Crank type anti-tripping handle

The utility model discloses a crank type anti-tripping handle which comprises a crank, wherein a sleeve sleeved together with the input end of a driven shaft of a driven device in a clamping manner is arranged at the output end of the crank, a groove ring is coaxially arranged on the circumference of the sleeve, a slideway and a slide part sliding into the groove ring along the slideway are fixedly arranged on a shell of the driven device; the crank type anti-tripping handle further comprises a spring for elastically pressing the slide part in the groove ring; when the slide part is elastically pressed in the groove ring, a limit relationship is formed between the slide part and the groove ring in the axial direction of the groove ring, so that the purpose of preventing the handle from tripping is achieved; a bearing is coaxially sleeved in the groove ring; the slide part comprises a slide bar capable of sliding along the slideway, and a slide plate fixedly arranged at the end part of the slide bar, wherein t