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"BIRKAVAS" CONSTRUCTION FEATURES

Each thing has its own story of how it originated in this world. The stories of some are interesting, others maybe not very. Some of these stories live long, gradually intertwined with legends and various elements of non-existence, while others fade quickly, leaving room for functionality and practicality.

The

No exception and BIRKAVAS ...

The

Before the advent of this project, we thought for quite some time whether it was worthwhile or not to go to a well-formed market segment with its favorites and even its "gray cardinals". As always, the decision was made by chance. One of the projects simply required car scales. What a surprise we had when we didn’t find what we were looking for. No. It cannot be said that there are no scales. Their market is even too much. But we did not find there what met our expectations. This is how the BIRKAVO project was born. A little different ... than what you can find on today’s internet expanses.

ENGINEERING SOLUTIONS ALREADY IN THE DEVELOPMENT STAGE

Because we were developing a completely new product, we were not bound by any of these reservations and / or previous design solutions. So we started with a blank white sheet. The design work was performed in a 3D modeling environment. Admittedly, if we had done all this in metal, we would probably have to retrain in the scrap metal recycling business ...

The

There were a number of versions. From classics, from the simplest two-dimensional construction, to "total space", some elements of construction would have had to be made with titanium carbide 3D printers.

The

Sometimes we got so involved in the process that if someone had watched from the sidelines, they would probably have thought that we were not building a simple scales, but a Formula 1 car. This is what the debate about every reasonable or unreasonable kilogram in the construction looked like.

The

Perhaps even stranger would have seemed to the same observer from the country, when, having practically completed the overall design model, we returned to the beginning and deliberately aggravated some assemblies in order to increase the durability and reliability of the structures. Paradoxical? Yes. But we have our own principles ...

The

After all, what a good feeling of satisfaction it was when, after almost half a year of work, we got the model we were looking for. There is no ideal. But we found ourselves quite close ...

A beautiful engineering design solution, perfectly balanced, working where it is needed and without unnecessary elements, perfectly selected construction for the cross-section, the result of long and careful work. Everyone breathed more easily when the final BIRKAVAS 3D model was painted a soft "spring" green color when checking the finite element principle for strength calculations, confirming the assumptions that the whole structure is "working". There are no unloaded nodes. And the absence of red colors ignited BIRKAVA’s way to life.

What is it - based on the principles of a kind of genetic engineering, the new product of car scales - BIRKAVAS?

PRINCIPLE OF MODULAR DESIGN

And other structural elements

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Atitvaras

Išilginis elementas

Skersinis elementas

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As soon as you look at the construction, we can easily recognize the feature of the team of professional designers - modular construction.

The

Perhaps a slightly more complex principle in the production of unit products, but it pays off perfectly by expanding series products, improving production technology, substitutability and achieving consistent quality. The obvious solution is when the additional investment in the project development stage pays off in end-user options.

The

Incarnated in the BIRKAVAS series, it has evolved into a combination of two main structural elements:

- Transverse (basic) element, - for receiving all loads and their further transfer to the weighing sensor unit. for the attachment of the integrated weighing unit itself and the installation of all the infrastructure therein.

- A longitudinal load-bearing element for interconnecting the base elements and for taking over and transferring the main load between the supports to the base element.

The

At first glance, a nice and simple solution.

The

Unfortunately, I would not dare call it elementary.

The

Although the elements themselves are the same, they are no longer as simple as one might think at first glance. A closer look at the structure from the bottom reveals not so basic solutions. Longitudinal beams are connected to each other by spatial triangular connecting elements. I would like to point out at the outset that they, together with the top sheet of the structure, form trapezoids of an isosceles triangle connecting the longitudinal beams. Similar solutions are used in the manufacture of aircraft to obtain maximum structural strength using minimum mass. Why not take advantage of good solutions?

