Planet roller screw type inerter and inertia coefficient calculating method thereof

Abstract

The invention discloses a planet roller screw type inerter and an inertia coefficient calculating method thereof. The planet roller screw type inerter comprises a shell; the shell comprises an upper shell and a lower shell; the upper shell and the lower shell are connected through a bolt to form a cavity; a planet roller screw type inerter module is arranged in the cavity, and comprises a center lead screw, a planet rolling column, shaft end baffle plates and a flywheel; the center lead screw is positioned in the center of the flywheel, and is in threaded connection with the planet rolling column through a thread; the two ends of the planet rolling column are rotationally mounted in the shaft end baffle plates; the shaft end baffle plates are fixed in the centers of the upper and lower surfaces of the flywheel through screws; the planet rolling column is in engaged connection with the flywheel through threads; and the flywheel is rotationally mounted in the cavity through a bearing. The planet rolling column and the flywheel are adopted to commonly generate an inertia effect; and through dual motions of revolving and rotation of the planet rolling column, the inertia ratio and theapplicability of the inerter are effectively improved.

Description

Technical field [0001] The invention relates to the technical field of inertial containers, in particular to a planetary roller screw type inertial container and a method for calculating the coefficient of inertia. Background technique [0002] The inertial container is a new type of two-point mechanical device with good low-frequency vibration isolation performance. It has been well applied in the fields of automobile suspension, train suspension, aircraft landing gear, high-rise buildings, etc., and has good performance in vibration reduction systems. Low-frequency vibration reduction effect. [0003] The output force of the inertial container is proportional to the relative acceleration at both ends, which can realize the dynamic characteristics of a large mass with a small mass, which greatly broadens the structure of vibration control. However, the inertial container is an element at both ends. When used as an inertial element in applications such as dynamic vibration absorbe...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a planetary roller screw type inerter and its inertia coefficient calculation method, which solves the problem that the structure parameters cannot be adjusted when the radial size of the flywheel is limited in the existing fixed structure of the inerter , unable to adapt to the changing vibration input, resulting in the technical problem that the inertia-to-mass ratio of the inerter cannot be changed

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