Spiral suction type dredging robot with self-rescue function and crawler chassis

The invention discloses a spiral suction type dredging robot with a self-rescue function and a crawler chassis. The spiral suction type dredging robot can achieve underwater harmless continuous movement type rapid dredging, and has the self-rescue function. The dredging robot comprises a platform framework, the crawler chassis arranged on the platform framework, a silt sucking mechanism, a dredging mechanism, an anti-collision guide device, a rescue unit, a control unit and a visual unit. The silt sucking mechanism of the dredging robot adopts two-stage collecting and pumping, so that the dredging effect is good; a spiral conveyor is adopted to collect silt in a spiral suction mode, the disturbance is small, and secondary pollution is avoided; moreover, a first-stage collecting mechanism and a second-stage collecting mechanism can be used in a combination mode and also can be independently used so as to adapt to different use environments, so that the use of the dredging robot is moreflexible; the anti-collis