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No less interesting is the construction of the basic elements. The massive load-bearing profiles extending the side load-bearing beams of the longitudinal load-bearing elements are quite unexpected, and here we find constructions based on the analogy of triangular finite elements. Their outlines, which form the frame of the spatial load-bearing structure, are perfectly visible in the most responsible places. Logical. If such logic is seen in the longitudinal elements - less metal, more thought, it would be strange if we did not find them here.

In terms of design features, attention must also be paid to the integrated installation system. Perfectly planned, integrated in separate structural elements, after joint assembly joining into a single system of installation cavities, interconnected by separate metal pipes. Beautiful, aesthetic - functional. Clear synergies in structural design. When thinking about functionality in advance creates a great solution. In this way, we not only solve the whole issue of mechanical protection of the installed electronics, but also isolate it from additional electromagnetic and electrical discharges. And that's not so little, knowing the main weakness of all car scales - damage during thunderstorm seasons, when the whole installation simply burns from the discharges generated by electromagnetic fields. Integrating something like this into existing scales is unlikely. And here it is already integrated in the basic version, with design solutions. Such attention to detail and complex solutions is definitely commendable.

When it comes to attention to detail, you can't go through the next interesting solution - service availability. You can reach all the main elements through specially designed service points. You will not have to slip under the scales or, God forbid, disassemble the scales to service or clean the weighing cell assembly. Again, the simplicity and functionality are surprising. All hard-to-reach places have their own service covers. You loosen a few mounting screws and you can work great. And it doesn’t matter at all whether you just want to clean or you want to completely replace the weighing sensor.

               

If you already have to open service openings, be sure to pay attention to another detail, no less important. Externally, you probably won't even pay attention, but it's very important for her - all the coating elements (covers) are made of the wear-resistant steel of the Swedish concern SAAB. The bottom line is that it is not only abrasion resistant (which is also quite important), but also twice as strong as ordinary structural steels. Therefore, you will not have to deal with the problem when surfaces of a relatively small area "fall" into the service openings. Pleasantly "pat" the eye and the same combination of functionality and design. Because Swedish steel does not have a "corrugated" surface, the designers could not pass through such a blink of an eye. Therefore, these parts are "covered" with a special wear-resistant non-slip coating. At the same time, the construction was complemented by a rather striking design element that beautifully sets it apart from the environment. Another embodiment of attention to detail.

ANTI - CORROSION COATING

The next design solution is a hot zinc anti-corrosion coating. It is the link between engineering, design and functionality. Disputes and questions often arise as to which anti-corrosion coating is best and which is sufficient. If you look at it from the standards side, then we will find as many as five coverage classes. Starting with C1 and ending with C5, with various intermediate subclass variations. The bottom line is that when it comes to harmonic equipment, and because we can only attribute these product groups to them, experienced designers talk about only two classes of corrosion coating, C3 for indoor equipment and C5 for everything used outdoors. The whole intermediate classification is very conditional, with very many reservations and is only used when a trade-off between price and quality needs to be found. As we all know perfectly well, any compromise is not the right solution for either side. That is, we get a relatively very expensive price for a solution that does not meet our needs. The worst thing about such "compromises" is that it is too late to return to the original situation. That's how you have to use the eternal "compromise" when you try to repaint year after year, and it rusts anyway.

               

Unsurprisingly, BIRKAVAS does not accept any compromises. If we do, we do it for a long time. If we don’t, we don’t do it at all. This is exactly the logic seen in this product. Anti-corrosion coating is no exception. Without compromise. Hot-dip galvanized coating. One of the most expensive, but also one of the best industrial anti-corrosion coatings. Its main advantage is its independence from the human factor. Not only external surfaces are perfectly covered, but also all cavities from the inside, which is practically impossible to achieve with any other coatings. It is this coating that is most resistant to outdoor equipment. It is resistant to acid rain, not afraid of temperature drops, knee salts and so on. In a word, if you need a functional and "working" surface, you will not pass through this coating.

