Monthly Archives: July 2025

　　Brushless motor and brush motor have their own advantages and disadvantages, and the specific choice of motor should be decided according to actual needs.Even so, 輪椅 We must also adhere to the quality of the industry and create unique products for the company. https://www.hohomedical.com/collections/wheelchair

　　

　　Brush motor is a common motor used in early electric wheelchairs. Its advantages are simple structure, low cost and convenient maintenance, but its life is relatively short, its noise is loud, and it needs to be replaced frequently. Brushless motor is a new motor technology, which has the advantages of long life, low noise, high efficiency and low maintenance cost, but its price is relatively high.

　　

　　Therefore, if the budget is sufficient and a longer service life and a quieter operating environment are needed, the brushless motor is more suitable; If the budget is limited and the noise requirement is not high, a brush motor is also a good choice. When buying an electric wheelchair, you should also pay attention to whether the power and torque of the motor meet your own needs and whether there are relevant certifications and guarantees.

　　

　　Is the electric wheelchair as long as possible?

　　

　　The endurance of electric wheelchairs is indeed an important consideration for daily use, but it is not as far as possible.

　　

　　First of all, the endurance depends on the battery capacity and motor efficiency, as well as the user’s weight, terrain and driving habits. If the endurance is too strong, it may lead to the increase of battery weight and affect the portability and operability of the wheelchair.

　　

　　Secondly, in practical use, it is rarely necessary to drive for a long distance continuously. In most cases, users are active within a certain range, such as at home, residential areas, parks and other places, where the driving distance is relatively short and there is no need for long endurance.

　　

　　Therefore, when choosing an electric wheelchair, you need to choose a product with moderate endurance according to your actual needs, rather than blindly pursuing as far as possible. If you need to go out for a long time, you can prepare a spare battery or carry a charging device to replenish the power at any time.

　　

　　Is the electric wheelchair a lead-acid battery or a lithium battery?

　　

　　Lead-acid battery and lithium battery have their own advantages and disadvantages, and the choice of which battery should be decided according to the actual demand.

　　

　　Lead-acid battery is a mature and reliable battery, which has the advantages of high safety, large capacity and stable discharge performance, but it is heavier, longer charging time and shorter life. Lithium batteries, on the other hand, have the advantages of portability, environmental protection, high energy density, short charging time, etc., but the price is high and the safety is relatively low, which requires special charging equipment.

　　

　　Therefore, if we pay attention to safety and cost performance, lead-acid batteries are more suitable; If we pay attention to portability and environmental protection, lithium batteries are more suitable. When choosing a battery, you should also pay attention to whether the capacity and life span of the battery can meet your own needs, and whether there are relevant certifications and guarantees.

　　

　　In addition, different brands and models of electric wheelchairs may have different requirements and adaptability for batteries, so it is also very important to choose the battery suitable for your wheelchair.

　　Semi-trailer VS full trailer: a comprehensive analysis from name to essenceHowever, with the development of the industry, 3 Axle 45 CBM Bulk Cement Tank Trailer It will also bring us more and more consumer experiences, so that users can really feel the upgrade and change. https://www.semitrailerdirect.com/collections/cement-tanker-trailer-r3vqkdyo

　　

　　Semi-trailer and full trailer, the two names are only one word apart, but they are very particular! I just came back from a survey of a logistics park. The neat rows of semi-trailers in the park reminded me that many riders asked me this question: Why are semi-trailers called “semi-trailers”? Is there a full trailer? What is the difference between them? This car, it’s interesting! Today, the senior schoolmate will thoroughly explain these two models to all riders from the structure to the use.

　　

　　Why is it called a “semi-trailer”?

　　

　　Semi-trailer is called “semi-trailer” because of its structural characteristics.

　　

　　To put it simply, the wheels of a semi-trailer are generally installed at the rear end of the carriage, and they cannot stand independently. It is necessary to put the front end of the trailer on the saddle behind the tractor.

　　

　　This design makes the trailer and the tractor bear part of the weight of the carriage, and the tractor not only provides forward traction, but also provides the force to support the goods upward.

　　

　　The trailer only bears part of the weight of the goods, so it is called “semi-trailer”.

　　

　　Imagine that a semi-trailer is like a big guy with only hind legs, and it needs to lie down on the tractor in front to stand firm.

　　

　　In the state of separation, the semi-trailer needs to use special legs to keep its balance, just like building a small bench, otherwise it will “fall down”.

