Method for assembling compressor, and bundle guide device

A method for assembling a compressor including a bundle having a rotor therein, a casing into which the bundle is inserted, and an inside traveling device supporting the front end of the bundle in the direction of the insertion into the casing and capable of traveling in the insertion direction on the inner peripheral surface of the casing, and an outside traveling device supporting the rear end of the bundle in the insertion direction and capable of traveling in the insertion direction on a base surface disposed outside the casing and an intermediate traveling device supporting the intermediate portion of the bundle between the inside traveling device and the outside traveling device in the insertion direction and capable of traveling on the base surface being removable from the compressor, comprising:

• a bundle arrangement step in which the bundle is arranged behind an opening of the casing in the insertion direction;
• a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both the outside traveling device and the intermediate traveling device;
• a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both the inside traveling device and the outside traveling device;
• and
• wherein when the intermediate traveling device supports the intermediate portion of the bundle between the inside traveling device and the outside traveling device, the distance from the intermediate traveling device to the inside traveling device in the insertion direction is longer than the distance from an opening of the casing to the front edge of a through-hole in a peripheral wall portion of the casing in the insertion direction of the bundle.