Rigid-flexible coupled multi-dimensional vibration isolation platform

Abstract

The invention relates to a rigid-flexible coupled multi-dimensional vibration isolation platform. The platform is mainly composed of a lower platform, lower platform guide connecting blocks, lower flexible hinges, hollow cylindrical guide rods, solid cylindrical guide rods, upper flexible hinges, upper platform guide connecting blocks and an upper platform. In order to solve the problems that a traditional multi-dimensional vibration isolation platform is large in occupied space, small in vibration isolation amplitude, high in frequency, complex in structure and the like, the multi-dimensional vibration isolation platform takes the flexible hinges as torsion spring units of the vibration isolation platform, length changes of branch chains within a wide range are achieved through small-angle torsion of the flexible hinges, and the vibration isolation requirement of large-amplitude vibration is met. Rigidity-free joint hinges are adopted, the overall rigidity of the multi-dimensional vibration isolation platform is reduced, vibration isolation within the low-frequency range is achieved, and the vibration isolation frequency domain of the multi-dimensional vibration isolation platform is widened. The multi-dimensional vibration isolation platform adopts the same branch chain form, the structure is simple, symmetry is high, motion coupling between the branch chains is avoided, part interchangeability is high, maintaining is convenient, the size is small, the weight is low, and mounting is convenient.

Description

Technical field [0001] The present invention relates to the field of mechanical kinetics and vibrations, and more particularly to a pluggable multidibular blocking platform. Background technique [0002] Common multidibular vibration platforms mainly include a flat uniform arrangement with a six-dimensional membrane, and perform multi-dimensional vibration function in two ways using a single-dimensional blockage. China Patent CN111425704A is uniformly arranged under the working desk to achieve the vibration isolation effect, the structure is simple, the stability is good, but the vibration effect of the vibration vibration in a particular direction is poor, and there is a certain use limit. In addition, the number of vibration isolators required for plane uniform arrangement by the six-dimensional membrane is large, the space occupied is large, the sports space is relatively limited, and the equipment is difficult to achieve the vibration isolation effect for some installation sp...

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Problems solved by technology

Chinese patent CN111425704A evenly arranges six-dimensional air springs under the operating table to achieve vibration isolation effect. The structure is simple and the stability is good, but the vibration isolation effect for specific directions is poor, and there are certain restrictions on use.

However, due to the complex structure and heavy weight of the conventional single-dimensional vibration isolator, its application environment is limited.

Chinese patents CN111895039A and CN106763398A adopt a hybrid vibration isolation method, fixing passive dampers and active actuators on branch chains to achieve active and passive vibration isolation effects at the same time, but the frequency domain of vibration isolation is limited

[0003] Chinese patent CN111677810A uses a flexible hinge and an eddy current damper to design an optical load vibration isolation platform to effectively realize the vibration isolation effect of a small vibration, but because only the flexible hinge is used to realize the upper platform movement, the vibration isolation amplitude is small

Chinese patent CN106402233A uses flexible hinges plus active and passive vibration isolators to achieve vibration isolation effects, but the design of the flexible hinges and the size of the active and passive vibration isolators on the branch chains limit the movement space of the multi-dimensional vibration isolation platform, making it difficult for the platform to Vibration isolation for large-amplitude vibration excitation

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