Extension socket and electric maintenance device

The invention provides an extension socket and an electric maintenance device, and relates to the technical field of electric equipment. The extension socket comprises an extension module and a socketmodule; the socket module comprises a socket; the socket is provided with a first lead; the first lead is used for connecting with a plug; the extension module comprises a first lead feeding wheel and a first driving piece; the first lead feeding wheel is used for winding the first lead; and the first driving piece can drive the first lead feeding wheel to rotate around the axis of the first leadfeeding wheel so as to drive the socket to extend. The first lead automatically extends under the effect of the first driving piece, so that the maintenance speed can be accelerated, and constructionis convenient; and the extension module has no need to be carried during operating on a ladder, and the socket is only carried onto the ladder, so that the convenience is improved. 本发明提供种伸缩插座及电力维修装置，涉及电力设备技术领域，伸缩插座包括伸缩组件和插座组件；