Background Of Concrete Pump
The concrete pump is a tool for conveying liquid concrete.
For more than half a century, concrete pumps have slowly replaced other methods of conveying liquid concrete. Many different concrete pump designs were developed in the first half of the 20th century, but in 1957 the two-cylinder hydraulic concrete pump was invented by Friedrich Wilhelm Schwing. This design principle is adopted by almost all other manufacturers and is still the standard design worldwide.
The working principle of the pump is that one piston draws liquid concrete from the hopper into the cylinder, while the other piston simultaneously pushes the concrete into the drain pipe. Valve, determine which cylinder is open to concrete hopper, which one is open to the discharge pipe switches over every time the piston reaches the end point and the process continues.
Concrete pumps are particularly important in the revolutionary construction of large high-rise buildings. In the past, people used cranes to hoist large buckets (or hoppers) filled with concrete to where needed. A crane can only lift one bucket at a time, and usually can hold about 2 cubic yards of concrete.
There are many advantages to pumping concrete over this bucket and crane system. The speed of pumping concrete is faster than the bucket lifting, which also means that a constant top and the concrete supply hose can be positioned wherever they need liquid concrete can be poured directly out of the hose needs instead of distributing two cubic yard mound of concrete over the desired area.
The advantages of concrete pumping than lifting it up in a skip by a crane:
The volume of concrete poured per hour is much larger. The crane can lift 12 cubic meters per hour.
Constant flow. Today's concrete pumps can pump concrete as fast as truck mixers. In many cases, it can even be as fast as a two truck mixer.
Reduce waste of working hours. People placing concrete need to wait for the next batch of jumps to be moving or being refilled at the bottom. The person at the bottom just waits for the skip to come back down, while it is moving or unloading at the top. The continuous flow of the concrete pump means less waiting around.
The crane can perform other tasks. The crane can transport steel products, scaffolding, formwork and all other necessary building materials to where needed, instead of hoisting concrete buckets up and down.
Place the concrete directly where you want it. The placement hose can be moved so that the concrete can be placed wherever needed.
Lower labor costs. Because concrete can be placed exactly where it is needed, only a small number of people are needed to distribute the concrete-unlike when a platform dumps the load and then someone needs to move the concrete to the place where it is needed.
Faster setup time.
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