PENETROMETER ACTUATING DEVICE

The invention relates to an actuating device for a penetrometer intended for agricultural works, to statically determine the soil resistance to penetration. According to the invention, the device consists of a metal frame (1) having at its top part two platelets (a) by means of which two side plates (3) are mounted with some screws (2), each of said plates (3) being provided with a detachable knuckle joint (b) at the lower part, four sitting plates (h), each of them being provided with a metal spur (i), an articulation (j) and two holes (k) wherethrough a locking bolt (5) passes, and, at the rear part, a bar (d), two eyes (e) with one bolt (f) and with two bolts (g), respectively, a double-acting hydraulic cylinder (4) having welded onto its body a piece (c) with two spindles, on the actuating rod there being mounted a spherical piece (8) and a plate (6) which are mounted, by means of some screws (7), at the upper and lower central part, two spherical half-bearings (l) and two supports (m) which, by means of some nuts (9) and some Grower washers (10) support an electronic penetrometer (11) with digital display, provided with a guard (12) and, on the sides, with two slides (n') with linear ball bearings for mounting a guiding system (13) consisting of two cylindrical bars (o) which are rigidly fixed at their ends by some supports (p) and, by some screws (14), onto the metal framework (1). Invenţia se referă la un dispozitiv de acţionare a unui penetrometru, destinat lucrărilor din agricultură, pentru determinarea statică a rezistenţei la penetrare a solurilor. Dispozitivul conform invenţiei este alcătuit dintr-un cadru (1) metalic, care are, la partea superioară, două plăcuţe (a), prin intermediul cărora se montează, cu nişte şuruburi (2), două plăci (3) laterale, prevăzute, fiecare, cu o articulaţie (b) sferică, demontabilă, la partea inferioară, patru plăci (h) de aşezare, prevăzute, fiecare, cu un pinten (i) metalic, o articulaţie (j) şi cu două găuri (k) prin care intră un bolţ (5) de blocare, iar la partea din spate, o bară (d), două urechi (e) cu un bolţ (f) şi, respectiv, cu două bolţuri (g), un cilindru (4) hidraulic, cu dublă acţiune, care are sudat pe corp o piesă (c) cu două fusuri, iar pe tija de acţionare, fiind montată o piesă (8) sferică şi o placă (6), care sunt montate, prin intermediul unor şuruburi (7), la partea centrală de sus şi la partea centrală de jos, două semilagăre (l) sferice şi, respectiv, două suporturi (m) care, cu ajutorul u