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How does lowboy trailer work?

Views: 2     Author: Site Editor     Publish Time: 2022-09-12      Origin: Site

Low flatbed semi-trailers are usually used to transport heavy vehicles (such as tractors, buses, special vehicles, etc.), rail vehicles, mining machinery, forestry machinery, construction machinery (such as excavators, bulldozers, loaders, road pavers, cranes, etc. ) and other heavy loads, the lower the center of gravity, the better the stability and safety, and the greater the ability to transport super high loads and pass overhead obstacles.

Low flatbed semi-trailers usually use a concave beam (or well-type) frame, that is, the front section of the frame is a gooseneck (the traction pin of the front section of the gooseneck is connected to the traction saddle on the tractor, and the rear end of the gooseneck is connected to the semitrailer frame. connected), the middle section is the cargo platform (the lowest part of the frame), and the rear end is the wheel frame (including wheels)

When loading mechanical equipment on a low-bed semi-trailer, it is usually loaded from the rear end of the semi-trailer, that is, by moving the mechanical equipment from the rear wheel frame or removing the wheels, and then fixing the mechanical equipment on the semi-trailer. superior.

Low flatbed semi-trailer is also widely used for transportation of various mechanical equipment, large objects, road construction equipment, large tanks, power station equipment and various steels.

   Lowboy trailer structure and loading

   Low flat semi-trailer usually adopts concave beam type (or well type) frame, that is, the front section of the frame is a gooseneck (the traction pin of the front section of the gooseneck is connected to the traction saddle on the tractor, and the rear end of the gooseneck is connected to the semitrailer frame. connected), the middle section is the cargo platform (the lowest part of the frame), and the rear end is the wheel frame (including wheels).lowboy trailer supplier -Hyzer

   When loading mechanical equipment on a low-bed semi-trailer, it is usually loaded from the rear end of the semi-trailer, that is, by moving the mechanical equipment from the rear wheel frame or removing the wheels, and then fixing the mechanical equipment on the semi-trailer. superior.

   Detachable lowboy features

   1. The low flatbed semi-trailer series has flatbed, concave beam and tire exposed structure, and the longitudinal beam is straight or gooseneck. The frame is stepped, and the longitudinal beam section is I-shaped, which has the characteristics of high rigidity and high strength.

   2. The main plane of the frame and platform is low, which ensures the stability of transportation and is suitable for carrying all kinds of construction machinery, large-scale equipment and steel.

   3. It adopts three-axis balance type, two-axis balance type or rigid suspension, and a mass balance block is installed between the front and rear leaf springs, which can make the deflection of the front and rear leaf springs change in an equal amount, so that the front and rear axles are balanced.

   4. The low-bed semi-trailer series products are suitable for the transportation of various kinds of mechanical equipment, large objects, highway construction equipment, large tanks, power station equipment and various steels. They are widely used, efficient and fast. The whole vehicle adopts advanced computer-aided design software, and the optimization design is flexible and diverse, and the frame bearing surface is designed according to user requirements to meet the transportation of various special goods.

The semi-trailer frame is mainly composed of beam-welded I-beam, support beam, connecting beam, side beam, lock head, traction pin connection device, panel, etc.

1. The side beams are generally channel steel or bending parts. At present, most of the trailers use channel steel. There will be more side beams for light body hanging bending parts, because the requirements for strength are not too large. The supporting beam is the through beam, and now most of them are W beams (the above picture shows the W beam as the through beam), and only channel steel above 10# is used for heavy cargo.

2. The traction pin is an important component that connects the semi-trailer and the tractor and bears the traction force, and is connected to the traction seat. It is generally forged from steel with a chrome alloy structure. There are 50# traction pins and 90# traction pins for different cargo tonnage. Generally, it is limited to the total weight of the 50T trailer and the cargo. The 50# pin is used below 50T, and the 90# pin is used for the above 50T. If it is above 90T, the 90# traction pin is used for insurance.

3. The general semi-trailer suspension adopts non-independent steel plate stamping rigid suspension, which is composed of tandem leaf springs and suspension supports, which are used to support the load and slow down the impact of the dynamic load of the vehicle. Due to the different uses of special vehicles, there are different requirements for the design of the suspension. There are four commonly used suspensions: tandem leaf spring balance suspension, single-point suspension, air suspension, and rigid suspension (one line and two axles).

4. The semi-trailer axle is the supporting bridge. In China, the main ones are Guangdong Fuhua Bridge, BPW Bridge, York Bridge and Onkyo, among which Guangdong Fuhua Bridge is the most popular. The force used to support and transfer loads between the frame and the wheels.

5. The electrical system of the semi-trailer is composed of seven-core sockets, cables, gas circuits, various lamps, etc., which are used for lighting, safety warnings, and air supply for brakes.

6. The supporting device of the semi-trailer is mainly used to support the trailer when it is detached, and is composed of outriggers, connecting brackets, etc. There are many brands, York, Pesmark, Fuhua, Yost, etc. are all good outriggers.

7. The semi-trailer protection device is composed of side protection and rear protection to protect pedestrians and other vehicles from getting under the semi-trailer.

8. Other accessories on the semi-trailer include tool boxes, spare tire racks, gantry racks, stakes, etc. There are also some small accessories such as rope tighteners, rope hooks and other highly functional accessories, which should be selected according to the type of goods.

The main types of low-bed semi-trailers are: two-axle high-low-high, two-line four-axle high-low-high, three-axle high-low-high, three-line six-axle high-low-high.

According to the number of axles and the size of the tires, the load of the low-bed semi-trailer is also different. The more the number of axles, the greater the load, and the load range is between 20-150 tons.



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