High-frequency loading servo vibration hydraulic cylinder

Abstract

The invention discloses a high-frequency loading servo vibration hydraulic cylinder which comprises a cylinder barrel, a cylinder end, a piston and a piston rod, wherein the cylinder barrel is connected with the cylinder end, the piston and the piston rod are arranged in the cylinder barrel, liquid hydrostatic bearing supporting structures are adopted at the two ends of the piston rod, a hydrostatic bearing is fixed to the cylinder end and supports the piston rod, a servo valve block is arranged above the cylinder barrel and provided with two servo valves which are connected in parallel, and a displacement sensor is arranged on one side of the cylinder barrel of the hydraulic cylinder. The high-frequency loading servo vibration hydraulic cylinder has the advantages of overcoming defects of a traditional cylinder under special conditions, being little in frictional resistance, reductive in starting pressure, short in response time, good in damping prevention property and oil liquid temperature control property, stable in motion and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a high-frequency loading servo vibration hydraulic cylinder. Background technique [0002] The supporting structure of the piston rod of the traditional double-rod hydraulic cylinder generally adopts copper guide or guide belt, guide ring, and the piston adopts a sealing ring. The requirements for the high-frequency servo vibrating cylinder used in the field: (1) The maximum acceleration is 30g; (2) The use frequency is 20~350Hz; (3) It works normally under the centrifugal field of 100g; (4) Seismic wave distortion (response spectrum area): 5%; ⑸ oil supply pressure 21Mpa. [0003] For the specific requirements of the high-frequency servo vibration cylinder, the traditional double-rod hydraulic cylinder has the following disadvantages: the contact between the piston rod and the guide is solid-solid contact, the frictional resistance is large, the starting pressur...

AI Technical Summary

Problems solved by technology

[0003]Aiming at the specific requirements of the high-frequency servo vibration cylinder, the traditional double-rod hydraulic cylinder has the following disadvantages: the contact between the piston rod and the guide is solid-solid contact, and the friction Large resistance, high starting pressure of the hydraulic cylinder, long response time, poor shock resistance, uneven guiding force when working under high gravity acceleration, increased friction, and reduced stability

Working at high frequency, the temperature of the oil will rise, and the solid-solid direct contact will cause wear and reduce the service life

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