Painting of trawls, semi-trailers, special equipment in Ukraine
After the cleaning and surface preparation procedures, it is necessary to paint. The painting procedure is not particularly difficult if you need, for example, to clean a small chip or re-paint the places with scratches and dents that appeared during operation.
If there is a need to paint the entire structure, special equipment and special conditions cannot be dispensed with. In a conventional garage, it is quite difficult to paint a trailer, semi-trailer or trawl over the entire surface after shot blasting.
To do this, you need to use the services of Trans-Auto-D professionals who have all the necessary skills and experience in this field. The painting process is quite complicated technologically, and special care and attention are required for maximum protection against corrosion processes.
In the company Trans-Auto-D, you can order the processing and painting of the most dimensional and complex structures. Semi-trailers and trailers, trawls and frames – for the masters of their craft there are no unsolvable tasks. Using high-quality consumables and modern painting equipment of well-known brands, you can guarantee a positive result in terms of high-quality and reliable protection of surfaces from any external influences.
Any surface must be pre-treated with sandblasting or shot blasting. After this procedure, rust, dirt, old coating layers up to the “bare” metal are removed from the surface.
An anticorrosive coating is applied to the pure metal, then stages such as:
After staining, structures can be additionally treated with special tinting compounds.
Specialists of the company Trans-Auto-D carry out cleaning and painting procedures of any complexity, working with equipment of any modifications, varieties and dimensions. Experts select only the most effective consumables for a guaranteed quality result.
Processing, cleaning and painting is carried out in the shortest possible time. The cost of the services provided is determined by the volume and complexity of the work, the current state of the design, the need to use additional techniques for high-quality cleaning.
The main components that must adequately ensure reliability during operation, the required load capacity, ease of management of a variety of cargo trawls, trailers and semi-trailers are a high-quality frame base and an efficient suspension and axle system.
At the same time, the suspension system itself includes not only axles, but also spring elements, steering arms and other elements that very often fail in our difficult operating conditions.
All existing types of auto-suspensions are conventionally divided into two large categories:
Speaking of a dependent type, it is understood that the wheels of each continuous separate axis are fixed in a rigid bundle. In this case, the torque is transmitted from the engine through the bridge to all wheels simultaneously. The main disadvantage of such a system is the reaction to the problems (pits, bumps) of the road surface of two wheels at once, and not one.
A car with this type of suspension is quite difficult to drive, it requires an excellent response from the driver to the slightest changes in the movement of vehicles on bumps. Roughnesses in the road should compensate for dampers or springs in such situations. In this case, depending on the type of suspension can be used:
Any dependent suspension is characterized by poor sprungness of the entire body, strong shaking on road bumps, drifts during bends, and difficult handling of the car.
These suspension options are more variable in their execution. The drive for individual wheels is the semi-axis, which interacts with the chassis using a rather complex system of levers of longitudinal and transverse types. Suspension independence is expressed in the fact that each wheel reacts to road irregularities (bumps, pits) individually, while the general kinematics of the movement process is simpler and more predictable.
Over the decades, hundreds of variations of independent-type pendants have been invented, tested and released.
It does not make sense to list them all, because only a few options are most often used in modern automotive industry:
For a long time, the main type of suspension for this type of vehicle was the dependent suspension on springs. Over time, the tasks facing the carriers became more complicated, the dimensions and weight of the cargo increased. This required the search for new, more efficient and reliable systems in management. Today, dependent suspension on springs in trawls, if it is found, is quite rare.
The main types of suspension in our time are:
As practice shows, the most common steel suspension using pneumatics. Off-road high-frame semitrailers are most often equipped with spring-balancer suspension. Special reinforced pneumatic suspension systems can also be used here.
One of the expected innovations is the hydraulic suspension type, which are equipped with semi-trailers of all lines. The hydraulic system is controlled by “smart electronics”, which minimizes the impact on the parameters of movement of the road terrain.
She constantly monitors all the features of the coating, if necessary, increasing the angles of rotation of the axes and varying the clearance (ground clearance). With such a system, it is simple enough to go through even the coolest turns.
One of the important points when testing the strength of the frame and axles is the loading of a heavy load – self-propelled equipment. Here, the critical point is tensile loads of tens of tons of the rear trawl truck, which experiences maximum impact.
It is for this reason that the trawls for transporting self-propelled equipment are additionally reinforced in the rear. In addition, appropriate ladders for arrival are selected, which may differ in carrying capacity, material, type of execution.
Existing norms and standards for heavy equipment, multi-axle trucks, semi-trailers, trailers include strict requirements for maximum axle loads. The design of modern semi-trailers includes special gauge sensors that allow you to avoid quite substantial fines for exceeding the permissible loads on the roadway.
If the semi-trailer carries about 60-70 tons of cargo, then each pair of wheels should withstand about 10 tons.
It is important to understand that at the time of arrival of heavy self-propelled equipment onto a trawl, the load on individual axles increases to 20-30 tons.
Transportation of goods is often carried out in difficult road conditions, so problems such as axle ruptures, cracks in the steel base, broken threaded joints, deformation of structural elements are not uncommon.
The axis may lose its ideal geometry, which may result in:
For maintenance and repair today the most modern methods are used. Specialists must perform a visual inspection of the structure for visible damage and malfunctions, and then perform a complete diagnosis and testing at special stands.
Wheel pairs are completely disassembled and reassembled with the replacement of worn or damaged elements, electric welding is performed, and turning works are performed.
It is necessary to take into account the place of the defect and the nature of the damage, after which such overhaul procedures for the axles are performed, such as:
All welding works are carried out with subsequent quality control of the seam using an ultrasonic flaw detector. The final alignment of the axes is made on special stands for adjustment and testing.
Please note that when overhauling axles, it is often necessary to perform maintenance on the components and mechanisms closest to them: brake drums, steering levers, shock absorbers, and so on may require replacement and repair.
The service center of the TAD company carries out scheduled maintenance and overhaul of the axles of semi-trailers, trailers and trailers of all well-known manufacturers. We work with such brands as SAF-HOLLAND and BPW (Germany), SMB and GIGANT (France, Germany), ROR (USA).
When ordering a major overhaul in our company, you can count on such bonuses as:
We save your time and money by offering services of European quality at the most affordable prices.
