Auxiliary frame bush assembly

Abstract

The invention discloses an auxiliary frame bush assembly which comprises an inner liner pipe, an outer liner pipe, a rubber main spring, an upper press block and a lower press block. The inner liner pipe is arranged in the rubber main spring. The outer wall of the inner liner pipe abuts against the inner wall of the rubber main spring. The outer liner pipe is fixedly arranged on the periphery of the rubber main spring. The inner wall of the outer liner pipe abuts against the outer wall of the rubber main spring. The upper press block and the lower press block are detachably fixed to the upperend and the lower end of the rubber main spring. The auxiliary frame bush assembly is simple in structure; the vehicle NVH and vehicle controllability can be improved; rigidity can be adjusted flexibly; the whole vehicle weight is reduced; and therefore the vehicle safety is improved.

Description

technical field [0001] The invention relates to the technical field of sub-frames, in particular to a sub-frame bushing assembly. Background technique [0002] Completing the connection between the subframe and the body is one of the main functions of the rubber bushing, and the rubber bushing of the subframe has a great influence on the vibration characteristics generated when the car is running. The fatigue damage caused by frequent vibration is the main potential of the rubber bushing. One of the failure modes. [0003] Due to the complex and changeable driving conditions of the vehicle and the limitation of the working position of the rubber bushing, the inspection and maintenance of the rubber bushing are extremely inconvenient, and the degree of damage cannot be found in time. And in various harsh working environments, the rubber bushing must withstand vibration, corrosion and friction to protect other components, which greatly reduces its own life. The rubber bushin...

AI Technical Summary

Problems solved by technology

However, the working environment of the bushing is harsh, and the failure consequences caused by the wear and slippage of the bushing under the frequent fatigue and durability will seriously affect the driving safety of the vehicle.

like Figure 1-2 As shown, the existing bushing has the following problems: the subframe bushing has the following design problems: stress concentration, easy to wear, fatigue damage; in order to resist the influence of the atmospheric environment on the rubber, the particle diameter of the filler used in the rubber material Strict control is required; in production, the surface precision processing of metal molds should be improved to avoid defects on the rubber surface and its vicinity; poor control of vulcanization time and vulcanization temperature will affect the fatigue life of the bushing

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