Ladder gantry crane design

 ①, climb the ladder   overhead gantry crane   installation location: arranged at the rigid legs.
②, ladder width: 600 mm.
③, ladders main limb: thickness 3 mm with folded trough. Also channel 12 can be used directly.
④, stepping ladder: textured board with a 3 mm thick hems production. Short side about 5 mm high.
⑤, ladders on both sides of the fence. Wire and tube production.
⑥, ladder and outrigger design with high contact at the 100-150 mm high stand. Standoffs with the 12th channel welded together. Generally have 3-4 stand.
⑦, at no fence into the cab. There is the other side of the main limb ladder fence and a pass to top.
⑧, enter the cab platform upwards 1600-1800 millimeters. There is a handle. For the driver's cab from the platform to the step ladder leg, hand grasp with. Objective: To secure.
⑨,  bridge gantry crane  ladder stepping interval set by the requirements of ergonomics. Typically 250-300 mm.