These walking spider excavators are among the ‘greatest sandpit toys in history.’
Ordinary wheeled and tracked excavators might be extremely risky to operate on the steep slopes and challenging terrain of the Swiss Alps, where walking excavators were first developed.
They started adding wheels and stabilizer feet to their own hydraulic arms in the early 1970s, which allowed them to sit level on a variety of inclines and gave them more leverage, grip, and stability for lifting and ripping jobs.Telescoping hydraulics were made accessible by the late 1970s, allowing those legs and spider wheels to spread out even further.
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