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January 8, 2021
Detachable Gooseneck trailer and Bumper pull trailer
When choosing a trailer, among all the choices you will make, there is no greater impact on bumpers than bumper trailers and gooseneck trailers. Each option has its own advantages, but the difference between gooseneck and bumper hook is sometimes not obvious. How do you decide which hook to choose?
Throughout the course of this article, you will understand the difference between gooseneck hooks and bumper pull hooks, and the advantages and disadvantages of each type. At the end, you will have enough information to find out which type of hook is right for you and your tractor.
Detachable Gooseneck Trailer and Bumper Pull Trailer
The most common type of hitch is bumper pull, also known as a drag or tagaron trailer. The name is a bit misleading because the detachable gooseneck trailer is not actually connected to the detachable gooseneck trailer's bumper. Instead, the tongue of the trailer fits over a spherical hook that protrudes from the frame at the rear of the vehicle.
Bumper pull trailers have many advantages. Most of these advantages are because the bumper pulls less than the gooseneck. This means that the cost of towing a trailer with a bumper is usually lower than that of a gooseneck. This also means that you may not have to buy a pickup trailer to tow the bumper. Depending on the detachable gooseneck trailer, an RV, SUV or CUV may be suitable for towing one.
Another advantage is that the total weight of the bumper towing trailer and vehicle is unlikely to exceed 10,001 pounds. Usually this is the weight that declares the trailer to be a commercial vehicle and requires special permission to transport it, but if your state limit is lower, you need to check with the state's automobile department.
For those who use the trailer for the first time, the bumper hook is also very beneficial. This is a more common way of hanging than a gooseneck, so it's less daunting. In addition, compared with gooseneck hooks, first-time trailer owners are more likely to install bumper hooks on their SUVs or pickup trailers. People who use a trailer for the first time will also realize that bumper-pull trailers have a normal turning radius, so the trailer will follow the tractor when turning.
However, bumper trailers do have some disadvantages. A smaller trailer means that there is less space in the living area or locker room in the trailer, and if you drag horses or livestock, this also limits the number of animals you can transport. For example, if you want to haul more than two horses, you may need a detachable gooseneck trailer.
In fact, you need to be extra careful when transporting overall heavier cargo. You need to make sure that your trailer has the correct weight rating. If this is not the case, you may encounter some problems during the journey, such as lack of stability and loss of control, including trailer shaking.
These are not issues that most novice trailer owners consider. As more and more novice trailers have bumper pull, it is not surprising that bumper pull trailers are involved in more trailer accidents.
On the other hand, detachable gooseneck trailers are usually owned by senior trailer owners. The gooseneck is easily confused with the fifth wheel trailer because the two hook types are very similar. The difference is that the detachable gooseneck trailer slides on the spherical hook of the pickup trailer bed, while the fifth-wheel trailer is fixed to the pickup trailer using an articulated plate hook. Semi trailers use the same type of hooks.
The biggest advantage of the gooseneck trailer over the bumper rod is its stability. Since the tongue weight of the trailer is above the rear axle of the trailer and not at the rear of the frame, the possibility of the trailer swinging has been minimized. This increased stability also means that detachable gooseneck trailers can withstand more weight and are larger than bumper trailers. If needed, the gooseneck has more living space and can also accommodate any hauled goods.
The turning radius of the detachable gooseneck trailer is also smaller. In this way, you can cut corners more tightly than bumper trailers, and you can maneuver the trailer in a narrow space. However, this narrow turning radius can be a double-edged sword. It takes some trying to learn, if you mess up, you can take off the mudguard of the trailer, let alone damage the road signs and other vehicles on the street.
However, detachable gooseneck trailers have their limitations. One is its size. You will not be able to carry anything except pickup trailers, and unlike bumper trailers, a few goosenecks weigh enough to be classified as a commercial trailer. Detachable gooseneck trailers also require a special mooring system installed on the pickup trailer bed.
Detachable gooseneck trailers are not as common as bumper trailers. This means that most pickup trailers are not equipped with gooseneck trailer balls on the trailer chassis. You need a mechanic (and some extra money) to do this.
Another problem with removable gooseneck trailers is the storage of the trailer itself. Since gooseneck trailers are usually larger than bumper trailers, store a portable
Detachable gooseneck trailers are also very extensive, suitable for the transportation of various mechanical equipment, large objects, road construction equipment, large tanks, power station equipment and various steel materials. The series semi-trailers have flat, concave beam and tire exposed structures.
The longitudinal beams are straight or goosenecked. The frame is stepped and the longitudinal beam section is I-shaped. It has the characteristics of high rigidity and high strength. The main plane of the frame and cargo platform is low, which ensures the stability of transportation, and is suitable for carrying all kinds of large-scale construction machinery and steel materials. It adopts a three-axis balanced live rigid suspension, with a mass balance block installed between the front and rear leaf springs, which can make the deflection of the front and rear leaf springs change by the same amount, and use the rear axle to balance the force.
It is versatile, efficient and fast. The whole vehicle adopts advanced computer-aided design software, and the optimized design is flexible and diverse. The load-bearing surface of the frame is designed according to user requirements to meet the transportation of various special goods.
An eccentric device is added between the gooseneck and the cargo platform to achieve a rigid connection. Through structural analysis, the rationality of the eccentric device is proved. On this basis, a finite element model of the gooseneck structure is established, and ANSYS software is used to calculate the stress distribution of the gooseneck structure under the maximum load, which provides a theoretical reference for the design of the gooseneck.
The structure of the gooseneck
The gooseneck part is composed of a traction pin, a lifting hydraulic cylinder, a pin shaft connected with the cargo platform, an eccentric block for fixing the position of the gooseneck, and a gooseneck. The gooseneck part is connected to the cargo platform by articulation, and a pair of lifting hydraulic cylinders are installed between the gooseneck and the cargo platform, which are driven by the hydraulic cylinder to realize the raising and lowering of the cargo platform.
After the cargo platform is raised or lowered, the position of the gooseneck and the cargo platform is fixed by an eccentric device. The eccentric device is welded by 16Mn steel plate and steel pipe, installed in the hollow of the gooseneck web, and connected with the gooseneck through a pin. The eccentric device has two plane positions. Through these two plane positions, it is in contact with the upper surface of the cargo platform, that is, the cargo platform is in contact with the ground: when the cargo platform rises, under the action of gravity, the right plane turns to the bottom, and it can be unloaded at this time The oil pressure and the load are completely carried by the eccentric device. This position corresponds to the highest position of the cargo platform, that is, the position during transportation.
Mechanical sub-trailer of the gooseneck part during transportation, the force of the gooseneck is more complicated. In combination, there are the support reaction force at the traction pin, the support reaction force of the eccentric device, and the support reaction at the hinge joint between the gooseneck and the cargo platform. The force, the gravity of the gooseneck, the friction at each contact. Since the gravity of the gooseneck has a small value compared with other forces, the influence of gravity is ignored: at the same time, the influence of friction at each contact is ignored.
Only the influence of the support reaction force at the traction pin, the support reaction force of the eccentric device, and the support reaction force at the hinge joint between the gooseneck and the cargo platform are considered. Among them, the direction of the supporting reaction force of the eccentric device to the gooseneck is perpendicular to the cargo platform.
The three-force balance converging principle and considering the balance of the whole vehicle can calculate the supporting reaction force acting on the hinge joint of the gooseneck and the cargo platform. The horizontal force is 500 KN, the vertical downward force is 4 000 KN