Implement earthquake measures for overhead cranes as part of BCP (Business Continuity Planning) strategies. We are also introducing them for cranes used in vehicle inspection and repair facilities.
Ceiling cranes are essential equipment used in various manufacturing industries, including automobile and railway factories, for transporting heavy objects. However, in recent years, numerous accidents have occurred on-site due to the frequent occurrence of massive earthquakes, such as the following: 1. Derailment caused by bouncing or lifting, resulting in the ceiling crane falling. 2. Falling of the running rail due to insufficient strength of the fixing hardware. As a result, there have been cases where employees were trapped under the crane, and the resumption of factory operations was significantly delayed, leading to major impacts on both safety and the economy. By introducing the following products, we can prevent derailment and sudden falls of ceiling cranes caused by earthquakes. 'Crane Gripper' By integrating the saddle and gripper, it maintains a state of gripping the rail, making it physically difficult to disengage. 'Rail Keeper' It has greater strength than conventional hook bolts, reducing the risk of the crane falling along with the rail. *You can also view experimental materials from the PDF download. Please feel free to contact us for inquiries.*
Inquire About This Product
basic information
【Case of the Kumamoto Earthquake】 ■ Companies in Kumamoto Prefecture There were a total of four earthquakes with a seismic intensity of 6 to 7, but the overhead crane did not fall, allowing production to continue. ■ Steel suppliers in Kumamoto Prefecture Although they suffered damage such as the falling of ceiling panels and the collapse of steel materials, the overhead crane remained intact, enabling them to ship steel materials just a few days after the earthquake. 【Basic Structure】 ■ Integration of the saddle and gripper. ■ Maintaining a gripping state while ensuring a certain gap with the rail. ■ The claw section follows the lateral undulations of the rail, achieving a structure that is physically difficult to disengage while maintaining a gripping state on the rail.
Price range
Delivery Time
Applications/Examples of results
Sales performance is approximately 2,900 units, with achievements nationwide.
catalog（3）
Download All Catalogs![[Information] Introduction to Measures for Preventing Derailment and Falling in Overhead Cranes](https://image.www.ipros.com/public/catalog/image_generated/01/d11/438487/20181101181040_IPROS13930612366569185254_1.jpg?w=120&h=170)
![[Information] Proposal for Rail Keeper](https://image.www.ipros.com/public/catalog/image_generated/01/a32/415031/415031_IPROS3802060178909649668_1.jpg?w=120&h=170)
Company information
Imai Iron Works Co., Ltd. is a company primarily engaged in the design, manufacturing, maintenance, and inspection of hoist cranes. Since its establishment, we have continued research and development and have become one of the few labor bureau-approved factories for hoist cranes in the prefecture. Additionally, we also design and manufacture various pressure vessels. Please feel free to contact us.