Isostatic suspension cylinder

Abstract

The invention relates to an isopressing suspended cylinder which comprises a cylinder body (5), a plunger (2) and a sealing cover (3) and is characterized in that the plunger (2) is placed in the cylinder body (5), and the plunger (2) and one end of the cylinder body (5) form a space; the inner wall of the cylinder body (5) is provided with a plurality of oil chambers, and the space is communicated with the oil chambers; and the plunger (2) performs fore and aft motion along the axis of the cylinder body (5) under the action of pressure oil. The suspended cylinder can be used for fully eliminating defects of the friction between the piston and the inner wall of the cylinder body as well as the generated abrasion and energy consumption in the prior art, simultaneously, the piston can is absolutely aligned, thereby fully eliminating piston rod shake or swing of a piston rod in the prior art; and the acting force is rigorously kept on the axis, so the suspended cylinder has the characteristics of long service life and no abrasion.

Description

technical field [0001] The invention relates to a hydraulic working cylinder, in particular to an isostatic suspension cylinder adopting static pressure lubrication, which belongs to the field of hydraulic technology and precision measurement. Background technique [0002] In the hydraulic cylinder in the existing hydraulic technology, the V-shaped or X-shaped rubber sealing ring is generally used for sealing between the inner wall of the cylinder and the outer cylindrical surface of the piston, and the O-shaped sealing ring is used between the cylinder head hole wall and the outer surface of the piston rod. Sealing, this kind of hydraulic cylinder is mainly dependent on the elasticity of the material, and the non-pressure sealing is implemented by the method of reserving the amount of material. The degree of sealing is affected by the following conditions. It is the elasticity of the material that is eroded by the flowing medium and aging over time. The third is the toleran...

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Problems solved by technology

[0002] In the hydraulic cylinder in the existing hydraulic technology, the V-shaped or X-shaped rubber sealing ring is generally used for sealing between the inner wall of the cylinder and the outer cylindrical surface of the piston, and the O-shaped sealing ring is used between the cylinder head hole wall and the outer surface of the piston rod. Sealing, this kind of hydraulic cylinder is mainly dependent on the elasticity of the material, and the non-pressure sealing is implemented by the method of reserving the amount of material. The degree of sealing is affected by the following conditions. It is the elasticity of the material that is eroded by the flowing medium and aging over time. The third is the tolerance and shape tolerance deformation of the inner wall of the cylinder, etc., and the leakage of the flowing medium has not been well resolved.

[0003] At the same time, the reciprocating motion of the piston in the prior art is guided by the liner material on the piston surface and the bushing in the cylinder head hole wall, so that friction, energy consumption, wear, piston rod shaking or rocking will inevitably occur. shortcoming

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