Auto rear beam assembly function
The main role of the rear bumper beam assembly of the car includes the following aspects :
Disperse and absorb impact force : the rear bumper beam assembly is usually made of high-strength steel or other wear-resistant materials, its main role is to disperse and absorb the impact force when the vehicle is impacted, so as to protect the front and rear of the vehicle from external impact force .
protect body structure : in the collision process, the rear bumper beam absorbs part of the collision energy through deformation, reduces the direct impact on the body structure, so as to protect the overall structure of the vehicle from serious damage .
Passenger safety : The design and material choice of the rear bumper beam assembly affects the rigidity and weight of the vehicle, which in turn affects fuel efficiency and ride performance. More importantly, it can provide a certain safety guarantee for passengers in the car in a collision, reducing the risk of passenger injury .
Affects aerodynamic performance : In addition, the design and shape of the rear bumper beam also affects the vehicle's aerodynamic performance, which affects the vehicle's fuel efficiency and other performance indicators .
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, determines the shape and basic structure of the bumper .
mounting kit : includes mounting head and mounting post for securing rear bumper body. The mounting head interacts with the rubber buffer block on the taildoor to protect the body .
Elastic cassette : used to secure and connect rear bumper body and other components .
anti-collision steel beam : can transfer and disperse the impact energy, protect the body .
plastic foam : absorb and disperse the impact energy, protect the body .
bracket : used to support the bumper and connect the rear bumper to the rear outer panel .
reflectors : improve visibility for driving at night .
mounting hole : used for connecting radar and antenna components .
stiffener : Enhances the side stiffness and perceived quality of the bumper .
Other accessories : such as rear bumper cover, rear bumper light, rear bumper guard plate, rear bumper glitter, rear barbar iron, rear bumper lower side circumference, rear bumper frame, rear bumper wrap Angle, rear bumper clip, rear bumper reflector, etc .
These parts work together to ensure that the car is able to absorb and disperse the impact energy in the event of a collision, protecting the body structure from damage.
Automotive rear beam assembly failure mainly includes the following types:
Bearing wear : Bearing wear in the rear axle assembly will cause abnormal noise when the vehicle is running, and in serious cases will affect the stability and safety of the vehicle.
gear damage : Gear damage will cause the rear axle assembly to not work properly, affecting the driving force and speed conversion of the vehicle.
oil seal leakage : oil seal leakage will cause oil leakage of the rear axle assembly, affecting its normal lubrication and sealing performance.
Fault cause
The main causes of these failures include:
bearing wear : due to long-term use and lack of lubrication, the bearing will gradually wear.
gear damage : the gear is subjected to greater force in high-speed operation, which is prone to fatigue damage.
oil seal aging : the oil seal will be aging for a long time, resulting in the deterioration of the sealing performance.
Fault diagnosis method
Methods for diagnosing these failures include:
Check abnormal sound : determine whether the bearing is worn through auscultation of the abnormal sound of the vehicle in the process of driving.
Check for oil leakage : Check the rear axle assembly for oil leakage, especially the joint of the oil seal and the housing.
Check gear condition : Check gear wear and damage by professional equipment.
Maintenance method
In response to these failures, the following maintenance methods can be taken:
Replace worn bearing : Replace with a suitable bearing, ensure proper installation and adequate lubrication.
repair or replacement of damaged gear : Choose to repair or replace the gear according to the degree of damage.
Check and repair oil seal leakage : Replace the damaged oil seal to ensure that the seal performance returns to normal.
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