Dinamica Unui Sistem Rotativ

7/28/2019 Dinamica Unui Sistem Rotativ

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Dinamica unui sistem rotativ

Aceast gam de echipamente permite studiu al balanei de un sistem de rotaie n jurul unui ax. Vibraiii out -of- forelor de echilibru pot fi vizualizate i msurat prin achiziie asistat de calculator a datelor.Statice i dinamice de echilibrare este posibil pentru forme complexe de rotaie. software de simulare

special scris este folosit pentru a compara teoretice i performana real.

Predarea obiectivelor

EX170, EX180 i EX185 gama de echipamente permite:

- Vizual izarea de vibraii i forele out -of-echilibru

- Statice i echilibrarea dinamic a ansamblului fr masa adugat sau ncrcate cu unul sau mai multemase

- Echilibrarea dinamic a ansamblului ncrcat cu unul sau mai multe masele i reechilibrat maselo r

utiliznd una sau mai multe, cu sau fr achiziii de date

- Studiu cantitativ al diferitelor moduri de vibraie i out -of-echilibru comportamente

- Msurarea forelor i deplasrile pe suporturi rotor

- Echilibru static i dinamic al dezechilibrate rotor cu forme complexe de rotaie

Software- ul de simulare, VIBROTOR EX176, este furnizat ca standard pentru a ilustra performanasistemului de rotaie i pentru a selecta masele necesare echilibrului.

Specificatii tehnice

Unitatea de EX170 de baz const dintr -un arbore de rotaie prin intermediul a dou blocuri de rulmenti echipate cu patru discuri simetric pe ambele maluri ale blocurilor de sprijin. Sistemul este conectatelastic la placa de baz prin intermediul a dou perechi de grinzi de oel pen tru arcuri plate. mase micide valori diferite pot fi ataate de fiecare disc pentru a echilibra sau dezechilibra sistemul de rotaie.

Micare de rotaie este dat la sistemul manual.

EX180 standul de ncercare este identic cu EX170, dar dou din grinzi de oel flexibil sprijinireaansamblu de rotire, sunt echipate cu traductoare tensometrice. Un detector de proximitate magneticadiacente montate pe arborele de rotaie permite msurarea de poziie unghiular instantanee i viteza

de rotaie. Aceti senzori permit achiziia de date pe calculator.

Aparatul permite EX185 toate experimentarea EX180 i EX170, dar permite n plus studiul a soldului deorice form de rotaie. Cele dou discuri cea mai apropiat de sprijin grinzile sunt echipate cu jante,


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permind ataarea a maselor auto -adezive. Mai mult, unul dintre discuri exterior poate fi nlocuit cu

un ax pe care orice disc sau forma poate fi ataat.

Indiferent de sistem este utilizat, este esenial ca acestea sunt fixate n siguran la un suport robust

pentru a maximiza acurateea rezultatelor testului.

ECHIPAMENTE PACHET

Oferim trei versiuni n funcie de necesitile de predare:

Echipamentul de baza pentru studiul sistemelor de rotatie - EX170:

- Bancul de prob, fr instrumente

- Set de mase i tragei -coard

- Software de simulare EX176

- Manual tehnic i de predare note

EX180 - Include EX170 set complet, dar n plus cu:

- Set de instrumente (senzor de rotaie i traductoare tensometrice)

- Achiziionarea de software de date, card de interfa, conectarea cutie i cabluri


EX185 - Include EX180 set complet, dar n plus cu:

- Dou jante i ax cu disc standard

- Trei forme complexe (disc cu segment lipsesc, disc cu guri axiale, discul din seciunea conic)


Dimensiune i greutate

EX185: 60 x 26 x 45 cm - 14 kg

Cerine eseniale

- Strain punte Ref EI616 pentru utilizarea cu EX180 i EX185 numai


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- Alimentare electrica: 220 V - 50 Hz (pentru podul tulpina)

- PC cu CD ROM i slot PCI liber - Windows 98, 2000 sau XP

- Suport solid pentru standul de ncercare

This range of equipment allows study of the balance of a system rotating around an axle. Vibration andout-of-balance forces can be visualised and measured by computer-assisted data acquisition. Static anddynamic balancing is possible for complex rotating shapes. Specially written simulation software is used

to compare the theoretical and the actual performance.

Teaching objectives

The EX170, EX180 and EX185 range of equipment allows :

- Visualisation of vibration and out-of-balance forces

- Static and dynamic balancing of the assembly without added mass or loaded with one or several

masses

- Dynamic balancing of the assembly loaded with one or several masses and rebalanced using one or

more masses, either with or without data acquisition

- Quantitative study of the various modes of vibration and out-of-balance behaviours

- Measurement of the forces and displacements on the rotor supports

- Static and dynamic balance of the rotor unbalanced with complex rotating shapes

The simulation software, VIBROTOR EX176, is supplied as standard to illustrate the performance of the

rotating system and to select the necessary balance masses.

Technical specifications

The EX170 basic unit consists of a shaft rotating through two bearing blocks and equipped with fourdiscs symmetrically on both sides of the supporting blocks. The system is connected elastically to the

base plate via two pairs of flat spring steel beams. Small masses of various values can be attached toeach disc to balance or unbalance the rotating system. Rotational movement is given to the system

manually.

The test bench EX180 is identical to the EX170, but two of the flexible steel beams supporting therotating assembly, are fitted with strain gauges. A magnetic proximity detector fitted adjacent to therotating shaft permits measurement of instantaneous angular position and speed of rotation. These

sensors allow computer-based data acquisition.


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The EX185 apparatus permits all the experimentation of the EX180 and EX170, but additionally allowsthe study of the balance of any rotating shape. The two discs closest to the support beams are equippedwith rims, allowing the attachment of self-adhesive masses. Furthermore, one of the outer discs can be

replaced by a spindle onto which any disc or shape may be attached.

Whichever system is used, it is essential that they are fixed securely to a robust support to maximise theaccuracy of the test results.

EQUIPMENT PACKAGE

We offer three versions according to your teaching needs :

EX170 - Basic equipment for the study of rotational systems:

- test bench without instrumentation

- set of masses and pull-chord

- simulation software EX176

- technical manual and teaching notes

EX180 - Includes the complete EX170 set, but additionally with:

- set of instrumentation (rotational sensor and strain gauges)

- data acquisition software, interface card, connecting box and cables


EX185 - Includes the complete EX180 set, but additionally with:

- two rims and spindle with standard disc

- three complex shapes (disc with missing segment, disc with axial holes, disc of tapered section)


Dimension and weight

EX185 : 60 x 26 x 45 cm - 14 kg

Essential requirements


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- Strain bridge Ref EI616 for use with EX180 and EX185 only

- Electrical supply : 220 V 50 Hz (for the strain bridge)

- PC with CD ROM and free PCI slot - Windows 98, 2000 or XP

- Solid support for the test bench

Dinamica Unui Sistem Rotativ

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