Pressing device and method for measuring assembly clearance of annular lead of generator

The invention discloses a generator annular lead assembly clearance measurement pressing device and method, and relates to the technical field of generator design and manufacture, the device comprises a pressing plate, a tensioning screw, a tensioning nut, an arc-shaped pressing block, a threaded seat and a jacking bolt, the pressing plate is provided with the arc-shaped pressing block, the threaded seat and the jacking bolt, under the pretightening force of a product, the jacking bolt drives the arc-shaped pressing block to move downwards to press the annular lead, and the assembling clearance of the annular lead of the generator is measured by measuring the distance between the top surface of the arc-shaped pressing block and the top surface of the pressing block assembling groove, so that the felt is accurately configured, and the end structure of the generator is stably fixed during operation; and a shutdown accident of electrical grounding and huge economic loss caused by looseness are prevented. The dev