The independent suspension mechanism of automobile is more complicated, and there are many connecting and guiding mechanism rods. In order to insulate vibration and sound, more and more axle manufacturers use rubber joints. It plays the role of absorbing impact, reducing vibration, reducing frictional noise and elastic connection, thereby improving the comfort and handling stability of the car. During use, it is necessary to prevent the rubber nodes from being corroded by dirt or oil and keep them clean.
In the maintenance process, pay attention to checking whether these rubber parts have plastic deformation, cracking and aging. It should be replaced in time during use. Coil springs are widely used in independent suspension axles, especially in front wheel independent suspensions. The elastic elements in the rear suspension of cars and mini cars also use coil springs, which have the advantages of no need for lubrication, no fear of mud, small longitudinal space occupied by layout, and low quality. However, the coil spring itself does not have the effect of damping, and can only bear vertical loads, and its lateral rigidity is poor.
Therefore, a shock absorber must be installed in the coil spring suspension, and a guide mechanism must be installed to transmit various forces and torques other than the vertical force. In the maintenance work of commercial vehicle axles, attention should be paid to check whether the coil springs have plastic deformation, fractures, or scars, and they should be replaced regularly if necessary. Special tools must be used during disassembly and installation to avoid breakage and deformation. If possible, check whether the free length and spring stiffness meet the specified values, and the new coil spring must meet the specifications.
