Umbrella-shaped aperture detection device special for cast-in-place pile

The utility model relates to a special umbrella-shaped aperture detection device for a cast-in-place pile, which comprises an exploring tube, a leg opening disc and a collecting box, the leg opening disc and the collecting box are arranged on the exploring tube, a plurality of measuring legs are arranged on the leg opening disc, lengthened legs and triangular blocks are respectively arranged on the measuring legs, and limiting grooves for connecting the measuring legs are formed in the collecting box. A sensor is arranged on the measuring leg, and a signal line is further arranged in the exploring tube; the device is high in practicability and very simple to operate, can effectively detect the hole-forming quality of the cast-in-situ bored pile, and solves the problem of hole diameter detection of the hole-forming quality of the cast-in-situ bored pile. 本实用新型涉及一种灌注桩专用伞形孔径检测装置，包括探管、设置在探管上的开腿盘和收束盒，所述开腿盘上设置有若干个测量腿，所述测量腿上分别设置有加长腿和三角块，所述收束盒上开设有用于连接测量腿的限位槽，所述测量腿上设置有传感器，所述探管的内部还设置有信号线；本实用新型实用性强，操作起来非常简单，能够能够有效针对钻孔灌注