Connecting device

A fire hose connecting device comprising

• a connecting unit 100 that includes a connecting unit body 110 whose inner center is hollowed and having a screw thread provided on an inner circumferential surface thereof, a plurality of connecting unit knobs 120 protruding outward at radial positions of an outer circumferential surface of the connecting unit body 110, a protrusion unit 130 protruding forward from a front surface of the connecting unit body 110, and a rotor 140 inserted into the protrusion unit 130 and rotating to open and close an inside of the protrusion unit 130;
• an opening/closing unit 200 that is coupled to the protrusion unit 130 and rotated in forward and reverse directions with respect to the protrusion unit 130 to open and close the inside of the protrusion unit 130;
• and
• a cap 300 that is screwed to one side of the connecting unit body 110 of the connecting unit 100 to fix the opening/closing unit 200 to the connecting unit body 110,
• wherein
• the connecting unit 100 further includes a rotor rotating unit 150 provided on an upper portion of the protrusion unit 130 to rotate the rotor 140, so that the rotor 140 is rotated to open and close a fire hose while the rotor rotating unit 150 is rotated by a rotation of the opening/closing unit 200, and
• the rotor rotating unit 150 includes
• a rotating unit body 151 having a gear 151 a provided on an outer circumferential surface thereof,
• a gear shaft 152 protruding from a lower portion of the rotating unit body 151 and passing through the upper portion of the protrusion unit 130 so that the gear shaft 152 is coupled at an end thereof to the rotor 140,
• a wear-resistant cap 153 provided at an upper portion of the rotating unit body 151, and
• a plurality of rotating unit oil rings 154 provided on an outer circumferential surface of the gear shaft 152.