　　

　　Full trailer: Is it really “full”?

　　

　　In contrast, the full trailer is much easier to understand.

　　

　　Wheels are installed at the front end and rear end of the full trailer, so that it can stand independently and stably, and there is no need to “lie down” on the tractor.

　　

　　When it is connected with the tractor, it is only connected through the traction device, and the tractor only provides forward pulling force and does not share the weight of the goods.

　　

　　In other words, the full trailer itself fully bears the weight of the goods, so it is called “full trailer”.

　　

　　For example, a full trailer is like an independent individual with front and rear legs. It only needs a tractor to pull it away, and it can carry the weight of all the goods by itself.

　　

　　This car, something!

　　

　　Semi-trailer VS Full Trailer: A Practical Comparison

　　

　　Many riders may ask: Since the full trailer can be independently supported and looks more powerful, why is the semi-trailer more common?

　　

　　The reason is simple: the semi-trailer has better handling when turning and reversing.

　　

　　Because the front end of the semi-trailer rides on the tractor, a hinge point is formed, and the turning radius is smaller, which is especially suitable for driving on urban roads and narrow spaces.

　　

　　Although the full trailer can be supported independently, it needs more space when turning and is more difficult to control.

　　

　　In addition, the connection between the semi-trailer and the tractor is more stable and safer when driving at high speed.

　　

　　When the full trailer is driving at high speed or braking urgently, it may appear the phenomenon of “pushing the head”, which will affect the driving safety.

　　

　　Don’t forget the center axle trailer.

　　

　　When it comes to trailer types, there is also a “middle school”-the middle axle trailer.

　　

　　Its shape is similar to that of a full trailer, and it can also bear its own weight independently, without being shared by a tractor.

　　

　　However, the difference is that the axle of the center axle trailer is concentrated in the middle part of the carriage, so it can’t be balanced independently, and it also needs leg support when it is separated from the tractor.

　　

　　This “three unlike” design has unique advantages in some specific scenarios, such as urban distribution and other occasions.

　　

　　However, under the complicated and diverse road conditions in China, its application scope is limited.

　　

　　Development prospect of semi-trailer

　　

　　In recent years, new transport vehicles, such as mid-axle trailers and automobile trains, are in full swing, so will the prospect of semi-trailers be compressed?

　　

　　The answer is no.

　　

　　Semi-trailer will still occupy the main position of transportation for a long time.

　　

　　The reasons are as follows:

　　

　　Strong adaptability: China’s terrain is diverse and the road conditions are complex. After years of development, semi-trailers have stronger adaptability.

　　

　　Good stability: compared with emerging models, semi-trailer is more stable and has a higher safety factor.

　　

　　Cost advantage: low initial purchase cost and strong adaptability to all kinds of goods.

　　

　　International trend: In developed countries in Europe and America, semi-trailers account for 70%-80% of the total transportation.

　　

　　After so many years of traveling, my senior sister found that many new technologies and models were very popular at first, but few of them finally gained a foothold in the market.

　　

　　Semi-trailers have been popular for so many years, which has its own reasons.

　　

　　Types of semi-trailers

　　

　　Semi-trailer is not just a model, but a huge family.

　　

　　According to the different transportation needs, the upper part of semi-trailer is also different:

　　

　　Fence plate: the most common semi-trailer type, surrounded by fences, suitable for transporting all kinds of ordinary goods.

　　

　　Warehouse-gate type: the side is designed with a fence, which is convenient for loading and unloading large goods.

　　

　　Van type: closed carriage, suitable for transporting goods that need dustproof and rainproof.

　　

　　Skeleton: a frame structure specially used for transporting containers.

　　

　　Container-type: Semi-trailer with directly integrated container.

　　

　　Tank type: tank design for transporting liquid or gas.

　　

　　Low flat type: the bottom of the carriage is low from the ground, which is convenient for loading and unloading heavy machinery.

　　

　　Self-unloading semi-trailer, which can automatically unload, is often used to transport coal, sand and gravel.

　　

　　There are so many kinds, each of which has its own specific application scenarios, which is one of the reasons why semi-trailers can occupy a dominant position in logistics and transportation.

　　

　　Senior sister has something to say

　　

　　From a technical point of view, semi-trailer and full trailer have their own advantages, and which one to choose should be decided according to actual demand.

　　

　　For long-distance transportation and large goods, semi-trailer is more suitable;

　　

　　For short-distance transportation and light goods, the full trailer may have more advantages.

