Three-dimensional vibration isolation device with sliding oblique springs

Abstract

The invention discloses a three-dimensional shock / vibration isolation device with sliding oblique springs. The three-dimensional shock / vibration isolation device with the sliding oblique springs is formed by a horizontal shock / vibration isolation unit and a vertical shock / vibration isolation unit which are connected in series in the up and down direction. The horizontal shock / vibration isolation unit is a thin laminated rubber bearing with a large first shape coefficient and contains a high-purity lead core energy consumption unit. The vertical shock / vibration isolation unit is formed by connecting a thick laminated rubber bearing with a small first shape coefficient and oblique rectangular compression springs connected with vertical heavy-load linear guide rails in parallel, vertical shock / vibration is isolated together through elastic deformation of low hardness and high damping rubber and tension and compression deformation of the oblique rectangular springs linked with the linear guide rails, the first shape coefficient of the thick laminated rubber bearing and the stiffness coefficient of the rectangular springs can also be changed, vertical vibration at different frequencies and amplitudes is reduced, and three-dimensional shock / vibration isolation is realized. The three-dimensional shock / vibration isolation device with the sliding oblique springs belongs to a passive shock / vibration control measure and can be widely applied in shock isolation layers of upper cover structures of urban rail transit and the bottoms of important large and medium-sizedmechanical equipment.

Description

technical field [0001] The invention relates to a three-dimensional vibration isolation device with a sliding inclined spring, which belongs to the technical field of vibration isolation in civil engineering and mechanical engineering. Background technique [0002] With the shortage of urban land, the traditional two-dimensional layout pure traffic development model can no longer meet the development of the urban system, and the development of a three-dimensional urban function superposition by using the upper space of the traffic depot has become a new development model. The superstructure of urban rail transit is the product of the new three-dimensional layout, which can further develop my country's transportation construction on the basis of saving land resources. At present, the development of superstructure buildings requires a transfer floor, that is, a large-thickness cover plate, and the overall structure is characterized by being heavy at the top and light at the bo...

AI Technical Summary

Problems solved by technology

At the same time, the foundation of the superstructure of urban rail transit is directly arranged on the vibration source excitation caused by the subway, which causes its impact on the environment to be greater than that of the buildings along the track, which brings problems such as vibration and noise pollution caused by urban rail transit , it is necessary to take corresponding vibration control measures to reduce the vehicle-induced vibration of the superstructure

[0003] On the other hand, for large and medium-sized precision instruments sensitive to vibration in buildings along the subway line, the working environment is harsh, and their operating status directly affects the safety and data reliability of the instruments. However, the level and Vertical vibration will affect its normal operation, so measures need to be taken to reduce the vibration of such equipment

[0004] A relatively mature seismic isolation technology solution is to use laminated rubber bearings. However, this type of bearing has a large vertical stiffness and can only isolate horizontal vibrations in buildings, but cannot reduce vertical vibrations in buildings and large and medium-sized equipment.

At present, some scholars have proposed three-dimensional seismic isolation devices, but most of the seismic isolation devices have a single vertical vibration isolation target, which cannot adapt to the adjustment of the support stiffness in a wide range, and the vertical stiffness is not clear, such as a single thick laminated rubber support. If the vertical stiffness of the seat is too small, the horizontal stiffness cannot meet the structural requirements, and it cannot be applied to urban rail transit superstructures and large and medium-sized precision instruments

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