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Inside the Jackhammer

The pneumatic drill is the quintessential power tool. It is large, loud, and most importantly, powerful. It makes quick work out of any digging surface; able to break ground with an efficiency equivalent to 150 men with pickaxes. What most people are not aware of is that, just like the pickaxe, the jackhammer works by using only two things. One of which cannot be touched.

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Inside the Jackhammer

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  1. Inside the Jackhammer Classic Hire 421 Carrington Street Hamilton Hill WA 6163 (08) 9336 2500

  2. The pneumatic drill is the quintessential power tool. It is large, loud, and most importantly, powerful. It makes quick work out of any digging surface; able to break ground with an efficiency equivalent to 150 men with pickaxes. What most people are not aware of is that, just like the pickaxe, the jackhammer works by using only two things. One of which cannot be touched. Air Force Jackhammers are not fuel or electrically-powered, at least not directly. Despite its highly industrial silhouette, the jackhammer is merely an assembly of metal with a hollow space at its heart. The drill bit can move up and down more than a thousand times per minute, all through the power of pneumatics. Pneumatic technology pertains to the use of pressurised air to increase efficiency. Its applications are present in many everyday objects. Vacuum cleaners and vehicle tires are notable examples. Wheels need air between them and the road, in order to optimise grip, speed and safety. Pneumatic technology in vehicles cancels the friction and drag caused by contact with a surface. As a car is pulled downwards, pressurised air in the tires creates a roughly equal force pushing upwards.

  3. Air is the only source of a jackhammer’s function. All of its moving parts are air- powered. A hose that is connected to the unit pumps pressurised gas from an air compressor. It is extremely rapid and constant, allowing unhindered drill cycles. Cross-section Inside the jackhammer, the air goes through a network of tunnels that looks like two squares linked up to their halfway points. An inlet for the air compressor hose is connected to one square, while an outlet for used air is connected to the other. A piston is located where the two squares converge. This is what makes the drill bit move. The piston moves up and down due to the changing direction of the pressurised air. This is achieved by a valve that switches position in quick intervals. Air enters the jackhammer and pushes the piston up, the valve then causes the air to go back and loop towards the previously- blocked outlet, causing the piston to smash down. This is how one strike of the jackhammer is performed. Jackhammers are intimidating, but simple in design. Few people can and will operate these tools in their lifetime, but with the power they possess, that may be for the better.

  4. RESOURCES: http://www.classichire.net.au/equipment/bobcat-hire/ http://www.explainthatstuff.com/jackhammer.html

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