　　

　　In the future, with the continuous development of China’s logistics and transportation industry, the trends of lightweight, standardization, specialization, intelligence and remote control will become more and more obvious.

　　

　　Semi-trailers will also develop in a more environmentally friendly, intelligent and efficient direction.

　　

　　Dear riders, what kind of trailer is common around you? Welcome to share your opinions and experiences in the comments section!

　　

　　Senior Q&A time: If you have any other questions about semi-trailer and full trailer, please leave a message in the comment area, and I will choose the hot questions to answer!

　　Semi-trailer, a common transport model, occupies a decisive position in the transport field with its excellent bearing capacity and loading capacity. It can easily meet the transportation needs of various materials, so it is favored by drivers and friends. However, the structure of semi-trailers is diverse, the classification is detailed, and the relevant laws and regulations are quite complicated, which often confuses some card friends in details. Next, we will discuss some basic knowledge and core concepts of semi-trailer in depth to help you build a more comprehensive understanding.If you want to make a big difference in the market, Bulk Cargo Semi Trailer It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.semitrailerdirect.com/collections/drop-side-semi-trailer-dn87hssd

　　

　　¢ Detailed explanation of semi-trailer model and national standard.

　　

　　Semi-trailer, the right-hand man in the transportation field, plays an indispensable role in logistics and freight industry with its unique structural characteristics and wide application scenarios. Its axle is located behind the center of gravity of the vehicle, and it is equipped with a connecting device that can transmit vertical or horizontal force, which is connected with the tractor to form a semi-trailer train together. This type of vehicle includes not only truck semi-trailers used for cargo transportation, but also various special semi-trailers and sojourner semi-trailers to meet diversified transportation needs.

　　

　　¢ Detailed explanation of trailer product model

　　

　　When buying and using semi-trailers, card friends often come into contact with the announced model of semi-trailers. What kind of information does this string of letters and numbers contain? In fact, according to China’s car coding rules, this model has a clear meaning. The letter at the beginning of the code indicates the manufacturer of the semi-trailer, and the first digit is used to distinguish the vehicle category. For example, both the watch semi-trailer and the special semi-trailer are represented by 9. The next two figures reflect the total mass of the model. The last digit is the product serial code, followed by the letters indicating the classification code of the special vehicle, and the last part of the model is the enterprise-defined code.

　　

　　Parameter limit of freight trailer series spectrum (GB/T6420-2004)

　　

　　The national standard has formulated a series of detailed parameter limits for semi-trailers, covering the dimensions, axle load and mass. For different types of semi-trailers, such as integral closed box-type semi-trailer, container semi-trailer and tank-type semi-trailer of five-axle automobile train, the vehicle length is strictly limited, and the maximum length shall not exceed 13.0 meters. For the whole closed van semi-trailer used on high-grade highways, the vehicle length limit is relaxed to 14.6 meters. In addition, the length limit of vehicles transporting specific goods, such as low-flat trains, frame container trains and special semi-trailers, can be exempted from the standard under certain conditions.

　　

　　¢ Understand the diverse classification of semi-trailers in all directions.

　　

　　Semi-trailers can be divided into many types according to different classification standards. According to the number of axes, there are different choices such as 1 axis, 2 axis and 3 axis; The length of the announcement determines the size of the model, such as 8.6 meters, 10 meters, 11.16 meters, etc. In terms of tonnage, it provides a variety of different specifications such as 9T, 15T and 20T. In daily use, we usually classify and choose according to the vehicle type.

　　

　　Barn semi-trailer

　　

　　As a unique type of semi-trailer, the barn semi-trailer plays an important role in the freight field. Its design feature is that the cargo compartment part adopts the warehouse grid structure, which can flexibly adapt to the transportation needs of various goods and improve the transportation efficiency. In the national standard GB/T6420-2004, the parameter limit of the barn semi-trailer is also clearly defined to ensure its safe and efficient service to the freight industry.

　　

　　Skeleton container semi-trailer

　　

　　The skeleton container semi-trailer is an innovative design in the field of semi-trailer. Its cargo compartment adopts skeleton structure, which enables the vehicle to bear the container more stably in the transportation process and improve the transportation safety. In addition, this design also takes into account the transportation efficiency, making the skeleton container semi-trailer a right-hand man in the freight industry.

