| CPC E02D 13/04 (2013.01) | 18 Claims |

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1. An inclination angle control instrument for screw anchor installation, the inclination angle control instrument comprising:
a triangular base (1);
side plates (2) hinged to three sides of the triangular base (1) respectively;
a platform assembly (4) for placing a screw anchor clamp (3) being arranged above the triangular base (1);
transmission assemblies (5) arranged on the platform assembly (4), wherein each of the transmission assemblies drives a corresponding one of the side plates (2) to rotate on the triangular base (1); and
a driving device (6) for driving the transmission assemblies (5) to operate being provided inside the triangular base (1), wherein an output end of the driving device (6) extends to an interior of the platform assembly (4) and is connected to each of the transmission assemblies (5).
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