A three-dimensional vibration isolation device with sliding inclined spring

Abstract

The invention discloses a three-dimensional shock isolation / vibration device with a sliding inclined spring, which is composed of horizontal and vertical shock isolation / vibration units connected in series up and down. The horizontal vibration isolation / vibration unit is a thin laminated rubber bearing with a large first shape factor, which contains a high-purity lead core energy dissipation unit; the vertical vibration isolation / vibration unit is supported by a thick laminated rubber bearing with a small first shape factor. The seat and the oblique rectangular compression spring connected to the vertical heavy-duty linear guide rail are connected in parallel. Through the elastic deformation of the low-hardness high-damping rubber and the linear guide rail-linked oblique rectangular spring tension-compression deformation, the vertical shock / vibration can be isolated together, and it can also be changed. The first shape coefficient of the thick laminated rubber bearing and the stiffness coefficient of the rectangular spring reduce vertical vibrations of different frequencies and amplitudes and realize three-dimensional vibration isolation / vibration. The invention belongs to a passive shock / vibration control means, which can be widely used in the shock-isolation layer of the upper cover structure of urban rail transit and the bottom of important large and medium-sized mechanical 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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