What is the rear beam assembly
Automobile rear bumper beam assembly is an important part of automobile body structure, mainly including rear bumper body, mounting parts, elastic cassette and other parts . The rear bumper body determines the shape and basic structure of the bumper. Mounting parts such as the mounting head and mounting column are used to fix the cassette on the rear bumper body, and the elastic cassette plays the role of buffering and fixing .
Concrete component
rear bumper body : this is the main part of the rear bumper assembly, determines the shape and basic structure of the bumper .
mounting part : comprises a mounting head and a mounting post for fixing the cassette seat on the rear bumper body .
elastic cassette : play a cushioning and fixing role, usually used with the installation column .
anti-collision steel beam : can transmit the impact force to the chassis and disperse .
plastic foam : absorb and disperse the impact energy, protect the body .
bracket : used to support the bumper .
Reflectors : Improve visibility for driving at night.
mounting hole : used for connecting radar and antenna components .
stiffened plate : improve side stiffness and perceived quality .
Other accessories : such as anti-collision steel beam, plastic foam, bracket, reflective plate, mounting hole .
Function and effect
The main function of the rear bumper beam assembly is to absorb and mitigate the impact force from the outside and provide protection for the body. It ensures that the energy can be effectively dispersed and absorbed when it is impacted by the combination of mounting parts and elastic seats, protecting the body from damage .
In addition, the rear bumper beam assembly further enhances the vehicle's protective capabilities through crash-resistant steel beams and plastic foam components, ensuring maximum passenger protection in the event of a collision .
The main functions of the rear bumper beam assembly include improving the rigidity of the body and protecting the vehicle structure.
Improve the rigidity of the body : the rear bumper beam assembly forms a whole with the rear beam in the top cover, which improves the overall stiffness of the rear segment of the car, thus improving the road noise problem of the vehicle, and can effectively transmit torque in side collision to avoid large deformation .
In addition, the bumper beam, usually made of high-strength steel or other wear-resistant materials, is able to disperse and absorb the impact force in the event of a crash, protecting the front and rear of the vehicle from damage caused by external impact .
Protect vehicle structure : in low-speed collision, the rear bumper beam can directly withstand the impact force, avoid damage to important components such as radiator and condenser, and reduce maintenance costs .
In high-speed collision, the rear anti-collision beam absorbs energy through deformation, reduces the damage to the main structure of the body, and protects the safety of passengers in the car .
For example, the resin rear anti-collision beam of the M7 can evenly transfer collision force during collision, reduce local deformation, and protect the rear structure of the vehicle and the occupants .
automotive rear beam assembly failure mainly includes the following types:
Bearing wear : Bearing wear in the rear axle assembly will cause abnormal noise and vibration when the vehicle is running, affecting the comfort and safety of driving .
gear damage : gear damage will cause the rear axle assembly can not work normally, affect the driving force and speed change of the vehicle, and may cause the vehicle can not run in serious cases.
oil seal leakage : oil seal leakage will cause oil leakage of the rear axle assembly, affect the lubrication effect, and may cause component damage in serious cases.
Fault cause
The main causes of these failures include:
wear caused by long-term use : bearings and gears will wear due to friction in long-term use.
insufficient lubrication : Lack of proper lubrication can lead to premature wear of bearings and gears.
Improper installation : Improper operation or incorrect installation during installation may result in bearing and gear damage.
seal failure : Aging or damaged oil seals can lead to oil leakage.
Maintenance method
In response to these failures, the following maintenance methods can be taken:
replace the worn bearing : replace the worn bearing with a new bearing and restore its normal work.
repair or replacement of damaged gear : Repair or replace the damaged gear with a new one.
Check and repair oil seal leakage : check whether the oil seal is damaged, and replace it with a new one if necessary to ensure the sealing effect.
preventive measure
To prevent these failures, you can take the following measures:
Regular inspection and maintenance : Regularly inspect the various components of the rear axle assembly to ensure that they are in good condition.
proper lubrication : Ensure that the rear axle assembly is properly lubricated to reduce wear.
Correct installation : Ensure correct operation during installation to avoid damage caused by improper installation.
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