HYDRAULIC RAM Russian patent published in 2012 - IPC F04F7/02 

FIELD: machine building.

SUBSTANCE: hydraulic ram comprises a body 2, a water-air cap 6, an impact and an injection check valves 3 and 7. The water-air cap 6 is separated with an elastic membrane 8 of high travel into water and air parts 9 and 24. In the air part 24 air is pumped via a valve 25 with a slide valve. The impact valve 3 is arranged in the form of a sphere of a dense, solid and wear resistant rubber and is placed onto a stem 10. The stem 10 moves in a guide 11 and comprises a roller 12 at the end, acting at the lower end of a double-arm lever swinging on an axis 14, and the upper end is connected with an adjustable spring 16 of extension, or the roller 12 rests against a L-shaped double-arm lever, at the end of which there is a counterweight installed as capable to vary force torque.

EFFECT: invention provides for control of operation, increased reliability, higher efficiency of a hydraulic ram.

3 cl, 4 dwg