Sliding trailer
The transportation industry has different types of vehicles that are used to meet different needs and requirements. One of these vehicles used is a sliding trailer used to carry long loads.
Sliding trailers are divided into three parts:
Front: This section is connected to the deadly trailer, and in fact the long-distance part is the main trailer.
Middle section: The middle section is the main platform of this trailer, in which the set of axes, wheels and suspension are located.
End section: The set of shields and lights is located on this section and the task of bearing the load for this section is not defined.
It is only the shield holder and the lights at the end of the machine that are adjusted to the desired position and in proportion to the length of the cargo.
In the original design of this type of trailer, telescopic beams are used to adjust the length, which allows the trailer to be matched several times with the length of the various. In fact, the size of the telescopic beam is custom, and they can be considered as different updates.
The sliding trailer made with Hollow structural sections (HSS) is also designed and built to carry long-lasting goods and is used in a variety of fields, including the road and building industry has it.
In common examples, the sliding section is applied only in the middle section. While in the innovation plan at the end, another sliding section was installed، It can also be used for more common goods, which is a great and important advantage.
The sliding section of common trailers is made with H-rays, which have a certain length (12 m )، But in the innovative trailer, HSS hollow steel quadruple sections are used, which dramatically optimizes its strength and performance، These sections are also produced at the desired length and in an integrated manner.
Obviously, each trailer needs a chassis. In this trailer, a main chassis is made, which usually has two or three axes, and can be designed and built based on demand with a variety of axles. Explain that the main part of the trailer platform, from HSS sections with special dimensions and thickness by the framing roll machine, continuously، With a weld seam, ERW’s resistance welding process is produced, which results in quality, very high manufacturing speed, and a significant reduction in cost.
In addition, regular trailers with fixed lengths have a very common platform that consists of several simple components. While the innovative trailer has a platform with multiple components, it is recognized by a series of resistant rolls، The ability to adjust the length is reversed, and to adjust the length in the middle part, by activating the brake at the end of the trailer and disconnecting the corresponding lock and moving the trigger forward, this is achieved. In other words, the main and middle sliding part of the trailer acts as the second or end part of the trailer is brake، The (Lock) lock is switched forward, and the first or front of the trailer, which is connected to the killer, moves forward, thus opening the sliding part. It should be noted that this section has a hole at approximate distances of one meter so that the desired area can be determined by pin. Both modules have a fixed frame sliding form to provide the desired length. This means that the free frame moves in a fixed frame to get the desired length.
At the end, the reason for the placement of moving members on steel rolls by releasing the lock by the person ( driver ), is easily removable and deployed in the desired position. In fact, the end slider of the trailer can be moved by hand by the operator.
Both the half and end modules are perfectly connected to the trailer.
The length of the main chassis in this innovative trailer, in closed mode, is 12 meters and 70 cm and in open mode ( both the middle and end sections ) 22 meters and 70 cm.
The middle sliding part in order to carry long loads in length of 6 meters with approximate distances of one meter and the end sliding part to carry long loads but in smaller dimensions in length 4 meters with approximate distances Made 50 cm.
If not loaded, the length of the sliding trailer will be shortened as the telescopic beams are assembled. This chassis length ( in closed mode – 12 m and 70 cm )، In order to comply with traffic restrictions, they are considered to be not exceeding the allowable ( standard ) when carrying normal cargo (.
The retaining bases or trailer stop pins are embedded to stabilize the trailer when it is detached from the killer and are designed to fit most trailers.
HSS sections used for telescopic beams in this design:
- Exterior sections of the middle sliding sections: hollow steel quadrilaterals 400*270*10
- Interior sections of the middle sliding sections: hollow steel quadrilaterals 370*240*10
- Exterior sections of sliding end sections: hollow steel quadrilaterals 400*270*10
- Internal sections of the end sliding parts: hollow steel square intersection 200*100*5
Trailer carrying special loads
The purpose of designing and building barber trailers:
Building, especially housing, has long been a major human need, which is why research is so important. Novini’s advances in this field have led architects and engineers to think of new ways to solve existing problems, as well as reduce the cost of. In line with this goal, one of the most important advances in the construction industry is the use of prefabricated structures, because today the trend of this progress is towards these structures.
Neka Steel Industrial Foundation is the first company in the country to design and build steel hollow construction lines since 2012، In the largest dimensions, it is worth noting that the design and construction of all sections of the line, with unique features, has been done by this company. This first step was to achieve the company’s main goal of designing, compiling and building prefabricated modular structures. Steel-concrete ( composite ).
In parallel with the first step, our second step towards the production of concrete sections has been (Precast Concrete), in which the research and development team of the company has been equipped with a concrete laboratory، Optimal ⁇ and the most quality methods used to build these sections.
Obviously, to set up a prefabricated concrete parts factory, heavy and advanced machines are needed, and this requires a high initial investment. To ensure sufficient profit, a large scale of pre-built construction projects must be available. In addition, the displacement of prefabricated parts must be done with the necessary care and caution. Prefabricated components are usually heavy and large, which is why cranes are commonly used, making it difficult to transport parts without damage. Also, the main problem in this type of construction is the separation of the production site and the location of the project, which can sometimes be significant.
Since one of the main lines of Neka Steel Machine Company in the design and manufacture of new products, safety, time and energy savings and cost، From production to transportation, they can see and realize these items, in addition to research, they also recognize innovation، To that end, Neka Steel Machine immediately designed and built a Flatliner trailer in parallel with the second step.
