videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Demolition Volvo Walk Around, Conexpo 2014 Preview - John Deere 644K - Cat 730C - Doosan DX140LCR-3, Cat 924K Agricultural Wheel Loader Walkaround