Make things convenient for quick assembly disassembly's dry -type transformer

The utility model provides a make things convenient for quick assembly disassembly's dry -type transformer, includes folder, low voltage coil, high -pressure coil and iron core, the iron core has three stem, difference suit on the outer circumference of stem low voltage coil with high -pressure coil, the upper portion and the lower part of iron core are equipped with respectively the folder, the both sides of stem are equipped with the arm -tie respectively, the arm -tie is rectangular shaped plate piece, the upper and lower both ends of arm -tie pass through the bayonet lock respectively with folder fixed connection, the folder adopts square voided plates structure. The utility model discloses a bayonet lock is with arm -tie and folder fixed connection for the iron core can be stable fix on the folder, just the folder adopts square voided plates structure, the stability and the mechanical properties of reinforcing folder, fixed iron core that can be better. Moreover the bayonet lock has quick assembly disass