Prevent location spacing collar that well lid subsides

The utility model discloses a prevent location spacing collar that well lid subsides belongs to the municipal construction field. The utility model discloses a cylindric circle body (1) and set up in the wrong platform (2) of cylindric circle body (1) inner wall, wrong platform (2) also is cylindricly, and the width of wrong platform (2) is 10 -15mm, perpendicular distance between cylindric circle body (1) top and cuo tai (2) top equals the cylindric height that extends section (4) of well lid. Use the utility model discloses a during prevent location spacing collar that well lid subsides, will the utility model discloses a top of pit shaft is arranged in to the location spacing collar, then places the section of the cylindric extension in the well lid in wrong bench, and wrong platform makes well lid and pit shaft concentric locating as the cylindric carry on table who extends the section to can prevent the well lid to subside. Because the perpendicular distance between cylindric circle body top and the wrong bench top portion equals the cylindric height that extends the section of well lid, work as the well lid place in the utility model discloses an in the time of on the spacing collar, the lid just with the utility model discloses the cylindric circle body laminating of spacing collar.