Protection structure for bottom detection device in large tank body

The invention discloses a protection structure for a bottom detection device in a large tank. Comprising slow rebound memory space cotton, a silica gel inflation tube, a moving block, a first annular plate, a first connecting rod, a second connecting rod, a second annular plate, a rubber pad, a connecting plate, a fourth annular plate, a third connecting rod, a third annular plate, a linear motor, a shelf, a guide cylinder, a flat moving frame, a pipeline connecting piece, a hard inflation tube, an inflation pump, a U-shaped rubber upper pressing plate, a probe body and a handle. A groove and a notch; the probe body protection structure designed by the invention is an annular plate structure with a notch, the structure can prevent the probe body from impacting a pipeline at the bottom in an oil tank in a moving process, the protection structure has an automatic telescopic function, and rapid telescopic is realized by inflating and deflating a silica gel inflating pipe; and the protection structure is designed