Ratchet wheel type ball screw inerter with variable inertial mass coefficient and capable of rotating bidirectionally

Abstract

The invention discloses a ratchet wheel type ball screw inerter with a variable inertial mass coefficient and capable of rotating bidirectionally. The ratchet wheel type ball screw inerter comprises a forward flywheel assembly and a reverse flywheel assembly. The forward flywheel assembly comprises a forward poking wheel, a forward flywheel disc and a forward unfolding mechanism, the forward poking wheel is fixedly arranged on a lead screw nut assembly in a sleeving mode, the forward flywheel disc and the forward poking wheel form a ratchet wheel structure, and the forward unfolding mechanism is arranged on the forward flywheel disc so as to change the turning radius of the forward flywheel disc. The reverse flywheel assembly comprises a reverse poking wheel, a reverse flywheel disc and a reverse unfolding mechanism, the reverse flywheel and the reverse poking wheel form a ratchet wheel structure, and the reverse unfolding mechanism is arranged on the reverse flywheel disc so as to change the turning radius of the reverse flywheel disc. Under the condition that the rotation direction of a flywheel is not changed, the impact caused by the change of the rotation direction of the flywheel when the inertia volume of a ball screw switches the movement direction is reduced. 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 is self-adaptive to different working conditions.

Description

technical field [0001] The invention relates to the technical field of vibration reduction of flywheel inerters, in particular to a ratchet type ball screw inerter with variable inertia coefficient and bidirectional rotation, especially a ratchet wheel with variable inertia coefficient and bidirectional rotation Ball screw inertial container with type 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 electromagnetic. In addition, acc...

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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 variable inertial coefficient and bidirectionally rotatable ratchet type ball screw inerter, which ensures that the inertial coefficient remains unchanged when the ball screw inertial movement direction is switched; and each flywheel does not need to change the rotation direction, 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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