Limiting piece of radar level meter

The utility model discloses a radar level meter limiting piece which comprises a transmission module, a flange plate, a wave guide rod, a limiting plate, a buffering cushion, a lead screw, a fixing plate, a sliding plate and a supporting plate. The beneficial effects of the utility model are that the limiting plate slides towards the bottom along the two wave guide rods, and the cross section of each wave guide rod is trapezoidal, so that when the limiting plate slides, the buffer pad can abut against the side surfaces of the wave guide rods, and therefore, in order to improve the limiting effect and prevent the limiting plate from moving towards the top, only the lead screw needs to be rotated, and the lead screw thread drives the sliding plate to slide; the sliding plate moves towards the top to abut against the flange plate, and the supporting plate between the sliding plate and the flange plate facilitates buffering, increases the stress area, reduces the pressure intensity and prevents the sliding plate