Low-noise vibration excitation support

Abstract

The invention belongs to the field of concrete tamping devices, and discloses a low-noise vibration excitation support, which includes a vibration exciter, a connection base and an elastic element. The vibration exciter is tightly fixed on the connection base, and the elastic element is located under the connection base. And it elastically supports the connection base, and the elastic element is arranged around the exciter. In order to avoid the resonance of the connecting platform when the vibrator is working, the first-order structural modal frequency of the connecting platform is greater than 1.15 times the maximum operating frequency of the vibrator; the vibration system composed of the elastic element and the weight of the heavy object supported during operation The first-order natural frequency is less than half of the minimum working excitation frequency of the vibrator. The structure of the low-noise excitation support of the present invention is simple, easy to use, and high in vibrating efficiency; it has the characteristics of low working noise, health and environmental protection, each part is not easily damaged, and it is economical and environmentally friendly, and can be widely used in concrete prefabrication The vibrating production of parts can be applied to the vibrating production of castings.

Description

Technical field [0001] The invention belongs to the field of mixed soil tamping devices, and specifically relates to an elastic support for supporting vibrating operations when producing concrete prefabricated components. Background technique [0002] When pouring concrete components, vibration must be used to improve the fluidity of the concrete, eliminate air bubbles in it, make the concrete densely combined, eliminate defects such as internal voids and surface pockmarks in the concrete, so as to improve its strength and ensure the quality of the concrete components. The traditional vibrating methods are vibrating rods and attached vibrators. The latter uses a vibrating motor with an eccentric block and is fixed on the mold. The vibration generated by the vibrator is indirectly transmitted to the mold plate through the mold. This kind of technical solution has high vibration and noise, and it is easy to cause injury to the operator. [0003] In order to solve the above-mentioned...

AI Technical Summary

Problems solved by technology

However, it has been found in practice that, on the one hand, due to the large size of the vibrating platform, its flatness is not easy to guarantee, and it is also prone to deformation after repeated use. There is always a large gap, so the vibrating energy has a large transmission loss; on the other hand, due to the tight fit between the vibrating platform and the mold, the vibrating platform itself will undergo structural elastic vibration during the vibrating process, and the vibrating platform itself will vibrate with the mold. Local high-frequency impacts also occur, causing ear-piercing noises. The measured value of the on-site noise intensity generally exceeds 110dB(A), which has a great impact on the surrounding environment, will seriously damage the hearing of workers, and may easily lead to mold, workbench or vibration exciter. damage, and the vibrating efficiency is greatly reduced due to the loss of energy through the impact

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