Pneumatic head screwing device for glue seismic explosive column

The invention relates to the technical field of cap screwing devices, in particular to a glue seismic explosive column pneumatic head screwing device which comprises a pneumatic wrench, a cap screwing cover and an ejection assembly, the cap screwing cover is provided with a clamping groove, and the ejection assembly comprises a mounting seat, an ejection spring, a locking rod, an ejection plate and a locking component. When a gland is tightened, the cap tightening cover is aligned with the gland and sleeves the gland, the pneumatic wrench is started to drive the cap tightening cover to rotate so as to tighten the gland, when the gland is taken down, the ejection plate compresses the ejection spring, the locking rod is locked through the locking component, and then the operation is repeated. And the output end of the pneumatic wrench is rotated reversely to drive the cap screwing cover to rotate reversely to take down the gland, at the moment, a worker relieves locking of the locking rod by the locking compone