Tower Safety Rigging Lab
Teasley Trolley Simulator
Dynamic trolley movement simulator showing how horizontal trolley position and lift geometry affect the top pulley, trolley line tension, vertical leg, tag line, and resultant anchor forces. Forces Are Not Hidden.
Inputs
Load Weight (lb)
Sling Angle θ (degrees from horizontal)
Matched to the Angle field in the Teasley math sheet.
Friction / System Loss (%)
Tag Line Distance From Tower (ft)
Top Pulley Height Above Ground (ft)
Load Height Above Ground (ft)
Load / Trolley Distance From Tower (ft)
Dynamic trolley movement follows this distance.
Hoist Distance From Tower (ft)
Warning Limit (lb)
Tower Type Preset
Mode
On an SST, the farther the trolley/load moves away from the tower face, the more force increases.
Scenario Buttons
Live Force Increase Warning: move the trolley/load farther from the tower to show force increase.
System Status: Green zone.
Teaching Note: dynamic trolley movement shows how horizontal distance changes the top pulley and resultant anchor reactions.
Force Outputs
Top Pulley Force
—
—
Trolley Line Tension
—
—
Vertical Leg Load
—
—
Resultant Anchor
—
—
Tag Line Force
—
—
Vector Breakdown
— / —
Fx / Fy from Teasley math
