Air Tool Parts

Information About The Pneumatic Hammer

In terms of construction purposes, using a jackhammer is very efficient. A jackhammer, which is also called a pneumatic hammer, is a tool used for drilling purposes. A combination of a chisel and hammer, such a tool uses compressed air in order to increase the efficiency of the drill. The compressed air is created with the use of an electric motor connected to a power source. The traditional type of jackhammer is connected to a plug but there are now new versions which can be connected to a DC source like a battery. The large pneumatic hammer which is used in construction purposes is actually hydraulically powered. Such a device is used for breaking large stones, for demolition purposes and for renovating concrete or a pavement. Machinery embedded inside the machine has internal hammer which rapidly vibrates when turned on so that the hammer would be effective.

In order for a pneumatic hammer to work, a metal hammer is connected inside the machine and then a bit is used to back up or return the hammer to its original position.

The bit is connected to a spring which is operated through another machine. A full sized jackhammer is ineffective in terms of small scale renovation such as against walls and slopes. Usually, a smaller pneumatic hammer is used in such tasks. The large scale jackhammer is used in removing large rocks, cracking pavements and in metal works. In order to efficiently use a pneumatic hammer, an experienced construction worker or a two man team would need to operate the hammer either in his arms or on his shoulders. Both combined weight and size of the jackhammer would be able to push the bit to the surface.

Another method of using a pneumatic hammer is through the use of conditioned strength and endurance in order to hold the hammer.

Also known as the rivet buster, the hammer would be used in order to push a bit into a metal frame. The hammer would be placed over the head. Depending on the type of task, there are various ways to hold, control and grip a jackhammer.

Tony McGuigano is the owner of the Pneumatic Hammer website, as well as a website called Walkie Talkie Headset.

The Cyclone Drop Hammer from Stanley Hydraulic Tools was developed specifically for the demolition of concrete flat-work for easier removal in smaller and more manageable sizes. This permits reducing the size of the excavator required if pulling up the slab, better compaction for stockpiling and transportation, and simpler material sizing for crusher feed. Stanley. Make Something Great. WWW.STANLEY-HYDRAULIC-TOOLS.COM

Controlling Water Hammer In Hydraulics

At times hydraulic machineries pose the problem of high vibration in pumps, lines and tanks. This problem of constant vibration is termed as water hammer. The concept of water hammer is discussed in detail below:

Water Hammer: The Term

As the term itself suggests, water hammer refers to the banging sound of fluid through the pipe which is created due to the pressure wave, a by product of varying fluid velocity, within the pipe. When the banging effect heightens, it almost sounds as if the pipe is being hammered, thus, the term water hammer was coined to refer the problem. The common traits of this problem are high noise levels, broken pipes and vibrations.

Technical Cause of Water Hammering

Technically, when a moving column of hydraulic fluid hits a solid boundary, its velocity drops down to zero and the fluid column looses its strength to absorb the (kinetic) energy affiliated with its motion. Though as the fluid is incompressible, the deformation henceforth is smaller making the fluid accumulate energy like a spring. The level of pressure rise can be calculated as:

Pr = P + u p c

where “P” refers to initial pressure, “u” and “p” refer to initial fluid velocity and density while “c” represents the speed of sound within the fluid.

Solution

Certain damping devices like accumulators can be used to curb down the noise problem. However, as per the above equation, fluid velocity is the only variable which can be manipulated to address the main problem. The lower the fluid column velocity would be, the lower the subsequent pressure rise would be, hence resultantly, lower sound effect.

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