ゲルブ・ジャパン List of Products and Services

Buildings/devices shaking is a problem. You want to take measures against vibrations but don’t know how… This is for you! Gelb Japan, with proven results in Europe and Japan, will propose the optimal device. What is TMD? It stands for Tuned Mass Damper. It suppresses vibrations of the target object by attaching a weight (mass) to the device. It is effective in both vertical and horizontal directions. As a passive type damper, it does not require power or other energy for operation, providing stable performance. It is effective for structures like cantilever balconies, where it is difficult to increase rigidity. Gelb's TMD has been used in the Millennium Bridge in London, UK, and has numerous achievements worldwide. (Target examples: bridges, stairs, stadium roofs, chimneys, masts, etc.)

We will introduce "Earthquake measures for buildings and machinery equipment." Our company has a long track record in earthquake measures for heavy machinery. Vibration control devices for turbine generators at nuclear and thermal power plants have been in use for over 40 years and are still operational worldwide. The scope of our earthquake measures extends widely to nuclear and thermal power plants, petrochemical and gas plants, high-pressure transformer equipment, and vibration-sensitive research equipment. 【Earthquake Measures System】 ■ Base Control System (BCS) ■ Tuned Mass Damper (TMD) *For more details, please refer to the PDF materials or feel free to contact us.

Our company conducts installation and adjustment work for viscous dampers and spring elements, as well as installation supervision work and measurement and analysis of vibrations and solid sounds generated by machinery and equipment. We provide economical vibration isolation foundations that meet customer requirements for various types of equipment. The technology for reducing vibrations has been researched and refined at Gelb for many years to ensure the safety and reliability of machinery. If you are troubled by even very small vibrations or noise in your surroundings, Gelb is here to support you. 【Areas of Activity (Partial)】 ■ Installation and adjustment work for viscous dampers and spring elements, as well as installation supervision work ■ Measurement and analysis of vibrations and solid sounds generated by machinery and equipment ■ Engineering from the provision of fabrication drawings for both reinforced structures and reinforced concrete structures to construction supervision ■ Foundation design for machinery and equipment or building structures, considering cost-effectiveness based on customer specifications *For more details, please download the PDF or feel free to contact us.

This document explains the vibration isolation of vibration testing machines. We will discuss our proposal for floating foundations for vibration testing machines, the advantages of metal springs, and the vertical locking mechanism. For equipment that intentionally generates vibrations, such as vibration machines and earthquake simulators, it is important to implement vibration isolation measures to prevent testing losses. [Contents] ■ We propose floating foundations for vibration isolation of vibration testing machines. ■ The advantages of metal springs for vibration isolation of vibration testing machines are recognized. ■ Range of proposals from Gelb. ■ Vibration isolation is effective for frequencies above the value obtained by multiplying the natural frequency of the vibration isolation components by the square root of 2. ■ The vertical locking mechanism allows for the secure seating of floating foundations. *For more details, please download the PDF or feel free to contact us.

This document introduces the elastic support of power plant structures and equipment. It provides detailed information on "vibration control" and "earthquake measures." Additionally, it discusses "adjustments during ground subsidence" using a gel elastic support system. The content is presented clearly with images and diagrams, making it a useful reference when considering implementation. We encourage you to read it and make use of it. 【Contents (partial)】 ■ Vibration measures for power plant structures and equipment ■ Vibration control ■ Earthquake measures ■ Adjustments during ground subsidence *For more details, please download the PDF or feel free to contact us.

"Calmfloor" is an active vibration control device that immediately exhibits vibration suppression effects in response to sudden vibrations occurring at construction sites. It can be brought in when vibrations from heavy machinery operations, concrete pouring, or pile driving propagate to surrounding buildings, leading to complaints or risks of work interruption, and it can be operational right away. With a portable size and powered solely by electricity, it is well-suited for immediate response on-site. It is also useful as explanatory material for site managers and nearby residents. 【Features】 ■ Easy installation and immediate effectiveness: Can be used right away without disrupting the flow of construction. ■ Versatility: Effective during pile driving, heavy machinery operations, and when using vibrating tools. ■ Operates with just one power source: Automatically activates by simply connecting to a 100V outlet. *For more details, please download the PDF or feel free to contact us.