Semi-trailer leaf spring knowledge

The semi-trailer is mounted on the trailer plate (also called the ear plate) of the tractor, and its suspension is used for

An important component that supports the weight of the entire vehicle and runs smoothly. In order to ensure the safety and reliability of the suspension of the semi-trailer, it is necessary to carry out maintenance and maintenance in strict accordance with the operating specifications. Therefore, this article will introduce the semi-trailer suspension work instructions in detail to improve the drivers' understanding of the maintenance of the semi-trailer suspension and ensure the safety of the semi-trailer suspension.

1. Check the suspension system

The inspection of the semi-trailer suspension system is a key step to ensure the normal operation of the semi-trailer suspension.

The inspection is divided into two parts, which are described in detail below.

1. Check the front axle suspension system

The front axle suspension system is one of the bearing parts of the semi-trailer vehicle weight, which bears most of the vehicle quality, so it needs to be inspected to ensure its safe operation.

(1) Check the suspension spring: Check the state and tension of the suspension spring. If the spring is found to be deformed or the tension is insufficient, it must be replaced in time.

(2) Check the suspension bottom plate: Check whether the connection between the suspension bottom plate and the frame is tight. If it is loose, it may cause safety problems and needs to be dealt with immediately.

(3) Check the shock absorber: Check the condition of the shock absorber. If oil leakage, breakage and other problems are found, it must be replaced.

2. Check the rear axle suspension system

The inspection of the rear axle suspension system is also an important part of the inspection of the semi-trailer suspension system. The following will introduce how to inspect it in detail.

(1) Check the synchronizer: check whether the gap between the synchronizer bearing, bearing sleeve and blade is appropriate, and adjust or replace the parts in time if there is a problem.

(2) Check the pillow: Check whether the pillow is in good condition. If there are cracks, deformation and other problems, it needs to be replaced in time.

(3) Check the rod spring: check the state and tension of the rod spring, and replace it in time if any problem is found.

2. Maintain the suspension system

The maintenance of the semi-trailer suspension system is very important to prolong the service life of the semi-trailer, which will be introduced in two parts below.

1. Regular lubrication

In order to ensure the normal operation of the suspension system of the semi-trailer, it is necessary to perform lubrication according to the specified period, and the appropriate lubricating oil and tools must be used.

(1) Check the lubrication points: Regularly check and clear the lubrication points of the suspension system to ensure the smooth flow of lubricating oil.

(2) Select the appropriate lubricating oil: Selecting the appropriate lubricating oil is an important step in the maintenance of the semi-trailer suspension, and must be selected according to the type of lubricating oil recommended by the vehicle manufacturer.

(3) Regularly replace the lubricating oil: regularly replace the lubricating oil according to the recommended cycle of the vehicle manufacturer to ensure the long-term normal operation of the semi-trailer suspension.

2. Regular cleaning

The suspension system of a semi-trailer often faces different external environments, so regular cleaning is an important step in maintaining the suspension system of a semi-trailer.

(1) Removing oil and dust: Regularly clean all parts of the semi-trailer suspension system to remove oil and dust and other debris, so as to ensure normal operation.

(2) Prevent fork head corrosion: Clean the fork head very carefully, avoid using too strong cleaning agent or brush to cause fork head corrosion.

(3) External oiling: After cleaning, the outer surface of the suspension parts should be coated with a special lubricant to avoid impurities and corrosion.

3. Matters needing attention

In addition to the suspension system inspection and maintenance mentioned above, the following items need to be paid attention to:

(1) Pay attention to the safety of the suspension system: the safety of the suspension system of a semi-trailer is directly related to the safety of the vehicle. When using a semi-trailer, the driver must pay attention to the safety of the suspension system.

(2) Maintenance records: In order to facilitate the next maintenance, the maintenance records must be saved after each maintenance.

(3) Troubleshooting: If abnormalities are found in the suspension system, troubleshooting must be carried out immediately to avoid safety accidents.

To sum up, the semi-trailer suspension work instruction introduces in detail the inspection, maintenance and precautions of the semi-trailer suspension system. The driver must perform maintenance and maintenance in strict accordance with the operating specifications to ensure the safety and stability of the suspension of the semi-trailer. Only in this way can everyone drive the semi-trailer with confidence and ensure the safety of personal and property.