FLATLINER trailers are one of the least types of cargo in our country and are a safe and specialized tool for transporting prefabricated concrete and facade parts، It is very easy to use.
Although these parts are large and heavy, there is no need for cranes to load and unload them. In their new models, these trailers have jacks to raise and lower the entire floor of the trailer, which makes it easier to unload and load. It takes about 7 minutes to unload these trailers. It should be noted that loading and unloading, only by adjusting the height and multimeter movement to the front or rear of the trailer, can the pallets be loaded or unloaded. Equipped with separate axles and hydraulic and pneumatic suspension, the trailer will have a very soft motion for load safety. Meanwhile, due to the special design, this trailer has the ability to carry cargo up to four meters high.
The loading steps of the pallet are as follows:
- The trailer door opens
- The trailer is down
- The trailer moves backwards, so that the trailer chassis is placed under the pallet
- The pallet is inside the trailer
- Then the rear door of the trailer closes and locks
- The height of the trailer is high to the standard
- A number of holders of TAG1 holders hold side-by-side TAG1s on both sides of the wall
In real time, when the final product is ready, they can load it directly on the pallet. In this way, the prefabricated walls are placed on a special pallet with any length and height at the time of production in the factory. Transfer the pallet to the loading and unloading site ( Open space ) and in less than twenty minutes, the driver of the trailer will be able to load the pallet، As the height decreases, it is placed under the pallet and makes them tall together. It should be noted that this is possible without additional displacement, crane, the need to climb the trailer, and the help of manpower.
Technology-based innovations:
- Axes (axle) : In the usual trailers, each pair of wheels is placed on one axle and connected to the trailer chassis by spring or balloon ( So whenever each wheel is on one axle due to road roughness As the displacement progresses, the opposite wheel of its own axle also moves, which causes additional movements and displacement in the trailer to return ). In Flatliner trailers, the axles on each wheel operate separately and have a separate hydraulic or pneumatic suspension system that, despite the suspension function, also acts as a height adjustment mechanism.
Applying axial and radial loads (radial and axial) on the wheels of the Flatliner trailer creates a relatively large bending effect on the wheel axle. Therefore, designing, calculating, and building separate axes is far more complex than conventional methods.
Stracker: In the usual trailers, the Strakers are integrated along the length, and the axis of each pair of wheels is also integrated and connected to the Strackcher in a very easy way, if in the trailer, the Flatliner Strackcher During the trailer, two completely separate sections are formed on the left and right ( due to the ability to load and unload goods without the need for a ) crane and at the end by a door with the ability to withstand forces The two do not connect the two parts.
Mechanical lock: To further ensure this lock using a relatively large bead and trapezoidal gear by the operator، The booster axis stabilizes the brakes in the lock position so that the door remains stable in place if the booster weakness ( Booster wind discharge ).
Height adjustment panel: On the side of the trailer and at the nearest distance to the cabin killer, the hydraulic unit and control panel are located. When adjusting the height of the operator with proper access, first with the start of the unit and then using the hydraulic lever valves, the height adjustment process is performed.This height adjustment applies to two separate parts:
On the axis of the wheels
Trailer connection to the killer (rich )Power supply for hydraulic jacks ( for height adjustment), which includes hydraulic oil tank, pump and hydraulic motor, valves and related circuit with four (ACRUMOLATOR hydraulic capacitor ).
This mechanism is used during loading and unloading, so when loading the height in order to be placed under the pallet, it is first reduced and increased to lift it, and when unloading in order to lower it Pallet placement is first reduced and increased to normal after discharge
Height reduction limiting system: This system is designed to increase safety, so that after loading or moving،The height reduction system is completely locked and under no circumstances will the load height or pallet be reduced below normal. This system is disabled during loading and unloading until it is possible to adjust the appropriate height and is only activated when the car is moving
Obviously, the trailer needs a lighting and warning system that is also embedded in the trailer in accordance with the traffic standards.
General technical specifications and trailer index:
- Ability to load and unload goods without the need for a crane
- Ability to carry cargo up to four meters
- Ability to adjust the height to 50 cm
- 9 m long load capability as standard ( custom length )
- Cargo capacity up to 24 tons as standard.
- Hydraulic or pneumatic height suspension and adjustment
- Due to the limited performance of the wheel axle, the trailer moves very softly and without additional shocks
- Due to the separate axial mechanism and the openness of the middle part of the trailer, it is possible to establish the load, close to the ground، Therefore, the center of mass of the total load and trailer is closer to the level of reliance, and this makes it much more stable than other trailers.
- Maximum load protection during transport
- Reduce waiting time for the driver when loading or
Advantages of using this transport tool:
- Pallet discharge is done in just 7 minutes.
- It costs little maintenance.
- Complete safety for the driver
- Maximum load protection during transport
- Suitable for short or long distances
- Suitable for storing panels in pallets in the ( site )
- Increase interest on transportation
- No need to escort large loads
- Stability and safety of large and fragile goods
- No need for cranes and manpower ( other than driver )
- Ability to return at least 4 empty pallets
- Loading height only 50 cm and variety during loading ( Talkhah )
- Reduce waiting time for the driver when loading
- Increase loading and unloading in one day
- Possibility to carry panels up to 4 meters high
- Very low floor advantage
- Long life durability