Vibration isolation device for floating plate

Abstract

The invention discloses a vibration isolation device for a floating plate. The vibration isolation device comprises a sleeve (6), a locking backing plate (5), an upper bearing plate (3) and a base (15), wherein the inner wall of the sleeve (6) is provided with a spacing block shoulder (10); the locking backing plate (5) is fixed on the spacing block shoulder (10) through a connecting plate (5a); the locking backing plate (5) is matched with the lower surface of the spacing block shoulder (10); an adjustment backing plate (4) is arranged between the locking backing plate (5) and the upper bearing plate (3); the upper bearing plate (3) is connected with the base (15) through a gland cover (2); and an elastic element (14) is arranged in the gland cover (2). The vibration isolation device disclosed by the invention is concise in structure and convenient in installation, maintenance and disassembly, can be used for solving the problem that the rubber floating plate vibration isolator in the prior art is easy to age and has short service life. In addition, the vibration isolation device disclosed by the invention has good vibration isolation effect.

Description

technical field [0001] The invention belongs to the technical field of urban rail transit, and in particular relates to a vibration isolation device for a floating plate. Background technique [0002] While rail transit brings convenience to people, it also brings environmental problems such as vibration and noise; traditional rail structures have limited effects in terms of vibration and noise reduction; for the vibration pollution brought by subways and the development of sound absorption and noise reduction technologies at home and abroad Currently, domestic and foreign researches on shock-absorbing and noise-reducing track structures mainly focus on ballastless tracks such as slab tracks, elastic bearing blocks, elastic fasteners, and floating slabs. The floating slab track is a ballast bed structure with the best vibration reduction effect so far. [0003] The floating slab track structure is to insert a linear resonator whose natural vibration frequency is much lower ...

AI Technical Summary

Problems solved by technology

The elasticity and damping properties of rubber materials are easily affected by the ambient temperature, and the heat dissipation coefficient is small. Under the action of alternating load, it is easy to generate heat and cause thermal stress fatigue and aging, which causes the degradation of elastic damping properties, and has poor anti-pollution and acid corrosion capabilities. The frequency range of use is narrow, so it must be replaced regularly

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