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Galloway hoists for Scissor Creek shaft construction

Galloway hoists for Scissor Creek shaft construction

Project:

As part of its $2.8 billion capacity expansion project, Potash Corp of Saskatchewan undertook the sinking and development of a new service shaft at Scissors Creek near Rocanville, Saskatchewan. Construction relied on a working platform or galloway that progressively increases the shaft depth. To raise and lower the platform, Timberland Equipment supplied four hoists (two left hand and two right hand) working together. Each of the 50-ton winches have a working rope capacity of 2,940 m of 48 mm diameter wire rope The winches are electrically powered with PLC-controlled variable frequency drives.

Challenge:

At the end of the shaft construction, the hoists will have to recover the galloway from the bottom of the shaft. The hoists are required to work at the maximum linepull rating through all layers until all the rope is wound back on the drum. This application creates huge crushing forces on the drum barrel and spreading forces on the drum flanges, requiring our engineers to create a very specialized “heavy duty” design.

Success:

Shaft completion is scheduled for early 2013

For further information, contact:

Timberland Equipment Limited
Troy Smith
Product Coordinator
519-537-6262

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