Stepless height adjusting type built-in type vibration isolating device

Abstract

The invention relates to a stepless height adjusting type built-in type vibration isolating device which comprises a connection sleeve and an elastic vibration isolator, and further comprises a height adjusting thread piece, threads are arranged in at least partial inner surface of the connection sleeve and at least partial outer surface of the height adjusting thread piece correspondingly, the connection sleeve and the height adjusting thread piece are connected in fit mode through the threads, and at least part of the height adjusting thread piece is arranged above the elastic vibration isolator. The vibration isolating device solves the problem existing in the prior art that inconvenient maintenance and adjustment are brought by solidified connection or integrated arrangement of a support stop block and a floating plate; and the stepless height adjusting type built-in type vibration isolating device which can truly achieve precise height adjusting of the floating plate and more convenient maintenance and change depending on the thread structure without the need for arranging a height adjusting spacer is provided, not only can be applied to all kinds of track transit floating ballast bed structures, but also can be widely applied to industry rotation equipment elastic vibration isolation foundation engineering and other fields, and has broad market application prospects.

Description

technical field [0001] The invention belongs to the field of vibration control, and in particular relates to a vibration isolation device, in particular to a built-in vibration isolator which can be widely used for vibration isolation of rail floating slab track beds, equipment or equipment foundations and the like. Background technique [0002] Vibration and noise are recognized as the most widely affected public hazards, and they are also a problem that needs to be solved urgently in the development of rail transit in recent years. Among the existing rail transit vibration and noise reduction technologies, the most successful practical application is the component floating technology, typically the floating ballast bed technology, which has high vibration isolation efficiency and stable working performance, which has become a consensus in the industry. The Chinese patent No. ZL2004100354411 discloses a floating track bed structure, wherein the built-in floating plate is pr...

AI Technical Summary

Problems solved by technology

Although the above-mentioned technical solution can successfully realize the elastic support of the floating slab, many floating ballast beds have been in dark, humid and harsh conditions for a long time due to the solid connection or integrated setting of the key structure used for support—the support block and the floating slab. In the working environment, once the support block is damaged or severely corroded, it will be very difficult to repair and replace, which may directly cause the floating track bed to fail to work normally and interrupt the rail operation traffic

The design life of the floating slab is 100 years, and the well-maintained concrete structure can generally meet the above requirements, but the life of ordinary carbon steel materials with spray paint or hot-dip galvanized anti-corrosion treatment is generally 20-30 years, which is obviously impossible without replacement. Meet design life requirements

In addition, in the current structure of the floating ballast bed, the height adjustment and leveling of the floating slab are realized by setting the height adjustment spacer between the spring vibration isolator and the support block. It is prone to deformation and difficult to distinguish and manage if there are too many types of height-adjusting gaskets. In practical applications, the specifications of height-adjusting gaskets are limited, and it is difficult to combine any thickness, so it is impossible to achieve real accurate height adjustment. On the other hand , when dealing with problems such as foundation settlement after operation, it is also necessary to adjust the thickness of the height-adjusting gasket, so it also involves the reuse and management of the height-adjusting gasket, which is very inconvenient

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