What is Low Bed Semi Trailer?How to Select Lowboy Truck ...

Introduction of Low Bed TrailerLow Bed Trailer

I. What is a low flatbed semi-trailer?

Let's delve deeper into the topic. Low flatbed semi-trailers are specifically designed for transporting heavy loads such as tractors, buses, specialized vehicles, and even rail vehicles. They are also capable of carrying mining, forestry, and agricultural machinery including excavators, loaders, pavers, and cranes.

In comparison to container semi-trailers (often utilized for transporting containers), low bed trailers demonstrate a lower center of gravity. This design characteristic enhances stability and safety, thereby improving their ability to navigate overhead barriers when carrying taller cargo.

Loading machinery onto a low bed semi-trailer typically involves accessing the trailer from the rear. This process may entail moving equipment from the rear wheel frame, or removing wheels before securing the machinery onto the trailer.

low bed trailer transport excavator

II. Structure of Low Bed Semitrailer

Low bed semi-trailers generally feature a concave beam-type structure. The front section is known as the gooseneck, connecting to the traction saddle at the front and the semi-trailer at the rear. The central part serves as the cargo platform, while the rear is dedicated to the wheel frame.

III. Body assembly for low bed semitrailers

1. Understanding the jack of low bed semi trailer.

Familiarity with the jack is common among low bed semi-trailer and fence semi-trailer owners. Proper handling is crucial to prevent accidents during use.

(1) Ensure the support bar on the jack arm fits securely into the groove of the fixed support point for stability.

(2) Load should be placed at the specified support location to prevent potential damage to the low bed semi-trailer and other vehicles.

(3) The jack foot should only be placed on a solid surface; using wooden blocks is advisable on soft ground to distribute weight adequately.

(4) Raise the jack gently and avoid sudden movements to maintain vehicle balance during the process.

2 axles low bed semitrailer

2. Next, consider the transmission shaft of the low bed semi-trailer.

This component transmits power to the wheel mechanism, playing a vital role in preventing damage during operation. The transmission shaft utilizes a constant speed universal joint, which is sealed with a rubber sleeve. If the rubber casing is compromised, contaminants can enter the universal joint, wearing down the drive shaft and shortening its lifespan.

3. The third focus is on maintenance of the low bed semi-trailer.

Routine maintenance is essential to prolong vehicle life and performance.

4. Finally, address the seat belt of the low bed semi trailer.

Seat belts are critical for safety in low bed semi-trailers and other vehicles. It's essential for occupants to fasten their seat belts, as they are vital for personal safety while driving.

Maintaining awareness and implementing safety measures is crucial for all users.

3 axles low bed trailer

IV. Low bed semitrailer features

Low bed semi-trailers are versatile, suitable for transporting various machinery, large objects, highway construction equipment, tanks, power plant apparatus, and steel products.

The low flat

1. Variants of low bed semi-trailers include flat plate, concave beam, and exposed tire designs. Typically, the longitudinal beam is either straight or of a gooseneck configuration, built with high rigidity and strength.

Frame loading

2. The cargo platform’s main plane is low, ensuring stability during transport across various types of construction equipment, heavy machinery, and steel materials.

Three-axis balanced

3. The use of three-axis balanced, biaxial balanced, or rigid suspension systems encourages equilibrium between front and rear plate springs, allowing equal deflection for consistent weight distribution.

4. Low bed semi-trailer products are highly adaptable for different machinery, oversized items, highway construction equipment, tanks, power generators, and steel transportation, enhancing efficiency and speed. Advanced computer-aided design support optimizes flexibility in configuration for user-specific load requirements. Low bed semi-trailers can support various heavy equipment such as excavators and bulldozers and come equipped with axle configurations capable of handling weights ranging from 30 to 300 tons.

V. Specifications of low bed semi trailers

Two axles: 9m, 11m, 12m, and 13m.

Typical dimensions are L × W (11x3m)

For heavier configurations, the longitudinal girder height is 500mm, upper and lower wings are 20mm each, the web is 12mm, side beams consist of channel steel, and the floor is 4mm patterned steel.

Tyres: 8.25-20 wire x8.13m.

11.2 meters 2 axle low bed trailer drawing

Three axles: 9.5m, 11m, 13m, and 13.75m.

Standard configurations generally offer competitive pricing and common sizes are length × width (13 x3m).

For heavy configurations, the longitudinal beam height is 500 mm, wing dimensions are 20 mm, the web is made of 25# channel steel, known as 14# channel steel, with a textured floor of 4 mm thick, complemented by standard rims and a spare tyre frame.

Tyres: 8.25-20 steel wire tyre x12.

13 meters 3 axles Concave beam low bed trailer drawing

VI. SUNSKY produce professional low flatbed trailers

SUNSKY TRAILER specializes in producing a range of low bed semi-trailers including models that are 13 meters, 12 meters, and 10 meters in length, as well as lightweight alternatives. The manufacturing process incorporates cutting-edge design and robust materials to ensure durable and adaptable trailers.

Excellent technology. The main parts of the trailer are processed using state-of-the-art equipment, with components such as the longitudinal beam expertly welded using automatic submerged arc techniques. The entire electrical system is rigorously tested to ensure functionality and safety during operations.

Frame. The structural framework combines high-strength steel to maintain integrity and durability while effectively dispersing physical stresses encountered during loading and transportation.

Axles. Quality axles are sourced from reliable manufacturers to ensure superior load-carrying capacity and reliable performance. Options for ABS anti-lock braking systems are also available to enhance safety during transport.

14 meters 4 axle low bed trailer drawing

VII. Suspension System of Low Bed Semitrailer

1. Rigid suspension

 axle with spring rigid suspension

The suspension system plays a critical role in the vehicle’s handling and ride comfort, combining components like springs and dampers. The design of the suspension directly influences overall stability and safety during transit.

Rigid suspension systems incorporate solid components to enhance structural integrity, minimizing components' movement for effective load management and balance throughout the journey.

Compared to flexible systems, rigid suspensions provide benefits such as reduced wear and maintenance needs, offering a durable solution for low-bed trailer transport requirements.

2. How to recognize differences between rigid and flexible suspension?

(1) Varied properties distinguish the two; in rigid systems, wheels are directly linked by axles, while flexible systems allow greater movement between wheel pairs.

(2) Usage variations also exist, with rigid systems recommended for low-speed applications where cargo stability is prioritized, whereas flexible systems cater to higher-speed needs.

VII.How to keep cargo stable on a low bed trailer

1. Increase the base scale

Scaling up the base supports better stability without compromising strength. Techniques include relocating supports for a broader load base and increasing contact points as necessary.

2. Boost friction

Heightened friction levels at load-contact points reduce slipping risk, enhancing transportation stability.

3. Lower center of gravity

A lower center of gravity contributes significantly to an object’s stability during transport, leading to the strategic placement of heavy items at the bottom.

4. Manage speed

Maintaining lower speeds is vital for stability, minimizing the risk of load shifting or toppling during transport.

5. Emphasize driver experience

Driver training on loading techniques and vehicle dynamics increases safety throughout transit.

X. Driving skills of low flatbed semi-trailers

Proper driving techniques and adherence to safety protocols are essential for successful maneuvering of low bed trailers. Notably, maintaining proper alignment between the traction pin and axles prevents undue tire wear and potential mishaps.

With dedicated customer service and a focus on quality, Haiheyuan aims to become your trusted partner in the transportation industry, delivering products with competitive pricing and timely services.