Motor

The invention discloses a motor. An integrated connection plate is in a polygonal shape, two assembly holes for installing motors are formed in parallel in a plane of the polygonal shape, the sizes ofa front connection plate and a rear connection plate are equal, the assembly holes are concentric, the assembly holes of the front connection plate and the rear connection plate are embedded into a machine seat body and are hermetically welded, a front end cover and a rear end cover of the motor are exposed out of the assembly holes and are sealed by a cover shell, a segment of structure in a boat shape is machined on an external circumferential rim of a flanging end cover, an oil injection hole is formed in a central plane of the boat shape, a groove is formed in a plane of the rim of the flanging end cover, a sealing strip is embedded into the groove, a matching plane of a protection cover and a plane of the sealing strip embedded onto the flanging end cover are fastened by a screw, theflanging end cover and a