Cylinder Luffing Cranes
Cylinder Luffing Type 45-Ton Cranes for Use Aboard Containerships
The market requires feeder containerships to minimize the dead space occupied by cranes and to correspondingly increase the number of containers that can be loaded.
The earliest use of cylinder luffing cranes dates back to their installation aboard relatively small or specific-purpose vessels navigating rivers, canals or lakes in Europe.
Tsuji Heavy Industries Co., Ltd., refining conventional techniques and mobilizing advanced techniques, has developed semi-slim cylinder luffing (SSCL) electrohydraulic deck cranes with a lifting capacity of 45 tons, intended exclusively for full-scale container cycle cargo handling and applicable to a wide range of containership classes from 550 to 3,000 TEUs.
Installation of SSCL cranes would help increase freight revenues through space saving, reduce running costs and thereby improve the operational earning index per voyage substantially.
Six SSCL cranes were delivered to European shipowners, and they are now in successful operation to the full satisfaction of their users.
Features
(1) The concept underlying a cylinder luffing crane is an intention to minimize the space occupied by the crane. A cylinder luffing crane occupies only about 38% of a conventional wire luffing crane with a comparable capacity.
(2) The extra payload space for containers created by reducing the crane-occupied space on the deck can accommodate as many as 500 TEUs aboard a 2,200 TEU containership equipped with three deck cranes, and the number of containers carried directly impacting the freight revenue is increased by as much as 20%.
(3) A cylinder luffing crane, as its luffing system is driven with a hydraulic cylinder, the number of wire ropes used for the whole crane is reduced, resulting in substantial savings in the cost of expendable wire ropes, the crew's labor cost and losses from the interruption of operation.
(4) The 45-ton rated lifting power, with full use of cargo attachments, is significant, and the working radius of 40.5 m (at the rated power of 25 tons) is the greatest in the world for this class.
Tsuji Heavy Industries Co., Ltd.
Address: 177-2, Hikari-machi, Sasebo, Nagasaki 858-8501
Tel: +81-956-47-3113 Fax: +81-956-47-5700
