Buying a round or low gear concrete mixer
Buying guide for round or low gear concrete mixer
High quality concrete is made with a concrete mixer and the concrete mixer is in the basic circulation of its large boiler that can implement the final mixing plan of concrete.
In the world of theory, the story of making concrete is a simple story. In this story, we are going to mix a certain amount of cement, sand, water and some additives together in a certain amount. But is this story as simple in practice?
Experts know how challenging it is to mix heavy materials in concrete preconditions. An operation that will be performed only with the presence of the skill of the master and also a suitable concrete machine.
We are referring to suitable concrete. Maybe the question arises that not all concrete mixers are good for producing concrete?!
So what could be the reason for specifying the appropriate type of concrete mixer? The answer to this question lies in the amount of concrete that must be prepared.
Some operations are performed with a small volume of concrete and in others we need to produce a very high weight of concrete.
Therefore, suitable mixers must have the capabilities to work in our type of concreting operation. Apart from the capacity issue in concrete mixers, the type of power transmission designed for the machine is also important as one of the criteria in selling suitable concrete mixers.
Whether your concrete mixer is designed with the low gear transmission pattern or works in a round gear style will determine the basic framework in how it works and the type of concrete mixer used.This issue also affects the price of concrete. Next we want to examine what are the ideas in the power transmission plan in concrete mixer?What are the advantages and disadvantages?And finally, for what level of work are they suitable in construction operations?And in general, which pattern is sold more concrete?
What is the power transmission plan in a concrete mixer?
The most notable aspect of any concrete mixer is a very large rotating boiler that is to be filled with a certain capacity of concrete precursors.
Then, with the rotation of this boiler, our high-quality and uniform concrete will be prepared in a short time. But it is better to take a brief look at the concrete mixer boiler and think about how it rotates.
How and under what influence can this heavy boiler, full of materials, rotate with such force? The power transmission design in each concreting mixer is the answer to this question.
In these engineered ideas, methods have been proposed that can direct the power of the combustion engine to the other side. Of course, this guidance must be accompanied by maximum working efficiency at the lowest pressure on the engine. Three general ideas are used for this purpose. Sub-gear transmission design, round gear and compact rubber roller.
Compressed rubber rollers are a rare design for making very large molds.But in most construction workshops, we are going to work with all small or medium concrete mixers.
Therefore, examples of lower gear concrete or round gear concrete are very common.Now, if you are going to provide a concrete mixer, which model is better to buy?
What is the low gear concrete mixer?
In designing concrete mixers, we are going to run a boiler.This boiler is mounted on an axis and can be rotated by installing powerful bearings around the installed axis.
For a plan to transfer power from the engine and gearbox to the boiler, the simplest idea is to install a gear at the lowest point of the boiler. This gear is completely attached to the body at the end of the boiler.
Therefore, each time the gear is rotated, it will cause the boiler to rotate once.
To complete the concrete gear design, it is enough to design an axle that directs the power from the gearbox output shaft to this gear.A toothed shaft perpendicular to the gear shaft under the boiler is sufficient to complete the lower gear concrete.
Advantages of the low gear concrete construction plan
The low gear transfer scheme is very simple.In all that is needed to make this design, there are two small gears, one in the path of the gearbox shaft and the other at the end of the boiler.This idea is almost the simplest plan that can be proposed for the transfer of power.
Making concrete under gear is cheap.Simple design and use of small materials in construction make this model cheaper than concrete mixers. The low gear concrete mixer has a very simple repair and maintenance path and is not very expensive in case of damage.
Disadvantages of the low gear concrete construction plan
The biggest problem in the design of gearboxes is the ability of a small gear to transmit power.The small gear installed at the end of the concrete mixer boiler below gear does not have a high capability in providing lever power.Therefore, it cannot be used for circulating large boilers.
The gear failure rate installed under the boiler is high.The gear installed under the boiler has a small number of gears.As long as all the pressure from the engine to the boiler is applied to these gears.The continuous operation of this gear, which causes the gears to engage in succession, provides the ground for its rapid destruction.
The low gear concrete mixer is a good example for making small concrete mixers, but it is not capable of working in high volumes.Of course, even in small volumes, it has a good ability to create a uniform and low volume circulation.
