Cautions for Use and Installation of Semitrailer for Vehicle Transportation

In the past, most of the bearings used in vehicle transport semi-trailers were pairs of single-row tapered rollers or ball bearings. With the development of technology, vehicle transportation semi-trailers have widely used hub units. The range of use and the amount of use of wheel hub bearing units has been growing and has now reached the third generation: The first generation is composed of double row angular contact bearings.

The second generation has a flange for fixing the bearing on the outer raceway, which can be easily fixed to the axle with a nut, so that the maintenance of the automobile becomes easy. The third-generation hub bearing unit is a combination of a bearing unit and an anti-lock brake system. The hub unit is designed with an inner flange and an outer flange, the inner flange is bolted to the drive shaft, and the outer flange mounts the entire bearing together.

Worn or damaged hub bearings or hub units can cause inappropriate and costly failures of your vehicle while on the road and can even cause damage to your safety. In the use and installation of hub bearings, please pay attention to the following matters:

1. In order to ensure maximum safety and reliability, it is recommended that you always check the wheel bearing regardless of the age of the car - pay attention to whether the bearing has an early warning signal of wear and tear: including any friction noise during rotation or suspension of the combination wheel during turning Unusual deceleration.

For rear-wheel-drive vehicles, it is recommended that the front hub bearing be lubricated when the vehicle is driven to 38,000 kilometers. When replacing the brake system, check the bearing and replace the oil seal. Vehicle Transportation Semitrailer Hub Usage and Installation Considerations

2. If you hear noise from the hub bearings, first of all, it is important to find where the noise occurs. There are many moving parts that may generate noise. It may also be that some rotating parts come into contact with non-rotating parts. If it is confirmed that the noise is in the bearing, the bearing may be damaged and needs to be replaced.

3. Because the working conditions of the front hub causing the failure of both sides of the bearing are similar, even if only one bearing is broken, it is recommended to replace it in pairs.

4. Hub bearings are sensitive and in any case need to use the right method and the right tool. During the storage and installation process, the bearing components cannot be damaged. Some bearings require a large pressure press, so special tools are needed. Must refer to the automobile manufacturing instructions. Vehicle transport semi-trailer hub

5, the installation of bearings should be in a clean and tidy environment, small particles into the bearing will shorten the bearing life. It is very important to maintain a clean environment when replacing bearings. It is not permissible to tap the bearing with a boring head and note that the bearing should not fall to the ground (or something similarly handled improperly). The condition of the shaft and bearing housing should also be checked prior to installation. Even minor wear can lead to poor fit and cause early bearing failure.

6. For hub bearing units, do not attempt to disassemble the hub bearing or adjust the seal of the hub unit, otherwise the seal may be damaged resulting in the entry of water or dust. Even the raceways of the seal ring and the inner ring are damaged, causing a permanent failure of the bearing.

7. There is a magnetic thrust ring in the seal equipped with the abs device bearing. This kind of thrust ring can not be impacted, impacted or collided with other magnetic fields. Remove them from the box before installation and keep them away from magnetic fields such as motors or power tools. When installing these bearings, change the bearing's operation by observing the abs alarm pin on the instrument panel through a road test.

8, hub bearings equipped with abs magnetic thrust ring, in order to determine the thrust ring installed on which side, you can use a light and small things near the edge of the bearing, the magnetic force generated by the bearing will attract it. When mounting, point the side with the magnetic thrust ring to the inside, facing the sensitive element of the abs. Note: Improper installation may result in malfunction of the brake system.

9, many bearings are sealed, this type of bearing does not require grease during the entire life. Other non-hermetic bearings such as double row tapered roller bearings must be greased during installation. Because of the different sizes of the inner cavity of the bearing, it is difficult to determine how much oil is added. The most important thing is to ensure that there is grease in the bearing. If the grease is too much, excess grease can seep out when the bearing rotates. General experience: At the time of installation, the total amount of grease accounts for 50% of the bearing clearance.

10. When the lock nut is installed, the torque varies greatly depending on the type of bearing and the bearing seat. Pay attention to the relevant instructions

According to the structure, there are three types of vehicle transport vehicles, namely double-bridge twins, double-bridge single-tires, and single-bridge twins; they are divided into skeleton type, semi-closed type, and closed type according to their appearance. The chariot is also known as the vehicle transporter, big strange, two strange and so on. According to the structure of the rear axle of the carriage, we can divide the carriage into two single-shaft and two-axle double-tires. Skeleton-type carriages, that is, the side panels are composed of columns, with no side-masks, no front, rear, and top panels. This type of car has a light weight, low cost, and low fuel consumption, but it is inconvenient when transporting goods, and the car is easily damaged. The semi-trailer of a semi-trailer structure is adopted for the cargo transportation part of the semi-trailer. Mainly to carry cars, but also loaded vans, commercial vehicles, jeep and other passenger cars. 1, the body is a rod, cabinet structure, light structure, light weight, mostly for the upper and lower loading platform, the platform using hydraulic cylinders will open, wire rope pulley structure, smooth lifting, high degree of positioning and so on. 2. Lightweight structure: The entire vehicle adopts a truss structure and the whole frame is carried. Without the semi-trailer's stringer structure, it has light weight and is about 30% lighter than the weight of similar vehicles. 3, safe and convenient operation: all loading and unloading platform lifting control operation is reliable, can be clearly observed and accurate operation. Vehicle transport semi-trailer wheel hub use and installation considerations Quzhou City 4, the suspension system: the use of a unique leaf spring under suspension system, variable cross-section leaf spring, good ride smooth. The trolleys can be made of different lengths according to customer requirements. The frame is a welded I-beam, and the entire vehicle body is fully automated with SAW and CO2 gas shielded welding. After the welding is completed, shot peening is performed to eliminate welding stress and improve the adhesion of the paint surface, so that the quality is stable and the appearance is beautiful. The upper chassis can be divided into two to three blocks, with chain hoists and cylinders to adjust the height. The closed front piece is made of stamped small corrugated board skin, and the side is made of small corrugated board or stamped corrugated board skin, and the top is equipped with a tent pole and a tarpaulin. The vehicle has a tool box, a spare tire frame, and a drip brake system to improve the safety of vehicle transportation. Cabriolet classification: Skeleton type, that is, the side panels are composed of upright columns, without side masks, without front sheets, back doors, and top sheets. This type of car has a light weight, low cost, and low fuel consumption, but it is inconvenient when transporting goods and the car is easily damaged.

The closed carriages, that is, the side panels and the front panels are all closed with a mask, with a rear door, and the top panel is a tented type. The car is a self-contained car with high cost and high fuel consumption, but it can protect the car and can transport other goods.

Semi-enclosed carriages, that is, without the top sheet, are characterized by in-between.

The biaxial single-tire carriage, ie, the rear axle has a biaxial structure, each axle has 2 tires and a total of 4 tires. The axle of this structure is designed as a concave bridge, so that the porous plate above the axle is very low from the ground, increasing the loading space.

The twin-axle double-ticket type carriage is a two-axle structure with four rear axles and a total of eight tires. The axle of this structure is designed as an ordinary axle and adopts a reversed-mounted suspension device. As a result, the porous plate above the axle is very high from the ground, generally 1250mm, and the loading space has an effect, but the carrying capacity increases. Shandong Hongsheng Vehicle Special Purpose Manufacturing Co., Ltd. provides professional, comprehensive special car prices, semi-trailer pictures. Vehicle Transportation Semitrailer Hub Usage and Installation Considerations