Mechanisms — construction lifting

Recent Blogs

Swing Derrick diagram
Swing Derrick: Radius and Ideal Swing Calculator
Explore boom projection and ideal swing motion. Compare working radius, an entered moment/radius quotient, angular speed and hook plan speed.
Lever Grip Tongs diagram
Lever Grip-Tongs: Hiscox Item 1461 Motion Viewer
See how shackle pull closes lever grip-tongs through their connecting links and upper arms. Compare three schematic positions without a lifting-capacity claim.