               

Is it possible to achieve such resistance in other ways? It is allowed. The only problem is that in order to achieve the guaranteed C5 class coating, you will have to perfectly process the initial surface, apply ALL technological coatings in three or four layers, as a result of which you will get a layer of at least 350 microns. And… you’ll be surprised to see that in terms of price, you not only didn’t save, you even… left. Not to mention the interior surfaces, which remained unpainted. Compromise? Vargu bau. Rather unsatisfactory solution. Hot-dip galvanizing as a democracy is not an ideal, but there is nothing better yet.

DOES DIGITAL WORSE THAN ANALOG?

 

In today’s digital world, such a question sounds absurd. Unfortunately, we still have to deal with such claims that analog weighing sensors are better in car scales. Really? Of course not. Clearly, with the total global digital format, there are people who still use vinyl record players today. I won’t argue, yes, they have their pluses and probably kind of reproduce the sound (claiming to be better, but I’d say otherwise). But today no one is arguing in principle - the digital.


The same is true with car scales. Quite expensive equipment. The analog format often meets existing needs. If it were to talk about whether or not to replace good analogue car scales with new ones just because the latter are digital - the solution is unambiguous - no. But if you want to buy new scales that you plan to operate for more than ten years, the solution is also unambiguous - only DIGITAL. BIRKAVAS is a new product. So it’s probably no surprise that even in the base version you’ll find just a reader. Why? Everything is very simple - this is the solution you need. Why then offer something else to deceive yourself and others? BIRKAVA has no questions about analog or digital. The question is - what number. And here it’s worth looking at more. After all, after offering so many interesting constructive solutions, the team could not simply pass here as well.

               

And we glanced in vain. The focus is again on basic solutions. Sensors manufactured in Europe. Surprisingly, despite the fact that good solutions can be found in the range of Eastern manufacturers, the uncompromising solution is Europe. Just as there are no products from several manufacturers. Logical. If you chose a good product, why others? And if you are not sure about your choice, why would you recommend it to your client? Simple as double two. Unfortunately, not everyone wants to acknowledge this truth. Sometimes, in harmony with others, it is easiest to justify the compromise already mentioned above. This is an unsatisfactory solution. Need these? Maybe ... But you won't find them in BIRKAVE.

               

If I put Swiss batteries in a Chinese watch, will it become Swiss? Of course not. The same went out with the digital BIRKAVO electronics. Digital sensors alone were not enough. Had to do as it should be. And again, the attention to detail has already been seen. It would seem completely insignificant nuances or strokes. For example, what protocols are used for data transmission. The usual data transmission standard was not enough for BIRKAVA. They again significantly raised the bar for RS 485 data transfer. Good, reliable, protection against extraneous noise and designed to transmit data over long distances. Probably the best of industry standards. System solutions that can increase reliability? Yes. Why not? After all, we work with measuring equipment. Let’s simply do the best we can. Errors and inaccuracies will do without us. It would seem such a simple truth of life. But, unfortunately, we don’t always follow it.

               

Returning to systemic solutions. It would seem a small change by changing the data transmission format from the weighing sensors gave birth to the whole sequence. Attention to detail, or detail to the system? But the fact remains that the whole electronic digital ruler is specifically tailored to this particular data transmission format. Obviously - BIRKAVAS does not compromise. Either we do or we don’t.

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ACCURACY YOU CAN TRUST

What if the pharmacist's scales are inaccurate? Probably nothing good. We pose the least risk to human health and the greatest risk to life. Maybe that’s why pharmacist scales to this day are as close as possible to precision ideals.

   

And what if car scales are inaccurate? Are we risking people's lives? Well, probably not anymore. But how can this affect your business? Probably nothing tragic, but it can do unpleasant things too. And the total loss can accumulate over time.

   

It will be even worse if your scales do not have a constant inaccuracy, but their readings are "flying". Everything is very simple, you can’t trust them. And then their presence completely loses its meaning. You bought an expensive interior item. There are hundreds of reasons why this can happen. One of them can be defeated elementarily, and even during the annual inspection, the others, unfortunately, may not be avoided.