　　

　　Double-bridge concave low flat trailer

　　

　　Double-bridge concave low-flat trailer is one of the semi-trailer types, which is characterized by its unique concave design, which makes the vehicle have higher stability and safety during loading and transportation. In addition, this trailer is also suitable for a variety of transport scenarios, such as ordinary fence, semi-trailer of barn, semi-trailer of pulling coal, etc., and it is an indispensable and important equipment in logistics and freight industry.

　　

　　¢ Analysis of key details of semi-trailer structure

　　

　　Semi-trailer is a complex mechanical system composed of several key components. These components include carriage, frame, legs (supporting devices), suspension, axle (axle assembly), electrical circuit, protective net and toolbox. Each component has its unique function and function, which together constitute the stability and efficiency of semi-trailer.

　　

　　As an important part of semi-trailer, the core function of carriage is to restrain and carry goods. There are various types of car railings, including large vertical, small vertical, flat, corrugated and embossed, etc., to meet different transportation needs. Usually, the thickness standard of the guardrail varies with the vehicle type and use. For example, the standard thickness of the guardrail is 1.5mm for ordinary vehicles, 1.2mm for light vehicles, and 2.0mm for heavy-duty coal haulers and dump semi-trailers to ensure safety and stability under extreme transportation conditions.

　　

　　Hinge plays a vital role in the manufacture of carriage, which is responsible for connecting the carriage rail and the frame to ensure the smooth connection between them. According to different stress conditions, different forms of hinges will be selected, such as large hinges, small hinges, flat hinges and cast steel hinges.

　　

　　The frame, the key part of the carriage manufacturing, is made of longitudinal beams, through beams and steel members welded by steel plates for vehicles, which constitutes a space frame-type stable structure. It not only carries the main load of the car body, but also is an important foundation for installing traction pins, suspension and support devices.

　　

　　The floor of the trailer, as the part that the trailer directly contacts with the goods during daily loading, is also the most seriously worn part in the whole trailer. According to the different types of goods carried, the car floor is mainly made of different materials, such as 3mm flat plate, 4mm flat plate, 3mm diamond plate and 4.5mm diamond plate.

　　

　　Leg, as a key device to support the front load of the semi-trailer after being detached, is composed of base, pull rod transmission mechanism, inner tube, outer tube, gearbox and control crank. According to its working principle, the leg can be divided into two types: single action and linkage. Each single-acting leg is equipped with a crank, while the linkage leg can control the actions of multiple legs with only one crank.

　　

　　Suspension, as a key device for load transmission and shock absorption, covers many parts such as bracket, pull rod, upper and lower axle clamp, U-bolt, leaf spring and parallel arm. Leaf spring, as the core component, is firmly fixed on the axle by U-bolt, and its two ends are cleverly stuck in the frame bracket and connected in series by the balance arm, thus achieving self-balance in a certain range. The spring mainly bears the vertical gravity on the frame, while the horizontal force is transmitted through the lower axle clamp and the pull rod. In addition, by flexibly adjusting the pull rod, the parallelism of the shaft can be ensured, and then the abnormal wear of the tire can be avoided.

　　

　　Wheel-axle assembly, a key component, covers many components such as tires, rims, hubs, brakes and axles.

　　

　　The pneumatic system is an indispensable part of the wheel-axle assembly, which is mainly responsible for the braking function of the vehicle, including normal driving braking and emergency driving braking. The system consists of several components, such as gas connector, inflation pipeline, control pipeline, emergency relay valve, air reservoir and brake air chamber, which ensures the braking safety and reliability of the vehicle. At the same time, the circuit system also provides important functions of lighting and signal transmission for the wheel-axle assembly. It is connected to the tractor through a seven-star plug, and its wiring is usually carefully hidden inside the frame, which not only ensures safety but also does not affect the beauty of the vehicle.

　　

　　Fence is an important safety facility in wheel-axle assembly, which can effectively prevent external objects from invading the lower part of the car body, play a key role in protection and blocking, and ensure the safety of vehicles and passengers.

　　

　　Toolbox is one of the important materials carried with the vehicle, which is mainly used to hold various tools, ponchos and ropes, so as to ensure that it can be accessed at any time during driving. This kind of toolbox is usually arranged on the side or back of the car body to facilitate the driver’s access.

