Hiza guruma (膝車?) (Knee Wheel) is one of the original 40 throws of Judo as developed by Kano Jigoro. It belongs to the first group of the traditional throwing list in the Gokyo no waza of the Kodokan Judo. It is also included in the current 67 throws of Kodokan Judo. It is classified as a foot technique (ashiwaza).
vector illustration of Ashi-Guruma Judo throwing technique.....One system I have studied.