   

One such "floating" element and I want to talk about. More specifically, there are not very responsible design solutions for the whole complex, which are often tried to ignore. Whatever the exact and good weight indicators (cell), analog or digital, is not very important. It remains merely an element of measurement. It is very important how and what we measure with it. And more importantly, where and how we will approve it, or base it if we speak engineering, why is that so important? Everything is very simple. If we take a close look at the shape of car latches, we will notice that their ends have a spherical shape. Meanwhile, the sensors themselves are in the shape of a longitudinal cylinder. In any case, they measure force (pressure) only in the exactly vertical direction. The greater the inclination from the vertical axis, the more the impressions "float". The technical specification of any manufacturer who manufactures and supplies a weight indicator shall also clearly indicate the limit values ​​for the inclination of the weight sensor. Not more than 4 degrees from the vertical axis.

   

Now a very important moment - how to structurally guarantee the positioning of the sensor so that it is always in a vertical position? All the more so as we cannot in any way limit the load and the movement that falls precisely vertically (direct effect on weighing). There are two ways: one is quite extraordinary and technically complex, the other - simple and not at all complicated - to present a pseudo-solution by simply screwing in two screws and without turning your head. "And so it will be ..."

    

Obviously, in the case of BIRKAVO, "And so will happen" is not appropriate. Either we do or we don’t do it at all. Since we had already undertaken to do so, we had to look for a technical solution to the situation.

   

The invention of the bicycle was completely lost. Quite often used similar solutions by German manufacturers. The sensors are mounted on special platforms that limit the linear displacements well and do not completely affect the vertical load of the weighing sensors. Unfortunately, these design solutions were developed mostly for weighing systems for mounting towers. The linear dimensions of such systems often do not exceed three meters. Can they be blindly taken and applied to car scales up to 18 or even 24 m in length?

   

It turned out not everything was simple. The designers had to sit down again for spatial modeling and digital simulation. Another interesting problem has emerged. Not only is the scale completely loaded with linear loads, but it is also quite sensitive to the physical expansion factor of the metal as it heats or cools. Talking to service professionals, it quickly became clear that theoretical calculations also have practical validation. It is quite common to find "lying" weight sensors. That is, by summing the mechanical displacements with the linear displacements from the temperature change, the sensors simply "lie". It’s bad when sensors simply break from such loads, but even worse when they don’t break, but start to show absolutely not the data you need.                

 

Now back to the slogan, BIRKAVAS slogan - "Precision for your business". I don’t think we can even talk about some precision without solving such a problem. Your scales turn into a metal platform, with an indicator showing a large number. Agree, a pretty expensive toy.

   

As always, the solution was born complex, combining a whole range of design solutions. All this was embodied in the general fastening / positioning system, which later acquired its working name 5D SETS (Five-degree limiting weighing element fastening system). This system differs from the classic positioning plates of weighing elements in that it comprehensively includes not one fixing plate, but a complex (common) fixing system, which allows the whole structure to freely and unrestrictedly compensate for linear thermal expansion of structures without affecting the operation of weighing sensors. In addition, the system has been expanded with integrated elements for additional protection against electromagnetic field discharges. This integrated system even got its working name IGIS 3 (three-degree integrated protection system against electric shock).

   

A beautiful synergistic solution that allows us to say today that the scales of BIRKAVAS product rulers weigh (and not just show numbers). A lot of it or a little? I think if you want to weigh, that should be one of the key factors in determining your choice.

   

That's how our short story came out. In conclusion, BIRKAVAS is not just a scale, it is a whole project that combines a unique philosophy of life and an approach to what and how we do in our production, business and life.

   

If you have been touched by anything written. If you are interested in products that are designed for more than one day. If you are not rich enough to buy cheap items, find us. We really have something to offer you and you will be happy with the things you can trust.

   

Well, and in the end I want to say goodbye to another slogan, which you can see in the business card of "Falcons of Fire":

   

We burn for you to prosper!