperness magnetic conductor, limiting the living AIR gap from the side of the thrust elements and tib; kimi toakopodvodi, sequentially connecting m. and traction elements with fixed. 75; fff l. / / Power hydrostat padding

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