Variable load hydraulic control device

A variable load hydraulic control device which comprises a piston, activated by means of a rod, which slides through a tubular casing, differentiating a traction chamber from a compression chamber wherein, fixed to the piston, an upper tubular head is housed which comprises a longitudinal channel open at least at one end, and an inner tube fixed to an annular support which comprises a series of through holes, wherein the upper tubular head is configured to slide through a tubular casing and an outside of the inner tube, forming an internal chamber and an external chamber, inner and outer to the inner tube and the upper tubular head respectively, wherein both the internal chamber and the external chamber communicate through the channel and the through holes of the annular support, wherein the device comprises:

• an inner casing, coaxial and enabling a space with the inner tube, to which it is fixed,
• a floating piston, fitted in the space between the inner tube and the inner casing, between which it is able to slide, and coaxial to them,
• a retaining ring located in the inner casing,
• an upper spring, coaxial with the inner tube and located between a projection of the floating piston and an extension of a washer located inside the upper tubular head,
• a lower spring, coaxial to the inner tube and located in a control chamber that is generated between the projection of the floating piston and a base located in the inner casing,
• a control surface configured by means of a recess of the outer surface of the inner tube, which comprises a variable leak opening for communication of the external chamber and the internal chamber,
• wherein the position of the floating piston is determined by a static load of a hydraulic control device and determines a passage cross section of the variable leak opening.