A semi-trailer is a truck and trailer combination without a front axle. When detached from a vehicle, semi-trailers typically have legs to support them. A substantial percentage of its weight is supported by a road tractor unit. The trailer’s brakes are automatically applied when it is detached. So, the only device that may release the brakes is the air pump on the truck.
Benefits of Semi Trailer
Increased efficiency
One of the most significant benefits of using semi trailers is their ability to increase efficiency in transportation operations. Semi trailers are able to carry larger loads than traditional trucks, allowing businesses to transport more goods in fewer trips. Semi trailers can be easily detached from the truck cab, making it quick and easy to load and unload goods at various locations.
Cost savings
Another advantage of using semi trailers is the cost savings they provide. By transporting larger loads in a single trip, businesses can reduce fuel expenses and labor costs associated with multiple deliveries. This can result in significant savings over time, making semi trailers a cost-effective transportation solution for businesses of all sizes.
Versatility
Semi trailers are available in a variety of sizes and configurations, making them a versatile option for transporting different types of goods. From refrigerated trailers for perishable goods to flatbed trailers for oversized cargo, there is a semi trailer to meet virtually any transportation need.
Enhanced safety
Semi trailers are designed with safety in mind, featuring advanced braking systems, sturdy construction, and other safety features to protect both the goods being transported and the drivers on the road. The detachable nature of semi trailers can make it easier for drivers to maneuver in tight spaces and navigate difficult road conditions, further enhancing safety on the road.
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Why Choose Us
Factory
The vehicle factory was established in 2007, covering an area of more than 200 acres, with a production plant of 12,000 square meters and a total of more than 800 employees.
Professional team
We have a professional team that will do its best to meet the needs of customers and partners, and the society will work together to achieve maximum value.
Provide economical solutions
We are committed to providing customers with the most economical transportation solutions through long-lasting quality, preferential prices, and permanent parts supply services.
Strong production capacity
We have first-class assembly line production equipment with strong production capacity, adopt advanced production technology and high-quality raw materials and parts, and have a reliable quality assurance system.
Difference Between Semi Trailers And Full Trailers
The connection mode and stress characteristics of the trailer body and the tractor are different. The semi-trailer needs a support point provided by the tractor. In addition to providing power, the tractor also needs to bear about half of the load of the semi trailer. Therefore, the force at the coupling of semi-trailer is not only the tensile force in the horizontal direction but also the supporting force in the vertical direction provided by the tractor. The full trailer is connected with the tractor(heavy towing truck) through a simple hook. The tractor/truck does not need to bear the trailer load, just only provides dynamic tension to help the trailer overcome the road friction resistance. Therefore, the stress characteristic of the connection is mainly the tensile force in the horizontal direction.
What Are The Dimensions And Capacity Of A Semi Trailer?
Semi trailers are generally 48 to 53 feet long. This, combined with the fact that only half of a semi-trailer's weight is supported by its own axles, means they can transport heavier and larger loads. The maximum transport weight of a semi trailer is 80,000 pounds. This includes the vehicle itself and any goods being transported on the road. Semi trailer can also carry 42,000 to 48,000 pounds of cargo, depending on the type of trailer attached.
Safety features for semi-trailers include brakes, lights, reflective markings, and conspicuity tape to enhance visibility on the road. Additionally, semi-trailers should be equipped with anti-lock braking systems and electronic stability control to help prevent accidents and improve handling.
Types selection
According to different uses, semi trailers are divided into various types such as flatbed, box, refrigerated, tank, and low flatbed. Choose the type of semi trailer that suits you based on your transportation needs.
Structural selection
The structures of semi trailers are divided into front and rear axle types, central axle types, self-unloading types, etc. The front and rear axle type is suitable for the transportation of large items, the self-unloading type is suitable for the transportation of bulk goods, and the central axis type has the characteristics of good stability and stable driving.
Load selection
When choosing a load, you need to comprehensively consider multiple factors such as the weight, volume, and road conditions of the items you are transporting, and choose a load that suits you.
Quality, size
Semi trailers of good quality should be selected to ensure driving safety and transportation quality. Choose the right size semi trailer for you based on your needs and road conditions.
Why the Dimensions of a Semi Trailer Matter
The semi trailer dimensions are equally as vital because it determines how much cargo you can haul before you have to make a stop. The length, width, and height of your semi trailer all play a crucial role in your hauling process. Semi trailer dimensions represent a lot of the regulatory aspects of the semi truck industry. As a result, they play a significant role in helping to maintain that smooth flow of commerce and industry that we all want to see.
How Many Load Bars Does a Semi Trailer Need?
The number of load bars you need for a semi trailer depends on your load and the size of your semi trailer. Normally, it is wise to equip each shipment with four load bars to prevent the goods from moving during transportation and ensure stability and safety. Your cargo should have guardrails at the front and rear.
Types of Semi Trailer
Reefer semi trailers
Reefer semi-trailers transport refrigerated or frozen items across the country. Although not as common, reefers can also be set to a different setting in order to transport heated goods as well. Reefers use either diesel fuel or electricity to power the cooling system.
Flatbed semi-trailers
A flatbed trailer is an open-air trailer used for the transportation of large, bulky and abnormal freight. A few examples of items you may see on a flatbed trailer include tractors, bulk machinery items like engines or transmissions or even vehicles. In addition to open-air style, flatbed trailers also come with the capabilities to enclose your goods if needed.
Lowboy semi-trailers
A lowboy semi-trailer is a specially designed trailer that features a lower deck which helps it to transport tall and heavy items. Low boy trailers specialize in hauling heavy-duty construction equipment and machinery. The low deck height makes loading and unloading easier and safer because it reduces the angle of approach.
