Aviation steel cable pre-tension debugging device

The utility model discloses an aviation steel cable pretension debugging device which comprises a first rotary knob and a clamp used for fixing a steel cable connector, the first rotary knob comprises a first hoop body and a second hoop body, a hinge shaft is rotatably arranged between the first hoop body and the second hoop body, and the first hoop body and the second hoop body are hinged to each other. A clamping groove and a clamping plate are further arranged between the first hoop body and the second hoop body, when the clamping plate is inserted into the clamping groove, a clamping hole matched with the elastic thread sleeve is defined between the first hoop body and the second hoop body, the clamping hole is located between the clamping plate and the hinge shaft, and a pin matched with a pin hole of the elastic thread sleeve is arranged in the clamping hole. Compared with the prior art, the elastic screw sleeve and the first knob are connected into a whole through the pin in the clamping hole, then the