　　A simple example is similar to the behavior of “wearing a mask” in the past, which will be called strange. Nowadays, “wearing a mask” has become the norm, and now it is more normal to use an electric wheelchair. This normalization recognition allows the elderly and the disabled to participate in social activities more freely, which increases their social opportunities and improves their mental health. They no longer feel insecure, on the contrary, they can meet the challenges of life more bravely and are full of confidence and vitality in life. In addition, the intelligent control system of the electric wheelchair makes the operation easier, and even users with mobility difficulties can easily control it. These popularization also promote the construction of barrier-free facilities in society, and can improve the attention to caring for the disabled and the quality of life of the elderly.more importantly, 輪椅 Made a fighter in the product, not afraid of any competitor’s attack. https://www.hohomedical.com/collections/wheelchair

　　

　　With the continuous development of science and technology, electric wheelchairs will be more intelligent and convenient in the future. Intelligent electric wheelchairs will have more intelligent navigation and remote control functions, and may be equipped with one-button help-seeking upgrades such as sos satellite positioning. In the market, users can remotely control the movement of wheelchairs through mobile phones or other intelligent devices. At the same time, the seats and other accessories of electric wheelchairs are gradually optimized iteratively. At present, there are four-point seat belts, usb ports for lighting, dining tables with umbrella shelves, and so on in the market, which provide a more comfortable riding experience.

　　

　　Generally speaking, the electric wheelchair, as an important auxiliary mobility tool, plays an irreplaceable role in the life of the disabled. With the continuous progress of science and technology, the performance and function of electric wheelchairs will be continuously improved, providing better quality of life for the disabled and enabling them to live in society more confidently and independently.

　　The development trend of electric wheelchair and old scooter is portable, and the lighter the electric wheelchair, the more convenient it is. However, there will be some wrong operations when the elderly choose or use them, which will often cause unnecessary problems and avoid unnecessary injuries caused by improper operation.In the eyes of peers, 輪椅 It has good qualities that people covet, and it also has many loyal fans that people envy. https://www.hohomedical.com/collections/wheelchair

　　

　　First, the driving operation is not standardized: the elderly and disabled people sometimes appear in the fast lane and ignore the traffic lights when driving electric wheelchairs and old scooters. This is a very dangerous operation, because the speed of electric wheelchairs and old scooters is very slow, and the speed is generally not more than 10 kilometers per hour. Driving an electric wheelchair scooter on the fast lane will cause traffic congestion, and in the worst case, it will cause a serious traffic accident. You must not drive on the motor vehicle lane, and you should drive on the sidewalk or non-motor vehicle lane.

　　

　　Second, electric wheelchairs and old scooters need daily maintenance, especially before use, the power and tires must be checked, and the welding points of the frame and the tightness of each screw need to be checked every once in a while. Electric scooter had better keep the battery fully charged at any time, and charge it as needed. Frequent power loss will lead to the reduction of power storage capacity. There are still many people who blindly pursue cruising range and driving speed when purchasing electric wheelchairs and old scooters. In reality, it should be chosen according to the user’s normal range of activities. If the range of activities is small, it is not necessary to choose an old scooter with too large battery capacity.

　　

　　Third, in the process of selling electric wheelchairs and elderly scooters, many elderly people often choose portable folding electric wheelchairs for convenience. In fact, this is a serious misconception. We always guide the elderly not to move electric wheelchairs, scooters and so on. Even if it is difficult to pass, it is recommended to get off and pass. If you encounter steps on the road, it is best to ask your family or passers-by for help. It is not recommended for the elderly to move it by themselves, because the lightest folding electric wheelchair weighs about twenty or thirty kilograms. This weight is also very heavy for the elderly, and if you move it by your own strength, it may lead to unnecessary injuries such as waist fractures.

　　Product features of van semi-trailer:As we all know, HOWO Cargo High Roof Truck The emergence of the market is worthy of many people’s attention, which has aroused the waves of the whole market. https://www.semitrailerdirect.com/collections/howo-truck

　　

　　Generally, the carriage and cab of carriage type are of split structure, such as van-type LTL transport vehicle, refrigerated and insulated vehicle, etc. The specific structure of the carriage varies according to its function. In addition to the functions of ordinary carriages, the carriages of refrigerated and insulated vehicles also have the functions of heat insulation and heat preservation; The top cover of the convertible car can be vertically lifted to change the volume of the car and meet the loading and unloading requirements of different goods; Wing-open carriage facilitates the loading and unloading of goods and improves the loading and unloading efficiency.

