Hydraulic cylinder with an o-ring seal of variable geometry

Abstract

A new system of hydraulic and piston cylinders for the lifting of large loads manufactured based on commercial tubes, in which the cylinder tube (1), closed on its lower part possesses a welded and rigid washer (2) on its lower part and inside the aforementioned cylinder. The piston has another rigid washer welded to it (4) at a certain distance from the lower end and on its outer surface. Between the two there is an O-Ring seal (6) of variable geometry that is constructed with an elastomeric, compressable and deformable material of low friction and high elasticity and a free washer. The compression of the O-Ring seal makes up a system that closes, guaranteeing its watertightness.

Description

OBJECTIVE OF THE INVENTION[0001]The objective of the invention consists of a new hydraulic cylinder system equipped with a piston for the lifting of loads constructed with an O-Ring seal of variable geometry and with low-cost commercial tubing and which allows for the lifting or pushing of any load.BACKGROUND OF THE INVENTION[0002]Is it known that with a hydraulic cylinder, large loads can be lifted by simply introducing pressure through a hydraulic fluid through the base of the piston, which makes it move upwards or horizontally, making it possible to carry out pushing or pulling actions. However, as extraordinarily useful as these hydraulic cylinders are, they require steel tubing that is calibrated with surfaces protected as much on the inner surface as on the outer surface to avoid friction. In normal industrial applications, hydraulic cylinders are always reusable many times over, something for which industry can pay for a system that requires precision tubing calibrated and re...

AI Technical Summary

Benefits of technology

[0001]The objective of the invention consists of a new hydraulic cylinder system equipped with a piston for the lifting of loads constructed with an O-Ring seal of variable geometry and with low-cost commercial tubing and which allows for the lifting or pushing of any load.

Problems solved by technology

However, in appliances of very large dimensions, and of one sole use or of several uses, and in those in which the the cylinders are part of the permanent structure of the installations, like oceanic platforms [rigs] or installations in the sea, for them to be kept afloat, for pile driving, etc, the use of calibrated and straightened tubes would bring with it a very high cost which would render the system unviable.

What makes the process more complex is that the coating tolerances are not continuous, in other words, at the end of a tube, there can be one radial tolerance and in the centre there can be another radial tolerance, or that the ovality can be different at the end than in the centre, hence, it is necessary to develop an O-Ring seal that would permit the use of low cost commercial tubes, thus solving the aforementioned problems of viability.

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