| 摘要 |
<p>The device relates to the field of the seismic exploration of mineral deposits and comprises a rod and piston assembly having a plate attached to the bottom end thereof, wherein the body of the rod and piston assembly is provided with an axial through channel and the piston of the rod and piston assembly is situated inside the barrel of a hydraulic cylinder which is provided with an upper cap and is separated by a partition from a lower pneumatic chamber in which the plate is situated, said plate being mounted so that the lower end thereof is able to interact in such a way as to form a pneumatic gripping device with the upper end of a cylindrical stepped waveguide, the upper step of which, having a larger diameter, is situated inside the pneumatic chamber, while the lower step, having a working plate on the lower end thereof, forms a damping cavity together with the lower cap of the pneumatic chamber, wherein in the body of the rod and piston assembly, in the part adjacent to the plate, there is a local enlargement of the axial through channel, which forms a cylindrical cavity that is connected by radial channels to the pneumatic chamber, a rod is disposed in the axial channel and has a sealing element attached to the end thereof, which is capable of interacting with a seat at the lower end of the cylindrical cavity, and the upper end of the rod is situated in a valve housing, rigidly attached to the top end of the rod and piston assembly and comprised of a disk-shaped base and cap, and is equipped with a disk that is spring-loaded relative to the disk-shaped base and has a membrane which is clamped about its perimeter between the disk-shaped base and the cap. An increase in the efficiency of the device is achieved by reducing and stabilizing the delay between the emission of a command signal and the dynamic loading of a subsurface half-space, and also by reducing the length of the operating cycle of the device.</p> |
