A Study on the Relationship between Clamping Angle of a Locker and Initial Clamping Force in the Wedge Type Rail Clamp for a Container Crane

Abstract:

The rail clamp is the device to prevent that a container crane slips along rails due to the wind blast as well as to locate the crane in the set position through loading and unloading containers on a vessel in the quay. In order to design the rail clamp, we need to determine the proper wedge angle to minimize the sliding distance of a roller and the proper clamping angle of a locker to generate the initial clamping force of a jaw pad. The researches for the proper wedge angle have conducted. So in this study we look into the relationship between the clamping angle of a locker and the initial clamping force in the rail clamp with wedge angle of 10
. The initial clamping force of the jaw pad was determined by the clamping angle of the locker. Therefore after we measured the locking force of a locker and the tensile stress of extension bar with respect to the clamping angle of a locker, such as 2.18, 3.05, 3.92, 4.80
, we compared the results with the FEA results.

• Periodical: Key Engineering Materials (Volumes 326-328)
• Pages: 1649-1652
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.326-328.1649
• Online since: December 2006
• Authors: Geun Jo Han, Seong Wook Lee, Dong Seop Han
• Keywords: Clamping Angle, Clamping Force, Finite Element Analysis (FEA), Performance Test, Rail Clamp

References

[1] K.P. Franke: Boosting efficiency of split marine container terminals by innovative technology. 2001 IEEE ITSCP (2001), pp.774-779.

DOI: 10.1109/itsc.2001.948758

[2] G.J. Han, H. Lee, J.J. Shim, D.S. Han, C.W. Ahn, and Y.H. Jeon: Study on the Wedge Angle of Wedge Type Rail Clamp for Container Crane. J. of KSPE Vol. 21 No. 9 (2004), pp.119-126.

[3] BS 2573: Design of Cranes, British (1983).

[4] Korea Meteorological Administration: Annual maximum moment wind speed in Busan (2005).