Design Challenge - November 2014

Pope Design

John PopeThis dual articulating, dual snow blower is designed for clearing runways and ice roads, and as I was able to keep the overall height to just under 14ft, it could also be used on most major US highways and many major secondary roads. When used in single snow blowing configuration, the rear snow blower tucks under the frame and follows behind the front snow blower. When the machine is used in dual configuration, the rear snow blower swings out to enable the clearing of a 24ft-wide path in one pass.

It’s all diesel electric (including the lift actuators for the auger and impeller), with a powerplant in the front chassis and an identical one in the rear chassis, so it’s a much simpler system with almost none of the torque loss that would result from hydrostatic motors and pumps.

Because each wheel assembly has its own traction motor, this enables the use of independent suspension and removes the need for a solid axle, which allows the engine to sit much lower in the frame to help bring the overall height down. It also allows each wheel to turn at a different speed when the unit articulates, which helps traction, control and tire wear. The independent suspension also eliminates the need for a trunnion in the upper frame to allow the machine to ‘flex’ while using the on and off ramps. It can also turn 180° in place by rotating both chassis and the cab at the same time and counter-rotating the drive wheels simultaneously.

The upper catwalk spreads the load around the thin middle section of the upper frame to allow the cab to sit lower in the frame so as to keep the overall height down.

More images from Pope Design

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BIOGRAPHY


Pope Design

Jon Pope has designed heavy equipment for over 17 years. He has worked for a variety of off-highway OEMs, whether as an independent design consultant or employed by Teague

 


CONTACT DETAILS

Email: jpope@pope-design.net

Web: www.pope-design.net

 

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