Abstract: A posture stabilizing structure for a swimming pool sewage suction machine includes a base, a driving wheel assembly, a sealing box, a water pump assembly and a collecting box. The driving wheel assembly is connected to the base, the water pump assembly is arranged inside the base, the collecting box is arranged inside the base and communicated with the water pump assembly, and the sealing box is arranged on a middle part of a bottom of the base. The interior of the base is divided into an inner ring water distribution bin and an outer ring water distribution bin through the collecting box. A gas-liquid circulation hole is further defined in both a front end and a rear end of the bottom of the base and communicated with the outer ring water distribution bin.

Abstract: A swimming pool sewage suction machine includes a base, a control system, a battery assembly, a driving wheel assembly, a sealing box, a water pump assembly, a collecting box, a top cover assembly, a brush assembly and a charging device and further includes a collision plate assembly, a collision return assembly, a rotary rod assembly, a magnetic induction piece and a Hall plate. The interior of the base is divided into an inner ring water distribution bin and an outer ring water distribution bin through the collecting box. The inner ring water distribution bin is annular, a middle part of the collecting box is provided with an up-down through annular docking base and is sleeved on the water pump assembly.

Abstract: The present invention discloses a method comprising: A. acquiring the current I0 and I, and setting It1, It2, IR, Vmin, and Vmax. B. acquiring the speed V, and setting the speed VL and VH; C. a mowing motor runs in a low-speed mode, and a self-propelled motor runs at the speed VH; D. when encountering grassy areas, if I0<I<It1, keeping unchanged; if I?It1 and lasting for T1, skipping to E; if I=IR, skipping to G; E. the mowing motor switches to the high-speed mode; F. the mowing motor switches to the low-speed mode, V is switched to VH; G the mowing motor switches to the high-speed mode, V is adjusted to VL; H. the mowing motor stops, the self-propelled motors stop, then retreat and work along the original path, after attempting for M times, if the self-propelled motors stop again, bypassing and skipping to C to continue working.