What is a round gear or back gear concrete mixer?
The idea behind the waist gear concrete design is in fact the same as the lower gear concrete transfer design in which the gear diameters are significantly increased.
In mechanical practice, to achieve more power, you either have to use a more powerful engine or complete your system with a large-gear transmission.
The big problem in the power transmission design of the lower gear concrete is the poor gear installed at the end of the boiler. This gear is so small in diameter that it cannot provide enough power to rotate large boilers.
But if we are smart and can increase the diameter of the gear, we can rotate much larger boilers with the limited power of an electric or gasoline engine.
This is an idea that has been chosen in a fully engineered structure for the power transmission design of the lumbar gear concrete.In this idea, the gear, which is supposed to be the last ring of the power transmission, is so large that it will be mounted on the back of the boiler.
The boiler gearbox is installed next to the boiler and engages at one point with the gear installed on the back of the boiler.In this way, with the rotation of the gearbox shaft under the power of the engine, the large gear installed on the back of the boiler will also move, along which the boiler will start its rotation.
Advantages of round or back gear concrete transmission design
A very large gear equal to the diameter of the boiler body can perform a very efficient power conversion.Therefore, with the least power consumption by the gearbox and also the highest degree of work efficiency, it is able to turn the boiler around.
In this way, we can practically turn heavy boilers in the presence of low-power motors.This has a positive effect on reducing the price of concrete mixer.
Reduces current in starting electric motors. In the power transmission design of the low gear concrete mixer, due to the low power transmitted by the gear, a very high pressure is applied to the electric motor of the device at the moment of starting. This high pressure will manifest itself in the form of significant flow.
But in a belt-driven concrete transmission design, the starting torque is approximately equal to the rated current of the electric motor. As a result, no pressure is applied to the engine.
With the power transmission design of the waist gear concrete, we can provide a smoother and of course smoother movement for the boiler. This uniform motion is effective in better completing the concrete mixing design.
Disadvantages of the back gear concrete transmission plan
The cost of running the waist gear concrete is higher than the design of the low gear concrete mixer. Larger gears are reason enough to use more material to make concrete.
On the other hand, installing it on the body of the boiler requires a higher working hour when making concrete. All this prepares the concrete mixers to become more expensive.
Although the probability of failure in the lumbar gear concrete is less than the low gear concrete design; But if the gears are damaged or broken, they have more specialized and, of course, more expensive repair conditions.
In lumbar gear concrete, each of the gears mounted on the back of the boiler is much less involved than the type of gear below. But if these gears are damaged, their repair conditions will face great challenges.
In comparison, to buy between one of the two designs of lower gear concrete mixer and round or back gear concrete mixer, each of these two ideas can be considered suitable for making some concrete mixers with special efficiency.
In general, one of these two ideas cannot be considered as the superior method. The superiority of a design method makes the opposite design obsolete. But in practice we see the strong presence of both ideas in modern designs of concrete mixers.
Therefore, it can be said that from the point of view of concrete mixer manufacturers, both ideas are efficient in concrete power mixer transmission design and can have their own efficiency. But as a buyer, it is up to you to choose between the two power transmission plans.
In the first step, keep in mind that the power transmission design of the low gear concrete mixer is used to make small concrete mixers. Therefore, you will never find this power transmission design in large concrete mixers.
So if you are planning to buy a concrete mixer of 400 liters or more, you should definitely use the power transmission plan of the concrete gear belt around the back.
As a result, putting these points together, we should apparently consider making 250-liter concrete mixer the arena of competition between these two ideas.
In the meantime, which model is suitable in the design of 250 liter concrete mixer?
The power transmission design of the low gear concrete mixer is cheap, it has a simple structure; but in contrast to its cheapness, its gear failure rate is higher and its absolute power in rotating a boiler filled with materials is low. Therefore, there is no choice but to use 3 hp engines to make the lower gear concrete mixer.
Because less powerful motors do not have the ability to rotate the boiler. But the price of round or back gear concrete mixer, while being more expensive, has the ability to provide better power and generally provides a smoother motion of the boiler to achieve a suitable concrete mixing design.
These features are such that many technicians prefer to buy and sell waist gear concrete over the low gear models.