Client

Escorts Ltd.,
Faridabad

Industry

Material Handling

Challenge

Pick and Carry cranes are unique. While all cranes lift heavy loads, PnCs are permitted to move on public roads with the load. This makes them an ubiquitous tool at construction sites and sometimes factories. Safety regulations for PnCs are understandably much stricter.

 

Our customer, the largest PnC maker in the world, had an ambition to extend the carrying capacity of their new top of the line model – from the previous maximum of 23 tons to 29 tons. However their designers faced an apparently insurmountable challenge – while the crane was able to lift the required weight, it would become unstable when it turned corners. Adding a counterbalance is the traditional way to solve this, but the crane was already at the highest permitted weight and no additional counterbalance could be added to comply with the laws.

Service Area

High Performance Design

Timeline

March 2009
(6 months)

Escorts was able to patent this invention. Till 2023, it remains the only PnC crane maker to offer a 29 ton (recently augmented to 30 ton) capacity model.

Key Engineering Solutions

1. Multibody dynamic simulations were leveraged to completely capture the crane movements.

2. Insights from multibody simulations facilitated the unique design for the crane’s articulated joint.

Solutions

Timetooth applied Multibody Dynamic simulations to completely capture the crane movements – from boom extension, to lift, to steering. This “xray” into the crane’s dynamical behavior led to the discovery of a unique design for the crane’s articulated joint. “Similar to how humans carry a heavy suitcase on one side, by slightly leaning to the other side” the inventor, Rajesh Rao, explained. 

Escorts was able to patent this invention. Till 2023, it remains the only PnC crane maker to offer a 29 ton (recently augmented to 30 ton) capacity. 

Key Highlights

     

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