Core Summary:
For large power transformers or special coils (e.g., railway locomotive coils), vertical winding machines are superior to horizontal ones. They use gravity to counteract centrifugal force, solving the problem of radial loosening in large coils.
Detailed Classification by Installation Method:
| Feature | Pit Type | Floor Type / Elevating Type |
|---|
| Structural Characteristic | Turntable installed in a pit below ground level. | Turntable installed on ground; operator platform raises/lowers during winding. |
| Operation Logic | Coil descends into the pit; operator and tensioning devices remain at ground level. | Coil remains fixed; operator platform rises. Requires hydraulic or mechanical lifting mechanism. |
| Application Scenario | Workshops with limited crane hook height; short demolding travel after winding. | Workshops where pit excavation is impossible (e.g., existing foundation) but high overhead crane is available. |
| Demolding Advantage | Extremely low crane height required to lift finished coil. | Requires sufficient reserved hoisting space. |
Core Advantage: Vertical winding effectively prevents "barrel" deformation (radial expansion) of large coils caused by self-weight, making it especially suitable for low-voltage windings of large-capacity transformers.