1. How Legs Disruptive … … Wheel Or Caterpillars ?

2. Example : Excavators (1950s-1970s)

4. Now… … We use Electronic to Disruptive Hydraulic How we make it happen?

5. Before After Substitute wheel or caterpillar track chassis Before

6. Substitute wheel or caterpillar track chassis Before After

7. Ex: Electrical Hexapod Walking Robots Electrical Walking Robots, when introduced: Carried fewer play-load per working circle. However, they were: a.Easy to conquer terrain environment or un-structured condition. b.Very high maneuverable, even walking on-to a pickup truck. Van like cars. No more Lift machine to help transfer. Small sub-contractors happy to use it. c.Easy to go through narrow access, most of which without turning radius. Electrical Hexapod Walking Robots use for narrow or confine space. a.Previously done by man power when wheel machines cannot move inside. b.Hydraulic machine are too heavy, less precise. too hard to maintain when oil leakage or machine broken. c.Walking robot is light weight, machine efficient is 80% or higher, no oxygen consumes,no high power ventilation is needed in confine space.

8. Save cost and time(out-bound logistics) ， Each Circle Carry 500kg Material, 10times Play-load Than Manpower Shipping Cost from 2000 HKD to 200HKD. Crane Lorry should be ordered a couple days in advance. Now only takes 10 mins to order a pickup truck, the robot can walk onto it.

9. Save cost and time(in-bound logistic) VS Why big cranes lift small cranes? This happens normally on every construction site! Renting various of cranes with operators, takes thousands shift cost. No crane rental anymore, self-propelled stairs or different levels of platforms

10. Reduce Overlapping Processes. Shorten Construction Time & Saving Costs VS No need to lay access, self- propelled stairs to higher and lower platforms In the case of cranes can’t operated indoor due to lack of headroom. Contractors should lay access for machines. Find the supplier's quotation, arrange sub-contractor on site, pay the laying and dismantling fees, spend few weeks time,etcs. So boring.