DESIGN OF HYDRAULIC DOOR OPENER

Abstract

hydraulic door opener is an equipment used to open latched or locked door internally or externally by using hydraulic energy we can overcome many drawbacks earlier used rescue tools. It is possible to generate large force to open metallic or wooden door. It can be used by military, fire fighter ,police .The reaction force exerted by hydraulic fluid is utilize to break door/latch. In the operation when cylinder piston is at retracted position. The sharp edges of movable jaw &  base part are aligned. The sharp edges of movable jaw & base part both are inserted in to gap between door & frame/latched. The hydraulic pump is used to pressurized the fluid. As the hand pump is pumped, the fluid is pressurized which causes to extract the cylinder piston which is connected to movable jaw by means of piston rod. The hydraulic pressure is transmitted to movable jaw. As the movable jaw pushes the door, the reaction force acting on base part which causes the cylinder to move back & hence the gap between either door & latched or door & frame continuously increases. At the same time the operator has to push jaw in to the gap. When pressure applied reaches to maximum strength of the latch/door, it will fail at the weakest section. Thus door can be opened.