DESIGN TEAM

Ivan Lipkov

 

MENTOR

David Kelly

 

CHALLENGE 

Develop an excavator to work in dense urban areas. Carrier weight is below 5 tons.

 

 

 

COMPACT EXCAVATOR

CONCEPT

DESIGN RESEARCH

I visited several construction sites to take a look at the excavation and other essential processes. They were quite interesting and exciting to watch.

CONCEPT IDEATION

There are shown key sketching stages of conception and package searching. 

The transformable chassis was meaningful for this project.

Digging mode

Driving mode

HYDROLIC CONCEPTION

In this conception excavator's arm consists of hydraulic cylinders. It allows to make 3-dimensional movements of the bucket.

Hydraulic cylinders (x3)

Rails for the cabin

Rotating cabin

Bucket with

3 dimensional movements

OUTRIGGER CONCEPTION

Rotational cabin and movable outriggers are key features of this conception. 

KEY IDEA

FINAL MODEL

My concept for a lightweight excavator was designed for work in dense urban areas, particularly tiny streets and squares. I worked on this project together with my mentor, and from the start we decided to use wheels instead of tracks. This is a big advantage, as it means the excavator can arrive at the working area by itself, without the need for an additional truck.  

SIMPLIFIED DRAWING

The key feature of this project is the drive wheel/outrigger combination. A power unit under the cabin supplies each drive wheel through an electric motor installed inside its shock absorber, which then transfers power to the wheel via shafts and cogs – the main cog is placed inside the rim. Each outrigger is moved via a telescopic hydraulic cylinder. This package allows the outriggers to rotate separately in any position and to optimize machine positioning in dense urban areas.  

DIGGING MODE

The bucket has three dimensions of movement, helping the operator to excavate faster and easier, with relocation during  the work process becoming less essential. The chassis also transforms easily from digging to driving mode. To activate the road mode, the driver rotates 180° and leaves the bucket at the rear of the cabin. 

DRIVING MODE

In road mode, the driver rotates 180° so that the bucket is behind the cabin

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The bucket is controlled with three hydraulic cylinders (left and right beams are telescopic) and can move left and right, up and down. 

PUBLICATION

This project was published in the Industrial Vehicle Technology International Magazine in 2015 June Issue

The End. Thanks for wathcing =)