This dual-power door knocker for Laizhou Silver Star Machinery and Equipment Co. , Ltd. independent research and development products, human and ammunition as the power source, with large impact force, reaction force is small, high efficiency, strong security, easy to operate single-person advantages, easy to use and carry, suitable for emergency rescue, fire, disaster relief and other occasions, for emergency rescue to save manpower and time.
How it works:
1, manpower: both hands to hold the door knocker, force the door, to achieve the human door
2, gunpowder: S3 empty bag shot to induce gunpowder combustion of the air flow, push the piston, piston-connected impact head to the door to the impact force, to achieve the purpose of opening the door.
Features: do not pull the trigger, hit the door automatically, reduce the reaction force, to achieve human, gunpowder dual power.
Technical parameters:
1, the use of bullets: S3
2, the way to load: manual
3, piston stroke: 70mm
4, the total length of the door knocker: 650mm
5, net weight: 16.8 kg