What is the rear beam assembly
The rear bumper assembly is an important part of the car, mainly composed of the following parts:
Rear bumper body : This is the main part of the rear bumper assembly, usually made of plastic or metal material, used to absorb and disperse the impact force from the outside, protecting the body .
mounting kit : includes a mounting head and mounting post for securing the rear bumper body on the body of the vehicle. The mounting head collides with the rubber buffer block on the taildoor to cushion the body .
elastic holder : Ensure that the holder is firmly fixed on the rear bumper body by closely combining the mounting column with the through hole of the rear bumper body.
anti-collision steel beam : located inside the rear bumper, can transfer the impact force to the chassis and disperse, enhance the protection effect of the body .
plastic foam : absorb and disperse the impact energy, further protect the body .
bracket : used to support the bumper and enhance its structural stability .
reflective film : improve the visibility of night driving, ensure driving safety .
mounting hole : used to connect radar, antenna and other components, enhance vehicle functionality .
stiffener : Some rear bumpers also have stiffener plates to improve side stiffness and perceived quality .
These components work together to ensure that the car can effectively absorb and disperse the impact force in the event of a collision, protecting the body and passengers.
The main function of the rear bumper beam assembly includes protecting the vehicle structure and reducing maintenance costs.
Protective vehicle structure
absorption and dispersion of collision energy : the rear bumper beam assembly is usually made of high-strength steel, which can absorb and disperse the collision energy through its own structural deformation when the vehicle crashes, so as to reduce the damage to the main structure of the body and protect the safety of passengers in the car .
prevent body deformation : in a low-speed collision, the rear bumper beam can directly withstand the impact force to avoid damage to the important rear parts of the vehicle, such as the radiator and condenser. In a high-speed crash, the rear bumper beam is able to disperse some of the energy along the body structure, mitigating the impact on the occupants .
improve body stiffness : in some designs, the rear bumper beam forms a whole with the middle rear beam of the top cover, which improves the overall stiffness of the rear segment of the car, improves the noise of the vehicle, and avoids large deformation of the body during side collision.
Reduce maintenance costs
Reduced maintenance costs : In low-speed collisions, the deformation of the rear bumper beam can absorb part of the impact energy, reducing the impact on the body structure. In this way, the vehicle may only need to replace or simply repair the rear bumper beam, without the need for large-scale repairs to the body, thus reducing the maintenance cost .
car rear bumper beam assembly failure mainly includes the following common problems:
Bearing wear : bearing wear will cause the rear axle assembly to run poorly, affecting the driving performance and stability of the vehicle.
gear damage : gear damage will lead to poor transmission of driving force, affecting the normal running of the vehicle.
oil seal leakage : oil seal leakage will cause lubricating oil leakage, affect the normal work of the rear axle assembly, and may cause component damage in serious cases.
Fault diagnosis method
Check the bearing : check the running sound of the bearing through the stethoscope or professional tools to determine whether there is abnormal noise.
Check the gear : Observe the wear of the gear, if necessary, professional inspection.
Check the oil seal : check whether the oil seal is in good condition and whether there is oil leakage.
Maintenance method
Replace worn bearing : Remove and replace worn bearing with appropriate tools.
repair or replacement of damaged gear : Choose to repair or replace damaged gear according to the degree of damage.
Check and repair oil seal leak : Replace damaged oil seal to ensure tightness.
preventive measure
Regular inspection : Regular inspection of all components of the rear axle assembly, timely detection and treatment of potential problems.
correct use of lubricating oil : Use the right lubricating oil to ensure the normal operation of bearings and gears.
avoid overload : Avoid vehicle overload and reduce component wear.
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