A three-dimensional automatic adjustable shock absorber

Abstract

The invention relates to an automatic three-dimensional adjustable absorber. The three-dimensional adjustable absorber comprises a protective sleeve; a fixed seat is arranged in the protective sleeve; a support layer, an electromagnetic array layer, a damping layer support layer and a high damping rubber layer are arranged in sequence above the fixed seat; damper springs are arranged uniformly along the peripheral direction between the electromagnetic array layer and the support layer; a hemispherical groove formed by the high damping rubber layer is internally provided with a pendulum cylinder provided with a certain quantity of second electromagnets and capable of freely rolling; a combined sensor and a controller are arranged respectively at the lower part and the middle part of the protective sleeve. According to the automatic three-dimensional adjustable absorber, vibration attenuation is realized by utilizing the damper springs and the damping rubber layer, automatic adjustment for different vibrations is realized by equivalently changing the weight of the pendulum cylinder by utilizing the principle of magnetic attraction, and thus the absorber has the advantages of wide application range, well adaptability, good vibration attenuation effect and the like.

Description

technical field [0001] The invention belongs to the field of vibration reduction of engineering structures and instruments, in particular to a three-dimensional automatic adjustable vibration absorber. Background technique [0002] A large number of precision instruments and equipment such as video surveillance, radio signal collection, and transmission are installed on roadbeds and bridges along expressways and high-speed railways. Most of these equipment are installed on light column or gantry steel supports. Under the excitation of dynamic loads such as wind loads, heavy vehicles, and high-speed trains, light steel brackets will generate high-frequency vibrations, and the high-frequency vibrations of the brackets will first affect precision equipment such as video surveillance, radio signal acquisition, and transmission installed on it. The normal operation of instruments and equipment may even lead to damage to precision electronic circuits, equipment scrapping, and enda...

AI Technical Summary

Problems solved by technology

Under the excitation of dynamic loads such as wind loads, heavy vehicles, and high-speed trains, light steel brackets will generate high-frequency vibrations, and the high-frequency vibrations of the brackets will first affect precision equipment such as video surveillance, radio signal acquisition, and transmission installed on it. The normal operation of instruments and equipment may even lead to damage to precision electronic circuits, equipment scrapping, and endanger driving safety. At the same time, vibration stress will also affect the use of steel brackets, which will lead to fatigue fracture of components and collapse of brackets in the long run, endangering driving safety on the line.

The patent document (CN203098725U) is a three-dimensional pendulum ball tuned mass damper, which has a three-dimensional vibration reduction function. However, the damper only uses steel balls to collide with a high-damping rubber base to consume vibration energy. In addition, the damper Once the device is installed, it cannot be automatically adjusted according to the vibration source, resulting in reduced applicability and poor vibration damping effect

Images