A Vibration Isolation Device with High Attitude Accuracy

Abstract

The invention relates to a vibration isolation device with high attitude precision, comprising a vibration isolation support frame, a cylindrical helical compression spring, a damper and a negative stiffness mechanism; the vibration isolation support frame is composed of a top plate, a middle plate and a bottom plate; four groups of cylindrical helical compression springs are respectively Connected vertically between the bottom plate and the middle plate near the four corners; the four dampers are respectively vertically connected to the four corners between the bottom plate and the top, and pass through the avoidance holes on the middle plate; The negative stiffness mechanism is connected between the bottom plate and the middle plate; the negative stiffness mechanism includes a central fixed support and four groups of elastic connection components; The front, rear, left and right positions of the upper end of the central fixed support are hingedly connected, and the outer ends of the four groups of elastic connection components are hingedly connected to the front, rear, left and right positions on the middle plate respectively. The invention satisfies the actual demand of inertial equipment taking into account the vertical low-frequency vibration isolation performance and high-precision attitude requirements.

Description

Technical field [0001] The present invention belongs to the field of inertial equipment, and the damping technique involved in the inertial apparatus, specifically, a vibration isolating device having a high precision attitude while achieving a superior vertical low-frequency vibration isolation characteristic. Background technique [0002] The method of routinely damping the inertial device is a mechanism that combines a cylindrical spiral compression spring, a leaf spring and a damper, and the cylindrical compression spring acts as a main elastic element to a vibration, and the leaf spring structure functions. The damper functions to suppress a buffer capability of the resonance, attenuating the vibration response. The leaf spring attitude is maintained and the assembly is difficult to achieve, and in order to meet the high-precision posture remained, the leaf spring structure must have enough angular strength, resulting in the vertical integrated rigidity that cannot be effect...

AI Technical Summary

Problems solved by technology

The processing and assembly of the leaf spring attitude maintaining structure is difficult, and in order to meet the high-precision attitude maintaining requirements, the leaf spring structure must have sufficient angular stiffness, resulting in the inability to effectively reduce the vertical comprehensive stiffness and meet the needs of low-frequency vibration isolation

Images