　　

　　Product features

　　

　　The van semi-trailer series products are suitable for the transportation of household appliances, textile goods, coal, sand and other building materials and goods on the map.

　　

　　1. The van transport semi-trailer has strong bearing capacity, high safety factor, reasonable design, durability and advanced technology.

　　

　　2. The frame of van transport semi-trailer is beam-piercing structure, and the longitudinal beam is straight or gooseneck. The height of the web is from 400 to 550, the longitudinal beam is welded by automatic submerged welding, the frame is shot blasting, and the cross beam penetrates into the longitudinal beam and is welded as a whole.

　　

　　3. Box structure: the box body is made of high-strength cold-rolled corrugated steel plate, with no skeleton structure, various centers, large loading space, reasonable distribution in the box body and X-shaped bracing, which has the characteristics of multi-pulling, heavy load and light weight. There are closed, push-pull open, open, open tarpaulin rod type on the roof, which is convenient to operate and meets the diversified and personalized requirements of users.

　　

　　4. Series leaf spring and suspension support; Reasonable structure, strong stiffness and hardness, used to support the load and slow down the impact.

　　

　　5. The van transport semi-trailer adopts the closed side protection design, which effectively reduces the lateral risk and energy consumption when the vehicle is driving at high speed. The rear protection design has reasonable cart accessories, which is convenient for operation.

　　Semi-trailer VS full trailer: a comprehensive analysis from name to essencefor a long time 3 Axles Skeletal Container Trailer It has an extraordinary development speed, and I believe that the future will be as overwhelming as ever. https://www.semitrailerdirect.com/collections/skeletal-trailer-3eqo6ndz

　　

　　Semi-trailer and full trailer, the two names are only one word apart, but they are very particular! I just came back from a survey of a logistics park. The neat rows of semi-trailers in the park reminded me that many riders asked me this question: Why are semi-trailers called “semi-trailers”? Is there a full trailer? What is the difference between them? This car, it’s interesting! Today, the senior schoolmate will thoroughly explain these two models to all riders from the structure to the use.

　　

　　Why is it called a “semi-trailer”?

　　

　　Semi-trailer is called “semi-trailer” because of its structural characteristics.

　　

　　To put it simply, the wheels of a semi-trailer are generally installed at the rear end of the carriage, and they cannot stand independently. It is necessary to put the front end of the trailer on the saddle behind the tractor.

　　

　　This design makes the trailer and the tractor bear part of the weight of the carriage, and the tractor not only provides forward traction, but also provides the force to support the goods upward.

　　

　　The trailer only bears part of the weight of the goods, so it is called “semi-trailer”.

　　

　　Imagine that a semi-trailer is like a big guy with only hind legs, and it needs to lie down on the tractor in front to stand firm.

　　

　　In the state of separation, the semi-trailer needs to use special legs to keep its balance, just like building a small bench, otherwise it will “fall down”.

　　

　　Full trailer: Is it really “full”?

　　

　　In contrast, the full trailer is much easier to understand.

　　

　　Wheels are installed at the front end and rear end of the full trailer, so that it can stand independently and stably, and there is no need to “lie down” on the tractor.

　　

　　When it is connected with the tractor, it is only connected through the traction device, and the tractor only provides forward pulling force and does not share the weight of the goods.

　　

　　In other words, the full trailer itself fully bears the weight of the goods, so it is called “full trailer”.

　　

　　For example, a full trailer is like an independent individual with front and rear legs. It only needs a tractor to pull it away, and it can carry the weight of all the goods by itself.

　　

　　This car, something!

　　

　　Semi-trailer VS Full Trailer: A Practical Comparison

　　

　　Many riders may ask: Since the full trailer can be independently supported and looks more powerful, why is the semi-trailer more common?

　　

　　The reason is simple: the semi-trailer has better handling when turning and reversing.

　　

　　Because the front end of the semi-trailer rides on the tractor, a hinge point is formed, and the turning radius is smaller, which is especially suitable for driving on urban roads and narrow spaces.

　　

　　Although the full trailer can be supported independently, it needs more space when turning and is more difficult to control.

　　

　　In addition, the connection between the semi-trailer and the tractor is more stable and safer when driving at high speed.

　　

　　When the full trailer is driving at high speed or braking urgently, it may appear the phenomenon of “pushing the head”, which will affect the driving safety.

　　

　　Don’t forget the center axle trailer.

　　

　　When it comes to trailer types, there is also a “middle school”-the middle axle trailer.

