Inner right angle location device of reinforced concrete wall base plate combination portion

An inner right angle location device of a reinforced concrete wall base plate combination portion belongs to the technical field of building construction and comprises an inner right angle location steel mould, a location connection steel bar support, a plane template, a vertical ridge, a transverse ridge and a wall penetration tensioning fixed bolt. The location connection steel bar support is arranged on a concrete cushion layer, the inner right angle location steel mould is fixed at the top end of the location connection steel bar support, a lateral face upper plane of the inner right angle location steel mould is parallel to the upper surface of the concrete base plate, the plane template is vertically arranged along the other lateral face of the inner right angle location steel mould, the vertical ridge and the transverse ridge are sequentially arranged outside the plane template, and the wall penetration tensioning fixed bolt is arranged at the position of the transverse ridge. The inner right angle loc