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Impulse of the city

Which hydraulic breaker is the best?

People’s opinion on the goods is based on correlation of different factors, such as: technical data, operating experience etc. But sometimes customer’s opinion can be deceived by fictional advantages of the goods, created by a talented article writers, which may become a determine factor when he is to make a choice.

During the last 10 years hot arguments have been flaring up here and there about advantages and disadvantages of different types of hydraulic hammers. So many duplicates of well-known hydraulic hammer brands have been broken to impact on the customers’ opinion, and we have to admit that those facts and reasons have always been true and fair. Just remember hot discussions upon the hammer body, which type is better open or enclosed type. Remember accusations of some manufacturers about using bad quality materials, or about the lack of good production facilities to create such a high-technology product as a hydraulic hammer. Many men, many minds...

There are people insisting on the fact that diaphragm hammer is the ultimate solution, others ground that piston hammers are much better. But only those who are constantly operating these products can say what type of hammer meets their needs in full.

So many articles and stories have been dedicated to the rules and instructions how to choose a hydraulic hammer for this or that carrier type. Apart from such essential criteria as oil flow and maximum oil pressure, a customer has a right to choose the hydraulic hammer’s impact energy rage, and this characteristic is a very important fact as well. If first two parameters of the hydraulic hammer don’t comply with the carrier, the hammer either won’t work with maximum performance or won’t start at all. But, generally speaking, these three above mentioned facts are enough to make a right choice. These rules are applicable for most carrier models existing in the market, but each rule has exceptions.

And one of such an exception is — the choice of hydraulic hammer for back hoe loader (BHL). No matter how many good features and characteristics your hammer has, no matter how good it complies with the parameters of the carrier, but if you can’t fold the excavator boom and stick down into transit position, operator is doomed to transport the hydraulic hammer in the front bucket. Or, like an option, he will have to drive the BHL very slowly and carefully, avoiding traffic control posts as the total width of the BHL in this case will increase the width clearance limits existing in Russia. Unfortunately, we may often see operators ignoring safety rules and driving BHLs with attachment which is still in operating position. «And what’s wrong about it?» — you may ask, if you’ve never seen a BHL rolling over on its back wheels because of the center-of-gravity shift. The question arises: why does it happen? Why most of the hydraulic hammers cause so many troubles even when they completely comply with the hydraulic requirements of the carrier?

The answer is simple — it is hammer’s body form and type, which makes it just impossible to fold down excavator attachment into transit position.

The distance between the excavator boom and its stick, or, to be more precise this space between them, when it is folded in transport position, forms a triangle, one side of which is a boom, another one is a stick and the triangle base is Quick Coupler (QC).

In some BHL models now the manufacturers use gooseneck boom which helps to increase this space. But the dimensions of most hydraulic hammers with enclosed bodies greatly exceed this space, and don’t let the excavator boom and stick be folded down into transit position. And even if the manufacturers of the hammers’ adaptor plates succeed to fit the hammer in this triangle, the hydraulic hammer’s body or working tool thrust against the boom or comes maximum close to the stick.

As it is well known, Russian roads are far from being perfect, they are not perfectly flat, and very often the BHL operators don’t fold the boom and stick into transit position very carefully. As a result, either because of the carrier’s swaying during driving or because of constant bumping in the process of folding the attachment into transit position, excavator boom and stick can be damaged, which may result in grand breaking and expensive repair. To solve this problem the manufacturers of the hydraulic hammers with enclosed bodies advise to take the working tool off during transportation, or use short-cut tool and don’t close the extendable stick into the fully-closed position, and so on and so forth...

There’s one more piece of advice — to disconnect the hydraulic hoses and the hammer, if there are no inlet and outlet ports on the sideways of the hammer, to avoid their damages which may happen due to their fray and pinch between excavator boom and hammer. All the above mentioned facts make lots of troubles and increase the time required for moving from one job-site to another, and as a result, slow down the entire job process.

Are there any solutions to these problem and what type of hydraulic hammer fits BHL best, taking into consideration all the above-described.

Yes, doubtless, there is an optimal solution to the problem, which has been successfully embodying in Impulse hammers manufacturing. First and foremost, these hammers have open-type body, which definitely decrease total hammers length. Secondly, Impulse hammers have curved form of body sides, so-called ‘banana’ type. And the third fact, which gives an opportunity to install Impulse hammer to any BHL model — is optimized, accurately measured angle of connection between the hammer and its adaptor plate.

And now in details about each fact.

Hydraulic hammers with open-type body have less length than the hydraulic hammers with enclosed bodies, due to the upper buffer, which is pushed by the adaptor plate. The space in the adaptor plate which is required for excavator boom movement should be added to the total hydraulic hammer length as well. Due to this fact, the closest pin to the hammer is moved aside on the buffer’s width space, on the width of adaptor plate and on the space, required for the excavator boom movement. And this complicated construction will hardly ever fit the triangle BOOM-STICK-QC.

Curved form of the Impulse hammer’s body sides excludes the contact of the hammer and boom, moving the hammer’s body aside. The space required for the boom movement will be left aside, which simplifies hammer’s positioning. We’ve already got the space economy due to the hydraulic hammer type and form. And there is one more element with the help of which we may win additional space — adaptor plate.

Well-known carrier’s manufacturers are producing attachments for their machines, but they manufacturing adaptor plates which make the excavator boom and stick to fold into transit position with the attachment on (to fold it into the above mentioned triangle BOOM-STICK-QC). But we should remember that this is customization of one particular hydraulic hammer model to a particular BHL model, for example JCB hammer can be used with JCB BHLs only and there is no way to fit it to any other BHL model, such as TEREX for example. And even if you’ll succeed in increasing or decreasing the diameter of the adapter plate pins, the configuration of the pin holes will never let the hammer be folded down completely into transit position, or the angle will be critical.

We, as manufacturers, embody the initial generality and adaptability of the Impulse hammers to all the variety of carriers existing in the market. It becomes possible due to the changeable adaptor plates. Having one typical hydraulic hammer we are able to adapt it to any carrier model by changing its adaptor plate only.

Summarizing all the above said, you can see that the most convenient for service and operation hydraulic hammer conception is embodied in Impulse hammers design of curved body sides (‘banana’ type) and changeable adaptor plates.

I’d also like to remind you that this special design of Impulse hammer is relevant for using it as an attachment for BHL.

Full range of Impulse hammers includes traditional hammer type with straight body sides, which is best for Skid steer loaders and mini-excavators. In other words, no matter what carrier type you have, you will definitely find the hammer in Impulse product range which will become the ultimate solution. Because Impulse means — quality made!

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