Headframe Layout and Design

Hoisting plant general arrangements are produced for feasibility and final designs

Headframes are modeled with a finite element analysis program and designed for working and rope breaking loads

Hydraulic dumps or scroll plate supports are designed

Rope changing procedures and handling equipment are provided

Finite Element Analysis of Headframes, Bins, and Structures

Headframes are modeled with a finite element analysis program and designed for working and rope breaking loads

Bins are sized for production rates and storage capacities

Foundations, air plenums, piles and/or spread footings are integrated into the top of shaft design

Shaft Design

Rectangular timbered, concrete lined and unlined circular shafts are designed

Shaft liners are designed to withstand hydrostatic pressures if required

Shafts can be designed for sinking through frozen ground

Compartments are sized for skips, cages and services, integrating the entire hoisting plant for production and service requirements

Rope and Fixed Conveyance Guiding System Design

Rope guides are designed with either cheese weights or spring tensioned glands

Wood, steel and composite guides are designed using Slam Force Analysis calculations based on guide support misalignment and conveyance effective mass

Guides are designed with low stiffness supports to absorb shocks from conveyance slamming loads

Loading Pockets Design

Loading pockets are designed with pan, chain or vibrating feeders to regulate the ore flow

Measuring bins are designed for volumetric or weight measurement

Transfer cars or pantleg chutes are designed for multiple skip loading

Hydraulic Dumps, Bins, Chutes, and Conveyors Design

Hydraulic dumps are designed to reduce hoisting cycle times

Bins are sized for production rates and storage capacities

Conveyors are designed to match mill input rates

Upgrading Existing Hoisting Plants for Higher Capacities

Hoisting plants are evaluated for ultimate capacities

Hoisting plants are inspected for deficiencies and repaired

Member reinforcement or additions are designed to reduce high stressed members

Headframes are re-rated for increased production rates and loadings

Shaft Sinking

Galloway Designs

Buckets & Crosshead Gear Designs

Underground Salt Mine Shaft Maintenance Platform

A 35'0" tall aluminum work stage, consisting of four decks, was designed for guide changing, scaling, and concrete lining of a salt mine.
The decks are hinge connected to the frame and can be manually raised during ascent or descent while performing shaft maintenance.
The mid decks can be removed during guide changing operations. The bottom deck is designed to accomodate heavy equipment.
There are two monorails on either side of the work stage for guide changing operation.