Enclosed box-style semi-trailer
A dry van is your typical enclosed box-style semi-trailer that transports goods nationwide. This type of trailer is the most popular and versatile on the market. This is because it can carry nearly anything that will fit in its dimensions. Some common commodities shipped via dry van include appliances, building materials, car parts, furniture and general freight.
Material of Semi Trailer
Semi trailer and semi trailer parts adopts high-quality steel, advanced technology, strict production and manufacturing. The whole vehicle structure is with reasonable and reliable performance, simple operation and beautiful appearance.
1. Examine the coupling devices' functioning and find out if they fit together. Connect the prime mover and semi-trailer.
2. Connect the air brake lines of the prime mover to the semi-trailer and ensure that they have safe support. Inspect the connection by taking the weight off the trailer legs and disengaging the clutch.
3. Repeat this step until a proper connection is made. Engage the locking device with the help of an electric cable and check all the lights of the semi-trailers.
4. Remove the wheel chocks once you couple the prime-mover to the semi-trailer.
How to Uncouple a Semi Trailer
1. Position the semi-trailer and put sporting plates or boards under the landing gear of the trailer. Apply the brakes or chocks to hold the semi-trailer and release the kingpin lock lever.
2. Lower the landing gear using a handle that will make firm contact with the support plates or boards. Landing gear will support the semi-trailer and remove the weight off the prime mover, which will stop rising.
3. Disconnect air lines and electric cables. Secure the cables and lines to avoid any damage to them. Raise the handle lock pin and release the turntable latch.
4. Now pull the prime mover and apply the parking brakes. Check the semi-trailer support and ensure its safety. Slowly pull the semi-trailer by releasing the parking brake.
Application of Semi Trailer
Logistics industry
In the logistics industry, semi-trailers are one of the most commonly used vehicles. The transportation of large items requires semi-trailers, such as construction machinery, building materials, lumber, etc., which require semi-trailers to improve transportation efficiency while ensuring safety and reliability.
Architecture construction
During the construction process, a large amount of materials, equipment and machinery are required for operation, and these items need to be transported by semi-trailers, such as cranes, concrete mixer trucks, cement tank trucks, etc.
Agricultural industry
In the agricultural field, semi-trailers are also widely used. They can be used as trailers for agricultural machinery to transport agricultural tools, pesticides and other items to cultivated land.
Port logistics
Semi trailers can be used for container transportation and stacking within the port. As a vital component of the port logistics system, semi-trailers provide services and guarantees for international road transportation and maritime transportation.
Components of Semi Trailer
A semi trailer is composed of multiple components such as a frame, a carriage, wheels, a suspension system, and a braking system. The various components cooperate with each other to form the overall structure of the semi-trailer, allowing the semi trailer to have the functions of carrying goods and transporting goods.
Tires
Avoid unexpected costs and hassles by inspecting the tires regularly. This will keep drivers safe as well. Check the tires before every trip for damage and leaks. Unusual wear on tires could be related to problems elsewhere, such as the suspension and shock absorbers.
Lubrication
When lubing semi-trailer parts, be sure to start by checking the instructions to make sure you’re choosing the right kind of lube and applying it correctly. Check around the main rail, drag link and kingpin once every 12,000 to 24,000 miles.
Brakes
This is one of the most common things you might think of when going over a maintenance checklist and for good reason. They’re essential to the truck’s safety. Have them inspected per guidelines. In most instances, you can have the brakes checked every time the truck needs an oil change.
Lights
Part of safe highway travel is making sure that all lights are functioning on your trailer. If even one light is out, it can lead to unsafe conditions. And if something is wrong, semi-trailer parts for lighting systems are a quick, cost-effective fix in many cases.
How Often Should you Service Your Semi Trailer?
It is recommended that semi trailers be serviced every 12,000-15,000 miles or approximately every 20,000 kilometers, but this is not always accurate. Your ideal service schedule may depend on the specifics of your semi trailers operation. Preventative maintenance is the key to keeping your semi trailer on the road.
How to Secure Your Semi Trailer Storage Solution
Choose the right location
The first step in securing your semi-trailer is choosing the right location to park it. Ideally, the location should be well-lit, easily accessible, and away from high-traffic areas. If you're storing the trailer on your own premises, make sure the area is secure and can be easily monitored.
Install physical security measures
Once you've chosen the right location, the next step is to install physical security measures to deter theft or vandalism. Use high-quality locks to secure the doors and hitch of the trailer. Consider using a locking kingpin to prevent unauthorized hitching. Install an alarm system that will sound if the trailer is tampered with or moved without authorization. Install surveillance cameras to monitor the area around the trailer.
Conduct regular inspections
Even with physical security measures in place, it's important to conduct regular inspections of the trailer to make sure it hasn’t been tampered with or damaged. Inspect the locks, hinges, and doors of the trailer, and look for signs of forced entry or attempted theft. If you notice any damage or signs of tampering, report it to the authorities immediately.
Choose a secure storage yard
If you don't have a secure location to store your semi-trailer, consider parking it at a storage yard that specializes in semi-trailer storage solutions. With security measures such as 24/7 video surveillance, electric security gates, and regular security patrols, you can rest assured that your semi-trailer is in good hands.
FAQ
Q: Why is it called semi-trailer?
Q: What is the most common semi-trailer?
Q: What are the dimensions of a typical semi-trailer?
Q: What are the legs on a semi-trailer called?
Q: What is the white light on the front of a semi trailer?
Q: What are semi trailers used for?
Q: What is the difference between a semi-trailer and a full trailer?
Q: Why do semi trailers have skirts?
Q: How much weight can a semi-trailer carry?
Q: How is cargo loaded onto a semi-trailer?
Q: What safety features are important for semi-trailers?
Q: What maintenance is required for semi-trailers?
Q: What are the different types of semi-trailers?
Q: What is the average life of a semi trailer?
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