MD2966B1

MD2966B1 - Friction machine

Info

Publication number: MD2966B1
Application number: MDA20040163A
Authority: MD
Inventors: Vasile Agafii; Vladimir Parsutin
Original assignee: Institutul De Fizica Aplicata Al Academiei De Stiinte A Republicii Moldova
Priority date: 2004-06-29
Filing date: 2004-06-29
Publication date: 2006-01-31
Also published as: MD2966C2

Abstract

Inventia se refera la tehnica experimentala, in particular la instalatiile pentru incercarea materialelor de constructie la miscarea alternativa cu si fara lubrifiant. Instalatia de incercare a materialelor la frecare contine, amplasate pe baza (1), un dispozitiv de fixare a probei (8), ce include un fixator al ei, un mecanism de miscare du-te-vino (6), legat cu el; un mecanism de incarcare, care include o coloana (3), ce este amplasata liber in orificiul bucsei directoare (23), o greutate (5), fixata in partea de sus a coloanei (3) si un fixator al contraprobei (10), fixat in partea de jos a ei, precum si un masurator al fortelor de frecare (13). Nou este aceea ca instalatia de incercare a materialelor la frecare include doua dispozitive de fixare a probelor si corespunzator doua mecanisme de incarcare. Fiecare dispozitiv de fixare a probelor contine un batiu (14), fixat rigid pe baza (1), pe care prin intermediul unei imbinari de tip "coada randunicii" sunt montate sanii (15) cu chiuvete (16) instalate pe ele, in care este fixata proba (8). Saniile (15) ambelor dispozitive de fixare, independent una de alta, sunt unite cu mecanismul de miscare du-te-vino (6) cu posibilitatea de reglare a lungimii curselor duble. Pe fiecare fixator al contraprobei (10) sunt fixate traductoare tensometrice (11), unite cu masuratorul fortelor de frecare (13). Pe fiecare contraproba (9) in regiunea de contact al ei cu proba (8) este fixat un termocuplu (20) unit cu un masurator de temperatura (21). Fiecare chiuveta (16) este dotata suplimentar cu un element de incalzire (17), unit cu un dispozitiv de schimbare a temperaturii (18). Mecanismul de incarcare este dotat suplimentar cu o tija directoare (22), fixata in bucsa directoare (23) si amplasata paralel coloanei (3), totodata capatul liber al ei este amplasat in orificiul consolei, fixate pe coloana.The invention relates to the experimental technique, in particular to the installations for testing the construction materials at the alternative movement with and without lubricant. The friction testing plant contains, on the base (1), a sample fastening device (8), which includes a fastener, a go-and-move mechanism (6), connected to it; a loading mechanism, which includes a column (3), which is freely placed in the opening of the guide bush (23), a weight (5), fixed at the top of the column (3) and a counter-test fixture (10), fixed at the bottom of it, as well as a measurement of frictional forces (13). It is new that the friction testing equipment includes two sample fasteners and two loading mechanisms. Each sample fixture contains a bat (14), rigidly fixed to the base (1), which, by means of a "tail of the joint" type, are fitted to the breasts (15) with sinks (16) installed on them, in which the test (8) is fixed. The sleds (15) of both fixing devices, independently of each other, are joined with the go-come (6) movement mechanism with the possibility of adjusting the length of the double runs. On each fixation of the counter-test (10) are fixed tensometric transducers (11), joined with the measurement of the frictional forces (13). On each counter-test (9) in its contact region with the sample (8) is fixed a thermocouple (20) together with a temperature meter (21). Each sink (16) is additionally equipped with a heating element (17), coupled with a temperature change device (18). The loading mechanism is additionally equipped with a guide rod (22), fixed in the guide bush (23) and placed parallel to the column (3), at the same time its free end is located in the hole of the console, fixed on the column.