Mechanical connection hoop

The utility model discloses a mechanical joint hoop positioner used for water injection well field in oil field, which solves the problem of underground sleeve pipe joint hoop position. The utility model is characterized in that: one end of a spacer (2) with a convex edge is arranged inside a rabbet at the outer wall of a body (2) and the other end is clamped by a gland (5) sleeved on the body (1), forming a plurality of empty cavities (4) arranged internally in a spring piece (3) between the body (1) and the spacer (2); the other end of the gland (5) is locked using a snap spring (6). The utility model has the advantages of accurate determination of the position for underground sleeve pipe joint hoop, small labor intensity, no need of extra cost and a favorite device for oil field.