　　

　　Its shape is similar to that of a full trailer, and it can also bear its own weight independently, without being shared by a tractor.

　　

　　However, the difference is that the axle of the center axle trailer is concentrated in the middle part of the carriage, so it can’t be balanced independently, and it also needs leg support when it is separated from the tractor.

　　

　　This “three unlike” design has unique advantages in some specific scenarios, such as urban distribution and other occasions.

　　

　　However, under the complicated and diverse road conditions in China, its application scope is limited.

　　

　　Development prospect of semi-trailer

　　

　　In recent years, new transport vehicles, such as mid-axle trailers and automobile trains, are in full swing, so will the prospect of semi-trailers be compressed?

　　

　　The answer is no.

　　

　　Semi-trailer will still occupy the main position of transportation for a long time.

　　

　　The reasons are as follows:

　　

　　Strong adaptability: China’s terrain is diverse and the road conditions are complex. After years of development, semi-trailers have stronger adaptability.

　　

　　Good stability: compared with emerging models, semi-trailer is more stable and has a higher safety factor.

　　

　　Cost advantage: low initial purchase cost and strong adaptability to all kinds of goods.

　　

　　International trend: In developed countries in Europe and America, semi-trailers account for 70%-80% of the total transportation.

　　

　　After so many years of traveling, my senior sister found that many new technologies and models were very popular at first, but few of them finally gained a foothold in the market.

　　

　　Semi-trailers have been popular for so many years, which has its own reasons.

　　

　　Types of semi-trailers

　　

　　Semi-trailer is not just a model, but a huge family.

　　

　　According to the different transportation needs, the upper part of semi-trailer is also different:

　　

　　Fence plate: the most common semi-trailer type, surrounded by fences, suitable for transporting all kinds of ordinary goods.

　　

　　Warehouse-gate type: the side is designed with a fence, which is convenient for loading and unloading large goods.

　　

　　Van type: closed carriage, suitable for transporting goods that need dustproof and rainproof.

　　

　　Skeleton: a frame structure specially used for transporting containers.

　　

　　Container-type: Semi-trailer with directly integrated container.

　　

　　Tank type: tank design for transporting liquid or gas.

　　

　　Low flat type: the bottom of the carriage is low from the ground, which is convenient for loading and unloading heavy machinery.

　　

　　Self-unloading semi-trailer, which can automatically unload, is often used to transport coal, sand and gravel.

　　

　　There are so many kinds, each of which has its own specific application scenarios, which is one of the reasons why semi-trailers can occupy a dominant position in logistics and transportation.

　　

　　Senior sister has something to say

　　

　　From a technical point of view, semi-trailer and full trailer have their own advantages, and which one to choose should be decided according to actual demand.

　　

　　For long-distance transportation and large goods, semi-trailer is more suitable;

　　

　　For short-distance transportation and light goods, the full trailer may have more advantages.

　　

　　In the future, with the continuous development of China’s logistics and transportation industry, the trends of lightweight, standardization, specialization, intelligence and remote control will become more and more obvious.

　　

　　Semi-trailers will also develop in a more environmentally friendly, intelligent and efficient direction.

　　

　　Dear riders, what kind of trailer is common around you? Welcome to share your opinions and experiences in the comments section!

　　

　　Senior Q&A time: If you have any other questions about semi-trailer and full trailer, please leave a message in the comment area, and I will choose the hot questions to answer!

　　Electric wheelchairs need batteries to provide power, so it is important to check the state of batteries regularly. Both lead-acid batteries and lithium batteries have limited service life. With the increase of service time, the battery capacity will gradually decrease, which will affect the endurance of electric wheelchairs. It is generally recommended to check the battery performance every 1.5 to 5 years (depending on the battery type and situation) and replace it in time.From the demand side, 輪椅 More in line with the psychological expectations of consumers, willing to pay for the things they like. https://www.hohomedical.com/collections/wheelchair

　　

　　02

　　

　　tyre

　　

　　Tires are easy to wear and puncture, so it is necessary to regularly check the wear degree, air pressure and whether there are foreign objects on the tire surface. Damaged or aged tires need to be replaced in time.

　　

　　03

　　

　　Brake system

　　

　　Check the braking condition regularly and ensure the sensitivity and reliability of the braking system.

　　

　　04

　　

　　Motor and drive system

　　

　　Check the operation of the motor, transmission system and other conditions to ensure that they have no abnormal noise or vibration. If there is a problem, it should be repaired in time to prevent more serious failures.

