Portable manual multipurpose drilling device

The utility model relates to a portable manual multipurpose drilling device which comprises a double-end screw rod, a drill bit clamping component connected with the lower handle part of the double-end screw rod and a drill bit, and is characterized in that the middle part of a spiral flying block is fixedly connected with the lower handle part of the double-end screw rod, and the spiral flying block is positioned above the drill bit clamping component; a bearing supporting seat is tightly matched with the lower handle part of the double-end screw rod; a bearing spring seat is arranged in thelower opening part of one sleeve, and symmetrical connecting blocks are arranged at the upper ends of the two sides of the sleeve respectively; symmetrical sliding grooves are formed in the other twosides of the sleeve; a spiral spring is arranged between the sleeve and the double-end spiral rod, and the lower end of the spiral spring abuts against the bearing lower spring seat; a manual component is matched with the doub