Installation tool for a fixing pin and an installation method

An installation tool for a fixing pin, wherein the installation tool comprises a tubular body, a pressing pin and a driving nut;

• the tubular body is provided with a cavity inside, which is capable of accommodating a plurality of fixing pins, a surface of the tubular body is provided with a first groove and a second groove which are opposite to each other and connected to the cavity, two ends of the tubular body are provided with a first opening and a second opening respectively which are connected to the cavity, wherein a plurality of fixing pins are allowed to enter the cavity through the first opening, and wherein each of the plurality of fixing pins is configured to leave the cavity through the second opening one at a time in sequence;
• the pressing pin is provided movably on the tubular body through the first groove and the second groove, and both ends of the pressing pin are extruded from the surface of the tubular body;
• the driving nut is configured to rotate around a central axis aligned with the cavity, is connected to the tubular body at a first end of the tubular body, and is capable of driving the pressing pin to move towards the second opening;
• wherein the installation tool also comprises a pressing cover provided through the surface of the tubular body, the pressing cover located immediately distal of the driving nut and immediately proximal of the pressing pin, wherein the driving nut can drive the pressing pin to move towards the second opening by the pressing cover, and a fixing groove corresponding to the pressing pin is provided on the pressing cover;
• and
• the tubular body also comprises a converging portion at a second end, the converging portion comprising a tapered structure having a first diameter adjacent the second end of the tubular body that is identical to a diameter of the tubular body and having a second diameter opposite the second end of the tubular body that is smaller than the diameter of the tubular body, at least part of the cavity in the converging portion has an inner diameter smaller than a diameter of the fixing pin, and the fixing pin can be used for fixing a balancing weight of a turbine rotor.