Hybrid excitation type vibration isolation device

Abstract

The invention relates to the technical field of vibration isolation devices, in particular to a hybrid excitation type vibration isolation device which comprises a pair of positioning magnets arranged in parallel; the mixed magnet is installed between the pair of positioning magnets in a sliding mode, the direction of a magnetic induction line in the mixed magnet is the same as the direction of a magnetic induction line between the pair of positioning magnets, and buffer spaces are reserved between the mixed magnet and the positioning magnets on the two sides; the elastic piece and the positioning magnet are coaxially arranged, a transmission piece is fixedly installed at one end of the elastic piece, the transmission piece penetrates through the positioning magnet and then is fixedly connected with the mixed magnet, and the transmission piece and the positioning magnet are in sliding fit in the axial direction of the elastic piece. A parallel structure of the positive rigidity of the elastic part and the negative rigidity of the magnetic force is introduced, so that the vibration isolation device has low dynamic rigidity without weakening the original static supporting capacity, the vibration isolation device has low dynamic rigidity and high static supporting rigidity, and meanwhile, the vibration reduction capacity of the vibration isolation device and the supporting strength of external equipment are improved.

Description

technical field [0001] The invention relates to the technical field of vibration isolation devices, in particular to a hybrid excitation vibration isolation device. Background technique [0002] Theoretically, the traditional passive vibration isolator can only attenuate the vibration whose excitation frequency is greater than the natural frequency, and the low-frequency vibration isolation effect is poor. When the stiffness of the vibration isolator is designed to be small to meet the low-frequency vibration isolation requirements, it will lead to static support. Poor stability limits its engineering application in the field of large bearing capacity and low frequency vibration isolation. At the same time, most traditional vibration isolation devices can only weaken part of the vibration intensity on the damped body. For applications in vibration isolation of precision equipment and related fields that require high vibration control, they cannot simultaneously meet the requ...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the vibration isolation device in the prior art cannot meet the requirements of high static stiffness and low dynamic stiffness at the same time, so as to provide a hybrid excitation vibration isolation device

Images