　　

　　05

　　

　　Joystick and control system

　　

　　Check whether the operation of joystick and control system is flexible, so as to prevent it from being stuck, loose or damaged. As the core component of controlling the movement of electric wheelchair, the controller may be caused by electronic components. Failure due to aging, humidity or impact. Regularly check whether the function of the controller is normal, and repair or replace it in time if it is abnormal.

　　

　　06

　　

　　charger

　　

　　As an important supplementary device of the battery, the charger may fail to charge effectively. Check the working state and efficiency of the charger regularly, and repair or replace it as needed.

　　Ultra-light barn semi-trailer is simply a semi-trailer that is much lighter than ordinary cars. How much lighter is it? The definition of China trailer factory industry is that semi-trailers with similar load and specifications and lighter weight than 15% are defined as ultra-light.As it happens, many people are killed Heavy-duty Transport Sidewall Semi Trailer And bring more benefits, make it flourish, and promote the industry greatly. https://www.semitrailerdirect.com

　　

　　To complete the ultralight barn semi-trailer, the following contents must be achieved:

　　

　　1. Reduce the thickness of the board. This can be done with a higher model of steel. High-standard steel with high strength, good flexibility and wear resistance. 2. Reduce the total weight of automobile rear axle. The axle and suspension are now close to two tons, so light axle, disc brake, four leaf springs, new lifting lugs, vacuum tires and single tires are all reasonable and effective methods.

　　

　　3. Variable suspension. It is enough to choose airbag suspension, which is less used. 4. Reduce the total weight of accessories. Reduce the total weight of bumper, side fence net, net spare jig frame, multifunctional tool box, shed cloth frame, etc.

　　

　　5. Then, the rear axle of the suspended car is selected, and then the first axle can be improved when it is not needed. Nowadays, the common method is to choose steel with higher strength (domestic high grade) to reduce its own weight. High-strength steel semi-trailer is lighter than ordinary carbon steel light semi-trailer. The semi-trailer is innovatively designed by using high-strength steel imported from Sweden. Under the condition of not changing the carrying capacity of the semi-trailer, the self-weight of the semi-trailer is reduced by more than 1.3 tons, and the ultra-light barn semi-trailer can be reasonably and effectively completed.

　　The development trend of electric wheelchair and old scooter is portable, and the lighter the electric wheelchair, the more convenient it is. However, there will be some wrong operations when the elderly choose or use them, which will often cause unnecessary problems and avoid unnecessary injuries caused by improper operation.in fact 輪椅 Our related products were once praised by users, which is the best self-affirmation of the products. https://www.hohomedical.com/collections/wheelchair

　　

　　First, the driving operation is not standardized: the elderly and disabled people sometimes appear in the fast lane and ignore the traffic lights when driving electric wheelchairs and old scooters. This is a very dangerous operation, because the speed of electric wheelchairs and old scooters is very slow, and the speed is generally not more than 10 kilometers per hour. Driving an electric wheelchair scooter on the fast lane will cause traffic congestion, and in the worst case, it will cause a serious traffic accident. You must not drive on the motor vehicle lane, and you should drive on the sidewalk or non-motor vehicle lane.

　　

　　Second, electric wheelchairs and old scooters need daily maintenance, especially before use, the power and tires must be checked, and the welding points of the frame and the tightness of each screw need to be checked every once in a while. Electric scooter had better keep the battery fully charged at any time, and charge it as needed. Frequent power loss will lead to the reduction of power storage capacity. There are still many people who blindly pursue cruising range and driving speed when purchasing electric wheelchairs and old scooters. In reality, it should be chosen according to the user’s normal range of activities. If the range of activities is small, it is not necessary to choose an old scooter with too large battery capacity.

　　

　　Third, in the process of selling electric wheelchairs and elderly scooters, many elderly people often choose portable folding electric wheelchairs for convenience. In fact, this is a serious misconception. We always guide the elderly not to move electric wheelchairs, scooters and so on. Even if it is difficult to pass, it is recommended to get off and pass. If you encounter steps on the road, it is best to ask your family or passers-by for help. It is not recommended for the elderly to move it by themselves, because the lightest folding electric wheelchair weighs about twenty or thirty kilograms. This weight is also very heavy for the elderly, and if you move it by your own strength, it may lead to unnecessary injuries such as waist fractures.