藤崎商会 List of Products and Services

The "TBI Resonator Type-F" is a soundproofing material that effectively eliminates prominent ultra-low frequency sounds such as 4Hz and 8Hz, which are generated by blasting, by utilizing the phenomenon of sound wave resonance. Ultra-low frequency sounds (sound waves below 20Hz) generated by tunnel blasting can cause complaints by rattling the fixtures of nearby houses and creating a sense of pressure on the human body. By combining the "TBI Resonator Type-F" with the "TBI Soundproof Door Type-F," we achieve tunnel blasting without rattling or pressure sensations. 【Features】 ■ Effectively eliminates prominent ultra-low frequency sounds such as 4Hz and 8Hz generated by blasting. ■ By combining with the "TBI Soundproof Door Type-F," we achieve tunnel blasting without rattling or pressure sensations. *For more details, please refer to the PDF document or feel free to contact us.

Tosaki Shokai was established in 1967 in Eba, Naka Ward, Hiroshima City, with the purpose of selling screws. Since then, we have expanded from sales to manufacturing, delivering a variety of products necessary for civil engineering and construction. We promise custom-made products that meet our customers' demands for labor-saving, low cost, and reliable precision. We will deliver these promptly at any time. 【Business Activities】 ■ Sales of hardware for construction and civil engineering, as well as bolts and nuts, and manufacturing and sales of custom-made products. *For more details, please refer to the PDF document or feel free to contact us.

★Newly registered in NETIS in November 2024★ *Vibration barriers serve to reduce construction vibrations simply by being installed on the ground surface; they are a technology for addressing vibration propagation pathways. *Unlike traditional measures for addressing propagation pathways, they do not require large-scale temporary facilities or construction, making them a highly effective technology in terms of workability and safety. *There are two types of vibration barriers: "mass bodies" and "vibration systems," and by arranging them according to their purpose, they demonstrate a high reduction effect.

At tunnel construction sites, vibrations caused by excavation work can potentially impact the surrounding environment and reduce work efficiency. In particular, noise issues for nearby residents and ensuring the safety of workers are important challenges. Vibration isolation barriers contribute to addressing these challenges by suppressing the propagation of vibrations. 【Usage Scenarios】 - Tunnel excavation sites - When wanting to mitigate the impact of vibrations on the surrounding environment - When wanting to ensure the safety of workers 【Effects of Implementation】 - Reduction of vibrations associated with excavation work - Mitigation of impacts on the surrounding environment - Improvement of worker safety