Star infiltration device, and method of measuring gravitational acceleration and soil-bearing capacity of a star

A star infiltration device comprising an infiltrator, and a rammer being provided inside the infiltrator, characterized in that

• the infiltrator sequentially comprises, in order from bottom to top, an infiltrator cone part, an infiltrator tip, an infiltrator power part and an upper plug;
• a conducting pipe is provided inside the infiltrator, and the rammer is disposed in an inner part of the conducting pipe, a ramming surface is provided at a bottom of the conducting pipe inside the infiltrator tip, and a lifting coil is provided in an inner part of the infiltrator tip;
• a distance from a lower end face of the lifting coil to a lowest point of the ramming surface in the inner part of the infiltrator tip is half a length of the rammer, and accelerating coils and a positioning coil are provided in an inner part of the infiltrator power part in order from bottom to top, wherein the accelerating coils comprise a plurality of groups, and a distance from an upper outlet end of the positioning coil to a cushion is half the length of the rammer;
• the lifting coil, the accelerating coils and the positioning coil are all disposed on an outside of the conducting pipe, a position sensor I for detecting a position of the rammer is provided in both a central part of the lifting coil, the positioning coil and each accelerating coil, a position sensor II for detecting the position of the rammer is provided at a position above the ramming surface inside the infiltrator tip, and a position sensor III for detecting the position of the rammer is provided at a position at the upper outlet end of the positioning coil;
• the infiltrator is connected to an infiltrator bracket, the infiltrator bracket comprises three legs, a limiting sleeve, a bracket flange and a leveling ring, the legs are fixed to a lower part of the bracket flange, the bracket flange and the leveling ring are connected to each other by a first group of two leveling shafts on the same axis, the limiting sleeve is provided with a limiting ring at an upper end, and the leveling ring is connected to the limiting ring by a second group of leveling shafts, an axial direction of the second group of leveling shafts is in a direction perpendicular to an axis of the first group of leveling shafts, the infiltrator is arranged in the limiting sleeve, and a plurality of limiting reeds are provided in the limiting sleeve, the plurality of limiting reeds are provided at equal intervals along the circumferential and axial directions of the limiting sleeve, a bearing is provided at an end of the limiting reeds, and a limiting groove is provided outside the infiltrator, while the bearing is disposed inside the limiting groove at a corresponding position,
• wherein a plurality group of displacement solenoid coils are provided at a lower part of the limiting sleeve, and an outer surface of the infiltrator power part is an armature tube made of soft magnetic material, which forms a differential displacement sensor together with the plurality group of displacement solenoid coils in the limiting sleeve.