Reinforced concrete protecting layer locator

Reinforced concrete protecting layer locator includes hollow sleeve on the screw rod of the one -piece component that comprises the welding of the screw rod with the axle center and heterotypic end, suit, sets up in hollow sleeve set nut and pad set between terminal surface and the heterotypic end, the inboard section of abnormal shape end and screw rod welded is greater than the solid columnar body of screw rod for the diameter, and outside section is the two sides back formed about the hollow circular cylinder scabbled a section for the oblate cylinder that the cavity cydariform link up about and, and the middle section be the necking down changeover portion, and the outer end of necking down changeover portion has diameter and the oblate cylinder aequilate half slot of through opening from top to bottom, the interior disc and the screw rod of hollow set of bobbin base pass through the screw -thread fit equipment, join in marriage in the section inner chamber of the outside of heterotypic end and be equippe