Ratchet wheel unfolding type flywheel capable of rotating bidirectionally for ball screw inerter

Abstract

The invention discloses a ratchet wheel unfolding type flywheel capable of rotating bidirectionally for a ball screw inerter. The flywheel comprises a forward flywheel assembly and a reverse flywheel assembly; the forward flywheel assembly comprises a forward poking wheel, a forward flywheel disc and forward unfolding mechanisms, the forward poking wheel is fixedly sleeved on a screw nut assembly, the forward flywheel disc and the forward poking wheel form a ratchet wheel structure, and the forward unfolding mechanisms are arranged on the forward flywheel disc so as to change the rotating radius of the forward flywheel disc; and the reverse flywheel assembly comprises a reverse poking wheel, a reverse flywheel disc and reverse unfolding mechanisms, the reverse flywheel and the reverse poking wheel form a ratchet wheel structure, and the reverse unfolding mechanisms are arranged on the reverse flywheel disc so as to change the rotating radius of the reverse flywheel disc. Under the condition that the rotation direction of the flywheel is not changed, the impact caused by the change of the rotation direction of the flywheel when the ball screw inerter switches the movement direction is reduced; and meanwhile, on the premise that no extra device is added and no extra energy is utilized, continuous variability of the rotational inertia of the flywheel is achieved, and the flywheel can automatically adapt to different working conditions.

Description

technical field [0001] The invention relates to the technical field of vibration reduction of flywheel type inerters, in particular to a bidirectionally rotatable ratchet deployable flywheel for ball screw inerters, especially a vibration damping system that can be used for ball screw inerters Continuously variable moment of inertia and bi-directional rotatable ratchet spread flywheel. Background technique [0002] In 2001, Smith of Cambridge University invented the "inerter". This new mechanical element can provide a very large amount of inertia with a small structural mass. An ideal inerter element is defined as a single-channel mechanical element with two relatively independent and free-moving endpoints. The forces on the two endpoints are equal in magnitude and opposite in direction, and are proportional to the relative acceleration. According to the structural principles, inerters are divided into four categories: mechanical, hydraulic, electromechanical and electroma...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the flywheel used in the general inerter container in the above-mentioned prior art that the moment of inertia is not changeable and it is difficult to bear the instantaneous large load, it overcomes the impact caused by the inertial capacity of the general ball screw when changing the direction of rotation of the flywheel on the smoothness of the inertial capacity of the ball screw Problem, the present invention provides a bidirectionally rotatable ratchet expansion flywheel for ball screw inertial capacity, which ensures that the inertia coefficient remains unchanged when the ball screw inertial motion direction is switched; and each flywheel does not need to change the direction of rotation, thereby Reduce the impact of ball screw inertial capacity due to the change of flywheel rotation, and at the same time, without adding additional devices and using additional energy, the flywheel moment of inertia can be continuously variable and adaptive to different working conditions

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